• Transactions of the Korean Society of Machine Tool Engineers
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• v.17 no.1
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• pp.144-149
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• 2008

This study presents the selection of cutting conditions in high speed pipe cutting machine for the better quality. A high speed pipe cutting machine which uses a rotary knife can make good quality products in short time. But, the machine is much sensitive by cutting conditions because of the complicated mechanism. In this reason, many experiments for cutting condition selection are necessary to improve quality of production. This study carried out cutting experiments with the three factors that are cutting RPM, cutting force and pooling force. 2-dimensional profile measuring instrument is used to measure which is represented by ${\Delta}h$, a sum of burr and collapse height. The effects of factors are analyzed by using MINITAB, the commercial software.

• IE interfaces
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• v.16 no.spc
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• pp.70-75
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• 2003

There have been dramatic technology changes in telecommunication sector during last two decades. New application services like the introduction of international mobile services, fiber optical home services and satellite personal services are expected to play a major role in the whole field of telecommunication services. In the users' viewpoint, the proper selection and the efficient application of the specific telecommunication service among the various alternatives at hand are recognized as principle means for ensuring the whole business competitiveness. Despite the definite need for the telecommunication service selection strategies, very few researches have been reported in this field. In this paper, attempts are made to identify the companies' decision factors considered in selecting the telecommunication services, to draw the strategic dimensions and categorize each company with respect to the identified dimensions, and to finally find the characteristics of each strategic group in selecting the telecommunication service.

• Transactions of the Korean Society of Mechanical Engineers
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• v.12 no.6
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• pp.1246-1251
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• 1988

The experimental analysis method of stress intensity factors by "slab analogy" which was developed by authors proved itself effective to the determination of stress intensity factors of various shape of through cracks. Its experimental results, however, still has errors more or less 10% in comparison with known theoretical values. In this paper, a newly evaluating method, multi-point selection method, is presented by which these errors were decreased by more than 2%.e than 2%.

• The Journal of the Convergence on Culture Technology
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• v.7 no.3
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• pp.203-213
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• 2021

This study involves descriptive research designed to understand the level of major satisfaction, the motivation for major selection, and major commitment of undergraduate nursing students, as well as the factors influencing major commitment and the mediating role of major selection motives. Data collection was conducted with 228 people enrolled in nursing colleges located in Daegu and North Gyeongsang Province, and proceeded from November 7th to November 16th, 2020. The collected data was analyzed with the SPSS/WIN 22.0 program. The analysis found that the level of major satisfaction was high and that the motivation for major selection and the major commitment were strong. Major satisfaction and motivation for major selection were predicted as factors influencing major commitment. Major satisfaction and major commitment were partially mediated by the motive for major selection, and specifically, they were partially mediated by personal motives. These results provide basic information to improve the undergraduate nursing students' major commitment, and suggests the importance of the process in which nursing is selected as a major.

• Journal of the Korean Home Economics Association
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• v.32 no.2
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• pp.129-144
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• 1994

This research is to examine the homogeneity in premarital resources that is exchanged in mate selection and its effect on marital satisfaction among the urban couples in the early period of marriage. Structured questionnaires from 310 urban couples who had been married less than three years were analyzed in this study. First the urban couples tended to seek homogamous selection in age educational level in socioeconomic status of the parents and themselves, Second those who had a spouse from his(her) own religious parental socioeconomic status showed higher level of marital satisfaction than those who had not. The rewards from personal traits such as physical attractiveness gender-role identity personality role-expectation value orientation and perceived reward found to have strong and positive associations with marital satisfaction. Parental approval and semi-arranged marriage were associated with marital satisfaction. Third perceived rewards from these resources and parental approval had significant effects on marital satisfaction; almost half of marital satisfaction was explained by these premarital factors.

