• 한국음향학회지
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• 제33권4호
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• pp.232-237
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• 2014

함정의 수동소나는 여러 개의 지향성과 무지향성 센서로 구성되어 있다. 함정 소나에 수신되는 음향 신호를 모의할 때, 일반적으로 임의의 소음원으로부터 소나에 장착된 모든 센서간의 음파 전달 모델링이 필요하다. 그러나 모든 센서에 대한 통합적인 계산은 시간이 많이 소모되며 소나 시뮬레이터의 성능을 저하시킨다. 본 연구에서는 음선 정보가 알려진 기준 센서가 존재한다고 할 때 그에 인접한 센서 위치에서의 소나 신호를 추정하는 근사적인 방법을 제안한다. 이 방법은 음선의 도달 시간에 대한 테일러 급수를 이용하여 개발되었으며 소나 개구면에 대한 Fraunhofer와 Fresnel 근사와 유사하다. 제안된 기법을 검증하기 위해 수동 소나에 대해 여러 수치실험이 수행되었다. 2차 항까지 테일러 근사를 적용한 근사법이 보다 우수한 결과를 보였다. 추가적으로 각각의 근사 해에 대한 오차 한계가 제시되었다.

• 지역사회간호학회지
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• 제19권2호
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• pp.157-166
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• 2008

This study was conducted with whole home care nurses nationwide to provide secondary analyzed data to understand on their usage of medical equipments and their need of them for a month. This study found that treatments given by home care nurses were nelaton catheterization, bladder washing/urethral washing, newborn care, exchange and care for nasogastric tube and suction in that order of frequency. Second, instruments and equipments used for home care were reported to be stethoscope, patient monitor, blood pressure measuring equipment, air flotation mattresses, beds for patients, mattresses, suctioning device sets, enteral feeding equipment and dressing set in that oder of frequency. Moreover, need assessment of medical instruments and equipments showed renal dialysis was most needed and patient monitor, blood pressure measuring equipment, enteral feeding equipment, solution and other supplies for renal dialysis and beds for patient were necessary in that order. In conclusion, the results of this study investigating special treatments and medical instruments and equipments used for home care patients and analyzing patients' need, were expected to be useful for expansion of application of long-term care insurance for the elderly and health insurance as well as for quality control of home care and development of medial instruments and equipments used at home.

• 한국유기농업학회지
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• 제25권4호
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• pp.663-677
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• 2017

As Korean food service franchise companies sought to advance into around 2,000 new foreign markets, the importance of global management was emphasized. They intensively expanded into Chinese and American markets in 2015 and these two markets account for approximately 40% of total food service franchise companies in foreign countries. Although Japan has huge franchise market, Korean food service franchise companies in Japan only account for 5% of total franchise companies in Asian countries. The purpose of this study is to analyze the relationship between food service franchise selection factors, brand loyalty, and revisit intention of Japanese consumers using Korean food service franchise companies in Japanese food service market, and based on the analysis results, draw the implications for the expansion of Korean food service franchise companies into the Japanese market. Food service franchise selection factors is defined as service and cleanliness, taste, safety and reliability, cost and convenience, and professionalism. The study results can be summarized as follows. First, analysis was performed to identify the effects of food service franchise selection factors on the brand loyalty, it showed that five food service franchise selection factors including professionalism, service and cleanliness, cost and convenience had positive (+) effects on the brand loyalty. One of the most important factors influencing the brand loyalty is professionalism. In order to raise food service franchise's professionalism, it is necessary for the food service franchise companies to establish stronger strategies containing professional operation systems and services compared to general restaurants. Second, analysis was performed to identify the effects of food service franchise selection factors on revisit intention, five food service franchise selection factors, service and cleanliness, safety and reliability, and cost and convenience had positive (+) effects on revisit intention. One of the most important factors influencing revisit intention is safety and reliability. Thus, in order to raise safety and reliability it is important to form trust with consumers by properly utilizing systems of food hygiene and food safety accreditation.

