Segmental Features Between Arabic And English

Segmental Features Between Arabic And English This assignment is a complement to the first assignment titled as comparative and contrastive description of segmental features between the Arabic and English languages. In this assignment, differently, the light will be shed on comparative and contrastive description of suprasegmental features between the above-mentioned languages. Ellery, et al. (1995) indicated that features of spoken languages which are not identified as discrete segments are variously referred as prosodic features, non- segmental features or suprasegmental features (p.327). Ellery, et al. (1995) also stated that prosody refers to prosodic features of speech, namely, tone, stress, intonation and others. Thus, three prosodic features will be discussed to show the similarities and differences between English and Arabic. Besides, the focus will be shifted to identifying the problems the Arab learners often face in learning English in terms of prosody. 1-Arabic 1.1 Syllable Structure Reima (2007) stated that Arabic language has three syllable types. These are summarized as follows: 1- Super heavy syllables CVVC CVCC. The super heavy syllable consists of one consonant immediately followed by one or two vowels and end in one or two consonants as in: 2- Heavy syllables CVC CVV. The heavy syllable consists of one consonant immediately followed by one or two vowels as in: 3- Light syllable: CV. The light syllable consists of a consonant immediately followed by one short vowel as in: Reima (2007) asserted that formation of syllables is regular in the Arabic language. In addition, it is not typical to find any syllable in the Arabic language starts with V or CC. 1.2 Stress According to Reima (2007) Watson (2007) the Arabic language has three word stress levels. These are the primary, secondary and weak levels. Swan Smith (2001), Reima (2007) indicated that stress in the Arabic language is predictable and regular. In other words, one can predict or determine the stress of the Arabic words. Swan Smith (2001) stated that Arab learners face difficulty in predicting stress in the English language, particularly in word stress. The difficulty of grasping word stress in English may result in altering the meaning of the word. For instance, a learner may pronounce the verb (convict) as the noun (convict) where the stress position is completely different. Reima (2007) summarized the Arabic stress as follows: 1- If a word contains one super heavy syllable or more, stress falls on the last super heavy syllable as in: 2- If a word contains heavy and light syllables, stress falls on the heavy syllable before the final syllable (nonà ¢Ã¢â€š ¬Ã‚ final heavy syllable) as in: 3- If a word contains light syllables, stress falls on the first syllable as in: 4- If a word is a present or a past verb, stress falls on the first syllable as in: 5- If a word is a masculine or feminine Arabic noun, stress falls on the second syllable as in: 1.3 Intonation According to Swan Smith (2001) Arabic and English have closely similar intonation patterns, especially in meaning and contour. Reima (2007) summarized the Arabic stress as follows: 1- In Arabic, falling intonation is used at the end of: Declarative statements: the voice starts on amid pitch, rises slightly on the last stressed syllable and drop to a low pitch at the end as in: In commands as in: In Whà ¢Ã¢â€š ¬Ã‚ questions: voice is high in stressed syllable and falls quickly to mid pitch for the rest of the sentence as in: 2- In Arabic, risingà ¢Ã¢â€š ¬Ã‚ falling intonation is normally used at the end of: Yesà ¢Ã¢â€š ¬Ã‚ no questions as in: In utterances containing an element of protest or surprise: voice is flat, no rise no fall as in: In vocatives as in: In requests: the voice rises and falls somewhat, with an optional pause as in: 1.4 Rhythm In speech, rhythm has been defined as an effect involving the isochronous recurrence of some type of speech unit (Pike (1945), Abercrombie (1967), Bloch (1950). Dauer (1983) argued that the perception of different types of rhythm has mainly to do with differences in syllable structure, vowel reduction and types of stress. As to Arabic, according to Barkat et al. (1999) Arabic and its various dialects are all stress-timed. Based on the articles I have read, there is a consensus among researchers that Arabic listeners make use of speech rhythm to distinguish between speakers. For instance, Barkat et al. (1999) revealed that speakers of Arabic, due to rhythm, can distinguish between speakers of Arabic from North Africa and speakers living in the Middle East. Many studies have been conducted on Arabic rhythm. One of the important findings is the highness if vocalic intervals in the eastern Arabic dialects such as Palestine than western Arabic dialects such as Tunisia. 2-English 2.1 Syllable Structure According to Deterding poedjosoedarmo (1998) the distinction between light and heavy syllables can be helpful in predicting stress in English. The former contains a diphthong and/or several consonants in the coda while the latter contains a single short vowel. Heavy syllables tend to be stressed and light ones tend not to be stressed. The relationship between syllables and stress is extremely related. Deterding poedjosoedarmo (1998) argued there are not pure rules that help learners accurately predict stress placement in multisyllabic words; however, knowing the syllable structures- heavy and light syllables may solve the problem and prove useful. All in all, understanding stress rules in English entails understanding syllable structures first. English words are different in terms of the number of syllables. Some contain one, or two. Some may contain three or four. Some examples are provided below: 2.2 Stress Chomsky and Halle (1968) suggested that stress, like the Arabic language within English words is predictable, and several sets of complex rules have been proposed for predicting stress. Stress is very important in English as it is a major feature that distinguishes certain pairs of words. According to Christophersen (1996), English has the following stress rules: The great majority of twoà ¢Ã¢â€š ¬Ã‚ syllable words are stressed on the first syllable, e.g.: A number of words have two different stress patterns according to whether they are verbs or nouns, adjectives or verbs e.g.: Noticeably, nouns and adjectives are stressed on the first syllable while verbs are given stress on the second syllable. According to Deterding poedjosoedarmo (1998) derivational suffixes ca be classified into three types: stress-preserving, stress-attracting and stress-shifting. The first type does not change stress placement in words such as -ful, as in wonder/ wonderful. The second type receives primary stress such as -ee, as in employ/ emplyee. The last type make the stress shift such as -ive, as in reflex/ reflexive. The analysis of suffixation on stress placement is outlined below: When a suffix is added to a word, the new form is stressed on the syllable as was the basic word, e.g.: words ending in à ¢Ã¢â€š ¬Ã‚ tion , à ¢Ã¢â€š ¬Ã‚ sion , à ¢Ã¢â€š ¬Ã‚ ic , à ¢Ã¢â€š ¬Ã‚ ical, à ¢Ã¢â€š ¬Ã‚ ity , almost always have primary stress on the syllable preceding the ending , e.g. : If a word ending in à ¢Ã¢â€š ¬Ã‚ ate or à ¢Ã¢â€š ¬Ã‚ ment has only two syllables, the stress falls on the last syllable if the word is a verb, but on the first syllable if the word is a noun or an adjective. When stressed , the ending is pronounced [eÉ ªt], [mÉâ„ ¢nt] ; when unstressed, it is pronounced [ t], [mÉâ„ ¢nt], e.g. : If a word ending in à ¢Ã¢â€š ¬Ã‚ ate, à ¢Ã¢â€š ¬Ã‚ ment has more than two syllables, the main stress will fall on the third syllable from the end. In verbs, the final syllable is pronounced [eÉ ªt] , [mÉâ„ ¢nt]; in nouns it is pronounced [ t], [mÉâ„ ¢nt] , e.g.: Stress placement is also affected by compounding. When two roots are combined to produce new words, the resulting word is called a compound (Deterding poedjosoedarmo 1998 (p. 100). The rules are summarized below: compound nouns have a primary stress on the first component, e.g.: In compound verbs, the primary stress falls on the second component, e.g.: In the intensiveà ¢Ã¢â€š ¬Ã‚ reflexive pronouns, the stronger accent falls on the last syllable ,e.g.: Numbers ending in à ¢Ã¢â€š ¬Ã‚ teen may receive primary stress on either syllable, e.g.: In words ending in à ¢Ã¢â€š ¬Ã‚ ion, à ¢Ã¢â€š ¬Ã‚ sive, the stress falls on the last vowel before the ending .e.g.: The majority of English compounds have single stress .e.g.: All compounds with a present participle, as the first element, have a single stress, e.g.: A double stress is used in compounds of two nouns, if the first noun indicates the material of which or with which the second is made, e. g.: A double stress is used in compounds that have two nouns, each noun indicates a distinct characteristic of the same person or thing, e.g. : In most sentences, some words are more important than others and we indicate this by the way we stress or unstress them. The following words are usually unstressed: articles: a, an, the, prepositions such as at etc. personal pronouns such as I etc. possessive adjectives such as my etc. relative pronouns such as who etc. conjunctions such as and etc. The following words are usually stressed: nouns, verbs, adjectives, adverbs, demonstrative interrogatives, e.g.: He shall send it to you. She cooks three meals each day. In an hour, he will be ready to send it. This new car is to be barked here. 2.3 Intonation Roach (2001) pointed out that intonation is difficult to define. Generally, intonation is the melody of speech and is to be analyzed in terms of variations of pitch. It