• Journal of KIISE:Computing Practices and Letters
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• v.15 no.2
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• pp.114-124
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• 2009

In this paper, we propose a practical TCP friendly rate control scheme that considers the minimum channel bandwidth of the network when transporting SVC (scalable video coding) video over IP netowrks such as Internet. RTP and RTCP is mainly designed for use with UDP (User Datagram Protocol) for real-time video transport over the Internet. TCP-friendly rate control was proposed to satisfy the demands of multimedia applications while being reasonably fair when competing for bandwidth with conventional TCP applications. However the rate control model of the conventional TCP-friendly rate control scheme does not consider the minimum channel bandwidth of the network. Thus the estimated channel bandwidth by the conventional rate control model might be quite different from the real channel bandwidth when the packet loss ratio of the network is very large. In this paper, we propose a modified TCP-friendly rate control scheme that considers the minimum channel bandwidth of the network. Based on the modified TCP-friendly rate control, we assign the minimum channel bandwidth to the base layer bitstream of SVC video, and remaining available bandwidth is allocated to the enhancement layer of SVC video for the TCP friendly scalable video transmission. It is shown by simulations that the modified TCP-friendly rate control scheme can be effectively used for a wider range of controlled bit rates depending on the packet loss ratio than the conventional TCP-friendly control scheme. Furthermore, the effectiveness of the proposed scheme in terms of objective video quality is proved by comparing PSNR performance with the conventional scheme.

• Journal of Korean Society of Forest Science
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• v.25 no.1
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• pp.49-71
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• 1975

The importance of bamboo as raw material for bamboo wares and several kinds of industrial products is highly appreciated at home and abroad. But different kinds of bamboo-bundle systems have been traditionally used in the local areas. There being no reasonable bamboo-bundle system, we have a lot of difficulty in trading bamboo products and executing adrinistmative works. Therefore, a reasonable bamboo-bundle system based on scientific proofs needs to be tested and established for fair trade and administration. This study is carried out to solve the above difficulty with statistical investigation and analysis. The results obtained are as follows. 1. The larger the circles at eye-height become, the more the possibility of the largest internode covering the span between eye-height and 1/4 height increases. 2. The longest internodes are distributed according to a rule without relation to circles at eye-height. 3. The tapering grade of bamboo culms is very high and its form is almost the same without relation to its size. (Form exponent; 0.71-1.05, eye-height form factor; 0.60-0.66, 1/4 becomes, seeing that the circle grade and the percentage of actual volume height form factor; 0.61-0.69). 4. The larger the circles at eye-height are, the lower the percentage of actual volume have negative curve relation to each other. 5. It is considered that the numbers of bamboos bundled in a "Sok" is not decided according to the usefulness of bamboos, judging from the fact that the outputs of bamboo wares per "Sok" in every circle grade are not the same. 6. As the results of the regression analysis, the empirical formulae of several amounts to circles at eye-height and culm length are as follows; Volume, $${\hat{y}}_i=\bar{3}.821874+2.013181log\;C_i+0.839128log\;H_i$$ $$V=0.0066355\;C^{2.013181}\;H^{0.839128}$$ Actual volume, $${\hat{y}}_{ai}=3.915338+0.776549log\;C_i+1.857000log\;H_i$$ $$V_a=0.0082288\;C^{0.776549}\;H^{1.857000}$$ Weight, $$w_i=3.869148+1.936410log\;C_i+0.566904log\;H_i$$ $$W=0.0073986\;G^{1.936410}\;H^{0.565904}$$ 7. Korean Phyllostachys bambusoides Sieb. et Zucc. is almost the same as that of Japan in several amounts, just the same especially in the weight. 8. It is found that the bamboo-bundle systems of Korea and Japan have much closer relation to the weight than other amounts. So It is, therefore, considered that the weight is important factor in deciding bamboo-bundle system. 9. According to the item 8, I should like to propose the appropriate numbers per "Sok" adjusted on the basis of the weight in the Table 18.

• Journal of dental hygiene science
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• v.15 no.2
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• pp.91-97
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• 2015

The purpose of this study was to examine any possible differences among adolescents in unmet dental care needs according to their demographic and socioeconomic characteristics and oral health status and influential factors on the basis of the fifth national health and nutrition examination survey data. The findings of the study were as follows: Unmet dental care needs were accounted for 19.84 percent. As for the reason, many replied that they couldn't afford to leave school during school hours, and economic factors. As a result of analyzing what affected their unmet dental care needs, this experience was more common in the older age groups than in the 6~12 years age group, and the experience was less common in the respondents with a larger income. As for the subjective oral health status, the experience was 0.61-fold and 0.72-fold less in the respondents who perceived their health as fair or good than who thought their health was poor respectively. And there was a tendency that getting regular dental checkups led to 0.22-fold less experience. Given the above-mentioned findings, the kind of policy that makes dental care services more accessible to youth in consideration of socioeconomic circumstances should be carried out. As many of the adolescents couldn't leave school during school hours, schools should be equipped with dental clinics to improve accessibility to dental care services.

