• Journal of Korean Society for Geospatial Information Science
• /
• v.22 no.1
• /
• pp.63-70
• /
• 2014

This study is to analyze impact of geography and timing on the real transactions prices of apartment complexes in Seoul using data provided by the Ministry of Land, Infrastructure and Transport. The average real transactions and location data of apartment complex was combined into the GIS data. First, the pattern of apartment real transaction price change by period and by area was analyzed by kriging, the one of the spatial interpolation technique. Second, to analyze the pattern of apartment market price change by administrative district(administrative 'Dong' unit), the average of market price per unit area was calculated and converted to Moran I value, which was used to analyze the clustering level of the real transaction price. Through the analysis, spatial-temporal distribution pattern can be found and the type of change can be forecasted. Therefore, this study can be referred as of the base data research for the housing or local policies. Also, the regional unbalanced apartment price can be presented by analyzing the vertical pattern of the change in the time series and the horizontal pattern of the change based on GIS.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.12 no.11
• /
• pp.4756-4763
• /
• 2011

The purpose of this study to identify Japanese tourist's satisfaction and revisit after they were treated Korean skin care. The questionnaire was administered to 319 Japanese who had experience to take Korean skin care. The result of empirical study were as follows. First, the result of choice property toward the visit-motivation of skin care salon, it has difference by the visit-motivation type. Second, the result of affection on client's satisfaction, choice property is affected client's satisfaction. Third, the choice factor of affection on intention about revisit after skin care is related on facility, image and side-service factor than service and price. Forth, choice property after they visited skin care salon, client's satisfaction is affected revisit.

• Journal of Digestive Cancer Research
• /
• v.7 no.1
• /
• pp.26-30
• /
• 2019

Pancreatic cancer has a very poor prognosis. Complete surgical resection remains the only current curative treatment. Locally advanced pancreatic cancer (LAPC) is considered as unresectable because of involvement of celiac and/or mesenteric vessels. The treatment of LAPC is a challenge. Current guidelines suggest systemic therapy. However, the majority of patients will never experience conversion to surgical resection. Thus, in these patients, ablation is an alternative therapy for local control, which causes local destruction while ideally avoiding injury to surrounding healthy tissue. Irreversible electroporation (IRE) is an energy delivery system, effective in ablating tumors by inducing irreversible membrane destruction of cells. IRE demonstrated to be safe in previous studies. However, it is not free from complications, even serious. Here, we reported two cases of the IRE in LAPC patients.

• Proceedings of the Acoustical Society of Korea Conference
• /
• spring
• /
• pp.451-454
• /
• 2000

실의 음향성능을 규명하기 위하여 많은 음향인자가 개발되어지고 제시되어 왔다. 음향인자 중 확산은 실의 전반적인 음향성능에 매우 유용한 것으로 여겨져 왔다. 본 연구는 장방형의 형태를 가지고 체적과 마감재료가 같은 2종류의 축척모델을 제작하여 각각의 모델에서 RT, EDT, SPL, C, IACC 등을 측정하여 확산체의 유$\cdot$무에 따른 실의 실내음향 성능을 알아보고자 한다 실험결과 실내 표면의 확산성의 차이에 따라 표면의 확산성이 좋은 공간에서 초기음장에서 음에너지가 집중되고 분산되는 것을 입증하였다. 즉 확산성이 좋은 모델에서 잔향시간(RT)은 더 짧으나 초기감쇠시간(EDT)이 더 길게 나타남으로 인하여 음에너지의 분포가 실의 확산상태에 의하여 음의 발생이후 짧은 시간내에 집중하여 전달되고 있음을 증명하였다. 또한 실의 확산상태가 좋은 공간의 명료도가 확산이 되지 않은 실에 비하여 훨씬 더 좋은 결과를 보이고 있음을 나타냈다. 이상의 결과를 종합하여 볼 때 실내 표면의 확산성이 전반적인 실내 음장의 향상에 크게 기여하고 있음을 밝혀 냈다.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
• /
• v.14 no.5
• /
• pp.431-436
• /
• 2003

In this paper, simulation results of an electromagnetic field and mode distributions in a cylindrical reverberation chamber were presented. Reverberation chamber is an alternative test facility for a semi anechoic chamber, which is widely used for the analysis and measurement of electromagnetic interference and immunity tests. The method of computing the number of modes in a cylindrical reverberation chamber was presented and the number of modes in a cylindrical reverberation chamber with the same volume was compared with the different ratio of radius to height. The FDTD method was used to produce field characteristics inside of rectangular, right-angled isosceles triangular, and cylinder type reverberation chambers with the same test volume.

• Textile Coloration and Finishing
• /
• v.18 no.3 s.88
• /
• pp.59-64
• /
• 2006

Knifing parameters specially related to lint generation in the knitting zone such as knitting needles, yarn feed angle and yarn feed speed were investigated with a developed test rig, which simulated the hutting area on the knitting machine. Three different types of needle counts and feeding angles affected tension and the amount of lint that was caused by frictional forces between the yarn and the morphological structure of the needle. However, the yarn feed speed did not affect the lint generation. The results implied that a more advanced test rig was necessary for further study. Also, chemical and mechanical modifications of the kilting elements may be necessary to improve the lint problem.

• Water for future
• /
• v.28 no.5
• /
• pp.141-150
• /
• 1995

An air chamber is designed to keep the pressure from exceeding a predetermined value, or to prevent low pressures and column separation. Therefore, it can be used to protect against rapid transients in a pipe system following abrupt pump stoppage. In this research, an air chamber was applied to a hypothetical pipe system to analyze attenuation effect of pressure head for different air volumes, locations, chamber areas, coefficients of orifice loss and polytropic exponents. With an increase of air volume, the maximum pressure head at pump site is decreased and the minimum pressure head is increased. For different locations and areas of the chamber, the attenuation effects do not show much difference. Also, as the orifice loss coefficient increases, the maximum pressure head is decreased. For different polytropic exponents, isothermal process shows lower maximum pressure head than that of the adiabatic process.

• Journal of the Korean Society for information Management
• /
• v.21 no.4 s.54
• /
• pp.89-107
• /
• 2004

This study analyzes the present conditions and operations of digital information rooms in the five selected university libraries located in Daegu and Kyoungpook area, with a special regard to the personnel, size of the room, facilities, collections, user instructions and public relations, and related tasks being done. It concludes with some suggestions and recommendations to improve the existing practices and the works in the room based on the result from this study.

• Plant Journal
• /
• v.9 no.2
• /
• pp.36-41
• /
• 2013

For areas installed with one pump, the trend for expected sizes of pump room areas is observed once pump power and floor dimensions are provided. However, these pump rooms with auxiliary charging pumps, turbine driven auxiliary feedwater pumps, and pump rooms with a separate valve room have unique ways to determine the pump room area. No definite trends are identified for areas installed with two pumps using pump power and floor dimensions. The relationship between pump power and floor dimensions is also unable to be found.

• Journal of Korea Multimedia Society
• /
• v.12 no.3
• /
• pp.436-444
• /
• 2009

As the interest in sensor networks has been increased recently, researches have been performed in many areas using sensor networks. In this paper, we propose and implement a lecture room control system based on a sensor network. It is possible to give an efficient lecture by collecting lecturers' lecture history information through the sensor network and controlling a PC, a beam projector, lights, etc. in a lecture room appropriately using the information. We construct a sensor network and perform experiments so that the proposed lecture room control system performs efficiently. Through the experiments, we obtained the optimal message generation period of the sensor node in a lecture room and the optimal number of sensor nodes deployed in a lecture room to communicate without any trouble between sensor nodes.