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Search Results: 1 - 10 of 77312 matches for " Yu Han "
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Hockey Experimental Study on the Characteristics of Different Exercise Load
Yu Han
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: As times and technology advances, hockey movement with the hockey field of artificial ground improvement, hockey rod material improvement, rules changes and so on , the hockey players ' physical fitness and technique also had higher requirements. Research field hockey shooting technology, passing and catching skills, dribbling, sports competitions and small unit in different load characteristics of movement become hot. This research through the different physiological function load index, quantified shot technology, catch technology, dribbling technical movement, sports technical movement unit and small site game load related research, the results show that the movement technology action unit and small site game heart rate load is obviously higher than that of the total playing time and intermittent playing time heart rate load and pure game time load no significant difference; Different physiological function and energy consumption load index difference comparison shows, a single technical action of load between no significant difference, small site game load is obviously higher than that of the motion unit load.
Building Robust Crowdsourcing Systems with Reputation-aware Decision Support Techniques
Han Yu
Computer Science , 2015,
Abstract: Crowdsourcing refers to the arrangement in which contributions are solicited from a large group of unrelated people. Due to this nature, crowdsourcers (or task requesters) often face uncertainty about the workers' capabilities which, in turn, affects the quality and timeliness of the results obtained. Trust is a mechanism used by people to facilitate interactions in human societies where risk and uncertain are common. The crucial challenge to building a robust crowdsourcing system is how to make trust-aware task delegation decisions to efficiently utilize the capacities of workers (or trustee agents) to achieve high social welfare? This book presents the research addressing this challenge. It goes beyond the existing trust management research framework by removing a widespread assumption implicitly adopted by existing research: that a trustee agent can process an unlimited number of interaction requests per discrete time unit without compromising its performance as perceived by the task requesters (or truster agents). Decision support in crowdsourcing is re-formalized as a multi-agent trust game based on the principles of the Congestion Game, which is solved by two trust-aware interaction decision-making approaches: 1) the Social Welfare Optimizing approach for Reputation-aware Decision-making (SWORD) approach, and 2) the Distributed Request Acceptance approach for Fair utilization of Trustee agents (DRAFT). SWORD is designed for centralized systems, while DRAFT is designed for fully distributed systems. Theoretical analyses have shown that the social welfare produced by these two approaches can be made closer to optimal by adjusting only one key parameter. With these two approaches, the framework of research for crowdsourcing systems can be enriched to handle more realistic scenarios where workers have varied and limited capabilities.
Synthesis of LiCopo4 Powders as a High-Voltage Cathode Material via Solvothermal Method  [PDF]
Jianhuang Ke, Yu Han, Kai Xie
Journal of Power and Energy Engineering (JPEE) , 2017, DOI: 10.4236/jpee.2017.512004
Abstract:
Lithium cobalt phosphate (LiCoPO4, LCP), having a high operating potential (4.8 V vs. Li/Li+), a flat voltage profile and a good theoretical capacity (167 mAh/g), is considered a promising cathode material for improving the energy density of lithium-ion batteries (LIBs) [1] [2]. Here we report a category of method for synthesizing LCP, the solvothermal (ST) method with a binary solvent (deionized water: ethyl alcohol = 1:1), controlling the concentration of cobalt ion in 0.05 mol/L (ST-0.05) and 0.25mol/L (ST-0.25). The material phase was apparently identified via X-ray diffraction (XRD). Observed by scanning electron microscopy (SEM), the grain size of LCP powders synthesizing by solvothermal method with two kinds of the concentration of cobalt ion were 400 × 400 × 1000 nm cuboids (ST-0.05) and 150 × 150 × 250 nm hexagonal prisms containing nanoparticles (ST-0.25), respectively. Discharge capacities of LCP were 76.0 mAh/g (ST-0.05) and 94.5 mAh/g (ST-0.25), in the first cycle at 0.1 C, respectively.
Some Properties of Solution to Semidefinite Complementarity Problem  [PDF]
Yu Chen, Cuiling Chen, Caihong Han
Journal of Applied Mathematics and Physics (JAMP) , 2018, DOI: 10.4236/jamp.2018.61012
Abstract: In this paper, we discuss the nonemptyness and boundedness of the solution set for P*-semidefinite complementarity problem by using the concept of exceptional family of elements for complementarity problems over the cone of semidefinite matrices, and obtain a main result that if the corresponding problem has a strict feasible point, then its solution set is nonemptyness and boundedness.
