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Articles 1 - 30 of 217
Full-Text Articles in Physical Sciences and Mathematics
Networks - I: Pre-Coordination Mechanism For Self Configuration Of Neighborhood Cells In Mobile Wi-Max, Abdul Qadeer, Khalid Khan
Networks - I: Pre-Coordination Mechanism For Self Configuration Of Neighborhood Cells In Mobile Wi-Max, Abdul Qadeer, Khalid Khan
International Conference on Information and Communication Technologies
WiMax broadband services successfully providing triple play (Voice, Video and Data) support with combating the challenges of better quality and interoperability. Support for smooth mobility in real time with no wired infrastructure and being surrounded by GSM waves demanding a comprehensive and powerful network. Covering large areas through number of base stations which not only require time to configure but also need resources for implementation with a recurring cost of functionality. Automation is everywhere and to provide novel wireless services it is necessary to come up with some distinct features like intelligent base stations which have the capability of doing …
The Chernobyl Disaster : Reflection After 25 Years = 切爾諾貝爾核災難25年後的反思, Valentin Yakushik
The Chernobyl Disaster : Reflection After 25 Years = 切爾諾貝爾核災難25年後的反思, Valentin Yakushik
South South Forum 南南論壇
The adverse technogenic impact of industrial accidents that have gripped the world in recent decades definitely testifies to the problem-ridden character of contemporary economic and technological development. This is especially evident on the example of nuclear industry, which proved to be a source of dangerous pollution in case of potential (and real) catastrophes, as recently borne out by the Fukushima disaster. In this regard, the issues of Chernobyl disaster once again become the part of the discourse centered on the analysis of global nuclear industry problems. Likewise, current situation in Ukraine demands deeper investigation of the problems of technological development, …
Session G: Nuclear Power/Climate Change – Terrapower’S Traveling Wave Reactor, Tyler Ellis
Session G: Nuclear Power/Climate Change – Terrapower’S Traveling Wave Reactor, Tyler Ellis
Climate Change and the Future of Nuclear Power
TerraPower is moving forward with detailed plans for a sustainable, economic, and safe nuclear reactor. The Travelling Wave Reactor (TWR) – a reactor in the 500-megawatt electric range – uses unique core physics to initiate a breed and burn wave which can be completely sustained in fertile material. This process allows the TWR to convert depleted uranium waste into usable fuel as the reactor operates, providing a sustainable base-load power source. TerraPower is the first company to create a practical engineering embodiment of this previously studied concept thanks to a powerful advanced reactor modeling interface, developed in-house, which enables the …
Session G: Nuclear Power/Climate Change – Climate V. Climate Alarm, Richard S. Lindzen
Session G: Nuclear Power/Climate Change – Climate V. Climate Alarm, Richard S. Lindzen
Climate Change and the Future of Nuclear Power
The underlying physics of climate contains important elements that are widely agreed on though frequently misunderstood. In this lecture, the basic physics of greenhouse warming are simply described. It will be shown that the dynamic mixing of the troposphere is essential to the mechanism. It will further be shown that there is nothing intrinsically alarming in the basic physics. Alarm depends critically on the assertion that the climate system is dominated by large positive feedbacks that greatly amplify such warming as may be due to increasing CO2 alone. The nature of possible feedbacks will be described, and the conditions for …
Session B: The Future Of Nuclear Power - Aim High! Thorium Energy Cheaper Than From Coal, Cavan Stone
Session B: The Future Of Nuclear Power - Aim High! Thorium Energy Cheaper Than From Coal, Cavan Stone
Climate Change and the Future of Nuclear Power
This century, we face significant environmental challenges. Our demand for limited natural resources is rapidly increasing and much of humanity is concerned about the consequences. Our unsustainably growing population drives these challenges, and humanely stabilizing it would alleviate these pressures. Demographic data clearly shows that prosperity stabilizes population and it also shows that prosperity critically requires energy. In spite of the pressing and demonstrable nature of these challenges however, politically there is no international consensus on global energy policy. Developing nations simply will not accept a policy that will hamper their economic growth. Yet, we do have a solution to …
Session B: The Future Of Nuclear Power - The Fukushima Nuclear Event And Its Implications For Nuclear Power, Michael W. Golay
Session B: The Future Of Nuclear Power - The Fukushima Nuclear Event And Its Implications For Nuclear Power, Michael W. Golay
Climate Change and the Future of Nuclear Power
The combined strong earthquake and super tsunami of 12 March 2011 at the Fukushima nuclear power plant imposed the most severe challenges ever experienced at such a facility. Information regarding the plant response and status remains uncertain, but it is clear that severe damage has been sustained, that the plant staff have responded creatively and that the offsite implications are unlikely to be seriously threatening to the health, if not the prosperity, of the surrounding population. Reexamination of the regulatory constraints of nuclear power will occur worldwide, and some changes are likely; particularly concerning reliance upon active systems for achieving …
Session B: The Future Of Nuclear Power - The Fundamentals And Status Of Nuclear Power, Regis A. Matzie
Session B: The Future Of Nuclear Power - The Fundamentals And Status Of Nuclear Power, Regis A. Matzie
Climate Change and the Future of Nuclear Power
Nuclear power has enormous potential to provide clean, safe base-load electricity to the world’s growing population. Harnessing this potential in an economic and responsible manner is not without challenges. Safety remains the principal tenet of our operating fleet, which currently provides ~20% of U.S. electricity generated. The performance of this fleet from economic and safety standpoints has improved dramatically over the past several decades. This nuclear generation also represents greater than 70% of the emission free electricity with hydroelectric power providing the majority of the remainder. There have been many lessons learned from the more than 50 years of experience …
Conference Poster, Gerald Peterson
Conference Poster, Gerald Peterson
Climate Change and the Future of Nuclear Power
No abstract provided.
