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Wang Junjie,Yun Jinfeng,Lv Shijie,Wang Hongmei 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
39 accessions of sickle alfalfa (Medicago falcata L.) collected from different regions of China were evaluated for their tolerance to drought. Differences were observed among accessions in their reactions to drought and 8 good tolerant accessions at populations level and 18 excellent tolerant accessions at individual level were identified based on drought response index (DRI).
Wang, Jinfeng,장경풍 한국상품문화디자인학회 2024 상품문화디자인학연구 Vol.76 No.-
Books, the oldest form of cultural communication, are repositories of ideas and knowledge. In this context, book covers play an important role as a visual gateway between readers and the content. In the context of globalization, book cover designs vary across countries, and styles from China and Korea, in particular, often contain visual expressions of the deep cultural heritage and aesthetic concepts of the country. This study combines qualitative and quantitative analyses to examine a Chinese and Korean sample of the “Best Book Design from All Over The World” and subjectively compares the color, graphics, text, and other design elements of the book covers. Furthermore, it uses the powerful data processing and analysis functions of the R programming language to conduct a statistical, quantitative, and comparative analysis of book cover designs from China and Korea. Results show that book cover designs in Korea tend to favor a modern and minimalist style, emphasizing functionality and intuitiveness, whereas Chinese covers lean more toward integrating artistic elements with traditional aesthetics. The cultural and aesthetic concepts behind the differences are then explored from the perspectives of language, writing system, historical tradition, and aesthetic preference.
Aerodynamic shape optimized design for wind turbine blade using new airfoil series
Quan Wang,Jun Wang,Jin Chen,Song Luo,Jinfeng Sun 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.7
This paper introduces a new airfoil series to optimize the aerodynamic shape of wind turbine blades. It is verified that the CQU-A airfoilseries exhibits high aerodynamic performance by using the wind tunnel experimental data and RFOIL. The geometry of a 2 MWwind turbine blade with new airfoil families is designed preliminarily based on the shape of Tjaereborg 2 MW rotor. A multi-objectiveoptimized model combining the maximum power coefficient of the wind turbine with minimum area of the blade surface is proposed forthe pitch regulated wind turbine. An optimized code is developed based on the corrected blade element momentum (BEM) theory andparticle swarm optimization (PSO) algorithm. The optimization results show that, compared with that of the original rotor and the Tjaereborgrotor, not only the power coefficient and annual power production is improved, but also the area of the blade surface is reduced. The decreased area indicates that the mass of the optimized blades is reduced. It is beneficial for increasing the fatigue life and reducingcost of composite materials if the internal structure of the wind turbine blades is unchanged. Furthermore, the load of the blade root iseffectively controlled by using this alternative optimization program.
왕금봉 ( Wang Jinfeng ),장경풍 ( Zhang Qingfeng ) 한국상품문화디자인학회 2024 상품문화디자인학연구 Vol.77 No.0
본 연구의 목적은 중국 시장에서 한국 화장품 브랜드에 대한 패키지 디자인 만족도와 소비자 구매결정에 미치는 영향을 탐구하는 데 있다. IPA 분석법을 활용하여 한국 화장품 패키지 디자인에 대한 중국 소비자의 중요성 인식과 만족도를 분석하고 디자인 요소의 장점과 부족한 점을 검증했다. 차원 구분을 통해 설문조사를 설계하고 소비자 287명을 대상으로 조사를 진행하며 수집한 데이터를 분석했다. 연구 결과에 따르면 감각과 기능 차원에서 한국 화장품 패키지 디자인은 우수한 평가를 받았지만 문화 차원에서 평가가 낮은 것으로 나타났다. 중국 시장을 겨냥한 한국 화장품 브랜드는 중국 시장에 적응하기 위해 패키지 디자인의 문화적 요소를 강조할 필요가 있다. 이에 따라 다음과 같은 제언을 제시했다. 문화적 요소의 융합을 강조하고 혁신과 전통을 융합하여 브랜드 스토리의 현지화를 강화할 수 있다. 본 연구는 한국 화장품 브랜드를 위한 실용적인 패키지 최적화 방향을 제공하고 글로벌 상품 디자인을 위한 소중한 시장 전략을 제공했다. This study aims to investigate satisfaction among Chinese consumers with Korean beauty brand packaging design, its impact on consumers’ purchasing decisions, and the strengths and weaknesses of the design elements using importance-performance analysis. For this purpose, a questionnaire was developed through dimensional classification and a survey was conducted with 287 consumers. The results reveal that Korean beauty product packaging designs excel in the sensory and functional dimensions but are significantly deficient in the cultural dimension. Therefore, to better adapt to the Chinese market, Korean beauty brands need to strengthen the cultural elements in their package designs. Based on the findings, suggestions are provided to enhance the integration of cultural elements and of innovation and tradition and the localization of brand stories. This study provides practical directions for Korean beauty brands to optimize their packaging and provides valuable market insights for cross-cultural product design.
