마찰에 의한 토크 꼬임 발생 기구의 이론적 고찰

임정호,간바트,허유,Lim, Jung Ho,T., Ganbat,Huh, You 한국섬유공학회 2014 한국섬유공학회지 Vol.51 No.5

This research comprises a theoretical investigation of the bundle twists created by the bundle thickness distribution while a bundle rotates by frictional force. The torque from the thickness differentials generates the twists of interest (i.e., the resulting rotation bundle differentials found in the friction area). Therefore, a theoretical model describing the dynamics of the twists per length was derived by applying continuous torque. The temporal bundle thickness is also considered. Using the model, the temporal profiles and spatial distributions of the torque twists are characterized. Under an arbitrarily chosen condition that allows simple interpretation of the torque twist characteristics, the governing equation system consisting of the model for the temporal distributions of the bundle radius on the friction drum surface and the model for the dynamic torque twists is solved, and the generation mechanisms of the torque twists are characterized. Results show that the torque twists propagate along the bundle axis in the form of a moving wave during the short time when the bundle first passes through the friction zone. After the bundle reaches a steady state, the torque twists increase very fast and then slow down as the bundle is moved by the take-up operation. Thus, the central area around the bundle axis becomes highly twisted by the superposition of the torque twists. This is because the input fleece fibers at the center accumulate for a longer distance than for the area near the bundle surface. However, at the exit of the friction area, the number of torque twists is almost zero because there is no accumulation distance for the torque twists to occur. This indicates that the torque twists are distributed with respect to the radial direction. This arc of torque-twist distribution can be described by a reciprocal relationship with respect to the radial position of the bundle cross-section.

연조 슬라이버의 선밀도 거동 해석. II. 연조비와 롤러 간격 효과

임정호,김종성,허유,Lim, Jung Ho,Kim, Jong S.,Huh, You 한국섬유공학회 2018 한국섬유공학회지 Vol.55 No.6

The behavioral characteristics of sliver linear density under roller drafting operation were investigated in this study. A theoretical model describing the dynamic behavior of the staples flowing in a single direction was applied. While the model parameters remained constant, the process parameters including draw ratio and roller distance were varied. Simulations of the dynamic behavior of the drawn sliver linear density showed that it was dependent on the process conditions, and the effects varied depending on the staple length distribution. For uniform length staples, the linear density of the drawn sliver showed periodic changes at a steady state when the drawing roller distance was long. For the short drawing zone, the drawn sliver exhibited a constant steady state linear density. Increasing the draw ratio caused the linear density to change periodically which resulted in an increase in the CV% of the drawn sliver linear density. For length distributed staples, the linear density was sensitive to the draw ratio. At a low draw ratio, for example, DR=4, the drawing zone length did not affect the sliver linear density, and a constant linear density was observed. However, at high draw ratios, for example, DR=12, the drawing zone length affected the linear density behavior of the drawn sliver, showing periodic changes in the steady state. Thus, high draw ratios and long drawing zones caused a drastic increase in the CV% of the quasi-steady state linear density. In general, the two passes of sliver in a drawing operation with low draw ratio resulted in improved properties, that is, a more even linear density of the drawn sliver than that obtained using single drawing pass with a high level draw ratio, which drastically increased the linear density.

마찰사 꼬임 구조의 이론적 해석

임정호,김종성,허유,Lim, Jung Ho,Kim, Jong Sung,Huh, You 한국섬유공학회 2016 한국섬유공학회지 Vol.53 No.4

During friction yarn formation, fiber fleece is fed continuously into the gap between two surfaces moving at different speeds to build a bundle. This bundle is then pulled out of the gap and taken up onto a bobbin. During this process, the bundle obtains twists that are generated in two forms-one by fiber arrangement and the other by torque. Twists are generated in two zones, which are the friction zone and the take-up zone. Therefore, the total twists can be obtained by adding all twists occurring in the two zones. The presented research reports the structural characteristics of the friction yarn based on theoretical twist models. The yarn structure represented by the arrangement of the constituent fibers is analyzed by simulation of the theoretical models. Results show that the fiber arrangement twists are directionally opposite to the torque twists in the friction zone; for example, fiber arrangement twists are S-twists and torque twists are Z-twists. In the take-up zone, the twist generation occurs in the Z-direction. Thus, the total twist per length of the friction-spun yarn is uniformly distributed along the bundle radius. More specifically, the resultant overall twist is zero, theoretically.

