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Search Results: 1 - 10 of 27786 matches for " LEI Yun "
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Research on Supply Chain Coordination of TPL Supplier Participation  [PDF]
Yun Liang, Xiaode Zuo, Hong Lei
Journal of Service Science and Management (JSSM) , 2011, DOI: 10.4236/jssm.2011.41001
Abstract: This paper used the Game Theory to research how to coordinate a kind of supply chain, which is made up of a dominant manufacturer, a TPL supplier and some retailers. It also discussed the node enterprises’ decision models in three situations: no coordination, partly coordination and all coordination based on symmetric information and proved system’s profit was optimal in the situation of all coordination. And then some ways of profit distribution were laid out. Finally, verified the validity of the models and ways of profit distribution through examples.
Global solutions for micro-macro models of polymeric fluids
Zhen Lei,Yun Wang
Mathematics , 2012,
Abstract: We provide a new proof for the global well-posedness of systems coupling fluids and polymers in two space dimensions. Compared to the well-known existing method based on the losing a priori estimates, our method is more direct and much simpler. The co-rotational FENE dumbbell model and the coupling Smoluchowski and Navier-Stokes equations are studied as examples to illustrate our main ideas.
Perspectives on Zonation in Ramsar Sites, and Other Protected Areas: Making Sense of the Tower of Babel  [PDF]
Qing Zeng, Peter Bridgewater, Cai Lu, Jinqi Yun, Guangchun Lei
Open Journal of Ecology (OJE) , 2014, DOI: 10.4236/oje.2014.413067
Abstract: Zonation of land or water areas is a tool frequently used to clarify management objectives, assist with monitoring of the effectiveness of those objectives and reconcile user conflicts. The Ramsar Convention has promoted zonation for wetlands as a management tool, but in a rather unstructured way, in contrast to the highly structured three-zone system of UNESCO-MAB Biosphere Reserves. At the same time, over the last 40 years IUCN has been developing a categorisation system for protected areas, currently based on management and monitoring objectives. Research undertaken primarily on wetlands in China, but with desk-top study in other regions has shown that by using these management and monitoring objectives as guiding principles, and building on the Biosphere Reserve zonation system, a new approach is possible for wetland protected or conserved areas. Developing from the three-zone system of Biosphere Reserves this new approach proposes four zones, offering more utility and flexibility for managing, monitoring and comparing wetland conservation sites, both spatially and temporally.
Poly[μ-aqua-aqua(μ-benzene-1,2,4,5-tetracarboxylato)gadolinate(III)potassium(I)]
Xue Yun Gong,Lei Zhang
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811016254
Abstract: In the title compound, [KGd(C10H2O8)(H2O)2]n, the Gd3+ ion is nine-coordinated by eight O atoms from five individual benzene-1,2,4,5-tetracarboxylate (btec) ligands and one water molecule, and the K+ ion is eight-coordinated by six O atoms from five individual btec ligands and two water molecules. In the crystal, the btec half-molecules are completed by crystallographic inversion symmetry. GdO9 and KO8 polyhedra are connected, forming layers in the ab plane, which are further interconnected by μ8- or μ12-bridging btec ligands, forming a three-dimensional structure.
Extraosseous Ewing's sarcoma arising from the pterygomandibular space  [PDF]
Wei Li, Jian Tao Huang, Xiao Qing Chen, Rong Hua Shi, Lei Jiang, Yun Fu Zhao
Open Journal of Stomatology (OJST) , 2011, DOI: 10.4236/ojst.2011.13018
Abstract: Extraosseous Ewing’s sarcoma (EES) arising in head and neck is extremely rare. We report on a rare case of EES originating from the pterygomandibular space. A 15-year-old boy was seen with a rapidly growing mass in the right upper neck, difficulty in opening mouth, dysphagia, numbness in the right lower lip and buccal skin. Clinical and radiological examinations indicated that a soft tissue mass origi-nated from the pterygomandibular space with the submandibular space and mouth floor extension. Histological and immunohistochemical evaluations of the biopsy specimen revealed poorly differentiated small blue round cells with positive stains for CD99 and neuron-specific enolase. According to the clinical manifestation, CT and MRI findings, histological pattern and the results of the immunohistochemical studies, the final diagnosis was EES. Our patient was treated with chemotherapy and radiotherapy. The lesion recurred locally after 10 months and he died of multiple distant metastases 22 months later. Early and confident diagnosis coupled with combined surgical excision and modern chemotherapy/radiotherapy appears to be the most effective treatment plan.
