RFCs 3689 and 3690 detail requirements for an Emergency Telecommunications Service (ETS), of which an Internet Emergency Preparedness Service (IEPS) would be a part. Some of these types of services require call preemption; others require call queuing or other mechanisms. IEPS requires a Call Admission Control (CAC) procedure and a Per Hop Behavior (PHB) for the data that meet the needs of this ...

We propose a new Per Hop Behavior (PHB) for differentiated services in IP networks. In this PHB, each network subscriber (or flow) receives a bandwidth allocation proportional to the subscribed information rate. This new PHB is called "Proportional Forwarding PHB" or PF PHB. The marking mechanism at the source or ingress router and the queuing and discard behavior at core routers are clearly de...

This paper presents a framework for situated design optimization that expands the traditional view of design optimization. It is based on the notion of interaction providing the potential for modifications of various aspects of the optimization process: problem formulation, the optimization tool, the designer and ultimately the result. In contrast to other approaches, these modifications can dr...

This paper presents some basic design concepts for the design of open distributed systems. These concepts should form the basis for the development of effective design methodologies. The paper discusses how design concepts, such as interaction, action and causality relation, can be used for modelling and structuring behaviours of functional entities in a distributed environment. The paper also ...

Large amounts of homopolymers containing -hydroxybutyrate (PHB) and copolymers containing -hydroxyvalerate (P[HB-co-HV]) are produced by Azotobacter chroococcum strain H23 when growing in culture media amended with alpechı́n (wastewater from olive oil mills) as the sole carbon source. Copolymer was formed when valerate (pentanoate) was added as a precursor to the alpechı́n medium, but it was not ...

Base stations constitute the basic infrastructure of today’s cellular networks. Unfortunately, vulnerabilities in the GSM (2G) network protocol enable the creation of fake base stations (FBSes) that are not authorized by network operators. Criminal gangs are using FBSes to directly attack users by sending spam and fraud SMS messages, even if the users have access to 3G/4G networks. In this pape...

?O: J#P5:@3H3@#@N35#K N5G@#TNKN@! NG N5(:G@NP#@:; &N@ON5 @O: GO:#HN5P T3$ #22H3$NJ#@N35 N5 @O: K#HP: "KG#GG:H 5*JT:H H:PNJ:/ S5 @ONG H:PNJ:< &ON=O NG 37 7*5;#J:5@#K NJ23H@#5=: @3 #G@H32O!GN=#K #==H:@N35 ;NGL @O:3H!< GO:#H NG @O: ;3JN5#5@ G3*H=: 37 :5:HP!< T*@ @O: N5G@#TNKN@! N@G:K7 H:.*NH:G @O: 2H:G:5=: 37 # &:#L:H (:H@N=#K J#P5:@N= 6:K;/ %NGGN2#@N(: :77:=@G #H: &:#L:H G@NKK T*@ 53@ 5:PKNPNTK:/...

M. I. Neria-González, A. R. Domínguez-Bocanegra, J. Torres, R. Maya-Yescas, and R. Aguilar-López a Departamento de Biotecnología y Bioingeniería, CINVESTAV-IPN bDepartamento de Control Automático, CINVESTAV-IPN Av. Instituto Politécnico Nacional 2508, San Pedro Zacatenco, México, D.F. Mexico c Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Santiago Tapia 403, ...

Teamwork has become increasingly important in diverse disciplines. Cognitive studies on teamwork have shown that team members in an effective team often have mutual expectations based on their shared mental models and proactively offer assistance to each other. We present a formal model called Role-Based Proactive Helping Behaviors (RoB-PHB) to enable proactive assistance among (sub)teams. Thro...

There are two cruxes of issues identified in differentiated services (diffserv) networks: One is TCP dynamics over Assured Services, and the other is the interaction of TCP and UDP flows for Assured Forwarding Per Hop Behavior (PHB). Therefore, we argue unfair distribution of excess bandwidth in an over-provisioned networks as well as unfair degradation in an underprovisioned network for TCP an...