You can restart anywhere or anytime. From any OS

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Tags: ui
+2
KlauS 9 january 2012, 12:47

The design management is a very interesting thing, it seems as if it is, but on the other hand, it is not. At the same time, there exists an unstable verge between reality and fiction, and many people make good money on that, including me.

Honestly, this text writing pursued the selfish goals: it is some touchstone to be sent to people with which we will have to collaborate.

After we dot the i's and cross the t's, we have to either rush headlong into the abyss of passion, or delimit our areas of activity completely. So, let us talk about the screwups and why they cannot be fixed.
+2
BumBum 6 january 2012, 16:00

Introduction


I have a Toyota Corolla 2003 with the factory built-in a car cassette radio. Of course, I have never used the cassettes, but a radio and fm modulator came in handy for me.
I am not particularly a music lover, but I wanted something more. Here are options what I had:
1. Put the frame for 1 or 2 din and install the ordinary cassette radio.
2. Buy its native one for $ 70 dollars on eBay with the CDs, but without the MP3 :)
3. Buy a fancy one for $ 600 dollars that would fit to my car.

However, I did not like any of the above…
1. An ordinary cassette radio did not have any computer.
2. Trade bad for worse :).
3. It is too expensive and not very popular ...

There came an idea to install the computer in the car. Here is what it was before and after.

imageimage
+2
Pirat 3 january 2012, 15:14

I have always been interested in a subject of electric transport. When I finally moved from theory to practice, the long-awaited moment came. I would like to share my experience below.

Here are a couple of thoughts as an introduction.
Why now is everybody talking about electric cars, electric airplanes and electric bikes so actively? Finally, the main problem of electric transport was almost resolved, because there began appearing the quite compact and high-capacity batteries. Moreover, they are being charged for the acceptable time. In fact, just this was waited, and all the rest as a car body, chassis, electronics and electric motors were created a long time ago. All of this has already being used for a hundred years. The electric motors allow using the new solutions; for example, to be installed in the hubs of wheels.

Let us get to the point!

Technical characteristics:

- ordinary bike, the price is about $ 200
- electric motor: 48V / 380W
- battery: 48V / 10A
- speed without pedaling on a flat road 35-40 km / h
- traveling distance: 22-25 km on the hilly country and the city
- total charging time: 2 hours

image
+2
Siera 30 december 2011, 20:34

I have recently read an article where its author states that the computer will never be able to understand the text as it is understood by the human. He cites a number of impossible tasks to machines as proof with an emphasis on the lack of efficient algorithms and modeling impossibility of a complete system, which would take into account all the possible alternatives of the text. However, is it really that bad? Is it true that for the solution of such tasks is needed special processing power? What is a situation of natural language text processing?

What does it mean to "understand"?


The first thing I was confused is the question itself. Could a computer be able ever to understand the text as it understood by the human? What exactly does it mean to "understand as the human"? Generally, what does it mean to "understand"? In the book “Data Mining: Practical Machine Learning Tools and Techniques” authors asked themselves a similar question. What does it mean to "get trained"? Let us assume that we have applied to the "interpreter" some training technique. How do we check whether or not a student is learning? If a student attended all the lectures on the subject, it does not mean that the student has learned and understood it. In order to test this, teachers hold examinations, where student is asked to complete some tests on the subject. Same thing is with the computer, we want to know whether it has learned (whether it has understood the text). In order to find out that we have to check, as it solves the specific applications, translates the text, highlights the facts, gives concrete meaning of a polysemantic word, etc. In this perspective, the meaning misses the importance at all. The meaning can be assumed as a certain state of the interpreter in accordance with which it handles text.
+2
BumBum 22 december 2011, 19:33

image

A few days ago, the USA announced the withdrawal of troops from Iraq. They did not leave empty-handed and took the biometric data of three million Iraqi civilians (it is approximately 10% of the population). For several years, U.S. Marines carried handheld portable optical scanners, which allow quickly collecting the irises and fingerprints from any passer-by in the field.
+2
xially 22 december 2011, 13:58

Improving performance of the disk subsystem is the most topical issue today. This is caused by the low cost of HDD that takes a leading position in the mass segment. More than a half of the resource-intensive applications have a "vulnerable spot" that are the spindle drives. In this case, everything does not depend on the bandwidth of SATA interface, but it depends on the physical capabilities of the mechanical components of the magnetic disk. The bandwidth of SATA-II and SATA-III interfaces makes 300MB/s and 600MB/s respectively, and the maximum performance that can provide a regular HDD does not exceed 150MB/s. Therefore, the transition to SATA-III-interface will be reasonable only for SSD, but it is not suitable for everyone.

In order to evaluate and to test the effectiveness of different types of disk subsystems were chosen following solutions:

1. OCZ RevoDrive X2 PCI-E SSD 100Gb

image

2. Plextor PX-128M2S SSD 128Gb

image
+2
KlauS 15 december 2011, 14:31

We tested several configurations of disk arrays that are suitable for use in servers.
image
We tested the following configurations:
    4 x 300GB SAS2 10K + RAID10 on a PCI-E 2.0 controller (Reference 4 x 300GB RAID10)
    PCI-E SSD 120GB MLC (Inexpensive PCI-E SSD 120GB)
    2 x SSD 120GB MLC + RAID0 on a PCI-E 2.0 controller with optimized firmware (Inexpensive 2 х SSD 120GB RAID0)
    4 x 300GB SAS2 10K + RAID10 on a PCI-E 2.0 controller + SSD MLC 120GB caching I/O (Hybrid 4 x 300GB RAID10 + SSD caching)

+3
Spy 9 december 2011, 5:34

Here are the results of user poll on the SSD reliability that could be useful.

Let us begin with the size statistics.

image

The picture shows that the most popular formats are 120, 80 and 60, which are released only by Intel.
It is also noticed that the drives with capacity of 120 / 128 are particularly popular among users of alternative operating systems (including OS X).
+5
Pirat 7 december 2011, 13:15

Apple company has changed the behavior of the MacBooks in the clamshell closed with an external display in Mac OS X Lion, it was a special modification, which can be judged by the documentation: support.apple.com/kb/ht3131

This change completely canceled the ability to set the sleeping mode in the MacBook by closing its clamshell, if an external display is connected. They left no choice for the user.

Recently, on the forums of Apple has appeared the solution that returns the behavior as in Snow Leopard.

We should do the following in a terminal:

sudo nvram boot-args="iog=0x0"
Tags: lion, macbook
+2
xially 6 december 2011, 12:07
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