USN 센서노드 기술 동향

김지은,김세한,정운철,김내수,Kim, J.E.,Kim, S.H.,Jeong, W.C.,Kim, N.S. 한국전자통신연구원 2007 전자통신동향분석 Vol.22 No.3

인간과 사물, 컴퓨터간의 유기적인 관계 및 통신을 위하여 유비쿼터스 센서네트워크기술은 다양한 분야에서 응용 및 기술 개발이 이루어지고 있다. 센서노드는 유비쿼터스 센서네트워크 시스템에서 가장 기본적인 구성 요소로 핵심 요소 기술에 대한 IPR확보 및 센서노드의 소형화, 지능화 기술 개발에 노력하고 있다. 이에 센서노드의 구성요소와 센서노드 전송 기술에 대한 기술 동향과 현 상용화 기술과 제품에 대한 국내외동향 및 기술 전망에 대하여 살펴보고자 한다.

해외 주요국의 디지털 통상 정책 및 무역 협정 규범 동향

김지은,Kim, J.E. 한국전자통신연구원 2022 전자통신동향분석 Vol.37 No.5

Digital trade rules are crucial in supporting the digital economy as the rules effectively reduce unnecessary trade barriers. This study introduces various approaches that major countries take regarding digital trade policies and rules. Comprehensive and Progressive Agreement for Trans-Pacific Partnership has introduced comprehensive rules on e-commerce, including binding articles on the free flow of information, location of computing facilities, and source code. More recent e-commerce provisions or digital trade agreements cover wider range of issues, from cyber security, artificial intelligence, and data innovation to electronic invoicing and payments. Multilateral negotiations on digital trade rules, including the World Trade Organization E-commerce Joint Statement Initiatives and Indo-Pacific Economic Framework, are in progress. Thus, countries involved are expected to respond to new digital trade issues with long-term strategies considering domestic policy objectives.

소동물용 뇌자도 측정 시스템 개발

김지은,김인선,강찬석,권혁찬,김진목,이용호,김기웅,Kim, J.E.,Kim, I.S.,Kang, C.S.,Kwon, H.,Kim, J.M.,Lee, Y.H.,Kim, K. 한국초전도학회 2011 Progress in superconductivity Vol.13 No.1

We developed a four-channel first order gradiometer system to measure magnetoencephalogram for mice. We used double relaxation oscillation SQUID (DROS). The diameter of the pickup coil is 4 mm and the distance between the coils is 5 mm. Coil distance was designed to have good spatial resolution for a small mouse brain. We evaluated the current dipole localization confidence region for a mouse brain, using the spherical conductor model. The white noise of the measurement system was about 30 fT/$Hz^{1/2}$/cm when measured in a magnetically shielded room. We measured magnetic signal from a phantom having the same size of a mouse brain, which was filled with 0.9% saline solution. The results suggest that the developed system has a feasibility to study the functions of brain of small animals.

디지털 의류 기술 개발 동향

김지은,정현태,조일연,Kim, J.E.,Jeong, H.T.,Cho, I.Y. 한국전자통신연구원 2009 전자통신동향분석 Vol.24 No.5

디지털 의류는 디지털 기술이 의류에 자연스럽게 융합되면서 옷을 입은 사람뿐만 아니라 외부의 디지털 기기와도 자유로운 소통이 가능한 의류이다. 1990년 후반부터 유럽과 미국에서는 섬유기술에 IT 기술을 융합하는 연구가 계속되고 있으며, 직물부품 및 직물회로를 구현하여 의류에 적용한 바 있다. 초기 디지털 의류는 군복과 같은 특수용도로 개발되었으나 요즘에는 MP3 플레이어 내장 의류, 색깔이 변하는 의류, 헬스케어 의류 등 일상생활용도의 의류가 개발되는 추세이다. 디지털 의류는 신소재 산업, 센서 산업 등 기술 집약 산업의 활성화는 물론, 기존 전통 산업에 IT 기술을 접목함으로써 섬유, 패션, 의류산업의 확장과 활성화에 큰 역할을 할 것으로 전망된다. 앞으로 우리나라가 디지털 의류 시장을 선도하기 위해서는 섬유 IT 및 의류 IT융합 핵심기술의 확보가 시급하다. 본 고에서는 섬유 IT 융합분야의 이해를 높이고자 디지털 의류 기술 개발의 동향을 살펴보고 향후 기술발전 방향을 전망해 보고자 한다.

