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Articles 2971 - 3000 of 3030
Full-Text Articles in Physical Sciences and Mathematics
Configuring Client Software Using Remote Notification Us:6219698, Robert Iannucci, Chris Weikart
Configuring Client Software Using Remote Notification Us:6219698, Robert Iannucci, Chris Weikart
Robert A Iannucci
No abstract provided.
A Practical Guide To Writing Law School Essay Exams, John Dernbach
A Practical Guide To Writing Law School Essay Exams, John Dernbach
John C. Dernbach
No abstract provided.
The Y-Triangle Move Does Not Preserve Intrinsic Knottedness, Ramin Naimi, Erica Flapan
The Y-Triangle Move Does Not Preserve Intrinsic Knottedness, Ramin Naimi, Erica Flapan
Ramin Naimi
We answer the question "Does the Y-triangle move preserve intrinsic knottedness?" in the negative by giving an example of a graph that is obtained from the intrinsically knotted graph K_7 by triangle-Y and Y-triangle moves but is not intrinsically knotted.
Intrinsically Triple Linked Complete Graphs, Ramin Naimi, Erica Flapan, James Pommersheim
Intrinsically Triple Linked Complete Graphs, Ramin Naimi, Erica Flapan, James Pommersheim
Ramin Naimi
No abstract provided.
Health & Environment: In Search Of The Balance. Keynote Speech Pielc 2001, Nat Quansah
Health & Environment: In Search Of The Balance. Keynote Speech Pielc 2001, Nat Quansah
Nat Quansah
No abstract provided.
The Influence Of Ni On The Transport Properties Of Cosb3, C. Uher, Jeffrey Dyck, W. Chen, G. Meisner, J. Yang
The Influence Of Ni On The Transport Properties Of Cosb3, C. Uher, Jeffrey Dyck, W. Chen, G. Meisner, J. Yang
Jeffrey Dyck
The effect of Ni doping on the Co site of the binary skutterudite CoSb3 is investigated. We measured resistivity, Hall effect, magnetoresistance, thermopower, thermal conductivity, and magnetization of a series of samples of the form Co1-xNixSb3 with x in the range x=0 to x=0.01. We find that Ni takes the tetravalent state Ni4+, assumes the d6 electronic configuration for the lower energy non-bonding orbitals, and gives an electron to the conduction band. Ni doping dramatically suppresses the thermal conductivity, changes the temperature dependence of the thermopower, and increases the carrier concentration. Low temperature anomalies in thermopower, Hall coefficient and magnetoresistance …
Low Temperature Thermoelectric Properties Of Ni Doped N-Type Filled Skutterudites Ba0.3co4sb12 ., W. Chen, Jeffrey Dyck, C. Uher, L. Chen, X. Tang, T. Hirai
Low Temperature Thermoelectric Properties Of Ni Doped N-Type Filled Skutterudites Ba0.3co4sb12 ., W. Chen, Jeffrey Dyck, C. Uher, L. Chen, X. Tang, T. Hirai
Jeffrey Dyck
n-type Ba filled skutterudites doped with Ni, Ba0.3Ni xCo4-xSb12 with 0⩽x⩽0.2, have been synthesized and the Seebeck coefficient, thermal conductivity, electrical resistivity and Hall coefficient have been measured. ZT of 1.2 has been achieved at 800 K with x=0.05. The thermal conductivity data are fitted and the rattling effect of the Ba atoms is identified through a resonance scattering term. The Hall mobility is studied and a mixed scattering mechanism of acoustic phonons and ionized impurities based on a single, rigid band picture is presented. The role of Ni atoms in enhancing the thermoelectric performance is discussed
Multi-Filling Approach For The Improvement Of Thermoelectric Properties Of Skutterudites., L. Chen, X. Tang, T. Kawahara, Jeffrey Dyck
Multi-Filling Approach For The Improvement Of Thermoelectric Properties Of Skutterudites., L. Chen, X. Tang, T. Kawahara, Jeffrey Dyck
Jeffrey Dyck
Several skutterudite antimonides filled with atoms of different kinds, (Ba, M)yCo4Sb12 (M=Ce, La, Sr), have been synthesized by the combination of solid state reaction and melting methods. Thermal conductivity of (Ba,Sr)yCo4 Sb12 samples shows a behavior similar to that of BayCo4Sb12. Adding a small amount of Ce or La to the BayCo4Sb12 system is effective in further reducing the lattice thermal conductivity. The difference in the ionic radii of the two co-filler atoms is the most sensitive factor for scattering of phonons. The multi-filled (Ba, M)yCo4Sb12 (M=Sr, Ce, La) show lower Seebeck coefficients as compared to the single-filled BayCo 4Sb12 …
Federal Fossil Fuel Subsidies And Greenhouse Gas Emissions: A Case Study Of Increasing Transparency For Fiscal Policy, John Dernbach, Doug Koplow
Federal Fossil Fuel Subsidies And Greenhouse Gas Emissions: A Case Study Of Increasing Transparency For Fiscal Policy, John Dernbach, Doug Koplow
John C. Dernbach
No abstract provided.
