• Journal of Educational Research in Mathematics
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• v.26 no.2
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• pp.287-307
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• 2016

In this study, mathematics exams for university entrance in the USA, the UK, Australia, Singapore, and Japan are investigated. We look into SAT, ACT and AP-course in the USA, GCE A-level test in the UK and Singapore, VCE in Australia, and UECE (University Entrance Center Exam) and individual university's admission tests in Japan. Those exams are analyzed in terms of exam system, mathematical contents, types of items, and testing time. Based on the result five issues on university entrance exam system in Korea are drawn out: types of tests, mathematical contents, item types, sub-items, and opening tests results to the public.

• Journal of Communications and Networks
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• v.7 no.3
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• pp.313-324
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• 2005

The success of the IEEE 802.11 standard has prompted research into efficiency of the different medium access methods and their support for different traffic types. A modified version of the point coordination function (PCF) called modified PCF has been introduced as a way to improve the efficiency over the standard method. It has been shown through a simulation study and a mathematical analysis that channel utilization can be much improved compared to the standard, in case there is no so-called hidden station problem. However, under the hidden station problem, the efficiency of the modified PCF would obviously decrease. In this paper, some enhancements of the modified PCF are introduced. Firstly, we propose a retransmission process to allow frames involved in collisions to be retransmitted. Then, we propose a collision resolution mechanism to reduce the frame collision probability due to the hidden station problem. In addition, we propose a priority scheme to support prioritization for different traffic types such as interactive voice and video, and real-time data traffic in the modified PCF. To prevent the starvation of one low priority traffic, minimum transmission period is also guaranteed to each traffic type via an admission control algorithm. We study the performance of the modified PCF under the hidden station problem and the performance of the modified PCF with priority scheme through simulations. To illustrate the efficiency of the priority scheme, we therefore compare its simulation results with those of some standardized protocols: The distributed coordination function (DCF), the enhanced distributed channel access (EDCA), the PCF, and our previously proposed protocol: The modified PCF without priority scheme. The simulation results show that the increment of delay in the network due to the hidden station problem can be reduced using the proposed collision resolution mechanism. In addition, in a given scenario the modified PCF with priority scheme can provide better quality of service (QoS) support to different traffic types and also support a higher number of data stations than the previous proposals.

• Journal of Acupuncture Research
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• v.33 no.2
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• pp.11-20
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• 2016

Objectives : The purpose of this study is to investigate the clinical effectiveness of Korean medical combination treatment for cervical disc herniation. Methods : This is an observational study. 102 patients diagnosed with cervical disc herniation by MRI (Magnetic Resonance Imaging) were investigated from January, 2015 through to December, 2015 at Daejeon Jaseng Hospital of Korean Medicine. They were sorted according to the distribution of sex, age, causing factor, the period of disease, admission day and pain area. All patients were treated with acupuncture, Chuna treatment, and herbal therapy and physical therapy during the admission period. After treatment, NRS (Numeric Rating Scale), NDI (Neck Disability Index) and EQ-5D were assessed to evaluate the treatment efficacy. Results : There were more females than Males with a ratio of 1 : 1.37, the age of fifty was the most with 35.29 %, reason unknown was the most with 72.55 % and the subacute stage was the most with 38.24 %. According to disc herniation types, patients with protruded disc types were the most with 66.67 % and a lesion of C5/6 was the most with 41.18 %. For patients diagnosed with cervical disc herniation, neck and shoulder pain NRS decreased from $6.43{\pm}1.77$ to $3.96{\pm}1.96$(p<0.001) and radiating pain NRS decreased from $5.64{\pm}1.96$ to $3.57{\pm}1.88$ (p<0.001). NDI decreased from $41.72{\pm}14.04$ to $30.84{\pm}15.34$(p<0.001), and the EQ-5D index increased from $0.68{\pm}0.17$ to $0.79{\pm}0.14$(p<0.001) after treating cervical disc patients. Conclusion : Korean medical combination treatment might be effective in decreasing pain and raising the life quality of patients with cervical disc herniation.

