• The Journal of the Acoustical Society of Korea
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• 제19권2E호
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• pp.20-26
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• 2000

A conceptual simplified model of Hartmann-Sprenger tube is suggested and investigated to decouple the regurgitant mode in the present paper. In spite of high nonlinearity, the acoustic behavior of this resonant tube system is dependent on wavelength and depth of the tube. The effect of forcing frequency and tube geometry on jet regurgitant mode are studied and discussed. With a conventional axisymmetric Euler code, sensitive acoustic problems are solved and validated by comparison with analytic theories.

• 한국철도학회:학술대회논문집
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• 한국철도학회 1999년도 추계학술대회 논문집
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• pp.81-90
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• 1999

This study focuses on what factors influence the job satisfaction of KNR. For solving this research question, three important factors affected job satisfaction are selected through literature review : harmonics communication, fairness of personnel management, satisfaction of human relations. This study tests that the cognitive degrees of above factors are defending on different personal characteristics, and also searches the relationship between job satisfaction and the three factors. This study makes the hypothesis based on a conceptual model elicited from the outline of the previous study. To verify the hypothesis, using SPSS WIN 7.5 package is practiced.

• 국제학술발표논문집
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• The 1th International Conference on Construction Engineering and Project Management
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• pp.714-718
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• 2005

Knowledge management (KM) continues to receive mounting interest within the construction industry due to its potential to offer solutions for organisations seeking competitive advantage. This paper presents a KM input-process-output conceptual model comprising unique and well-defined theoretical constructs representing KM practices and their internal and external determinants in the context of construction. The paper also presents the underlying principles used in operationally defining each construct using extant KM literature, and offers a number of testable hypotheses that capture the inter-relationships between the identified constructs.

• 실천공학교육논문지
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• 제11권2호
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• pp.195-206
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• 2019

가속화되는 기술의 진보와 정보통신 기술의 융합으로 평생직장의 개념은 사라지고, 근로자들의 고용안정이 보장되지 않는 경영환경에서 근로자의 경력역량 개발이 중요해지면서 조직 및 국가차원의 다양한 경력역량개발 및 지원을 위한 움직임이 진행되고 있다. 이의 일환으로 국가차원에서 근로자의 맞춤형 경력역량 개발을 지원하고자 경력역량이동지도(CCMM) 개념적 모델이 제안된 바 있다. 본 연구는 경력역량이동지도 개념 모델의 각 단계를 적용해보는 사례연구를 통해 실제 시스템 구현 시고려해야 할 주요 이슈를 도출하고, 시사점을 제공하는 것을 목적으로 한다. 이에, 개념 모델에 제시된 절차를 기반으로 수요자 정보수집, NCS기반 경력역량 자가진단 및 훈련 필요역량 도출, 훈련과정 안내 및 직업정보 제공의 연구절차를 진행하였다. 연구결과, 전기 전자 정보통신 전공 3, 4학년 학생으로 구성된 참여자들은 11개 직무로 경력이동을 하고자 하였다. 이들은 직무역량보다는 일반역량(소프트스킬)이 경력이동을 위해 더욱 중요한 역량으로 인식하고 있었으며, 다양한 활동을 통해 경력역량 개발을 위한 노력을 하고 있는 것으로 나타났다. 자가진단 및 훈련필요역량 도출 결과, 참여자별 필요역량에 대한 평균점수는 1.83점~4.52점인 것으로 나타났으며, 평균점수가 3점 미만인 역량을 훈련필요역량으로 도출하였다. 자가진단 결과를 기반으로 훈련필요역량관련 교육훈련과정, 자격증, 진출가능 직업, 입직 및 경력개발 관련 정보 등을 포함한 역량개발 안내서를 제공한 결과, 대부분의 참가자들은 진단 결과가 유의미하고, 진로 및 직업 정보 탐색에 도움이 되었다는 의견을 제시하였다. 차후 온라인 시스템 상으로 진단하는 체계가 개발된다면 쉽고 빠르게 정보를 얻을 수 있어 도움이 될 것이라는 의견이 많았다. 이러한 연구결과를 바탕으로 시사점을 제시하였다.

• 한국농공학회논문집
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• 제47권3호
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• pp.3-13
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• 2005

The conceptual rainfall-runoff models are used to predict complex hydrological effects of a basin. However, to obtain reliable results, there are some difficulties and problems in choosing optimum model, calibrating, and verifying the chosen model suitable for hydrological characteristics of the basin. In this study, Genetic Algorithm and SCE-UA method as global optimization methods were applied to compare the each optimization technique and to analyze the application for the rainfall-runoff models. Modified TANK model that is used to calculate outflow for watershed management and reservoir operation etc. was optimized as a long term rainfall-runoff model. And storage-function model that is used to predict real-time flood using historical data was optimized as a short term rainfall-runoff model. The optimized models were applied to simulate runoff on Pyeongchang-river watershed and Bocheong-stream watershed in 2001 and 2002. In the historical data study, the Genetic Algorithm and the SCE-UA method showed consistently good results considering statistical values compared with observed data.

