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Search Results: 1 - 10 of 127542 matches for " June Li "
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Zeta functions of totally ramified p-covers of the projective line
Hanfeng Li,Hui June Zhu
Mathematics , 2003,
Abstract: In this paper we prove that there exists a Zariski dense open subset U defined over the rationals Q in the space of all one-variable rational functions with arbitrary k poles of prescribed orders, such that for every geometric point f in U(Qbar)$, the L-function of the exponential sum of f at a prime p has Newton polygon approaching the Hodge polygon as p approaches infinity. As an application to algebraic geometry, we prove that the p-adic Newton polygon of the zeta function of a p-cover of the projective line totally ramified at arbitrary k points of prescribed orders has an asymptotic generic lower bound.
MAC Frame Resolution and PHY Protocol Type Detection of IEEE 802.11  [PDF]
Ling Li, Shi Peng, June Li, Kai Yuan, Zhihao Wang, Yinbin Liu, Ping Chen, Xianbing Wang
Int'l J. of Communications, Network and System Sciences (IJCNS) , 2017, DOI: 10.4236/ijcns.2017.105B005
Frame resolution and physical layer (PHY) protocol type detection are the basis of research and development of intrusion prevention systems for IEEE 802.11 wireless network. Aiming at the problems which cannot be solved by the specifications export, this paper proposed a MAC frame analytical method and a PHY protocol type detection algorithm based on parsing the IEEE 802.11packets captured by the library Libpcap. The packet structure and the length of the frame preamble (18 or 26 bytes) are presented. Then the methods of transforming byte-order and resolving sub-fields are given. A detection algorithm of PHY protocol type is proposed based on the experiments and examples are given to verify these methods. This work can be a reference for the R & D related to link layer frame analysis.
Statistical Application in Economics  [PDF]
June Luo
Open Journal of Statistics (OJS) , 2012, DOI: 10.4236/ojs.2012.21013
Abstract: Statisticians have recently proposed some methods for ranking the gene variables with outlier expressions. The major attraction of these methods is their ability to select the variables which show systematic decrease or increase in only a subset of samples in the disease group. In order to fully account for the outliers, in this article, we truncate the expression values and propose an alternative method to rank the variables with systematic increase or decrease. The proposed statistic is very simple to implement. Simulations and real data study show that the proposed statistic has a more powerful ability to rank the variables than some methods in literature.
Construction of some families of 2-dimensional crystalline representations
Laurent Berger,Hanfeng Li,Hui June Zhu
Mathematics , 2003,
Abstract: We construct explicitly some analytic families of etale (phi,Gamma)-modules, which give rise to analytic families of 2-dimensional crystalline representations. As an application of our constructions, we verify some conjectures of Breuil on the reduction modulo p of those representations, and extend some results (of Deligne, Edixhoven, Fontaine and Serre) on the representations arising from modular forms.
A Gauss-Newton Approach for Nonlinear Optimal Control Problem with Model-Reality Differences  [PDF]
Sie Long Kek, Jiao Li, Wah June Leong, Mohd Ismail Abd Aziz
Open Journal of Optimization (OJOp) , 2017, DOI: 10.4236/ojop.2017.63007
Abstract: Output measurement for nonlinear optimal control problems is an interesting issue. Because the structure of the real plant is complex, the output channel could give a significant response corresponding to the real plant. In this paper, a least squares scheme, which is based on the Gauss-Newton algorithm, is proposed. The aim is to approximate the output that is measured from the real plant. In doing so, an appropriate output measurement from the model used is suggested. During the computation procedure, the control trajectory is updated iteratively by using the Gauss-Newton recursion scheme. Consequently, the output residual between the original output and the suggested output is minimized. Here, the linear model-based optimal control model is considered, so as the optimal control law is constructed. By feed backing the updated control trajectory into the dynamic system, the iterative solution of the model used could approximate to the correct optimal solution of the original optimal control problem, in spite of model-reality differences. For illustration, current converted and isothermal reaction rector problems are studied and the results are demonstrated. In conclusion, the efficiency of the approach proposed is highly presented.
Inhibition of Sp1 Functions by Its Sequestration into PML Nuclear Bodies
June Li, Wen-Xin Zou, Kun-Sang Chang
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0094450
Abstract: Promyelocytic leukemia nuclear bodies (PML NBs) are comprised of PML and a striking variety of its associated proteins. Various cellular functions have been attributed to PML NBs, including the regulation of gene expression. We report here that induced expression of PML recruits Sp1 into PML NBs, leading to the reduction of Sp1 transactivation function. Specifically, Chromatin immunoprecipitation (ChIP) assay demonstrated that induced expression of PML significantly diminishes the amount of Sp1 binding to its target gene promoter, immunofluorescence staining showed dramatic increase in the co-localization between PML and Sp1 upon induction of PML expression, moreover, PML and Sp1 co-fractionated in the core nuclear matrix. Our study further showed that PML promotes SUMOylation of Sp1 in a RING-motif-dependent manner, SUMOylation of Sp1 facilitates physical interaction between Sp1 and PML and recruitment of Sp1 into the PML NBs, the SUMO binding motif of PML was also important for its interaction with Sp1. The results of this study demonstrate a novel mechanism by which PML regulates gene expression through sequestration of the transcription factor into PML NBs.
