• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.2
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• pp.875-882
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• 2014

The purpose of this study is to examine the effects of social capital on the life satisfaction of the community residents. For the research, social capital was consisted of participation, network, trust and norm. To achieve the purpose of this research, data were collected from 279 citizens of S-city in Gangwon-Do. The results of this study were summarized as follows: Mean analyses showed that social capital had $3.02{\pm}.52$. According to hierarchical multiple-regression, participation(${\beta}$=.26, p<.001), network(${\beta}$=.17, p<.01) and trust(${\beta}$=.16, p<.01) among social capital showed positive influence on life satisfaction of community residents(R2=.35). This study finally discussed theoretical implications for future study and practical implications on the results.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.11
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• pp.2758-2764
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• 2015

In the field of electronic warfare applications, high voltage power supply(HVPS) for high power phased array transmitters must necessarily have an independent operating characteristics for driving mini TWTs. TWT independent operational characteristics, in order to run without interrupting the electronic warfare mission by maintaining the partial transmission function even when one of the TWT has occurred a failure, is known to be very important. In this paper, we describe the research on high-speed independent control system using a high-density HVPS, including FE modulators, hardware configuration and the FPGA in order to independently operate mini TWTs. Also, we have simulated some possible faults in phased array transmitters, and presents the test results to control a faulted TWT independently.

• Journal of the Korean Society of Fisheries and Ocean Technology
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• v.31 no.2
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• pp.199-209
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• 1995

From the results of model tests, statistical regression analysis of EHP estimation based on hull form parameters is adopted in this study. From this result, the method for estimation of EHP at the initial design stage of fishing boats is developed. This method is applied to four standard fishing boats with chine lines and two standard fishing boats with round bottom. The EHP's are estimated and compared to experimental results. In the case of six fishing boats, the estimated EHP corresponds well and approximates well with experimental results through out all the range tested. From these results it can be concluded that this numerical method is very efficient in estimating EHP of fishing boats having chine line and round bottom. Therefore, by applying the proposed method to design of fishing boats, we can improve the resistance characteristics. Further, this method can contribute to reduction of design time and thus down the total expenses.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.11
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• pp.4121-4128
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• 2010

A probe card is used in testing semiconductor wafers. It must maintain a precise location tolerance for a fine pitch due to highly densified chips. However, high heat transferred from its lower chuck causes thermal deformations of the probe card. Vertical deformation due to the heat will bring contact problems to the pins in the probe card, while horizontal deformation will cause positional inaccuracies. Therefore, probe cards must be designed with proper materials and structures so that the thermal deformations are within allowable tolerances. In this paper, heat transfer analyses under realistic loading conditions are simulated using ANSYS$^{TM}$ finite element analysis program. Thermal deformations are calculated based on steady-state temperature gradients, and an optimal structure of the probe card is proposed by adjusting a set of relevant design parameters so that the deformations are minimized.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.11
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• pp.4087-4094
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• 2010

The sensor data which is measured by Quadruped robot is utilized to recognize the physical environment or other information and to control the posture and walking of robot system. In order to control the robot precisely, high accuracy of sensor data is required, most of these sensors however, belongs to expensive and low-durable products. Moreover, these are exposed excessive load operation in a field condition if it is applied to field robot system. This issue becomes more serious one when the robot system is manufactured as a mass product. As in this context, this study suggests a virtual sensor technology to alternate or assist the main sensor system. This scheme is realized by using back-propagation algorithm of neural network theory, and the quality of estimated sensor data could be improved through the algorithmic and hardware based treatments. This study performs the various trial to identify the effective parameters which effect to the quality and reliability of estimated sensor data and tries to show the possibility of proposed methodology.

• 한국IT서비스학회:학술대회논문집
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• 2006.11a
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• pp.352-359
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• 2006

