Radish is one of the major vegetable crops and has been damaged economically by the causal agent of Fusarium wilt disease, Fusarium oxysporum f. sp. raphani (FO) in the highlands of Gangwon province, Korea. Recently, clover cyst nematode, Heterodera trifolii(HT), occurred in highland of Jeongseon area and poses a threat to radish plants. The nematodes, besides causing direct damage to radish plants, possess the capability to synergize with other plant pathogens, leading to the development of a disease complex. The aim of this study was to investigate the interaction between FO and HT in radish plants. The length of plants co-infected with both FO and HT was shorter than that of plants infected with FO alone, but there was no statistically significant difference. However, the disease severity was much higher in the plants co-infected with both FO and HT(1.60±0.97) compared to FO alone(0.20±0.42)(df=3, F=10.17, p<0.001). Disease incidence was also about two-fold higher in plants co-infected with both FO and HT (80%) compared to FO alone (44%). These results suggested that the clover cyst nematode should be considered in the management of Fusarium wilt disease in the highlands of Gangwon province.
The purpose of this study is to deeply explore the communication process with team members perceived by team leader. To this end, in-depth interviews were conducted with 10 team leaders, and analyzed according to the grounded theory research method procedure suggested by Strauss and Corbin. As a results, a total of 51 concepts, 17 subcategories, and 8 categories were derived. As a causal condition, the concept of 'contemplating and reinterpreting communication necessary for the organization' was derived, and the central phenomenon was 'intentional effort made in parallel with work and private conversations'. The contextual condition was 'recognizing the need to cope with environmental changes', and the mediating condition was 'self-reflection and self-coaching time' was derived. The action/interaction strategy was conceptualized as a communication process with task-oriented coping, conflict resolution coping, and relationship promotion coping, and was confirmed as 'recognizing virtuous cycle communication within the organization' as a result of interaction with the central phenomenon. As a result of analysis of the team leader's communication process, the effort stage, approach stage, coping stage, and cycle stage were shown. As a result of the type analysis, task-oriented coping was a facilitator, conflict resolution coping was a supporter, and relationship promotion coping was a considerate. This study is an empirical study on how the corporate team leader perceives and expresses communication in the relationship with the team members.
Service innovation is one means of gaining an advantage in a highly competitive environment. Although numerous studies have stressed the importance of service innovation, traditional good-dominant logic is still used in service innovation literature. Furthermore, few studies have been conducted on the link between service innovation and its antecedents in terms of service-oriented approach. To fill the gap, this article theoretically and empirically examines service innovation and its antecedents and consequences. Based on service-dominant logic and resource advantage theory, the current study aims to understand the effect of antecedents on service innovation as well as to identify the effect of service innovation on firm performance (i.e., non-financial and financial performance). Three service innovation activities, namely service creation-focused innovation, service delivery-focused innovation, and customer interaction-focused innovation, and four antecedents of service innovation, including human resource management capability, collaboration capability, marketing capability, and information technology capability, are identified based on Den Hertog (2000)'s service innovation framework. By using the empirical data collected from 189 service firms in Korea, this study explores the causal relationship among antecedents, service innovation and firm performance. Findings indicate that human resource management and marketing capabilities influence the three types of service innovation, whereas collaboration and information technology capabilities have a significant effect on both service creation-focused innovation and service delivery-focused innovation. In particular, human resource management capability is strongly related to customer interaction-focused innovation. The three types of service innovation have a positive influence on non-financial performance, whereas service delivery-focused innovation and customer interaction-focused innovation positively influence financial performance. These results support the crucial effects of antecedents, such as human resource management, collaboration, marketing and information technology capabilities, on service innovation.
