Miracle-dz/UniFAR-FTUs huggingface dataset:
C D ] 1 0 Fe b 20 10 Chaotic Hamiltonian systems revisited : Survival probability

We consider the dynamical system described by the area–preserving standard mapping. It is known for this system that P (t), the normalized number of recurrences staying in some given domain of the phase space at time t (so-clled ”survival probability”) has the power–law asymptotics, P (t) ∼ t . We present new semi–phenomenological arguments which enable us to map the dynamical system near the chaos border onto the effective ”ultrametric diffusion” on the boundary of a tree– like space with hierarchically organized transition rates. In the frameworks of our approach we have estimated the exponent ν as ν = ln 2/ ln(1 + rg) ≈ 1.44, where rg = ( √ 5 − 1)/2 is the critical rotation number.
Mechanical and electrical properties of electrospun CNT/PVDF nanofiber for micro-actuator applications

Electrospun polyvinylidene fluoride (PVDF)-containing carbon nanotubes (CNT) were prepared for use in fabricating actuator materials. Actuating displacement was measured in an electrochemical environment. The electrospun nanofibers were arranged using a drum-type collector, and morphology was investigated using a field emission-scanning electron microscope. The uniformity of dispersion of CNT in the PVDF nanofibers was monitored by electron probe X-ray micro-analysis. Tensile strength and electrical resistivity results were used as an indication of the state of alignment. The electrospun CNT/PVDF nanofiber sheets exhibited better mechanical and electrical properties in the arranged direction. The efficiency and electrical capacities of electrospun CNT/PVDF nanofiber sheet were compared with those of cast PVDF sheets for use in actuator applications in electrochemical environments. The electrospun CNT/PVDF nanofiber sheets exhibited much better actuator performance than PVDF sheets, which are attributed to their superior electrical properties. Highlights (1) The interfacial durability of CNT/PVDF nanofibers was enhanced to increase contact area by reinforcing CNT. (2) The efficiency of CNT/PVDF actuators was improved due to interfacial properties. (3) Thin thickness drum-type collector was made to enhance nanofiber alignment. (4) The arranged CNT/PVDF nanofibers exhibited better mechanical and actuating displacements.
Environmental Barriers to Participation of Preschool Children with and without Physical Disabilities

Environment plays a vital role in affecting participation of young children in home, school, and community. Knowledge of environmental barriers helps to develop solutions or strategies that enable participation. The study compared the environmental barriers perceived by parents of preschool children with physical disabilities (PD, n = 142) and with typical development (TD, n = 192) in Taiwan. Parents identified environmental barriers by structured interview using the Chinese version of the Child and Adolescent Scale of Environment (CASE-C). The CASE-C is an 18-item measure of the impact of problems with physical, social, and attitudinal environmental features. Differences between the PD and TD groups in the summary scores for the CASE-C and the percentages of parents who perceived a problem for each item were examined by the analysis of covariance (ANCOVA) and Chi-square test. Parents of children with PD more often identified barriers related to family resources and community programs or services, social attitudes, assistance and supports outside of home, physical design of home and community, transportation, and assistive devices or equipment. Greater impacts of barriers were also reported by parents of preschool children with PD. Our findings provide evidence of environmental barriers that inform practice and policies to modify the barriers and provide an accessible and inclusive environment for families with young children.
Fixed and Modifiable Correlates of Drug-Eluting Stent Thrombosis From a Large All-Comers Registry: Insights From ADAPT-DES