The Practical Problems and Progress of Western Mainstream Sex Education Models
Yun LEI,Lin HUANG,Demin LIU
Studies in Sociology of Science , 2011,
Abstract: : The contemporary western mainstream sex education models are “Abstinence -Only Sex Education” and “Comprehensive Sex Education”. Reflection of the two models’ practices in China reveals that Abstinence-Only Sex Education, by means of “moral bundling”, tend to employ the old morality to repress adolescents’ sexuality; Comprehensive Sex Education is inclined to the “sexual abetting” with indulgment in the teaching and adjustment of sexual knowledge and sexual psychology. To solve the practical difficulties between the two models, it is necessary to establish a new sex education model based on the morality which integrates the advantages of the two models. Key words: Sex Education Models; Moral Bundling; Sexual Abetting; Morality
Utility Maximization for Uplink MU-MIMO: Combining Spectral-Energy Efficiency and Fairness
Lei Deng,Wenjie Zhang,Yun Rui
Computer Science , 2014,
Abstract: Driven by green communications, energy efficiency (EE) has become a new important criterion for designing wireless communication systems. However, high EE often leads to low spectral efficiency (SE), which spurs the research on EE-SE tradeoff. In this paper, we focus on how to maximize the utility in physical layer for an uplink multi-user multiple-input multiple-output (MU-MIMO) system, where we will not only consider EE-SE tradeoff in a unified way, but also ensure user fairness. We first formulate the utility maximization problem, but it turns out to be non-convex. By exploiting the structure of this problem, we find a convexization procedure to convert the original non-convex problem into an equivalent convex problem, which has the same global optima with the original problem. Following the convexization procedure, we present a centralized algorithm to solve the utility maximization problem, but it requires the global information of all users. Thus we propose a primal-dual distributed algorithm which does not need global information and just consumes a small amount of overhead. Furthermore, we have proved that the distributed algorithm can converge to the global optima. Finally, the numeric results show that our approach can both capture user diversity for EE-SE tradeoff and ensure user fairness, and they also validate the effectiveness of our primal-dual distributed algorithm.
Relationship of Post-Stroke Aphasic Types with Sex, Age and Stroke Types  [PDF]
Jingfan Yao, Zaizhu Han, Yanli Song, Lei Li, Yun Zhou, Weikang Chen, Chunxue Wang, Yongjun Wang, Yumei Zhang
World Journal of Neuroscience (WJNS) , 2015, DOI: 10.4236/wjns.2015.51004
Abstract: Aim:To explore what is the relationship of the types of post-stroke aphasia with sex, age andstroke types.Methods:Retrospective analysis was administrated on data of 421 patients with acutestroke. Western battery aphasia was used to measure aphasiac type and aphasia quotient (AQ)score. The patients were divided into three age groups: young, middle-aged and elderly. The stroketypes were classified into cerebral infraction (CI) and intracerebral hemorrhage (ICH). Results: All subjects were right-handed, which males and females accounted for 69.60% and 30.40%, respectively. There were 116 cases of Broca’s aphasia (85 males), 35 cases of Wernicke’s aphasia (20 males),15 cases of conductive aphasia (10 males), 63 cases of transcortical motor aphasia (50 males), 11 cases of transcortical sensory aphasia (8 males), 27 cases of transcortical combined aphasia (13 males), 73 cases of anomic aphasia (47 males) and 81 cases of global aphasia (60 males). Male patients (69.60%) have a significantly higher morbidity of aphasia than that of females (30.40%) after stroke (χ2
Relationship of Post-Stroke Aphasic Types with Sex, Age and Stroke Types  [PDF]