Session 1 Presentation: Ocean Testing Of A Power-Capturing Wave Buoy, Kathleen Edwards
Session 1 Presentation: Ocean Testing Of A Power-Capturing Wave Buoy, Kathleen Edwards
Ocean Waves Workshop
No abstract provided.
Concurrent Sessions 2c: Growing Sustainable Communities, Vincent Devito, Rebecca Davis, Peggy Sloan, Amy Kacala
Concurrent Sessions 2c: Growing Sustainable Communities, Vincent Devito, Rebecca Davis, Peggy Sloan, Amy Kacala
Clean Energy Connections
Sustainable communities are an integral part of the clean energy economy - housing, jobs, innovation, growth. Several regions in Massachusetts were awarded Regional Sustainability Planning Grants in 2010 by the US Department of Housing and Urban Development, including the Franklin Regional Council of Governments, Metropolitan Area Planning Council, the Berkshire Regional Planning Commission and 2011 Preferred Sustainability Status holder, the Institute for Energy and Sustainability. Panelists from each agency will share how these plans will improve sustainability in Massachusetts communities, what we can learn from the similarities and differences of sustainability planning in each region and how groups and individuals …
Concurrent Sessions 2b: When Communities Take The Lead: Green Computing, Solar, Wind, Brian Beauregard, Meredith Cochran, Michael Tautznik, Spiro Vardakas
Concurrent Sessions 2b: When Communities Take The Lead: Green Computing, Solar, Wind, Brian Beauregard, Meredith Cochran, Michael Tautznik, Spiro Vardakas
Clean Energy Connections
Several exciting clean energy projects in Western MA are capturing state and national attention. The initiatives discussed in this session will demonstrate how communities are being proactive in deploying cleantech solutions, unleasing the potential of the innovation that can help our economy grow.
Keynote 2 - Reflections From The National Renewable Energy Laboratory, Walter Musial
Keynote 2 - Reflections From The National Renewable Energy Laboratory, Walter Musial
Clean Energy Connections
No abstract provided.
Lunch, Marla Michel
Concurrent Sessions 1a: Ramping It Up: From Marketing To Partnerships, Jef Sharp, Michael Mahoney, Jonathan Edwards
Concurrent Sessions 1a: Ramping It Up: From Marketing To Partnerships, Jef Sharp, Michael Mahoney, Jonathan Edwards
Clean Energy Connections
Cleantech startups are all the rage, but what does it take for these companies to get to that next level? Marketing the new company's brand or partnering with large companies with more resources? Either of these can help get innovations to market more quickly.
Concurrent Sessions 1b: A View From The Summits: The Confluence Of Clean Energy Economic And Workforce Development, Said Dini, Marybeth Campbell, Kevin Doyle, Madelinne Snow
Concurrent Sessions 1b: A View From The Summits: The Confluence Of Clean Energy Economic And Workforce Development, Said Dini, Marybeth Campbell, Kevin Doyle, Madelinne Snow
Clean Energy Connections
This session (and live-streamed webinar) will be the culmination of a year (+) long project to coalesce clean energy innovators from business, labor, government, academia and community groups to take a snapshot of where we are, share information about our projects, think about strategies and tactics for the future, and re-energize ourselves for the work ahead in support of a robust clean energy industry in Massachusetts. Attendees at this session will hear about the key recurring themes, recommendations, conclusions born from the three summits in Lowell, New Bedford and Amherst, will hear about recent actions taken based on summit discussions, …
Keynote 1 - Developing A Clean Energy Regional Innovation Cluster, Jim Robbins, Michael Ryan
Keynote 1 - Developing A Clean Energy Regional Innovation Cluster, Jim Robbins, Michael Ryan
Clean Energy Connections
No abstract provided.
