Miracle-dz/UniFAR-FTUs huggingface dataset:
Aerosol optical properties and direct radiative effect over Gobabeb, Namibia

Atmospheric aerosols contribute significantly to the uncertainty in radiative forcing effects that influence the climate and pose a significant health risk to humans. The climatic implications of aerosols are dependent on many variables, including aerosol size, shape, chemical composition, and position in the atmospheric column. The radiative impact of aerosols transported over the west coast of southern Africa has been found, in particular, to be complicated by the aforementioned aerosol properties. This study investigated the columnar optical properties of aerosols over Gobabeb, Namibia (23.56oS, 15.04oE, 400 m asl) using sunphotometer data between December 2014 and November 2015. Aerosol mean optical depth AOD500 had its maximum and minimum values in 2015 August (0.37±0.30) and June (0.06±0.02), respectively. The Angström parameter was mostly above unity during the study period and indicated the prevalence of fine particles for the most part of the year with maximum and minimum values observed in August 2015 (1.44±0.19) and December 2014 (0.57±0.19), respectively. The columnar water vapor was highest in January (2.62±0.79) and lowest in June (0.76±0.27). The volume size distribution showed the fine particles having a mean radius of about 0.16 μm and the coarse mode had variation in sizes with a radius ranging between 3 μm and 7 μm. The single scattering albedo at visible wavelengths ranged between 0.87 and 0.88. The phase function was high at small angles but minimum at about 140o in all seasons. The radiative forcing showed a heating effect in all seasons with maximum and minimum in winter (9.41 Wm-2) and autumn (3.64 Wm-2), respectively. Intercomparison of the sunphotometer data with the Moderate Resolution Imaging Spectroradiometer (MODIS) showed that the satellite sensor overestimates the aerosol loading compared to the ground-based sunphotometer measurements. Both sets of observations were better correlated during the spring and winter seasons than for summer and autumn.
Manejo quirúrgico de la fístula anal

Dr. Luis Charúa Guindic,* Dra. Rosa Martha Osorio Hernández,* Dra. Teresita Navarrete Cruces,* Dr. Roberto Eduardo Amador Cortés,* Dr. Octavio Avendaño Espinosa* * Unidad de Coloproctología del Servicio de Gastroenterología del Hospital General de México. Correspondencia: Dr. Luis Charúa Guindic. Jefe de la Unidad de Coloproctología. Hospital General de México, O.D. Dr. Balmis 148, Col. Doctores. Del. Cuauhtémoc. México, D.F. C.P. 06720. Tel: 5999-61-33, Ext. 1045.
Wideband 2-D Monopulse Antenna Array With Higher-Order Mode Substrate Integrated Waveguide Feeding and 3-D Printed Packaging

A wideband 2-D monopulse antenna array with compact integrated structure is presented. First, based on the slotline/coplanar waveguide (CPW) excitation, a substrate integrated waveguide (SIW) higher-order mode excitation technique is discussed, and a wideband 1-D monopulse antenna array with miniaturized feeding structure is proposed. Then, the designed 1-D array is further extended into a 2-D array. The whole 2-D array is divided into four subarrays to simplify the array feeding. Orthogonal CPW-to-microstrip transition is introduced to utilize the array vertical space and obtain compact feeding arrangement. A 2-D monopulse comparator with broadband accurate feeding amplitudes and phases is also designed to feed the array. Finally, by implementing 3-D printing technology, the array components are packaged as a whole structure, and flexible array arrangement with high integration level can be realized. With the proposed design method, a 2-D monopulse array covering the entire $X$ -band (8–12 GHz, 40% bandwidth) is designed and fabricated. Compact structure and broadband monopulse performance make the proposed array an attractive candidate for wideband accurate target detecting and tracking applications.
A Wideband and Low-Sidelobe Series-Fed Patch Array at 5.8 GHz for Radar Applications

In this letter, a novel series-fed patch array working in the 5.8 GHz industrial, scientific, and medical (ISM) band for healthcare radar monitoring applications has been proposed. The single patch has been opportunely shaped to solve two critical problems of this antenna topology: reduced bandwidth and high-sidelobe level (SLL). The bandwidth enhancement has been obtained with a dual-band structure, resulting from the superposition of two tapered patches with different lengths. For the sidelobes, a nonconventional technique, based on the modulation of the power transferred by one patch to the following one, has been proposed. An electrical two-port model of the single patch has been developed to significantly speed up the design process of longer series-fed arrays. The model impedance matrix shows a good agreement with the one extracted from electromagnetic simulations. The designed antenna shows a fractional bandwidth of 5.92% (more than twice the available one at 5.8 GHz) and an SLL of about $-$20 dB inside all the bandwidth. A prototype has been realized, and both reflection coefficient and radiation pattern at 5.8 GHz have been measured showing an excellent agreement with simulation results.
Universality of -Dirichlet functions and nontrivial zeros of the Riemann zeta-function

