Página 7 dos resultados de 100905 itens digitais encontrados em 0.158 segundos

‣ Regions Security Policy (RSP) : applying regions to network security; RSP : applying regions to network security

Baratz, Joshua W. (Joshua William), 1981-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 65 p.; 3243771 bytes; 3243575 bytes; application/pdf; application/pdf
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The Regions network architecture is a new look at network organization that groups nodes into regions based on common purposes. This shift from strict network topology groupings of nodes requires a change in security systems. This thesis designs and implements the Regions Security Policy (RSP). RSP allows a unified security policy to be set across a region, fully controlling data as it enters into, exits from, and transits within a region. In doing so, it brings together several existing security solutions so as to provide security comparable to existing systems that is more likely to function correctly.; by Joshua W. Baratz.; Thesis (M. Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.; Includes bibliographical references (p. 51-54).

‣ Implementation of a list processing machine

Knight, Thomas F
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 162 [i.e. 161] leaves; 9399202 bytes; 9398959 bytes; application/pdf; application/pdf
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by Thomas F. Knight, Jr.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1979.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING; Bibliography: leaves 49-50.

‣ Inspection methods in programming

Rich, Charles
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 303 leaves; 27806769 bytes; 27806529 bytes; application/pdf; application/pdf
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by Charles Rich.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1980.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 294-297. Includes index.

‣ A unified theory of flow control and routing in data communication networks

Golestaani, Seyyed Jamaaloddin
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 94 leaves; 5064620 bytes; 5064383 bytes; application/pdf; application/pdf
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by Seyyed Jamaaloddin Golestaani.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1980.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Includes bibliographical references.

‣ Procedural reflection in programming languages

Smith, Brian Cantwell
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 3 vol. (761 leaves); 64704430 bytes; 64704183 bytes; application/pdf; application/pdf
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by Brian Cantwell Smith.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 756-761.

‣ Design and analysis of a memory hierarchy for a very high performance multiprocessor configuration

Tick, Evan Michael
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 212 p.; 11927075 bytes; 11926835 bytes; application/pdf; application/pdf
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by Evan Michael Tick.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Vita.; Bibliography: p. 204-221.

‣ Locality principles and the acquisition of syntactic knowledge

Berwick, Robert Cregar
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 2 v. (451 leaves); 37065697 bytes; 37065457 bytes; application/pdf; application/pdf
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by Robert Cregar Berwick.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 439-451.

‣ Design and measurement of a reconfigurable multi-microprocessor machine

Zukowski, Charles
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 156 leaves; 8382087 bytes; 8381842 bytes; application/pdf; application/pdf
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by Charles Zukowski.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING; Includes bibliographical references.

‣ Investigation of the electron transport and electrostatics of nanoscale strained Si/Si/Ge heterostructure MOSFETs

Nayfeh, Hasan M. (Hasan Munir), 1974-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 179 p.; 10235229 bytes; 10234990 bytes; application/pdf; application/pdf
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This thesis presents work aimed at investigating the possible benefit of strained-Si/SiGe heterostructure MOSFETs designed for nanoscale (sub-50-nm) gate lengths with the aid of device fabrication and electrical measurements combined with computer simulation. MOSFET devices fabricated on bulk-Si material are scaled in order to achieve gains in performance and integration. However, as device dimensions continue to scale, physical constraints are being reached that may limit continued scaling and/or the gains in performance from scaling. In order to continue the benefits of scaling, a possible solution is to change to a strained-Si/SiGe material system where enhanced electron mobility of 1.7-2X has been demonstrated for long-channel n-type devices. The electron mobility enhancement observed for long channel length devices may not be the same for devices with nanoscale gate length. In particular, increased channel doping, which is required to control short-channel effects can result in degraded transport characteristics. In this work, the impact of high channel doping on mobility enhancements in strained-Si n-MOSFETs is investigated experimentally. Increased channel doping will increase Coulomb scattering interactions increasing its influence on the overall mobility. Electron transport models were calibrated using experimental data for both strained and un-strained Si devices for various channel doping concentrations. The transport models were then used to investigate...

