1,195,125 research outputs found
Quench characteristics of a Cu-Stabilized 2G HTS conductor
No full textThe prospect of medium/high field superconducting magnets using 2G HTS tapes is approaching to reality with continued enhancement in the performance of these conductors. Direct measurements of 1d adiabatic quench initiation and propagation of a Cu-stabilized 2G conductor have been carried out with spatial-temporal recording of temperature and voltage following the deposition of various local heat pulses to the conductor at different temperatures between 40K and 64K carrying different transport currents. It was found that the stabilizer-free 2G tape maintains the unique characteristics previously measured in non-stabilized tape of increasing MPZ with transport current and higher quench energy at lower temperatures. The minimum quench energy, minimum propagation zone (MPZ) length are determined as a function of temperature and transport current. The change in MPZ size is investigated with measured temperature dependent E-J characteristics. The results add more detail to help understand the unique characteristics of increasing MPZ with transport current and lower temperatures
Mellin-Transform-Based Performance Analysis of FFH -ary FSK Using Product Combining for Combatting Partial-Band Noise Jamming
No full textGoing Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Scanning tunneling spectroscopy on YBa2Cu3Oy/PrBa2Cu3Oy/YBa2Cu3Oy sandwiched junctions and YBa2Cu3Oy/Y0.5Pr0.5Ba2Cu3Oy superlattices
No full textMemorandum from A. E. Demaray to E. C. Finney
No full textFour letters of correspondence about the purchase of Bright Angel Trail between A. E. Demaray, Acting Director of the Grand Canyon National Park; E. C. Finney, Department of the Interior First Assistant Secretary; Carl T. Hayden, Representative (AZ); and Stephen T. Mather, Director of the National Park Service
Monte Carlo studies of model Langmuir monolayers
No full textThis paper examines some of the basic properties of a model Langmuir monolayer, consisting of surfactant molecules deposited onto a water subphase. The surfactants are modeled as rigid rods composed of a head and tail segment of diameters sigma (hh) and sigma (tt), respectively. The tails consist of n(t)approximate to4-7 effective monomers representing methylene groups. These rigid rods interact via site-site Lennard-Jones potentials with different interaction parameters for the tail-tail, head-tail, and head-head interactions. In a previous paper, we studied the ground-state properties of this system using a Landau approach. In the present paper, Monte Carlo simulations were performed in the canonical ensemble to elucidate the finite-temperature behavior of this system. Simulation techniques. incorporating a system of dynamic filters, allow us to decrease CPU time with negligible statistical error. This paper focuses on several of the key parameters, such as density, head-tail diameter mismatch, and chain length, responsible for driving transitions from uniformly tilted to untilted phases and between different tilt-ordered phases. Upon varying the density of the system, with sigma (hh) = sigma (tt), we observe a transition from a tilted (NNN)-condensed phase to an untilted-liquid phase and, upon comparison with recent experiments with fatty acid-alcohol and fatty acid-ester mixtures [M. C. Shih, M. K. Durbin, A. Malik, P. Zschack, and P. Dutta, J. Chem. Phys. 101. 9132 (1994): E. Teer, C. M. Knobler, C. Lautz, S. Wurlitzer, J. Kildae, and T. M. Fischer, J. Chem. Phys. 106. 1913 (1997)], we identify this as the L-2'/Ov-L-1, phase boundary. By varying the head-tail diameter ratio, we observe a decrease in T-c with increasing mismatch. However, as the chain length was increased we observed that the transition temperatures increased and differences in T-c due to head-tail diameter mismatch were diminished. In most of the present research, the water was treated as a hard surface, whereby the surfactants are only allowed to move within the plane of this surface. However, we have also utilized a more realistic model for the surfactant-water interactions, developed by Karaborni and Toxvaerd, in order to examine the role which the coupled effects of head group size and head group-subphase interactions plays in determining tilt ordering and on the stability of the monolayer. It is found that increasing the head diameter results in a widening of the air-water interface and an associated destruction of orientational order. Furthermore, the onset of capillary waves at lower temperatures for larger head diameters implies that the L-2-L-1 phase boundary for acids and acetates should move to lower temperatures relative to the L-2'/Ov-L-1 phase boundary for alcohols acid esters. This feature has yet to be seen in experimental studies.PT: J; CR: BELOHOREC P, UNPUB BELOHOREC P, 1997, THESIS U GUELPH BIBO AM, 1990, ADV MATER, V2, P309 BOCKER J, 1992, J PHYS CHEM-US, V96, P9915 DURBIN MK, 1997, J CHEM PHYS, V106, P8216 HAAS FM, 1995, J CHEM PHYS, V102, P2960 HAAS FM, 1996, J PHYS CHEM-US, V100, P15290 HARRIS J, 1988, J CHEM PHYS, V89, P5898 KAGANER VM, 1999, REV MOD PHYS, V71, P779 KARABORNI S, 1992, J CHEM PHYS, V96, P5505 KARABORNI S, 1992, J CHEM PHYS, V97, P5876 KNOBLER CM, 1992, ANNU REV PHYS CHEM, V43, P207 LAUTZ C, 1997, J CHEM PHYS, V106, P7448 LU JR, 1993, J PHYS CHEM-US, V97, P8012 LU JR, 1993, LANGMUIR, V9, P2417 OPPS SB, 1999, THESIS U GUELPH OPPS SB, 2000, J CHEM PHYS, V113, P339 RAMOS S, 1999, J CHEM PHYS, V110, P7021 SCHERINGER M, 1992, J CHEM PHYS, V96, P2269 SCHMID F, 1997, J CHEM PHYS, V106, P3757 SCHMID F, 1997, PHYS REV E B, V55, P5774 SHIH MC, 1994, J CHEM PHYS, V101, P9132 STADLER C, 1999, J CHEM PHYS, V110, P9697 STADLER C, 1999, PHYS REV E, V59, P4248 TEER E, 1997, J CHEM PHYS, V106, P1913; NR: 25; TC: 1; J9: PHYS REV E; PN: Part 1; PG: 12; GA: 424CQSource type: Electronic(1
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
E-commerce application With Angular and C#
No full textAn E-commerce web project using C# has been developed. Ecommerce is the buying and selling of goods and services over the Internet. This project was developed under the concept of a company that sells various types of furiture.In order to create this application, ASP.NET Core, Angular were used for back-end and front-end respectively.Visual Studio Code was used for code editing. SQLite, Redis, and serveral packages were installed. To support this project, In addition, Bootstrap for simplifying the development of the web pages and Stripe for taking payment were used.BSc/BAComputer Scienc
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