• Korean System Dynamics Review
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• v.5 no.1
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• pp.73-97
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• 2004

This paper explores the relationship between technological characteristics within process innovation and selection of the firms of different organizational forms in the evolution of an industry. For this purpose, this paper develops a simulation model for industrial change that replicates dynamic competition for process innovation. The simulation analysis found the following causal relationship. First, the stronger innovation impact in terms of productivity jump tends to enlarge the productivity difference among the incumbent firms and increase the speed of productivity catch-up by the large diversified firms, Second, the possibility of entry, and eventual dominance by the large diversified firms increase when the innovation-productivity linkage is stronger and there is less cumulativeness in productivity determination. These results imply that technological characteristics are important factors that have influence on whether or not the large diversified firms can enter and succeed in an industry.

• Journal of Korean Public Health Nursing
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• v.29 no.2
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• pp.354-364
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• 2015

Purpose: This study was conducted to determine factors related to self-esteem, personality, general characteristics and dating affecting positive affect in female college students. Methods: The subjects were 335 female students attending the three colleges in Chungnam Province. Data were collected using PANAS, Self-esteem, and DISC questionnaires. Hierarchical Multiple Regression Analysis was mainly used. Results: The factors affecting positive affect were self-esteem, personality-dominance type, personality -consciousness type, economic status and boyfriend presence in female college students. These 5 factors accounted for 30.3% of positive affect of female students. In cases of having a boyfriend, factors affecting positive affect were self-esteem, economic status, boyfriend's height, and boyfriend's economic status. These 4 factors accounted for 30.5% of positive affect of female students who have a boyfriend. Conclusion: The positive affect levels of female students should be raised in practice through intervention such as a self-esteem improvement program, personality traits intervention program, and counseling on dating.

• Journal of Technology Innovation
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• v.6 no.2
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• pp.178-207
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• 1998

This article suggests a methodology to decide the priority of investment project for venture business under the dynamic circumstance. By the Monte Carlo procedure on the probability distribution of cost and revenue, the model simulates the investment project to estimate profit ratio and risk. The profit ratio is calculated on the yearly basis for the relative comparison. The project risk is calculated as semi-variance under the target yield. After sufficient simulations in this fashion for several projects, the efficient projects with more profit and less risk are selected by the dominance principle. Then the regression equation of the selected projects is produced to find the relative value of the projects. The relative value is obtained through dividing the raw profit ratio by the estimated one on the equation. This value shows the degree to which the simulated project yields over the equation. The priority of investment is decided by this value. An examplary venture business of chemical development for semi-conductor is presented as a case study.

• Journal of the Korean Society of Clothing and Textiles
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• v.8 no.1
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• pp.13-19
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• 1984

The purpose of this study was to investigate the relationship between three aspects of clothing behavior ana three personality traits. Personality traits were measured with Chung's Personality Scale. 1 The questionnaire measuring clothing behavior consisted of items designed to assess clothing conformity, importance, and self-concept regarding clothing, This questionnaire was composed of items designed for this study in addition to items selected from questionnaires of such researchers as Sin, Lee, Chung, creekmore, Cheek, and Kim. These questionnaires were administered to 323 high school girls in Seoul. Statistical analysis consisted of correlation and t-test. The results were : 1) Dominance was positively related to self-concept regarding clothing and negatively related to clothing conformity. 2) Emotional stability was positively related to clothing modesty. 3) Sociability was positively related to self-concept regarding clothing. 4) There was no significant difference in clothing behavior between early adolescents and late adolescents.

• Journal of Institute of Control, Robotics and Systems
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• v.11 no.2
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• pp.93-102
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• 2005

The Nyquist robust stability margin is proposed as a measure of robust stability for systems with Affine TFM(Transfer Function Matrix) parametric uncertainty. The parametric uncertainty is modeled through a Affine TFM MIMO (Multi-Input Multi-Output) description with dead-time, and the unstructured uncertainty through a bounded perturbation of Affine polynomials. Gershgorin's theorem and concepts of diagonal dominance and GB(Gershgorin Bands) are extended to include model uncertainty. Multiloop PI/PID controllers can be tuned by using a modified version of the Ziegler-Nichols (ZN) relations. Consequently, this paper provides sufficient conditions for the robustness of Affine TFM MIMO uncertain systems with dead-time based on Rosenbrock's DNA. Simulation examples show the performance and efficiency of the proposed multiloop design method for Affine uncertain systems with dead-time.

