Frequency measurement

Xem 1-20 trên 90 kết quả Frequency measurement
  • Resonant frequency measurements provide useful insight into the repeatability of MicroElectroMechanical Systems (MEMS) manufacturing processes. Several techniques are available for making this measurement.

    pdf7p nguyen4 18-11-2009 53 11   Download

  • Tham khảo sách 'precision spectroscopy diode lasers and optical frequency measur', kỹ thuật - công nghệ, tự động hoá phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

    pdf293p nt18104 21-05-2013 20 4   Download

  • Siemens Milltronics Process Instruments has a long and successful history specializing in the manufacture of equipment for industrial process measurement. Based in Peterborough, Canada, Siemens Milltronics (PI2) is now a key member of the Sensors and Commu nication division within the Siemens Industry division, supplying instrumentation across the globe. Founded in 1954 by Stuart Daniel, a former employee of Canadian General Electric, the company began as Milltronics and engineered electronic ball mill grinding controls for the cement and mining industry.

    pdf166p namde04 03-05-2013 48 9   Download

  • The increasing complexity of summarization systems makes it difficult to analyze exactly which modules make a difference in performance. We carried out a principled comparison between the two most commonly used schemes for assigning importance to words in the context of query focused multi-document summarization: raw frequency (word probability) and log-likelihood ratio.

    pdf4p hongvang_1 16-04-2013 17 2   Download

  • It is remarkable that the pathological state of human soft tissues highly correlates with static and low-frequency mechanical properties, particularly shear elasticity (e.g., Sumi, 2005d). Accordingly, we have been developing ultrasonic (US)-strain measurement-based one- dimensional (1D) (Sumi et al., 1993, 1995a, 2010f; Sumi, 1999b, 2005d, 2008a, 2010d; Sumi & Matsuzawa, 2007b), 2D (Sumi et al., 1993, 1995a; Sumi, 1999c, 2005d, 2006b, 2007g, 2008a, 2008c, 2010d) and 3D (Sumi, 1999c, 2005d, 2006b, 2007g, 2010d.

    pdf27p thaodien102 06-11-2015 17 2   Download

  • The success of a mechanical translation should be measured in terms of the level of depth required by the situation. To determine whether a careful translation is desirable a rough scanning will suffice. The use of cover-words, high frequency words that may be substituted for low frequency words, in the output language is an essential part of this process.

    pdf0p nghetay_1 06-04-2013 22 1   Download

  • We present a novel approach for discovering word categories, sets of words sharing a significant aspect of their meaning. We utilize meta-patterns of highfrequency words and content words in order to discover pattern candidates. Symmetric patterns are then identified using graph-based measures, and word categories are created based on graph clique sets. Our method is the first pattern-based method that requires no corpus annotation or manually provided seed patterns or words.

    pdf8p hongvang_1 16-04-2013 21 1   Download

  • In the past years, a number of lexical association measures have been studied to help extract new scientific terminology or general-language collocations. The implicit assumption of this research was that newly designed term measures involving more sophisticated statistical criteria would outperform simple counts of cooccurrence frequencies. We here explicitly test this assumption.

    pdf8p hongvang_1 16-04-2013 29 1   Download

  • We present the results of an experiment on extending the automatic method of Machine Translation evaluation BLUE with statistical weights for lexical items, such as tf.idf scores. We show that this extension gives additional information about evaluated texts; in particular it allows us to measure translation Adequacy, which, for statistical MT systems, is often overestimated by the baseline BLEU method. The proposed model uses a single human reference translation, which increases the usability of the proposed method for practical purposes. ...

    pdf8p bunbo_1 17-04-2013 18 1   Download

  • In this report, we use a sum-frequency generation vibrational spectroscopy to measure SFG spectra from 1-Butanol monolayers on pure water and halide saline solution interfaces. These spectra indicate that halide anions have different effects on the structure of 1-Butanol monolayer/water interfaces. The obtained SFG spectra suggest that the I¯ anions mostly disturb the interfacial structure due to their largest surface propensity among those investigated.

    pdf6p truongtien_09 08-04-2018 1 0   Download

  • The test object in this paper is a 200 kVA 10.4/0.46 kV Yy6 distribution transformer whose measurement. To facilitate the investigation with the distributed circuit development, after all measurements were carried out, the transformer was disassembed to measure its geometrical parameters.

