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Search Results: 1 - 10 of 32831 matches for " Tao Qing "
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Pace of Expansion and FDI Performance: The Case of Auto FDIs in China  [PDF]
Qing Jiu Tao, Rui Hua Jiang
American Journal of Industrial and Business Management (AJIBM) , 2014, DOI: 10.4236/ajibm.2014.410067
Abstract:

How fast do firms expand in a foreign market after their initial entry? Is faster better? Under what conditions is it beneficial or detrimental for a firm to move fast in a foreign market? This paper attempted to answer these questions by investigating the relationship between a firm’s pace of post-entry foreign expansion and its market share performance in a foreign market. The study is an attempt at filling a gap in the existing international business literature. Numerous researches have studied various point-of-entry decisions such as why (motivations), how (entry modes), where (location choices), and when (entry timing) firms make foreign entries. Studies have also investigated the consequences of internationalization, i.e., the relationship between degree of internationalization and firm performance. However, little is known about what happens after initial entry into a foreign market and before firms reach a certain degree of international diversity. As a step towards understanding the internationalization process, this study explores one important characteristic of post-entry foreign expansion—pace of expansion and its performance implications. Opposing hypotheses are developed from the perspectives of industrial organizational economics, and that of organizational learning, the resource-based view of the firm, and internationalization theory. The post-entry experiences of 214 foreign firms in China’s automobile market were examined in our sample. Results from multivariate regression show that greater firm performance is associated with greater expansion frequency and expansion magnitude. Furthermore, we found the inverted U shape relationship between expansion frequency and firm performance. J-shaped relationship between expansion magnitude and firm performance was also identified. We conclude this paper with implications for theory, research and management practice.

Semi-regular Relative Difference Sets with Large Forbidden Subgroups
Tao Feng,Qing Xiang
Mathematics , 2008,
Abstract: Motivated by a connection between semi-regular relative difference sets and mutually unbiased bases, we study relative difference sets with parameters $(m,n,m,m/n)$ in groups of non-prime-power orders. Let $p$ be an odd prime. We prove that there does not exist a $(2p,p,2p,2)$ relative difference set in any group of order $2p^2$, and an abelian $(4p,p,4p,4)$ relative difference set can only exist in the group $\Bbb{Z}_2^2\times \Bbb{Z}_3^2$. On the other hand, we construct a family of non-abelian relative difference sets with parameters $(4q,q,4q,4)$, where $q$ is an odd prime power greater than 9 and $q\equiv 1$ (mod 4). When $q=p$ is a prime, $p>9$, and $p\equiv$ 1 (mod 4), the $(4p,p,4p,4)$ non-abelian relative difference sets constructed here are genuinely non-abelian in the sense that there does not exist an abelian relative difference set with the same parameters.
Strongly Regular Graphs From Unions of Cyclotomic Classes
Tao Feng,Qing Xiang
Mathematics , 2010,
Abstract: We give two constructions of strongly regular Cayley graphs on finite fields $\F_q$ by using union of cyclotomic classes and index 2 Gauss sums. In particular, we obtain twelve infinite families of strongly regular graphs with new parameters.
Cyclotomic Constructions of Skew Hadamard Difference Sets
Tao Feng,Qing Xiang
Mathematics , 2011,
Abstract: We revisit the old idea of constructing difference sets from cyclotomic classes. Two constructions of skew Hadamard difference sets are given in the additive groups of finite fields using unions of cyclotomic classes of order $N=2p_1^m$, where $p_1$ is a prime and $m$ a positive integer. Our main tools are index 2 Gauss sums, instead of cyclotomic numbers.
Paley type group schemes from cyclotomic classes and Arasu-Dillon-Player difference sets
Yu Qing Chen,Tao Feng
Mathematics , 2012,
Abstract: In this paper, we present constructions of abelian Paley type group schemes by using multiplicative characters of finite fields and Arasu-Dillon-Player difference sets. The constructions produce many new Paley type group schemes that were previous unknown in our classification of Paley type group schemes in finite fields of small orders.
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.
Long-Term Treatment with a Compound Polysaccharide-Based Health Product (Infinitus Polysac Plus) Enhances Innate and Adaptive Immunity in Mice  [PDF]
Hoi-Yan Leung, Chung-Wah Ma, Qing Tao Tang, Kam-Ming Ko
Chinese Medicine (CM) , 2011, DOI: 10.4236/cm.2011.24028
Abstract: This study aimed to investigate the effects of a compound polysaccharide-based health product (Infinitus Polysac Plus, IPP) on innate and adaptive immunity in mice. Both ex vivo/in vivo mouse models and an in vitro system using cultured mouse splenocytes were adopted for the assessment of innate and adaptive immunity. For the innate immune response, long-term IPP treatment (0.26 and 0.78 g/kg * 20 doses) enhanced the carbon clearance activity and phagocytic rate of macrophages, as well as natural killer cell activity in mice. The IPP-induced increase in natural killer cell activity was accompanied by the suppression of tumor growth in Sarcoma-180 cell-inoculated mice. For the adaptive immune response, while long-term IPP treatment increased the splenocyte index in mice, IPP incubation with mouse splenocytes in vitro potentiated their concanavalin A-stimulated proliferation. Long-term IPP treatment significantly restored the hemolytic activity of serum on sheep red blood cells and dinitrofluorobenezene-induced delayed-type hypersensitivity in sensitized and immunosuppressed mice. In conclusion, the results indicate that long-term IPP treatment produces stimulatory effects on both innate and adaptive immunity in mice.
