• Quality Improvement in Health Care
• /
• v.12 no.1
• /
• pp.62-76
• /
• 2006

Background : There were so many patients who are waiting for admission in Emergency room in spite of more than one hundred empty beds everyday. This study was conducted to evaluate admission-discharge module system by OCS which reduce empty beds. Methods : The data of bed utilization in general beds from 2004 were reviewed. For evaluation of performance at admission-discharge module system by OCS, the change of Occupancy of bed were calculated. Results : The percentage of Average Bed Emptiness was changed from 13.8% to 9.2%. The residents in surgery(100%) and in internal medicine(75.5%) approved this system. Conclusion : The personnel in hospital recognized that it was very important to manage bed. The management of beds by OCS was helpful to reduce empty beds and was important.

• Journal of Communications and Networks
• /
• v.14 no.4
• /
• pp.461-466
• /
• 2012

Any future heterogeneous overlay network system must be able to support ubiquitous access across multiple wireless networks. To coordinate these diverse network environments, one challenging task is a call admission decision among different types of network. In this paper, we propose a new call admission control scheme to provide quality of service (QoS) while ensuring system efficiency. Based on the interplay between network structure and dynamics, we estimate the network's QoS level and adjust the service price adaptively with the aim of maximizing the network performance. A simulation shows that the proposed scheme can approximate an optimized solution while ensuring a well-balanced network performance in widely different network environments.

• Management Science and Financial Engineering
• /
• v.14 no.1
• /
• pp.35-63
• /
• 2008

We discuss the problem of selecting profitable customer orders arriving at a company providing two classes of services. For an arriving customer order for the first class, the company 1) makes a decision whether to accept or reject it (admission control), or 2) decides a price of the order to offer to an arriving customer (pricing control). The customer order undergoing processing in the system may be cancelled owing to unavoidable circumstances with the customer. The second class of service is provided as a sideline, which prevents the server from being idle when all the customer orders for the first class are completed and delivered. This yields the sideline profit. We discuss both admission control and pricing control problems in an identical framework as well as examine the structure of the optimal policies maximizing the total expected present discounted net profit gained over an infinite planning horizon.

• Journal of Preventive Medicine and Public Health
• /
• v.19 no.2 s.20
• /
• pp.314-321
• /
• 1986

Forced vital capacities (FVC's) and forced expiratory volumes in one second $(FEV_{1.0}'s)$ of 26 pneumoconiosis patients were checked at admission and were followed up for 10 months through hospitalization. FVC's and $FEV_{1.0}'s$ were slightly improved in 10 months after admission. The improvement of FVC's was statistically significant. In the group of large opacities in chest radiographs, FVC's and $FEV_{1.0}'s$ were lower than those values in small opacity group at admission but improved more progressively. Similar finding was noted in the group of emphysema; those values were lower at admission but improved more progressively than those of non-emphysema group.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.4
• /
• pp.435-447
• /
• 2019

In order to prevent unnecessary re-admission, it is necessary to intensively manage the groups with high probability of re-admission. For this, it is necessary to develop a re-admission prediction model. Two - year discharge summary data of one university hospital were collected from 2016 to 2017 to develop a predictive model of re-admission. In this case, the re-admitted patients were defined as those who were discharged more than once during the study period. We conducted descriptive statistics and crosstab analysis to identify the characteristics of rehospitalized patients. The re-admission prediction model was developed using logistic regression, neural network, and decision tree. AUC (Area Under Curve) was used for model evaluation. The logistic regression model was selected as the final re-admission predictive model because the AUC was the best at 0.81. The main variables affecting the selected rehospitalization in the logistic regression model were Residental regions, Age, CCS, Charlson Index Score, Discharge Dept., Via ER, LOS, Operation, Sex, Total payment, and Insurance. The model developed in this study was limited to generalization because it was two years data of one hospital. It is necessary to develop a model that can collect and generalize long-term data from various hospitals in the future. Furthermore, it is necessary to develop a model that can predict the re-admission that was not planned.

• Journal of The Korean Association of Information Education
• /
• v.17 no.4
• /
• pp.393-407
• /
• 2013

The university admission system for talented students in computer and information areas has been mainly implemented during early admission period centering on universities located in metropolitan area since 1997. However, the current trend is that total number of selected students and universities that are selecting are continuously declining and 14 students were selected from 2 universities in school year 2013. Accordingly, it is difficult to expect positive effects on education related to information on secondary school curriculum, as well as train and select very talented students in certain areas. Such phenomenon is a result of insufficient educational activities on information of secondary school curriculum, as well as a reflection of social perception in the areas of computer and information. It shows that major variable with significant effects of university admission system has not been properly considered in the policy of training talented students at national level and the administration of secondary school curriculum on computer and information areas. Accordingly, there is a need for a comprehensive approach that considers the method and standards of universities' student selection system when establishing related future policy.

