• 한국산학기술학회논문지
• /
• 제17권12호
• /
• pp.686-691
• /
• 2016

용접강구조물에서는 용접비드와 같은 응력집중부가 많이 존재한다. 또한 용접부에서는 용접결함이 발생할 가능성이 많다. 반복적인 피로하중이 응력집중부에 작용하면 응력집중부에서 피로균열이 발생하고, 발생된 균열의 전파에 의해 피로파괴사고를 일으킨다. 따라서 피로파괴사고를 미연에 방지하기 위하여 균열발생수명과 균열전파수명과 같은 피로수명의 파악이 필요하다. 본 연구에서는 피로균열전파특성 연구에 사용되는 컴플라이언스를 도출하였다. 이 컴플라이언스는 피로균열의 자동화 측정에 활용할 수 있다. 본 연구에서는 CT시험편에 대하여 in-house FEM program을 사용하여 컴플라이언스를 계산하였다. 이 계산결과는 저자의 앞선 연구에서 본 프로그램을 사용하여 계산한 J integral의 계산결과와 대비하여 a/W와의 관계를 제시하였다. 그리고 또한 CT시험편 Back Face의 중앙부로부터 위아래 방향의 스트레인 분포에 계산을 실시하였다. 이 분포에서는 중심으로부터 위아래로 갈수록 스트레인이 감소하는 경향을 나타내었다. 이상의 계산과정으로부터 균열진전시험의 자동수행을 위한 컴플라이언스를 얻을 수 있었다. 이것으로부터 CT 시험편의 피로균열진전시험의 자동화에 활용이 가능하게 되었다.

• 한국식품조리과학회지
• /
• 제20권2호
• /
• pp.151-157
• /
• 2004

This study was designed firstly to measure the job satisfaction levels of F＆B (Food ＆ Beverage) personnel in hotels by using JDI (Job Descriptive Index) and secondly to identify the effects of job satisfaction on intention to quit by job type. Of 498 respondents, there were 245 employees in the back of the house (eBOH) and 253 in the front of the house (eFOH). From an analysis on job satisfaction, total JDI, score was 136.57${\pm}$11.48 out of a maximum 210 and the payroll (14.79 out of 21, 70.4%) facet of JDI was the highest job satisfaction followed by co-workers (36.07 out of 54, 66.8%), supervision (35.37 out of 54, 65.5%), promotion (17.45 out of 27, 64.6%) and work itself (32.86 out of 54, 60.8%). In comparison between the job satisfaction of eBOH and eFOH, eFOH perceived significantly higher than eBOH for job itself (p＜.001) and total job satisfaction (p＜.01). No facets of JDI were significant by job level, but work itself (p＜.05), payroll (p＜.05), supervision (p＜.01) and promotion (p＜.05) were significant by work section in eFOH,. In addition, no facets except work itself were significant by either job level or work section in eFOH. Finally, among job satisfaction facets, payroll had a negative effect on intention to quit whereas supervision had a positive effect on it in eBOH. On the other, work itself affected intention to quit positively but promotion affected it negatively. The findings confirmed the necessity for internal marketing focusing on the lower level of job satisfaction facets and indicated that such a focus would improve organizational effectiveness.

• 한국콘텐츠학회논문지
• /
• 제12권5호
• /
• pp.415-430
• /
• 2012

급변하는 경영환경에서 기업의 경쟁우위를 확보하기 위해 우수한 인재의 확보와 혁신의 중요성이 강조되고 있다. 본 연구는 자기효능감, 직무착근도가 혁신행동 및 조직구성원 행동에 어떤 영향을 미치는 지에 대한 연구를 실시하였으며 근무형태별로 영업부서와 영업지원부서 두 개로 집단을 나누어 차이를 분석하였다. 실증분석에 사용된 통계기법은 빈도분석, 신뢰도 분석, 확인적 요인분석, 두 집단의 조절효과를 보기위해 카이스퀘어 검증 및 구조모형을 바탕으로 한 경로분석을 실시하였으며 분석의 수행을 위해 SPSS19.0과 AMOS18.0을 이용하였다. 근무형태를 두 집단으로 분류하여 즉, 영업부서와 영업지원부서에 대한 경로분석의 차이를 알아본 결과 자기효능감과 직무착근도 요인 중 자기조절감과 과업난이도 요인이 혁신행동에 다른 영향을 미치는 것으로 나타났다. 자기효능감과 조직구성원 행동에서도 영업부서와 영업지원부서에 따라 상당히 다른 결과를 나타냈다. 이러한 연구목적을 달성하기 위하여 문헌적 연구와 경로분석을 이용한 실증적 연구를 함께 실시하였으며, 분석결과를 바탕으로 호텔산업이 인적자원관리 방안과 효율성을 높이기 위한 방안을 제시하였다.

