Xem 1-20 trên 262 kết quả Observing system
  • Immediately after the first drafts of the human genome sequence were reported almost a decade ago, the importance of genomics and functional genomics studies became well recognized across the broad disciplines of biological sciences research.

    pdf346p orchid_1 17-09-2012 51 21   Download

  • Although inelastic scattering of light from molecules, a phenomenon now known as Raman scattering, was observed by C. V. Raman in 1928, the nonlinear phenomenon of stimulated Raman scattering was not demonstrated until 1962. Soon after low-loss silica fibers became available around 1970, Roger Stolen and coworkers used stimulated Raman scattering in such fibers not only for amplification of optical signals but also for constructing fiber-based Raman lasers.

    pdf389p nguyenthai_thinh 16-03-2013 44 14   Download

  • The title of the book System, Structure and Control encompasses broad field of theory and applications of many different control approaches applied on different classes of dynamic systems. Output and state feedback control include among others robust control, optimal control or intelligent control methods such as fuzzy or neural network approach, dynamic systems are e.g.

    pdf256p kimngan_1 06-11-2012 28 7   Download

  • Today, space technology is used as an excellent instrument for Earth observation applications. Data is collected using satellites and other available platforms for remote sensing. Remote sensing data collection detects a wide range of electromagnetic energy which is emitting, transmitting, or reflecting from the Earth's surface. Appropriate detection systems are needed to implement further data processing. Space technology has been found to be a successful application for studying climate change, as current and past data can be dynamically compared.

    pdf266p cucdai_1 16-10-2012 28 6   Download

  • The new edition of this comprehensive digital controls book integrates MATLAB throughout the book. The book has also increased inflexibility and reader friendliness through the streamlining of coverage in Chapters 6 & 7 (controllability, pole placement and observability, and optimal control). The previous edition ISBN is: 0-13-216102-8.

    pdf760p muathu_102 29-01-2013 34 6   Download

  • Cyber-physical systems (CPSs) are an emerging research topic born from the ever increasing complexity of engineered systems. Future systems will have to interact with each other and with the physical world in a very tight and well coordinated fashion, and designing such systems is the research challenge behind CPSs. CPSs have been defined as “computational thinking and integration of com putation around the physical dynamic systems where sensing, decision, actuation, computation, networking, and physical processes are mixed”.

    pdf189p namde04 03-05-2013 24 6   Download

  • Neural Network-Based Adaptive Controller Design of Robotic Manipulators with an Observer Fuchun Sun, Member, IEEE, Zengqi Sun, Senior Member, IEEE, and Peng-Yung Woo, Member, IEEE Abstract—A neural network (NN)-based adaptive controller with an observer is proposed in this paper for the trajectory tracking of robotic manipulators with unknown dynamics nonlinearities. It is assumed that the robotic manipulator has only joint angle position measurements.

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  • Tham khảo sách 'cooperative robotics for multi target observation', kỹ thuật - công nghệ, tự động hoá phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf0p louisxlll 20-12-2012 29 4   Download

  • The magnetosphere is an open system that interacts with the solar wind. In this system, solar wind energy continuously permeates different regions of the magnetosphere through electromagnetic processes, which we can well describe in terms of current systems. In fact, our ability to use various methods to study magnetospheric current systems has recently prompted significant progress in our understanding of the phenomenon.

    pdf37p haiduong_1 27-02-2013 22 4   Download

  • This paper presents a supervised pronoun anaphora resolution system based on factorial hidden Markov models (FHMMs). The basic idea is that the hidden states of FHMMs are an explicit short-term memory with an antecedent buffer containing recently described referents. Thus an observed pronoun can find its antecedent from the hidden buffer, or in terms of a generative model, the entries in the hidden buffer generate the corresponding pronouns.

