28. ledna 2011

2000 iMac vs 2010 iPhone

2000 iMac compared to the 2010 iPhone

2000 iMac vs 2010 iPhone

2000
iMac
Operating System - Mac OS 9.0.4
Processor - 500 MHz PowerPC G3 CPU, 128MB Memory
Graphics - ATI Rage 128 Pro, 8MB of memory (8 million triangles)
Screen - 786K pixels
Data Transfer Speeds - 1.3-12.5 MB/s (DVD-ROM-1/100 Ethernet)
Storage - 30GB Hard Drive
Dimensions - 15.0 x 15.0 x 17.1 inches
Weight - 34.7 pounds


2010
iPhone 4
Operating System - iOS 4.0
Processor - 1 Ghz ARM A4 CPU, 512MB Memory
Graphics - PowerVR SGX 535, uses system memory (28 million triangles)
Screen - 614K pixels
Data Transfer Speeds - .04-20MB/s (3G-WiFi)
Storage - 32GB Flash Drive
Dimensions - 4.5 x 2.31 x .31 inches
Weight - 4.8 ounces



What will the device be like in 2020?

source

Mýtus o zelené energetické bezpečnosti - Bjørn Lomborg

Europe needs real vision on climate 20/20/20



2000 Vs. 2010: How the world has changed
It's hard to believe how much the world has transformed in the past decade — but our handy infographic tells the whole story





2000
Microsoft releases Windows ME June 19, 2000
Microsoft introduces C# to the public in June 2000
For the first time more than half of the households in America have Internet access on August 17, 2000 according to Nielsen
The site egghead.com announces December 22, 2000 its site was hacked and that around 3.5 million customers credit cards were exposed

2001
January 02, 2001 - Intel announced that it will recall its 1.13 GHz Pentium III processors due to a glitch. Users with these processors should contact their vendors for additional information about the recall
Linus Torvalds releases version 2.4 of the Linux Kernel source code on January 4th.
The domain wikipedia.org comes online January 13, 2001.
Wikipedia is founded on January 15, 2001.
Google acquires Deaj.com's Usenet Service February 13, 2001, which later becomes Google groups.
UsRobotics introduces the V.92 modem standard February 27, 2001.
Napster reaches over 26 million users February 2001.

.

2000 iMac vs 2010 iPhone

2000 iMac compared to the 2010 iPhone

2000 iMac vs 2010 iPhone

2000
iMac
Operating System - Mac OS 9.0.4
Processor - 500 MHz PowerPC G3 CPU, 128MB Memory
Graphics - ATI Rage 128 Pro, 8MB of memory (8 million triangles)
Screen - 786K pixels
Data Transfer Speeds - 1.3-12.5 MB/s (DVD-ROM-1/100 Ethernet)
Storage - 30GB Hard Drive
Dimensions - 15.0 x 15.0 x 17.1 inches
Weight - 34.7 pounds


2010
iPhone 4
Operating System - iOS 4.0
Processor - 1 Ghz ARM A4 CPU, 512MB Memory
Graphics - PowerVR SGX 535, uses system memory (28 million triangles)
Screen - 614K pixels
Data Transfer Speeds - .04-20MB/s (3G-WiFi)
Storage - 32GB Flash Drive
Dimensions - 4.5 x 2.31 x .31 inches
Weight - 4.8 ounces



What will the device be like in 2020?

source



2000 Vs. 2010: How the world has changed
It's hard to believe how much the world has transformed in the past decade — but our handy infographic tells the whole story






.

