scholarly journals SAMPLING METHODS AND NUMBER OF ROUNDWOODS FOR DETERMINING THE MOISTURE CONTENT

2018 ◽  
Vol 42 (4) ◽  
Author(s):  
Danilo Barros Donato ◽  
Renato Vinícius Oliveira Castro ◽  
Angélica de Cássia Oliveira Carneiro ◽  
Ana Márcia Macedo Ladeira Carvalho ◽  
Benedito Rocha Vital ◽  
...  
Keyword(s):  
Moisture Content ◽  
Random Sampling ◽  
Sampling Method ◽  
Optimal Allocation ◽  
Sampling Methods ◽  
Simple Random Sampling ◽  
Optimum Number ◽  
Average Standard Deviation ◽  
Proportional Allocation ◽  
Allowable Error

ABSTRACT This study had the objective of comparing two methodologies of sampling, Simple Random Sampling (ACS) and Stratified Random Sampling (ACE) to determine the optimum number of roundwood samples to obtain the moisture content of the population. In order to achieve this goal, different percentages of allowable error (5,10,15 and 20%) were considered for each sampling methodology. In the conduction of this study, the samples were randomly taken from a lot of 250 steres of wood, 144 roundwood of three meters of length and distributed in four classes of diameter. Later, the moisture content of these samples was determined. And, from these values, the population estimates (average, standard deviation, variance, coefficient of variation, and standard error) by ACS and ACE methods, helped to determine the optimum number of roundwood (n) to be sampled from different percentages of allowable error adopted in this study at 95% probability. According to the results, the amount of roundwood to be sampled from ACS for each allowable error 5, 10, 15 and 20% was respectively 214, 55, 25 and 14. For the ACE (proportional allocation) the amount of roundwood was 141, 35, 16 and 9 for ACE (optimal allocation) this number was 136, 34, 15 and 8. It was concluded that the most indicated sampling method for this study, considering the allowable error, was the ACE method.

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 Magnitude and Reasons for Harmful Traditional Practices among Children Less Than 5 Years of Age in Axum Town, North Ethiopia, 2013

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Kahsu Gebrekirstos ◽  
Atsede Fantahun ◽  
Gerezgiher Buruh
Keyword(s):  
Random Sampling ◽  
Formal Education ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Cross Sectional Study ◽  
Traditional Practices ◽  
Traditional Practice ◽  
Cross Sectional ◽  
Proportional Allocation ◽  
Harmful Traditional Practices

Background.In addition to beneficial traditional practices, there are around 140 harmful traditional practices affecting mothers and children in almost all ethnic groups of Ethiopia. Therefore this study might give a clue about their practice and associated factors. The objective of this study was to assess magnitude of harmful traditional practices among children less than 5 years of age in Axum Town, North Ethiopia.Methods.Community based cross-sectional study was conducted on 752 participants who were selected using multistage sampling. Simple random sampling method was used to select ketenas from all kebelles of Axum Town. After proportional allocation of sample size to eachketena, systematic random sampling method was used to get the study participants. Data was collected using interviewer administered questionnaire; it was entered and analyzed using SPSS version 16 and descriptive statistics was calculated.Results.Majority of the respondents (81.2%) were Orthodox, 78.2% of the mothers had no work, and majority of mothers had no formal education. Among the harmful traditional practices performed on children, uvula cutting alone was performed on 72.8% of children followed by milk teeth extraction and uvula cutting with eyebrow incision.Conclusion.The leading harmful traditional practice performed on children in this study was uvula cutting.

scholarly journals ESTUDIO DE LA OFERTA DE PRECIOS HOTELEROS ANTICIPADA A TRAVÉS DE UN IMPORTANTE CANAL DE DISTRIBUCIÓN ONLINE

