Stock Return Predictability and Global Stock Market Integration

Shin,Jung-soon,Choi,Seung-Doo 경성대학교 산업개발연구소 2011 산업혁신연구 Vol.27 No.1

본 고에서는 재무변수와 경제변수에 의한 한국과 영국, 미국의 전체 주식시장 수익률 예측력을 조사하고 이들 국가들의 자본시장 동조화 현상에 대하여 연구하였다. 단기 금리는 전체 주식시장 수익률을 예측하는 데 중요한 역할을 한다. 배당수익률은 미국과 영국의 주식시장 수익률과 어느 정도 예측력을 가진다. 이익수익률은 세 시장 모두에서 거의 설명력이 없다. 그렇지만 단기 금리만으로는 세 국가 모두에서 주식 수익률을 예측하기 어렵다. 단기 금리와 배당수익률을 동시에 고려할 때 예측력이 가장 높아진다. 그러나 이들 회귀식의 설명력들은 설명력이 매우 낮아서 효율적 시장가설을 기각하는 증거로 받아들이기 어렵다. 한편 미국 관련 변수들은 한국과 영국의 주식수익률예측에 도움이 된다. 영국 관련 변수 역시 미국 시장수익률 예측에 도움이 된다. 이들 시장은 단기적으로 통합되어있지 않으며 특히 한국 시장은 영국과 미국시장과 단기적으로 독립적이다. 그렇지만 전반적으로 이들 3개국 사이에는 오차수정에 의한 장기 균형 관계가 존재하며 기대수익률에 공통된 움직임이 있다는 증거가 있어서 장기적으로 동조화되어 있음을 알 수 있다. 이러한 관계는 표본기간의 후반기인 2000년대에 더욱 두드러지게 나타나서 시장의 균형을 향상 조정속도가 빨라지고 있다

민감도해석을 이용한 다중 쎌 구조형 날개의 최적설계

辛相勳,金斗萬,林慶鎬 한국항공대학교 1991 論文集 Vol.29 No.-

현재 항공기 구조는 Semi-monocoque구조 형식을 택하며, 날개구조에서는 Box Beam형 날개구조를 택한다. 본 연구에서 날개구조 해석은 "Flange는 축하중을 담당하고, 비틀림과 전단력은 Shear web가 담당한다"는 가정에 적합한 "Shear Web Beam 유한요소"라는 유한요소를 사용하여 응력해석을 하였고, 중형 항공기의 날개구조로 많이 사용되는 다중 쎌 구조를 택하여 처짐과 응력의 제한 조건이 있는 상황에서 민감도 해석을 이용하여 설계최적치인 플랜지의 단면적과 웨브의 두께를 구함으로써 Box Beam날개구조물의 무게를 최소화 하였다. This paper presents development of a optimal structural design technique for Multi-Cell Box beam type wing senditivity analysis which is implement into finite element program. Multi-Cell Box Beam type wing of Semi-monocopue structure is analyzed by finite element method with 'Shear Web Beam' finite element. The element consists of a shear panel that is subjected to constant shear flow and four flanges along the four sides of shear panel. Flanges are subjected to linearly varying axial force. Most nonlinear programming technique for structural optimization require carring out the design sensitivity analysis for objective function and constraints i.e. computing the gradients of displacement, stress with respect to design variables. The flange area and web thickness are determined that minimized the total weight of the Multi-Cell Box Beam type wing using developed technique and computer program.

천정 크레인 시스템의 위치제어와 진동저감에 관한 연구

신승권,이한석,조영호,안두수 成均館大學校 科學技術硏究所 1998 論文集 Vol.49 No.1

Overhead crane systems are widely used for material transportation in many industrial fields. However, undesired swing can always be found during the moving progress, especially at the end location of the transport. The swing may increase the carrying time and cause safety problems. In order to achieve the target position, this paper used a PD controller and used a fuzzy controller to reduce swing angles found during the moving progress. The performance of controller was verified through the experimental results and the simulation results by MATLAB.

우리나라 流通構造의 一考察

申斗休 단국대학교 경영대학원 1989 經院論叢(壇國大學校) Vol.9 No.-

嶺東ㆍ太白地區 炭鑛會社의 勞使協力에 관한 實態와 그 改善方案

申斗休,姜熙甲,白喆鉉 관동대학교 1976 關大論文集 Vol.4 No.1

Korea has made great progress in anthracite producing capacity since past decade. Neverthless its promotion is critically desired and has become one of the great concerns of the government in carrying out the present national economic development plan because of shortage in our energy resources. Increase of anthracite production results from cooperation between management and labor instead of useless and excessive labor disputes. In this article has been dealt with real conditions and improvement ways of Labor-Management cooperation of coal mining corporations in Yong Dong Area only. To point out some of them to be considered and examined, are as follows. Firstly, in Collective Bargaining, labor union's organization being prerequisite to it should be induced to all the coal mining enterprise, its organization activity should be trained and the operative labor union law needs to be amended so that employees may have the right to reqire nationwide collective bargainning. Furthermore, it is desirable to adopt minimum wage system and widen span of collective barginning to workers' participation in management. Secondly, in Consultation of Labor-Management, even the labor union unformed enterprise should have the duty to organize a consultation instrument between employers and empoyees, moreover the existing consultation meeting should be strengthened effectively to actualize workers' participation in management. Lastly, in view of social welfare for workers. prompt enforcement of minimum wage system, investment inducement to welfare facilities by the government and the enterprise concerned, and widening application of existing workers' compensation insurance will be needed. The true labor-management harmony is contribute not only to increase of coal production capacity, but to just distribution of business performance through democratization of industry.

