载入中....
登录 | 免费注册 | 设为主页 | 收藏本站 | 最新文献 | 高级  
论文,论文发表,EI论文检索
省级、国家级、EI计算机论文发表
[ QQ:790062161 Tel:15918888768 ]
论文发表,论文投稿,
诚信为本,海一样的胸怀!


   把知来设为主页
  知来一下,找到符合条件的论文11,635,390篇,用时 0

1   Power cable inspections using Matlab graphical user interface aided by thermal imaging Power cable inspections using Matlab graphical user interface aided by thermal imaging
Selim, F.; Bedir, I.; Desuoki, H.E.    2011
This paper proposed an efficient method to predict and solve an abnormal conditions in all electrical cables, using Matlab GUI (Graphic User Interface) with thermal imaging (infrared (IR) camera). The use of traditional techniques (without IR camera) not easily to predict faults and give a complete diagonous about them. Using any type of thermal camera, which can detect the thermal state of abnormal conditions of cables by technical operator (thermographer) and send this thermal images to a nove...
查看全文   

2   The effect of vibrational and translational energies of ionic reactant on the reaction NO++iso‐C4H10→HNO+C4H+9 The effect of vibrational and translational energies of ionic reactant on the reaction NO++iso‐C4H10→HNO+C4H+9
K. Honma;K. Tanaka;I. Koyano;I. Tanaka    0
The effect of vibrational energy of the ionic reactant on the rate of the reaction NO++iso‐C4H10→HNO+C4H+9 has been examined by directly determining the relative reaction cross sections for the individual vibrational states from v=0 to 4. The reactant ions were produced by photoionization at suitable wavelengths and the relative abundances of the ions in various vibrational states were determined at each wavelength by photoelectron spectrometry. The translational energy dependence of the individ
查看全文   

3   Development of thermal neutron flux monitor using small scintillator array coupled with quartz fibers for Boron Neutron Capture Therapy Development of thermal neutron flux monitor using small scintillator array coupled with quartz fibers for Boron Neutron Capture Therapy
Tanaka, Hiroki; Sakurai, Yoshinori; Suzuki, Minoru; Masunaga, Shinichiro; Kinashi, Yuko; Kondo, Nats    2011
At Kyoto University Research Reactor Institute, over three hundred clinical trials of Boron Neutron Capture Therapy (BNCT) have been performed using research reactor. On the other hand, we have developed cyclotron based epithermal neutron source. To improve the quality of treatment, it is necessary to perform. the detection of two dimensional thermal neutron distribution before treatment as quality control. Generally, the method of activation using gold foil/wire and germanium semiconductor dete...
查看全文   

4   Recursive storage cache memory for matrix multiplication Recursive storage cache memory for matrix multiplication
Korde, P.S.; Khanale, P.B.    2011
The memory of modern computer is layered in a hierarchy, top to bottom primary cache, secondary cache, main memory, virtual memory and distributed memory with more levels to come in the future. Our goal is to automatically achieve that of fine-tuned algorithms on a multi-level memory hierarchy. This automatically is because cache oblivious algorithms no knowledge about any capacity and block size of each level of the hierarchy. In this paper an efficient techniques is proposed to manage cache me...
查看全文   

5   Energies and relative cross sections of singlet–triplet transitions in methyl‐substituted 1,3‐butadienes by ion‐impact spectroscopy Energies and relative cross sections of singlet–triplet transitions in methyl‐substituted 1,3‐butadienes by ion‐impact spectroscopy
John H. Moore;Yukinori Sato;Stuart W. Staley    0
The energies of the 1?3Bu←??1Ag and 1?3Ag←??1Ag transitions of a number of methyl‐substituted 1,3‐butadienes have been determined by ion (He+ and H2+) ‐impact energy‐loss spectroscopy. The observed values were relatively invariant at 3.2 and 4.9 eV, respectively, except in the case of 2,4‐dimethyl‐1,3‐pentadiene where triplet states at 3.5 and 4.4 eV indicate a nonplanar conformation or conformations. The relative cross section for the 1?3Bu←??1Ag transition in the He+‐impact spectrum of trans‐1
查看全文   

