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排序方式: 共有496条查询结果,搜索用时 13 毫秒
51.
Vera Sheinman Christiane Fellbaum Isaac Julien Peter Schulam Takenobu Tokunaga 《Language Resources and Evaluation》2013,47(3):797-816
We propose a new semantic relation for gradable adjectives in WordNet, which enriches the present, vague, similar relation with information on the degree or intensity with which different adjectives express a shared attribute. Using lexical-semantic patterns, we mine the Web for evidence of the relative strength of adjectives like “large”, “huge” and “gigantic” with respect to their attribute (“size”). The pairwise orderings we derive allow us to construct scales on which the adjectives are located. To represent the intensity relation among gradable adjectives in WordNet, we combine ordered scales with the current WordNet dumbbells based on the relation between a pair of central adjectives and a group of undifferentiated semantically similar adjectives. A new intensity relation links the adjectives in the dumbbells and their concurrent representation on scales. Besides capturing the semantics of gradable adjectives in a way that is both intuitively clear as well as consistent with corpus data, the introduction of an intensity relation would potentially result in several specific benefits for NLP. 相似文献
52.
We present a deterministic kinetic data structure for the facility location problem that maintains a subset of the moving
points as facilities such that, at any point of time, the accumulated cost for the whole point set is at most a constant factor
larger than the optimal cost. In our scenario, each point can change its status between client and facility and moves continuously
along a known trajectory in a d-dimensional Euclidean space, where d is a constant. 相似文献
53.
Christiane Jasmin Reinert‐Weiss Holger Baur Sheikh Abdullah Al Nusayer David Duhme Norbert Frühauf 《Journal of the Society for Information Display》2017,25(2):90-97
Conventional adaptive driving beam headlamps are limited in achieving still higher quantities of switchable pixels by the number of LEDs and movable elements needed. In this paper, it is shown that by integrating an active matrix liquid crystal display module, it is possible to realize fully adaptive high‐resolution headlights without mechanical elements and a finite number of LED with 30 k switchable pixels. 相似文献
54.
Matthias M. M��ller Harald R. Haakh Tommaso Calarco Christiane P. Koch Carsten Henkel 《Quantum Information Processing》2011,10(6):771-792
Atom chips are a promising candidate for a scalable architecture for quantum information processing provided a universal set of gates can be implemented with high fidelity. The difficult part in achieving universality is the entangling two-qubit gate. We consider a Rydberg phase gate for two atoms trapped on a chip and employ optimal control theory to find the shortest gate that still yields a reasonable gate error. Our parameters correspond to a situation where the Rydberg blockade regime is not yet reached. We discuss the role of spontaneous emission and the effect of noise from the chip surface on the atoms in the Rydberg state. 相似文献
55.
Artificial added mass instabilities in sequential staggered coupling of nonlinear structures and incompressible viscous flows 总被引:1,自引:0,他引:1
Christiane Förster Wolfgang A. Wall 《Computer Methods in Applied Mechanics and Engineering》2007,196(7):1278-1293
Within this paper the so-called artificial added mass effect is investigated which is responsible for devastating instabilities within sequentially staggered Fluid-structure Interaction (FSI) simulations where incompressible fluids are considered.A discrete representation of the added mass operator MA is given and ‘instability conditions’ are evaluated for different temporal discretisation schemes. It is proven that for every sequentially staggered scheme and given spatial discretisation of a problem, a mass ratio between fluid and structural mass density can be found at which the coupled system becomes unstable. The analysis is quite general and does not depend upon the particular spatial discretisation schemes used. However here special attention is given to stabilised finite elements employed on the fluid partition. Numerical investigations further highlight the results. 相似文献
56.
Christiane Gresse von Wangenheim Marcello Thiry Djone Kochanski 《Empirical Software Engineering》2009,14(4):418-452
Software measurement is considered important in improving the software process. However, teaching software measurement remains
a challenging issue. Although, games and simulations are regarded powerful tools for learning, their learning effectiveness
is not rigorously established. This paper describes the results of an explorative study to investigate the learning effectiveness
of a game prototype on software measurement in order to make an initial judgment about its potential as an educational tool
as well as to analyze its appropriateness, engagement and strengths & weaknesses as guidance for further evolution. Within
the study, a series of experiments was conducted in parallel in three master courses in Brazil. Results of the study reveal
that the participants consider the content and structure of the game appropriate, but no indication for a significant difference
on learning effectiveness could be shown.
