지반 보강과 배수를 위한 이중기능 록볼트 성능 검증에 관한 연구

정영훈,김두래,김경철,신종호,Jung, Young-Hoon,Kim, Doo-Rae,Kim, Kyeong-Cheol,Shin, Jong-Ho 한국터널지하공간학회 2018 한국터널지하공간학회논문집 Vol.20 No.5

록볼트는 지하굴착 중 불연속 암반을 보강하기 위하여 흔히 사용하는 대표적인 지보재 중의 하나이다. 용수가 많은 현장에서는 굴착 시공성을 개선하고 록볼트의 정착효과를 증진하기 위하여 별도의 Drain pipe 설치하게 된다. Drain pipe는 배수경로를 제공하여 작업성 개선에 효과적이지만 지반보강효과를 기대하기 어렵고, 다수 설치 시 불연속 암반의 교란을 증가시키며, 공사비 증가 요인이 된다. 이러한 문제를 개선하기 위하여 암반의 보강과 배수를 겸한 Dual purpose rockbolt (DPR)를 개발하였다. DPR은 신속하고, 경제적으로 암반의 역학적 수리적 안정성을 개선할 수 있었다. FRP (유리섬유 보강 플라스틱)와 steel을 이용한 2가지 DPR을 개발하여 역학적 수리적 성능을 검토하였고, 시공성과 안정성을 분석하였다. Rockbolt is one of the most common supports used to reinforce discontinuous rock during underground excavation. Extra drain pipes are installed to improve excavation workability and the anchorage of rockbolts in water bearing ground. The drain pipe is effective in improving the workability by providing drainage path, but it is difficult to expect the reinforcement effect, increasing disturbance of the discontinuous rock mass and the construction cost. To solve this problem, dual purpose rockbolt (DPR) has been developed for the reinforcement of rock and the drainage of ground water. DPR was able to improve the mechanical and hydraulic stability of the rocks quickly and economically. Two kinds of DPRs using FRP (Fiber Reinforced Plastic) and steel were investigated for the mechanical and hydraulic performance. Also, the workability and stability of DPR were analyzed.

CEL 기법을 활용한 사질토 지반의 콘관입시험 유한요소해석

정영훈(Jung, Young-Hoon),우상인(Woo, Sang-Inn),김성민(Kim, Seongmin) 한국지반신소재학회 2019 한국토목섬유학회 학술발표회 Vol.2019 No.3

취업규칙의 불이익변경에 관한 일고찰

정영훈(Jung young hoon) 한국노동법학회 2009 노동법학 Vol.0 No.31

The proviso of Paragraph 1 of Article 94 the Labor Standards Act in effect provides that modification the Rules of Employment unfavorably shall require the consent of a majority of the union members if the place of business has a trade union consisting of a majority of its workers, and the consent of a majority of its workers if the place of business does not have a trade union consisting of a majority of its workers, and that unfavorable modifications made to the Rules of Employment in violation of such provision shall be null and void and shall not be binding on the workers. Even though such methods for modifying the Rules of Employment unfavorably may represent an improvement, if looked at from the perspective of the principle of even decision on the working conditions, such methods harbor a controversial point wherein the interests of the minority of the workers opposed to such modification are not taken into consideration by ascribing the validity of the unfavorable modification to the rule of the consent of the majority. The purpose of this study is to argue that it is essential to supplement the procedural requirements under the provision of Article 94 of the Labor Standards Act with an examination of the procedures and contents with the foregoing controversial point in mind. Above all, with respect to the examination of the procedures, I, at the suggestion of the relevant arguments in Japan, have indicated that the labor union consisting of a majority of the workers shall have the duty of fair representation and the duty of integration of opinions, and the employer shall have the duty to listen to the opinions and the duty to integrate the opinions. Next, with respect to the examination of the contents, I, at the suggestion of the relevant arguments in Germany, have presented the justification and feasibility of the examination of the contents, observing that disadvantageous amendment to the Rules of employment under the Labor Standards Act in effect is dependent on the decision of others. This study is of the trial theory nature arguing that the conflicts of interest between the majority and minority of the workers involved in unfavorable modification to the rules of employment shall be solved by supplementing it with the examination of the procedures and contents other than by meeting the requirements under the proviso of Article 94 of the Labor Standards Act in effect, and is limited in that it has failed to deal with specifically how the procedures and contents shall be examined. However, given that the rules of employment under the Labor Standards Act stipulate almost all of the working conditions of the workers, is approved by the majority of the workers and thus can hardly secure the propriety of the procedures and contents, the issues presented in this study may be worthy of serious review until the time when the legislative perfection of the legislative system of the rules of employment is attained.