26. ledna 2011

How to SetUP Windows

How to SetUP Windows

Windows Operating System

Clean Install of Windows

Windows XP Operating System

How to Install Windows 7 and XP on the Same Computer
Read more: Windows Installation - How To Information | eHow.com

How to Repartition in Ubuntu & Install XP on the Partition
Read more: Windows Installation - How To Information | eHow.com


Bootable Windows XP Installation


Welcome to HowToNetworking.com, a FREE resource that provides a step by step guide to setup Network, VPN, Remote Access and Internet Sharing.


how to setup windows vista





VMware Player
VMware Player is the easiest way to run multiple operating systems at the same time on your PC. With its user-friendly interface, VMware Player makes it effortless for anyone to try out Windows 7, Chrome OS or the latest Linux releases, or create isolated virtual machines to safely test new software and surf the Web. VMware Player can also be used to run a virtual copy of an old PC so that you can recycle the old machines you have under your desk or stored in the closet...
more

Make Windows XP Run Faster

Make Windows XP Run Faster!


Installing Windows 2000 and Windows XP on old computers
Making Windows 2000 run (rather well) on only 32MB RAM

Make Windows XP Blazingly Fast

≈ Overview and General Ideas
≈ Part 1: Increase and Free Memory/RAM
≈ Part 2: Optimize Hard Drive and Data
≈ Part 3: Finishing the Optimization Process
≈ Software Recommendations


TweakHound's Super XP Tweaking Guide - SP3 Final
A guide to Tweak & Optimize XP.
Section & Title


Format Windows XP

This explains step-by-step how to format hard drive partition using the Windows XP installation CD.

Before you continue, make sure you have backup of all documents you may need that are saved in C:, My Documents folder or your desktop.



Boost Windows Xp Performance Fast - 3 Easy Steps to Make Your PC Run Like New

It's very frustrating but as time goes by windows Xp actually works slower and slower


Make Windows XP Run Faster!

INGREDIENTS:

1 tbsp Windows Updates
2 cups Virus/Malware remover
3 lbs Software Cleanup powder
2 tbsp Hard Disk Scrubber
1 slice Defrag
1 tsp Startup Weeder
1/2 cup Registry Shavings
2 cups Virtual Memory Sanitizer
1 Extraneous Services Remover



7 Tips to Keep Windows XP Fast and Responsive



Installing Windows 2000 and Windows XP on old computers
Making Windows 2000 run (rather well) on only 32MB RAM

By Daniel Iversen,
16 July
2005
There are times when it can and should (sometimes) be done…
installing Windows 2000 on very old computers with only 32 megabytes
(MB) of memory (RAM). I’ve seen 64 and 96 MB RAM computers struggling
with Windows 2000 but if you configure the system correctly it can run
fast and well. Note though that there is no “magic bullet”. Although
your old computer can run faster it will never compete with modern
hardware in terms of performance.
 
This is a short guide to show you how to run Windows 2000 on such old
computers and maintain a fast (as possible) performing system.
The computer I installed Windows 2000 on was a Toshiba Libretto 110
sub-notebook with 233 Mhz and 32 MB RAM.

Why would you do that?I had an old but very leight-weight small subnotebook that I
needed for after hours support for one of my clients… I needed to
install Windows 2000 to use my mobile phone (LG U8110/U8120) as an
infrared modem to access the
high speed 3G data network. Your reason might be that you have an old
PC you don’t want to throw away and Windows 95/98/Me might not give you
the features you are looking for… be aware though that if Windows 98
meets your needs it is stupid to upgrade because you have lots less
memory to work with when installing Windows 2000.
FACTS
 
 Before the tweaks in this document

Windows 2000 would startup/boot in
30 seconds and you would have between 3-4 MB RAM left for your
applications. The system responsiveness is sluggish.
 AFTER the tweaks in this document

 Windows 2000 would startup/boot in 10 seconds
(using hibernation) – which is faster than my 2.4Ghz/400MB laptop ..
and you would have more than 10 MB RAM left for
your
applications. The system responsiveness is rather fast.


(for picture look at origin page) this page is only backup

Figure 1: The performance of my
old subnotebook after tweaks

THE GUIDE

Install the plain Windows 2000 operating system oin the computer.

