• Structural Engineering and Mechanics
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• 제70권6호
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• pp.751-763
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• 2019

Steel-concrete composition is widely used in the construction due to efficient utilization of materials. The service load behavior of composite structures is significantly affected by cracking, creep and shrinkage effects in concrete. In order to control these effects in concrete slab, an efficient and novel strategy has been proposed by use of fiber reinforced concrete near interior supports of a continuous beam. Numerical study is carried out for the control of cracking, creep and shrinkage effects in composite beams subjected to service load. A five span continuous composite beam has been analyzed for different lengths of fiber reinforced concrete near the interior supports. For this purpose, the hybrid analytical-numerical procedure, developed by the authors, for service load analysis of composite structures has been further improved and generalized to make it applicable for composite beams having spans with different material properties along the length. It is shown that by providing fiber reinforced concrete even in small length near the supports; there can be a significant reduction in cracking as well as in deflections. It is also observed that the benefits achieved by providing fiber reinforced concrete over entire span are not significantly more as compared to the use of fiber reinforced concrete in certain length of beam near the interior supports in continuous composite beams.

• International Journal of Contents
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• 제15권2호
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• pp.44-52
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• 2019

This paper uses Delphi Method and statistics provided by the State Administration of Market Regulation of China, attempts to develop the scale index of language service industry in China. Coupled with practical investigation and theoretical framework of SCP paradigm, a deep analysis on market behavior, market structure, and market performance of the industry have been explored. First, the study indicates that the scale index of Chinese language services industry has experienced an upward trend from 10.481million RMB in 2008 to 351.403 million RMB in 2017. Second, majority of language services enterprises are situated in Chinese coastal provinces and there are variations in demand for language services. Third, the standardization of language services are minimal while most of the talents involve a single discipline background. Fourth, most enterprises utilize language tools while there is lack of technological innovation for utilization of language resources and enhancement of service quality. The author mainly suggests four strategies which include: cultivating multilingual services, strengthening the development of industrial informatization and technical innovation, and optimizing the industrial talents structure while also adjusting for industrial distribution and regional coordination, which propose the meaningful implications for the development of language service industry in China.

• 수산해양교육연구
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• 제24권4호
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• pp.543-558
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• 2012

This is a qualitative study of pre-service teachers' experiences in a teaching practicum course which attempted to identify the characteristics of the course that has been recently revised as professional education course. Data were collected from college students who took the professional education courses including the teaching practicum course by using both a survey on the opinions and suggestions of the students on the teaching practicum and a in-depth interview with 12 students of them. The results are as follows. First, pre-service teachers' perception of a teaching practicum course was divided into two sides : functional side and sociocultural side. The formal is that the professional education courses significantly handed to discipline practical jobs related to educational administration. The latter is that the professional education courses significantly handed to deal for teachers like pay step, extra pay, vacation, and leave of absence. Second, the pre-service teachers had suggestions that were divided into the 'curriculum content' and the 'instructional method'. For instance, regarding the 'curriculum content' they suggested such things needed as 'lessening and differentiation of content, sensitive about the scene, and lesson hands-on', and as for the 'instructional method' they suggested such things needed as actively 'doing, participating, assessing, coursework participating'. Based on these results, I have comprehended the pre-service teachers' positive response. Untill now, we have perceived that the professional education courses is excessively theory-oriented one. But a teaching practicum course is different. Meanwhile, It is not identify what the teaching practicum course as teaching refinement education course is. Due to this cause, I have comprehended that 'curriculum content' and the 'instructional method' is plunged in confusion. As pointed out this, I did concrete proposals in response to such a confusion. This proposals have helped decided on a direction of a teaching practicum course.

• 한국사회복지학
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• 제43권
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• pp.131-156
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• 2000

It is recognized that one of the major issues in jail management is responding to the needs of a growing number of inmates with mental health problems. The purpose of this study was to assess the nature and severity of mental health problems among inmate population. The mental health status of 1,500 (1,337 responded) inmates of the 30 prisons located in nationwide area was examined using Minnesota Multiphasic Personality Inventory (MMPI). And the scores on MMPI were examined in relation to some offender characteristics such as type of offence, treatment classification, frequence of discipline. The result indicates that the percentage of inmate population with scores over 70 on every sub-categories of the scale is higher than that of general populations reflecting high rate of deviation from average normal mental health. It seems likely that many of inmates are in need of specific mental health treatment services. The nature and severity of mental health problems varies depending on offender characteristics above mentioned. It is also notable that the inmates are heterogeneous in terms of mental health status, and that severe offences such as robbery, assault, and rape or sexual assault are highly related to the scores on 'antisocial' sub category. The study also reveals that there is a relation, if not causal, between mental health problem and frequency of discipline while in prison. Under basis of these findings, this study concludes that a number of inmates in our prison have mental health problems requiring mental health treatment services and suggests five key steps to effectively respond to the prevalence of mental health problems in prison at both the level of the clinical interventions and at the level of system structure and organization. Specially, the importance of collaborative service strategies of the correctional system with mental health systems are underlined.

