• 보건행정학회지
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• 제19권3호
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• pp.109-124
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• 2009

Background: This study aimed to examine whether cases of punishing false claimants threat general physicians to check their medical cost claims with care to avoid being suspected, and identify empirically general deterrence effects of the on-site investigation system in the Korean National Health Insurance. Methods: 800 clinics were selected among a total of 15,443 clinics that had no experience of on-site investigation until June 2007 using a stratified proportional systematic sampling method. We conducted logistic multiple regression to examine the association between factors related to provider's perception of on-site investigation and high level of perceived deterrence referring to fear of punishment after adjusting provider's service experiences and general characteristics. Results: The probability of high perceived deterrence was higher 1.7 times (CI: 1.13-2.56), 2.73 times (CI: 1.68-4.45) each among clinics exchanging the information once or more per year or once or more for 2-3 months than among clinics no exchanging the information about on-site investigation. Also, the probability of high perceived deterrence was higher 2.27 times (CI: 1.28-4.45) among clinics that knows more than 3 health care institutions having experienced an on-site investigation than among clinics knowing no case. Conclusion: A clinic knowing more punishment cases by onsite investigation and exchanging more frequently information about on-site investigation is likely to present high perceived deterrence. This result will provide important information to enlarge preventive effects of on-site investigation on fraud and abuse claims.

• Journal of Preventive Medicine and Public Health
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• 제43권3호
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• pp.235-244
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• 2010

Objectives: To examine the prophylactic antibiotic use in reducing surgical site infection. Methods: This was a retrospective study for patients aged 18 years and older who underwent gastrectomy, cholecystectomy, colectomy, cesarean section and hysterectomy. The data source was quality assessment data of the Health Insurance Review & Assessment Service gathered from medical records of 302 national hospitals. Prophylactic antibiotic use was defined as: timely antibiotic administration or inappropriate antibiotic selection. We performed hierarchical logistic regression to examine the association between prophylactic antibiotic use and surgical site infection with adjustment for covariates. Results: The study population consisted of 16 348 patients (1588 gastrectomies, 2327 cholecystectomies, 1,384 colectomies, 3977 hysterectomies and 7072 cesarean sections) and surgical site infection was identified in 351 (2.1%) patients. The rates of timely antibiotic administration and inappropriate antibiotic selection varied according to procedures. Cholecystectomy patients who received timely prophylactic antibiotic had a significantly reduced risk of surgical site infection compared with those who did not receive a timely prophylactic antibiotics (OR 0.64, 95% CI=0.50-0.83), but no significant reduction was observed for other procedures. When inappropriate prophylactic antibiotics were given, the risk of surgical site infection significantly increased: 8.26-fold (95% CI=4.34-15.7) for gastrectomy, 4.73-fold (95% CI=2.09-10.7) for colectomy, 2.34-fold (95% CI=1.14-4.80) for cesarean section, 4.03-fold (95% CI=1.93-8.42) for hysterectomy. Conclusions: This study examines the association among timely antibiotic administration, inappropriate antibiotic selection and surgical site infection. Patients who received timely and appropriate antibiotics had a decreased risk of surgical site infection. Efforts to improve the timing of antibiotic administration and use of appropriate antibiotic are needed to lower the risk of surgical site infection.

• 정보과학회 논문지
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• 제44권4호
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• pp.339-343
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• 2017

상품 또는 상점에 대해 거짓된 후기를 남기는 악의적인 사용자가 증가함에 따라 사용자에게 신뢰성 있는 정보를 제공하는 데 어려움을 겪고 있다. 거짓된 후기는 리뷰 스팸이라고 불리는데, 제품을 홍보하거나, 평판을 훼손하기 위해 작성된다. 이는 제품의 판매량에 직접 영향을 미치기 때문에 이러한 리뷰 스팸을 탐지할 필요가 있다. 국내 쇼핑 사이트에서도 리뷰 스팸은 흔히 접할 수 있으나, 기존 연구에서 제안된 방법은 모두 외국 사이트에서만 평가되었다. 따라서, 본 논문에서는 리뷰 스팸을 탐지하는 기존 방법의 소개와 더불어 네이버 쇼핑의 리뷰 특성을 파악하고, 리뷰 스팸을 탐지하는 여러 가지 방법을 네이버 쇼핑에 적용하여 성능을 평가하였다.