Keep in mind:
  • DONT install an
    extra service pack (they can offer perfromance and reliability
    improvements on faster computers but on old computers with few tasks
    they are just a bloat). Make sure your Windows installation CD isn’t
    already “slipstreamed” with a service pack.
  • Don’t install multiple languages (i.e. no multiple keyboard
    layouts) as it takes up precious resources… just stick with U.S.
    layout.
  • DON’T upgrade
    from another version of windows. Lots of stuff will be left hanging
    over and the performance will suffer
  • Keep (or choose) the (very fast for old computers) FAT file
    system during installation as opposed to the heavier and more secure
    NTFS filesystem

Removed cursor shadow

I know… maybe not the biggest resource saver (especially because the
graphics card probablky handles this one.

Disable display effects incl color icons

You can run with 16bit color on the desktop (if that is what you
graphics card supports best natively. Be aware though that some
computers can run with higher color depth but the copmuter
processor/CPU (as opposed to the graphics CPU) may have to do more…
but usually 16bit is fine.
Then you disbale high-color icons, you disable fading effects, smooth
fonts and “show window contents” when dragging – in other words,
disable anything fancy ;)

removed sound theme and sound card

Playing sound takes CPU resources and getting sound files takes
memory.. disable sound effects, and even disable the sound card… When
you run on 32MB there are sacrifices that have to be made… I use my
32MB subnotebook for non-sound things so disabling sound card makes
sense because the drivers take up resources.

Disabled (by setting them to “manual” (in case windows needs them))
unneeded services

This is probably the single-most important step after the installation.
Windows loads lots of services you might not need and they take up LOTS
of memory and CPU (considering we only have 32MB).
Disabling following services in the “Control Panel -> Administration
-> Services” makes your computer able to act on the network,
internet and other things while freeing up lots of memory;
  • Remote Registry Service
  • Task Scheduler
  • RunAs Service
  • TCP/IP NetBios Helper Service
  • Print Spooler
  • Event Log
  • Computer Browser
  • IPSEC Policy Agent
  • Messenger
  • Distributed Link Tracking Client
  • System Event Notification
  • Alerter
  • Protected Storage
  • Server
You can also remove these services
  • Infrared Monitor
  • Removable Storage (for USB drives, attachable CD drives etc.)I use the 2 services above but have them disabled. I just created 2
    shortcuts on the desktop to start them… the command to start a
    service is net start “”<="" service="" span="">

Install and use X-Setup from
X-teq

This is probably the second most important step after installing
windows and disabling the services…. This little tool can remove lots
of hidden (and for you unneeded) applications and settings embedded
deep inside windows.
Following changes has to be made using the X-Setup tool (trial version
will do)
  • disabke activedesktop
  • use “Classic” Explorer style(as opposed to only turn off the obvious win2k UI niceties this
    actually reduces the win2k memory footprint further by also removing
    quick launch, right-click on start menu and other features)
  • disallow file and printer sharing
  • Shutdown can auto-end programs
  • Service timout when system shutdown decreasde to 10sec
  • Disable group policy objects (GPO)
  • Disable dr. watson just-in-time debugging
  • Disable “last access” attribute of files (this is important for
    drive/processor speed)
  • disable “secure desktop” patch
  • Disable windows file protection (this is VERY important for speed)

Remove LPT/printer port

Chances are that you won’t have a printer connected to the computer..
Removing the LPT port (in the control panel -> system -> device
manager ) is a good idea … you can still print over the network,
albeit a bit slower (since we disabled the print spooler earlier)..
thats o.k.
- it is all for the greater good.

Disable printer and file sharing

again – its about cutting down on whats running.. do this and connect
to other computers instead of letting them connect to you.

