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Search Results: 1 - 10 of 35016 matches for " CAO Yong "
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Study on the Advance Payment Rate of Advance-Payment Collection Business Based on Logistics Financial  [PDF]
Weiguo Cao, Yong Zhang
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.37B010

This paper takes the advance-payment collection business based on the logistics financial as the research object, on the assumption that the logistics enterprises pay the price with their own money,and the shipper repurchases the goods unconditionally when the delivery breaks rule. From the point of logistics enterprises to quantitative analyze its key indicators of risk management and control - advance payment rate, expectations for providing a scientific basis of decision making for the business risk of logistics enterprises in China, in order to solve the outstanding contradictions between a lot of money tied up in inventory and difficulties in financing of SMEs,and provide a decision support from the side of  management techniques.

Application of Wu’s Method to Proving Total Correctness of Recursive Program
Yong Cao
Information Technology Journal , 2010,
Abstract: Software testing can find errors, but can not find them absent. Because program verification can provide this guarantee, it has arguably been one of the most fertile application areas of formal methods and becomes more and more important in software development. Proving the correctness of a program entails showing that if the program is initiated from a machine state satisfying a certain precondition then the state on termination satisfies some desired post-condition. The emphasis was put on formal verification in program proving previous. If we can algebraize program proving, the correctness proving can be mechanized and automated easily and the efficiency of proving can be also improved greatly. Wu’s method has been shown to improve efficiencies in mechanical geometry theorem proving, where it can replace the well-known Grobner basis method. It seems to have promise to bring the powerful mathematical machinery to settle the program total correctness problem. This study applies Wu’s characteristic set method and mathematical induction to proving the total correctness of recursive program. Our method is based on the algebraic theory of polynomial set, which have wider application domain. We implement this method with the computer algebra tools MMP. The application of the method is demonstrated on a few examples. Compared with proving tool Isabelle, our method is more efficient through experiments and greatly improves the efficiency of proving especially in polynomial program. In this way, an algebraic approach based on mathematics mechanization is introduced to software verification. A new idea for program correctness proving is proposed in this study.
Does Inside Trading Affect Managers’ Decision-Making? A Theoretical Investigation  [PDF]
Ning Cao, Shanmin Li, Yong Li
Journal of Mathematical Finance (JMF) , 2015, DOI: 10.4236/jmf.2015.54030

This paper analyzes how inside trading affects managers’ decision-making and also examines the effect of the social relations on managers. Through model analysis, the paper shows that inside trading does affect managers’ behavior. Inside trading lowers the managers’ minimum requirements for risky projects and thus has a risk-reduction effect on managers. In some cases, the existence of inside trading makes managers select projects with negative returns, which results in agency problems. When managers try to consolidate their social networks by divulging inside information, agency problems are exacerbated. This paper also analyzes the degree of risk aversion. As the degree of a manager’s risk aversion increases, the risk-reduction effect of inside trading is reduced.

