WorldCat Identities

Carnegie-Mellon University Information Technology Center

Overview
Works: 113 works in 113 publications in 1 language and 119 library holdings
Publication Timeline
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Most widely held works by Carnegie-Mellon University
Synchronization and caching issues in the Andrew file system by Michael Leon Kazar( Book )
1 edition published in 1988 in English and held by 2 WorldCat member libraries worldwide
IPwatch : a tool for monitoring network locality by Mark J Lorence( Book )
1 edition published in 1988 in English and held by 2 WorldCat member libraries worldwide
In this paper we introduce the concepts of Logical and Physical Network Locality and point out their importance to the performance of distributed systems. We then describe the design of IPwatch, a simple and inexpensive tool for monitoring logical network locality. IPwatch exploits short-term locality to enable monitoring of medium- and long-term locality of large networks using modest computational resources. We describe experiments at Carnegie Mellon University to validate our ideas and to calibrate IPwatch. The results confirm the existence of substantial short-term locality in this environment. Less than 5 percent of the possible host pairs account for 75 percent of the traffic, and less than 15 percent of them account for 90 percent. Comparative measurements on another network in our environment show even stronger short-term locality
Distributed multimedia : how can the necessary data rates be supported? by M Pasieka( Book )
1 edition published in 1991 in English and held by 2 WorldCat member libraries worldwide
Abstract: "At the Information Technology Center at Carnegie Mellon University, we have been developing a system in which it is possible to deliver data to a presentation machine from a remote machine across a public network at a sustained high rate. We have called this system a Continuous Time Media System (CTMS). We have found that the UNIX model used for transfer of data between two devices, the network transport protocols, and the ability of adapters to transfer data between themselves are insufficient to do this. We have made modifications to each of these system [sic] in order to create a prototype system that we can measure to help define a CTMS protocol. We present the results of this work in this paper."
Multimedia data formats : issues and instances by Michael McInerny( Book )
1 edition published in 1991 in English and held by 2 WorldCat member libraries worldwide
Abstract: "Multimedia data formats are the permanent representation of a multimedia document and thus encode the information in that document. Users are limited in their expression ultimately by what the data format permits the application to store. Therefore, it behooves the system designer to be aware of the issues involved in creating and using data formats. This paper sketches some of the user requirements of multimedia, discusses the variety of issues concerning data formats (both common and media specific), and examines a few key formats in use today."
An introduction to object-oriented databases and database systems by M. L Horowitz( Book )
1 edition published in 1991 in English and held by 2 WorldCat member libraries worldwide
Abstract: "Recent developments in editing applications, especially in the areas of CAD/CAM and multimedia, have provoked interest in integrating the data abstraction capabilities of object-oriented languages with the persistence and concurrency control of database systems. Database systems assume the task of determining the file storage format for the application. In addition, such systems provide support for concurrency control, atomicity of multiple updates, recoverability, authorization, versioning, and search (i.e. associative access). Sophisticated editing applications, however, require better data modeling capabilities than those normally provided by existing database systems (i.e. those presenting a relational or network data model). Thus, an impedance mismatch exists between the way databases view application data and how the application wishes to manipulate that data. A database system that supports an object-oriented data model would eliminate this impedance mismatch and furnish the desired modeling capabilities: object identity, direct access, data abstraction extensibility, inheritance, polymorphism, genericity, encapsulation, embedded semantics, and data type extensibility. Integrating object-oriented concepts and normal database concepts also presents the opportunity to explore new features that would help application builders: object composition, property propagation, cyclic queries, indexing extensibility, relationship support, database self-containment, and schema evolution. This paper presents a summary of current database research into new data models based on object-oriented concepts. The concepts themselves are defined and then the different systems are described."
Design and specification of the cellular Andrew environment by Edward R Zayas( Book )
1 edition published in 1988 in English and held by 2 WorldCat member libraries worldwide
Equivalence classes among pentomino tilings of the 6x10 rectangle by Wilfred J Hansen( Book )
1 edition published in 1991 in English and held by 2 WorldCat member libraries worldwide
Abstract: "Although there are 2339 pentomino tilings of the 6 x 10 rectangle, many pairs of solutions are similar. We show that the solutions can be divided into 911 equivalence classes by the similarity transformations: rotate or reflect a subset of the pieces, interchange two congruent subsets, rearrange two pieces. Early steps of the computation utilize the standard 'polar' representation of solutions to rapidly determine the differences between two solutions. Next the pieces that differ are checked to see if they all are transformed the same in transition from one solution to the other; this trick substantially reduces the computation. Later steps manipulate bit mask representations of shapes and rely for speed on special data arrays to reflect a column at a time."
The C-MU PC server project by Larry K Raper( Book )
1 edition published in 1986 in English and held by 2 WorldCat member libraries worldwide
Unix facilities for Andrew by David S. H Rosenthal( Book )
1 edition published in 1985 in English and held by 1 WorldCat member library worldwide
The Andrew Toolkit : an overview ( Book )
1 edition published in 1988 in English and held by 1 WorldCat member library worldwide
MultiRPC : a parallel remote call mechanism by M Satyanarayanan( Book )
1 edition published in 1986 in English and held by 1 WorldCat member library worldwide
The design and maintenance of the Andrew Help system : providing a large set of information to a large community of users by Ayami Ogura( Book )
1 edition published in 1990 in English and held by 1 WorldCat member library worldwide
Data communications at Carnegie-Mellon University by John Leong( Book )
1 edition published in 1985 in English and held by 1 WorldCat member library worldwide
RPC2 user manual by M Satyanarayanan( Book )
1 edition published in 1985 in English and held by 1 WorldCat member library worldwide
Social dynamics, or scientific truth, or sheer human cussedness : design decisions in the evolution of the Andrew user interface by Christina Haas( Book )
1 edition published in 1990 in English and held by 1 WorldCat member library worldwide
The CT reference manual by Judith N Sherwood( Book )
1 edition published in 1986 in English and held by 1 WorldCat member library worldwide
A large-parameter remote procedure call mechanism in Unix by M Satyanarayanan( Book )
1 edition published in 1984 in English and held by 1 WorldCat member library worldwide
White paper : a high level virtual machine by James Gosling( Book )
1 edition published in 1983 in English and held by 1 WorldCat member library worldwide
The CMU tutor language : preliminary edition by Bruce Arne Sherwood( Book )
1 edition published in 1986 in English and held by 1 WorldCat member library worldwide
Network data access by Mark Steven Sherman( Book )
1 edition published in 1990 in English and held by 1 WorldCat member library worldwide
Abstract: "In this paper, we describe system requirements for allowing access to heterogeneous, preformatted data in a network environment. The system is based on providing an abstract description of data formats and data transformations in a way that data providers, data consumers and format converters may coexist tha [sic] cooperate on a network using a variety of hardware."
 
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Alternative Names
Carnegie Mellon University Information Technology Center
CMU-ITC
IBM Corporation Information Technology Center
ITC
Languages
English (20)