is known that intonation can indicate different types of utterances, such as statements, questions, commands, attitudes and emotions of the speaker. Reima (2007) summarized the intonation rules as follows: A) In English, risingà ¢Ã¢â€š ¬Ã‚ falling intonation is normally used at the end of: Simple statements of facts (declarative statements), e.g.: Commands: Questions which begin with an interrogative word, i.e., B) In English, rising intonation is normally used in the following cases: At the end of yesà ¢Ã¢â€š ¬Ã‚ no questions: In requests: C) In utterances containing an element of protest or surprise: 2.3 Rhythm English, with an alternation of stressed and unstressed syllables, is obviously stress-timed. Deterding poedjosoedarmo (1998) stated that rhythm is important in English because many cases of miscommunication can be attributed to failure to interpret familiar words as they are uttered with an unfamiliar rhythm pattern. For example, the speaker may say talking to themselves stressing on talk and them. If a native speaker hears these words, he will misunderstand the words and interpret them as taking to damsels. So, the unexpected rhythm pattern contributed to misunderstanding. As stated above, English words may contain one or more syllables. These words contain syllables (stressed) that are louder, clearer than others (unstressed). Gilbert (1984) believed that the combination of these stressed and unstressed syllables results in the rhythm found in English words. This combination also shows the strength, length and pitch of syllables. Moreover, sentences in English, like words, have r hythm. Dauer, (1993) argued that if one wants to have good sentence rhythm, she/he needs to know how to join syllables together into larger unites besides the clear difference between stressed and unstressed syllables. Problems in learning English in terms of prosody Arab learners find it easy to grasp the predictable word stress in their language; however, they face problems in grasping the unpredictable nature of English word stress. Sentence rhythm is alike in both languages so that Arab learners avoid contracted forms and elision when they read loudly. As a result, heavy staccato rhythm can be found in their reading. Regarding intonation, Swan Smith (2001) found out that Arab learners tend to intone, reducing intonation to a low fall at the ends of phrases and sentences. According to Rababah, (2002) Arab learners face problems that are related to stress, intonation and other features of prosody due to some difference in pronunciation between the two languages. English word pattern with (-ism) suffix receive their stress on the antepenultimate or pre- antepenultimate syllable, but they never receive it on the penultimate or final syllable. Quite contrary to this, in the pronunciation of the Arab learners of English, it is often noticed that stress in such word patterns tend to be consistently shifted to the penultimate (before the final) syllable. According to Ryan Meara (1999) Arab learners confuse English words due to the number of syllables and the shift of stress syllables as in the following example:

American Imperialism and Early Progressives Essay

The issues America had with other countries all revolved around things like that. There was the Louisiana Purchase. There was the Mexican-American War. There was the â€Å"54-40 or Fight† crisis involving England and the Oregon Territory. Beginning with the Spanish-American War, the US turned towards expanding its power and having more of an impact on the international scene. The US then did things like taking and running the Philippines. It pushed for the â€Å"Open Door† in China. The war represented the first major military engagement for the United States borders since the Mexican-American War and led to a desire of United States interests throughout the Caribbean and into the western Pacific region . The war’s outcome led to dramatic increases in the United States navy budget and U. S military involvement in the Philippines, resulting in a three-year war. The Spanish-American War created policies promoting overseas investments and expansion, later referred to as â€Å"dollar diplomacy† under President Taft. Before that, this expanded policy could be seen in the Open Door policy regarding China. It could also be seen in President Theodore Roosevelt’s engineering a revolt in Panama against the Colombian government and then negotiating for the Panama Canal Zone and construction of the Panama Canal. 2) Explain how the following individuals responded to the economic and social problems created by the industrialization during the late nineteenth and early twentieth centuries: Jane Addams, Andrew Carnegie, Samuel Gompers, Upton Sinclair Thesis: Industrialization may have created a dramatic increase in wealth but brought along social and economic problems, Andrew Carnegie responded to these problems with the gospel of wealth, Sinclair attacked corruption in industry’s, Jane Addams with Hull Houses and movements for women and Samuel Gompers with the AF of L. Addams focused on poverty, low wages, poor conditions and the need to assimilate immigrants. Her goal was to help with the poverty and bad lives of of urban life. She established a settlement house, Hull House, in Chicago in 1889. 00 settlement houses were established across America because of her. She advocated the regulatory movement for slums and factories that opposed child labor and sweatshops and advocated for the 8-hour working day for women. Carnegie did want to fix the issues of the emerging economy with his vertical integration of the steel industry. Carnegie built wealth around efficient monopolistic operations, vertical integration, lowest possi ble wages, exploitation of workers, and forbidding unions. He advocated the Gospel of Wealth, and economic survival of the fittest. Yet, Carnegie also held that excess wealth was a trust for communities, and he established the many Carnegie funded public libraries. Altogether he gave away over $150 million. Gompers organized unions into the American Federation of Labor; unions were independent but cooperated on bread and butter issues. He wanted higher wages, fewer working hours, business liability for injuries, mine safety laws, and leverage of skilled unions; the AFL coordinated strikes and boycotts. The AFL had 2 million members by 1904 but mostly omitted semi- and unskilled workers and women. Sinclair wrote the book The Jungle in 1906 and described meatpacking conditions, which made Theodore Roosevelt push for the 1906 Meat Inspection Act that established sanitary rules and inspections. Sinclair was an investigative muckraker focusing on abuse of workers. 3) How Successful were the progressive reforms during the period 1890 to 1915 with respect to the following: Industrial condition, Urban life, politics Progressive reform helped in seeing the creation of labor unions like The Knights of Labor and The American Federation of Labor. These unions pushed for higher pay and shorter work days for workers by attempting to organize the laborers. They achieved some of what they desired to but not all do to the advanced organization and quick methods of reacting of the companies. the reforms were successful in terms of industrial conditions. Examples of this: Creation of strong labor unions such as The Knights of Labor and the America along with Federation of Labor. These unions pushed for higher minimum wages and pay and shorter work days. Also, to rid of child labor. For Urban life improvements, i didnt develop an argument yet but i have these ideas that were successful: The Hull House, Public Education, Crime, Pollution and theres a whole lot more but im working on it now. Sorry but that’s all i have:( In addition, the Conserative reforms of Teddy Roosevelt and Taft. TR added the Yellow Stone National Park to a protective reserve. Taft built off of these ideas with more parks being made into reserves. How successful were progressive reforms during the period 1890-1915 with respect to TWO of the following? Industrial conditions; urban life; politics. The late 19th century and early 20th century were marked by a period of reforms known as Progressivism. During this time, leaders of Progressive reforms aimed to improve American lives by instigating changes that would influence politics and urban lifestyles. Progressivism generally helped improve the everyday life and reduced corruption within the nation’s legislations. During the Progressive Era, President Theodore Roosevelt adapted in 1904 what was known as the Square Deal program. This was the main program that outlined business relationships between the corporate leaders and the industrial workers and that fairness and equality would preside over the connection. However, in order to prevent a communistic society and maintain competition in the economy, Roosevelt did not eliminate all trusts. He declared that there were some â€Å"good† trusts, along with the bad ones. The â€Å"good† trusts were those that were free from corruption and would generally maintain a fair and just relationship between employer and employee. The program included the Sherman Antitrust Act, which demanded that the trusts be judged by the acts they have committed. This act successfully signaled the end of corrupt trusts, along with the passing of the Elkins Act. The Elkins Act prevented the rich and the well known to benefit and receive rebates on the railways. The Elkins Act forced the railroads to create an equal rate for people of all walks of life and it could not be subject to change. In the coal strike of 1902, hundreds of thousands of Americans refused to work in the mines without improvements to working conditions.