• Journal of Convergence for Information Technology
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• v.10 no.10
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• pp.253-258
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• 2020

This study analyzed, the characteristics of ambulatory care sensitive conditions(ACSCs) in patients visiting emergency departments(EDs) and compared characteristics according to two age groups (adults aged 19-64 years and, elderly people aged ≥65 years). By accessing data from the National Emergency Department Information System(NEDIS) from January 1 to December 31, 2018, we examined the proportions of different ED types and ACSCs, length of stay(LOS) in the ED, LOS hospital, and hospital admission rates. Regarding the types of EDs, we found that the proportion of local emergency medical centers was high(P<0.001). Regarding the rates of different ACSCs, 31.7% of adults were treated for gastroenteritis, a high proportion of the elderly people(48.2%) were diagnosed with and treated for pneumonia(P<0.001). The LOS in the ED was longer in elderly people for all diseases categories, except for congestive heart failure and diabetes(P<0.001). The LOS in the hospital was also significantly longer in elderly people for all ACSCs(P<0.05), and the admission rate was significantly higher in elderly people for all diseases, except for diabetes(P<0.01). Thus, analyzing the ED visits made by patients with ACSCs will need to strengthen the health-care policy to induce treatment centered on outpatient.

• Communications of Mathematical Education
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• v.27 no.4
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• pp.369-379
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• 2013

In this paper, we analyzed the freshmen's achievements on general mathematics their GPA based on 'basic mathematics diagonal test score' among college entrance types in natural science or engineering. Also, we studied the achievements of students who were not passed the 'Basic Mathematics Diagonal Test (BMDT)' and had to take supplementary lessons to improve their mathematics abilities four times a week during the first semester of academic year 2012 in Mokpo National University. We found the followings; first, freshmen were accepted by the university through the regular admission have a higher level of academic achievement compared other type admission. Second, freshmen's academic achievement in the first semester has significant meaningful effect on their academic achievement in the second semester. Finally, there are correlations between achievements of general mathematics and a curriculum of freshmen who were passed test after taking supplementary lessons.

• Journal of Environmental Science International
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• v.24 no.11
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• pp.1405-1415
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• 2015

This study is conducted to determine the damage, distinguish the types and identify the restoration by that type for 13 Korea national parks out of 21. There are 21 Korea national parks are in Korea covering 6.67% of the country or $6,656km^2$ ($3,902km^2$ on land and $2,754km^2$ in the sea) currently since the area around Jirisan ($440km^2$) was designated as the first Korea national parks in 1967. With the cancellation of entrance admission on Korea national parks since 2007, annual visitors to the Korea national parks have grown from 37 millions in 2008 to 46 millions by 2013 and continue to grow due to numerous leisure activities, alpine activities and social changes. As such, Korea national parks are natural resource with high value to be conserved and are attracting significant attention as recreational spaces for people at the same time. On the other hand, there have been issues of soil erosions or disturbed vegetation due to increased number of visitor to the national parks. Korea national parks area damage to its type and damage characteristics to analyse the 13 Korea national parks out of 21 on July 2012 March, Korea national parks over the subjects of the National Park from damaged area status Survey analysis by the Korea National Park Service. As a result, 203 million units in the 16 Korea national parks damaged land of the reform package during ecological trail (including non-regular hiking trails) 153 (77.66%), damaged valleys 20(9.14%) independent damaged area, 13 disconnected ecological axis(7.61%), closed trail(2.03%) (3.55%), and line type damage(like a non-regular hiking trails) appears to be a high ratio. Korea national parks damaged land of the results identified, by contrast ratio and the annual number of visitors Bukhansan national park(49.26%), Gyeongju national park(23.65%) damaged land rates, such as Seorasan national park(4.93%), Songnisan national park (4.43 %), Gyeryongsan national park(3.45%), and the annual number of visitors be similar result. The National Park Service has been reporting on damages and restorations but damages and their types have not been established yet. Damages have been generally studied and categorized on hiking trails due caused by heavy traffic on them but the reports were limited on hiking trails only. Since damage to the Korea national parks are not limited on the hiking trails, it is necessary to determine damages in various aspects. Thus, in this study, damage types, spatial characteristics, causes and restorations are analyzed based on the survey results of damages to national parks in order to provide a basis for the efficient management and operation of the Korea national parks.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.24 no.3
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• pp.200-208
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• 2017

