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Search Results: 1 - 10 of 185460 matches for " Li-Li Chen "
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Technology Innovation Stratagem and Role Played by MNCs: Evidence from Chinese Pharmaceutical Sector  [PDF]
Li-Li Cao, Xiang-Dong Chen
Journal of Service Science and Management (JSSM) , 2008, DOI: 10.4236/jssm.2008.12017
Abstract: It is widely regarded that the pharmaceutical sector is quite different from other manufactures for its character in inno-vation activities. This paper analyzed the nature of innovation activities by multinational companies (MNCs), which stand for foreign capital, focusing on two parameters named: size and scope of innovation through investigating patent data from 1985 to 2005. The paper reveals the role of the foreign capital and identifies their technology stratagem by developing a tool named Double- S Matrix. Research finding indicates that foreign capitals play an important role on overall national innovative competitiveness in this sector. Implications from this research can be used as reference to policy makers and business companies in China.
Understanding the Lifestyle Correlates with Chronic Constipation and Self-Rated Health  [PDF]
Li-Li Chang, Yu-Chen Lin, Tsai Chang Lo, Ming-Chu Chen, Hsien-Wen Kuo
Food and Nutrition Sciences (FNS) , 2015, DOI: 10.4236/fns.2015.64040
Abstract: The objective of this study is to evaluate the healthy and unhealthy behaviors as risk factors for chronic constipation and self-rated health status. Eight hundred tenth students enrolled from a university in Miaoli city, Taiwan. Chronic constipation was assessed using Chinese questionnaire. Information of unhealthy and healthy lifestyles was interviewed by constructed questionnaire. Thirty-six percentage of university students were assessed as chronic constipation. Using multivariate logistic regression adjusted for age, sex, race and BMI, we found chronic constipation significantly correlated with frequency of consumption from snack, fast food, fried food, daily consumption of water, physical activity and junk food used as regular food. Moreover, these unhealthy behaviors significantly correlated with self-rated health status. Students with chronic constipation had poor self-rated health status. It is urgent to create healthy behaviors to reduce the risk for chronic constipation or upgrade self-rated health status in university students.
Development and evaluation of an appraisal form to assess clinical effectiveness of adult invasive mechanical ventilation systems
Hong Li, Li-Li Chen, Na Li
Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine , 2012, DOI: 10.1186/1757-7241-20-45
Abstract: An appraisal form was designed according to the effectiveness evaluation theory of the American Weapons Systems Effectiveness Industry Advisory Committee (WSEIAC) along with literature review and expert panel review. Content validity of the preliminary form was analyzed in a cohort of 200 patients. Exploratory and confirmatory factor analysis was used to assess appraisal form validity. Discriminate validity of different ventilation outcomes was analyzed by t test. Test/retest reliability and inter-scorer reliability were evaluated with 30 patients after a 2-week interval by Cronbach's alpha.Exploratory factor analysis showed eigenvalues for 3 dimensions (availability, dependability, capability) to be 7.85, 4.43, and 4.22, respectively. Cronbach’s α for internal consistency of the appraisal form was 0.957, and 0.922, 0.961 and 0.937, respectively, for the 3 dimensions. Test-retest reliability of 3 dimensions was 0.976, and 0.862, 0.857, 0.885, respectively. Intra-class correlation coefficient verified test-retest reliability; ICC 0.976 and 0.862, 0.857, 0.885 for 3 dimensions, respectively.The appraisal form for clinical effectiveness of adult invasive mechanical ventilation systems has high reliability and validity and may be used in clinical setting.