Bangus Production

FISHPOND ENGINEERING 1. INTRODUCTION Fishpond Engineering is the science of planning, designing and constructing ponds including water control structures. Although not entirely new in the Fish Farm industry, it has gained international acceptance and plays an important role for the efficiency of the farm management as well as in attaining higher farm production. Fishpond Engineering takes into consideration most especially the physical structures and economy of construction based on the proper engineering procedure and application. . SITE SELECTION AND EVALUATION OF EXISTING AREAS 2. 1 Water Supply Water supply is the first and most important factor to consider in the suitability of a fishpond site. Usually, water supply comes from a river, a creek or from the sea. It must meet the quality and quantity requirement of the pond system throughout the year. Water quality is affected by the physical, the chemical, and the biological parameters. Such parameters are affected by the 1) by-products and wastes resulting from urbanization, 2) agricultural pollutants such as pesticides and fertilizers, 3) industrial wastes from pulp mills, sugar, oil refineries, and textile plants, 4) radio-active wastes, 5) oil pollution arising navigational activities, uncontrolled spillage, and oil exploration. Some of these parameters are discussed in detail under fishpond management. Poor quality water sometimes causes the fouling of gates, screens or metal pipes. This happens when heavy dredging is being conducted in an area. Heavy dredging increases turbidity and causes the release of organic substances embedded in the soil. Once these organic substances are released, they use up oxygen causing high biological oxygen demand (BOD). Higher BOD causes oxygen depletion which in turn makes the water foul. Similar conditions also occur during floods. Water supply in tide-fed farms must be adequate especially during some months of the year when the height of high water is at minimum. This problem can be solved by proper gate design and by the use of pumps. The rate of volume flow of nearby tidal stream needs also to be considered; measurement is made during the dry stream flow and during floods. The data obtained give the developer the minimum and maximum rates of discharge. These are important requirements in fish farm design. For details, refer to Annex I. 2. 2 Tidal Characteristic and Ground Elevation The suitability of a tide-fed area for a â€Å"bangus† fishpond project depends on the relationship between the tidal characteristic of the area and its ground elevation. The only free source of energy that could be tapped for flooding a brackishwater coastal pond is tidal energy which is available once or twice a day depending on geographical location. Five reference stations in the Philippines exhibit five peculiarly different patterns during some months of the year. Figure 1 shows in a graphical form the relationship of natural ground elevation to tidal characteristic. Tables 1 and 2 show such relationships as they are applicable to the six stations of reference. [pic] Figure 1 – Suitability of Proposed Fishpond Site Based on Tidal Characteristic and Ground Elevation. |LOCALITY |Elevations in Meters Above Mean Lower Low H20 | | |Mean High Water (MHW) |Mean Sea Level (MSL) |Mean Low Water (MLW) | |Pier 13, South Harbor, Manila |0. 872 |0. 479 |0. 104 | |Pier 2, Cebu City |1. 50 |0. 722 |0. 183 | |Legaspi Port, Legaspi City |1. 329 |0. 744 |0. 165 | |Sta. Ana Port Davao City |1. 405 |0. 753 |0. 101 | |Port of Poro, San Fernando, La Union |- |0. 372 |- | |Jolo Wharf Jolo, Sulu |0. 631 |0. 38 |0. 034 | Table 1. List of Primary Tide Stations and Datum Planes |   |Highest |Lowest |Absolute |Normal daily fluctuation |R E M A R K S | | |recorded tide |recorded tide|annual range |low/high(range) (m) | | | |(m) |(m) |(m) | | | |PHILIPPINES |1. 4 |(-)0. 21 |1. 25 |(-)0. 03/0. 61(0. 64) |Tidal fluctuation too | |San Fernando, La | | | | |narrow for proper | |Union | | | | |fishpond management | |Manila City |1. 46 |(-)0. 34 |1. 8 |0. 14/1. 05(0. 1) |T idal fluctuation | | | | | | |slightly narrow for | | | | | | |proper fishpond | | | | | | |management | |Legaspi City |1. 83 |(-)0. 4 |2. 23 |1. 09/1. 40(1. 9) |Tidal fluctuation | | | | | | |favorable for proper | | | | | | |fishpond management | |Cebu City |1. 98 |(-)0. 4 |2. 38 |(-)0. 03/1. 49(1. 52) |-do- | |Davao City |1. 98 |(-)0. 49 |2. 47 |(-)0. 03/1. 77(1. 80) |-do- | |Jolo, Sulu |1. 19 |(-)0. 12 |1. 31 |(-)0. 03/0. 98(1. 1) |Tidal fluctuation | | | | | | |slightly narrow for | | | | | | |proper fishpond | | | | | | |management | Table 2. Suitability of Six Tidal Stations of Reference for Fish Farms Areas reached only by the high spring tides should be ruled out as it is costly to move large quantities of soil during the process of excavation. There is that other problem of where to place the excess materials. While these can be solved by constructing high and wide perimeter dikes, putting up more dikes will create narrow compartments resulting in less area intended for fish production. Low areas on the other hand will require higher and more formidable dikes which may mean that earth will have to be moved long distances. The pond bottom should not be so low that drainage will be a problem. The best elevation for a pond bottom therefore, would at least be 0. 2 meter from the datum plane or at an elevation where you can maintain at least 0. meter depth of water inside a pond during ordinary tides. This index should satisfy the requirements of both fish and natural fish food. 2. 2. 1 Tides The attractive forces of both the moon and the sun on the earth surface which changes according to the position of the two planets bring about the occurrence of tides. Tides recur with great regularity and uniformity, although tidal charac teristic vary in different areas all over the world. The principal variations are in the frequency of fluctuation and in the time and height of high and low waters. When the sun, the moon and the earth are in a straight line, greater tidal amplitudes are produced. These are called spring tides. Tides of smaller amplitudes are produced when the sun and the moon form the extremes of a right triangle with the earth at the apex. These are called neap tides. When high and low waters occur twice a day it is called a semi-diurnal tide. When the high and the low occur once a day it is called a diurnal tide. The moon passes through a given meridian at a mean interval of 24 hours and 50 minutes. We call this interval one lunar day. Observations reveal that the mean interval between two successive high (or low) waters is 12 hours and 25 minutes. Thus, if there is a high water at 11:00 A. M. today, the next high water will take place 12 hours and 25 minutes later, i. e. , 11:25 P. M. and the next will be at 11:50 A. M. of the following day. Each day the time of tide changes an average of 50 minutes. The difference in the sea water level between successive high and low waters is called the range. Generally, the range becomes maximum during the new and full moon and minimum during the first and last quarter of the moon. The difference in the height between the mean higher high and the mean lower low waters is called the diurnal range. The difference in the tide intervals observed in the morning and afternoon is called diurnal inequality. At Jolo, for instance, the inequality is mainly in the high waters while at Cebu and Manila it is in the low waters as well as in the high waters. The average height of all the lower of low waters is the mean lower low (MLLW), or (0. 00) elevations. This is the datum plane of reference for land elevation of fish farms. Prediction of tides for several places throughout the Philippines can be obtained from Tide and Current Tables published annually by the Bureau of Coast and Geodetic Survey (BCGS). These tables give the time and height of high and low water. The actual tidal fluctuation on the farm however, deviates to some extent from that obtained from the table. The deviation is corrected by observing the time and height of tidal fluctuation at the river adjacent to the farm, and from this, the ratio of the tidal range can be computed. From the corrected data obtained, bench marks scattered in strategic places can be established. These bench marks will serve later on as starting point in determining elevations of a particular area. 2. 2. 2 Tide prediction There are six tide stations in the Philippines, namely: San Fernando, Manila, Legaspi, Cebu, Jolo and Davao stations. Reference stations for other places are listed under the â€Å"Tidal Differences† and â€Å"Constants† of the Tide and Current Tables. The predicted time and height of high and low waters each day for the six tide stations can be read directly from the table. Tide predictions for other places are obtained by applying tidal differences and ratios to the daily predictions. Tidal differences and ratios are also found in the Tide and Current Tables. Let us take for example, the tidal predictions for Iloilo on 23 Sept. 1979. Looking through the tidal differences and constants of the Tide Tables, you will find that reference station for Iloilo is Cebu. The predicted time and height of tides for Cebu obtained from the tide tables on 23 Sept. 1979 are as follows: |High |Low            | |Time |: |Height |Time |: |Height | |0004 |: |1. 3 m |0606 |: |0. 14 m | |1216 |   |1. 52 m |1822 |   |0. 18 m | (The heights are in meters and reckoned from mean lower low water (MLLW); 0000 is midnight and 1200 is noon). Again, from the table on Tidal Differences and Constants, the corrections on the time and height of high and low waters for Iloilo are as follows: |Time |Height of High Water |Height of Low Water | |+ 0 hr. 05 min. |+ 0. 09 |+ 0. 3 | Thus, the corrected time and heights of high and low waters for Iloilo are: |High |Low            | |Tim e |: |Height |Time |: |Height | |0009 |: |1. 