By identifying weaknesses in TCP’s RFC specifications, Savage et al. are able to bypass TCP’s congestion control behaviours. They specifically demonstrate three techniques: ACK division, DupACK spoofing, and Optimistic ACKing. ACK division increases the sender’s transmission window artificially by ACKing at byte granularity rather than segment granularity. DupACK spoofing sends a stream of dupl...

This paper argues for a joint development of an eye gaze -based, on-line communication aid running on a standard PC with a web -camera. Tracking software is to be provided as open source to allow for improvements and individual integrations with other aids. The interface design shall be defined by the achieved resolution of the tr acking system. The design of a type -to-talk system with 12 larg...

Packing problems arise in a wide variety of application areas. The basic problem is that of determining an efficient arrangement of different objects in a region without any overlap. The simplest packing problem is rectangular packing, where both the objects and the region are rectangular. Many research works have been done on two and three dimensional rectangular packing. However there are man...

A variety of sensors and positioning methods have been developed over the years. Most methods rely on active sensors (such as sonars or lasers) which have range and power restrictions, or rely on computationally complex (and often slow) methods such as recovering position from stereo or optical flow. This paper describes a system that can determine a robot’s position and orientation, in all six...

The paper presents a method for passively tracking a moving target using a sequence of bearings from a surveillance platform. The key assumption for the method is that the target is moving at a constant speed on a fixed heading during the data acquisition period. This is the same assumption that is made for Ekelurid ranging. Parameter estimates are computed after bearings are taken as the t•ack...

his study used quantitative image analysis to examine the effect of powder forming method on a population of dense heterogeneities that could e imaged in partially sintered alumina using optical microscopy. Powder pressing resulted in a higher area fraction of dense heterogeneities than lip casting. Extreme value analysis was used to predict the size of the largest heterogeneity in the populati...

Downlo in, an endogenous inhibitor of neutrophil elastase, is expressed in human mammary epithelial cells but scriptionally downregulated in breast cancer cells. We hypothesized that elafin may exert a tumorssive activity in the context of breast cancer. In this study, we show that the retinoblastoma (Rb) pathoverns the antitumor properties of elafin. In breast cancer cells with functional Rb, ...

The problem of packing k vertex-disjoint copies of a graph H into another graph G is NP-complete if H has more than two vertices in some connected component. In the framework of parameterized complexity we analyze a particular family of instances of this problem, namely the packing of stars. We give a quadratic kernel for packing k copies of H = K1,s. When we consider the special case of s = 2,...

bstract—Acid-sensing ion channel 3 (ASIC3) is the m ensitive acid sensor in sensory neurons that innervate kin, muscle, heart, and visceral tissues. ASIC3 is involve schemia sensing, nociception, mechanosensation, and he ng, but how ASIC3-expressing neurons differ in their fi roperties is still unknown. We hypothesized that AS xpressing neurons have specialized firing propertie hich, coupled wi...

We present a vision system for the 3-D model-based t r acking of unconstrained human movement. Using image sequences acquired simultaneously f r om multiple views, we recover the 3-D body pose at each time instant without the use of markers. The pose-recovery problem is formulated a s a s e arch problem and entails nding the pose parameters of a graphical human model whose synthesized a p p ear...