Other registry tweaks found on the net;


  ”HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Explorer”, create a DWORD key “AlwaysUnloadDLL” and set it to 1. Without doing this, your Libretto will use more and more memory even after you close all the open applications. Very cool tweak.“HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\PriorityControl”, create a DWORD key “IRQ8Priority” and set it to 1. This way CMOS access and overall system performance is improved.
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\SessionManager\MemoryManagement”, set IoPageLockLimit to 1000 (hex) for 64MB. Set it to 4000 for 128MB, 10000 for 256MB or 40000 for 512MB or larger.
  ”

Install and use Tweak
UI

Tweak UI is an old but good fere application from Microsoft to tweak
certain windows saettings.
Install it and use it as follows;
  • remove all UI effects of windows
  • remove active desktop
  • remove “new documents added to documents on startmenu”
  • renmove “beep on error”
  • reomove most of the icons from the “new” tab
   

Use hibernation feature


Hibernation allows you to start your computer very fast. A typical boot
process can take 40 seconds.. .resuming from hibernation only takes
10-15
seconds – very much worth doing! (just remember to do a real
reboot/restart every few days to make sure everything gets “cleaned up”)

Install network card

Install the network card in your computer… let windows detecdt the
card and use the “browse” button to find the driver on your
CD/floppy/folder… do NOT run the installation program that came with
your netwoirk card as that will most likely install some resident
helper application (that you don’t really need)

How to use the computer on a daily basis

  • Don’t install a lot of applications
  • Only have 1 application open at a time if possible
  • Don’t work with big (1MB+) files (documents, images etc)
  • Don’t apply O/S patches for security stability or other things.
  • Don’t envy people who has newer software than yours (Windows XP,
    Office 2003, etc) or desktop
    wallpapers for that matter ;) it’s not going to happen on your computer!
  • Defragment your drive regulary

What now?

Next thing is to install office or whatever.. Office 2000 can run on
this computer… make sure though you don’t run a “pure/normal” install
but just copy the files over from anbother installation… this limits
bloat and drivers decreasing overall performance of your system.
Upgrade to 64, 96 or even 128 MB RAM….. ;) (much more RAM that this
might not
make sense if you have a very old CPU)

Daniel Iversen


Windows 2000 memory subsystem tweaking

BackUP
Windows 2000 memory subsystem tweaking

By Ars Staff |

Introduction

The memory subsystem is always one of the most important systems to tweak within an OS. Not only does it control the RAM, but it also dictates much of how the other subsystems within the computer communicate with each other. Since Windows 2000 is the 'performance' OS of the Microsoft world, it makes sense to squeeze all the speed out of the memory subsystem as possible, hence this article. Within, we will be covering such topics as removing some of the bloat from the OS and tweaking the registry. The different tweaks occur in different areas, but all affect the OS's memory usage. We'll start out with some BIOS tweaks (that are good for just about any PC, not just those with Windows 2000), but with the other tweaks, make sure you've logged off your normal user account and come back in as an administrator, because otherwise some of these optimizations simply won't stick.


BIOS Tweaks

There are several settings within the BIOS that can be used to tweak the memory subsystem. Here is a rundown of the most common ones:

CAS Latency - CAS latency is a setting which determines the column access time for the RAM in your system. The lower the latency, the faster and more frequently the computer is able to access the RAM for different pieces of information. SDRAM has a standard latency of 3, but most pieces can handle a latency of 2. You can also buy SDRAM spec'ed to run at CAS 2 for a price. RDRAM, on the other hand, has a much higher latency, and it is more greatly affected by a change in latency, so I wouldn't recommend fooling with latency settings if you are using it. Warning: Lowering the latency of your RAM below its specification is a form of overclocking, so be careful. You might also want to run a stability test (timedemo loop or something similar) after lowering the latency to make sure your system is stable.

RAS to CAS Delay - This setting determines the amount of time between a row activate command and a read/write command. A lower setting is faster, but take the same precautions with this setting as you would with changing the CAS latency.

