• Title/Summary/Keyword: Draft system

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Optimized Trim and Heeling Adjustment by Using Heuristic Algorithm (휴리스틱 알고리즘을 이용한 트림 및 힐링 각도 조절 최적화)

  • HONG CHUNG You;LEE JIN UK;PARK JE WOONG
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2004.11a
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    • pp.62-67
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    • 2004
  • Many ships in voyage experience weight and buoyancy distribution change by various reasons such as change of sea water density and waves, weather condition, and consumption of fuel, provisions, etc . The weight and buoyancy distribution change can bring the ships out of allowable trim, heeling angle. In these case, the ships should adjust trim and heeling angle by shifting of liquid cargo or ballasting, deballasting of ballast tanks for recovery of initial state or for a stable voyage. But, if the adjustment is performed incorrectly, ship's safety such as longitudinal strength, intact stability, propeller immersion, wide visibility, minimum forward draft cannot be secured correctly. So it is required that the adjustment of trim and heeling angle should be planned not by human operators but by optimization computer algorithm. To make an optimized plan to adjust trim and heeling angle guaranteeing the ship's safety and quickness of process, Uk! combined mechanical analysis and optimization algorithm. The candidate algorithms for the study were heuristic algorithm, meta-heuristic algorithm and uninformed searching algorithm. These are widely used in various kinds of optimization problems. Among them, heuristic algorithm $A^\ast$ was chosen for its optimality. The $A^\ast$ algorithm is then applied for the study. Three core elements of $A^\ast$ Algorithm consists of node, operator, evaluation function were modified and redefined. And we analyzed the $A^\ast$ algorithm by considering cooperation with loading instrument installed in most ships. Finally, the algorithm has been applied to tanker ship's various conditions such as Normal Ballast Condition, Homo Design Condition, Alternate Loading Condition, Also the test results are compared and discussed to confirm the efficiency and the usefulness of the methodology developed the system.

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Design and Implementation of Mobile VTS Middleware for Efficient IVEF Service (효율적인 IVEF 서비스를 위한 모바일 VTS 미들웨어 설계 및 구현)

  • Park, Namje
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.39C no.6
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    • pp.466-475
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    • 2014
  • The IVEF service is the draft standard designed for exchange of information on sea traffic between the vessel traffic systems and between the vessels. Standardization of this service is under way as a part of the next-generation navigation system, called e-Navigation. The International Association of Lighthouse Authorities (IALA) suggests, on its recommendation V-145, the IVEF service model and the protocol for provisioning of this service. But the detailed configuration of this service must be designed by the users. This study suggests, based on the basic service model and protocol provided in the recommendation V-145, the implementation of the J-VTS middleware which will facilitate exchange of information on sea traffic. The J-VTS middleware consists of various components for providing the IVEF service and for processing the IVEF message protocols. The vessel traffic systems and the vessels corresponding to upper-layer applications may use the IVEF service with the functions provided by the J-VTS middleware, and the services are designed to be accessed according to the security level of users.

Research Design for the Verification of Constitutional Prescription Determinants (체질처방 결정요인 확인을 위한 연구설계)

  • Jin, Hee-Jeong;Kim, Sang-Hyuk;Baek, Young-Hwa;Jang, Eun-Su;Ryu, Jong-Hyang;Lee, Si-Woo
    • Journal of Sasang Constitutional Medicine
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    • v.27 no.2
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    • pp.222-230
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    • 2015
  • Objectives The purpose of this study is to design a research to find clinical factors involved in the decision-making process for determining the constitutional prescription based on prospective clinical data. Methods We have created a draft of the case report form. Therefore, seven constitutional experts was interviewed for additional items to be important used to determine the constitutional prescription in clinic. Interviews were done from December 2012 to March 2014, experts per person 2-3 times, took time of about 120 minutes per interview. Since then, we developed the final case report form through the expert meeting. At the same time, the developing the electronic case report form (eCRF) and the protocol to collect constitutional treatment cases was also discussed. Results & Conclusions The items of the case report form were subject general, lifestyle, health measurement, record of expert, prescription and evaluation after medication. The part of the clinical symptoms of the record of expert allowed to be recorded in the 5-point scale for the collection of quantitative data as much as possible. Assuming a re-visit of the patient, if necessary, twice the recording were to be possible. At the same time, the eCRF and the protocol to collect constitutional treatment cases were also developed. In this study, it will be able to more objectively standardize the medical decision making process that the experts of constitutional prescription decision. As a result, it will be possible to provide the standardized constitutional medical services.

