scholarly journals Theoretical Analysis and Experimental Research on the Adjustment for Pre-Stress Deviation of the Cable-Bar Tensile Structures

2021 ◽  
Vol 11 (12) ◽  
pp. 5744
Author(s):  
Lianmeng Chen ◽  
Yijie Liu ◽  
Yihong Zeng ◽  
He Zhang ◽  
Yiyi Zhou
Keyword(s):  
Error Analysis ◽  
Adjustment Process ◽  
Research Results ◽  
Adjustment Method ◽  
Structural Deformations ◽  
Internal Forces ◽  
Errors Analysis ◽  
The Relationship ◽  
Adjustment Scheme ◽  
Theoretical Results

Construction errors are unavoidable in actual cable-bar tensile structures. Construction error analysis, evaluation, and especially adjustment theories were still in their infancy. For the improvement of the situation, based on the equilibrium equation, physical equation, and geometric equation for pin-joint structures, the member length deviation was adopted as the variable, and the relationship between the pre-stress deviation and member length deviation was determined. On this basis, an adjustment method was devised for the pre-stress deviations under three different conditions, and an evaluation of the effectiveness for pre-stress deviation adjustment was proposed. Finally, a 5-m diameter cable-bar tensile structure model was designed and constructed for simulation. The research results demonstrated that the adjusted pre-stress deviations of measuring points can be effectively corrected, and the theoretical results generally coincided with the experimental results. The adjustment effects of pre-stress deviation varied with the number of adjustment cables, and the adjustment effectiveness gradually decreased with the reduction of the number of adjustment cables. Different adjustment schemes produced different structural deformations, and it was necessary to prioritize the adjustment scheme that resulted in lower peak values of internal forces and shape changes during the adjustment process. The research results indicated that the correctness and validity of the proposed error analysis and adjustment method of pre-stress deviation, and its practical application in the guidance of construction errors analysis, pre-stress deviation adjustments, and evaluation of adjustment results of actual pretension structures.

Academic motivation and professional skills development in the Specialty of Social Sciences and Tourism at a public university [Motivación académica y desarrollo de competencias profesionales en la Especialidad de Ciencias Sociales y Turismo de una universidad pública]

2019 ◽  
Vol 1 (2) ◽  
pp. 96
Author(s):  
Ana Cecilia De Paz Lazaro ◽  
Jessica Luz Palomino Collantes
Keyword(s):  
Social Sciences ◽  
Academic Motivation ◽  
Public University ◽  
Skills Development ◽  
Professional Skills ◽  
Research Results ◽  
Competencias Profesionales ◽  
High Level ◽  
The Relationship

The objective of the research is to determine the relationship between academic motivation and the professional skills development in the specialty of Social Sciences and Tourism. The study is quantitative and the design is non-experimental correlational translational. The results indicate that there is a high level relationship (0.914) between the independent academic motivation variable and the professional competences development in the Specialty of Social Sciences and Tourism. In conclusion, motivation is directly related to the professional skills development in the specialty of Social Sciences and Tourism. The research results conclude that there is a high relationship between the variables.

PRAGMATIC CHARACTERISTICS OF HUMOROUS APHORISMS IN THE CONTEXT OF LIFE SPACE

2020 ◽  
Vol 76 (4) ◽  
pp. 18-23
Author(s):  
LARISA V. Burmistrova ◽  
Keyword(s):  
Positive Attitude ◽  
Negative Attitude ◽  
The Internet ◽  
Study Guide ◽  
Life Space ◽  
Research Results ◽  
The Relationship

The analysis of pragmatic characteristics of humorous aphorisms in the context of life space. Author's humorous aphorisms of famous writers, poets, historians of the 17th, 18th, 19th centuries and modern humorous aphorisms posted on the Internet; collection of sayings, quotes and aphorisms “Big Book of Wisdom” (edited by Yuri Lavrov). The relevance of the research is determined by the interest in comic universal expressions, network discourse, comical texts. The research results are applicable when compiling a study guide for students or can be used to compile a psychological portrait of the hero of the work. The aim of the present study is to investigate the pragmatic characteristics of humorous aphorisms. It is analyzed that humorous aphorisms of famous writers, poets, historians of the 17th, 18th, 19th centuries and modern humorous aphorisms affect the main aspects of life. Pragmatic characteristics of humorous aphorisms are analyzed. It was found that the humorous aphorisms most vividly reflect the relationship and love between a man and a woman, the intellect of a woman and a man, care of women, the image of a strong, ambitious man, relationships in marriage, feelings (love and happiness), positive attitude (purposefulness, necessity of education), negative attitude (duplicity, laziness, stupidity, slight knowledge, exaggeration of material value), the contrary opinion of an optimist and a pessimist.

