METHOD OF COMBINING INTERVIEWING AND INTERNET SURVEYS DATA TO INCREASE THE ACCURACY OF REGIONAL GOVERNANCE EFFICIENCY INDICATORS

2021 ◽  
pp. 30-34
Author(s):  
А.А. Воробьев ◽  
О.В. Круть
Keyword(s):  
Weighted Average ◽  
High Accuracy ◽  
Regional Governance ◽  
Internet Survey ◽  
Combined Method ◽  
Additional Source ◽  
Political Situation ◽  
Internet Surveys ◽  
Combining Data ◽  
Efficiency Indicators

В статье представлен метод комбинирования данных интервьюирования и интернет-опроса, заключающийся в использовании интернет-опроса в качестве дополнительного источника социологических данных для устранения смещений выборки интервьюирования по квотным признакам. The article presents a method for combining interview data and an Internet survey, which consists in using an Internet survey as an additional source of sociological data to eliminate bias in the interview sample based on quota criteria. The method is based on obtaining weighted average values of indicators based on the results of combining data from two different surveys that differ in the way they communicate with respondents. The effectiveness of using the combined method for constructing predictive estimates of the socio-economic and socio-political situation in the region of high accuracy has been experimentally proved.

Thread Friction Torque in Bolted Joints

2005 ◽  
Vol 127 (4) ◽  
pp. 387-393 ◽  
Author(s):  
Sayed A. Nassar ◽  
Payam H. Matin ◽  
Gary C. Barber
Keyword(s):  
Friction Coefficient ◽  
Current Practice ◽  
Weighted Average ◽  
High Accuracy ◽  
Friction Torque ◽  
Bolted Joints ◽  
Bolted Joint ◽  
Average Value ◽  
Highly Sensitive

In this paper, formulas are developed for the calculation of the effective thread friction radius in fasteners, in order to determine the thread friction torque component. Due to the lack of exact formulas in the literature, current practice uses the average value of the minor and major thread radii, as an approximation, for determining the thread friction torque component. Results provided by these formulas are compared with those given by the current practice that uses the average value of the minor and major thread radii, instead of the exact value. It is well known that the torque-tension relationship in threaded fastener applications is highly sensitive to the friction torque components: between threads, and under the turning fastener head or nut. Even moderate variations or inaccuracies in determining the friction torque components would significantly impact the fastener tension and the joint clamp load. High accuracy in the estimation of the friction torque components is critical, as it directly affects the reliability, safety, and the quality of bolted assemblies. This analysis focuses on the thread friction torque component. The new formulas for the thread friction radius are developed for a mathematical model of a bolted joint using five assumed scenarios of the contact pressure between male and female threads. Because of the fact that the variation in the sliding speed of various points on a thread surface is insignificant, a uniform thread friction coefficient is used in the analysis. However, a contact area weighted average value is used for the thread friction coefficient. Numerical results and error analysis are presented in terms of a single nondimensional variable, namely, the ratio between the major and minor thread radii.

scholarly journals Challenges and Threats Faced in 2020 by International Logistics Companies Operating on the Polish Market

2021 ◽  
Vol 13 (1) ◽  
pp. 359
Author(s):  
Halina Brdulak ◽  
Anna Brdulak
Keyword(s):  
Sustainable Development ◽  
Foreign Capital ◽  
Economic Recession ◽  
Internet Survey ◽  
Financial Indicators ◽  
Logistics Industry ◽  
Internet Surveys ◽  
External Conditions ◽  
Near Future ◽  
Practical Dimension

The main aim of the article is to present an analysis of the current challenges and threats to the Transport-Forwarding-Logistics (TFL) sector in Poland based on internet surveys. The aim of the article is, therefore, to investigate whether the challenges and threats described by managers in a two-year perspective are related to sustainable development. This area primarily concerns external conditions. On the other hand, in the surveys that were the subjects of the analyses, a section related to sustainable development in economic, environmental, and social terms was identified, in which the focus was primarily on the internal activities of the company. The article has a practical dimension. The article analyzes comments from managers posted in an internet survey. They constitute a separate part of the questionnaire, which mainly concerns financial indicators and other factors that determine the company’s competitiveness. Half of the respondents are companies with foreign capital, and half-Polish companies. Based on the comments over a three-year period with over sixty managers from logistics companies in Poland, an analysis of the most important challenges that companies in the logistics industry have to face in the near future was presented. The survey is a part of a broader research project that has been conducted in the form of a quantitative survey among approximately sixty TFL companies for twenty-five years on an annual basis. The results of the survey are supplemented with an attempt to analyze the current situation in 2020 related to the impending economic recession as a result of the coronavirus disease 2019 (COVID-19) threat. The surveyed companies constitute a significant part of the TFL market in Poland. Thus, they are the benchmark for the entire industry. Therefore, an important value of the presented analysis is the up-to-date research, as well as the ability to relate the results and developed scenarios to the entire TFL sector.

