Hydroforming is a forming technology in which a steel tube is fixed in a die and formed to fit a specified design shape by applying hydraulic pressure from inside the tube. In present study, the whole process of sub-frame side member development is presented by tube hydro-forming using steel material. At the part design stage, it requires feasibility study and process design aided by CAE (computer aided design) to confirm hydro-formability in details. Overall possibility of hydro-formable side member parts could be examined by cross sectional analyses. All the components is designed and formability is examined from the point of geometry and thinning. From the simulation results, the maximum thickness reduction rate is 55% after hydroforming. In order to improve this result, the feeding by 30 mm is applied to the both sides of the tube and the thickness reduction can be reduced from this management.

Due to a lack of the hoop action of lateral reinforcements the effective confining force in rectangular sections reduces compared to circular ones. Therefore, the stress-strain model obtained from the experimental data with circular sections overestimates the lateral confinement effect in rectangular sections, which evaluates seismic safety margin of overall structural system excessively. In this study experiments with laterally-confined square sections have been performed and the characteristic values composing stress-strain model have been analyzed. With introduction of section coefficients, in addition, the new unified stress-strain model applicable to square sections as well as circular ones has been proposed.

In order to avoid collapse of bridges in earthquakes bridge piers are generally designed to attain sufficient ductility. This full-ductility design method has merits for securing the seismic safety readily against strong earthquakes but, it has weakness of high cost design because of excessive safety margin. Recently, in many countries with high seismic technologies, the seismic design concept tends to shift from the collapse prevention design to the performance-based one which requires different performance (damage) levels according to the structural importance. In order to establish this performance-based design method the displacement ductility of confined concrete members should be evaluated quantitatively. And the stress-strain model of confined concrete is indispensible in evaluating displacement ductility. In this study, 6 test groups with different lateral reinforcement ratios were prepared. 10 same specimens with circular section for each group were tested to obtain more reliable test results. The characteristic values necessary for composing the stress-strain model were obtained from experiments. Based on these characteristic values the new stress-strain model modifying the Hoshikuma's one has been proposed.

1970년대 이후 한국의 빠른 경제성장 동안에 수로나 철도 등 많은 지중구조물들이 건설되었다. 1988년에 내진설계가 의무 화되었으나, 1988년 이전의 지중 구조물들은 내진설계가 반영되지 않았다. 따라서, 이러한 지중 구조물들은 지진이 일어났을 때 안전성을 확보하기 위해 효과적인 내진 보강방법이 필요하다. 그러한 이유로, 본 연구에서는 새롭게 개발된 보강재를 이 용한 RC 박스 지중 구조물 우각부 보강공법의 내진성능에 대하여 분석하였다. 이 공법은 박스구조물 우각부에 Pre-flexed member를 설치하여 외력에 저항력을 증대시키는 원리이다. 타당성을 검증하기 위해서 새로이 개발된 보강재와 기존의 보강 재를 실험과 유한요소해석으로 비교하였다. 유한요소모델에서 강재의 비선형 모델은 J2 Plasticity Model을 기초로 하고 콘 크리트는 CEB-FIP MODEL CODE 1990로 모델링되었다. 또한, 설계반영을 위한 박스 구조물과 보강재와의 합성률을 산정 하였다. 보강재와 박스구조물은 Tie에 의해 완전 부착된 상태의 연결조건 하에서 해석이 수행되었으며, 하중-변위곡선에서 실험과 유한요소해석의 결과가 서로 일치하였다.

The objective of this study was to propose motivation for the analysis of consumer’s purchasing behavior and willingness to pay for the new soymilk products in cooperative stores. We surveyed the purchasing behavior, willingness to purchase, willingness to pay, and impact factors on willingness to pay. The results indicated that most consumers drank soymilk more than once per week. The reasons for consuming soymilk were health, nutrition, and taste, in order. When purchasing soymilk, consumers considered environment-friendly, quality, country of origin, brand, and price, consecutively. Taste was also an essential quality factor. Thus, consumers showed some willingness to purchase new soymilk products. In addition, cooperative members considered environmental characteristics of raw material and improvement of preference for final product as more important than functionality or food additives. Differentiation of process and marketing strategies are required for the development of soymilk products for cooperative members.