scholarly journals Wicksell's Problem in Local Stereology

2013 ◽  
Vol 45 (4) ◽  
pp. 925-944
Author(s):  
Ó. Thórisdóttir ◽  
M. Kiderlen
Keyword(s):  
Reference Point ◽  
Simulated Data ◽  
Domain Of Attraction ◽  
Spherical Particles ◽  
Section Profile ◽  
Particle Parameters ◽  
The Individual ◽  
The Relationship ◽  
Theoretical Results ◽  
Isotropic Random

Wicksell's classical corpuscle problem deals with the retrieval of the size distribution of spherical particles from planar sections. We discuss the problem in a local stereology framework. Each particle is assumed to contain a reference point and the individual particle is sampled with an isotropic random plane through this reference point. Both the size of the section profile and the position of the reference point inside the profile are recorded and used to recover the distribution of the corresponding particle parameters. Theoretical results concerning the relationship between the profile and particle parameters are discussed. We also discuss the unfolding of the arising integral equations, uniqueness issues, and the domain of attraction relations. We illustrate the approach by providing reconstructions from simulated data using numerical unfolding algorithms.

Research on the Attenuation Law of Stress Wave Propagation in Concrete Media

2013 ◽  
Vol 671-674 ◽  
pp. 758-767
Author(s):  
Wei Sun ◽  
Shi Yan ◽  
Shao Fei Jiang
Keyword(s):  
Wave Propagation ◽  
Attenuation Coefficient ◽  
Polynomial Function ◽  
Piezoelectric Ceramics ◽  
Stress Waves ◽  
Stress Wave Propagation ◽  
Research Results ◽  
Cubic Polynomial ◽  
The Relationship ◽  
Main Factor

This paper presents an experimental method to investigate the attenuation performance of stress waves in concrete structures embedded in piezoelectric ceramics. To get the research objective, a series of test were hold. The relationship curve between the frequency and the attenuation coefficient was fit. The calculation method for propagation distances of stress waves with constant amplitudes and frequencies in the concrete medium was proposed. The research results show that the relationship curve of attenuation coefficient and frequency conform to the cubic polynomial function approximately. The attenuation performance for the concrete structure embedded into piezoelectric ceramics is relevant to the frequency, the amplitude and the medium character, and the frequency is the main factor. The research results of this paper can provide an effective evidence for correctly placing transducers.

scholarly journals Relationship between Entrepreneurial Team Characteristics and Venture Performance in China: From the Aspects of Cognition and Behaviors

2020 ◽  
Vol 12 (1) ◽  
pp. 377 ◽  
Author(s):  
Xue-Liang Pei ◽  
Tung-Ju Wu ◽  
Jia-Ning Guo ◽  
Jia-Qi Hu
Keyword(s):  
Structural Equation ◽  
Equation Modeling ◽  
Team Cognition ◽  
Team Members ◽  
Research Results ◽  
Venture Performance ◽  
Entrepreneurial Team ◽  
Behavior Characteristics ◽  
And Behavior ◽  
The Relationship

Entrepreneurial and innovative activities are becoming a global economic and social phenomenon, especially in emerging economies. This study focuses on a typical emerging economy, China, and its entrepreneurial and innovative activities. On the basis of current research, the literature review and the chain of “cognition–behavior–outcome” are used for constructing the theoretical model for the relationship among entrepreneurial team cognition characteristics, behavior characteristics, and venture performance. A total of 101 valid copies of questionnaire are collected from entrepreneurial team members, as the research objects, and the structural equation modeling (SEM) method is applied to test the theoretical hypotheses. The research results reveal (1) significant effects of entrepreneurial team cognition characteristics and behavior characteristics on venture performance and (2) partial mediating effects of entrepreneurial team behavior characteristics on the relationship between cognition characteristics and venture performance. The research results are the expansion of research on entrepreneurial teams as well as the important reference for entrepreneurial team management and behavioral practice.

scholarly journals DISPARITIES IN THE PERCEPTION OF BUSINESS RISKS IN CONNECTION WITH THE ACHIEVED EDUCATION OF THE OWNER/MANAGER AND DOING BUSINESS

2021 ◽  
Vol 9 (1) ◽  
pp. 25-40
Author(s):  
Ján Dvorský ◽  
Jaroslav Belás, Jr. ◽  
Gentjan Çera ◽  
Svitlana Bilan
Keyword(s):  
Employee Turnover ◽  
Chi Square ◽  
Legal Risk ◽  
Research Results ◽  
Doing Business ◽  
Risk Sources ◽  
Statistical Hypotheses ◽  
Chi Square Test ◽  
The Relationship ◽  
Visegrád Countries

The article aims to identify disparities in the perception of business risks connected with the achieved education of the owner/manager and doing business in the SME segment. The study's empirical part was realised on 1585 fulfil questionnaires of SMEs in the Visegrad countries (V4). The Chi-square test and Z-test verified the formulated statistical hypotheses. The research results brought a common and different perception of business risks between the examined groups of entrepreneurs. The results showed that the relationship between education and the entrepreneur's business area is not a statistically significant factor in the perception of market, financial and legal risk sources. On the contrary, disparities are significant in the perception of selected sources of management, strategic and personnel risk, between groups of entrepreneurs regarding the relationship between education and the business of the entrepreneur. Entrepreneurs whose education is related to the area of business perceive the sources of personnel risk (employee turnover and the effort of employees to increase their performance) more positively than entrepreneurs whose education is not related to business.