An Analysis on the 2011 Elementary School Mathematics Curriculum Compared to the 2007 Elementary School Mathematics Curriculum with a Focus on Changes in Learning Topics (2007 초등수학과 교육과정과 2011 초등수학과 교육과정의 비교.분석: 변화 내용을 중심으로)

  • Park, Kyo-Sik
    • Journal of Elementary Mathematics Education in Korea
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    • v.15 no.3
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    • pp.579-598
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    • 2011
  • In this study, the 2011 elementary school mathematics curriculum was analyzed compared to the 2007 elementary school mathematics curriculum with a focus on changes in specified learning topics. First, the topics which are dealt with in the 2011 curriculum were critically discussed. Second, prominent features which can be found in learning topics in 2011 curriculum were found. The following three conclusions which can be obtained from above analyzed results were presented. First, system for curriculum development is necessary to supplement. The process of draft development for public hearing and final curriculum development is not exposed anywhere. It is necessary to clean up and disclose this process in order to study and develop next curriculum. Second, it is necessary to modify the way of stating in curriculum. it is necessary to specify and use the expressions to some extent the meaning of which are not sufficiently established and the meaning of which are ambiguous. Third, the achievement standards set by 2011 curriculum needs to be consistent. The principles for stating achievement standards are necessary. it is necessary to review the link between elementary and middle school curriculum is well-made.

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A Study on the Construction Process and Architectural Characteristics of the Korean Pavilion in 1900 Paris Universal Exposition; Focused on the Plan of Korean Pavilion designed by Comte de Mimerel, the General Affairs Committee (1900년 파리 만국박람회 "한국관" 의 건축경위 및 건축적 특성에 관한 연구;프랑스 측 총무대원 미므렐 백작(Comte de Mimerel)의 "한국관" 설계안을 중심으로)

  • Jin, Kyung-Don;Park, Mi-Na
    • Korean Institute of Interior Design Journal
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    • v.17 no.4
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    • pp.11-22
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    • 2008
  • This study aims at clarifying the circumstances under which the Korean Pavilion was constructed at the 1900 Paris Universal Exposition, and major architectural features of the pavilion building, In particular, this thesis studies the construction history of the Korean Pavilion newly developed by Comte de Mimerel on the part of France following the sudden death of Baron Delort de Gleon during the construction of the Korean Pavilion, as well as architectural features of the draft design. The Korean Pavilion designed by Comte de Mimerel completely reproduces Keunjeongjeon of Gyeongbok Palace, faithfully complying with the then design tendency of the exposition. Mr. Young Chan Min, the Vice Chairman of the Seoul Organization Committee, positively participated in the construction process, and traditional carpenters in Chosun, together with Mr. Young Chan Min, were dispatched to Paris to engage in the construction of the pavilion building. This is substantially in contrast to the earlier design. According to the analysis in this study, although the Korean Pavilion designed by Comte de Mimerel was primarily built with the fund of the French Government and under the French architectural system, as a result of the Korean Government's positive participation in the construction process, it was decided to use Geunjeongjeon, the symbol of Chosun, as a model of the pavilion, and therefore, the Korean Pavilion was recognized by the Europeans as a monument of complex and sophisticated civilization. Furthermore, commercial and colonialistic expressions, which were found in the earlier plan, are rarely found in the Korean Pavilion designed by Comte de Mimerel, and we can see that this is the result of the attempt to fully reproduce Geunjeongjeon, the major building of the Chosun royal court, in building the Korean Pavilion.

Genome sequence of Caballeronia sordidicola strain PAMC 26577 isolated from Cladonia sp., an Arctic lichen species (북극 지의류 Cladonia종에서 분리한 Caballeronia sordidicola균주 PAMC 26577의 유전체 서열 분석)

  • Yang, Jhung Ahn;Hong, Soon Gyu;Oh, Hyun-Myung
    • Korean Journal of Microbiology
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    • v.53 no.2
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    • pp.141-143
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    • 2017
  • Caballeronia sordidicola strain PAMC 26577 was isolated from Cladonia sp., a lichen collected from Svalbard Archipelago in the Arctic Ocean. Draft genomic sequences of PAMC 26577 were determined using Illumina and 182 contigs were submitted to GenBank and N50 value was 159,226. The genome of PAMC 26577 was comprised of 8,334,211 base pairs and %G+C content was 59.4. The genome included 8 ribosomal RNA genes and 51 tRNA genes as non-coding sequences. Protein-coding genes were 8,065 in number and they included central metabolism genes as well as butanol/butyrate biosynthesis, polyhydroxybutyrate metabolism, serine cycle methylotrophy genes, and glycogen metabolism. Membrane transporters were more than two-hundreds in number, but sugar phosphotransferase system and TRAP transporters were lacking. PAMC 26577 lacked CRISPR-associated sequences and proteins. No transposable elements were observed and there were only limited number of phage remnant regions with 11 phage-related genes.

A Study on the Guideline for the Data Deletion (데이터 폐기 지침 마련을 위한 기초 연구)

  • Lim, Tae-Hoon;Seo, Jik-Soo;Kim, Sun-Young
    • Journal of Information Management
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    • v.41 no.4
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    • pp.165-186
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    • 2010
  • This study aims to suggest the basis and criterion for the data deletion guideline to make the information systems effective and reduce the cost of system management. To make a frame of the guideline, we researched the laws and policies of USA, UK and Australia and the domestic laws and regulations related with the deletion of records. From this paper research, we prepared the draft guideline and gathered the opinion about it. Through this research and survey, we produced out the guideline including the criteria, the process and the way of data deletion. Adopting the guideline to a sample organization, we couldn't find any problem in deleting the unused data.

