On the design of an energy-efficient low-latency integrated protocol for distributed mobile sensor networks

Self organizing, wireless sensors networks are an emergent and challenging technology that is attracting large attention in the sensing and monitoring community. Impressive progress has been done in recent years even if we need to assume that an optimal protocol for every kind of sensor network applications can not exist. As a result it is necessary to optimize the protocol for certain scenarios. In many applications for instance latency is a crucial factor in addition to energy consumption. MERLIN performs its best in such WSNs where there is the need to reduce the latency while ensuring that energy consumption is kept to a minimum. By means of that, the low latency characteristic of MERLIN can be used as a trade off to extend node lifetimes. The performance in terms of energy consumption and latency is optimized by acting on the slot length. MERLIN is designed specifically to integrate routing, MAC and localization protocols together. Furthermore it can support data queries which is a typical application for WSNs. The MERLIN protocol eliminates the necessity to have any explicit handshake mechanism among nodes. Furthermore, the reliability is improved using multiple path message propagation in combination with an overhearing mechanism. The protocol divides the network into subsets where nodes are grouped in time zones. As a result MERLIN also shows a good scalability by utilizing an appropriate scheduling mechanism in combination with a contention period

A Cyberinfrastructure for BigData Transportation Engineering

Big Data-driven transportation engineering has the potential to improve utilization of road infrastructure, decrease traffic fatalities, improve fuel consumption, decrease construction worker injuries, among others. Despite these benefits, research on Big Data-driven transportation engineering is difficult today due to the computational expertise required to get started. This work proposes BoaT, a transportation-specific programming language, and it's Big Data infrastructure that is aimed at decreasing this barrier to entry. Our evaluation that uses over two dozen research questions from six categories show that research is easier to realize as a BoaT computer program, an order of magnitude faster when this program is run, and exhibits 12-14x decrease in storage requirements

Dynamic Organizations: Achieving Marketplace Agility Through Workforce Scalability

Dynamic organizations (DOs) operate in business environments characterized by frequent and discontinuous change, They compete on the basis of marketplace agility; that is on their ability to generate a steady stream of both large and small innovations in products, services, solutions, business models, and even internal processes that enable them to leapfrog and outmaneuver current and would-be competitors and thus eke out a series of temporary competitive advantages that might, with luck, add up to sustained success over time. Marketplace agility requires the ongoing reallocation of resources, including human resources. We use the term workforce scalability to capture the capacity of an organization to keep its human resources aligned with business needs by transitioning quickly and easily from one human resource configuration to another and another, ad infinitum. We argue that marketplace agility is enhanced by workforce agility because it is likely to meet the four necessary and sufficient conditions postulated by the resource based view (RBV) of the firm – valuable, rare, inimitable, and non-substitutable – if it can be attained. Our analysis therefore concludes by focusing on the two dimensions of workforce scalability – alignment and fluidity – and postulating a number of principles that might be used to guide the design of an HR strategy that enhances both. Throughout the paper, key concepts are illustrated using the experiences of Google, the well-known Internet search firm. Because the analysis is speculative and intended primarily to pique the interest of researchers and practitioners, the paper ends with a number of important questions that remain to be clarified

Open and Distance Learning for Basic Education in South Asia: its potential for hard-to-reach children and children in conflict and disaster areas: Bangladesh and Sri Lanka Country Studies

These are the country studies for the UNICEF funded project which explores the ways in which, in Bangladesh and Sri Lanka various forms of open and distance learning could be developed to better meet the needs of marginalised children and those affected by natural disaster (Bangladesh) and by conflict (Sri Lanka)