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Xem 1-20 trên 427 kết quả Heterogeneity
  • [ Team LiB ] Recipe 3.6 Combining Data in Tables from Heterogeneous Data Sources Problem You want to create a report that is based on data from tables in more than one data source. Solution Use ad-hoc connector names in SQL statements.

    pdf2p luvpro 04-08-2010 61 5   Download

  • Foreword for Cary Conference X, “Ecosystem Function in Heterogeneous Landscapes.” Among the most difficult problems in the life sciences is the challenge to understand the details of how ecosystems/watersheds/landscapes function. Yet, the welfare of all life, not just the human species, depends upon the successful functioning of diverse and complicated ecosystems, each with various dimensions and compositions.

    pdf491p phoebe75 01-02-2013 30 5   Download

  • The study assessed the impacts of international trade and protection on wage premiums across Thai manufacturing industries by recognising that workers are heterogeneous in their skills.The author derived a theoretical model from Ohnsorge and Trefler (2007) that is the equilibrium model with heterogeneous skill bundles and estimated the model using micro data from Thailand.

    pdf10p nganga_06 05-10-2015 25 3   Download

  • In this paper, we present a new learning scenario, heterogeneous transfer learning, which improves learning performance when the data can be in different feature spaces and where no correspondence between data instances in these spaces is provided. In the past, we have classified Chinese text documents using English training data under the heterogeneous transfer learning framework. In this paper, we present image clustering as an example to illustrate how unsupervised learning can be improved by transferring knowledge from auxiliary heterogeneous data obtained from the social Web. ...

    pdf9p hongphan_1 14-04-2013 54 2   Download

  • We address the issue of using heterogeneous treebanks for parsing by breaking it down into two sub-problems, converting grammar formalisms of the treebanks to the same one, and parsing on these homogeneous treebanks. First we propose to employ an iteratively trained target grammar parser to perform grammar formalism conversion, eliminating predefined heuristic rules as required in previous methods.

    pdf9p hongphan_1 14-04-2013 26 2   Download

  • A thermodynamic model for heterogeneous mixtures involving multi-molecular sorption is proposed. Some complex relationships between sorption potential, diffusion, sorption kinetics polymer network change kinetics, chemical affinity energy of internal changes and physico- chemical properties of polymer network are obtained. This model has interpreted some experimental results of fluid sorption in polymer network. Proposed model may be also used for study of other problems in heterogeneous mixture of fluid and polymers.

    pdf5p uocvong04 24-09-2015 19 2   Download

  • We propose a novel algorithm for inducing semantic taxonomies. Previous algorithms for taxonomy induction have typically focused on independent classifiers for discovering new single relationships based on hand-constructed or automatically discovered textual patterns. By contrast, our algorithm flexibly incorporates evidence from multiple classifiers over heterogenous relationships to optimize the entire structure of the taxonomy, using knowledge of a word’s coordinate terms to help in determining its hypernyms, and vice versa. ...

    pdf8p hongvang_1 16-04-2013 30 1   Download

  • Preparation, characterization and application of heterogeneous solid base catalyst for biodiesel production from soybean oil has many contents: Preparation of catalyst, haracterization of the catalys, ransesterification of soybean oil and chemicalanalyses, creening of catalyst, atalyst characterizations, fluence of the transesterification reactionconditions,...

    pdf9p cscpubka 05-05-2014 82 1   Download

  • In this paper the structural and dynamical characteristics in alumina- silicate Al2O3– 2SiO2 (AS2) liquid are investigated by molecular simulation method. Structural properties are clarified through the pair radial distribution function, distribution of TOn (T= Si, Al) coordination units and distribution of partial bond angle in TOn. Furthermore the change in diffusion mechanism between low and high pressure is revealed by transition of the structural units TOx → TOx±1. At the lowpressure, liquid AS2 exhibits the dynamics heterogeneity (DH).