Standards for Endovascular Neurosurgical Training and Certification of the Society of Korean Endovascular Neurosurgeons 2013

  • Shin, Dong-Seong;Park, Sukh-Que;Kang, Hyun-Seung;Yoon, Seok-Mann;Cho, Jae-Hoon;Lim, Dong-Jun;Baik, Min-Woo;Kwon, O Ki;Kim, Bum-Tae
    • Journal of Korean Neurosurgical Society
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    • v.55 no.3
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    • pp.117-124
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    • 2014
  • The need for standard endovascular neurosurgical (ENS) training programs and certification in Korea cannot be overlooked due to the increasing number of ENS specialists and the expanding ENS field. The Society of Korean Endovascular Neurosurgeons (SKEN) Certification Committee has prepared training programs and certification since 2010, and the first certificates were issued in 2013. A task force team (TFT) was organized in August 2010 to develop training programs and certification. TFT members researched programs and systems in other countries to develop a program that best suited Korea. After 2 years, a rough draft of the ENS training and certification regulations were prepared, and the standard training program title was decided. The SKEN Certification Committee made an official announcement about the certification program in March 2013. The final certification regulations comprised three major parts: certified endovascular neurosurgeons (EN), certified ENS institutions, and certified ENS training institutions. Applications have been evaluated and the results were announced in June 2013 as follows: 126 members received EN certification and 55 hospitals became ENS-certified institutions. The SKEN has established standard ENS training programs together with a certification system, and it is expected that they will advance the field of ENS to enhance public health and safety in Korea.

A Study on Countermeasures of Electronic Component Industry according to Korean Emission Trading Scheme Enforcement (국내 배출권거래제 시행에 따른 전자부품산업 대응방안 연구)

  • Choi, Eun Kyung;Lim, Hoseon;Lee, Min Young;Shin, Seung-chol
    • Journal of Climate Change Research
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    • v.5 no.4
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    • pp.331-338
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    • 2014
  • The continued efforts to reduce GHG emission by international cooperation and each country are in progress. As part of these efforts, Korea's ETS is enforced in 2015. This was the time to make strategies for each company to respond Korea's ETS. This study was performed to suggest a draft of basic strategies for electronic component industry in current Korea's ETS stage are as follows; - Analyzing the nature of electronic component industry - Identifying needs for corresponding ETS of electronic component industry - Analyzing basic countermeasures for each stage of ETS - Suggesting drafts of basic strategies for electronic component industry in current Korea's ETS stage The result of this study, the current stage of Korea's ETS is moving from implementation of the scheme become determined and prepare the minimum corresponding to direct corresponding to the regulation and market change. Electronic component industry has many GHG emission growth(or change) factor, and it will be make electronic component industry as a buyer when Korea's ETS is enforced. Korea's ETS will be clearly act as a regulation rather than new business for electronic component industry. Therefore, identifying the Korea's ETS as a regulation is resonable strategy for corresponding the scheme. The basic strategies of electronic component industry th responding Korea's ETS are as follows; - Building internal organization and decision-making system before enforcement the Korea's ETS - Establishing internal basic corresponding strategies according to carbon price forecast scenarios - Considering the energy consumption and GHG emissions in design phase and preparing the global ETS market in mid or long term.

Study on icebreaking performance of the Korea icebreaker ARAON in the arctic sea

  • Kim, Hyun-Soo;Lee, Chun-Ju;Choi, Kyung-Sik;Kim, Moon-Chan
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.3 no.3
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    • pp.208-215
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    • 2011
  • A full-scale field trial in ice-covered sea is one of the most important tasks in the design of icebreaking ships. The first Korean icebreaking research vessel 'ARAON', after her delivery in late 2009, had a sea ice field trial in the Arctic Sea during July-August, 2010. This paper describes the test procedures and data analysis on the icebreaking performance of the IBRV ARAON. The data gathered from the icebreaking performance test in the Chukchi Sea and the Beaufort Sea during the Arctic voyage of ARAON includes the speed and engine power of the ship as well as sea ice thickness and strength data. The air temperature, wind speed and heading of the ship were also measured during each sea ice trial. The ARAON was designed to break 1 m thick level ice with a flexural strength of 630kPa at a continuous speed of 3knots. She is registered as a KR POLAR 10 class ship. The principal dimensions of ARAON are 110 m, 19 m and 6.8 m in length, breadth and draft respectively. She is equipped with four 3,500kW diesel-electric main engines and two Azipod type propulsion motors. Four sea ice trials were carried out to understand the relationship between the engine power and the ship speed, given the Arctic ice condition. The analysis shows that the ARAON was able to operate at 1.5knots in a 2.5m thick medium ice floe condition with the engine power of 5MW, and the speed reached 3.1 knots at the same ice floe condition when the power increased to 6.6MW. She showed a good performance of speed in medium ice floe compared to the speed performance in level ice. More detailed analysis is summarized in this paper.