• Journal of the Korean association of regional geographers
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• v.13 no.1
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• pp.68-81
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• 2007

The purpose of this study was to analyze the perceptions of local residents towards the impact of Geumsan ginseng festival. This study was trying to examine the perception differences between groups of resident by tourism relatedness. Self-administered questionnaire survey was administered for the Geumsan residents. Frequency analysis, factor analysis, regression analysis, and t-test was administered for the perception differences. Using social exchange theory, it was revealed that tourism relatedness was relatively useful to test the perceptions differences of residents towards festival impacts. Tourism related residents perceived positive impacts more strongly and negative impacts Jess strongly compare to non related residents. The result suggested that residents' perception of festival impacts was dependent on the level of tourism relatedness and implications are drawn for community tourism policy and management.

• The Journal of the Korea Contents Association
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• v.9 no.11
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• pp.27-36
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• 2009

Standard electronic tax invoice is a document standard for electronically exchanging tax invoices, which have been used in the form of paper for proofing business transactions. This standard focuses on the aspect of exchanging electronic documents between businesses and between businesses and NTS(National Tax Service), so it is limited in expressing semantics and contexts of financial information explicitly and economically for reusing them after their exchanges. Above all, it is needed to consider that they can be employed to various applications of businesses including financial reporting and auditing because they contain basic financial information about taxes and that they are reported to NTS. In this perspective, this paper compares and analyzes how to compose standard electronic tax invoice documents in XBRL with concrete examples, focused on the expressability and applicability, and discusses the possibility of XBRL-based standard electronic tax invoices.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.10
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• pp.4658-4664
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• 2013

This paper presents the effects of the tube materials on the heat transfer performance of double-tube heat exchangers for the development of heat exchangers using deep sea water. Heat exchangers made of titanium, aluminum. stainless steel, iron, copper, and aluminum with carbon black 0.015mm and 0.15mm coating were tested. Also, the heat transfer rate of each heat exchanger was calculated by using EES program. The calculated values were compared with the experimental ones, and the deviations were less than 10%. From the above experiment and analysis, aluminum with carbon black 15 coating can be considered the most promising candidate for the replacement of titanium heat exchanger.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2003.11b
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• pp.315-318
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• 2003

본 연구에서는 NaCl 용응법에 의해 fly ash로부터 합성된 swelling mica의 다양한 이온의 교환특성과 이온교환이 결정구조에 미치는 영향을 규명함으로서 swelling mica에 의한 유해 방사능 물질 및 중금속의 효과적인 제거제로서의 활용 가능성을 조사하고자 하였다. 1가 양이온이 흡착된 FA-swelling mica의 $d_{001}$/ peak의 강도는 흡착된 이온의 직경이 클수록 감소하는 경향을 나타내었으나, $d_{001}$/ value는 흡착된 이온의 직경과 뚜렷한 상관관계가 없었다. 또한 FA-swelling mica의 NH4 이온의 흡착량은 133 $cmol^{+}$/kg, K 이온은 127 $cmol^{+}$/kg, Li 이온은 23 $cmol^{+}$/kg으로서 방사성 물질과 중금속 이온에 비해 낮은 경향을 나타내었다. 2가 양이온이 흡착된 FA-swelling mica의 $d_{001}$/ peak 강도와 $d_{001}$/ value는 이온의 직경에 관계없이 비슷한 값을 나타내었으며 1가 양이온의 흡착에 비해 구조적 안정성이 높았다. Sr 및 Ba 이온의 흡착반응은 느리고 지속적으로 일어났으며 Ca와 Mg 같은 2가 양이온에 비해 선택성이 훨씬 높은 것으로 나타났다. 또한 Sr 및 Ba 이온과 같이 직경이 큰 방사성 원소들은 swelling mica의 층간에 흡착되어 결정구조가 부분적으로 붕괴됨으로서 이온을 비가역적으로 고정하는 특성을 나타내었다. Zn, Cu, Cd 및 Pb 등의 중금속 이온이 흡착된 FA-swelling mica의 $d_{001}$/ value는 12.70~12.80$\AA$으로서 매우 일정하였으며, 이온 흡착에 의한 층간 팽창정도는 이온의 크기뿐만 아니라 수화정도에 따라 상이하였다. FA-swelling mica의 중금속 이온의 흡착은 층간 붕괴에 의해 일어나는 것으로 판단되며, 선택성과 흡착능력은 층간 붕괴속도와 비례하는 경향을 나타내었다. 또한 FA-swelling mica의 중금속 이온의 선택성은 Pb>Cu>Cd$\geq$Zn 순으로 나타났다.

