• Journal of the Microelectronics and Packaging Society
• /
• v.20 no.3
• /
• pp.45-51
• /
• 2013

Thermal annealing tests were performed in an in-situ scanning electron microscope chamber at $130^{\circ}C$, $150^{\circ}C$, and $170^{\circ}C$ in order to investigate the effects of solder structure on the growth kinetics of intermetallic compound (IMC) in Cu/Sn-3.5Ag microbump. Cu/Sn-3.5Ag($6{\mu}m$) microbump with spreading solder structure showed $Cu_6Sn_5$ and $Cu_3Sn$ phase growths and then IMC phase transition stages with increasing annealing time. By the way, Cu/Sn-3.5Ag($4{\mu}m$) microbump without solder spreading, remaining solder was transformed to $Cu_6Sn_5$ right after bonding and had only a phase transition of $Cu_6Sn_5$ to $Cu_3Sn$ during annealing. Measured activation energies for the growth of the $Cu_3Sn$ phase during the annealing were 0.80 and 0.71eV for Cu/Sn-3.5Ag($6{\mu}m$) and Cu/Sn-3.5Ag($4{\mu}m$), respectively.

• Journal of the Korean earth science society
• /
• v.27 no.3
• /
• pp.260-268
• /
• 2006

Students' affective attitude not only influences their achievement in a meaningful way but is also an important educational goal in its own right. This research investigated how students' interest in science varies among elementary, middle, and high-school students based on surveys and reviews of previous research results. We analyzed students learning attitude in terms of (1) interest in and enjoyment of science, (2) instrumental motivation in science, (3) science learning anxiety, and (4) self-concept in science. Major findings are that students showed more negative attitudes in intrinsic motivation, instrumental motivation, value perception of science, and confidence in science as they move in to a higher school level. According to the students' explanation, science classes get boring in higher grades because of difficult contents, lack of experiments and activities, and the teachers' monotonous explanations. Based on the results, recommendations on how to improve students' attitudes towards science are suggested. First of all, we need to secure more science instructional hours in the school curriculum than the 7th national curriculum to implement improved science teaching and learning methods.

• The Journal of the Korea Contents Association
• /
• v.9 no.6
• /
• pp.216-224
• /
• 2009

The purpose of this study was to examine the periodontal disease awareness and periodontal health status of industrial workers in an attempt to help facilitate their prevention and treatment of periodontal diseases. The findings of the study were as follows: 1. In regard to a knowledge acquisition route on periodontal diseases, the largest number of the industrial workers investigated(36.3%) learned about the diseases from dental hospitals. As to scaling cycle, the younger workers deemed it necessary to get their teeth scaled every six months. In contrary, the older workers considered it advisable to do that about once a year. Age made a statistically significant difference to that (p<.05). 2. As for the state of the periodontal diseases of the workers, the greatest group (26.5%) found themselves to have something between their teeth often. The second most prevalent peridontal disease was gingival bleeding(24.5%), and the third largest group(24.5%) had teeth that were sensitive to cold. The fourth greatest group(15.9%) had the swollen gums from time to time, and the fifth largest group(4.5%) had shaken teeth. 3. Concerning the cause of periodontal diseases, the largest group (48.8%) cited an incorrect toothbrushing. As to the prevention of periodontal diseases, the greatest group(66.8%) viewed the right toothbrushing as the best way for that as well.

• Korean Journal of Legislative Studies
• /
• v.23 no.1
• /
• pp.37-79
• /
• 2017

The major purpose of this paper is to analyze the evolution of the presidential system in South Korea during the past three decades ever since the country's democratization in 1987 from the comparative institutional perspective. As imperial presidentialism during the so-called three Kim's era(1987-2003) disappeared right after the political retirement of the three Kims in 2003, then president-centered presidentialism emerged during the post-three Kim's era, since the country's recent three presidents possessed their relatively low-level of partisan power in terms of their control of National Assemblies and their respective presidents' parties during their presidencies. South Korea has now a strong possibility to transform the current president-centered presidentialism into the American-style separatist presidential system in the near future, since the country's National Assembly has continuously been making its efforts to function as an effective governing body being compatible with the American Congress. In addition, the country's judiciary branch has effectively been playing a political role like the US supreme court ever since the country's democratization in 1987. It is also emphasized that South Korea's civic society is currently playing as a guardian of democracy through its effective and responsive political participations in many public sectors for promoting civic liberties, public welfare, and other democratic values. South Korea now needs to carry out constitutional revisions, political reforms of legislative system, party system, and electoral system as well as correct some contradictory political understandings and habits in a way to transform the current president-centered presidentialism into American-style separatist presidential system in the near future.