Jinfeng Liu,Yu Zhang,Xudong Wang,Herbert Ho-Ching IU 대한전기학회 2017 Journal of Electrical Engineering & Technology Vol.12 No.4
This paper presents a synchronous generator with a distributed system of multiple parallel three-phase power cells. This generator can immediately output high DC. Each power cell comprises three-phase windings and a three-phase synchronous rectification bridge with a deadbeat control of load power feedforward, which can improve the characteristics of dynamic response and reflect the load variance in real time. Furthermore, each power cell works well independently and modularly using the method of automatic maximum current sharing. The simulation and experimental results for the distributed controller of multiple power cells demonstrate that the deadbeat control method can respond quickly and optimize the quality of the energy. Meanwhile, automatic maximum current sharing can realize the validity of current sharing among power cells.
Jinfeng Liu,Xudong Wang,Rui Gong 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.12
In order to solve the problem about the brush and slip ring in drive motor of renewable energy vehicle, high frequency power magnetic field produced by a novel separable magnetic pot transformer could achieve contactless excitation energy transfer. For contactless energy transfer (CET) system, its research about energy and efficiency quality still remains a low level because application and research of CET are not integrated, especially how to improve transmission power and efficiency is still not enough. First of all in this paper, the topology of magnetic pot transformer is built to design resonant compensation circuit. Secondly, mutual inductance parameter is proposed by optimum efficiency analysis through calculation. Thirdly, circuit simulation model of Matlab and 3D simulation model of Ansoft Maxwell which can complete finite element transient analysis are built to verify the accuracy of optimum efficiency analysis. Lastly, the experiment platform about CET in synchronous generator prototype is performed. Although the output power had little increase, experiment and Matlab, Ansoft 3D simulation research proved that system efficiency had a quite increase based on optimum efficiency analysis.
The Impacts of Childhood Trauma on Psychosocial Features in a Chinese Sample of Young Adults
Dandan Wang,Shaojia Lu,Weijia Gao,Zhaoguo Wei,Jinfeng Duan,Shaohua Hu,Manli Huang,Yi Xu,Lingjiang Li 대한신경정신의학회 2018 PSYCHIATRY INVESTIGATION Vol.15 No.11
Objective The aims of the present study were to explore the occurrence of childhood trauma and importantly to determine the impacts of childhood trauma on psychosocial features in a Chinese sample of young adults. Methods A survey was carried out in a group of 555 university students by using Childhood Trauma Questionnaire (CTQ), Self-rating Depression Scale (SDS), Self-rating Anxiety Scale (SAS), Dysfunctional Attitudes Questionnaire (DAS), Eysenck Personality Questionnaire (EPQ), and Social Support Rating Scale (SSRS). The moderate-severe cut-off scores for CTQ were used to calculate the prevalence of childhood trauma, and then psychosocial features were compared between individuals with and without childhood trauma. Results A proportion of 18.6% of university students had self-reported childhood trauma exposures. Subjects with childhood trauma reported higher scores of SDS, SAS, DAS, and psychoticism and neuroticism dimensions of EPQ (t=4.311–5.551, p<0.001); while lower scores of SSRS and extraversion dimension of EPQ (t=-4.061– -3.039, p<0.01). Regression analyses further revealed that scores of SAS and DAS were positively (Adjusted B=0.211–0.230, p<0.05), while scores of SSRS were negatively (Adjusted B=-0.273– -0.240, p<0.05) associated with specific CTQ scores. Conclusion Childhood trauma is still a common social and psychological problem. Individuals with childhood trauma show much more depression, anxiety, distorted cognition, personality deficits, and lower levels of social support, which may represent the social and psychological vulnerability for developing psychiatric disorders after childhood trauma experiences.