VoD 전송 방식을 설계할 때 가장 중요한 요소들에는 정해진 대역폭에서 사용자 대기시간 (Viewer's Waiting Time)과 클라이언트에서 요구하는 최대 버퍼 요구량(Max Client Buffer Requirement)을 줄이는 문제를 꼽을 수 있다. 점점 더 복잡해지는 VoD 전송 기술의 개발로 인해 사용자 대기시간과 최대 버퍼 요구량의 관점에서 성능 향상과 반비례하는 시스템 복잡도를 줄이는 문제 또한 VoD 전송 방식을 설계 시 고려 해야 할 중요 사항 중의 하나이다. 이 논문에서는 시스템 복잡도를 낮추면서 사용자 대기시간과 최대 버퍼 요구량의 성능을 동시에 향상시키기 위한 방법으로 기존의 VoD 전송 방식들 가운데 가장 간단한 모델과 최대 버퍼 요구량의 성능을 가장 향상시킨 모델의 결합으로 구현 가능한 Hybrid 방식을 제안하고 있다. 이 논문은 결과적으로 사용자 대기시간은 기존 Staircase Broadcasting방식과 Fast Broadcasting 방식과 비교했을 때 동일한 성능을 나타내고 있고 최대 버퍼 요구량은 유사성능을 나타냄을 알 수 있다. 이 논문에서 제안한 방식은 사용자 대기시간이 짧아야 하고 저장공간이 많이 요구되지 않으며 사용자의 요청이 갑자기 증가될 수 있는 hot 비디오에 적용이 가능하다. 또한 다양한 환경에 따라 Staggered Broadcasting 방식과 Staircase Broadcasting 방식의 채널 수를 적절히 조정함으로써 데이터 송수신 효율을 극대화 시킬 수 있다. 이 논문의 구성은 제시한 방법에 적용된 방식들과 비교대상이 되는 방식들에 대해 살펴보고 제시한 방식의 성능 모델을 이용한 실험을 통해 각종 VoD 전송 방식들과 비교 분석하는 과정으로 기술하였다.

• Journal of KIISE:Software and Applications
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• v.29 no.7
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• pp.450-464
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• 2002

Many modern complex systems, including most object-oriented systems, have dynamic characteristics that their components are dynamical]y configured during run-time. However, few analysis techniques are available that consider the dynamic nature of systems explicitly. We propose a specification and analysis method for these dynamic systems. We design a new temporal logic, called HDTL, to specify the properties of dynamically evolving systems, and tune up the tableau method for this logic. HDTL incorporates variables and quantifiers that enable the automatic analysis. Using HDTL and the analysis method, we can specify the correctness requirements of systems and check whether the system actually agree with the requirements or not. An experiment shows that HDTL is suitable for specifying dynamic properties and the analysis technique works well.

• Smart Media Journal
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• v.6 no.2
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• pp.26-32
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• 2017

In this paper, we implement a signal-detecting electric circuit based LED lighting control system which is essential in NUI technology using EPIC converting surrounding earth electric field disturbance signals to electric potential signals. We used signal-detecting electric circuits which was developed to extract individual signal for each EPIC sensor while conventional EPIC-based development equipments provide limited forms of signals. The signals extracted from our developed circuit contributed to better performance as well as flexiblity in processes of feature extracting stage and pattern recognition stage. We designed a system which can control the brightness and on/off of LED lights with four hand gestures in order to justify its applicability to real application systems. We obtained faster pattern classification speed not only by developing an instruction system, but also by using interface control signals.

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.243-249
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• 2019

The purpose of this study is to investigate the factors affecting the respect for life of nursing students and to prepare the basic data for developing educational programs to establish proper awareness of the life of nursing students and nurturing it. This is a descriptive research study. A total of 146 nursing students were included in this study. Data analysis was performed using t-test, ANOVA, Pearson correlation coefficients, and multiple regression. The results of this study confirmed the meaning of life, spiritual wellbeing, and attitude toward death as factors influencing respect and will for life. The explanatory power of these three factors was 26.3%. Therefore, nursing students will be able to cultivate respect for life by increasing their understanding of the meaning of life, improving their level of spiritual well-being, and reducing their negative attitudes about death. Also, in order to improve the respect for life of nursing students, it will be possible to develop an intervention program to improve life respect including the factors identified in this study. Ultimately, it is expected to grow into a nurse who can provide real help to patients who are at the end of life or who are dying.

• The Journal of the Convergence on Culture Technology
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• v.5 no.4
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• pp.271-276
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• 2019

This study is about the effectiveness of Jahwal consulting. We analyzed 275 self-supporting participants of 58 self-supporting companies in eight wide-area self-supporting centers nationwide. After consulting by conducting a questionnaire before consulting, we conducted a questionnaire to analyze the differences. The measurement variables consisted of 3 variables and 6 subparameters. The top variables are interpersonal relationships, organizational systems, and self-help business will. The sub-elements are interaction, communication between members, horizontal leadership, organizational stability, personal suitability and developability. The questionnaire was analyzed using SPSS 21.0, frequency analysis, and t-test. The purpose of this study is to verify the effectiveness of consulting conducted by Jahwal institutions. For this reason, we developed a measurement scale, and analyzed changes before and after consulting using that scale. As a result of the analysis, it was found that self-help consulting is effective. It was also analyzed that there was mode significance in the analysis by gender, age, region and educational background.