    pdf10p hongdo_1 12-04-2013 17 4   Download

  • Hydrogenophilus thermoluteoluscytochromec¢ (PHCP) has typical spectral properties previously observed for other cytochromesc¢, which comprise Ambler’s class II cytochromesc. The PHCP protein sequence (135 amino acids) deduced from the cloned gene is the most homologous (55% iden-tity) to that of cytochrome c¢ from Allochromatium vinosum(AVCP).

    pdf8p cosis54 05-01-2013 11 2   Download

  • Statistical language modeling (SLM) has been used in many different domains for decades and has also been applied to information retrieval (IR) recently. Documents retrieved using this approach are ranked according their probability of generating the given query. In this paper, we present a novel approach that employs the generalized Expectation Maximization (EM) algorithm to improve language models by representing their parameters as observation probabilities of Hidden Markov Models (HMM).

    pdf9p hongphan_1 15-04-2013 12 2   Download

  • Over several years, we have developed an approach to spoken dialogue systems that includes rule-based and trainable dialogue managers, spoken language understanding and generation modules, and a comprehensive dialogue system architecture. We present a Reinforcement Learning-based dialogue system that goes beyond standard rule-based models and computes on-line decisions of the best dialogue moves. The key concept of this work is that we bridge the gap between manually written dialog models (e.g.

    pdf4p hongphan_1 15-04-2013 25 2   Download

  • Deriving the polarity and strength of opinions is an important research topic, attracting significant attention over the last few years. In this work, to measure the strength and polarity of an opinion, we consider the economic context in which the opinion is evaluated, instead of using human annotators or linguistic resources. We rely on the fact that text in on-line systems influences the behavior of humans and this effect can be observed using some easy-to-measure economic variables, such as revenues or product prices. ...

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  • This paper presents the first demonstration of a statistical spoken dialogue system that uses automatic belief compression to reason over complex user goal sets. Reasoning over the power set of possible user goals allows complex sets of user goals to be represented, which leads to more natural dialogues. The use of the power set results in a massive expansion in the number of belief states maintained by the Partially Observable Markov Decision Process (POMDP) spoken dialogue manager.

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  • Previous studies evaluate simulated dialog corpora using evaluation measures which can be automatically extracted from the dialog systems’ logs. However, the validity of these automatic measures has not been fully proven. In this study, we first recruit human judges to assess the quality of three simulated dialog corpora and then use human judgments as the gold standard to validate the conclusions drawn from the automatic measures. We observe that it is hard for the human judges to reach good agreement when asked to rate the quality of the dialogs from given perspectives.

    pdf8p hongphan_1 15-04-2013 11 1   Download

  • User-adviser dialogues were collected in a typed Wizardof-Oz study (=man-behind-the-curtain study*). Thirty-two users had to solve simple statistics problems using an unfamiliar statistical package. Users received help on how to use the statistical package by typing utterances to what they believed was a computerized adviser. The observed limited set of users' grammatical and ungrammatical forms demonstrates the sufficiency of a very restricted grammar of English for a natural language interface to an advisory sys* tem.

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  • An English-Japanese bi-directional machine translation system was connected to a keyboard conversation function on a workstation, and tested via a satellite link with users in Japan and Switzerland. The set-up is described, and some informal observations on the nature of the bilingual dialogues reported. particular we were struck by the amount of metadialogue, i.e. dialogue discussing the previous interchanges: since contributions to the conversation were being translated, this metadialogue posed certain problems which we think are of general interest. ...

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  • Tham khảo sách 'coast guard observations on the genesis and progress of the service s', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf32p nt18102 23-05-2013 15 1   Download

  • The essential characteristics of system testing are that it is comprehensive, based on a specification of observable behavior, and independent of design and implementation decisions. Independence in system testing avoids repeating software design errors in test design. Acceptance testing abandons specifications in favor of users, and measures how the final system meets users' expectations. Regression testing checks for faults introduced during evolution.

    pdf8p allbymyself_09 23-02-2016 8 1   Download

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