The crystal structure of cubic C-type samarium sesquioxide, Sm2O3

2019 ◽  
Vol 74 (5) ◽  
pp. 433-435 ◽  
Author(s):  
Holger Kohlmann
Keyword(s):  
Crystal Structure ◽  
Cross Section ◽  
Weighted Average ◽  
High Accuracy ◽  
Neutron Powder Diffraction ◽  
Powder Diffraction Data ◽  
Interatomic Distances ◽  
Data Space ◽  
Neutron Powder Diffraction Data ◽  
Yield Structure

AbstractCubic C-type samarium sesquioxide, Sm2O3, was prepared by thermal decomposition of samarium carbonate. Its crystal structure was refined based on neutron powder diffraction data [space group Ia3̅, a = 1092.77(6) pm] in order to accurately determine the oxygen atom positions. Isotopically enriched 154Sm2O3 was used for the neutron diffraction work because of the enormous absorption cross section of the natural isotopic mixtures for thermal neutrons. Crystal structure refinements by the Rietveld technique confirm the cubic bixbyite type and yield structure data of high accuracy. Interatomic distances between Sm1 (Wyckoff site 8a) and oxygen are 6 × 235.0(2) pm, and between Sm2 (Wyckoff site 24d) and oxygen 2 × 231.6(2) pm, 2 × 233.7(2) pm, 2 × 240.2(2) pm with a weighted average of d̅(Sm–O) = 235.1(2) pm.

scholarly journals SIZE VS EFFECTIVENESS OF AGRICULTURAL FARMS

2019 ◽  
Vol XXI (2) ◽  
pp. 285-296 ◽  
Author(s):  
Ludwik Wicki
Keyword(s):  
Economies Of Scale ◽  
Size Class ◽  
Main Function ◽  
Additional Source ◽  
Factors Affecting ◽  
Production Factors ◽  
The Family ◽  
Low Efficiency ◽  
Economic Size ◽  
Efficiency Indicators

The size of farms is one of the most important factors affecting their efficiency. The size of farms affects the ability to invest and introduce technical progress, achieve economies of scale, both internal and external, as well as achieving higher efficiency. The aim of the work is to determine the variation in the effectiveness of production factors and the level of investment depending on the economic size of farms. Data from the Polish FADN database for the years 2010-2017 were used. It was found that along with an increase in economic size, the productivity of production factors increased, productivity in crop and animal production grew and the intensity of reproduction of assets increased. It was found that in farms of the first size class (about 10 ha) were characterized by low efficiency in all assessed aspects and achieved worse dynamics of effectiveness changes. In medium-sized farms (50 ha), a 30-80% higher level of all efficiency indicators was achieved and, in the case of work, efficiency even by 600%. It should be emphasized that farms classified as first class size have no development opportunities because they do not generate a sufficient surplus to provide income for the family and implement investments. The main function of small farms may be its social function and its income may only be an additional source of income for the farmer’s family. In order for Polish agriculture to be effective, intensive concentration processes are necessary.

scholarly journals New fat ingredients in confectionary for a healthy diet

2021 ◽  
Vol 296 ◽  
pp. 07002
Author(s):  
Zinaida Baranova ◽  
Sergey Nikonovich ◽  
Natalia Tarasenko ◽  
Elena Baranova ◽  
Svetlana Kucherova
Keyword(s):  
Fatty Acids ◽  
Healthy Diet ◽  
Crystal Formation ◽  
Combined Method ◽  
Trans Isomers ◽  
Additional Source ◽  
Melting Characteristics ◽  
Food Market ◽  
Practical Recommendations ◽  
Selection Of

An important segment of the functional food market is products of the confectionery industry covered with chocolate or confectionery glaze for a healthy diet. The selection of high-quality and technological fat ingredients for the glaze for such products is often difficult due to the specific properties of the functional ingredients in the glaze composition. An additional source of concern is the realization that there are a limited number of vegetable oils and fats in nature that have optimal crystallization and melting characteristics. Therefore they must be subjected to modification processes, such as hydrogenation, to form the hardness and main rheological characteristics of the future fat base. Such processes can negatively affect the consumer properties of the ready-made glaze, due to the formation of trans-isomers of fatty acids. A technology for the production of new fat ingredients by a combined method has been developed. On the basis of the obtained cocoa butter substitutes of non-tempered mixed type, which do not contain trans-isomers of fatty acids, and have optimal characteristics of crystal formation, experimental batches of confectionery glaze were produced and a set of indicators that form the consumer properties of the ready-made product was investigated. The result of the study was practical recommendations for the use of confectionery glazes based on the developed fat ingredients.

