The network design problem considered in this paper provides the basis for the solution of many interesting and practical engineering problems, of which one notable example is the link capacity expansion problem of existing communication networks. We are particularly interested in the possibility of using this problem as a subproblem when solving the planning and design problem of multiservice ...

IP based Virtual Private Networks (VPNs) are being deployed as the solution of choice for site-to-site communication for a large number of enterprises. The provider networks that support these services are faced with unique challenges in terms of network planning. There is a lot of value in understanding the characteristics of VPNs from the perspective of planning, provisioning and maintenance ...

This paper focuses on network planning strategies for the global communications carrier. It discusses strategic planning for the provision of new data and Internet services, and assesses alternative network designs and technologies to provide optimized solutions and service delivery. The discussion covers the regional, metropolitan and local, or last mile, networks and related access technologi...

Abstract Brachytherapy has an excellent clinical outcome for different treatment sites. However, in vivo verification is not performed the majority of hospitals due to lack proper monitoring systems. This study investigates use imaging panel (IP) and photons emitted by a high dose rate (HDR) 192 Ir source track motion obtain some information related patient anatomy. The feasibility this approac...

PURPOSE Pulmonary toxicities, including infectious pneumonia (IP) and idiopathic pneumonia syndrome (IPS), are serious side effects of total body irradiation (TBI) used for myeloablative conditioning. This study aimed to evaluate clinical factors associated with IP and IPS following TBI. MATERIALS AND METHODS Fifty-eight patients with hematologic malignancies who underwent TBI before allogene...

While the process of IMRT planning involves optimization of the dose distribution, the procedure for selecting the beam inputs for this process continues to be largely trial-and-error. We have developed an integer programming (IP) optimization method to optimize beam orientation using mean organ-at-risk (MOD) data from single-beam plans. Two test cases were selected in which one organ-at-risk (...

The Optiplan planning system is the first integer programming-based planner that successfully participated in the international planning competition. This engineering note describes the architecture of Optiplan and provides the integer programming formulation that enabled it to perform reasonably well in the competition. We also touch upon some recent developments that make integer programming ...

To improve the efficiency of industrial automation systems, many operators are considering the possibility of IP upgrades to provide centralised control/management and remote monitoring. When migrating to converged IP-based networks, acquiring an Ethernet communication framework will be necessary to provide higher bandwidths and longer transmission distances, which can require the installation ...

Planning of data transfers and allocation of network resources becomes an interesting problem when bandwidth of a requested traffic is comparable to a capacity of available networks. An interactive high-quality media distribution for collaborative environments is one of the important applications of the problem. The CoUniverse framework (Liška and Holub 2008) was proposed to handle these applic...