Zhang X.,Yili Teachers College |
Zhang Y.,Nanjing University |
Gao Y.,Nanjing University
Shuju Caiji Yu Chuli/Journal of Data Acquisition and Processing | Year: 2015
Density-based spatial clustering of applications with noise (DBSCAN) has poor scalability on the data size, especially when the amount of data increases. Here an improved adaptive fast-density-based spatial clustering of applications with noise (F-DBSCAN) algorithm is proposed, with no longer checks of the objects inside the neighborhood of core objects, but just the mark of them. Merging clusters is performed by determining whether there exist the marked objects in the neighborhood of core objects. Noisy objects are recognized by checking whether the neighborhood of border ones contains a core ones. The proposed algorithm can avoid the repeated checking of overlapping area of the original DBSCAN without building the spatial index, thus improving its efficiency substantially with time complexity approaching O(nlogn). The clustering quality of F-DBSCAN is validated on both artificial and real datasets, and its efficiency is also validated on two real datasets from different industries. The empirical results suggest that F-DBSCAN can achieve good clustering quality as well as better efficiency and scalability. ©, 2015, Journal of Data Acquisition and Processing. All right reserved.
Niki T.,Japan National Agriculture and Food Research Organization |
Niki T.,University of Tsukuba |
Mahesumu T.,Yili Teachers College |
Nishijima T.,Japan National Agriculture and Food Research Organization |
Nishijima T.,University of Tsukuba
Journal of the Japanese Society for Horticultural Science | Year: 2013
Several morphological changes in flowers can be induced in torenia (Torenia fournieri L.) by applying forchlorfenuron (CPPU) to flower buds. We investigated the temporal and spatial distributions of the cytokinin response in CPPU-treated flower buds, which is indicated by type-A response regulator (RR) and cytokinin oxidase (CKX) gene expression. The quantitative real-time PCR analysis showed that the expression of both T. fournieri RR1 (TfRR1) and TfCKX5 was induced from 1 day after CPPU treatment in the sepal, petal, stamen, and pistil, and maintained at a high level until 5 days after the treatment, when the earliest morphological changes due to CPPU treatment were observed. In situ hybridization analysis showed weak expression of both genes in the stamen and pistil through all floral stages of non-treated flower buds. However, when CPPU was applied at the sepal development stage, expression of both genes was strongly induced in the abaxial side of the stamen primordia, which is the site of initiation of the wide paracorolla. When CPPU was applied during the early stage of corolla development, high expression of those genes was observed in the stamen, basal, and middle part of the petal, which is the site of initiation of the narrow paracorolla. Those high levels of expression became more strongly localized to the paracorolla initiation site once the paracorolla primordia formed. When CPPU was applied during the middle corolla development stage, strong expression of those genes was detected in the middle to apical parts of the petal, which is the site of changes in the distribution pattern of the vascular bundles and the resultant serrated margin. These results suggest that long-term elevation of cytokinin signaling caused by CPPU treatment induces changes in flower morphology, and the paracorolla and serrated margin of the petal are induced by localized high levels of cytokinin signaling at the site of those morphological changes within flower buds. © 2013 JSHS.
Yin G.X.,Yili Teachers College
2011 2nd International Conference on Artificial Intelligence, Management Science and Electronic Commerce, AIMSEC 2011 - Proceedings | Year: 2011
The system is an open one and the examination topics databases can be browsed, appended and edited by users, the contents of the topics can be anything which can be recognized and accepted by application Word; This system can create examination topics Databases for many different curricula and manage their own databases by users using its corresponding functions; All the automatically saved examination papers can create a examination paper databases gradually and this makes it possible for users to choose a paper from it for exam directly (can edit it if necessary); Choosing topics can be done both manually and can be done automatically, randomly according to the given conditions too. In the end examination paper is created in a Word document. The contents of the topics are inputted through application Word window. On Windows 98/2000 platform the current examination paper topics Databases System is developed by Visual basic 6.0 and OLE technology.The version 1.0 of the system has been patented nationally, applied in teaching area and works well. © 2011 IEEE.
Wang X.,China Environmental Science Research Institute |
Wang X.,Yili Teachers College |
Guo Y.,China Environmental Science Research Institute |
Liu J.,China Environmental Science Research Institute |
And 2 more authors.
Journal of Environmental Management | Year: 2010
The study is directed to the use of non-metallic powders obtained from comminuted recycled paper-based printed circuit boards (PCBs) as an additive to polyvinyl chloride (PVC) substrate. The physical properties of the non-metallic PCB (NMPCB) powders were measured, and the morphological, mechanical and thermal properties of the NMPCB/PVC composite material were investigated. The results show that recycled NMPCB powders, when added below a threshold, tended to increase the tensile strength and bending strength of PVC. When 20 wt% NMPCB powders (relative to the substrate PVC) of an average diameter of 0.08 mm were added, the composite tensile strength and bending strength reached 22.6 MPa and 39.83 MPa, respectively, representing 107.2% and 123.1% improvement over pure PVC. The elongation at break of the composite material reached 151.94% of that of pure PVC, while the Vicat softening temperature of the composite material did not increase significantly compared to the pure PVC. The above results suggest that paper-based NMPCB powders, when used at appropriate amounts, can be effective for toughening PVC. Thus, this study suggests a new route for reusing paper-based NMPCB, which may have a significant beneficial environmental impact. © 2010 Elsevier Ltd.
Yin G.X.,Yili Teachers College
Advanced Materials Research | Year: 2013
A icon can be located by its coordinates in the window by the window's coordinates system.A icon has its own coordinate system too.These two different coordinate systems must communicate properly and on time. Some important problem are discussed in the paper. They are about moving icon efficiently,exactly.Some people have noticed that moving icons on desktop under window XP is not efficient and exact. In the GUI environment,icons and pictures are frequently used and they represent many things,such as files,folders etc.In fact theses icons are associated with system resources.Controlling these resources efficiently is controlling the system's rescources efficiently in reality.This phenomenon mentioned previously is caused by some defaults in the development of Windows XP itself. Unenabling to smally move an icon on Windows XP screen efficiently and the icons bounce after releasing mouse are analyzed and studied in the paper. In VB 6.0 development environment the methods and skills of solving this problem are given, so icons dragging can be controlled efficiently and accurately. This idea is very useful and valuable generally for solving similar problems in Windows XP. © (2013) Trans Tech Publications, Switzerland.