Welcome, Marla Michel, Domenic J. Sarno, Steve Goodwin
Welcome, Marla Michel, Domenic J. Sarno, Steve Goodwin
Clean Energy Connections
No abstract provided.
Taking “Grazing” To The Next Level, Edward N. Ballard
Taking “Grazing” To The Next Level, Edward N. Ballard
Kentucky Grazing Conference
Since the late 1980’s, producer awareness of pasture management has been increasing. A number of factors have brought this about. Mainly, economic conditions have forced producers to look at their bottom line and this has reflected the low returns from mismanagement of forages and pastures. Also, advancements in the technology of pasture management and improvement have made more intensive utilization of the forage resource more economically viable. Advances in equipment, especially fencing and water equipment, have also helped bring about the increased interest in better grassland management.
My Grazing Experience: Reflections And Observations, Russell C. Hackley
My Grazing Experience: Reflections And Observations, Russell C. Hackley
Kentucky Grazing Conference
My pastures are utilized by a beef operation consisting primarily of a small cow/calf herd (30 cows), and a stocker operation numbering from 300-350 head annually, which are grazed only, from spring until fall. These stockers are purchased, continental breed calves, weighing from 500-550 pounds. In the fall, they are sold to Laura’s Lean Beef, usually at a forward contracted price after adding 300 pounds of gain. Occasionally, the stocking includes calves not eligible for Laura’s Lean which are then sold in truckload lots through internet sales.
Options For Getting Water In Every Paddock, Kevin Laurent
Options For Getting Water In Every Paddock, Kevin Laurent
Kentucky Grazing Conference
Whether you call it rotational grazing, intensive grazing or management intensive grazing, the economic benefits of controlling how and where your cattle graze are well documented. Increased forage utilization, greater stocking rates, greater legume persistence, reduced hay feeding and more uniform nutrient recycling are just some of the many benefits producers can take advantage of when practicing some form of controlled grazing. However, one of the greatest challenges to implementing a controlled grazing system is the delivery of stock water to the grazing animal.
Stockpiling Tall Fescue: Cost & Return, Greg S. Halich
Stockpiling Tall Fescue: Cost & Return, Greg S. Halich
Kentucky Grazing Conference
An opportunity that Kentucky cattle farmers have in reducing their hay requirements is to apply nitrogen on select pastures to stockpile for fall and winter grazing. By increasing the total pasture production during this time period, the grazing season can be extended and the amount of hay required can be reduced.
Ryzup Smartgrass: Growth Promotion For Forages, S. Ray Smith
Ryzup Smartgrass: Growth Promotion For Forages, S. Ray Smith
Kentucky Grazing Conference
Whenever we discuss grazing management we emphasize how proper grazing will produce the maximum amount of plant growth. Giving forage plants an adequate rest period after each grazing event is essential to allow growth and storage of carbohydrates for the next growth cycle. With grasses, leaving leaf area after grazing allows the plant to maintain photosynthesis and regrow faster. On a more basic level though, all plants regulate growth with hormones. These hormones are termed “plant growth regulators.” Auxin controls cell division and the direction of plant growth. Gibberellic acid (abbrev. GA) has three main functions in plants: 1) stimulate …
Benefits Of "Improved" Grazing--More Important Now Than Ever!, Garry D. Lacefield
Benefits Of "Improved" Grazing--More Important Now Than Ever!, Garry D. Lacefield
Kentucky Grazing Conference
At this Conference twelve years ago I talked about the “Benefits of Improved Grazing”. We have had aspects of that theme at every Kentucky Grazing Conference since and also emphasized that message at 10 Heart of America Grazing Conferences and three National Grazing Conferences. With all that emphasis, why do I bring this up again and even have the nerve to say “More Important Now than Ever”? Well, the short answer is “things are different now!”
Foreword And Kfgc Award Winners [2011], Garry D. Lacefield, Christi L. Forsythe
Foreword And Kfgc Award Winners [2011], Garry D. Lacefield, Christi L. Forsythe
Kentucky Grazing Conference
No abstract provided.
