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Articles 1801 - 1830 of 20134
Full-Text Articles in Entire DC Network
A Forensic Comparison: Windows 7 And Windows 8, Peter J. Wilson
A Forensic Comparison: Windows 7 And Windows 8, Peter J. Wilson
Theses
Whenever a new operating system or new version of an operating system is released, forensic investigators must re-examine the new operating system or new version. They do so to determine if there are significant differences that will impact and change the way they perform their investigations. With the release of Microsoft's latest operating system, Windows 8, and its update, Windows 8.1, understanding the similarities and differences between Windows 8 and previous operating systems such as Windows 7 is critical. This paper forensically examines Windows 7 and Windows 8 to determine those similarities and differences.
Spectral Distortion In A Radially Inhomogeneous Cosmology, R. R. Caldwell, N. A. Maksimova
Spectral Distortion In A Radially Inhomogeneous Cosmology, R. R. Caldwell, N. A. Maksimova
Dartmouth Scholarship
The spectral distortion of the cosmic microwave background blackbody spectrum in a radially inhomogeneous space-time, designed to exactly reproduce a ΛCDM expansion history along the past light cone, is shown to exceed the upper bound established by COBE-FIRAS by a factor of approximately 3700. This simple observational test helps uncover a slew of pathological features that lie hidden inside the past light cone, including a radially contracting phase at decoupling and, if followed to its logical extreme, a naked singularity at the radially inhomogeneous big bang.
The Current Volume 24 : Issue 11, Nova Southeastern University
The Current Volume 24 : Issue 11, Nova Southeastern University
Student Newspapers
No abstract provided.
Taxis Toward Hydrogen Gas By Methanococcus Maripaludis, Kristen A. Brileya, James M. Connolly, Carey Downey, Robin Gerlach, Matthew W. Fields
Taxis Toward Hydrogen Gas By Methanococcus Maripaludis, Kristen A. Brileya, James M. Connolly, Carey Downey, Robin Gerlach, Matthew W. Fields
Biology Faculty Publications and Presentations
Knowledge of taxis (directed swimming) in the Archaea is currently expanding through identification of novel receptors, effectors, and proteins involved in signal transduction to the flagellar motor. Although the ability for biological cells to sense and swim toward hydrogen gas has been hypothesized for many years, this capacity has yet to be observed and demonstrated. Here we show that the average swimming velocity increases in the direction of a source of hydrogen gas for the methanogen, Methanococcus maripaludis using a capillary assay with anoxic gas-phase control and time-lapse microscopy. The results indicate that a methanogen couples motility to hydrogen concentration …
U.S. And Romanian Executive Mba Students: A Cross-Cultural Comparison, Ernest A. Capozzoli, David E. Gundersen, Marcel Duhaneanu
U.S. And Romanian Executive Mba Students: A Cross-Cultural Comparison, Ernest A. Capozzoli, David E. Gundersen, Marcel Duhaneanu
Journal of Executive Education
Currently, there are over 260 EMBA programs worldwide with approximately 180 programs resident in the United States. The number of programs available for EMBA students has increased competition for those students. One characteristic of this increased competition between EMBA programs is the addition of global initiatives to expose students to other cultures. Part of this global initiative has resulted in alliances and the establishment of working relationships between educational institutions. To facilitate and enhance the learning experience while in an EMBA program these alliances should consider the impact culture plays in shaping student expectations. This paper addresses the question of …
Cave And Climate Change: Educating The Public At Rats Nest Cave, Alberta, Canada, Charles J. Yonge, Andrea Corlett, Adam Walker
Cave And Climate Change: Educating The Public At Rats Nest Cave, Alberta, Canada, Charles J. Yonge, Andrea Corlett, Adam Walker
National Cave and Karst Management Symposium 2013
Rats Nest Cave is a Provincial Historic Site whose mandate is to present its natural history to the public. In addition to a suite of interpretive messages, and relevant to this conference’s topic, we have addressed diverse climate change over the geological history of the cave. We start with the cave-hosting rock and the fossils it contains, to its origin along a thrust fault, ending with its enlargement and secondary mineralization during the Quaternary glaciations (the latter having been dated by radiometric methods). We have undertaken a program of speleothem remediation which, visible to the public, serves to reinforce the …
Icaverns: Interpretation, There's An App For That!, Sandra Dianne Joop
Icaverns: Interpretation, There's An App For That!, Sandra Dianne Joop
National Cave and Karst Management Symposium 2013
A quarter of a century ago, cave and karst resources were declared irreplaceable with the passing of the Federal Cave Resources Protection Act. Yet, today, few understand the importance or fragility of these resources. Human interactions in karst areas make these resources highly susceptible to damage. Nonpersonal interpretation digital media products could serve as an important tool to bridge this informational gap.
