22 23 Polyamines are absolute requirements for cell growth. When in excess, P. aeruginosa possesses 24 six γ-glutamylpolyamine synthetases (GPSs) encoded by the pauA1-pauA7 genes to initiate 25 polyamine catabolism. Recently, the pauA2 mutant was reported to lose the capability to grow on 26 spermine (Spm) and spermidine (Spd) as sole carbon and nitrogen sources. Although this mutant 27 grew no...

Photo 1. Little auks breed at remote sites in the High Arctic, with densely aggregated breeding colonies forming on rocky, sloped terrain, creating some challenges for fieldwork. Here, little our Ukaleqarteq (Kap Höegh), East Greenland, study site rest lichen-adorned rocks above nesting crevasses, an excellent view. Far below, you can see small, brick-red cabin (bottom right), which shelters te...

A general multi-resource queueing system is defined to be a single congestion point associated with a number of different resource types and having arrivals which require some combination of the system resources simultaneously for the duration of their processing times. Such a system is characterized by a variable processing rate which is a function of the combination of Jobs being concurrently...

There are many different approaches to the task of realising a simulation, ranging from using an off-theshelf simulation tool to implementing a simulation from scratch. In this paper, we propose an approach to simulation based on the use of multi-agent systems developed in the discipline of Artificial Intelligence (AI). The field of multi-agent systems is concerned with computational systems co...

Many cooperative tasks in real world environments, such as exploring, surveillance, search and rescue, transporting large objects and capturing a prey, need the robots to maintain some desired formations when moving. Formation control refers to the problem of controlling the relative position and orientations of robots in a group, while allowing the group to move as a whole. Problems in formati...

Information sharing and coordination between buyer and vendor have been considered as useful strategies to improve supply chain performance. The debate is about what information to share and how to share most costeffectively to maximize the mutual benefits of the supply chain as a whole and the individual business players. Proposes a systematic framework for investigating the impacts of sharing...

Supervised training is essential for developing an evidence-based practice (EBP) approach for future health care clinicians. While the skills associated with asking a research question, accessing databases for best research evidence (BRE), and appraising this evidence can be taught in the classroom, the day-to-day application into patient management needs to be taught, and there is a lack of be...

blocks of GPSS, CSS blocks are predefined characterizations of IBM hardware components. Construction of the simulation model in CSS is thus primarily a matter of describing the software (operating system, application programs, etc.) which runs on the hardware. A further step in this direction of alleviating the need for simulation programming is the Systems Network Analysis ProgrardSimulated Ho...

Using domain-specific modelling environments maximally constrains users, matching their mental model of the problem domain, and allows them to only build syntactically correct models. Anecdotal evidence shows that domainspecific modelling can drastically improve productivity as well as product quality. In this paper, the foundations of (domain-specific) modelling language design are presented. ...

The mobile wireless networks have to enable full mobility for users with non degraded Quality of Service (QoS). The QoS is closely related to a mobilityof users. Resource allocation is a vital component of call-admission control that determines the amount of resource to assign to new and handoff connections for quality-of-service (QoS) satisfaction. In this paper, we present approximate analyti...