연약점토지반에 설치된 IER 지주식 흙막이의 효과적인 수평변위억제 방법에 관한 연구

김자영,임종철,서민수,김창영,박은경,박태건,Kim, Jayoung,Im, Jong-Chul,Seo, Minsu,Kim, Changyoung,Park, Eun Kyeong,Park, Tae Keon 한국지반공학회 2017 한국지반공학회논문집 Vol.33 No.10

기존 흙막이 공법을 개선함으로, 자립이 가능하게 IER공법이 개발되었다. IER 공법의 안정성은 실내모형실험과 현장실험을 통해서 확인되었다. 특히, 점토지반에서의 실내모형실험의 결과 상당한 변위 감소효과를 확인할 수 있었다. 본 연구에서는 IER을 점토지반에 실제 적용하여 계측데이터를 수집하였으며, 이것을 이용하여 연약점토지반에서의 적용성에 대해 분석하였다. 그리고 수치해석을 통해 동일한 개수의 H-pile이 적용된 일열 H-pile 흙막이에 비해서 IER 공법의 수평변위가 70.9% 감소하는 것을 확인하였다. 그러므로 IER 공법을 연약점토지반에 적용하면 높은 수평변위억제효과로 인해 지반의 안정성은 상당히 많이 증대될 것으로 판단된다. 또, 점토지반에서의 수평변위억제방법으로 전면지주의 근입부에 DCM보강을 제안하여, 수치해석을 통해 DCM 최적의 보강위치를 분석하였다. 그 결과, 굴착저면에서 전면지주의 근입부의 중간지점까지 DCM 보강하는 것을 제안하였다. A self-supported temporary excavation method called Inclined Earth Retaining structure (IER) has been developed by improving an existing excavation method. The stability of the IER was proved with both model tests and field tests. Especially, the results of the model tests proved that the lateral displacement of a model retaining wall was significantly reduced in clay. In this study, the applicability of the IER installed in the soft clay ground is estimated by analyzing survey data collected in the construction field. The results of FE analysis show that the lateral displacement of the IER decreased by 70.9% of that of a single row, self-supported retaining wall using the same number of H-piles. Thus, using the IER method in the soft clay ground will increase the stability of the excavated ground with the effect restraining its lateral displacement. Furthermore, using Deep Cement Mixing (DCM) to the upper half embedded depth of front support is recommended as a subsidiary method of reducing the lateral displacement of IER in the soft clay ground based on FE analysis results.

근로 장애인의 장애수용도가 직무만족도에 미치는 영향에 대한 자아존중감의 매개효과 검증

김자영 ( Kim Jayoung ) 한국보건사회연구원 2018 保健社會硏究 Vol.38 No.3

본 연구의 목적은 근로 장애인의 장애수용도가 직무만족도에 영향을 미치는 데 있어서 자아존중감의 매개효과를 검증하는 것이다. 이를 위해 2016년 장애인고용패널조사의 2차 웨이브 1차 조사 자료를 사용하여 각 변인들이 미치는 영향력과 변인들 간의 관련성을 분석하고자 Amos 20.0을 활용한 경로분석을 실시하였다. 근로 장애인의 장애수용도는 자아존중감과 직무만족도에 각각 정적인 방향으로 영향을 미치는 것으로 나타났으며, 그리고 장애수용도가 직무만족도에 영향을 미치는 데 있어서 자아존중감의 부분 매개효과가 보이는 것으로 확인되었다. 이러한 결과에 근거하여 장애인 근로자들 중에서 장애수용도정도가 낮은 근로 장애인들을 대상으로 음악 및 미술치료, 집단 상담 등 자아존중감을 높이는데 중요한 역할을 하는 프로그램들을 적극적으로 실시할 필요가 있다. This study investigated the acceptance of disability effects on job satisfaction of workers with disability and analyzed whether the effect is mediated by self-esteem. This study used 1st year data of second wave 2016 Panel Survey of Employment for the Disabled (PSED) and employed Path analysis with A-MOS. The main research findings of this study were as follows: First acceptance of disability are found to have direct effect on self-esteem and job satisfaction. Second, we found not full but partial mediating effect of self-esteem between the acceptance of disability and job satisfaction. On the basis of the research, I suggested that various self-esteem improvement programs, including music and art therapy, are urgently needed for workers with disability with low acceptance of disability in order to maintain their job satisfaction.

