z-mac

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Z-MAC: A Hybrid MAC for Wireless Sensor Networks

This paper presents the design, implementation and performance evaluation of a hybrid MAC protocol, called Z-MAC, for wireless sensor networks that combines the strengths of TDMA and CSMA while offsetting their weaknesses. Like CSMA, Z-MAC achieves high channel utilization and low-latency under low contention and like TDMA, achieves high channel...

Tags: Contention, MAC, Performance, Network, TDMA, Sensor, Association For Computing Machinery, Z-MAC, Performance Management, Cellular Phones, Wi-Fi, Wireless, Human Resources, Workforce Management, Consumer Electronics, Personal Technology

White papers 2005-11-04

Additional Resources

Psystar files answer to Apple complaint - "M" word used enthusiastically

Mac clone maker Psystar has filed answers to Apple's complaint. by Adrian Kingsley-Hughes

Tags: Apple Macintosh, Operating System, Apple Inc., Computer, Psystar, PLAINTIFF, Apple Mac OS, Desktops, Operating Systems, Software, Hardware, Adrian Kingsley-Hughes

Blog posts 2008-08-29

Video: Can Psystar take a bite out of Apple?

ZDNet correspondent Sumi Das talks with Senior Editor Sam Diaz about the brewing suit-countersuit situation between Apple and Psystar. In an effort to quash the sale of Psystar's cheap Mac OS-running computers and preserve its carefully crafted image and reputation, Apple sued the Miami-based company. Now Psystar has lobbed back...

Tags: Apple Inc., Video, Apple Mac OS, Desktops, Operating Systems, Software, Hardware, Larry Dignan

Blog posts 2008-08-29

Virtual desktop solutions and mobility

Several suppliers, including Citrix and VDIworks, have come forward to speak with me about work they're doing to address the inhibitors to deploying VDI-based solutions. Here are some of the issues these suppliers are addressing. Organizations have come to think that the only...

Tags: Desktop, Mobility, Virtual Desktop, VDIworks, Staff Member, Desktop Virtualization, Dan Kusnetzky

Blog posts 2008-08-29

Can Psystar take a bite out of Apple?

ZDNet correspondent Sumi Das talks with Senior Editor Sam Diaz about the brewing suit-countersuit situation between Apple and Psystar. In an effort to quash the sale of Psystar's cheap Mac OS-running computers and preserve its carefully crafted image and reputation, Apple sued the Miami-based company. Now Psystar has lobbed back...

Tags: Apple Macintosh, Apple Inc., Apple Mac OS, Desktops, Operating Systems, Software, Hardware, Apple, Psystar, Mac, clone, lawsuit, countersuit, Sumi Das, Sam Diaz

Videos 2008-08-28

Windows 7 pricing thoughts - Is Windows too expensive?

Windows 7 pricing thoughts - Is Windows too expensive?It is an apt comparison>Your Ubunutu/Vista comparison doesn't pass the common sense test. Think about what you can get with Ubuntu-- Compiz Fusion for eye candy, drive encryption, MythTV DVR app, OpenOffice.org, ect. You have to get Ultimate Windows to get all...

Tags: Construction, Microsoft Windows Vista (Longhorn), pricing strategy, window, Microsoft Windows, Microsoft Windows 7

Discussion threads 2008-08-28

Why does Safari stink?

Why does Safari stink?Safari on iPhone is even worseSafari on a Mac should work at least as well as Firefox. but on the iPhone it crashes regularly or locks up the iPhone. And it appears Apple's licensing is designed to preclude any competition:"Apple's software requirements for the device are too...

Tags: Web browsers, Web site development, Channel management, Web technology, KHTML, Apple Safari, Safari stink, stink, Web, Web browser, Web site

Discussion threads 2008-08-28

Why does Safari stink?

I started my day with several calls from our Special Ed folks who suddenly couldn't access their student information portal (e-Sped). I could access it without problem, our Special Education administrators could access it, but several teachers and counselors were discovering (since this was the first student day back...

Tags: Apple Safari, Web Browsers, Portals, Desktops, Internet, Hardware, Christopher Dawson

Blog posts 2008-08-28

What's in IE 8 for enterprise users?

What's in IE 8 for enterprise users?The biggest thing in IE8 for the enterprise: continued compatibilityproblems and continued foot dragging on the standards front. Also very slow JavaScript. Much slower than the already released version of FireFox, Opera, and Safari. Pretty sad . . . .RE: What's in IE 8...

Tags: Web browsers, Quality, Microsoft Internet Explorer, IE 8, enterprise user, standards, Mozilla Firefox, IE8, Web browser

Discussion threads 2008-08-28

KidsMouse for Mac (sit)

Education software suitable for infant learning with mouse operation. This software collects twelve kinds of learning games such as ABC Puzzle, The space recognition, paint, memory, number, color ball, easy puzzle, crayon, seesaw, number puzzle, shape puzzle, flowerpot, USA puzzle, and world map puzzle. All games can only be operated...