Background—Previous studies evaluating correlates of stent thrombosis (ST) have included mostly patients with bare metal stents and early-generation drug-eluting stents (DES) and have not systematically evaluated the role of intravascular ultrasound–guided stenting and high platelet reactivity on clopidogrel. The purpose of this study was to evaluate the frequency and correlates of ST in patients receiving DES, specifically examining the impact of risk factors modifiable by physician and patient behavior. Methods and Results—Assessment of Dual Anti-platelet Therapy With Drug-Eluting Stents (ADAPT-DES) was a multicenter, prospective study in patients undergoing successful coronary intervention with DES in whom routine platelet reactivity testing was performed. Definite or probable ST occurred in 92 (1.1%) of 8582 patients within 2 years. Independent baseline correlates of ST included presentation with an acute coronary syndrome (hazard ratio [HR]=1.81, P=0.01), insulin-treated diabetes mellitus (HR=1.91, P=0.02), previous myocardial infarction (HR=1.75, P=0.02), and peripheral arterial disease (HR=2.01, P=0.01). Independent treatment-related correlates included use of early generation DES (HR=1.75, P=0.02), no procedural intravascular ultrasound guidance (HR=1.75, P=0.04), and premature discontinuation of dual antiplatelet therapy (HR=2.67, P=0.003); high platelet reactivity on clopidogrel trended as a correlate of ST (HR=1.49, P=0.08). The 2-year risk of ST ranged from 0.3% to 10.0% when 0 to 3 modifiable risk factors were present. Conclusions—After successful DES implantation, ST occurred within 2 years in 1.1% of patients and was strongly associated with fixed and modifiable risk factors. The frequency of ST may be reduced with intravascular ultrasound –guided stenting, assiduous adherence to dual antiplatelet therapy, and adequate P2Y12 platelet receptor inhibition. Clinical Trial Registration—URL: http://www.clinicaltrials. gov. Unique identifier: NCT00638794.
Updated International Clinical Recommendations on Scar Management: Part 1—Evaluating the Evidence

BACKGROUND There is an ongoing need to standardize scar management by establishing safe and effective treatment options that can be applied in routine clinical practice. OBJECTIVE To review available data on methods for preventing and treating cutaneous scarring. MATERIALS AND METHODS Relevant scientific literature was identified through a comprehensive search of the MEDLINE database. Additional data and published studies were submitted for consideration by members of the International Advisory Panel on Scar Management. RESULTS One of the most significant advances in scar management over the past 10 years has been the broader application of laser therapy, resulting in a shift in status from an emerging technology to the forefront of treatment. Accumulated clinical evidence also supports a greater role for 5-fluourouracil in the treatment of hypertrophic scars and keloids, particularly in combination with intralesional corticosteroids. Encouraging data have been reported for newer therapies, including bleomycin, onion extract–containing preparations, imiquimod, and mitomycin C, although methodologic limitations in available studies merit consideration. In general, clinical and aesthetic outcomes seem to be enhanced by a combination approach to treatment. CONCLUSION Advances in therapeutic options and new study data necessitate a revision of algorithms for the prevention and management of cutaneous scarring.
Vibratory Analysis of a Doubly Clamped Wavy Single Walled Carbon Nanotube based Nano Mechanical Sensors

In this paper the vibration signature of single walled carbon nano tube (SWCNT) with waviness along its axis which is doubly clamped at a source and a drain and is used to represent a single mode resonator has been analyzed. In most of previous study, experimentally measured resonance frequencies of CNTs along with classical beam theory for straight beams CNT have used. However, from photo micrographic images of CNTs, it is clear that they are not straight, and that they have some significant surface deviation like waviness or curvature associated with them. In the present study; the vibration response analysis of carbon nanotubes with waviness treated as thin shells has been done. The results showed the sensitivity of the SWCNT having different waviness to different masses (attached at the centre of a doubly clamped SWCNT) and different lengths. The sensitivity of resonant frequency shifts to tube length and waviness have been demonstrated. This study explores the effect of waviness on the mass sensitivity of a nano mechanical resonator.
Stoichiometry and microstructural effects on electrical conduction in pulsed dc sputtered vanadium oxide thin films

