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경영정보시스템 구축에 따른 End-User의 업무 만족도에 대한 연구
손진혁 동국대학교 경영관리연구소 1995 經營經濟論叢 Vol.19 No.-
The purpose of this thesis is to study End User's satisfaction in Management Information Systems. This thesis has two basic objective : 1) to examine the relationships between End User's satisfaction and organizational supports, End User's satisfaction and task structure, End User's satisfaction and user attitude. 2) to investigate that user variables(organizational supports, task structure and user attitude) may affect different impact on User satisfaction. For this purpose, I have reviewed the results of past studies on the performance factors of MIS, and introduced an new studying model. On the basis of this new studying model, Hypotheses are as follows : H1 : Organizational support is positively related to the user satisfaction. H2 : Task structure is positively related to the user satisfaction. H3 : User attitude is positively related to the user satisfaction. H2 : User variables may affect different impact on user satisfaction. Among four hypotheses, three hypotheses(H1, H3 and H4) are suppoted and H2 is rejected.
손진혁 동국대학교 경영관리연구소 1994 經營經濟論叢 Vol.18 No.-
Under the recent change in corporate environment, marketing managers must cope with these changes creatively and systematical in order to have an advantage over competitions in markets. It is necessary that marketing managers should use marketing information system to cope with these changes. Clearly, marketing information system will provide useful information and the information will improve manager's decision making. This thesis defined marketing information system and discussed the role, benefit of marketing information system by the related literature. The purpose of this thesis is finding out the most efficient way of utilizing marketing information system and activities of it. Marketing information systems support the marketing function. They may be categorized as operational, tactical, and strategic in nature. Operational marketing information systems include systems that support the sale of the organization's goods and services. Tactical Marketing information systems support marketing managers in the management and control of the salesforce, sales campaign, advertising and promotion campaigns, pricing, and the distribution and delivery of goods and services. Strategic marketing information systems help top management plan and development new products and forecast sales. Two major information systems that support both tactical and strategic decision making are marketing systems and competitive tracking information systems. To improve Marketing information systems can be listed as follows ; ①The support from top management for better utilizing marketing information system is the most important factor for the improvement of marketing information system. ②The improvement and diversification of software is necessary together with securing well-educated and trained experts in software. ③Data base management system should be more developed and improved.
최진혁 梨花女子大學校 醫科大學 醫科學硏究所 1995 EMJ (Ewha medical journal) Vol.18 No.2
Serum levels of carcinoembryonic antigen(CEA) were determined in 65 patients with non-small cell lung cancer to investigate the correlation with clinico-pathologic characteristics. The most common histologic type was sdenocarcinoma(44.6%), followed by sqaumous cell carcinoma(41.5%) and large cell carcinoma(9.2%). Many patients were in unresectable advanced stage(ⅢB : 21.5%, Ⅳ : 46.2%). Serum CEA was positive(defined as>10ng/ml) in 28 patients(43.1%). The positivity of Serum CEA was signigicantly higher in adenocarcinoma(69.0%) than that in sqaumous cell carcinoma(25.9%) and large cell carcinoma(0.0%)(p=0.0004). There was no statistically significant difference in positivity of CEA according to stages. Serum CEA level does not seem to be seletive or specific standard tumor marker of non-small cell lung cancer patients. However, it may be useful as prognostic marker or monitor of treatment results, especially in adenocarcinoma.