‣ A personalized, interactive movie manual

Correa, John Carlos
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 27, [2] leaves, 4 leaves of plates (col.); 1728236 bytes; 1729491 bytes; application/pdf; application/pdf
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by John Carlos Correa.; Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: 2 unnumbered leaves following text.

‣ Implementing a window system for an all points addressable display

Gonzalez, John Cambell
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 53 leaves; 3085774 bytes; 3090141 bytes; application/pdf; application/pdf
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by John Cambell Gonzalez.; Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING; Bibliography: leaves 52-53.

‣ The Curl Graphics2d immediate mode rendering API; Curl Graphics 2d immediate mode rendering API

McGuire, Morgan, 1976-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 69 leaves; 4072575 bytes; 4079339 bytes; application/pdf; application/pdf
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(cont.) 170 thousand lines of code in the Curl language. Morgan McGuire has worked on computer graphics and imaging at Morgan Systems, the NEC Research Institute and the IBM T. J. Watson Research Center. He is currently employed by Curl Corporation as senior architect of the computer graphics group.; The Curl Graphics2d API (Graphics2d) is a 2d immediate mode rendering API for the Curl Internet content language. The unique capabilities of the Curl language enable the API to take the form of a graphics language rather than a simple library of routines. This graphics language offers a basis set of primitives and an extension mechanism that allows 2d and 3d graphics without sacrificing performance. Graphics2d attempts to achieve minimalist simplicity by identifying fundamental concepts in 2d rendering and representing each of those concepts with a single interface class or method. These interfaces may be implemented by user (parties outside of Curl, possibly executing untrusted code) code to interact with other modules built to the API. However, user code will typically use the implementation provided with Curl to build graphics intense applications rather than extending the API directly. As with any large API, the philosophy and crucial design points comprise the essence of Graphics2d...

‣ A melody description system for jazz improvisation

Levitt, David Alex
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 47 leaves; 3384271 bytes; 3384584 bytes; application/pdf; application/pdf
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by David Alex Levitt.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 45-47.

‣ Reptile : a distributed ILP compiler; Raw Explicitly Parallel Tile Compiler : a distributed Instruction Level Parallelism compiler

Bratt, Ian (Ian R.)
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 71 p.; 3837083 bytes; 3839629 bytes; application/pdf; application/pdf
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The past few years witnessed a dramatic shift in computer microprocessor design. Rather than continue with the traditional pursuit of increased sequential program performance, industry and academia alike chose to focus on distributed, multi-core designs. If multi-core designs are to maintain the decades-long trend of increased single threaded performance, compiler technology capable of converting a single threaded program into multiple programs must be developed. In this thesis I present the Raw Explicitly Parallel Tile Compiler (Reptile), a compiler targeting the RAW computer architecture capable of converting a single threaded program into multiple threads communicating at the instruction operand granularity. On applications with sufficient amounts of parallelism Reptile has generated code which, on the Raw processor, achieves a speedup of as much as 2.3x (cycle to cycle) over an Athlon64.; by Ian Bratt.; Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2005.; Includes bibliographical references (p. 69-71).

‣ General linear cameras : theory and applications; GLC : theory and applications

Yu, Jingyi, 1978-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 149 leaves
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I present a General Linear Camera (GLC) model that unifies many previous camera models into a single representation. The GLC model describes all perspective (pinhole), orthographic, and many multiperspective (including pushbroom and two-slit) cameras, as well as epipolar plane images. It also includes three new and previously unexplored multiperspective linear cameras. The GLC model is general and linear in the sense that, given any vector space where rays are represented as points, it describes all 2D affine subspaces (planes) formed by the affine combination of 3 rays. I also present theories of projection and collineation for GLCs and use these theories to explain various multiperspective distortions. Given an arbitrary multiperspective imaging system that captures smoothly varying set of rays, I show how to map the rays onto a 2D ray manifold embedded into a 4D linear vector space. The GLC model can then be use to analyze the tangent planes on this manifold. Geometric structures associated with the local GLC model of each tangent plane provide an intuitive physical interpretation of the imaging system, and they are closely related to the caustics of reflected rays. These geometric structures are characteristic of only 4 of the 8 GLC types. I also prove that the local GLC type at each tangent plane is invariant to the choice of parametrization...

