scholarly journals Training Set Construction for Genomic Prediction in Auto-Tetraploids: An Example in Potato

2021 ◽  
Vol 12 ◽  
Author(s):  
Stefan Wilson ◽  
Marcos Malosetti ◽  
Chris Maliepaard ◽  
Han A. Mulder ◽  
Richard G. F. Visser ◽  
...  
Keyword(s):  
Genetic Distance ◽  
Genomic Prediction ◽  
Random Sampling ◽  
Sampling Method ◽  
Distance Sampling ◽  
Simple Random Sampling ◽  
Coefficient Of Determination ◽  
Stratified Random Sampling ◽  
Training Set ◽  
The Impact

Training set construction is an important prerequisite to Genomic Prediction (GP), and while this has been studied in diploids, polyploids have not received the same attention. Polyploidy is a common feature in many crop plants, like for example banana and blueberry, but also potato which is the third most important crop in the world in terms of food consumption, after rice and wheat. The aim of this study was to investigate the impact of different training set construction methods using a publicly available diversity panel of tetraploid potatoes. Four methods of training set construction were compared: simple random sampling, stratified random sampling, genetic distance sampling and sampling based on the coefficient of determination (CDmean). For stratified random sampling, population structure analyses were carried out in order to define sub-populations, but since sub-populations accounted for only 16.6% of genetic variation, there were negligible differences between stratified and simple random sampling. For genetic distance sampling, four genetic distance measures were compared and though they performed similarly, Euclidean distance was the most consistent. In the majority of cases the CDmean method was the best sampling method, and compared to simple random sampling gave improvements of 4–14% in cross-validation scenarios, and 2–8% in scenarios with an independent test set, while genetic distance sampling gave improvements of 5.5–10.5% and 0.4–4.5%. No interaction was found between sampling method and the statistical model for the traits analyzed.

scholarly journals PENGARUH PENGGUNAAN GADGET DENGAN PRESTASI BELAJAR PADA SISWA/SISWI SMAN 2 TEMBILAHAN

2019 ◽  
Vol 5 (3) ◽  
pp. 157
Author(s):  
Haryati Astuti
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Adverse Impact ◽  
The Internet ◽  
Stratified Random Sampling ◽  
Cross Sectional ◽  
Learning Achievement ◽  
Additional Information ◽  
The World ◽  
The Impact

Gadget are phones that have capabilities such as computers, usually have large screens and the operating system is capable of carrying out common applications. Throughout the world there are 76.9 billion gadget usage and will continue to increase. The impact of the use of gadget can have an adverse impact on adolescents, it is known that the mass media or in this case the internet has a big impact on behavior change, such as playing games, watching porn videos and having unlimited relationships with girlfriends. The purpose of this study was to find out the description of the use of gadgets with the learning achievement of students of SMAN 2 Tembilahan in 2018. This research is descriptive with a cross sectional approach. The population in this study were all students of class XI and XII, with the sampling method carried out in proportionate stratified random sampling, as many as 117 samples, carried out on 28 Agustus 2018. The results of this study that use the majority of gadgets have a majority of unfavorable learning achievement as many as 41 people (56.2%) and the negative using the majority gadget also has a bad learning achievement of 52 people (71.2%). It is hoped that this research will be used as a reference for schools on the impact of gadget use, so that this research can later be used by students to improve learning achievement, and can provide additional information for further researchers by replacing or adding existing variables related to the description of gadget usage, learning in adolescents.

scholarly journals Pengaruh Service Scape dan Brand Image Terhadap Kepuasan Konsumen di SK Coffee Lab Kota Kediri

2020 ◽  
Vol 5 (1) ◽  
pp. 1
Author(s):  
Djunaidi Djunaidi ◽  
Heri Subagyo
Keyword(s):  
Analytical Methods ◽  
Random Sampling ◽  
Consumer Satisfaction ◽  
Sampling Method ◽  
Brand Image ◽  
Simple Random Sampling ◽  
Field Studies ◽  
Coefficient Of Determination ◽  
Validity And Reliability ◽  
Coffee Shops

This study aims to determine the effect of servicescape and brand image on Consumer Satisfaction in SK Coffee Lab. Kediri City. The reason for this research is because there are more and more coffee shops offering product variants, both local and outside coffee, bearing in mind that coffee is currently popular with all people, young and old. The population in this study is not known with certainty so that a sample of 100 respondents was taken with a simple random sampling method. In collecting data used questionnaires, literature and field studies. The analytical methods used in data processing include the validity and reliability of the questionnaire, hypothesis testing and the coefficient of determination. From the results of testing all hypotheses are accepted. The coefficient of determination is quite high and the value of the influence of a brand image that is higher than servicescape on consumer satisfaction proves that the better the brand image of the place, the higher the customer satisfaction.Penelitian ini bertujuan untuk mengetahui pengaruh servicescape dan brand image terhadap Kepuasan Konsumen di SK Coffee Lab. Kota Kediri. Alasan penelitian ini dilakukan karena semakin banyak dan marak tempat kopi yang menawarkan varian produk baik kopi lokal maupun luar daerah mengingat saat ini kopi digemari oleh seluruh kalangan baik tua maupun muda. Populasi dalam penelitian ini tidak diketahui secara pasti sehingga diambil sampel sebanyak 100 responden dengan metode simple random sampling. Dalam mengumpulkan data digunakan kuesioner, studi pustaka dan lapangan. Metode analisis yang digunakan dalam pengolahan data meliputi validitas dan reliabilitas kuesioner, uji hipotesis serta koefisien determinasi. Dari hasil pengujian seluruh hipotesis diterima. Nilai koefisien determinasi yang cukup tinggi serta nilai pengaruh brand image yang lebih tinggi daripada servicescape terhadap kepuasan konsumen membuktikan bahwa semakin baik brand image tempat tersebut, semakin tinggi pula kepuasan konsumen.  