High-Temperature Thermoelectric Properties Of N-Type Baynixco4-Xsb12., X. Tang, L. Zhang, R. Yuan, L. Chen, T. Goto, T. Hirai, Jeffrey Dyck, W. Chen, C. Uher
High-Temperature Thermoelectric Properties Of N-Type Baynixco4-Xsb12., X. Tang, L. Zhang, R. Yuan, L. Chen, T. Goto, T. Hirai, Jeffrey Dyck, W. Chen, C. Uher
Jeffrey Dyck
Effects of Ba filling fraction and Ni content on the thermoelectric properties of n-type BayNixCo4-xSb12 (x = 0-0.1, y = 0.-0.4) were investigated at temperature range of 300 to 900 K. Thermal conductivity decreased with increasing Ba filling fraction and temperature. When y was fixed at 0.3, thermal conductivity decreased with increasing Ni content and reached a minimum value at about x = 0.05. Lattice thermal conductivity decreased with increasing Ni content, monotonously (y ≤ 0.1). Electron concentration and electrical conductivity increased with increasing Ba filling fraction and Ni content. Seebeck coefficient increased with increasing temperature and decreased with increasing …
Femtosecond Polarization Detection Using High-Speed Pulse Shaping, D. Keusters, Peifang Tian, W. Warren
Femtosecond Polarization Detection Using High-Speed Pulse Shaping, D. Keusters, Peifang Tian, W. Warren
Peifang Tian
This book presents the latest advances in ultrafast science, including ultrafast laser and measurement technology as well as studies of ultrafast phenomena. Pico- and femtosecond processes relevant in physics, chemistry, biology and engineering are presented. Ultrafast technology has had a profound impact in a wide range of applications, among them imaging, material diagnostics and transformation and high-speed optoelectronics. This book summarizes the results presented at the 12th Ultrafast Phenomena Conference and reviews the state of the art of this important and rapidly advancing field.
Distinguishing Natural Language Processes On The Basis Of Fmri-Measured Brain Activation, Francisco Pereira, Marcel Just, Tom Mitchell
Distinguishing Natural Language Processes On The Basis Of Fmri-Measured Brain Activation, Francisco Pereira, Marcel Just, Tom Mitchell
Marcel Adam Just
No abstract provided.
Biorthogonal Wavelets With Certain Regularities, Tian-Xiao He
Biorthogonal Wavelets With Certain Regularities, Tian-Xiao He
Tian-Xiao He
In this paper, we will discuss the construction of biorthogonal wavelets that possess the largest possible regularities and required vanishing moments. For the sake of applications, we also give a general Daubechies’ iteration method of constructing biorthogonal wavelets by using biorthogonal splines.
