• Journal of the Society of Disaster Information
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• v.9 no.1
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• pp.50-55
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• 2013

Self-Prevention Plan Review Report and Review Standards Process Safety Management(PSM), Safety Management System(SMS), including the contents of the safety management system audit standards, notices and guidelines on the screening form and were analyzed. Were expected through the interview and screening personnel in the screening process to identify problems prior research so that it can be reflected in the. Also divided into methods such as document review and on-site implementation status of the review written Emergency Preparedness Plan depending on the item proposed. Toxic Chemicals Control Act(TCCA) Self-Prevention Plan Review Regulations. However, the substantial approval process, and do not enable the system performance lacked Self-Prevention Plan Review. Review half configuration to enhance the professionalism and efficiency of the work of this research was performed.

• Korean Journal of Legislative Studies
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• v.22 no.2
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• pp.157-188
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• 2016

Since democratic transition in the early 1990s, constitutionalism is getting more important for democratic consolidation in Africa. Using Afribarometer data set, this paper explains influences on public confidence in judiciary. High levels of public trust in judiciary is a necessary condition for judicial system to work effectively in emerging democracy. Unlike existing studies focusing on the function of judiciary and legal procedures, this paper is interested in the relationship between how ordinary Africans perceive the attitudes of the chief executive toward judiciary, the rule of law, and judicial corruption and their confidence in judiciary. The results show that those who think that the chief executive is likely to respect the constitution and the judiciary, that the law applies to everyone equally, and that there are few corrupt judicial personnel are likely to show high levels of confidence in judiciary. This study argues that the tension between laws and politics have a significant influence on transitional justice in emerging democracy.

• Korean Journal of Construction Engineering and Management
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• v.22 no.3
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• pp.12-20
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• 2021

In order to secure construction quality and safety and prevent cost disputes, the importance of calculating 'the appropriate construction period' has recently emerged. It is necessary to analyze a considerable amount of historical data to establish the standard for calculating the construction period. However, many experts are raising questions about the use of past data due to changes in the construction business environment, such as shortening working hours, reinforcing quality regulations, and changing climate conditions. In addition, the possibility of errors increases when calculating a uniform construction period using historical statistics because the work order and productivity are very diverse according to construction conditions. Therefore, through this study, a new solution to change from the method of analyzing past data to the method of reviewing current production data through an active 'transformation of thoughts' was proposed through this study. In other words, the process of reviewing and calculating 'the appropriate construction period' was institutionalized by introducing 'process management experts' and 'construction experts by type of construction' in the design stage.

• The Journal of the Korea Contents Association
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• v.19 no.8
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• pp.440-452
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• 2019

The objective of this study is to analyze the mediation effect of communication and interpersonal relations in the impact of job stress of female workers with disabilities on organizational commitment. The subjects are 508 female workers with disabilities who participated in the 1st wave of the Panel Survey of Employment for the Disabled in Years7-8 (2014-2015). A multiple regression analysis was conducted, and the mediation effect was verified according to the research procedures of Baron and Kenny(1986) using bootstrapping. The results showed that organizational justice and work environment stress faced by female workers with disabilities had a negative impact on organizational commitment, and communication and interpersonal relations had a partial mediation effect. Based on these results, this study suggested ways to reduce job stress and increase organizational commitment of female workers with disabilities.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.31 no.4A
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• pp.269-278
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• 2011

Recently, methods on minimizing environmental effect caused from human-made goods have been studied in various research fields. Such issue has been also spotlighted into the civil engineering field; however, application of environmental performance assessment on civil structures is very complicated, since they handles vast ranges of materials and has comparatively long life span with various construction stages. Thus, this study intended to apply environmental performance assessment into an ordinary type of steel box girder bridge, using most popular Life cycle assessment (LCA) procedures, which are called Survey-based method and Indirect method. For better comparison of two methods, greenhouse effect of the example bridge is considered. As result of analysis, total $CO_2$ emission is evaluated as 241.27 ton with Survey-based method while it is evaluated as 221.03 ton with Indirect method. It is also revealed that most $CO_2$ is generated from the process of manufacturing and producing construction materials. Such result indicates that the efficient design which secures certain level of structural safety with minimized input materials. It is considered that the specific LCA on civil structure performed in this study could be utilized to other civil structures for reasonable environmental performance assessment.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.1
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• pp.139-145
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• 2016