RAS Precharge Time - This setting determines the number of cycles the RAM requires between DRAM refreshes to accumulate its charge. A lower setting here will speed up the system memory, at the risk of causing instability. Again, be careful to make sure that your system is stable after modifying this setting.
SDRAM Precharge Control - This setting determines how the computer manages the precharging times for the SDRAM. Results may vary with this setting, so test both, and use whichever works best. This setting defaults to disabled on most systems.

Shadow System BIOS - Enabling this setting copies the system BIOS into main memory for faster execution. Most users will have a speed increase with this setting enabled, in both startup time and overall system execution.

System BIOS Cacheable - Enabling this setting will allow the system to cache the BIOS to the L2 cache when necessary, speeding up BIOS execution even more than a shadow. This setting works best when used in conjunction with a shadowed system BIOS.
?

Registry Settings

Several Registry settings can be used to tweak the memory subsystem from within Windows 2000. However, be careful, because it is very easy to kill Win2k by fooling around with the Registry. As was said before, you should be careful to back up copies of any of the values you choose to change, just in case the setting doesn't quite work out for you. The following values can be found at [HKLM/System/CurrentControlSet/Control/Session Manager/Memory Management]:

DisableExecutivePaging - When enabled, this setting will prevent the paging of the Win2k Executive files to the hard drive, causing the OS and most programs to be more responsive. However, it is advised that people should only perform this tweak if they have a significant amount of RAM on their system (more than 128 MB), because this setting does use a substantial portion of your system resources.? By default, the value of this key is 0.? To enable it, set it to 1.

LargeSystemCache - When enabled (the default on Server versions of Windows 2000), this setting tells the OS to devote all but 4 MB of system memory (which is left for disk caching) to the file system cache. The main effect of this is allowing the computer to cache the OS Kernel to memory, making the OS more responsive. The setting is dynamic and if more than 4 MB is needed from the disk cache for some reason, the space will be released to it. By default, 8MB is earmarked for this purpose. This tweak usually makes the OS more responsive. It is a dynamic setting, and the kernel will give up any space deemed necessary for another application (at a performance hit when such changes are needed).?As with the previous key, set the value from 0 to 1 to enable. Note that in doing this, you are consuming more of your system RAM than normal. While LargeSystemCache will cut back usage when other apps need more RAM, this process can impede performance in certain intensive situations. According to Microsoft, the "[0] setting is recommended for servers running applications that do their own memory caching, such as Microsoft SQL Server, and for applications that perform best with ample memory, such as Internet Information Services."
IOPageLockLimit - This tweak is of questionable value to people that aren't running some kind of server off of their computer, but we will include it anyway. This tweak boosts the Input/Output performance of your computer when it is doing a large amount of file transfers and other similar operations. This tweak won't do much of anything for a system without a significant amount of RAM (if you don't have more than 128 MB, don't even bother), but systems with more than 128 MB of RAM will generally find a performance boost by setting this to between 8 and 16 MB. The default is 0.5 MB, or 512 KB. This setting requires a value in bytes, so multiply the desired number of megabytes * 1024 * 1024. That's X * 1048576 (where X is the number, in megabytes). Test out several settings and keep the one which seems to work best for your system.
?

Disabling Startup Programs

Disabling startup programs within Windows 2000 isn't nearly as simple as it is in Windows 9x/Me, where you can manage that task from within the System Information program. The only way to disable startup items that aren't in your Startup folder is to open up Regedit and browse to [HLKM\SOFTWARE\MICROSOFT\WINDOWS\CURRENTVERSION\RUN]. From there, you can manually delete the values, which are starting the unwanted applications. We would recommend that you export the values that you intend to delete, however, just in case you make an error.


Non-registry tweaks

Performance Options There are some tweaking options for Windows 2000 that don't require the use of Regedit, of course. One of them is called Application Response. Effectively, what this setting does is determine whether or not the foreground application gets more of the processor's time than the background programs. This setting can be found within the Performance Options section of the System control panel's Advanced tab. Within Application Response, there are two options: Optimize Performance for Applications, and Optimize Performance for Background Services. The former gives extra processor time to the foreground application, and the latter gives each program the processor time due to it as prescribed by its priority level.
  
