Diseases spread over temporal networks of interaction events between individuals. Structures these hold the keys to understanding epidemic propagation. One early concept literature aid in discussing structures is concurrency -- quantifying individuals' tendency form time-overlapping "partnerships". Although conflicting evaluations and an overabundance operational definitions have marred history...

Supplementary section for Understanding Networked Applications: A First Course, Morgan Kaufmann, 1999. Copyright notice: Permission is granted to copy and distribute this material for educational purposes only, provided that this copyright notice remains attached. Concurrency is a key to achieving high throughput for repetitive tasks. Assigning separate tasks to different hosts, they can execut...

In most real-time systems, concurrency and access to shared resources are controlled by locking. A serious disadvantage is that locking may give rise to priority inversion, i.e. situations in which a high-priority task has to wait for a low-priority task to release a lock. That is a serious problem, because it can make a task miss its deadline, which, in turn can cause various types of disaster...

One of the most important decisions about the architecture of a server program is its concurrency mechanisms. However, a good concurrency model for general-purpose server programs is increasingly difficult to conceive as the runtime conditions are hard to predict. In this work, we advocate that the concurrency code is to be decoupled from server programs. To enable such separation, we propose a...

The provision of efficient methods and tool support for the development and engineering of distributed systems is a key enabling factor for the evolution of Information Technology. Distributed as well as telecommunication systems consist of components which are distributed across networks and have to cope with concurrency, autonomy, synchronization, and communication issues. The development of ...

Formal specification of a system has been an active area of research since past few decades. There are a number of formal specification languages, Z, VDM, OCL, SDL [1, 2, 3, 4, ] etc. Comparing the different speciûcation methods is not an easy task but it is meaningful in many aspects. This article focus which formal specification language is suitable for particular type of problem e.g. communi...

Search in constraint programming is a time consuming task. Search can be speeded up by exploring subtrees of a search tree in parallel. This paper presents distributed search engines that achieve parallelism by distribution across networked computers. The main point of the paper is a simple design of the parallel search engine. Simplicity comes as an immediate consequence of clearly separating ...

ABSTRACT The instrument of concurrency, whereby UK regulatory authorities share and often, in practice, lead the application competition policy, is an important feature law regime. Several studies examined its pros cons from a theoretical perspective. This first article to take different approach critically assesses Ofcom’s concurrent powers telecoms sector. review identifies number shortfalls ...

We find the algebraic laws for true concurrency. Eventually, we establish a whole axiomatization for true concurrency called APTC (Algebra for Parallelism in True Concurrency). The theory APTC has four modules: BATC (Basic Algebra for True Concurrency), APTC (Algebra for Parallelism in True Concurrency), recursion and abstraction. And also, we show the applications and extensions of APTC.

Abstract Due to non-deterministic behavior and thread interleaving of concurrent programs, the debugging concurrency performance issues is a rather difficult often tedious task. In this paper, we present an approach that combines statistical profiling, clustering visualization facilitate We implemented our in tool which integrated as plugin into widely used IDE. First, introduce with details on...