제트 환기 시스템 도입에 의한 플랜트 기자재 용접장의 환경 개선 효과 분석

임정호,이태구,문승재,이재헌,Lim, Jung-Ho,Lee, Tae-Gu,Moon, Seung-Jae,Lee, Jae-Heon 한국플랜트학회 2008 플랜트 저널 Vol.4 No.2

In this inquiry, I would suggest jet ventilation system for effective elimination of welding flaw at machinery material welding shop on plant and evaluate the airstream on inner space and property of welding flaw's density through the examination. We can know outer atmosphere inflows at the speed of about 0.05m/s from western entrance in case of stopping the jet ventilation system, but airstream is accumulated on entire space. At height of worker's breathing surface(Ground Level = 1.5 m, below of GL) and welding work center, density of welding flaw on upper part(GL = 12m) is appeared 4 times higher than outer atmosphere at surplus range besides nearby of western entrance. At operation of jet ventilation system, since the smooth air current transfer at inner space and exhaust effect the wind speed is maintained at 0.932 m/s at the point of height of worker's breathing surface on inner space and it's concluded about the working conditions have been better than before operation of jet ventilation system because of that results show that inner space density of welding flaw at height of worker's breathing surface is 40.5%, and in the work shop, it is 20.3% at upper part.

연조 슬라이버의 선밀도 거동 해석. I. 스테이플 길이 분포와 슬라이버 점도 효과

임정호,김종성,허유,Lim, Jung Ho,Kim, Jong S.,Huh, You 한국섬유공학회 2017 한국섬유공학회지 Vol.54 No.5

This study deals with the thickness irregularity of the sliver delivered from a drawing process based on a theoretical model. The thickness variation was expressed as CV(%) of the linear density of the drawn sliver in a steady state. Under the given simulation conditions the simulation results illustrate that the sliver linear density shows two types of behavior: a constant linear density and a periodically changing linear density with traveling peaks. For uniform staple-length slivers the linear density has multi-modal fluctuations, whereas the slivers with a distributed staple length show no fluctuation in the linear density at low sliver viscosity. The irregularity of uniform staple-length slivers is higher than that of the staple length distributed one. As the sliver viscosity increases, the irregularity of the drawn slivers increases.

배임죄의 본질에 관한 연구 -배임죄의 성립범위와의 관련성을 중심으로-

임정호 ( Jung Ho Lim ) 연세대학교 법학연구원 2008 法學硏究 Vol.18 No.2

형법상 재산 개념에 관한 연구

임정호(Lim Jung-Ho) 한국형사법무정책연구원 2009 형사정책연구 Vol.77 No.-

항공보안법상 벌칙규정의 제문제 -규정양식에 있어서의 통일성과 적정성 원칙의 문제점을 중심으로-

임정호 ( Jung Ho Lim ) 연세대학교 법학연구원 2015 法學硏究 Vol.25 No.1

The purpose of ‘Korean Aviation Safety and Security Act’ is to prescribe standards, procedures and obligations to prevent any unlawful act in airport facilities, air navigation safety facilities and aircraft and to ensure the safety and security of civil aviation, in accordance with international conventions, such as the Convention on International Civil Aviation. The are various penal provisions such as ‘Crime of Causing Damage to Aircraft’, ‘Crime of Hijacking Aircraft’, ‘Crime of Altering Course of Airplane’, ‘Crime of Interference in Airport Operation’, etc. Even though there have been several times of amendments and revisions of the Act, the penal provisions of the Act still lack of unity and proportionality. The provisions themselves seem to be clear (For example, the term “in flight(Article 2 of the Act)” means from the time all the doors of an airplane close after passengers board the airplane to the time all the doors of the airplane open for passengers to disembark.), however, the clearness of terms of the Act is not enough for the provisions to be applied to cases due to its lack of unity and proportionality. In order to ensure the safety and security of civil aviation, the penal provisions of the Act should be revised.

