نتایج جستجو برای: quantitative data

تعداد نتایج: 2630539  

Journal: :Applied Network Science 2021

Abstract A common issue in trade network analysis is missing data, as some countries do not report flows. This paper explores what constitutes suitable how to deal with and demonstrates the results using key measures. All-to-all potential connectivity of between considered a starting point, contrast approach analyzing networks only that actually In order fill gap two approaches, more complete d...

Journal: :Biostatistics and biometrics open access journal 2021

Usually, quantitative data standardization and/or normalization procedures requested in biological and as well biomedical analysis with the purpose to infer about linear regression relationship between processed variables conditions. Here, we embarked understand performance of transformation systems terms reducing variability assessing distribution normality by a computational statistic approac...

Coastal areas usually involves in several kinds of water use, such as agricultural, industrial, and drinking, which are needed to be considered as important in water management systems. There is a need to study the sustainable water resources management in different terms. A combined methodology, which considers the human activities, as well as environmental problems according to some criteria,...

Journal: :پژوهشنامه مدیریت تحول 0
احمد عیسی خانی علی اصغر فانی حسن دانایی فرد

work engagement literature has been dominated by quantitative research methods. this article aims to study work engagement antecedents using mixed-method sequential explanatory design. this design starts with the collection and analysis of quantitative data followed by the subsequent collection and analysis of qualitative data. the qualitative phase of the study was designed to incorporate the ...

Baojiang Chen, Grace Y. Yi, Lihua Wang, Longyang Wu, Zhijian Chen,

A common study to investigate gene-environment interaction is designed to be longitudinal and population-based. Data arising from longitudinal association studies often contain missing responses. Naive analysis without taking missingness into account may produce invalid inference, especially when the missing data mechanism depends on the response process. To address this issue in the ana...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده صنایع و سیستمها 1387

فعالیت های نگهداری و تعمیرات اطلاعاتی را تولید می کند که می تواند در تعیین زمان های بیکاری و ارایه یک برنامه زمان بندی شده یا تعیین هشدارهای خرابی به پرسنل نگهداری و تعمیرات کمک کند. وقتی که مقدار داده های تولید شده زیاد باشند، فهم بین متغیرها بسیار مشکل می شوند. این پایان نامه به کاربردی از داده کاوی برای کاوش پایگاه های داده چندبعدی در حوزه نگهداری و تعمیرات، برای پیدا کردن خرابی هایی که موجب...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - پژوهشکده علوم انسانی و اجتماعی 1391

the central purpose of this study was to conduct a case study about the role of self monitoring in teacher’s use of motivational strategies. furthermore it focused on how these strategies affected students’ motivational behavior. although many studies have been done to investigate teachers’ motivational strategies use (cheng & d?rnyei, 2007; d?rnyei & csizer, 1998; green, 2001, guilloteaux & d?...

Journal: :Journal of chemical information and computer sciences 2002
Paolo Mazzatorta Emilio Benfenati Daniel Neagu Giuseppina C. Gini

While mining a data set of 554 chemicals in order to extract information on their toxicity value, we faced the problem of scaling all the data. There are numerous different approaches to this procedure, and in most cases the choice greatly influences the results. The aim of this paper is 2-fold. First, we propose a universal scaling procedure for acute toxicity in fish according to the Directiv...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده اقتصاد 1393

due to extraordinary large amount of information and daily sharp increasing claimant for ui benefits and because of serious constraint of financial barriers, the importance of handling fraud detection in order to discover, control and predict fraudulent claims is inevitable. we use the most appropriate data mining methodology, methods, techniques and tools to extract knowledge or insights from ...

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