This study is about the evaluation for shock-proof performance of the system, elastically support the low accumulator of the naval artillery against underwater explosion, using DDAM. For the evaluation, the shock analysis procedure using DDAM, supported by MSC/NASTRAN, was briefly described. In addition, in order to perform the shock analysis, the elastic support system was modeled as a finite element. The shock analysis of the elastic support system was performed by selecting the analysis frequency range so that reliable results can be obtained. Finally, the shock-proof performance of the system was evaluated by comparing the shock analysis results with the properties of the elastic support system.

노후 구조물의 동적 특성 평가를 위해 대표적인 접촉식 센서인 LVDT와 가속도계를 활용한다. 전통 적인 센서의 데이터 신뢰성은 높지만, 작동 원리로 인하여 대상 구조물의 물리적 접근과 센서의 설치 가 필요하다. 조밀한 센서 설치를 위해선 많은 수의 센서와 데이터 수집장치도 추가적으로 필요하다. 이런 단점을 보완하고자 비접촉식 센서의 개발이 활발히 진행 중이며, 특히 비전센서를 활용한 동적 변위 측정에 관한 연구 및 개발에 많은 진척이 있다. 비전센서를 활용한 동적 변위 측정 시스템은 내 적 파라미터 및 외적 환경조건에 따라 측정 정확도가 크게 변화한다. 주된 내적 파라미터로 영상장비 의 공간분해능은 이미지 센서의 물리적 크리와 촬영거리의 증가 혹은 관심영역이 작아짐에 따라 영향 을 많이 받는다. 외적 환경조건으로 저조도 환경에서 타겟의 밝기차이가 줄어들어 이미지 프로세싱 과 정에서 불리한 조건이며, 이는 동적 변위 측정 정확도 저하로 이어진다. 본 연구에서 저조도 환경에서 비전센서의 운용거리 한계를 초해상화를 적용하여 극복하고자 하며, 인공적 및 자연적 타겟에 대한 동 적 변위 측정 성능을 비교 분석하였다. 동적 변위 측정 실내 실험을 위해 저조도 조건에서 3층 전단 구조물을 9Hz로 가진하였다. 동시에 Sony사의 DSC-100M7 카메라를 활용하여 조화진동으로 인해 발생되는 각층의 변위를 FHD화질 120FPS로 촬영하였고 측정 정확도 비교 분석을 각층의 LVDT 측 정값으로 진행하였다. 촬영거리를 10m를 기준으로 10m씩 증가하면서 최대 40m까지 변위 값을 측정 하였으며, 공간분해능 증가를 위해 GAN기반 초해상화 모델인 RealSR을 적용시켰다. 초해상화를 활용 하여 동적변위를 측정한 결과 저조도 환경에서도 비전센서의 운용 거리가 증가함을 확인할 수 있었으 며, 동시에 변위 측정 정확도도 함께 상승하는 것을 보여줬다.

The pharmaceutical industry is an industry that provides medicines related to the health and life of the people. The pharmaceutical industry is a traditional regulation industry with the characteristics of R&D(Research and Development), purchasing, manufacturing, distribution and consumption under strict government management. Until now, pharmaceutical companies have continued to make efforts to maintain competitiveness through patent management, new product development, and marketing. However, industries are rapidly changing, including rising costs for developing new products and expanding generic markets. As these changes and uncertainties in the management environment increase, efforts are required to improve the competitiveness of the pharmaceutical industry from a new perspective. In this study, we intend to examine the impact of SCM(Supply Chain Management) dynamic capability of pharmaceutical companies on corporate performance through partnerships to respond to market changes and uncertainties. It was determined that the agility, visibility and flexibility that constitutes the SCM dynamic capabilities would affect the performance of pharmaceutical companies. In this study, the importance of SCM dynamic capabilities and cooperative relationships was identified through surveys by SCM managers of pharmaceutical companies. Consequently, in the pharmaceutical industry, which is a regulatory industry, we have identified that SCM dynamic capabilities and cooperative relationships with partner companies have a significant impact on corporate performance.

최근 국내 지진 발생 빈도 및 강도가 증가함에 따라 지진 발생시 건물 주요 구조부에 대해서는 내진설계 및 내진 구조기술이 적용되어 지진에 대비하고 있으나, 비구조 요소인 커튼월과 창호에 대해서는 내진에 대비한 충분한 고려가 이루어지지 못하고 있다. 본 연구에서는 동적 내진성능 기준을 만족할 수 있는 커튼월을 개발하기 위해 동적 지진파 인가 시 커튼월이 파손 없이 대응 가능한 지진 변위 대응 패스너를 적용하여 동적 내진성능실험을 통해 이를 규명하고자 한다. 동적 내진성능실험을 수행한 결과, 본 연구에서 제시한 3축 이동형 패스너를 활용한 커튼월이 실제 지진파에 대응 가능하다는 것을 확인할 수 있었다.