• Journal of information and communication convergence engineering
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• 제9권5호
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• pp.577-582
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• 2011

EMR(Electronic Medical Record) is an emerging technology that is highly-blended between non-IT and IT area. One of methodology to link non-IT and IT area is to construct databases. Nowadays, it supports before and after-treatment for patients and should satisfy all stakeholders such as practitioners, nurses, researchers, administrators and financial department and so on. In accordance with the database maintenance, DAS (Data as Service) model is one solution for outsourcing. However, there are some scalability and strategy issues when we need to plan to use DAS model properly. We constructed three kinds of databases such as plain-text, MS built-in encryption which is in-house model and custom AES (Advanced Encryption Standard) - DAS model scaling from 5K to 2560K records. To perform custom AES-DAS better, we also devised Bucket Index using Bloom Filter. The simulation showed the response times arithmetically increased in the beginning but after a certain threshold, exponentially increased in the end. In conclusion, if the database model is close to in-house model, then vendor technology is a good way to perform and get query response times in a consistent manner. If the model is DAS model, it is easy to outsource the database, however, some technique like Bucket Index enhances its utilization. To get faster query response times, designing database such as consideration of the field type is also important. This study suggests cloud computing would be a next DAS model to satisfy the scalability and the security issues.

• 산업경영시스템학회지
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• 제34권1호
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• pp.74-79
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• 2011

Engineering valuation is a specialized discipline requiring expert knowledge and judgment, which scientifically estimates the economic value of industrial properties. By industrial properties, we mean engineering structures such as mines, factories, buildings, machines, and other industrial facilities as well as facilities of public enterprises. Particular industrial properties can have longer economic life if their performance is excellent and they are still suitable for current manufacturing needs. If not, its economic life will be shorter. As speed of technological progress becomes rapid, life-cycle and development period of a product is becoming shorter. In an industry characterized by rapid development of technology, industrial properties can become obsolescent faster. Even if they are in good working order, they could be no longer suitable for manufacturing new products based on radically different technology. In our research, we apply engineering approach to estimating functional economic life by factoring in technological obsolescence in such an industry.

• 보건의료산업학회지
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• 제10권2호
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• pp.133-144
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• 2016

Objectives : This study sought to identify the predisposing factors which influence the adolescent oral health enhancement behavior by analyzing controlling effects depending on the parents' oral health care behaviors in the relationship between the predisposing factors and adolescent behavior improvements which enhance oral health. Methods : A structured, self-administered questionnaire was given from July 6 through July 24, 2016. The collected data were analyzed with the SPSS 18.0 program. Results : Parents' oral health behaviors in terms of discipline and guidance showed a controlling effect in terms of importance (${\beta}$=.116) and benefits (${\beta}$=.133). In addition, the analysis showed that the parents' oral health care behavior had a controlling effect in terms of benefits (${\beta}$=.164) and susceptibility (${\beta}$=-.116). Conclusions : From the results of this study, the development of materials and education courses to lead to behavior changes are thought to be necessary in order to enhance the importance and benefits of the factors of oral health beliefs and to reduce psychological discomfort. Moreover, the role of parents with regard to desirable habits and beliefs to maintain oral health in their children is essential.

• 제어로봇시스템학회논문지
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• 제3권1호
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• pp.77-88
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• 1997

Fieldbus is the lowest level communication network in factory automation and process control systems. Performance of factory automation and process control systems is directly affected by the data delay induced by network traffic. Data generated from several distributed field devices can be largely divided into three categories: sporadic real-time, periodic real-time and non real-time data. Since these data share one fieldbus network medium, the limited bandwidth of a fieldbus network must be appropriately allocated to the sporadic real-time, periodic real-time and non real-time traffic. This paper introduces a new fieldbus design scheme which allocates the limited bandwidth of fieldbus network to several different kinds of traffic. The design scheme introduced in this study not only satisfies the performance requirements of application systems interconnected into the fieldbus but also fully utilizes the network resources. The design scheme introduced in this study can be applicable to cyclic service protocols operated under single-service discipline. The bandwidth allocation scheme introduced in this study is verified using a discrete-event/continuous-time simulation experiment.

• Structural Engineering and Mechanics
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• 제64권4호
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• pp.437-447
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• 2017

Explicit expressions for rapid prediction of inelastic design quantities (considering cracking of concrete) from corresponding elastic quantities, are presented for multi-storey composite frames (with steel columns and steel-concrete composite beams) subjected to service load. These expressions have been developed from weights and biases of the trained neural networks considering concrete stress, relative stiffness of beams and columns including effects of cracking in the floors below and above. Large amount of data sets required for training of neural networks have been generated using an analytical-numerical procedure developed by the authors. The neural networks have been developed for moments and deflections, for first floor, intermediate floors (second floor to ante-penultimate floor), penultimate floor and topmost floor. In the case of moments, expressions have been proposed for exterior end of exterior beam, interior end of exterior beam and both interior ends of interior beams, for each type of floor with a total of twelve expressions. Similarly, in the case of deflections, expressions have been proposed for exterior beam and interior beam of each type of floor with a total of eight expressions. The proposed expressions have been verified by comparison of the results with those obtained from the analytical-numerical procedure. This methodology helps to obtain the inelastic design quantities from the elastic quantities with simple calculations and thus would be very useful in preliminary design.

• 전기학회논문지
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• 제65권12호
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• pp.2251-2261
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• 2016

The use of renewable energy sources and energy storage systems is increasing due to new policies in the energy industries. However, the increase in distributed generation hinders the reliability of power systems. In order to stabilize power systems, a virtual power plant has been proposed as a novel power grid management system. The virtual power plant plays includes different distributed energy resources and energy storage systems. We define a core virtual power plant technology related to demand response and ancillary service for the cases of Korea, America, and Europe. We also suggest applications of the proposed virtual power plant to the vehicle-to-grid market for restructuring national power industries in Korea.