This paper concerns power allocation in relay-assisted wireless channels for two-hop transmission. First, the transmitter sends the information to both the relay and receiver parts. Next, in the second hop, the transmitter cooperates with the relay to increase the received signal to noise ratio (SNR), assuming the relay makes use of the Amplify and Forward (AF) strategy. Moreover, it is assumed...

Constraints, in various forms, are ubiquitous to design problems. In this paper, we provide a formal characterization of a generalized constraint satisfaction problem (CSP) that can be used to model many types of design/planning problems, and the architecture of an imlemented reasoning system for solving this problem. The architecture includes a truth maintenance system (TMS) which is specifica...

This paperpresents a new approach for exploiting Truth Maintenance Systems(TMSs in which the inference engine can convey locality in its knowledge to the TMS . This approach is ideally suited for systems which reason about the physical world because much of knowledge is inherently local, i .e ., the constraints for a particular component or process usually only interact with constraints of phys...

This study evaluated micro-credit programmes of six leading NGOs/MFIs (BRAC, Grameen Bank, PROSHIKA, ASA, SSS and TMSS) in terms of the clients’ views towards the programmes. The objective of this project is to develop a selection criterion to identify the efficient programme. A total of 406 members from the selected NGOs/MFIs operating micro-credit programmes in Dhaka, Mymensingh, Sherpur, Net...

s&ract Multiple possible solutions can arise in many domains, such as scene interpretation and speech recognition. This paper examines the eficiency of multiplecontext TM%, such as the ATMS, in solving a scene representation problem which we call the Vision Constraint Recognition problem. The ATMS has been claimed to be quite eficient for solving problems with multiple possible solutions, even ...

Mining can be the source and target of opportunities threats different natures exceeding mine site perimeter, affecting socio-ecological system leading to social conflicts entrepreneurial risks for mining companies. Hence, a project is matter land planning rather than simple industrial object. Nevertheless, current mandatory risk impact assessment methods are often performed on one at time, neg...

in this paper two different rateless transmissionschemes are developed. in the proposed scheme, relay node candecode and forward the message to the destination if they areable to decode it, or amplify and forward the message to thedestination. based on the analysis and simulation resultsprovided in this paper, the proposed method has bettertransmission time than the scheme which only the relay ...

Widespread commercialization of high-energy-density lithium–sulfur (Li–S) batteries is difficult due to the lithium polysulfide, Li2Sn (n = 4, 6, 8), shuttle effect. Efficient adsorption/conversion species on an electrocatalytic surface can suppress Modeling adsorption using density functional theory (DFT) calculations has contributed significantly toward understanding their anchoring mechanism...

The delicate integration of carbonaceous scaffolds and transition metal sulfides (TMSs) has recently achieved a series positive results in supercapacitors. However, these hybrids usually suffer from weak compatibility combination at the heterogeneous interface, leading to peeling TMSs capacity fading electrodes during long-term charge/discharge processes. Herein, facile scalable in-situ sulfida...

The aim of the relay coordination is that protection systems detect and isolate the faulted part as fast and selective as possible. On the other hand, in order to reduce the fault clearing time, distance protection relays are usually equipped with pilot protection schemes. Such schemes can be considered in the distance and directional overcurrent relays (D&DOCRs) coordination to achieve faster ...