    pdf8p sansan2 26-05-2018 3 0   Download

  • Mechanical failures in power transformers cause changes on measured frequency responses starting from a medium frequency range, from several hundreds of Hz or tens of kHz depending on transformer/winding type and power. For a reliable diagnosis, the understanding of transformer/winding structure on measured frequency responses is of importance; thus, the international standards suggested the simulation approach with physical distributed transformer circuits should be exploited.

    pdf9p ironman1234 06-06-2018 0 0   Download

  • The basic idea behind any sonar system is as follows: an acoustic signal (or ping) is emitted by the sonar into an area to be observed; the sonar then listens for echoes of the ping that have been produced when bouncing back from the objects that might be present in the area. Typically, sonar images are produced by plotting the intensity measured back by the sonar versus time, and since the speed of sound underwater is known (or can be measured), the time axis effectively corresponds to range from the sonar. In this way, just as light illuminates a scene...

    pdf252p lulanphuong 23-03-2012 60 12   Download

  • Physical measurement dimensions, such as temperature or pressure and tensile forces, can affect glass fibres and locally change the characteristics of light transmission in the fibre. As a result of the damping of the light in the quartz glass fibres through scattering, the location of an external physical effect can be determined so that the optical fibre can be employed as a linear sensor. Light scattering, also known as Raman scattering, occurs in the optical fibre.

    ppt53p gacon89 13-06-2010 73 11   Download

  • After four centuries a quote from Galileo Galilei is still the most effective way to introduce a Metrology book: “Measure what is measurable, and make measurable what is not so”. Every human activity needs an objective measurement and every global process should be supported by a common standard. There are several handbooks, tutorials and journals that focus on the basic concepts of metrology, the uncertainty theory and the international reference standards. Moreover, the engineering literature is awash with measurement methods for each specific field.

    pdf470p wqwqwqwqwq 09-07-2012 50 9   Download

  • It is a great honor and pleasure for me to introduce this book “Applications of Digital Signal Processing” being published by InTech. The field of digital signal processing is at the heart of communications, biomedicine, defense applications, and so on. The field has experienced an explosive growth from its origins, with huge advances both in fundamental research and applications.

    pdf410p greengrass304 15-09-2012 46 7   Download

  • Microwave Materials Characterization is an edited book discussing recent researches on basic and innovative measurement techniques for the characterization of materials at microwave frequencies, in terms of quantitative determination of their electromagnetic parameters, namely the complex permittivity and permeability. It is divided into two parts: Part 1, including original contributions on advanced techniques for the characterization of dielectric materials, and Part 2, devoted to the microwave characterization of biological tissues....

    pdf170p camchuong_1 04-12-2012 52 7   Download

  • Wim A. Van der Stede is the CIMA Professor of Accounting and Financial Management at the London School of Economics. He is actively involved with both the American (AAA) and European (EAA) Accounting Associations, including as President of the AAA Management Section; the AAA Finance Committee; the EAA Doctoral Colloquium; and the EAA Publications Committee. Wim has published extensively in both practitioner and academic journals and has won several awards, including the AAA Notable Contribution to Management Accounting Literature and IFAC’s Article of Merit.

    pdf6p taisaovanchuavo 26-01-2013 24 6   Download

  • During the years surrounding the new millennium, the field of vibrational optical activity (VOA), comprised principally of vibrational circular dichroism (VCD) and vibrational Raman optical activity (ROA), underwent a transition from a specialized area of research that had been practiced by a handful of pioneers into an important newfield of spectroscopy practiced by an increasing number of scientists worldwide. This transition was made possible by the development of commercial instrumentation and software for the routine measurement and quantum chemical calculation ofVOA.

    pdf388p hotmoingay 03-01-2013 22 5   Download

  • (BQ) Part 2 book "Electronic devices and circuit theory" has contents: BJT and JFET frequency response, linear digital ICs, sinusoidal alternating waveforms, operational amplifiers, Op-Amp applications, power amplifiers, power supplies, oscilloscope and other measuring instruments,...and other contents.

    pdf440p bautroibinhyen21 14-03-2017 15 5   Download

CHỦ ĐỀ BẠN MUỐN TÌM

Đồng bộ tài khoản