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1.
The development of the temporomandibular joint: a review with regard to the lateral pterygoid muscle
LC Naidoo 《Canadian Metallurgical Quarterly》1993,48(4):189-194
This review sets out to explore the relationship between the lateral pterygoid muscle and the meniscus. It examines the embryological evidence to explain the controversy surrounding the apparent morphological discrepancy in the attachment of the lateral pterygoid muscle to the meniscus. It shows that the contribution of the lateral pterygoid muscle to the formation of the meniscus remains in dispute. Morphogenetic studies have not been able to support either one or other viewpoint and no direct conclusions can therefore be made on the embryology of the temporomandibular joint. 相似文献
2.
FRCT: fuzzy-rough classification trees 总被引:1,自引:1,他引:0
Using fuzzy-rough hybrids, we have proposed a measure to quantify the functional dependency of decision attribute(s) on condition
attribute(s) within fuzzy data. We have shown that the proposed measure of dependency degree is a generalization of the measure
proposed by Pawlak for crisp data. In this paper, this new measure of dependency degree has been encapsulated into the decision
tree generation mechanism to produce fuzzy-rough classification trees (FRCT); efficient, top-down, multi-class decision tree
structures geared to solving classification problems from feature-based learning examples. The developed FRCT generation algorithm
has been applied to 16 real-world benchmark datasets. It is experimentally compared with the five fuzzy decision tree generation
algorithms reported so far, and the rough decomposition tree algorithm. Comparison has been made in terms of number of rules,
average training time, and classification accuracy. Experimental results show that the proposed algorithm to generate FRCT
outperforms existing fuzzy decision tree generation techniques and rough decomposition tree induction algorithm.
Dr. Rajen Bhatt has obtained his B.E. and M.E. both in Control and Instrumentation, from S.S. Engineering College, Bhavnagar, and from Delhi College of Engineering, New Delhi in 1999 and 2002, respectively. He has obtained his Ph.D. from the Department of Electrical Engineering, Indian Institute of Technology Delhi, INDIA in 2006. He was actively engaged in the development of multimedia course on Control Engineering under the National Program on Technology Enabled Learning (NPTEL). He is a regular reviewer of International Journals like Pattern Recognition, Information Sciences, Pattern Analysis and Applications, and IEEE Trans. on Systems, Man and Cybernatics. Since June 2005, he is working with Imaging team of Samsung India Software Centre as a Lead Engineer. He also serves as a Member of Patent Review Committee at Samsung. He has published several research papers in reputed journals and conferences. His current research interests are Pattern Classification and Regression, Soft Computing, Data mining, Patents and Trademarks, and Information Technology for Education. He holds an expertise over industry standard software project management. Dr. M. Gopal has obtained his B.Tech. (Electrical), M.Tech. (Control systems), and Ph.D. (Control Systems) degrees. all from Birla Institute of Technology and Science, Pilani in 1968, 1970, and 1976, respectively. He has been in the teaching and research field for the last three and half decades; associated with NIT Jaipur, BITS Pilani, IIT Bombay, City University London, and University Technology Malaysia, and IIT Delhi. Since January 1986 he is a Professor with the Electrical Engineering Department, Indian Institute of Technology Delhi. He has published six books in the area of Control Engineering, and a video course on Control Engineering including complete presentation and student questionnaires. He has also published interactive web-compatible multimedia course on Control Engineering, under National Program on Technology Enabled Learning (NPTEL). He has published several research papers in referred journals and conferences. His current research interests include Machine learning, Soft computing technologies, Intelligent control, and e-Learning. 相似文献
Rajen B. BhattEmail: |
