• Bulletin of the Korean Mathematical Society
• /
• v.51 no.2
• /
• pp.401-408
• /
• 2014

We establish a new approach for the sums of products of the Euler numbers by using the relation of values at non-positive integers of the representation of the multiple Hurwitz-Euler eta function in terms of the Hurwitz-Euler eta function.

• Communications of the Korean Mathematical Society
• /
• v.11 no.2
• /
• pp.495-501
• /
• 1996

There is currently a regain of interest in ADI (Alternating Direction Implicit) method as a preconditioner for iterative Method for solving large sparse linear systems, because of its suitability for parallel computation. However the classical ADI is not applicable to FE(Finite Element) matrices. In this paper wer propose a Block-ADI method, which is applicable to Finite Element metrices. The new approach is a combination of classical ADI method and domain decompositi on. Also, we provide a partial proof of the convergence based on the results from the regular splittings, in case the discretization metrix is symmetric positive definite.

• East Asian mathematical journal
• /
• v.26 no.2
• /
• pp.219-232
• /
• 2010

The main purpose of this work is to suggest a new approach to teaching general topology to undergraduate students. First, we change the order of contents. Usually, we introduce definitions, examples, theorems, and problems in this order. But, showing familiar examples of some concept of topology prior to the definition of one is the best method so far as I know from teaching experience of topology, which students feel very hard because of its abstractness. For more efficiency, mathematics-clubs each consisting of three or four students in topology course are established. This makes students very positive in topology class.

• Environmental and Resource Economics Review
• /
• v.11 no.2
• /
• pp.279-290
• /
• 2002

This paper explores the impact of public financing for recycling firms on output, using a specific case study of Korea. To this end, we employ a production function approach and apply generalized method of moment estimation technique. The results show that the impact appears to be not only positive but also statistically significant, and more interestingly the estimate for financed capital is numerically larger than that for non-financed capital.

• Cross-Cultural Studies
• /
• v.24
• /
• pp.62-83
• /
• 2011

The totality of language learning comprises three integrated components: linguistic, cultural, and attitudinal (Wilkes, 1983).Positively sensitizing students to cultural phenomena is urgent and crucial. A positive attitude toward L2 culture is a factor in language learning that leads to cross cultural understanding. This research examined, through a survey analysis, how three groups of students (one high school group and two university student groups) viewed the role of their foreign culture (i.e., American and British cultures) in achieving cultural understanding. The focus was upon how EFL learners approach the target language culture as well as their own culture.

• Bulletin of the Korean Mathematical Society
• /
• v.61 no.2
• /
• pp.479-488
• /
• 2024

Convergence to a steady state in the long term limit is established for global weak solutions to a chemotaxis model with degenerate local sensing and consumption, when the motility function is C¹-smooth on [0, ∞), vanishes at zero, and is positive on (0, ∞). A condition excluding that the large time limit is spatially homogeneous is also provided. These results extend previous ones derived for motility functions vanishing algebraically at zero and rely on a completely different approach.

• Industry Promotion Research
• /
• v.9 no.2
• /
• pp.85-93
• /
• 2024

This study examines the direct effects of infant temperament, infant happiness, playfulness, and self-regulation and the mediating effect of playfulness and self-regulation in the relationship between infant temperament and infant happiness, and examines the relationship of influence on infant happiness according to infant temperament. The purpose is to provide theoretical and practical information for promotion. The main results of this study are as follows. First, the activity of infant temperament was found to have a positive effect on infant happiness. Second, the adaptability, activity, and approach-avoidance of children's temperament were found to have a positive effect on playability. Third, the physiological regularity of infant temperament was found to have a positive effect on self-regulation. Fourth, playfulness and self-regulation were found to have a positive effect on children's happiness. Fifth, playfulness was found to play a mediating role between infant temperament adaptability, activity, approach avoidance, and happiness. Sixth, self-regulation was found to play a mediating role between the physiological regularity of infant temperament and infant happiness. In conclusion, this study can improve children's happiness by analyzing the direct effects on children's happiness, playfulness, and self-regulation according to the sub-factors of children's temperament, and the indirect influence of the mediating variables, playability and self-regulation, on children's happiness. It is meaningful in providing theoretical and practical basic data for early childhood care and education by understanding what direction there is.

