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Bose-Einstein Condensation In A Double-Well System, Jesus Caloca
Bose-Einstein Condensation In A Double-Well System, Jesus Caloca
College of Arts and Sciences Presentations
The two-site version of the Bose-Hubbard model can be used as a simplified model of N bosons confined to two quantum wells. We study the behavior of low-temperature Bose-Einstein condensates as a function of the strength of the repulsive interactions between the bosons and of the size of the quantum-mechanical tunneling between the quantum wells. The ground-state of weakly interacting bosons tends to be one in which almost all particles are in the same quantum-mechanical state (‘Bose-Einstein Condensate’, or ‘BEC’). It is found that even very small amounts of interwell tunneling lead to a BEC, but that zero tunneling leads …
Environmental Impact Assessment Of The Missouri Mine, Christian Laursen, Waco Holve-Burk
Environmental Impact Assessment Of The Missouri Mine, Christian Laursen, Waco Holve-Burk
College of Arts and Sciences Presentations
Gold mining in Idaho and other western states has left a legacy of heavy metal contamination. These metals enter the food chain via plants and water, and are toxic to living organisms. There is a need to identify and map the heavy metal contamination, and to track the fate and transport of heavy metals from one mine site to another via surface waters. Our hypothesis is that the severe contamination in the area of the Missouri Mine is not all from that site, but includes heavy metals transported in surface water from another mine to the northeast, in the Summit …
The Security Of Simplified Data Encryption Standard, Brandon Barker
The Security Of Simplified Data Encryption Standard, Brandon Barker
College of Arts and Sciences Presentations
The Data Encryption Standard (DES) is the most widely used symmetric key cryptosystem in the commercial world. DES was published in 1975 by the National Bureau of Standards, and since then it and its variants have been commonly used. DES is utilized in many modern industries and products including the Blackberry, electronic financial transactions, and access cards to corporate offices. An efficient but secure cryptosystem is challenging to produce and even after it has been deemed “secure” new attacks and vulnerabilities are often discovered. By investigating the algebraic structure of a simplified version of DES we are able to analyze …
A Simplified Aes With Field Characteristic 7, Suzanne Craig
A Simplified Aes With Field Characteristic 7, Suzanne Craig
College of Arts and Sciences Presentations
Today the greatest challenge to the cyber world is security. Technology rapidly changes, making old methods obsolete and requiring new developments and advancements in information security. Cryptography, the science of preparing coded or protected communications, designs systems which make messages intelligible only to the person possessing a key. There are two types of key-based cryptosystems: symmetric key and asymmetric cryptosystem. Symmetric key encryption is a cryptographic technique that uses a shared secret key to encrypt and decrypt data. Symmetric encryption algorithms are very efficient in processing large amounts of information. There are two types of symmetric encryption algorithms: stream ciphers …
Voltage Gating Interactions Of The Protein Lysenin With Metal Ions In An Artificial Lipid Bilayer, Tyler Clark, Sheenah Bryant, Steve Rossland, Eric Krueger, Charles Hanna, Daniel Fologea
Voltage Gating Interactions Of The Protein Lysenin With Metal Ions In An Artificial Lipid Bilayer, Tyler Clark, Sheenah Bryant, Steve Rossland, Eric Krueger, Charles Hanna, Daniel Fologea
College of Arts and Sciences Presentations
Non-specific ion conductance channels can be formed in lipid membranes by the poreforming toxin lysenin. These channels are voltage regulated and are responsive to changes in metal ion concentration. In our research, we studied the effects of metal ion concentration on the lysenin channel’s voltage regulated gating, using both multivalent and monovalent metals. A model was developed to explain the apparent subunit cooperativity within the lysenin channel. The model allows for the complex reaction to changing concentration of metal ions, and offers knowledge of the lysenin channel’s internal workings.
Does Wildfire And Cheatgrass Invasion In A Sage-Steppe Ecosystem Change Soil Texture?, Maeve Mccormick, Xavier Gagne, Jennifer Pierce
Does Wildfire And Cheatgrass Invasion In A Sage-Steppe Ecosystem Change Soil Texture?, Maeve Mccormick, Xavier Gagne, Jennifer Pierce
College of Arts and Sciences Presentations
Fire and land-use changes influence vegetation types and alter below-ground carbon storage and soil characteristics; additionally, shrub-steppe environments are prone to cheatgrass invasion and subsequent alterations in soil morphology and characteristics following fire. We compared soil particle size, texture, consistence, structure, color and pH among adjacent but distinct sagebrush (Artemisia tridentata ssp.), cheatgrass (Bromus tectorum) and crested wheatgrass (Agropyron cristatum) communities established following a 1983 fire in Kuna Butte of southwestern Idaho, a site underlain by basalt and mantled with loess. Soil characteristics were compared in qualitative field soil profiles (two pits per vegetation type) …