Dr. Rajen Bhatt has obtained his B.E. and M.E. both in Control and Instrumentation, from S.S. Engineering College, Bhavnagar, and from Delhi College of Engineering, New Delhi in 1999 and 2002, respectively. He has obtained his Ph.D. from the Department of Electrical Engineering, Indian Institute of Technology Delhi, INDIA in 2006. He was actively engaged in the development of multimedia course on Control Engineering under the National Program on Technology Enabled Learning (NPTEL). He is a regular reviewer of International Journals like Pattern Recognition, Information Sciences, Pattern Analysis and Applications, and IEEE Trans. on Systems, Man and Cybernatics. Since June 2005, he is working with Imaging team of Samsung India Software Centre as a Lead Engineer. He also serves as a Member of Patent Review Committee at Samsung. He has published several research papers in reputed journals and conferences. His current research interests are Pattern Classification and Regression, Soft Computing, Data mining, Patents and Trademarks, and Information Technology for Education. He holds an expertise over industry standard software project management. Dr. M. Gopal has obtained his B.Tech. (Electrical), M.Tech. (Control systems), and Ph.D. (Control Systems) degrees. all from Birla Institute of Technology and Science, Pilani in 1968, 1970, and 1976, respectively. He has been in the teaching and research field for the last three and half decades; associated with NIT Jaipur, BITS Pilani, IIT Bombay, City University London, and University Technology Malaysia, and IIT Delhi. Since January 1986 he is a Professor with the Electrical Engineering Department, Indian Institute of Technology Delhi. He has published six books in the area of Control Engineering, and a video course on Control Engineering including complete presentation and student questionnaires. He has also published interactive web-compatible multimedia course on Control Engineering, under National Program on Technology Enabled Learning (NPTEL). He has published several research papers in referred journals and conferences. His current research interests include Machine learning, Soft computing technologies, Intelligent control, and e-Learning. 相似文献
3.
Mpho Sandra Malaka Kersch Naidoo John Kabuba 《Chemical Engineering Communications》2017,204(7):813-819
Siphonochilus aethiopicus is an indigenous South African plant also known as African ginger. It has often been used for its medicinal properties to treat various ailments such as flu, colds, and so forth. The research aim of this study was to optimize the process parameters of steam distillation for the extraction of oil from African ginger rhizomes. This technology is the oldest and well known for extracting essential oils due to its economic viability and the higher final oil purity. The effects of operating parameters such as extraction duration, moisture content, particle size, and temperatures between 80°C and 100°C were studied for maximum oil recovery. The oil recovery of 0.61% (w/w) was achieved after 270?min of extraction time, using 6.37% (dry) moisture content of particle size 2.4?mm–4?mm at a maximum temperature of 100°C. Fick’s first law was used to mathematically model the experimental data of this study. 相似文献
4.
Consistent and proper condom use is pivotal in preventing HIV infection. HIV prevalence in South Africa is among the highest in the world, with the construction industry especially affected, yet little is known about condom use by construction workers and the determinants thereof. Data were gathered from 512 site-based workers in the Western Cape. A theoretical model explaining condom use as a function of demographic factors, HIV knowledge, substance usage and risky sexual behaviour (excluding condom use) was proposed and tested using regression and structural equations modelling. The findings indicated that age, gender and level of education were indirect determinants of condom use, with higher levels of education predicting better AIDS-related knowledge. Higher levels of risky sexual behaviour were associated with more frequent use of condoms, suggesting greater awareness of risk. Condom use was adversely affected by greater alcohol and drug use, probably as a result of diminished capacity to assess risk. Finally, lower and not higher levels of AIDS-related knowledge were associated with better condom use, suggesting that improved knowledge of HIV transmission may work contrary to safe sex practice if it lulls the person into a false sense of confidence. Recommendations for targeted workplace interventions are proposed. 相似文献
5.
Swanand J. Deodhar K.B.C. Saxena Rajen K. Gupta Mikko Ruohonen 《The Journal of Strategic Information Systems》2012,21(4):274-294
The open source approach to software development has been used by software organizations in tandem with their existing business models, which are based on proprietary software licensing. This led to the creation of hybrid business models that merge open source and proprietary paradigms. This paper explores the practices used by software product vendors using hybrid business models and proposes strategies emerging out of these practices using interpretive, single case study research design. 相似文献
6.