A beginner's Guide to Sampling Methods in Medical Research

2021 ◽  
Author(s):  
Moslem Basti ◽  
Farzan Madadizadeh
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Sampling Methods ◽  
Simple Random Sampling ◽  
Cluster Sampling ◽  
Stratified Random Sampling ◽  
Systematic Random Sampling ◽  
Probabilistic Sampling ◽  
Multi Stage ◽  
Main Components

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.

scholarly journals DAMPAK KEANGGOTAAN KELOMPOK LUMBUNG PANGAN MASYARAKAT TERHADAP PENDAPATAN USAHATANI PADI DI KABUPATEN TAKALAR

Agric ◽  
2017 ◽  
Vol 29 (1) ◽  
pp. 69
Author(s):  
Muh Tahir ◽  
Sri Murdiyati ◽  
Sitti Arwati
Keyword(s):  
Data Analysis ◽  
Random Sampling ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Total Sample ◽  
T Test ◽  
Land Area ◽  
Income Levels ◽  
South Sulawesi ◽  
The Impact

<span class="fontstyle0">This study aims to analyze the income of paddy farming in members and non-members of the community granary group, and to know the impact of the membership of the granary group on the income of paddy farming. This research was conducted in Bontoloe Village, Galesong Sub District, Takalar District, South Sulawesi Province. Sampling was done by two methods, first for sample of granary member using purposive sampling method, second fornon-member of granary using simple random sampling method. So the total sample in this study were 34 farmers. Data analysis used is the analysis of different test (t test) and multiple linear regression. The results showed that the income earned by farmer members of the granary group amounted to Rp 9,386,227.00, while the income earned by non-member farmers in the granary group was Rp 9,175,144.00. Differences in paddy production, revenue, and income levels between member farmers and non-members of the granary group based on t test proved not significantly different. Factors that significantly affect the income level of paddy farming are land area, paddy seed price, pesticide price, and labor wage. While the impact of membership of community granary group was not significant to the income of paddy farming. But simultaneously (land area, price of paddy seed, price of urea fertilizer, phonska fertilizer price, pesticide price, labor wage, dummy member) can affect paddy farming income of 84.99%.</span>

Young Farmers' Motivation and Participation in Horticultural Organic Farming in Yogyakarta, Indonesia

2020 ◽  
Vol 11 (1) ◽  
pp. 45-58
Author(s):  
Sunarru Samsi Hariadi ◽  
Diah Fitria Widhiningsih
Keyword(s):  
Organic Farming ◽  
Agricultural Policy ◽  
Random Sampling ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Agricultural Extension ◽  
Psychological Characteristics ◽  
The Impact ◽  
Local Leaders

This research aims at analyzing how to further young farmers' motivation and participation and the impact of influencing factors of relevance. Prominent among the goals of this research is to enhance youth psychological characteristics so as to arrange the best strategy to promote horticultural organic farming. Eighty young farmers were selected by means of simple random sampling method. Path analysis was employed to decide the fit model. It was found that agricultural extension workers changed young farmers' motivations and that they had an impact on participation by enhancing perception. The role of agricultural extension workers should be improved; and they should help control the communication between local leaders and farmers. Hopefully, this research can be used as the basis of agricultural policy in developing countries.

scholarly journals Minat Berwirausaha Dampak Efikasi Diri, Motivasi dan Lokus Kendali Pada Mahasiswa

2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Andy Putra Pratama ◽  
Maria Widyastuti
Keyword(s):  
Locus Of Control ◽  
Human Resources ◽  
Random Sampling ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Doing Business ◽  
The World ◽  
Control Locus ◽  
The Impact ◽  
The City

Higher education in a place of final educationwhich has an important role in creating human resources who are able to compete in the world of work. Business development that is done by students is growing, especiallyin the city of Surabaya. Tecresearch of population was Surabaya students the samples were determinated using the simple random sampling method. Data were collected by means of a questionnaire to 75 responden. The purpose of the  research is to determine the interest in doing business is the impact of Self – Efficacy, Motivation and locus of control. The results of study show that interest in doing business is a significant impact of self-ethification, this can be seen from t count3.801>t table 1.99394 and a significant value of 0.00< 0.05 and from the control locus it can be seen from t count -3.081>-1.99394 and the significant value is 0.003<0.05, while motivation has no impacton the interest in doing business, it can  be seen from the t count 1.565< t table 1.99394 and the significant value 0.112 > 0.05. So it can be concluded that interest in trying to impact to impact from of self-ethics and locus of control  

scholarly journals The Impact of Strategic Fit on the Marketing Performance of the Industrial Corporations in Jordan