    pdf8p truongtien_09 08-04-2018 8 0   Download

  • With the aim to enhance photocatalytic properties and anti-Ecoli bacteria abilities of TiO2 thin films; hierarchical heterogeneous nanostructured ZnO/TiO2 (HNs) films were deposited by DC magnetron sputtering. The obtained results showed that both the photocatalytic performance and anti - Ecoli bacteria ability of HNs films exhibited enhancement in comparison with standard TiO2 films. This enhancement was explained due to the reduction of the electron - hole recombination and the red shift of absorption edge of the HNs films.

    pdf7p thuyliebe 12-10-2018 8 0   Download

  • In this study, Fe2O3/SiO2 composite was prepared by incipient impregnation method for degradation of tartrazine dye from aqueous solution by heterogeneous Fenton-like process. As-synthesized sample was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and N2 adsorption– desorption isotherm. The results indicated that iron impregnation (7 wt.%) did not significantly change specific area but it leads to a clear change in the porous structure of silica.

    pdf8p bautroibinhyen211 26-11-2018 10 0   Download

  • In this paper, a heterogeneous network is intended to attain enhanced energy-efficient multipath QoS provisioning. Primarily, the multipath routes are assumed to be discovered and they then find the gateway node along with all the nodes in the network by using the gateway selection procedure.

    pdf12p byphasse043256 21-03-2019 3 0   Download

  • This paper analyzes the SIP-based mobility management behavior within a heterogeneous network interconnecting IEEE 802.11-based wireless local area network (WLAN) and IEEE 802.16-based wireless metropolitan area network (WMAN). Our work focuses on signaling processes, during handoff between 802.11 and 802.16 networks. Particularly, the MAC layer technologies of 802.11 and 802.16 are examined in great detail.

    pdf11p byphasse043256 23-03-2019 8 0   Download

  • In this paper we start with a brief summary of the existing approaches commonly used in heterogeneous database integration followed by a new and unique approach of integration of heterogeneous databases based on XML. Compared to conventional models, this model is simple, efficient and cost effective and hence can be widely used in businesses spread across multiple locations.

    pdf5p hongnhan878 12-04-2019 5 0   Download

  • This paper presents the author's research results for heterogeneous channel error correction on phase array antennas in Global Navigation Satellite System in order to improve noise quality for terminals. The error correction method proposed by the author is a two-stage algorithm with automatic correction and error correction algorithm based on self-compensation.

    pdf14p visumika2711 17-07-2019 0 0   Download

  • This book is an introduction to the quantitative treatment of chemical reaction engineering. The level of the presentation is what we consider appropriate for a one-semester course. The text provides a balanced approach to the understanding of: (1) both homogeneous and heterogeneous reacting systems and (2) both chemical reaction engineering and chemical reactor engineering. We have emulated the teachings of Prof. Michel Boudart in numerous sections of this text.

    pdf382p tuanloc_muido 07-12-2012 56 16   Download

  • The domain of catalytic hydrogenation continues to grow fast, reflecting the wide range of chemical applications that can be enhanced by the easy use of molecular hydrogen. The advances in characterization techniques and their application have improved our understanding of the catalytic processes and mechanisms occurring in both homogeneous and heterogeneous catalysis.

    pdf338p cucdai_1 19-10-2012 48 7   Download

  • This chapter describes the challenges of operating in a heterogeneous environment. Oracle recognizes these challenges and offers both synchronous and asynchronous solutions that enable companies to easily operate in such an environment. The two synchronous solutions, Oracle Transparent Gateways and Generic Connectivity, are discussed this book.

    pdf178p daokim 03-08-2009 70 5   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Enabling direct connectivity between heterogeneous objects in the internet of things through a network-service-oriented architecture

    pdf14p sting04 07-02-2012 30 5   Download

  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Object Association and Identification in Heterogeneous Sensors Environment

    pdf18p sting05 10-02-2012 25 5   Download



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