• Steel and Composite Structures
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• 제38권5호
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• pp.547-562
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• 2021

This paper aims to explore the mechanical behavior and moment-rotation model of blind bolted joints between concrete-filled double skin steel tubular columns and steel-concrete composite beams. For this type of joint, the inner tube and sandwiched concrete were additionally identified as basic components compared with CFST blind bolted joint. A modified moment-rotation model for this type of connection was developed, of which the compatibility condition and mechanical equilibrium were employed to determine the internal forces of basic components and neutral axis. Following this, load transfer mechanism among the inner tube, sandwiched concrete and outer tube was discussed to assert the action area of the components. Subsequently, assembly processes of basic coefficients in terms of their stiffness and resistances based on the component method by simplifying them as assemblages of springs in series or in parallel. Finally, an experimental investigation on four substructure joints with CFDST columns for validation purposes was carried out to capture the connection details. The predicted results derived from the mechanical models coincided well with the experimental results. It is demonstrated that the proposed mechanical model is capable of evaluating the complete moment-rotation relationships of blind bolted CFDST column composite connections.

• 품질경영학회지
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• 제48권1호
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• pp.125-147
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• 2020

Purpose: This study would measure the users'perceived overall quality level of A automobile Company, which has leading market power in the domestic automobile market and analyze the causal relationships in the quality value process Model to quality capability, customer value and loyalty based on that. Especially, this study would analyze the relative impacts of the users'perceived risks appearing in the quality value process model of the formation of Quality Factors(QF), Customer Value(CV), and Customer Loyalty(CL) and analyze the moderating effect of the causal relationships among the components. Methods: For an analysis of causal relationships connected to QF, CV, and CL of the customers who purchased Auto manufacturer A's automobile users, 179 users who used within 3 years were utilized as samples for the analysis. As for QF, based on the Garvin(1988), the QF of automobiles were redesigned. For a structural equation analysis of the entire research model, the PLS(S(Partial Least Square) model was utilized. Results: As a result of an analysis, R2 of CV and CL was 0.652 for CV and 0.664 for CL, which was a very stable Goodness of fit. As a result of an analysis of the hypotheses of QF and CV, automobile performance, conformance, aesthetics, serviceability, and durability. In addition, it turned out that the perceived risk had a moderating effect on convenience, service availability, and perceived quality. Conclusion: This study found that the perceived quality risk appearing among automobile users had negative effects on the quality value process model to QF, CV and CL. In contrast, there were factors not affecting the users'quality value process in spite of the perceived risk. These factors can suggest important managerial implications in that they can be utilized as Auto manufacturer A's market-dominant strengths.

• 한국실내디자인학회논문집
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• 제9호
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• pp.18-23
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• 1996

Among the building types in which behavioral issues play, the largest role are institutional environments. Such setting share a number of important characteristics ; they serve specific population (e.g. the ill, the elderly , '||'&'||' inmates) : they are directed toward specific social behavioral objectives(e.g medical care, education , '||'&'||' rehabilitation); and they are "Total institution" in which residents spend all of there time. The basic concepts and theories of environment-behavior studies are of direct relevance in understanding such social institutions. In this study, I have examined the relationships between waiting and the specific conditions of the hospital experience. More specifically, this is a study of visitors (outpatient) within the context of the hospital , and the physical setting designated for their use in the outpatient waiting room. Environment behavior studies, with its commitment to individual behavior and the physical environment might well be a particularly way by which a study of waiting rooms can demonstrate the power of this approach and its integrative among disciplines.

• 가정과삶의질연구
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• 제14권3호
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• pp.167-180
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• 1996

The purpose of this study was to examine the differences in the rural housewives' resourcs and demands financial practices and financial satisfaction according to family life cycle and to analyze the causal relationships among the components. For the latter purpose the conceptual framework based on the system theory was suggested. The results showed that first most variables were significantly different according to the family life cycle. Second except the establishing stage the conceptual framework was supported in all stages. Variables which affected financial practices and financial satisfaction varied with the family life cycle.