6   A medium-grain reconfigurable processor organization A medium-grain reconfigurable processor organization
Van Dyken, J.; Delgado-Frias, J.G.    2011
In this paper a novel and extremely configurable execution core is presented for a standard five-stage pipelined processor. This processor implementation targets a medium grain highly reconfigurable hardware architecture that has been developed for DSPs applications. Using the Spec Espresso and Li benchmarks, analysis of different data forwarding mechanisms and machine per system clock factors are offered. Results show that with an increase in 16.7% or 28.7% hardware size execution time can be r...
查看全文   

7   Z-restored spin-echo 13C 1D spectrum of straight baseline free of hump, dip and roll Z-restored spin-echo 13C 1D spectrum of straight baseline free of hump, dip and roll
Shun S. Lo, Tihana Mirkovic, Chi-Hung Chuang, Clemens Burda and Gregory D. Scholes    2008
A pulse sequence of z-restored spin echo, − π− β− τ− π− τ−, employing a π pulse in the middle of the delay (2τ) to form. a spin echo and the two π pulses together to restore the residual longitudinal magnetization back to + z direction, is described. 13C spectra of organic compounds provide a wealth of structural information; however, 13C 1D spectra acquired using reverse geometry probes can have significant baseline humps or rolls...
查看全文   

8   Music genre recognition using spectrograms Music genre recognition using spectrograms
Costa, Y.M.G.; Oliveira, L.S.; Koericb, A.L.; Gouyon, F.    2011
In this paper we present an alternative approach for music genre classification which converts the audio signal into spectrograms and then extracts features from this visual representation. The idea is that treating the time-frequency representation as a texture image we can extract features to build reliable music genre classification systems. The proposed approach also takes into account a zoning mechanism to perform. local feature extraction, which has been proved to be quite efficient. On a ...
查看全文   

9   Effect of the voltage waveforms and power on hydrogen and hydrogen peroxide formation in water-spray gliding arc reactor Effect of the voltage waveforms and power on hydrogen and hydrogen peroxide formation in water-spray gliding arc reactor
Burlica, R.; Finney, W.C.; Locke, B.R.    2011
The present work deals with the formation of molecular hydrogen (H2) and hydrogen peroxide (H2O2) from liquid water sprayed into a non-thermal plasma formed by a gliding arc discharge. Previous work has demonstrated enhanced efficiency, as measured by specific energy yield, for the production of these species using a low power-pulsed plasma-gliding arc formed in a reactor with two divergent electrodes, water sprayed through a two way nozzle, and power generated by an ignition coil driven by a pu...
查看全文   

10   Prebisch-Singer Redux Prebisch-Singer Redux
John T. Cuddington, Rodney Ludema, Shamila A Jayasuriya    2002
In light of ongoing concern about commodity specialization in Latin America, this paper revisits the argument of Prebisch (1950) that, over the long term, declining terms of trade would frustrate the development goals of the region. This paper has two main objectives. The first is to clarify the issues raised by Prebisch and Singer (1950), as they relate the commodity specialization of developing countries (and Latin America in particular). The second is to reconsider empirically the issue of tr
查看全文   

11   Constructing hierarchical topic knowledge window for Chinese news browsing and retrieval Constructing hierarchical topic knowledge window for Chinese news browsing and retrieval
Huang, Chuen-Min1 ; Chang, Sheng-Fu1    2006
This paper proposes an event-based hierarchical knowledge structure for Chinese news display. We apply Hierarchical Topic Detection and Tracking technique to group news reports into clusters. Considering the extensibility of events, the knowledge structure is designed with robustness to merge similar reports and reorganize the structure automatically. This brings the merit of tracking associated follow-up event. To verify the applicable features, we design an assessing mechanism and call for par...
查看全文   

12   Quantum‐mechanical theory for electronic‐vibrational‐rotational energy transfer in atom–diatom collisions: Analysis of the Hamiltonian Quantum‐mechanical theory for electronic‐vibrational‐rotational energy transfer in atom–diatom collisions: Analysis of the Hamiltonian
J. C. Bellum@f@f;P. McGuire    0
We investigate forms of the molecular system Hamiltonian valid for rigorous quantum‐mechanical treatments of inelastic atom–diatom collisions characterized by exchange of energy between electronic, vibrational, and rotational degrees of freedom. We analyze this Hamiltonian in terms of various choices of independent coordinates which unambiguously specify the electronic and nuclear positions in the context of space‐fixed and body‐fixed reference frames. In particular we derive forms of the Hamilt
查看全文   