From Disorder to Order  [PDF]
Xiaoguang Yue, Yong Cao, Michael McAleer
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.62032
Abstract: In the physical and social sciences, and especially in physics and economics, respectively, order and disorder (alternatively, equilibrium and disequilibrium in economics) refer to the presence or absence of some symmetry or correlation in a many-particle system. It follows that it is important to examine whether there is any regularity hidden in the phase transition of the disorder-order relationship. In this paper a series of experiments are devised and executed to reveal the power law relationship between order and disorder, and to determine that the power law is indeed an important regular pattern in the phase transition from disorder to order.
Impacts of Changes in Sea Ice and Heat Flux on Arctic Warming  [PDF]
Yong Cao, Lingen Bian, Jinping Zhao
Atmospheric and Climate Sciences (ACS) , 2019, DOI: 10.4236/acs.2019.91006
Abstract: The reduction of Arctic sea ice has enhanced the sea-ice-air interaction in the Arctic atmospheric boundary layer, especially the increase in sea-air heat flux in autumn. Changes in radiation and heat flux and the role of sea-ice-air interactions in climate change in the central Arctic were analyzed and evaluated on the basis of the observation data of ice stations during the six Chinese Arctic Research Expeditions. The albedo is high in the Arctic sea-ice surface except the melting process. Overall, the Arctic sea-ice surface can absorb radiation energy, which is much lower than that absorbed by mid-latitude surfaces. Consequently, a relatively weak turbulence exchange occurred between the sea-ice surface and the atmosphere. Further estimates of the surface heat budget in the Arctic are obtained using eddy correlation and flux-profile method. The results are representative of the heat balance and ice-air interactions in the central Arctic Ocean. In the Arctic, changes in heat flux displayed notable interdecadal characteristics, similar to the change of sea-ice extent. The heat flux in September of each year in 2001-2014 was considerably higher compared with that in 1979-2000, particularly at the edges of the central Arctic Ocean. In September of each year in 1979-2014, the sea-ice extent was remarkably negatively correlated to the heat flux (sensible heat flux + latent heat flux), and the heat flux was considerably positively correlated to the atmospheric temperature at 2 m above sea level. This result demonstrates that a reduction of Arctic sea ice will lead to changes in heat flux, thereby warming the atmosphere and increasing the temperature of the atmospheric boundary layer over the Arctic. In addition, this impact is long-lasting.
Immune activation of erythroleukemia cells induced by interleukin 12
Yong Zhao,Xuetao Cao
Science China Life Sciences , 1998, DOI: 10.1007/BF02895109
Abstract: To investigate the antitumor activity of IL-12, the induction of differentiation of IL-12 was observed using erythroleukemia cells (FBL-3) as model. After incubation with 200 U/mL IL-12 for 48 h, DNA synthesis of FBL-3 cells in S phase decreased significantly; the expression of CD14 which is the specific marker of monocyte increased, the rate of NBT+ cells was apparently higher than that of the untreated FBL-3 cells. After treating FBL-3 cells with IL-12 for 72 h, the expression of 33D1 and NLDC145 which are the specific markers of dendritic cells increased markedly, the surface molecules such as MHC-11, B7-1, B7-2, and VCAM-1 were up-regulated; morphological observation showed two kinds of cells: some cells had a ruffled surface and plentiful lysosome; the others had many dendritic projections on the surface, and contained numerous mitochondria. Functionally, the IL-12-treated FBL-3 cells could apparently stimulate the proliferation of allogeneic and autologous T lymphocytes, and improve the specific cytotoxic activity of CTL on FBL-3 cells. These results indicated that erythroleukemia cells were induced by IL12 to differentiate into the monocytes and dendritic cells, then exhibited the antigen-presenting function. The data outline a new mechanism for IL-12 to treat leukemia.
Effects of Wenshen Jianpi Recipe on chronic wound healing in rats
CAO Yong-Qing
Zhong Xi Yi Jie He Xue Bao , 2005,
Abstract: Objective: To study the effects of Wenshen Jianpi Recipe (WSJPR, a traditional Chinese medicine for warming kidney and invigorating spleen) on chronic wound healing and the mechanism. Methods: Ninety-six SD rats were randomly divided into 4 groups, with 24 rats in each group, and back wound was made in the rats. For rats in 3 of the 4 groups, hydrocortisone injection was administered to induce chronic wound. Rats in 2 of the 3 groups were treated with WSJPR and Xinpukang Granules (XPKG) respectively, and the rats in the other group were untreated. The rats in the fourth group were taken as control. The wound healing time and the width of new epidermis were observed, and the histomorphological changes and cell cycle of the granulation tissue, and the protein expressions of epidermal growth factor (EGF), transforming growth factor-β1 (TGF-β1) and fibronectin (FN) in the granulation tissue were tested with immunohistochemical technique and flow cytometry. Results: The wound healing time of the WSJPR-treated and XPKG-treated groups was (17.0±1.9) and (18.8±1.9) d respectively, much shorter than that of the untreated and control groups (P<0.05). On the 14th experiment day, the width of new epidermis of the WSJPR-treated and XPKG-treated groups was (3.73±0.19) and (3.21±0.15) mm respectively, much wider than that of the untreated and control groups (P<0.05). The numbers of angiogenesis, fibroblasts and cells in the S phase in WSJPR-treated and XPKG-treated groups were much higher than those in the untreated and control groups (P<0.05). Compared with the untreated and control groups, the protein expressions of EGF, TGF-β1 and FN in WSJPR-treated and XPKG-treated groups were higher (P<0.05). Conclusion: WSJPR can enhance the wound healing. It was likely through accelerating the cell proliferation and up-regulating the expressions of EGF, TGF-β1 and FN.
Properties for CD Inequalities with Unbounded Laplacians
Cao Gong,Yong Lin
Mathematics , 2015,
Abstract: The CD equalities were introduced to imply the gradient estimate of laplace operator on graphs. This article is based on the unbounded Laplacians, and finally concludes some equivalent properties of the CD(K,$\infty$)and CD(K,n).
β-cyclodextrin Covalently Functionalized Single-Walled Carbon Nanotubes: Synthesis, Characterization and a Sensitive Biosensor Platform  [PDF]
Yong Gao, Yu Cao, Guiling Song, Yiming Tang, Huaming Li
Journal of Biomaterials and Nanobiotechnology (JBNB) , 2011, DOI: 10.4236/jbnb.2011.24055
Abstract: In this study, we presented the preparation of β-cyclodextrin (β-CD) covalently functionalized single-walled carbon nanotubes (SWCNTs) and its application in modifying the solid glass carbon electrode (GCE). Cyclic voltammetry (CV) method was employed to evaluate the performance of the modified GCE. Solubility experiment indicated the conjugation of SWCNTs and β-CD, SWCNTs-β-CD with 8 wt% β-CD content could be well dispersed in water. High-resolution transmission electron microscopy (HRTEM) demonstrated that the aggregated SWCNTs bundle were effectively exfoliated to small bundle, even individual tube. The β-CD component was grafted on the side walls as well as tips of SWCNTs, and the grafted β-CD component was not uniformly coated on the surface of SWCNTs. The CV measurements indicated the performance of the GCE modified by SWCNTs-β-CD was better than that of the GCE modified by the hybrid of SWCNTs/β-CD, where ascorbic acid (AA) and uric acid (UA) were selected as a prelimiltary substrate to evaluate it. The enhanced performance of the modified GCE should be ascribed to the integration of the excellent electrocatalytic property of SWCNTs with the inclusion ability of β-CD to analyte molecule.
Study on the Surface Acoustic Wave Sensor with Self-Assembly Imprinted Film of Calixarene Derivatives to Detect Organophosphorus Compounds  [PDF]
Bing-Qing Cao, Qi-Bin Huang, Yong Pan
American Journal of Analytical Chemistry (AJAC) , 2012, DOI: 10.4236/ajac.2012.39087
Abstract: The molecularly imprinted technology and the self-assembly technique were used together on the calixarene surface acoustic wave (SAW) chemical sensors to detect organophosphorus compounds. 25-(thioalkyl-alkoxy)-p-tertbutylcalix[4] arene with self-assembled monolayer character was the sensitive coating of the sensors. The sensors had a special response to organophosphorus compounds and the response frequency shift of this sensor to organophosphorus compounds in 0.1 mg/m3 was 350 Hz. The response frequency increased linearly with the increase of the concentration of DMMP in the range from 0.1 to 0.6 mg/m3. The possible explanation of the interaction between the coatings and organophosphorus compounds was discussed.
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