• 대한안전경영과학회지
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• 제12권3호
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• pp.257-262
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• 2010

The study investigates the various Acceptance Control Charts (ACCs) based on the factors that include process independence, data weighting scheme, subgrouping, and use of control charts. USL - LSL > $6{\sigma}$ that used in the good condition processes in the ACCs are designed by considering user's perspective, producer's perspective and both perspectives. ACCs developed from the research is efficiently applied by using the simple control limit unified with APL (Acceptable Process Level), RLP (Rejectable Process Level), Type I Error $\alpha$, and Type II Error $\beta$. Sampling interval of subgroup examines i.i.d. (Identically and Independent Distributed) or auto-correlated processes. Three types of weight schemes according to the reliability of data include Shewhart, Moving Average(MA) and Exponentially Weighted Moving Average (EWMA) which are considered when designing ACCs. Two types of control charts by the purpose of improvement are also presented. Overall, $\alpha$, $\beta$ and APL for nonconforming proportion and RPL of claim proportion can be designed by practioners who emphasize productivity and claim defense cost.

• 품질경영학회지
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• 제28권1호
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• pp.57-77
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• 2000

A two-dimensional warranty policy, two types of warranty criteria, such as the age and mileage of an automobile, are employed simultaneously to determine the eligibility of a warranty claim. We deal with the analysis of a variety of combined two-dimensional free replacement warranty(FRW) and pro-rata replacement warranty(PRW). In this paper we also propose the analysis of policies with item failures modelled using the one-dimensional and two-dimensional approach, respectively. We obtain expressions for the expected warranty costs and illustrate through numerical examples.

• 경영과학
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• 제11권3호
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• pp.153-167
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• 1994

Credibility theory has provided with a useful tool the assignment of weighting factor that reflects the credibility of the observed individual and collective experience to secure fair experience rate-,making. We review credibility models which can effectively estimate risk premiums using credibility theory, and suggest an empirical Bayed model based on the collective statistics to estimate the structural parameters. To illustrate the use of evolutionary models, the models are applied to the actual data, such as loss ratio, claim frequencies and severity, in the Korean automobile insurance. Also the possibilities of generalizations and applications of empirical models are discussed.

• 보건행정학회지
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• 제34권2호
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• pp.163-177
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• 2024

연구배경: 본 연구는 부당청구 예방형 자율점검제 시범사업의 "개선요청 통보 및 모니터링" 중재활동이 의료기관의 중재 실시 전과 후 청구건수와 청구총진료비 청구행태에 있어서의 변화를 검증하고자 하였다. 방법: 자료는 건강보험심사평가원의 2021년 7월부터 2022년 2월까지 시범사업 항목인 '정맥 내 일시주사(KK020)'를 청구한 기관 중 예방형 자율점검제 대상기관으로 선정된 1,129개 의료기관의 청구자료와 신고 현황자료를 활용하였다. 비교 대상을 선정하기 위해 1:3 비율로 성향점수매칭을 사용하였고, 청구행태 변화를 검증하기 위해 대응표본 t-검정과 t-검정을 실시하였다. 또한 청구행태 변화에 차이가 있는 경우 이에 영향을 미치는 요인분석을 위하여 회귀분석을 시행하였다. 결과: 중재 실시 전과 후의 청구행태는 실험군의 모든 의료기관 종별에서 청구건수와 청구총진료비가 유의하게 감소하였고, 의원의 대조군에서는 유의한 증가를 보였다. 의료기관 및 의사 특성에 따른 중재 실시 전·후 청구행태는 실험군은 의원의 의사 연령 40세 미만을 제외하고 모든 종별에서 유의하게 감소하였다. 대조군은 종합병원과 병원은 개원기간에서, 의원은 표시과목에서 일부 유의한 감소가 있었고, 의사 50세 이상 남성에서 유의하게 증가한 것으로 나타났다. 실험군 대상 의료기관의 청구행태에 변화에 대한 회귀분석 결과, 모든 종별에서 중재 실시 전과 후에 청구건수와 청구총진료비가 유의하게 감소하였다. 또한 의료기관과 의사 특성에서 병원은 개원기간이 길수록 유의한 증가를 나타났고, 의원은 소재지역과 표시과목(기타)에서 유의한 감소를 보였다. 결론: 실험군의 부당청구 예방형 자율점검제의 중재 실시 이후 청구경향의 변화가 연구가설대로 감소하는 경향을 보였다. 이는 제도 시행 직후에 의료기관 스스로 청구행태를 개선하고, 교정하는 사전예방적 활동의 효과가 존재하는 것으로 나타났다. 또한 대조군에서도 통보 대상기관 위주의 제도운영방식에도 불구하고 일부 유의한 감소가 나타난 것은 예방형 자율점검제의 간접적인 효과로 볼 수 있다. 따라서 비대상기관에도 청구행태 개선활동이 이루어질 수 있도록 적극적인 홍보와 교육, 간담회 등의 추가적인 지원과 지속적인 모니터링이 필요하다. 이를 통해 부당청구가 감소될 수 있도록 예방형 자율점검제를 확대하는 것이 바람직하다.

