• Proceedings of the Korean Society of Computer Information Conference
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• 2023.01a
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• pp.321-322
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• 2023

본 논문에서는 Scikit-learn 패키지의 LinearRegression 모델과 Keras 딥러닝 모델을 활용하여 수도권 도시 환경 요인에 따른 범죄 발생 건수를 예측 모델을 제안한다. 연구 방법으로 범죄 발생과 유의미한 관계가 있다고 파악되는 수도권의 각 자치구 별 데이터셋을 분석하여, CCTV, 파출소, 가로등의 수가 범죄 발생에 유의미한 영향을 끼치는 것을 확인하였다. 독립 변수들 간에 Scale을 줄이고자 정규화를 진행했고, 종속변수의 정규성 확보를 위해 로그변환을 취했다. 손실 함수는 회귀문제에서 사용되는 'relu'함수를 사용했고 모델의 성능을 확인할 수 있는 지표로 MSE(Mean Squared Error)를 사용해 모델을 구성하였다. 본 논문에서 설계한 이 프로그램은 범죄 발생율이 높은 지역구에 경찰 인력의 추가적 배치, 안전 시설 확충 등 실무적 조치를 취함에 있어 근거를 제공할 수 있을 것으로 사료된다.

• Journal of Korea Technology Innovation Society
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• v.21 no.1
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• pp.1-32
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• 2018

This study has been motivated by the awareness that studies on science and technology policy do not have an independent academic identity in Korea as of 2017. This research has been analyzed 19 books that have covered science and technology policy published in Korea and explored whether those have a definition of discipline and core research scope which are the key elements forming academic paradigm. As a result, this study concludes provisionally that studies on science and technology policy in Korea are still at a stage that has not yet formed a paradigm. Therefore, this work newly proposes the definition of discipline and research scope necessary to complete the paradigm of studies on science and technology policy based on this conclusion. This paper has firstly defined that studies on science and technology policy are the policy-oriented discipline. It is (1) promoting the development of science and technology itself by studying and analyzing the various phenomena of politics, economy, society, and culture related to science and technology activities as well as science and technology and (2) makes the national and public sector improve problem-solving competence using science and technology. This work also proposes a research scope consisting of four research areas such as (1) policy process of science and technology, (2) public management of science and technology, (3) R&D management and (4) technology innovation. 'Policy process of science and technology' and 'public management of science and technology' among four research areas are the new research ones reflecting the definition of studies on science and technology policy proposed in this paper. Additionally 'R&D management' and 'technology innovation' are the traditional research areas which have also included existing researches regarding science and technology policy.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.01a
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• pp.241-242
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• 2022

지속 가능한 발전을 위해 전기자동차의 관심 및 수요가 늘어나는 상황에서 전기자동차 충전소 및 주차공간에 대한 정보 습득은 더욱 중요해졌다. 서비스 이용자는 본인의 위치를 기반으로 하여 가까운 주차장과 전기 충전소의 유무를 확인할 수 있는 DBMS를 설계하고 구축하였다. 이용자에게 주차장 및 전기 충전소에 대한 정보를 얻는 과정에서 더욱 편리함을 안겨주는 것을 목표로 하였다.

• Asian Journal of Innovation and Policy
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• v.3 no.1
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• pp.25-49
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• 2014

We wanted to show the different group dynamics of factors for success and failure cases for technology commercialization in small technology-based firms. Existing studies are based on product level, project level, division level or firm level. We deal with technology level, and at small-technology-based firms. This is a longitudinal case study based on 8 cases from Korea. Our study on technology level is a first trial in success and failure studies unlike all existing studies. As a first step, we introduced new categories and factors such as technology attributes and CEO reflecting data, and especially a new concept of launch readiness level. Finally, we adopted correspondence analysis to show the group dynamics. The results are as follows; Technology factors are the most important factors. Second, resource-based factors are more critical in failure cases than success cases and technology factors are more critical to success.

• Advances in Traditional Medicine
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• v.5 no.1
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• pp.21-28
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• 2005

The leaf extracts of Araucaria bidwillii Hook. (Araucariaceae) were evaluated for their cytotoxic effect in various human cancer cell lines. Preliminary investigation by brine shrimp lethality assay indicated that $LC_{50}$ value of various successive extracts were found to be less than $1000\;{\mu}g/ml$, where the ethyl acetate extract showed maximum activity of less than $100\;{\mu}g/ml$. Further cytotoxic evaluation of various leaf extracts of Araucaria bidwilli Hook was carried out in four different human cancer cell lines-acute myeloblastic leukemia (HL-60), chronic myelogenic leukemia (K-562), breast adenocarcinoma (MCF-7) and cervical epithelial carcinoma (HeLa). Cytotoxicity was assessed by trypan blue dye exclusion method and 3-(4,5-dimethyl thiazole-2yl)-2,5-diphenyl tetrazolium bromide (MTT) reduction assay. From the present investigation it was found that the ethyl acetate and methanol extract of Araucaria bidwilli Hook was found to be more effective in leukemic cell lines and was less effective in MCF-7 and HeLa. The $IC_{50}$ value of the ethyl acetate extract in leukemic cell lines was found to be $28.18\;and\;34.64\;{\mu}g/ml$ and methanol extract was found to be $33.11\;&\;39.81\;{\mu}g/ml$. It can be concluded that various extract from the leaves of Araucaria bidwillii Hook. posses cytotoxic activity tested in brine shrimps and various human carcinoma cell lines.

• Journal of Science and Technology Studies
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• v.9 no.1
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• pp.135-142
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• 2009

• Journal of Science and Technology Studies
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• v.9 no.1
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• pp.129-134
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• 2009

• Journal of Science and Technology Studies
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• v.10 no.2
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• pp.175-180
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• 2010

• Journal of Science and Technology Studies
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• v.16 no.1
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• pp.91-98
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• 2016

• Journal of Science and Technology Studies
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• v.14 no.1
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• pp.185-191
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• 2014