Tags: Apple Macintosh, Mouse, WhiteRoom-Web, Mice, Games, Hardware, Peripherals, Personal Technology

Software downloads 2008-08-28

Redirect Page Creator (zip)

Redirect Page Creator creates stand alone Web pages that gives Webmasters the ability to redirect visitors to other Web sites. This program uses meta refresh technology to accomplish redirecting the visitor. A Webmaster simply enters the destination URL then saves the code generated by this program. Finally the page is...

Tags: Webmaster, Visitor, Cyberweb Solutions, Java, Programming Languages, Linux, Channel Management, Microsoft Windows, Software Development, Software/Web Development, Operating Systems, Software, Marketing

Software downloads 2008-08-28

Oncilla Excel2Text (exe)

Oncilla Excel2Text is a tool to convert Excel files to Text files. The Text files can be in any of the following formats UTF8, ANSI or Unicode little endian. The tool lets you perform this conversion with out using MS Excel, it does not require that MS Excel be installed...

Tags: Tool, Oncilla Technologies, Oncilla Excel2Text, Microsoft Excel, Productivity, Microsoft Office, Office Suites, Software

Software downloads 2008-08-28

ZeeVee ZvBox Zv-100

These days, there's a wide range of products that will stream on-demand movies from the Internet to your living room (Apple TV, Vudu, Xbox 360, TiVo, PS3, and Roku's Netflix Player). The ability to access YouTube videos, video podcasts, and other online content is built into some of those products...

Tags: Corporate communications, Desktops, TVs, TV & Home Theater, ZvBox, video, PC, TV

Product reviews 2008-08-27

EIC Podcast: Apple-Psystar; Cisco vs. Microsoft; DNC; Dell

On this week's EIC squared podcast Dan and I talk about that ongoing Apple-Psystar legal showdown, Cisco and Microsoft's collision course, the Democratic National Convention and Dell's plans for the cloud. On Wednesday Psystar--that little Mac clone maker in Florida--sued Apple for antitrust violations. The big question:...

Tags: Dell Computer Corp., Microsoft Corp., Cisco Systems Inc., PostPath, Larry Dignan

Blog posts 2008-08-27

Internet Explorer 8 gets a massive makeover

Internet Explorer 8 gets a massive makeoverStandardsWhat I want to know, does the "standards" mode remove previous IE hacks? For example, using the underscore in CSS statements would be ignored by every browser except IE. If IE8 now supports standards but STILL reads the underscore hack, this could be a...

Tags: Web browsers, Microsoft Internet Explorer, Internet Explorer 8, IE8, Web browser, Microsoft Internet Explorer 7, Adrian

Discussion threads 2008-08-27

It must be a rough day in Cupertino

They just keep coming, one negative headline after another after another. At least that's how it must feel today over at Apple. In the last 24 hours or so, there have been at least four separate events that have put the company in a negative light. The widespread problems with...

Tags: Apple iPhone, Apple Inc., TechMeme, Apple Mac OS X, Internet, 3G, Service Management, Operating Systems, Software, Apple Mac OS, Cellular Phones, Consumer Electronics, Personal Technology, Sam Diaz

Blog posts 2008-08-27

Major security hole found in iPhone

Major security hole found in iPhonewhose fault?Seems to me you're blaming Apple for bad coverage when you should be blaming O2. Didn't they give you some sort of trial period when you sign up to see how the coverage was in your area?The risk Me-Firsters takeEr, I mean early...

Tags: Viruses and worms, Apple iPhone, security, 3G, security hole, phone

Discussion threads 2008-08-27

Signs of life emerge on the Vista marketing front

Signs of life emerge on the Vista marketing frontMarkets are based onDemand and Availability..Nobody needed a new OS at this stage.Nobody still does.. Ads won't change this.Plus for me.. i don't need fancy GUI tricks i could do 8 years ago under Enlightenment with X11 and Linux.There is no added...

Tags: Microsoft Windows Vista (Longhorn), marketing, Microsoft Windows Vista, Leopard, operating system

Discussion threads 2008-08-27

Psystar countersues Apple for anticompetitive business practices

Those following the Psystar saga will be interested to know that the Miami-based clone maker has fired a salvo in their legal battle with Apple. Psystar has been selling Apple clones with Mac OS Leopard pre-installed since April 2008. At a press conference yesterday Psystar CEO Rudy...

Tags: Apple Inc., Psystar, Apple Mac OS, Operating Systems, Desktops, Software, Hardware, Jason D. O\'Grady

Blog posts 2008-08-27

Apple iPhone ad banned

Apple iPhone ad bannedBetter than the alternativesMy iPhone works as promised.My Macs are more reliable than my Windows boxes.In short, there are better options.Why anyone would buy anything from Apple...is beyond me. Especially the iPhone. It doesn't work as promised in sooooo many ways.i guess every iphone user is mad...

Tags: Telecom & Utilities, iphone, Apple iPhone, Apple Inc., advertisement, cellular company, phone, Internet

Discussion threads 2008-08-27