389 research outputs found
THE DIFFERENCE OF ELECTROMYOGRAPHIC ACTIVITIES OF VASTUS MUSCLE IN OPEN AND CLOSED KINETIC CHAIN EXERCISES BETWEEN SUBJECTS WITH AND WITHOUT PATELLOFEMORAL PAIN SYNDROME
In this study, ten normal subjects and ten patients with patellofemoral pain syndrome (PFPS) were enrolled for knee isokinetic exercise test and closed kinetic chain exercise by squatting-standing respectively. Surface electromyography was applied to vastus medialis obliquus (VMO) and vastus lateralis (VL) muscles during exercise. According to the integrated electromyography, VMO/VL ratio was calculated by dividing normalized EMG of VMO by those of VL. The statistic results revealed that the VMO/VL ratio of patients with PFPS was significantly lower than those of normal subjects during knee isokinetic exercise (p=0.047). However, there is no statistic difference in VMO/VL ratio between the subjects with and without PFPS during closed kinetic chain exercise (p=0.623)
Pallet Management System: A Study of the Implementation of UID/RFID Technology for Tracking Shipping Materials within the Department of Defense Distribution Network
Sponsored Report (for Acquisition Research Program)The purpose of this MBA project is to identify the typical pallet utilization for the Defense Distribution Depot San Joaquin (DDJC) shipments to the Defense Distribution Depot San Diego (DDDC). That information will be used as the basis for suggesting a standardized reutilization management system for wood and non-wood pallets. This project will analyze the inclusion of Radio Frequency Identification and Unique Item Identification in conjunction with bar code technology for the improvement of asset visibility within the Department of Defense''s supply network.Naval Postgraduate School Acquisition Research ProgramApproved for public release; distribution is unlimited
Optimised limit for polarimetric calibration of fully polarised SAR systems
The optimised limit for polarimetric calibration of fully polarised synthetic aperture radar systems is derived by establishing an error model as a function of cross-talk, channel imbalance and system noise. Compared with noise equivalent sigma zero, the polarimetric error below the optimised limit is too small to affect the signal of cross-polarised channel. Thus, polarimetric calibration could be relaxed or even ignored in this case. With the backscatter model, optimised limits for cross-talk and channel imbalance at X, C and L-bands are presented. Moreover, when ignoring channel imbalance, the limit for cross-talk is given in a quantitative way. These results are very useful in practice, allowing significant reduction in calibration cost
Distribution and density of the partition function zeros for the diamond-decorated Ising model
Exact renormalization map of temperature between two successive decorated
lattices is given, and the distribution of the partition function zeros in the
complex temperature plane is obtained for any decoration-level. The rule
governing the variation of the distribution pattern as the decoration-level
changes is given. The densities of the zeros for the first two
decoration-levels are calculated explicitly, and the qualitative features about
the densities of higher decoration-levels are given by conjecture. The Julia
set associated with the renormalization map is contained in the distribution of
the zeros in the limit of infinite decoration level, and the formation of the
Julia set in the course of increasing the decoration-level is given in terms of
the variations of the zero density.Comment: 8 pages,8figure
Population Monte Carlo algorithms
We give a cross-disciplinary survey on ``population'' Monte Carlo algorithms.
In these algorithms, a set of ``walkers'' or ``particles'' is used as a
representation of a high-dimensional vector. The computation is carried out by
a random walk and split/deletion of these objects. The algorithms are developed
in various fields in physics and statistical sciences and called by lots of
different terms -- ``quantum Monte Carlo'', ``transfer-matrix Monte Carlo'',
``Monte Carlo filter (particle filter)'',``sequential Monte Carlo'' and
``PERM'' etc. Here we discuss them in a coherent framework. We also touch on
related algorithms -- genetic algorithms and annealed importance sampling.Comment: Title is changed (Population-based Monte Carlo -> Population Monte
Carlo). A number of small but important corrections and additions. References
are also added. Original Version is read at 2000 Workshop on
Information-Based Induction Sciences (July 17-18, 2000, Syuzenji, Shizuoka,
Japan). No figure
Classical dynamics of a two-species Bose-Einstein condensate in the presence of nonlinear maser processes
The stability analysis of a generalized Dicke model, in the semi-classical
limit, describing the interaction of a two-species Bose-Einstein condensate
driven by a quantized field in the presence of Kerr and spontaneous parametric
processes is presented. The transitions from Rabi to Josephson dynamics are
identified depending on the relative value of the involved parameters.