13   Reverse engineering as an education tool in computer science Reverse engineering as an education tool in computer science
Klimek, I.; Keltika, M.; Jakab, F.    2011
The concept of Reverse Engineering is used in many fields of IT every day, to name just a few: legacy compatibility, binary code patching, malware analysis, network protocols analysis, debugging or even rapid prototyping. Despite its broad use, reverse engineering is not actively taught as a part of computer science courses. This paper tries to provide a survey of some of the real life usage scenarios of reverse engineering, analyzes what skills and ways of thinking are developed by reverse engi...
查看全文   

14   Reactivity studies on 4-aminopyrones: Access to benzimidazole and benzimidazolone derivatives Reactivity studies on 4-aminopyrones: Access to benzimidazole and benzimidazolone derivatives
Bernd Schweder, Dirk Walther, Thomas Douml;hler, Olaf Klobes and Helmar Gouml;rls    2009
Reaction of pyrone 1a or tetronic acid 1b with o-phenylenediamine derivatives gave enaminone compounds 2. When reacting with different electrophiles, these intermediates allowed versatile access to different heterocyclic structures: when DMA derivatives or triphosgene was used, cyclization occurred through nitrogen, leading to benzimidazoles 3 and benzimidazolones 4, respectively, while reaction with benzaldehyde yielded benzodiazepines 5.
查看全文   

15   A novel approach for extracting text from color documents A novel approach for extracting text from color documents
Audithan, S.1 ; Chandrasekaran, R.M.1    2009
In complex color documents, text, drawings and graphics occur with millions of different colors. To extract the text part from the non text part, an efficient and computationally fast algorithm is proposed. Many cases, text regions are overlaid onto drawings or graphics. A novel method is proposed for the automatic detection and extraction of text in color documents. There is a significant need to recognize the text in images on web pages, both for effective indexing and for presentation by non-...
查看全文   

16   OLSIM: Future traffic information OLSIM: Future traffic information
Chrobok, Roland1 ; Hafstein, Sigurour1 ; Pottmeier, Andreas1 ; Schreckenberg, Michael1    2004
Detailed and reliable information about the current traffic state is hardly obtainable by the road user. Therefore, we propose a web based visualization of the current and future traffic load of the autobahn network of North Rhine-Westphalia, Germany. This novel traffic information system, called OLSIM, is based on an efficient and highly realistic traffic flow model, which is fed by traffic data of 4,000 detecting devices across the road network every minute, and a graphical user interface whic...
查看全文   

17   Photodissociation of the SO2⋅SO+2 dimer in the visible region of the spectrum: Product relative kinetic energy distributions and product angular distributions Photodissociation of the SO2⋅SO+2 dimer in the visible region of the spectrum: Product relative kinetic energy distributions and product angular distributions
Martin F. Jarrold;Andreas J. Illies;Michael T. Bowers    0
The results of an investigation of the photodissociation of the SO2?SO+2 cluster ion in the visible wavelength range (458–590 nm) are presented. The studies were performed using a crossed fast ion beam/laser beam experiment. Product relative kinetic energy distributions and product center of mass angular distributions are reported. Methods used to extract the angular distributions from the experimental measurements are described. The only ionic product observed from the photodissociation of SO2?
查看全文   

18   Edge foci interest points Edge foci interest points
Zitnick, C.L.; Ramnath, K.    2011
In this paper, we describe an interest point detector using edge foci. Unlike traditional detectors that compute interest points directly from image intensities, we use normalized intensity edges and their orientations. We hypothesize that detectors based on the presence of oriented edges are more robust to non-linear lighting variations and background clutter than intensity based techniques. Specifically, we detect edge foci, which are points in the image that are roughly equidistant from edges...
查看全文   