scholarly journals HUBUNGAN ANTARA EFIKASI DIRI DENGAN KECEMASAN MENGHADAPI PERTANDINGAN PADA ATLET DI SEKOLAH SEPAK BOLA APAC INTI

2019 ◽  
Vol 1 (3) ◽  
pp. 314-323
Author(s):  
Leni DarmaWanti ◽  
Margaretta Erna Setianingrum
Keyword(s):  
Correlation Coefficient ◽  
Self Efficacy ◽  
Negative Relationship ◽  
Sampling Technique ◽  
Male Students ◽  
Research Results ◽  
School Anxiety ◽  
Significant Negative Relationship ◽  
Correlational Method ◽  
The Relationship

This study aims to determine the relationship between self-efficacy with anxiety facing matches in athletes at the Apac Inti soccer school. Anxiety will arise when faced with something new such as facing a match. Athletes who master physical, technical, and good tactics, but if an athlete's mind is disturbed by excessive negative things, it can interfere with concentration and not optimal in the competition, causing athletes to feel anxious. The population in this study were 40 male students of Apac Inti aged 15-18 years. This research uses a quantitative correlational method with saturated sampling technique. Based on the research results obtained correlation coefficient (r) = -0.547; p <0.05 and it can be concluded that there is a significant negative relationship between self-efficacy with anxiety facing the match in athletes at Apac Inti soccer school.

scholarly journals Late Permian to Holocene Paleofacies Evolution of the Arabian Plate and its Hydrocarbon Occurrences

GeoArabia ◽  
2001 ◽  
Vol 6 (3) ◽  
pp. 445-504 ◽  
Author(s):  
A.Ziegler Martin
Keyword(s):  
Sediment Supply ◽  
Arabian Plate ◽  
Late Permian ◽  
Time Intervals ◽  
Structural Pattern ◽  
Depositional History ◽  
Petroleum Systems ◽  
Structural Deformations ◽  
History Of ◽  
The Relationship

ABSTRACT A series of 19 paleofacies maps have been generated for given time intervals between the Late Permian and Holocene to reconstruct the depositional history of the Arabian Plate. The succession of changing lithological sequences is controlled by the interplay of eustacy and sediment supply with regional and local tectonic influences. The Mesozoic paleofacies history of the Plate is, in its central and eastern portion east of Riyadh, strongly influenced by an older N-trending, horst and graben system that reflects the grain of the Precambrian Amar Collision and successively younger structural deformations. The late Paleozoic Hercynian orogenic event caused block faulting and relative uplift and resulted in a marked paleorelief. This jointed structural pattern dominated the entire Mesozoic and, to some extent, the Cenozoic facies distribution. The relationship between producing fields and the paleofacies maps illustrates the various petroleum systems of particular times and regions.

scholarly journals Conflict-Directed Backjumping Revisited

2001 ◽  
Vol 14 ◽  
pp. 53-81 ◽  
Author(s):  
X. Chen ◽  
P. Van Beek
Keyword(s):  
Constraint Satisfaction Problems ◽  
Local Consistency ◽  
Backtracking Search ◽  
Arc Consistency ◽  
Look Ahead ◽  
Variable Ordering ◽  
Look Back ◽  
The Look ◽  
The Relationship ◽  
Theoretical Results

In recent years, many improvements to backtracking algorithms for solving constraint satisfaction problems have been proposed. The techniques for improving backtracking algorithms can be conveniently classified as look-ahead schemes and look-back schemes. Unfortunately, look-ahead and look-back schemes are not entirely orthogonal as it has been observed empirically that the enhancement of look-ahead techniques is sometimes counterproductive to the effects of look-back techniques. In this paper, we focus on the relationship between the two most important look-ahead techniques---using a variable ordering heuristic and maintaining a level of local consistency during the backtracking search---and the look-back technique of conflict-directed backjumping (CBJ). We show that there exists a ``perfect'' dynamic variable ordering such that CBJ becomes redundant. We also show theoretically that as the level of local consistency that is maintained in the backtracking search is increased, the less that backjumping will be an improvement. Our theoretical results partially explain why a backtracking algorithm doing more in the look-ahead phase cannot benefit more from the backjumping look-back scheme. Finally, we show empirically that adding CBJ to a backtracking algorithm that maintains generalized arc consistency (GAC), an algorithm that we refer to as GAC-CBJ, can still provide orders of magnitude speedups. Our empirical results contrast with Bessiere and Regin's conclusion (1996) that CBJ is useless to an algorithm that maintains arc consistency.

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