Bridge inspection structures are the structure which is installed on the piers, abutments, and copings for the inspection and maintenance of substructure. In this study, the structural performance of the bridge inspection structures using aluminum members manufactured by extrusion process is evaluated. The bridge inspection structures can be installed regardless of the shape of concrete surface through the simple cutting process. The structural performance of bridge inspection structures is evaluated using FE analysis. Moreover, experimental studies are conducted for the estimation of the structural safety of the members for the design load.

본 연구는 빠르게 변화하는 미래사회를 대비하기 위해 중요성이 커지고 있는 진로교육의 안정적인 정 착과 발전을 위하여 학교교육뿐만 아니라 학원교육에서도 바람직한 진로교육이 이루어져야 함을 인식하 고, 학원구성원의 진로교육에 대한 인식과 요구도를 알아보는 것을 목적으로 하였다. 연구결과 첫째, 학원 구성원은 진로교육이 학생들의 ‘교육기회 탐색>일과 직업 이해>진로계획과 준비’ 등을 위해 학원에 도입 될 필요가 있다고 인식하는 반면, 자신의 교육능력은 낮게 인식하였다. 경영효과성은 ‘원생입시>이미지 개선>연속 수강’ 등 대체로 높았다. 둘째, 학원구성원은 학원에서 진로교육이 원활하게 이루어지기 위해 ‘학부모의 관심과 참여>학원장의 관심과 의지>강사의 진로교육 전문성 확보’ 등이 필요하고, 진로교육 활성화를 위해서는 ‘정기적인 진로· 진학 상담>학부모 대상 교육>전문기관과의 협력>학원 진로교육 프로그램 개발’ 등이 필요하다고 하였다. 진로교육 내용은 ‘자아이해>교육기회 탐색>진학 준비>일과 직업이해>진로계획과 준비>직업정보 탐색> 진로의사결정 능력개발>대인관계 및 의사소통>건강한 직업의식’ 순이었다. 셋째, 진로교육에 대한 인식과 요구도는 ‘광역시’와 ‘중소도시’가 ‘서울시’보다 높았고, 진로교육을 실시 하는 학원이, 진로교육에 대한 경험이 있는 구성원이 그렇지 않는 경우보다 높았다. 결론적으로 학원에서 진로교육이 바람직한 방향으로 이루어지기 위해서는 학원구성원, 학원장, 학부모, 정부의 관심과 지원이 필요하다.

목적 : 국내 작업치료(학)과의 지속적인 증가에 따른 교육품질인증의 필요성이 부각되고 있다. 본 연구는 국내 대학들의 세계작업치료사연맹(World Federation of Occupational Therapists; WFOT) 인증 확 대 및 국내 실정에 맞는 교육품질인증의 도입 필요성에 대한 인식도를 확인하기 위하여 진행되었다. 연구방법 : 2016년 1월 20일부터 4월 25일까지 메일을 통해 국내 작업치료(학)과에 소속된 모든 교수들 을 대상으로 설문지를 배포하였다. 설문지는 총 103부 회수되었으며 응답이 미비한 8부를 제외하고 총 95부를 분석에 활용하였다. 결과 : 연구결과 95명의 응답자 중 80명(84.2%)이 WFOT 인증평가가 필요하다고 응답하였으며 국내 자체의 교육품질인증에 대해서도 73명(76.8%)이 필요하다고 응답하였다. 또한 국내 자체의 작업치료 교육품질인증이 실시될 경우 응답자의 75.8%인 72명이 평가받을 의향이 있는 것으로 조사되었다. 결론 : 작업치료영역에서도 교육의 질을 확보하고 교육수요자에게 교육에 대한 신뢰를 부여하기 위해서 다양한 잣대의 교육품질평가가 필요하다. 합리적인 평가기준의 확립과 적용을 통하여 국내 모든 대학의 교육의 질을 높이고, 작업치료사 면허를 취득한 신입 작업치료사의 직무수행 능력을 신뢰할 수 있는 풍토를 조성해야 할 것이다.

