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Archive for November 2010

智能电网带动电子信息产业–控制工程网

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智能电网带动电子信息产业–控制工程网

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Written by laurence yuyi

November 24, 2010 at 4:53 pm

Posted in Technology

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陈志武:国企需要一场哲学反思

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南方周末 – 陈志武:国企需要一场哲学反思

陈志武:国企需要一场哲学反思

Written by laurence yuyi

November 23, 2010 at 11:55 am

Posted in Economy

创新中国论坛综述:创新人才培养,箭在弦上,路在何方

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科学网—创新中国论坛综述:创新人才培养,箭在弦上,路在何方

创新中国论坛综述:创新人才培养,箭在弦上,路在何方

Written by laurence yuyi

November 23, 2010 at 9:54 am

Posted in Education

The Mobile Panel 277F IWLAN commisioning

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1. WLAN — With SINEMA E (SIMATIC Network Manager Engineering), SIEMENS offers you
Windows software for planning, simulating and configuring a WLAN.

2. Safety Requirements evaluation — Safety Evaluation Tool

3. Zones (Zone ID) are used for location-dependent control of a plant area

4. An effective range (Effective range ID) is the range in which you perform fail-safe operation of plant parts, e.g. a machine, using the enabling buttons of the mobile panel.

  • Safe operation of the plant part separated by the effective range is possible only after successful logon. 
  • Effective ranges and zones can be configured independently of one another. 

5. If no definition of Zones and Effective Ranges

  • safe operation of plant parts using the mobile panel or automatic screen call are not possible in plants without effective ranges and zones. 
  • the emergency stop button is always active when the mobile panel is integrated in the PROFIsafe communication. 

6. Battery — The battery must always be sufficiently charged. When the battery is empty, a communication error occurs. The F-CPU initiates a “shutdown”.

7. Radio Link — If the radio link quality is too poor, a “global rampdown” is initiated.

8. Range Logon

  • If the F-CPU detects a communication error for a mobile panel that is logged on to the effective range, it initiates an immediate stop of the machines associated with the effective range. 
  • When an operator has logged on to an effective range and leaves this range for more than 25 s without logging off, a “local rampdown” is triggered. 

9. Illuminated sign — When a mobile panel is logged on to an effective range, then this must be indicated via an external indicator, for example a lamp.

10. Effective range quality

  • The “Effective range quality” object indicates how well the Mobile Panel 277F IWLAN is still located in an effective range.
  • The mobile panel calculates the effective range quality from the distance to the assigned transponders

11. Safety Function blocks — For detailed information, select the block in the STEP 7 Editor and press the “F1” key.

12. Integrated into or removed from safety program (F_program) with Mobile HMI

  • Transponder setting
  • Access Point Network setting (SCALANCE W788), SIMATIC Manager
  • F-CPU, Mobile Panel etc. setting, STEP 7–HW Config and Programing
    1. »»»»Add function blocks for 277F Mobile Panel, incl. standard and safety.
    2. »»»»Create F-Runtime group to be called from standard program
    3. »»»»Configure F-program and download
  • Mobile Panel setting (277F IWLAN), Windows CE, WinCC Flexible

13. For a application example, additional devices are needed, incl. ET200S and SCALANCE x208

  • WinCC Flexible is used to create HMI screen

14. Commissioning

  • F-CPU or F-I/O configuration, <S7 Distributed Safety – configuring and programming>
  • Safe program, <S7 Distributed Safety – configuring and programming>
  • Zone acceptance test, WinCC Flexible

15. Application

  • Switch on/off panel
  • Log on/off zones
  • Operate screens
  • Integrate Panel into WLAN with ProfiNet

Written by laurence yuyi

November 11, 2010 at 8:51 pm

Posted in Technology

Siemens Integrated Safety Overview

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From 《Safety Integrated》

Relevant Safety Standards:
Functional safety — functional safety in accordance with EN 62061 or EN ISO 13849-1