• 한국중재학회지:중재연구
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• 제13권2호
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• pp.489-517
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• 2004

The resolution of the 1993 Uruguay Round and the opening of Korea's construction market in '97 marked the beginning of the globalization of Korea's domestic construction market. Consequently, the process led to changes in contracting procedures, as well as disputes in construction management. With globalization came a rapid realization of reasonable values, which forced the hierarchical vertical relationship between the owners, constructors, and subcontractors into a more equal, horizontal relationship. Once the hierarchical relationship was altered, the late 1990's witnessed a dramatic increase in managerial disagreements, in addition to escalating legal disputes and expenditures. The horizontal relationship was a new concept and brought forth many complexities. Unfortunately, because all of this was new, management of construction disputes was elementary at best. Anticipation of disputes is the key to effective dispute management. This includes thorough reviews of contract documents, document management, construction records, and checklists. Also necessary is the education of owners and contractors with pertinent knowledge concerning dispute management. The following paper focuses on the importance of observing construction disputes in order to facilitate management thereof.

• 대한안전경영과학회지
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• 제12권3호
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• pp.231-235
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• 2010

Recently, according to the total quality management environment, the necessity of the systematic administration about the quality information is gradually enlarged as to vehicle related company. Accordingly, related companies require the operation of the information management system matched with the quality administration task level. And through the storage and share of the efficient quality information, they try to solve the customer claim about the quality and prevent the quality problem recurrence of product. This research suggests the standard business process of the auto part supplier for the efficient management of the quality information and the quick correspondence of the quality problem. In addition, by building and managing the quality information management system will be able to expect the more efficient quality management and the product reliability insurance.

• 보건행정학회지
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• 제16권2호
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• pp.49-76
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• 2006

The aim of this study was to explore the effects of a computerized review program which was introduced in August 1, 2003, using claims data for acute respiratory infection related diseases. National Health Insurance (NHI) claims data on respiratory infection related diseases before and after the introduction, with six month intervals respectively, were used for the analysis. Clinic was the unit of observation, and clinics with only one physician whose specialty was internal medicine, pediatrics, otorhinolaryngology and family medicine and clinics with a general practitioner were selected. The final sample had 7,637 clinics in total. Indices used to measure practice pattern was prescription rates of antibiotics, prescription rates of injection drug per visit, treatment costs per claim, and total costs per claim. Changes in the number of claims for major disease categories and upcoding index for disease categories were used to measure claiming behavior. Data were analysed using descriptive analysis, t-test for indices changes before and after the introduction, analysis of variance (ANOVA) for practice pattern change for major disease categories, and multiple regression analysis to identify whether new system influenced on provider' practice patterns or not. Prescription of antibiotics, prescription rates of injection drug, treatment costs per claim, and total costs per claim decreased significantly. Results from multiple regression analysis showed that a computerized review system had effects on all the indices measuring behavior. Introduction of the new system had the spillover effects on the provider's behavior in the related disease categories in addition to the effects in the target diseases, but the magnitude of the effects were bigger among the target diseases. Rates of claims for computerized review over total claims for respiratory diseases significantly decreased after the introduction of a computerized review system and rates of claims for non target diseases increased, which was also statistically significant. Distribution of the number of claims by disease categories after the introduction of a computerized review system changed so as to increase the costs per claims. Analysis of upcoding index showed index for 'other acute lower respiratory infection (J20-22)', which was included in the review target, decreased and 'otitis media (H65, H66)', which was not included in the review target, increase. Factors affecting provider's practice patterns should be taken into consideration when policies on claims review method and behavior changes. It is critical to include strategies to decrease the variations among providers.

