Results 1 - 10 of 367

Mutichannel MAC Protocols for Wireless Networks

by Ritesh Maheshwari, Himanshu Gupta, Samir R. Das - In SECON , 2006
"... Abstract — In this paper, we develop two new MAC protocols for multichannel operation in wireless ad hoc and mesh networks. The first protocol, Extended Receiver Directed Transmission protocol (xRDT) is based on a previously known multichannel solution called Receiver Directed Transmission (RDT) tha ..."
Abstract - Cited by 37 (1 self) - Add to MetaCart
) that uses a notion of quiescent channel. xRDT solves the problems faced by RDT, such as multichannel hidden terminal and deafness, by using an additional busy tone interface and few additional protocol operations. We also develop a novel single interface solution, called Local Coordination

An Improved Adaptive Background Mixture Model for Realtime Tracking with Shadow Detection

by P. Kaewtrakulpong, R. Bowden , 2001
"... Real-time segmentation of moving regions in image sequences is a fundamental step in many vision systems including automated visual surveillance, human-machine interface, and very low-bandwidth telecommunications. A typical method is background subtraction. Many background models have been introduce ..."
Abstract - Cited by 225 (4 self) - Add to MetaCart
introduced to deal with different problems. One of the successful solutions to these problems is to use a multi-colour background model per pixel proposed by Grimson et al [1,2,3]. However, the method suffers from slow learning at the beginning, especially in busy environments. In addition, it can

Providing Database as a Service

by Hakan Hacigumus, Bala Iyer, Sharad Mehrotra - In Proc. of ICDE , 2002
"... In this paper, we explore a new paradigm for data management in which a third party service provider hosts "database as a service" providing its customers seamless mechanisms to create, store, and access their databases at the host site. Such a model alleviates the need for organizations t ..."
Abstract - Cited by 222 (5 self) - Add to MetaCart
management model supported by NetDB2 provides an effective mechanism for organizations to purchase data management as a service, thereby freeing them to concentrate on their core businesses. Among the primary challenges introduced by "database as a service" are additional overhead of remote access

Curing the menu blues in touch-tone voice interfaces

by Bernhard Suhm, Barbara Freeman, David Getty - ACM CHI Conference on Human Factors in Computing Systems (Extended Abstracts , 2001
"... This paper presents a study on touch-tone menu design. In particular, we investigated whether short or long menus route callers more efficiently to the destination that can handle the call. A short menu offers a small number of broad selections, while a long menu offers a larger number of more speci ..."
Abstract - Cited by 6 (0 self) - Add to MetaCart
specific choices. Results obtained from thousands of live calls to a commercial customer service center, show that callers route themselves more effectively using the long menu. In addition, in complex voice interfaces, using long menus reduces the number of menu layers required, thus reducing the need

Abstract { The Dual Busy Tone Multiple Access

by Zygmunt J. Haas, Jing Deng, Siamak Tabrizi
"... (DBTMA) scheme was designed for decentralized multi-hop networks. In DBTMA, the RTS/CTS di-alogue is used to reserve the channel. In addition, two busy tones are employed to eliminate collisions between the RTS/CTS control packets and DATA packet transmissions. DATA packet collisions can seriously d ..."
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(DBTMA) scheme was designed for decentralized multi-hop networks. In DBTMA, the RTS/CTS di-alogue is used to reserve the channel. In addition, two busy tones are employed to eliminate collisions between the RTS/CTS control packets and DATA packet transmissions. DATA packet collisions can seriously

Speech vs. Touch-tone: Telephony Interfaces for Information Access by Low Literate Users

by n.n. , 2008
"... Information access by low literate users is a hard problem. Critical information, such as in the field of healthcare, can often mean the difference between life and death. In our research, we have developed and tested various spoken language interface prototypes with low literate community health w ..."
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worker. In this paper, we present results from our research that show that well-designed speech interfaces are preferable to touch-tone equivalents. Additionally, we show that it is especially important to localize the system’s spoken language output for low literate users.

Simple and Generic Tone Generator for IP Phone

by M Senthil Kumar , Director P Chandra Sekhar , M Nathan , Aditya Chebiyyam
"... ABSTRACT IP Phones need to handle Call Progress Tones (CPT) generation to provide an audible indication of the state of the call similar to the PSTN phone. Additionally, in case of systems having a keypad interface, DTMF tones need to be generated based on the key activated, either during call setu ..."
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ABSTRACT IP Phones need to handle Call Progress Tones (CPT) generation to provide an audible indication of the state of the call similar to the PSTN phone. Additionally, in case of systems having a keypad interface, DTMF tones need to be generated based on the key activated, either during call

A MAC Protocol to Reduce Sensor Network Energy Consumption Using a Wakeup Radio

by Matthew J. Miller, Nitin H. Vaidya - IEEE Transactions on Mobile Computing
"... Abstract — For increasing the life of sensor networks, each node must conserve energy as much as possible. In this paper, we propose a protocol in which energy is conserved by amortizing the energy cost of communication over multiple packets. In addition, we allow sensors to control the amount of bu ..."
Abstract - Cited by 80 (3 self) - Add to MetaCart
of buffered packets since storage space is limited. To achieve this, a two-radio architecture is used which allows a sensor to “wakeup ” a neighbor with a busy tone and send its packets for that destination. However, this process is expensive because all neighbors must awake and listen to the primary channel

The Modern Call Center: A Multi-Disciplinary Perspective on Operations Management Research

by Zeynep Aksin, Mor Armony, Vijay Mehrotra
"... Call centers are an increasingly important part of today’s business world, employing millions of agents across the globe and serving as a primary customer-facing channel for firms in many different industries. Call centers have been a fertile area for operations management researchers in several dom ..."
Abstract - Cited by 86 (0 self) - Add to MetaCart
Call centers are an increasingly important part of today’s business world, employing millions of agents across the globe and serving as a primary customer-facing channel for firms in many different industries. Call centers have been a fertile area for operations management researchers in several

Business Administration

by Dincer Caner, Dincer Banu
"... In todays business world, in addition to general decisions, managers must also make judgments concerning what is ethical to do. This is not an easy task especially for marketing professionals as marketing is the visible interface with not only customers, but with all other stakeholders, it is import ..."
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In todays business world, in addition to general decisions, managers must also make judgments concerning what is ethical to do. This is not an easy task especially for marketing professionals as marketing is the visible interface with not only customers, but with all other stakeholders
Results 1 - 10 of 367