scholarly journals Development of English Handwritten Recognition Using Deep Neural Network

2018 ◽  
Vol 10 (2) ◽  
pp. 562 ◽  
Author(s):  
Teddy Surya Gunawan ◽  
Ahmad Fakhrur Razi Mohd Noor ◽  
Mira Kartiwi
Keyword(s):  
Neural Network ◽  
Deep Neural Network ◽  
Recognition Accuracy ◽  
Recognition Rate ◽  
Weighted Average ◽  
Recognition System ◽  
High Accuracy ◽  
Performance Comparison ◽  
Average Recognition Rate ◽  
Handwritten Recognition

Due to the advanced in GPU and CPU, in recent years, Deep Neural Network (DNN) becomes popular to be utilized both as feature extraction and classifier. This paper aims to develop offline handwritten recognition system using DNN. First, two popular English digits and letters database, i.e. MNIST and EMNIST, were selected to provide dataset for training and testing phase of DNN. Altogether, there are 10 digits [0-9] and 52 letters [a-z, A-Z]. The proposed DNN used stacked two autoencoder layers and one softmax layer. Recognition accuracy for English digits and letters is 97.7% and 88.8%, respectively. Performance comparison with other structure of neural networks revealed that the weighted average recognition rate for patternnet, feedforwardnet, and proposed DNN were 80.3%, 68.3%, and 90.4%, respectively. It shows that our proposed system is able to recognize handwritten English digits and letters with high accuracy.

scholarly journals Numerical Approximation for Nonlinear Gas Dynamic Equation

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Hossein Aminikhah ◽  
Ali Jamalian
Keyword(s):  
Laplace Transform ◽  
Closed Form ◽  
Dynamic Equation ◽  
Numerical Approximation ◽  
Perturbation Methods ◽  
High Accuracy ◽  
The Other ◽  
Combined Method ◽  
Homotopy Perturbation ◽  
Gas Dynamic

Laplace transform and new homotopy perturbation methods are adopted to study gas dynamic equation analytically. The solutions introduced in this study can be used to obtain the closed form of the solutions if they are required. The combined method needs less work in comparison with the other homotopy perturbation methods and decreases volume of calculations considerably. Results show that the new method is more effective and convenient to use, and is high accuracy evident.

scholarly journals Local Geographies of Digital Inequality

2017 ◽  
Vol 36 (1) ◽  
pp. 82-102 ◽  
Author(s):  
Grant Blank ◽  
Mark Graham ◽  
Claudio Calvino
Keyword(s):  
Internet Use ◽  
Policy Implications ◽  
Internet Survey ◽  
Sample Survey ◽  
Small Scale ◽  
Digital Inequality ◽  
North East ◽  
The North ◽  
Combining Data ◽  
Geographic Differences

Combining data from a sample survey, the 2013 Oxford Internet Survey, with the 2011 UK Census, we employ small area estimation to estimate Internet use in small geographies in Britain. This is the first attempt to estimate Internet use at any small-scale level. Doing so allows us to understand the local geographies of British Internet use, showing that the area with least use is in the North East, followed by central Wales. The highest Internet use is in London and southeastern England. The most interesting finding is that after controlling for demographic variables, geographic differences become nonsignificant. The apparent geographic differences appear to be due to differences in demographic characteristics. We conclude by considering the policy implications of this fact.

Sampling, Channels, and Contact Strategies in Internet Survey

2013 ◽  
pp. 34-47
Author(s):  
Ester Macrì ◽  
Cristiano Tessitore
Keyword(s):  
Social Networks ◽  
Sampling Procedure ◽  
Internet Usage ◽  
Internet Survey ◽  
The Internet ◽  
Social Scientists ◽  
Policy Makers ◽  
Survey Techniques ◽  
Internet Surveys ◽  
Sampling Procedures

The global diffusion of the Internet involves economic, political, cultural, and geographical factors, making it a very interesting subject for sociologists and policy makers. In the last few years, big changes in Internet usage have occurred. In particular, during the last decade, new Social Networks have social scientists reconsidering their research methodology and developing new survey techniques (Internet Survey Techniques). One of the main challenges presented by Internet Surveys is the sampling procedure, as it must be reconsidered in order to avoid the risk of bias and a lack of scientific accountability. The main questions are: (1) Are classic sampling methods an effective way to investigate new Web reality? (2) How can we conduct a valid survey using the Internet? In this chapter these questions are addressed with methodological attention, starting with the problem of defining population in Internet Surveys. The authors also illustrate the main channels for the conduct of Internet Surveys and their specific characteristics. Finally, they discuss some sampling procedures and contact strategies used in Internet Surveys, with a particular attention to a new and important channel: Social Networks (especially Facebook and Twitter).

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