• Journal of the Korea Concrete Institute
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• v.22 no.3
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• pp.345-356
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• 2010

An alternative design method for interior flat plate-column connections subjected to punching shear and unbalanced moment was developed. Since the slab-column connections are severely damaged by flexural cracking before punching shear failure, punching shear was assumed to be resisted mainly by the compression zone of the slab critical section. Considering the interaction with the flexural moment of the slab, the punching shear strength of the compression zone was evaluated based on the material failure criteria of concrete subjected to multiple stresses. The punching shear strength was also used to evaluate the unbalanced moment capacity of the slab-column connections. For verification, the proposed strength model was applied to existing test specimens subjected to direct punching shear or combined punching shear and unbalanced moment. The results showed that the proposed method predicted the strengths of the test specimens better than current design methods in ACI 318 and Eurocode 2.

• The Korean Nurse
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• v.23 no.1 s.124
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• pp.25-35
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• 1984

인간 궁극의 목적은 ''행복한 생활''이며 이를 위한 가장 중요한 조건이 ''건강''이라는데 이론을 제기할 사람이 없다. 그간 우리나라는 1970년대를 거치면서 절대빈곤을 해결하느라고 경제개발계획을 수립하는 등 최선의 노력을 해 왔으며, 따라서 보건정책은 등한시 해 왔던 것이 사실이며 이는 극히 당연한 일이라고 생각한다. 최근 경제 개발 계획의 성공적인 시행으로 중진국의 대열에 서게 되었다. 산업 전략이 빚는 인구 이동의 불가피성, 인구의 도시집중 현상과 사회 구조의 변화는 생활방식 뿐 아니라 의식구조의 변화와 가치관의 변화를 가져왔으며 질병 양상과 건강 문제의 양상을 변화시켰다. 이로 말미암은 경제적, 지역적, 심리적 및 문화적 불균형 상태는 건강관호와 보건의료제도에도 불균형 상태를 갖고 와 불가피하게 된다. 이러한 불균형은 해소되어야 하는 시점에 온 것이며 정부가 목표로 하는 복지사회 건설을 위한 가장 중요한 보건 정책에 정부가 역점을 두게 된 것은 극히 당연하다. 이에 1976년 발족한 한국 보건 개발 연구원이 1977년부터 시작한 시법 사업을 실시한 결과, 지역 주민의 반응, 수용성, 의료 이용도, 의료비 절감 등을 분석하고 그 효율성을 인정받아 1981년 12월 31일 농어촌 보건의료를 위하여 특별 조치법을 제정하고 의료시설, 요원의 도시편중 교통의 불편, 고가의 의료 수가로 소외되어 오던 보건의료 취약지역 주민에게 기본권으로서의 기초 건강 서비스를 제공하기에 이르렀다. 이 건강 관호 제도에 그 바탕을 두며 보건 진료원이 그 척추의 역할을 담당한다. 1981년도와 1982년도에 선발되어 교육을 받고 배치된 738명의 보건 진료원은 38만명의 벽오지주민에게 현재 의료의 손길을 펴고, 질병의 예방을 위한 조치를 취하며 건강의 유지, 증진을 위하여 활동하고 있다. 건강관호는 시설이나 장비가 하는 것이 아니고 건물이 하는 것은 더욱 아니며, 지식과 기술을 갖춘 자격있는 의료인이 소명의식을 갖고 임할 때만 가능하다. 오랜숙원이었던 보건의료의 지역간 경제, 사회적, 문화적 계층간의 불균형을 해소하고 온 국민에게 기본권으로서의 건강을 갖도록 하는 이 새로운 제도는 패기에 넘치는 열정을 지닌 많은 젊은 간호학도들의 참여없이는 성공을 기대할 수 없다. 어떠한 제도이건 새로운 제도가 사회에 정착되기까지는 여러 해 동안의 시행착오와 고난이 반드시 수반되어 왔다는 사실을 우리는 역사를 통해 알고 있다. 그러나 그 제도가 다수를 위해 정의롭고 바람직한 제도일 때 반드시 성공을 거두었다는 사실도 알고 있다.

• The KIPS Transactions:PartA
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• v.13A no.1 s.98
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• pp.79-86
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• 2006

Recently the tagSNP selection problem has been researched for reducing the cost of association studies between human's diversities and SNPs. General approach for this problem is that all of SNPs are separated into appropriate blocks and then tagSNPs are chosen in each block. Marsel in this paper is the system that involved the concept of linkage disequilibrium for overcoming the problem that the existing block partitioning approaches have short of biological meanings. In most approaches, the contiguous regions, which recombinations have LD coefficient |D'| and then tagSNP selection step is performed. And MarSel guarantees the minimum tagSNP selection using entropy-based optimal selection algorithm when tagSNPs are chosen in each block, and enables chromosome-level association studies using efficient memory management technique when input is very large-scale dataset that is impossible to be processed in the existing systems.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.6
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• pp.2815-2822
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• 2011

Clustering method in wireless sensor networks is the technique that forms the cluster to aggregate the data and transmit them at the same time that they can use the energy efficiently. In this paper, I propose the hierarchical unequal clustering method using cluster group model. This divides the entire network into two layers. The data aggregated from layer 2 consisted of cluster group is sent to layer 1, after re-aggregation the total data is sent to base station. This method decreases whole energy consumption by using cluster group model with multi-hop communication architecture. Hot spot problem can be solved by establishing unequal cluster. I also show that proposed hierarchical unequal clustering method is better than previous clustering method at the point of network energy efficiency.