• 대한조선학회지
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• 제27권4호
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• pp.3-14
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• 1990

해상에 계류된 부유체에 좁은 폭의 스펙트럼을 갖는 파가 입사하게 되면 부유체는 두 가지의 대조적인 주기를 갖고 운동을 한다. 이 운동중 장주기 성분의 주기는 계류된 부유체의 수평방향 고유주기와 같은 정도의 크기여서 유발되는 대진폭 수평 변위는 계류삭에 심각한 응력을 발생시키므로 이에 대한 해석이 필요하다. 본 연구에서는 다척도전개기법(Multiple-Scale Expansion Method)을 시간과 길이에 적용하여 부유체의 운동은 선형 1차 조화 문제와 선형 장주기 문제의 2가지 선형 문제로 표현될 수 있음을 보였다. 따라서 임의 형상을 지닌 3차원 부유체의 대진폭 표류 운동은 2차 포텐셜문제를 풀지않고 해석될 수 있음을 입증하였다. 아울러 장주기 표류운동에 수반되어 장파가 발생함을 보였으며 장주기 운동과 관련되는 감쇠력에 대해서도 고찰하였다.

• International Journal of Ocean System Engineering
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• 제2권2호
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• pp.116-138
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• 2012

As in the other fields of mechanics, analytical methods represent an important analysis tool in marine hydrodynamics. The analytical approach is interesting for different reasons : it gives reference results for numerical codes verification, it gives physical insight into some complicated problems, it can be used as a simplified predesign tool, etc. This approach is of course limited to some simplified geometries (cylinders, spheres, ...), and only the case of one or more cylinders, truncated or not, will be considered here. Presented methods are basically eigenfunction expansions whose complexity depends on the boundary conditions. The hydrodynamic boundary value problem (BVP) is formulated within the usual assumptions of potential flow and is additionally simplified by the perturbation method. By using this approach, the highly nonlinear problem decomposes into its linear part and the higher order (second, third, ...) corrections. Also, periodicity is assumed so that the time dependence can be factorized i.e. the frequency domain formulation is adopted. As far as free surface flows are concerned, only cases without or with small forward speed are sufficiently simple to be solved semi-analytically. The problem of the floating body advancing in waves with arbitrary forward speed is far more complicated. These remarks are also valid for the general numerical methods where the case of arbitrary forward speed, even linearized, is still too difficult from numerical point of view, and "it is fair to say that there exists at present no general practical numerical method for the wave resistance problem" [9], and even less for the general seakeeping problem. We note also that, in the case of bluff bodies like cylinders, the assumptions of the potential flow are justified only if the forward speed is less than the product of wave amplitude with wave frequency.

• 헤리티지:역사와 과학
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• 제36권
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• pp.299-312
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• 2003

Gangneung Danoje does not only have the longest history but also is the largest folk festival in Korea. However, during its long history Gangneung Danoje has not always been the way as it is today. As records reveal, since the Chosun dynasty and through Japanese rule, it has gone through numerous variations and registration processes in order to become a national designated major intangible cultural asset. Especially after it has been appointed as a national major intangible cultural asset Gangneung Danoje has under gone through variety of transformations. First of the few changes is the citizen-lead characteristic. As Gangneung Cultulral Center took charge of Danoje this trait has become prominent. Hereby Chosun dynasty's government lead system has transformed into a civilian lead festival. Second alteration is the enormous scale of expansion and the variations of the characteristic of the festival because of it. Dano event has increased annually from 12 events in 1974 to 58 events by 1999. As the scale of Danoje enlarged the promoters found solutions by providing diversified events in order to satisfy peoples' various aspirations from the festival. However this solution lead to a diversion - from participating festival to a spectating festival. And the last change that occurred is the awareness of the need to develop Danoje into an international festival. This is rather a desire from the government than of the people. In 1994, Korea visiting year as an opportunity this consciousness grew active. For instance, the invitation of mass foreign folk performance in 1999 seems to conform to this policy. The intention to make Gangneung Danoje not only to represent Gangneung but also to represent Korea's folk event can be witnessed. As we enter 21st Century this inclination for international festival has strengthened. Gangneung government has shown enthusiasm to find the future of Danoje by inviting external service corps to assess Danoje. The current inclination appears to be increase its value as an international festival through UNESCO cultural property registration and having this as a foundation make Danoje become an international cultural tourist product. The judgment of this will be made after Gangneung International Folklore Festival 2004.

