transmission techniques can further maximize the transfer of data rate through VLC. Till now this technique was implemented through white LED bulbs only but groups at the University of Oxford and the University of Edinburgh are focusing on parallel data transmission by the use of multiple LEDs or array of LEDs, where each LED allows a different stream of data. Mixtures of red, blue, green LEDs are also used by some teams to encode different data channels by varying the light frequencies. In simple words
Scorpions are the most ancient predatory class of arthropods that lived on earth for millions of years. There have been more than 1,500 species of scorpions identified worldwide and there are only 25 of them venomous to humans and other organism. Scorpions’ venom has played a critical role in their survival due to its exceptional mixture of component which consists of enzymes, short peptides, simple amino acids and other chemical secreted from the venom glands. These short peptides (30-80 amino acid)
world of internet with the technology like Wi-Fi. The Wi-Fi technology uses 2.4-5GHz RF for sending the data at high speeds. But, Wi-Fi has some drawbacks such as, it has limited range up to only 100 metres and also bandwidth limited up to 50-100 Mbps. To overcome the drawback of the Wi-Fi Professor Harald hass (a German Physicist) has come up with a phenomenal concept of Data through illumination. Data through illumination
communications. a. FCC b. Ieee c. 7. What is the National Fire Protection Association responsible for? a. The
represent characters. Bluetooth port - (p. 294) technology that uses radio waves to provide hands-free cellular phone communications. Blu-Ray disc - (p. 294) storage device, similar to CDs and DVDs, but are able to store even larger amounts of data. Bus network - (p. 294) computers networked together that are lined up on a single cable. Byte - (p. 294) eight bits treated as a single unit by a computer to represent a character. Cache memory - (p. 294)
packets tend to be constructed in the standard packet format. Packet formats generally include a header, the body containing the message data, also known as the payload, and sometimes a footer which is also known as the trailer. The packet header shows the destination of the packet and often shows the length of the data in the message. The packet footer contains data that implies the end of the packet, such as a special sequence of bits known as a magic number. The packet header and the packet footer
1.2 Bluetooth application Bluetooth is designed to operate in an environment of many users. Up to eight devices can communicate in a small network called a piconet. Ten of these piconets can coexist in the same coverage range of the Bluetooth radio. To provide security, each link is encoded and protected against eavesdropping and interference. Bluetooth provides support for three general application areas using short-range wireless connectivity: Data and voice access points. Bluetooth facilitates
groups based on their coverage range: Wireless Wide Area Networks (WWAN), Wireless Local Area Network (WLANs), Wireless Personal Area Network (WPAN )and etc. WWAN includes wide coverage area technologies such as 2G cellular, Cellular Digital Packet Data (CDPD), Global System for Mobile Communications (GSM). WLAN, representing wireless local area networks, includes 802.11, HiperLAN, and several others. WPAN, represents wireless personal area network technologies such as Bluetooth and IR All of these
system and GPS system. The software stores the data and retrieves it for the user guidance. ARM-7 monitors all the components of the vehicle. Keywords- ARM-7, components, GSM system, GPS system. I. INTRODUCTION In the developing new technologies in the world we find lack of security in many fields. Security must be enhanced
Zara: IT for Fast Fashion Report and Recommendations By Poorna Chandra Prasad Gandla Northeastern University College of Professional Studies Master of Professional Studies Informatics with Information Security Management Introduction “Zara – IT or Fast Fashion” is a case prepared at Harvard Business School, by Andrew McAfee, Vincent Dessian, and Anders Sjoman. Zara is a fashion clothing line under the multinational clothing retailer and manufacturer Intidex. The case opens with a discussion between