52 m |0611 |: |0. 17 m | |1221 |: |1. 61 m |1827 |: |0. 21 m | 2. 2. 3 Height of tide at any given time The height of the tide at any given time of the day may be determined graphically by plotting the tide curve. This can be done if one needs to know the height of the tide at a certain time. The procedure is as follows: On a cross-section paper, plot the high (H) and the low (L) water points between which the given time lines (see Fig. 2). Join H and L by a straight line and divide it into four equal parts. Name the points as Q1, M and Q2 with M as the center point. Locate point P1 vertically above Q1 and P2 vertically below Q2 at a distance equal to one tenth of the range of the tide. Draw a sine curve through points H, P1, M, P2 and L. This curve closely approximates the actual tide curve, and heights for any time may be readily scaled from it. Figure 2 shows the curve on 23 Sept. 1979 for Iloilo. H is 1. 61 m at 12:21 hr and L is 0. 21 m at 18:27 hr. Since the range is 1. 40 m, P1 is located 0. 14 units above Q1 and P2 is located 0. 14 units below Q2. The height of the tide at 14:30 hr is given by point T to be 1. 22 m. [pic] Figure 2. Height of Tide at any Given Time for Iloilo on 23 Sept. 1979. 2. 3 Soil Properties Most of our fishponds are constructed on tidal lands consisting of alluvial soils which are adjacent to rivers or creeks near the coastal shores and estuaries at or near sea level elevation. If you pick up a handful of soil and examine it closely, you will find that it is made up of mineral and organic particles of varying sizes. The mineral particles are the clay, silt, and sand while the organic particles are plant and animal matter at various stages of decomposition. Soils are assigned with textural classes depending on their relative proportion of sand, silt and clay. Each textural class exhibits varying colors which are based on their chemical composition, amount of organic matter and the degree of decomposition. U. S. Department of Agriculture Classification System has classified soil as: |GENERAL TERMS | |Common Names |Texture |Basic Soil Textural Class Names | |1. |Sandy Soils |Coarse |Sandy | | | | |Sandy Loam | |2. Loamy Soils |Moderately Coarse |Sandy Loam | | | | |Fine sandy Loam | | | |Medium |Very fine Sandy Loam | | | |Moderately fine |Loam | | | | |Silty Loam | | | | |Silt | |3. |Clayey Soils |Fine |Sandy Clay |Clay Loam | | | | |Silty Clay |Sandy Clay Loam | | | | |Clay |Silty Clay Loam | Many properties of soil, which are related to its texture, determine how well suited it is for fishpond purposes. A sandy loam, for instance, is more porous than silty loam and the latter will hold more nutrients than the former. Clay or sandy clay may be the best for dike construction but not as good as clay loam or silty clay loam in terms of growing natural food. So, in general, finer textured soils are superior for fishpond purposes because of their good water retention properties. Each soil texture exhibits different workability as soil construction material. Studies conducted show that clayey soil is preferred for diking purposes. Suitability of a soil class as dike material decreases with decreasing percentage of clay present in the mixture (see Table 3). CLASS |RELATIVE CHARACTERISTIC |COMPACTION CHARACTERISTIC |SUITABILITY FOR DIKE | | | | |MATERIAL | | |PERMEABILITY |COMPRESSIBILITY | | | |Clay |impervious |medium |fair to good |excellent | |Sandy clay |impervious |low |good |good | |Loamy |semi-pervious |high |fair to very |fair | | |to | | | | | |impervious |high |poor | | |Silty |se mi-pervious to |medium to |good to very |poor | | |impervious |high |poor | | |Sandy |pervious |negligible |good |poor | |Peaty |- |- |- |very poor | Table 3. Relationship of Soil Classes and Suitability for dike material Sediments are a dominant and observable characteristic in lower areas of brackishwater swamplands. Field observations and laboratory analysis of soil samples taken reveal that the majority have a thick layer of loose organic sediments which make them unsuitable for fishpond development and other infrastructures. Engineering and other technical considerations indicate that areas having this type of soil are rather difficult to develop because it is directly related to future land development problems such as (1) subsidence and related flood hazards, (2) unavailability of stable and indigenous soil materials for diking, and (3) unavailability of land with adequate load bearing capacity for future infrastructures such as buildings for storage and production facilities. Areas dominated by organic and undecomposed sediments are expected to experience considerable subsidence which eventually result to loss in effective elevation of the land after development as a result of drainage or controlled water table. Since elevation of most tidal lands converted to brackishwater fishponds are generally one meter above MLLW, any future loss of elevation due to subsidence shall predispose the area to severe drainage and flooding problems due to blocking effect of seawater during high tides. Organic and undecomposed sediments are not a good foundation for dikes nor for diking material. Fishpond areas dominated by this type of soil will mean that there is an inadequacy of indigenous soil materials for diking or filling of lower areas. In the absence of good soil materials, the site under consideration will require importing of soils from the adjoining areas which will make the system of development a very expensive process, or considerable excavation for diking will cause (1) unnecessary exposure of acid organic layers, (2) difficulty in leveling, (3) high cost of dike maintenance and (4) technical problems on seepage losses which will cause difficulty in maintaining water levels in the pond. 2. 3. 1 Field method for identification of soil texture Sand – Soil has granular appearance. It is free-flowing when in a dry state. A handful of air-dry soil when pressed will fall apart when released. It will form a ball which will crumble when lightly touched. It cannot be ribboned between thumb and finger when moist. Sandy Loam – Essentially a granular soil with sufficient silt and clay to make it somewhat coherent. Sand characteristic predominate. It forms a ball which readily falls apart when lightly touch ed when air-dry. It forms a ball which bears careful handling without breaking. It cannot be ribboned. Loam – A uniform mixture of sand, silt, and clay. Grading of sand fraction is quite uniform from coarse to fine. It is soft and has somewhat gritty feel, yet is fairly smooth and slightly plastic. When squeezed in hand and pressure is released, it will form a ball which can be handled freely without breaking. It cannot be ribboned between thumb and finger when moist. Silty Loam – It contains a moderate amount of finer grades of sand and only a small amount of clay; over half of the particles are silt. When dry, it may appear quite cloddy; it can be readily broken and pulverized to a powder. When air-dry, it forms a ball which can be freely handled. When wet, soil runs together and puddles. It will not ribbon but has a broken appearance; it feels smooth and may be slightly plastic. Silt – It contains over 80% of silt particles with very little fine sand and clay. When dry, it may be cloddy; it is readily pulverized to powder with a soft flour-like feel. When air-dry, it forms a ball which can be handled without breaking. When moist, it forms a cast which can freely be handled. When wet, it readily puddles. It has a tendency to ribbon with a broken appearance; it feels smooth. Clay Loam – Fine texture soils break into lumps when dry. It contains more clay than silt loam. It resembles clay in a dry condition. Identification is made on physical behaviour of moist soil. When air-dry, it forms a ball which can be freely handled without breaking. It can be worked into a dense mass. It forms a thin ribbon which readily breaks. Clay – Fine texture soils break into very hard lumps when dry. It is difficult to pulverize into a soft flour-like powder when dry. Identification is based on cohesive properties of the moist soil. When air-dry, it forms long thin flexible ribbons. It can be worked into a dense compact mass. It has considerable plasticity, and can be moulded. Organic Soil – Identification is based on its high organic content. Much consists of thoroughly decomposed organic materials with considerable amount of mineral soil finely divided with some fibrous remains. When considerable fibrous material is present, it may be classified as peat. Soil color ranges from brown to black. It has high shrinkage upon drying. 2. 4 Studies of Watershed and Flood Hazard 2. 4. 1 Watershed A watershed is a ridge of high land draining into a river, river system or body of water. It is the region facing or sloping towards the lower lands and is the source of run-off water. The bigger the area of the watershed, the greater the volume of run-off water that will drain to the rivers, creeks, swamps, lakes or ocean. Precipitation from a watershed does not totally drain down as run-off water. A portion of the total rainfall moving down the watershed's surface is used by the vegetation and becomes a part of the deep ground water supply or seeps slowly to a stream and to the sea. The factor affecting the run-off may be divided into factors associated with the watershed. Precipitation factors include rainfall duration, intensity and distribution of rainfall in the area. Watershed factors affecting run-off include size and shape of watershed, retention of the watershed, topography and geology of the watershed. The volume of run-off from a watershed may be expressed as the average depth of water that would cover the entire watershed. The depth is usually expressed in centimeters. One day or 24-hours rainfall depth is used for estimating peak discharge rate, thus: Volume of Flood Run-off (Q) [pic]+ S1 Engineering Field Manual For Conservation Practices, 1969, pp 2–5 to 2–6 |where |Q |= |accumulated volume of run-off in centimeters depth over the drainage area | | |P |= |accumulated rainfall in cm depth over the drainage area | | |Ia |= |initial obstruction including surface storage, interception by vegetation and | | | | |infiltration prior to run-off in cm depth over the drainage area | | |s |= |potential maximum retention of water by the soil equivalent in cm depth over the | | | | |drainage area | 2. 