Miracle-dz/UniFAR-FTUs huggingface dataset:
Super-resolution in Cardiac Magnetic Resonance Imaging

Las imágenes de resonancia magnética card́ıaca son dificiles de obtener debido a fuentes intŕınsecas de ruido, tales como los movimientos respiratorios y del corazón. Sin embargo, las imágenes del corazón pueden ser adquiridas en tiempo real, la calidad de la imagen es muy limitada y muchas secuencias usan sincronización con el ECG para capturar imágenes de cada fase del ciclo card́ıaco durante varios latidos del corazón. Este trabajo presenta un algoritmo de super-resolución novedoso que mejora la calidad de las imágenes usando un enfoque Bayesiano disperso. La versión de alta resolución de la imagen card́ıaca se construye a partir de la información de series de baja resolución, observaciones de diferentes series no ortogonales con voxeles anisotrópicos y un conocimiento a priori a cerca de las caracteŕısticas locales y la forma global de la imagen. Se realizaron validaciones cualitativas y cuantitativas sobre imágenes sintéticas y reales en comparación con técnicas de linea base; reportando un incremento promedio de 2.8 dB en la relación señal a ruido pico y 1.8% en el ı́ndice de similitud estructural. Los resultados obtenidos demuestran que el método propuesto es capaz de reconstruir de forma precisa la imagen, recuperando la forma original con pocos artefactos y bajo ruido.
Characterization of Carbamazepine-Loaded Solid Lipid Nanoparticles Prepared by Rapid Expansion of Supercritical Solution

Purpose: To prepare carbamazepine-loaded solid lipid nanoparticles (CBZ-SLN) for prolonged release of CBZ in oral drug delivery. Methods: CBZ-loaded SLNs were prepared by rapid expansion of supercritical solution (RESS). SLNs were formulated using stearic acid as the lipid component. Initially, lipid and drug were separately micronized by RESS process separately. This was followed by co-precipitation of the components with the two solutes using RESS to produce drug-loaded SLNs. The formulations were characterized by infrared spectroscopy (IR), scanning electron microscopy (SEM) and ultraviolet spectrophotometry (UV). Results: Application of RESS to pure stearic acid yielded spherical particles in the range 40 to 200 nm which was about 600 times smaller than the unprocessed powder based on SEM observation. Similarly, RESS processing of carbamazepine produced nanoparticles with rod shape. FT-IR analysis showed that no chemical structure change occurred during RESS processing of both components. Coprecipitation of drug and lipid using RESS produced SLNs with drug loading capacity of 2.2 %. RESS yielded ultrafine spherical particles (100 nm) of CBZ-SLNs. Conclusion: The successful preparation and characterization of carbamazepine-loaded solid lipid nanoparticles by RESS as well as their characterization has been achieved in this study.
Draft Examination of associations between chaos in the home environment , serum cortisol level , and dietary fat intake among parents of preschool-age children

Journal: Applied Physiology, Nutrition, and Metabolism Manuscript ID apnm-2016-0659.R1 Manuscript Type: Brief communication Date Submitted by the Author: 14-Mar-2017 Complete List of Authors: MacRae, Laura; University of Guelph, Human Health and Nutritional Sciences Darlington, Gerarda; University of Guelph, Dept of Mathematics and Statistics Haines, Jess; University of Guelph, Family Relations and Applied Nutrition Ma, David; University of Guelph, Keyword: Chaos, Cortisol, diet < diet, Parent, stress < stress
MRI: a tool for measuring turbulent intensities in flow systems

