Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 421 for “"RAM"”.
-
Unified RAW Path Oblivious RAM
Oblivious RAM (ORAM) is a cryptographic primitive that conceals memory access patterns to untrusted storage. Its applications include oblivious cloud storage, trusted processors, software protection, secure multi-party computation, and so on. This thesis improves the state-of-the-art Path ORAM in …
-
Optimal Oblivious RAM with Integrity
Oblivious RAM (ORAM), introduced by Goldreich and Ostrovsky (J. ACM ’96), is a protocol that allows a client to perform RAM computations on a server without revealing any information about the underlying data, even via the access pattern. For a memory of size N, well-known lower bounds show that a …
-
Oblivious RAM in Scalable SGX
… (TEEs) have been introduced to protect program execution and data in the cloud. However, an attacker targeting the cloud storage server through side-channel attacks can still learn some data in TEEs. This data retrieval is possible through the monitor- ing and analysis of the encrypted …
-
Cheetah: An Economical Distributed RAM Drive
… we explore the use of available distributed RAM resources to effectively replace a mechanical hard drive. The essential approach is a distributed Linux block device that spreads its blocks throughout spare RAM on a cluster and transfers blocks using network capacity. The presented solution is …
-
Ram pressure correlations for aspirated cylinders
… or dynamic pressure induced flow through a parameter known as the ram coefficient. The investigation utilized an aspirated cylinder in cross-flow as an idealized representation of an automobile front end with grille openings. The pressure distribution on the upstream side of the cylinder model …
-
Oblivious RAM : from theory to practice
… can be used to reverse-engineer proprietary programs as they run, reveal a user's physical location or health information, and more, even if data is correctly encrypted. This thesis studies a cryptographic primitive called Oblivious RAM (ORAM) which provably hides a client's access pattern as …
-
Succinct garbled RAM from indistinguishablity obfuscation
… construction of a succinct garbling scheme for RAM programs. For a program requiring space S and time T to compute, the size of its garbling is Õ(S) instead of poly(T). This construction relies on the existence of indistinguishability obfuscation, as well as the existence of injective one-way …
-
Ram performance testing programs in Virginia
Prices paid for yearling rams were influenced (P < .001) by TSC, BT, YW and FW. The importance of YW increased with time, while the role of TSC declined in later time periods, suggesting that buyers were willing to pay more for superior performance and less for subjective conformation and type in …
-
Analysis of the Mechanically Choked Ram Accelerator
The ram accelerator is a hypervelocity launch concept which uses a ramjet-like propulsive cycle to accelerate a projectile to hypersonic velocities. Research surrounding this technology has thus far been primarily focused on the thermally choked mode of operation, which relies on acceleration to …
-
Aghoreshwar Bhagawan Ram and the Aghor Tradition
<p>Aghoreshwar Mahaprabhu Baba Bhagawan Ram Ji, a well-established saint of the holy city of Varanasi in north India, initiated many changes into the erstwhile Aghor tradition of ascetics in India. This tradition is regarded as an ancient system of spiritual or mystical knowledge by its …
-
Ram-jet combustion based on shock/flame interaction
An experimental investigation into the effects of shock/wake and shock/flame interaction on the base pressure of axisymmetric bodies at Mach 2 has been carried out. This investigation has determined the effects of various forms of shock generator (axisymmetric cowls, twodimensional wedges and …
-
Preliminary Test Predictions for Scale Ram-Air Parachute Testing
… performance for experimental tests of ram-air parachutes in a wind tunnel. A scaled experimental test setup is developed for determining the aerodynamic coefficients of lift (𝐶𝐿) and drag (𝐶𝐷) conducted in a wind tunnel. Additionally, a CFD approach where a steady-state parachute shape …
-
Ram air turbine enhancement for auxiliary power unit replacement
… undesired emissions, and noise. In this project, ram air turbine (RAT), which are already equipped in aircraft, was enhanced to generate the amount of energy produced by APU. Two approaches were adopted in order to achieve the goal. The number of RAT units in the aircraft body were increased, and …
-
Energy Efficient Computing in FPGA Through Embedded RAM Blocks
… memory blocks in a heterogeneous mapping framework that aims at maximizing energy efficiency. Complex operations are decomposed / fused into large multi-input multi-output look-up tables, mapped into EMBs and evaluated through sequential access of them. Optimal energy configuration of the …
-
Factors affecting preservation of liquid and frozen ram spermatozoa
… and 2 vividly demonstrates the vulnerability of ram spermatozoa to the stress of freeze-thawing. When ram spermatozoa were subjected to freeze-thaw stress, there was more variation among treatments reflected in maintenance of both intact acrosomes and motile life (Experiment 2, Table 9) than when …
-
Transient Computational Fluid Dynamic Modeling of Baffled Tube Ram Accelerator
… fluid dynamic modeling in laboratory frame of reference was used to investigate baffled tube ram accelerator operating characteristics in inert and reactive mixtures. The minimum entrance Mach number that allowed supersonic projectile transit through a baffled tube filled with inert gas …
-
Design of control electronics for the Ram Energy Distribution Detector
… disrupt high frequency radio communications. A ram wind sensor is a space science instrument that, when mounted on a satellite in low-Earth orbit, makes in-situ measurements of the component of the neutral gas velocity that lies along the orbit track of the satellite. The instrument works by …
-
Advances in Baffled and Railed Tube Ram Accelerator Operation and Modeling
The ram accelerator is a novel chemical propulsion device capable of accelerating projectiles up to orbital velocities. It utilizes a ramjet-like propulsive cycle, where a projectile travels through a stationary tube filled with a gaseous propellant, experiencing high levels of thrust throughout …
Page 1 of 22