• KSII Transactions on Internet and Information Systems (TIIS)
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• v.16 no.9
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• pp.2976-2990
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• 2022

The adaptive adjustment of reference or weight vectors in decomposition-based methods has been a hot research topic in the evolutionary community over the past few years. Although various methods have been proposed regarding this issue, most of them aim to diversify solutions in the objective space to cover the true Pareto fronts as much as possible. Different from them, this paper proposes a knee point-based reference vector adaptive adjustment strategy to concurrently balance the convergence and diversity. To be specific, the knee point-based reference vector adaptive adjustment strategy firstly utilizes knee points to construct the adaptive reference vectors. After that, a new fitness function is defined mathematically. Then, this paper further designs a many-objective evolutionary algorithm with knee point-based reference vector adaptive adjustment strategy, where the mating operation and environmental selection are designed accordingly. The proposed method is extensively tested on the WFG test suite with 8, 10 and 12 objectives and MPDMP with state-of-the-art optimizers. Extensive experimental results demonstrate the superiority of the proposed method over state-of-the-art optimizers and the practicability of the proposed method in tackling practical many-objective optimization problems.

• Human Ecology Research
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• v.53 no.3
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• pp.331-339
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• 2015

This study investigates the effects of parental abuse and neglect on school life adjustment mediated by self-esteem in adolescents. Participants consisted of 2,259 middle school students from the Korean Children and Youth Panel Study 2012. Secondary questionnaire data on parental abuse and neglect, self-esteem, and school life adjustment are used for this study. Data were analyzed using descriptive analysis, Cronbach's a, Pearson's correlation analysis and multiple regression analysis. Baron and Kenny's method determined the mediation effect. SPSS ver 18.0 was adopted. The results were as follows. First, parental abuse and neglect were negatively correlated with the adolescent school life adjustment; however self-esteem was positively correlated with adolescent school life adjustment. Second, the results of the regression analysis revealed that adolescent school life adjustment was influenced both directly and indirectly; parental abuse had a direct effect on adolescents' school life adjustment and also had an indirect effect on mediated by self-esteem. Parental neglect had a direct effect on adolescent school life adjustment and had an indirect effect on adolescent school life adjustment mediated by self-esteem. The results indicated that self-esteem plays a crucial variable in the relationship of parental abuse and the school life adjustment. Also, self-esteem plays a crucial variable in the relationship between parental neglect and school life adjustment.

• Journal of Korean Academy of Nursing
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• v.32 no.5
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• pp.624-632
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• 2002

The number of residents in elderly institution has been increasing due to the change of the family support system. This study was focused on understanding the process of adjustment of the institutionalized elderly using the Grounded Theory approach. Method: There were seven participants, 4 men and 3 women living in 3 different elderly facilities. The data was collected through in-depth interviews and participant observation from June 20, 1999 to January 10, 2000 and analyzed by the Strauss and Corbin's analysis method. Result: 125 concepts were found and grouped into 30 sub-categories and then grouped into 13 categories. These categories are , , , , , , , , , , , and , which were synthesized into the process of adjustment. being the core category. The adjustment process of the facility elderly consisted of : 1. expressive phase of 'reluctance' 2. control phase of 'reluctance' 3. latent phase of 'reluctance' Conclusion: This study offers better understandings on the adjustment process of the institutionalized elderly and provides more appropriate nursing care to the New Comers of these facilities.

• Journal of Korean Clinical Health Science
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• v.5 no.4
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• pp.998-1008
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• 2017

Purpose. The effect of mentoring program on the adaptability of college students to occupational therapy freshmen. Method. Pre-post-test design was performed, and 20 experimental group were selected. Six students in the senior grade of occupational therapy, who can serve as a mentor to experimental groups, were selected from March 28, 2017 to April 26, 2017 conducted a mentoring program. They used BDI, SACQ, Interpersonal relation test. Result. The results of this study are as follows. The mentoring program was effective in improving the adaptation of college students to school life. It was found that the mentoring program was effective in major adjustment, social adjustment, personal-emotional adjustment and academic adjustment. Conclusion. The mentoring program had a significant effects on major adjustment, social adjustment, personal-emotional adjustment and academic adjustment in occupational therapy college freshman.

