• Smart Structures and Systems
• /
• 제24권6호
• /
• pp.783-791
• /
• 2019

Prefabricated reinforced-concrete shear walls are used extensively in building structures because they are convenient to construct and environmentally sustainable. To make large walls easier to transport, they are divided into smaller segments and then assembled at the construction site using a variety of connection methods. The present paper proposes a precast shear wall assembled using steel shear keys, wherein the shear keys are fixed on the embedded steel plates of adjacent wall segments by combined plug and fillet welding. The anchoring strength of shear keys is known to affect the mechanical properties of the wall segments. Loading tests were therefore performed to observe the behavior of precast shear wall specimens with different anchoring components for shear keys. The specimen with insufficient strength of anchoring components was found to have reduced stiffness and lateral resistance. Conversely, an extremely high anchoring strength led to a short-column effect at the base of the wall segments and low deformation ability. Finally, for practical engineering purposes, a design approach involving the safety coefficient of anchoring components for steel shear keys is suggested.

• Wind and Structures
• /
• 제4권6호
• /
• pp.505-518
• /
• 2001

Shantou Bay Bridge is the first long-span suspension bridge in China. Because of its location near the Shantou Seaport and its exposure to high typhoon winds, wind-resistant studies are necessary to be made. In this paper, critical flutter wind speeds and buffeting responses of this bridge at its operation and main construction stages are investigated. The Buffeting Response Spectrum method is first briefly presented. Then the sectional model test is carried out to directly obtain the critical flutter wind speed and to identify the flutter derivatives, which are adopted for the later analysis of the buffeting responses using the Buffeting Response Spectrum method. Finally the aeroelastic full bridge model is tested to further investigate the dynamic effects of the bridge. The results from the tests and the computations indicate that the flutter and buffeting behaviors of the Shantou Bay Bridge are satisfied.

• Plant Resources
• /
• 제7권1호
• /
• pp.7-14
• /
• 2004

Allium wakegi was cultured shoot tip in the condition of light culture. The Allium wakegi added plant growth regulator was observed of plant regeneration and bulblet formation. Callus Induction and growing rate was the best of 78％ when added alone 2,4-D 0.5mg/L. In the formation of shoot, its regeneration rate was 96％ when added BA 0.5mg/L in the light culture condition. When BA 0.5mg/L and NAA 0.5mg/L mixed and BA 0.5 mg/L and NAA 1.0mg/L mixed, the rates were 99％ and 97％ respectively, and these conditions were suitable for forming shoot. In the formation of roots, when added NAA 2.0mg/L in the light culture condition, the regeneration rate was 90.6 ％ and the roots were abnormal. When added NAA 1.0mg/L, the rate was 82 ％ and the highest. In the formation of bulbs, when BA 05mg/L and NAA 1.0mg/L mixed, the root generantion and its size in the bulbs was the best compare to other treatment experiments.

• 한국의사학회지
• /
• 제34권2호
• /
• pp.65-77
• /
• 2021

Lee Jema said in his book, Dongui Susebowon, that the prescriptions for Soum constitutional type were already developed by doctors during the Song Jin Yuan China around 10th-13th century. Those prescriptions were common techniques that were used throughout the East Asian region. Among them, Lee Jema specially selected some candidate formulas and modified them according to his constitutional theory. This study investigated how similar his modified prescriptions to original formulas through database[ancient formula database] analysis. 24 out of 24 Soum prescriptions selected meaningful ingredient herbs from the original formula. A 50% or higher concordance rate compared to the original formulas. There are only 9 treatment prescriptions that cannot be checked in the ancient formula database. A future task will be to reveal the practical meanings of the ingredients Lee Jema adjusted for the Soum constitutional type patients.

• 동의신경정신과학회지
• /
• 제29권4호
• /
• pp.291-303
• /
• 2018

Objectives: The objective of this study is to analyze the Clinical reports of treatment of obsessive compulsive disorder (OCD) in traditional Chinese medicine (TCM). Methods: Clinical reports on obsessive compulsive disorder treatment from 2001 to 2017 were searched using the following key words in the China National Knowledge Infrastructure (CNKI). 'OCD', 'qiangpo zheng'. Results: A total of 22 papers were selected, 12 of which were clinical research papers and 10 case report papers. The acupuncture and moxa treatment was more effective in relieving the clinical symptoms of OCD patients as compared to only using western medicine, and it was also possible to reduce the adverse effects of western medicine. Conclusions: It was established that Traditional Chinese medicine has some effect on the treatment of OCD, but there were limitations as follows. The selected papers were retrieved from only one site of CKNI and did not follow a systematic review methodology. Therefore generalized results could not be derived, further studies should therefore be carried out.