  • EN 62061: 2005 – as European sector standard of the basic standard IEC 61508.
  • EN ISO 13849-1: 2006 – as revised successor standard to the EN 954-1

Risk-reducing design principles and risk assessment of the machine — EN ISO 12100-1, EN 1050
Electrical safety — EN 60204-1

The ProfiSafe specifies the safe communication in accordance with:

Written by laurence yuyi

November 9, 2010 at 3:51 pm

Posted in Technology

科学网—科技部回应施一公饶毅《科学》社论

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科学网—科技部回应施一公饶毅《科学》社论

科技部回应施一公饶毅《科学》社论
认为文中所涉我国基础研究科研经费分配问题与事实不符

施一公饶毅联合为《科学》杂志撰写社论
讨论目前中国的科研基金分配体制及科研文化问题
  饶毅,施一公
编者按:施一公是清华大学生命科学学院教授、院长,饶 毅是北京大学生命科学学院教授、院长。近日,两位科学家联合撰文,讨论目前中国的科研基金分配体制及科研文化问题。他们在文章中指出,尽管近年来中国研究 经费持续以20%的比例增长,但这种增长没有对中国的科学和研究起到应有的强大的促进作用,现行的科研基金分配体制甚至在某种程度上阻碍了中国创新能力的 发展。他们认为,目前正是中国打破研究基金管理中各种潜规则、建立健康研究文化的时机,一个简单但重要的起点是所有新的研究基金必须基于学术优劣分配,而 不再依赖私人关系。
 

Written by laurence yuyi

November 9, 2010 at 8:53 am

Posted in Education

【转载】英语写作中100个使用频率较高的词语搭配 – 外语 – 小木虫 – 学术 科研 第一站

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【转载】英语写作中100个使用频率较高的词语搭配 – 外语 – 小木虫 – 学术 科研 第一站