Worldwide, there are hundreds of parks or parklike attractions focusing on cave, spring, or sinkhole resources. Their visitors have a built-in curiosity about these places. Engaging this audience in interpretive programming could greatly increase their speleological knowledge. Paradoxically, …
Photographic And Sediment Monitoring Procedures And Initial Results For A Brazilian Iron Ore Cave, Vitor Moura, Augusto Auler, Marina Leão, Luciana Alt
Photographic And Sediment Monitoring Procedures And Initial Results For A Brazilian Iron Ore Cave, Vitor Moura, Augusto Auler, Marina Leão, Luciana Alt
National Cave and Karst Management Symposium 2013
The definition, development and application of monitoring procedures for caves are currently in demand in Brazil. The need for environmental licensing processes and effective environmental control actions has been increasing since the beginning of this century due to the intensification of economic activities.
This work discusses the development of a method of photographic and sediment monitoring and the application of this method in an iron ore cave. This cave is located inside an industrial area currently under development by a mining company. This situation demands effective and specific environmental control measures.
The method’s simplicity, effectiveness and multidisciplinary approach indicate that …
Conceptualizing Communication Capital For A Changing Environment, Leo Wayne Jeffres, Guowei Jian, Sukki Yoon
Conceptualizing Communication Capital For A Changing Environment, Leo Wayne Jeffres, Guowei Jian, Sukki Yoon
Communication Faculty Publications
With rapidly evolving technologies, boundaries between traditional modes of communication have blurred, creating an environment that scholars still describe from viewpoints as researchers in interpersonal, organizational or mass communication. This manuscript looks at the social capital literature and argues for conceptualizing “communication capital” to help understand the impact of communication phenomena in a changing environment. The literature has treated interpersonal communication variables as components of social capital and mass communication variables as factors affecting social capital, but scholars long ago recognized their reinforcing nature, leading us to develop a concept of communication capital merging symbolic activity across domains in its …
November 4th 2013, Csusb
The Western Kentucky University Crumps Cave Research & Education Preserve, Chris Groves, Jason Polk, Ben Miller, Pat Kambesis, Carl Bolster, Sean Vanderhoff, Beth Tyrie
The Western Kentucky University Crumps Cave Research & Education Preserve, Chris Groves, Jason Polk, Ben Miller, Pat Kambesis, Carl Bolster, Sean Vanderhoff, Beth Tyrie
Earth, Environmental, and Atmospheric Sciences Faculty Publications
Crumps Cave is located about one kilometer northeast of Smiths Grove, Kentucky (Figures 1, 2, and 3). The only known entrance was purchased by Western Kentucky University (WKU) in 2009 through a grant from the Kentucky Heritage Land Conservation Fund and the cave is managed as the focal point of a research and education preserve to study a wide range of environmental conditions and dynamics, and their interactions, using high-resolution electronic monitoring along with geochemical sampling, analysis and modeling. Crews from WKU’s Hoffman Environmental Research Institute visit the cave weekly for sampling, data downloading, and equipment maintenance, with a major …
Current, November 04, 2013, University Of Missouri-St. Louis
Current, November 04, 2013, University Of Missouri-St. Louis
Current (2010s)
No abstract provided.
Warren J. Baker Center For Science And Mathematics Dedicated Nov. 1, Public Affairs Office
Warren J. Baker Center For Science And Mathematics Dedicated Nov. 1, Public Affairs Office
Press Releases
No abstract provided.
