• 한국컴퓨터정보학회논문지
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• 제24권6호
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• pp.211-216
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• 2019

Knowledge sharing is safe to say that we have already embarked on knowledge-based global economy where knowledge is a decisive factor in global competition for corporations. So in the age of knowledge-based management, it is how we use knowledge that decides success or failure for corporations and the competitiveness of their countries at large as well. We did this research with the help of those who were working in ICT industry including manufacturing, tourism, and others. In this research, we looked into how project participants, organizational characteristic, and relational characteristic affect knowledge sharing and utilization, and what are the factors that have positive effects on corporate success. And all the factors presented in the research are found to have positive effects on the knowledge sharing and utilization. The factors appeared to have positive effects starting with project at first and then on corporate success at large.

• Restorative Dentistry and Endodontics
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• 제10권1호
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• pp.115-126
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• 1984

The purpose of this study was to determine the incidence and the degree of interappointment pain and post obturation pain associated with the pretreated clinical factors or conditions, and to examine the correlation between the success or failure and the pretreated clinical factors or conditions and postoperative pain. The author experienced the conventional root canal therapy in one hundred fifty-one teeth after recording the following clinical factors or conditions - sex, age, pulp vitality status, presence or absence of periapical rarefaction, single or multirooted teeth, pretreatment pain, and investigated the pain during and after treatment for seven days. After six months all the cases were re-evaluated through the clinical sign, symptom, and the recalled radiograph. The following results were obtained; 1. Of the 151 teeth (73.5%) had no interappointment pain, 31 teeth (20.5%) slight pain; and 9 teeth (6.0%) moderate to severe pain. 2. The presence of the pretreatment pain significantly increased the incidence and degree of interappointment, and there were no significant relationship between interappointment pain and other clinical factors or conditions. 3. Of the 151 teeth, 142 teeth (4.0%) experienced no post obturation pain, 3 teeth (2.0%) slight pain, 6 teeth (4.0%) moderate to severe pain. 4. There were no statistical correlation between postobturation pain and any of the clinical factor or conditions. 5. 141 teeth (3.4%) of 151 teeth were evaluated as success in this study, and success rate was decreased significantly in the cases of periapical rarefaction before treatment and postobturation pain. But there were no significant relationship between success or failure and other clinical factors or conditions.

• Archives of Plastic Surgery
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• 제40권2호
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• pp.123-128
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• 2013

Background Some diabetic feet heal without complication, but others undergo amputation due to progressive wounds. This study investigates the risk factors for amputation of diabetic feet. Methods A total of 55 patients who visited our institution from 2008 to 2012 were included in the study. The patients with abnormal fasting blood sugar levels, lower leg vascularity, and poor nutrition were excluded from the study group, and the wound states were unified. The patients were categorized into a treatment success group (n=47) and a treatment failure group (n=8), and their hemoglobin A1C (HgA1C), C-reactive protein (CRP), white blood cell count (WBC), and serum creatinine levels were analyzed. Results The initial CRP, WBC, and serum creatinine levels in the treatment failure group were significantly higher than that of the treatment success group, and the initial HgA1C level was significantly higher in the treatment success group. The CRP and WBC levels of both groups changed significantly as time passed, but their serum creatinine levels did not. Conclusions The initial CRP, WBC, and serum creatinine levels were considered to be risk factors for amputation. Among them, the serum creatinine level was found to be the most important predictive risk factor. Because serum creatinine represents the renal function, thorough care is needed for the feet of diabetic patients with renal impairment.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제27권2호
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• pp.178-183
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• 2001

Since the introduction of the concept of osseointegration, the success rate of dental implant has increased dramatically. So, the uses of dental implant in the treatment of partially or fully edentulous patients have played an important role in dental rehabilitation. Regardless of high success rate of dental implant, some amounts of fixtures cannot help failing. We can classify dental implant failure according to timing, causative factor, etc. This study is focused on dental implant fixture failure, occurring during preprosthetic stage. There are various reasons that cause implant failure on this periods, such as improper patient selection, poor bone quality, and periimplantitis, etc. We investigate the survival rate of 1058 fixtures, which installed in 306 patients in our clinic from January 1997 to December 1999, according to type, sex, location, fixture length and width, using Kaplan-Meier product-limit method and to compare each other with log-rank test. Overall survival rate was 96.80%, and 33 implants failed over the preprosthetic stage. Our survey data identified posterior location of mandible as being associated with implant failure(P<0.05).

