차량속도에 따른 연성 포장의 최대인장변형률에 관한 연구

조명환,김낙석,최호근,서영국,Jo,Myoung-Hwan,Kim,Nak-Seok,Choi,Ho-Geun,Seo,Young-Guk 한국방재학회 2008 한국방재학회 학술발표대회논문집 Vol.2008 No.1

This study presents a viscoelastic characterization of flexible pavement subjected to moving loads. A series of field tests have been conducted on three pavement sections (A2, A5, and A8) at the Korea Expressway Corporation (KEC) test road. The effect of vehicle speed on the responses of each test section was investigated at three speeds: 25km/hr, 50km/hr, and 80km/hr. During the test, both longitudinal and lateral strains were measured at the bottom of asphalt layers and in-situ measurements were compared with the results of finite element (FE) analyses. A commercial FE package was used to model each test section and a step loading approximation has been adopted to simulate the effect a moving vehicle. Field responses reveal the strain anisotropy (i.e., discrepancy between longitudinal and lateral strains) and the amplitude of strain normally decreases as the vehicle speed increases. In most cases, lateral strain was smaller than the longitudinal strain, and strain reduction was more significant in lateral direction.

해양관관의 활성화 전략

조명환 한국지역사회연구소 2005 지역사회 Vol.49 No.-

“붉은악마 현상에서 배워야 할 학회활동”

曺明煥 한국관광레저학회 2002 관광레저연구 Vol.14 No.1

태권도의 운동상해에 관한 조사 연구 : 대학선수들을 중심으로

조명환,이종희,장완성 경희대학교 체육대학 한국체육과학연구소 2002 體育學論文集 Vol.30 No.-

Taekwondo is one of the most popular sports in korea and new olympic regulation match and a contact sport associated with a large number of injuries. In the present study, taekwondo athletes injuries during training and competitions was investigated via questionnaire. Taekwondo athletes in the universities of Seoul and the metropolitan area in Korea were observed prospectively for one year for acute injuries during training and competitions (n=428). The most time of injuries occurrence are during main exercise and practice. The most injuries occurred by attack or return kick. Contusion(23.4%) and myalgia(23.4%) were the most common type of injuries and the lower extremity was the most commonly injured area(50.6%). The defense type athletes get injured more then the offensive type athletes and they were more injured during return kick and defense than offensive. In men athletes, who has more careers are more get injuries and in women athletes, who has more practice times in everyday are more get injured. The most of ankle(94.6%) and toe(89.6%) injuries were occurred in men athletes. Base on the results of present study, it is suggested that using the protectors and more aggressive attitude are suggestions to reduce injuries.

成熟社會에 있어서 餘暇의 問題

曺明煥 新羅大學校 1985 論文集 Vol.18 No.-

The causes of increasing the leisure which is considered as a symbol of the matured society can be described in various ways. They are generally composed of the increase and centralized in population, in dustrializatlon, urbanization, the promotlon of educational and cultural level etc. In addition to these causes, there are other concrete one's, the extension of average span of human life the shortening of working time, the development of transportation vehecles and increase of disposal income. The difficult problem which we will confront in the approaching matured society so that we don't understand the meaning of leisure which is naturally produced in the course of changing social environments. We must, therefore, capture the characteristics of modern leisure preferences and leisure behaviors in relation to this problem, the leisure development center in Japan declared that the modern leisure society contains the following four characteristics; (1) one takes a greater interest in the objects near him. (2) one would like to plan to make use of spare time. (3) one tends to get excited in the leisure behavior. (4) one has a strong tendency for wasting time. The prospects for the changing of peoples time, expenditure, the expectation of leisure are in support of the above declaration. Therefore, the future matured society will strongly take up the leisure pattern. Conclusively, our country should also attempt to research people's leisure pattern to stabilize the leisure system, and to provide people with the right view to the leisure. In addition, it is necessary to develop the leisure utilization, to enlarge the leisure space, and to centralize and actualize the leisure policy.

觀光호텔經營의 체인화에 관한 硏究

曺明喚 新羅大學校 1984 論文集 Vol.16 No.-

The tourism in korea has been fostered and promoted by the government as a part of the national economic development plan. The hotel business which is the backbone of the tourism in korea has also been extended. however, the hotel management techniques in korea is still subject to backwardness as compard to that of the western countries. It is acknowledged, therefore, that an introduction or an application of the chain operation system is prerequisite for and effective future hotel management. This paper attempts to apply the chain operation system for the tourist hotel management in Korea. To achieve this purpose, this paper has revealed through the positive analysis of a balance sheet and a statement of profit and loss on the both part of the chain operation hotels and the non-chain operation ones. Based on the controversial point as mentioned above some measures have been suggested as in the following: 1. The effect on the cost down could be anticipated through the economic of scale by means of beconing a member of the chain operation tourist hotels in korea. 2. The members are readily advised by the professional managers of an international chain operation tourist hotel, because the charater of the combined industries has already heen involved in the tourist hotel business. 3. Publicity and advertisement in differment localities can be exuviated since the international chain operation tourist hotels have their own respective network which is very extensive and farreaching. 4. Fund raising would be so easy and simple when its appropriateness has been comfirmed by means of analysis through the business econometrics techniques of the western countries.

