ESTIMATION OF SHRIMP POPULATIONS IN EXPERIMENTAL PONDS USING MARK-RECAPTURE AND STRATIFIED RANDOM SAMPLING METHODS

2009 ◽  
Vol 11 (1-4) ◽  
pp. 142-150 ◽  
Author(s):  
David L. Hutchins ◽  
George W. Chamberlain ◽  
Jack C. Parker
2018 ◽  
Vol 13 (2) ◽  
pp. 62
Author(s):  
Muhamad Thahir Haning ◽  
Hasniati ◽  
Mashuri H. Tahili

<p>Artikel ini bertujuan untuk menganalisis dan menginterpretasi pengaruh model kepercayaan publik terhadap kepatuhan wajib pajak di Provinsi Sulawesi Selatan. Pendekatan penelitian menggunakan analisis kuantitatif dengan metode survey di tiga area Kantor Pelayanan Pajak yaitu Makassar Selatan, Maros, dan Palopo. Populasi dalam penelitian ini adalah wajib pajak  yang telah teregistrasi sebagai wajib pajak, baik pajak orang pribadi dan pajak badan sebanyak 2400 orang. Sampel penelitian menggunakan multistage cluster sampling methods untuk memastikan keterwakilan populasi. Penarikan sampel menggunakan metode stratified random sampling terhadap tiga area penelitian. Rumus Slovin digunakan untuk menetapkan jumlah sampel  sebesar 20% dengan pertimbangan karena populasi yang relatif besar dimana persentase kelonggaran ketelitian kesalahan pengambilan sampel yang masih  bisa ditolerir sebesar α=0,05. Dengan dasar tersebut, maka sampel dalam penelitian ditetapkan sebanyak 400 responden. Teknik analisis data menggunakan teknik analisis kuantitatif dengan menggunakan persamaan model struktural. Hasil penelitian ini menunjukkan bahwa kepercayaan publik berpengaruh positif dan signifikan terhadap kepatuhan wajib  pajak. Kepercayaan publik berpengaruh positif dan signifikan terhadap kepatuhan wajib pajak melalui kinerja pelayanan pajak. Variabel kinerja pelayanan pajak berpengaruh positif dan signifikan terhadap kepatuhan wajib pajak. Faktor pemerintah, faktor resiko, dan faktor kontekstual berpengaruh positif dan signifikan terhadap kepercayaan publik dalam meningkatkan kepatuhan wajib pajak di Provinsi Sulawesi Selatan. </p><p><strong>Kata kunci : Kepercayaan publik, kinerja pelayanan pajak, kepatuhan wajib pajak</strong></p>


Author(s):  
Moslem Basti ◽  
Farzan Madadizadeh

Background: Sampling methods are one of the main components of each research. Familiarity with a variety of sampling methods is essential for researchers. Objective: The main purpose of this study was to teach different probabilistic and non-probabilistic sampling methods to improve the knowledge of researchers in conducting more accurate research. Methods: In this tutorial article, useful information about each sampling method, as well as how to properly use each method and its strengths and weaknesses are provided. Results: Five cases of probabilistic sampling methods and four cases of non-probabilistic sampling methods that are common are mentioned. Probabilistic sampling included simple random sampling, stratified random sampling, cluster sampling, systematic random sampling, and multi-stage random sampling. In addition to introducing each method, its strengths and weaknesses are also mentioned. Conclusion: Probabilistic sampling methods despite limiting assumptions provide more reliable results. Therefore, if it is possible, researchers should use probabilistic sampling methods to increase the accuracy of the study.


1990 ◽  
Vol 20 (11) ◽  
pp. 1704-1713 ◽  
Author(s):  
R. A. Fleming ◽  
P. de Groot ◽  
A. Obarymskyj ◽  
T. Burns

Open-grown jack pine (Pinusbanksiana Lamb.) in northern Ontario, ranging in age from 9–20 years, bore an average of 311 receptive seed cones, with the greatest number in the upper midcrown. Generally, counts of receptive seed cones varied more among trees than among directions; most of the variation among trees occurred in the mid to upper crown. The expression F(H) = Hb+1[b + 2 − (b + 1)H], with b = 3.12 (P < 0.001, R2 = 0.94), described the cumulative proportion of receptive seed cones occurring up to relative crown height, H. Significant directional differences in the parameter estimates for b showed that the open-grown jack pines initiated seed cones at slightly lower heights on the south side than on the other sides. For monitoring the crop, a procedure for randomly selecting receptive seed cones with respect to their vertical distribution in the crown was developed. The construction of simple, cost-effective sampling plans for estimating yields of receptive seed cones in jack pine seed orchards is explained. This involves determining the cost of conducting the sampling necessary to achieve a desired precision of estimation. It also involves determining the precision attainable with limited resources to conduct the sampling. With this focus, simple random sampling and two types of stratified random sampling were compared. Stratified random sampling based on relative crown height with equal stratum widths was cost-effective and should be relatively easy to implement operationally.


At-Tuhfah ◽  
2018 ◽  
Vol 6 (1) ◽  
pp. 99-115
Author(s):  
Roudlotun Ni'mah

“This study aims to determine the relathionship between empathy with altruistic behavior. Subjects were students in Al-asy’ari boarding school totaling 90 student for male sex between the age of 12 to 25 years. Meansuring intruments used are altruistic behavior scale and empathy scale. The data capture techniques using proportionate stratified random sampling. Methods of data analysis using regression analisysis with SPSS16.0 program. The resulst showed positive significant relationship between empathy and altruistic behavior. Effective contribution of empathy to altruistic behavior for students in Al-asy’ari boarding school is 44% indicated by the coefficient of determinant (R2) 44,0. This means there is 66,4% of other variables that affect students’ altruistic behavior.”


