Amphibious operations represent a pivotal military maneuver involving the transfer of landing forces via ships, boats, and aircraft from sea to land. The success of such operations can be the decisive factor in the outcome of a war. Nevertheless, planning an amphibious assault is an intricate and formidable task, demanding careful consideration of numerous variables. This complexity is particularly evident in the formulation of loading plans for troops and equipment onto naval vessels. Historical accounts underscore the profound repercussions of errors in planning and loading on the execution of these operations. In pursuit of efficient loading procedures characterized by precision and time-effectiveness, our study has delved into the realm of optimization modeling. Employing a mixed-integer mathematical programming approach, this optimization model offers a valuable tool to streamline and enhance the preparatory phase of amphibious operations.

PURPOSES : Asphalt pavements are damaged by various causes, such as cracks, potholes due to climate, and traffic environment. Asphalt aging has a significant effect on cracks, which may also form potholes. The purposes of this study are to estimate the change in asphalt binder and mixture performance and to correlate the physicochemical changes of the asphalt binder and mixture performance with aging. METHODS : The aging process of the asphalt was determined in the laboratory, based on the methods used in previous studies. In terms of consistency (stiffness), crack-resistance performance, moisture susceptibility, SK investigated the binder part, and Shoreki investigated the mixture part depending on the aging time. RESULTS : The consistency (stiffness) and brittleness of both the asphalt binder and mixture tended to increase with aging. In particular, the crack-resistance performance of the asphalt binder (G*sinδ, ductility, and ΔTc) and mixture (flexural fatigue test and Cantabro test) deteriorated because of asphalt aging. Furthermore, the aging mechanisms (oxidation and polymerization) were identified based on the chemical structure analysis. CONCLUSIONS : It is confirmed that the aging affected the chemical composition change and the physical properties of the asphalt. Asphalt pavements are significantly affected by the aging characteristics of the binder. It is concluded that the crack-resistance performance of the mixture decreases with aging due to these physical and chemical changes.

본 논문은 미국교정에 있어서 수용자인권의 신장과정과 제한적 조치의 내용 을 대표성있는 대법원판례를 중심으로 1960년대 이후부터 시대순으로 정리하고 그 사회적 배경을 기술한다. 또한 수용자소송과 관련된 수정헌법 조문을 기준으 로 각 권리영역에 속하는 소송결과를 나열함으로써 수용자의 권리가 신장되는 과정에서도 수용자권리보호와 시설의 안전과 질서유지 사이에 일정한 균형이 시도되고 있음을 보여준다. 끝으로, 미국과 우리나라에서 공통적으로 발견되는 정치사회적 분위기에 크게 영향을 받는 수용자인권정책이 그 한계를 벗어나 보 다 근본적인 접근이 필요함을 제시한다.

세간을 긴장시키는 흉악범죄와 호기심을 자극하는 신종사건의 발생, 이어 등장하는 언론매체의 ‘여론몰이’, 소위 전문인들의 무책임한 ‘범죄학 만들기’, 그리고 즉흥적인 ‘대책 짜깁기’ 등으로 이어지는 일련의 뿌리가 없는 범죄공학에는 철학적 사유나 예술적 가치가 개입될 여지가 존재하지 않는다. 또한 인간 모두가 체험하는 보편적인 삶의 형태 - 예컨대, 삶과 죽음, 자유와 속박 - 보다는 특수상황으로서 강제적 형별집행 - 예컨대, 구금, 징벌, 사형 - 이 중심이 되는 교정패러다임에서는 폐쇄성, 피동성, 안일성의 틀을 탈피하기 어렵다. 동시에 검증되지 않은 미시적 통계놀이가 학문적 중심으로 착각되고 시설내 사고방지가 효율적 관리의 목표가 되는 문화풍토에서는 형이상학적 사고놀이로 치부될 수 있는 소위 ‘철학적 범죄학’이나 ‘인문학적 교정학’은 영원한 노스텔지어적 이상향으로 남을 수밖에 없다. 따라서 기존 교정학의 전제와 실천적 규범이 더 이상 현실적으로 정당화되지 않는다는 비판을 통해 새로운 패러다임으로의 변증법적 논리형성과정을 거쳐야 한다. 구체적인 목표는 교정학의 비규범학화이며, 그 방법론으로 인문학적 접근이 제시될 수 있다. 인문학적 접근의 핵심적 내용은 철학적 사유, 영성적 추구, 예술적 가치의 지향을 통해 추론될 수 있을 것이다. 본질적인 인간의 생존과 삶의 향유 속에서 보편적이고 숙명적으로 체험하는 시간과 공간을 범죄학과 교정학의 출발점으로 삼아야 한다.