4. 2 Flood hazard Floods are common in the Philippines due to overflowing of rivers triggered by typhoons and the southwest monsoon rain prevailing over the islands during the rainy season. Overflow of the rivers is largely attributable to the bad channel characteristic such as steep slopes as well as meandering at the lower reach of the river. The network of the tidal streams in some delta areas has been rendered ineffective in conveying the flood-water to the sea due to fishpond construction. Flooding is common in this country and is considered the most destructive enemy of the fishpond industry. The floods of 1972 and 1974 greatly affected the fishpond industry in Central Luzon causing damage amounting to millions of pesos. Because of the floods, fishponds became idle during the time necessary for operators to make repairs and improvements. Floods cannot be controlled, but what is important is to know how a fishpond can be free to some extent from flood hazard. In order to prevent frequent flooding, it is necessary to know the weather conditions in the area where the fishpond project is located. The highest flood occuring in an area can be determined by proper gathering of information. In big rivers, the Ministry of Public Works (MPW) records the height of flood waters during rainy seasons. However, in areas where the MPW has no record, the best way is by gathering information from the people who have stayed in the area for many years. The size of the creek, river and drainage canal should also be determined to find out whether it can accommodate the run-off water or flood water that drains in the area once the fishpond project is developed. Records of the highest flood in the site, especially during high tide, is very important. It will be the basis in providing allowance for the drainage of flood water coming from the watershed. 2. 5 Climatic Conditions Climate has been described in terms of distribution of rainfall recorded in a locality during the different months of the year. In the Philippines, it is classified into four climatic zones preferably called weather types, namely: |Type I |- |Two pronounced seasons; dry from November to April and wet uring the rest of the year. | |Type II |- |No dry season with very pronounced maximum rainfall from November to January. | |Type III |- |Season not very pronounced; relatively dry from November to April and wet during the | | | |rest of the year. | |Type IV |- |Rainfa ll more or less evenly distributed throughout the year. | The elements that make up the climate of a region are the same as those that make up the weather, the distinction being one mainly of time. But the elements that concern most fishpond operators are the rainfall, temperature and the prevailing wind direction because they greatly affect fish production directly or indirectly. Data on rainfall and wind direction are very necessary in planning the layout and design of pond system. Knowing past rainfall records, you can more or less decide whether it will be necessary to include a drainage canal in the layout, and how large it will be when constructed. Knowing past rainfall records will also be necessary in computing the height of the secondary and tertiary dikes. Wind on the other hand, plays a role in fishpond design. Strong wind generates wave actions that destroy sides of the dike. This causes great expense in the construction and maintenance. However, this problem can be minimized with proper planning and design. For instance, longer pond dimension should be positioned somewhat parallel to the direction of the prevailing wind (see Fig. 3). This will lessen the side length of the dike exposed to wave action. This orientation of pond compartments will also have some advantageous effects in the management aspect. [pic] Figure 3. Layout of Pond Compartments Oriented to the Prevailing Wind Direction Nearly every location is subject to what is called the prevailing wind, or the wind blowing in one direction for a major portion of the year. Monsoons are prevailing winds which are seasonal, blowing from one direction over part of the year and from the opposite direction over the remaining part of the year. Trade winds, which generally come from the east, prevail during the rest of the year when the monsoons are weak. [pic] Figure 4. Wind Directions Wave action in ponds is caused by wind blowing across the surface. One cannot totally control wave action in ponds although it can be minimized. In typhoon belt areas or in areas where a strong wind blows predominantly, it is better to include wind breakers in planning the layout of ponds. 2. 6 Type and Density of Vegetation Mangrove swamps occur in abundance on tidal zones along the coasts of the Philippines which are being converted into fishponds for fish production, but not all mangrove swamps are suitable for fishpond purposes. Some are elevated and are not economically feasible for development; others have too low an elevation to develop. The distribution of mangrove species in tropical estuaries depend primarily on the land elevation, soil types, water salinity and current. It has been observed that â€Å"api-api† and â€Å"pagat-pat† trees (Avicennia) abound in elevated areas while â€Å"bakawan† trees (Rhizophora) are mostly found in low areas. It has also been observed that nipa and high tannin trees have a long-lasting low pH effect on newly constructed ponds. Presence of certain shrubs and ferns indicate the elevation and frequency of tide water overrunning the area. Certain aquatic plants such as water lily, eel grass and chara sp. indicate low water salinities. The type and density of vegetation, the size, wood density and root system of individual trees greatly affect the method of clearing, procedure of farm development and construction cost. Thickly vegetated areas, for instance, will take a long time to clear of stumps. Density of vegetation is classified according to kind, size and quantity per unit area. This is done to determine the cost of land clearing and uprooting of stumps. One method used is by random sampling. The process requires at least five or more samples taken at random, regardless of size, and vegetation is classified according to kind, size and number. Then the findings are tabulated and the average of the samples is determined. However, vegetation of less than 3 cm in diameter is not included. The total vegetation of the area is determined as follows: [pic] |Station |NIPA |BAKAWAN |API-API |LIPATA |BIRIBID | |(20? 20) | | | | | | | |No|Av|No. | | |. |e. | | | | |Si| | | | |ze| | | |b |= |line GD | | |h |= |height or distance | The total area of the irregular figure is equal to the sum of A1, A2, A3, A4 and A5. Example: Find the area of an irregular figure shown in Figure 13 using the triangulation method. Solution: [pic] [pic] b. Trapezoidal Rule [pic] Figure 14. Area Determination Using the Trapezoidal Rule If a field is bounded on one side by a straight line and on the other by a curved boundary, the area may be computed by the use of the trapezoidal rule. Along a straight line AB, Fig. 14, perpendicular offsets are drawn and measured at regular intervals. The area is then computed using the following formula: [pic] Where: |ho, hn |= |length of end offsets | |Sh |= |sum of offsets (except end offsets) | |d |= |distance between offsets | Example: In Fig. 4, if the offsets from a straight line AB to the curved boundary DC are 35, 25, 30, 40, and 10, and are at equal distance of 30, what is the included area between the curved boundary and the straight line? Solution: |Area ABCD |= |[pic] | | |= | | | |= |117. 5 ? 30 | | |= |3,525 sq. m. | 3. 2. 3 Laying out right angles and parallel lin es a. Laying out right angles. For instance it is required to lay out the center line of dike B (see Fig. 15) perpendicular to that of dike A using a tape. A simple corollary on the right triangle states that a triangle whose sides are in proportion of 3, 4, and 5 is a right triangle, the longest side being the hypotenuse. In the figure, point C is the intersection of the two dike centerlines. One man holds the zero end of the tape at C and 30 m is measured towards B. Again from C, measure 40 m distance towards A and then from A' measure a distance of 50 meters towards B'. Line CB' should intersect line A' B'. Therefore, line CB is formed perpendicular to line CA. It is always desirable to check the distances to be sure that no mistake has been made. [pic] Figure 15. Laying Out Right Angles b. Laying out parallel lines. In Figure 16, CD is to be run parallel to AB. From line AB erect perpendicular lines EF and GH in the same manner described in the previous discussion. Measure equal distances of EF and GH from line AB and the line formed through points C' and D' is the required parallel. [pic] Figure 16. Laying Out Parallel Lines 3. 3 Topographic Survey 3. 3. 