• International Journal of Precision Engineering and Manufacturing
• /
• v.7 no.1
• /
• pp.13-17
• /
• 2006

Self-Assembled Monolayers (SAMs) formed by alkanethiol adsorption to thin metal film are widely being investigated for applications as coating layer for anti-stiction or friction reduction and in fabrication of micro structure of molecules and bio molecules. Recently, there have been many researches on micro patterning using the advantages of very thin thickness and etching resistance of Self-Assembled Monolayers in selective etching of thin metal film. In this report, we present the several machining method to form the nanoscale structure by Mask-Less laser patterning using alknanethiolate Self-Assembled Monolayers such as thin metal film etching and heterogeneous SAM structure formation.

• Journal of the Korean Institute of Navigation
• /
• v.17 no.4
• /
• pp.53-71
• /
• 1993

The amount and quantity of sea casualities are increased by both an increasing sea-borne cargoes and heavy sea traffic. This paper analyzed the situation of Korean salvage company in order to activate on civilbasis, compared with the nature of common enterprises, and reported the object, the necessity, and the cha-racter of salvage company. For the purpose of this study, three parts are considered in order to analyze the environment of salvage company(the trend of sea casualties, sea-borne cargoes-passengers, ship tonnage/age) the effective planning to activate Korean salvage company are abstracted as follows : 1.the political assistance of concerned government authority. 2.the cooperation system of concerned business field. 3.the self-developing management of salvage company.

• Journal of the Korean Institute of Navigation
• /
• v.21 no.1
• /
• pp.57-73
• /
• 1997

This paper deals with internal and outernal factors of Maritime High School in Korea, and suggests the followings. The fist, superintendent authority of schools should be transferred to ministry of education from ministry of marine. The second, education system should be upgraded to junior college or 5 years education course. The third, the door of maritime university permission should be opened for maritime high school graduates. The fourth, training ship should be built for effective training course required form STCW 95. The fifth, if the graduates form maritime high school engage board, all of them should be exempted from military service responsibility. The sixth, the on board-training system for teachers and instructors should be programmed in order to help them keep and utilize the on board experience in actural education situation. The seventh, the school location should be placed in order to increase the efficiency of the education.

• Structural Engineering and Mechanics
• /
• v.18 no.5
• /
• pp.609-626
• /
• 2004

The Land Transport Authority of Singapore has a continuing program of highway bridge upgrading, to refurbish and strengthen bridges to allow for increasing vehicle traffic and increasing axle loads. One subject of this program has been a short span bridge taking a busy highway across a coastal inlet near a major port facility. Experiment-based structural assessments of the bridge were conducted before and after upgrading works including strengthening. Each assessment exercise comprised two separate components; a strain and acceleration monitoring exercise lasting approximately one month, and a full-scale dynamic test carried out in a single day. This paper reports the application of extreme value statistics to estimate bridge live loads using strain measurements.

• Journal of the Korean Institute of Navigation
• /
• v.20 no.3
• /
• pp.137-162
• /
• 1996

Today diving activity and technology are indispensable for underwater technology and offshore engineering. And then diving business is still more important to business of subsea. This study surveyed the issue of diving activity in Korea as for compared foreign diving activity. This paper analyzed the status of diving business that include commercial and sport-leisure diving business and development of commercial divers in Korea. This paper reputed the object, the necessity and the character of commercial divers. For the purpose of this study is considered in order to analyze the environment of commercial divers and propose the planning for industrial diving business. Under the present circumstance in Korea this development planning study may be restricted. but the effective planning to activate Korean commercial diving business is abstracted as follows; First, establishment of new course, grade, certificate and licence test for diver is a pre-requisite factor for the successful enactment. Second, the political assistance of concerned government authority is needed. Third, establishment of Korean diving school and medical center for divers are strongly required. Forth, setting up the department of diving activity in university.