디지털 보안에 대한 해외 주요국의 통상 규범 동향

김지은,J.E. Kim 한국전자통신연구원 2023 전자통신동향분석 Vol.38 No.4

Trade rules in service and digital sectors mainly focus on reducing regulatory uncertainties by improving transparency and minimizing unnecessary requirements. Recognizing the importance of digital trade rules and trade in information and communication technology (ICT) sectors, governments worldwide have rapidly adopted and expanded rules on free flow of data, personal data protection, electronic authentication, and cybersecurity. On the other hand, advances in technology have led governments to face multiple threats related to cybersecurity, intellectual property (including that related to source code and algorithms), and unauthorized access to proprietary information of their suppliers. This study presents digital trade rules related to digital security emphasizing cybersecurity, source code, and ICT products that use cryptography in different trade agreements. Additionally, it introduces various approaches that major countries are taking to both address digital security issues and seek balance between security enhancement and trade liberalization.

국내 CO₂ 해양지중저장 실증 사업에의 활용을 위한 CO₂ 모니터링 기법 분석

김지은(J.E.Kim),허철(C.Huh),강성길(S.G.Kang),백종화(J.H.Baek) 한국해양환경·에너지학회 2013 한국해양환경공학회 학술대회논문집 Vol.2013 No.5

로드셀을 이용한 전동 킥보드 탑승 안전장치 최적설계

김지은(J. E. Kim),김재열(J. Y. Kim),이진산(J. S. Lee),최정욱(J. U. Choi) 한국기계가공학회 2022 한국기계가공학회 춘추계학술대회 논문집 Vol.2022 No.4

육우의 유전적 표식로서 생화학적 유전형질의 다형현상에 관한 연구 1 . 혈액단백질 및 효소의 유전적 다형현상

정의용(E . R . Chung),정호영(H . Y . Chung),김지은(J . E . Kim),전기준(K . J . Chun),류충현(C . H . Yu),한상기(S . K . Han),신유철(Y . C . Shin) 한국축산학회 1993 한국축산학회지 Vol.35 No.1

Biochemical polymorphic loci of blood protein and enzymes, albumin(Al), trans ferrin(Tf), hemoglobin(Hb), amylase-1(Am-1), carbonic anhydrase(CA) and ceruloplasmin(Cp), as genetic markers for three imported beef cattle breeds (131 Angus, 130 Hereford and 56 Charolais) in Korea were analyzed by using starch gel electrophoresis. The genotype distributions and gene frequencies from the phenotypes were estimated at these loci for each breed. At the A1 locus, gene frequencies of Al^A and Al^B were 1.00 and 0.00 for Angus, 0.99 and 0.11 for Hereford and 0.96 and 0.04 for Charolais, respectively. Gene frequencies of Tf^A, Tf^D1 , Tf^D2 and Tf^E in Tf^E locus were 0.485, 0.111, 0.216 and 0.278 for Angus, 0.422, 0.355, 0.215 and 0.008 for Hereford and 0.232, 0.527, 0.233 and 0.018 for Charolais, respectively. Gene frequencies of Hb^A and Hb^B in Hb locus were estimated to be 1.00 and 0.00 for Angus and Hereford, and 0.837 and 0.163 for Charolais, respectively. Gene frequencies of Am^A, Am^B and Am^C in Am locus were estimated to be 0.035, 0.328 and 0.637 in Angus, 0.070, 0.440 and 0.490 in Hereford and 0.540, 0.491 and 0.455 in Charolais, respectively. In CA locus, the frequencies of gene CAF and CAS were found to be 0.103 and 0.897 for Angus, 0.165 and 0.835 for Hereford and 0.577 and 0.423 for Charolais, respectively. Gene frequencies of Cp^F and Cp^S in Cp locus were 0.637 and 0.363 in Angus, 0.640 and 0.160 in Hereford and 0.938 and 0.062 in Charolais, respectively. In comparing the gene frequencies of each locus among three breeds, significant differencies in the gene frequencies between Angus and Charolais were found in all loci examined. Also, significant differencies in the gene frequencies of the Tf, Am, CA and Cp loci except for Al and Hb loci were recognized between Angus and Hereford and between Hereford and Charolais, respectively. Consequently, it was found that there were marked differences in the genetic constitution between beef cattle breeds.