Understanding the fluid-structure interaction and fluid dynamics downstream of an obstruction is crucial in the design and fabrication of devices that find application in both medicine and industry. It is known that the fluid flow patterns downstream of an obstruction may be very complex and are three dimensional, including the formation of vortices, recirculating flow, flow separation and the onset of turbulence. The development of any such pattern of flow might be detrimental to the optimal performance of the flow system. In this work we have used the magnetic resonance imaging (MRI) technique to investigate flow dynamics downstream of an artificial heart valve. MRI is a naturally threedimensional, non-invasive technique that finds application in clinical, biomedical research and materials research. It has the capability to visualize the internal structure of materials and also to quantify mass transport properties. In this in vitro study, we have measured the turbulent diffusivity and velocity downstream of the valve in two configurations (fully opened and partially opened). Our particular implementation of the MRI measurement (known as SPRITE imaging) is unusually robust to fast turbulent flows and has been demonstrated effective at Reynolds numbers on the order 10 5 , much higher than possible with most conventional, clinical MRI techniques. The results showed a low turbulent diffusivity downstream of the fully opened valve configuration, while the turbulent diffusivity is higher downstream of the partially opened valve coupled with a high-velocity fluid jet and recirculating flow. There are distinct
ANÁLISE DAS INTERAÇÕES E DO COMPORTAMENTO TÁTICO DE ATLETAS SUB-17 DE FUTEBOL COM DIFERENTES CAPACIDADES TÁTICAS

RESUMO Este estudo objetivou comparar o comportamento tático individual e as propriedades da rede de interações de atletas com maior e menor capacidade tática durante pequenos jogos no futebol. A amostra foi composta por 19 jogadores de futebol sub17 (16.2 anos) de um mesmo time, de nível nacional. Jogadores foram divididos em grupo 1 e grupo 2, com maior e menor capacidade tática, respectivamente, medida pelo FUT-SAT. Na sequência, eles participaram de 12 pequenos jogos em um campo de 36mx27m com todas as regras do jogo formal. Avaliou-se o comportamento tático dos jogadores por meio da incidência dos princípios táticos fundamentais durante os pequenos jogos. Total links, densidade e clustering coefficient foram definidos com as medidas das propriedades gerais da rede. Analisaram-se os dados por meio do teste t independente e do teste de Mann-Whitney. Os resultados mostraram que o grupo 1 apresentou maiores valores para total links (p=0.007) e densidade (p=0.007). O grupo 1 apresentou ainda maior incidência de ações de unidade defensiva (p=0.001), enquanto o grupo 2 realizou mais ações de equilíbrio defensivo (p=0.008) e equilíbrio de recuperação (p=0.038). Conclui-se que a capacidade tática influencia o comportamento individual e coletivo durante pequenos jogos. Palavras-chave: Futebol; Análise e desempenho de tarefas; Educação Física
Itô formula for stochastic integrals w.r.t. compensated Poisson random measures on separable Banach spaces

We prove the Ito formula (1.3) for Banach valued functions acting on stochastic processes with jumps, the martingale part given by stochastic integrals of time dependent Banach valued random functions w.r. t. compensated Poisson random measures. Such stochastic integrals have been discussed by Mandrekar and Rüdiger, Stochastics and Stochastic Reports 78(4), 189–212 (2006) and Rüdiger (2004), Stochastics and Stochastic Reports, 76, pp. 213–242.
Highly Porous and Stable Metal−Organic Frameworks: Structure Design and Sorption Properties

Gas sorption isotherm measurements performed on the evacuated derivatives of four porous metal−organic frameworks (MOF-n), Zn(BDC)·(DMF)(H2O) (DMF = N,N‘-dimethylformamide, BDC = 1,4-benzenedicarboxylate) (MOF-2), Zn3(BDC)3·6CH3OH (MOF-3), Zn2(BTC)NO3·(C2H5OH)5H2O (BTC = 1,3,5-benzenetricarboxylate) (MOF-4), and Zn4O(BDC)3·(DMF)8C6H5Cl (MOF-5), reveal type I isotherms for n = 2, 3, and 5, which is evidence of microporous and accessible channels having high structural integrity and organization. Although gas sorption into MOF-4 was not observed, careful examination of its ethanol sorption isotherms at 22 and 32 °C point to the presence of coordinatively unsaturated zinc centers within its pores, which upon ethanol sorption undergo coordination transitions from 3- to 4-, 4- to 5-, and 5- to 6-coordination. MOF-n materials were produced by building the extended analogues of molecular metal carboxylate clustersa strategy that has allowed the realization of the most porous and thermally stable framework yet re.
Hours spent on household tasks by business school graduates