In this paper, the full-size structural performance test for a lightweight soundproof tunnel composed of partitioned pipe truss members is carried out to investigate the structural performance. In addition, a nonlinear structural analysis of the same finite element model as the full-size testing model is performed to compare the test result. The test and analysis results showed that the lightweight soundproof tunnel ensures the structural safety against wind loads, snow loads and load combinations. As a result, the full-size test and analysis results m

In the actual research fields, the studies for applications of 180 MPa ultra-high-performance fiber reinforced composite (UHFRCC) to compressive members are limited due to its very high compressive strength. In this study, in order to find basic research data for the design specification of UHPFRCC compressive members, a series of draft experiments, including short columns with square and circular sections, were performed and its failure modes and behaviors were assessed.

The purpose of this study is to improve the previous damage evaluation model for RC members which is proposed by Igarashi[1] in 2010.The previous model was not confirmed by enough data of damage such as, residual crack length, width and area for exfoliation of concrete, etc. In addition, validation of the model is still insufficient. Therefore, experiment of a real-scale RC structure and experiment of RC columns using the high-strength concrete were conducted to gather the data of damage in RC members. The investigation has been conducted gathering the data not only additional experiments data but also existing data for modification of damage evaluation model. It has been investigated on changing damage in RC due to axial force ratio, shear reinforcement and shear span ratio. As a result, several problems were founded in the previous model, such as, hinge length(lp), spacing of flexural crack(Sav,f), total width of flexural cracks regulated by maximum width of flexural crack(nf) and total width of shear cracks regulated by maximum width of shear crack(ns). New model is proposed and evaluated the damage properly.

이 논문은 화재에 노출된 철근콘크리트 구조에 대한 수치해석 모델을 제시하고, 기존의 자료 및 설계 규준과의 비교를 통해 구조물의 설계 시 고려 사항에 대해 제안하고 있다. 수치해석은 비정상 열전달 해석과 비선형 구조해석의 두 단계로 수행되며, 비정상 열전달 해석을 통해서 얻어진 화재시간에 따른 단면 온도분포를 바탕으로 비선형 구조해석하여 부재의 상태에 대한 정보를 얻게 된다. 이때, 철근콘크리트의 재료모델을 화재진행상태(Under-Fire)와 화재종료 후 냉각상태(After-Cooling)로 나뉘어 해석수행하여 각각의 재료상태에 따른 거동의 변화를 살펴본다. 해석된 결과는 여러 구조물에 대해 기존의 실험결과와 비교하여 검증하고, 설계 규준과의 비교를 통해 화재 시 구조물의 안전성에 대해 고찰하였다.

이 논문에서는 케이블교량 설계기준의 설계하중조합에 대한 신뢰도분석을 수행하였다. 설계기준에서 정의한 하중계수와 저항계수를 적용하여 설계된 실제 케이블교량을 대상으로 주 부재별 통계특성과 설계지배 하중조합을 분석하였다. 신뢰도분석을 통하여 하중조합별로 설정된 목표신뢰도지수를 확보됨을 확인하였고, 교량의 중요도를 상향할 수 있는 저항수정계수의 적용성을 검토하였다. 설계변수들이 신뢰도지수에 미치는 민감도 분석을 통하여 케이블의 신뢰도에 중요한 영향을 주는 요소를 분석하였다. 이를 통하여 설계기준의 안전계수들을 적용한 설계를 통하여 케이블교량의 목표신뢰도지수를 확보할 수 있음을 확인하였다.