입상체와 상호작용하는 지반 구조물의 DEM-FEM 연계 해석

정영훈(Jung, Young-Hoon),김성민(Kim, Seongmin),김성렬(Kim, Sung-Ryul) 대한토목학회 2018 대한토목학회 학술대회 Vol.2018 No.10

직접고용원칙의 헌법적 근거에 관한 고찰

정영훈(Jung, Young-hoon) 인하대학교 법학연구소 2017 法學硏究 Vol.20 No.1

직접고용의 회피와 간접고용의 확산에 따라서 근로자들의 근로조건이 열악해짐에 따라서 고용관계의 형성을 지배하는 법적 원칙으로서 이른바 “직접고용의 원칙”이 주목되고 있다. 이 원칙을 주장하는 사람들은 고용과 사용이 분리되어 있는 근로자파견 그 자체를 강력하게 억제하고 근로계약상의 당사자가 아닌 사용사업주에 대해서 일정한 경우에는 근로계약상의 사용자와 동일한 책임을 부담하도록 하여야 한다고 한다. 이러한 주장이 노동정책적인 관점에서 볼 때에는 매우 타당한 것이라고 할지라도 입법적으로 관철되기 위해서는 직접고용의 원칙이 과연 어떠한 법규범적 근거와 위상을 가지고 있는지가 명확히 해명될 필요가 있다. 직접고용의 원칙이 단지 노동정책적 관점에서 선택가능한 정책 수단에 지나지 않을 경우에 이 원칙은 규범적 지위는 매우 약할 것이다. 따라서 본 연구에서는 직접고용원칙이 헌법에서 보장하는 근로의 권리로부터 도출되는 것이라는 점을 증명함으로써 고용과 사용이 분리되는 근로관계인 파견근로관계를 법적으로 규율할 때 직접고용원칙이 반드시 준수되어야 한다는 점을 논증하려고 한다. 직접고용의 원칙이 근로의 권리에서 도출되는 것인 이상 국가는 고용과 사용이 분리되는 근로관계를 입법으로 규율할 때 항상 직접고용원칙에 따라야 할 것이다. 본 연구에서는 헌법 제32조에서 보장하고 있는 근로의 권리의 내용을 고용의 기회에 관한 권리, 근로관계의 유지·존속에 관한 권리, 근로조건에 관한 권리로 나누고, 각각의 내용을 확정한 다음, 이들 각 내용에서 직접고용원칙이 도출될 수 있는지를 검토하였다. 결론적으로는 고용과 사용이 분리되어 있는 근로관계에 있어서 이들 각각의 권리가 효과적이고 충분히 보장·실현되기 위해서는 직접고용의 원칙이 반드시 준수되어야 한다는 점을 논증하였다. As working conditions of employee get worse due to avoidance of direct employment and spread of indirect employment, “principle of the direct employment” has been drawing attentions as a legal principle governing an establishment of employment relationship. Those who advocate this principle argue that worker dispatching itself separated between hiring and using shall be strongly restrained and a user company shall be held responsible as same as a user on employment contract is in certain cases. For this argument to be translated into legislation, what legal normative basis and status the principle of the direct employment has should be clarified. This study aims to demonstrate that the principle of the direct employment shall be observed in legally regulating dispatch work relationship separated between hiring and using. That is because, as long as the principle of the direct employment is derived from the right to work, a state is always required to observe the principle of the direct employment in legally regulating a work relationship whose hiring and using are separated. This study divides the contents of right to work guaranteed in the Article 32 of Constitution into the right regarding opportunity of employment, the right regarding maintaining and continuing employment relationship, and the right regarding working conditions and defines the contents of each right. Based on the defined contents, it reviews whether the principle of the direct employment may be derived from the each content. In conclusion, it demonstrates that the principle of the direct employment shall be observed in order for each right to be effectively and sufficiently guaranteed and realized in a work relationship whose hiring and using are separated.

