• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.667-677
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• 2022

The purpose of this study is to analyze the structural relationship among the usefulness, ease of use, use intention, and learning utilization of smart learning devices recognized by college students. In order to achieve this, the following problems were addressed: first, how do college students' recognition of ease and usefulness of smart learning devices? second, how do college students' recognition of ease and learning utilization? third, what mediating effects od use of smart learning devices and learning utilization? As for the research method, a survey of 350 students who participated in smart learning was conducted to conduct a home review, confirmatory factor analysis, and bootsrapping for structural equation estimation and mediating analysis. As a result of the analysis on this, first, it was found that the usefulness and ease of smart learning devices recognized by college students had an effect on the intention of use. Second, it was found that the perception of the usefulness and ease of smart devices perceived by college students had an effect on the use of smart learning device learning. Third, it was found that the intention to use smart devices perceived by college students mediated the relationship between usefulness and learning utilization, and it was found that it mediated the relationship between ease and learning utilization. The implications are that instructors can recognize and utilize the intention of using smart learning devices properly by allowing college students to recognize the usefulness and ease of using smart learning devices in the classroom, thereby increasing the learning utilization of smart learning devices in class. In addition, efforts are needed to enable college students to recognize the usefulness of smart devices and to expand the use of learning.

• Journal of Information Technology Services
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• v.13 no.1
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• pp.43-55
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• 2014

More and more people are gravitating to reading products reviews prior to making purchasing decisions. As a number of reviews that vary in usefulness are posted every day, much attention is being paid to measuring their helpfulness. The goal of this paper is to investigate firstly various determinants of the helpfulness of reviews, and intends to examine the moderating effect of product type, i.e., search or experience goods on the product sales, helpfulness and helpfulness votes of online reviews. The determinants include product data, review characteristics, and textual characteristics of reviews. The results indicate that the direct effect exists for the determinants of product sales, helpfulness, and helpfulness votes. Further, the moderating effects of product type exist for these determinants on three dependent variables. The results of study will identify helpful online review and design review sites effectively.

• Journal of Korean Academy of Nursing
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• v.19 no.2
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• pp.173-190
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• 1989

This literature review was undertaken to explore theoretical models of depression for their potential usefulness in nursing research and practice. Depression has bean accounted for by numerous theories or models of causation ; 11 theories selected from psychology, medicine and psychoanalysis and supported by empirical or experimental research were reviewed. These theories identify a variety of precipitating and predisposing factors that may affect the individual's depression. Aggression - turned - inward theory, object loss theory, ego functioning theory, personality organization theory, behavioral theory, learned helplessness theory, cognitive theory, genetic factors, and biological theories conceptualize predisposing factors. Only life stressors theory identifies precipitating facotrs. Each of these theories contributes to an understanding of depression, but many of them use overlapping and interrelated factors. It is also evident from recent. research that there are multiple causes for depression involving an interactive effect among predisposing and precipitating factors that are both biological and psychological in origin. That is, a single theory is not useful, but perhaps a unified theory could be developed that would be helpful to nursing. This review points to the need for continuing development and testing of theories that would integrate the multiple conceptualizations of depression.

• The Journal of Korean Medicine
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• v.29 no.1
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• pp.7-14
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• 2008

Purpose : The purpose of study was to develop generalized validity evaluation methods and terms for Sasang type diagnostic tests. Methods : A generalized statistical evaluation model for Sasang typology was suggested and generalized validity evaluation indices were proposed with this model. Results : The usefulness of validity evaluations, such as sensitivity and specificity values, were confirmed by the systematic review of the data from previously reported studies. Conclusion :Major obstacles in the multi-facet analysis and systematic review for Sasang type diagnostic tests were discussed with this test validity study.

• Korean Management Science Review
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• v.12 no.2
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• pp.43-62
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• 1995

For a complex scheduling system like time table construction, its optimal solution, if exists, is hard to obtain. In this paper, the scheduling environment is reasonably confined as where objects have their own events competing for better slots on boards, and objects have their own board slot preferences and belong to one or more classes of the society which globally constrains them. Here, two phase method is suggested, where the first phase is human-like preference driven and the second phase is for fine tuning by considering all the factors given. Designed and implemented in our system HI-SCHED are dynamic object switching, temporal-constraint-driven intelligent backtracking, case-based revisions, object-based approach, and so on. Some satisfaction degrees are also defined to measure the usefulness of our method. In addition, look-ahead dynamic object switching is considered, and additional global constraints are introduced and processed. A simple scheme is also used to verify the usefulness of the post processing scheme.

• Korean System Dynamics Review
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• v.1 no.1
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• pp.57-79
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• 2000

Most model constructs in organization studies are descriptive in nature, and the conclusions relating to the model behavior over time are speculative. The usefulness of System Dynamics as a methodology for modeling and testing dynamic behavioral hypotheses in organizational behavioral studies is presented, and how to construct a System Dynamics model using simulation software(VENSIM) is shown, The well-know March and Simon motivation model is used to demonstrate the step by step application of System Dynamics to model of this type. The dynamic behavior of the model, both transient and steady state, is obtained, Even though the paper has focused on one model in the area of individual behavior, the approach is general and can be applied to other areas of organizational behavior as will. The usefulness of System Dynamics as a methodology for theory building is identified as well.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.31 no.2
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• pp.122-131
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• 2008

The purpose of this study is to find out the factors of customer satisfaction as the critical success factors of mobile banking. Based on previous exploratory work and a review of the literature of customer satisfaction, nine key factors are identified: perceived usefulness, perceived easy of use, perceived ubiquity, perceived safety, perceived tangibles, perceived reliability, perceived responsiveness, perceived assurance, and perceived empathy. A conceptual model is developed and hypotheses are empirically examined using multiple regression analysis. The result of this research are summarized as follows: First, perceived usefulness, perceived easy of use, perceived safety, and perceived empathy have significant influence on customer satisfaction. Second, customer satisfaction has significant influence on reuse intention and word-of-mouth intention.

• 한국디지털정책학회:학술대회논문집
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• 2005.11a
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• pp.499-507
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• 2005

This study first tries to investigate factors that decide the quality of mobile contents with literature review from the previous studies. Second, we hope to establish and verify the research model, which shows the relationship among quality of mobile contents, the perceived usefulness, and the competent degree of expected value or not. Third, on the basis of research results, this study can suggest the advices and implications for activating mobile contents industry. Therefore, we believe that research results can provide basic guideline for measuring the quality of mobile contents. Also, mobile contents service providers who are preparing or on going can get the insight which factors should be considered to activate the quality of contents service.

• The Journal of Korean Orthopaedic Ultrasound Society
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• v.3 no.2
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• pp.84-90
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• 2010

The use of sonography is easy in the foot and ankle region due to the subcutaneous location of most structures. The sonography can be helpful for differential diagnosis of many foot and ankle disease. This review tried to describe the usefulness of the sonography for the common foot and ankle diseases.

• International Commerce and Information Review
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• v.9 no.3
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• pp.233-254
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• 2007

According to the empirical study, the research model has been verified about the introduction of new ubiquitous technology into the Customs Information System. The research model is meaningful in deducing policy for accepting the new ubiquitous technology into the Customs Information System. The organization style is not yet positively accomplished, because of insufficient recognition about the new ubiquitous instrument. The other side the individual style, environmental style and working characteristics are contribute to accept the new ubiquitous environment, because of sufficient of education, usage and recognizing the usefulness of the portal information. It is established the Customs Information System with new ubiquitous technology such as RFID, DM, UCR etc.. for the usefulness and convenience.