One of the longstanding goals of both managers and researchers has been to understand the characteristics of effective salespeople. Selling orientation (SO), one of the general approaches of salespeople, has also been referred to in several studies as selling behaviors (Saxe and Weitz 1982; Brown et al. 1992; Jaramillo et al. 2007). SO is the degree to which salespeople place their own needs and/or the needs of the firm before those of their customers by attempting to sell as much as possible to customers. This is exhibited when salespeople are primarily engaged in selling activities that emphasize “getting the sale” (Schultz and Good 2000; Boles et al. 2001). Few researchers focus their attention on SO as one of the sales approaches enhancing sales performance and previous studies generally discuss SO as a factor negatively correlated with customer orientation (CO) (Saxe and Weitz 1982; Brown et al. 1992). These studies suggest SO should be controlled to encourage CO. However, Schwepker (2003) shows in his overviews of recent research that there is not a general consensus on the relationship between SO and individual sales performance. In fact, some studies indicate that SO increases individual sales performance, while others find that it is not an influential factor (e.g. Goff et al. 1997; Boles et al. 2001; Wachnel et al. 2009). Salespeople are required to adopt long-term perspectives as well as short-term sales results simultaneously in a competitive market; thus, it is meaningful to explore whether SO, as an aggressive sales approach, improves individual sales performance and whether SO can be used as an effective organizational indicator. Some studies, on the other hand, argue that the relationship between SO and individual performance is affected by moderating factors, such as differences in performance measurement (subjective or objective) (Jaramillo et al. 2007) and the sales skill level salespeople possess (Wachner et al. 2009). For example, Wachner et al. (2009) tested the moderating impact of three selling skills: interpersonal skills, salesmanship skills, and technical skills. These studies show that various external and individual factors can affect the relationship between SO and performance. Unfortunately, the impact of internal factors, such as integration with other functional members of the organization, has largely ignored. However, integration between salespeople and a variety of functional members is crucial for exchanging information and activating organizational learning (Rouizes et al. 2005), which may affect sales strategy. Indeed, salespeople, as boundary spanners, cooperate with other functional members and provide the firm with external market information (Griffin and Hauser 1990; Singh 1998; Krohmer et al. 2002). On the other hand, salespeople also receive information and support regarding new products and product delivery from other functional members, which benefits individuals’ sales performance. Our study, therefore, aims to examine the performance impact of SO at the level of the individual salesperson. In addition, we test for the moderating effect of integration with other functional members. We use the term integration as proposed by Kahn (2001), in which levels of integration are gauged by the extent of information exchange and personal interaction, and argue that integration, as an option internally available to salespeople, will increase the effectiveness of a sales approach. The indices we use to judge individual sales performance are as follows: the sales figures achieved, the degree to which the salesperson commits to the target sales figure, the number of new customers found, and the level of task innovation displayed in comparison with other members of the same sales team. SO is usually seen as a short-term sales approach. While pure SO cannot have a positive effect on customer loyalty or satisfaction levels (Boles et al. 2001; Schwepker 2003), it is often the most effective short-term selling method. In fact, Wachner et al. (2009) report that SO directly increased individual sales performance in the B to B market settings. Moreover, Boles et al. (2001) reported that SO is not harmful to relationships with customers for in-store retail settings because customers expect salespeople to engage in selling-oriented behavior to some degree. Schwepker (2003) argues that salespeople are more likely to utilize SO in an effort to meet the demands and goals placed on them when managements use the outcome-based measurements (e.g. financial performance) to evaluate their performance. This may mean that when salespeople take a more strongly selling-oriented approach, they increase their attention on selling itself and find effective methods for increasing performance. These discussions show that SO is influential in increasing sales performance. Our first hypothesis, therefore, is: H1. SO positively affects individual sales performance. Meunier-FitzHugh and Piercy (2007) emphasize that the selling of products and services is not exclusive to marketing or sales. Integration between different functional members is vital to improved customer satisfaction and product development performance (Kahn 2001). In addition, Kahn and Mentzer (1998) show that integration between different functional members has a positive influence on performance in terms of department success, overall firm performance and new product development. The authors explain that the information exchange intrinsic to integration allows members to reduce uncertainty, thereby facilitating different types of performance. By transmitting information and interacting with members who work in complementary functions, salespeople are more likely to increase their product knowledge and control time schedules. Accordingly, we expect integration with other functional members to positively impact individual performance. According to Storbacka et al. (2009), sales can play an important role in new product development, which also increases opportunities to broaden customer relationships and modify sales strategies. We argue that when integration is coupled with SO, individual performance improves because