JOGG's

[Q]remove files from github repository [A]  >git rm FILENAME  >git commit -m "REMOVE COMMENT"  >git push [R] stackoverflow

Three criteria for effective interface: (J.K. Salisbury)  a. free space must feel free  b. solid object must feel sniff  c. virtual constraint must not be easily saturated These descriptions above can be illustrated by five indicators which are mainly considered for designing a general haptic device:   1. DOF (degree of freedom)   2. workspace      a comfortable  angular workspace was estimated to be of the order of 90 degrees of pitch, and yaw combined with a roll of 120 degrees.   3. resolution      average position just-noticable-difference (JND) for wrist and elbow are both 2 degrees.   4. maximum output force   5. back-drivability       transparency: how realistic the feeling of touch is when user is touching the virtual object via haptic device.        => improving the transparency of haptic interaction is a goal.        ...

Latest Release   Python-libvirt-0.10.2, 2012/09/24 Terminology (1) node - a single physical machine (2) hypervisor - a layer of software which allow to virtualize a node into a set of virtual machines ex. Xem, KVM, Virtualbox, VMware, Qemu, OpenVZ, etc. (3) domain - an instance of an OS running on a virtual machine provided by hypervisor Goal   to provide a layer sufficient to manage domains on a node, possibly remote API for domain management   provision, create, modify, monitor, control, migrate and stop Issue   ex. internet setup, firewall rule, storage management  

The fight is on for wireless device-to-device networking supremacy b/w a refreshed incumbent BT4.0 and a newcomer Wi-Fi Direct. Both specifications are promising to make it easier for users to quickly transfer data b/w two wireless devices such as smartphone and laptop without the need for a WIFI network or USB cable. WiFi Direct v.s. BT 4.0 Organization :     Wi-Fi Alliance / Bluetooth SIG(Special Interest Group) Speed :     up to 250Mbps / up to 3Mbps Distance:     Wi-Fi Direct: 656 feet, more than two football fields     BT 4.0: less than 200 feet, but dependent on capacity of BT device rather than specification Security:     Wi-Fi Direct: WPA2 (AES 256-bit)     BT 4.0: AES 128-bit Power-saving:    Both claim their specifications will use low-energy technology for battery-powered device Backward compatibility:     Wi-Fi Direct: compatible with all legacy Wi-Fi devices   ...

[China] Wage increases are threatening China's competitiveness, but improved productivity and other advantages mean it will continue to attract investors, analyst said. China will no longer be a competitive place for production, given the strong rise in the cost of production, the bank said. BCG(Boston Consulting Group) said US technology giant NCR has moved its manufacturing of ATMs to a factory in Columbus, Georgia, that will employ 870 workers as of  2014 - an example of major manufacturers leaving China. Adidas announced recently that it would close its only directly owned factory in China, becoming the latest major brand to move its manufacturing to cheaper countries, though it maintains a network of 300 Chinese contractors. However, not all economists believe China will lost its manufacturing edge, due partly to improvements in productivity. "Most of the increase in wage have been offset by strong productivity growth", said Mr. Louis Kuijs, project direct...

[Japan]     Nine japan private companies are now working on the smart city plan which will build solar systems and battery storage technology inside all houses and town facilities on Tokyo outskirts.     The plan "Fujisawa Sustainable Smart Town", or "Fujisawa SST", organized by Japanese electronics giant Panasonic cooperation, for example, unveiled last May and catered for 1,000 households or a population of 3,000, and is based on a collection of sustainability solutions, such as energy-saving technology, solar power systems, and Ene-Farm fuel cells (a household fuel cell jointly developed by Panasonic and Tokyo gas. This fuel cell is powered by oxygen from the atmosphere combined with hydrogen from a small amount of natural gas and product heat.), called Eco-idea.    Japan has experienced multiple energy crises, in addition to physical damage to its infrastructure, as a result of the disasters. An aftershock last April also halted 5 of the region's fue...

One thing passed away does mean one new come along. Keep recording daily trivial stuffs, and always look on the bright side of life. Thanks, God.