• Bulletin of the Korean Chemical Society
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• v.4 no.2
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• pp.84-87
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• 1983

Transition state structures were calculated for A and M routes of ${\omega}$-alkenyl radical cyclization (n = 2∼4) using MINDO/3-RHF method. Results of our analysis of HOMO level changes indicated that the transition state stability is not controlled by the decoupling effect alone as Bischof suggested, but in greater degree it is determined by through-bond interaction of the HOMOs with the framework $HO-{\sigma}$ or $LU-{\sigma}^*$ orbitals. In case of larger n (n > 4), the product stability was considered to be the main cause of M route dominance in the cyclization.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.14 no.23
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• pp.19-25
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• 1991

In this paper, constrained resource project scheduling problems schedule project activities subject to finite constraints on the availability of non-storable resource. Further, resources are assumed to be available per period in constant amounts, and are also demanded by an activity in constant amounts throughout the duration of the activity. We describe formulation which minimizes the combined cost of fluctuations in resource demand and delay of project completion. Cost bounding procedures are augmented by dominance relationships presented as theorems. This paper presents algorithm for solving the problem. And numerical examples are presented. Sensitivity analysis to evaluate the effect of changes of cost efficients is conducted.

• The Journal of Fisheries Business Administration
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• v.53 no.1
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• pp.17-53
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• 2022

This study investigated the initial capital trend of newly-established fisheries companies during the Japanese occupation period. The initial capital size of fisheries companies provides information about the viability of the fisheries companies as well as the utilization intensity of fisheries resources. According to the analysis results, the average initial capital size of fisheries companies was larger in the enforcement period of "Chosun Company Ordinance" than in its abolition period. The initial capital size of the Chosun-capital fisheries company was smaller than that of the Japanese-capital fisheries company during the Japanese occupation period. The number of new fisheries companies funded by Chosun capital was less than the number of new fisheries companies funded by Japanese capital. Therefore, it could be seen that the Japanese fisheries companies had stronger dominance in the fisheries sector than the Chosun fisheries companies during the Japanese occupation period, and that Japanese fisheries companies were more viable than Chosun fisheries companies.

• Journal of Plant Biology
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• v.32 no.2
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• pp.109-119
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• 1989

Adhatoda vasica Nees is a shrubby component of tropical and subtropical vegetation in Pakistan. t harbours relatively few unhealthy associated species in and around its thickets. Aqueous extracts, rain leachates, litter from shoots and soil underneath it invariably reduced germination, early growth, biomass, moisture and chlorophyll contents of Pennisetum americanum, Setaria italica, Zea mays, Brassica campestris and Triticum vulgare in different laboratory expreiments. chromatographic analysis revealed the presence of caffeic, ferulic, vanillic, p-coumaric, p-OH-benzoic, and tannic acids in aqueous extracts. The phytotoxicity was related to the test species used, part assayed and parameter measured. It is suggested that the preclusion of the associated species and the dominance of A. vasica is primarily due to allelopathy. Negative grazing also provides better chances for its establishment.

• Asian Journal of Innovation and Policy
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• v.12 no.3
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• pp.345-362
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• 2023

As the widespread adoption and proliferation of electric vehicles continue, the secondary battery market is experiencing rapid growth. However, lithium-ion batteries, which constitute a majority of secondary batteries, present high risks of fire and explosion. Solid-state batteries are thus garnering attention as the next-generation batteries since they eliminate fire hazards and significantly reduce the risk of explosions. Against this background, the study aimed to analyze research trends and provide insights by examining 2,927 domestic papers related to solid-state batteries over the past decade (2013-2022). Specifically, we used topic modeling to extract major keywords associated with solid-state batteries research and to explore the network characteristics across major topics. The changes in research on solid-state batteries were analyzed in-depth by calculating topic dominance by year. The findings provide an overview of the emerging trends in domestic solid-state battery research, and might serve as a valuable reference in shaping long-term research directions.