Vanadium oxide thin films were deposited using pulsed direct current (dc) magnetron sputtering in an atmosphere containing argon and oxygen. The total pressure was varied from 2.5 to 15 mTorr, and the oxygen-to-argon ratio was varied from 2.5 to 30%. The resulting films were characterized using Rutherford backscattering spectroscopy (RBS), transmission electron microscopy (TEM), electron energy loss spectroscopy (EELS), and glancing incidence x-ray diffraction (GIXRD). Electrical resistivity was calculated from I – V curves acquired from two-point-probe measurements and thicknesses measured from bright-field TEM images of cross-sectioned samples. TEM and GIXRD were used to characterize the crystallinity of each film. A transition from nanocrystalline to amorphous growth was observed with increasing partial pressure of oxygen. In all samples, the only crystalline phase observed was cubic vanadium oxide with the sodium chloride structure. Though the cubic VO_x equilibrium phase field is limited to a maximum of x = 1.3, the cubic phase was observed with a value of x up to 2 in the present work. It was apparent from electron diffraction data that increased oxygen content correlated with an increase in the film disorder. The increase in oxygen content also corresponded with an increase in the film resistivity, which varied over 7 orders of magnitude from 1.18 × 10^−3 to 2.98 × 10^4 Ω·cm. The temperature coefficient of resistance was found to increase with increasing oxygen content from −0.1 to −3.5%/°C. A direct correlation between film disorder and temperature coefficient of resistivity (TCR) was observed and could be exploited to engineer materials with the desired TCR.
Mirtazapine in Comorbid Major Depression and Alcohol Dependence: An Open-Label Trial

Objective: This was a first pilot study evaluating the acute phase (8-week) efficacy of the antidepressant medication mirtazapine for the treatment of depressive symptoms and drinking of subjects with comorbid major depressive disorder and alcohol dependence (MDD/AD). We hypothesized that mirtazapine would demonstrate within-group efficacy for the treatment of both depressive symptoms and drinking in these subjects. Methods: We conducted a first open-label study of the second-generation antidepressant mirtazapine in 12 adult outpatient subjects with comorbid MDD/AD. The pharmacological profile of that medication is unique among antidepressants, unrelated to tricyclics or selective serotonin reuptake inhibitors. Results: Mirtazapine was well tolerated in this treatment population. Self-reported depressive symptoms decreased from 31.8 to 8.3 on the Beck Depression Inventory (BDI), a 74.0% decrease (p < .001), and drinking decreased from 33.9 to 13.3 drinks per week, a 60.8% decrease (p < .05). None of the subjects were employed full time at baseline, but 9 of the 12 (75%) were employed full time at the end the of study. Conclusions: These preliminary findings suggest efficacy for mirtazapine for treating both the depressive symptoms and excessive alcohol use of comorbid major depressive disorder and alcohol dependence. Double-blind studies are warranted to further clarify the efficacy of mirtazapine in this population.
56 78 v 2 [ gr-q c ] 2 8 Ju l 2 01 4 Super-radiance and flux conservation

The theoretical foundations of the phenomenon known as super-radiance still continues to attract considerable attention. Despite many valiant attempts at pedagogically clear presentations, the effect nevertheless still continues to generate some significant confusion. Part of the confusion arises from the fact that super-radiance in a quantum field theory [QFT] context is not the same as super-radiance (super-fluorescence) in some condensed matter contexts; part of the confusion arises from traditional but sometimes awkward normalization conventions, and part is due to sometimes unnecessary confusion between fluxes and probabilities. We shall argue that the key point underlying the effect is flux conservation, (and, in the presence of dissipation, a controlled amount of flux non-conservation), and that attempting to phrase things in terms of reflection and transmission probabilities only works in the absence of super-radiance. To help clarify the situation we present a simple exactly solvable toy model exhibiting both super-radiance and damping.
A HyperTransport-Enabled Global Memory Model For Improved Memory Efficiency (revised 08/2009)

Modern data centers esenting unprecedented demands in terms of cost and energy consumption, far outpacing architectural advances. Consequently, blade designs exhibit significant cost and power inefficiencies, particularly in the memory system. We propose a HyperTransport-enabled solution called the Dynamic Partitioned Global Address Space (DPGAS) model for seamless, efficient sharing of memory across bladeare prs in a data center, leading to significant power and cost savings. This paper presents the DPGAS model, describes HyperTransport-based hardware support for the model, and assesses this model’s power and cost impact on memory intensive applications. Overall, we find that cost savings can range from 4% to 26% with power reductions ranging from 2% to 25% across a variety of fixed application configurations using server consolidation and memory throttling. The HyperTransport implementation enables these savings with an additional node latency cost of 1,690 ns latency per remote 64 byte cache line access across the blade-to-blade interconnect.
Stress, noradrenaline, and realistic prediction of mouse behaviour using reinforcement learning

