• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.12
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• pp.6034-6039
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• 2012

In this paper, this may appear to exacerbate it met slopes of the mobile robot moves to overcome this by driving can occur if the mobile robot system has its own sleep problems driving progress in until you hit the target and solvedriving straight driving safer model for adaptive fuzzy control method of mobile robot based control algorithm is proposed. First, we propose a model based adaptive fuzzy controller, if possible, the dynamics model of the mobile robot, including model-based controller is designed to determine if you can check the condition of the mobile robot climbing and driving the mobile robot to overcome the slope and the to overcome driving control. Enough considering the ground friction forces and ensure the stability of the mobile robot system and the disturbance compensation, etc. In this case, the controller design will be possible. In addition, the nonlinear model, the dynamic characteristics of the mobile robot control method of adaptive fuzzy control techniques in the design that you want to fully reflect Non-holonomic system of mobile robots and solve sleep problems, and will be useful enough, it was verified through computer simulations.

• Journal of KIISE:Computer Systems and Theory
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• v.34 no.9
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• pp.425-434
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• 2007

Even though Internet backbone speeds have increased in the last few years due to projects like Internet 2 and NGI, many high performance distributed applications are able to achieve only a small fraction of the available bandwidth. The cause of such problem is due to a character of TCP/IP. The primary goal of this protocol is reliable data transmission. Therefore high speed data transmission didn't be considered when TCP/IP is designed. Hence several researchers have been studied in order to solve the problem of TCP/IP. One of these research results, parallel transfer technique, solves this problem to use parallel TCP connections on application level. Additionally, this technique is compatibility. Recently, these researchers have been studied a mechanism to decide the number of parallel TCP connections. However, some researchers reported the number of parallel TCP connection base on only empirical results. Although hardware performance of host affects transmission rate, the hardware performance didn't be considered in their works. Hence, we collect all data related to transmission rate, such as hardware state information (cpu utilization, interrupt, context switch). Then, we analyzed collected data. And, we suggest a new mechanism determining number of parallel TCP connections for maximization of performance based on our analysis.

• The Journal of the Korea Contents Association
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• v.9 no.10
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• pp.274-283
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• 2009

To effectively and quickly respond to new forms of terrorism, a more organically integrated and coordinated system will be needed. As establishing the grounds of such a system based on laws would be most in congruence with legalism, it would be desirable to fundamentally establish an antiterrorism act. However, enactment of such counter-terrorism laws must be accomplished by means with which human rights violations against citizens may be minimized, contrary to what has been the case with third world nations. The act will need to include clauses that may relieve organizations, such as national human rights committees or citizen groups, of concerns over potential human rights violations. To address vulnerabilities of investigative rights issues which relate to cases relevant to acts of terrorism being delegated to the National Intelligence Service, the investigative jurisdiction shall be assigned to the public prosecutors and law enforcement officials as with other criminal proceedings. As for public concern that establishing the Anti-Terrorism Center under the National Intelligence Service, a secret service agency, may infringe upon human rights, functional and organizational dualism of the Anti -terrorism Center would be worth taking into account.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.4
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• pp.293-300
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• 2018

The purpose of this study is to investigate the educational needs for career development according to the job type of nursing college students. In order to achieve the purpose of the study, 146 nursing college students from K and P universities in the Busan and Kyungnam areas were analyzed using a career anchor questionnaire. In addition, 28 nursing college students who showed a higher level of tendency among job types were selected and divided into 4 teams, and a focus group interview was conducted based on the contents of the created map. Its purpose is to investigate the educational needs of nursing college students to enhance their career development. First, the career anchor types of the nursing college students showed the highest score in the areas of lifestyle, security and stability, while the lowest types of career anchor were pure challenge and general managerial competence. Second, the educational needs for career development were categorized into four areas, namely major competence, practical competence, personality competence, and resource management competence. The major competences are nursing expertise and skills. The practical competences consisted of ward task management, communication, crisis coping ability and personality competence and these were divided into cooperation and responsibility recognition. The resource management competence consists of time management ability and stress management ability. The results of this study are meaningful in that they can be used as the basic educational data for the career development of nursing college students in the future. In addition, it is expected that they can be applied to the development of a curriculum for the improvement of nursing practice.

• Archives of Craniofacial Surgery
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• v.10 no.1
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• pp.49-54
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• 2009

Purpose: Inevitably, Maxillary structural defect follows maxillary cancer extirpation. Maxillary reconstruction is over every surgeon's head. Every physician tried to overcome limited donor site of craniofacial defect. We considered to suggest optimal method of inferior orbital wall defect in functional point as well as esthetic point. Methods: We performed wide excision of maxilla and vascularized partial thickness calvarial bone flap to reconstruct the defect from cancer extirpation in three cases. We select ipsilateral superficial temporal artery, vein and outer cortex of parietal bone flap as donor. And we applied bone flap as inferior orbital wall structure. The bony surface was wrapped with fascia to prevent direct contact between orbital contents and rough bony flap surface. Computed tomography image was checked during follolw up period. Results: We can observe these patients for over two years. In all three cases, We can get fair inferior orbital wall structure. Even though they got radiation therapy, there was no limitation of extraocular movements, no diplopia. no enophthalmos. Also there was minimal donor site morbidity. Conclusion: We suggest vascularized calvarial bone flap is practically excellent strategy for inferior orbital wall reconstruction.