University Scholar Series: Monika Kress, Monika Kress
University Scholar Series: Monika Kress, Monika Kress
University Scholar Series
Meteorites and the Origin of Habitable Worlds
On November 30, 2011, Dr. Monika Kress spoke in the University Scholar Series hosted by Provost Gerry Selter at the Dr. Martin Luther King, Jr. Library. Monika Kress is an Associate Professor of Physics and Astronomy at SJSU and also a member of the NASA Astrobiology Institute's Virtual Planetary Laboratory. In this seminar, she presents the theory of solar system formation, focusing on meteorites. Dr. Kress also describes a first-hand account of how meteorites are recovered from the most fertile meteorite-hunting ground on Earth: Antarctica
Mobile Technology As A Tool For Enhancing Student Learning In Geosciences, Sam Matson
Mobile Technology As A Tool For Enhancing Student Learning In Geosciences, Sam Matson
Mobile Learning Symposium
Incorporation of mobile technology into the post-secondary classroom is becoming increasingly common as universities seek to facilitate active, student-centered learning through rapid access to information, connect students with course content through social media, and evaluate digital alternatives to conventional instructor-student interaction. The m-Learning Scholars Program at Boise State University was initiated during the 2010 – 2011 academic year, and provides a venue for exploring the potential of mobile technology to enhance student learning in the geosciences. Through this program, 38 students in an introductory Earth History course for non-geoscience majors each purchased a subsidized handheld device (iPod touch) that they …
Correlation Between Grain Dislocation Density And Orientation For Naturally Deformed Mantle Xenolith From Jagersfontein Mine, Quinton Guerrero, Quinlan Smith
Correlation Between Grain Dislocation Density And Orientation For Naturally Deformed Mantle Xenolith From Jagersfontein Mine, Quinton Guerrero, Quinlan Smith
Undergraduate Research Opportunities Program (UROP)
Determining the reaction of poly-crystalline structures to induced stress is an extremely difficult problem in contemporary engineering and geology. The main challenge lies in the inhomogeneity of the grains inside of the poly-crystalline structures. To predict the response of a certain polycrystalline structure to a specific stress, you must resort to one of two views on grain interaction, an orientation or propagation based model. For every material there may be certain correlations between the prediction model used and the actual deformation that occurred. Our work centers around describing the correlation of these prediction models with a sample of naturally deformed …
High Pressure Structural Studies On Nb5si3 Up To 26.2 Gpa, Brandon Stewart, Ravhi S. Kumar
High Pressure Structural Studies On Nb5si3 Up To 26.2 Gpa, Brandon Stewart, Ravhi S. Kumar
Undergraduate Research Opportunities Program (UROP)
With the use of synchrotron techniques, we can better understand how crystalline structures behave under extreme conditions. This yields the opportunity to resolve complex crystal structures [1]. Here, we focus on the high pressure crystal structure of Nb5Si3. Refractory metal silicides are an important class of materials as they are used in high temperature applications such as turbines and aerospace modules. As an example, the performance of a jet engine is highly influenced by the maximum internal pressure and temperature possible. Obtaining higher levels of thrust is dependent upon the material's ability to remain structurally sound under extreme temperatures and …
High Pressure Study Of 1,1-Diamino-2,2-Dinitroethene With Raman Spectroscopy, Jack Brangham, Michael Pravica, Martin Galley
High Pressure Study Of 1,1-Diamino-2,2-Dinitroethene With Raman Spectroscopy, Jack Brangham, Michael Pravica, Martin Galley
Undergraduate Research Opportunities Program (UROP)
The goal of this experiment is to better understand the reasons for Fox-7s insensitivity and high performance. It is very similar to other explosives in composition but different in structure. This different structure is believed to be the reason for Fox-7s unique characteristics. Using Raman spectroscopy along with high pressure techniques we hope to better understand this molecule and how it handles extreme conditions.
Ionic Alkalihalides As Pressure Media In Dac Experiments, Julius Monello
Ionic Alkalihalides As Pressure Media In Dac Experiments, Julius Monello
Undergraduate Research Opportunities Program (UROP)
In Diamond Anvil Cells (DACs), usually a pressure transmitting medium functions to transform the uniaxial pressure supplied by the opposing diamond anvils into uniform hydrostatic pressure acting on the sample. Conventionally, a 4-1 methanol-ethanol solution, or a 16-3-1 methanol-ethanol-water solution is used as pressure transmitting medium. However, these two solutions transform into a glass with high elastic shear strength at pressures around 12-14 GPa and no longer function as hydrostatic medium. Our goal was to determine if liquid ionic alkalihalide alkanolate complexes will provide more uniform pressure in the cell up to 20 GPa. Ruby (Cr-doped AlP,) produces two Cr"+ …