2020 ◽  
pp. 145-162
Author(s):  
Gloria Sánchez-Lozano ◽  
Luis Nobre Pereira ◽  
Esther Chávez-Miranda
Keyword(s):  
Big Data ◽  
Random Sampling ◽  
Sampling Method ◽  
Distribution Channel ◽  
Simple Random Sampling ◽  
Tourism Destination ◽  
Proportional Allocation ◽  
Operational Management

Este trabajo se centra en el estudio de la oferta de precios a través de canales online (Booking.com) en un destino turístico. Los hoteles se han seleccionado mediante muestreo aleatorio simple estratificado con afijación proporcional. Se trabaja con un conjunto de datos de grandes dimensiones (big data, con un total de 1.353.751 registros). Se considera una antelación de estancia de aproximadamente un año, lo que supone una gran novedad respecto a estudios previos. En el trabajo se presentan los valores de precios considerando los datos habitualmente publicados por los hoteles en estos canales, lo que permite ofrecer una panorámica de la operativa relativa a la oferta de precios a través de la distribución online a nivel de destino turístico. This work focuses on the study of prices offered through an online distribution channel (Booking.com) on a concrete tourism destination. Hotels were selected by a stratified simple random sampling method with proportional allocation. Research is done over an extensive dataset (1,353,751 of records, big data). The advance booking period considered covers approximately a whole year, and this represents a great novelty with respect to previous studies. Average prices are calculated from the values ordinarily published by hotels on this type of channels, which allows providing the outline of the operational management of prices implemented on the destination, through the online distribution and from the supply perspective.

scholarly journals Median Double Ranked Set Sampling Method

2018 ◽  
Vol 14 (1) ◽  
pp. 7503-7512
Author(s):  
Nuran Medhat Al-Mawan ◽  
El-Houssainy Rady ◽  
Nasr Rashwan
Keyword(s):  
Random Sampling ◽  
Traditional Method ◽  
Sampling Method ◽  
Sampling Methods ◽  
Cost Effective ◽  
Simple Random Sampling ◽  
Ranked Set Sampling ◽  
Median Ranked Set Sampling ◽  
Observational Economy ◽  
The Mean

In environmental monitoring and assessment, the main focus is to achieve observational economy and to collect data with unbiased, efficient and cost-effective sampling methods. Ranked set sampling (RSS) is one traditional method that is mostly used for accomplishing observational economy. In this article, we suggested new sampling method called median double ranked set sampling (MDRSS). The newly suggested sampling method MDRSS is compare to the simple random sampling (SRS), RSS, double ranked set sampling (DRSS), median ranked set sampling (MRSS). When the underlying distributions are symmetric and asymmetric, it is shown that, the variance of the mean estimator under MDRSS is always less than the variance of the mean estimator based on SRS and the other methods.

scholarly journals The efficacy of sampling strategies for estimating scabies prevalence

2021 ◽  
Author(s):  
Nefel Tellioglu ◽  
Rebecca H. Chisholm ◽  
Jodie McVernon ◽  
Nicholas Geard ◽  
Patricia T. Campbell
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Sampling Methods ◽  
Indigenous Communities ◽  
Simple Random Sampling ◽  
World Health ◽  
Sampling Strategies ◽  
Specific Component ◽  
Assignment Method ◽  
Wide Range