‣ Diastolic arrays : throughput-driven reconfigurable computing

Cho, Myong Hyon, Ph. D. Massachusetts Institute of Technology
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 70 leaves
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In this thesis, we propose a new reconfigurable computer substrate: diastolic arrays. Diastolic arrays are arrays of processing elements that communicate exclusively through First-In First-Out (FIFO) queues, and provide hardware support to guarantee bandwidth and buffer space for all data transfers. FIFO control implies that a module idles if its input FIFOs are empty, and stalls if its output FIFOs are full. The timing of data transfers between processing elements in diastolic arrays is therefore significantly more relaxed than in systolic arrays or pipelines. All specified data transfers are statically routed, and the routing problem to maximize average throughput can be optimally or near-optimally solved in polynomial time by formulating it as a maximum concurrent multicommodity flow problem and using linear programming. We show that the architecture of diastolic arrays enables efficient synthesis from high-level specifications of communicating finite state machines, providing a high-performance, off-the-shelf computer substrate that can be easily programmed.; by Myong Hyon Cho.; Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2008.; Includes bibliographical references (leaves 67-70).

‣ Improving driving training with a handheld performance support system

Liu, Xia, M. Eng. Massachusetts Institute of Technology
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 1, [38] p.
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The handheld computer Driver Trainer application is an element of a new training program by the transportation company to improve the safety of new truck drivers. Its aim is to aid trainers objectively evaluate truck drivers in the on-the-road driving portion of the newly planned training centers using the custom handheld device. The application will automate part of the evaluation process by using Telematics data to find driver mistakes, and to simplify the recording process for non-telematics related incidents. This thesis discusses the design of the support system and the interface of the handheld computer application.; by Xia Liu.; Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.; Includes bibliographical references (p. [39]).

‣ Decentralized information flow control on a cluster

Cliffer, Natan Tsvi Cohen
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 54 p.
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Information flow control security models can prevent programs from divulging sensitive information in unexpected ways. There has been significant work on tracking information flow between processes in the same computer at the operating system level. I present a modification to the Flume information flow control system for OpenBSD that allows information flow to be tracked between programs on different computers, as long as the system software on all involved computers is maintained by the same trusted entity. This allows the benefits of Flume to be applied to computer systems that take the cluster approach to scaling.; by Natan Tsvi Cohen Cliffer.; Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2007.; Includes bibliographical references (p. 53-54).

‣ A wireless communication system for a tactile vest

Lockyer, Brett J. (Brett James), 1980-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 101 leaves; 5507293 bytes; 5519023 bytes; application/pdf; application/pdf
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This research focuses on the development of wireless communication circuitry for a tactile display called the Tactile Vest. The display consists of a 4x4 array of vibrating motors worn around the user's torso in direct contact with the skin. It allows an operator with a notebook computer to issue navigational commands wirelessly to units in the vicinity and receive transmissions from them regarding their status. Each command is associated with a pattern of vibratory stimulation to which the user responds. The Tactile Vest system must be durable, lightweight, and consume very little power since it will be worn by mobile users for extended periods. The complete circuit design process is described, from initial prototype development to final layout and testing. A graphical user interface for the notebook computer, written in Visual Basic .NET, is also presented.; by Brett J. Lockyer.; Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2004.; Includes bibliographical references (leaves 53-54).

‣ Mockingbird : an interactive composer's aid

Maxwell, John Turner
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 122 leaves; 10380056 bytes; 10379817 bytes; application/pdf; application/pdf
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by John Turner Maxwell III.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Includes bibliographical references.