• 대한위생학회:학술대회논문집
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• 대한위생학회 2000년도 국제 학술 심포지움 및 총회
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• pp.1-21
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• 2000

Recently, indoor air pollution from chemical compounds has been attracting attention. Sick-house syndrome and hypersensitivity to chemical compounds are also being recognized as health problems. In this presentation, the situation of indoor air pollution by chemical compounds in Japan will be explained.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2021년도 추계학술대회
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• pp.40-40
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• 2021

• 디지털콘텐츠학회 논문지
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• 제19권4호
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• pp.731-737
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• 2018

추천 시스템은 컨텐츠, 온라인 커머스, 소셜 네트워크, 광고 시스템 등 많은 분야에서 사용자가 관심 있을 만한 정보를 선별 제안함을 목적으로 활발하게 연구되고 있다. 그러나 과거 선호도 데이터를 기반으로 제안하는 추천시스템이 많고 과거 데이터가 적거나 없는 사용자를 대상으로는 제공하기 어려우므로 낮은 성능을 보인다는 부문에서 문제점이 있다. 따라서 더욱 고차원적인 데이터 분석에 관한 관심이 증가하고 있고 Matrix Factorization이 주목받고 있다. 이 논문은 그 중 추천시스템에서 주목받는 Factorization Machines Learning(FM)모델과 고차원 데이터 분석인 High-order Factorization Machines Learning(HOFM)의 비교와 재연을 연구하고 제안 한다.

• Carbon letters
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• 제17권1호
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• pp.18-28
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• 2016

Global warming is considered one of the great challenges of the twenty-first century. In order to reduce the ever-increasing amount of methane (CH₄) released into the atmosphere, and thus its impact on global climate change, CH₄ storage technologies are attracting significant research interest. CH₄ storage processes are attracting technological interest, and methane is being applied as an alternative fuel for vehicles. CH₄ storage involves many technologies, among which, adsorption processes such as processes using porous adsorbents are regarded as an important green and economic technology. It is very important to develop highly efficient adsorbents to realize techno-economic systems for CH₄ adsorption and storage. In this review, we summarize the nanomaterials being used for CH₄ adsorption, which are divided into non-carbonaceous (e.g., zeolites, metal-organic frameworks, and porous polymers) and carbonaceous materials (e.g., activated carbons, ordered porous carbons, and activated carbon fibers), with a focus on recent research.

• 농촌계획
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• 제21권4호
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• pp.55-63
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• 2015

This study aims to assess Green-Tourism accessibility of Rural Experience Village and then prepare improvement methods. To do this study, we surveyed 25 operators of Rural Experience Village in Chungbuk. We used 21 issues in all for analysis and the following shows a summary of major results. Rural Experience Village has a generally hard time conducting facility maintenance. Countermeasures for maintenance are required to run smoothly. Since Rural Experience Village has difficulty attracting visitors to the village, countermeasures are needed to attract visitors through business promotion. The results of assessing Green-Tourism accessibility showed us that some villages are a lot more accessible than others. Therefore, it is necessary that there should be improvements of Green-Tourism accessibility by attracting visitors and increasing operating days so that Green-tourism accessibility can be enhanced. In spite of its high level of accessibility since Rural Experience Village belonging to Goesan has low profitability, it is especially imperative that we establish more positive project promotion to cover it.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2010년도 춘계학술발표대회
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• pp.19.1-19.1
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• 2010

The process of manufacturing printed electronics using printing technology is attracting attention because its process cost is lower than that of the conventional semiconductor process. This technology, which offers both a lower cost and higher productivity, can be applied in the production of organic TFT (thin film transistor), solar cell, RFID(radio frequency identification) tag, printed battery, E-paper, touch screen panel, black matrix for LCD(liquid crystal display), flexible display, and so forth. In general, in order to implement printed electronics, narrow width and gap printing, registration of multi-layer printing by several printing units, and printing accuracy of under $20\;{\mu}m$ are all required. These electronic products require high precision to the degree of tens of microns - in a large area with flexible material, and mass productivity at low cost. As such, the roll-to-roll printing process is attracting attention as a mass production system for these printed electronic devices. For the commercialization of this process, two basic electronic ink technologies, such as conductive ink and polymers, and printing equipment have to be developed. Therefore, this paper addressed basis design and test to develop fine patterning equipment employing the roll-to-roll printing equipment and electronic ink.