Background Estimating scabies prevalence in communities is crucial for identifying the communities with high scabies prevalence and guiding interventions. There is no standardisation of sampling strategies to estimate scabies prevalence in communities, and a wide range of sampling sizes and methods have been used. The World Health Organization recommends household sampling or, as an alternative, school sampling to estimate community-level prevalence. Due to varying prevalence across populations, there is a need to understand how sampling strategies for estimating scabies prevalence interact with scabies epidemiology to affect accuracy of prevalence estimates. Methods We used a simulation-based approach to compare the efficacy of different sampling methods and sizes. First, we generate synthetic populations with Australian Indigenous communities' characteristics and then, assign a scabies status to individuals to achieve a specified prevalence using different assumptions about scabies epidemiology (random, age-specific, household-specific, or age-and-household-specific transmissions). Second, we calculate an observed prevalence for different sampling methods (household-based, school-based or random sampling) and sizes. Results The distribution of prevalence in population groups can vary substantially when the underlying scabies assignment method changes. For example, age-specific scabies assignment increases the prevalence among children as well as prevalence in larger households. Household specific assignment approaches introduce higher variance in prevalence among households. Across all of the scabies assignment methods combined, the simple random sampling method produces the narrowest 95% confidence interval for all sampling percentages. The household sampling method introduces higher variance compared to simple random sampling when the assignment of scabies includes a household-specific component. The school sampling method overestimates community prevalence when the assignment of scabies includes an age-specific component. Discussion Our results indicate that there are interactions between transmission assumptions and surveillance strategies, emphasizing the need for understanding scabies transmission dynamics. We suggest using the simple random sampling method for estimating scabies prevalence. Our approach can be adapted to various populations and diseases.

BANKACILIKTA MÜŞTERİ İLİŞKİLERİ YÖNETİMİNİN MÜŞTERİ SADAKATİNE ETKİSİ

2015 ◽  
Vol 3 (1) ◽  
Author(s):  
Fikret GÜMÜŞBUĞA
Keyword(s):  
Customer Loyalty ◽  
Random Sampling ◽  
Management System ◽  
Care Management ◽  
Sampling Method ◽  
Simple Random Sampling ◽  
Face To Face ◽  
Descriptive Research ◽  
Customer Care ◽  
Research Type

This study mainly focuses on customer care management and customer loyalty. Even though there are many experiential studies about customer care management and customer loyalty system, the lack of studies on customers in Karabük and Safranbolu locally, has leaded to focus on this study. Thus, this study mainly focuses on the influence of customer care treatments of banks in Karabük and Safranbolu on customer loyalty. Descriptive research type was used in the study. In this study simple random sampling method was used which is one of the probability sampling method, face to face surwey to all 726 participants was used for the study. As the result of the experiential study, the attendance and influence of customer care management and loyalty systems have been comparatively low, but it has been figured out that customer care management system influences customer loyalty level.

Kapasitas Adaptasi dan Resiliensi Komunitas Menghadapi Bencana Erupsi Gunung Merapi

2019 ◽  
Vol 2 (5) ◽  
pp. 617
Author(s):  
Nyimas Ayu Dillashandy ◽  
Nurmala K Panjaitan
Keyword(s):  
Adaptive Capacity ◽  
Random Sampling ◽  
Qualitative Data ◽  
Sampling Method ◽  
Sampling Technique ◽  
Community Resilience ◽  
Simple Random Sampling ◽  
Quantitative Approach ◽  
Institutional Memory ◽  
Innovative Learning

Mount Merapi eruption has occurred several times in Indonesia and the biggest eruption that last occurred in 2010. The community were suffered losses and were affected by eruptions. The purposes of this research are to analyze community resilience, to analyze the level of vulnerability, and to analize the community adaptive capacity. The research using a quantitative approach supported by qualitative data. Simple random sampling technique is used as the sampling method and the informant was taken purposively. The results of this research showed that when the eruption occurred the community has a high vulnerability. The adaptive capacity is also high with innovative learning based on institutional memory and supported by the connectedness. Communities achieve resilience and can adapt to changes with high adaptive capacity.  Keywords: adaptive capacity, community resilience, eruption, vulnerability ABSTRAK Erupsi Gunung Merapi sudah terjadi beberapa kali di Indonesia dan erupsi terbesar yang terjadi terakhir kalinya yaitu pada tahun 2010. Komunitas mengalami berbagai kerugian dan terkena dampak dari erupsi. Tujuan dari penelitian ini adalah untuk menganalisis resiliensi komunitas, menganalisis tingkat kerentanan komunitas, dan menganalisis kapasitas adaptasi komunitas. Penelitian ini dilaksanakan dengan menggunakan pendekatan kuantitatif yang didukung oleh data kualitatif. Pemilihan responden dilakukan dengan teknik sampel acak sederhana sedangkan pemilihan terhadap informan dilakukan secara sengaja. Hasil penelitian ini menunjukkan bahwa saat erupsi terjadi komunitas memiliki kerentanan yang tinggi. Kapasitas adaptasi komunitas tinggi dengan adanya innovative learning yang didasari oleh pengetahuan dan pengalaman dan didukung oleh jaringan yang dimiliki. Komunitas berhasil mencapai resiliensi dan dapat beradaptasi dengan perubahan-perubahan dengan kapasitas adaptasi yang tinggi.Kata kunci : kapasitas adaptasi, kerentanan, erupsi, resiliensi komunitas