• 한국주거학회논문집
• /
• 제21권4호
• /
• pp.139-148
• /
• 2010

This study aims to classify and find the characteristics of the housing floor plan by their spatial organization, the condition of use, the process of changes in Jeonju Hanok Village. To carry out this study, first the 534 in 779 housings in this village are investigated, and finally 55 of them are investigated and analyzed. They are surveyed and investigated from November in 2008 to January in 2010. The followings are as conclusions; The prototype of housing floor plan in this village is consisted of the main room in the middle part with the toimaru (wooden veranda), kitchen and meoribang (the room that is located back or the side of the main room) and kennen-bang (the room that is located the side of main room) in it's house. They are generated and changed on the basis of this type. The floor plans of the housings in Jeonju Hanok Villages are classified and characterized as the type of original floor plan house (original type), that of semi foreign house with the Korean style by the Japanese style or modern style, that of the house for rent a room or two rooms or one family, that of the house which mixed with commercial function and that of etc. They are generated by the social and economic condition of that period. And they will be studied with the life style of residents.

• 신재생에너지
• /
• 제4권2호
• /
• pp.45-51
• /
• 2008

The fuel cell system is environment-friendly and energy efficient system. Especially, the fuel cell cogeneration systems providing heat and electricity to buildings have been developed and applied to a lot of sites in the world to cope with the global warming and $CO_2$ emission problem. This paper presents the result of study on the economic evaluation with super-micro fuel cell (SMFC) cogeneration system by varying the floor area ($132m^2{\sim}331m^2$) of the house, whose system capacity ranges from 0.10 kWe to 0.50 kWe. The electricity demand, heat demand, saved energy cost, and the simple pay-back period have been simulated for the various capacities of fuel cell cogeneration system. As a result, this study suggests the fuel cell system’s capacity decision strategy for a given house area. Contrary to conventional design assumptions, the smaller capacity fuel cell cogeneration system is appropriate for the house of large floor area to defense the progressive electricity tax, and the larger capacity fuel cell cogeneration system is appropriate for the house of small floor area to sell the electricity.

• 한국신재생에너지학회:학술대회논문집
• /
• 한국신재생에너지학회 2008년도 춘계학술대회 논문집
• /
• pp.25-28
• /
• 2008

The fuel cell system is environment-friendly and energy efficient system. Especially, the fuel cell cogeneration systems providing heat and electricity to buildings have been developed and applied to a lot of sites in the world to cope with the global warming and $CO_2$ emission problem. This paper presents the result of study on the economic evaluation with super-micro fuel cell (SMFC) cogeneration system by varying the floor area ($132m^2{\sim}331m^2$) of the house, whose system capacity ranges from 0.10 kWe to 0.50 kWe. The electricity demand, heat demand, saved energy cost, and the simple pay-back period have been simulated for the various capacities of fuel cell cogeneration system. As a result, this study suggests the fuel cell system's capacity decision strategy for a given house area. Contrary to conventional design assumptions, the smaller capacity fuel cell cogeneration system is appropriate for the house of large floor area to defense the progressive electricity tax, and the larger capacity fuel cell cogeneration system is appropriate for the house of small floor area to sell the electricity.