중·저층 구조물의 구조물 건전도 모니터링을 위해 아두이노 기반 가속도 센서를 적용하기 앞서 아두이노 기반의 저가형 가속도 센서의 진동 계측 성능을 확인하고, 그 한계를 명확히 하고자 한다. 가진 장치에 상용 가속도 센서와 저가형 가속도 센서를 설치 하고 다양한 Case의 Sin파를 가진하여 그 응답을 계측하였다. 응답 결과는 상용 가속도 센서를 기준으로 저가형 센서의 계측 정확성을 비교하였다. 가진 진동수 추정에 있어서 대부분의 Case에서 유사한 결과를 나타내었으나 Magnitude 추정 결과에 있어서 가진 진폭이 낮은 1Hz/100mm이하의 경우 Magnitude 추정값이 부정확하게 나타났다. 이후 모든 Case에서는 저가형 가속도 센서와 상용 가속도 센서의 Magnitude 추정 결과가 유사하게 나타났다. 이러한 실험 결과를 바탕으로 아두이노 기반 저가형 가속도센서는 대체적으로 동적 계측의 유효성이 있다고 판단된다.

본 연구는 환경역동성이 기업의 동적역량과 운영역량의 변화와 혁신성과에 미치는 영향을 실증하였다. 이를 위하여 기업역량을 동적역량과 운영역량의 계층적 구조로 정의하고 계량화를 위하여 각 역량의 개념과 정의를 정리하였다. 동적역량, 운영역량, 혁신성과 및 환경역동성에 대한 선행연구를 통해 5개의 연구가설을 설정하였고, 우리나라 제조기업 300개 기업의 표본을 대상으로 가설을 검증하였다. 그 결과, 동적역량은 운영역량에 정(+)의 영향을 미치며 운영역량도 혁신성과에 정(+)의 영향을 미치는 것으로 나타났다. 환경역동성이 높은 기업군은 운영역량이 급진적 혁신에 정(+)의 영향을 주며, 반대로 환경역동성이 낮은 기업군은 운영역량이 점진적 혁신에 정(+)의 영향을 주는 것으로 나타났다. 그러나 환경역동성은 동적역량이 운영역량에 미치는 영향에 조절효과가 유의하지 않은 것으로 나타났다. 본 연구는 동적역량과 운영역량을 프로세스로 구체화하여 기업의 동적역량 특성을 실증적으로 분석할 수 있는 기반을 마련하고, 환경변화가 기업역량과 혁신성과에 미치는 영향을 실증 한 것에 의의가 있다. 또한 급변하는 환경 속에서 기업이 경쟁우위를 지속하기 위해서 어떻게 역량을 변화해야 하는지에 대한 시사점을 제시한 것에도 의의가 있다.

Background: The hip muscle plays various roles. Several types of functional performance tests are used for the assessment of patients with various lower extremity injuries. Hip muscle functions are important to test the performance of maintaining the spine, pelvic, and leg during bridging exercise. We designed a novel functional performance test tool, which we named close kinetic chain dynamic lower extremity stability (CKCLE) test to assess hip muscle functions. Objects: The purpose of this study was to determine the relationship between CKCLE test and hip extensor, external rotator, and abductor strengths. Methods: Twenty-two subjects were recruited in the present study (13 males and 9 females). The hip extensor, external rotator, and abductor muscle strengths were measured using a Smart KEMA strength sensor. When the examiner said “Go”, the subject performed the CKCLE test by moving one leg from the floor and touching the opposite knee and then return to the floor while maintaining the bridging position. The subjects attempted as many “touches” as possible in the allotted time (20 seconds) during the maximal tests. The correlation between the hip muscle (extensor, external rotator, and abductor) strength of the supporting leg and the number of CKCLE tests performed in 20 seconds was determined using the Pearson correlation. Results: Hip extensor (r = 0.626, p < 0.05), hip external rotator (r = 0.616, p < 0.05), and hip abductor muscle strengths (r = 0.475, p < 0.05) positively correlated with the number of CKCLE tests performed. Conclusion: We designed a CKCLE test and found that performance in the test correlated with hip extensor, external rotator, and abductor muscle strengths. The result suggests that the CKCLE test can be applied as a performance test to assess the functions of the hip extensor, external rotator, and hip abductor muscles.