Dumbbell is the most basic topology that can be used in almost all kind of network experiment within it or just by little expansion. While Transmission Control Protocol TCP is the basic protocol that is used for the connectivity among networks and stations. TCP major and basic goal is to provide path and services to different applications for communication. For that reason TCP has to transfer a lot of data through a communication medium that cause serious congestion problem. To calculate the congestion problem, different kind of pre-cure solutions are developer which are Loss Based Variant and Delay Based Variant. While LBV keep track of the data that is going to be passed through TCP protocol, if the data packets start dropping that means congestion occurrence which notify as a symptom, TCP CUBIC use LBV for notifying the loss. Similarly the DBV work with the acknowledgment procedure that is used in when data ACK get late with respect to its set data rate time, TCP COMPOUND/VAGAS are examples of DBV. Many algorithms have been purposed to control the congestion in different TCP variants but the loss of data packets did not completely controlled. In this paper, the congestion control algorithms are implemented and corresponding results are analyzed in Dumbbell topology, it is typically used to analyze the TCP traffic flows. Fairness of throughput is evaluated for different TCP variants using network simulator (NS-2).

• Journal of the Korean Data and Information Science Society
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• v.28 no.2
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• pp.339-348
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• 2017

One of the major issues of statistical process control for variables data is monitoring both the mean and the standard deviation. The traditional approach to monitor these parameters is to simultaneously use two seperate control charts. However there have been some works on developing a single chart using a single plotting statistic for joint monitoring, and it is claimed that they are simpler and may be more appealing than the traditonal one from a practical point of view. When using these control charts for variables data, estimating in-control parameters and checking the normality assumption are the very important step. Nonparametric Shewhart-Lepage chart, proposed by Mukherjee and Chakraborti (2012), is an attractive option, because this chart uses only a single control statistic, and does not require the in-control parameters and the underlying continuous distribution. In this paper, we introduce the Shewhart-Lepage chart, and propose the design procedure to find the optimal diagnosis limits when the location and the scale parameters change simultaneously. We also compare the efficiency of the proposed method with that of Mukherjee and Chakraborti (2012).

• The Journal of Korean Association of Computer Education
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• v.22 no.2
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• pp.1-9
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• 2019

In order to improve the quality of textbooks, this study analyzed seven informatics textbooks published based on the 2015 revised curriculum. Content analysis was used to analyze the organization system of these textbooks. Learning objectives of the textbooks were also analyzed according to Anderson's taxonomy of educational objectives. Furthermore, a textbook satisfaction survey, in which textbook selection criteria were applied, was given out to preliminary teachers. The results showed that the textbooks were similarly organized, centered on practice, activities, differentiated learning, and small group learning. However, the number of pages varies considerably for each chapter. After analyzing learning objectives of the textbooks, it was found that in terms of cognitive processes, 'understanding' (53%) was the highest item and 'analyzing' (16%) the second highest; in terms of type of knowledge, 'conceptual' (42%) and 'procedural' (31%) accounted for the two highest categories; in terms of cognitive domains, there has been a significant increase in 'analyzing' and 'creating' facets for learning objectives of these new versions of textbooks as compared to those of previously existed textbooks. In the satisfaction survey on a 5-point Likert scale, 'the accuracy and fairness of the content' had the highest points at 4.21 among four scale items. In this study, the improvement of the textbook is proposed based on the findings from this analysis.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.37 no.4
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• pp.1-10
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• 2019