관할권 중첩수역 해양공동개발에 관한 국제법 체제와 한일 대륙붕 공동개발협정의 재조명

김자영(KIM Jayoung) 대한국제법학회 2015 國際法學會論叢 Vol.60 No.2

해양공동개발은 대륙붕 중첩지역에서 연안국의 주권적 권리를 최대한 보호하고 공유자원의 형평한 분배의 균형을 달성하기 위해 발전해왔다. 해양공동개발의 사례는 특히 여러 연안국이 인접해있는 반폐쇄해를 중심으로 수적 측면에서도 지리적 다양성의 측면에서도 전세계적으로 급속히 확산되어, 관할권 중첩수역에서의 공동개발협정은 연안국들이 가장 선호하는 해양공동개발 협력체계로 자리매김했다. 대륙붕경계 중첩수역에서의 공동개발협정은 유엔해양법협약 제83조 3항에 규정된 잠정약정에서 그 근거를 찾을 수 있다. 하지만 동 조항에 규정된 신의성실한 교섭의 의무와 상호자제의 의무는 관련 문제들을 명확히 설명하지도 해결해주지 못한다. 1969년 ICJ 북해대륙붕사건 이후 국제재판소는 해양경계획정에 관한 분쟁을 해결함에 있어서 공동개발제도와 공동개발구역의 설정을 지속적으로 권고해왔다. 해양공동개발에 관한 다수의 국가실행이 확인됨에도 불구하고,국가들에게 해양공동개발을 요구하는 국제관습법상의 의무의 존재는 확신할 수 없다. 한국은 인접국인 중국·일본과 대륙붕 경계를 획정하지 못한 상황으로, 관할권 중첩으로 인한 분쟁의 소지가 많다. 그러나 해양공동개발에 관한 국제법상 의무를 확인하기 어려우므로 중국과 일본에게 공동개발을 강제할 수는 없다. 그러나 한·중·일 삼국 간 해결되기 어려운 영유권 문제와 해양경계획정의 협상의 장기화 및 그 결과까지 고려했을 때 한국이 선택할 수 있는 실리적 선택 중 하나는 해양공동개발일 수 있다. 따라서 한국은 해양공동개발 관련 국제법 연구와 함께 주변국과의 해양경계협상 전략의 일환으로 해양공동개발에 관한 정책적 고민이 필요한 시점이다. Maritime Joint development has developed to ensure the balance between protecting Coastal States’s sovereign rights and allocating shared natural resources equitably in the overlapping continental shelves. Cases of joint development for offshore oil and gas resources have expanded increasingly around tire world, both in terms of its number of cases and geographical distribution, particularly around tire semi-enclosed seas surrounded by several coastal states. Joint development agreement in the overlapping claims area is main form for maritime joint development, as it is one of the most preferred cooperative mechanisms among coastal states. Joint development agreement in the overlapping continental shelf is based on tire provisional arrangement under article 83, paragraph 3 of United Nations Convention on the law of the sea of 1982 (UNCLOS). However, the obligation to negotiate in good faith and of mutual restraint under this article 83(3) do not provide clear and sufficient explanations on all questions and problems related to maritime joint development. International courts have continued to recommend a joint development zone instead of determining the continental shelf after International Court of Justice (ICJ) stated tire possibility of joint development in the North Sea Continental Shelf Cases of 1969. However, despite a number of State practice regarding joint development of offshore oil and gas, it is uncertain whether there is an obligation in customary international law to cooperate maritime joint development or enter into joint development agreement. Korea has the potential to spark diplomatic and international legal disputes, as it has not delimited boundaries of its continental shelf with its neighboring States. Nevertheless, Korea cannot compel China and Japan to cooperate for maritime joint development, because it is difficult to argue for the obligation to enter into joint development agreement under international law. However, considering the results from prolonged negotiations with territorial disputes between Korea, China and Japan, trilateral joint development in the overlapping continental shelf is one of the most practical ways for Korea. Reflecting on the Korea’s experience and lessons of other successful joint development cases, Korea should actively develope more practical joint development strategy to China and Japan.