Symmetry-breaking dynamics are shown for both types of coherent oscillations
due to the quantized field and nonlinear optical processes.Comment: 12 pages, 5 figures. Accepted for publication as chapter in
"Spontaneous Symmetry Breaking, Self-Trapping, and Josephson Oscillations in
Nonlinear Systems
A quasi-steady state mathematical model of an integrated ground source heat pump for building space control
[EN] This paper is concerned with the development of a mathematical model, capable of describing the quasisteady
state performance of an integrated ground source heat pump, which is used for heating and
cooling of an institutional building located in a Mediterranean climate. The model is structured on functional
basis according to the heat pump vapour compression or primary circuit, a secondary ground loop
circuit and a secondary building loop circuit. Heat pump heating and cooling capacities, as well as COP,
are considered to be dependent variables and are estimated in the model using performance fitted maps.
Independent variables include: compressor speed, circulation pump speeds, ground loop return temperature
and building circuit return temperature. The model is validated using data from a full-scale ground
source heat pump installation. The validated model is used to examine system capacity and performance
sensitivity to different control optimisation strategies, including set-point control of room air temperature,
room air bandwidth temperature, building loop return water temperature and building loop return
bandwidth temperature.This work was supported under the FP7 programme Advanced ground source heat pump systems for heating and cooling in Mediterranean climates (GROUND-MED FP7-ENERGY-2007-2-TREN-218895)Corberán Salvador, JM.; Finn, D.; Montagud Montalvá, CI.; Murphy, F.; Edwards, K. (2011). A quasi-steady state mathematical model of an integrated ground source heat pump for building space control. Energy and Buildings. 43(1):82-92. https://doi.org/10.1016/j.enbuild.2010.08.017S829243
Noncommutative massive Thirring model in three-dimensional spacetime
We evaluate the noncommutative Chern-Simons action induced by fermions
interacting with an Abelian gauge field in a noncommutative massive Thirring
model in (2+1)-dimensional spacetime. This calculation is performed in the
Dirac and Majorana representations. We observe that in Majorana representation
when goes to zero we do not have induced Chern-Simons term in the
dimensional regularization scheme.Comment: Accepted to Phys. Rev. D; 9 pages, Revtex4, no figures, references
added, minor improvements, Eq.31 correcte
QCD Glueball Regge Trajectories and the Pomeron
We report a glueball Regge trajectory emerging from diagonalizing a confining
Coulomb gauge Hamiltonian for constituent gluons. Using a BCS vacuum ansatz and
gap equation, the dressed gluons acquire a mass, of order 800 , providing
the quasiparticle degrees of freedom for a TDA glueball formulation. The TDA
eigenstates for two constituent gluons have orbital, , excitations with a
characteristic energy of 400 revealing a clear Regge trajectory for
, where is the total (sum) gluon spin.
Significantly, the glueball spectrum coincides with the Pomeron given
by . Finally, we also ascertain that lattice data
supports our result, yielding an average intercept of 1.1 in good agreement
with the Pomeron.Comment: 10 pages, 4 ps figure
Theranostic nanoparticles enhance the response of glioblastomas to radiation
YesDespite considerable progress with our understanding of glioblastoma multiforme (GBM) and the precise
delivery of radiotherapy, the prognosis for GBM patients is still unfavorable with tumor recurrence due
to radioresistance being a major concern. We recently developed a cross-linked iron oxide nanoparticle
conjugated to azademethylcolchicine (CLIO-ICT) to target and eradicate a subpopulation of quiescent
cells, glioblastoma initiating cells (GICs), which could be a reason for radioresistance and tumor relapse.
The purpose of our study was to investigate if CLIO-ICT has an additive therapeutic effect to enhance the
response of GBMs to ionizing radiation.
Methods: NSG™ mice bearing human GBMs and C57BL/6J mice bearing murine GBMs received
CLIO-ICT, radiation, or combination treatment. The mice underwent pre- and post-treatment magnetic
resonance imaging (MRI) scans, bioluminescence imaging (BLI), and histological analysis. Tumor
nanoparticle enhancement, tumor flux, microvessel density, GIC, and apoptosis markers were compared
between different groups using a one-way ANOVA and two-tailed Mann-Whitney test. Additional NSG™
mice underwent survival analyses with Kaplan–Meier curves and a log rank (Mantel–Cox) test.
Results: At 2 weeks post-treatment, BLI and MRI scans revealed significant reduction in tumor size for
CLIO-ICT plus radiation treated tumors compared to monotherapy or vehicle-treated tumors.
Combining CLIO-ICT with radiation therapy significantly decreased microvessel density, decreased
GICs, increased caspase-3 expression, and prolonged the survival of GBM-bearing mice. CLIO-ICT
delivery to GBM could be monitored with MRI. and was not significantly different before and after
radiation. There was no significant caspase-3 expression in normal brain at therapeutic doses of
CLIO-ICT administered.
Conclusion: Our data shows additive anti-tumor effects of CLIO-ICT nanoparticles in combination with
radiotherapy. The combination therapy proposed here could potentially be a clinically translatable
strategy for treating GBMs
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