Wireless networks are now proliferating due to the success of the IEEE 802.11b protocol, also known as “Wi-Fi” (Wireless Fidelity). A Wi-Fi network is characterized by a set of base stations (also called access points) placed throughout the environment and connected to the traditional wired LANs. This technology allows nomadic users a broadband access to the Internet if they are in the transmis...

We present a Universal Rate Control Protocol (URCP), which provides applications with fair and full link utilization while operating at low delay and loss levels as needed by interactive real-time communications (RTC) applications across a range of complex networks in use today, such as Wi-Fi hotspots, 4G (HSPA+), and WiMAX. As opposed to many existing rate control techniques which are speciall...

Recent shear experiments in well-entangled polymer solutions demonstrated that interfacial wall slip is the only source of shear rate loss and there is no evidence of shear banding in the micron scale gap. In this work, we experimentally elucidate how molecular parameters such as slip length, b, influence shear inhomogeneity of entangled polybutadiene (PBD) solutions during shear in a small gap...

This paper evaluates performance impact of WPA2 security protocol on various operating systems in modern wireless networks. For the purpose of experiments IEEE 802.11n wireless network platform was deployed. Metrics of throughput and jitter were obtained during the generation of TCP and UDP data flows in different security scenarios. Experimental results showed that IPv4 operating systems achie...

1389-1286/$ see front matter 2011 Elsevier B.V doi:10.1016/j.comnet.2011.06.012 ⇑ Corresponding author. E-mail addresses: [email protected] [email protected] (X. Pérez-Costa), seba (S. Sallent-Ribes). 1 In this paper we refer indistinctly to the set of from the work of the IEEE 802.11 group as Wi-Fi or Wi-Fi Direct is a new technology defined by the Wi-Fi Alliance in order to enable efficie...

The carpool problem is to schedule for every time t ∈ N l tasks taken from the set [n] (n ≥ 2). Each task i has a weight wi(t) ≥ 0, where ∑n i=1 wi(t) = l. We let ci(t) ∈ {0, 1} be 1 iff task i is scheduled at time t, where (carpool condition) wi(t) = 0 ⇒ ci(t) = 0. The carpool problem exists in the literature for l = 1, with a goal to make the schedule fair, by bounding the absolute value of E...

In back-propagation (Rumelhart et al, 1985) connection weights are used to both compute node activations and error gradients for hidden units. Grossberg (1987) has argued that the dual use of the same synaptic connections (“weight transport”) constitutes a bidirectional flow of information through synapses, which is biologically implausable. In this paper we formally and empirically demonstrate...

The implantation of a biotelemetry transmitter for core body temperature (T(c)) and motor activity (MA) measurements is hypothesized to have effects on growth and circadian rhythmicity depending on animal body-to-transmitter (B:T) size ratio. This study examined the impact of transmitter implantation (TM) on body weight, food intake (FI), water intake (WI), and circadian T(c) and MA rhythms in ...

--A compact fractal antenna based on the Sierpinski Carpet is proposed and designed in this paper. The paper illustrates the design optimization of the modified fractal antenna up to second order iteration for multiband characteristics. The antenna is fed by coaxial feed. The design is obtained at the center frequency 2GHz. The designs are simulated for various locations of coaxial feed. Moreov...