• International Journal of Naval Architecture and Ocean Engineering
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• v.6 no.2
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• pp.496-506
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• 2014

In this paper the scenario based optimization of the bulbous bow of the KRISO Container Ship (KCS) is presented. The optimization of the parametrically modeled vessel is based on a statistically developed operational profile generated from noon-to-noon reports of a comparable 3600 TEU container vessel and specific development functions representing the growth of global economy during the vessels service time. In order to consider uncertainties, statistical fluctuations are added. An analysis of these data lead to a number of most probable upcoming operating conditions (OC) the vessel will stay in the future. According to their respective likeliness an objective function for the evaluation of the optimal design variant of the vessel is derived and implemented within the parametrical optimization workbench FRIENDSHIP Framework. In the following this evaluation is done with respect to vessel's calculated effective power based on the usage of potential flow code. The evaluation shows, that the usage of scenarios within the optimization process has a strong influence on the hull form.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.19 no.40
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• pp.291-299
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• 1996

This study is concerned with the evaluation model construction of Man-Machine System(MMS) using Transfer Function in order to improve the control characteristics of an operator in the system and the procedure for ergonomic system design, When man, as a subsystem, performs his allocated functions in a system, many physical and physiological problems such as fatigue, stress and error occur. And the imperfect design of a MMS may itself be a situational factor that accelerates stress as well as an idiosyncratic factor that causes errors. So, the economy of design should be considered together with the ergonomic characteristics on the evaluation of MMS.

• Journal of the Korean Data and Information Science Society
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• v.19 no.3
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• pp.775-788
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• 2008

In this study, the consumers were classified into Risk Avoidance Group, Enjoyment and Economy Group, Low Involving Group and High Involving Group by shopping propensity of the consumers and investigated the difference in their evaluation criteria and purchasing intention. The samples used in this study are 214 university students in Busan area who visited the internet shopping mall or had an experience to buy clothes through an internet. The purpose of this study is to identify how the internet university students' clothes shopping propensity and demographical factors affect the evaluation criteria and purchasing intention for clothes. And based on the results, the implications for internet clothes shopping mall are suggested and post research subject is provided as well.

• The Journal of the Acoustical Society of Korea
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• v.7 no.4
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• pp.22-30
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• 1988

In this paper, the sound radiation from a clamped circular plate in an infinite baffle is calculated by using the FFT technique. The radiated sound fields are obtained by two-dimensional fast Fourier transform method is the spatial domain instead of a direct numerical evaluation of Rayleigh integral for economy of the computation time. The computation time is consumed at least by 1/200 times of the direct numerical evaluation on the Rayleigh integral in acoustic fields. The FFT method can be applicable to any shaped geometry as well as circular plate. The FFT solution could be very powerful in predicting the near and far fields of complex structures.

• Journal of the Korea Institute of Building Construction
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• v.13 no.2
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• pp.159-168
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• 2013

Construction projects have become increasingly complex in recent years, resulting in substantial safety hazards and frequent fall accidents. In an attempt to prevent fall accidents, various safety management systems have been developed. These systems have mainly been evaluated qualitatively and subjectively by practitioners or supervisors, and there are few tools that can be used to quantitatively evaluate the performance of safety management systems. We propose an expertise-based safety performance evaluation model (EXSPEM), which integrates a fuzzy approach-based analytic hierarchy process and a regression approach. The proposed model uses S-shaped curves to represent the degree of contribution by subjective expertise and is verified by a genetic algorithm. To illustrate its practical application, EXSPEM was applied to evaluate the safety performance of a newly developed real-time mobile detector monitoring system. It is expected that this model will be a helpful tool for systematically evaluating the application of a robust safety control and management system in a complex construction environment.

