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51.
In 2006, Zhao et al. proposed a practical verifiable multi-secret sharing based on Yang et al.’s and Feldman’s schemes. In this paper we propose two efficient, computationally secure (t,n), and verifiable multi-secret sharing schemes based on homogeneous linear recursion. The first scheme has the advantage of better performance, a new simple construction and various techniques for the reconstruction phase. The second scheme requires fewer public values with respect to Zhao et al.’s and Shao and Cao schemes. These schemes are easy to implement and provide great capabilities for many applications. 相似文献
52.
PROMETHEE with Precedence Order in the Criteria (PPOC) as a New Group Decision Making Aid: An Application in Urban Water Supply Management 总被引:2,自引:2,他引:0
In this paper, a new group Multi-Criteria-Decision-Making (MCDM) method is introduced by combining two ??Preference Ranking Organization Method for Enrichment Evaluations (PROMETHEE)?? and ??Multi-attribute decision making with dominance in the criteria?? methods. PROMETHEE family of outranking methods is among the recently developed MCDM methods which have received lots of attention in the recent years because of its capacity in ranking finite set of alternative actions based on conflicting criteria. The second method helps the decision makers to consider ambiguity and imprecision of relative importance of each objective (criterion) without allocating importance weights to them. The proposed method of PROMETHEE with Precedence Order in the Criteria (PPOC) not only can address capabilities of PROMETHEE method just with determination of precedence order of criteria, but also can make it possible to have a group decision making environment with conflicting objectives. Operational management of an urban water supply system is a good example of a set of decision making problems with several objectives and Decision Makers (DMs). In this paper, PPOC method has been applied to the case study of Melbourne water supply system, previously analyzed in the literature, to assess a number of operation rules with respect to eight criteria evaluated under single or group decision-making situations. The satisfaction degree of each DM and the overall group ranking results have also been provided in the paper. The proposed method is applicable for different decision making problems in urban water supply management. 相似文献
53.
In this paper, we develop a design optimization methodology for switchable multi-port spiral inductors in fully integrated
wireless systems. The methodology simultaneously maximizes the inductor’s performance for multiple inductance values and operating
frequencies. We utilize multi-level optimization techniques to efficiently design the geometry of the switchable inductor
structure. The methodology can produce designs with significantly larger quality factors than those obtained by optimizing
the inductor design for a single inductance value and operating frequency. 相似文献
54.
Dusan Prelog Massoud Momeni Bogomir Horvat Manfred Glesner 《Analog Integrated Circuits and Signal Processing》2007,51(3):201-206
A low-power, multi-stage delta-sigma modulator with comparator-based switched-capacitor (CBSC) gain stages is presented. The
presented design eliminates the need for operational amplifiers and replaces them by comparators with current sources at their
outputs to alleviate the effects of continued technology scaling on analog and mixed-signal circuits. The proposed technique
significantly reduces power consumption and can be applied to switched-capacitor delta-sigma modulators of arbitrary order.
Based on the proposed methodology, a 2-1 cascade, single-bit, pseudo-differential switched-capacitor delta-sigma modulator
is developed and achieves a SNDR of 76.8 dB with an oversampling ratio of 64 at a clock frequency of 8 MHz. 相似文献
55.
Mosavi Amirhosein Sajedi Hosseini Farzaneh Choubin Bahram Goodarzi Massoud Dineva Adrienn A. Rafiei Sardooi Elham 《Water Resources Management》2021,35(1):23-37
Water Resources Management - Due to the rapidly increasing demand for groundwater, as one of the principal freshwater resources, there is an urge to advance novel prediction systems to more... 相似文献
56.
