• Proceeding of KASS Symposium
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• 2008.05a
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• pp.184-188
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• 2008

Performance degradation of concrete structures is generally caused by structural deteriorations, such as cracks. It may result in serious defects of concrete structures. Methods of damage detection are used a visual angle of human or non-destructive test, and they are using various sensors. Problems of crack damage detection are occurred to directions of cracks by using 1 axial type of accelerometer in concrete element. In addition, these sensors are not used to occurring fire in RC building. Thermocouple sensors are able to using measurement of temperature in fire, and then deformations of main element and structures are not used. In this study, fundamental studies for development of multiple function sensor using 3 axial type of accelerometer and electric resistance property of thermocouple sensors are discussed estimation to stability of structures when happened form active load or fire, and so on.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.19 no.6
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• pp.103-107
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• 2019

As the number of foreign tourists increases worldwide, it provides tourism services with various information and convenience. Most foreign tourists have difficulty using existing methods that require internet connection because internet communication is restrictive. In this paper, we propose a mobile device based digital signage via WPAN that can support multi-lingual for foreign tourists. the proposed method shows a menu by combining a template of mobile client with fundamental contents from digital signage through WPAN. To evaluate the performance of the proposed method, it is compared with a conventional webpage method. The results of the evaluation confirm that the latency decreases compared to the conventional webpage method due to the improved loading time.

• Korean Journal of Oriental Medicine
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• v.12 no.2 s.17
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• pp.47-62
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• 2006

This research is intended to analyze the necessity of the integrated organization for the performance in order to the extension of scale and the systematic promotion concerning to the Korean medicine informational project, and to research the promotional method of Korean Medicine information through the constitution of organization for preparing the informational basic. There are three main important subjects to be done in this research project. The initial issue is to devise a comprehensive and systematic plan of Korean medicine information according to the Korean Medicine Rearing Raw('03. 8). Furthermore, it is necessary to reinforce the integrated informational ability of Organizations concerning to the Korean Medicine. Finally, with the above works accomplished, the overall standard of Korean Medicine Information should be settled. Initially, we compose an advisory committee of the Korean Medicine Information in the first year. The members of the committee include the informational coordinates of related government agencies, the experts in Korean Medicine Information, and specialists in the domains of computer science and information. In the next phase, we derive the promotional strategy for 'Center for Korean Medicine Information'. In other words, by means of analyzing the current issues and outstanding problems of on-going research projects and environments, the ultimate directions of the whole activities are established. Also, we build the medium and long-range road map of Korean Medicine Information Research by setting strategy for the policy projects related to the area. With the various research activities in this project, we can achieve the following practical strategic benefits. Firstly, we can lay a foundation for the Korean Medicine Information by establishing the fundamental plan for 'Korean Medicine Information Center'. Secondly, information strategic projects about 'Korean Medicine Information Center'. Secondly information strategic projects about 'Korean Medicine Information Development' can be performed in more systematic fashion and promoted by stages. Finally, by confirming the contents of the Korean Medicine of KMS system, we invent an opportunity of new project in the field of the Korean Medicine Information by means of practicing and managing the 'korean Medicine Information Custom Service'.

• The Journal of Korean Institute for Practical Engineering Education
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• v.2 no.1
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• pp.120-125
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• 2010

The priority job training program is one of key training programs in Korea. This training program has some fundamental problems. The process of selecting the detailed training jobs does not reveal the true training demand of industry sectors. The contracting-out process and control mechanism of the priority job training program show several weaknesses from the points of success conditions of contracting-out public services. In this paper, I proposed development strategies of the priority job training program. The contract period should be longer than one year so that the training institutions may invest for improving quality of training in the longer perspective and reduce transaction costs. The training fee pay mechanism should be more performance-based.

• The Journal of Information Technology
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• v.2 no.2
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• pp.69-88
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• 1999

Only service organizations providing service quality above customers' anticipations have survived and developed in hyper competitive environment. These organizations are more dependent on their customer-contact service employees than those providing tangible products, because of the characteristics of service, intangibility, inseparability, heterogeneity, and perishability. But few researches focused on the efficient managements or controls of service organizations in this context. Therefore, author aimed at understanding of the determinants of service organizations' control system(i.e., characteristics of service), service employees' reaction on control types(i.e., service employees' role stress), and their performance(perceived service quality by customers). First the concepts of service quality and control systems are described. Specially, author explained the differences between service quality and service satisfaction or service attitude, and the control system types and their fundamental ideologies. Second, some propositions are provided according to integrated framework developed in this paper: (1)control types according to the characteristics of service, (2)influences of control systems on employees' reactions and (3)perceives service quality by the customers, and (4)relationships between the reactions and the service quality. This paper concludes with a summary, a discussion of theoretical and managerial implications, and several suggestions for future directions.

