• The KIPS Transactions:PartD
• /
• v.14D no.3 s.113
• /
• pp.319-328
• /
• 2007

As the coverage of Web services become wider and the number of implementation cases is growing, the importance of applying the Web services quality model to real world is increased. For maintaining the level of Web services qualify, it should be required to study on assurance method of Web services qualify level. Assurance for Web services, which is newly proposed by OASIS TC, means the totality of activities for managing the quality level of them. For managing Web service quality, Web service associates could usually use SLA(Service Level Agreement) method in which a service consumer contracts for some service level with a service provider and gives for penalty or pays incentives according to the result of evaluation of services. But, there are some difficulties in applying SLA to Web services, because Web services have publicity, multiple users, and 3rd party for management. So, we need a new assurance method for Web service by considering the characteristics of Web services. This paper provides the new concept of committed assurance level for Web services. This concept can be defined as the set of maximum level of quality expected by each user, which provide the consistent view of Web service quality. This paper presents the method for duality associates to preserve some quality level of Web service by using this concept.

• Journal of the Korean housing association
• /
• v.25 no.1
• /
• pp.33-40
• /
• 2014

As China has the largest number of elderly people in the world, the issue of the aged people has been a serious matter of concern in Chinese government and society and many studies have been done so far. However, the studies about the dwellings of the aged people that support their basic life are still insufficient. For this reason this study intends to identify the differences in elderly people's preferences according to their situations in aged life. This study surveyed 152 elderly residents aged 50 and over including early aged people in Beijing China about their residential preferences (types of residence, location of residence, size of residence, types of ownership) according to the four types of their situations in aged life, healthy couple, sick couple, healthy single and sick single. The survey conducted from 2013 April 10th to 15th. The results were as follows: Firstly, as the elderly situation became worse, preference for the independent residence decreased very rapidly while the preference for the elderly welfare facilities dramatically increased from the 0 point of the healthy couple and the preference for the elderly welfare facilities marked the highest point in case of the worst situation of sick single. Secondly, among the four different situations preferences for the urban residence were the highest and as the aged people's situation becomes worse, their preferences for urban life increased. Thirdly, healthy couple preferred a large size residence but as their elderly situation becomes worse, their preferences for the large size decreased and their preferences for small size increased dramatically, and in case of elderly singles, preferences for small size residence exceeded their preferences for large size residence. Fourthly, as elderly situation became worse preference for owning residence decreased and preference for rental residence increased and in case of the worst situation of sick single, preference for rental residence was higher than their preferences for their own residence. With this view of point, the residential preference of elderly people changes along with their aging situations. Thus, the government should consider the variable aging market, and develop a variety of aging residence which, can satisfy the different groups of elderly.

• Journal of The Korean Association For Science Education
• /
• v.25 no.3
• /
• pp.390-399
• /
• 2005

The purpose of this study was to examine university students' understanding of the nature of science, an aspect of scientific literacy, which is the goal of modern science education. To accomplish this, the differences and similarities by gender and major. on college students' understanding of the nature of science were investigated. 'Understanding of the Nature of Science' developed by Lee (2003) was implemented for this study. The instrument has three sub-scales; a scientific world view, scientific inquiry, and scientific enterprise. The instrument is only expected to give, and provides meaningful information on student understanding of the nature of science. A total of 120 college students, majoring in science education, liberal arts, and physical exercise participated in this study. Science education major students were verified to have a better understanding of the nature of science followed by liberal arts students and then physical exercise students. Moreover, men revealed slightly more comprehension that of women. More than 80% of students, majoring in science education, answered 11 out of 23 questions, approximately 50%. In the area of scientific inquiry, both science education and liberal arts students showed more comprehension that those in physical exercise. All participants showed relatively lower comprehension of the definition of scientific contribution than other subjects, but displayed a greater comprehension of the ethics of science. On the other hand, most students have relatively low apprehension in the contribution of science, while higher apprehension in the ethics of science.

• Journal of Korea Game Society
• /
• v.7 no.1
• /
• pp.31-42
• /
• 2007

In the natural world, most materials such as skin, marble and cloth are translucent. Their appearance is smooth and soft compared with metals or mirrors. In this paper, we propose a new GPU based hierarchical rendering technique for translucent materials, based on the dipole diffusion approximation, at interactive rates. Information of incident light, position, normal, and irradiance, on the surfaces are stored into 2D textures by rendering from a primary light view. Huge numbers of pixel photons are clustered into quad-tree image pyramids. Each pixel, we select clusters (sets of photons), and then we approximate multiple subsurface scattering term with the clusters. We also introduce a novel hierarchical screen-space interpolation technique by exploiting spatial coherence with early-z culling on the GPU. We also build image pyramids of the screen using mipmap and pixel shader. Each pixel of the pyramids is stores position, normal and spatial similarity of children pixels. If a pixel's the similarity is high, we render the pixel and interpolate the pixel to multiple pixels. Result images show that our method can interactively render deformable translucent objects by approximating hundreds of thousand photons with only hundreds clusters without any preprocessing. We use an image-space approach for entire process on the GPU, thus our method is less dependent to scene complexity.