Postglacial Faunal Records From Cave Deposits In Jasper National Park, Alberta, Canada, Christopher N. Jass, Greg Horne, Dave Critchley
Postglacial Faunal Records From Cave Deposits In Jasper National Park, Alberta, Canada, Christopher N. Jass, Greg Horne, Dave Critchley
National Cave and Karst Management Symposium 2013
In 2009, we initiated an on-going, long term research project that focuses on exploration of fossil-bearing cave deposits in Jasper National Park. Specifically, we were interested in understanding patterns of mammalian re-colonization of mountainous regions following late Pleistocene deglaciation. Our work has focused on the identification of fossil-bearing cave deposits, excavation and sampling of those deposits, and radiocarbon dating of recovered remains. Examined sites have at least an age of 9600 years BP. Research at four cave sites, located in relatively close proximity to one another, is contributing to an improved understanding of the late Quaternary record of Jasper National …
Understanding A Globally Unique Nexus Of Acid Mine Drainage, Karst And World Heritage Site, Philip J. Hobbs, P.J. (Peter) Mills
Understanding A Globally Unique Nexus Of Acid Mine Drainage, Karst And World Heritage Site, Philip J. Hobbs, P.J. (Peter) Mills
National Cave and Karst Management Symposium 2013
The Cradle of Humankind World Heritage Site (COH WHS), South Africa, is the only UNESCO-protected karst landscape in the world that is under threat from acid mine drainage (AMD). This has generated wide and considerable concern for the preservation of the fossil sites and karst ecosystems of the WHS. A recent assessment of the water resources environment and continued water resources monitoring has better informed this situation, providing support for management efforts to protect the aquatic environment and outstanding universal value of the site. Allogenic recharge of AMD (salinity >300 mS/m, pH 7, PO4-P ~4 mg/l, E. coli ~240 000 …
Paleohydrology And The Origin Of Jewel Cave, Mike Wiles
Paleohydrology And The Origin Of Jewel Cave, Mike Wiles
National Cave and Karst Management Symposium 2013
With more than 267 m (166 miles) of mapped cave passages, Jewel Cave is the third longest cave in the world. The passages are beneath an area of 775 ha (3 mi2), located almost entirely within the Hell Canyon drainage basin. The canyon itself is situated in the bottom of a south-plunging syncline and most of the cave passages are located within the east limb. A down-dip cross section shows the cave passages assuming the shape of an elongate lens, located just below the Pahasapa/Minnelusa contact. The lower boundary is a maximum of 75 m (250 feet) below …
Hydrogeologic Controls On The Occurrence And Movement Of Groundwater Discharged At Magic Springs In The Spring Branch Creek Drainage Basin: Spring Branch, Texas, Mark T. Childre
National Cave and Karst Management Symposium 2013
The hydrogeologic controls, flow velocities, flow direction, groundwater delineation, and physical characteristics in a joint controlled dendritic conduit-spring system have been characterized. The known conduit branches from Magic Springs past C My Shovel (CM) Cave with 4475 meters (m) of measurable passages and tributaries. Surface entrance to CM Cave is located 1360 m upstream from discharge at Magic Springs.
Four storm events were measured characterizing the dynamics. The rise time and half flow period time (t0.5) occur in less than one day. The conduit volume exceeds one half million m3. The conduit-spring system drains within 3.7 …
2013 November 4 - Faculty Senate Minutes, Faculty Senate, East Tennessee State University
2013 November 4 - Faculty Senate Minutes, Faculty Senate, East Tennessee State University
Faculty Senate Agendas and Minutes
No abstract provided.
2013-14 Faculty Senate - November 4, 2013 Minutes Summary, Faculty Senate
2013-14 Faculty Senate - November 4, 2013 Minutes Summary, Faculty Senate
Faculty Senate Agendas & Minutes
No abstract provided.
