• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.1
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• pp.64-74
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• 2019

The aims of this study were verifying the influences of social support(family, friend, community) on perceived burdensomeness and hopelessness and mediating effects of perceived burdensomeness and hopelessness between social support and suicidal ideation. In results, family support reduced suicidal ideation of the elderly through mediating role of perceived burdensomeness as well as serial mediating effect of perceived burdensomeness and hopelessness. Friend support reduced suicidal ideation of the elderly through parallel and serial mediating effects of perceived burdensomeness and hopelessness. Community support reduced suicidal ideation of the elderly through mediating role of hopelessness. Social support show not direct effect but indirect effect on suicidal ideation through reduction of negative influencing factor(burdensomeness, hopelessness). In conclusion, we proposed it were needed that various efforts which improve the relation between family members in the age of nuclear family and ageing era, social policy support which development social network of the elderly, and the efforts which keep informed the social policy support of the community.

• The Journal of the Korea Contents Association
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• v.11 no.7
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• pp.192-209
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• 2011

This study looked into coping strategies of local terrestrial broadcasting companies in the media market, since the introduction of comprehensive programming channels was confirmed. Local terrestrial broadcasting companies vulnerable to market competitiveness are driven more out to the difficulty of survival in a limited advertising market with the advent of comprehensive programming channel. and Local terrestrial broadcasting receive discriminative application than comprehensive programming channel. They have reverse discrimination in must-carry, broadcasting area, programming regulation, advertisement regulation, broadcasting development fund. Hence, Local terrestrial broadcasting needs diverse countermeasures at difficult media circumstances. Above all, Competitive content reinforcement is desperately needed. That's why content distribution structure needs diversification. And, It is necessary for local terrestrial broadcasting companies to diversify the content distribution system. As a way to expand distribution structure of local broadcasting, the introduction of local programming regulations for total amount will be highlighted in the nationwide network program. The mandatory policy that programs produced by local terrestrial broadcasting companies will be broadcast regularly in prime time through a nationwide network is an example. In addition to developing high content independently, 2nd Multiple channels of distribution is needed. It has to be supplied to various platforms including local broadcasting, SO and etc. In addition, it is necessary to activate regional co-production program between local terrestrial broadcasting companies and regions. Time rate between central stations and local terrestrial broadcasting companies must be distributed practically. And also, local terrestrial broadcasting companies in addition to ad revenue model to themselves and their own businesses by expanding the sponsorship to strengthen the competitiveness will have to nurture self-sustaining. Moreover they must have enlarge economy of scale through widen of broadcasting area.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.685-693
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• 2017

This study aims to effectively respond to urban local rainstorms by classifying the risk against flood damage for each use district. The risk classification is based on sensitivity analysis of the socio-economic damage caused by local rainstorms in Changwon city, Korea by a Fuzzy model using data, such as the districts that provide institutional bases for land use, land prices, which estimate the property values, and floor area ratios, which measures the density and areas of flood damage. The analysis result indicated that flood damage in five districts of Changwon (Masan happo-gu, Masan Hoewon-gu, Sungsan-gu, Euichang-gu, and Jinhae-gu) is highest in the order of commercial areas, residential areas, industrial areas, and forests, which was attributed to high land price and floor area ratio of commercial areas. On the other hand, specific analysis in Masan Hoewon-gu and Sungsan-gu was different from the previous result, indicating that the risk against flood damage may vary according to the districts depending on their local conditions. The analysis from this study can be applied to future urban planning and be used as a guideline to estimate the potential flood damage. Overall, this study is meaningful in that it proposes an effective management of land use as a new resolution to mitigate of urban flood damage within a broader perspective of climate change and urbanization.

• Journal of the Korean Society for Library and Information Science
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• v.48 no.3
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• pp.335-351
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• 2014

This study proposes a customized SNS operational strategy for special libraries based on a case study on the Ocean Science Library (OSL) of South Korea. The study conducted an in-depth analysis on an organizational structure, manpower, contents, and promotion. The outcome of SNS operational strategy deducted from this study can be categorized into several items, including: (1) a selection of an appropriate SNS channel, which meets the objective of the operation; (2) a formal division of works for SNS operation; (3) a designation of full-time managers and an establishment of a task force team; (4) a specialization of contents according to specific subjects; (5) on/off-line promotions focused on events, which encourage participations; (6) an improvement of contents through regular log analyses; and (7) a promotion of library website access through SNS, and so on. This research also suggested the strategies for the development of SNS operation: strengthening of communication and cooperation among librarians; distribution of academic and research outcomes of the umbrella organization; enhancement of a role as a communication channel between librarians and users, and carry out a role as a 'social curator.'

