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1.
近年来,物联网(Internet of Things,IoT)产业受到许多的关注,世界各国均视其为潜在无限商机的高科技产业,并投入大量的资源从事研发与推广。由于物联网的应用非常广泛,且透过物联网技术人类得以提升生活质量,让生活更加便利,因此,本论文首先简介物联网的背景及应用,并介绍其基本概念与架构。接着,本论文以「无线感测真菌人文树道」为例,针对物联网技术应用于人文艺术领域进行说明,并详细叙述其所使用到之各项软件、韧体及硬件技术,透过真菌的感测、无线通信及异质网络连网功能的设计,使真菌网络成为物联网在人文艺术应用的一个重要典范。 相似文献
2.
尽管许多人可能并没有意识到,各类卡已经被广泛应用到我们的日常生活当中。其中,信用卡,现金卡,驾驶执照,等等,其实与钱包同等重要。为了防止这些卡被非法使用,用户认证是必不可少的。最常用的用户认证方法就是要求用户提供某些个人信息。如果用户提供的信息与卡中记录的信息一致,我们就认为用户是合法的。然而如果个人信息被泄露,卡就有可能被非法使用。本论文的目的就是要提供一种新的基于图像变形的卡用户认证方法。其基本思路是把真正持卡人的脸部图像通过图像变形隐藏到某个覆盖数据下,并把恢复原图像所需要的钥匙信息分散保存到卡,终端,服务器等不同地方。在用户使用卡的时候,认证系统可以利用反变形技术恢复原图像,让受权人察知到用户的真伪,从而有效地保护持卡人的权益。 相似文献
3.
Regional partnerships have grown popular as mechanisms to address public goods that transcend local boundaries, but we know little about their effectiveness. For example, what impact do regional economic development partnerships (REDPs), cooperative organizations of local governments, nonprofits and business organizations have on the economies of metropolitan areas? This article employs survival analysis and multilevel growth curve models to examine how the emergence of regional partnership arrangements influences patterns of economic development in U.S. metropolitan areas. The results suggest that, whereas these organizations do not make a great difference in some metro areas, in densely populated and politically fragmented metropolitan areas personal incomes, business firms, and employment grew significantly with the emergence of REDPs. Furthermore, state level factors, such as intergovernmental grant funding, are found to have positive influences. In conclusion, we discuss regional partnerships as solutions to institutional collective action problems in economic development and other policy arenas. 相似文献
4.
Rice flour and yellow or white corn flour were combined at 50, 60 and 70% levels with mechanically deboned turkey and extrusion processed at 104C and 121C. The texture of the extrudates was evaluated by Warner-Bratzler shear (WBS), and flour concentration had more effect on the WBS values than flour type; treatments with 70% flour had significantly greater WBS values. Corn flour treatments and low temperature extrusion resulted in greater TBA values. Proximate composition of extrudates confirmed moisture losses during extrusion and that high temperature processing had mixed results on ether-extractable compounds. 相似文献
5.
Sodium beta-alumina solid electrolytes were prepared containing up to 7.5 wt% SiO2 and their density, soda content, micro-structure, and ionic resistivity were studied. The resulting microstructures have glassy sodium ahminosilicate phases inhomogeneously distributed. The glassy phase collects preferentially at triple grain junctions, but occasionally penetrates along some grain boundaries as a thin layer (10 to 20 Å). Alpha-alumina is also present, especially with high silica content and when the samples are not protected with β-alumina powder during sintering. The total specific ionic resistivity follows a dependence on silicate content typical of 2-phase mixtures. 相似文献
6.
利用数值分析,研究影响黏土层中基坑挡土墙最大变形量的参数,根据参数研究的结果,利用复回归分析,给出挡土墙最大变形量的简易评估法。然后利用简易评估法,预测4个台北基坑案例的连续墙最大变形量,并与现场监测结果进行比较。结果显示:预测的最大变形量在0.85~1.15倍监测值范围内。因此,本文给出的简易评估法,可为初步预测、设计及最后检核设计成果提供参考。 相似文献
7.
Glass transition temperatures of yellow and white corn cakes were investigated within the moisture range of 2 to 32% (w/w) using dynamic differential scanning calorimetry. All measurements were conducted at 10°C/min heating rate, 30 sec equilibrium period, and 1°C amplitude. Effects of water plasticization on corn cakes were predicted by the Gordon-Taylor's equation. Moisture sorption isotherms were established using BET and GAB equations. Relationships were found among glass transition temperature, moisture content and cake texture. The loss of crispness of corn cakes occurred within the glassy state. The initial loss of crispness occurred around monolayer moisture content, and the complete loss of crispness occurred at about 9% moisture with the highest hardness. 相似文献
8.
Computerized texture profile analysis and a computer-simulated model of protein monomer complexation were used to study egg white gelation. The results showed that the parameter Kn, an association equilibrium constant, was large so that the monomer to monomer complex reaction essentially went to completion. Approximately 8 to 10 protein monomer units combined to form the egg white gel. The monomer complex primarily contributed to the hardness of egg white. 相似文献
9.
Effects of Salt, Sugar and Screw Speed on Processing and Product Variables of Corn Meal Extruded with a Twin-Screw Extruder 总被引:1,自引:0,他引:1
The effects of screw speed and additives (sugar and salt) on processing and product variables of corn meal extruded with a twin-screw extruder were studied. Higher salt (0–3%) and sugar concentrations (0–4%) in the feed decreased the die pressure, % torque and specific energy. But at 6 and 8%, sugar increased the three processing parameters. Higher screw speed (250 vs 200 rpm) decreased die pressure and % torque, but increased specific energy. The addition of salt and sugar enhanced extrudate radial and axial expansions, but reduced product bulk density and breaking strength. An increase in screw speed decreased radial expansion and bulk density, but increased axial expansion and breaking strength. 相似文献
10.
The feasibility of a CO2 evolution method using an IR analyzer to evaluate the shelf life of refrigerated (4deg;C) catfish was investigated. Aerobic plate count (APC), and isoelectric focusing (IEF) of samples were compared with the CO2 evolution rate (CER) determinations. The increase in CER (25.78 to 195.63 Lg?1h?1) for farm raised catfish stored from 0 to 10 days correlated highly with APCs (4.32 to 10.24 log CFU g?1). The IEF data also confirmed the APC and CER results. Catfish spoilage was evident after 6 days at 4°C. Direct measurement of CER is a rapid and effective method to determine the microbial quality of catfish. 相似文献