Updated: 5/16/2006; 11:21:01 AM.

Ken Novak's Weblog
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daily link  Friday, December 12, 2003


World economic forum stats on telecomm:Interesting country comparisons, including "Countries Where the Number of Cellular Mobile Telephones Subscribers Exceeds the Number of Main Telephones Lines in Operation, as of 2002".  3:53:41 PM  permalink  

Thin chrystalline solar cells:  "In the laboratory of the Fraunhofer Institute for Solar Energy Systems ISE, thin crystalline solar cells have been produced with a thickness of 37 micrometres (µm) and an efficiency value of 20.2 %. In comparison, current industrial cells are comparatively thick - 300 µm (= 0.3 mm) - and significantly less efficient, with a value of 16 %.  A decisive step leading towards the successful result is a process which has been developed and patented by Fraunhofer ISE for back-surface contacting of the solar cell [with] LFC technology (laser fired contacts) .. 

The existing slow and expensive photolithographic processing steps for the back contact are no longer needed. In conventional, laboratory processes for highly efficient cells, considerable effort is needed to open small holes in the insulating layer, and then deposit the back-surface electrode of aluminium.  "In LFC processing, we evaporate the aluminium layer directly onto the passivation layer and then fire through the metal with a laser to create the local contacts", explained Stefan Glunz, the co-ordinator of work at the Institute on monocrystalline silicon solar cells. This process is inexpensive, requires only one second per solar cell, does not impose significant stress on the material, and functions for all wafer thicknesses and doping levels, making it ideal for industrial mass production."

  12:56:57 PM  permalink  

Hidden Cameras:Long, readible, well-researched article on how to find hidden cameras. Much real-world info.  11:37:11 AM  permalink  

No privacy in public?: "Even in a public place, we feel we have some privacy. But how much privacy do we actually have?"  Brief discussion of issues raised in TV airing of surveillance footage.  11:36:19 AM  permalink  

Pentagon diplomacy: "Even the White House was caught off guard by the timing of the announcement. The New York Times reported that President Bush and other White House officials were "fuming" as the announcement coincided with a campaign by President Bush to convince France, Germany and Russia to forgive Iraqi debts owed for past oil contracts, and to accept his new special representative responsible for restructuring Iraqi finances, former Secretary of State James Baker. Wolfowitz, in a memo posted to the Pentagon Web site hours before Bush's talks, said that, "It is necessary for the protection of the essential security interests of the United States to limit competition for the prime contracts of these procurements to companies from the United States, Iraq, coalition partners and force contributing nations," further angering countries that had provided other kinds of support. "What we did was toss away our leverage," a senior State Department official told the Times. "We could have put together a policy that said, "The more you help, the more contracts you may be able to gain." Instead, said the official, "we found a new way to alienate them." "  11:13:59 AM  permalink  

Internet Scout Project - SPT: "The Scout Portal Toolkit (SPT) allows groups or organizations that have a collection of knowledge or resources they want to share via the World Wide Web to put that collection online without making a big investment in technical resources or expertise... Although the default settings on a newly-installed Portal Toolkit will be optimized to allow a portal builder to set up a useful portal site with a minimum of effort, there will still be some aspects that the builder will need or want to configure themselves. To allow the non-technical builder to perform this task the Toolkit includes a web-based configuration tool that does not require any knowledge of HTML, Unix, or other behind-the-scenes technical details."  9:30:24 AM  permalink  

What Are Topic Maps? Interesting XML format for organizing web-based info. "The most common use for topic maps right now is to build web sites that are entirely driven by the topic map, in order to fully realize the their information-finding benefits. The topic map provides the site structure, and the page content is taken partly from the topic map itself, and partly from the occurrences. This solution is perfect for all sorts of portals, catalogs, site indexes, and so on." Several resources are listed, including a tool collection.  9:23:51 AM  permalink  

 

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Copyright 2006 © Ken Novak.
Last update: 5/16/2006; 11:21:01 AM.