무증상 역류성 식도염의 자연 경과 -건진검진자를 대상으로 한 후향적 연구-

한성혁 ( S. H. Han ),김재준 ( J. J. Kim ),손희정 ( H. J. Son ),김영호 ( Y. H. Kim ),백승운 ( S. W. Paik ),이종철 ( J. C. Rhee ),최규완 ( K. W. Choi ),김지은 ( J. E. Kim ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-

<목적> 역류성 식도염은 서구에서 전 인구의 3-4%의 유병률을 보이는 흔한 질환이며 국내 에서도 건강 검진자를 대상으로 한 몇몇 연구에서 유병률이 2%정도로 보고하고 있다. 전형적인 증상이 있는 역류성 식도염에서 치료의 필요성에 대해서는 논란의 여지가 없지만 증상이 없이 우연히 상부 위장관 내시경을 시행하여 역류성 식도염으로 진단된 경우 자연경과에 대해서는 알려져 있지 않아 치료방침에 대한 기준이 없는 실정이다. 이에 연구자들은 무증상 역류성 식도염

육우의 유전적 표식로서 유단백질의 다형현상에 관한 연구

정의용(E . R . Chung),류충현(C . H . Yu),정호영(H . Y . Chung),김지은(J . E . Kim),전기준(K . J . Chun),한상기(S . K . Han),신유철(Y . C . Shin) 한국축산학회 1993 한국축산학회지 Vol.35 No.3

Milk protein polymorphisms of as,-casein (αS₁-CN), β-casein (β-CN), κ-casein (κ-CN) and β-lactoglobulin (β-LG) loci as genetic markers for three imported beef cattle breeds (86 Angus, 92 Hereford and 32 Charolais) in Korea were analyzed by electrophoresis. On the basis of the marker genotype and gene frequencies at these polymorphic loci, the genetic structure of each breed population was analyzed, and the genetic variability within population was quantified, then the genetic relationships among breeds were determined. As for the marker gene and genotypes of each milk protein polymorphic locus, three genotypes, BB, BC and CC, controlled by two alleles (αS₁-CN^B and αS₁-CN^C) at αS₁-CN locus, tcn genotypes, A¹A¹, A¹A², A²A², A¹B, A²B, BB, A¹C, A²C. BC and CC, controlled by four alleles (β-CN^(A1), β-CN^(A2), β-CN^B and β-CN^C at β-CN locus, three genotypes. AA, AB and BB, controlled by two alleles (κ-CN^A and κ-CN^B) at κ-CN locus and three genotypes. AA, AB and BB. controlled by two alleles (β-LG^A and β-LG^B) at β-LG locus were identified among breeds. For the αS₁-CN locus the BB was the most common type (over 80%) in all three breeds. In the β-CN locus the prevalent genotypes were A²A²(65.8%) for Angus, A¹A²(35.6%) and A¹A¹(32.2%) for Hereford and A²A²(19. 3%), A¹B(19.3%), A²B(16.1%) and A²C(12.9%) for Charolais. At the κ-CN locus the highest frequency of the AA genotype(61.7 and 78.0% resp.) was observed in Angus and Hereford, whereas the BB genotype was extremely low. However, in Charolais the AB(38.7%) and BB(38.7%) genotypes were much more frequent than the AA genotype(22.6%). The most frequent genotypes at the β-LG locus were BB(63.9%) in Angus, AB(38.3%) and BB(35.1%) in Hereford and AA(50.0%) in Charolais. The most common casein(αS₁-, β- and κ-CN) genotype combinations(haplotype) in Angus, Hereford and Charolais were BB A²A² AA(33.0%), BB A¹A² AA (29.1%) and BB BA¹ AA(16.1%), respectively. In all breeds the frequency of the αS₁-CN^B gene ranging from 0.891 to 0.967 was overwhelmingly higher than that of the αS₁-CN^C gene. The highest gene frequency of β-CN locus was β-CN^(A2)(0.766) in Angus, β-CN^(A1)(0.511) in Hereford and β-CN^(A2)(0.371) and β-CN^B(0.306) in Charolais. Of the two genes in κ-CN locus the κ-CN^A gene(0.759 and 0.879 resp.) dominated in Angus and Hereford, while the κ-CN^B gene(0.581) was the most common in Charolais. In the β-LG locus the β-LG^B (0.797) and β-LG^A(0.641) genes were predominant in Angus and Charolais, respectively, whereas Hereford had an approximately equal distribution of β-LG^A(0.475) and β-LG^B(0.543). Significant differences between breeds were found at the gene frequencies of the β-CN, κ-CN and β-LG loci except for αS₁-CN locus. From the comparison of the data by measuring the average heterozygosity, effective numbers of alleles and gene homogeneity, the genetic variability within breed population was greatest for the Charolais, followed by the Hereford and Angus. In comparison of genetic identity, genetic distance and dendrogram calculated from the marker gene frequencies of milk protein polymorphic loci, the most close relationship was obtained between the Angus and Hereford and the lowest genetic similarity was obtained between the Angus and Charolais. And the Korean native cattle had close relationship with the Angus.