• Title/Summary/Keyword: Regression Testing

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The influence of adolescents' life satisfaction, and perceived parental rearing style on adolescents' depression: Verification of mediating effect of resilience (청소년의 삶의 만족도 및 인지된 부모양육방식이 청소년의 우울에 미치는 영향: 자아탄력성의 매개효과 검증)

  • Sim, Jeong Yeon;Yoon, Gyung-Ja
    • Journal of Family Relations
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    • v.22 no.2
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    • pp.27-50
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    • 2017
  • Objectives: This study explored the effect of adolescents' sociodemographic variables, parenting rearing styles, resilience, and life satisfaction on adolescents' depression. The resilience as mediating effects of parental rearing styles and life satisfaction on depression was examined as well. Method: The data were from 2,108 middle school freshmen panel of a national sample at the forth year, Korea Children and Youth Panel Survey(KCYPS). Hierarchical multiple regressions and mediation regression analyses, steps for testing mediation by Baron and Kenny, were conducted. Results: Adolescents' resilience had both direct and mediating significant effects, showing that resilience partially mediated the effects of affective parental rearing style and life satisfaction on depression, respectively. Life satisfaction had the most significant impact on adolescents' depression. Conclusions: While some parental rearing styles were significant, adolescents' personal properties including resilience and life satisfaction revealed the most significant explanatory power of adolescents' depression. Life satisfaction was the most powerful predictor for lessening adolescents' depression.

Envisaging Macroeconomics Antecedent Effect on Stock Market Return in India

  • Sivarethinamohan, R;ASAAD, Zeravan Abdulmuhsen;MARANE, Bayar Mohamed Rasheed;Sujatha, S
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.8
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    • pp.311-324
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    • 2021
  • Investors have increasingly become interested in macroeconomic antecedents in order to better understand the investment environment and estimate the scope of profitable investment in equity markets. This study endeavors to examine the interdependency between the macroeconomic antecedents (international oil price (COP), Domestic gold price (GP), Rupee-dollar exchange rates (ER), Real interest rates (RIR), consumer price indices (CPI)), and the BSE Sensex and Nifty 50 index return. The data is converted into a natural logarithm for keeping it normal as well as for reducing the problem of heteroscedasticity. Monthly time series data from January 1992 to July 2019 is extracted from the Reserve Bank of India database with the application of financial Econometrics. Breusch-Godfrey serial correlation LM test for removal of autocorrelation, Breusch-Pagan-Godfrey test for removal of heteroscedasticity, Cointegration test and VECM test for testing cointegration between macroeconomic factors and market returns,] are employed to fit regression model. The Indian market returns are stable and positive but show intense volatility. When the series is stationary after the first difference, heteroskedasticity and serial correlation are not present. Different forecast accuracy measures point out macroeconomics can forecast future market returns of the Indian stock market. The step-by-step econometric tests show the long-run affiliation among macroeconomic antecedents.

The Relationship Between Emotional Intelligence and Organizational Performance: An Exploratory Study in Bangladesh

  • SULTANA, Rebaka;ISLAM, Mohammed Rafiqul;ISLAM, Md. Tariful;JESMIN, Farhana;FERDOUS, Shakila
    • The Journal of Asian Finance, Economics and Business
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    • v.8 no.8
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    • pp.513-524
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    • 2021
  • Many organizations have realized that to stand out in today's competitive business world, they need not only academic skills but also emotional intelligence (EI). This study aims to investigate the relationship between EI and the organizational performance of university teachers. The convenient sampling technique has been used to select 200 respondents from 25 universities, and a self-administered research instrument has been employed to collect data from the respondents. The reliability test of items is confirmed by Cronbach's Alpha test using SPSS. Factor analysis has been used to find out the significant constructs of EI, which influence organizational performance. Likert scale and multivariate regression analysis have been used for measuring questionnaire items and testing hypotheses. The key outcomes of this study suggest that interpersonal competence, job performance, effective leadership, motivation and creativity, and social competence have a vital influence on organizational performance. The study also reveals that a decision-making system should be developed and the policymakers and concerned authorities should give more emphasis on key variables of EI that are affecting the advancement of higher education. Further investigation is encouraged to identify the mediating and moderating effects of EI on the relationship between employee work engagement and job performance in the organization.