• 한국유통학회:학술대회논문집
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• 한국유통학회 2006년도 춘계학술대회 발표논문집
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• pp.73-101
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• 2006

중국 경제의 눈부신 성장에 따라 아웃바운드 관광도 세계적으로 가장 빠른 속도로 성장하였다. 성장잠재력이 무궁한 중국 아웃바운드 관광시장을 앞두고 세계 각국의 경쟁이 점점 치열해지고 있다. 이와 같은 상황에서 중국 아웃바운드 관광시장에 대한 이해와 효과적인 관광객 유치전략 개발이 한국 관광업체에게 아주 중요하다. 따라서 본 연구는 먼저 중국 아웃바운드 관광시장과 중국인 방한 실태 고찰을 통해서 인구, 정치, 경제, 문화, 소비자, 경쟁자 등 환경요소를 조사하였다. 그 다음에 SWOT분석을 통해서 한국 관광업체에게 주어지는 기회와 위협, 한국 관광업체에서 가지고 있는 감점과 약점을 파악하였다. 그리고 SWOT분석 결과에 따라 중국 관광객 유치를 위한 마케팅 전략을 제시하고, 마케팅 전략에 있어서 유통업의 역할을 제시하였다.

• 통상정보연구
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• 제9권3호
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• pp.33-57
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• 2007

This study tests e-business performance difference of the inter group by strategy type through the cluster analysis, after confirming the linear relationship between the e-business strategy type and its performance. According to the result of the study the effect on the e-business performance reveals to differ by the e-business strategy type. That is to say, while the firm's information system performance, e-business realization and the inter group competition dominance are affected positively by the e-process strategy, web application strategy and customer attracting strategy. This confirms that the information system performance, the realization performance and the competition dominance are affected by e - business strategy type. The key factor leading to the success of e-business is the commitment of e-process strategy and web application strategy. For the case of the customer attracting strategy the result shows the importance of the strategy. In the cluster group analysis, the additional analysis, the effect is seen to be more powerful in the firm's information system performance, e - business realization and securing the competition advantage for the case of the multiple strategy than that of single one. Accordingly, the firm needs to adopt the multiple strategy suited for the characteristic of the firm rather than the single strategy.

• 대한화학회지
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• 제19권2호
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• pp.116-122
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• 1975

Benzyl arenesulfonate와 피리딘과의 아세톤 용매중에서의 反應速度를 測定하였다. Benzyl arenesulfonate의 離脫基의 치환기효과는 p-MeO基 및 $p-NO_2$기를 除外하고는 Hammett 式에 잘 적용되었으며, 전자끄는기는 반응속도를 증가시켰다. 離脫基의 치환효과는 벤질炭素에 아민이 親核的으로 공격하여 전이상태에서 치환기의 電子끄는 능력이 C-N 結合의 形成과 C-O結合의 쪼개짐에 변화를 주고 있다는 사실로서도 설명이 되어진다. 치환기효과는 benzyl p-bromobenzeneslfonate가 benzyl p-nitrobenzenesulfonate보다 N-C結合이 tight 한 전이상태의 구조를 가지고 있음을 말해주며 이는 結合의 형성과 쪼개짐에 있어 Thornton의 $S_N2$전이상태 구조의 예상과도 잘 符合된다.

• 수산해양기술연구
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• 제50권3호
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• pp.310-317
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• 2014

This study was conducted to investigate the attractant substances of different solvent fractions of mackerel and tuna viscera. Mackerel and tuna viscera were extracted with methanol and the resultant were fractionated with n-hexane, chloroform, ethyl acetate, n-butanol and water. The chemical compounds such as free amino acid, fatty acid, nucleotide related compounds contents were estimated for mackerel, tuna viscera and various fractions. These fractions were also subjected to attracting experiments in water tank to estimate attracting effects. The aqueous fractions of mackerel and tuna viscera showed the highest attraction effect on swimming crab. The major chemical compounds of the aqueous fractions were histidine, taurine, cysteine, glutamic acid, inosine monophosphate (IMP) and inosine (HxR) for mackerel and arginine, glutamic acid, aspartic aid, alanine, IMP and hypoxanthin (Hx). Results indicated that higher polarity compounds, such as amino acid and nucleotide related compounds have higher attraction activities than nonpolar substances such as neutral lipid.