Crosstalk between Platelets and the Immune System: Old Systems with New Discoveries
Conglei Li,June Li,Yan Li,Sean Lang,Issaka Yougbare,Guangheng Zhu,Pingguo Chen,Heyu Ni
Advances in Hematology , 2012, DOI: 10.1155/2012/384685
Abstract: Platelets are small anucleate cells circulating in the blood. It has been recognized for more than 100 years that platelet adhesion and aggregation at the site of vascular injury are critical events in hemostasis and thrombosis; however, recent studies demonstrated that, in addition to these classic roles, platelets also have important functions in inflammation and the immune response. Platelets contain many proinflammatory molecules and cytokines (e.g., P-selectin, CD40L, IL-1β, etc.), which support leukocyte trafficking, modulate immunoglobulin class switch, and germinal center formation. Platelets express several functional Toll-like receptors (TLRs), such as TLR-2, TLR-4, and TLR-9, which may potentially link innate immunity with thrombosis. Interestingly, platelets also contain multiple anti-inflammatory molecules and cytokines (e.g., transforming growth factor-β and thrombospondin-1). Emerging evidence also suggests that platelets are involved in lymphatic vessel development by directly interacting with lymphatic endothelial cells through C-type lectin-like receptor 2. Besides the active contributions of platelets to the immune system, platelets are passively targeted in several immune-mediated diseases, such as autoimmune thrombocytopenia, infection-associated thrombocytopenia, and fetal and neonatal alloimmune thrombocytopenia. These data suggest that platelets are important immune cells and may contribute to innate and adaptive immunity under both physiological and pathological conditions. 1. Platelets in Hemostasis and Thrombosis: Classical Role and Nonclassical Mechanisms Platelets, which were first identified around 130 years ago, are small anucleate cells circulating in the blood with a diameter of 1-2 microns [1–5]. They are the second most abundant cells, after red blood cells, in the blood circulation with a normal concentration of 150–400 × 109/L in humans. Platelets are produced from their precursor megakaryocytes in the bone marrow [4–8]; immature larger proplatelets are initially released by megakaryocytes into the blood due to local shear stresses in the bone marrow. These proplatelets may further mature in the lung, although the process is largely unknown [8, 9]. The major physiological role of platelets is to accumulate at sites of damaged blood vessel endothelium and initiate the blood clotting process. Platelet adhesion, activation, and subsequent aggregation at sites of vascular injury are critical to the normal arrest of bleeding [10–12]. When the vessel endothelium is injured, collagen and other subendothelial matrix proteins
The design, development and evaluation of a self-instructional module for nursing practice standards  [PDF]
June Anonson, Mary Ellen Walker
Open Journal of Nursing (OJN) , 2013, DOI: 10.4236/ojn.2013.38073

The purpose of this research was to improve nursing professionals’ understanding of the important link to safe, competent, and ethical practices that Nursing Practice Standards (NPS) serve. This research on NPS may improve the scope and comprehensiveness by which the Standards are integrated with clinical, educational, administrative, and research-based nursing practices. This research was unique in that it includes nurses in developing NPS. The method by which this study was done involved sixteen practicing nurses and seven instructional design experts from Alberta, Canada participating in designing, developing, and evaluating a NPS module. Nursing practice standards are a vital aspect of performing safe, efficient and effective patient care. The manner in which Nursing Standard Practices are presented and taught will directly influence a nurse’s ability to understand the value of NPS and successfully incorporate NPS into practice.

Analysis of CO2 Fluxes: Inclusion of Wall Conductance (Gw) on the Estimation of Rubisco Activity, Vcmax of Soybean Leaves
HAYATI Journal of Biosciences , 2011,
Abstract: In global change research, where modelling of CO2 fluxes from plants is an important component in determining vegetation capacity to protect the climate, mechanistic-based modelling is needed when projection of future CO2 absorption dynamics need to be estimated more accurately. Rubisco is the world’s most abundant protein in plants and has the job of uniquely preparing CO2 for chemical reduction. Rubisco activity in the leaf, described by Vcmax, can be estimated from gas exchange measurements of the initial slope of the response of CO2 assimilation rate, A, to intercellular [CO2]. This technique of estimation is favourable because it can avoid the uncertainties and difficulties when Vcmax is obtained directly by extraction and biochemical assay in artificial media. Rate of assimilation of soybean plants grown at different temperature (20/15, 25/20, and 32/27 oC day/night temperature) and [CO2] (350 and 700 mol mol-1), were measured using gas exchange. The effect of wall conductance (gw) on the parameterization of assimilations rate was observed. The temperature dependence of Vcmax depends strongly on wall conductance, where the shape of the curve would change significantly if finite wall conductance were included in the analysis. The implication is that it changes the values and interpretation of the temperature response of assimilation rate.
A Second Chance: The University of Cape Town's Diploma in Education
June Saldanha
Gateways : International Journal of Community Research & Engagement , 2009,
Abstract: This paper describes a curriculum that gives men and women from predominantly black working class communities a second chance to acquire a formal qualification at a higher education institution in South Africa. The curriculum provides the space for adult students to think critically about themselves and their practice and to develop a confident voice to express themselves. Through this process they develop both learner and educator identities and begin to see how the two intersect. The paper gives some of the historical background of the course, and shows how lecturers who have taught on the programme at different times have helped shape the curriculum. It goes on to discuss the changing nature of the student intake, the curriculum content and structure and ends with a discussion of the impact of the course, on students, staff and on the university as a whole. One very visible impact of the diploma is to be seen in the students who have gone on to acquire other postgraduate qualifications in adult education studies. On a university-wide level, through the involvement of adult education lecturers in other programmes and curricula, knowledge of and interest in adult learning is shared and encouraged.
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