2019 ◽  
Vol 14 (2) ◽  
pp. 115
Author(s):  
Tareq N. Hashem ◽  
Ahmad Ismaiel Al maani
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Response Rate ◽  
Positive Impact ◽  
Stock Exchange ◽  
Simple Random Sampling ◽  
Strategic Fit ◽  
Marketing Performance ◽  
Amman Stock Exchange ◽  
The Impact

The present study aimed at identifying the impact of strategic fit on the marketing performance of the industrial corporations in Jordan. The population consists from all the Jordanian industrial corporations that are listed on Amman Stock Exchange. To be specific, the population consists from 63 companies. A sample was chosen through using the simple random sampling method. It was selected from 54 companies. Questionnaire forms were distributed to marketing, and administrative directors (or the ones holding equivalent positions).&nbsp; 76 questionnaire forms were retrieved (out of 108 questionnaires). All of the retrieved forms are valid for statistical analysis. The response rate is 70.37%. The latter rate is considered a good rate. Several results were concluded. For instance, it was found that the strategic fit has a statistically significant positive impact on the marketing performance of the Jordanian industrial corporations. The researchers recommend providing more attention to the achievement of strategic fit in the industrial corporations. That shall enable those companies to improve their marketing performance.

scholarly journals Board Governance, Business Ethics, and Firm Social Responsibility Disclosure

2020 ◽  
Vol 3 (4) ◽  
Author(s):  
Lauw Tjun Tjun ◽  
◽  
Regina Jansen Arsjah
Keyword(s):  
Business Ethics ◽  
Social Responsibility ◽  
Regression Model ◽  
Random Sampling ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Positive Influence ◽  
Board Governance ◽  
Manufacturing Companies ◽  
The Impact

This paper wants to investigate the impact of board control on social responsibility disclosure. The duration of this study covers three years, i.e., from 2014 until 2016. The population is from public manufacturing companies in Indonesia, and the samples are taken by a simple random sampling method. To analyze the data, the regression model gets used. This research concludes that a positive influence of the supervising board size and the woman portion in this board on the firm social responsibility disclosure is available. Also, business ethics positively affect it.

scholarly journals Analisis Produksi Salak di Desa Wonokerto, Kecamatan Turi, Kabupaten Sleman, Provinsi Daerah Istimewa Yogyakarta

2020 ◽  
Vol 9 (2) ◽  
pp. 77-88
Author(s):  
Suripto Suripto ◽  
Rifka Nur Syabrina Putri
Keyword(s):  
Production Function ◽  
Random Sampling ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Coefficient Of Determination ◽  
Land Area ◽  
Independent Variables ◽  
Variable Production ◽  
Douglas Production Function

This study aims to analyze how big the influence of labor, manure, land area, price, experience to the amount of salak production in Wonokerto Village Turi District Sleman District. Determination of respondents using a simple random sampling method (Simple Random Sampling). Analyzer used is an analysis of the Cobb-Douglas production function. The result of the investigation shows the value of the coefficient of determination (R2) of 0.5342 can be interpreted variable production amount 53.42% in by independent variables studied influenced research, while the rest controlled by other factors. Result of F test of labor variable (X1), manure (X2), land area (X3), price (X4), and experience (X5) simultaneously have a positive and significant effect on the amount of salak production in Wonokerto Village. Furthermore, variable of labor, manure, land area has a real impact on production amount in Wonokerto Village. In contrast, price and experience variables have no significant effect on the amount of salak production.

scholarly journals Impact of value chain activities on value addition in paddy farming in Nepal

2020 ◽  
Vol 23 (1) ◽  
pp. 9-20
Author(s):  
Kapil Khanal
Keyword(s):  
Value Chain ◽  
Significant Relationship ◽  
Random Sampling ◽  
Quantitative Method ◽  
Sampling Method ◽  
Research Study ◽  
Simple Random Sampling ◽  
Value Addition ◽  
Study Population ◽  
The Impact

Objective: The objective of this research is to measure the impact of processing activities on value addition in paddy farming in Bagmati zone. Methods and Materials: For the efficient completion of the research, samples of 400 farmers were taken from four districts of Bagmati Zone: Kathmandu, Bhaktapur, Lalitpur and Kavrepalanchowk respectively. Simple random sampling method was used where every element of the study population had equal and non zero chance of being selected as a sample of the study. The research study is completed using a blend of descriptive and causal research design. Quantitative method is used in the research where the questionnaires are close ended with fixed options. Results and Conclusion: It is found that there was positive significant relationship between the method of farming, storing and hulling on value addition in paddy whereas there was no significant relationship between the harvesting and value addition in paddy.

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