• Journal of Digital Convergence
• /
• v.19 no.9
• /
• pp.105-114
• /
• 2021

The paper investigates a mediating effect of job embeddedness in the influence of positive psychological capital on organizational citizenship behavior(OCB) for members of medical institutions. The members include medical doctors, nurses, medical technicians, health administrative staffs, and other medical service staffs of hospitals in Daejeon City, Chungcheongnam-do, Chungcheongbuk-do, and Sejong City. Using 453 questionnaires for hypothesis tests, the main results are as follows. Firstly, positive psychological capital exerts a significantly positive effect on OCB. Secondly, the fit and links of job embeddedness turn out to have a significant and positive effect on OCB, whereas the sacrifice does not have statistically significant effect on it. Thirdly, while the fit and links of job embeddedness appear to have mediating effects between positive psychological capital and OCB, the sacrifice of it does not exert a mediating effect. The findings thus suggest that we need a new approach to the role of job embeddedness in the positive impacts of positive psychological capital on OCB through the fit and links of job embeddedness. Furthermore, organizations need to focus on key elements in the application of job embeddedness.

• Journal of the Korea Society of Computer and Information
• /
• v.18 no.4
• /
• pp.201-211
• /
• 2013

The purpose of this study is to identify the educational effects of Whole language approach through ICT Education to see children with intellectual disorders's change after praticing this program. It's specially meant determine specially, It's impact on reading ability. by focusing reading comprehension. (comprehension of detail contents and memorizing of detail contents.) that is differences of other existing research. The subjects are 14-16 years old who are with intellectual disorders and This study utilized a single case. (1) Is there any effects of the whole language approach through ICT Education on comprehension of detail contents, (2) Is there any effects of the whole language approach through ICT Education on memorizing of detail contents. The result showed the following: First, the Whole language approach served to increased comprehension of detail contents of children with intellectual disorders. Second, the Whole language approach served to increased memorizing of detail contents of children with intellectual disorders. Third, the Whole language approach given to positive influence about maintenance that comprehension of detail contents and memorizing of detail contents of children with intellectual disorders.

• Journal of Korean Neurosurgical Society
• /
• v.63 no.5
• /
• pp.614-622
• /
• 2020

Objective : The method of approach during transforaminal endoscopic lumbar discectomy (TELD) has been the subject of repeated study. However, the ideal entry point during TELD has not been studied in detail. Therefore, this study investigated the ideal entry point for avoiding complications using computed tomography (CT) scans obtained from patients in the prone position. Methods : Using CT scans obtained from patients in the prone position, we checked for retroperitoneal or visceral violations and measured the angles of approach with five conventional approach lines drawn on axial CT scans at each disc space level (L2-3, L3-4, and L4-5). We also determined the ideal entry point distance and approach angles for avoiding retroperitoneal or visceral violations. Correlation analysis was performed to identify the patient characteristics related to the ideal entry point properties. Results : We found that the far lateral approach at the L2-3 level resulted in high rates of visceral violation. However, rates of visceral violation at the L3-4 and L4-5 levels were remarkably low or absent. The ideal angles of approach decreased moving caudally along the spine, and the ideal entry point distances increased moving caudally along the spine. Weight, body mass index (BMI), and the depth of the posterior vertebral line from the skin were positively associated with the distance of the ideal entry point from the midline. Conclusion : We reviewed the risk of the extreme lateral approach by analyzing rates of retroperitoneal and visceral violations during well-known methods of approach. We suggested an ideal entry point at each level of the lumbar spine and found a positive correlation between the distance of the entry point to the midline and patient characteristics such as BMI, weight, and the depth of the posterior vertebral line from the skin.