全文获取类型
收费全文 | 115篇 |
免费 | 2篇 |
专业分类
电工技术 | 2篇 |
化学工业 | 29篇 |
金属工艺 | 1篇 |
机械仪表 | 3篇 |
建筑科学 | 3篇 |
能源动力 | 4篇 |
无线电 | 2篇 |
一般工业技术 | 25篇 |
冶金工业 | 7篇 |
原子能技术 | 1篇 |
自动化技术 | 40篇 |
出版年
2023年 | 1篇 |
2022年 | 6篇 |
2021年 | 4篇 |
2019年 | 2篇 |
2018年 | 1篇 |
2017年 | 4篇 |
2016年 | 2篇 |
2015年 | 3篇 |
2014年 | 4篇 |
2013年 | 13篇 |
2012年 | 6篇 |
2011年 | 7篇 |
2010年 | 2篇 |
2009年 | 3篇 |
2008年 | 2篇 |
2007年 | 6篇 |
2006年 | 4篇 |
2005年 | 6篇 |
2004年 | 4篇 |
2003年 | 2篇 |
2002年 | 1篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 3篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1974年 | 1篇 |
1969年 | 2篇 |
1965年 | 1篇 |
1964年 | 2篇 |
1963年 | 2篇 |
1956年 | 1篇 |
1954年 | 2篇 |
排序方式: 共有117条查询结果,搜索用时 15 毫秒
41.
Luca Chittaro Elio Carchietti Luca De Marco Agostino Zampa 《User Modeling and User-Adapted Interaction》2011,21(4-5):407-440
Being able to promptly and accurately choose a proper course of action in the field is a crucial aspect of emergency response. For this reason, emergency medical services (EMS) rely on well established procedures that apply to the most frequent cases first responders encounter in their practice, but do not include special cases concerning (sensory, motor or cognitive) disabled persons. In these cases, first responders may end up applying suboptimal or possibly wrong procedures or lose precious time trying to adapt on-the-fly to the special case. This paper proposes both (i) a detailed patient model for EMS that can account for peculiar aspects of the many existing disabilities and (ii) an adaptive information system called PRESYDIUM (Personalized Emergency System for Disabled Humans) that provides tailored instructions in the field for helping medical first responders in dealing with disabled persons. More precisely, we will illustrate and discuss: (i) the design and development process of PRESYDIUM, (ii) the patient model, which is partly based on the ICF (International Classification of Functioning, Disability and Health) standard proposed by the World Health Organization, (iii) the knowledge base used by the system to provide tailored instructions to medical first responders, (iv) the Web-based architecture of the system, (v) the different interfaces??including one for mobile devices??the system provides to enable all the identified stakeholders (disabled persons, their families, clinicians, EMS call center operators, medical first responders) to easily access and possibly provide data to the system, (vi) the evaluation of the validity of the patient model and of the system usability which has been conducted with end users. 相似文献
42.
43.
44.
Hathaway Starke R.; Reynolds Phyllis C.; Monachesi Elio D. 《Canadian Metallurgical Quarterly》1969,33(4):383
Compared a droupout group and nondropout group on several variables. The data both predated and postdated the time of school dropout. For analysis the groups were subdivided on time of marriage and intelligence. Dropouts have a higher separation and divorce rate, even when time of marriage is controlled; they have larger families, but apparently only because they have been married longer. In general they marry into a lower socioeconomic status, but only girls from blue-collar families show a downward social mobility. When grouped by intelligence, high and medium intelligence dropouts do not show the upward social mobility that nondropouts do. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
45.
Massimo Alioto Elio Consoli Gaetano Palumbo 《International Journal of Circuit Theory and Applications》2012,40(8):815-834
In this paper, the adoption of general metrics of the energy‐delay tradeoff is investigated to achieve energy‐efficient design of digital CMOS very large‐scale integrated circuits. Indeed, as shown in a preliminary analysis on the performance of various commercial microprocessors, a wide range of EiDj metrics is typically adopted. Physical interpretation and interesting properties for the designs minimizing EiDj metrics are provided together with the adoption of the Logical Effort theory to define practical design constraints. Two design examples in a 65‐nm CMOS technology are also reported to exemplify the theoretical results. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
46.
The paper deals with the modeling and the development of a numerical procedure for the analysis of shape-memory alloy (SMA)
elements in order to predict the main features of SMA devices. A 3D SMA model in the framework of small strain theory is developed
starting from the thermo-mechanical model proposed by Souza et al. (Eur J Mech A/Solids 17:789–806, 1998) and modified by
Auricchio and Petrini (Int J Numer Methods Eng 55:1255–1284, 2002). The aim of this paper is to propose some more modifications
to the original model, to derive its consistent 1D formulation, to clarify the mechanical meaning of the material parameters
governing the constitutive model. A robust time integration algorithm is developed in the framework of the finite element
method and a new beam finite element is proposed. Some numerical applications and a comparison with experimental data available
in literature are carried out in order to assess the ability of the proposed model to describe the SMA behavior. 相似文献
47.
48.
49.
50.
Mariagiovanna Minutillo Alessandra Perna Pasquale Di Trolio Simona Di Micco Elio Jannelli 《International Journal of Hydrogen Energy》2021,46(16):10059-10071
This paper presents the economic assessment of novel refueling stations, in which through advanced and high efficiency technologies, the polygeneration of more energy services like hydrogen, electricity and heat is carried out on-site.The architecture of these polygeneration plants is realized with a modular structure, organized in more sections.The primary energy source is ammonia that represents an interesting fuel for producing more energy streams. The ammonia feeds directly the SOFC that is able to co-generate simultaneously electricity and hydrogen by coupling a high efficiency energy system with hydrogen chemical storage.Two system configurations have been proposed considering different design concepts: in the first case (Concept_1) the plant is sized for producing 100 kg/day of hydrogen and the power section is sized also for self-sustaining the plant electric power consumption, while in the second one (Concept_2) the plant is sized for producing 100 kg/day of hydrogen and the power section is sized for self-sustaining the plant electric power consumption and for generating 50 kW for the DC fast charging.The economic analysis has been carried out in the current and target scenarios, by evaluating, the levelized cost of hydrogen (LCOH), the levelized cost of electricity (LCOE), the Profitability Index (PI), Internal rate of Return (IRR) and the Discounted Payback Period (DPP).Results have highlighted that the values of the LCOH, for the proposed configurations and economic scenarios, are in the range 6–10 €/kg and the values of the LCOE range from 0.447 €/kWh to 0.242 €/kWh.In terms of PI and IRR, the best performance is achieved in the Concept_1 for the current scenario (1.89 and 8.0%, respectively). On the contrary, in the target scenario, thanks to a drastic costs reduction the co-production of hydrogen and electricity as useful outputs, becomes the best choice from all economic indexes and parameters considered. 相似文献