19   Long-term spatio-temporal dynamics and historical continuity of European aspen (Populus tremula L.) stands in the Koli National Park, eastern Finland Long-term spatio-temporal dynamics and historical continuity of European aspen (Populus tremula L.) stands in the Koli National Park, eastern Finland
Mikko Vehmas1,*, Jari Kouki1 and Kalle Eerikäinen2    2009
Although the European aspen (Populus tremula L.) is regarded as a keystone species for the biodiversity of northern Europe, its mechanisms of regeneration and persistence under old-growth conditions without large-scale disturbances have remained obscure. The aim of this paper is to describe the long-term dynamics and regeneration of European aspen in the old-growth forests of the Koli National Park, eastern Finland, in order to gain a b...
查看全文   

20   Syria: from ‘authoritarian upgrading’ to revolution? Syria: from ‘authoritarian upgrading’ to revolution?
Roy Kreitner    2012
I am indebted for some of the ideas in this paper to Samir al-Taqi, Heidi Huuhtanen and Tina Zintl.
查看全文   

21   J-coupling and chemical-shift evolution during I-spin irradiation of ImSn systems: Product operator solutions and applications J-coupling and chemical-shift evolution during I-spin irradiation of ImSn systems: Product operator solutions and applications
   2002
We previously obtained exact solutions for the time dependence of the density operator in weakly coupled spin-½ ImSn systems during arbitrary RF irradiation of the I spins. The solutions for the density operator were written as explicit linear combinations of its product operator components (i.e., the operator basis set consisting of direct products of the I- and S-spin operators). Other solutions for the product-operator evolution of the density matrix have considered either evolution in...
查看全文   

22   – Acquisition – Acquisition
Mit Opencourseware, Stephanie Chiesi, Babak Cohanim, Edward Fong, Kalina Galabova, Ian Garrick-bethe    2003
a science-driven program that seeks to understand whether Mars ever was or could be a habitable world. To answer this question, scientists are trying to understand how geologic, climatic, and other processes are interacting to shape the Martian environment over time. Engineers are working on designing and validating advanced technologies that would enable us to explore Mars in ways we never have before, with the goals of higher-resolution images, precision landings, longerranging surface mobilit...
查看全文   

23   Determination of the orientation of fluorescent labels relative to myosin S1 in solution from time-resolved fluorescence anisotropy experiments Determination of the orientation of fluorescent labels relative to myosin S1 in solution from time-resolved fluorescence anisotropy experiments
Uulke A. van der Heide    0
The time-resolved fluorescence anisotropy of myosin S1 covalently labeled with Eosin-5- maleimide and 1,5-I-AEDANS was measured in solution. Each probe was specifically attached at one SH-group on the S1. The two most reactive SH sites on the heavy chain of the myosin S1 were used. The fluorescence anisotropy was measured at different excitation wavelengths. In this way, several absorption moments were utilized, each having a distinct orientation in the frame. of the dye. The orientations of the...
查看全文   

24   1,1-Organoboration of bis(trimethylstannyl)ethyne with trimethylsilyl- and dimethylsilyl-dialkylboryl-substituted alkenes: organometallic-substituted allenes 1,1-Organoboration of bis(trimethylstannyl)ethyne with trimethylsilyl- and dimethylsilyl-dialkylboryl-substituted alkenes: organometallic-substituted allenes
Sabine Maier and Uli Kazmaier    2003
The reactions of bis(trimethylstannyl)ethyne, Me3Sn–CC–SnMe3 (4), with trimethylsilyl- or dimethylsilyl-dialkylboryl-substituted alkenes 1–3 afford organometallic-substituted allenes 5, 6 and 8, 9 in high yield. In the case of (E)-2-trimethylsilyl-3-diethylboryl-2-pentene (1), a butadiene derivative 7 could be detected as an intermediate prior to rearrangement into the allene. All reactions were monitored by 29Si and 119Sn NMR, and the products were characterized by an extensiv...
查看全文   

25   Determination of traces of uranium by radioisotope energy dispersive x-ray (EDX) analysis Determination of traces of uranium by radioisotope energy dispersive x-ray (EDX) analysis
C. C. Bertrand, T. A. Linn Jr.    1972
查看全文   