• Korean Journal of Adult Nursing
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• v.13 no.1
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• pp.171-181
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• 2001

본 연구는 수술에 사용하는 생리식염수가 수술의 종류와 수술진행단계에 따른 오염수준을 파악하여 생리식염수의 적절한 교환시점과 교환방법을 제시하기 위하여 시도되었다. 1500 병상 규모의 대학병원에서 1명의 일반외과 의사가 집도한 37건의 수술을 대상으로 하였다. 37개의 수술 각각에서 피부 절개전, 장기절제 후, 그리고 피부 봉합시의 3 시점에서 수술에 사용된 생리식염수와 공기에 노출시킨 생리식염수에서 각각 50 mL의 생리식염수를 채취하여 얻은 균주의 수를 비교하였다. 공기에 노출시킨 생리식염수에 비해 수술에 사용된 생리식염수에서 균주가 보다 많이 검출된 것으로 나타났다. 특히 수술의 종류에 관계없이 수술 마지막 단계 즉 피부봉합 단계에서 수술에 사용된 생리식염수의 오염수준이 급격히 증가한 반면 공기에 노출시킨 생리식염수의 오염수준 변화는 미미했다. 수술에 사용한 생리식염수에서는 Enterococcus(9.5%), Enterobacter species(4.6%), E. col i(2.8%), Alcaligenes species(1.2%), Klebsiella species(0.9%) and Pasteurella multocida(0.8%) 등의 균주가 검출되었으나 공기에 노출시킨 생리식염수에서는 이러한 균종이 검출되지 않았다. 수술실의 공기가 수술에 사용하는 생리식염수의 오염요인으로 작용하기보다는 수술조직이 생리식염수의 오염요인으로 작용하는 것으로 사료된다. 특히 수술에 사용하는 생리식염수의 오염가능성을 최소화시키기 위해 수술소요 시간이 길어지거나 또는 오염 수술의 경우 절제부위가 봉합된 후에 수술에 사용하는 생리식염수, 생리식염수를 담는 용기 및 봉합에 이용되는 봉합감자 등을 새로이 준비하여 피부 봉합에 이용해야 할 것으로 사료된다.

• Journal of Korea Multimedia Society
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• v.6 no.5
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• pp.876-888
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• 2003

The U.S., Japan and Korea have realized the importance of establishing standards for eBook document formats and with government bodies, related industries and academic circles, OEB PS, JepaX and EBKS were established. However, compared to OEB of the U.S. and JepaX of Japan, EBKS contains different objective for establishment and different structures. As a result, for converting between documents of different standards, exact analysis of the document structures are called for and minimization of information loss when actually converting documents is required. Therefore, a method for explicit exchange between documents of different standards minimizing document structure is proposed and examples are looked at. As a result, in this paper, conversion possibilities between EBKS and OEB/JepaX are introduced and the result can be applied to cases when exchanging eBook standards and other formats.

• The KIPS Transactions:PartA
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• v.8A no.3
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• pp.279-286
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• 2001

This paper proposes a low power resource allocation and scheduling algorithm that minimized power consumption such as DSP circuit in high-level synthesis process. In this paper, we have used list-scheduling method for low power design in scheduling step. Also, it increase possibility to reuse input through resource sharing when assign resource. After scheduling, the resources allocation uses the power function in consideration of the result of calculating average hamming distances and switching activity between two input. First, it obtain switching activity about input value after calculate average hamming distances between two operator and find power value make use of bit pattern of the input value. Resource allocation process assign operator to minimize average hamming distance and power dissipation on all occasions which is allocated at each control step according to increase control step. As comparing the existed method, the execution time becomes fast according to number of operator and be most numberous control step. And in case of power that consume, there is decrease effect from 6% to 8% to be small.

• Applied Chemistry for Engineering
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• v.18 no.4
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• pp.391-395
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• 2007

This study investigated the feasibility of enhanced electrokinetic (EK) remediation of soil contaminated with approximately 20000 Pb-mg/kg. Enhanced EK remediation was evaluated by using mixed solution (0.3 M acetic acid and 0.03 M EDTA, EK-M) and by exchanging electrodes for preventing precipitation of metal hydrate. For the EK-M, the lead removal efficiency was only 2% lower than the case where 0.03 M EDTA was solely used (EK-Blank, EK-B). Considering the costly expense of EDTA, the application of EK-M would be economically viable. The efficiency of of EK-E was higher by 2% than the EK-B method. More impertantly, the pH values of entire soil packed column presented to be neutral (7~8) in the EK-E process. Unlike to EK-B and EK-M, the deposition of heavy metals to any specific area was avoided in the EK-E process.

• The Journal of Natural Sciences
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• v.6 no.1
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• pp.103-108
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• 1993

Zeolites were discovered as a natural mineral more than two hundred ago. In the beginning, the mineral was used as ion-exchange material and adsorbent. After the end of World War II , however, a variety of zeolites have become available in large amounts because of the establishment of low temperature synthesis and the discobery of natural zeolite deposits of sedimentary origin. Various uses of xeolite were developed utilizing the unique crystal strucrure and function of these minerals. In connection with this development remakable progress has also been made in basic stuides on the related geology and mineralogy, crystallization from sols and gels, structure, ion exchange, adsorption and cataiysis. As a result, zeolites, which had been known only as mineral specimens displayed in museums. established a firm position among the high-technology masterials with excellent functional capabilities.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.5 no.3
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• pp.138-143
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• 2012

In the study, we were develop unification of examination paper switchboard that reduced the hassle about previously glucose measurement. Examination paper case was produced to magazine for minimize when you use the previously products occurred hand pollution or loss rate. And, Quantity of examination paper can be checked in real time by seeking the convenience of patients. In this study, we selected one model but you can product any examination paper case. Data was construct through surveys to questionnaires and satisfaction. Purchasing was received to high rating 67%. In this study, we were trying minimize inconvenience during self scan for diabetes patient. Further, we were suggest various products that were improve the functionality and practicality through practicality in design.