• 대한토목학회논문집
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• 제32권3D호
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• pp.239-245
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• 2012

건설프로젝트가 대형화 복잡화 전문화 되어감에 따라 전문적인 사업관리의 필요성이 증가하고 있다. 따라서 1996년 이후 국내 CM시장이 점진적으로 확대되고 있다. 이러한 CM시장의 증가세에도 불구하고, 국내 전문가들은 CM 제도와 기반이 부족함을 지적하고 있는 실정이다. 따라서 본 논문은 CM시장 활성화를 위한 인과지도를 제시하였다. 그리고 기초관계 균등단위 모델링을 이용하여 CM 시장 규모를 예측하기 위한 시뮬레이션을 수행하였다. 그 결과 CM관련 제도적 규제가 많을수록 CM시장이 위축되는 양상을 나타났으며, 2015년 이후 건설감리시장을 추월하는 것으로 나타났다. 본 논문은 국내 CM시장의 활성화를 위한 제도개선의 필요성과 개선요인의 인과관계에 따른 CM시장의 변화를 전망하는 자료로 활용될 수 있다. 그리고 향후 CM시장 활성화 요인 중 비제도적 요인의 변화를 기준으로 한 CM시장 활성화 방안연구의 기초자료로 활용될 수 있을 것이다.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회 1998년도 추계학술대회 논문집
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• pp.413-414
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• 1998

This paper presents a real-time Spatial Decision Support System(SDSS) for security camera image monitoring. Other SDSSs are not real-time systems, i.e., they show the images that are already transformed into data format such as virtual reality. In our system, the image is broadcasted in real-time since the purpose of the security camera needs to do it in real-time. With these real-time images, other systems do not add up anything more; the screen just shows the images from the camera. However in our system, we created a motion detection system so that the supervisor(Judge) of a sec.urity monitoring system does not have to pay attention to it constantly. In other words, we created a judge advising system for the supervisor of the security monitoring system. Most of small objects do not need the supervisor's attention since they could be birds, cats, dogs, etc. if they show up in the screen image. In this new system the system only report the unusual change to the supervisor by calculating the motion and size of objects in the screen. Thus the supervisor can be liberated from the 24-hour concentration duty; instead he/she can be only alerted when the real security threat such as a big moving object like an human intruder appears. Thus this system can be called a real-time Spatial DSS. The utility of this system is proved mathematically by using the concept of entropy. In other words, big objects like human intruders increase the entropy of the screen images significantly therefore the supervisor must be alerted. Thus by proving its utility of the system theoretically, we can claim that our new real-time SDSS is superior to others which do not use our technique.hnique.

• 한국산학기술학회논문지
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• 제8권2호
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• pp.189-194
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• 2007

최근 자동차 안전에 대한 수요자의 요구가 증대되면서 용접부에 대한 품질검사방식도 강화되고 있다. 이에 따라 시트구조물의 용접부 비드 형상치수를 육안검사 또는 수동검사에 의존하던 방식에서 전수기록검사에 의한 품질관리가 요구되고 있다. 본 연구에서는 시트프레임 용접부의 품질검사를 위하여 작업자가 용접비드를 측정하면 자동으로 계측되는 시스템을 LabVIEW를 이용하여 개발하였다. 용접부의 비드 폭과 길이에 대한 품질 기준을 입력하여 놓으면 측정 시 측정하고자 하는 대상이 비드길이 인지 폭인지를 자동으로 판단하여 측정되도록 하였으며 측정된 데이터는 포인트별로 저장 기록되어 용접부의 품질기록을 보존토록 하였다. 이러한 시스템을 자동차 시트 용접부에 적용하여 실험하였으며 품질관리 작업효율에 좋은 영향을 주었다.

• 한국도서관정보학회지
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• 제9권
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• pp.145-178
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• 1982

This is a survey of the circulation system for students in college & university libraries in Korea. The survey used a questionnaire with 14 questions on 6 items concerning the various aspects of the circulation system in 82 libraries responded among 85 college & university libraries as of 1981. The survey results discovered many problems needing improvement. The following list describes the measures needed to better the problems found in the survey results of 82 libraries. 1. 67.1% of the libraries shows the restricted volumes loaning less than 2 volumes, and 81.7% of the libraries shows the loan periods less than a week, but it is desirable to extend them, when comparing with the size of holdings and the higher educational system at present. 2. It is desirable that the number of a staff in charge of circulation works places one person per average 75-85 books borrowed a day, when calculating an adequate number of the staff on the basis of the correlation between books borrowed a day and number of the staff. 3. 59.8% of the libraries does not have reserved book system, but it is desirable to take it for increasing reliability about the circulation services. 4. More than half of the libraries takes a method of a public announcement on a notice-board for claims of overdue books, but it is desirable to send a claim notice to the individual in viewpoint of keeping their privacies. 5. More than half of the libraries to take the open access system uses a call slip, but it is desirable not to use it in viewpoint of simplicity and economical efficiency of the charging system, because of demanding the unnecessary records. 6. Most of libraries shows many problems of the charging system, especially in factors of the records and filing system, but it is desirable to improve it on the basis of 4 basic factors of the charging system, that is, simplicity, economical efficiency, promptitude and accuracy.