We prove a joint discrete universality theorem for Dirichlet -functions concerning joint approximation of a tuple of analytic functions by shifts , where is the sequence of imaginary parts of the nontrivial zeros of the Riemann zeta-function, is a fixed positive number, and are pairwise nonequivalent Dirichlet characters. We use a weak form of Montgomery’s conjecture on the correlation of pairs of zeros of the Riemann zeta-function in the analysis. Moreover, we show the universality of certain compositions of Dirichlet -functions with operators in the space of analytic functions. Bibliography: 31 titles.
Lesions of alimentary tract in the course of systemic lupus erythematosus

Toczeń rumieniowaty układowy jest przewlekłą, zapalną chorobą tkanki łącznej o podłożu autoimmunologicznym, w przebiegu której mogą być zajęte różne narządy i układy. Objawy ze strony przewodu pokarmowego występują u 25–40% pacjentów z aktywną chorobą. Są one zwykle niespecyficzne i wynikają z istniejącej choroby bądź działań niepożądanych zastosowanej terapii. Zmiany w przewodzie pokarmowym mogą obejmować każdy z jego odcinków, a także dotyczyć wątroby i trzustki. W artykule przedstawiono najczęstsze i najcięższe objawy gastroenterologiczne w przebiegu tocznia rumieniowatego układowego, wśród nich toczniowe zapalenie naczyń krezki, enteropatię białkową, rozedmę pęcherzykową jelita, uszkodzenie wątroby i ostre zapalenie trzustki. S u m m a r y
Desenvolvimento de uma cabeça sensora para veículos aéreos não-tripulados

Veiculos Aereos Nao-Tripulados (VANTs) tem sido foco de muitas pesquisas nos ultimos anos, devido ao grande numero de aplicacoes potenciais para robos aereos, nos campos civil e militar. Entretanto, os sistemas eletronicos comercialmente disponiveis para essa classe de veiculos em geral sao caros, e a importacao dos mesmos de outros paises para o Brasil pode estar sujeita a severas restricoes. Neste trabalho, apresenta-se o desenvolvimento de um sistema de instrumentacao eletronica embarcada, doravante denominado "Cabeca Sensora", objetivando alcancar caracteristicas equivalentes as dos sistemas comerciais, mas como uma plataforma nacional de baixo custo e aberta, que possa ser facilmente reproduzida em outras instituicoes de ensino ou pesquisa. O sistema proposto e capaz de estimar ângulos de atitude e contem diversos sensores, tais como sensores inerciais (acelerometros e girometros), magnetometros, receptor GPS, sensores de pressao estatica e dinâmica, necessarios para aplicacoes de navegacao inercial, guiagem e controle de veiculos aereos. Sao abordados os desenvolvimentos de hardware e de firmware, que incluem a implementacao de um algoritmo de fusao sensorial para estimacao de atitude. Quatro algoritmos de fusao sensorial foram avaliados em ambiente de simulacao, e os respectivos resultados comparados para se determinar aquele que, com base no seu desempenho, foi posteriormente implementado na Cabeca Sensora. Finalmente, resultados experimentais obtidos com um prototipo da Cabeca Sensora sao apresentados e analisados.
An iterative approach for the discrete‐time dynamic control of Markov jump linear systems with partial information

The H2 , H∞ and mixed H2/H∞ dynamic output feedback control of Markov jump linear systems in a partial observation context is studied through an iterative approach. By partial information, we mean that neither the state variable x(k) nor the Markov chain θ(k) are available to the controller. Instead, we assume that the controller relies only on an output y(k) and a measured variable θ^(k) coming from a detector that provides the only information of the Markov chain θ(k). To solve the problem, we resort to an iterative method that starts with a state‐feedback controller and solves at each iteration a linear matrix inequality optimization problem. It is shown that this iterative algorithm yields to a nonincreasing sequence of upper bound costs so that it converges to a minimum value. The effectiveness of the iterative procedure is illustrated by means of two examples in which the conservatism between the upper bounds and actual costs is significantly reduced.
Perturbative techniques for the construction of spike-layers

In this paper we survey some results concerning the construction of spike-layers, namely solutions to singularly perturbed equations that exhibit a concentration behaviour. Their study is motivated by the analysis of pattern formation in biological systems such as the Keller-Segel or the Gierer-Meinhardt's. We describe some general perturbative variational strategy useful to study concentration at points, and also at spheres in radially symmetric situations.
A Dirichlet Process Mixture Model for Non-Ignorable Dropout

Longitudinal cohorts are a valuable resource for studying HIV disease progression; however, dropout is common in these studies. Subjects often fail to re-turn for visits due to disease progression, loss to follow-up, or death. When dropout depends on unobserved outcomes, data are missing not at random, and results from standard longitudinal data analyses can be biased. Several methods have been proposed to adjust for non-ignorable dropout; however, many of these approaches rely on parametric assumptions about the distribution of dropout times and the functional form of the relationship between the outcome and dropout time. More ﬂexible approaches may be needed when the distribution of dropout times does not follow a known distribution or violates proportional hazards assumptions, or when the relationship between the outcome and dropout times does not have a simple polynomial form. We propose a Bayesian semi-parametric Dirichlet process mixture model to ﬂexibly model the relationship between dropout time and the outcome and show that more accurate inference can be obtained by non-parametrically modeling the distribution of subject-speciﬁc eﬀects as well as the distribution of dropout times. Results from simulation studies as well as an application to a longitudinal HIV cohort study database illustrate the strengths of our Bayesian semi-parametric approach.
Optimization of Refractive Index Sensitivity in Nanofilm-Coated Long-Period Fiber Gratings Near the Dispersion Turning Point