• International journal of advanced smart convergence
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• v.9 no.1
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• pp.98-108
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• 2020

We consider transmit antenna selection combined with power allocation for quadrature spatial modulation (QSM) systems to improve the error rate performance. The Euclidean distance-based joint optimization criterion is presented for transmit antenna selection and power allocation in QSM. It requires an exhaustive search and thus high computational complexity. Thus its reduced-complexity algorithm is proposed with a strategy of decoupling, which is employed to successively find transmit antennas and power allocation factors. First, transmit antennas are selected without considering power allocation. After selecting transmit antennas, power allocation factors are determined. Simulation results demonstrate considerable performance gains with lower complexity for transmit antenna selected QSM systems with power allocation, which can be achieved with limited rate feedback.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.6B
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• pp.631-641
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• 2011

Digital Multimedia Broadcasting (DMB) and Internet Protocol Television (IPTV) are now in commercial service, tearing down the traditional boundaries between the telecommunications and broadcasting sectors. These latest developments also hold important implications for research projects in related areas. Both telecommunications and broadcasting being fields with a strong service orientation, market demand should be the primary consideration when selecting research and development (R&D) projects in these areas. This study presents a process for selecting converged telecommunications-broadcasting technology development projects from a demand-oriented perspective, using criteria that are based on projected future demand characteristics. Aimed at increasing the efficiency of the R&D project selection process in telecommunications and broadcasting convergence, this study can point out new directions in R&D management in this field.

• Management & Information Systems Review
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• v.33 no.5
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• pp.97-115
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• 2014

The purpose of this study is to illustrating how the store selection factors affect the customer's satisfaction about the store and the intention of revisit base on the analyzing the store selection factors. At the same time, the difference between the influence on the customer's satisfaction and revisit intention of that in Korea and in China is also compared. Accordingly, through the notional understanding of configuration variables and the investigation of previous research, the Research hypothesis was set and the relevance between the two was inspected. The survey was aimed at the Korean customers who visit the large supermarkets in Korea and Chinese customers who visit the large supermarkets in China. After that, the reliability and validity of the collected data was verified and the research hypothesis was validated by structure equation modeling. The result of this study can by concluded as follows: First, in Korea the customer's satisfaction is showed to be affected by store selection factors, product property, service property and physical environment. Second, in China the customer's satisfaction is showed to be affected by store selection factors, product property, service property and physical environment. Third, in Korea the revisit intention is showed to be affected by customer's satisfaction. Forth, in China the revisit intention is showed to be affected by customer's satisfaction. Fifth, it shows little difference between the store selection factors of the customers visiting large supermarkets in Korea and in China. According to the research results above, the implications can be drawn as the customer's satisfaction of those who visit the large supermarkets may be affected by store selection factors (store property, product property, service property and physical environment). In recent years, more and more overseas large supermarkets are opening in both Korea and China and the competition among each is become more intense day by day. Every larger supermarket is trying their best to refine their store property, product property, service property and physical environment, in order to enhance the customer's satisfaction. The biggest factor that affects the customer's satisfaction and revisit intention in Korea is service property, So that the services requires proper measures and improvement. In China, the factor that affects most on the customer's satisfaction and revisit intention is physical environment. In order to enhance the customer's positive consciousness of stores, the physical environment needs to be well constructed. Lastly, in the compared research between Korea and China, the distribution of survey responders was limited from certain areas. Therefore, the further study can be implemented by more research in various geographical areas and more development in store selection factors.

• 제어로봇시스템학회:학술대회논문집
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• 1989.10a
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• pp.296-301
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• 1989

As a cornerstone of assembly automation, the automatic part feeders are used to feed the various kind of the parts to the assembly workstation in the desired order and fashion. In this paper, EXPERT SYSTEM consisting of the data base for the feeding functions and part properties plus the rule base for the selection of feeder types is developed. The symbolic data of the part properties are used as basic factors in the selection rule of the suitable feeder types.

• Proceedings of the KIEE Conference
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• 2001.11b
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• pp.157-160
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• 2001

The selection of voltage is one of the most significant factors in the design of power system for industrial plant. It is a major factor in determining over-all system cost, flexibility, and ease of future expansion. This paper presents the study results on the selection of economic voltage for low voltage power distribution system.