It has been suggested that household and family responsibilities may adversely impact the career success achieved by women. This paper examines the number of hours spent weekly on household tasks by male and female business school graduates. Analysis of variance and multiple regression revealed that the presence of children increases the number of hours spent on household tasks by all graduates, but the effect is most pronounced for female graduates. The presence of children adds from three to ten hours per week to the workload of male graduates and from ten to 20 hours per week to the workload of female graduates. Effective organizational initiatives and changes in expectations within families and society are needed so that graduates of business schools, particularly women, can accommodate the careers for which they have been educated as well as their household responsibilities.
Complex Phase Biasing of Silicon Mach-Zehnder Interferometer Modulators

Complex Phase Biasing of Silicon Mach-Zehnder Interferometer Modulators Alex W. MacKay Master of Applied Science Graduate Department of Electrical and Computer Engineering University of Toronto 2014 A new any-point biasing scheme for Mach-Zehnder interferometer modulators which considers the complex phase is proposed. The Mach-Zehnder arm loss imbalance (imaginary part of the phase bias) is found by slightly perturbing the real and imaginary parts of the phase in each arm with low frequency pilot tones and monitoring and manipulating the spectral content at the output. This technique can be used to extend the possible extinction ratio, reduce the phase error, and better quantify the system chirp but also has some performance degradations which are also quantified and discussed. Simulation results indicate that the maximum extinction ratio of a typical modulator can be extended to & 40 dB and maintained in the presence of ambient complex phase drift in the arms. Practical challenges for implementing this method with a silicon Mach-Zehnder modulator are discussed, but the analysis is general to other material platforms.
Bounds on Treatment Effects on Transitions

This paper considers the identification of treatment effects on conditional transition probabilities. We show that even under random assignment only the instantaneous average treatment effect is point identified. Since treated and control units drop out at different rates, randomization only ensures the comparability of treatment and controls at the time of randomization, so that long-run average treatment effects are not point identified. Instead we derive informative bounds on these average treatment effects. Our bounds do not impose (semi)parametric restrictions, for example, proportional hazards. We also explore various assumptions such as monotone treatment response, common shocks and positively correlated outcomes that tighten the bounds.
Terrain mapping with a pan and tilt stereo camera for locomotion on a quadruped robot

Legged robots are expected to have superior mobility on rough terrain than wheeled robots. The main reason is that legged locomotion is more adaptable to a wide range of terrain types as the robot can decompose its path into a sequence of footholds and can use different locomotion strategies. In order to accomplish most of the locomotion tasks the robot requires high level control (i.e., to adjust the locomotion parameters and to choose optimal footholds) which depends on real-time localization and accurate terrain mapping. In this paper, we propose a SLAM solution using a pan and tilt stereo camera mounted on an hydraulically actuated quadruped robot that builds a map and keeps track of the robot’s position. Since the computation needs to be carried out on board and the robot is subject to considerable motion during its locomotion (regular vibrations, impacts or slippages), we developed a dedicated implementation based on fast stereo depth computation, GPU based map building and mechanical motion compensation. Combined with a foothold planning framework presented in our previous work [1], this localization and mapping ability allows to perform locomotion in a fully planned manner. Successful results of foothold planning with our quadruped robot show the effectiveness of our method.
Bacterial and firefly luciferase genes in transgenic plants : advantages and disadvantages of a reporter gene

Genes encoding light-emitting luciferase were recently isolated from luminous marine bacteria and fireflies. Expression of luciferase genes in diverse organisms is a unique way for studying gene expression by simple and sensitive measurement of light. Recent advances in application of luciferase reporter genes are reviewed and documented by examples of in vivo visualization of their expression in transgenic plants.
Development of Bismuth Sulphide Quantum Dot’s in Silicate Glass Matrix

