Children‚ Cell Phones‚ and Possible Side Effects There are possible health risks that go along with allowing a child to use a cell phone. This subject has been debated for years. Many researchers and health care professionals have done studies and given their opinions about it. Although cell phone companies do not opening warn you when you purchase a cell phone‚ I take the advice of risk very seriously. Being a mom‚ I found the following information very helpful when deciding that a cell
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electromagnetic waves that lie in the range of 3 khz to 300 Ghz are used for the wireless communication between the two devices. The signal is modulated at the transmitter end and then the antenna converts this electrical signal into the radio waves and emits them. The medium in which they travel is space. The receiving antenna catches the waves at the receiving end and then the signal is demodulated and converted back to its original form. These waves are highly affected by the interference
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ABSTRACT This project focuses on the development of a web based attendance register system‚ called mobile student attendance monitor. This project is motivated due to the fact that the student’s attendance record is the most important element which can reflect their academic achievement in the institutions. Mostly‚ the attendance register is circulated in the lecture rooms by the lecturers. This is a very time consuming method and not ideal for a large number of students in a big lecture hall.
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Table of Contents Introduction 2 Methodologies 2 Literature Review 3 Wired Connection 3 Dial-Up 3 ADSL/DSL 3 Fiber Optic 4 Wireless Connection 5 Fixed Wireless 5 Wimax 5 Mobile Internet 7 Analysis 7 Findings 8 Advantages 8 Recommendation 9 Conclusion 9 Introduction In the early nineties‚ Bangladesh had access to email via dialup to Bulletin Board Systems (BBS) of a few local providers. The combined Internet users of all the email-only service providers were not
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Content 1. Abstract……………………………………………………….. 1 2. Introduction…………………………………….…………….. 2 3. Design & Analysis…..……………………………………….. 3 4. Result ………………………………………………………… 10 5. Conclusion…………………………………………………..... 10 Smart Dust Shilpa Nagod Page 1 of 10 SMART DUST 1.Abstract ’Smart’ dust’ is a minute grain of silicon that spontaneously assembles‚ orients and senses its local environment‚ a first step toward fan development of rebels the size of sand grains that could be used in medicine‚ bioterrorism
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the structure of linear transversal equalizer. 11. In an OFDM modem with 48 channels‚ each channel uses 16 QAM modulations. if the overall transmission rate is 10 Mbps. What is the symbol transmission rate per channel? 12. What are the sectored antennas? How they are useful in combating multipath? 13. What are the popular access schemes for data networks? Classify them. 14. What is the difference between the access technique of IEEE802.3 and IEEE802.11? 15. What is the difference between performance
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John and Carrie. I’m about to share with you one of the best‚ worst‚ and wildest experiences I have ever faced. It all started on a cold‚ September day‚ with it storming cats and dogs. I was in my bookshop‚ right next to the Blackleaf Lake‚ when he walked in. John was soaked from head to toe‚ and I just assumed it was from the storm. I got up off of the reading couch‚ and asked if he would like a towel and something dry to wear‚ and as I approached him I noticed what he was wearing. He looked
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Matrix Generation The MIMO decoder implemented in this demo models a 4 transmit and 4 receive wireless system with BPSK modulation. The channel matrix G‚ whose elements Gij represents the amplitude distortion from the j-th transmit antenna to the i-th receive antenna‚ are real zero mean Gaussian variables with variance 1 per dimension. The channel matrix used in the demo is generated using the MATLAB® function randn() with a fixed seed initialized in the InitFcn Model callback function of the Model
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6 R’s The 6 R’s are an important checklist. They are used by designers to reduce the environmental impact of products. They can also be used to evaluate the environmental impact of other products. Respect – In order to understand what it means to be a part of the solution‚ you have to begin with respect. Respect for all things: people‚ animals‚ bugs‚ birds‚ fish‚ snakes‚ rivers‚ lakes‚ oceans‚ trees‚ mountains‚ valleys and so on. Rethink — Everything on Earth is connected‚ and every decision
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1. A LAN or local area network is a group of computers all located in the same area that are usually connected via some means. (Wireless or wired). 2. 3 types of servers are FTP‚ web‚ and application server. A file transfer protocol server is used to secure transfer files between 2 computers while providing ease of use (transfer protocols). A web server serves content to the web browser and allows the content to be displayed on user web browsers‚ all done with the aid of http. Lastly‚ an application
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