• 한국해양공학회지
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• 제31권5호
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• pp.325-334
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• 2017

This paper reports the conceptual design process for a floating metocean data measurement system (FMDMS) for measuring wind information at sea. The FMDMS consists of three circular pontoons, columns, and a deck, which the LiDAR (lighting detection and ranging) is installed on. The dynamics of the mooring lines and motion responses of the FMDMS were analyzed using commercial codes such as WAMIT and OrcaFlex. One design criterion of the developed FMDMS was to maintain the motion responses as small as possible to enhance the LiDAR's accuracy. Starting with the preliminary design parameters such as the FMDMS's principal dimensions, weight, and important parameters of mooring system, we checked whether the FMDMS met the design requirements at each design stage, and then made modifications as necessary. The developed FMDMS showed a large pitch behavior for a small heave motion.

• 융합경영연구
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• 제7권1호
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• pp.26-38
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• 2019

Purpose - This paper is to review recent literature, by conducting a thorough investigation of the limitations and implications for future research on work-life balance with the focus and linkages between work-life balance practices, machine learning and emotional intelligence, work-life conflict, the correlations between work-life enrichment and work-life balance practices, the relationships between employee job satisfaction and work-life balance, the links between work-life balance and the managerial support. Research design, data, and methodology - The paper will further detail linkages between work-life balance and organizational performance outcomes productivity and innovation. Previous literatures have paid attentions to the link of HR practices and organizational outcomes such as productivity, flexibility, and financial performance, but the understanding needs to be extended to involve innovation performance. Dealing with employees' emotions using different machine learning techniques is one of the phenomenal researches in today's world. Here, we examine how far the employees are conscious of their own self and found the ideas and views of an individual about themselves and others. Without proper knowledge about their personality it will be very difficult for an individual to manage their own emotions. This study also aims at finding out the individual abilities to manage their emotions in order to perform well. Conclusions - A theoretical conceptual framework has been built by integrating the existing literature to explain a number of factors which are closely associated with work-life balance. The conceptual model illustrates how the work-life balance interplays with performance and interrelates with the aforementioned factors.

• Journal of Mechanical Science and Technology
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• 제19권9호
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• pp.1821-1832
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• 2005

This study realizes the conceptual method to predict combustion instability in actual full-scale combustion chamber of rocket engines by experimental tests with model (sub-scale) chamber. The model chamber was designed based on the methodologies proposed in the previous work regarding geometrical dimensions and operating conditions, and hot-fire test procedures were followed to obtain stability boundaries. From the experimental tests, two instability regions are presented by the parameters of combustion-chamber pressure and mixture (oxidizer/fuel) ratio, which are customary for combustor designers. It is found that instability characteristics in the chamber with the adopted jet injectors can be explained by the correlation between the characteristic burning or mixing time and the characteristic acoustic time: In each instability region, dynamic behaviors of flames are investigated to verify the hydrodynamically-derived characteristic lengths of the jet injectors. Large-amplitude pressure oscillation observed in upper instability region is found to be generated by lifted-off flames.

• Journal of Information Technology Applications and Management
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• 제24권4호
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• pp.153-170
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• 2017

As the digital economy goes global, firms are trying to find suppliers that can address their managerial goals and strategies. The alternatives are not confined to domestic firms. Firms have been trying to connect to foreign partners worldwide. Although offshore outsourcing grants firms various benefits, they present big cultural challenges. However, there is little research on the impact of cultural or country factors on outsourcing. The goal of this paper is to synthesize the outsourcing success literature and develop propositions for outsourcing success in the context of offshore outsourcing. This paper proposes that cultural effects should be included in evaluating the success of offshore outsourcing. Knowledge sharing and the scope of outsourcing are adopted in the base outsourcing success model from previous literature. In the extended model partnership quality is included as a mediator and organizational capability and outsourcing relationship type are also included as moderator. Finally, the integrated framework of offshore outsourcing success includes cultural factors as moderators of the relationships between outsourcing success antecedents and the success of offshore outsourcing. Reasoning for propositions, managerial implications, and future research directions are discussed.

• 가정과삶의질연구
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• 제20권1호
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• pp.125-138
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• 2002

In this paper, we discuss issues related with conceptual definition and measurement of financial management behavior. Specifically, we examine the relationships among the management behavior relating to throughput, inputs, and outputs, based on the financial management systems model. Fer the analysis, we have reviewed articles that dealt with financial management behavior utilizing financial management systems model. The articles we reviewed appeared between the year 1986 to 2000, in four journals published in Korea (Journal of Korean Home Economics Association, Journal of Korean Home Management Association, Journal of Consumer Studies, and Journal of Korean Family Resource Management) as well as five home economics journals published in the U.S. The implications for the future research of financial management are also Presented.