• 농촌의학ㆍ지역보건
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• 제16권2호
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• pp.179-194
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• 1991

Despite its universal coverage of health insurance, the rural health insurance program(RHIP) stands at the crossroads in Korea. The RHIP has weaknesses in stability of financing, problems of inequities in the provision of health services and has suffered from high cost of running the program. The author has analyzed these problems from the perspective of health insurance policy and presented several options for improvement. First of all, this study urged the importance of a firm Governmental commitment of RHIP with the 50% subsidization of contributions as the Government had promised, instead of the current 40%. This can be justified from the 20% subsidization by the Government for the contributions of private school teachers and their dependents, who belong to richer segments of the population. Second, various cost containment measures ought to be sought curbing the rising demand for medical through strengthening health education and increasing individual responsibility, and tightening the claim review process. Third, this study requires the Government to run a demonstration project on the introduction of case payment system for primary health care. Fourth introducing an income-related cost sharing scheme is another possibility. Reforming the cost sharing formula for large medical expenditures is recommendable for a beginning. This measure can take the form of tax credit for medical expenditures of the poor. Fifth, the degree of financial adjustment among health insurance plans should be levelled up for enhancing stability of RHIP and social solidarity. Sixth, health policy should be redirected toward development of rural health resources and higher priority should be put on relieving difficulties in access to care. Seventh. the insurance plan owned-hospital needs to be developed or provision of health services in the medically underserved areas, and the need of such facilities is particularly acute for geriatric care, rehabilitation and renal dialysis, etc. Eighth, more generous insurance benefits are required of the elderly who are suffering the most : elimination of the maximum 180 days of benefit period and provision of glasses and artificial dentures, etc. Ninth. the economies of scale principle is working for the operating expenses of regional self-employed insurance plan. Thus, measures should be instituted to pursue an optimum size of health insurance plans. Lastly, excessive dependence on exclusion items is an evil so that some radical remedies are urgently required to cut them.

• Journal of Preventive Medicine and Public Health
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• 제42권2호
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• pp.135-142
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• 2009

Objectives : An appropriate sampling strategy for estimating an epidemiologic volume of diabetes has been evaluated through a simulation. Methods : We analyzed about 250 million medical insurance claims data submitted to the Health Insurance Review & Assessment Service with diabetes as principal or subsequent diagnoses, more than or equal to once per year, in 2003. The database was re-constructed to a 'patient-hospital profile' that had 3,676,164 cases, and then to a 'patient profile' that consisted of 2,412,082 observations. The patient profile data was then used to test the validity of a proposed sampling frame and methods of sampling to develop diabetic-related epidemiologic indices. Results : Simulation study showed that a use of a stratified two-stage cluster sampling design with a total sample size of 4,000 will provide an estimate of 57.04%(95% prediction range, 49.83 - 64.24%) for a treatment prescription rate of diabetes. The proposed sampling design consists, at first, stratifying the area of the nation into "metropolitan/city/county" and the types of hospital into "tertiary/secondary/primary/clinic" with a proportion of 5:10:10:75. Hospitals were then randomly selected within the strata as a primary sampling unit, followed by a random selection of patients within the hospitals as a secondly sampling unit. The difference between the estimate and the parameter value was projected to be less than 0.3%. Conclusions : The sampling scheme proposed will be applied to a subsequent nationwide field survey not only for estimating the epidemiologic volume of diabetes but also for assessing the present status of nationwide diabetes control.

• 대한지역사회영양학회지
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• 제8권2호
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• pp.220-230
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• 2003

The purpose of this study was to investigate consumer preferred formats of nutrition labels: the type of nutritional information provided on the labels. A survey was conducted on 222 housewives between the age of 20 and 65 in Daejeon city in 1998, using an interview questionnaire showing illustrated nutritional label formats. Among twelve nutrients and caloric values listed on the nutrition labels, the housewives ranked their interest in the items in the following order of calorie (58.56%), calcium (56.76%), cholesterol (54.05%), protein (39.19%) and vitamin C (36.04%). The majority of the subjects (69.37%) checked labels when they bought milk or dairy products, whereas only 8.11% looked at labels when they bought Ramyon or noodles. Most of the subjects (90.99%) preferred products with labels with nutritional information as compared with products without labels. this was especially so true of the younger individuals and of pc-ople who checked food labels more frequently. The subjects preferred labeling which described the nutrient content per Package (55.41%), sewing size (32.88%) and food weight of 1009 (11.71%) as a standard nit. Generally, they prefer-red a simplified list to a detailed list of the number of nutrients, a figure graph to bar graph in nutrition claim, vertical bar graph to horizontal bar graph showing the nutritional content of foods and a web-type graphic format to a radiation-format when describing the item's percentage of the Korean RDA's nutrient content. The subjects who checked labels frequently especially preferred detailed list, while housewives with job or with unhealthy family members preferred a simplified list and graphic, rather than a numerical display. From this result, it is suggested that providing consumers with more nutrients information in a more easily understood graphic format would encourage the consumers to check nutritional labels. Therefore this should be considered when developing the regulations far nutrition labeling or when educating the Public about nutrition. (Korean J Community Nutrition 8(2) : 220∼230, 2003)