Purpose: The purpose of this study was to investigate the occurrence of first onset of constipation during the rehabilitation stage and risk factors for constipation in patients with cerebral vascular disease (CVD). Methods: Participants for this retrospective study were 214 CVD patients admitted to rehabilitation units. First onset of constipation and factors influencing constipation such as dependency level were recorded for 14 days during the rehabilitation stage. Survival analysis with Cox proportional hazard model and descriptive statistics were conducted. Results: Age, patients' severity, types of diet, and dependency level were different between constipation and non-constipation groups. In survival analysis, 99% of participants developed constipation within 14 days after admission to rehabilitation units. Median constipation occurrence time was 7.4 days. Patients who were immobile and had tube feedings were more likely to develop constipation 4.07 times (95% CI: 1.018~16.301, p=.047) and 2.09 times (95% CI: 1.001~4.377, p=.050) respectively compared to patients who were independent and had a regular diet, respectively. Conclusion: Most CVD patients experienced constipation within 2 weeks after entering the rehabilitation stage. Constipation was linked to types of diet and dependency level. These factors associated with constipation should be considered when caring for patients in rehabilitation.

• Journal of Preventive Medicine and Public Health
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• v.10 no.1
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• pp.102-108
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• 1977

A study on the sickness distribution and mode of treatment in rural area was conducted during the period from July '75 to Aug. '75 using 1,225 households, 7,918 population (4,017 male, 3,901female) and 343 cases th at found during the period of survey who had beenlived in Nammyon, Hwasoongun, Chonnam. The summarized results were as follows : 1. Average family number per household was 6.5 and prevalence rate was 43.3 (21.2 for male, 22.1 for female). 2. General sickness distribution by classification of disease according to W.H.O. was highest in disease of the nervous system and sense organs (21.3%), and important others were disease of the digestive system (16.9%) and disease of the respiratory system(14.8%). In male, distribution was in order of downward disease of digestive system, disease of nervous system and sense organs, disease of skin, cellular tissue, bones and organs of movement, and disease of respiratory system. In female, distribution was in order of downward disease of nervou s system and sense organs, disease of respiratory system, disease of digestive system, and disease of skin, cellular tssue, bones and organs of movement. 5. Types of treatment in both sexes were showed that home and folkmedicine (41.1%), pharmacy(24.5%), admission to hospital or clinic (16.9%), out-patient clinic (10.8%) and herbmedicine (6.7%) in downward order. Hospital and clinic utility rate was 27.5% (31.5 for male, 24.0 for female) and it was highest in 0-4 age groups and lowest in 40-49 year age groups. 4. Hospital and clinic utility rate was highest in neoplasms, and the other hands, disease of the nervous system and sense organs and disease of the digestive system were the highest groups in the all types of treatment other than hospital and clinic. 5. On the results of treatment not, exactly replied answer was the highest (41.7%) and only 16.0% said complete recovery. In completely recovered cases, hospital and clinic using group was predominant (58.2%) and in aggravated cases, home and folkmedicine using group was highest.

• Management & Information Systems Review
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• v.32 no.1
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• pp.153-171
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• 2013

The subjects of following research were 663 medical practitioners working at hospitals or bigger sized medical facilities in Pusan. Among the entire research subjects, it was shown that medical practitioners are notably and positively affected when their supervisors' type of leadership was either servant leadership or transformational leadership. The types of leaderships of supervisors that are recognized by medical practitioners were transformational leadership, transactional leadership, servant leadership. The effect of supervisors' leadership according to different type of role are as following. Under the circumstance of no personal and controlled variables, the each group of different medical occupants showed notable positive effects. Nurses corresponded to transformational leaderships, while admission and discharge corresponded to servant leadership. At the same time, medical technicians were most effected by both servant and transformational leadership.

• The Journal of the Korea Contents Association
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• v.22 no.8
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• pp.482-491
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• 2022

The purpose of this study was to classify latent profiles based on satisfaction of student by the campus-life&educational-experiences and to identify factors affecting satisfaction according to each type. For this study, data from the survey of the A univ(1,952 data) were used. To analyze this, a latent profiles analysis was applied to identify subgroups, in which the students by the campus-life&educational-experiences satisfaction, and a multinomial logistic regression model was applied to verify factors affecting group classification. As a result of the analysis, first four groups were classified in the order of 'average·class·highest·relationship satisfaction type'. Second the factors affecting the classification into the remaining three types with 'the average satisfaction type' as a reference group were found to be significant influencing factors(gender, grade, admission process, GPA grade). Based on these results, this study suggested implications for planning and promoting student-tailored education and student support policies at the university level.