• 보건행정학회지
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• 제32권3호
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• pp.323-329
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• 2022

Background: This study aimed to identify the characteristics of the referral and return of patients to clinics in the endocrinology and cardiology departments at the National Health Insurance Service Ilsan Hospital to evaluate the "referral and return of patients to clinics" program and reduce the rate of returning patients. Methods: From May 2018 to December 2020, we identified the number of visits to referral hospitals and hospital usage status at Ilsan Hospital after returning to clinics. We also identified the patients who returned to Ilsan Hospital within 6 months, defined as "failure to transport," among those recommended to be transported to clinics of the Medical Cooperation Center. Additionally, we evaluated the characteristics of the "failure to transport" patients. Results: Among the returning patients, the rate of visiting Ilsan Hospital within 6 months was higher in cardiology than in endocrinology (25.1% vs. 16.7%). Older age, more severe disease, and more number of visits to the department were associated with a high rate of failure to transport. The rate of failure to return was low in cases diagnosed with hyperlipidemia/lipoprotein metabolism disorder. With respect to diabetes, the rate of failure to transport differed according to each type of diagnosis of diabetes. Conclusion: The success rate of the "referral and return of patient to clinics" program differed based on each patient's characteristics, department of visit, and diagnosis. Individualizing according to the visit department and diagnosis is required to ensure successful transfers, and infrastructure expansion and institutional arrangements must be facilitated.

• Restorative Dentistry and Endodontics
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• 제47권3호
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• pp.34.1-34.12
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• 2022

Objectives: This study aimed to evaluate the success rate of endodontic treatments performed by undergraduate students and the factors associated with the outcome. Materials and Methods: A follow-up of 3 to 8 years after root canal filling was carried out in 91 patients. At the follow-up visits, medical and dental history questionnaires were applied along with clinical and radiographic examinations. Data collected in the clinical exam included: the presence of pain, swelling, sinus tract, mobility, tenderness to palpation and percussion, periodontal probing profile, and type/quality of coronal restoration. Postoperative and follow-up radiographs were digitalized and analyzed by 2 trained and calibrated examiners to assess periapical healing. The treatment outcome was based on strict clinical and radiographic criteria and classified as success (absence of any clinical and radiographic sign of apical periodontitis) or failure (other combination). Logistic regression was used to investigate the impact of clinical and radiographic variables on endodontic treatment outcomes at a 5% significance level. Results: The success rate of endodontic treatments was 60.7%. The only risk factor significantly associated with failure was the presence of a periapical lesion on the postoperative radiograph (odds ratio, 3.35; 95% confidence interval, 1.17-9.54). Conclusions: The success rate of endodontic treatments performed by undergraduate students was low and was jeopardized by the presence of a periapical lesion on the postoperative radiograph.

• 한국IT서비스학회지
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• 제17권1호
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• pp.91-103
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• 2018

This study developed a prediction model using machine learning technology and predicted the success of health consulting by using life log data generated through u-Health service. The model index of the Random Forest model was the highest using. As a result of analyzing the Random Forest model, blood pressure was the most influential factor in the success or failure of metabolic syndrome in the subjects of u-Health service, followed by triglycerides, body weight, blood sugar, high cholesterol, and medication appear. muscular, basal metabolic rate and high-density lipoprotein cholesterol were increased; waist circumference, Blood sugar and triglyceride were decreased. Further, biometrics and health behavior improved. After nine months of u-health services, the number of subjects with four or more factors for metabolic syndrome decreased by 28.6%; 3.7% of regular drinkers stopped drinking; 23.2% of subjects who rarely exercised began to exercise twice a week or more; and 20.0% of smokers stopped smoking. If the predictive model developed in this study is linked with CBR, it can be used as case study data of CBR with high probability of success in the prediction model to improve the compliance of the subject and to improve the qualitative effect of counseling for the improvement of the metabolic syndrome.