26   A Rotating Laser-Doppler Anemometry System for Unsteady Relative Flow Measurements in Model Centrifugal Impellers A Rotating Laser-Doppler Anemometry System for Unsteady Relative Flow Measurements in Model Centrifugal Impellers
M. Abramian    0
The behavior. of the relative flow in centrifugal turbomachines is extremely complex due to the existence of various fluid dynamic phenomena and their interaction. At design and off-design operating conditions, the relative flow is subject to stationary unsteadiness, which includes the flow separation and wakes associated with passage pressure gradients, secondary flows, and boundary layer stability. It is also subject to periodic unsteadiness from the rotating stall and the cyclic flow phenomen...
查看全文   

27   Synthesis of Benzothiazoles through Copper-Catalyzed One-Pot Three-Component Reactions with Use of Sodium Hydrosulfide as a Sulfur Surrogate Synthesis of Benzothiazoles through Copper-Catalyzed One-Pot Three-Component Reactions with Use of Sodium Hydrosulfide as a Sulfur Surrogate
Sabine Maier and Uli Kazmaier    2012
2-Iodoanilines, aldehydes, and NaSH·n H2O afford benzothiazoles in a one-pot reaction in the presence of a copper catalyst. The desired products can be obtainedin moderate to good yields. The copper catalyst plays a key role in C–S bond formation between aryl iodides and NaSH·n H2O. AbstractCopper-catalyzed one-pot three-component reactions of 2-iodoanilines, aldehydes, and NaSH·n H2O afford benzothiazoles in good yields. When CuCl was employed as ...
查看全文   

28   Relative speeds of Kodak computed radiography phosphors and screen-film systems Relative speeds of Kodak computed radiography phosphors and screen-film systems
Walter Huda;Lynn N. Rill;Angela P. Bruner    0
Relative mAs values required to generate a constant plate readout signal for the Kodak Ektascan general purpose (GP-25) and high resolution (HR) photostimulable phosphors were measured as a function of x-ray beam quality and for a range of representative x-ray examinations. The signal intensity was determined from the exposure index (EI) generated during the read out of uniformly exposed phosphor imaging plates. These data were compared to the corresponding relative mAs values required to produc...
查看全文   

29   Video guidance sensor flight experiment results Video guidance sensor flight experiment results
Richard T. Howard    0
An active video sensor system for determining target range and attitude was flown on STS-87. The Video Guidance Sensor (VGS), developed at NASA's Marshall Space Flight Center, demonstrated its capability in space and collected performance data. The VGS was designed to provide near-range sensor data as part of an automatic rendezvous and docking system. The sensor determines the relative positions and attitudes between the active sensor and the passive target. The VGS uses laser diodes to illumin...
查看全文   

30   Mössbauer effect determination of relative recoilless fractions for iron oxides Mössbauer effect determination of relative recoilless fractions for iron oxides
Sei J. Oh;D. C. Cook    0
The relative recoilless fraction (F-value) of each of six iron oxides, defined as the ratio of the recoil-free fractions of two different materials, was experimentally determined relative to hematite at 300 K and 77 K by M?ssbauer spectroscopy. Using the relative recoil-free fractions compared to that of hematite, the relative recoilless fractions between all pairs of the seven iron oxides were determined. The F-values can allow conversion of M?ssbauer subspectral areas to the relative atomic, m...
查看全文   