서어비스製品 購買行動에 있어서 消費者 關與에 관한 實證的 考察

曺明煥 新羅大學校 1987 論文集 Vol.22 No.-

The motivation for the study of the involvement has consisted in more precise prediction of consumers' behavior through the observance of people's attitude formation and attitude change. The variable of involvement it self, as an independent variable, has demonstrated a higher forecasting potential than any other variables, which has made the significance of the study greater. The study on the involvement started 1940s in social psychology and since mid-1960s has also been treated in the area of marketing in terms of consumer behavior. However, the concept of involvement has been defined in a number of ways without a generally-accepted one, and some definite effects the involvement is conceived to exert have not been founded yet. Thus, such facts being taken into account, theoretical study and an empirical research have been done in this paper as an approach to better understanding of the iovolvement. When being categorized into goods and services, five items of each segment have been selected and employed in the research: perfume, detergent, jeans, music album, and facial tissue in the goods and travel, drycleaning, watching of sports game, eating away from home and beauty in services. As a result of the research, three among four hypotheses established; that is 1) more psychologically oriented services than goods. 2) stronger brand loyalty to the services, and 3) more variety of brand attributions of the services, have been accepted, whereas the hypothesis of higher degree of store information, information sought, and trial purchase, has been rejected. Accordingly, some aspects which marketers of service ?? to consideration in establishing strategies of marketing a number of different sorts of the services are as follows: 1) focus consumers' psychological aspect in advertising; 2) acceleration of the product innovation to provide current customers with a variety of the services. The limits I agree in relation to the empirical research are somewhat unsuitableness to be found in the process of selecting perfume and watching of sports game in the services, and low credibility due to the only ANOVA and FREOUENCIES employed in the demonstrating methods. Nevertheless, this paper purposits to make some contribution to the establishment of more rational marketing strategy in service sector, with the improvement of above mentioned limits.

자연순환형 수관식 보일러의 급수온도 및 운전 압력의 변화에 따른 수순환 및 증기 용량 특성에 관한 연구 ( Study on the Water Circulation and Steam Generation Characteristics of the Natural Circulation Water Tube Boilers for Different Feed Water Temperatures and Operating Pressures )

조명환,천석현,승삼선,김태국 대한기계학회 1998 대한기계학회 춘추학술대회 Vol.- No.-

단층 파라미터에 따른 확률론적 지진해일 재해곡선의 민감도 분석

조명환,김건형,윤성범 한국해안,해양공학회 2019 한국해안해양공학회 논문집 Vol.31 No.6

Logic trees for probabilistic tsunami hazard assessment include numerous variables to take various uncertainty on earthquake generation into consideration. Results from the hazard assessment vary in different way as more variables are considered in the logic tree. This study is conducted to estimate the effects of various scaling laws and fault parameters on tsunami hazard at the nearshore of Busan. Active fault parameters, such as strike angle, dip angle and asperity, are adjusted in the modelling of tsunami propagation, and the numerical results are used in the sensitivity analysis. The influence of strike angle to tsunami hazard is not as much significant as it is expected, instead, dip angle and asperity show a considerable impact to tsunami hazard assessment. It is shown that the dip angle and the asperity which determine the initial wave form are more important than the strike angle for the assessment of tsunami hazard in the East Sea. 확률론적 지진해일 재해도 평가를 위한 로직트리는 지진발생 패턴의 다양성을 고려하기 위해 많은 변수를 고려하여 구성된다. 고려되는 변수가 많아질수록 재해도 평가 결과는 다양한 패턴으로 변화한다. 본 연구에서는 로 직트리에 제시되어 있는 다양한 단층 파라미터 변수와 스케일링 규칙이 부산 근해에서의 지진해일 재해도에 미치는 영향을 평가하였다. 로직트리에 제시된 변수 중 주향각, 경사각 및 단층변위분포 변수의 값을 변화시켜가며 지진해 일 전파모의를 수행하고, 그 결과를 이용하여 민감도 분석을 수행하였다. 그 결과 주향각 변수가 재해도 평가 결과 에 미치는 영향은 예상보다 크지 않은 반면, 초기수면의 공간적 분포에 영향을 줄 수 있는 경사각과 단층변위분포의 영향이 크게 나타났다. 이는 주향각보다는 초기수면의 형상을 결정하는 경사각과 단층변위의 공간분포가 동해 지진 해일의 재해도 평가에서 중요인자임을 보여준다.

대학생 성(性)문화 인식에 관한 연구

조명환 東亞大學校 學生生活硏究所 2004 學生硏究 Vol.32 No.-