Laboratory evaluation of roller compacted concrete containing RAP

  • Ahmadi, Amin;Gogheri, Mohammad K.;Adresi, Mostafa;Amoosoltani, Ershad
    • Advances in concrete construction
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    • v.10 no.6
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    • pp.489-498
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    • 2020
  • This paper investigates mechanical properties of roller compacted concrete (RCC) involving reclaimed asphalt pavement (RAP). In this way, a set of 276 cylindrical RCC specimens were prepared with different RAP sizes (i.e., fine, coarse & total) at various ratios (i.e., 10%, 20%, and 40%). Results reveal that incorporation of RAP decreases unconfined compressive strength (UCS), modulus of elasticity (E), and indirect tensile (IDT) strength of RCC. For each RAP size, a regression model was used to maximize RAP content while satisfying the UCS lower limit (27.6 Mpa) mentioned by ACI as a minimum requirement for RCC used in pavement construction. Moreover, UCS of RAP incorporated mixes, dissimilar to that of control mixes, was found to be sensitive and insensitive to the testing temperature and curing time after 7 days, respectively. The results also demonstrate that the higher amounts of RAP, the more flexibility in RCC is. This issue was also proved by the results of modulus of elasticity test. In addition, the toughness index (TI) shows that increase in RAP content leads to up to 43% increase in energy absorbance capacity of RCC.

A Study on Airline Love Mark and Relation Continuing Intention (항공사 러브마크와 관계지속의도에 관한 연구)

  • Kim, Jung Hee;Han, Soo Yeon;Jin, Sung Hyeon
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.28 no.4
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    • pp.63-68
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    • 2020
  • In this study, The purpose is to understand the influence of lovemark on relation continuing intention. As a result of reliability analysis, the Cronbach's α coefficient of all variables such as lovemark, relation continuing intention showed 0.8 or more, thus ensuring reliability. The results of regression analysis between variables for hypothesis testing are as follows. as a result of analysis on the effect of lovemark on the relation continuing intention, it showed that both factors of love and respect dimension had significant influences, and that the relationship intension also increased as the love and respect dimension increased. As a result of this study, In order to increase lovemark and relationship intension, it was also confirmed that efforts should be focused on immersion between airlines and customers. It was confirmed that efforts to increase the airline's lovemark are needed to retain existing customers and attract new customers.

A Study on the Design of an Efficient Audit Model in the Area of Information System Testing Activities

  • Kim, Hee Wan;Jung, Yong Gyu
    • International Journal of Advanced Culture Technology
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    • v.9 no.1
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    • pp.210-217
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    • 2021
  • In the case of an agile-based project, it was inadequate to perform a comprehensive inspection and evaluation on the establishment and operation of an information system by performing audit only with the audit and inspection elements provided by the existing information system audit and inspection system. In particular, in the case of the test activity area, it was necessary to improve the test activity audit check items to comprehensively check the agile-based development process by applying the existing audit system. To this end, a test activity improvement check model of the agile methodology audit model was presented by applying the repetition concept, a characteristic of the agile methodology. In order to empirically verify the model of this study, a survey was conducted for auditors and designers/developers who have experience in performing agile-based projects and auditing information systems. As a result of the questionnaire on the integrated test and system test in the test stage, more than 70% of the respondents were found to be suitable. More than 80% of the respondents judged that it was appropriate as a result of the questionnaire on "improvement and regression test progress according to integrated test and system test results" and "integrated test and functional actions of components and subsystems".

A comparative study on applicability and efficiency of machine learning algorithms for modeling gamma-ray shielding behaviors

  • Bilmez, Bayram;Toker, Ozan;Alp, Selcuk;Oz, Ersoy;Icelli, Orhan
    • Nuclear Engineering and Technology
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    • v.54 no.1
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    • pp.310-317
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    • 2022
  • The mass attenuation coefficient is the primary physical parameter to model narrow beam gamma-ray attenuation. A new machine learning based approach is proposed to model gamma-ray shielding behavior of composites alternative to theoretical calculations. Two fuzzy logic algorithms and a neural network algorithm were trained and tested with different mixture ratios of vanadium slag/epoxy resin/antimony in the 0.05 MeV-2 MeV energy range. Two of the algorithms showed excellent agreement with testing data after optimizing adjustable parameters, with root mean squared error (RMSE) values down to 0.0001. Those results are remarkable because mass attenuation coefficients are often presented with four significant figures. Different training data sizes were tried to determine the least number of data points required to train sufficient models. Data set size more than 1000 is seen to be required to model in above 0.05 MeV energy. Below this energy, more data points with finer energy resolution might be required. Neuro-fuzzy models were three times faster to train than neural network models, while neural network models depicted low RMSE. Fuzzy logic algorithms are overlooked in complex function approximation, yet grid partitioned fuzzy algorithms showed excellent calculation efficiency and good convergence in predicting mass attenuation coefficient.