환경 불확실성에 대한 한국 문화콘텐츠 기업들의 대응: 전략적 선택과 조직구조화를 중심으로

김자영(Kim, Jayoung),김병수(Kim, Byung-Soo) 한국문화산업학회 2023 문화산업연구 Vol.23 No.4

주관적 계층의식과 사회자본이 기부행위에 미치는 영향

김자영 ( Kim Jayoung ),김두섭 ( Kim Doo-sub ) 한국보건사회연구원 2013 保健社會硏究 Vol.33 No.2

이 논문은 개인이 지닌 주관적 계층의식과 사회자본이 기부행위에 미치는 영향력을 분석하는 것을 목적으로 한다. 기부는 친사회적 동기에서 이루어지는 행위이며, 객관적인 사회경제적 지위 못지않게 자신의 지위에 대한 주관적 인식의 영향을 받는다. 이 논문에서는 자신의 계층지위를 높게 인식할수록 기부행위에 적극적일 것이라는 가설의 검증이 이루어졌다. 또한, 사회자본의 하위개념으로 연결망의 크기와 유형을 도입하고, 이들을 변수화하여 기부행위에 미치는 영향력을 살펴보는데 분석의 초점을 맞추었다. 분석을 위해서는 통계청의 『2011년 사회조사』 원자료를 활용하였다. 분산분석과 회귀 분석을 실시한 결과, 자신의 사회경제적 계층지위를 높게 인식하는 사람일수록, 상대적으로 많은 활동단체에 가입한 사람일수록, 그리고 이타적 목표를 지향하는 활동단체에 가입한 사람일수록 기부행위의 횟수가 증가하는 것으로 밝혀졌다. 이러한 경향은 개인의 인구학적 특성과 객관적 계층지표들을 통제한 이후에도 통계적으로 유의미하게 유지되는 것으로 확인되었다. 이 논문은 그 동안 개인이 지닌 특성과 동기의 차원에서만 논의되던 기부행위의 분석에서 설명변수의 영역을 사회적 맥락과 환경의 차원으로 확대하고, 그 인과구조를 실증적으로 파악하고자 시도하였다는데 의미를 부여할 수 있다. The main purpose of this paper is to examine the effects of the subjective class consciousness and social capital on donation behavior. Donation is a typical pro-social behavior and affected by the subjective perception of individual status of donor as much as that of objective socioeconomic one. It is assumed in this paper that the level of class status a person perceives is likely to influence the degree of participation in giving behavior. In addition, a concept of social network with its size and type is introduced as subordinate concept of social capital. The analysis is focused on the effects of these variables on donation behavior. Micro-data from Social Survey 2011 conducted by Statistics Korea is analyzed. ANOVA and regression analysis show that the level of individual perception on his or her socioeconomic status, the relative number of organizational membership and the degree of altruism that the participating organization pursue exert a significant effect on the frequency of donation. This relationship is found to be statistically significant, after controlling for the effects of individual demographic characteristics and objective indicators of socioeconomic status. This paper has a particular significance in that it tries to expand the extent of explanatory variables from individual feature and motivation to the social context and environment, and thus verify with empirical evidence its causal structure.

진자 구동 방식의 구형 이동 로봇 개발

김자영(Jayoung Kim),권혁조(Hyokjo Kwon),김대현(Daehyun Kim),최희병(Heebyoung Choi),이지홍(Jihong Lee) 대한전기학회 2009 정보 및 제어 심포지엄 논문집 Vol.2009 No.5

In this paper a pendulum-driven type spherical mobile robot is introduced. Many researchers have been studied about a spherical mobile robot. we developed a pendulum-driven type spherical mobile robot and analyzed mechanism of pendulum motion. Mechanism of pendulum motion applied to the robot. Consequently, we could verify the motion of the robot as motion of pendulum.

해적행위 대응 민간무장보안요원(PCASP)의 승선문제에 관한 국제법적 고찰

김자영 ( Jayoung Kim ) 안암법학회 2015 안암 법학 Vol.0 No.48

Once the exclusive domain of the world’s navies and coast guards, maritime security field now involves a complex web of private and public players. Somali piracy has been the key factor contributing to this development. By adapting their tactics and stretching their geographical reach, Somali pirates have demonstrated the limits of state security provision at sea, leaving the shipping industry and government regulators few alternatives but to adopt self-protective measures and accept the use of Privately Contracted Armed Security Personnels(hereinafter PCASP). PCASPs have grown to serve as protectors of roughly two-fives of the ships travelling in the High Risk Area exposed to Somali piracy, and appear to have reduced the success rate of pirate attacks. The immense reduction in piracy off the coast of Somalia indicates that PCASP are having a positive impact in eliminating the piracy problems and reducing the risks of transit in the area. In my opinion, their importance appears set to increase in the near future. The deployment of PCASP on board vessels, though gaining wider acceptability, is still being approached with great caution, largely due to the legal and regulatory complexities involved and outpacing regulation. Currently, the legal framework relating to use of Private Maritime Security Company(hereinafter PMSC) and PCASP on board protecting ships from Somali-based piracy is complex, sometimes ambiguous or inconsistent, and currently in a state of flux. Moreover, some incidentsand critics of PCASP raise the issue of jurisdiction, the applicable national laws in an encounter, the international guidance on the use of PCASP, etc. Therefore, there is a myriad of possibilities regarding legal problems, but they tend to be overlooked because of the unexpectedly high success rate of their protective activities against pirates. As it stands, there has been no valid endorsement for institutionalization by the International Maritime Organization and other major international organizations and no legally bing instruments agreed under international law. This article has set forth the legal issues, obligations, and the potential responsibilities relating to the deployment of PCASP on board ships to counter piracy. In particular, this article focuses on the legal issues including jurisdictional questions of the incident involving PCASP, legal issues relating innocent passage of PCASP aboard merchant vessel, restrictions governing use of force by PCASP in self-defense, and international responsibility of flag State involving the wrongful or indiscriminate use of force by PCASP.

