华刚光电2月18日起更名为科锐光电

本刊讯（记者陈娟）华刚光电去年被美国cree公司并购，近日，该公司将正式改头换一面，成为美国cree公司的一部分，从2008年2月18日始，以下所属公司名称正式变更如下：     

Surge arresters. Protecting equipment from heatstroke

The authors outline how the main consideration for properly designing a ZnO arrester is the thermal behavior of its components (i.e., their heat transfer properties). They argue that the analysis should be carried out not only in the steady-state of the device, but also in the dynamic and the transient states. Each element must be designed so that the energy handling capability of the assembly is appropriate for the specific duty. Even though manufacturers have achieved outstanding progress in ZnO technology, researchers are working to develop even better devices     

高压交联聚乙烯电缆交流耐压试验中的问题

介绍了珠海发电厂１号主变２２０ｋＶ ＸＬＰＥ电缆的交流耐压交接试验中出现的问题、处理的经过及试验方法和试验数据,分析了问题产生的原因。     

Where did the U.S. patent laws come from?

Where did the U.S. patent laws come from? One answer is from from the greed of English kings and queens. To raise money for themselves and their friends, the kings and queens of England adopted a policy of granting monopolies called “letters patents” for everyday goods such as vinegar, wine, salt, paper, oil, bottles, you name it. The crown sold these letters patents to brokers (or gave them to friends and supporters), who in turn sold them to particular companies interested in trading in the various goods. Over the years the U.S. Congress has enacted a series of comprehensive Patent Statutes, the first of which went into effect in 1790 and the most recent of which was enacted in 1952. Congress has also regularly fine-tuned the Patent Statutes in major and minor ways to respond to perceived needs in the country's continuing efforts to encourage innovation and thus grow the economy. Various stages of U.S. patent law can be identified in this process of legislating rewards for innovation. Initially, before 1836, U.S. patents were granted without examination, as is still done in some parts of the world. This left the issue of patent validity solely to the courts, which was unsatisfactory for a growing economy. In response, Congress created the Patent Office in 1836 and directed that Office to conduct a thorough examination of the prior art before a patent was issued. The Patent Office also was charged with resolving disputes between rival inventors and disseminating the technical information contained in patents to the public     

What the U.S. Could Learn from Western Europe and Elsewhere

The experience overseas suggests that FERC has more thinking to do about the regulatory framework for a competitive market. Among the flaws in the scheme outlined in the Notice of Proposed Rulemaking is the notion of having the “Transmission Service Provider” fulfill some regulatory functions.     

2003年1-11月全国主要家用电器产品产量

产品名称累计11月比去年同期增长%累计11月彩色电视机6217.90786.7628.937.0录像机1653.65169.265.70.4收音机4391.59462.979.827.5组合音响4027.39509.121.47.5家用洗衣机1675.83244.4327.041.6吸尘器1817.49236.1336.420.4家用电冰箱1949.16156.0427.334.0产品名称累计11月比去年同期增长%累计11月冷冻箱505.6337.208.26.2电风扇10207.30741.4011.1110.5房间空调器4361.46328.9343.2110.8吸油烟机347.6142.0313.6-3.9电饭锅3199.91475.1544.569.8移动电话机15759.941902.6847.9624.492003年1-11月全国主要家用电器产品产量$国家统计局…     

2004年1-5月全国主要家用电器产品产量

产品名称1-5月比去年同期增长%累计5月累计5月彩色电视机2716.45502.7713.9022.30录像机1029.56219.8247.3044.20收音机2122.56475.4611.9023.70组合音响1664.01402.002.607.20家用洗衣机912.53152.4325.9034.70吸尘器851.19169.414.10-21.40产品名称月比去年同期增长累计5月累计5月家用电冰箱1128.47290.1435.1045.20冷柜306.1062.0222.6064.60电风扇5875.181801.945.7018.00房间空调器3142.49861.8632.6042.10吸油烟机187.9746.3627.4064.90电饭锅1444.32294.2228.3021.10移动电话10210.072112.6850.2053.402004年1-5月全国主要家用电器产…     

2003年1-10月全国主要家用电器产品产量

产品名称累计10月比去年同期增长%累计10月彩色电视机5464.57766.1227.638.4录像机1484.40167.776.43.7收音机3928.54502.738.123.3组合音响3519.94521.920.75.2家用洗衣机1431.30230.1924.844.2吸尘器1581.35194.8239.121.4产品名称累计10月比去年同期增长%累计10月家用电冰箱1793.11147.3029.116.4冷冻箱468.8031.918.320.8电风扇9465.90380.417.1-3.1房间空调器4032.09364.1639.798.9吸油烟机305.5945.7716.616.4电饭锅2724.75428.4840.979.92003年1-10月全国主要家用电器产品产量$国家统计局…     

2003年1-7月全国主要家用电器产品产量

家电科技2003年第9期··产品名称累计7月%累计7月彩色电视机3413.66453.4122.917.1录像机1024.8316.36612.814.1收音机2467.79434.869.6-0.7组合音响2086.70337.941.9-9.0家用洗衣机874.9185.6719.413.4吸尘器1048.50141.8645.136.6产品名称累计7月比去年同期增长%累计7月家用电冰箱1251.52216.6320.620.5冷冻箱364.0632.102.716.2电风扇8137.24840.339.6-14.6房间空调器3159.51352.0530.7-1.3吸油烟机198.4831.1821.140.5电饭锅1703.03220.0332.51.7402003年1-7月全国主要家用电器产品产量$国家统计局…     

2004年1-3月全国主要家用电器产品产量

~~2004年1-3月全国主要家用电器产品产量$国家统计局     

Electromagnetic scattering from thin strips. I. Analytical solutions for wide and narrow strips

Electromagnetic scattering from thin resistive strips is formulated using an integral equation approach. Analytical expressions for the electric current density over wide and narrow strips are derived based on the physical optics and quasistatic approximation of the pertinent integral equations, respectively. The solutions are used to find closed form expressions for the echo width of the strip.     

2003年1-9月全国主要家用电器产品产量

产品名称累计9月比去年同期增长%累计9月彩色电视机4698.48705.5726.437.1录像机1316.63152.106.7-7.9收音机3425.54475.166.521.5组合音响2991.90492.79-0.2-0.5家用洗衣机1200.88199.6321.625.9吸尘器1386.53161.2942.015.2产品名称累计9月比去年同期增长%累计9月家用电冰箱1645.81188.0827.652.8冷冻箱436.9037.227.539.5电风扇9085.08426.287.6-25.4房间空调器3664.64245.6835.586.1吸油烟机259.8133.1917.12.8电饭锅2296.27343.9635.456.32003年1-9月全国主要家用电器产品产量$国家统计局…     

2003年1-8月全国主要家用电器产品产量

产品名称累计8月累计8月彩色电视机3960.21546.3622.822.4录像机1175.49150.6710.0-5.7收音机2950.22484.654.416.9组合音响2543.49453.591.7持平家用洗衣机1001.25126.3720.932.0吸尘器1225.27176.7646.555.4产品名称累计8月累计8月家用电冰箱1457.74205.8225.060.0冷冻箱399.5035.415.240.1电风扇8655.21516.979.914.3房间空调器3427.82268.3333.374.4吸油烟机226.6228.1419.59.0电饭锅1952.31249.2832.330.72003年1-8月全国主要家用电器产品产量$国家统计局…