• 통상정보연구
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• 제13권1호
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• pp.145-175
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• 2011

본 연구의 목적은 학술논문, 정책보고서 등의 자료와 광주광역시, 전라남도 등의 홈페이지를 통해 수집된 자료들을 활용하여 광주 전남지역의 FDI 현황과 장애요인을 분석하고 이를 토대로 광주 전남지역의 FDI 유치전략을 수립하는 데 있다. 분석 결과 제시된 광주 전남의 FDI 유치전략은 다음과 같다. 첫째, 중앙정부의 지역산업정책 방향에 부합하는 FDI 유치전략을 수립하여 적극 추진해야 한다. 둘째, FDI 유치 전담인력에 대한 지속적인 역량 강화를 통해 FDI 유치의 극대화를 추구해야 한다. 셋째, 외국인투자기업 유치 종합지원체계 구축을 통해 효율적인 FDI 유치가 이루어지도록 노력해야 한다. 넷째, 외국인투자기업의 파급효과에 따른 차등인센티브제 도입도 FDI의 효율적인 유치를 위해 고려할 만하다. 다섯째, 기존 외국인기업의 투자확대를 유도하기 위해 이미 투자한 외국인기업에 대한 지속적인 관리와 지원에도 관심을 기울여야 한다. 마지막으로 지속적인 FDI를 유치하기 위해 부정적인 지역 이미지와 정주환경을 개선시켜 나가야 한다.

• 유통과학연구
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• 제14권5호
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• pp.91-96
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• 2016

Purpose - Although various studies have been conducted on the stress of service employees, there are still lack of studies regarding job stress and job satisfaction of call center workers. Especially there are quite few studies on the job stress according to employment type. This study focused on job stress and job satisfaction for call center employees and the correlation between the two factors and aimed to provide basic materials for seeking for the plans to reduce job stress and improve job satisfaction. Research design, data, and methodology - Frequency, percentage, and mean value were calculated through descriptive statistics in order to find out demographic characteristics, level of job stress, and job satisfaction. Differences in job stress according to employment type were calculated by using one-way ANOVA. Correlation between job stress and job satisfaction were identified through empirical analysis with Pearson's correlation coefficient. 150 materials were used for final analysis. The collected materials were analyzed to get statistics by using SPSS 20. Results - First, as for the job stress of call center workers, overall mean value was 2.54 in 4-point scales. Among the six sub-factors, job demands had the highest score, which was 2.67. Second, as for the job stress according to employment type, others showed higher score than mean value followed by contract job and full-time job in that order, in terms of job insecurity and organizational system. In terms of inappropriate remuneration, contract job showed higher score than mean value followed by others and full-time job. Third, as for the satisfaction with job, the mean value was 2.37 in 4-point scale and "very much satisfied" was only 3.3%. Lastly, in terms of job stress and job satisfaction, all sub-factors except for job demands showed significant correlation. The more job stress increased, the more job satisfaction decreased. Conclusions - First, as a result of analyzing job stress according to the employment type of call center workers, job stress increased more when the employment type was not full-time. Therefore, it was assumed that self-rescue efforts should be followed for effective employment management of call center business where contract employment takes most part as well as efforts to transfer them to full-time job. Second, decrease in job satisfaction of call center workers may affect the performance of an organization as well as service quality of the company providing the service. Therefore, various supports are required to decrease job stress and increase job satisfaction for call center workers through the expansion of rest area or break time. Third, I could recognize that there were lack of academic research on call center business in the whole service industry. Therefore, further research should be conducted more actively in the future. In particular, this study has special significance in the aspect that there were few studies on the job stress of call center workers according to employment type.