• 한국건설관리학회논문집
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• 제14권5호
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• pp.92-102
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• 2013

PF사업은 민간의 투자를 유치하여 국가 경제와 산업의 발전에 도움을 주려는 목적으로 수행되는 프로젝트 발주방식의 한 형태이다. 그러나 국내의 경우 개발이익 극대화라는 측면만을 고려함으로 인하여 무분별한 PF사업의 급증과 최근의 금융위기의 여파로 인하여 사업의 중단이 속출하고 있다. 이러한 주된 원인은 PF사업을 객관적으로 정량화하고 이를 분석하여 사전에 발생 가능한 리스크를 차단하려는 노력이 미흡한 결과이다. 본 연구의 목적은 PF사업의 건전성을 평가할 수 있는 방법론을 제안하기 위한 사전 연구로 PF사업의 성공에 영향을 끼치는 원인을 분류하여 세부요소를 파악하고 이를 바탕으로 PF사업의 리스크를 평가할 수 있는 정량적인 체계를 제안하는데 있다. 본 연구는 PF사업의 성공요인과 실패요인을 선행연구와 면담조사를 바탕으로 5개영역, 15개 항목, 104개의 영향인자를 도출하였고, 전문가 설문조사를 통해 영향정도를 검증하였다. 후속 면담조사를 통해 설문조사 결과에 대한 분석을 실시하였고, PF 사업의 건전성 평가를 위한 도구로 활용이 될 경우 PF 개발사업의 건전성 평가에 많은 도움이 될 수 있을 것으로 판단되며, PF 사업에 대한 객관적인 평가 도구 개발 시 유용한 기초자료로 이용될 수 있을 것으로 기대된다.

• 중소기업연구
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• 제42권2호
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• pp.23-42
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• 2020

본 연구는 국내 중소기업을 대상으로 구조조정에 성공한 기업과 실패한 기업의 재무적 요인을 분석하였다. 연구에 필요한 표본은 2008~2014년 재무적 곤경으로 인해 금융기관 워크아웃을 개시한 494개의 중소기업 자료를 중소기업 지원 은행인 A은행으로부터 수집하여 로지스틱 회귀분석과 t-검정을 실시하였다. 아울러 분석자료의 신뢰성을 높이기 위해 외감기업과 비외감기업을 구분하여 추가분석 하였다. 연구결과 첫째, 중소기업 전체 표본의 경우 총자산규모가 작을수록, 매출액규모가 클수록, 무형자산비율이 낮을수록, 매출액영업이익률이 높을수록, 단기부채비율이 낮을수록, 장기부채비율이 높을수록, 그리고 업력이 길수록 등이 워크아웃 성공요인으로 작용되는 것으로 분석되었다. 둘째, 외감기업과 비외감기업으로 구분하여 비교한 결과에서는 차이점이 발견되었다. 셋째, 중소기업을 대상으로 분석한 본 연구에서는 재무적 곤경에 처한 기업의 구조조정 결과(성공)에 영향을 미치는 재무적 요인 중 일부는 대기업 중심의 선행연구와 같은 결과를 보여주었지만, 일부는 전혀 의미가 없거나 반대 부호의 결과가 나타남으로써 중소기업만의 독특한 성공요인이 작용됨을 확인할 수 있었다.

• 대한두개안면성형외과학회지
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• 제24권4호
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• pp.159-166
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• 2023

Background: Free tissue transfer is the preferred method of reconstructing head and neck defects, with a success rate of approximately 95%. Although flap failure is uncommon, it has a major impact on patient morbidity and diminishes quality of life, making it is important to investigate the causes of flap failure. Methods: This retrospective chart review analyzed patients who underwent free tissue transfer during head and neck reconstruction at a single institution between 2016 and 2021. Results: During the study period, 58 patients underwent 60 free flap procedures. Revision surgery was needed in 14 patients. Subsequent free flap surgery was performed in one patient, and three free flaps (5%) could not be salvaged. Cardiovascular disease was significantly associated with flap failure, and venous congestion (thrombosis) was the most common reason for revision surgery. Conclusion: Cardiovascular disease clearly emerged as a factor related to the failure of free flap surgery, and this issue warrants particular attention in patients for whom free tissue transfer is planned.