Cisplatin을 포함하는 복합 항암화학요법후의 저마그네슘혈증
최진혁 梨花女子大學校 醫科大學 醫科學硏究所 1995 EMJ (Ewha medical journal) Vol.18 No.1
The development of hypomagnesemia was investigated retrospectively in 25 patients with malignancy treated with cisplatin containing combination at the first time. Serum magnesium levels were measured 1 day after completion of cisplatin infusion. The most common type of cancer was lung cancer(9 patients) followed ny gastric cancer(5 patients), pancreas cancer, unknown prinary cancer(2 patients, respectively) and so on. EP(etoposide, cisplatin)was the most frequently administered regimen. Five patients had previous history of chemotherapy. While 10 patients received cisplatin dose of 80 mg/m^2(body surface area) or more, 15 patients received less than mg/m^2. The mean serum magnesium concentration after chemotherapy was 1.93±0.25mg/dl(1.5-2.6mg/dl), and 8 patients(32.0%) developed hypomagnesemia(<1.9mg/sl). The incidence of hypomagnesemia showed no correlation among age of patients, dose of cisplatin, history of previous chemotherapy and regimens of chemotherapy. The serum potassium concentration after chemotherapy was not statistically different compared with that of before chemotherapy. There was no episode of symptomatic hypomagnesemia. In conclusion, hypomagnesemia is relatively common side effect of cisplatin infusion, therefore, frequent measurement of serum magnesium concentration should be mandatory in patients redeiving cisplatin containing chemotherapy.
都市型 有料老人福祉施設의 動向과 建築計劃的 提案에 關한 硏究
이진혁,임창복 대한건축학회 2005 대한건축학회논문집 Vol.21 No.3
Housing is one of the most important issues in the consideration of social welfare for the elderly. The purpose of this study is to offer basic research data of planning and to cope with coming aged society through architectural design proposal of proper urban type user-charged residential facilities to live continuously where they are. As a result, 1. as selecting locations for residential facilities, elderly social welfare facilities need to be located in 10 minutes on foot or by vehicle so that elderly people can access easily and to keep close connection between facilities. 2. mixed-use development is needed, 3. the type of facility is would be sheltered housing, 4. small scale facility management in urban go to local govern institution or non profit private organization for stability. 5. building layout would rather be better in one building with vertical function separation, and atrium layout which is dominate in Europe and Japan and, offer strong community need to be taken into consideration. 6. the preference of room size by survey and research is 7-9(pyung) for single and 11-17(pyung) for couple, 7. a building of 50 dwelling units or so with 2-3 stories is ideal from a caregiving and management perspective in urban area.
CPTED 기법의 산업보안 적용 가능성에 대한 질적 연구
최진혁 치안정책연구소 2010 치안정책연구 Vol.24 No.1
This study aimed to find the possibility of and primary factors influencing the adaptation of CPTED(Crime Prevention Through Environmental Design) into the filed of industrial security, to investigate the effectiveness of CPTED approaches in preventing economic(or corporate) espionage attempts, and to examine the relationship between CPTED and other crime prevention strategies. This research also tried to investigate the usefulness of CPTED as a measure to enhance the effectiveness of industrial security programs. The researcher in this study mainly used qualitative case study to analyze the data collected during the research. The researcher interviewed 10 professionals in or related to the industrial security compound, utilizing R. Legard's in-depth interviews, a purposive sampling, and the grounded theory approach of Strauss and Corbin. Specifically, the researcher used semi-structured interviews, applied an inductive categorial system for the analysis of collected data, and referred to open, axial and selective coding adapted from the grounded theory. The main participants of this qualitative case study consisted of four security professionals, working either for corporations/banks or at an institute, and six experts--an attorney at law, two professors, a journalist, a police officer, and a government official--related to the industrial security field. The researcher interviewed 10 subjects from August 2009 to April 2010. This study utilized interviewees, literatures, news articles, and other Internet resources relating to the subject of this study for triangulation of data. The research design used for this study was a self-reflective inquiry. The collected data were analyzed using the inductive method--inductive categorial system--for the reflective notes and constant comparison for the interviews. The audio files recorded during each interview were carefully examined to observe commonalities and differences between and/or among participants. The findings during this research are as follows. Above of all, the institutionalization of CPTED into the field of industrial security is feasible and can be a good strategy for both preventing corporate or economic espionage attempts and protecting information and technologies of an enterprise. The broad nature of the CPTED approach allows its useful adaptation into industrial(or corporate) security programs, and the research results indicate that it is quite an effective approach to reducing crime and economic espionage threats to corporations. This research also found the effectiveness of CPTED in preventing corporate or economic espionage attempts, particularly when united with comprehensive physical security programs. This study, in conclusion, suggests that CPTED, for sure, can effectively be adapted into the filed of industrial security, and that CPTED thus is a useful measure to both enhance the effectiveness of industrial security programs in terms of its traditional crime prevention strategies and reduce opportunities of crime as well, as CPTED approaches have done since its birth. Further interdisciplinary and practical research would be urgently required to develop a strategic CPTED-industrial security model in the Korean context.