Journal of the Korean Society of Earth Science Education
/
v.10
no.3
/
pp.308-322
/
2017
It is the purpose of the study to investigate how high school students understand the concept of carbon cycle according to their spatial perception ability. For this, a total of 30 male students and 33 female students, who belong to the science course of the 2nd grade at a general co-education high school located in a megalopolis of Korea and have finished the class of Earth Science I in the first semester, took part in the spatial perception ability test, and four male students and four female students were selected as members of two groups : one group of higher spatial perception ability and the other group of lower spatial perception ability, and they agreed to participate in the study and have got the test of the carbon cycle concept. The results are as followings. It was found that the students who had higher spatial perception ability recorded more scores in the carbon cycle concept, state change concept, and process concept at the factor of word association and the carbon cycle concept, state change and process concept at the factor of drawing than those who had lower spatial perception ability. Connecting link used in the systemic viewpoint was disclosed like this in the factor of causal map of those who had higher spatial perception ability : one student 2 and another one student 1 and the other two students 0 : and in the factor of drawing three students 1 and the other 0 ; But nothing was found in the factors of causal map and drawing of those who had lower spatial perception ability. In addition, it was also found that those students who had higher spatial perception ability, when compared with those students who had lower spatial perception ability, have understood the fact that carbon moves through the interaction of the earth system's lower parts; Three students, who showed higher spatial perception ability, had a low level of systemic thinking concept, and one student who had higher spatial perception ability and four students who had lower spatial perception ability did not have a systemic thinking concept.
The purpose of this study was to examine the association between oral health status and rheumatoid arthritis (RA). The study used a nationally representative sample of Koreans (2013 Korea National Health and Nutrition Examination Survey) aged 19 years over (n=6,113). Dependent variable was RA, which was assessed with oral health status. Independent variable was oral health status (periodontal status, missing tooth). The chi-square test and logistic regression analysis were performed to identify the association between oral health status and RA. Results of logistic regression analysis for association between periodontal status and RA was no significant. Results of logistic regression analysis for association between missing tooth and RA was statistically significant. The odds ratio (OR) for RA participants was 3.03 (95% confidence interval [CI], 1.47~6.23) in missing tooth 19~28 than missing tooth 0~8. The OR for RA participants was 2.08 (95% CI, 1.06~4.08) in missing tooth 9~18 than missing tooth 0~8. After adjustment for confounders (socio-demographic factors, health behaviors), results of logistic regression analysis was no significant. More missing tooth among adults was greater the risk of RA. By promoting the improvement of oral hygiene and oral health would contribute to reduce the risks associated with systemic diseases. Future study is needed to examine the detailed causal relations between oral health status and RA bidirectionally.
Using grounded theory method, this study analyzed the in-depth interviews with 11 parents of institutionalized children in order to find out how the experience of the parents on the process of the children's family reunification. According to the results, it was 'leaving one's child' that composed causal conditions, and also it was 'sentenced life' and 'adapting to a life without child' that composed existing conditions. Thus, the contextual condition was found out as 'a belief of family' and 'a belief of child caring' and the mediation conditions were 'power to recover' and 'not being as one's intentions'. Also, reaction/interaction strategies turned out as 'preparing a basis of child-care', 'playing a parent', 'standing against being adapted' and 'adjusting as their children back to family'. Finally, the analysis showed 'burdens on caring', 'wanting to leave one' child again', 'having stronger family membership' and 'being hopeful in a future' as results. The specific levels of the process were found out as following 4 steps, as time goes by. 1)Fostering children at institutions: become harsh parents(or a harsh parent), 2)After fostering: rebuild collapsed family in order to take the children back, 3)Family reunification: become aboveboard to oneself, family and the world, 4)After family reunification: try to keep the family taking precautions against resending. While taking their children back, the parents turned out to experience long, unremitting tension. Reflecting results of the analysis above, and in order to promote sending institutionalized children back to their families this article suggests practical alternatives for parents who left their children in institutions.
The main purpose of this study is to conceptualize and investigate the relationship between customer satisfaction and the linking variables of customer loyalty in internet shopping mall including general merchandise and specialized online mall. To achieve this objective, the study tries to validate the structural equation model and causal relationships among the model's elements involving customer satisfaction, customer trust, customer attitude, relationship involvement, and customer loyalty. The same research model was used in analysing general merchandise and specialized internet shopping mall to reveal and compare the casual path constructs. Empirical findings are as follows: First, all the hypothesis concerned with internet merchandise shopping mall were accepted but the direct effects between satisfaction $\Rightarrow$ loyalty and satisfaction $\Rightarrow$ attitude rejected in case of specialized internet shopping mall. Second, I found out that there were direct or indirect relationships between the mediating variables(satisfaction, attitude, involvement) and site trust and customer loyalty irrespective of internet shopping site patterns. In Particular, the direct effects of on customer loyalty showed the difference each other, but the indirect effects through satisfaction, attitude, or relationship involvement were all accepted. This means that the proper management concerned with indirect path is probably more important for the success of all kinds of internet shopping mall. The implications of this research may be summarized as follows. First, click and mortar companies should clearly understand and articulate the key requirements of shopping mall trust and satisfaction. Second, online companies are encouraged to establish linkage including trust, positive attitude, relationship involvement in order to foster customer loyalty. Third, companies are not only required to differentiate the internet marketing strategy adapting to the patterns of internet shopping mall but also to customize the interaction strategy in the formation process of customer loyalty.
