in this paper, we develop a capacitated location-covering model considering interval values for demand and service parameters. we also consider flexibility on distance standard for covering demand nodes by the servers. we use the satisfaction degree to represent the constraint of service capacity. the proposed model belongs to the class of mixed integer programming models. our model can be redu...

There is a growing interest in analysing freshness of data networked systems. Age Information (AoI) has emerged as relevant metric to quantify this at receiver, and minimizing for different system models received significant research attention. However, fundamental question remains: what the minimum achievable AoI any single-server-single-source queuing given service-time distribution? We addre...

Internet Protocol Television is defined as a multimedia service delivered over IP-based networks supporting quality of service (QoS), quality of experience (QoE), security, interactivity, and reliability. This service is rapidly expanding to both wireless and mobile networks through mobile devices. This trend demands a seamless IPTV service architecture for those mobile devices in heterogeneous...

Pre-service mathematics teachers must have good numeracy skills because this ability is needed in all aspects of life, home, work, and society. This study aims to identify the pre-service on Acehnese culture-based Minimum Competency Assessment (MCA). A descriptive quantitative method was used with 24 MCA questions based culture as an instrument. The subject 158 education students from three Ace...

A dedicated Community Enuresis Clinic was established in 2004 in Cavan and Monaghan. The service was audited using ERIC (Education and Resources for Improving Childhood Continence) guidelines. There were 106 males and 47 females, giving an M: F ratio of 2.3:1. Monosymptomatic Nocturnal Enuresis (MNE) accounted for 127 (83%). Adequate follow-up was available for 108 children with MNE and in this...

A simple model of multi-hop communication in ad-hoc networks is considered. Similar models are often adopted for studying energy efficiency and load balancing of different routing protocols. We address an orthogonal question never considered by the networking community: whether, regardless of specific protocols, two networks may be considered as equivalent from the viewpoint of the communicatio...

The Guaranteed Frame Rate(GFR)service is positioned as an intermediate alternative between Available Bit Rate(ABR)service, which uses a closed-loop feedback control framework, and Unspecified Bit Rate(UBR) service, which provides no assurance whatsoever. The GFR service is expected to be useful for TCP/IP based applications. The aim of the GFR service is to provide each ATM VC with a minimum se...

The TCP/IP protocol is the standard requirement for all applications that need to communicate over the Internet. Guaranteed Frame Rate GFR, a recently approved service category by ATM Forum is best suited to efficiently support TCP/IP Traffic in ATM networks. GFR is proposed to overcome the performance degradation problems faced by TCP/IP Applications over ATM. It is intended to provide minimum...