Author(s):  
Yuliana Citra ◽  
Lukman Yunus ◽  
Muhammad Aswar Limi

This study aims to determine the differences in farming income for the cropping system of the patchouli cacao intercropping system and the cocoa monoculture system in the Puduria Jaya Village Buke Sub District South Konawe District. This research was conducted in Puduria Jaya Village Buke Sub District, South Konawe District in 2019. The determination of research respondents was carried out by proportional stratified random sampling. Methods of data analysis using income analysis and t-test. The results showed that the average income of patchouli intercropping farmers was IDR 16,172,200 / ha and the income of cocoa monoculture farmers was IDR 3,904,783 / ha. The income of patchouli cocoa intercropping farmers and cocoa monocultures shows a significant difference where the income of patchouli cacao intercropping patterns is greater than that of cocoa monocultures.


2018 ◽  
Vol 1 (2) ◽  
pp. 109-117
Author(s):  
Suratmi Suratmi ◽  
Suwardi Suwardi

Three domains nurse competention have been identified as cognitif, affective and psichomotor. One of the methods for improving nurse competention in hospital is by using inhouse training conventional or distance learning (e-learning) methods. The aim of this study were to determine the efficacy of nurse e-learning based on web for supporting inhouse training to improve competention of nurse Muhammadiyah Lamongan Hospital. This pre-experimental study using one group preposttest design and sampling methods using proportionate stratified random sampling. 31 responden were selected as on experiment. Duration of intervention is 1 week. The data were take by application based on web. This study showed improvement efficacy of nurse e-learning based on web for supporting inhouse training to improve competention of nurse in Muhammadiyah Lamongan Hospital. Level of significance (p)=0,00<α(0.05). Efficacy level at moderate-high, index gain value 0,6. Due to the result of this study, e-learning based on web can be used for supporting inhouse training, to improve competention of nurse in Muhammadiyah Lamongan Hospital.


2020 ◽  
Vol 5 (1) ◽  
pp. 40
Author(s):  
DANANG KUSNANTO ◽  
RISKA AYU OKTAVIANY ◽  
RIDA RAHMA

<p><em>As for the purpose, to obtain empirical evidence and find clarity phenomena and conclusions about The Effect  of Trust and E-Service Quality to Buying Decision in Online Shop Shopee at Economy and Business Faculty University of Singaperbangsa Karawang. The study was conducted by using desciptive and verification methods, such as collecting, presenting, analyzing, and testing hypothesis, and made conclusions and suggestions. Sample were collected by using Stratified Random Sampling and Purposive sampling methods with a sample od 100 respondensfrom a population of 3.597 people. The data analysis technique was used Bar Scale Analysis technique and Path Analysis by using Method Succesive Interval, Microsoft Office Excel 2010, and SPSS. Based on the research result trust variable (X1) has a significant effect of buying decision (Y) with a percentage of 53,1%, which means that further increasing trust consumer will increase buying decisions to the product offered. E-service qualiy (X2) has a significant effect on buying decision (Y) with a persentage of 15,1%, which means that e-service quality effect the rentention of customers. There is a simultaneous effect of trust and e-service quality variables on buying decision by 68,2% and the remaining 31,8% is influenced by other variables not examined in this study.</em></p><p><em><br /></em></p><p><em></em><strong><em>Keywords: </em></strong><em>Trust, E-Service Quality, Buying Decision</em></p>


2018 ◽  
Vol 1 (2) ◽  
pp. 109-117
Author(s):  
Suratmi Suratmi ◽  
Suwardi Suwardi

Three domains nurse competention have been identified as cognitif, affective and psichomotor.  One of the methods for improving nurse competention in hospital is by using inhouse training conventional or distance learning (e-learning) methods. The aim of this study were to determine the efficacy of nurse e-learning based on web for supporting inhouse training to improve competention of nurse Muhammadiyah Lamongan Hospital. This pre-experimental study using one group preposttest design and sampling methods using proportionate stratified random sampling. 31 responden were selected as on experiment. Duration of intervention is 1 week. The data were take by application based on web. This study showed improvement efficacy of nurse e-learning based on web for supporting inhouse training to improve competention of nurse in Muhammadiyah Lamongan Hospital. Level of significance (p)=0,00<α(0.05). Efficacy level at moderate-high, index gain value 0,6. Due to the result of this study, e-learning based on web can be used for supporting inhouse training, to improve competention of nurse in Muhammadiyah Lamongan Hospital.


Author(s):  
Evi Mariana

The purpose of this study was to analyze the factors that influence the decisionof the students chose to study in Obstetrics Prodi STIKES Muhammadiyah Ciamis and analyze the factors that most influence the decision of the students chose to study in Obstetrics Prodi STIKES Muhammadiyah Ciamis. Collecting data in this study was conducted using a survey by questionnaire to 114 students by stratified random sampling method. Methods of data analysis using multiple linear regression, F test and test T. The result is a marketing mix that significantly is the product, place, and physical evidence. And that does not affect the marketing mix is price, promotion, place, and processes


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