the last few years have seen an explosion in the deployment and use of the internet, networking and telecommunication technologies. this was followed by significant increases in the speed and capacity of computing, for example petaflop supercomputers are becoming common. we will examine some of the developments; explain their importance and potential impact. many forecasts and predictions have ...

Relativizing computations of Turing machines to an oracle is a central concept in the theory of computation, both in complexity theory and in computability theory(!). Inspired by lowness notions from computability theory, Allender introduced the concept of “low for speed” oracles. An oracle A is low for speed if relativizing to A has essentially no effect on computational complexity, meaning th...

Wireless mesh networks have the potential to provide ubiquitous high-speed Internet access at low costs. The good news is that initial deployments of WiFi meshes show the feasibility of providing ubiquitous Internet connectivity. However, their performance is far below the necessary and achievable limit. Moreover, users’ subscription in the existing meshes is dismal even though the technical ch...

In recent years, IP telephone has achieved remarkable progress on the Internet through "low price ", "continuous connection", and "high speed communication band". However, it is not easy to use IP telephone over firewall and NAT because of its restrictions of the communication. We have proposed the system called SoFW (SIP over Firewall) that suppresses the problem. In this paper, detailed funct...

Background and aims: The purpose of this study was to identify the information derivation techniques of medical and allied health sciences’ postgraduate students. Methods: The study was a cross sectional descriptive survey. The data was collected from Tabriz University of Medical Sciences’ student using a structured questionnaire. Data was analyzed using descriptive statistics and T-test throug...

The deployment for new Internet services is limited by existing service creation platforms which can be characterized as closed, vertical and best effort in nature. We believe there is a need to develop a programmable Internet built on a foundation of open service interfaces and middleware technologies. To help speed the introduction of value-added services, we propose a unified, programmable Q...

Distribution networks, including both medium voltage (MV) (see e.g [1] [2]) and low voltage (LV) networks (see e.g [3]), are new candidates for providing an access to high speed communications. Transmitting high data rates communications in the [1-30 MHz] band of the order of several Mbits/s is possible using power line communications (PLC). PLC technology offers great service potential with ap...

In this study, internet-controlled heating ventilating and air-conditioning (HVAC) system has been proposed with programmable sleeping time and automatic operation mode, three steps fan speed unit, adjustable fan angle, a remote control device with an LCD and a web based control unit. A low cost microcontroller (MC) to control HVAC system and a PC as an Internet server are used. The system has ...

A brief history of developments in the field of low-speed aeroelasticity is provided in the context of application to long-span bridge structures. The paper begins with summary of some of the significant developments in aeroelasticity for low-speed aeronautical applications in the early 20th century. The role of the pivotal Tacoma Narrows failure and subsequent investigation is introduced. The ...