일본의 근로자의 영업비밀 유지의무에 관한 고찰과 그 시사점

정영훈(Young-Hoon Jung) 세창출판사 2008 창작과 권리 Vol.- No.53

Restricting the use of trade secrets that Employees have legitimately acquired during their work in the post-employment context can unfairly limit the Employees' freedom of choosing occupation. When such restrictions are established in Unfair Competition Prevention and Trade Secret Protection Act and work contracts, the restrictions should be carefully designed to prevent unjustifiable restriction of Employees' freedom in selecting occupation. From such perspective, this paper analyzes Unfair Competition Prevention and Trade Secret Act of Japan, where legal system is similar, in the areas of trade secret protection measures and the responsibility for protection of secret in Employment contracts to find legal implications for Korea. The analysis of the Japanese act on the protection of trade secret shows that the Japanese articles of the act include careful and detailed measures to protect Employees' freedom of occupation in the postemployment context. However, the act is problematic as it is based on the responsibility for protection of trade secret in accordance with the principle of good faith. To a certain extent, the Japanese precedents provide criteria of judgment for evaluating the effectiveness for the trade secret articles in contracts. However, the act does not sufficiently support workers' freedom of occupation. The review and analysis reveal that measures for protection of trade secret in Korea's Unfair Competition Prevention and Trade Secret Protection Act is likely to harm Employees' freedom of choosing occupation. Furthermore, lessons from discussions on the responsibility for protection of trade secret in Japanese employment contracts should be applied to the Korean case so that legal interpretations are made cautiously and Employees' freedom of choosing occupation is not illegitimately restricted.

근대 한국에서의 ‘단군민족주의’

정영훈 ( Jung Young-hoon ) 한국민족운동사학회 2001 한국민족운동사연구 Vol.29 No.-

This article discusses the the problems related to the 'Dangun nationalism’ which has played a significant role in the Korean people's development as a nation as well as Korea’s modernization process and its pursuit of unification. ‘Dangun nationalism’ refers to a strong national consciousness, as well as ideological, political and cultural movements that have promoted unity and development based on a national identity which regards Korean people as 'descendants of Dangun’. ‘Dangun nationalism’ has a history much older than Samgukyusa(三國遺事) and Jewangungi(帝王韻紀) both of which provide early written accounts on the nation's foundation. Dangun Nationalism was somewhat subdued by the flunkeyism that characterized Korean relations toward China during the medieval age, but it was popularly restored in the 19th century and stimulate the Korean people’s patriotism and national consciousness. During the period of Japanese colonial rule, it played a central role in arousing public sentiments to resist foreign encroachment and attain independence. In the closing years of the Joseon dynasty, the populace began to embrace a growing consciousness that they were descendants of Dangun, which led to various developments, including the establishment of social organizations, related lo public awareness efforts and academic studies on ‘Dangun nationalism’. Notable among these campaigns were a religious movement spearheaded by Daejonggyo(大倧敎) and a nationalist academic movement led by Sin Chae-ho(申采浩). In Korea’s modem history, nationalism and modernization owe much to 'Dangun nationalism’ for their growth and acceptance. First, in the development process of the Korean people from a pre-modem nation lacking in national consciousness to a modem nation armed with a dynamic national consciousness, 'Dangun nationalism' were significant influences. Second, Dangun nationalism’ significantly contributed to bolstering Korea's capability to wage its struggle for national independence. Third, 'Dangun nationalism’ contributed to changing Korea's medieval and feudal structure to a modem democratic system Fourth, ‘Dangun nationalism' rendered both emotional and theoretical support to the movements for Korean national solidarity and independence following the Samil Independence Movement. Following the establishment of the Republic of Korea in 1948, ‘Dangun nationalism1 served as an institutionalized mechanism for national integration with the adoption of Gaecheonjeol(開天節) as one of the country's four major national holidays, hongikingan(弘益人間) as a guiding principle for education, and the Dangun era(檀紀) for official use. While ‘Dangun nationalism’ has since shown signs of decline in South Korea amid rapid Westernization and the prevalence of individualism and globalism, North Korea seems to continue to give it weight as a regime ideology. For the impending tasks of realizing the unification of North and South Korea, forming a commonwealth for the Korean race, establishing a refined Korean national identity, and renewing the moral integrity of the nation, the ‘Dangun nationalism’ still promises to play an essential role. As a valued resource of the nation, the Dangun nationalism’ will live on as long as the Korean people exist.