Graptolite Macroevolution: Phylogenetic Analysis And Testing Foundation Hypotheses Of Directional Change, Daniel Goldman
Graptolite Macroevolution: Phylogenetic Analysis And Testing Foundation Hypotheses Of Directional Change, Daniel Goldman
Daniel Goldman
Funding agency: National Science Foundation Amount: $117,107.00 Year: 2001/4 yrs
Preparation And Some Physical Properties Of Tetradymite-Type Sb2te3 Single Crystals Doped With Cds., P. LošŤÁK, Č. Drašar, A. Krejc ̆ Ova, L. Beneš, Jeffrey Dyck, W. Chen, C. Uher
Preparation And Some Physical Properties Of Tetradymite-Type Sb2te3 Single Crystals Doped With Cds., P. LošŤÁK, Č. Drašar, A. Krejc ̆ Ova, L. Beneš, Jeffrey Dyck, W. Chen, C. Uher
Jeffrey Dyck
Single crystals of Sb2Te3 doped with CdS were prepared by a modified Bridgman method from the elements Sb and Te of 5N purity and the CdS compound of 4.5N purity. Samples were characterized by X-ray diffraction and by measurement of reflectance in the plasma resonance frequency region at room temperature. Furthermore, we made measurements of temperature dependence of the electrical resistivity, Hall and Seebeck coefficients, and thermal conductivity in the temperature range of 4.2–300K. In the process of crystal growth, CdS dissociated and it was assumed that the Cd-atoms formed substitutional defects in the Sb-sublattice (CdSb′) while the S-atoms formed …
Ima Journal Of Management Mathematics,, Ron Buckmire, David Edwards
Ima Journal Of Management Mathematics,, Ron Buckmire, David Edwards
Ron Buckmire
No abstract provided.
Using Flash Animation And Streaming Video For Laboratory/Lecture Demonstrations In Large Enrollment Courses, Mark Anderson
Using Flash Animation And Streaming Video For Laboratory/Lecture Demonstrations In Large Enrollment Courses, Mark Anderson
Mark R. Anderson
No abstract is currently available.
Gyroscope Precession And General Relativity, Br Holstein
Gyroscope Precession And General Relativity, Br Holstein
Barry R Holstein
Precession of a gyroscope in the presence of a gravitational field is of considerable interest, on account of the soon to be launched satellite test and because of its connection to Mach's principle. Nevertheless, this topic is not generally covered in the curriculum because of the mathematical sophistication required. We examine some of the simple physics involved and argue that by examining simple graviton-elementary particle couplings one can easily understand this phenomenon.
Synthesis And High Temperature Thermoelectric Properties Of N-Type Baynixco4-Xsb12., X. Tang, L. Chen, T. Goto, Jeffrey Dyck
Synthesis And High Temperature Thermoelectric Properties Of N-Type Baynixco4-Xsb12., X. Tang, L. Chen, T. Goto, Jeffrey Dyck
Jeffrey Dyck
Single-phase filled skutterudite compounds BayNx Co4-xSb12 (x=0-0.1, y=0-0.4) were synthesized by a two-step solid state reaction. Effects of Ba filling fraction and Ni content on the thermoelectric properties of n-type Ba yNixCo4-xSb12 were investigated. Thermal conductivity decreased with increasing Ba filling fraction and temperature. When barium filling fraction (y) was fixed at 0.3, the thermal conductivity decreased with increasing Ni content, and reached a minimum value at about x=0.05. Electron concentration and electrical conductivity increased with increasing Ba filling fraction and Ni content. Seebeck coefficient increased with increasing temperature, and decreased with increasing Ba filling fraction and Ni content. A …
Intrinsically N-Linked Graphs, Ramin Naimi, Erica Flapan, Joel Foisy, James Pommersheim
Intrinsically N-Linked Graphs, Ramin Naimi, Erica Flapan, Joel Foisy, James Pommersheim
Ramin Naimi
No abstract provided.
Committee On Climate Change And Sustainable Development: 2000 Annual Report, John Dernbach
Committee On Climate Change And Sustainable Development: 2000 Annual Report, John Dernbach
John C. Dernbach
No abstract provided.
Metafam: A Unified Classification Of Protein Families. Ii. Schema And Query Capabilities, Elizabeth Shoop, K. Silverstein, Et Al
Metafam: A Unified Classification Of Protein Families. Ii. Schema And Query Capabilities, Elizabeth Shoop, K. Silverstein, Et Al
Elizabeth Shoop
No abstract provided.