• 산업경영시스템학회지
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• 제24권68호
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• pp.67-84
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• 2001

Hotel industry publications demonstrate a keen interest in the revenue enhancing potential of yield management, but there has been little research on the extent to which this pricing technique is actually utilized by hotel general managers. This research tests the proposition that there are eight basic elements of yield management in hotels. The degree to which yield management is practiced is indicated by the extent that these eight elements are in place. It was found that there is a positive relationship between a managers perception of his or her own yield management utilization and the extent to which the eight elements are used. It was also found, however, that while 77% of hotels claim to be utilizing yield management techniques extensively, very few are using all of the basic elements in their efforts to maximize revenue.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2008년도 추계학술대회
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• pp.145-152
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• 2008

Single PPM Quality Innovation Movement is originally developed quality program in Korea for supplier's quality level-up since 1995. The quality target is below the 10ppm(parts per million) in outgoing quality and delivered goods plus field claim. This Single PPM Quality Innovation Movement program was conducted to realize the anticipated results not only due to management result level's increasing, but also the company's confidence and competitiveness. This study attempted to find the mutual influences on the participation of the constituent members, satisfaction of the constituent members and results of the management from Single PPM Quality Innovation Movement. The reliance analysis for the measurement material on the questionnaire was verified by Cronbach's alpha coefficient. Participation of the constituent members, satisfaction of the constituent member and result of the management, the influences upon Single PPM improvement degree level were verified through the structural analysis by using SPSS statistic package. The influence evaluation among the groups was evaluated by the structure equation.

• 한국병원경영학회지
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• 제4권2호
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• pp.286-304
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• 1999

The purpose of the study was to analysis physician's prescribing behavior. Data was collected from 320 medical doctors of 10 general hospitals from August to September in 1996. The major findings are as follows; 1) Prescribing dosage: 74% of total selected middle dosage. Resident doctors used maximum dosage. 2) The number of similar antibiotics: 72.4% of total used 1 antibiotic. Surgery depts. and resident doctors selected 2, 3 antibiotics. Physicians to consider of insurance benefit or non insurance benefit used the number of antibiotics less than not to consider. Physicians to think over patient's economic state used less the number of antibiotics than that not to consider. 3) Used term of antibiotics: Total mean was 7.39 days. medical parts had 9.11 days but surgery used 6.41 days. Specialists consumed 6.57 days and residents applied 7.80 days. Physician to reflect result of claim used short term of antibiotics than that don't reflected. 4) Optional order of antibiotics: First antibiotics were selected 68% of total respondents, by medical depts, but secondary, tertiary antibiotics was used surgery depts. Tertiary antibiotics was used residents doctors, universal hospitals, fill beds and over. 5) The number of the items of oral drug : 3-4 the items of oral drug were used 76% of respondent Surgery parts selected 1-2 the items of oral drug, medical depts. selected five and over. Physician to reflect result of claim used less the number of the items of oral drug than that don't reflected. Physician to prescribe different of class of insurance used less the number of the items of oral drug than that don't prescribe different.