全文获取类型
收费全文 | 324篇 |
免费 | 8篇 |
专业分类
电工技术 | 2篇 |
化学工业 | 48篇 |
机械仪表 | 4篇 |
建筑科学 | 23篇 |
能源动力 | 8篇 |
轻工业 | 40篇 |
水利工程 | 1篇 |
石油天然气 | 1篇 |
无线电 | 37篇 |
一般工业技术 | 56篇 |
冶金工业 | 60篇 |
原子能技术 | 2篇 |
自动化技术 | 50篇 |
出版年
2023年 | 4篇 |
2022年 | 2篇 |
2021年 | 5篇 |
2020年 | 2篇 |
2019年 | 8篇 |
2018年 | 6篇 |
2016年 | 10篇 |
2015年 | 5篇 |
2014年 | 5篇 |
2013年 | 11篇 |
2012年 | 14篇 |
2011年 | 20篇 |
2010年 | 21篇 |
2009年 | 9篇 |
2008年 | 15篇 |
2007年 | 12篇 |
2006年 | 19篇 |
2005年 | 12篇 |
2004年 | 9篇 |
2003年 | 9篇 |
2002年 | 9篇 |
2001年 | 7篇 |
2000年 | 9篇 |
1999年 | 9篇 |
1998年 | 19篇 |
1997年 | 11篇 |
1996年 | 10篇 |
1995年 | 7篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 6篇 |
1989年 | 2篇 |
1987年 | 2篇 |
1983年 | 3篇 |
1981年 | 3篇 |
1978年 | 3篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1972年 | 4篇 |
1971年 | 2篇 |
1968年 | 2篇 |
1967年 | 1篇 |
1960年 | 1篇 |
1959年 | 1篇 |
1957年 | 1篇 |
1938年 | 1篇 |
1908年 | 1篇 |
排序方式: 共有332条查询结果,搜索用时 15 毫秒
1.
Matthias Zobel Joachim Denzler Benno Heigl Elmar Nöth Dietrich Paulus Jochen Schmidt Georg Stemmer 《Machine Vision and Applications》2003,14(1):26-34
Abstract. This contribution introduces MOBSY, a fully integrated, autonomous mobile service robot system. It acts as an automatic dialogue-based
receptionist for visitors to our institute. MOBSY incorporates many techniques from different research areas into one working
stand-alone system. The techniques involved range from computer vision over speech understanding to classical robotics.
Along with the two main aspects of vision and speech, we also focus on the integration aspect, both on the methodological
and on the technical level. We describe the task and the techniques involved. Finally, we discuss the experiences that we
gained with MOBSY during a live performance at our institute. 相似文献
2.
Andrea Engl Benno Kunz 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1995,63(3):257-261
Studies took place to investigate the effects of different nutrient conditions on the biosorption ability and selectivity of heavy metals by Saccharomyces cerevisiae. After having grown in media supplemented with additional glucose, ammonium, phosphate or cysteine, the yeast was exposed to an equimolar solution of lead, cadmium, zinc and copper. Lead removal from a mixed solution was significantly higher than that of copper, followed by zinc and cadmium. Generally, yeasts from cysteine-rich media showed greatest sorption capacity whereas phosphate addition influenced zinc selectivity. In addition, glucose, fructose and sucrose as carbon sources were examined. Cultures grown in glucose had a better uptake than those cultivated with fructose at an incubation time of 30 min. 相似文献
3.
Benno Krachler Mats Eliasson Hans Stenlund Ingegerd Johansson G?ran Hallmans Bernt Lindahl 《Nutrition journal》2006,5(1):34
Background
Body mass, as well as distribution of body fat, are predictors of both diabetes and cardiovascular disease. In Northern Sweden, despite a marked increase in average body mass, prevalence of diabetes was stagnant and myocardial infarctions decreased. A more favourable distribution of body fat is a possible contributing factor. 相似文献4.
Detailed Real-Time Urban 3D Reconstruction from Video 总被引:2,自引:0,他引:2
M. Pollefeys D. Nistér J.-M. Frahm A. Akbarzadeh P. Mordohai B. Clipp C. Engels D. Gallup S.-J. Kim P. Merrell C. Salmi S. Sinha B. Talton L. Wang Q. Yang H. Stewénius R. Yang G. Welch H. Towles 《International Journal of Computer Vision》2008,78(2-3):143-167
The paper presents a system for automatic, geo-registered, real-time 3D reconstruction from video of urban scenes. The system
collects video streams, as well as GPS and inertia measurements in order to place the reconstructed models in geo-registered
coordinates. It is designed using current state of the art real-time modules for all processing steps. It employs commodity
graphics hardware and standard CPU’s to achieve real-time performance. We present the main considerations in designing the
system and the steps of the processing pipeline. Our system extends existing algorithms to meet the robustness and variability
necessary to operate out of the lab. To account for the large dynamic range of outdoor videos the processing pipeline estimates
global camera gain changes in the feature tracking stage and efficiently compensates for these in stereo estimation without
impacting the real-time performance. The required accuracy for many applications is achieved with a two-step stereo reconstruction
process exploiting the redundancy across frames. We show results on real video sequences comprising hundreds of thousands
of frames. 相似文献
5.