• 동북아역사논총
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• no.59
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• pp.150-186
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• 2018

This paper explains what Japanese progressive liberalism was in postwar Japan by clarifying Maruyama Masao's "Cold War Liberalism," focusing especially on his realism and nationalism searching for "democracy" and "peace" in the context of the early Cold War Japan. Maruyama's Cold War liberalism can be grasped from two perspectives: how the Cold War defined his liberalism and how Maruyama interpreted the Cold War as a liberalist in postwar Japan. The liberal interpretation of the Cold War captures the spatial manifestations of liberalism in the Cold War while Cold War liberalism was to grasp the temporal succession of modern Japan. Maruyama revealed his liberal thinking by combining it to his idea of nationalism and realism. He was concerned about the reshaping of the fascist atmosphere provoked by anti-communism emerging from 186 | 동북아역사논총 59호the Cold War confrontation structure. He sought "neutrality" and "peace" to overcome the so-called "two worlds" of the Cold War. And he stressed the importance of "fair judgment" and "autonomous association" to restrain the fascistic atmosphere in postwar Japan. For Maruyama, subjectivity aimed at the concept of "nation" rather than "citizen," and nationalism was a condition for "democracy" and "peace" in postwar Japan. Maruyama's critical liberalism worked through nationalism and realism.

• Korean Journal of Comparative Education
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• v.26 no.4
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• pp.173-198
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• 2016

The purpose of this study is to analyze the characteristics of Educational Reforms Policy in lately Japan and to evaluate it. Especially focus on the activities of the [MEXT; Ministry of Education, Culture, Sports, Science and Technology] and [CCE;The Central Council for Education] This article composed of five chapters; Implication and problem situation, History of the Japanese educational reforms, the characteristics in the site of process of educational reforms policy, evaluation on the main policies, and Conclusion(contain the suggestion for Korea). The method of study composed of the literature search and interview. The System Analysis[input-process-output-feedback] is used as a model of the analyze the characteristics of educational reforms policy. By the new Basic Act on Education, the principles of educational administration is changed. Education administration shall be carried out in a fair and proper manner through appropriate role sharing and cooperation between the national and local governments(Article 16). As a conclusion, The initiative in the establishment of educational reform plans has gone over to the cabinet side from MEXT. And evaluate the five policies. That is Japan's Basic Plan for the Promotion of Education, The new Basic Act on Education(enacted on 2006), Provincial Governor's (Tokyo & Oska) Educational Reform Plan, Reform plan of the Boards of Education, and Improvement Policy of the Quality of Teachers.

• Journal of Legislation Research
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• no.44
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• pp.63-101
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• 2013

This article firstly explores into the concepts, components, and pictures of institutional realization of competition and diversity respectively on the premise that competition and diversity comprise the primary objectives to be pursued by the broadcasting-related laws which provide the concrete measures of media policy, and argues that while the competition objective has differentiation factors, there are also particularities in the diversity value in the broadcasting-related laws as sector-specific competition laws. Then assuming that special competition rules including structural regulatory measures particularly in the broadcasting market are required in order to realize values of competition and diversity harmoniously, this article suggests the following improvement directions for regulations aimed at protection of competition and diversity in the broadcasting-related laws. The first one is with the improvement method for regulations aimed at protection of competition. Regulation on share of audience as an ex ante regulation of status and regulation on prohibited activities as an ex post regulation of conduct may play important roles in substituting the causative regulation while seeking for diversity value. For this purpose, it is needed to develop a concrete method that incorporates diversity-related factors as consideration factors in the standard for determining illegality of prohibited activities by inference to methods of determining illegality in the competition law. The second one is with the improvement method for regulations aimed at protection of diversity. This could be considered from three viewpoints that are the setting of regulatory objectives, the identification of alternative regulatory measures, and the choice of regulatory measures and levels suitable for regulatory objectives. From these viewpoints, the regulatory framework should be improved mainly with institutional measures in which diversity value is used for tools of assessment and analysis, not just remaining as mere rhetorical devices, and whether or to what extent to maintain regulations seemingly unreasonable in terms of harmonization with economic objectives such as competition should be discreetly reviewed.

• Review of Culture and Economy
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• v.21 no.2
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• pp.53-88
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• 2018

Among the cultural industries, the game industry is the most economically valuable industry. It has been about twenty years since the game policy has been implemented and the game laws have been enacted. If the law is a willing expression for the realization of the policy, the orientation of the game policy can be grasped through revision of the game laws. SOUND RECORDS, VIDEO PRODUCTS, AND GAME SOFTWARE ACT, established in 1999, and GAME INDUSTRY PROMOTION ACT, which was enacted in 2006, are regulated by many revisions. In this paper, I try to understand the direction and meaning of Korean game policy(classification, game dysfunction, gambling, industry growth) through the contents of the revision of the game law for 20 years. The game policy shown through the amendment of the game law is intended to protect the game by regulating the game, and to protect the game user by preventing the gambling and preventing the game dysfunction, and to increase autonomy of users and choice of producers by switching to self rating system, and based on this, an environment for continuous industrial growth is created. In the future, game policies should consider cooperation with social areas beyond game-specific areas. On the other hand, it needs to respond to new agendas such as polarization of industrial structure, fair environment, employment environment.