• 한국건축시공학회:학술대회논문집
• /
• 한국건축시공학회 2001년도 학술논문발표회
• /
• pp.130-135
• /
• 2001

In this study, I have researched into the causes of defects in apartment house, The results of this study are listed below. (1) Water leakages which result from land sinking and cracks, results of misuse of back filling method, are the main reason of defects in civil engineering work and architectural work. (2) Inexperience and unwillingness are the main reason of defects in plaster work. (3) In windows work and painting work, the main reasons are lacks of precision construction and efflorescence resulting from outdoor air, respectively. (4) Defects in waterproofing work and electric work result from fault construction by low unit Costs. (5) Equipment work requires uses of standardized construction materials and management, and landscape architecture work requires minimizing human mistakes, for instance, degin carelessness. For the reasons stated above, the causes of defects in apartment house are insufficient construction labors, inferior construction materials, urgent construction process time, and conscientiousless industrialists who only seek after a profit margin.

• 대한임베디드공학회논문지
• /
• 제16권1호
• /
• pp.29-34
• /
• 2021

We developed a pet care robot that can be controlled outdoors. Through the smartphone application, the pet owners can watch the situation in the house and manipulate the robot to make their pet happy. The video data in the house is transmitted to the application through the webcam installed at the house. The robot can not only perform user's command but also do six basic macro action. The obstacle avoidance function using the current sensor can be activated if the user want to use. When the robot hits to something, it moves back and rotates by arbitrary angle, and then moves forward.

• 건축역사연구
• /
• 제31권3호
• /
• pp.41-52
• /
• 2022

This study explains the han-ok. in Gae-sung, which was antique and traditional city. In view of the fact that these were located in Gae-sung in North Korea hence direct investigate is not possible. Since there was no comprehensive study of Gaeseong han-ok, we have no choice but to rely on fragmentary records and memory of Gaeseong people. In accordance from the Japanese colonial era's surveys and sketches as well as how they were illustrated in the novel. Hark back to the peoples' thought of the han-ok years when they ran the survey in 1920s, the results were as follows: First, there are many houses so various classes in Mi-Mang. Jeon Cheo-man's house was a representative example of a rich family in Gae-sung, Jeon Je-seong(Jeon's 2^nd son)'s house was located in Si-jeon(government licensed-markets) near by the South gate. In particular, Jeon Yi-seong(Jeon's 3rd son)'s house was in rural areas. He managed on immense ginseng field and worker's houses. Hae-ju's house was a small house off the track. Second, the outer house is low and the main house is high and neat. Lastly, it was confirmed that it corresponded to sketches recorded by architects, such as neat housekeeping, long stones used for various purposes, invisible flat gates, the appearance of old and old houses and the composition of each room.

• 대한물리치료과학회지
• /
• 제16권3호
• /
• pp.55-66
• /
• 2009

Background: The purpose of this research was to investigate the factors affecting the low back pain of workers in hospital. 214 subjects waking at two general hospitals in Yosu city participated in this survey. Subjects consisted of doctors, nurses, medical engineers, officers and general laborers. The survey data were collected by a written questionnaire which made out by themselves for 25 days, from fourth August to 29th August, 2008. Methods: The questionnaire consisted of four categories, general, occupational, working habitual and the daily living characteristics. The collected data were analyzed by Chi-square test based on the present or absent of low back pain. Results: 1. In the general characteristics, low back pain had no significant relationship to all factors, sex, ago, body mass index, weight and height. 2. In the occupational characteristics, the phase of distribution of low back pain had statistical significant differences in the working hours a week, satisfaction of pay, satisfaction of occupation(p<0.05). However low back pain did not significantly related to the kind of occupation, period of work and degree of stress. 3. In the habitual characteristics, low back pain was significantly influenced by working posture, frequency of using lumbar and heavy material lifting, monotonous repetition of working operation and noise(p<0.05). No significant difference was shown in the factor of convenience of chair. 4. In the daily living characteristics, low back pain shown the significant differences in walking time a day, status of health and smoking pattern(p<0.05). there were, however, no significant differences in the aspect of the kind of house and bed, sleeping attitude, driving, riding time on the vehicle, exercising, frequency of cultural life and drinking alcohol. Conclusion: when I see above resultants totally, it appears a higher incidence caused by working environment rather than living habit and then consequently compared to hospital workers, they also have high incidence like others. In order to reduce incidence of low back pain and enjoy the our life we need to educate ourselves preventing program for low back pain and try to effort for preventing of low back pain on each department and individual.