• Communications for Statistical Applications and Methods
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• 제8권1호
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• pp.193-207
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• 2001

When designing a test set, we need to consider constraints on items that are deemed important by item developers or test specialists. The constraints are essentially on the components of the test domain or abilities relevant to a given test set. And so if the test domain could be represented in a more refined form, test construction would be made in a more efficient way. We assume that relationships among task abilities are representable by a causal model and that the item response theory (IRT) is not fully available for them. In such a case we can not apply traditional item selection methods that are based on the IRT. In this paper, we use entropy as an uncertainty measure for making inferences on task abilities and developed an optimal item selection algorithm which reduces most the entropy of task abilities when items are selected from an item pool.

• 정보화연구
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• 제9권3호
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• pp.233-241
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• 2012

본 연구는 SBA AF의 효율적인 구축을 지원하기 위해 Architecture framework(AF)는 Enterprise Architecture(EA)를 운영하고 개발하기 위해 필요한 요소들을 정의하고 그 요소들간의 관계를 파악하기 위한 가이드라인이다. 정부 및 여러 분야에서는 자크만 프레임워크, DoDAF, TOGAF, FEAF와 TEAF 등을 비롯한 많 아키텍처 프레임워크를 사용하고 있다. DoDAF는 국방분야에서 EA의 개발을 지원하기 위해 사용되는 가장 대표적은 아키텍처 프레임워크이다. DoDAF는 8개의 viewpoint와 40개의 view로 구성되어 있다. 특정목저에 맞춰 아키텍처프레임워크를 개발하기 위하여서는 시스템 아키텍트는 일련의 view들 및 해당 view들을 모델링하기 위해 필요한 data들을 선택하여야 한다. 그러나 DoDAF에는 다수의 view 및 data들과 이 들 사이에는 복잡한 연관관계들이 존재한다. 따라서 특정목적을 달성하기 위한 아키텍처 프레임워크를 개발하기 위하여선 매우 많은 시간과 노력이 필요하다. 이러한 시스템 아키텍트의 노력을 줄이기 위하여 본 연구에서는 뷰들사이에 존재하는 순서나 이행 혹은 상호참조관계등을 고려한 ONT-DAF(DoDAF를 위한 온톨로지)를 개발하였다. 또한 단일 아키텍처 프레임워크 내에 존재하는 view와 data의 재사용성을 위하여 DoDAF 가이드라인에 통합적으로 존재하는 view-data의 정보들을 각각 분리하여 구축하였다. 이러한 ONT-DAF는 'viewpoint', 'data', 'view', 'expression method'와 'reference model'의 5개의 class와 'has data', 'has view', 'has related view' 등 총 16개의 properties로 구성되어 있으며 이를 활용하기 위하여 JESS engine과 SWRL rule을 활용한 총 4가지 유형의 8개의 룰을 사용하였다. 본 연구의 효과성을 입증하기 위하여 MoDAF에 존재하는 AV-1의 사례를 기반으로한 사례연구를 진행하였다. 그 결과 본 ONT-DAF를 활용하였을 경우 시스템 아키텍트가 초기에 얻을 수 있는 정보가 단순 view많이 아닌 해당 view와 연관된 view 및 그 들 사이에 존재하는 연관관계와 view를 모델링하기 위해 필요한 data를 포함한 정보들을 제공함으로써 ONT-DAF의 효과성을 입증하였다.

• 한국자기공명학회논문지
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• 제15권1호
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• pp.1-13
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• 2011

9Pbw2 is a 9-mer analog of protaetiamycine derived from the larvae of the beetle Protaetia brevitarsis. Previously, we designed four 9-mer peptide analogues to optimize the balance between the hydrophobicity and cationicity of the peptides and to increase bacterial cell selectivity. Among them, 9Pbw2 has high antibacterial activity without cytotoxicity. The results obtained in previous study suggest that the bactericidal action of 9Pbw2 may be attributed to the inhibition of the functions of intracellular components after penetration of the bacterial cell membrane. In order to understand structure-activity relationships, we determined the three-dimensional structure of 9Pbw2 in 200 mM DPC micelle by NMR spectroscopy. 9Pbw2 has one hydrophobic turn helix from $Trp^3$ to $Arg^8$ and positively charged residues at the N- and C-terminus. This result suggested that positively charged residues from position at the C-terminus in 9Pbw2 may be important for the primary binding to the negatively charged phospholipid head groups in bacterial cell membranes and hydrophobic residues in the middle portion face toward the acyl chains of the hydrophobic lipid in the bacterial cell membrane.