Mastrototaro J.J. Massoud H.Z. Pilkington T.C. Ideker R.E. 《IEEE transactions on bio-medical engineering》1992,39(3):271-279
Thin-film transmural cardiac multielectric arrays were fabricated using integrated-circuit processing techniques. Several substantial improvements were achieved over conventional handmade arrays such as a smaller cross-sectional area, a larger number of recording sites per needle, more accurately controlled size and spacing of the recording sites, smaller bipolar spacings, and higher throughout yield. These advantages allow for a higher density of closely spaced bipolar electrodes capable of monitoring complex voltage and gradient fields present during ventricular fibrillation and defibrillation. Both rigid and flexible arrays were fabricated and used in the acquisition of transmural electrical signals. The rigid multielectrode arrays were made of gold electrodes on a molybdenum substate, and the flexible arrays of silver and gold electrodes on a polyimide substrate. In vitro and in vivo testing of the thin-film transmural cardiac multielectrode arrays indicates that there are no adhesion or delamination problems observed during acute studies, no implantation difficulties, and that unipolar and bipolar recordings during normal sinus rhythm and injury potentials in unipolar recordings are similar to those obtained using the handmade electrodes. 相似文献
57.
The dependence of oxide thickness, and oxide thickness variation within a wafer and wafer-to-wafer on process variables was studied in rapid-thermal processing systems that differed in chamber configuration and construction, incoherent light source, and pyrometers used for temperature measurement. Mechanisms for oxide growth and oxide thickness variation in rapid-thermal oxidation are discussed. Thermally induced stress, lamp configuration, and convective cooling affected the oxide thickness variation within a wafer. Wafer-to-wafer oxide thickness variation depended on the material of chamber construction, quartz or metal, and was related to residual heating for longer oxidations. For the same processing conditions, the oxide thickness was different for different systems, due to temperature error and a photonic component to rapid-thermal oxidation. Analysis of empirical oxide thickness models revealed a silicon orientation effect and a mechanism related to oxidant transport that was common to rapid-thermal oxidation in different systems 相似文献
58.
Oxygen reduction electrodes, containing non-noble metal catalysts supported on high surface area carbon and wet-proofed with PTFE were tested under reaction conditions for the chlor-alkali electrolysis. Double-layer gas diffusion electrodes were prepared by rolling of an active layer and diffusion layer on a nickel wire screen, compressed and sintered at 300 °C. Electrochemical measurements for substantiating the activity and stability of the half-cells were conducted in 8 M NaOH by supplying oxygen at a cell temperature of 70 °C and a constant current load of 300 mA cm−2. An electrolysis cell with a dimensionally stable anode (DSA) and double-layered cathode was assembled, where 4.8 M NaCl and oxygen were supplied, respectively, for the production of chlorine and NaOH. The cell performances as well as stability of the electrodes were investigated at about 80 °C. This study shows that by replacing the high voltage consuming hydrogen-evolving reaction and by adopting highly active electrocatalysts as cathode materials, energy savings of more than 30% could be realized. 相似文献
59.
In this paper, we present a systematic synthesis methodology for fully integrated narrow-band CMOS low-noise amplifiers (LNAs) in high-performance system-on-chip (SoC) designs. The methodology is based on deterministic gradient-based numerical nonlinear optimization and the normal boundary intersection (NBI) method for Pareto optimization. We simultaneously optimize transistor widths, bias voltages, and input and output matching network passive components, which yields integrated inductor values that are more than one order of magnitude less than those generated by several existing equation-based LNA design techniques. By generating significantly smaller inductor values, we enable the SoC integration of the complete LNA. When the synthesized LNAs are characterized using circuit-level simulation, our methodology yields up to 35% and 58% improvement in noise figure and gain, respectively. 相似文献
60.
The interest in the association between human health and air pollution has grown substantially in recent years. Based on epidemiological studies in several countries, there is conclusive evidence of a link between particulate air pollution and adverse health effects. Considering that particulate matter may be the most serious pollutant in urban areas and that pollution-related illness results in financial and non-financial welfare losses, the main objective of this study is to assess the economic benefits of reducing particulate air pollution in Lebanese urban areas. Accordingly, the extent and value of health benefits due to decreasing levels of particulate in the air are predicted. Health impacts are expressed in both physical and monetary terms for saved statistical lives, and productivity due to different types of morbidity endpoints. Finally, the study concludes with a range of policy options available to mitigate particulate air pollution in urban areas. 相似文献