Integrating Webquest into Chemistry Classroom Teaching to Promote Students’ Critical Thinking  [PDF]
Qing Zhou, Leilei Ma, Na Huang, Qian Liang, Huiji Yue, Tao Peng
Creative Education (CE) , 2012, DOI: 10.4236/ce.2012.33058
Abstract: The WebQuest is a student-centered, inquiry-oriented and project-based approach for teaching and learning that students use Web resources to learn school topics. This article reports on the design, implementation and evaluation of a WebQuest teaching approach for chemistry classroom teaching in improving the critical thinking of high school students. A pre- and post-test design was used where 4-month long-term WebQuest teaching approach with five chemical topics was offered to 50 high school students aged ranged from 16 to 17 years in Xidian Middle School attached to Xidian University in Shaanxi province of China. The California Critical Thinking Disposition Inventory (CCTDI) and the California Critical Thinking Skills Test (CCTST) were employed as data collection tools. Both CCTDI and CCTST scores of the participants showed significant differences (p < 0.05) between before and after WebQuest learning. The subscale scores of CCTDI showed significant differences in all aspects of dispositions toward critical thinking except open-mindedness and maturity. For CCTST subscales, the scores showed significant differences in analysis and evaluation but in inference. These findings add to the evidence that integrating Webquest into science classroom teaching might be an effective way to develop high school students’ critical thinking.
Analysis of Nonpolar Components from Ginseng of Different Ages  [PDF]
Yizhen Zhang, Xunan Lyu, Tao Liu, Jianping Luo, Wenju Zhang, Qing Mu
American Journal of Plant Sciences (AJPS) , 2013, DOI: 10.4236/ajps.2013.41014
Abstract: Nonpolar components from ginseng of different ages were extracted and analysed using a GC-MS technique to determine their chemical compositions. In total, 23 ingredients, mostly aliphatic compounds, were identified. The compounds extracted included 10,12-octadecadiynoic acid (12.81% - 36.43%), falcarinol (4.95% - 36.79%), n-hexadecanoic acid (0.60% - 9.70%), 9,12-octadecadienoic acid, ethyl ester (0.33% - 5.63%), 5,7-dodecadiyn-1,12-diol (0.97% - 3.85%), (Z)-9-octadecenamide (2.66% - 5.38%) and (Z,Z)-9,12-octadecadienoic acid (0.46% - 5.27%). The two major diyne compositions, falcarinol (8) and 10,12-octadecadiynoic acid (12), were the predominant components (over 50%) of the nonpolar extract of older ginseng. Moreover, the 10,12-octadecadiynoic acid obviously accumulated as the ginseng grew. Sitosterol, a universal metabolite in higher plants, makes up 55.80% of the content of 6-year-old ginseng, but markedly decreases in older ginseng. There was not much difference between the extracts of 8, 10, 12 and 16-year ginsengs, but the extracts of 6-year-old ginseng were distinctive.
Function of A-Rich region in DNAβ associated with Tomato yellow leaf curl China virus
Xiaorong Tao,Ling Qing,Xueping Zhou
Chinese Science Bulletin , 2004, DOI: 10.1360/04wc0132
Abstract: A novel type of circular single-stranded satellite DNA, known as DNAβ, was recently characterized and demonstrated to be associated with monopartite begomoviruses. DNAβ was essential for induction of characteristic symptoms in plants. DNAβ has three structural features: an 115 bp highly conserved region, βC1 gene and A-Rich region. The in-frame ATG mutation of βC1 gene of Tomato yellow leaf curl China virus isolate Y10 (TYLCCNV-TY10) DNAβ demonstrated that βC1 gene is required for leaf curl symptom. Here, the function of A-Rich region in TYLCCNV-Y10 DNAβ was identified. When A-Rich region was deleted, the A-Rich deleted mutant was still capable of replication and systemic infection in plant, indicating that A-Rich region is not required for trans-replication of DNAβ. The immunotrapping-PCR demonstrated that A-Rich deleted mutant could be encapsidated in the coat protein encoded by TYLCCNV-Y10 DNA-A, suggesting that A-Rich region is not related with DNAβ encapsidation. However, the A-Rich region deleted mutant caused milder symptom.
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