• Journal of Korean Neurosurgical Society
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• v.30 no.6
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• pp.711-716
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• 2001

Objectives : Three-dimensional computed tomographic angiography(3D-CTA) is recently developed diagnostic imaging modality. We have studied this noninvasive method for possible role in replacing conventional angiography( CA) in the detection of aneurysms of the circle of Willis in patients with subarachnoid hemorrahge(SAH). Methods : We studied retrospectively, the 100 patients with SAH or unruptured aneurysms admitted to our hospital from October 1997 to December 1998. Among there, 85 patients underwent CTA, 82 patients underwent CA and 67 patients underwent both of CTA and CA. 3D-CTA was obtained using maximum intensity projection(MIP) and shaded-surface display(SSD) reconstruction. Results : Total 107 aneurysms were detected in 92 patients, and 64 aneurysms were detected in 67 patients underwent both CTA and CA. In five cases of those 67 cases, aneurysms were detected by CA but not by 3D-CTA. The detection rate of aneurysms(91.8%) and the detection rate of parent artery in cases of anterior communicating artery aneurysms(86.9%) with total 3D-CTA were relatively compatible with that of CA. But 3D-CTA was not enough in detection of posterior communicating artery aneurysms, internal carotid artery aneurysms as well as small sized aneurysm(<3mm). Conclusion : We consider CTA is valuable in as a screening test for cerebral aneurysm and follow-up test. And it is also valuable in early surgery for patients with aneurysmal rebleeding because of simple, quick, non-invasive method.

• The Journal of the Korean bone and joint tumor society
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• v.6 no.2
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• pp.77-81
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• 2000

Malignant peripheral nerve sheath tumors(MPNSTs) are uncommon sarcomas that mostly arise in the soft tissue. They can develop from the pre-existing neurofibromas or schwannomas, or denovo from the peripheral nerves, or they can occur following the radiation therapy. We report a case of MPNST that developed in the sciatic nerve of the patient with neurofibromatosis type-1(NF-1). The patient was a 39-year-old man with the history of NF-1, who's main symptom was a rapidly enlarging painful mass in his posterior thigh. The well demarcated tumor, $6.5{\times}5{\times}4.5$cm in size, was composed of closely packed spindle cells. Since the patients with NF-1 have a high risk for developing a recurred MPNST, the importance of the clinical follow up is emphasized.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.2
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• pp.256-263
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• 2009

KORAIL carries out an improvement project of railway signaling system for the conventional line from the existing method which permits a train to move within limited speed the ground signal of ATS(Automatic Train Stop) system. The proposed system makes possible that a train can be driven using a speed profile created by onboard signaling system(ATP) with the movement authority from ground balise. A driving test over 100,000km is being executed by developing a tilting train for the speed elevation on the conventional line. And, the introduction of the tilting train by ATP system to the Jung-ang line is expected. However, a speed elevation on a curved line section has a restriction. Therefore, research on safety braking model and train separation control technology for the localization of ATP system is required preferentially. In this paper, we presented a safety braking model of ATP system and a train separation control method that use ground balise as variable information provider, and executed a performance simulation.

• Journal of Korea Technical Association of The Pulp and Paper Industry
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• v.48 no.1
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• pp.127-133
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• 2016

This study is performed that furniture and interior materials of MDF's (Medium Density Fiberboard) biodegradation properties, and the goal of this study is investigation of possibility of waste-MDF's composting after landfilling. To investigate biodegradation, this study was performed according to KS M ISO 14855-1, and there were two different soil conditions including a compost condition and an activated vermiculite condition as artificial soil. This experiment was tested for 40 days. The measurement of carbon-dioxide generation was processed every 24 hour in 1-2 week, and every 48 hour after 3 week. In the same days, MDF showed 24.4% of biodegradation in compost condition, and 6.2% in activated vermiculite. Also, the reference material of TLC (thin-layer chromatography) grade cellulose showed 26.4%, 11.4% in compost and activated vermiculite respectively. The dilution plate method was performed for biological analysis in the study. This experiment was used for investigation of inoculum's (Bacillus licheniformis) activity. As the result of bioassay, compost has more other germs include inoculum than activated vermiculite in the first week. Especially in the 2nd week, the reference material under the compost condition showed the most germ's activity, and also the biodegradation was the highest. Consequentially, compost condition was able to reduce a performing period of biodegradation testing than activated vermiculite. However, activated vermiculite could be stabilizing errors between repetition.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.1707-1711
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• 2009

