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Is there a bottom-up cascade on the assemblages of trees, arboreal insects and spiders in a semiarid Caatinga?
Predator–prey dynamics regulate the community structure of arthropods and may be affected by changes in their habitat. Bottom-up effects influence the distribution of arboreal insects changing, in turn, the availability of resources and shelter for the spider assemblage. This study examines the effect of habitat structure (tree richness and density) on the assemblages of herbivorous insects a...


Studying the performance of solid/perforated pin-fin heat sinks using entropy generation minimization
Heat transfer and pressure drop characteristics of a set of pin-fins with uniform heat flux were investigated experimentally and numerically. Test set-up was designed to assess the effects of mass flow rate, fin height, and fin density on convection heat transfer and pressure drop. In the numerical investigation, the flow field of various design parameters of the heat sink was simulated. It was...
Experimental analysis for the transient temperature profiles of a fiber-enhanced polyalcohol binary system
Polyalcohol has poor heat conduction performance. A fiber-enhanced polyalcohol binary system tightly combines polyalcohol with a copper fiber net to improve its heat conduction performance. Compared to a polyalcohol binary system PE/TRIS without fibers, the fiber-enhanced polyalcohol PE/TRIS system shows quicker response to the external energy input. In the binary system without fibers, more in...


Function Transformation of Government from the Low-carbon Economy Perspective: Model, Path and Integration
With the development of the world economy and the unsustainable use of resources, the environment is becoming devastating and has serious problems. In order to strengthen environmental management, it’s time to develop the low-carbon economy. Government as the main body, it should transform its functions actively to promote the development of the low-carbon economy in the whole society. This a...
Measuring the Impact of Background Checks on Reducing Crime in Higher Education
Responding to a variety of constituent pressures in recent years, a number of states in the U. S. have enacted legal requirements that their public universities conduct background checks on prospective new employees. The assumption behind these mandates is that background checks reduce crime on campus. This study will attempt to test that assumption by utilizing data gathered under the reportin...


Women Education and Political Participation in the South West Region of Cameroon: An Empirical Analysis
The paper empirically examined the relationship between education level and political participation of women of the South West region of Cameroon. The indices of political participation include the following: membership of political party, voting in elections, occupation of political post, means of occupation of political post and level of occupation of political post. Multistage cluster sampli...
Analysis on the Influence of Policy Factors in Innovating Behavior for Chinese Orphan Drugs’ Industry
Because of the small target market and poor profitability of Orphan Drug, it is difficult to effectively encourage the R&D and production Behavior of the Industry by the market mechanisms alone. So that, it is necessary to implement the incentive policy for Orphan Drug in order to stimulate the innovative behavior. Basing on the analysis of domestic market and foreign and innovative incenti...

Measuring the Impact of Student Background Checks on Reducing Crime in Higher Education
There is general agreement in the literature that student-on-student crime accounts for the overwhelming majority of crimes committed on campus in the United States (Dickerson, 2008). checks on students as a requirement of admission is one tool that may prove effective in reducing crime on campus. So far only one state, North Carolina, has enacted a modified version of such a requirement for ad...
Competing orders in a three-orbital model of cuprates: Is there a loop-current order?
Apart from the prominent d-wave superconductivity in cuprates, there are competing phases that are believed to be responsible for the pseudogap normal state. Proposals range from spin and charge density waves (SDW and CDW) at finite momentum to the more exotic loop-current order (LCO) at zero momentum. The latter is however beyond the scope of the effective single-orbital Zhang-Rice model. ing ...

Experimental study of thrusts of a cylindrical linear synchronous motor with an HTS coil magnet as the excitation system
The thrusts of a cylindrical linear synchronous motor with an HTS coil magnet as the excitation system were measured the first time and will be presented in this paper. The HTS coil magnet is made of second generation YBCO wire. The coil is a double pancake coil consisting of 34 turns wire. The inner diameter, outer diameter and height of the coil are 20, 30 and 13 mm, respectively. The armatur...
Magnetic Shielding Performance of Superconducting YBCO Thin Film in a Multilayer Device Structure
Magnetic shielding performance of superconducting YBaCu2O7-x (YBCO) thin film on an YBCO microbridge was analyzed in a multilayer structure. A sandwich type multilayer structure was fabricated onto a single crystal (100) SrTiO3 (STO) substrate in the form of YBCO/STO/YBCO by depositing a thin STO interlayer in between two YBCO layers. The top YBCO was patterned as 20 μm width meander-type micr...

Nanostructuring of high-TC superconductors via masked ion irradiation for efficient ordered vortex pinning
We studied vortex dynamics in a YBa2Cu3O7−δ thin film with two different sources of pinning: intrinsic random defects and an artificial square array of defects created by masked ion irradiation. We study commensurability effects between the vortex lattice and the pinning array as a function of the vortex velocity v and the temperature. We find that at low temperatures the commensurability ef...
Dynamics of vortex matter in YBCO sub-micron bridges
We have developed a fabrication process that allows us to realize pure YBCO nanowires displaying robust superconductivity at widths w as low as 160nm. We can modify the process in order to maintain a Au protective layer. This allows us to scale our nanowires even further to widths as low as 50nm. We have studied how the presence of vortices and the occurrence of phase slips affect the transport...
YBa2Cu3O7−δ nanorings to probe fluxoid quantization in High Critical Temperature Superconductors
We have realized YBa2Cu3O7−δ (YBCO) nanorings and measured the magnetoresistance R ( B ) close to the superconducting transition. The large oscillations that we have measured can be interpreted in terms of vortex dynamics triggering the nanowires to the resistive state. The Fast Fourier Transform spectrum of the magnetoresistance oscillations shows a single sharp peak for nanorings with...
High-fidelity quantum state transfer using Cooper-pair box qubits
We propose a theoretical scheme to implement high-fidelity quantum state transfer using Cooper-pair box (CPB) qubits. By analyzing the leakage error, an appropriate system parameter is chosen to optimize the level anharmonicity of the CPB. Under the drivings of the applied microwave pulses, quantum states can be transferred reversibly between any selected pair of qubits arrayed in a circuit QED...