Investigation of Assertiveness Levels of Athletes Engaging Individual Sports in Different Branches

2021 ◽  
Vol 15 (10) ◽  
pp. 2951-2953
Author(s):  
Kenan Sivrikaya ◽  
Aygül Çağlayan Tunç ◽  
Leyla Alizadehebadi ◽  
Selçuk Tarakçi
Keyword(s):  
Random Sampling ◽  
Sampling Method ◽  
Personal Information ◽  
Simple Random Sampling ◽  
Healthy Life ◽  
Independent Variables ◽  
Screening Model ◽  
Individual Sports ◽  
The Way

Background: Assertiveness, which is defined as the way individuals express themselves and as a part of healthy life, is among the prominent features of people who do sports. Assertiveness is an element that increases the quality of people's relationships with their environment. Aim: The aim of this study is to examine the assertiveness scores of the athletes engaged in individual sports in different branches according to independent variables. Methods: The research was designed according to the relational screening model. The sample of the research; The sample consists of 201 participants selected by simple random sampling method among the athletes dealing with different individual sports branches. The branches of the athletes; (Consists of taekwondo and cycling sports) Results: In the study, the personal information form created by the researcher to collect information about the independent variables (gender, age,) that are thought to be effective in the research, and the Rathus Assertiveness Inventory (RAE) were used. It is seen that 1% of the participants are in the avoidant group, 88.6% are in the moderately avoidant group, and 10.6% are in the assertive group. Conclusion: When the assertiveness scale mean scores of the participants by gender are examined, it is seen that the level of assertiveness by gender does not differ statistically significantly. When the assertiveness scale mean scores of the participants according to age are examined, it is seen that the level of assertiveness according to age does not differ statistically significantly. Keywords: Assertiveness, individual sport, Taekwondo, Cycling.

scholarly journals The Effect Of Milenial Generation Characteristics Of Job Satisfaction Relations And Employee Engagement

2020 ◽  
Vol 1 (4) ◽  
pp. 239-248
Author(s):  
Alfatih Sikki Manggabarani ◽  
Faisal Marzuki ◽  
Mahendro
Keyword(s):  
Employee Engagement ◽  
Random Sampling ◽  
Employee Satisfaction ◽  
Sampling Methods ◽  
Simple Random Sampling ◽  
Partial Least Square ◽  
Least Square ◽  
Analysis Method ◽  
Partial Least Square Analysis ◽  
Analysis Technique

This research is a quantitative study that aims to determine the Millennial Generation Characteristics of Employee Engagement. The population in this study The study was conducted by taking samples of Millennials who are actively working at Micro Finance companies with a total of 150 respondents. The sample size was taken as many as 150 respondents, with probability sampling methods especially simple random sampling. Data collection was carried out through questionnaires. The analysis technique used is the PLS (Partial Least Square) analysis method. The results of this study indicate that the value of R- Square (R2) Employee Engagement is 0.786 and Employee Satisfaction is 0.647 thus indicating that the contribution of Grit, Worklife Balance, and Jon Resources variables to Employee Engagement and Employee Satisfaction are 0.786 or 78.6% and 0.647 or 64.7%. And the rest is influenced by other factors not examined.

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