우리나라는 정치, 경제, 사회, 문화 등 여러 분야에서의 발전과 국민들의 생활수준의 향상으로 최근 들어 물 소비량이 급격히 증가하고 있다. 또한, 수자원 관련 정보에 대한 국민들의 관심이 크게 증가하고 있으며, 이에 따라 국가에서는 수자원 관련 정보제공 창구를 마련하여 다양한 물 관련 정보를 제공하고 있다. 그러나 아직까지 다양한 분석 정보에 대해서는 제공되는 정보 항목이 다양하지 않으며, 이러한 분석 정보에 대한 제공 요구는 증가 추세에 있다고 할 수 있다. 또한 효율적인 수자원 계획을 수립하고 시행하기 위해서는 먼저 지역의 수자원 관련 현황을 분석하여 활용 가능한 수자원의 양을 명확하게 파악하여야 한다. 이와 함께 해당지역의 물 이용량을 파악하고 시간 및 공간에 따른 이용 경향을 분석하여 그 정보를 제공함으로써 보다 효율적인 수자원 계획 수립의 기반이 마련될 수 있다. 한편 수자원 관련 정책 수립 시 의사결정을 지원하기 위해서는 관련 정보를 분석한 후 지표 및 지수화하여 제공할 필요가 있다. 그러나 우리나라에서는 아직까지 수자원 관련 분양에 대한 지표 및 지수가 적극적으로 활용되고 있지는 못한 상황으로 최근 들어 수자원(물이용, 치수 및 하천환경) 분야에서 지표 및 지수를 이용한 관련 연구가 진행되고 있다. 본 연구에서는 지역 및 유역의 물이용 관련 현황 자료를 수집하여 분석함으로써 각종 수자원 관련 계획수립 및 정책 수립에 도움을 줄 수 있는 기반정보를 제시하고, 대중에게 정보를 제공하고자 한다. 물이용 특성을 평가할 수 있는 할 수 있는 개별지표를 개발하여 유역별로 분석하여 물이용 관련 현황을 분석하였으며 개별지표를 압력(pressure)-현상(state)-대책(response) 구조체계로 구성하여 중간지표를 분석하였다. 또한 이를 종합하여 유역의 물이용 현황을 파악할 수 있는 지수인 물이용 취약지수(Water use vulnerability index:WUVI)를 개발하여 물이용 관련 정보를 시공간적으로 분석함으로써 정부 및 지자체의 수자원 관련 정책 수립 등 업무 수행을 보다 효과적으로 지원할 수 있을 것으로 기대된다.

• Journal of Pharmaceutical Investigation
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• v.22 no.4
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• pp.301-306
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• 1992

The influence of phenobarbital (PB) pretreatment (75 mg/kg/day, i.p. for 4 days) on the metabolite kinetics of diltiazem (DTZ) was studied in rats in order to elucidate the effect of esterase induced by PB on the formation of DTZ to desacetyldiltiazem (DAD), DAD was injected via portal vein (3 mg/kg) to the control and PB-pretreated rats, The intrinsic hepatic clearance of DAD was significantly increased by PB pretreatment and the absolute bioavailability of DAD was significantly decreased in the PB-pretreated rats. According to the hepatic biotransformation model of DTZ, the fraction of systemic clearance of DTZ which forms DAD $(G_{mi})$ was different from that of DTZ which furnishes the available DAD to the systemic circulation $(F_{mi})$ in control rats. This result shows that DTZ was suspected of the sequential hepatic first-pass metabolism. On the other hand, PB pretreatment enhanced the $G_{mi}$ value of DTZ by 44%. It may be concluded that the deacetylation of DTZ to DAD in rats is increased by the esterase induced by PB but the transfer rate of DAD immediately formed from DTZ into systemic circulation is not affected by PB due to the 27% decreased absolute bioavailability of DAD resulting from PB pretreatment.