The purpose of this study is to examine the relationship between organizational citizeship behavior and justice perceptions. The empirical results have indicated that the justice factors affect on the organizational citizenship behavior. Implications and limitations are discussed.

Multicast is a network technology for the delivery of information to a group of destinations simultaneously using the most efficient strategy to deliver the messages over each link of the network only once, creating copies only when the links to the multiple destinations split. This thesis designed a group certificate that can authenticate group information safety between cores based on CBT, proposed a multicast security system that can control some security key.

The purpose of this study was to analysis to jobs inducing the Musculoskeletal Disorders(MD) and improve the working environment. The case study was conducted at S company where makes radiator case of heavy profile equipment. Most of works are plating and welding. Bending and welding are works which induce MD. The adjustable workstation and fatigue prevention mat were recommended for the welding and bending. A standing posture was recommended for the welding.

This research is aimed at grouping for the extent to which the workers' job satisfaction influences productivity with a view to improving theirs, shedding light on the difference between the workers' concepts of job satisfaction and those of the executives of the matter in terms of the statistic characteristics of individuals and coming up with efficient measures to put the Korean tax accounting offices into smooth operation. The paper is suggesting a total of eight hypotheses, and the researcher tested those with the help of difference analyses and a regression analysis. The findings reveal that there was a difference in productivity in accordance with academic background, positions and total number years of work, etc. but tat there was no difference in gender. And superiors and pay among the factors of job satisfaction influenced productivity, whereas promotion and coworkers didn't. The worker subjects and the executive subjects turned out to differ in terms of pay levels, the welfare of the works, and the level of their ability to carry out their business in regard to the actual situation of tax accounting offices in Korea.

Many The purpose of this paper is to revisit the existence of monthly effect in the Korea Stock Market. We conducted additory test about KOSPI200 from January 1990 to December 2002 and about KOSDAQ from January 2002 to December 2006. The other main focus is examine Size Effect in Korean Stock Market. We also indicate Information hypothesis throught our findig. Data used in this paper are monthly returns of KOSPI and KOSDAQ from 1980 to 2006. As a result, Evidence is provided that monthly abnormal returns in January have large means relative to the remaining eleven months. The relation between abnormal returns and size is always negative and more pronounced in January than in any other month-even in years. More than fifty percent of the January premium is attributable to large abnormal returns during the first week of trading in the year particularly on the first trading day. This finding is highly significant in the mall sized capital stock of KOSPI market. We found January effect and Size Effect in the KOSPI market, but we didn't find January effect and Size Effect in the KOSDAQ market and KOSPI200.

The purpose of this study was to investigate the influence of Perceived Organizational Support(POS) and on Organizational Citizenship Behavior through Organizational Commitment(OC). In order to attain the objectives of this study, a model was established and hypothesis was verified on the basis of preceding studies. In a model proposed for this study, POS was used as antecedents to OC while OCB was used as consequences for OC. The sample included 387 employees. Structural equation modeling(SEM) was used to employed the hypothesized relationships in the conceptual model. Results indicated that (a)POS has a positive impact OC; (b)affective OC has a positive impact OCB; (c)continuance OC has a negative(or zero) impact QCB. Implications are discussed and future research directions are outlined.