• Current Photovoltaic Research
• /
• 제6권4호
• /
• pp.124-132
• /
• 2018

The Korean electric power supply plan was prepared by greatly enhancing the environmental and safety with considering the economical efficiency of the electric equipment, the impact on the environment and the public safety. As a result, the fossil energy-based power generation sector is accelerating the paradigm shift to eco-friendly energy such as solar power and wind. Also the solar power industry is expected to grow into a super large-sized industry by converging the energy storage and electric vehicle industry. Generally, a levelized cost of electricity (LCOE) is used to calculate the power generation cost for different generation power generation efficiency, operating cost, and life span. In this paper, we have studied the future research and development direction of photovoltaic technology development for the era of massive utilization of photovoltaic solar power, and have studied the LCOE of major countries including China, USA, Germany, Japan and Korea. Finally we have reviewed USA and Japan research programs to reduce the LCOE.

• 대한한의학원전학회지
• /
• 제34권3호
• /
• pp.55-72
• /
• 2021

Objectives : This paper investigates the significance of the transmission ritual (TR) documented in the Huangdi Neijing (HN) and its effects on medicine pursued by HN's authors (medical bureaucrats). Methods : Descriptions of knowledge transmission and related ritual were identified from HN texts. They were compared with similar types of actions in ancient China, then historically reconstructed. They were also approached from the perspective of ritual studies. Results : It appears highly probable that TR in HN had actually been performed by the authors themselves, which shows characteristics of rites of passage. The participants accepted the in-group order based on patrimonial piety. TR consecrates the participants as well as its object, which is medical knowledge. Conclusions : In the field of TR, the participants shared not only a specific document or knowledge, but also their common experiences of medical perfection and sanctity. They constructed their noble group identity through TR. At the same time, TR inhibited arguments inside the group, in favor of one-way communication.

• Nuclear Engineering and Technology
• /
• 제53권8호
• /
• pp.2708-2715
• /
• 2021

The Multi-Purpose Overload Robot (CMOR) is a key subsystem of China Fusion Engineering Test Reactor (CFETR) remote handling system. Due to the long cantilever and large loads of the CMOR, it has a large rigid-flexible coupling deformation that results in a poor position accuracy of the end-effector. In this study, based on the Levenberg-Marquardt algorithm, the spatial grid, and the linearized variable load principle, a variable parameter compensation model was designed to identify the parameters of the CMOR's kinematics models under different loads and at different poses so as to improve the trajectory tracking accuracy. Finally, through Adams-MATLAB/Simulink, the trajectory tracking accuracy of the CMOR's rigid-flexible coupling model was analyzed, and the end position error exceeded 0.1 m. After the variable parameter compensation model, the average position error of the end-effector became less than 0.02 m, which provides a reference for CMOR error compensation.

• 수산해양기술연구
• /
• 제58권3호
• /
• pp.205-213
• /
• 2022

The experimental fish transplanted from China in 2015 was used after seedling production and cultivated. Breeding management for experiment was carried out from October 2020 to February 2021. Also, it succeeded in inducing artificial maturation three to four months earlier than wild broodstock and secured good quality fertilized eggs. The average size of fertilized eggs was 1.22 mm, at 20℃ Blastodisc (15 minutes post-fertilization), 2 cell (50 minutes), 4 cell (1 hours), 8 cell (2 hours), 16 cell (2 hours and 30 minutes), 32 cell (2 hours and 50 minutes), morula (3 hours), blastula (8 hours), gastrula (15 hours), skull formation (20 hours), organ formation (30 hours) and hatching yolk larvae stage (35 hours). The total length of the just hatched larvae were 2.50 ± 2 mm, and then gain growth of 42.5 mm by 60 days, reaching 45 ± 5 mm.

• 아태비즈니스연구
• /
• 제13권2호
• /
• pp.51-61
• /
• 2022

Purpose - This paper investigates how consumers' feelings of guilt affect their preference for imported products. Choosing imported products over domestic products reveals that consumers' motivation is to improve themselves. This study also tries to examine whether choosing imported goods has a restorative effect on feelings of guilt. Design/methodology/approach - We ran two experiments to test our hypothesis. Participants were recruited in China and the data analysis software used in this study was SPSS 26.0 for analysis. Findings - The results show that consumers with guilt feelings are more likely to import products than to consume domestic products, the second result shows that choosing imported products has an effect on guilt. In addition, consumers with low self-efficacy in a guilty condition prefer imported products to domestic products. Research implications or Originality - Based on previous research that focused on how guilt activates consumers' self-improvement goals, this study shows that when consumers experience feelings of guilt, they prefer imported products to reduce their negative feelings. These findings are discussed in the light of their implications for research on consumer self-motivation and ways of coping with it.