The purpose of this study was to look at the relationship between adult's sport-club participation and interpersonal relations disposition. There were two factors defining sport-club participation : the type of sports event and the degree of participation

In today's industrial society, one observes fierce competition aiming at profit generation among companies, and the utilization of complex machineries and cutting edge science and technology constitutes a constant threat to the life, body, and health of employees. In such a context, it is precisely the purpose of the Industrial Safety and Health Act that is in force to provide protection to the life and health of employees against hazardous and harmful environment and the role of enterprises becomes more and more important in the law. The Industrial Safety and Health Act places the responsibility for preventing industrial accidents on the shoulders of the business employer by providing safety and health information relating to current employees and creating an appropriate work environment. The employer must recognize the importance of prevention of industrial accident and must possess a business philosophy that places top priority on safety when it comes to company management. In light of such practical considerations, the present study approaches to find out the influence of safety and health management on business management from a statistical sample survey point of view. By doing this, the study hopes to show that a through safety management serves to protect the life and health of employees and raise profit for businesses. What is more, the study hopes to demonstrate that promoting a sound business culture can act as fertilizer that promotes the ushering in of a bright society.

  According to the statistic of industrial disaster in 2006 presented by the Ministry of Labor, there were 10,235 people with occupational diseases adding 2,740 more people (36.6%) compared to the previous year. Concerning the occupational diseases, 1,607

If you examine the Industrial Disaster Analysis Content that occurs every year in the small and medium enterprise, industrial disaster occurs because of manager's lack of safety and worker's unprepared safety education. Therefore effective safety education systems are needed to offer adequate knowledge and technology to the workers. On this research, to give an effective education way to decrease industrial disaster we administered to the workers who are in charge of 300 workplace in Incheon area to search actual condition of industrial disaster and to disclose a link between industrial disaster and industrial safety education. We put in effect on frequency study and examined x2 using SPSSWIN 10.0. On the research, the results shows that the industrial safety education and training are in effect regularly and the satisfaction are low. But the manager's satisfactions are high through safety education. So it shows that we need to find a way to put in effect safety education to satisfy the workers.

The purpose of this study was to examine the relationships among narcissism, self-esteem, and aggressiveness of the juvenile convicts incarcerated in a correctional institution. From the results of the study, we expected to obtain basic information and data needed in developing correctional educational programs to reduce their recidivism. The survey research was done on a population of 189 juvenile offenders incarcerated in a juvenile prison. The study utilized the t-test, correlation analysis and regression analysis as major statistical techniques. The study examined the following research questions: 1. What are the relationships among narcissism, self esteem, and aggressiveness of these juvenile convicts? 2. What are the impacts of narcissism and self esteem on their aggressiveness? According to the findings of correlation analysis, the juvenile convicts' narcissism was found to be significantly associated with their aggressiveness. The findings of regression analysis showed that such variables as the juvenile convicts' narcissism, self-esteem, and the relationships with their parents play a significant role in determining their aggressiveness. The study suggests that we should make more efforts in developing correctional educational program for juvenile convicts, so they can develop a healthy personality.

The structural and magnetic properties of nanostructued alloy powders were investigated. Commercial alloy powders (Hoeganaes Co., USA) with purities were used to fabricate the nanostructure Fe-Si alloy powders through a high-energy ball milling process. The alloy powders were fabricated at 400 rpm for 50 h, resulting in an average grain size of 16 nm. The nanostructured powder was characterized by fcc and hcp phases and exhibited a minimum coercivity of approximately 50 Oe

In this study, chemical solution mixing and hydrogen reduction method was used to fabricate nanostructured alloy powders. Fe-Co chloride mixture, FeCl and COCI with 99.9％ purity, were reduced in hydrogen atmosphere. Nanostructured Fe-Co alloy powders with a grain size of 50 nm were successfully fabricated. Magnetic properties of fabricated (x=0, 10, 30, 50, 70, 100) alloy powders with the same grain size were measured because size factor can affect magnetic properties. Coercivity of Fe-Co alloy powders were increased with increasing Co contents. Maximum value of coercivity in various Co contented Fe-Co alloy powders with similar grain size was 125 Oe at Fe. Saturation magnetization value at FeCo composition showed maximum value of 219 emu/g and saturation magnetization value decreased with increasing Co contents and minimum value of 155 emu/g was observed at Co.

The purpose of this study is the fabrication of nano-sized Fe-Co alloy powders with soft magnetic properties by the slurry mixing and hydrogen reduction (SMHR) process. 0 and powders with 99.9% purities were used for synthesizing nanostructured Fe-Co alloy powder. Nano-sized Fe-Co alloy powders were successfully fabricated using SMHR, which was performed at 50 for 1 h in H atmosphere. The fabricated Fe-Co alloy powders showed ' phase (ordered body centered cubic) with the average particle size of 45 nm. The SMHR powder exhibited low coercivity force of 32.5 Oe and saturation magnetization of 214 emu/g.