integration modifies SO’s aggressive behaviors into an adaptive selling style. Adaptive selling is considered “the altering of sales behaviors during a customer interaction or across customer interactions based on perceived information about the nature of the selling situation” (Weitz et al. 1986, p. 175). Franke and Park (2006) argue that the benefits of adaptive selling behaviors are likely to outweigh the costs of gathering and applying information to specific situations, thereby improving overall individual sales performance. Thus, if salespeople integrate with other functional members in the process of selling products and providing customized service according to customer needs, we expect that the relationship between SO and individual performance will be stronger. On the other hand, role ambiguity of salespeople may be reduced by high SO, which stimulate salespeople to put higher priorities on selling and short-term purpose (Tubre and Collins, 2000; Wachner et al. 2009). Low role ambiguity will make functional integration efficient and effective since allocation and coordination regarding functional roles cost less compared with the situation where the roles are ambiguous. Therefore, when salespeople have higher SO, integration produces more results in shorter time. Hence, on the basis of this reasoning, we hypothesize that: H2. Integration positively affects individual sales performance. H3. The positive relationship between SO and individual sales performance is stronger when salespeople are more integrated with other functional members. 382 questionnaires were handed out to a firm and 186 salespeople including the sales managers filled in the questionnaires. This company’s services and products are related to real estate, car insurance and financial insurance. We chose this particular company because the salespeople are encouraged to use SO approaches and generally integrate with other functional members. Based on Wachner et al. (2009), SO was measured with a three-item indicator that included the following items: “high sales performance is more important than how to accomplish it,” “I try to focus attention on the degree of sales performance compared with others,” and “when a company appraises salespeople, only financial performance has to be considered.” These measures were modified from those used in Wachner et al. (2009) to reflect SO’s short-term transactional manner and emphasis on high financial performance. In addition, the integration with other functional members referred to in Kahn and Mentzer (1998) was also measured using an indicator with the following items: “I frequently exchanges information with other functional members,” “I am actively gathering information from colleagues with different functions,” “critical information is shared between colleagues with different functions,” and “the integration between sales and other functions is possible.” We assessed the validity and dimensionality of our reflective constructs by performing a confirmatory factor analysis (CFA). Our CFA model contains SO (three items, α= .730), integration (four items, α= .839), and performance (four items, α = .826). The model shows an acceptable fit with the data with a χ2 of 153.481 (df = 41, p< .001), a comparative fit index (CFI) of .926, AGFI of 0.846 and a root mean square error of approximation (RMSEA) of .10. We conducted a moderated hierarchical regression analysis to test our hypotheses. Regression results have been provided in Table 1. After mean-centering the interaction variables, multicollinearity was irrelevant because the VIF of the multicollinearity statistic was low level. Model 1 includes control variables and the effects of SO and integration. Model 1 reveals a positive effect of selling orientation (β= .201, p< .01) and integration (β= .358, p< .001) on performance. In Model 2, interaction terms were added. The Model 2 results indicate that the interaction effect between SO and integration on performance is positive and significant (β= .142, p< .05) supporting H3. Post hoc analysis also confirms that integration moderates SO to increase performance. Specifically, examination of the simple regression lines show that there is only an effect of the SO on performance when the salesperson’s integration level is high (t= 3.60, p< .00), but is not significant when integration level is low (t= 1.085, ns). Overall, our results indicate that SO and integration have an important impact on individual sales performance. In addition, as shown by Fig. 1, SO affects individual performance more positively when salespeople integrate more fully with other functional members. These results highlight the tact that, when they co-exist, SO and integration between different functional members contributes to increased individual sales performance. As one of the components of market orientation, integration with other functional members prompts salespeople to consider customer satisfaction. By exchanging knowledge and contributing to internal information flow, integration allows salespeople to develop SO into an adaptive selling approach, thereby increasing sales performance. On the other hand, because high SO results in salespeople using their time and efforts more effectively for performance with integration than low SO, sales performance increases. From a theoretical perspective, the findings we report here taking into account the moderating effects of integration, present a new understanding of the relationship between SO and individual performance. Moreover, our findings have managerial implications. Although SO has a positive effect on individual performance, SO also presents considerable challenges, such as decreasing customer loyalty and endangering salespeople’s job satisfaction (Boles et al. 2001; Schwepker 2003). As a result, the relationship between SO and salespeople’s individual performance requires more discussion and should be considered carefully. Our study shows that sales management could potentially increase sales performance by using cross function teams and setting financial goals, which would simultaneously encourage integration as well as SO (Rouziès et al. 2005).