1 Explanation of common terms a. Bench Mark (BM). A bench mark is a point of known elevation of a permanent nature. A bench mark may be established on wooden stakes set near a construction project or by nails driven on trees or stumps of trees. Nails set on trees should be near the ground line where they will remain on the stump if the tree will be cut and removed. Procedure on setting up a bench mark is attached as Annex 4. It is a good idea to mark the nail with paint and ring the tree above and below also in case a chain saw is used to cut down the tree. The Philippines Bureau of Coast and Geodetic Survey has established bench marks in nearly all cities and at scattered points. They are generally bronze caps securely set on stones or in concrete with elevations referenced to mean sea level (MSL). The purpose of these bench marks is to provide control points for topographic mapping. b. Turning Point (TP). A turning point is a point where the elevation is determined for the purpose of traverse, but which is no longer needed after necessary readings have been taken. A turning point should be located on a firm object whose elevation will not change during the process of moving the instrument set up. A small stone, fence post, temporary stake driven into the ground is good enough for this purpose. c. Backsight (BS). Backsight is a rod reading taken on a point of known elevation. It is the first reading taken on a bench mark or turning point immediately after the initial or new set-up. d. Foresight (FS). Foresight is a rod reading taken on any point on which an elevation is to be determined. Only one backsight is taken during each set-up; all other rod readings are foresights. e. Height of Instrument (HI). Height of instrument is the elevation of the line of sight above the reference datum plane (MLLW). It is determined by adding the backsight rod reading to the known elevation of the point on which the backsight was taken. 3. 3. 2 Transit-stadia method of topographic survey The following describes the procedure of determining ground elevations using the engineer's level with a horizontal circle and stadia rod. A transit may be substituted for the level if care is exercised in leveling the telescope. It is assumed that a bench mark with known elevation has been established. a. Establish your position from a point of known location on the map. In Figure 17, point B is â€Å"tied† to a point of known location on the map, such as corner monument C of the area. This is done by sighting the instrument at C and noting down the azimuth and distance of line BC. The distance of B from C is determined by the stadia-method discussed under area survey. [pic] Figure 17. Establishing Position from a Point of Known Location on the Map b. Take a rod reading on the nearest bench mark (BM), as shown in Figure 18, previously installed for such purpose. This reading is called the backsight (BS), the rod being on a point of known elevation. The height of the instrument (HI) is then found by adding the elevation of the bench mark (Elev. ) and backsight (BS), thus: H. I. = Elev. + B. S. [pic] Figure 18. Transit-stadia Method of Topographic Survey c. The telescope is sighted to point D, or any other points desired, and take the rod reading. The reading is called the foresight (F. S. ), the rod being on a point of known elevation. Ground elevation of point D is then determined by subtracting the foresight (F. S. ), from the height of the instrument (H. I. ), thus: Elevation = H. I. – F. S. d. Similar procedure is used in determining the ground elevation of several points which are within sight from the instrument at point B. The azimuth and distance of all the points sighted from point B are read and recorded in the sample field notes such as shown in Figure 19. |Sta. |Sta. |B. S. | |Occ. |Obs. | |HAT |= |Highest Astronomical Tide | |GS |= |Elevation of the ground Surface | |MF |= |Maximum Flood level | |FB |= |Allowance for Free Board | |%S |= |Percent Shrinkage and settlement | 1. The design height of a secondary dike is calculated using the following formula: [pic] Where: Hs |= |Height of the secondary dike | |HST |= |Highest Spring Tide | |GS |= |Elevation of the ground Surface | |MR |= |Maximum Rainfall within 24 hours | |FB |= |Allowance for Freeboard | |%S |= |Percent Shrinkage and settlement | 2. The design height of a tertiary dike is calculated using the following formula: [pic] Where: Ht |= |Height of the tertiary dike | |DWL |= |Desired Water Level | |GS |= |Elevation of the ground Surface | |MR |= |Maximum Rainfall within 24 hours | |FB |= |Allowance for Freeboard | |%S |= |Percent Shrinkage and settlement | [pic] Figure 28. Design of Different Dikes 4. 3. 3 Canals. About one to two percent of the total farm area is used in the canal system. The main water supply canal starts from the main gate and usually traverses the central portion of the fishfarm. The canal bed should not be lower than, but rather sloping towards, the floor elevation of the main gate. Generally, the canal bed is given a slope of 1/1500 or one meter difference in elevation for a horizontal distance of 1,500 m. A one meter opening main gate will have a canal bed at least 3. m. wide. This width is enough to supply a 10–15 hectares fishpond system considering that the canal dikes have a ratio of 1:1 slope. Secondary water supply canals are constructed in portions of the farm which cannot be reached by the main canal. It starts from the main canal and traverses the inner portion of the fishpond. It is usually constructed in large fishpond areas and smaller than the main canal. Generally, secondary supply canal has a bed width of 2. 0 m. A tertiary canal is usually constructed to supply water in the nursery and transition ponds. Because of the small size, it is sometimes said to be a part of the nursery pond system. Some fish culturists modify the tertiary canal as a catching pond. This usually happens when the designed tertiary canal is short, Generally, a tertiary canal has a bed width of 1. 0–1. 5 m. A diversion canal, when necessary, is also constructed to protect the farm from being flooded with run-off water coming from the watershed. It must be strategically located so that run-off will empty on an established disposal area, natural outlets or prepared individual outlets. It should have the capacity to carry at least the peak run-off from the contributing watershed for a 10-year frequency storm. The slope of the diversion canal should be in such a way that water flows towards the drainage area. A drainage canal is constructed when there is a need to have a separate canal for draining rearing ponds. This is to improve water management in the pond system. It is usually located at the other side of the pond, parallel to the supply canal. A drainage canal is recommended in intensive culture, especially of shrimps. [pic] Figure 29. Design of Different Canals 5. PROJECT COST AND PROGRAMMING The worst error a prospective fishfarm operator can make is to develop an area without project cost estimates and a programme of development. Development money is wasted, and management of the area may be difficult or impossible. Poor planning is the major cause of project failure and even leads to personal bankruptcy. It is very necessary that preparation of the project cost estimates as well as programme of development be done before any construction is started. It is important to know approximately how much will be spent to finish the whole project. It is better that one knows how and when the project will be constructed and completed. The importance of the project cost estimates and programme of development should not be underestimated. 5. 1 Project Cost EStimates The cost of development can be estimated based on the 1) data gathered in the area, 2) proposed layout plan, and 3) design and specification of the physical structures and other facilities. 5. 1. 1 Pre-development estimates a. For the preparation of Feasibility Study. Whether the fishpond operator will apply for a loan in the Bank or he will use his own money to finance the development of a fishpond project, a feasibility study of the area is needed. The feasibility study will be his guide in the development and management of the project. All activities such as the development, management and economic aspects are embodied in the feasibility study. It is a specialized work by engineers, aquaculturist and an economist having special knowledge in fishfarming industry. Usually, for the preparation of the feasibility study, the group charges about 2% to 10% of the total estimated cost of development. b. For the Survey of the Area. An area survey includes a topographic survey, and re-location survey. Whether the area is owned by a private individual or by the government, an area survey by a licensed Geodetic Engineer is very important for the proper location and boundary of the land. It is one of the requirements in the application for a 25-year Fishpond Lease Agreement in the BFAR and also in the application for a loan in the Bank. It must be duly approved by the Bureau of Lands. A topographic survey is necessary in the planning and development of the project. A re-location survey must be conducted to check the validity of the approved plan as well as to avoid conflict in the future. An area and topographic survey done by a Geodetic Engineer will cost about [pic]400. 00 for the first hectare or a fraction thereof and [pic]50. 00 per hectare for the succeeding hectarages. Re-location survey is cheaper than the area and topographic survey. c. For the Construction of a Temporary Shelter. Experienced fishpond laborers generally do not live in the locality. To be more effective they need to have a place to stay during the construction activities. For the construction of a shelter house made of light material, assume a cost of [pic]300. 00/sq. m. of shelter. This includes materials and labor costs. d. For the Construction of Transport Facilities. Flatboats will be needed in the transport of mudblocks. A banca may be used in going to the site. Cost of construction varies from locality to locality. A flatboat with dimensions of 8†² ? 4†² ? 14†³ will cost around [pic]500. 00. A small banca will cost around [pic]600. 