物理学报 , 1999,
Abstract: The usual formally variable separation approach is valid only for completely integrable models. In this paper, we extend the method to a nonintegrable generalized Hirota-Satsuma equations. Some new exact solitary wave solutions and periodic wave solutions of the equations are also obtained.
Egyptian Fractions with Restrictions
Yong-Gao Chen,Christian Elsholtz,Li-Li Jiang
Mathematics , 2011, DOI: 10.4064/aa154-2-1
Abstract: Let $T_o(k)$ denote the number of solutions of $\sum_{i=1}^k\frac 1{x_i}=1$ in odd numbers $11$ in $S(p_1, p_2,..., p_t)$ is more than 1. In this paper we study $T_o(k)$ and $T_k(p_1,..., p_t)$. Three of our results are: 1) $T_o(2k+1)\ge (\sqrt 2)^{(k+1)(k-4)}$ for all $k\ge 4$; 2) if the inverse sum of all elements $s_j>1$ in $S(p_1, p_2,..., p_t)$ is more than 1, then $T_k(p_1,..., p_t)\not= 0$ for infinitely many $k$ and the set of these $k$ is the union of finitely many arithmetic progressions; 3) there exists two constants $k_0=k_0(p_1,..., p_t)>1$ and $c=c(p_1,..., p_t)>1$ such that for any $k>k_0$ we have either $T_k(p_1,..., p_t)= 0$ or $T_k(p_1,..., p_t)>c^k$.
Bis[μ2-bis(diphenylphosphanyl)methane-κ2P:P′]bis(μ4-diphenylphosphinato-κ4O:O:O′:O′)bis[μ2-trifluoromethanesulfonato(0.546/0.454)]-κ2O:O′;κ2O:O-tetrasilver(I) acetonitrile disolvate
Li-ping Tang,Chen Jia,Li-li Huang,Jia-Li Xie
Acta Crystallographica Section E , 2011, DOI: 10.1107/s160053681102931x
Abstract: In the centrosymmetric tetranuclear title compound, [Ag4(C12H10O2P)2(CF3O3S)2(C25H22P2)2]·2CH3CN, the AgI atom is coordinated by one P atom from a bis(diphenylphosphanyl)methane (dppm) ligand, two O atoms from two diphenylphosphinate (dpp) ligands and one O atom from a trifluoromethanesulfonate (OTf) anion in a highly distorted tetrahedral geometry. Four AgI atoms are bridged by two dppm ligands, two dpp ligands and two OTf anions, forming a tetranuclear complex. An weak intramolecular Ag...Ag [3.2692 (14) ] interaction is observed. The OTf anion and one of the phenyl groups in the dppm ligand are disordered over two sets of positions in a 0.546 (4):0.454 (4) ratio. The 0.546-occupied OTf is bonded to two Ag atoms in a μ-(κ2O:O′) mode, while the 0.454-occupied OTf is bonded in a μ-(κ2O:O) mode. The methyl group of the acetonitrile solvent molecule is also disordered over two positions with equal occupancy factors.
Effect of Both Acid and Base Etching on Phosphate Laser Glass Surfaces
无机材料学报 , 2012, DOI: 10.3724/sp.j.1077.2012.00627
Abstract: The effect of chemical etching processes on phosphate laser glass surfaces was investigated. Under different process conditions (e.g. sonication and agitation), conventionally polished and subsequently washed phosphate glass plates were treated by submerging in both HCl and KOH solution either with or without BaCl2. Subsequently, Raman spectra and X―ray photoelectron spectroscope (XPS) of the treated surfaces were measured. The precipitation of metal cations and depolymerization of the glass network structure are the two main chemical reactions in both solutions: One refers to the substitution of P―O―H for P―O―M, the other is that the Q2 tetrahedra, the basic structural unit of the original metaphosphate glass, has gradually been replaced by the Q1 or Q0 tetrahedra. Finally, the reaction models of phosphate laser glasses dissolved in both HCl and KOH solution are proposed.
Security study of Web service composition

LI Xue-ming,CHEN Li-li,

计算机应用研究 , 2009,
Abstract: This paper studied the security issues on the Web service composition, described how to express security capability and constrains, improved a framework of a Web service security composition. At last,gave a detailed example to illustrate the working process of the model.
Prevalence of Osteoporosis and Its Associated Factors among Older Men with Type 2 Diabetes
Hai-ling Chen,Li-li Deng,Ju-fen Li
International Journal of Endocrinology , 2013, DOI: 10.1155/2013/285729
Bis[μ2-bis(diphenylphosphanyl)methane-κ2P:P′]bis(μ4-diphenylphosphinato-κ4O:O:O′:O′)bis(μ2-trifluoroacetato-κ2O:O′)tetrasilver(I) acetonitrile disolvate
Li-Li Huang,Chen Jia,Li-Ping Tang,Bai Jing
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811045466
Abstract: In the cation of the title compound, [Ag4(C2F3O2)2(C12H10O2P)2(C25H22P2)2]·2CH3CN, the two independent Ag+ cations are four-coordinated in a distorted tetrahedral geometry by one P atom from a bis(diphenylphosphanyl)methane (dppm) ligand, one O atom from a trifluoroacetate anion and two O atoms from two diphenylphosphinate (dpp) ligands. Two dppm ligands, two dpp ligands and two trifluoroacetate anions bridge four metal atoms, forming a centrosymmetric tetranuclear complex. Intramolecular C—H...O hydrogen bonds and a weak π–π interaction [centroid–centroid distance = 3.9804 (13) ] are also observed.
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