• Journal of Distribution Research
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• v.10 no.2
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• pp.49-72
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• 2005

As interdependence and conflict are important to the understanding of channel interactions, many researchers have studied their relationship. Identifying the relationship between interdependence and conflict will help understanding an exchange relationship. In social science, the relationship between interdependence and conflict is explained by two contradictory theories, and there are also inconsistent results in marketing science. The authors suggest non-linear relations between asymmetric interdependence and conflict, based on bilateral deterrence theory and conflict spiral theory. Using survey data from industrial market, we demonstrate that there is an inverted U-shaped relationship between asymmetric interdependence and interfirm conflict. The result show, as the magnitude of interdependence is high. the hypothesis on the non-linear relationship between asymmetric interdependence and conflicts is acceptable on both suppliers and distributors. Finally, we discuss several theoretical implications and suggest limitations and future research issues.

• Journal of the Korean Geographical Society
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• v.32 no.1
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• pp.91-112
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• 1997

This paper is mainly concerned with an understanding of spatial pattern of welfare by social indicators; thus an attempt for a social research is made to clarify spatial characteristics of welfare in Pusan through local welfare approach. The use of objective and subjective indicators simultaneously helps supplement the weakness which each of this indicators holds. The welfare level in Pusan showed various characteristics in the whole study area and in the all welfare sectors. Especially, the differences between objective and subjective welfare are found in the whole city. If the redistributional strategy is given to the priority among the welfare policies, it may be expected that the welfare level will be more equally distributed in Pusan.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.35 no.4
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• pp.385-390
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• 2011

In this study, we developed a micromixer based on the non-equilibrium electrokinetics at the junction of a microchannel and nanochannel. Two fluid streams were mixed by an electro-osmotic flow and a vortex flow created as a result of the non-equilibrium electrokinetics at the junction of the microchannel and nanochannel. Initially, the microchannel was fabricated using Polydimethylsiloxane (PDMS) by the general soft lithography process and the nanochannel was created at a specific position on the microchannel by applying a high voltage. To evaluate the mixing performance of the micromixer, fluorescent distribution was analyzed by using the fluorescent dye, Rhodamine B. About 90% mixing was achieved with this novel micromixer, and this micromixer can be used in microsystems for biochemical sample analysis.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.9 no.1
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• pp.37-43
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• 2015

In this paper, an efficient system using 3-axis accelerometer is proposed to diagnose the gait imbalance. The proposed hardware system consists of two 3-axis accelerometers to measure 3 directional acceleration of ankles and an embedded system to transfer the data. The acquired data were normalized and then compared to analyze the symmetry between normal and abnormal gait with ROCC (ratio of correlation coefficient). 10 healthy subjects were participated and each subject repeated the experiment 5 times. To make unbalanced ambulation, the height of the heel of one foot was changed during experiments. From the results, it is verified that ROCC index grew apart from the reference according to growing imbalance and the proposed system could be available for estimation of gait imbalance.

• Environmental and Resource Economics Review
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• v.24 no.4
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• pp.709-725
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• 2015

This study is to analyse the relationship between the price and the supply in the farming Olive Flounder's production area market. The data used in this study correspond to daily price and supply quantity covering time period from January 1, 2007 to June 30. 2013. The analysis methods of cointegration and vector error correction model are employed. The empirical results of this study are summarized as follows: First, the price and the supply follow random walks and they are integrated of order 1. Second, the price and the supply are cointegrated. Third, vector error correction model suggests that the relationship between the price change ration and the supply quantity change ratio has negative and feedback effect exists in the long-run, but the disequilibrium between the price and the supply is corrected by the supply quantity. Finally, vector error correction model suggests that the supply quantity leads the price in the short-run. This indicates that the decrease(increase) of the supply quantity results in the increase(decrease) of the price.

• The Korean Journal of Applied Statistics
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• v.30 no.5
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• pp.681-690
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• 2017

Various imbalanced binary classification problems exist such as fraud detection in banking operations, detecting spam mail and predicting defective products. Several sampling methods such as over sampling, under sampling, SMOTE have been developed to overcome the poor prediction performance of binary classifiers when the proportion of one group is dominant. In order to overcome this problem, several sampling methods such as over-sampling, under-sampling, SMOTE have been developed. In this study, we investigate prediction performance of logistic regression, Lasso, random forest, boosting and support vector machine in combination with the sampling methods for binary imbalanced data. Four real data sets are analyzed to see if there is a substantial improvement in prediction performance. We also emphasize some precautions when the sampling methods are implemented.