Thermoelectric Properties Of Yb-Filled And Sn-Compensated Skutterudites ., Jihui Yang, Gregory Meisner, Wei Chen, Jeffrey Dyck, Ctirad Uher
Thermoelectric Properties Of Yb-Filled And Sn-Compensated Skutterudites ., Jihui Yang, Gregory Meisner, Wei Chen, Jeffrey Dyck, Ctirad Uher
Jeffrey Dyck
The effect of alloying tin on the antimony site of ytterbium-filled skutterudites is examined. We performed measurements of Hall effect, electrical resistivity, Seebeck coefficient and thermal conductivity on the series Yb0.5Co4Sb12-x Snx, with x=0.5, 0.6, 0.8 and 0.83. We find that the substitution of tin does not alter the position of the Fermi level with respect to the conduction band of these heavily doped semiconducting samples, but rather it gives rise to a p-type band. Experimental data for x=0.83 can be understood in the context of a two-carrier electrical conduction. Thermal conductivity of these ytterbium-filled skutterudites is significantly suppressed with …
Geomagnetic Field Behavior Before And After The Kauai Reverse-Normal Polarity Transition, Scott Bogue
Geomagnetic Field Behavior Before And After The Kauai Reverse-Normal Polarity Transition, Scott Bogue
Scott Bogue
New paleomagnetic results from 4 m.y. old lava flows from Kauai, Hawaii, suggest that strong poloidal field is associated with an unusual state of the geodynamo that follows attempts at polarity reversal (successful or not). The new data comprise 50 paleomagnetic sites from superposed lava flows occurring just below and above the Kauai reverse-normal polarity transition. A composite record of 45 distinct field determinations was constructed by combining sites that record similar ancient field and correlating them to previously published results from Kauai. Of the 45 data, 25 include paleointensity estimates derived from double-heating experiments. A comparison of the composite …
Improved 3d Modeling Of Complex Fault Geometries Using Poly3d, An Elastic Boundary Element Code, Phillip Resor, D Pollard, F Maerten, L Maerten, J Muller, A Aydin
Improved 3d Modeling Of Complex Fault Geometries Using Poly3d, An Elastic Boundary Element Code, Phillip Resor, D Pollard, F Maerten, L Maerten, J Muller, A Aydin
Phillip G Resor
Recent advances in geologic mapping, aftershock location, and reflection seismology allow geoscientists to image surface and subsurface structures with greater precision. These images demonstrate that earthquake ruptures typically occur along faults or fault systems that display complex 3D geometries. Poly3D, a 3D boundary element code and user interface, enables the integration of these varied data sets to constrain fault geometry and accurately models the complex geometries, limited only by data precision and computing power. Poly3D is based on the analytical solution for the elastic boundary value problem of an angular dislocation in a half space composed of a homogeneous and …
Transport And Magnetic Properties Of Co1-Xnixsb3 With X Less Than 0.01, Jeffrey Dyck, W. Chen, Y. Yang, G. Meisner, C. Uher
Transport And Magnetic Properties Of Co1-Xnixsb3 With X Less Than 0.01, Jeffrey Dyck, W. Chen, Y. Yang, G. Meisner, C. Uher
Jeffrey Dyck
The filled skutterudite compounds based on the binary skutterudite CoSb3 are currently being investigated for their potential application as thermoelectric materials. One route to optimization of these compounds is by doping on the Co site. An obvious candidate for an n-type dopant is Ni, because it has one more electron in its valence shell than Co. We present electrical resistivity, thermopower, Hall effect and magnetic susceptibility measurements on polycrystalline, n-type Co1-xNixSb3 with x less than 0.01. A model which takes into account conduction of electrons residing in the conduction band in addition to hopping conduction within an impurity "band" formed …
Letter To The Editor, Stan Wagon
From Rio To Johannesburg: Implementing Sustainable Development At The Global And Local Scale, John Dernbach
From Rio To Johannesburg: Implementing Sustainable Development At The Global And Local Scale, John Dernbach
John C. Dernbach
No abstract provided.
Metal Binding Studies With Macrocyclic Hexathioethers: Transition Metal Complexes Of 22s6 And 20s6”,, Gregory Grant, Christopher Brandow, Chrystal Bruce, Mark Brandt, Rebecca Kirk, Sabrina Lee, Kerry Robinson, Larry Mehne
Metal Binding Studies With Macrocyclic Hexathioethers: Transition Metal Complexes Of 22s6 And 20s6”,, Gregory Grant, Christopher Brandow, Chrystal Bruce, Mark Brandt, Rebecca Kirk, Sabrina Lee, Kerry Robinson, Larry Mehne
Chrystal D. Bruce
No abstract provided.
Comment On "The Van Der Waals Interaction," By Barry R. Holstein [Am. J. Phys. 69 (4), 441-449 (2001)], Br Holstein
Comment On "The Van Der Waals Interaction," By Barry R. Holstein [Am. J. Phys. 69 (4), 441-449 (2001)], Br Holstein
Barry R Holstein
No abstract provided.