T.E. Derry E.K. Nshingabigwi M. Levitt S.R. Naidoo 《Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms》2009,267(16):2705-2707
It has formerly been shown that low-damage levels, produced during the implantation doping of diamond as a semiconductor, anneal easily while high levels “graphitize” (above about 5.2 × 1015 ions/cm2). The difference in the defect types and their profiles, in the two cases, has never been directly observed. We have succeeded in using cross-section transmission electron microscopy to do so. The experiments were difficult because the specimens must be polished to ∼40 μm thickness, then implanted on edge and annealed, before final ion beam thinning to electron transparency. The low-damage micrographs reveal some deeply penetrating dislocations, whose existence had been predicted in earlier work. 相似文献
7.
Abstract
We derive a priori error estimates in the finite element method for nonselfadjoint elliptic and parabolic interface problems
in a two-dimensional convex polygonal domain. Optimal H
1-norm and sub-optimal L
2-norm error estimates are obtained for elliptic interface problems. For parabolic interface problems, the continuous-time
Galerkin method is analyzed and an optimal order error estimate in the L
2(0,T;H
1)-norm is established. Further, a discrete-in-time discontinuous Galerkin method is discussed and a related optimal error
estimate is obtained.
Keywords: Elliptic and parabolic interface problems, finite element method, spatially discrete scheme, discontinuous Galerkin method,
error estimates
Mathematics Subject Classification (1991): 65N15, 65N20 相似文献
8.
Rajen B. Patel Victor Stepanov Sean Swaszek Ashok Surapaneni Hongwei Qiu 《Propellants, Explosives, Pyrotechnics》2016,41(1):114-119
Nanocrystalline explosives offer a number of advantages in comparison to conventional energetics including reduced sensitivity and improved mechanical properties. In this study, formulations consisting of 90 % hexanitro‐hexaazaisowurtzitane (CL‐20) or cyclotrimethylene trinitramine (RDX) and 10 % polyvinyl alcohol (PVOH) were prepared with mean crystal sizes ranging from 200 nm to 2 μm. The process to create these materials used a combination of aqueous mechanical crystal size reduction and spray drying. The basic physical characteristics of these formulations were determined using a variety of techniques, including scanning electron microscopy, X‐ray diffraction, and Raman spectroscopy. Compressive stress‐strain tests on pressed pellets revealed that the mechanical properties of the compositions improved with decreasing crystal size, consistent with Hall‐Petch mechanics. In the most extreme case (involving CL‐20/PVOH formulations), crystal size reduction from 2 μm to 300 nm improved compressive strength and Young’s modulus by 126 % and 61 %, respectively. These results serve to highlight the relevance of structure‐property relationships in explosive compositions, and particularly elucidate the substantial benefits of reducing the high explosive crystal size to nanoscale dimensions. 相似文献
9.
Wilkinson A.J. Randall E.W. Cilliers J.J. Durrett D.R. Naidoo T. Long T. 《IEEE sensors journal》2005,5(2):300-307
This paper describes the design of a 16-electrode high-speed (1000 frames/s) electrical resistance tomography system with real-time visualization. The instrument utilizes a switched dc current pulse technique in conjunction with parallel data acquisition to achieve the high-data capture rates. The reconstruct algorithm is implemented using a single iteration Newton-Raphson method, which executes in under 1 ms. Data sets are presented that verify its operation. A calibration technique is described which improves the sensitivity of the current pulse measuring system and allows phenomena such as the dynamics of nonuniform slurries and gas distribution in aeration systems to be investigated. Furthermore, the calibration scheme described compensates significantly for the effect of impellers and baffles present in the measuring tank and allows more accurate reconstructions to be performed in the areas of interest. 相似文献
10.
Rajen S. Sidhu Shantanu V. Madge Xin Deng Nikhilesh Chawla 《Journal of Electronic Materials》2007,36(12):1615-1620
We report on the nature of the orientation of Ag3Sn and the Ag3Sn/Sn interface in Sn-3.5Ag solder. Orientation imaging microscopy (OIM) and transmission electron microscopy (TEM) were used
to characterize the orientation and nature of the interface, respectively. OIM and TEM showed that Sn-3.5Ag containing spherical
Ag3Sn particles does not have a preferred orientation with respect to the Sn matrix. However, needle-like Ag3Sn formed during slower cooling appeared to have a preferred orientation within individual Sn colonies. The interface between
Sn and Ag3Sn appeared to be incoherent, as confirmed by high-resolution TEM analysis. 相似文献