The successful growth of Bi2S3 nanocrystals in glass matrix using SiO2 (Silicon Dioxide), K2O (Potassium Oxide), Na2O (Sodium Oxide), B2O3 (Boron Trioxide), ZnO (Zinc Oxide) and TiO2 (Titanium Dioxide) as key components is done using the fusion method. Different sizes of nanocrystals in glass matrix were grown by annealing the glass (dispersed with Bi2S3 nucleons) under two different conditions. The glass was annealed between 6 and 48 hrs at constant temperature of 550 C. The glass was also annealed at the temperature between 550, 575 and 600 C at constant annealing time 6 hrs. The photocatalytic H2 generation under solar light has been performed and utmost H2 generation i.e. 5545 μmole h g has been achieved, which is higher than Bi2S3 powder The Bi2S3 nanocomposite obtained was characterized by Optical Transmission (OT) spectroscopy and Transmission Electron Microscopy (TEM). Optical Transmission (OT) spectroscopy revealed strong red shift in transmission cut off which indicates increase in particle size of nanocrystals under both the conditions. TEM analysis demonstrated the nanocrystal size in the range of 3 to 12 nm.
Strong biases in estimating the time dependence of mass accretion rates in young stars

The temporal decay of mass accretion in young stars is a fundamental tracer of the early evolution of circumstellar disks. Through population syntheses, we study how correlated uncertainties between the estimated parameters of young stars (luminosity, temperature, mass, age) and mass accretion rates Mdot, as well as observational selection effects, can bias the temporal decay of mass accretion rates (Mdot t^-eta) inferred from a comparison of measured Mdot with isochronal ages in young stellar clusters. We find that the presence of realistic uncertainties reduces the measured value of eta by up to a factor of 3, leading to the inference of shallower decays than the true value. This suggests a much faster temporal decay of Mdot than generally assumed. When considering the minimum uncertainties in ages affecting the Orion Nebula Cluster, the observed value eta~1.4, typical of Galactic star forming regions, can only be reproduced if the real decay exponent is eta>4. This effect becomes more severe if one assumes that observational uncertainties are larger, as required by some fast star formation scenarios. Our analysis shows that while selection effects due to sample incompleteness do bias eta, they can not alter this main result and strengthen it in many cases. A remaining uncertainty in our work is that it applies to the most commonly used and simple relationship between Mdot, the accretion luminosity and the stellar parameters. We briefly explore how a more complex interplay between these quantities might change the results.
Fast and Efficient Method for Fire Detection Using Image Processing

Conventional fire detection systems use physical sensors to detect fire. Chemical properties of particles in the air are acquired by sensors and are used by conventional fire detection systems to raise an alarm. However, this can also cause false alarms; for example, a person smoking in a room may trigger a typical fire alarm system. In order to manage false alarms of conventional fire detection systems, a computer vision‐based fire detection algorithm is proposed in this paper. The proposed fire detection algorithm consists of two main parts: fire color modeling and motion detection. The algorithm can be used in parallel with conventional fire detection systems to reduce false alarms. It can also be deployed as a stand‐alone system to detect fire by using video frames acquired through a video acquisition device. A novel fire color model is developed in CIE L*a*b* color space to identify fire pixels. The proposed fire color model is tested with ten diverse video sequences including different types of fire. The experimental results are quite encouraging in terms of correctly classifying fire pixels according to color information only. The overall fire detection system's performance is tested over a benchmark fire video database, and its performance is compared with the state‐of‐the‐art fire detection method.
The Equilibrium Effects of Asymmetric Information: Evidence from Consumer Credit Markets

This paper exploits a large-scale natural experiment to study the equilibrium effects of information restrictions in credit markets. In 2012, Chilean credit bureaus were forced to stop reporting defaults for 2.8 million individuals (21% of the adult population). We show that the effects of information deletion on aggregate borrowing and total surplus are theoretically ambiguous and depend on the pre-deletion demand and cost curves for defaulters and non-defaulters. Using panel data on the universe of bank borrowers in Chile combined with the deleted registry information, we implement machine learning techniques to measure changes in lenders’ cost predictions following deletion. Deletion reduces (raises) predicted costs the most for poorer defaulters (non-defaulters) with limited borrowing histories. Using a difference-in-differences design, we find that individuals exposed to increases in predicted costs reduce borrowing by 6.4%, while those exposed to decreases raise borrowing by 11.8% following the deletion, for a 3.5% aggregate drop in borrowing. Using the difference-in-difference estimates as inputs into the theoretical framework, we find evidence that deletion reduced aggregate welfare under a variety of assumptions about lenders’ pricing strategies.
Violent Content in Television: Effect of Cognitive Style and Age in Mediating Children's Aggressive Responses.

