• Smart Structures and Systems
• /
• v.26 no.6
• /
• pp.703-720
• /
• 2020

This paper investigates the safety of the wind turbine blade against excessive deformation. For this purpose, the performance of the blade in the along-wind direction is improved by longitudinal stiffener made of shape memory alloy. The rationale behind the selection of this smart material is due to its ability to offer excellent thermo-mechanical behaviour at low strain. Here, Liang-Roger model is adopted for vibration control, and the super-elastic effects are utilised for blade stiffening. Turbulent wind fields are generated at the hub height using TurbSim and the corresponding loads are evaluated using blade element momentum theory. An efficient switching algorithm is developed along with performance curves that enable the designer to select an optimal mode of heating depending upon the operational scenario. Numerical results presented in this paper clearly demonstrate the performance envelope of the proposed stiffener and its influence on the reliability of the blade.

• Asia Marketing Journal
• /
• v.22 no.3
• /
• pp.87-105
• /
• 2020

With the development of Information Technology, customers require promptly higher quality products and services. Companies try to make newly digital marketing strategies, but there are no empirical researches on them. This article empirically presents a new perspective that companies can shape the customer decision journey ahead by coordinating customer experience. In this article, based on Elaborated Likelihood Model (ELM) theory, customer experience consists of the emotional or cognitive experience. We surveyed about 200 subjects (N = 217) in their 20s and 30s based on the International Music Industry Association's Music Listening 2019 report, then analyzed four different models (before personalization-cognitive experience, before personalization-emotional experience, after personalization- cognitive experience, after personalization-emotional experience) by JASP and R Studio. We conducted Structural Equation Model (SEM) and paired t-test. Personalization factors are about recommendation systems in Spotify. The results of survey represent that companies can shape the Customer Decision Journey (CDJ) ahead especially through enhance cognitive experience. It empirically proves Elaborated Likelihood Model (ELM). The conclusion can be drawn that 'pulling' customer experience can be a new marketing strategies in the digital era.

• Journal of Korean Clinical Health Science
• /
• v.10 no.1
• /
• pp.1578-1586
• /
• 2022

Purpose. The purpose of this study was to examine relationships among academic stress and academic self-efficacy on positive psychological capital and identify the factors that influence on positive psychological capital in the nursing students. Methods. The data were collected from 184 nursing students in the five colleges located Y and S city using self-reported questionnaires and Oct. 25 2020 to Nov. 5 2020. The data were analyzed by descriptive statistics, T-test, ANOVA, Pearson's correlation coefficient, and multiple regression with SPSS 20.0 program. Results. The result of positive psychological capital was found to be in a significant positive correlated with academic self-efficacy. the multiple regression indicates the Major satisfaction and academic self-efficacy 22.1%(F=11.4 P<.001) of positive psychological capital. Conclusions. Therefore, it is necessary to develop academic self-efficacy increase education program for strategy positive psychological capital in nursing students.

• Journal of Radiopharmaceuticals and Molecular Probes
• /
• v.6 no.2
• /
• pp.177-181
• /
• 2020

Dual-modality imaging strategy using near-infrared fluorescence (FLI) and photoacoustic imaging (PAI) demands a suitable probe to enable dual-modular signal production. Herein, we demonstrate a synthetic protocol of small molecular dye for dual-modular FLI and PAI. A condensation reaction between squaric acid and carboxypentyl benzoindolium, and followed by basic hydrolysis to give the benzoindole derived squaraine (BSQ) dye in 49% yield. Next, the carboxylic acid group of BSQ was further functionalized with N-hydroxysuccinimide or azide group for an efficient conjugation with a targeting biomolecule. BSQ showed a maximum fluorescent emission at around 680 nm and the photoacoustic signal reached a maximum intensity at 680-700 nm. Based on these results, we conclude that BSQ analogs will be useful probes for dual-modular (FLI/PAI) imaging studies in animal models.

• Asia pacific journal of information systems
• /
• v.30 no.2
• /
• pp.252-283
• /
• 2020

Online retail is a growing opportunity for retailers and consumers. Cross-buying provides companies with an opportunity to increase their revenue contributions from existing consumers. In many fields, especially in the service sector, cross-selling is an easier strategy to use relative to increasing revenue rather than acquiring new consumers. Website personalization has been a powerful indispensable tool for web-based companies and end users. Using the Mehrabian and Russell's Stimulus-Organism-Response framework, we experimentally examined how an online retailing merchant's environmental stimuli (S) arouses internal affective and cognitive states (O), that affect consumers' approach-avoidance behavior (R) in cross-buying and shopping cart abandonment in online transactions.

• IMMUNE NETWORK
• /
• v.20 no.1
• /
• pp.4.1-4.17
• /
• 2020

Tregs have a role in immunological tolerance and immune homeostasis by suppressing immune reactions, and its therapeutic potential is critical in autoimmune diseases and cancers. There have been multiple studies conducted on Tregs because of their roles in immune suppression and therapeutic potential. In tumor immunity, Tregs can promote the development and progression of tumors by preventing effective anti-tumor immune responses in tumor-bearing hosts. High infiltration of Tregs into tumor tissue results in poor survival in various types of cancer patients. Identifying factors specifically expressed in Tregs that affect the maintenance of stability and function of Tregs is important for understanding cancer pathogenesis and identifying therapeutic targets. Thus, manipulation of Tregs is a promising anticancer strategy, but finding markers for Treg-specific depletion and controlling these cells require fine-tuning and further research. Here, we discuss the role of Tregs in cancer and the development of Treg-targeted therapies to promote cancer immunotherapy.

• Korean Journal of Radiology
• /
• v.21 no.7
• /
• pp.851-858
• /
• 2020

Coronavirus disease 2019 (COVID-19) is a new infectious disease rapidly spreading around the world, raising global public health concerns. Radiological examinations play a crucial role in the early diagnosis and follow-up of COVID-19. Cross infection among patients and radiographers can occur in radiology departments due to the close and frequent contact of radiographers with confirmed or potentially infected patients in a relatively confined room during radiological workflow. This article outlines our experience in the emergency management procedure and infection control of the radiology department during the COVID-19 outbreak.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2020.07a
• /
• pp.510-512
• /
• 2020

In this paper, we reviewed the method on the codec-agnostic design of MPEG V-PCC. The codec-agnostic approach designed V-PCC can use any video codec for compression. Thus, adoption with other codecs beside HEVC has not been systematically discussed. Through the analysis of the design issues that related to MPEG EVC and JPEG. We provided a strategy on choosing and targeting different video codecs for V-PCC.

• Proceedings of the Korean Institute of Landscape Architecture Conference
• /
• 2020.06a
• /
• pp.95-95
• /
• 2020

• Proceedings of the KIPE Conference
• /
• 2020.08a
• /
• pp.308-309
• /
• 2020

본 논문은 추가적인 회로 없이 DVR 전원공급장치의 Hot-Swap 기능을 구현하는 방법을 제안한다. 기존에 사용하던 ORing Diode와 MOSFET의 추가 없이 LLC 컨버터 2차측 정류다이오드만의 바이어스 특성을 이용해 Hot-Swap 기능을 구현한다. 168W급 DVR 전원공급장치를 대상으로 제안한 회로의 타당성을 모의실험을 통해 입증한다.