Priority level, if you aren't familiar with the term, is the ranking that the computer uses to determine which programs are more important (and hence get more processor time). This level is determined by two things, Priority Class (Real-Time, High, Normal, Idle) and Thread Priority (Time Critical, Highest, Above Normal, Below Normal, Lowest, Idle). Here's a chart to help you conceptualize the concept:

? ? Priority Class
Thread Priority ? Real-Time High? Normal Idle
Time Critical 31 15 15 15
Highest 26 15 10 6
Above Normal 25 14 9 5
Normal 24 13 8 4
Below Normal 23 12 7 3
Lowest? 22 11 6 2
Idle? 16 1 1 1

?
The ranking, from 1 to 31, determines how much of the computer's time is dedicated to that particular process. We can change the priority class of the program in one of two ways. The first way is through the Task Manager, and is done while the program is already running.? If you right-click on the desired program under the Processes tab, you will be presented with the option of switching the program's priority class. We can also change the priority on program startup by using a special batch file to execute the program. The batch file (.BAT) would look like this when it is open in a text editor:

Echo off
Start /


Example: Echo off
Start /high c:\windows\notepad.exe (not as if you would ever care about the priority class of notepad?)
If you are storing the batch file in the same directory as the file you're running, you don't need the path. If the batch file was being stored in c:\windows, and you wanted to run notepad, you could use the form:

Echo off
Start /

 
Example: Echo off
Start /high notepad.exe
 
If you needed to use command line options, they can just be added at the end as if you were running the program from the Run dialogue box.? Be aware that changing a program's priority to Real-Time will give it the ultimate priority in the system, to the detriment of all other programs.
?

Disabling Windows File Protection

Normally, I'd spend a significant amount of time discussing, in detail, how to disable windows file protection before continuing with the next topic. However, seeing as we already have a sizable article on the topic here at Ars, I'll just tell you to go look at it and apply the tweak before you continue on with removing POSIX and OS2 support.
?

Removing POSIX & OS2 Support

POSIX is a standard for operating system interoperability that is required of all operating systems purchased by the government, and OS2 support is, well, support for programs originally written for the OS2 platform. Since almost no one has a use for these subsystems, we might as well disable them and save ourselves the wasted memory, right? Sadly, Microsoft hasn't included any official way of disabling these subsystems, so we'll have to do it the old fashioned way, by deleting the files that control it. To do this, first you need to disable Windows File Protection. After that is completed, you will need to delete the following files from your winnt/system32 directory: OS2.exe, OS2SRV.exe, PSXSS.EXE, OS2SS.exe, and POSIX.exe. You may wish to simply rename them, in case their removal causes you some problems.
  
Of course, once these subsystems are removed, you will no longer be able to use programs which require them. I personally haven't run into any problems, but some people have informed me that certain tools included with the Win2k resource kit require POSIX, so if you can't get something to run, you know why.
?

Removing Extraneous Windows Components

This tweak allows you to have more flexibility when enabling/disabling Windows components, allowing you to remove the games, as well as other parts of the OS that the installer generally doesn't allow you to mess with. To perform the tweak, you need to open the sysoc.inf file (found in the winnt/inf folder) in notepad. Within the file, there are several HIDE commands - delete the word HIDE (but be careful to preserve the commas) everywhere it appears and save the file. You should now have several more options when adding and removing components through the add/remove programs applet in the control panel.
?

Disabling Visual Effects and Sounds

If you aren't using TweakUI (you should really pick up a copy!) to customize your shell, here's an easy way to remove those memory hogging visual effects. Go over to the Display applet and look under the effects tab. I would recommend disabling Use Transition Effects, Smooth Edges of Screen Fonts, Use Large Icons (unless you have bad eyesight), and Show Window Contents while Dragging. If you're using TweakUI, you'll probably want to use that, because it can also be used to tweak out the menu speeds and other similar settings.