• Journal of the Korean Institute of Intelligent Systems
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• v.8 no.2
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• pp.9-20
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• 1998

In this paper, a new distance relaying scheme is proposed. Artificial neural networks are applied to the distance relaying system composed of pattern recognition based. The proposed distance relaying scheme has two blocks of pattern recognition stages to estimate the fundamental frequency and to classify the fault types. In the first block, a filtering method using neural networks called a neural networks mapping filter(NMF) is presented to efficiently extract the features. And in the sec'ond block, the estimator called neural networks fault pattern estimator(NFPE) is also presented to classify the fault types by the extracted effective features obtained from NMF. Each block of these applied schemes is trained by back-propagation algorithm of multilayer perceptron and show the fast and accurate pattern recognition by ability of multilayer neural networks. The test result of this approach are obtained the good performance from the fault transient wave signals of EMTP(e1ectromagnetic transients program) in the various fault conditions of power systems.

• Korean Journal of Occupational Health Nursing
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• v.27 no.2
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• pp.77-88
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• 2018

Purpose: This study aimed to investigate the degree of role conflict and its ambiguity, and fatigue in clinical nurses and to analyze the effect of these on their self-resilience in order to provide fundamental data for improving their working environment after the Middle East Respiratory Syndrome outbreak. Methods: After the collection of data from 258 clinical nurses in five general hospitals, t-test, ANOVA, Pearson's correlation coefficient, and multiple regression were performed using IBM SPSS Statistics 20.0. Results: A significant positive correlation was found between nurses' role conflict and ambiguity and fatigue; while a negative correlation was found between nurses' role conflict and ambiguity and self-resilience. A significant negative correlation was found between fatigue and self-resilience. According to the study results, the factor that affected clinical nurses' self-resilience the most was role conflict and its ambiguity, followed by marital status, fatigue, educational level, religion, and related tasks, which together accounted for 38% of self-resilience in clinical nurses. Conclusion: To improve weaknesses in nursing care after the Middle East Respiratory Syndrome outbreak, the scope of nursing care was changed upon the expansion of integrated nursing and care-giving services. Therefore, in the rapidly changing environment of nursing, policies to improve nursing performance, as well as successful reaction capability, are suggested.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.3
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• pp.55-60
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• 2014

For an high speed communication, a 40GHz VCO was implemented using a 0.11um standard CMOS technology. The mm-wave VCO was designed by a LC type using a spiral inductor, and a simplified architecture with buffers and a smart biasing technique were used to get a high performance. The frequency range of the proposed VCO is 34~40GHz which is suitable for mm-Wave communication system. It has an output power of -16dBm and 16% tuning range. And the phase noise is -100.33dBc/Hz at 1MHz offset at 38GHz fundamental frequency. The total power consumption of VCO including PADs is 16.8mW with 1.2V supply voltage. The VCO achieves the FOMT of -183.8dBc/Hz which is better than previous VOCs.

• Fashion & Textile Research Journal
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• v.6 no.4
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• pp.503-510
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• 2004

The study is one of fundamental researches for the development of future smart clothing and textile products with blocking properties from electromagnetic waves by analyzing human physical symptoms in using electromagnetic products in such an environments. Among various textiles in the experiment, nano silver has shown the best blocking performance from electromagnetic waves, which decreases depending on the distance. The power spectrum distribution and the incidence of electroencephalogram between blocking materials and aural stimuli has shown that, ${\beta}$, wave appeared to be active in all channels except for $T_4$, whereas all waves appeared with processed materials and especially with nano silver silk(NSS), ${\alpha}$, ${\beta}$, ${\theta}$, ${\gamma}$ waves appeared active in all regions. As for the brain mapping of ${\alpha}$ wave according to time, there found a strong activity in $P_3$, $P_4$ of the parietal lobe, with all materials on all time regions. With silk nylon metal(SNM) and NSS, it appeared strong in $F_3$, $F_4$ as well. As for ${\beta}$, wave, the activity appeared strong in frontal lobe before 7min. 30sec, where it tends to diminish abruptly in 7min. 30sec. to 13min. 30sec. region. After 13min., it regained gradually. With NSS, it appeared strong in all areas except for the farthest $T_4$. The appearance of ${\nu}$ wave can be deduced as it can affect human body with its toxic property while the silver particles become nano-sized. Therefore, the study conducted with human participants requires a proper particle size of it which would not penetrate cellular tissues and a proper binder and binding treatment for it, to prevent the physical fatigues and the potential diseases. However, it is highly required for back-up researches to verify various aspects in applying nano silver to textile products.

• The Journal of the Korea Contents Association
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• v.14 no.10
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• pp.270-278
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• 2014

The stability and security management of IT data becomes more important because information security threats increases rapidly in Big Data era. The operational policy of the data backup considering information security threats is required because the backup policy is the fundamental method that prevents the damage of security threats. We present an economic approach for a data backup system with information security threats which damage the system. The backup operation consists of the differential backup and the batch backup. We present a stochastic model considering the occurrence of information security threats and their damage. We analyze the stochastic model to derive the performance measures for the cost analysis. Finally we analyze the average cost of the system and give numerical examples.