Simulating The Performance Of Tracking A Spinning Missile At C-Band, Darren Robert Kartchner
Simulating The Performance Of Tracking A Spinning Missile At C-Band, Darren Robert Kartchner
Theses and Dissertations
The amplitude fluctuation induced by a spinning missile acts as a disturbance on tracking schemes that use sequential lobing (e.g., conscan). In addition, if a tracking system converts from S-band to C-band, the beamwidth is narrower and the wrap-around antenna on the missile requires more patches, and so the margin of error for tracking decreases. Tracking performance is simulated with a spinning missile with ballistic and fly-by trajectories while running at C-band. The spinning missile causes a periodic component in the pointing error, and when the scan frequency is an integer multiple of the roll rate, several tracking schemes lose …
The Fort Stanton Cave Study Project: A Model For Agency – Caver Partnership In Cave Management, Steve S. Peerman, Michael J. Bilbo
The Fort Stanton Cave Study Project: A Model For Agency – Caver Partnership In Cave Management, Steve S. Peerman, Michael J. Bilbo
National Cave and Karst Management Symposium 2013
The Fort Stanton Cave Study Project and the Roswell Field Office of the Bureau of Land Management have been working together to manage Fort Stanton Cave for over 40 years. This successful partnership is a shining example of resource managers and resource users collaborating to the mutual benefit of both. There are several specific aspects to this partnership which could be regarded as a model for other user groups and agencies who need or want to enter into a cooperative relationship.
Solution Mining And The Protection Of Karst Groundwater Supplies In Burton Flats, Southeast New Mexico, Usa, James R. Goodbar
Solution Mining And The Protection Of Karst Groundwater Supplies In Burton Flats, Southeast New Mexico, Usa, James R. Goodbar
National Cave and Karst Management Symposium 2013
The Bureau of Land Management (BLM) is an agency of the United States of America Department of Interior and responsible for stewardship of public lands. It is committed to manage, protect and improve these lands in a manner to serve the needs of the American people. Management is based upon the principles of multiple use and sustained yield of our nation’s resources within a framework of environmental responsibility and scientific technology. These resources include recreation, rangelands, timber, minerals, watershed, fish and wildlife habitat, wilderness, air and scenic quality, as well as scientific and cultural values.
The BLM received a potash …
Understanding And Managing Karst Water Resources In Belize: Case Studies Of Both Past And Present In A Changing Climate, Jason S. Polk, Leslie A. North, Ben Miller, Jonathan Oglesby, Kegan Mcclanahan, Lowell Neeper, Aaron Holland, Bernie Strenecky
Understanding And Managing Karst Water Resources In Belize: Case Studies Of Both Past And Present In A Changing Climate, Jason S. Polk, Leslie A. North, Ben Miller, Jonathan Oglesby, Kegan Mcclanahan, Lowell Neeper, Aaron Holland, Bernie Strenecky
National Cave and Karst Management Symposium 2013
Belize is a developing country that faces water resource issues in the forms of both quality and quantity, stemming from a long history of environmental stress and population threats, from the ancient Maya to present. Belize’s karst landscape, which comprises a large part of the country from the coast to the Maya Mountains, is characterized by springs, caves, sinkholes, and aquifers systems formed from the dissolution of carbonate (limestone, dolomite) rock. This research presents several different case studies, spanning from the ancient Maya and issues with drought to modern communities that rely on groundwater resources quickly being depleted. Past drought …
Caver Quest 3d Virtual Cave Simulation Of Snowy River In Fort Stanton Cave, Ronald J. Lipinski, Pete Lindsley
Caver Quest 3d Virtual Cave Simulation Of Snowy River In Fort Stanton Cave, Ronald J. Lipinski, Pete Lindsley
National Cave and Karst Management Symposium 2013
Virtual worlds, or 3D simulations through which an avatar can travel, is becoming a common means to display products or provide training in new environments. This paper describes the steps in producing the 3D virtual simulation of Snowy River in Fort Stanton Cave, New Mexico. A traditional cave survey and map with cross sections was used to produce a 3D meshed surface of the cave walls using the Blender software package. Photographs were taken of the walls, ceiling, and floor and merged together. The merged montage was applied to the 3D mesh walls as a “texture”. Unity3D was used to …