• The Korean Journal of Pain
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• 제34권2호
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• pp.139-155
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• 2021

The quality of subgroup analyses (SGAs) in chronic non-cancer pain trials is uncertain. The purpose of this study was to address this issue. We conducted a comprehensive search in MEDLINE and EMBASE from January 2012 to September 2018 to identify eligible trials. Two pairs of reviewers assessed the quality of the SGAs and the credibility of subgroup claims using the 10 criteria developed by Sun et al. in 2012. The associations between the quality of the SGAs and the studies' characteristics including risk of bias, funding sources, sample size, and the latest impact factor, were assessed using multivariable logistic regression. Our search retrieved 3,401 articles of which 66 were eligible. The total number of SGAs was 177 of which 52 (29.4%) made a subgroup claim. Of these, only 15 (8.5%) were evaluated as being of high quality. Among the 30 SGAs that claimed subgroup effects using an appropriate method of performing interaction tests, the credibility of only 5 were assessed as high. None of the subgroup claims met all the credibility criteria. No significant association was found between the quality of SGAs and the studies' characteristics. The quality of the SGAs performed in chronic pain trials was poor. To enhance the quality of SGAs, scholars should consider the developed criteria when designing and conducting trials, particularly those which need to be specified a priori.

• 보건행정학회지
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• 제1권1호
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• pp.27-41
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• 1991

The purpose of this study is to estimate cesarean section rate in Korea and analyze characteristics of health care institution which affect regional variation in the rate. We have searched vaginal and cesarean section deliveries among Diagnosis Related Group dat based upon insurance claim bills which have been submitted to Korean Insurance Corporation for two years since March, 1985. The results are as follows: 1. Out of all delivery cases of 87,500, cesarean section rate was 16.3% (14,299 cases). 2. Cesarean section rate varied according to size and ownership of health care institutions. In above 6- bed sized hospitals, the rate was at about 20% higher than small sized institutions, but rather in hospitals that have more than 500 beds, it was somewhat low. Classified by the hospital ownership, the rate was low at 18.4% in hospitals of religious organization and highest at private or corporate hospitals. 3. This study shows large regional variation in cesarean section rate; there are two times differences between region with the highest and lowest rate. Strongly related factors in that variation was the ownership of health care institution and urbanization variables. Low level of cesarean section rate in a region is explained by high proportion of delivery cases at institutions of religious organization and at insitutions in county level site. This result shows that apart from medical conditions of patients, indications of cesarean section differs from health care providers, and especially ownership of institution strongly affect them. Cesarean section rate in Korea is supposed to be at high level and development of utilization review programs to keep appropriate cesarean section rate is needed.

• 한국통신학회논문지
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• 제33권8B호
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• pp.636-645
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• 2008

센서 네트워크에 있어서 정보 전송 노드인 근원지의 위치를 악의적 추적자로부터 보호하기 위해 길이가 긴 경로를 통해 단일 메시지를 전송하는 라우팅에서는 전달 지연이 길어지는 단점이 있다. 본 논문에서는 전송 메시지가 사전에 주어진 경우, 근원지 위치를 보호하면서 최소 비용의 단일 경로를 이용하여 이들을 목적지로 전달하는 문제는 NP-complete 임을 보인다. 이러한 양 극단의 절충 방안이라 할 수 있는 경로 당 $\omega$개의 메시지들을 전송하도록 하여 근원지의 위치 보호 능력을 높이면서도 전달 지연을 저감시키는 라우팅 프로토콜 GSLP-$\omega$ (GPSR-based Source Location Privacy with crew size $\omega$)를 제안한다. 평가 기준으로는 목적지와의 최단 경로의 홉 수를 기준으로 정규 안전 기간(NSP: Normalized Safety Period)과 정규 전달 지연(NDL; Normalized Delivery Latency)을 고려한다. 평균 차수(degree)가 8인 노드 50,000개로 구성되는 네트워크 토폴로지 100개를 생성하여 측정한 결과 제안된 GSLP-$\omega$는 GSLP-$\omega$의 초기 버전인 GSLP와 기존의 대표적인 근원지 위치 보호 라우팅 프로토콜인 PR-SP(Phantom Routing - Single Path)보다 더 높은 안전 기간을 보였다. 전달 지연에서는 GSLP-$\omega$가 PR-SP보다 높으나 GSLP 보다는 낮은 것으로 나타났다.