• Journal of Korean Academy of Nursing
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• v.34 no.3
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• pp.525-533
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• 2004

Purpose: The purpose of this study was to develop a program promoting adjustment to hospital life and determining its effectiveness for school aged children. Method: The sample group consisted of 76 hospitalized children in 2 University Hospitals located in Busan. The experimental group was given the program on admission and feedback was obtained on the 3rd day and again 24 hours later. Data was analyzed using t-test and ANOVA in the SPSS program package. Result: There were significant differences, in information(t=4.235, p=0.000) and coping effort criteria (t=2.922, p=0.005) between the experimental and control groups. There was a non-significant difference in attitude criteria between the two groups(t=1.009, p=0.316). Conclusion: It was found that the adjustment promoting program for hospital life for school aged children was effective, but not enough to promote self-esteem. The program, based on a learning theory, was improved and shown to be an effective and strong method to promote adjustment of school-aged children.

• Korean Journal of Construction Engineering and Management
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• v.12 no.4
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• pp.70-78
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• 2011

In case of long time progressive construction work, we need contract sum adjustment due to escalation for a period of works and the process of applying, consistent and obvious criterion is required. In this study, it were attempted to figure out problem and study this rational improvement by giving examples based on core activities of escalation adjustment. Based on literature study and legal system analysis, we classified processes of contract sum adjustment for escalation and defined 20 core activities for each process. From this measured variable, we carried out case study by giving 37 examples of escalation. As a result of case study, problems of each process was found and we suggested rational improvement. As this study, providers will be able to waste budget and the other will be given smooth escalation adjustment.

• Korean Journal of Construction Engineering and Management
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• v.20 no.3
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• pp.3-11
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• 2019

The construction of a facility is an act whereby infrastructure such as roads and railways and other facilities such as housing and office spaces are constructed, and due to the characteristics of the relevant industry where such construction is carried out in a custom order method, it requires a long period of time mostly. While the construction is carried out over a long period of time, fluctuations in the price of raw materials required for the construction occur. Therefore, the cost of the construction also fluctuates inevitably. The fluctuation of the construction cost meshes closely with the profit of a constructor and the efficiency of government spending. Therefore, it is necessary to maintain the construction cost at a reasonable level by adjusting the construction cost rationally in order to secure the required construction quality and spend the budget efficiently. The buffer system for solving such problem is the contract amount adjustment system by fluctuations in prices (Escalation/De-Escalation). In this study, the method combining the escalation method based on the item adjustment method was suggested for an efficient contract amount adjustment method. In addition, it is proposed that there be an investigation and codification of matters not applied to government acts and regulations on contracts related to the adjustment of fluctuations in prices legally.

• Journal of Welding and Joining
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• v.15 no.6
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• pp.66-77
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• 1997

In the present work, Taguchi method for electron beam welding(EBW) process in AISI 4130 steel plate has been adopted for investigating the contribution of effect of welding variables. $A L_8(2^7)$ orthogonal array is adopted to obtain the effect of adjustment parameters. The adjustment parameters consist of accelerating voltage, beam current, travel speed and focus currrent. And the quality features selected for the EBW process are bead width of weldment, reinforcement, penetration depth, undercut and area of weld metal. Variance analysis is performed in order to check the effect of adjustment parameters on EBW. The mechanical properties of electron beam welded joints for each heat treatment conditions are investigated in comparison with those of base metal, especially from the view point of tensile and impact properties.

• Proceedings of the Korean Association for Survey Research Conference
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• 2003.06a
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• pp.19-28
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• 2003

Weighting adjustment is a method of improving the efficiency of the estimator by incorporating auxiliary variables at the estimation stage. One commonly used method of weighting adjustment is the poststratification, which is a special case of regression estimation but is relatively feasible in terms of actual implementation. If too many auxiliary variables are used in the poststratification, the bias of the resulting point estimator is no longer negligible and the final weights may have extreme weights. In this study, we propose a method of weight ing adjustment that compromises the efficiency and the bias of the point estimator. A limited simulation study is also presented.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.11 no.2
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• pp.1-5
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• 1993

This paper dealt with the theoretical adjustment of the closed nets with the various links by weight of the observed angles and distances. In addition to the results of checking between this theoretical adjustment method, the compass rule and transit rule, the theoretical adjustment method is more accurate than other adjustments.