Fiber reinforced polymeric plastic (FRP) materials have many advantages over conventional structural materials, i.e., high specific strength and stiffness, high corrosion resistance, right weight, etc. Among the various manufacturing methods, pultrusion process is one of the best choices for the mass production of structural plastic members. Since the major reinforcing fibers are placed along the axial direction of the member, this material is usually considered as an orthotropic material. However, pultruded FRP (PFRP) structural members have low modulus of elasticity and are composed of orthotropic thin plate components the members are prone to buckle. Therefore, stability is an important issue in the design of the pultruded FRP structural members. Many researchers have conducted related studies to publish the design method of FRP structures and recently, referred to the previous researches, pre-standard for LRFD of pultruded FRP structures is presented. In this paper, the accuracy and suitability of design equation for the local buckling strength of pultruded FRP I-shape compression members presented by ASCE are estimated. In the estimation, we compared the results obtained by design equation, closed-form solution, and experiments conducted by previous researches.

본 논문에서는 범용 유한요소프로그램 ANSYS와 ABAQUS를 이용하여 냉간성형강으로 조립한 조립기둥의 전체좌굴과 뒤틀림좌굴에 대한 비선형해석을 위한 모델링 기법을 소개한다. 냉간성형강의 경우 두께가 얇아서 국부좌굴 등 비선형거동을 보이기 때문에 좌굴에 대한 해석에 매우 섬세한 모델링이 필요하다. ANSYS의 내연적정적모델링에 의한 해석은 좌굴 극한점 부근에서 수렴의 문제를 발생하였지만, ABAQUS의 외연적동적모델링의 경우에는 좌굴 및 좌굴이후의 부재 거동에 대해서 안정적인 결과를 제공하였다. 또한 수치해석 결과는 좌굴실험을 통해 얻어진 축내력에 비해 높은 내력을 보여주고 있다. 이는 실험과정에서 발생하는 편심에 의한 영향으로서 수치해석에 의한 좌굴내력에 적정한 보정치의 적용이 필요하며 본논문에서는 기존 실험데이터와의 비교를 통해 0.88의 값을 제시한다.

Pultruded FRP can be regarded as an orthotropic material due to its manufacturing process that pull-out fibers impregnated with polymeric resin, which is suitable to produce structural member with unlimited lengths of reinforced polymer structural shapes with a various shape of cross-section. However, fiber distribution in the cross-section is not uniform because of the characteristics of pultrusion process. Therefore, random fiber distribution causes the difference of the modulus of elasticity throughout the cross-section. In this paper, closed-form local buckling analysis is conducted on the pultruded FRP I-shape compression members. The mechanical properties used to analytical investigations are obtained from the coupon test. The coupon test specimens are taken from the pultruded FRP I-shape member. Moreover, the local buckling tests of pultruded FRP I-shape members are conducted and test results are compared with the analytical results.

The floating PV generation structure installed on the surface of water has been recently issued as a representative items for the low carbon and green growth campaign. Moreover, the studies and developments for the structure and construction improvements of floating PV generation structure have been in progress. For example, in the previous research, the floating PV generation structure consisted of pultruded FRP and SMC FRP members is suggested. In this study, we conduct the analytical and experimental studies for estimating the structural characteristics of SMC FRP vertical members. From the analytical and experimental results, it is found that SMC FRP vertical members used for floating PV generation structure have sufficient structural safety and stability.