• 무역상무연구
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• 제41권
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• pp.205-234
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• 2009

The trade portal site is one of the innovative skills which makes it possible for trade companies to manage international trade activities more efficiently by using the newest information technology. Especially, trade portal site can be considerable help to small and medium-sized enterprises which have much difficulties in finding overseas buyers due to the lack of international marketing capabilities. This study attempts to present a comprehensive model about the determinants of e-Trust in domestic trade portal site and to suggest practical strategies for e-Trade. Therefore, a theoretical framework was presented by the literature review, and a empirical study was carried out through a questionnaire survey to those who have had experiences of visiting trade portal site. The empirical analysis had the following results. First, it reveals that reputation, web-site quality, transaction efficiency of the trade portal site have influence upon e-Trust dimension. On the other hand, perceived risk did not have significant relationship with e-Trust. Second, e-Trust had significant impact on willingness to depend on the trade portal site. And also, e-Trust had positive influence on performance of using which is measured by sales increase, information sharing, and synergy effect.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제46권3호
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• pp.162-173
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• 2020

Dental implants are the first option for replacement of missing teeth. Failure usually involves additional cost and procedures. As a result, the physician should limit the risk factors associated with implant failures. Implant site is one of many factors that can influence the success or failure of dental implants. The association between early implant failure (EIF) and implant site has yet to be documented. This review aims to estimate the impact of insertion site on the percentage of EIFs. An electronic and manual search of studies that reported early failure of dental implants based on collection site. A total of 21 studies were included in the review and examined for the association between EIF and alveolar site. Subgroup analysis, including a comparison between implants inserted in four alveolar ridge regions of both jaws was performed. The early failure rate was higher for maxillary implants (3.14%) compared to mandibular implants (1.96%). Applying a random effect, risk ratio (RR), and confidence interval (CI) of 95% revealed higher failure in the maxilla compared to the mandible (RR 1.41; 95% CI [1.19, 1.67]; P<0.0001; I²=58%). The anterior maxilla is more critical for early implant loss than other alveolar bone sites. Implants in the anterior mandible exhibited the best success rate compared of the sites.

• Journal of Information Technology Applications and Management
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• 제21권3호
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• pp.35-52
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• 2014

This study aims to examine how the relationship with an information source affects people to perceive credibility of online information. We developed a conceptual framework that explained how people perceived information credibility when they were familiar with the information source and/or when the information source seemed credible. We then compared the models in two different contexts, namely, online review and social media sites, to examine differences. We surveyed 136 online social media users with their online shopping experiences. Among our eight hypotheses, three (H6: the personality similarity between an information provider and an information seeker enhances the perceived credibility of the former; H7: the credibility of an information provider produces a much stronger mediating effect in review sites than in social media sites; H8: the familiarity of an information seeker with an information provider produces a stronger mediating effect in social media sites than in review sites) are fully supported and four (H1: the credibility of an information provider has a positive influence on the perceived credibility of the online information; H2: the familiarity of an information seeker with an information provider has a positive influence on the perceived credibility of the online information; H3: the goal similarity between an information provider and an information seeker enhances the perceived familiarity of the latter with the former; H5: the personality similarity between an information provider and an information seeker enhances the perceived familiarity of the latter with the former) are partially supported. The hypothesis of H4: the goal similarity between an information provider and an information seeker enhances the perceived credibility of the former is rejected. The result confirms that credibility of information is strongly mediated by credibility of information source than familiarity with information source in online review sites and vice versa in social media sites.

• Archives of Plastic Surgery
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• 제47권6호
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• pp.528-534
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• 2020