00. e. For Representation and Transportation Expenses. This item is not included in the cost of development of a fishpond project. However, it appears that a big amount is being incurred in representation and transportation expenses before the project is started. Example of expenditures are follow-ups of survey plan of the area, FLA application and bank loan. Other expenses are incurred in canvassing of supplies and materials, survey of manpower requirement and equipment needed in the development of a project. Representation and transportation expenses cover about 10–20 percent of pre-development cost. 5. 1. 2 Development Proper. a. For the Clearing of the Whole Area. Clearing the area of vegetation can be divided into three categories, namely: 1) cutting and chopping, 2) Falling and burning, and 3) uprooting and removal of stumps and logs. Generally, cutting and chopping costs about [pic]500. 00 per hectare; piling and burning costs about [pic]300. 00 per hectare; and for the uprooting of stumps and removal of logs, costs depend on their size and number per unit area. A hectare pond, for instance, having 200 stumps of size below 15 cm. in diameter will cost about [pic]800. 00. Stumps numbering 50 pieces with diameter over than 15 cm. will cost about [pic]1,000. 00 per hectare. Cost for the clearing depends upon the prevailing price in the locality. b. For the Construction and Installation of Gates. Cost of construction and installation of a gate can be calculated based on its design and specification proposed in the area. The two kinds of gate commonly constructed in fishponds ( concrete and wood) will be discussed separately. 1. Estimating the cost of construction and installation of a concrete gate: a. Based on the plan of a concrete gate, determine the area and volume of the walls, wings, floor, bridges, toes, aprons and cut walls and compute for the total volume using the following formula: A = L ? W V = A ? t VT = V = V1 + V2 + V3 + †¦ Where: A |= |Area |L |= |Length | |V |= |Volume |W |= |Width | |VT |= |Total volume |t |= |thickness | Determine the number of bags of cement, and the volume of gravel and sand by multiplying the total volume with the factors precomputed for a Class A mixture plus 10% allowance for wastage, thus: |No. of bag cemen t |= |(VT ? 7. 85) + 10% | |Volume of Gravel |= |(VT ? 0. 88) + 10% | |Volume of Sand |= |(VT ? 0. 44) + 10% | Class A mixture has a proportion of 1:2:4, that is one part of cement for every two parts of fine aggregate (sand) and four parts of coarse aggregate (gravel). b. Every square meter of a concrete gate uses 6. 0 m. long of reinforcement bar placed at an interval of 0. 25 m. both ways on center. This is equivalent to 1 ? bars at a standard length of 20 feet per bar. The floor and toes use the same size of bar, thus: No. of reinforcement bar = (Af + 4t) ? 1. 5 Where: Af = Area of the floor At = Area of the toes The walls, wings, etc. use two different sizes of reinforcement bar, thus: [pic] Where: Aw = Area of the walls Ax = Area of the wings An = other areas c. Find the total area of a concrete gate by adding all the areas mentioned in (a). Calculate the weight of tie wire no. 6 by multiplying the total area with a standard value per sq. m. of concrete, thus: Weight (kg) = AT ? 0. 3 Kg/sq. m. d. Calculate the volume of boulders needed by multiplying the area of the flooring with the th ickness of fill. e. Form lumber can be calculated by multiplying the area of walls, wings and bridges by 2. Plywood can also be used as form. Since lumber measurement is still in feet it should be converted into meter, (see conversion table). Use 2†³ ? 3†³ wood for form support. f. Bamboo puno could be calculated from the area of the flooring. A square meter of flooring will require more or less 20 puno staked at an interval of 0. 5 m. both ways on center. This, however, depends upon the hardness of the floor foundation. g. Screens and slabs are calculated based on the design of the concrete gate. h. Assorted nails are calculated based on the thickness of the form lumber used. i. Labor cost is 35–40% of total material cost. However, close estimates can be computed by determining the cost of labor for the construction and removal of temporary earth dike, excavation of the foundation, staking of bamboo puno, placing of boulders and gravel, construction of forms, concr eting of the gate and others. 2. Estimating the cost of construction and installation of a wooden gate. a. Based on the plan of a wooden gate, determine the size and number of lumber for the sidings and flooring. Compute for the total board feet using the following formula: [pic] Where: |L |= |Length of lumber in inches | |W |= |Width of lumber in inches | |t |= |thickness of lumber in inches | b. Based on the design and specification of the pillars and braces, compute for the total board feet using again the above formula. c. Determine the size and number of lumber needed for slabs and screen frames and compute the total board feet. d. Calculate the assorted nails (bronze) based on the lumber used. e. Calculate the coal tar requirement in gallons. f. Calculate the cost of nylon and bamboo screens. g. Calculate the labor cost at 30–40% of the material cost or calculate in detail according to the labor requirement. Calculation includes the construction, painting and installation of the wooden gate and excavation of the floor foundation. c. For the Construction of the Proposed Dikes. Dikes constructed in fishponds vary in sizes. Bigger dikes are, of course, more costly to construct than smaller dikes. In other words, the perimeter or main dike will expend more than the secondary or tertiary dikes. The cost of construction is calculated based on the volume of soil filled and generally it costs [pic]6. 00 per cubic meter. Labor cost, however, depends on the prevailing price in the locality. Transport distance of soil material to the dike is also considered in calculating the cost of construction. Long transport distance decreases individual output per day and thus will increase construction cost. Working eight hours a day, one skilled worker can finish diking, using one flat boat, based on the following distances: |10 – 100 meter distance |6 – 7 cu. m. /day | |101 – 300 meter distance |5 – 6 cu. m. day | |301 – 500 meter distance |4 – 5 cu. m. /day | d. For the Excavation and Leveling of Ponds. Cost for excavation depends upon the volume of soil left inside the pond after the dikes have been constructed. Considering that some soils have been excavated for diking purposes, only about 60% is left for excavation. Generally, escavation co sts about [pic]2. 00 per cu. m. depending upon the prevailing labor cost in the locality. After excavation, leveling of the pond bottoms follows. This involves the cut-and-fill method (excavation and dumping to low portions). Generally, leveling costs about [pic]2,000. 00 per hectare. e. For the Construction of Facilities. Facilities include the caretaker's house, working shed, bodega, chilling tanks, etc. For proper estimates there should be a simple plan of the facilities. However, rough estimates can be made based on the floor area of a house to be constructed. For a house made of light materials, assume a cost of [pic]400. 00 per sq. m. floor area; and for concrete structures, assume [pic]1,000. 00 per sq. m. All assumed costs include materials and labor based on 1979 price of materials. f. For the Purchase of Equipment. A fishpond project cannot be operated without equipment. Examples are fish nets, digging blades, shovels, scoop nets, bolos, etc. These items should be included as part of the total development cost. Such equipment should be listed and calculated. g. Contingencies. There should be a contingency fund for unforeseen expenditures, increase of prices and other materials not included in the above calculations. Assume 10% of the above costs for contingencies. 5. 1. 3 Cost estimate For the purpose of determining the cost of developing a new brackishwater fishfarm project, a typical example of a 50-hectare fishpond project applied to the Bureau of Fisheries and Aquatic Resources for a 25-year Fishpond Lease Agreement is presented below. |I. Pre-Development |   | | |1. |For the preparation of feasibility study |[pic]1,000. 00 | | |2. |Re-location of boundaries |2,000. 00 | | |3. |For the construction of temporary shelter for laborers (light materials) |4,000. 00 | | |4. |For the construction of flatboats, 5 units at [pic]500. 00/unit |2,500. 00 | | |5. |For the purchase of small banca, 1 unit at [pic]600. 00 |600. 00 | | |6. For representation and transportation expenses |3,000. 00 | | |Sub-total |[pic]13,100. 00 | |II. |Development Proper |   | | |1. |Clearing of the area at [pic]600. 00/ha. (cutting, chopping, burning & removal of logs |[pic]30,000. 00 | | |2. |Construction of dikes (filling, compacting and shaping by manual labor) |   | | | |a. |Main dike along bay and river 1,920 linear meters, 6. 0 m base, 2. 0 m crown and 2. 25 m|103,680. 00 | | | | |height or a total of 17,280 cum. at [pic]6. 00/cu. | | | | |b. |Main dike along upland, 840 linear meters, 5. 5 m base, 2. 0 m crown, and 2. 0 m height |37,800. 00 | | | | |or a total of 6,300 cu. m at [pic]6. 00/cu. m | | | | |c. |Main canal dike, 980 linear meters, 5. 0 m base, 2. 0 m crown, and 1. 8 m height, or a |33,957. 00 | | | | |total of 6,174 cu. m. at [pic]5. 50/cu. m | | | | |d. |Secondary dike, 2,540 linear meters, 4. 0 m base, 1. 0 m crown & 1. 5 m heig ht or a |52,387. 50 | | | | |total of 9,525 cu. at [pic]5. 50 per cu. m | | | | |e. |Secondary canal dike, 400 linear meters, 4. 0 m base, 1. 5 m crown and 1. 4 m height, or|8,470. 00 | | | | |a total of 1,540 cu. m at [pic]5. 50 per cu. m | | | | |f. |Tertiary canal dike, 240 linear meters, 3. 5 m base, 1. 5 m crown and 1. 2 m height or a|3,600. 00 | | | | |total of 720 cu. m at [pic]5. 00 per cu. m | | | | |g. |Tertiary dike, 700 linear meters, 3. 0 m base, 1. 0 m crown and 1. m height or a total|7,000. 00 | | | | |of 1,400 cu. m at [pic]5. 