Power Line Communications ab 121.99 € als pdf eBook: Theory and Applications for Narrowband and Broadband Communications over Power Lines. Aus dem Bereich: eBooks, Sachthemen & Ratgeber, Technik,
Power Line Communications ab 121.99 € als epub eBook: Theory and Applications for Narrowband and Broadband Communications over Power Lines. Aus dem Bereich: eBooks, Sachthemen & Ratgeber, Technik,
When Thomas Edison began wiring New York City with a direct current electricity distribution system in the 1880s, he gave humankind the magic of electric light, heat, and power; in the process, though, he inadvertently opened a Pandora's Box of unimaginable illness and death.Dirty Electricity tells the story of Dr. Samuel Milham, the scientist who first alerted the world about the frightening link between occupational exposure to electromagnetic fields and human disease. Milham takes listeners through his early years and education, following the twisting path that led to his discovery that most of the 20th-century diseases of civilization, including cancer, cardiovascular disease, diabetes, and suicide, are caused by electromagnetic field exposure.In the second edition, he explains how electrical exposure does its damage and how electricity is causing our current epidemics of asthma, diabetes, and obesity.Dr. Milham warns that because of the recent proliferation of radio frequency radiation from cell phones and towers, terrestrial antennas, Wi-Fi, and Wi-max systems, broadband Internet over power lines, and personal electronic equipment, we may be facing a looming epidemic of morbidity and mortality. In Dirty Electricity, he reveals the steps we must take, personally and as a society, to coexist with this marvelous but dangerous technology.PLEASE NOTE: When you purchase this title, the accompanying PDF will be available in your Audible Library along with the audio. 1. Language: English. Narrator: Scott R. Pollak. Audio sample: http://samples.audible.de/bk/acx0/139552/bk_acx0_139552_sample.mp3. Digital audiobook in aax.
Tollbridge Technologies was a voice over broadband company founded in 1998 by Gary Tauss and Asher Waldfogel, cofounder of Redback Networks. Tollbridge was based in Santa Clara, California. Tollbridge made VoIP access gateways, residential gateways and management systems that provided class 5 circuit switch based telephone services over DSL and cable broadband access lines. Tollbridge gateways were sold to competitive local exchange carriers and cable companies. In 2000 Synergy Research market research showed Tollbridge was the leading supplier of voice over broadband equipment and Upside Magazine recognized Tollbridge as one of its Top 100 private companies. Tollbridge partnered with Arris Interactive to deliver the first VoIP cable system.
This dissertation deals with RFMEMS-reconfigurable periodic structures. Such structures are widely used as phase shifters, tunable filters or tunable impedance tuners. Due to the advancement of micromachining technologies, RFMEMS tunable or switchable capacitors became an attractive way to achieve reconfigurability. As compared to their semiconductor and ferroelectric counterparts, RFMEMS components offer lower loss and higher linearity even at elevated frequencies. The design of RFMEMS circuits involving periodic structures is often based on lumped approximation, whose validity is limited to about one-third of the cut-off frequency of the first passband. To overcome this limitation, a broadband dispersion model of distributed MEMS transmission lines is developed in this thesis. The emphasis is on right-handed periodic structures including the commonly-used shunt capacitive loading as well as series inductive loading and combination of both shunt capacitive and series inductive loading. In addition, RF-MEMS phase shifters and impedance tuners with capacitive and capacitive-inductive tuning are presented.
Integrated services digital network is a set of communications standards enabling traditional telephone lines to carry voice, digital network services, and video. Prior to ISDN, the phone system was viewed as a way to transport voice, with some special services available for data. The key feature of the ISDN is that it integrates speech and data on the same lines, adding features that were not available in the classic telephone system. There are several kinds of access interfaces to ISDN defined as basic rate interface, primary rate interface and broadband ISDN. ISDN is a circuit-switched telephone network system, which also provides access to packet switched networks, designed to allow digital transmission of voice and data over ordinary telephone copper wires, resulting in better voice quality than an analog phone.
In India, telecommunication is perceived as a reverberating success of the liberalisation policy. However, this success is tinkered with the fact that the sector is dominated by incumbent state operators, primarily in the fields of fixed-lines and broadband services. This work examines the impact of the incumbent operators on competition, the effect of actions of the regulatory bodies on competition, anti-competitive behaviors, and efforts made to promote competition in the sector. The research determines the importance of competition in Indian telecom by using an econometric analysis, and comprehend how the telecom industries in different countries have evolved over the years. The conclusions could help businesses and academics to assess the quality of competition in Indian telecom and could get an outline of the issues that surface in the industry. The research analysis offers recommendations on having a competition policy and how the competition authority and sector regulator can cooperate to check anti-competitive behaviors, resolve judiciary issues, and foster competition in telecommunications.