• Sleep Medicine and Psychophysiology
• /
• v.4 no.1
• /
• pp.77-88
• /
• 1997

The purpose of this study was to investigate the prevalence, primary causes, and management of insomnia newly admitted patients in a university hospital. Subjects consisted of 168 adult patients (95 men and 73 women, 88 medical and 94 surgical patients) newly admitted to Gyeongsang National University Hospital from September 7 through September 27, 1996. Sleep patterns of all subjects in the usual nights before admission(UN), the previous night to admission(PN), the night on admission(ON), and the 5th night after admission(5N) were investigated using the Korean version of the St. Mary's Hospital Sleep Questionaire. In addition, all insomnia patients and their doctors and nurses in charge were interviewed by psychiatric residents. Additionally, their medical records were reviewed. Prevalence of insomnia were 22.6% in the UN, 42.9% in PN, 51.8% in ON, and 43.5% in 5N. The prevalence of insomnia was significantly increased immediately before and after admission. There were no significant differences in the prevalence of insomnia by age and sex. The most ammon primary causes of insomnia were somatic symptoms and psychological factors in PN, somatic symptoms and noise in ON and 5n. Only 17 (10.1%) of insomnia patients took medicstions for insomnia control(analgesics in 15, hypnotics in 2). These results shorred that the prevalence of insomnia was significantly increased on hospitalization due to somatic symptoms, environmental factors, and psychological factors, but nearly none were adequately managed.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.32 no.6
• /
• pp.418-421
• /
• 2018

The purpose of this study was to evaluate the changes of liver function test before and after treatment in patients admitted to Korean medicine hospital. We checked liver function test level (aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, total bilirubin, direct bilirubin) of 147 patient who admitted in Korean medicine hospital from July 1, 2015 to June 30, 2018. The subjects were selected those who took herbal medicine continuously during the admission period and who performed liver function test on admission and before discharge. And the subjects were excluded those who had a history of liver and biliary disease at the time of admission or who took hepatoprotectants. Aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase significantly decreased compared with the values of admission(p<0.05), but total bilirubin and direct bilirubin were not significantly changed(p>0.05). On admission 31 patients(21.1%) had abnormal liver function and 6 patients(4.1%) had liver injury while 19 patients(12.9%) had abnormal liver function and 6 patients(4.1%) showed liver injury before discharge. This study suggests that herbal medicine may not injure liver function.

• The Journal of Korean Obstetrics and Gynecology
• /
• v.32 no.3
• /
• pp.57-72
• /
• 2019

Objectives: This study aims to assess the maternal characteristics and changes of body among patients who received Korean medicine postpartum care compared to pre-study. Methods: From January 1, 2018 to February 28, 2019, we included 31 postpartum patients who had body composition analysis at admission and discharge among 34 patients who received postpartum care in ${\square}{\square}$ University Hospital. We used SPSS 21.0 for window to test for statistical significance. Results: The average age, weight, and caesarean section rate increased compared to previous study. The average period of postpartum care has decreased. After postpartum care, abdominal circumference, body weight and Body Mass Index (BMI) was significantly decreased, but not as much as pre-study. The coefficient of determination was derived to predict the effects of postpartum care and calculated as "$Abdominal\;circumference\;change=2.745+0.593{\times}admission\;period$", "$weight\;change=0.214+0.345{\times}admission\;period$" and "$BMI\;change=0.198+0.120{\times}admission\;period$". Conclusions: Compared to previous study, as the maternal age increased and admission period decreased, the weight loss after childbirth decreased. It is necessary to provide individual treatment through coefficient of determination.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.8 no.3
• /
• pp.997-1010
• /
• 2014

Today, as the hierarchical cellular system is getting more attention than before, some recent studies introduce delay based admission control (AC) scheme which delays the admission to the macro-embedded small cell for a relatively short time to prevent unnecessary handover caused by the short-term visitors of the small cell area. In such delay based ACs, when we use improper delay parameter, the system frequently makes incorrect handover decisions such as where unnecessary handover is allowed due to too short delaying, or where necessary handover is denied due to too long delaying. In order to avoid these undesirable situations as much as possible, we develop a new delay parameter decision method based on probabilistic cell residence time approximations. By the extensive numerical and analytical evaluations, we determine the proper delay parameter which prevents the incorrect handover decision as much as possible. We expect our delay parameter decision method can be useful system administration tips in hierarchical cellular system where delay based AC is adopted.