00 per cu. m | | | |3. |Construction and installation of gates |   | | | |a. |Main double opening concrete gate, 2 units at [pic]20,000/unit including labor cost |40,000. 00 | | | |b. |Construction and installation of 10 units secondary wooden gates at [pic]3,000. 00 per|30,000. 00 | | | | |unit | | | | |c. Construction and installation of 15 units tertiary wooden gates at [pic]1,500/unit |22,500. 00 | | |4. |Excavation and levelling of pond bottoms (cut-and-fill) |   | | | |a. |Nursery Pond, 1. 5 ha at [pic]2,000/hectare |3,000. 00 | | | |b. |Transition Pond, 4. 0 ha at [pic]2,000/ha |8,000. 00 | | | |c. |Formation Pond, 8. 0 ha at [pic]2,000/ha |16,000. 00 | | | |d. |Rearing Pond, 32. 0 ha at [pic]2,000/ha |64,000. 00 | | |5. Uprooting and removal of stumps at [pic]600/ha |30,000. 00 | | |6. |For the construction of facilities |   | | | |a. |Caretaker's Hut made of light materials, 2 units at [pic]6,000/unit |12,000. 00 | | | |b. |Bodega, made of light materials for inputs and equipment, 1 unit |5,000. 00 | | | |c. |Chilling tank with shed, made of light materials |3,000. 00 | | |7. |For the purchase of equipment |   | | | |a. Nets for harvesting |3,000. 00 | | | |b. |Digging blades and carpentry tools |1,000. 00 | | | |c. |Containers |2,000. 00 | | |8. |Contingencies (10% of cost) |52,350. 05 | | |Sub-total |[pic]562,750. 55 | | |T O T A L |[pic]575,850. 55 | ESTIMATED COST FOR ONE UNIT DOUBLE OPENING MAIN CONCRETE GATE |I. Cost of Materials | | |   | |Quantity |Unit Price |Amount | | |1. |Cement |140 bags |[pic]24. 00/bag |[pic]3,360. 00 | | |2. |Sand |10 cu. m. |60. 00/cu. m |600. 00 | | |3. |Gravel |20 cu. m |80. 00/cu. m |1,600. 00 | | |4. |Boulders |8 cu. m |50. 00/cu. m |400. 00 | | |5. Reinforcement Bar | | | |a) ? ? ? 20†² |80 pcs |22. 00/pc |1,760. 00 | | | |b) ? 3/8 ? 20†² |35 pcs |12. 00/pc |420. 00 | | |6. |Plywood form |49 pcs |48. 00/pc |2,352. 00 | | | |(? ? 4†² ? 8†³) | | | | | |7. |Lumber (S4S) | | | |a) 2†³ ? 2†³ ? 12†² |30 pcs |3. 0/bd. ft |360. 00 | | | |b) 2†³ ? 3†³ ? 12†² |16 pcs |3. 00/bd. ft |288. 00 | | | |c) 1†³ ? 2†³ ? 12†² |10 pcs |3. 00/bd. ft |60. 00 | | | |d) 1†³ ? 12†³ ? 12†² |6 pcs |3. 00/bd. ft |216. 00 | | |8. |Assorted Nails |10 kgs |7. 50/kg |75. 00 | | |9. |G. I. Wire #16 |20 kgs |8. 00/kg |160. 00 | | |10. Bamboo Puno |400 pcs |4. 00/pc |1,600. 00 | | |Sub-tot al |[pic]13,251. 00 | |II. |Labor (40% of material cost) |5,300. 00 | |III. |Contingencies (10% of material cost) |1,325. 00 | | |T O T A L |[pic]19,876. 00 | | |say |[pic]20,000. 00 | ESTIMATED COST FOR ONE UNIT SECONDARY WOODEN GATE |I. Cost of Materials | | |   |   |Description |Quantity |Unit Price |Amount | | |1. |Ply Board |1†³? 10†³? 14†² |34 pcs. |[pic]3. 00/bd. ft|[pic]1,190. 00| | | | | | |. | | | | | |1†³? 10†³? 8†² |3 pcs. |3. 00/bd. ft. |60. 00 | | |2. |Slabs |1†³? 12†³? 14†² |2 pcs. |3. 00/bd. ft. |84. 00 | | |3. |Pillars and   Braces |2†³? 3†³? 10†² |4 pcs. 3. 00/bd. ft. |60. 00 | | | | |2†³? 3†³? 8†² |7 pcs. |3. 00/bd. ft. |84. 00 | | | | |2†³? 3†³? 14†² |2 pcs. |3. 00/bd. ft. |42. 00 | | | | |3†³? 4†³? 10†² |12 pcs. |3. 00/bd. ft. |360. 00 | | |4. |Screen Frames |2†³? 3†³? 16†² |2 pcs. |3. 00/bd. ft. |48. 00

Finding Trustworthy Sources

Any time you are asked to write a research paper, your teacher will require a certain amount of credible sources. A credible source means any book, article, image, or other item  that accurately and factually supports the argument of your research paper. It is important to use these kinds of sources in order to convince your audience that you have put in the time and effort to really learn and understand your topic, so they can trust what you say.   Why Be Skeptical of Internet Sources? The internet is full of information. Unfortunately, it is not always useful or accurate information, which means some sites are very bad sources. You have to be very careful about the information you use when making your case. Writing a political science paper and citing The Onion, a satirical site,  would not get you a very good grade, for example. Sometimes you may find a blog post or news article that says exactly what you need to support a thesis, but the information is only good if it comes from a trusted, professional source.   Keep in mind that anyone can post information on the web. Wikipedia is a prime example. Although it may sound really professional, anyone can edit the information. However, it can be helpful in that it often lists its own bibliography and sources. Many of the sources referenced in the article come from scholarly journals or texts. You can use these to find real sources that your teacher will accept. Types of Research Sources The best sources come from books and peer reviewed journals and articles. Books that you find in your library or bookstore are good sources because they have usually already gone through the vetting process. Biographies, text books, and academic journals are all safe bets when researching your topic. You can even find a lot of books digitally online.   Articles can be a little trickier to discern. Your teacher will probably tell you to use peer reviewed articles. A peer reviewed article is one that has been reviewed by experts in the field or subject the article is about. They check to make sure that the author has presented accurate and quality information. The easiest way to find these types of articles is to identify and utilize academic journals.   Academic journals are great because their purpose is to educate and enlighten, not make money. The articles are almost always peer-reviewed. A peer-reviewed article is kind of like what your teacher does when he or she grades your paper. Authors submit their work and a board of experts review their writing and research to determine whether or not it is accurate and informative.   How to Identify a Credible Source If you want to use a website, make sure it is up to date with an easily identifiable author. Websites that end in .edu or .gov are usually pretty trustworthy.  Make sure the information is the most recent information available. You may find a good article from the 1950’s, but there are probably more contemporary articles that either expand upon or even discredit research that old.  Familiarize yourself with the author. If they are an expert in their field, it should be easy to find information on their education and determine their role in the field of study they are writing about. Sometimes you start seeing the same names pop up on various articles or books.  Ã‚   Things to Avoid Social media. This can be anything from Facebook to blogs. You might find a news article shared by one of your friends and think it is credible, but chances are it is not.  Using material that is out of date. You don’t want to base an argument around information that has been debunked or is considered incomplete.Using a second hand quote. If you find a quote in a book, be sure to cite the original author and source and not the author using the quote.  Using any information that has obvious bias. Some journals publish for profit or has their research funded by a group with special interest in finding certain results. These can look really trustworthy, so be sure to understand where your information is coming from. Students often struggle with how to use their sources, especially if the  teacher requires several. When you start writing, you may think you know everything you want to say. So how do you incorporate outside sources? The first step is to do a lot of research! A lot of times, the things you find may change or refine your thesis. It can even help you if you have a general idea, but need help focusing on a strong argument. Once you have a well-defined and thoroughly researched thesis topic, you should identify the information that will support the claims you make in your paper. Depending on the subject, this could include: graphs, statistics, images, quotes, or just references to information you’ve gathered in your studies.   Another important part of using the material you have gathered is citing the source. This can mean including the author and/or source within the paper as well as listed within a bibliography. You never want to make the mistake of plagiarism, which can happen accidentally if you don’t cite your sources properly!   If you need help understanding the different ways to site information, or how to build your bibliography, the Owl Perdue Online Writing Lab can be a huge help. Within the site you will find the rules for properly citing different kinds of material, formatting quotes, sample bibliographies, just about anything you need when it comes to figuring out how to write and properly structure your paper.   Tips on How to Find Sources Start at your school or local library. These institutions are designed to help you find everything you need. If you can’t find what you need in your local library, many work as a system that allows you to look for a specific book and have it delivered to your library.  Once you find a few sources you like, check their sources! This is where bibliographies come in handy. Most of the sources you will use will have sources of their own. In addition to finding more information, you will become familiar with the leading experts in your subject.  Scholarly databases are a huge help in researching a paper. They cover a broad range of subjects from writers of all disciplines.Ask your teacher for help. If your teacher has assigned a paper, chances are they know a little bit about the material. There is a lot of information available to you through books and the internet. Sometimes it may seem overwhelming and you just don’t know where to start. Your teacher can help get you started and tell you the best places to look based on your subject. Places to Start Looking JSTORMicrosoft Academic SearchGoogle ScholarRefseekEBSCOScience.govNational Science Digital LibraryERICGENISISGoPubMedIndex CopernicusPhilPapersProject MuseQuestia