MCI Inc.

About: MCI Inc. is a based out in . It is known for research contribution in the topics: The Internet & Haptic technology. The organization has 10 authors who have published 12 publications receiving 1719 citations. The organization is also known as: WorldCom & MCI WorldCom.

Delay-tolerant networking: an approach to interplanetary Internet

Abstract: Increasingly, network applications must communicate with counterparts across disparate networking environments characterized by significantly different sets of physical and operational constraints; wide variations in transmission latency are particularly troublesome. The proposed Interplanetary Internet, which must encompass both terrestrial and interplanetary links, is an extreme case. An architecture based on a "least common denominator" protocol that can operate successfully and (where required) reliably in multiple disparate environments would simplify the development and deployment of such applications. The Internet protocols are ill suited for this purpose. We identify three fundamental principles that would underlie a delay-tolerant networking (DTN) architecture and describe the main structural elements of that architecture, centered on a new end-to-end overlay network protocol called Bundling. We also examine Internet infrastructure adaptations that might yield comparable performance but conclude that the simplicity of the DTN architecture promises easier deployment and extension.

ATM: Theory and Application

Abstract: From the Publisher: The most current,most complete,and most "real-world" guide ever on ATM! This landmark reference is the ultimate "in print" database of ATM technology,services,and applications From basic principles to detailed real-world examples,this text has it all,including exclusive in-depth treatment of such "hot" new protocols as IP and Tag Switching,Private Network Network Interface (PNNI),LAN Emulation (LANE),Understandable View of ATM Signaling,MultiProtocol Over ATM (MPOA),Available Bit rate (ABR) flow control,and Internet ReSerVation Protocol (RSVP) Traffic engineering and network design considerations are also extensively explained and illustrated This is a must-have reference that will substantially enable any reader to make smarter technological and strategic business decisions regarding virtually every aspect of how,where,and why to apply ATM The most current,most complete,and most "real world" guide ever on ATM This landmark reference is the ultimate "in print" database of ATM technology,services,and applications Emphasizing practice over theory in an engaging,fun-to-read style,the authors present high-level summaries followed up with detailed treatment of all key areas of ATM technology It is the only book that provides in-depth treatment of such "hot" new protocols as: IP and Tag Switching Private Network Network Interface (PNNI) LAN Emulation (LANE) Understandable View of ATM Signaling Multiprotocol Over ATM (MPOA) Available Bit Rate (ABR) flow control Internet ReSerVation Protocol (RSVP) In addition,ATM Theory and Applications explores the remarkable range of ATM applications,objectively comparesATM with competing technologies,and even offers some provocative predictions about how ATM technology might evolve "This update to our best selling book not only provides a working tool for someone wanting to learn ATM,but also provides a reference for the practicing professional applying real-world solutions to business and technology problems "

Spam, spim, and spit

Abstract: Abolishing spam, and its morphing forms, will take more than public protest and current filtering and legislative quick fixes.

Head-Mounted Sensory Augmentation Device: Comparing Haptic and Audio Modality

Abstract: This paper investigates and compares the effectiveness of haptic and audio modality for navigation in low visibility environment using a sensory augmentation device. A second generation head-mounted vibrotactile interface as a sensory augmentation prototype was developed to help users to navigate in such environments. In our experiment, a subject navigates along a wall relying on the haptic or audio feedbacks as navigation commands. Haptic/audio feedback is presented to the subjects according to the information measured from the walls to a set of 12 ultrasound sensors placed around a helmet and a classification algorithm by using multilayer perceptron neural network. Results showed the haptic modality leads to significantly lower route deviation in navigation compared to auditory feedback. Furthermore, the NASA TLX questionnaire showed that subjects reported lower cognitive workload with haptic modality although both modalities were able to navigate the users along the wall.

Comparison of Tactile Signals for Collision Avoidance on Unmanned Aerial Vehicles

Abstract: Our recent work focused on the development of intuitive user interfaces for the control of unmanned aerial vehicles, such as quadcopters. Next to intuitive gesture control, a key challenge with remotely operated quadcopters is the display of information about the aircraft surroundings. To this end, we examined the use of rendering tactile stimuli to warn about nearby obstacles. Directional information and distance is encoded via vibrotactile signals from rotating mass motors. Three different methods of delivering the tactile feedback were tested in a user study. Results show that even though participants guided the quadcopter through a maze by tactile stimuli alone, they were, on average, able to avoid full crashes. Further, we found that using sequential signals to indicate obstacles lead to significantly increased numbers of wall contacts.