Monday, December 22, 2014

how to shop for cell phone?

Here is how I shop for cellphone? 

1.  Pre-filter phones with good rating.
Go to websites like walmart : http://www.walmart.com/browse/cell-phones/unlocked-phones/1105910_1073085?sort=rating_high

and find the highest rating with around 100 reviewers. More reviewers, better. 
Now find a few that are in your budget.

2. Check cellphone specs and read customer reviews related to technical issues.
Check cellphone specifications at both sites:
site 1: http://www.gsmarena.com/blu_studio_5_0_c_hd-6565.php
site 2: http://www.phonearena.com/phones/BLU-Studio-5.0-C-HD_id8805
Note:
1) "read all opinions" at site 1. 
2) site 2 gives more visualized summary, which locates where your phone is in each category.

3. Make sure cellphone will work for intended wireless carrier
Go to http://www.bhphotovideo.com/ and locate the same phone.
http://www.bhphotovideo.com/c/product/1076548-REG/blu_d534u_blue_studio_5_0c_hd_d534u.html


And click the following links to make sure that cellphone you're choosing will work for the carrier you're going to use.

North American Carriers
South American Carriers
Worldwide Carriers





 





Sunday, December 14, 2014

El Nino and La Nina



El Niño is the warm phase of the El Niño Southern Oscillation (commonly called ENSO) and is associated with a band of warm ocean water that develops in the central and east-central equatorial Pacific (between approximately the International Date Line and 120°W), including off the Pacific coast of South America. El Niño Southern Oscillation refers to the cycle of warm and cold temperatures, as measured by sea surface temperature, SST, of the tropical central and eastern Pacific Ocean.

El Niño is accompanied by high air pressure in the western Pacific and low air pressure in the eastern Pacific.

The cool phase of ENSO is called "La Niña" with SST in the eastern Pacific below average and air pressures high in the eastern and low in western Pacific.

The ENSO cycle, both El Niño and La Niña, causes global changes of both temperatures and rainfall.[2][3] Mechanisms that cause the oscillation remain under study.

Developing countries dependent upon agriculture and fishing, particularly those bordering the Pacific Ocean, are the most affected.

In Spanish, the capitalized term "El Niño" refers to the Christ child, Jesus (literal translation "The (male) Child"). La Niña, chosen as the 'opposite' of El Niño, literally means "The (female) Child).

El Niño was so named because periodic warming in the Pacific near South America is often noticed around Christmas.[4]

Monday, December 1, 2014

Kill task in windows from command line

1. Bring out an command line terminal
cmd












2. Useful command about "tasklist"
tasklist /?
tasklist /fo list
tasklist /fo table
tasklist /fo csv
tasklist /fi "imagename eq firefox.exe" 

tasklist /F /fi "imagename eq firefox.exe"           ## force to kill task

3. Useful command man page about "taskkill"
taskkill /?






4. Examples 

4.1) Use filter to find the application you want to terminate. 
C:\Users\dxu>tasklist  /fi  "imagename eq firefox.exe"

Image Name                     PID Session Name        Session#    Mem Usage
========================= ======== ================ =========== ============
firefox.exe                   7804 Console                    1    135,052 K
4.2) Kill the application by PID
C:\Users\dxu>taskkill /pid 7804
SUCCESS: Sent termination signal to the process with PID 7804.

C:\Users\dxu>tasklist  /fi  "imagename eq firefox.exe"

Image Name                     PID Session Name        Session#    Mem Usage
========================= ======== ================ =========== ============
firefox.exe                  11584 Console                    1    115,612 K


4.3) Force to kill application "/f"
C:\Users\dxu>taskkill /f /im firefox                    ## Must specify full imagename.
ERROR: The process "firefox" not found.



C:\Users\dxu>taskkill /f /im firefox.exe
SUCCESS: The process "firefox.exe" with PID 11584 has been terminated.