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Search Results: 1 - 10 of 33878 matches for " RONG He "
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Research on Downlink Precoding for Interference Cancellation in Massive MIMO Heterogeneous UDN  [PDF]
Hua He He, Jing Jiang, Rong Jin
Journal of Applied Mathematics and Physics (JAMP) , 2018, DOI: 10.4236/jamp.2018.61026
Abstract: In order to solve the data surge brought by largescale increasing of mobile de-vices, Massive MIMO ultra dense networking can greatly improve the system spectral efficiency and energy efficiency. It plays an important role in coping with the exponential growth of the business, but also brought big problems and challenges. For heterogeneous ultra dense networks, both macro and femto users are facing with both the cross-layer interference and co-layer in-terference. The precoding technology studied in this paper resolves the cross-layer interference and co-layer interference for macro users and femto users, and lays a theoretical foundation for the deployment of heterogeneous and ultra dense networks.
Study and Analysis of Meteorological Effect on Shanghai Sheshan National Tourist Resorts in Shanghai  [PDF]
Yuliang Rong, Xia Zhang, Qianshan He
Journal of Geoscience and Environment Protection (GEP) , 2017, DOI: 10.4236/gep.2017.57002
Abstract: In this paper, the main meteorological disasters in the Sheshan National Tourist and Vacation Areas are analyzed by using the climate data from 1955 to 2014, such as average temperature, relative humidity, wind speed, insolation duration. The influences of meteorological parameters on this area are studied with the climate comfort evaluation and meteorological disaster climate trend. It is found that the major meteorological disasters in this area including fog, typhoon, storm, wind, thunderstorms and high temperature, were occurred in different periods with higher frequency from May to October. Nineteen comfortable ten-day periods in a year are suitable for tourist activities, during March and May, late September and the end of December. And seventeen ten-day periods in a year are not suitable for tourist activities, from January to February and from June to the middle of September. Some suggestions for tourism weather service on the basis of these results are listed in the conclusion.
Some Results for the Family KKM(X,Y) and the Φ-Mapping in FC-Spaces
Rong-Hua He
ISRN Applied Mathematics , 2011, DOI: 10.5402/2011/696917
A Constraint-directed Local Search Approach to Nurse Rostering Problems
Fang He,Rong Qu
Electronic Proceedings in Theoretical Computer Science , 2009, DOI: 10.4204/eptcs.5.6
Abstract: In this paper, we investigate the hybridization of constraint programming and local search techniques within a large neighbourhood search scheme for solving highly constrained nurse rostering problems. As identified by the research, a crucial part of the large neighbourhood search is the selection of the fragment (neighbourhood, i.e. the set of variables), to be relaxed and re-optimized iteratively. The success of the large neighbourhood search depends on the adequacy of this identified neighbourhood with regard to the problematic part of the solution assignment and the choice of the neighbourhood size. We investigate three strategies to choose the fragment of different sizes within the large neighbourhood search scheme. The first two strategies are tailored concerning the problem properties. The third strategy is more general, using the information of the cost from the soft constraint violations and their propagation as the indicator to choose the variables added into the fragment. The three strategies are analyzed and compared upon a benchmark nurse rostering problem. Promising results demonstrate the possibility of future work in the hybrid approach.
Fixed Points and Existence Theorems of Maximal Elements with Applications in FC-Spaces
Rong-Hua He
ISRN Applied Mathematics , 2011, DOI: 10.5402/2011/673591
Mathematical Statistics Method of Evaluating Application Effects of a New Type of Gas Anchor  [PDF]
Jun Wang, Wen-He Li, Rong Zhong
Energy and Power Engineering (EPE) , 2015, DOI: 10.4236/epe.2015.77029
Abstract: Based on the basic formula of the confidence interval and the sampling error of mathematical statistics, the mathematical statistics method of evaluating application effects of a new type of gas anchor was given in this paper. By the method mentioned above, the confidence interval and the sampling errors of the relevant mean value differences of Daqing Oilfield S block’s 150 wells, according to the mean value differences of the liquid producing capacity per day, the oil production per day, the submergence depth of the 10 sampling test wells, in which before and after a new type of gas anchor were laid down, were calculated. The calculation results show that a new type of gas anchor has a better effect of increasing oil production of oil well and enhancing pump efficiency. Through the real value differences analysis of the liquid producing capacity per day, the oil production per day, the submergence depth of 150 wells mentioned above, in which before and after a new type of gas anchor were laid down, it was verified. By using the confidence interval and the sampling errors of the liquid producing capacity per day, the oil production per day, the submergence depth mentioned above, in which before and after a new type of gas anchor were laid down, the application effects of a new type of gas anchor could be evaluated. And a mathematical statistics method of evaluation application effects of a new type of gas anchor is presented.