In this research, a simulation program is developed in order to investigate non steady-state cornering performance of 6WD/6WS special-purpose vehicles. 6WD vehicles are believed to have good performance on off-the-road maneuvering and to have fail-safe capabilities. But the cornering performances of 6WS vehicles are not well understood in the related literature. In this study, 6WD/6WS vehicles are modeled as a 18 DOF system which includes non-linear vehicle dynamics, tire models, and kinematic effects. Then the vehicle model is constructed into a simulation program using the MATLAB/SIMULINK so that input/output and vehicle parameters can be changed easily with the modulated approach. Cornering performance of the 6WS vehicle is analyzed for brake steering and pivoting, respectively. Simulation results show that cornering performance depends on the middle-wheel steering as well as front/rear wheel steering. In addition, a new 6WS control law is proposed in order to minimize the sideslip angle. Lane change simulation results demonstrate the advantage of 6WS vehicles with the proposed control law.

In this paper, we study the applicability of Tuned Mass Damper(TMD) to improve seismic performance of piping system under earthquake loading. For this purpose, a mode analysis of the target pipeline is performed, and TMD installation locations are selected as important modes with relatively large mass participation ratio in each direction. In order to design the TMD at selected positions, each corresponding mode is replaced with a SDOF damped model, and accordingly the corresponding pipeline is converted into a 2-DOF system by considering the TMD as a SDOF damped model. Then, optimal design values of the TMD, which can minimize the dynamic amplification factor of the transformed 2-DOF system, are derived through GA optimization method. The proposed TMD design values are applied to the pipeline numerical model to analyze seismic performance with and without TMD installation. As a result of numerical analyses, it is confirmed that the directional acceleration responses, the maximum normal stresses and directional reaction forces of the pipeline system are reduced, quite a lot. The results of this study are expected to be used as basic information with respect to the improvement of the seismic performance of the piping system in the future.

본 연구는 간편화된 소성 접선 곡선을 적용하여 노측용 가드레일 시스템의 충격 성능을 평가하기 위한 유한요소 충돌해석을 수행하였다. 충돌해석은 Cowper-Symond 모델을 적용하여 변형률 속도 영향에 대한 결과의 정확성을 향상시켰다. 수치 해석 결과는 소성 접선 곡선을 고려한 향상된 모델의 중요성을 보여준다. 다양한 매개변수에 대한 해석 결과는 서로 다른 모델에 대하여 동적 응답 및 탑승자 안전지수를 중심으로 비교 검증하여 도출하였다.

With the development of artificial intelligence, large data and cloud computing technologies, the global trend of industrie 4.0 is coming. The key factor is IT convergence of software and hardware. From large corporations to small and medium-sized enterprises, IT companies must realize internationalization as a survival strategy effectively in the global market-based economy (Wilden & Gudergan, 2015). Recently, dynamic capability is the ultimate source of competitive advantage. Dynamic capability is the ability to integrate, relocate, and form new capabilities of an organization's resources to adapt to changing environments (Barreto, 2010; Fallon-Byrne & Harney, 2017; Teece, 2012). On the other hand, entrepreneurship is closely related to various factors such as dynamic adaptation of company, adaptation, response, and innovation to changing environments (Arend, 2013). From this viewpoint, the aim of this paper is to examine the effect of entrepreneurship on firm's dynamic capabilities and the impact of dynamic capability on business performance (Etemad, 2004; Laukkanen, Nagy et al. 2013). In addition, we explore whether the effects vary across company type, namely those of soft and hardware companies. In this model, dynamic capabilities consist of three sub-dimensions; opportunity exploration capability (DC_O), resource acquisition capability (DC_A), and resource reconfiguration capability (DC_R) (Barreto, 2010; Knight, 2000; Teece, 2007). Also, business performance is divided into financial (FP) and non-financial performance (NFP). Incorporating entrepreneurship and dynamic capabilities in the same model, the findings of this study will contribute to give a more comprehensive view by showing the entrepreneurship and dynamic capabilities mays explain business performance. For this purpose, this study examines the structural relationship between entrepreneurship, dynamic capability, and business performance and the moderating role of company type. The data were collected from 209 CEOs of soft and hardware SMEs and analyzed with SPSS 21.0 / WIN and SmartPLS 3.0 statistical package. Based on previous studies, we propose following hypotheses. H1: Entrepreneurship has a positive effect on dynamic capabilities. H1-1: Entrepreneurship has a positive effect on opportunity exploration capability (DC_O) of dynamic capabilities. H1-2: Entrepreneurship has a positive effect on resource acquisition capability (DC_A) of dynamic capabilities. H1-3: Entrepreneurship has a positive effect on resource reconfiguration capability (DC_R) of dynamic capabilities. H2: Dynamic capabilities have a positive effect on business performance. H2-1: Dynamic capabilities have positive effects on financial performance. H2-2: Dynamic capabilities have positive effects on non-financial performance. Figure 1 displays the results of analysis of structural equation modeling (SEM). The findings and summaries are as follows. First, entrepreneurship has a positive effect on DC_O, DC_A, and DC_R. DC_O has a positive effect on NFP, but does not on FP. Second, DC_A has a positive effect on both FP and NFP(Arend, 2014; Wang and Ahmed 2007). Third, the moderating test shows that the relationships between entrepreneurship and dynamic capabilities, and DC_R and FP and NFP are significantly different between across soft and hardware SMEs. This study proposed and examined the entrepreneurship – dynamic capability – business performance framework in SMEs IT context. The findings of this study reveal that entrepreneurship contributes to enhance dynamic capabilities, and in turn increase financial and non-financial performance (Soriano& Dobon, 2009). More importantly, this study integrates entrepreneurship theory and resource-based view and shows that venture firm’s business performance will be maximized when CEOs have a high entrepreneurship and build dynamic capabilities. The findings also shows that in particular, it is very noteworthy that non-financial performance is enhanced by dynamic capabilities. In summary, this study shows that SMEs' entrepreneurship and dynamic capabilities can increase the business performance of companies as the IT industry is fiercely competing with domestic companies as well as international companies (Amazon, IBM, etc.).