스튜디오 뭄바이 주택에 나타난 지역적 재료와 빛의 공간적 특성

김자영 ( Kim¸ Jayoung Eunice ) 한국공간디자인학회 2020 한국공간디자인학회논문집 Vol.15 No.6

(Background and Purpose) Founded in 1995 by Bijoy Jain, Studio Mumbai has been attracting worldwide attention since 2006 after winning numerous international architectural awards in recognition of its originality and design approach. The purpose of this study is to investigate and analyze the residential project of Studio Mumbai completed between 2003 and 2011, to understand the use of local materials and the environmental characteristics of the site in order to derive what possibilities are presented when closely applied to the design process. (Method) Chapter 2 examines the background of Bijoy Jain's architectural philosophy and approach to design prior to case analysis. Based on this, Chapter 3 analyzes and summarizes the design diversity and characteristics of various residential projects from 2003 to 2011, and then selects four case projects to determine the choice and meaning of the materials used, the relationship with the site, and the space. The spatial effect were analyzed. In addition, the inflow and control method of light in each house and its effect on space was examined. By summarizing the findings, the effects and characteristics of local materials and light on the space in the residential architecture of Studio Mumbai were confirmed. (Results) Among the eight residential projects completed between 2003 and 2011, four case projects with the following common characteristics were selected for further analysis. First, it is located on an open site, and the layout of the house is a spatial arrangement that creates an inner garden. Third, the space was constructed using the following common materials, local wood, stone, and coloured cement. Finally, it created a unique indoor atmosphere by controlling the inflow of light. (Conclusions) It was evident that the general characteristics found through the analysis of the four case projects were the response to the site, natural site conservation was made by locating the house within the site and the use of local materials (wood, stone, water) throughout the house. By using local and natural materials, the newly constructed building was visually and physically connected with the site in close harmony, and beyond the dimension of physical relations, the psychological effects and connections are created by the space and the physical connection with the site. In addition, the 'regional' or 'traditional' architectural method that appears in the studio Mumbai's work process is thought to be a delicate and rational way to reinterpret the traditional locality in a modern way. These design characteristics of Bijoy Jain are now established as his representative gestures through repeated use but also his architectural philosophy and construction method in connection with design methods that take into account various characteristics of the region suggests a method that connects the past and present thus creating a sustainable society.

제2외국어로서 영어와 한국어 폐쇄음 산출과 인지 연구

김자영(Jayoung Kim),오미라(Mira Oh),임진아(Jin-Ah Lim) 서울대학교 언어교육원 2022 語學硏究 Vol.58 No.3

This study examines how L1 Korean learners of L2 English and L1 English learners of L2 Korean produce L2 stops in terms of voice onset time (VOT) and fundamental frequency (F0) and how they perceive L2 stops. The study also examines how the level of L2 proficiency functions as a critical factor in determining the L1-to-L2 influence. Two findings were derived from production experiments. First, the primary acoustic cues of L1 stops are negatively transferred to the production of L2 stops in L2 beginners. Second, advanced L2 learners acquire the primary cues of L2 stops. These results indicate that the acquisition of L2 stops is regulated by the different priority order of VOT and F0 between L1 and L2 stops and learners’ L2 proficiency. Furthermore, the results of production and perception experiments suggest that the perception of L2 stops precedes the production of L2 stops.

피드백 전계 효과를 이용한 Si-SiGe 근적외선 광 트랜지스터

김자영(Jayoung Kim),황진영(Jinyoung Hwang) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6

This study proposes a near-infrared (NIR) phototransistor utilizing a feedback field effect transistor (FBFET). The device features a pnpn structure comprising a p-type Si drain, n-type Si channel1, p-type SiGe channel2, and n-type Si source, and channel2 absorbs NIR light with a wavelength range of 1200 nm to 1700 nm. The light absorption in channel 2 generates an open circuit voltage, which leads to positive feedback and facilitates steep switching behavior. To further enhance the NIR absorption in channel2, the phototransistors are arranged in a 2-D array, forming a metasurface that concentrates NIR light in the SiGe absorption layer at resonance. In addition, the metasurface is designed to be polarization-sensitive by adopting the asymmetric geometry of the phototransistors that function as metaatoms. The proposed NIR phototransistor demonstrates a high on/off current ratio and low dark current.