A study was conducted to investigate the impact certain cognitive styles or structures have in mediating the influence of aggressive television on young boys. Ss were 143 white middle class boys: 36 were 5 1/2-year-old kindergarteners; 30 were 6 1/2-year-old first graders; 36 were 7 1/2-year-old second graders; and 41 were 8 1/2-year-old third graders. One-third of the Ss at each age level were exposed to an experimental condition of a 6-Minute aggressive TV film; one-third were exposed to an experimental condition of a 6-minute nonaggressive film; and one-third were assigned to a no-film control group. Following exposure, an aggression measure was obtained in the guise of a guessing game played with an experimenter acting as a confederate. Each S was given the option of exposing the confederate to a noxious noise whenever he made an incorrect guess. Analyses of variance revealed that: (1) the statistically reliable differences in aggression between the experimental film conditions were attributable to differences among the 6 1/2and 7 1/2year-old Ss; (2) younger children were significantly more aggressive than the older; and (3) the level of cognitive functioning was more differentiated, organized, elaborated and articulated as a function of maturity. Results support the premise that the effect of TV exposure depends not only on the content but also on the child's cognitive style and way of responding to the environment in general. (KM)
SIMULTANEOUS SPECTROPHOTOMETRIC DETERMINATION OF NORFLOXACIN, OFLOXACIN AND LOMEFLOXACIN IN RABBIT BLOOD SERUM BY USE OF CHEMOMETRICS

A spectrophotometric method for the simultaneous determination of norfloxacin, ofloxacin and lomefloxacin, is described. The spectrophotometric analysis is made possible with the aid of chemometric methods, such as classical least square (CLS), principal component regression (PCR), partial least square (PLS), and radial basis function-artificial neural network (RBF-ANN). Spectra were collected in the 190-400 nm range from a set of samples of three compounds in a Britton-Robinson buffer solution (pH=1.81). This approach overcomes the significant practical difficulties of severe spectral overlap. It was found that peak intensities are proportional to the concentration for each analyte. The obtained linear calibration concentration ranges are 0.6-13.8, 0.5-15.0, and 0.5-15.0 mg L-1 for norfloxacin, ofloxacin and lomefloxacin, respectively, and the LODs for the three analytes were found to be approximately 6-24× 10 -2 mg L-1. The proposed method was applied to a prediction set of synthetic mixtures of three analytes. The results were shown that the RBF-ANN model gave the best results (RPE T = 3.0%). This method was also applied for the determination of norfloxacin, ofloxacin and lomefloxacin in rabbit blood serum, and these compared well with those from the alternative analysis by HPLC.
The Local Oscillator System for the Heterodyne Instrument for FIRST ( HIFI )

The Heterodyne Instrument for FIRST (HIFI) is comprised of five SIS receiver channels covering 480-1250 GHz and two HEB receiver channels covering parts of 1410-1910 GHz and 2400-2700 GHz. Two local oscillator sub-bands derived from a common synthesizer will pump each receiver band. The synthesizer, control electronics and frequency distribution will be performed in the spacecraft service module. The service module will be connected to the local oscillator unit on the outside of the cryostat with a WR-28 waveguide for each of the 14 local oscillator sub-bands. The local oscillator unit will be passively cooled and thermally isolated from the cryostat wall. The module is comprised of seven units, one for each receiver band, containing two multiplier chains consisting of a kto w-band multiplier, a MMIC power amplifier operating in one of five bands between 7 1 and 113 GHz, the high frequency multipliers, launching optics and electrical distribution. The entire assembly will be cooled to 120K. The local oscillator system has the two fold technical challenge of providing broad band frequency coverage at very high frequencies. This will be achieved through the use of high power GaAs MMIC amplifiers and planar diode multiplier technology in a passively cooled 120 Kelvin environment. The design criteria and the resulting overall system design-will be presented along with a programmatic view of the development program and development progress. ""