  1  [2]  [3]  [4]  [5]  [6]  [7]  [8]  [9]  [10]  [11]  [12]  [13]  [14]  [15]  [16]  [17]  [18]  [19]  [20]  [21]  [22]  [23]  [24]  [25]  [26]  [27]  [28]  [29]  [30]  [31]  [32]  [33]  [34]  [35]  [36]  [37]  [38]  [39]  [40]  [41]  [42]  [43]  [44]  [45]  [46]  [47]  [48]  [49]  [50]  [51]  [52]  [53]  [54]  [55]  [56]  [57]  [58]  [59]  [60]  [61]  [62]  [63]  [64]  [65]  [66]  [67]  [68]  [69]  [70]  [71]  [72]  [73]  [74]  [75]  [76]  [77]  [78]  [79]  [80]  [81]  [82]  [83]  [84]  [85]  [86]  [87]  [88]  [89]  [90]  [91]  [92]  [93]  [94]  [95]  [96]  [97]  [98]  [99]  [100]  [101]  [102]  [103]  [104]  [105]  [106]  [107]  [108]  [109]  [110]  [111]  [112]  [113]  [114]  [115]  [116]  [117]  [118]  [119]  [120]  [121]  [122]  [123]  [124]  [125]  [126]  [127]  [128]  [129]  [130]  [131]  [132]  [133]  [134]  [135]  [136]  [137]  [138]  [139]  [140]  [141]  [142]  [143]  [144]  [145]  [146]  [147]  [148]  [149]  [150]  [151]  [152]  [153]  [154]  [155]  [156]  [157]  [158]  [159]  [160]  [161]  [162]  [163]  [164]  [165]  [166]  [167]  [168]  [169]  [170]  [171]  [172]  [173]  [174]  [175]  [176]  [177]  [178]  [179]  [180]  [181]  [182]  [183]  [184]  [185]  [186]  [187]  [188]  [189]  [190]  [191]  [192]  [193]  [194]  [195]  [196]  [197]  [198]  [199]  [200]  [201]  [202]  [203]  [204]  [205]  [206]  [207]  [208]  [209]  [210]  [211]  [212]  [213]  [214]  [215]  [216]  [217]  [218]  [219]  [220]  [221]  [222]  [223]  [224]  [225]  [226]  [227]  [228]  [229]  [230]  [231]  [232]  [233]  [234]  [235]  [236]  [237]  [238]  [239]  [240]  [241]  [242]  [243]  [244]  [245]  [246]  [247]  [248]  [249]  [250]  [251]  [252]  [253]  [254]  [255]  [256]  [257]  [258]  [259]  [260]  [261]  [262]  [263]  [264]  [265]  [266]  [267]  [268]  [269]  [270]  [271]  [272]  [273]  [274]  [275]  [276]  [277]  [278]  [279]  [280]  [281]  [282]  [283]  [284]  [285]  [286]  [287]  [288]  [289]  [290]  [291]  [292]  [293]  [294]  [295]  [296]  [297]  [298]  [299]  [300]  [301]  [302]  [303]  [304]  [305]  [306]  [307]  [308]  [309]  [310]  [311]  [312]  [313]  [314]  [315]  [316]  [317]  [318]  [319]  [320]  [321]  [322]  [323]  [324]  [325]  [326]  [327]  [328]  [329]  [330]  [331]  [332]  [333]  [334]  [335]  [336]  [337]  [338]  [339]  [340]  [341]  [342]  [343]  [344]  [345]  [346]  [347]  [348]  [349]  [350]  [351]  [352]  [353]  [354]  [355]  [356]  [357]  [358]  [359]  [360]  [361]  [362]  [363]  [364]  [365]  [366]  [367]  [368]  [369]  [370]  [371]  [372]  [373]  [374]  [375]  [376]  [377]  [378]  [379]  [380]  [381]  [382]  [383]  [384]  [385]  [386]  [387]  [388]  [389]  [390]  [391]  [392]  [393]  [394]  [395]  [396]  [397]  [398]  [399]  [400]  [401]  [402]  [403]  [404]  [405]  [406]  [407]  [408]  [409]  [410]  [411]  [412]  [413]  [414]  [415]  [416]  [417]  [418]  [419]  [420]  [421]  [422]  [423]  [424]  [425]  [426]  [427]  [428]  [429]  [430]  [431]  [432]  [433]  [434]  [435]  [436]  [437]  [438]  [439]  [440]  [441]  [442]  [443]  [444]  [445]  [446]  [447]  [448]  [449]  [450]  [451]  [452]  [453]  [454]  [455]  [456]  [457]  [458]  [459]  [460]  [461]  [462]  [463]  [464]  [465]  [466]  [467]  [468]  [469]  [470]  [471]  [472]  [473]  [474]  [475]  [476]  [477]  [478]  [479]  [480]  [481]  [482]  [483]  [484]  [485]  [486]  [487]  [488]  [489]  [490]  [491]  [492]  [493]  [494]  [495]  [496]  [497]  [498]  [499]  [500]   下一页

友情链接   |  联系我们  |  发表论文  |  论文发表  |   加入收藏

   @ 2005-2009 粤ICP备09006515号-2

QQ:790062161 TEL:15918888768