• Journal of Information Processing Systems
• /
• v.16 no.1
• /
• pp.61-82
• /
• 2020

The security risk management used by some service providers is not appropriate for effective security enhancement. The reason is that the security risk management methods did not take into account the opinions of security experts, types of service, and security vulnerability-based risk assessment. Moreover, the security risk assessment method, which has a great influence on the risk treatment method in an information security risk assessment model, should be security risk assessment for fine-grained risk assessment, considering security vulnerability rather than security threat. Therefore, we proposed an improved information security risk management model and methods that consider vulnerability-based risk assessment and mitigation to enhance security controls considering limited security budget. Moreover, we can evaluate the security cost allocation strategies based on security vulnerability measurement that consider the security weight.

• Journal of Korea Port Economic Association
• /
• v.28 no.2
• /
• pp.95-111
• /
• 2012

The service quality survey for the customers of Gwangyang container port has been done since 2005. It has been difficult to compare annual levels or rival ports because the calculation of weights among service dimensions that is the most important procedure of the assessment systems did not be founded. In particular, the calculation results by the Analytical Hierarchy Process that specializes in estimating the weights were very unstable and not comparable because they were fluctuated annually more than 90% for the specific item. The objective of this study is to support the establishment for new assessment system of service quality with cost- and time-effective tools at Gwangyang port. The confirmatory factor analysis methodology applied to 2007-2009 survey data from the customers of Gwangyang port can estimate ex-post weights to measure annually the stable service quality. The proposed methodology allows us to build the assessment system of more scientific and accurate service quality while reducing the survey items. By this study, a port company can measure accurately the quality of service and improve its competitiveness through being compared to previous periods and leading companies.

• Journal of the Korean School Mathematics Society
• /
• v.17 no.4
• /
• pp.541-563
• /
• 2014

The purpose of this study is to investigate how the curriculum, in which pre-service teachers experience mathematical process and develop assessment items and standards through the process experience in a mathematical essay course, affects the pre-service teachers and suggest its implications for teacher education. Fourty nine pre-service teachers, registered at a mathematical essay course in a K university in Seoul, developed mathematical essay problems and their assessment standards, and their developed processes were analyzed. According to the analysis results, first, mathematical essay problems developed by the fifty students reflect components of mathematical processes. Especially, one characteristic in revising assessment items shows that pre-service teachers considered not only justification process through different levels of difficulty and mathematical reasoning, but also logical descriptions through problem solving, when they worked on group discussions and examined middle school and high school students' responses. Second, while pre-service teachers developed rubrics for their assessment items and revised the rubrics based on students' responses, they established assessment standards which employed mathematical process by focusing on problem solving process rather than results and considering students' unexpected problem solving. The results imply a concrete method in planning and executing a mathematical essay course which makes use of mathematical process in teacher education.

• Journal of Korean Academy of Nursing
• /
• v.39 no.3
• /
• pp.409-421
• /
• 2009

Purpose: In this research multi-level analysis was done to identify factors related to quality of services. Patient characteristics and organizational factors were considered. Methods: The data were collected from the Health Insurance Review and Assessment Service(HIRA) data base. The sample was selected from 17,234 patients who had been admitted between January 2007 and May 2008 to one of 253 long-term care hospitals located in Seoul, six other metropolitan cities or nine provinces The data were analyzed with SAS 9.1 using multi-level analysis. Results: The results indicated that individual level variables related to quality of service were age, cognitive ability, patient classification, and initial quality scores. The organizational level variables related to quality of service were ownership, number of beds, and turnover rate. The explanatory power of variables related to organizational level variances in quality of service was 23.72%. Conclusion: The results of this study indicate that differences in the quality of services were related to organizational factors. It is necessary to consider not only individual factors but also higher-level organizational factors such as nurse' welfare and facility standards if quality of service in long term care hospitals is to be improved.

• Journal of Korea Society of Digital Industry and Information Management
• /
• v.14 no.3
• /
• pp.145-153
• /
• 2018

The purpose of this study is to seek ways how you can apply social responsibility requirements in accordance with the organizational characteristics of 'Dong' community service centers which are administrative service platform organizations, by applying the ISO 26000 to these centers. The ISO 26000, which is an international standard for social responsibility, defines the requirements for social responsibility which all organizations, regardless of their sizes or characteristics, can apply. This does not mean that all organizations must apply all the requirements regardless of their sizes or characteristics, but means that each organization can redefine the requirements applicable to its size and characteristics and apply them. Hence, this study defined 'Dong' community service centers' organizational characteristics and stakeholders and assessed the suitability of 251 categories in the ISO 26000 requirements by using the Delphi technique. Through this assessment process, 135 categories were selected. Then, after conducting an importance test by experts, 83 social responsibility assessment indicators applicable to 'Dong' community service centers were developed.