英语写作中100个使用频率较高的词语搭配
1.随着经济的快速发展with the rapid development of economy
2.人民生活水平的显著提高/ 稳步增长  the remarkable improvement/ steady growth of people’s living standard
3.先进的科学技术 advanced science and technology
  4.面临新的机遇和挑战 be faced with new opportunities and challenges
  5.人们普遍认为 It is commonly believed/ recognized that…
  6.社会发展的必然结果 the inevitable result of social development
  7.引起了广泛的公众关注 arouse wide public concern/ draw public attention
  8.不可否认 It is undeniable that…/ There is no denying that…
  9.热烈的讨论/ 争论 a heated discussion/ debate
  10. 有争议性的问题 a controversial issue
  11.完全不同的观点 a totally different argument
  12.一些人 …而另外一些人 … Some people… while others…
  13. 就我而言/ 就个人而言 As far as I am concerned, / Personally,
  14.就…达到绝对的一致 reach an absolute consensus on…
  15.有充分的理由支持 be supported by sound reasons
  16.双方的论点 argument on both sides
  17.发挥着日益重要的作用 play an increasingly important role in…
  18.对…必不可少 be indispensable to …
  19.正如谚语所说 As the proverb goes:
  20.…也不例外 …be no exception
  21.对…产生有利/不利的影响 exert positive/ negative effects on…
  22.利远远大于弊 the advantages far outweigh the disadvantages.
  23.导致,引起 lead to/ give rise to/ contribute to/ result in
  24.复杂的社会现象 a complicated social phenomenon
  25.责任感 / 成就感 sense of responsibility/ sense of achievement
26. 竞争与合作精神 sense of competition and cooperation
  27. 开阔眼界 widen one’s horizon/ broaden one’s vision
  28.学习知识和技能 acquire knowledge and skills
  29.经济/心理负担 financial burden / psychological burden
  30.考虑到诸多因素 take many factors into account/ consideration
  31. 从另一个角度 from another perspective
  32.做出共同努力 make joint efforts
  33. 对…有益 be beneficial / conducive to…
  34.为社会做贡献 make contributions to the society
  35.打下坚实的基础 lay a solid foundation for…
  36.综合素质 comprehensive quality
  37.无可非议 blameless / beyond reproach
  39.致力于/ 投身于 be committed / devoted to…
  40. 应当承认 Admittedly,
  41.不可推卸的义务 unshakable duty
  42. 满足需求 satisfy/ meet the needs of…
  43.可靠的信息源 a reliable source of information
  44.宝贵的自然资源 valuable natural resources
  45.因特网 the Internet (一定要由冠词,字母I 大写)
  46.方便快捷 convenient and efficient
  47.在人类生活的方方面面 in all aspects of human life
  48.环保(的) environmental protection / environmentally friendly
  49.社会进步的体现 a symbol of society progress
  50.科技的飞速更新 the ever-accelerated updating of science and technology
51.对这一问题持有不同态度 hold different attitudes towards this issue
  52.支持前/后种观点的人 people / those in fovor of the former/ latteropinion
  53.有/ 提供如下理由/ 证据 have/ provide the following reasons/ evidence
  54.在一定程度上 to some extent/ degree / in some way
  55. 理论和实践相结合 integrate theory with practice
  56. …必然趋势 an irresistible trend of…
  57.日益激烈的社会竞争 the increasingly fierce social competition
  58.眼前利益 immediate interest/ short-term interest
  59.长远利益. interest in the long run
  60.…有其自身的优缺点 … has its merits and demerits/ advantages and disadvantages
  61.扬长避短 Exploit to the full one’s favorable conditions and avoid unfavorable ones
  62.取其精髓,取其糟粕 Take the essence and discard the dregs.
  63.对…有害 do harm to / be harmful to/ be detrimental to
  64.交流思想/ 情感/ 信息 exchange ideas/ emotions/ information
  65.跟上…的最新发展 keep pace with / catch up with/ keep abreast with
  the latest development of …
  66.采取有效措施来… take effective measures to do sth.
  67.…的健康发展 the healthy development of …
  68.有利有弊 Every coin has its two sides.
  No garden without weeds.
  69.对…观点因人而异 Views on …vary from person to person.
  70.重视 attach great importance to…
  71.社会地位 social status
  72.把时间和精力放在…上 focus time and energy on…
  73.扩大知识面 expand one’s scope of knowledge
  74.身心两方面 both physically and mentally
  75.有直接/间接关系 be directly / indirectly related to…
76. 提出折中提议 set forth a compromise proposal
77. 可以取代 “think”的词 believe, claim, maintain, argue, insist, hold the opinion/ belief that
  78.缓解压力/ 减轻负担 relieve stress/ burden
  79.优先考虑/发展… give (top) priority to sth.
  80.与…比较 compared with…/ in comparison with
  81. 相反 in contrast / on the contrary.
  82.代替 replace/ substitute / take the place of
  83.经不起推敲 cannot bear closer analysis / cannot hold water
  84.提供就业机会 offer job opportunities
  85. 社会进步的反映 mirror of social progress
  86.毫无疑问 Undoubtedly, / There is no doubt that…
  87.增进相互了解 enhance/ promote mutual understanding
  88.充分利用 make full use of / take advantage of
  89.承受更大的工作压力 suffer from heavier work pressure
  90.保障社会的稳定和繁荣 guarantee the stability and prosperity of our society
  91.更多地强调 put more emphasis on…
  92.适应社会发展 adapt oneself to the development of society
  93.实现梦想 realize one’s dream/ make one’s dream come true
  94. 主要理由列举如下 The main reasons are listed as follows:
  95. 首先 First, Firstly, In the first place, To begin with
  96.其次 Second, Secondly, In the second place
  97. 再次 Besides,In addition, Additionally, Moreover, Furthermore
  98. 最后 Finally, Last but not the least, Above all, Lastly,
  99. 总而言之 All in all, To sum up, In summary, In a word,
  100.我们还有很长的路要走 We still have a long way to go.

Written by laurence yuyi

November 5, 2010 at 12:17 pm

Posted in Education