• Journal of the Korea Convergence Society
• /
• v.10 no.7
• /
• pp.47-54
• /
• 2019

The purpose of this study was to investigate the effect of visual conditions on the static balance of stable and unstable surfaces. Thirty healthy adults participated in this study (13 men, 17 women). Visual conditions were set as vertical, horizontal, and diagonal. It was performed on the pad to measure the balance on the unstable support surface. Using the balance measuring instrument, the General Stability Index, Weight Distribution Index, and Weight Distribution was measured. Paired t-tests were used for ground-based comparisons and one-way ANOVAs were used for comparisons within the same ground. The general stability index showed a significant difference according to the horizontal and vertical line directions on the stable support surface(p<.05). According to the comparison between the grounds, the weight distribution index on the unstable support surface showed a significant difference(p<.05). Weight distribution showed significant differences between the left and right eyes on the support surface with the stable and the unstable horizontal visual condition(p<.05). In static balance training, vertical and diagonal visual direction conditions are predicted to be helpful for training.

• Korean Journal of Child Education & Care
• /
• v.19 no.2
• /
• pp.117-128
• /
• 2019

Objective: The purpose of this study is to investigate the effect of mother's acceptance parenting attitude and optimism on children's self-regulation including cognitive, emotional, and behavioral regulation. Methods: The subjects were 361 3, 4, 5 - year - old children and their mothers who attended to the early childhood education institutions. One-way ANOVA was conducted to find out age differences in self-regulation. The regression analysis were conducted to find out whether the mother's optimism could predict their children's self-regulation. The stepwise regression analysis were conducted to find out whether the mother's acceptance parenting attitude could predict their children's self-regulation. Results: As for the self-regulation, there were significant age differences in the cognitve regulation and the behavioral regulation, but not in the emotional regulation. It implies that the abilities of cognitive and behavioral regulation increase as the age level goes up. As for the relations between mother's optimism and their children's self-regulation, only the permanence factor of the mother's optimism predicted children's cognitive, emotional, and behavioral regulation. As for the relations between mother's acceptance parenting attitude and their children's self-regulation, two components of mother's acceptance parenting attitude (unconditionally love & right) could predict children's cognitive, emotional, and behavioral regulation. The component of unique could predict the cognitive and emotional regulation. Conclusion/Implications: These results suggest that mother's optimism and acceptance parenting attitude positively affect on the development of self-regulation ability in children.

• Journal of Distribution Research
• /
• v.15 no.5
• /
• pp.217-235
• /
• 2010

In franchise industry, territorial restraint is a system that imposes exclusive right to franchisers in a certain business area. To the franchisers, this system guarantees monopoly profits in a local market and exclusive rights during the contract periods. In such a way, franchisee generates a big revenue at once on the basis of franchiser's initial investment such as interior cost and franchise fee, it must have supervised franchiser's moral hazard for the territorial restraint agreement. Rather than territorial restraint can be a system to give exclusive right to franchiser's so that they neglect their own sales and too much rely on headquarter's brand and marketing activities without their own efforts. This paper assesses the implication of territorial restraint by examining the effect on brand extension, degree of contract termination. Drawing on research in transaction cost agreement and opportunism, the authors suggest that franchisee is highly likely to launch similar brand which is not effected on previous contract when territorial restraint is set out in the contract system. Moreover, the authors find that the degree of contract termination will be high in the existence of territorial restraint due to the franchisee's opportunism. The results imply that territorial restraint induces franchisee's opportunistic strategy more aggressively so that the possibility of brand extension or new brand launching will be increased. At the same time, franchisee is aggressively seeking for the reason for contract termination due to the pursuit of its profit maximization. Based on some empirical findings, this paper concludes with policy implications and some necessary fields of future studies desirable.