• Cartoon and Animation Studies
• /
• s.48
• /
• pp.117-139
• /
• 2017

The possibility of interactivity of digital media environment is adopted in human expression system and integrates the dynamic aspect of digital technology with expressive structure, thereby transforming the paradigm of image acceptance as well as image expression range. Virtual reality images have an important meaning in that they are changing the one-way mechanism of production and acceptance of images that lead to producers-video-audiences beyond the problem of verisimilitude such as how vividly they simulate reality. First of all, the virtual reality image is not one-sided but interactive image composed by the user. Viewing a virtual reality image does not just see the camera shine, but it gets the same view as in the real world. Therefore, the image that was controlled through framing changes to be configured positively by the user. This implies a change in the paradigm of image acceptance as well as a change in the existing form of the image itself. In addition, the narrative structure of the image and the subjects that are formed in the process are also required to be discussed. In the virtual reality image, the user 's gaze is a fusion of the gaze inside the image and the gaze outside the image. This is because the position of the user as the subject of the gaze in the virtual reality image is continuously restricted by the device of the discourse such as the editing and the narration of the shot. The significance of the virtual reality image is not aesthetically perfect but it is reconstructed according to the user to reflect the existence of the user positively and engage the user in the image.

• Korean Journal of Social Welfare
• /
• v.62 no.1
• /
• pp.237-261
• /
• 2010

This study aims at exploring the employment experiences of people with psychiatric disabilities who look for job and work at workplace through deeply searching that of people with psychiatric disabilities from the point of their view. So this research shows how their employment experiences appears in our country and also what kind of meaning that gives to people with psychiatric disabilities. The Main question of this study is what the meaning and essence of employment experiences of people with psychiatric disabilities is. The qualitative research method was taken for widely understanding and lively writing employment experiences of people with psychiatric disabilities in the connection of their lives. Especially, it was set that phenomenological research methods introduced by Colaizzi's, which can be used for understanding the essential meaning of the experiences of research participants. The major themes could be analyzed as "Entering a narrow door", "Being raised on an unfamiliar stage", "Confusing in the fast world", "Enduring", "Adjusting to an ordinary life", and "Taking a step forward admitting their limitation". These are connected not in the state of independence state but dependence according to time flow. In this study the people with psychiatric disabilities in relation to employment are compared to salmons running back in a wild river. People with psychiatric disabilities have power through running back in their employment and lives like a long river. Even though there are difficulty things, they actively try to flow together with other people as mature people in our society. This research helps to make strategies of employment supports for people with psychiatric disabilities through their employment experiences.

• Journal of the Institute of Electronics and Information Engineers
• /
• v.51 no.12
• /
• pp.20-29
• /
• 2014

Recently, LTE is preparing to make a new leap forward LTE-A all over the world. As LTE privides high speed service, the role of mobile phones seems to change from voice to data service. According to Cisco, global mobile data traffic will increase nearly 11-fold between 2013 and 2018. Mobile video traffic will reach 75% by 2018 from 66% in 2013 in Korea. However, voice service is still the most important role of mobile phones. Thus, controllability of throughput and low BLER is indispensable for high-quality VoIP service among various type of traffic. Although the maximum AMR-WB, 23.85 Kbps is sufficient to a VoIP call, it is difficult for the LTE which can provide tens to hundreds of MB/s may not keep the certain level VoIP QoS especially in the cell-edge area. This paper proposes a new scheduling algorithm in order to improve VoIP performance after analyzing various scheduling algorithms. The proposal is the technology which applies more priority processing for VoIP than other applications in cell-edge area based on two-tier scheduling algorithm. The simulation result shows the improvement of VoIP performance in the view point of throughput and BLER.