Split-thickness skin grafting (STSG) is the gold standard for coverage of acute burns and reconstructive wounds. However, the choice of the donor site for STSG varies among surgeons, and the scalp represents a relatively under-utilized donor site. Understanding the validity of potential risks will assist in optimizing wound management. A comprehensive literature search was conducted of the PubMed database to identify studies evaluating scalp skin grafting in human subjects published between January 1, 1964 and December 31, 2019. Data were collected on early and late complications at the scalp donor site. In total, 27 articles comparing scalp donor site complications were included. The selected studies included analyses of acute burn patients only (21 of 27 articles), mean total body surface area (20 of 27), age distribution (22 of 27), sex (12 of 27), ethnicity (5 of 27), tumescent technique (21 of 27), depth setting of the dermatome (24 of 27), number of harvests (20 of 27), mean days of epithelization (18 of 27), and early and late complications (27 of 27). The total rate of early complications was 3.82% (117 of 3,062 patients). The total rate of late complications was 5.19% (159 of 3,062 patients). The literature on scalp skin grafting has not yet identified an ideal surgical technique for preventing donor site complications. Although scalp skin grafting provided superior outcomes with fewer donor site complications, there continues to be a lack of standardization. The use of scalp donor sites for STSG can prevent early and late complications if proper surgical planning, procedures, and postoperative care are performed.

• 한국방재안전학회논문집
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• 제6권1호
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• pp.87-91
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• 2013

사고대비물질 취급자가 수립 제출하는 비상조치계획에 대한 현장이행 기준과 검토 절차를 마련하기 위해 공정안전보고서, 안전성향상계획서에 대한 심사내용과 기준 등을 조사하였다. 각각의 안전관리제도 운영 담당자의 의견과 검토과정에서 예상되는 문제점을 확인하였다. 현장이행과 검토에 대한 기준은 담당자의 업무수행 능력을 고려하여 고도의 전문성을 요구하기 보다는 보고서에 반드시 포함되어야 할 항목과 내용이 적정하게 작성되었는지 여부를 확인할 수 있는 내용위주로 제시하였다.

• 농촌계획
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• 제20권1호
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• pp.161-173
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• 2014

This study aimed to adaptive reuse plan a take advantage of Suncheon Bay Garden Expo 2013. Detailed objectives included: to identify and foster cultural and ecological resources in Suncheon Bay and Garden Expo Site; and to search and propose characterized program in the site for efficient utilization; and to revitalize a site for the vitalizations of the region where garden culture and garden industries for strengthening local competitiveness. The study was multi-phased. The first stage included basic surveys such as site status and environmental context analysis, and questionnaires and similar case studies, and the second stage was to review the direction of preliminary planning, develop associated industries and strategies for regional revitalization and review and incorporate project details. And the third stage aimed to develop a comprehensive plan from spatial plans and program plans and suggest plans to vitalize the operation of the site. The results of the study are as follows: First, the characterization strategy is 'healing experience tourism', 'healing garden', 'healing herbal care' are suitable for the site and regional revitalization. Second, the dimension of 2013 Suncheon Bay Garden Expo which was distinguished into four areas, in consideration of the characteristics and contents of the garden expo site for efficient operation and maintenance. Four area are as follows: the park oriented area, the experiential tourism oriented area, the existing conservation oriented area, and the area for associated industries. Third, the practice of private and public partnerships is needed in order to efficiently manage and operations. The significance of this study is that it is seeking to take advantage of the Garden Expo site and set the plan by existing resources and in consideration of local characteristics, in conjunction with area to envision and proposed management plan. Some problems are remained which have not been able to deal with details program and organization and financial planning programs for the operation of the site. This is for further study.

• 한국터널지하공간학회 논문집
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• 제18권3호
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• pp.283-290
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• 2016

최근 도시지역의 홍수방지 및 지정체 반복구간의 교통문제 해결을 위해 다목적 대심도 복층터널의 건설이 요구되고 있다. 다목적 복층터널은 주기능인 도로기능 이외에 다목적 기능을 부여해 지하공간의 효율적인 활용을 위해 도입이 절실하다. 본 연구에서는 도심지 치수능력 증진과 도로터널의 기능을 동시에 고려하기 위한 입지선정 조건과 복층터널의 단면 구역별 처리가능한 유량에 대한 기초검토를 수행하였다. 터널의 용도별 입지선정 기준 검토를 통해 복층터널의 다목적 활용을 위한 입지선정 기준 방안을 제시하고 있다. 또한 대심도 복층터널의 다목적 활용성 검토를 위해 계획단면에 대한 홍수시 처리 가능 유량을 검토하였다. 본 연구로부터 복층터널의 입지선정은 다양한 분석을 통한 복합적인 고려가 필요함을 알 수 있다.