• The Journal of the Korea Contents Association
• /
• v.14 no.4
• /
• pp.456-466
• /
• 2014

This is a study of George Lindbeck's postliberalism that views religion as a cultural-linguistic approach. Knowing that the conceptual-propositional approach of the traditional Christian theology and the experiential-expressive approach of liberalism cannot be a solution for the post-modem religious phenomenon, George Lindbeck proposes an alternative. He proposes a cultural-linguistic approach to overcome the previous approaches. The first insight of Lindbeck's postliberalism is to understand religion as culture or language, because human beings become acquainted with a religion as they learn a language. The second insight comes out of the first, to understand doctrine as grammar. If we understand religion and doctrine this way the troubles and conflicts among religions will be resolved naturally, because each religion can be interpreted in its own system just as a language cannot be said to be good or bad, right or wrong. This approach makes several contributions as follows: it promotes a dialogue among religions, it emphasizes practice; and it preserves the Bible as an authoritative theological text. However it also brings many limitations as follows: it emphasizes the church's interpretation rather than the text's own interpretation; it views the truth simply as coherence; it promotes radical relativism and elitism; and through theological eschatology he makes his theory return to a propositionalism. Accordingly, the researcher concludes that Lindbeck's cultural-linguistic theory of religion is not an alternative that overcomes the limitations of theological conservativism and liberalism.

• Korean Journal of Logic
• /
• v.15 no.1
• /
• pp.53-85
• /
• 2012

There are various views in the boundary of deflationism of truth in regarding the nature and role of truth. This paper surveys the issue on how the core thesis uniting the deflationism is characterized. First, I will examine some comments on what is the central thesis supported or rejected by the deflationists and inflationists, mainly discussing Armour-Garb and Beall's work, and will show on which aspects they are unsatisfying. From this, I will suggest these statements: first, the central cores of deflationism are conceptual fundamentality and explanatory exhausting. Second, the particularity thesis, understood in an alternative way, cannot be a central claim of deflationism. Third, another important claim from deflationists, the expression thesis, can be derived from the two main thesis above. But it is still not clear enough what the non-expressive explanatory role of truth, which is denied by the expression thesis. So I will check some possible clarifications on it and discuss why they should be rejected. And I will introduce Dummett's view on the role of truth condition in truth conditional explanation of meaning, and I will claim that if Dummett is right why the role must be a inflated one. Finally, I will suggest a further implication that the understanding on the both sides can be widened by connecting considerations on both views.

• Journal of the Korean Society for Library and Information Science
• /
• v.29
• /
• pp.257-279
• /
• 1995

Cooperative program planning and teaching is a strategy for developing and implementing resource based learning. This approach combines the classroom teacher's subject expertise and knowledge of the students with the teacher­librarian's specialized knowledge of the availability and use of learning materials. And the purpose of cooperative program planning is to develop learning experiences or units of study that effectively integrate the student's resource center activities with other learning experiences. There are also some conditions that are conducive to effective planning sessions. First, the teacher-librarian must be prepared to initiate planning with teachers, rather than waiting for teachers to come to them. Second, the teacher-librarian must be prepared to present suggestions in such a way that the teacher can respond. The purpose of this study is (1) to investigate the planning process of cooperative program planning and teaching in the previous studies and (2) to find general problems when the cooperative program planning and teaching apply in actual situation. For these purposes, I chose a school library and a teacher-librarian in Seoul to observe how this cooperative program planning and teaching carry out in the school library. Main findings are summarized as follows: (1) A teacher who teaches alone for one grade is more proper to carry out the cooperative program planning and teaching. Young teachers are usually more active to change their teaching methods. (2) The cooperative program planning and teaching is a program what needs a lot of materials. When there is no right reference book in a school library, it would be good to access DB through PC telecommunication. It is also possile to contact lirarians who work in large public libraries or university libraries. (3) The cooerative program planning and teaching needs cooperative working between a teacher-librarian and a teacher. Thus a teacher-librarian should be in his school in the day time like the other teachers for the program's planning process. ( 4) There has to be a guide to change into resource based learning in teaching method. Thus the Korean Library Association or Korean Library and Information Science Society should offer a seminar or a workshop about cooperative program planning and teaching for the teacher-librarians. (5) It needs a system that a teacher-librarian can know about student's assignments so that he can prepare reference books for them. (6) The school library can be able to offer excellent service like cooperative program planning and teaching to the teachers and students according to a teacher-librarian's enthusiasm.