아동ㆍ청소년의 성보호에 관한 법률상 아동음란물 정의규정에 대한 미국법과의 비교 연구

임정호(Lim, Jung Ho) 국민대학교 법학연구소 2013 법학논총 Vol.25 No.3

사회적 가치가 전무한 아동음란물은 절대적으로 금지되어야 할 대상이다. 우리나라는 아동음란물에 관한 규제를 아동ㆍ청소년의 성보호에 관한 법률이 담당하고 있다. 동법은 아동음란물의 정의는 물론 관련 행위자들에 대한 강력한 처벌규정들을 두고 있다. 아동음란물에 대한 선도적이고 강력한 처벌을 시행하고 있는 미국의 경우 이에 대해 어떠한 표현의 자유도 인정하지 않고 절대적으로 금지하고 있다. 미국에서는 아동음란물의 제작, 유통, 그리고 소지행위에 대한 강력한 처벌을 아동의 성 착취 방지라는 입법목적을 위한 것으로 해석한다. 다만 아동연상음란물의 경우 비록 경우에 따라 아동대상 성범죄의 촉매제가 될 수도 있지만, 아동음란물로 규정해서는 안 된다는 것이 미국 연방대법원의 입장이다. 우리나라의 경우 아동음란물을 규제하는 아동ㆍ청소년의 성보호에 관한 법률이 아동의 성 보호와 건강한 양육은 물론이고 아동대상 성범죄의 방지를 그 주요 보호법익으로 규정하고 있다. 또한 현실적으로 우리나라에서 아동음란물과 아동대상 성범죄간 연관성을 부정할 수 없다는 점을 고려해야 한다. 따라서 실제 아동이 등장하지 아니하는 영상물 역시 아동음란물로 보아 동법에 의하여 처벌할 필요성도 존재한다. 다만 아동음란물의 범위를 지나치게 넓게 해석하여 사회적으로 불필요한 논란을 야기할 필요는 없다. 현재로서는 동법상 아동연상음란물의 규제를 위하여 별도의 경한 법정형을 두는 것이 가장 적절한 개선방안이다. Protecting children from the abuse of sexual predators is of utmost national importance. Traditional child pornography, which includes actual children in its production, necessarily involves the sexual abuse or exploitation of children. Clearly, advances in technology have made that task harder because current law made no distinction between materials depicting images of real children engaged in sexually explicit conduct from those depicting “virtual” children. In responding to these changes in technology, however, Congress have tried to revise the current law, ‘The Act on the Protection of Children and Juveniles from Sexual Abuse’ in order to alleviate anxiety of society. This Note will begin in Part I by providing an issue. Part Ⅱ will describe and explain the definition of child pornography with the traditional concerns associated with child pornography, its dangers, and the rationale behind its proscription. It will then briefly outline ‘the Act on the Protection of Children and Juveniles from Sexual Abuse’, the statute at issue in child pornography. Part III will examine several U.S. Supreme Court"s decision in the issue of child pornography in order to find implication to the Korean law. Part IV will analyze the public interest of ‘the Act on the Protection of Children and Juveniles from Sexual Abuse’ and conclude that the revised statutory definition of child pornography shall be again reviewed in support of research about the link between sexual abuse and child pornography.

미국 연방대법원 판례상 영장없는 압수 · 수색제도

임정호(Lim, Jung Ho) 강원대학교 비교법학연구소 2016 江原法學 Vol.47 No.-

미국에서는 수정헌법 제4조에 따라 압수와 수색에 있어서 영장주의 원칙이 지켜지고 있다. 그러나 이러한 영장주의 원칙에 대하여는 적지 않은 예외가 인정되고 있다. 이러한 예외를 일반화하기는 대단히 곤란하지만, 수사 내지는 법집행의 효율성을 제고하기 위하거나 혹은 미국 특유의 총기소지에 대한 자유권을 보장하면서 불거진 문제점을 규율하기 위한 차원에서 영장주의 원칙에 대한 예외의 폭이 점차 넓어지고 있는 것이라는 평가도 가능하다. 한편 미국의 영장주의 원칙의 예외와 효과면에서 동일한 것으로 ‘수색’ 개념의 조정에 있어서의 유연성 강조 역시 간과될 수 없다고 본다. 미국에서는 연방대법원의 판례법에 의하여 ‘수색’ 개념의 예외가 인정되곤 한다. 이에 본 연구에서는 그 대표적인 예로 상공에서의 공중 관찰을 검토하였다. 반면 이와 달리 ‘수색’ 개념에의 포섭을 긍정하여 개인의 프라이버시권 보호를 수사 내지는 법집행의 효율성 확보 보다 중시하는 경우 역시 찾아볼 수 있다. 대표적 예로 열영상기의 스캔 기능활용의 경우가 이에 해당할 것이다. 미연방대법원은 이와 같이 개인의 프라이버시권을 축으로 하여 ‘수색’ 개념의 인정 범위를 조정하고 있는 것으로 판단된다. 우리나라 역시 점차 다양화되는 범죄를 규율하기 위하여 전에 없던 수사기법을 향후 채택할 것으로 예상되므로 개인의 프라이버시권의 보호를 기본으로 하면서 합법성 여부를 개별적으로 판단해야할 것으로 본다. In the United States, warrantless seizures and searches are restricted under the Fourth Amendment to the United States Constitution. “The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.” There are, however, six types of warrantless seizures and searches even with the restriction under the Fourth Amendment. Search Incident to Lawful Arrest is generally permitted. Automobile Exception is very broad exception with probable cause under the Fourth Amendment. Plain View Exception does not require ‘Inadvertence Test’. Moreover, there is no doubt that Consent, Stop and Frisk and Hot Pursuit require not probable cause but contemporaneousness. Moreover, there is also another type of exception to the Fourth Amendment. The United States Supreme Court narrows the definition of Search under the Fourth Amendment. Hence, there are several techniques for law enforcement permitted even without warrant. It is also required to find appropriate implications because of new techniques for investigation even though the Korean Criminal Procedure does not square with the United States Supreme Court case laws. However, it is necessary to be more concerned with the Right to Privacy rather than the effectiveness of law enforcement when the Korean Criminal Procedure is required to adopt the implications.