This research paper examines the role of adaptive capability and absorptive capability in the development of digital marketing capability that, in turn, influences the firm performance. The results reveal that both adaptive and absorptive capabilities have a positive influence on digital marketing capability that positively contributes to customer relationship, new product and financial performance of the firm. The adoption of new digital technologies such as smart products, the Internet of Things (IoT), Artificial Intelligence, and machine learning will change markets, competitive landscapes, business models and consumer behaviors, new thinking about marketing capabilities becoming critical to succeed in today complex environment (Day, 2011; Kannan & Li, 2017). To remain competitive and survive, organizations have to develop new marketing capabilities to harness the potential of these technologies in supporting marketing functions and processes (Trainor, Rapp, Beitelspacher & Schillewaert, 2011). Despite the rapid diffusion of digital technologies in business practice, only few previous researches was focused on theoretical and empirical aspects of marketing capabilities needed in digital-empowered environment. To fill this knowledge gap, we develop the digital marketing capability construct, and explore its antecedents and consequences on performance.

The dynamic capabilities of sensing market signals, creating new opportunities and reconfiguring resources and capabilities to new opportunities in a rapidly changing economic environment determines the competitiveness of the enterprise to create added value and survival. This study conceptualized a two-stage performance measurement framework based on the casual model of resource (input)-process-performance (output). We have developed a ‘Process capability index’ that reflect the dynamic capabilities factors as a key intermediary product linking resource inputs and performance outputs in enterprise performance measurement. The process capability index consists of four elements : manpower (level of human resource), operation productivity, structure and risk management. The DEA (Data Envelopment Analysis) model was applied to the developed performance indicators to analyze the branch office performance of a telecom company. Process capability efficiency (stage 1) uses resource inputs to reach a certain level of process capabilities. In performance result efficiency (stage 2), the process capabilities are used to generate sales revenues and subscribers. The two-stage DEA model derives intermediate output values that optimize the individual stages simultaneously. Some branch offices in the telecom company have focused on process capability efficiency or some other branch offices focused on performance result efficiency. Positioning map using two-stage efficiency decomposition and benchmarking can help identify the sources of inefficiencies and visualize strategic directions for performance optimization. Applications of two-stage DEA in conjunction with the case study that are meaningfully used in performance measurement areas have been scarce. In particular, this paper has the contribution to present a new performance measurement model considering the organization theory, the dynamic capabilities.

In order for the probe to perform ocean exploration and survey research, it is necessary to adjust the position of the ship as desired by dynamic positioning system. The dynamic positioning system of T/S NARA is applied to K-POS dynamic positioning system of Kongsberg, which makes maintaining the ship's position, changing position and heading control possible. T/S NARA is not capable of dynamic positioning if one or more propulsive forces are lost with DP Level One. However, it is predicted that dynamic positioning can be achieved even at the time of missing one thrust in a good sea condition. Therefore, we want to analyze the effect of each propulsion on the performance of dynamic position system. When one of the bow thruster and azimuth thrusters lost their propulsion, maintaining the ship's position, changing position and heading control performance were compared and analyzed. If the situation occurred disable from using the bow thruster, they can not maintain ship's position. Azimuth thruster was influential for the ship's position control and bow thruster was influential in heading control. The excellent dynamic positioning performance can be achieved, considering the propulsion power that will have a impact on each situation in the future.