Variance Reduction 기법을 이용한 시뮬레이션 분석
정진혁,Goulias, Konstadions G. 中央大學校 建設環境硏究所 1999 環境科學硏究 Vol.9 No.2
The randomness of output from the simulation should be treated by the appropriate statistical techniques. Large-scale simulations may require great amounts of computer time and storage, statistical analysis can require significant time and efforts. Sometimes the cost of running simulations and a statistical analysis of the output can be so high that statistical measures by confidence interval may be unacceptably poor. Therefore, simulation applications should use any means possible to increase the simulation's efficiency. One popular way to increase the statistical efficiently, as measured by the variances of the output random variables from simulation, is a variance-reduction technique (VRT). In this research, firstly review the variance reduction techniques. Secondly, among the variance reduction techniques, antithetic variate (AV) technique is applied to a case study to test appropriateness of variance reduction techniques for the popular traffic simulation model, Traf-NETSIM. The results show that AV technique seems to be adoptable to Traf-NETSIM simulation runs because the same number of simulation runs with VRT produces much smaller variances. It readily implies that smaller simulation runs with VRT produce similar confidence ranges to large number of simulation runs without VRT.
노진혁,이병진,조옥자,박시룡 대한피부과학회 2003 大韓皮膚科學會誌 Vol.41 No.7
Angiosarcoma is a rare malignant tumor of endothelial cell origin. Histopathologically, varied differentiation may be observed even within the same tumor. Epithelioid angiosarcoma is one subset of poorly differentiated angiosarcoma which is a rare variant. We report a case of epithelioid angiosarcoma of the scalp in a 59-year-old man. The patient had a painful solitary, 2×3 cm sized, dome-shaped, firm, erythematous to purplish nodule with crust on the vertex of the scalp. Histopathologically, the tumor was chiefly composed of solid sheets of atypical epithelioid cells with prominent eosinophilic cytoplasm, a large vesicular nuclei, and occasional intracytoplasmic vacuoles. Well to moderately differentiated areas with irregular vascular channel-like structures lined by atypical hyperchromatic endothelial cells were also seen in the peripheral areas of the tumor. Immunohistochemically, the tumor cells were positive with CD31 which is sensitive marker of endothelial cell. (Korean J Dermatol 2003;41(7) : 971~973)
해운망 관점에서의 우리나라 철도망체계 구축에 관한 연구
정진혁 中央大學校 建設環境硏究所 1999 環境科學硏究 Vol.10 No.-
The paper proposes the railway network for 21st Century in Korea to provide more efficient and economical freight movements. The transportation systems in Korea have been suffering from the chronic congestion in roadway, the shortage of capacity and network in railway, the limited infrastructures in marine movements, and rapid growth of transportation demands over supplies. To break through the circumstances, the transportation systems in Korea should find egresses in the mear future. Otherwise, a great deal of losses from transportation and logistic systems happen and influence national economic and peoples life. A possible exit can be rebuilding, renovating, and restructuring the trailway systems to move the bulky freights in more efficient manner,. It will lighten the burden in the highway systems and can be a milestone to redefine roles of transportation modes. In this study, research, reports, plans and statistical data have been reviewed and analyzed to identify problems emerging from freight transportation systems in Korea. Based on the reviews, the railway systems for 21st Century is proposed and railroads renovated or built are also recommended to accomplish the systems.