The Affection of Learning Mechanism to Unequal Strategic Alliance Partnership

Some symmetric mathematical models, such as Tech-Tech or Tech & Market - Tech & Market, had been set up in the researches of theoretical models of cooperative behavior among firms in strategic alliances. An asymmetric model is established in this paper by discussing the Tech-Market type strategic alliances and expressing the strength contrast between the partners in an alliance by the Bass diffusion models. The benefits changes of alliances partners are studied in several different occasions, and the model about the influences of learning upon partnership is built by introducing the learning mechanism to retrofit the Bass models. Then it is proved that the learning mechanism possesses strategic significance to the partnership, that is to say, the development of an alliance is beneficial to the partner who has higher learning efficiency and unfavorable to the other one. At the same time, the original cause of the strategy, i.e., gaining foreign investment and technology by let foreign firms own some domestic market share, was not work well in last ten years in China, has been revealed. It is pointed out that China's firms should do their best to improve their learning efficiency when they participate in the international alliances.     

Fisher discriminant analysis model for selecting the retaining structure type of deep foundation pit

Aiming at the problem of traditional evaluation methods of deep foundation pit for selecting the retaining structure type, based on the statistical theory and following the principle of security, economic and reasonable, a Fisher discriminant analysis(FDA) model for selecting the retaining structure type for deep foundation pit is established. 10 selected indicators which influence selection of deep excavation program are taken into account as discriminant factors, and the supporting schemes for deep foundation pit are classified into 5 groups, viz. gravity of the cement-soil type, soil nailing wall, pile anchors, pile supports and underground continuous wall. After training and testing 64 sets of measured data, the discriminant functions of FDA are solved, the re-substitution method is introduced to verify the stability of FDA model and the ratio of mis-discrimination is 14.1%. Another 10 groups of measured data are tested as forecast samples by the proposed model, and the correct rate is equal to 100%. Therefore, the feasibility of the proposed model is validated. Moreover, the proposed model is adopted for the New World Center Project in China, and the prediction results are in line with the artificial neural network(ANN) and the actual situation. The result shows that the deep foundation pit supporting structure lectotype decision of FDA model has excellent discriminant performance and the resubstitution error rate is low. It is easy and efficient to make discriminant analysis using this model and it provides efficient method to select deep excavation retaining structure and a practical new approach to choose the structural type of deep foundation pit optimization.     

台湾省水资源状况与农田水利事业

水是人类生活和社会发展不可缺少的重要资源，尤其在工业化进程加速和生活用水迅速增长的情况下，水的供应问题可能成为各个产业以至社会发展的限制因素。因此，水资源的有效维护和合理调配利用，已引起普遍关注。一、台湾省水资源及其供需概况台湾省的雨量，甚称丰沛。全...     

Bearing Capacity of the External-Prestressed Bird-Shape Plates

The architectural creation has been suspected as ostentation in some degree since the setup of theory on modernistic architectural art creation. In the controversy of miscellaneous theories, we are in face of the new challenge in the 21st century. It is an important task in the new century that how to avoid impairment on the personal initiation in face of the impact of new technology or IT. Based on the philosophy of architectural art, the situation and the characteristics of architectural creation at present were analyzed in this paper. The freedom of individual creation without restriction by any code is advocated here, which will make the thoughts of architectural creation vivid in the 21st century.     

长江口崇明岛土地利用方式对滨海土壤中重金属和砷的分布和形态特征的影响

The reclamation of tidal flats has been one of the important approaches to replenish the arable lands in the coastal areas; pollution status of reclaimed soils has received wide attention recently, especially for the study of heavy metals due to the relative high pollutant concentrations in wetlands. To understand the impact of land use change on heavy metal and arsenic(As) geochemistry by the reclamation of wetlands for agriculture, surface soils and soil profiles were collected from the agricultural land reclaimed in the 1990 s and the intertidal flat wetland at Dongtan on Chongming Island in the Yangtze River Estuary, China. The soil samples were analyzed for total concentrations and chemical speciation of chromium(Cr), zinc(Zn), copper(Cu), lead(Pb), nickel(Ni), cadmium(Cd) and As using inductively coupled plasma mass spectrometry(ICP-MS). Results showed that soil properties(salinity, total organic carbon and grain-size distribution) and the concentrations of heavy metals and As in the soils differed under the different land use types. The conversion of wetland to forest had caused obvious losses of all the measured heavy metals. In paddy field and dryland with frequent cultivation, the concentrations of Cr, Zn, Cu, Ni and As were higher when compared to forest land which was disturbed rarely by human activities. Speciation analysis showed that Cr, Zn, Cu, Ni and As were predominated by the immobile residual fraction, while Pb and Cd showed relatively higher mobility. In general, metal(except Ni) and As mobility decreased in the following order: wetland dryland ≥ paddy field forest land, which suggested that the reclaimed soils had lower metal and As mobility than the intertidal flat wetland. The results of this study contribute to a better understanding of the effects of land use on heavy metals and As in the reclaimed soils of the study area and other similar coastal areas.     

Research on the Primary Productive Force and Model of the Shuanglong Lake

The Shuanglong-lake is a shallow lake in the urban area, once it had been a serious typical eutrophic lake. After comprehensive harnessing, the water quality of the lake has been improved greatly. By testing the distribution of its primary productive for     

Fine mapping and transcriptome sequencing reveal candidate genes conferring all-stage resistance to stripe rust on chromosome arm 1AL in Chinese wheat landrace AS1676

Stripe rust, caused by Puccinia striiformis f. sp. tritici(Pst), threatens wheat production worldwide, and resistant varieties tend to become susceptible after a period of cultivation owing to the variation of pathogen races. In this study, a new resistance gene against Pst race CYR34 was identified and predicted using the descendants of a cross between AS1676, a highly resistant Chinese landrace, and Avocet S, a susceptible cultivar. From a heterozygous plant from a F7recombinant inbred line(RI...