화주기업과 물류기업간 물류역량 중요도 인식 비교 연구 -전자 제조기업 국제 항공화물을 중심으로-

정영훈 ( Young Hoon Jung ),박민영 ( Min Young Park ) 한국로지스틱스학회 2015 로지스틱스연구 Vol.23 No.1

최근 국내 물류 업계에서는 대기업 모회사들의 물류 자회사에 대한 일감 몰아주기 현상이 하나의 큰 이슈가되고 있으며, 3자물류 기업과 대기업 2자물류 기업간 경쟁구도가 형성되어 있는 것으로 보인다. 이러한 상황에서 각각의 물류기업들이 어떤 측면에 중요 역량을 두고 업무 진행을 하는지 확인해볼 필요가 있으며, 화주기업 입장에서 물류자회사와 전문 물류기업들의 중요 업무역량을 분석하고, 또한 물류기업 입장의 중요 업무역량은 무엇인지를 조사하여, 기업형태별 상호 비교 분석을 통한 현재 위치와 앞으로의 발전전략을 수립하고자 하였다. 본 논문에서는 2자물류 기업과 3자물류 기업을 동시에 이용하는 화주기업을 대상으로 설문조사를 실시하여 물류 업무에서의 중요역량을 파악해보고, 이 요소들이 물류기업을 선택하는 대안 요소에 어떤 영향을 미치는지 살펴보았다. 연구대상 업체는 항공 국제물류서비스 제공자의 일반 형태인 포워더(로컬 기반, 외국계), 글로벌 특송사, 2자물류 포워더를 모두 활용하고 있는 전자제조기업을 대상으로 연구조사를 진행 하였고, 분석 방법론은 AHP(Analytic Hierarchy Process)방법을 활용하였다. 본 연구 결과를 바탕으로 우리나라 화주기업 및 물류업체, 포워더등에게 화주기업 및 물류기업의 중요 역량에 부합되는 맞춤형 물류 전략을 수립하는데 참고가 되고자 한다. Recently, in the Korean domestic industry, the fact that giant conglomerates are giving majority of works to their subsidiaries has been taken as a big issue for the mass media. Especially, issues arising from logistics for the same are gradually getting bigger day by day. Especially, in this particular study, it compared giant conglomerates’ logistics subsidiaries with companies specialized in logistics in terms of the quality of service, and the importance from the point of view of shippers. By doing so, this study tries to establish the current status of each logistics company, with a view to setting future strategic plan for further development in the industry. First study is forecasting on domestic logistics environment change on the side of shipper and logistics service provider and second study carried out a survey to shippers on the importance in choosing a particular company, and the actual service quality to figure what effects a forementioned has in the satisfaction and will to procure it again. On the contrary, carring out a survey to logistics service provider(such as third party logistics company(based on local company & based on foreign company) and second party logistics forwarder company, global express company) on the importance in delivering and handling with shipper``s item. All survey and study is carried out focusing on semiconductor item division of first class electronics company because of contracting and using all kind of logistics service provider such as 3PL, subsidiary logistics company, express delivery company and method of analysis is AHP(Analytic Hierarchy Process). By doing so, this study tries to find alternatives that can bring about improvements in both domestic and international logistics market including shipper & logistics service provider.

캡슐형 자동 화물 운송시스템 파이로트 개발

정영훈(Young-Hoon Jung),서상호(Sang-Ho Suh),김인복(In-Bok Kim) 한국유체기계학회 2018 한국유체기계학회 학술대회 논문집 Vol.2018 No.7

파라메트릭 디자인을 이용한 듀얼 클러치 변속기용 자속집중형 동기 전동기 설계

정영훈(Young-Hoon Jung),박권일(Kwon-Il Park),임명섭(Myung-Seop Lim),홍정표(Jung-Pyo Hong) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11

This paper proposes a design process of the Concentrated Flux type Synchronous Motor (CFSM) satisfying the same performance of the conventional Surface-mounted Permanent Magnet Synchronous Motor (SPMSM). The rotor shape producing the maximum air-gap flux is determined under the same volume condition and the radius of rotor is increased to satisfy the same air-gap flux of the conventional motor. The radius of rotor is determined by parametric design. The width of teeth and yoke is recalculated considering saturation of the stator after the rotor is designed. The joint of the rotor that is composed of the magnetic core and non-magnetic part is designed by parametric design. Finally, the characteristics of the designed CFSM is compared with those of the SPMSM.