Fred Palma | Computer Scientist

http://www.fs-driver.org

It provides Windows NT4.0/2000/XP/2003/Vista with full access to Linux Ext2 volumes (read access and write access). This may be useful if you have installed both Windows and Linux as a dual boot environment on your computer.

The “Ext2 Installable File System for Windows” software is freeware.

If you currently have Windows running and you realize that you need some files for your work which you have stored on an Ext2 volume of your Linux installation, you no longer have to shut down Windows and boot Linux!

Furthermore, Windows will now be able to handle floppy disks which have been formatted with an Ext2 file system.

Linux Ext3 volumes can also be accessed. To do that, please read the FAQ section.

Download

Tags: Operational System by Fred
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http://www.silobreaker.com

Silobreaker is an online search service for news and current events that delivers meaning and relevance beyond traditional search and aggregation engines. Its relational analysis and explanatory graphics provide users with unparalleled contextual insight into the news stories of the day.

More than a news aggregator, Silobreaker provides relevance by looking at the data it finds like a person does. It recognises people, companies, topics, places and keywords; understands how they relate to each other in the news flow, and puts them in context for the user. The graphical search results enables users to quickly and easily understand connections, trends and topics or navigate deeper into the most relevant stories for them. No other news search service provides such an extensive suite of contextual tools in the industry today.

Silobreaker pulls content on global issues, science, technology and business from approximately 10,000 news, blog, research and multimedia sources. With the engine’s focus on finding and connecting related data in the information flow, Silobreaker’s user tools and visualisations are ideal for bringing meaning to content from either today’s Web or the evolving Semantic Web, or both.

Who should use Silobreaker?

Silobreaker should be used by anyone who wants to get more from current affairs on the internet in less time. If you want to get an in-depth understanding of the news, whether it’s for your own interest or as part of your job, Silobreaker provides you with the information you need to know.

To keep up with the latest developments, subscribe to our blog at http://silobreaker.blogspot.com.

Tags: search by Fred
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Edit your postgres.conf and add or change this:

stats_start_collector = true (true for the statistics collector)

stats_command_string = true (It enables monitoring of the current command being executed by any server process.The statistics collector subprocess need not be running to enable this feature.)

Restart postgres:

/etc/init.d/postgresql restart

the following query will show currently running queries:

psql -U postgres template1 -c “select * from pg_stat_activity” (only as user “postgres”)

Or in pgadmin:

select * from pg_stat_activity

Tags: Database by Fred
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http://jakarta.apache.org/jmeter/
Apache JMeter is a 100% pure Java desktop application designed to load test functional behavior and measure performance. It was originally designed for testing Web Applications but has since expanded to other test functions.

What can I do with it?

Apache JMeter may be used to test performance both on static and dynamic resources (files, Servlets, Perl scripts, Java Objects, Data Bases and Queries, FTP Servers and more). It can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types. You can use it to make a graphical analysis of performance or to test your server/script/object behavior under heavy concurrent load.
What does it do?

Apache JMeter features include:

* Can load and performance test many different server types:
o Web – HTTP, HTTPS
o SOAP
o Database via JDBC
o LDAP
o JMS
o Mail – POP3
* Complete portability and 100% Java purity .
* Full Swing and lightweight component support (precompiled JAR uses packages javax.swing.* ).
* Full multithreading framework allows concurrent sampling by many threads and simultaneous sampling of different functions by seperate thread groups.
* Careful GUI design allows faster operation and more precise timings.
* Caching and offline analysis/replaying of test results.
* Highly Extensible:
o Pluggable Samplers allow unlimited testing capabilities.
o Several load statistics may be choosen with pluggable timers .
o Data analysis and visualization plugins allow great extendibility as well as personalization.
o Functions can be used to provide dynamic input to a test or provide data manipulation.
o Scriptable Samplers (BeanShell is fully supported; and there is a sampler which supports BSF-compatible languages)

Tags: Uncategorized by Fred
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Tested in postgres:

Printing sql update script:

select ‘update dados.tb_geo_municipios set cras_qtde=’||cras_qtde||’ where codigo=’||codigo||’;’
from dados.tb_prog_mi_mes_mu
where mes_ano = ‘2007-10-01′

select SUBSTR(codigo,1,2),sum(cras_qtde) from dados.tb_prog_mi_mes_mu
where cras_qtde>0 group by SUBSTR(codigo,1,2)

select ‘update dados.tb_geo_estado set cras_qtde=’||sum(cras_qtde)||’
where codigo=’||substr(codigo,1,2)||’;’
from dados.tb_prog_mi_mes_mu where cras_qtde>0
group by substr(codigo,1,2);

Updating from select:

update dados.tb_prog_mi_ano_estado
set pop=a.popu
from (
select substring(codigo,1,2) as cod,sum(pop) as popu from dados.tb_prog_mi_ano_mu where mes_ano=’2007-01-01′
group by substring(codigo,1,2)) a
where codigo=a.cod and mes_ano=’2007-01-01′

Tags: Database, sql by Fred
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Aurora (complete video without commentary) from Adaptive Path on Vimeo.

Tags: Browser by Fred
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Personal Firewall (Portuguese version), Anti-Malware, Website verification, Antivirus, Email security certificate all of them from Comodo family.

Vista Firewall Control from Sphinx.

Cleaning your traces using CCleaner from piriform or Free Internet Window Washer from eusing.

Kill Rootkits or malwares using F-Secure Blacklight Rootkit Eliminator from F-Secure either HijackThis or RunScanner.

Privacy software, try Spybot.

Antivirus: avast, AVG, Clamavwin, Avira, bitdefender, Rising Free, PC Tool Free Antivirus, Microsoft Security Essentials

PC Repair: Advanced System Care

Firewall: PC Tools Firewall Plus Free Edition , ZoneAlarm Basic Firewall , Tiny Personal Firewall

Tags: Softwares, Tools, security by Fred
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www.videolectures.net

“The main purpose of the project Videolectures.Net is to provide free and open access of a high quality video lectures presented by distinguished scholars and scientists at the most important and prominent events like conferences, summer schools, workshops and science promotional events from many fields of Science. The portal is aimed at promoting science, exchanging ideas and fostering knowledge sharing by providing high quality didactic contents not only to a scientific community but also to a general public. All lectures, accompanying documents, information and links are systematically selected and classified through the editorial process taking into account also users’ comments.”

Computer Science => http://videolectures.net/Top/Computer_Science/

Tags: Education by Fred
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