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Search Results: 1 - 10 of 120464 matches for " Zhenhua WANG "
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Comparing a small gravel-less perforated pipe leach fields (GPPLF) to a medium one in treating domestic sewage  [PDF]
Yiheng Yang, Chengduan Wang, Zhenhua Dang
Natural Science (NS) , 2012, DOI: 10.4236/ns.2012.43029
Abstract: There were obvious differences between a medium gravel-less perforated pipe leach fields and a small system in the treatment of demestic sewage with the change of influent quality. In small system, COD removal rate was 91%, ammonia nitrogen removal rate was 90%, total nitrogen was 58%. In medium system, COD removal rate was 86.07%, ammonia nitrogen removal rate was 45.3%, and total nitrogen was 48.2%. This paper studied on the differences. Its main reasons were as follows: differences in opening rate (perforated area account of the total area in infiltration pipe), air flow conditions, exterior environment, and wastewater distribution. Considering those problems, Solutions and applications for the development of GPPLF are given.
Impact of Incubated Enterprises’ Cognitive Social Capital on Innovation Performance in Incubation Network: Acting through Intangible Resources Acquisition  [PDF]
Zhenhua Li, Fuwei Li, Jiashuo Wang
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.510007
In the background of incubation network, the paper studies how incubated enterprises gain cognitive social capital through embedding in the network, obtain intangible resources effectively in the resource-sharing environment and improve their innovation performance. We construct and analyze the theoretical model of cognitive social capital, intangible resource acquisition and innovation performance. The incubated enterprises need to strengthen cognitive social capital accumulation through incubation network; it effects the ability of intangible resource acquisition, then helps start-ups improve innovation performance.
Prospective Observation of Switching Rate of Antidepressants in Management of Depressive Episode in 3 Months  [PDF]
Weidong Jin, Naixin Wang, Yongchun Ma, Zhenhua Tong
Psychology (PSYCH) , 2013, DOI: 10.4236/psych.2013.43026
Abstract: Objective: to observe prospectively of switching rate of antidepressants in management of depressive episode. Methods: 190 patients with depressive episode treated by antidepressants were observed for 3 months and switching rate were assessed under “best natural therapy”. And switching criteria was following: 1) manic or hypomanic episode; or 2) promoting rapid cycling; or 3) YMRS ≥ 11 or irritability or aggravation in YMRS ≥ 3. 4) Psychiatrist thinks that the patients should be stopped to take antidepressants and should be placed by mood stabilizer or antipsychotics or their combination. Results: 1) 18 of 190 patients was found to switch in 3 month therapy. The switching rate was 9.47%. 2) 4 of 61 males was found and 14 females was found to switch, their switching rate was not significant (6.56%, 10.85%, X2 = 0.89, P > 0.05). 3) 10 of 170 unipolar depression and 8 of bipolar depression was found to switch, their switching rate was very significant (5.88%, 40%, X2 = 24.29, P < 0.01). 4) 5 of 36 patients token mood stabilizer and 13 patients not token mood stabilizer was found to switch, their switching rate was not significant (13.8%, 8.44%, X2 = 1.47, P > 0.05). 5) 7 of 54 patients token more two antidepressants and 11 patients token single antidepressant was found to switch, their switching rate was not significant (12.96%, 8.08%, X2 = 1.07, P > 0.05). 6) 7 of 38 patients with family history of mood disorder and 11 of patients without family history of mood disorder was found to switch, their switching rate was significant (18.4%, 7.23%, X2 = 4.43, P < 0.05). 7) The switching often carried out at one month after treatment with antidepressants. 8) The significant difference in switching rate among various antidepressants were not found. Conclusion: Some depressive patients may switch during treatment with antidepressant, it should be stressed on.
The Dosimetric Characteristics and Potential Limitation in Clinical Application of a Low Energy Photon Intra-Operative Radiotherapy System  [PDF]
Zhenhua Xiao, Ouyang Bin, Zhenyu Wang, Botian Huang, Bixiu Wen
International Journal of Medical Physics,Clinical Engineering and Radiation Oncology (IJMPCERO) , 2015, DOI: 10.4236/ijmpcero.2015.42023
Purpose: To investigate the dosimetric characteristics of a low energy photon intra-operative radiotherapy (IORT) system and explore its potential limitation in clinical application. Methods: A special water phantom, a parallel-plate ionization chamber and an electrometer were used to measure the depth dose rate, isotropy of dose distribution in X/Y plane, dosimetry reproducibility of bare probe and spherical applicators of different size which were used in comparison with the system data. Results: The difference in depth dose rate between the measurement and system data for bare probe is -2.16% ± 1.36%, the range of the relative deviation for isotropy in the X/Y plane is between -1.9% and 2.1%. The difference in depth dose rate, transfer coefficient, isotropy in X/Y plane between the measurement and system data for the whole set of spherical applicators is -10.0% - 2.3%, -8.9% - 4.2% and -1.6% - 2.6%, respectively. Higher surface dose rate and steeper gradient depth dose are observed in smaller spherical applicators. The depth dose rate and isotropy for bare probe and spherical applicators have been shown good reproducibility. The uncertainty of measurement is associated with the positioning accuracy, energy response, noise current and correction function f’(R). Conclusions: Thorough commissioning of the low energy photon IORT system helps us better understand the dosimetry characteristics, verify the system data, obtain adequate data for clinical application and routine quality assurance. The steep gradient depth dose and limited treatment range may restrain its potential in clinical application.