• Health Policy and Management
• /
• v.21 no.1
• /
• pp.44-60
• /
• 2011

Background : Surgical site infection(SSI) is one of the important nosocomial infections with pneumonia, urinary tract infection. SSI increases mortality, morbidity, length of stay, and costs for postoperative patients. The purpose of this study was to estimate length of stay(LOS) and health care costs from SSI using the large observational data. The ultimate objective was to show the effect of prevention of SSI. Method : This study used antibiotic prophylaxis evaluation data and claims data of the HIRA(Health Insurance Review and Assessment Service). The study population included 18,361 patients who underwent gastric surgery, endoscopic cholecystectomy, colon surgery, hysterectomy, cesarean section in nationwide hospitals from August to October 2007. SSI group and non-SSI group were matched according to propensity score resulted from logistic regression. The paired t-test was used to compare the difference of the LOS and health care costs between SSI group and non-SSI group. Results : The 598 cases of SSI were detected of total subjects, and the crude SSI rate was 3.3%. For each surgery, SSI rates were 5.5% for gastric surgery, 4.7% for cholecystectomy, 6.6% for colon surgery, 2.6% for hysterectomy, and 1.6% for cesarean section. The 596 cases of SSI and the 596 cases of non-SSI were matched by propensity score. The LOS of SSI group was longer than that of non-SSI group, and the difference was statistically significant. Health care costs of SSI group was more than that of non-SSI group which was significant. Conclusions : SSI increased apparently the LOS and healthcare costs. The economic loss might affect the cost of national healthcare as well as patients and hospitals. This study provided the evidence that the healthcare expenditure could be reduced by preventing SSI.

• Korean Journal of Clinical Pharmacy
• /
• v.28 no.2
• /
• pp.117-123
• /
• 2018

Background: Prostatitis, one of the most common diseases of the prostate, is a complex disease with various clinical features. This study aims to analyze the utilization and prescribing patterns of antibiotics in Korean patients with prostatitis between 2008 and 2015. Methods: We used the National Health Insurance Database complied from the Health Insurance Review and Assessment Service (HIRA). The outcomes included the number of claims, number of patients, medical cost, and length of stay for each year. In addition, the prescribing patterns of antibiotics, including fluoroquinolone, and low-dose use of ciprofloxacin and levofloxacin were investigated. Results: The total number of patients and medical cost increased by 9.5% and 51.7% from 2008 to 2015, respectively. Most prostatitis patients were classified as chronic prostatitis patients. The prescribing proportion of antibiotics for chronic prostatitis outpatients decreased from 71.0% to 66.9% from 2008 to 2015, and fluoroquinolone accounted for more than half of the total antibiotics. Over 80% of prescription of levofloxacin and ciprofloxacin was identified to be for low-dose use. Conclusion: Most of the patients with prostatitis experienced pain relief and condition improvement after antibiotic treatment; however, chronic prostatitis and chronic pelvic pain syndrome recur easily. Therefore, active disease management and further studies are needed to enhance our understanding of effective treatment for prostatitis.

• Journal of Society of Preventive Korean Medicine
• /
• v.19 no.2
• /
• pp.51-56
• /
• 2015

Objective : We analyzed present condition of cooperative medical care using claims data of HEALTH INSURANCE REVIEW & ASSESSMENT SERVICE form patients treated by Korean-Western cooperative medicine. The study aimed to offer guidelines in selecting disease-related research in developing Korean-Western convergence technology. Method : Based on the patients using Korean medical service, we analyzed claims data of patients using Korean medical service and western medical service from January 2012 to December 2013. We were assigned to the server remotely. With the concept of 'episode of care', we rebuilt claims data and analyzed present condition of cooperative medical usage. Results : We analyzed present condition of cooperative medical care per episode of care. Among outpatients, Low back pain, lumbar region(M5456) was the highest number. Among inpatients, Sciatica due to intervertebral disc disorder(M511) was the highest number. Conclusion : Based on the claims data provided by HEALTH INSURANCE REVIEW & ASSESSMENT SERVICE, we have derived a list of multy frequently disease frequently treated by cooperative medical care by analyzing present condition.

• YAKHAK HOEJI
• /
• v.53 no.3
• /
• pp.138-144
• /
• 2009

The purpose was to implement drug utilization review (DUR) for whom were diagnosed with chronic kidney disease (CKD) population using health insurance claim data. This study constructed drug utilization database using Health Insurance Review and Assessment Service (HIRA) database and selected contraindicated drugs with kidney based on previously developed drug utilization guide and reviewing other countries' examples. Main outcome measures were the proportion of prescription for 1 or more drugs of concern. The cohort included 115,948 subjects, who were diagnosed with chronic kidney disease. Inappropriate drugs with CKD patients was some used, and the most commonly prescribed classes were aluminum drugs. However it is difficult to find problems with inappropriate drug because claims data doesn't have laboratory data. Based on the result of retrospective drug utilization review study, more studies should be analysed drug utilization patterns and monitoring system should be developed.

• Journal of the Korean Society for Precision Engineering
• /
• v.15 no.4
• /
• pp.44-50
• /
• 1998

The creep life fraction can be evaluated by the degree of grain deformation since the grain of Cr-Mo base metal deforms in the direction of stress. The grain deformation method using image processing technique is developed for life assessment of in-service high-temperature components. The new assessment model of grain deformation method is presented to apply to in-service components and is verified by interrupted creep test for ex-serviced material of 1Cr-0.5Mo steel. The proposed model, which is irrespective of stress direction, is to evaluate mean of the absolute deviation for the measured ratios which are diametrical maximum to minimum dimensions for grains.