廣告媒體에 관한 硏究

申斗休 단국대학교 경영대학원 1988 經院論叢(壇國大學校) Vol.8 No.-

Taxol 합성에 관한 연구 Ⅰ : O-(tert-Butyldiphenylsily1)-cis-5-methyl-4-hepten-6-yn-1-ol의 합성 Synthesis of O-(tert-Butyldiphenylsily1)-cis-5-methyl-4-hepten-6-yn-1-ol

신동수,박두천,주우홍,김형국 國立 昌原大學校 基礎科學硏究所 1994 基礎科學硏究所論文集 Vol.6 No.-

O-(tert-Butyldiphenylsily1)-cis-5-methyl-4-hepten-6-yn-1-ol, an intermediate in the synthesis of taxol, was efficiently synthesized from 3-methyl-2-penten-4-yn-1-ol by sequential alcohol/bromide interchange [NBS, PPh_(3), CH_(2)Cl_(2), -30℃, 82%], displacement with the lithium salt of tert-butylacetate [LDA, THF, -78 to 23℃, 84%], LAH reduction, and silylation [tBuPhSiCl, imidazole, CH_(2)Cl_(2), 45℃, 88%].

한반도 지진원의 특성을 고려한 응답스펙트럼

신재철,이두한,정인수,이창원 충남대학교 산업기술연구소 2003 산업기술연구논문집 Vol.18 No.1

The response spectrum is the best representation of earthquake for engineering purposes because it takes account of the natural frequencies of structures. In general PGA(Peak Ground Acceleration) is used to scale the standard response spectrum. But it is likely to lead to serious error, because the shapes of response spectra depend on magnitude, source distance and site conditions. Therefore, theoretical prediction called stochastic source models have been used for predicting ground motion and response spectrum by magnitude and distance in regions where strong ground motion data are sparse. The deterministic method that PGA scales the design spectrum is prescribed in Korea, so unexpected error can be occured. Therefore the stochastic simulation method is employed to predict ground motion and to estimate the response spectrum for comparison with the design spectrum in this study. Stochastic source model that the shape is controlled by two corner frequency is computed and verified by comparing with Gyeongju earthquake using site-amplification(Boor & Joyner, 1997) to consider site condition. And it is proved how much this difference has an effect on response of structure such as steel box girder bridge.

스포츠의 價値와 企業의 마케팅

申斗休,申宰休 단국대학교 산업연구소 1997 산업연구 Vol.20 No.-

The purpose of this paper is to study the meaning of sports marketing which has recently emerged as new marketing method. This paper also aims at reaearching how values of sports act as favorable leverage to firms. As sports markets develop and mutate, the sports marketing has become a new marketing methode for firms and sports related organizations to achieve their management goals. It can be classified as the marketing of sports and the marketing with sports. The values of sports are similar to what firms pursue. To achieve their goals through sports, Korean firms should reduce their dependence on simple media exposure and establish longterm strategies which intergrate unique and various characteristics of sports.

綜合病院 一般病棟에 入院한 精神科 患者에 關한 考察

辛英敏,趙斗英 大韓神經精神醫學會 1982 신경정신의학 Vol.21 No.3

Among general hosditals in Korea only a few use general wards for psychiatric inpatients while most use the traditional psychiatric wards only. The author studied clinical characteristics and management problems of psychiatic inpatients admitted to the general ward, based on findings of 61 psychiatric inpatients admitted to one 28beds general ward at the Seoul National University Hospital from July 1, 1980 to June 30, 1981. Research materials were obtained from the hospital records, personal semi-structured interviews with and answer sheets to questionaires from 5 psychiatric residents, 8 medical residents and 6 non-psychiatric nurses who were assigned to that specificgeneral ward in the same period, and questionaires from 24 psychiatric residents at other institutions. Results were as follows: 1. Average bed occupancy of psychiatric patients in the general ward was lower than expected(5.8%), because of preference of traditional psychiatric wards by the psychiatrists and lack of availability of the beds in intense competition between several medical specialties. 2. Seventy five percents of psychiatric inpatients admitted to the general ward belonged to the category of neuroses. Psychiatric inpatients in the general ward stayed short(12.5 days in average, in comparison to 18.6 days for the neurotics in the psychiatric ward and to 39 days for all the inpatients in psychiatric wards in the same period). Discharge rate against medical advice was unexpectedly high as 30%. 3. All of psychiatric residents from the Seoul National University Hospital and other institutions showed negativistic and skeptical views to the policy of admitting patients to the general ward, for lack of psychiatric treatment facilities in the general ward such as interview rooms, occupational tberapy rooms and day rooms, intensification of anxiety from the itneraction between psychiatric and medico-surgical patients in the same rooms, lack of confidentiality, unsatisfactory nursing care by less motivated non-psychiatric nursing staffs, and greater chance of accidents such as violence, suicide and elopement. Interestingly all medical residents were in favor of accepting psychiatric patients in the general ward. 4. To improve psychiatric care in the general ward quantitavely and qualitatively, the authors suggested regularly scheduled didactic meetings for the non-psychiatric ward nurses, fixed assignment of rooms for the psychiatric patients and enforced use of various facilities in the psychiatric wards for the general inpatients during daytime.