• Electronics and Telecommunications Trends
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• v.8 no.3
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• pp.39-52
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• 1993

This study involves a Common Cause Failure (CCF) problem on the ultra-high reliability required system development such as war game operations, nuclear power control, air traffic control, space shuttle missions, and large scale network communication system. The system situation problems are defined according to CCF, reliability and system fault identifications for the development cast verifications in the multi-version redundant software system. Then, CCF analysis of redundant system, system principles and statistical dependence are also described. This validation oh the CCF in the human software interaction system will notify software engineers to conceive what really is CCF contribution factor, not only the internal but the external ones.

• 제어로봇시스템학회:학술대회논문집
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• 2005.06a
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• pp.1590-1593
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• 2005

Security defects occurring within corporate networks and the Internet may be abused by internal or external malicious attackers. Such abuses cause a financial toll through expenditures on additional human resources, the impact of down-time as problems are fixed, as well as damage from divulging corporate informational assets. Hence, through the precise analysis of the possible defects in network security and the identification of risks, preventative policy should be established to ensure maximum security. This report reviews methodologies that calculate and analyze levels of network security in order to resolve these problems, and generates appropriate test steps, test methods, and test items.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2014.05a
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• pp.76-77
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• 2014

Stone is one of the oldest and most popular materials used on the external wall because of its durability, abundance and aesthetic effect. However, there are two main problems in the existing pin hole construction method. One is uniformity of construction quality, and the other is a repair work of stone panels. Therefore, a new method is needed to overcome these problems. This paper presents a new stone curtain wall system using under cut anchor and secondary holes that was developed by authors. The improved quality and reduction of construction period can be obtained by this system.

• ETRI Journal
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• v.39 no.2
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• pp.181-190
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• 2017

The movements of the human body are difficult to capture owing to the complexity of the three-dimensional skeleton model and occlusion problems. In this paper, we propose a motion capture system that tracks dynamic human motions in real time. Without using external markers, the proposed system adopts multiple depth sensors (Microsoft Kinect) to overcome the occlusion and body rotation problems. To combine the joint data retrieved from the multiple sensors, our calibration process samples a point cloud from depth images and unifies the coordinate systems in point clouds into a single coordinate system via the iterative closest point method. Using noisy skeletal data from sensors, a posture reconstruction method is introduced to estimate the optimal joint positions for consistent motion generation. Based on the high tracking accuracy of the proposed system, we demonstrate that our system is applicable to various motion-based training programs in dance and Taekwondo.

• Molecules and Cells
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• v.41 no.11
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• pp.943-952
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• 2018

The discovery and mechanistic understanding of target-specific genome engineering technologies has led to extremely effective and specific genome editing in higher organisms. Target-specific genetic modification technology is expected to have a leading position in future gene therapy development, and has a ripple effect on various basic and applied studies. However, several problems remain and hinder efficient and specific editing of target genomic loci. The issues are particularly critical in precise targeted insertion of external DNA sequences into genomes. Here, we discuss some recent efforts to overcome such problems and present a perspective of future genome editing technologies.

• Journal of Korean Society for Quality Management
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• v.25 no.1
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• pp.135-141
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• 1997

The Copper-Clad Laminate (CCL) is a main electronic component of specialtype printed circuit boards (PCBs) such as Silver Through Hole PCB. This CCL should have high reliability under the aging test, and usually the test is done at a higher temperature (110-$150^{\circ}C$) than the normal. Then, this test condition of high temperature may cause such quality problems as hole eccentricity and reduction of distance between part holes. After measuring the CCL shrinkage affected by temperature, the correction factor of a press mold was a, pp.ied to solve these problems. The results showed that the tolerance of hole pitch(${\pm}$$100{\mu}m$) was satisfactory and the internal and external failure costs were reduced by 55%.

• Journal of the Korean housing association
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• v.19 no.5
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• pp.67-75
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• 2008

The Progress and development of technology occurring since the 20th century has improved the quality of life of most people. However, serious energy problems have arisen as a result of this lifestyle of convenience and prosperity. These problems have already stared to threaten the very survival of human beings. Architecture and energy are no longer separate concepts. They are now considered as coexisting subject areas. The mutual relevance of energy, technology and architecture is expected to be more emphasized in the future. This study is concerned with the skin design of intelligent housing, which defines the external and infernal boundary. Applicable design techniques are suggested. The purpose of his study is to classify intelligent skin technologies and applications, and to grasp the design characteristics, advantages and disadvantages, as well as design techniques of each items related to Housing. This study will also suggest application techniques that can be used as basic data for determining an appropriate skin type when designing single buildings.

• Asian Journal of Business Environment
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• v.5 no.2
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• pp.15-22
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• 2015

Purpose - Following globalization, Kazakh companies are considered to be among the main economic agents of the country. The influence of Limited Liability Partnerships (LLPs) on Kazakhstan's economic development is becoming increasingly pronounced. Therefore, limitations and backwardness of legislation regarding regulation of corporate governance must be overcome at the earliest. Research design, data, and methodology - We considered the basis for legislation of corporate governance in Kazakhstan, and the corporate governance models that better describe the situation of being in the organization. Results - Earlier studies have identified several problems, including "transparency" of issuers and markets, and the consequent lack of (undeveloped) external control of managers of the former state-owned enterprises; lack of traditional corporate ethics and culture; and corruption, and other criminal aspects of the problem. This article describes several proposals to improve corporate governance in Kazakhstan to solve these problems. Conclusions - Domestic reformers acting without consideration of local features is a common occurrence today. They often ignore that these features are recommended for reputable international organizations, and therefore should be used carefully.

• School Mathematics
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• v.2 no.2
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• pp.489-508
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• 2000

With the increased use of computational technology, many educators question about spending large amount of class time for dealing with computational algorithms in elementary school math classroom at the expense of more holistic aspects of mathematics such as number sense, spatial sense, problem solving and data management. This paper introduce the new method for learning addition and subtraction so called ‘Mrs. Weill’s Hill’, which is believed as a suitable remedial method for children with mathematical learning disabilities, with perceptual problems, or with limited working memory capacities. This method provides children with external memory strategies by allowing them to solve the addition and subtraction problems in a stage by stage fashion with as many steps as they require. It also gives the child greater flexibility in the solution process and thus helps reduce anxiety.

• Proceeding of EDISON Challenge
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• 2015.03a
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• pp.452-459
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• 2015

Thanks to the development of applications, many people are using a smart phone cradle these days. But it has some problems. First of all, it is hard to fix on automobiles. Also, it is vulnerable to external vibration. Recognizing these problems, we decided to improve this device by using FreeCAD and ANSYS. Because FreeCAD is newly invented software, we used another 3D modeling software to cover shortages of tools in FreeCAD. Also, we used famous analysis software 'ANSYS' to analyze bending deformation, modal analysis, and harmonic analysis.