Suppose we train an animal in a conditioning experiment. Can one predict how a given animal, under given experimental conditions, would perform the task? Since various factors such as stress, motivation, genetic background, and previous errors in task performance can influence animal behaviour, this appears to be a very challenging aim. Reinforcement learning (RL) models have been successful in modeling animal (and human) behaviour, but their success has been limited because of uncertainty as to how to set meta-parameters (such as learning rate, exploitation-exploration balance and future reward discount factor) that strongly influence model performance. We show that a simple RL model whose meta-parameters are controlled by an artificial neural network, fed with inputs such as stress, affective phenotype, previous task performance, and even neuromodulatory manipulations, can successfully predict mouse behaviour in the "hole-box" - a simple conditioning task. Our results also provide important insights on how stress and anxiety affect animal learning, performance accuracy, and discounting of future rewards, and on how noradrenergic systems can interact with these processes.
3D Talking-Head Interface to Voice-Interactive Services on Mobile Phones

This paper presents a novel framework for easy creation of interactive, platform-independent voice-services with an animated 3D talking-head interface, on mobile phones. The Framework supports automated multi-modal interaction using speech and 3D graphics. The difficulty of synchronizing the audio stream to the animation is examined and alternatives for distributed network control of the animation and application logic is discussed. The ability of modern mobile devices to handle such applications is documented and it is shown that the power consumption trade-off of rendering on the mobile phone versus streaming from the server favors the phone. The presented tools will empower developers and researchers in future research and usability studies in the area of mobile talking-head applications Figure 1. These may be used for example in entertainment, commerce, health care or education.
Mixed sensitivity H∞ control of doubly fed induction doubly fed induction motor

This paper deals with a Doubly Fed Induction Machine (DFIM) of which both stator and rotor are supplied by two voltage source inverters. The study consists in elaborating a robust vector control of the machine using the mixed sensitivity H∞, approach. The mixed sensitivity H∞ theory is presented in brief, and then the robust control of the DFIM is done. Simulation results prove that the implementation of the H∞, controllers in the DFIM leads to robustness in stability and satisfying dynamic performance for stator and rotor currents, fluxes, torque and speed even when the electrical and mechanical parameters vary.
Development of electrical conductivity in PP/HDPE/MWCNT nanocomposite by melt mixing at very low loading of MWCNT

A method of developing an electrical conductivity in polypropylene (PP) with a very low loading of multiwalled carbon nanotube (MWCNT) by melt-mixing method was described. PP/high-density polyethylene (HDPE; 70/30, w/w) was melt blended simultaneously in the presence of MWCNT using two sequential heating protocol (MWCNT was first interacted with HDPE chain at 140°C followed by melt blending of PP at 200°C). Very interestingly, a cocontinuous morphology in the blend was found even for very high asymmetric composition. This has been explained in terms of barrier effect of the MWCNT dispersed selectively in the HDPE phase that restricts the phase inversion into the matrix droplet morphology. A simple method was used for proper dispersion, distribution, and formation of effective conducting network path [carbon nanotube (CNT)–CNT contact] of MWCNT through cocontinuous HDPE phase (minor phase) into PP matrix of the blend which in turn enhanced the electrical conductivity of the nanocomposite with minimum percolation threshold. The percolation threshold of PP/HDPE/MWCNT nanocomposite found at 0.352 wt% loading of MWCNT, which is significantly lower than those reported for developing electrical conductivity in PP/MWCNT nanocomposite. Phase morphology, extent of dispersion and location of the MWCNT in the blend has been investigated with a scanning and transmission electron microscopy. Thermal and mechanical properties of PP/HDPE/MWCNT nanocomposite with variation of MWCNT loading have also been studied. POLYM. COMPOS. , 2013. © 2013 Society of Plastics Engineers
Kinematic-Layout-aware Random Forests for Depth-based Action Recognition