Effect of Wuling Powder on rats with renal hypertension
HAN Yu-Ping
Zhong Xi Yi Jie He Xue Bao , 2003,
Abstract: Objective: To observe the therapeutic effect of Wuling Powder extract on rats with renal hypertension and to evaluate the influence of it on the volume of urine and the concentrations of Na+, K+, Cl-. Methods: Reformed Gold-blatt hypertension rat model (G-2K1C) was established. The rats were divided into 6 groups as follows: sham-operation group; model group, Wuling Powder high dosage group (80 g/kg), Wuling Powder middle dosage group (40 g/kg), Wuling Powder low dosage group (20 g/kg), and hydrochlorothiazide (HCT) group (25 mg/kg). Urine volume of the rats was measured during the experiment. Tail arterial pressure and [Na+], [K+], [Cl-] in serum of the rats were detected after 30 days of treatment. Results: The blood pressure of the G-2K1C rats was decreased in the three Wuling Powder groups (P<0.05 or P<0.01), but higher than that of the false-operation group (P<0.01), and there was no difference between each of the Wuling Powder groups and the HCT group (P>0.05). Diuretic effect of the three dosages of Wuling Powder was weaker than that of the HCT (P<0.05 or P<0.01). The effects of the three dosages of Wuling Powder and HCT on [Na+] and [Cl-] in the serum were not obviously different (P>0.05), but [K+] of the HCT group was significantly decreased compared with that of the false-operation group and the three Wuling Powder groups (P<0.01). Conclusion: Wuling Powder extract had satisfying therapeutic effects in increasing the discharge of urine, decreasing the blood pressure and keeping the balance of the serum electrolyte contents in rats with renal hypertension.
Critical Analysis of Discourse in One-Guideline-One-Version Textbook Policy
Han-Yu Li
Journal of Textbook Research , 2009,
Abstract: This paper analyzes the one-guideline-one-version textbook andone-guideline-multiple-versions textbook using the perspective of Foucauldian discourse analysis. It points out that the discourse of returning to a one-guideline-one-version textbook produced a discourse space of interplay under concepts of knowledge, power, and a specific social culture context. Furthermore, it discusses the local and central government’s three main paths for revision of the law—accommodating public wishes, responding to currentworld trends, and relieving economic pressure on students and households—as discourse strategies. Finally, it points out the absence of a voice for students, teachers, other countries and educational organizations within this process andexplicates the implications of the contention for textbook orientation in education and policy making.
Biomarkers of Patients with Non-small Cell Lung Cancer who Benefited from Erlotinib Treatment
Dali HAN,Jinmimg YU
Chinese Journal of Lung Cancer , 2009,
Abstract:
Effect of Surfactants on Pressure-Sensitivity of CNT Filled Cement Mortar Composites
Baoguo Han,Xun Yu
Frontiers in Materials , 2014, DOI: 10.3389/fmats.2014.00027
Abstract: Sodium dodecyl sulfate (SDS) and sodium dodecylbenzene sulfonate (NaDDBS) were used as surfactants to disperse multi-walled carbon nanotubes (MWNT) in cement mortar and fabricate pressure-sensitive carbon nanotubes filled cement mortar composites. The pressure-sensitivity of cement mortar composites with different concentrations of MWNT and different surfactants was explored under repeated loading and impulsive loading, respectively. Experimental results indicate that the response of the electrical resistance of composites with NaDDBS to external force is more stable and sensitive than that of composites with SDS. Therefore, NaDDBS has higher efficiency than SDS for the dispersion of MWNT in cement mortar, and it is an effective surfactant for fabricating MWNT filled cement mortar composites with superior pressure-sensitivity.
Derived equivalence and birationality
Yu-Han Liu
Mathematics , 2011,
Abstract: A different proof to a known criterion of derived equivalence implying birationality is given. Derived equivalent smooth projective curves over an algebraically closed field are proved to be isomorphic. A different proof of derived equivalence implying birationality for varieties of general type (originally due to Kawamata) is given.
Four limit cycles from perturbing quadratic integrable systems by quadratic polynomials
Pei Yu,Maoan Han
Mathematics , 2010,
Abstract: In this paper, we give a positive answer to the open question: Can there exist 4 limit cycles in quadratic near-integrable polynomial systems? It is shown that when a quadratic integrable system has two centers and is perturbed by quadratic polynomials, it can generate at least 4 limit cycles with (3,1) distribution. The method of Melnikov function is used.
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