• 보건의료산업학회지
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• 제5권2호
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• pp.23-33
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• 2011

The purpose of this study was to investigate the effects of a medical institution's brand equity on the users' trust and brand loyalty and further on price premium with trust and brand loyalty as the parameters. For that purpose, a survey was taken among 448 people that used service at university hospitals, general hospitals, and hospital in Busan. The results show that such brand equity components as the associated image of the brand and perceived quality had significant influences on relationships with trust with the latter having the greatest influences. Brand recognition, associated image of the brand, and perceived quality all had significant impacts on brand loyalty. The associated image of the brand had the biggest impacts, being followed by perceived quality and brand recognition in the order. Trust had positive impacts on brand loyalty according to the survey results about the quality of relationships with consumers, which suggests that medical institutions can increase their users' brand loyalty and intention for re-use by promoting their trust in them. While brand loyalty turned out to have statistical significance on the users' price premium, trust did not.

• Plant Resources
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• 제5권3호
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• pp.196-201
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• 2002

This study was conducted to investigate the relationships between yearly variations of climatic elements and yearly variations of productivity in sesame. In addition, correlation coefficients among yield and yield components were estimated. The data of yield and yield components were investigated for 10 years from 1992 to 2001. The meteorological data gathered at the Yeosu Weather Station for the same period were used to find out the relationships between climatic elements and productivity. Yearly variation of the amount of precipitation in July and September were large with coefficients of variation(c.v.) of 64.59, 92.47%, respectively, but the variation of the average temperature in June and August were relative small. Yield and plant height greatly with c. v. of 26.24, 23.41 %, respectively, 1, 000 grain weights show more or less c.v. of 3.83% and length capsule setting show still less variation. Correlation coefficients between maximun temperature in period of cultivation(from June to September) and yield are positively significant at the level of 5.1 %, respectively. Correlation coefficients amount the plant height, length capsule setting, number of capsules per plant, weight of 1, 000 grains and seed yield were positively significant at the level of 1 %, respectively. Simple linear regression equations by the least square method are estimated for number of capsules per plant(Y$_1$) and the maximun temperature in August(X) as $Y_1$=10.1255+0.1725X, and for yield(Y$_2$) and the maximun temperature in August(X) as $Y_2$=21.6151 + 1.3724X.

• Journal of Oral Medicine and Pain
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• 제40권1호
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• pp.3-9
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• 2015

The etiopathogenesis of burning mouth syndrome (BMS) seems to be complex and many patients probably involves interactions among local, systemic, and/or psychological factors in the pathophysiologic mechanism. Although there are controversies over whether the psychological factor is a cause or a result of BMS, several studies have supported strong relationships between psychological factors and chronic pain. It has been suggested that somatic complaints from unfavorable life experiences may influence both individual personality and mood changes; however, initiation of BMS symptoms is not necessarily correlated with stressful life events despite their elevated psychological stress. If the psychological distress is not a causal factor of BMS, it seems that BMS patients may be particularly vulnerable to psychological problems, primarily depression, anxiety, and hostility due to the characteristic entities of BMS such as chronic persistent pain itself. It seems likely that both physiological and psychological factors play a role in causing, perpetuating and/or exacerbating BMS; therefore, both two components of the patient's symptoms must be addressed. The acceptance of psychological factors by the patient is often an important element of BMS, management. The evaluation of psychological and emotional status of BMS patient enables clinicians to recognize prolonged negative and subclinical factors which can complicate the management of pain or indirectly perpetuate other physical factors. This evaluation improves the doctor-patient relationships, motivation, and compliance through a correct understanding of the clinical problem. Appropriate emotional and psychological evaluation may be required prior to developing a treatment plan in order to gain the successful treatment outcome.