Factors Affecting Employee Performance: A Case Study of Railway Maintenance and Engineering Organizations in Thailand

  • POLANANT, Kanut;ROJNIRUTTIKUL, Nuttawut
    • The Journal of Asian Finance, Economics and Business
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    • v.9 no.9
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    • pp.271-281
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    • 2022
  • The objectives of the research are to study the effects of emotional intelligence (EI), reward management (RM), and occupational health and safety (OHS), on employee performance (EP) within a Thai motor service and repair firm. Starting in January 2022 through the end of March 2022, the researchers used simple random sampling techniques to select 88 employees for the case study. The research instrument was a questionnaire with an IOC value between 0.67-1.00 and a reliability value α of 0.78. Survey participants were asked to contribute their opinions to a five-level opinion survey which was hosted on Google Forms. Descriptive statistics analysis (mean and standard deviation) and multiple linear regression analysis were done using SPSS for Windows version 21. The results showed that employee opinions concerning EI, RM, OHS, and EP were at a high level, with the three hypotheses testing showing statistical significance (p ≤ 0.01). The decision coefficients (R2) all revealed relationship strength with RM = 0.861, OHS = 0.853, and EI = 0.731.

Indirect displacement monitoring of high-speed railway box girders consider bending and torsion coupling effects

  • Wang, Xin;Li, Zhonglong;Zhuo, Yi;Di, Hao;Wei, Jianfeng;Li, Yuchen;Li, Shunlong
    • Smart Structures and Systems
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    • v.28 no.6
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    • pp.827-838
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    • 2021
  • The dynamic displacement is considered to be an important indicator of structural safety, and becomes an indispensable part of Structural Health Monitoring (SHM) system for high-speed railway bridges. This paper proposes an indirect strain based dynamic displacement reconstruction methodology for high-speed railway box girders. For the typical box girders under eccentric train load, the plane section assumption and elementary beam theory is no longer applicable due to the bend-torsion coupling effects. The monitored strain was decoupled into bend and torsion induced strain, pre-trained multi-output support vector regression (M-SVR) model was employed for such decoupling process considering the sensor layout cost and reconstruction accuracy. The decoupled strained based displacement could be reconstructed respectively using box girder plate element analysis and mode superposition principle. For the transformation modal matrix has a significant impact on the reconstructed displacement accuracy, the modal order would be optimized using particle swarm algorithm (PSO), aiming to minimize the ill conditioned degree of transformation modal matrix and the displacement reconstruction error. Numerical simulation and dynamic load testing results show that the reconstructed displacement was in good agreement with the simulated or measured results, which verifies the validity and accuracy of the algorithm proposed in this paper.

A Study on Factors Impacting the Satisfaction of Mobile Banking Applications: Mongolian Users (몽골의 모바일 뱅킹 앱 만족도 영향 요인에 관한 연구: 서비스 특성과 품질 특성을 중심으로)

  • Mendjargal, Batburen;Park, Sang-Moon;Kim, Myoung-Soo
    • Asia-Pacific Journal of Business
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    • v.12 no.4
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    • pp.153-161
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    • 2021
  • Purpose - In this study, we tried to find out the determinants of the customer satisfaction in using mobile banking applications. Design/methodology/approach - We conducted an empirical study for hypotheses testing through the analysis using survey data of experienced users in Mongolia. In this study, reliability test, factor analysis, and regression were conducted using SPSS 26.0. Findings - We found that the customer's perception of information quality and system quality in using the mobile banking application is positively associated with the customer satisfaction. in addition, it was found that the convenience in using banking applications is also positively related with the customer satisfaction. Research implications or Originality - Based on the results of an analysis, it was confirmed that the quality of the banking applications is important in retaining customers. the number of viewers is found in most American films released in Korea.