• 대한예방한의학회지
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• 제4권2호
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• pp.1-24
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• 2000

This study was conducted to examine utilization patterns and determinants of oriental medical services. Data were collected from 545 residents in Taegu city The results of this study are summarized as follows 1) 37.8% of subjects used oriental medical services in the past year. Especially, the female, the ages of 50 and 60 over, the single. low-educated. high-income class, white-collar class, medical insured tended to use more oriental medical services than another groups. 2) 46.7% of users of oriental medical services reported that number of visits in the past year was 2 - 5 times 37 1% of them was 1 times, and 4.5% over 10 times. 3) According to the reasons to choose the oriental medical facilities, most was 'on their own judgement'(48.8%) and 'by the advice of relatives and friends'(42.0%) Regarding to the objectives of using oriental medicine, 68.3% was 'treatment', 31.7% 'health counselling and promotion'. And among diseases of users, diseases of musculo-skeletal system was the highest(54.5%). 4) 57.9% of oriental medical services users had experience of utilizing western medicine on the same diseases. Among peoples with experiencing western medicine on the same diseases. 54.4% received oriental medical services 'in addition to western medicine', 45.6%'in place of western medicine 'And 41.2% of using both services reported that they had difficulty in deciding to choose the type of services -oriental medical services or western medicine-for their diseases. 37.3% of them answered that 'providing relevant information' was the most desirable measure to solve this problem, 27.3% 'establishment of effective referral system between oriental and western medical facilities '23.6% 'cooperative medical treatment systems in the same facilities', 11.8%'integration of oriental medicine into western medicine 5) According to the satisfaction level with each items of oriental medical services, the respondents had positive views on efficacy, kindness, and side-effects. They, however, had negative view on the cost of oriental medical services. 6) In regarding to the priority of improvement of oriental medical system,'expansion of insurance benefit package 'ranked first. 'expansion of insurance benefit Package 'ranked second, 'improvement of scientific methods and diagnostic technique 'third, and 'safety of herbal medicine' fourth in order. 7) The significant factors influencing the utilization of oriental medical services were kindness of oriental medical practitioners, efficacy , travel time, age To be brief, utilization rate of oriental medical services in urban area generally tends to be high. There, however, have been various barriers to limit oriental medical services, such as incomplete benefit package of oriental medical insurance and lack of coordination and referral system between oriental and western medical services, lack of scientific diagnostic procedures, high price etc . For the development of oriental medical services, Much attention to remove these limiting factors should be placed. In addition, kindness of oriental medical practitioners , which is expected to be more important factor in the consumer - focused health care environment than ever, should be kept high consistently. Since this study was conducted for specific residents of an urban city. further research including more sampling in different urban areas should be required to generalize the results of the study.

• 대한환경공학회지
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• 제31권5호
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• pp.358-363
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• 2009

유역관리 계획이 하천 수질에 미치는 영향을 분석하기 위하여 HSPF (Hydrological Simulation Program-Fortran) 모델을 경안천에 적용하였다. BASINS 3.1 GIS 프로그램에 DEM (Digital Elevation Model), 토지이용도, 하천도, 환경기초시설 등을 입력하여 경안천 유역을 총 57개 소유역으로 구분하고 모델 입력 자료를 산출하였다. 먼저 관측된 기상 및 하천 수량 자료를 이용하여 수문 모델의 타당성을 확인한 후 수질 모델을 보정하고 검증하였다. 적용한 수질은 수온, DO, BOD, $NO_3-N$, $NH_3-N$, Org-N, TN 그리고 TP이며, 대부분의 경우 측정치와 예측치가 적절히 일치하였다. 보정 및 검증 완료된 모델을 활용하여 소유역의 수질관리 방안에 따른 경안천 본류의 수질개선 효과를 분석하였다. 적용한 시나리오는 세 가지로, 첫째, 유역관리 활동을 통한 지천 수질개선, 둘째, 환경기초시설의 확충과 처리수질 향상, 그리고 셋째, 이 두 가지를 동시에 적용하는 것이다. 예측결과에 따르면 환경기초시설 확충과 처리수질 향상이 유역관리를 통한 지천 수질개선보다 효과적인 것으로 나타났다. 경안천이 만족할 만한 수질로 개선되기 위해서는 두 가지 방안이 모두 적용되어야 하는 것으로 나타났다.