Multi-sourcing, the blending of services from multiple external and internal providers, has gradually become the standard mode of operation in IT outsourcing. It allows companies to assemble a best-ofbreed provider portfolio and to reduce costs. A key difference between singleand multi-sourcing is the potential interdependence between services delivered by multiple providers. To deliver a seaml...

it has been proved that natural frequencies are stationary at the natural modes. also it has been shown that at the first mode it is a minimum and for systems with finite number of degrees of freedom the highest frequency is maximum (reference 1 and 2). beyond these statements nothing more can be said about the behavior of the natural frequencies without defining precisely the manner in which t...

the effect of axial deformation of shell particles on the dynamic instability (flutter) of cantilevered cylindrical shells made of functionally graded materials (fgm) under an end axial follower force is addressed. to this end, at first, results for free vibration of fgm cylindrical shells were verified with previous outcomes and they were in very good agreement. then, the effect of axial defor...

background: the aim of this work was to study the feasibility of constructing a fast thorax model suitable for simulating lung motion due to respiration using only one ct dataset. materials and methods: for each of six patients with different thorax sizes, two sets of ct images were obtained in single-breath-hold inhale and exhale stages in the supine position. the ct images were then analyzed ...

Energy management in sensor networks is a critical issue to prolong the network lifetime. However, the end-to-end latency increases due to energy saving algorithms. We propose a new protocol, ELS (Energy efficient low Latency Sleep Schedule for Target Tracking Sensor networks), that provides a dynamic sleep schedule for the radios to increase the network lifetime as well as transmit the target’...

In wireless mesh networks, delay and reliability are two critical issues in the support of delay-sensitive applications. Due to sleep scheduling designed for energy efficiency, a node along an end-to-end path needs to wait for its next hop to wake up before it can transmit, which incurs extra delay. In addition, because of unreliable wireless communications, a node may not successfully receive ...