• Korean journal of communication and information
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• v.20
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• pp.141-176
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• 2003

This paper examined how Korean courts conceptualized and applied public interest defense of Penal Code to the libel cases raised by socially influential persons. For this, this paper analyzed a total of 58 libel cases in which 'public interest' was mentioned by Korean courts between 1981 and 2000. It was found that whereas truth or believed-to-be-true defense is emphasized In libel cases by politicians or public officials, public interest defense was emphasized in the cases by private figures. It was also found that Korean courts tended to think of matters related with 1) national security and social order, 2) prevention of asocial crime, 3) enlightening of public, and 4) protection of consumers' interest as public interest. Conclusively, 'public interest' is not simply applied as an independent legal defense, because Korean courts insistently concentrated on the truth of a story and did not even specifically define what is public interest. Constitution Court recently maintained that the slope of legal defense should be broadened when a story is about public matters. However, Korean courts will not be likely to accept public interest defense as an independent one for the time being.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.1
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• pp.251-258
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• 2010

The Republic of Korea is the maritime country of which its infrastructure of the country's development is based on maritime trade. This can be easily understood according to degree of dependence upon foreign trade, which is the economic indicator for expressing one country's economic characteristics. In 2008, the degree of dependence upon foreign trade of Korea is 83.5%, and this figure is much higher than that of Japan and China, which is 28.8% and 68% respectively. This in turn means that the development of Korea, and also the security of Korea depends greatly on safety of the sea. On the other hand, there is a growing trend that threats to the maritime security of Korea increases as examples seen in Somalia pirates. Thus we could say that interest on this issue should increase and also measures to counter those threats should be prepared. Also Korea should take the maritime security as important as critical factors as national security, which is similar to military threats from North Korea. Therefore all citizen's interests on the issue should be raised, and organizations that are capable of mutually integrating the functions related to maritime security should be established. Finally, Korea should actively participate international efforts on maritime security, and secure maritime security of our nation therefore contribute to the nation's prosperity and future development.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.2 no.1 s.2
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• pp.41-52
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• 2003

The purpose of this study was to test the effects of the pedestrian green signal adjustment on clearance of the turning vehicles impeding the through traffic flow at the signalized intersections, and thereby, suggest some operational criteria for adjustment of the pedestrian green signal. In order to test such effects, the pedestrian green time was adjusted so that it could started a few seconds later than the vehicle green time during peak hours, and thereby, the turning vehicle volume not cleared at the intersection was measured by extending the time gap by 2 seconds. (In general, the pedestrian green signal turns on at the same time as the vehicle green signal.) The results of this test can be summed up as follows; first, the longer the time gap was, the turning vehicle volume not cleared from the intersection decreased more. Second, in case there existed a storage space between intersection and crosswalk the effect of the turning vehicles on the through traffic flows was minimal. Third, at the pelican, the effect of the turning vehicles on the through traffic flow was minimal due to the structure of the intersection and the phase sequence. In conclusion, it was found that the adjustment of pedestrian green signal had the effect of enhancing the intersection operation. When adjusting the pedestrian green signal, it was deemed necessary to thoroughly survey the geometric structure of the intersection and collect the data on the turning traffic volume and thereby, apply the results of analysis flexibly to each intersection.

• The Korean Journal of Air & Space Law and Policy
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• v.20 no.2
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• pp.159-234
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• 2005

As so clearly have been demonstrated in the Gulf War and Iraq Freedom Fight, along with the civilian space exploration and development, the 'militarization' of aerospace technology and the 'battlefield-worthiness' of space are becoming more and more at issue. Korean peninsula, the last major theatre where the 4 world powers' national interests stand face to face, no doubt is in dire need for understanding and organizing necessary legislations for establishing national security from any space threats, such as satellite imaging, as well as countering against such threats. Compare to United States, Japan and China that have already declared the national security as the purpose of the space development, and equipped themselves with necessary legislations, Korea's legislations fall short of fully appreciating and effectively responding to the significance of military use of outer space and its control. This article will review legislations of leading countries' of space law and space technologies from two different perspectives. After briefly summarizing the problems of Korea's current legislations, particularly with the National Space Development Act (proposal), drafted by Ministry of Science and Technology, in mind, this article reviews and offers certain legislative directions to which Korea should pursuel for national security of outer space.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.3
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• pp.89-101
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• 2014

Recently, as domestic air traffic dramatically increases, the need of ATC(air traffic control) systems has grown for safe and efficient ATM(air traffic management). Especially, for smooth ATC, it is far more important that performance of display system which should show all air traffic situation in FIR(Flight Information Region) without additional latency is guaranteed. In this paper, we design a ASTERIX(All purpose STructured Eurocontrol suRveillance Information eXchange) parsing module to promote stable ATC by minimizing system loads, which is connected with reducing overheads arisen when we parse ASTERIX message. Our ASTERIX parsing module based on pattern matching creates patterns by analyzing received ASTERIX data, and handles following received ASTERIX data using pre-defined procedure through patterns. This module minimizes display errors by rapidly extracting only necessary information for display different from existing parsing module containing unnecessary parsing procedure. Therefore, this designed module is to enable controllers to operate stable ATC. The comparison with existing general bit level ASTERIX parsing module shows that ASTERIX parsing module based on pattern matching has shorter processing delay, higher throughput, and lower CPU usage.