The Western Kentucky University Crumps Cave Research And Education Preserve, Chris Groves, Jason Polk, Ben Miller, Pat Kambesis, Carl Bolster, Sean Vanderhoff, Beth Tyrie, Micah Ruth, Gilman Ouellette, Laura Osterhoudt, Dan Nedvidek, Kegan Mcclanahan, Nocholas Lawhon, Veronica Hall
The Western Kentucky University Crumps Cave Research And Education Preserve, Chris Groves, Jason Polk, Ben Miller, Pat Kambesis, Carl Bolster, Sean Vanderhoff, Beth Tyrie, Micah Ruth, Gilman Ouellette, Laura Osterhoudt, Dan Nedvidek, Kegan Mcclanahan, Nocholas Lawhon, Veronica Hall
National Cave and Karst Management Symposium 2013
Crumps Cave is located about one kilometer northeast of Smiths Grove, Kentucky (Figures 1, 2, and 3). The only known entrance was purchased by Western Kentucky University (WKU) in 2009 through a grant from the Kentucky Heritage Land Conservation Fund and the cave is managed as the focal point of a research and education preserve to study a wide range of environmental conditions and dynamics, and their interactions, using high-resolution electronic monitoring along with geochemical sampling, analysis and modeling. Crews from WKU’s Hoffman Environmental Research Institute visit the cave weekly for sampling, data downloading, and equipment maintenance, with a major …
The Nps Cave Visitor Impact Vital Signs Monitoring Protocol, Rodney Horrocks
The Nps Cave Visitor Impact Vital Signs Monitoring Protocol, Rodney Horrocks
National Cave and Karst Management Symposium 2013
The national Cave Visitor Impact Vital Signs Monitoring Protocol is an attempt to standardize visitor impact monitoring in all National Park Service managed caves. With standardized monitoring in place, it will be feasible for the first time to compare monitoring data from caves across the country. This cave monitoring protocol was initiated at the NPS Cave Vital Signs Workshop held in Lakewood, Colorado in 2008. That workshop identified the vital signs that were common to all caves, including cave visitor impact. A committee convened at that workshop decided that the cave visitor impact monitoring protocol would address four parameters of …
Quantum State Cloning Using Deutschian Closed Timelike Curves, Todd A. Brun, Mark M. Wilde, Andreas Winter
Quantum State Cloning Using Deutschian Closed Timelike Curves, Todd A. Brun, Mark M. Wilde, Andreas Winter
Faculty Publications
We show that it is possible to clone quantum states to arbitrary accuracy in the presence of a Deutschian closed timelike curve (D-CTC), with a fidelity converging to one in the limit as the dimension of the CTC system becomes large - thus resolving an open conjecture [Brun et al., Phys. Rev. Lett. 102, 210402 (2009)]. This result follows from a D-CTC-assisted scheme for producing perfect clones of a quantum state prepared in a known eigenbasis, and the fact that one can reconstruct an approximation of a quantum state from empirical estimates of the probabilities of an informationally complete measurement. …
Emu Today, November 4, 2013, Eastern Michigan University
Emu Today, November 4, 2013, Eastern Michigan University
EMU Today
No abstract provided.
The Stochastic Background: Scaling Laws And Time To Detection For Pulsar Timing Arrays, X. Siemens, Justin A. Ellis, Fredrick A. Jenet, Joseph D. Romano
The Stochastic Background: Scaling Laws And Time To Detection For Pulsar Timing Arrays, X. Siemens, Justin A. Ellis, Fredrick A. Jenet, Joseph D. Romano
Physics & Astronomy Faculty Publications
We derive scaling laws for the signal-to-noise ratio of the optimal cross-correlation statistic, and show that the large power-law increase of the signal-to-noise ratio as a function of the observation time T that is usually assumed holds only at early times. After enough time has elapsed, pulsar timing arrays enter a new regime where the signal to noise only scales as . In addition, in this regime the quality of the pulsar timing data and the cadence become relatively unimportant. This occurs because the lowest frequencies of the pulsar timing residuals become gravitational-wave dominated. Pulsar timing arrays enter this regime …