Research in automatic text plagiarism detection focuses on algorithms that compare suspicious documents against a collection
of reference documents. Recent approaches perform well in identifying copied or modified foreign sections, but they assume
a closed world where a reference collection is given. This article investigates the question whether plagiarism can be detected
by a computer program if no reference can be provided, e.g., if the foreign sections stem from a book that is not available
in digital form. We call this problem class intrinsic plagiarism analysis; it is closely related to the problem of authorship verification. Our contributions are threefold. (1) We organize the algorithmic
building blocks for intrinsic plagiarism analysis and authorship verification and survey the state of the art. (2) We show
how the meta learning approach of Koppel and Schler, termed “unmasking”, can be employed to post-process unreliable stylometric
analysis results. (3) We operationalize and evaluate an analysis chain that combines document chunking, style model computation,
one-class classification, and meta learning. 相似文献
6.
Benno Barnitzke 《Datenschutz und Datensicherheit - DuD》2011,35(4):286-293
DuD Recht
DuD Recht 相似文献7.
Acceptance testing is a time-consuming task for complex software systems that have to fulfill a large number of requirements.
To reduce this effort, we have developed a widely automated method for deriving test plans from requirements that are expressed
in natural language. It consists of three stages: annotation, clustering, and test plan specification. The general idea is
to exploit redundancies and implicit relationships in requirements specifications. Multi-viewpoint techniques based on RM-ODP
(Reference Model for Open Distributed Processing) are employed for specifying the requirements. We then use linguistic analysis
techniques, requirements clustering algorithms, and pattern-based requirements collection to reduce the total effort of testing
against the requirements specification. In particular, we use linguistic analysis for extracting and annotating the actor,
process and object of a requirements statement. During clustering, a similarity function is computed as a measure for the
overlap of requirements. In the test plan specification stage, our approach provides capabilities for semi-automatically deriving
test plans and acceptance criteria from the clustered informal textual requirements. Two patterns are applied to compute a
suitable order of test activities. The generated test plans consist of a sequence of test steps and asserts that are executed
or checked in the given order. We also present the supporting prototype tool TORC, which is available open source. For the
evaluation of the approach, we have conducted a case study in the field of acceptance testing of a national electronic identification
system. In summary, we report on lessons learned how linguistic analysis and clustering techniques can help testers in understanding
the relations between requirements and for improving test planning. 相似文献
8.
Benno Stein 《International Journal on Software Tools for Technology Transfer (STTT)》2008,10(3):233-245
This paper is about tool support for knowledge-intensive engineering tasks. In particular, it introduces software technology
to assist the design of complex technical systems. There is a long tradition in automated design problem solving in the field
of artificial intelligence, where, especially in the early stages, the search paradigm dictated many approaches. Later, in
the so-called modern period, a better problem understanding led to the development of more adequate problem solving techniques.
However, search still constitutes an indispensable part in computer-based design problem solving—albeit many human problem
solvers get by without (almost). We tried to learn lessons from this observation, and one is presented in this paper. We introduce
design problem solving by functional abstraction which follows the motto: construct a poor solution with little search, which then must be repaired. For the domain of fluidic
engineering we have operationalized the paradigm by the combination of several high-level techniques. The red thread of this
paper is design automation, but the presented technology does also contribute in the following respects: (a) productivity
enhancement by relieving experts from auxiliary and routine tasks; (b) formulation, exchange, and documentation of knowledge
about design; (c) requirements engineering, feasibility analysis, and validation.
This research was supported by DFG grants Schw 120/56-3, KL 529/10-3, KL 529/7-3, and KL 529/10-1. 相似文献
9.
Dirk J. A. Senden Tom A. P. Engels Serge H. M. S?ntjens Leon E. Govaert 《Journal of Materials Science》2012,47(16):6043-6046
Polycarbonate is known to suffer from dramatic reductions in ductility upon exposure to hot, humid environments, such as during steam sterilization. Two phenomena have been proposed to be the main causes of this embrittlement: hydrolysis and microcavity formation. The present study focuses on a third phenomenon, whose contribution to the embrittlement has until now been considered insignificant: (physical) aging. By studying the influence of steam sterilization on the tensile deformation behavior of polycarbonate, it is shown that aging actually is one of the dominant factors in the embrittlement. 相似文献
10.
Scientometrics - Although scientists, like many other professionals, aspire to fame and recognition, research in the emergent field of fame and celebrity has as yet neglected to explore their fame... 相似文献