In this article, we present detailed investigation of the high-performance long-period fiber gratings (LPFGs) based surrounding refractive index (SRI) sensors. A comprehensive design approach is proposed to optimize the sensitivity in a specific SRI range by combining adequately both dispersion turning point (DTP) and mode transition (MT) effects. The SRI sensitivity enhancement induced by the DTP and the MT is discussed respectively. The relative importance of the mechanisms in different SRI range is revealed. The mode transitions of the HE1,18 and HE1,20 are investigated in a single LPFG, where two high sensitivity ranges are obtained. The atomic layer deposition (ALD) technology is used to deposit the titanium dioxide (TiO2) nano-film on the LPFG surface. The SRI sensitivities of 1 × 104 nm /RIU in the SRI range 1.336–1.3397 and 4.2 × 104 nm/RIU in the range 1.4526–1.4561 are achieved, respectively. The experimental results are well consistent with the theoretical analysis.
What'S new from NAL in hearing aid prescriptions?

Page Ten October 2006 • Vol. 59 • No. 10 B ack in 1976, a paper from Australia was published in Scandinavian Audiology describing a new prescriptive fitting method for hearing aids. While the paper was highly regarded, the method itself had little clinical impact in the U.S. At the time, many practitioners still believed it was necessary to use speech audiometry to select the best hearing aid, and the few who did favor prescriptive fittings quickly latched onto the Berger method, also introduced about this time. When the revised version of the Australian method, the NAL-R, came out 10 years later, the U.S. climate was quite different and the cleverly designed multi-colored slide rules started showing up in clinics everywhere. Soon, the NAL-R method was included on probe-mic equipment, and the rest is history. But hearing aids change, and so does people’s thinking about fitting them. It’s only natural, then, that prescriptive fitting methods must also evolve. Now, 30 years after the launch of the original NAL, that’s what this month’s Page Ten is about. Our author is Harvey Dillon, PhD, director of research at the National Acoustic Laboratories (NAL) of Australia. Dr. Dillon is internationally known in the areas of acoustics, psychoacoustics, and hearing aids, and his book, Hearing Aids, has become the standard hearing aid text for students and practicing professionals. Harvey’s research interests are diverse, ranging from electrophysiology to APD in children to hearing protection. This month, however, he’s here to talk about what he is known for best: selecting and fitting hearing aids, and, specifically, the birth of the new NAL-NL2 prescriptive fitting method. In April 1999, my introductory comments for Page Ten went something like this: “If you believe the television commercials, ‘Foster’s is Australian for beer. ’ A rather debatable statement if you regularly sample the barley beverages from down under. What’s not debatable is that ‘the NAL is Australian for good hearing aid research. ’ This definition is known from Beijing to Bitburger to Bud. ” Those comments referred to a Page Ten written by none other than Harvey Dillon, in which he described the new NAL-NL1 fitting procedure—an article that quickly became one of the most referenced in the 60-year history of the Journal. While those Foster’s commercials seem to have faded over the past 7 years, it’s good to know that Harvey and the folks from the NAL just keep making things better, providing us with a contemporary hand-crafted brew for selecting and fitting hearing aids.
Experimental Results on the Robust and Adaptive Control of Robot Manipulators Without Velocity Measurements

To achieve accurate tracking control of robot manipulators, many schemes have been proposed. Some common approaches are based on robust and adaptive control techniques, while when necessary velocity observers are employed. Robust techniques have the advantage of requiring few prior information of the robot model parameters/structure or disturbances while tracking can be achieved, for instance, by using sliding mode control. On the contrary, adaptive techniques guarantee trajectory tracking but under the assumption that the robot model structure is perfectly known and it is linear in the unknown parameters, while joint velocities are also available. In this letter, some experiments are carried out to find out whether combining a robust and an adaptive controller may increase the performance of the system, as long as the adaptive term can be treated as a perturbation by the robust controller. The results are compared with an adaptive robust control law, showing that the proposed combined scheme performs better than the separated algorithms, working on their own and then the comparison laws.
The partition function of the four-vertex model in inhomogeneous external field and trace statistics

The exactly solvable four-vertex model with the fixed boundary conditions in the presence of an inhomogeneous linearly growing external field is considered. The partition function of the model is calculated and represented in the determinantal form. The established connection with the boxed plane partitions allows us to calculate the generating function of plane partitions with the fixed sums of their diagonals. The obtained results are another example of the connection of integrable models with enumerative combinatorics.
Creating Convolutional Neural Network and Training it to Classify Images using Machine Learning

Machine Learning, also the sub part of artificial intelligence is a process of making a computer learn from examples and experiences. It is be used in various fields such as data mining, personal assistance, social media services, spam email detection etc. One of the most used application of machine learning is Image processing, