• Convergence Security Journal
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• v.7 no.3
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• pp.1-6
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• 2007

It is important to manage and correctly evaluate the performance of server in order to improve he performance of server. That is, with the aim of finding whether resources are properly utilized, it is a method to improve both software and hardware aspects. Conventional method in evaluating the server performance involved installing software between server and client and generating the load and by simulating the process, it evaluated the handing efficiency of work load generated per packet volume. Therefore, this paper aims to pro-vide precise measurement method by distinguishing the characteristics of web server and the users' usage pattern and by evaluating the work load management through applying various standards. Specially, it presents the evaluation method from web service of personal and business.

• Aerospace Engineering and Technology
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• v.6 no.2
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• pp.52-59
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• 2007

Telecommunication satellite consists of a bus system and an RF payload system with high efficiency and high gain reflector antennas. Antenna measurement and also RF system performance (antenna under test, payload and satellite level) have to be evaluated enough before launching in the far-field range or equivalent test range. Basically far-field range is required in a range from two hundred meters to several kilo meters, and it is highly constrained to the externa1 environment, like the RF and the whether environment So the compact antenna test range is developed and used efficiently without external environments as in-door facility. This paper describes the configuration of the compact antenna test range, the range error, and the physical concept of the plane wave illumination Also, it provides a overall design of the anechoic chamber and range parameter values to accommodate the precision measurements in antenna test range.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.13
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• pp.5265-5270
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• 2014

Background: In Korea, the National Health Insurance program has initiated various copayment policies over a decade in order to alleviate patient financial burden. This study investigated healthcare spending and utilization in the last 12 months of life among patients who died with lung cancer by various copayment policy windows. Materials and Methods: We performed a retrospective cohort study using nationwide lung cancer health insurance claims data from 2002 to 2012. We used descriptive and multivariate methods to compare spending measured by total costs, payer costs, copayments, and utilization (measured by length of stay or outpatient days). Using 1,4417,380 individual health insurance claims (inpatients: 673,122, outpatients: 744,258), we obtained aggregated healthcare spending and utilization of 155,273 individual patient (131,494 inpatient and 103,855 outpatient) records. Results: National spending and utilization is growing, with a significant portion of inpatient healthcare spending and utilization occurring during the end-of-life period. Specifically, inpatients were more likely to have more spending and utilization as they got close to death. As coverage expanded, copayments decreased, but overall costs increased due to increased utilization. The trends were the same in both inpatient and outpatient services. Multivariate analysis confirmed the associations. Conclusions: We found evidence of the higher end of life healthcare spending and utilizations in lung cancer patients occurring as coverage expanded. The practice pattern within a hospital might be influenced by coverage policies. Health policy makers should consider initiating various health policies since these influence the long-term outcomes of service performance and overall healthcare spending and utilization.

• Journal of the Korean Society of Costume
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• v.51 no.8
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• pp.111-121
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• 2001

본 연구는 중년여성의 상반신을 대상으로 기존원형에 대한 평가를 실시한 후 이를 기본으로 제도법을 수정·보완하여 중년여성 체형에 맞는 상반신 토루소 연구원형을 제작하기 위한 목적으로 연구되었다. 연구 대상은 35세에서 59세의 중년여성으로 하였으며, 45세를 전후로 체형이 변한다는 선행 연구를 토대로 중년 전기(35세∼45세), 중년 후기(46세∼59세)로 나눠 연구하였다. 연구원형 제작을 위해서 97년 국민체위조사보고 자료에 나온 35세∼59세에 해당하는 신체치수를 사용하여 대학에서 교재로 사용되고 있는 4가지 원형을 설계하고 이를 CADsystem을 이용하여 각 Pattern간의 차이를 정확하게 비교하고, 4가지 원형의 실험복을 제작하여 착의 실험을 통해 객관적 평가 11항목, 주관적 평가 23항목에 대해 설문 조사를 하여 문제점을 파악하였다. 이를 기초로 연구원형을 제작하였고 제작 후 연구원형의 신체 적합성을 알아보기 위해 기존원형과 마찬가지로 착의 실험을 하여 평가하였다. 실험 결과 기존원형들이 착용시 진동부분과 뒤중심부분의 당김으로 인해 착용자가 불편함을 느끼는 것으로 나타났고 외관상으로는 가슴둘레와 엉덩이둘레 부분에 여유분량이 중년여성 체형에 비해 상대적으로 적었으며 가슴선, 허리선, 엉덩이선의 위치 역시 중년여성의 체형과는 맞지 않은 것으로 나타났다. 대체로 중년 전기에 비해 중년 후기에서 수정 보완이 더 요구되었는데 특히 나이가 들수록 등이 뒤로 젖혀지는 현상으로 인해 측면에서 봤을 때 허리가 들어가는 현상이 두드러져 뒤 허리부분의 수정이 요구되었다. 이에 연구원형에서는 기존원형에서 나타났던 가슴선, 허리선, 엉덩이선의 위치 조절을 위해 앞목기준선을 위로 2cm 올려 주었고 가슴둘레와 엉덩이둘레 부분에 여유분을 각각 2cm더 주어 제작하였으며 중년 후기에서 두드러지게 나타났던 뒤허리부분의 문제점을 허리중심선 설정시 1∼2cm안쪽으로 설정하여 체형변화를 반영하였다. 이에 따른 연구원형에 대한 주관적·객관적 착의 평가 결과는 착용시 기존원형에서 나타났던 진동부분과 뒤중심부분의 당김이 없어지고 외관상 가슴선, 허리선, 엉덩이선이 기존원형보다 개선된 것으로 나타났으며, 전체적인 외관에서도 전·후기 모두 기존원형 보다 좋은 것으로 평가되었다.

• Journal of the Korean Society of Costume
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• v.66 no.7
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• pp.171-191
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• 2016

Lady Han, Gongshin-buin(恭愼夫人韓氏: 1410~1483) was Gongnyeo of Ming emperor and sister of Han Hwak(韓確:1400~1456). The aim of this study is to analyze the characteristic of costume presents for Lady Han, and to investigate a part of Joseon women's attire in the 15th century. Most of the presents for Lady Han were native products of Joseon to help alleviate her homsickness, but surviving relics are very rare. The costume-related presents included daily accessories and fabrics such as natural ornaments, embroidered pouch, needle case, wig, wooden comb, portable knife with multi-blades, various colored plain silk [綿紬] and ramie. Also, preceding research analysis of costume relic were combined with study of presents for Lady Han's. The most salient costume of Joseon women in the 15th century was the symmetric collared jacket. In addition, ornamented jeogori, pouch with pine nut stitch, chima, jangot, jangsam, black veil[羅兀] made with ra or jeung, glass beads, paintings of Ming and Joseon can be references. Illustrations show 6 representative type of Joseon women's full attires in the 15th century are as follows. First, is a combination of 'symmetric collared jacket with peacock rank badge, jeoksam, chima, underwear' and 'hoa-a, janga-a, embroidered pouch, needle case, knife with multi-blades: presents for Lady Han'. Second, formal wear focusing on symmetric collared Jacket of cloud pattern. Third, formal wear focusing on multicolor ornamented jeogori. Fourth, town wear with jangot and neoul. Fifth, formal wear with jangsam. Sixth, daily wear focusing on banbi with symmetric squre collar. Accessories and underwear shown in another illustration were same as the first illustration. Results of this study can be used as content for making historically accutate costumes as well as costume education.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.32 no.5C
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• pp.211-220
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• 2012

Coarse granular materials such as gravel, rubble is used as major fill materials in earth structures of railway, road and dam. Therefore, it is essential to accurately evaluate properties of these materials for reasonable design and construction. In the precedent study, we built large triaxial testing system and verified system compliance with a focus on the dynamic properties. And we could secured the reliability of the system. In this study, the cyclic triaxial tests were performed in various experimental conditions on coarse granular material. Two series of parallel graded samples are prepared by mixing crushed rock. The influence of grain size, loading pattern, loading frequency, and fine contents were analyzed and discussed.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.3 no.4
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• pp.73-80
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• 2004

A dual purpose robot automation system is developed for both arc welding and spot welding by one robot within a cell. The need for automation of both arc welding and spot welding processes is urgent while the production volume is not so big as to accommodate separate station for the two processes. Also, space is too narrow for separate station to be settled down in the factory. A spot welding robot is chosen and the function for arc welding are implemented in-house at cost of advanced functions. For the spot welding, a single pole type gun is used and the robot has to push down the plate to be welded, which causes the robot positioning error. Therefore, position error compensation algorithm is developed. The basic functions for the arc welding processes are implemented using the digital I/O board of robot controller, PLC, and A/D conversion PCB. The weaving pattern is taught in meticulously by manual teach. A fixture unit is also developed for dual purpose. The main aspects of the system is presented in this paper especially in the design and implementation procedure. The signal diagrams and sequence logic diagrams are also included. The outcome of the dual purpose welding cell is the increased productivity and good production stability which is indispensable for production volume prediction. Also, it leads to reduction of manufacturing lead time.

• Asian-Australasian Journal of Animal Sciences
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• v.14 no.8
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• pp.1078-1084
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• 2001

Twelve growing male lambs ($10.05{\pm}0.41kg$, 5 months age) were assigned to three equal groups in a completely randomized design and fed respectively wheat straw (WS), ammoniated wheat straw (AWS) or urea supplemented wheat straw (USWS) along with concentrate mixtures of varying protein and energy contents to meet their requirements as per NRC (1985). Despite comparable nutrient intake and digestibility, the lambs fed A WS based diet digested lower (p<0.05) crude protein. The digestibility of NDF and hemicellulose were lower while the digestibility of cellulose was higher in lambs on AWS as compared to lambs on USWS based diet. The lambs of all the three groups were in positive and comparable N, Ca and P balance except higher Ca balance in lambs fed WS based diet. The body weight change, average daily gain and feed conversion efficiency were similar among the dietary groups. All the parameters of rumen fermentation pattern were comparable between lambs of AWS and USWS based diets except ammonia-N concentration that was higher in the latter however it was lower in WS fed group. Though, the feeding cost per unit gain was comparable in lambs fed all the three diets, the cost incurred towards roughage during 120 days of experimental feeding was significantly less in lambs fed AWS than UTWS. Thus, feeding of USWS can be practiced to minimize labour cost and environmental pollution involved in the process of urea treatment without affecting the performance of growing lambs.

• Korean Journal of Human Ecology
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• v.23 no.4
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• pp.665-680
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• 2014

The purpose of this study was to develop the construction process of orthopedic compression garments (OCG) for balancing of the left and right lumbar muscle power and strength to prevent low back pain. One male subject having low back pain was involved for investigating of the lumbar muscle power. EMG (Telemyo DTS2, Noraxon, U.S.A) was measured with/ without 3 types of waist assistant belt around the waist area of the subject. Based on the electromyogram value of left and right body, OCG were constructed as follows. Firstly, stretchable t-shirts type with supportive waist belt was selected for the convenience of wearing and laundering the OCG. The design lines of the front and back waist parts were created depending on the anatomy of the torso. Secondly, 3D pattern was developed using 3D Clo, RapidForm XOR, 2C-AN, and Yuka CAD program to increase the fit of the OCG. Finally, stretchable power-net was layered as linings in two ways, a single lining and double layered linings, and evaluated measuring lumbar muscle EMG by five subjects with low back pain. As the results, they were effective to balance the left and right lumbar muscle power and strength. Also the OCG with the double layered power-net lining was superior to the one layered lining in terms of fit and comfort.

• Journal of Korean Society of Forest Science
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• v.97 no.3
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• pp.316-325
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• 2008

This study was done to compare socio-economic characteristics and travel pattern, preferences for ecotourism facilities and programs of domestic and international tourists who visited to Jeju Island. On-site survey was carried out during July, 2006 and a total of five hundred and fifty five (555) individuals' data were analyzed. Survey results showed that there were significant differences between socioeconomic characteristics and travel patterns as well as preferences of both parties. Even among international tourists from countries with different languages showed different characteristics. These different characteristics among tourist groups imply that tour route design and program development should be accordingly considered to provide satisfactory experiences.