Disabling system sounds is another way to preserve precious system memory as well. To do this, simply open up the sounds applet and select the 'No Sounds' scheme from the dropdown menu. Not only will this free up some system memory, but many people find the sounds annoying to begin with - you're probably better off without them.
?

Heap Compaction

This is the process also known (although improperly) as memory defragmentation, and has been used with Win9x for some time. The process is of questionable benefit to Windows 2000, because it manages its memory in an entirely different way than Win9x does, but the information could be useful nonetheless. What is actually occurring when one 'defragments' the system memory is a dumping of main memory to the page file, forcing the computer to reload all of the active information into memory. In computing terms, this is called Heap Compaction, or Garbage Collection. You can use a small, Visual Basic program to perform this action. Simply open up a new file in notepad, input the line Mystring = Space(16000000), and save the file with the .vbs extension.
 
Assuming you have the Visual Basic runtime libraries installed on your computer (they're installed by default by Win2k), when you execute this file it will flush the system memory. This is particularly useful after running a program with a known memory leak - it can be used to discard the leaked space and allow other programs to use that portion of memory again. If you have a large amount of system memory, you may wish to consider using a higher number within the brackets of the visual basic script - I have tested values up to 80000000 without any problems on my system. Using a higher number should more effectively purge the system memory of leaked space.?
??

Video - How to Run Fdisk on Windows XP Pro

While Fdisk is not included with Windows XP Pro, the functionality of the Fdisk program is still there and can be used to repartition or fix the master boot record. Discover how to manage a hard drive on Windows XP Pro with the help of this free video from an experienced IT computer consultant about troubleshooting Windows XP

Read more:
How to Run Fdisk on Windows XP Pro | eHow.com





MS - Slow PC? Optimize your computer for peak performance

15. ledna 2011

Jak hluk ničí sluch a zdraví

Jak hluk ničí sluch a zdraví


Hluk a sluch - Domácí Lékař ČT

Hluk je pro sluch zhouba / Moje zdraví

... Pokud je zvuk příliš silný, ničí nervové buňky ve vnitřním uchu. Čím déle působí na ucho, tím více nervových buněk umírá. A jak ubývá počet sluchových buněk, zhoršuje se sluch. Nové buňky se již nevytvoří a neexistuje žádný způsob jak je oživit...

... Při postižení sluchu dochází nejdříve k omezenému vnímání vysokých frekvencí. Z tohoto důvodu takto postižení lidé hůře slyší ženské a dětské hlasy.
Ztráta schopnosti vnímat vysoké tóny vyvolává i zkreslené vnímání hlasu.
Nemocný slyší sice hlas, ale nerozumí významu sděleného. Tito lidé mají též potíže rozlišit slova se sykavkami (c, z, s, š). Vyšetření pacienty nebolí ...


Lidé obtěžovaní hlukem


Kde decibely útočí na zdraví. Podívejte se na mapu


Kde ničí zdraví hluk? Stát to poprvé zveřejnil

Hluk – a jak nás ovlivňuje



Hluk a zdraví

...než účinky na sluch. Hluk vede k rušení vzájemné hlasové komunikace, dále k poruchám koncentrace až k slovním nedorozuměním a může vést i k problémům v ...

Hlukové mapy

Především mladí lidé nešetří hlasitou hudbou z iPodů a dalších technických vymožeností, které jsou slyšet i v širokém okruhu posluchače.
"Poslech ze sluchátek negativně ovlivňuje stav sluchového ústrojí zvláště u mladých lidí při mnohahodinové zátěži," upozornila Bendová.
Do ordinací podle ní přichází v posledních pěti až deseti letech více lidí ve středním věku se zhoršeným sluchem. "A zvyšuje se i počet mladých lidí, kteří při dosud výborném sluchu mají nepříjemné ušní šelesty," dodala Bendová.
zdroj