This research is to find structural relationships among psychological anxiety, appearance-oriented attitude, and self-esteem of youth and investigates how the structural relationships show by genders and different school classes. For the investigation, a collected data for the research of 'adolescent's misbehaviors and tendency of their young average age and political subject' were used from SPSS 22.0 program and AMOS 22 statistical program provided by Korea youth and children's data archive. First of all, the research determines as the psychological anxiety gets higher, youth have lower self-esteem level and more behavior problems. In addition, when adolescents show stronger appearance-oriented attitude they have higher self-esteem level and more behavior problem. The study also indicates that as youths have higher self-esteem their behavior problem levels are reduced. Secondly, by examining the relationships of youth's psychological anxiety and appearance-oriented attitude based on their self-esteem, the self-esteem gives a positive mediated effect on psychological anxiety and behavior problem whereas the self-esteem affects as negative mediated effect on the appearance-oriented attitude and behavior problem. Lastly, the study indicates there is a causal interaction between youth's appearance-oriented attitude and behavior problem which differs by genders and different school classes. Based on the results of the research, the theoretical and practical applications were suggested to prevent and relax the adolescent's behavior problems.
This study aims to confirm the effect of different types of interpersonal stress factors of private security officers that are prevalent in the course of carrying out their duties on job satisfaction and turnover intention. The authors have examined 175 of the 200 survey questionnaires distributed to the employees of private security firms located in Seoul and Gyeonggi Province in December 2012. The result of the analysis indicates that the primary source of stress in the private security officers is the interaction with customers, followed by the relationships with colleagues and superior officers. In addition, colleague-related stress is found to be the only interpersonal stress factor with a statistically significant negative effect on job satisfaction, while both the stress from the relationships with colleagues and superior officers are positively correlated with turnover intention. Furthermore, the colleague-related stress is revealed to mediate job satisfaction which has a statistically significant effect on turnover intention. The result from the study emphasizes the importance of managing the interpersonal stress in private security officers and confirms the necessity of effectively handling the stressful situations in the relationships with colleagues. Moreover, in order to raise job satisfaction levels and minimize turnover which is vital in accomplishing the goal of each organization, causal factors of the stress need to be recognized and handled appropriately. This will provide the future research with an insight into the effective interpersonal stress management and examining other factors of job satisfaction and turnover intention of private security officers.
The purpose of this study is to investigate the relationships among customer satisfaction, trust, and loyalty and examine the differences and similarities between specialized and general merchandise internet shopping malls concerning the relationships of these key success factors. The structural model is tested with each of the sub-samples(i.e., specialized and general merchandise shopping customers taken separately) and the data from entire data samples(i.e., specialized and general merchandise shopping customers pooled together). The same research model was used in analysing general merchandise, specialized, and integrated internet shopping mall to reveal and compare the casual path constructs. In the analysis of path coefficients composed of separated taken sample, all research hypothesis is accepted and the model's goodness of fit also shows all high. In the basis of the previous empirical test, multiple sample method was used. Properties of the causal paths, including standardized path coefficients, the significance of difference, latent correlations and variance explained for satisfaction, trust and loyalty in the hypothesized model, have similarities in general. This means that the proper structural management concerned with customer satisfaction, trust and loyalty is very crucial for the success of all kinds of internet shopping malls. Following the model test, I conduct a test of integrated model's path coefficients. Statistical results show that all the hypothesis concerned with internet shopping malls were accepted like the separated sample test. Click and mortar companies should clearly understand and articulate the key requirements of shopping mall satisfaction, trust and loyalty and encourage to establish linkage and interactive relationship among the research variables. In addition, internet marketers are required to customize the interaction considering and adapting the patterns of internet shopping malls. Other interesting results concerning the strategies in internet shopping malls strategy are also presented.
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