In this paper, we tackle the problem of 24 hours-monitoring patient actions in a ward such as "stretching an arm out of the bed", "falling out of the bed", where temporal movements are subtle or significant. In the concerned scenarios, the relations between scene layouts and body kinematics (skeletons) become important cues to recognize actions; however they are hard to be secured at a testing stage. To address this problem, we propose a kinematic-layout-aware random forest which takes into account the kinematic-layout (\ie layout and skeletons), to maximize the discriminative power of depth image appearance. We integrate the kinematic-layout in the split criteria of random forests to guide the learning process by 1) determining the switch to either the depth appearance or the kinematic-layout information, and 2) implicitly closing the gap between two distributions obtained by the kinematic-layout and the appearance, when the kinematic-layout appears useful. The kinematic-layout information is not required for the test data, thus called "privileged information prior". The proposed method has also been testified in cross-view settings, by the use of view-invariant features and enforcing the consistency among synthetic-view data. Experimental evaluations on our new dataset PATIENT, CAD-60 and UWA3D (multiview) demonstrate that our method outperforms various state-of-the-arts.
Embedding Meshes and Tori on Double-Loop Networks of the Same Size

Double-loop networks are extensions of ring networks and are widely used in the design and implementation of local area networks and parallel processing architectures. However, embedding of other types of networks on double-loop networks has not been well studied due to the topological complexity of double-loop networks. The traditional L-shape, designed to compute the diameter of double-loop networks, is not effective to solve the embedding problem. We propose a novel tessellation approach to partition the geometric plane of double-loop networks into a set of parallelogram tiles, called P-shape. Based on the characteristics of P-shape, we design a simple embedding scheme, namely, P-shape embedding, that embeds meshes and tori on double-loop networks in a systematic way. Under P-shape embedding, we evaluate the embedding metrics of dilation, average dilation, and congestion, which depend heavily on the parameters of P-shape. A main merit of P-shape embedding is that a large fraction of embedded mesh/torus edges have edge dilation 1, resulting in a low average dilation. These are the first results, to our knowledge, for embedding meshes and tori on double-loop networks which is of great significance due to the popularity of these architectures. Our P-shape construction bridges between regular graphs and double-loop networks, and provides a powerful tool for studying double-loop networks.
YEASTRACT: providing a programmatic access to curated transcriptional regulatory associations in Saccharomyces cerevisiae through a web services interface

The YEAst Search for Transcriptional Regulators And Consensus Tracking (YEASTRACT) information system (http://www.yeastract.com) was developed to support the analysis of transcription regulatory associations in Saccharomyces cerevisiae. Last updated in June 2010, this database contains over 48 200 regulatory associations between transcription factors (TFs) and target genes, including 298 specific DNA-binding sites for 110 characterized TFs. All regulatory associations stored in the database were revisited and detailed information on the experimental evidences that sustain those associations was added and classified as direct or indirect evidences. The inclusion of this new data, gathered in response to the requests of YEASTRACT users, allows the user to restrict its queries to subsets of the data based on the existence or not of experimental evidences for the direct action of the TFs in the promoter region of their target genes. Another new feature of this release is the availability of all data through a machine readable web-service interface. Users are no longer restricted to the set of available queries made available through the existing web interface, and can use the web service interface to query, retrieve and exploit the YEASTRACT data using their own implementation of additional functionalities. The YEASTRACT information system is further complemented with several computational tools that facilitate the use of the curated data when answering a number of important biological questions. Since its first release in 2006, YEASTRACT has been extensively used by hundreds of researchers from all over the world. We expect that by making the new data and services available, the system will continue to be instrumental for yeast biologists and systems biology researchers.
Low velocity propagation in liquid in-filled photonic crystal waveguides

A low-loss low-velocity photonic crystal (PhC) waveguide having rectangular air holes in-filled with a liquid crystal in Si core is proposed. The possible propagation losses due to inefficient coupling are also investigated for proposed structure. It is found that high transmission is obtained for a broad bandwidth from the output of the finally designed heterogeneous waveguide consisting of a slow liquid crystal infiltrated PhC waveguide surrounded by fast PhC waveguides on both sides.