Open space kanceláře jsou zdraví škodlivé

Open space kanceláře škodí zdraví a mohou vést k paranoidnímu chování


... Dalším pojmem je efektivita. Jak může být ale zvýšena efektivita práce v prostředí, kde musí zaměstnanec vnímat také okolní vlivy, které ve většině případů znamenají zvýšený hluk a tudíž snížení jeho schopnosti soustředit se na práci. Pracovat v otevřeném prostoru, kde neexistuje soukromí na práci, je psychicky velmi náročné. Ti, kteří se stěhovali z vlastní kanceláře do „open space“, měli s tímto přesunem velký problém a často uvažovali i o odchodu z firmy, protože takové pracovní prostředí pro ně bylo nevyhovující...
Rozdílnost lidí by měla být respektována i v pracovním prostředí. Z psychologického hlediska jsou lidé děleni podle zaměření na: 1) vztahy, 2) výkon, 3) moc 
zdroj

Co vše může ovlivnit lidský sluch?


Hluku není možné přivyknout. Pokud si na hluk zvykáte, je to zřejmě důsledek poškození vašeho vnitřního ucha. Pokud již k poškození sluchu hlukem došlo... 

Hluk jako nebezpečný faktor

Jak hluk poškozuje sluch?

 
Hluk - wiki
 
AKUSTICKÁ ŘEŠENÍ AMF

Hluk má na nás negativní vliv


Negativní dopad hluku na zdraví a sluch

VÝSKYT A PůSOBENÍ ŠKODLIVÝCH AUDIOSIGNÁLU V ŽIVOTNÍM PROSTŘEDÍ


More Stress Equals Less Productivity

Stress and Noise Pollution: How You May Be At Risk

•Workplace Noise—Most of us may think of loud assembly lines or construction sites when we think of noise pollution in the workplace, and while these examples definitely apply, regular offices are not immune. With more people packed into busy office spaces, office noise is a common complaint. Co-workers who talk, drum their fingers on the desk, or offer other distracting noises can decrease the productivity of those around them without realizing it...

more

Noise Management   

Less, Part 2: Noise


Negativní dopad hluku na zdraví a sluch


Účinky hluku na zdraví SAFEWORK

Úvod do problematiky hluku při práci




Jak se naučit zpívat?

Hudební a absolutní sluch 

Jak dobře pečovat o sluch?















openspace

7. ledna 2011

Cestování

Cestování



Reportáž z Íránu: Starobylý Jazd působí exoticky i na zkušené cestovatele


Írán - Jazd - Árjan - Persie - Iran
Kolem se táhnou jen bezútěšné, vyprahlé pustiny lemované stejně smutně působícími horami: tohle nevypadá jako příjemné místo k životu. Přesto lidé obývají město Jazd v centrálním Íránu nepřetržitě už nejméně 3000 let a jeho stará část působí exoticky i na zkušené cestovatele.


www.tourismiran.ir          oficiální íránské stránky, též anglicky
www.yptio.com               turistické informace o Jazdu a okolí
www.key2persia.com      spolehlivá agentura, pomůže i s vízem
www.irpedia.com            informace o turistických atrakcích Íránu

Jak se tam dostat?
Z Prahy jen s přestupem. Např. se spol. Pegasus z Vídně s přestupem v Istanbulu (5000–8000 Kč).

Vízum přes agenturu
Prostřednictvím některé íránské agentury si nejprve sežeňte tzv. referenční číslo, to ukažte při nástupu do letadla v Evropě. V Teheránu doufejte, že vám vízum udělí. Celkový náklad asi 100 eur.

Doprava po Íránu
Hustá síť leteckých linek, pohodlných dálkových autobusů i spořádaných vlaků dělá z cestování po Íránu příjemnou zkušenost. Vnitrostátní letenky koupíte až na místě, cena je asi 20 USD za úsek.

Kde se ubytovat
Silk Road Hotel