The Public Perception of Corporate Social Responsibility and Its Effects on Customer Behaviour in China  [PDF]
Junwu Chai, Pengfei Chang, Zhenhua Wang, Yaw Brew
American Journal of Industrial and Business Management (AJIBM) , 2015, DOI: 10.4236/ajibm.2015.510061
Abstract: With the rapid economic development of China, many enterprises have developed rapidly with the growing scale and strength, and their products and services have had a profound impact on the society. However, the study finds that many enterprises are merely spectators toward corporate social responsibility (CSR); these enterprises do not play an active role in CSR. At present, the domestic and foreign scholars’ researches on CSR are focused on motivation, influence factors and its influence on enterprise performance, but less attention has been given to the public perception of CSR and its different effects on customer behavior from the demographic range. This paper is based on a questionnaire of public perception in CSR, advancing with the times to consider the current status of the public’s perception of CSR in China, at the same time, it investigates the public’s attention to the dimensions of CSR at present, and particularly analyzes the perception of CSR and its different effects on customer behaviour in the demographic indicators.
Performance Improvement of Dye-Sensitized Solar Cell by Phenanthrothiadiazole Unit-Based π-Conjugated Bridge  [PDF]
Xiaoqiang Yu, Yi Wang, Tianyu Huang, Zhenhua Ci, Ming Bao
Journal of Materials Science and Chemical Engineering (MSCE) , 2018, DOI: 10.4236/msce.2018.67004
New organic dyes (D1, D2, and D3) containing a phenanthrothiadiazole unit as a π-conjugated system, a triarylamine as an electron donor, and a cyanoacrylic acid moiety as an electron acceptor were synthesized. The optical and electrochemical properties of dyes D1, D2, and D3 were investigated, and their performance as sensitizers in solar cells was evaluated. Dye-sensitized solar cells based on dye D3 produced a photon-to-current conversion efficiency of 5.23% (Jsc = 9.70 mA/cm2, Voc = 0.77 V, ff 0.70) under 100 mW/cm2 simulated AM 1.5 G solar irradiation.
Roots in operator and Banach algebras
David P. Blecher,Zhenhua Wang
Mathematics , 2015,
Abstract: We show that several known facts concerning roots of matrices generalize to operator algebras and Banach algebras. We show for example that the so-called Newton, binomial, Visser, and Halley iterative methods converge to the root in Banach and operator algebras under various mild hypotheses. We also show that the `sign' and `geometric mean' of matrices generalize to Banach and operator algebras, and we investigate their properties. We also establish some other facts about roots in this setting.
Learning Fine-grained Features via a CNN Tree for Large-scale Classification
Zhenhua Wang,Xingxing Wang,Gang Wang
Computer Science , 2015,
Abstract: We propose a novel approach to enhance the discriminability of Convolutional Neural Networks (CNN). The key idea is to build a tree structure that could progressively learn fine-grained features to distinguish a subset of classes, by learning features only among these classes. Such features are expected to be more discriminative, compared to features learned for all the classes. We develop a new algorithm to effectively learn the tree structure among a large number of classes. Experiments on large-scale image classification tasks demonstrate that our method could boost the performance of a given basic CNN model. Our method is quite general, hence it can potentially be used in combination with many other deep learning models.
E-Government Satisfaction in Mandatory Adoption Environment
Zhenhua Lu,Changlin Wang,Hongli Wang
Research Journal of Applied Sciences, Engineering and Technology , 2012,
Abstract: In this study, we construct an adoption model to analyze factors that influence users adoption egovernment and bulid a e-government satisfaction model to test perceived security. The theoretical model is tested by Smart-PLS 2.0 on a dataset of 136 samples. The empirical result indicates that perceived fit and perceived security have positive effect on perceived value, perceived value was positively related to satisfaction; Moreover, perceived value mediates the effect of perceived fit and perceived security on egovernment satisfaction. In addition, the research result is analyzed and discussed. Also the significance of the research and future research directions are pointed out.
Evolutionary dynamics of cooperation on interdependent networks with Prisoner's Dilemma and Snowdrift Game
Baokui Wang,Zhenhua Pei,Long Wang
Computer Science , 2014, DOI: 10.1209/0295-5075/107/58006
Abstract: The world in which we are living is a huge network of networks and should be described by interdependent networks. The interdependence between networks significantly affects the evolutionary dynamics of cooperation on them. Meanwhile, due to the diversity and complexity of social and biological systems, players on different networks may not interact with each other by the same way, which should be described by multiple models in evolutionary game theory, such as the Prisoner's Dilemma and Snowdrift Game. We therefore study the evolutionary dynamics of cooperation on two interdependent networks playing different games respectively. We clearly evidence that, with the increment of network interdependence, the evolution of cooperation is dramatically promoted on the network playing Prisoner's Dilemma. The cooperation level of the network playing Snowdrift Game reduces correspondingly, although it is almost invisible. In particular, there exists an optimal intermediate region of network interdependence maximizing the growth rate of the evolution of cooperation on the network playing Prisoner's Dilemma. Remarkably, players contacting with other network have advantage in the evolution of cooperation than the others on the same network.
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