• Asia-Pacific Journal of Business
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• v.1 no.2
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• pp.1-21
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• 2010

A good brand name is very important for the success of a product. A thoughtful brand name can convey information that can influence potential customers in a positive way. Thus marketers often formulate brand names intended to explicitly or implicitly play a role in influencing customer perceptions. One way of doing this is to have a brand name bearing connotations to a foreign country. In general, prior research on country-of-origin effects has not adequately focused on exploring brand name connotation and its effect on product evaluation. This research presents a conceptual framework for determining if/how brand name connotation to a foreign country affects product evaluation. Specifically, this paper reviews relevant literature pertaining to country-of-origin and brand name connotation, discusses a conceptualization, proposes research hypotheses, and outlines procedures for collecting data to evaluate the proposed hypotheses.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.21 no.45
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• pp.11-23
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• 1998

This paper presents a more efficient evaluation of alternatives by use of multi-criteria decision making methodlogy under fuzzy intersectional dependence relations. The performance evaluation of most systems such as weapons, enterprise systems etc. are multiple criteria decision making problems. The descriptions and judgements on these systems are usually linguistic and fuzzy. The traditional methods of Analytic Hierarchy Process(AHP) are mainly used in crisp(non-fuzzy) decision applications with a very unbalanced scale of judgements and rank reversal. To overcome these problems, we will propose a new, general decision making method for evaluation models using fuzzy AHP(FAHP) under fuzzy intersectional dependence relations. The T.M.S alternatives A, B and C will be evaluted by the Fuzzy Analytic Hierachy Process (FAHP) based on entropy weight in this study. We will use symmetric triangular fuzzy numbers to indicate the relative strength of the elements in the hierachy and degree of intersection between criteria. These problems are evaluated by five criteria : tactical criteria, technology criteria, maintenance criteria, economy criteria, advacement criteria.

• Journal of Electrical Engineering and Technology
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• v.12 no.2
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• pp.621-631
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• 2017

In this paper, we study the various impacts of connecting distributed generation (DG) to the distribution network. The comprehensive evaluation index system (CEIS) of four hierarchies is established, considering economy, reliability and voltage quality, and the calculation methods of different indexes are presented. This paper puts forward an improved triangular fuzzy number analytic hierarchy process (ITFNAHP) to weight the second level indexes (SLI) and the third level indexes (TLI), and calculates the variation coefficient to weight the fourth level indexes (FLI). We calculate the comprehensive weight coefficients based on the weight coefficients of the SLI, TLI and FLI, and then calculate the comprehensive evaluation of satisfaction (CES) of different access schemes. On the basis of the IEEE 33-bus example system, simulations of the calculation methods and the comprehensive evaluation method are carried out under different DG access schemes according to the same total investment cost and the same permeability, respectively, and the simulation results are analyzed and discussed.

• Asia-Pacific Journal of Business
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• v.14 no.1
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• pp.1-19
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• 2023

Purpose - The purpose of this study was to examine the internal relevance between digital transformation, manipulation of asset evaluation and corporate M&A performance and further explores the impact path of manipulation of asset valuation on corporate M&A performance. Design/methodology/approach - This study based on the financial data of A-share listed companies in Shanghai and Shenzhen Stock Exchanges from 2013 to 2021. Findings - First, manipulation of asset evaluation is negatively correlated with M&A performance. Second, Digital transformation significantly weakens the negative correlation between manipulation of asset evaluation and corporate M&A performance. Third, The effectiveness of internal control plays a partially intermediary role in the process of manipulation of asset evaluation affecting M&A performance. Research implications or Originality - Enriching the existing literature on the subject, the study can also provide useful reference for improving the performance of corporate mergers and acquisitions, regulating asset valuation, promoting the digital transformation of enterprises and improving internal control mechanisms, with both theoretical and practical implications.

• Journal of Korean Society of Rural Planning
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• v.13 no.1 s.34
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• pp.11-17
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• 2007

Rural landscape is essential resources to reinvigorate rural tourism and local economy. The objective of this study is to apply the methodology that can assess landscapes of many rural villages based on the data of Rural Amenity Resource Survey. Above all, to make the data of rural amenity resources survey appropriate for landscape assessment, that was reclassified into 4 landscape resource and 12 lower items. Secondly, 4 evaluation standards of rural landscape; weight of landscape resources, weight of lower items, evaluation of lower items as the number, and evaluation of management condition was established by questionnaire survey. Thirdly, the evaluation standards was applied to case study area; Jug-Goc Myeon, Goc-Seong county, Jeollanamdo. Finally, this result was compared with the other result that management condition was not included in, and the villages that were urgent to improve management condition were selected. As a result, water resource and management condition have great effects on the total quality of rural landscape. Therefore, there are many villages that have peat potentials although that indicates low quality of landscape, now.