Jingfan Yao, Zaizhu Han, Yanli Song, Lei Li, Yun Zhou, Weikang Chen, Yongmei Deng, Yongjun Wang, Yumei Zhang
World Journal of Neuroscience (WJNS) , 2015, DOI: 10.4236/wjns.2015.51004
Abstract: Aim: To explore what is the relationship of the types of post-stroke aphasia with sex, age and stroke types. Methods: Retrospective analysis was administrated on data of 421 patients with acute stroke. Western battery aphasia was used to measure aphasiac type and aphasia quotient (AQ) score. The patients were divided into three age groups: young, middle-aged and elderly. The stroke types were classified into cerebral infraction (CI) and intracerebral hemorrhage (ICH). Results: All subjects were right-handed, which males and females accounted for 69.60% and 30.40%, respectively. There were 116 cases of Broca’s aphasia (85 males), 35 cases of Wernicke’s aphasia (20 males), 15 cases of conductive aphasia (10 males), 63 cases of transcortical motor aphasia (50 males), 11 cases of transcortical sensory aphasia (8 males), 27 cases of transcortical combined aphasia (13 males), 73 cases of anomic aphasia (47 males) and 81 cases of global aphasia (60 males). Male patients (69.60%) have a significantly higher morbidity of aphasia than that of females (30.40%) after stroke (χ2 = 11.57
Response of Subcutaneous Xenografts of Endometrial Cancer in Nude Mice to Inhibitors of Phosphatidylinositol 3-Kinase/Akt and Mitogen-Activated Protein Kinase (MAPK) Pathways: An Effective Therapeutic Strategy for Endometrial Cancer  [PDF]
Ruixia Guo, Xinyan Wang, Ruifang Zhang, Huirong Shi, Yuhuan Qiao, Wenjing Yun, Xin Ge, Yan Lin, Jia Lei
Journal of Cancer Therapy (JCT) , 2015, DOI: 10.4236/jct.2015.612118
Abstract: Objective: This study was designed to explore whether inhibition of the extracellular-regulated kinase (ERK) and phosphatidylinositol-3-kinase (PI3K) signaling pathways can inhibit the growth of xenografts of endometrial cancer cell lines with different estrogen receptors (ER) profiles in vivo and to provide preliminary laboratory basis for the probability of endometrial adenocarcinoma treatment with blockage of the two pathways, especially to endometrial cancer with low ER status. Methods: Human endometrial cancer Ishikawa bearing ER and HEC-1Awith low ER status cells were subcutaneously injected into BALB/c nude mice to establish endometrial cancer xenograft tumor models. The effects of PI3K/Akt inhibitor LY294002, MAPK/ERK1/2 inhibitor PD-98059 and their combinations on the growth of the xenograft tumors and apoptotic state of Ishikawa and HEC-1Acells were tested in vivo using the inhibitory rate, the terminal deoxynucleotidyl transferase-mediated nick-end labeling assay, H/E-stain. Western blot analysis was used to detect the alterations of activated ERK (P-ERK) and AKT (P-AKT) during this process. Results: LY294002, a PI3K/Akt pathway inhibitor, induced significant suppression in the growth of both Ishikawa and HEC-1Acell xenograft tumors, concomitant with increased apoptosis in xenografts as evidenced by TUNEL. A similar effect was also observed when the MAPK/ERK1/2 signaling pathway was inhibited by PD98059. Concurrent inhibition of the PI3K/Akt and MAPK/ERK1/2 pathways showed enhanced anti-tumor effects in vivo as indicated by increased apoptosis. At the same time, the levels of P-ERK and P-AKT in both xenograft tumors decreased, and their levels in combination group was the lowest. Conclusions: PD98059, LY294002 and their combinations showed remarkable inhibitory effects on xenograft tumors of endometrial carcinoma cell lines with different expression status of ER in vivo through blockage of PI3K/Akt and MAPK/ERK1/2 signaling pathways. This suggests that targeting these pathways may be an effective therapeutic strategy against endometrial carcinomas, especially for ER-negative cancers which show poor response to endocrinal therapy.
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