Earthworm Protease
Rong Pan,Zi-Jian Zhang,Rong-Qiao He
Applied and Environmental Soil Science , 2010, DOI: 10.1155/2010/294258
Abstract: The alimentary tract of earthworm secretes a group of proteases with a relative wide substrate specificity. In 1983, six isozymes were isolated from earthworm with fibrinolytic activities and called fibriniolytic enzymes. So far, more isozymes have been found from different earthworm species such as Lumbricus rubellus and Eisenia fetida. For convenience, the proteases are named on the basis of the earthworm species and the protein function, for instance, Eisenia fetida protease (EfP). The proteases have the abilities not only to hydrolyze fibrin and other protein, but also activate proenzymes such as plasminogen and prothrombin. In the light of recent studies, eight of the EfPs contain oligosaccharides chains which are thought to support the enzyme structure. Interestingly, EfP-II has a broader substrate specificity presenting alkaline trypsin, chymotrypsin and elastase activities, but EfP-III-1 has a stricter specificity. The protein crystal structures show the characteristics in their specificities. Earthworm proteases have been applied in several areas such as clinical treatment of clotting diseases, anti-tumor study, environmental protection and nutritional production. The current clinical utilizations and some potential new applications of the earthworm protease will be discussed in this paper. 1. Introduction Earthworm has been recorded with a long history. Five hundred years ago, Shizhen Li compiled the famous medical book Compendium of Material, in which the earthworm (Earth dragon) was recorded as a drug prescribed for antipyretic and diuretic purposes in the form of dried powder in clinic. Now the remedy is still used in the folk. In the end of 19th century, Frédéricq [1] discovered one enzyme secreted from the alimentary tract of earthworm. Then several proteases were separated from the earthworm in 1920 [2]. They could dissolve casein, gelatin, and albumin. This was the preliminary research about the earthworm proteases. Large-scale research about earthworm protease began in 1980. Mihara et al. [3] isolated a group of proteases with fibrinolytic activity from the earthworm Lumbricus rubellus. Subsequently different purification methods were applied to isolate the enzymes, including gel filtration, affinity chromatography, ion exchanging chromatography, and high-pressure liquid chromatography (HPLC). More proteases have been obtained from different species, such as lumbrokinase [4], earthworm-tissue plasminogen activator [5], earthworm plasminogen activator [6–11], component A of EFE (EFEa) [12, 13], and biologically active glycolipoprotein
Evaluating Molecular Mechanism of Hypotensive Peptides Interactions with Renin and Angiotensin Converting Enzyme
Rong He, Rotimi E. Aluko, Xing-Rong Ju
PLOS ONE , 2014, DOI: 10.1371/journal.pone.0091051
Abstract: Our previous study showed that three rapeseed protein-derived peptides (TF, LY and RALP) inhibited the in vitro activities of angiotensin converting enzyme (ACE) and renin. Oral administration of these peptides to spontaneously hypertensive rats led to reductions in systolic blood pressure. In the present work, we examined the potential molecular mechanisms responsible for the ACE- and renin-inhibitory activities of these peptides. Enzyme inhibition kinetics showed competitive, non-competitive and mixed-type peptide-dependent inhibition of renin and ACE activities. Intrinsic fluorescence intensity data showed that LY and RALP have stronger binding effects on ACE molecule compared to that of TF. LY and RALP showed the highest inhibition of ACE and renin activities, respectively. Circular dichroism data showed that the inhibitory mechanism involved extensive peptide-dependent reductions in α-helix and β-sheet fractions of ACE and renin protein conformations. Molecular docking studies confirmed that the higher renin-inhibitory activity of RALP may be due to formation of several hydrogen bonds (H-bonds) with the enzyme’s active site residues. The rapeseed peptides inhibited renin and ACE activities mostly through binding to enzyme active site or non-active sites and forming extensive H-bonds that distorted the normal configuration required for catalysis. Data presented from this work could enhance development of highly potent antihypertensive natural peptides or peptidomimetics.
Magnetization of Nano-Size Subsystem in a Two-Dimensional Ising Square Lattice  [PDF]
Liang-Ming He, Rong Wang, Cai-Liu Yin, San-Jun Peng, Dong Qian
World Journal of Condensed Matter Physics (WJCMP) , 2012, DOI: 10.4236/wjcmp.2012.24029
Abstract: A two-dimensional Ising square lattice is modeled as a nano-size block array to study by Monte Carlo simulation the magnetic thermal stability of nano-structure magnetic media for data storage, thereon in the blocks J1 > 0 is assigned for the interaction of a pair of nearest-neighbor spins, while 0 J0 J1 for that in regions between the blocks and (J0 + J1)/2 for the nearest-neighbor pairs with one in the block and the other one out of but near-most the block. We show that the magnetic thermal stability of the block accrues with the increase of J1 and with the decrease of J1 - J0 for a given J1, but contrarily, the anchoring ability for the initial magnetic orientation in nano-size block trails off as J1 - J0 diminish. This phenomena and size dependence of such anchoring ability are discussed in detail.
Some Maximal Elements' Theorems in FC-Spaces
Rong-Hua He,Yong Zhang
Journal of Inequalities and Applications , 2009, DOI: 10.1155/2009/905605
Abstract: Let I be a finite or infinite index set, let X be a topological space, and let (Yi,φNi)i∈I be a family of FC-spaces. For each i∈I, let Ai:X→2Yi be a set-valued mapping. Some new existence theorems of maximal elements for a set-valued mapping and a family of set-valued mappings involving a better admissible set-valued mapping are established under noncompact setting of FC-spaces. Our results improve and generalize some recent results.
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