• Journal of the Korean Institute of Navigation
• /
• v.19 no.4
• /
• pp.63-82
• /
• 1995

This paper is a study on standard testing method for type approval of DSC which is the main structure of the terrestrial communication. As authority inspecting offices and producers have no experience for type approval of relative equipments as adapting GMDSS. In this paper, it is to be improved the understanding for type approval ; a system, standard of technic and testing methods, etc and make better quality of relative equipments. Additionally it could help quality and quantity improvement in all radiocommunication parts. Of course, the regulation for type approval had made but most makers didn't know it correctly, so the method of solution have been studied. By result of this study, with comparision and analysis of structure and a condition of efficiency with adapting GMDSS is could help some problems slove in the field and gave testing method of machinery and tools, electrical conditions, came out measurement and did ways standard efficiency.

• Journal of the Korean Institute of Navigation
• /
• v.10 no.2
• /
• pp.57-81
• /
• 1986

The conventional school affairs management, with an example of Korea Martitime University (KMU), is studied through the university codes and its internal regulations and the inevitable problems of the conventional school affairs are analyzed. From the view points of complexity of the educational structure and increase in educational population, the computerized school affairs management is increasingly requested. Therefore, in order to design and implement a computerized school affairs management system, a code-system suitable for the KMU is, first of all, constructed and then a data base which copes with various reforms or changes is developed by using the code system and the IMAGE/DMBS of a HP-9040AM computer. A FORTRAN example program shows that the designed data base can be easily transformed into on-line system and made good use of managing school affairs. Furthermore, it is recommended that the university authority organize a research team for designing the total system in future university administration and solving difficult problems occurring through the computerization.

• Journal of the Korean Institute of Navigation
• /
• v.12 no.3
• /
• pp.55-74
• /
• 1988

The increase in seaborne cargoes has made our coastal traffic congested, and future coastal traffic is also expected to increase considerably as result of our economic development and high dependence on foreign trade. This increased traffic may be a cause of serious sea pollution as well as greater number of sea accidents. In view of this problem the introduction of VTMS along on our coast is required, following careful study of a large number of foreign systems. This paper analyzes the actual condition of 132 VTMSs in the world from the view point of management method authority of VTMS, coverage and characteristics of system. And this results provide helpful information for the development of VTMS in the future and for the implementation of VTMS in our coastal waterway.

• Journal of the Korean Institute of Navigation
• /
• v.7 no.2
• /
• pp.115-128
• /
• 1983

Ship technology has advanced in many diverse directions in recent years, a trend that can be expected to continue. The effect of this both on the physical equipment now being usedand under construction and on the attitude of mind of many of those responsible for its operation is profound. The technological changes in shipping have brought about an increasing trend towrard more delegation of authority from shoreside to ship management. With increased shipboard responsibility the shipping industry would benefit from seeming that more of the management subjects were learned by nautical students. It is clear advantage that companies should draw into their general management structure men with seafaring experience. At the same time the the boards of shipping companies should include more men with high technological qualificatiions and experience.

• Journal of Navigation and Port Research
• /
• v.42 no.6
• /
• pp.507-517
• /
• 2018

The probability of T/S cargo volume to decrease is the most notable problem associated with inappropriate mix of terminal operators in Busan port. Other problems include, the deterioration of the national carriers' competitiveness from non-operation of own terminal, excessively high proportion of financial operators in the engagement of operation which may result in their passiveness in timely investment, additional cost burden to carriers' in the handling inter-terminal T/S cargo transportation and inefficiency in terminal operation by the multiplicity of operators proved to be same recognized as so through the analysis. Therefore, in order to provide solutions for the problems and to strengthen Busan port's competitiveness, this research suggests the restructuring of operators mix as follows. To achieve sustainable growth of T/S cargo, global carriers' participation in terminal operation should be of utmost priority. To enhance the operational efficiency, the operators should be integrated. Similarly, the integration of operators will play a key role in verifying that national carriers' own terminal operation is an important factor in raising its competence. Finally, BPA's active engagement in the entire operation of port is also critical in public-oriented operation of the port. Whereas in the interactive analysis by taking the merits of Busan port into consideraion, global carrier's participation in operation, integration of operators and BPA's engagement in operation proved to contribute to the increase of T/S cargo and strengthening of operational efficiencies of Busan port.