• Journal of Legislation Research
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• no.44
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• pp.655-688
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• 2013

Most of all the transfer of undertakings in such a service provision business as labour-intensive operation creates uncertainty of employment, aggravates terms of employment and breaks a trade union. However there are no regulations in Korea to protect employees from these undesirable situations. On the other hand Great Britain has introduced the concept of a transfer of undertakings by service provision change in 2006. It was intended to remove or at least alleviate the uncertainties and difficulties created by the need under TUPE 1981 and EU Directive to establish a transfer of a stable economic identity which retained its identity in the hands of the alleged transferee. In contrast to the words used to define transfer in the 1981 Regulations 'service provision change' is a wholly new statutory concept and distinguished from the economic entity. The new provisions seems to be straightforwards and the circumstances in which service provision change is established are clearly set out in Regulations. In this context there is no need for a judicially prescribed multi-factorial approach, as advanced by European Court of Justice like Spijkers test. The new concept of service provision change apply even though there are some minor difference or differences between the nature of the tasks carried on after service provision change as compared with before it. A commonsense and pragmatic approach is required and It is enough only to ask whether the activities carried on by the alleged transferee are fundamentally or essentially the same as those carried out by the alleged transfer. TUPE 2006 of Great Britain far exceeding the scope of the Acquired Rights Directive is full of suggestions as a model of legislation to secure a stable employment itself and favorable and fair conditions of employment. More active efforts are needed for lawmaking to prohibit a dismissal and vary conditions of employment for the reason of the transfer of undertakings itself.

• The Journal of the Korea Contents Association
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• v.19 no.10
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• pp.487-510
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• 2019

The purpose of this study is to examine the impact of Ethical Leadership on job engagement, organizational commitment and unethical pro-organizational behavior and to analyze the dual mediation effect of job engagement and organizational commitment. We used 565 questionnaires collected by members in domestic companies. The result of the analyses are as follows: First, Ethical Leadership has no positive effect on unethical pro-organizational behavior. Second, in the relationship between Ethical Leadership and unethical pro-organizational behavior, job engagement does not play a mediating role, but organizational commitment plays a mediating role. Third, in the relationship between Ethical Leadership and unethical pro-organizational behavior, job engagement and organizational commitment play a dual mediating role. The theoretical implication is that this study once again confirmed the behavior patterns such as cognition, emotion, attitude and behavior of members in the organization. In addition, this study can contribute to theoretical expansion by explaining that these behavior patterns are identified by social exchange theory. The practical implication is that this study confirmed that members in the actual management field are willing to perform unethical pro-organizational behavior in order to achieve the organization's goal efficiently and effectively. Therefore, it is suggested that active efforts should be made to recognize these negative influences and possibilities at the organization level and to create a clean and fair organizational culture and environment that everyone can recognize at the social level.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.32 no.4
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• pp.13-28
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• 2019

Objectives : The purpose of this study is to report the effectiveness of Korean medical treatment on 222 patients with alopecia areata. Methods : The subjects of this study were 222 patients who had received Korean medical treatment among the patients who visited the Balmer's Korean Medicine Clinic from January 1, 2016 to December 31, 2017. The extent of the alopecia areata was measured every month to determine the improvement. We analyzed the relationship between the types of alopecia areata, the extent of hair loss, duration of illness, age at first visit, and the treatment of alopecia areata. Results : 1. There were 100 males(45.0%) and 122 females(55.0%). The mean age of patients was 35.3 years old. 2. Of the 222 patients, 142(64%) were "cured". 31(14%) showed "good", 21(9.5%) showed "fair", 28(12.6%) showed "poor" improvement. 3. According to clinical records, of the 64 patients with alopecia areata(AA), 48(75.0%) were cured. Of the 100 patients with alopecia areata multiplex(AAM), 68 patients (68.0%), 12(50.0%) out of 24 patients with ophiasis, 5(55.6%) out of 9 with alopecia semi-totalis(AST), 3(50.0%) out of 6 patients with alopecia totalis(AT), 6(31.6%) out of 19 patients with alopecia universalis(AU) were cured. 4. Patients with the wider hair loss extent and with more severe type of alopecia areata required longer treatment period to cure, and the cure rate was lowered(p<0.05). 5. The shorter duration of the disease was related to the higher cure rate(p<0.05). If the treatment was started after six months of the duration, the cure rate was lowered. Therefore, beginning treatment within six months of the onset is recommended. 6. The period until terminal hair showed was 1.5 months for AA, 1.7 months for AAM, 1.6 months for ophiasis, 1.9 months for AST, 2.3 months for AT, 3.2 months for AU. 7. The treatment period to cure was 4.9 months for AA, 7.3 months for AAM, 7.7 months for ophiasis, 6.8 months for AST, 7.7 months for AT, 16.3 months for AU. 8. The major prognostic factors were extent and type of alopecia, duration of the disease and relapse. Conclusions : We analyzed the effectiveness of Korean medical treatment through cure rate according to the prognostic factors. This study will provide useful data for the treatment of alopecia areata.