The purpose of this study is to examine the design ＆ construction methods of the traditional landscape space of the past and the repair and maintenance of cultural heritages to maintain it today. To this end, the method of narrative description, process extraction and construction related to traditional landscaping were compared to each other based on the 『Imwongyeongjeji』 「Seomyongji」 and 'Standard Specification for Repairing Cultural Heritages'. The results are as follows; First, to analyze at the description methods of the 『Imwongyeongjeji』 「Seomyongji」 and 'Standard Specification for Repairing Cultural Heritages' and related processes in the field of traditional landscaping. 『Imwongyeongjeji』 「Seomyongji」 was an encyclopedia of the overall construction method of the living space, describing the location, effect, and advantages and disadvantages of each component and presenting quantitative figures to institutionalize the construction of traditional landscaping spaces. 'Standard Specification for Repairing Cultural Heritages' presented the entire process of repairing cultural heritages, and it is becoming a kind of guide for reference at the site. Among them, foundation construction, roof construction, landscape construction, and fence construction were drawn as items that could be applied to traditional landscaping areas. Second, the traditional landscape space construction method was divided into the processes of foundation construction, roof construction, landscaping construction, and fence construction. Foundation construction is a way of repeating the process of land-tramping. During the construction of the roof, the tile-roofed building was built on top of the rafters and roofed with tiles. And thatched roof was made to a number of rice straws bundles to cover the roof one after the other. Instead of tiles, the stone roof was made of thin and wide stones, and the wooden boards were used for the single roof and the bark roof were constructed with many layers of dried corrugations. Landscape construction mainly consists of the Paving technique through tramping rubble and the construction of terraced flower by planting stone, plants, and shrubs on the top. According to the building materials, the wall construction was derived from the earth-stacked earthen wall, stone walls using stone and clay, marble walls made of tile patterns, and the construction of a board wall using a wood board as a wall. Third, comparing the construction methods of the 『Imwongyeongjeji』 「Seomyongji」 and 'Standard Specification for Repairing Cultural Heritages', 『Imwongyeongjeji』 「Seomyongji」 focuses on standardizing the construction methods to create a new traditional space. There is a difference in the setting of the scope of the 『Imwongyeongjeji』 「Seomyongji」 and the construction because 'Standard Specification for Repairing Cultural Heritages' provides the overall construction procedure considering the diversity of the cultural heritages. In addition, the traditional landscape space used to be a residential space in the past, but today, the maintenance process of the already established facilities as designated cultural heritages has been carried out, and construction methods have been added to create viewing conditions. In terms of the succession of traditional knowledge, some similar methods were found in the repair of cultural assets today, and some cases were also confirmed in the reconstruction of traditional technologies such as application of some materials or mix, separation of added facilities and introduction of efficient construction methods.

• Journal of Food Hygiene and Safety
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• v.34 no.2
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• pp.140-147
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• 2019

An analytical method was developed for the determination of quinoxyfen in agricultural products using the QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method by liquid chromatography-tandem mass spectrometry (LC-MS/MS). The samples were extracted with 1% acetic acid in acetonitrile and water was removed by liquid-liquid partitioning with $MgSO_4$ (anhydrous magnesium sulfate) and sodium acetate. Dispersive solid-phase extraction (d-SPE) cleanup was carried out using $MgSO_4$, PSA (primary secondary amine), $C_{18}$ (octadecyl) and GCB (graphitized carbon black). The analytes were quantified and confirmed by using LC-MS/MS in positive mode with MRM (multiple reaction monitoring). The matrix-matched calibration curves were constructed using six levels ($0.001-0.25{\mu}g/mL$) and the coefficient of determination ($R^2$) was above 0.99. Recovery results at three concentrations (LOQ, 10 LOQ, and 50 LOQ, n=5) were in the range of 73.5-86.7% with RSDs (relative standard deviations) of less than 8.9%. For inter-laboratory validation, the average recovery was 77.2-95.4% and the CV (coefficient of variation) was below 14.5%. All results were consistent with the criteria ranges requested in the Codex guidelines (CAC/GL 40-1993, 2003) and Food Safety Evaluation Department guidelines (2016). The proposed analytical method was accurate, effective and sensitive for quinoxyfen determination in agricultural commodities. This study could be useful for the safe management of quinoxyfen residues in agricultural products.