相似文献
Djone KochanskiEmail: |
57.
Christiane M. Jaeckle John F. MacGregor 《Chemometrics and Intelligent Laboratory Systems》2000,50(2):199-210
A methodology, presented by Jaeckle and MacGregor [C.M. Jaeckle and J.F. MacGregor, Product Design Through Multivariate Statistical Analysis of Process Data, AIChE J. 44 (5) (1998) 1105–1118.], for finding a window of process operating conditions within which a product with specified quality characteristics can be produced is applied to two industrial polymerization processes. The approach uses historical data available on the process operating conditions and on the corresponding product quality for a range of existing product grades. Latent variable models — built using the existing data — are inverted to obtain a window of operating conditions, which are not only capable of yielding the desired product but are also consistent with past operating procedures and constraints. A semi-batch emulsion polymerization process for manufacturing various grades of a copolymer latex, and a batch solution polymerization process for manufacturing a range of polymer resins are considered. 相似文献
58.
This study investigated the effects of organic and colloidal fouling on the removal of a representative micropollutant sulphamethoxazole by two commercially available NF membranes. Alginate, bovine serum albumin and colloidal silica were selected as model foulants to simulate hydrophilic and hydrophobic organic fractions, and colloidal matter that are often found in treated effluent and surface water. Membrane fouling was related to the membrane and foulant characteristics and subsequently the separation behaviour of the micropollutant sulphamethoxazole under different solution pH. On the basis of these results, it was confirmed that membrane fouling is strongly dependent on both the foulant and membrane characteristics. The complex relationship among retention mechanisms, fouling mechanisms and the effects of fouling on retention was systematically delineated. Of the three model foulants selected for this study, colloidal fouling resulted in the most significant reduction in retention of sulphamethoxazole as well as inorganic salts, while flux decline as a result of colloidal fouling was quite moderate. Reduction in retention caused by fouling was attributed to a phenomenon known as cake-enhance concentration polarisation, which was a predominant mechanism of colloidal fouling. In addition, the reported results suggested that the effect of fouling on retention is also membrane pore size dependent. 相似文献
59.
Christiane Hipp 《AI & Society》1999,13(1-2):88-106
The new mode of knowledge production is seen as a distinct form of economic organisation used for exchanging and creating knowledge. The emphasis is laid on the role of business services in innovative networks as carriers of knowledge and intermediates between science (knowledge creator) and their customers (knowledge user). The empirical analysis shows that knowledge-intensive business services are able to make existing knowledge useful for, their customers, improving the customer's performance and productivity and contributing to technological and structural change.This paper is based on a presentation at the International Conference on Science, Technology and Society, 16–22 March 1998, Tokyo. 相似文献
60.
M. Pischetsrieder Ursula Gro? Christiane Schoetter 《Zeitschrift für Lebensmitteluntersuchung und -Forschung A》1999,209(1):172-177
Two HPLC methods with diode array detection were used to separate Maillard products from milk components. The Maillard products
4-(β-d-galactopyranosyloxy)-2-hydroxy-2-methyl-2H-pyran-3(6H)-one (2), 1-[3-(β-d-galactopyranosyloxy)-2-furanyl]-1-ethanone (4), 4-(β-d-galactopyranosyloxy)-5-(hydroxymethyl)-2-methyl-3(2H)-furanone (5), isomaltol (7), maltol (9), 2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one (6), and 5-hydroxymethyl-2-furfuraldehyde (8) were determined using a water-methanol gradient. Furthermore, 4,5-dihydroxy-2-(β-d-galactopyranosyloxy)-5-methyl-2-cyclopenten-1-one (3) was separated from the milk components by applying the interaction reagent octylamine. Several heated or processed milk
samples were analyzed, and formation of the Maillard products was determined and quantified. Thus it was found that 2 and 3 are early products of the Maillard reaction in milk, whereas after prolonged heating 4, 5, and particularly 9 and 6 become more important. Compounds 7 and 8 were not detected, even if the samples were heated under stringent conditions. 相似文献