• Journal of the Korean Chemical Society
• /
• v.62 no.4
• /
• pp.288-298
• /
• 2018

In this study, we surveyed pre- and post-perceptions of fourteen science teachers related to the atmosphere composition of molecules with different masses by the developed test. As a result of the test, the teachers were classified into two types of thoughts; One of them is considered the atmosphere to be a homogeneous solution, and the other is a thought that the composition ratio of the atmosphere was not homogeneous considering the different weights of particles. The two types were reclassified into three categories; one of them is considering large gravity effect, another is considering small gravity effect, and the other is considering medium scale gravity effect. Total six types of thoughts were found from the pre-test. After introducing crosscutting concepts which are related to the composition of atmosphere. The teachers discussed the phenomena with the molecular motion by weights of atoms and temperature, the homogeneity of the solution of air in chemistry domain. They also discussed with the relationship between mass and gravity and distance in physics domain. And the discussion included distribution of the atmosphere, convection phenomena, etc. After the discussion, the teachers changed their pre-conceptions to post-concoctions considering combined perspectives of gravity, mass, temperature, altitude etc. Through these changes, we are able to confirm the importance of crosscutting concepts covered in various disciplines. In the integrated science, we should help teachers to provide students with these types of thinking in order to form a coherent world-view and to carry out inquiry thinking as an intellectual tool.

• Strategy21
• /
• s.37
• /
• pp.104-143
• /
• 2015

China's new grand strategy, the "One Belt, One Road Initiative" (also Belt Road Initiative, or BRI) has two primary components: Chinese President Xi Jinping announced the "Silk Road Economic Belt" in September 2013 during a visit to Kazakhstan, and the "21^st Century Maritime Silk Route Economic Belt" in a speech to the Indonesian parliament the following month. The BRI is intended to supply China with energy and new markets, and also to integrate the countries of Central Asia, the Association of Southeast Asia Nations (ASEAN), and the Indian Ocean Region - though not Northeast Asia - into the "Chinese Dream". The project will be supported by the Asian Infrastructure Investment Bank (AIIB), due to open in 2016 with 57 founding members from all around the world, and China has already promised US$ 50 billion in seed funding. China's vision includes networks of energy pipelines, railways, sea port facilities and logistics hubs; these will have obvious commercial benefits, but also huge geopolitical significance. China seems to have two distinct aims: externally, to restore its historical sphere of influence; and internally, to cope with income inequalities by creating middle-class jobs through enhanced trade and the broader development of its economy. In South Korea, opinion on the BRI is sharply polarized. Economic and industrial interests, including Korea Railroad Corporation (KORAIL), support South Korean involvement in the BRI and closer economic interactions with China. They see how the BRI fits nicely with President Park Geun-hye's Eurasia Initiative, and anticipate significant commercial benefits for South Korea from better connections to energy-rich Russia and the consumer markets of Europe and Central Asia. They welcome the prospect of reduced trade barriers between China and South Korea, and of improved transport infrastructure, and perceive the political risks as manageable. But some ardently pro-US pundits worry that the political risks of the BRI are too high. They cast doubt on the feasibility of implementing the BRI, and warn that although it has been portrayed primarily in economic terms, it actually reveals a crucial Chinese geopolitical strategy. They are fearful of China's growing regional dominance, and worried that the BRI is ultimately a means to supplant the prevailing US-led regional security structure and restore the Middle Kingdom order, with China as the only power that matters in the region. According to this view, once China has complete control of the regional logistics hubs and sea ports, this will severely limit the autonomy of China's neighbors, including South Korea, who will have to toe the Chinese line, both economically and politically, or risk their own peace and prosperity.

• Journal of Korean Philosophical Society
• /
• v.129
• /
• pp.247-265
• /
• 2014

In this paper I will undertake three tasks: first, to identify the difference between John Rawls's liberal conception of liberty and Will Kymlicka's; second, to briefly examine the problems with liberal conception of liberty; finally, to propose a certain alternative that will be able to make liberal conception of liberty more meaningful In Kymlicka's view, Rawls seems to fail to make the best defence of freedom of choice because he wants to explain of individual freedom on the basis of Kant's moral theory about liberty. Kymlicka thinks that it is not a desirable way of defending liberal conception of liberty. According to his liberal theory, Rawls's defence of freedom of choice might make us think that we should have our freedom of choice for its own sake because freedom is the most valuable in the world. So Kymlicka wants to provide stronger argument to defend freedom of choice in liberalism. He insists that it is our projects and tasks that are most important things in our lives. Furthermore, he argues that we should conceive our freedom of choice as a precondition for pursuing those projects and practices that are valued for our good lives. Now I want to look at two concepts of liberty in liberalism with Rawls's theory and Kymlicaka's. In this paper, I shall look at criticisms of the liberal account of freedom of choice. These would give us a certain chance for understanding true freedom.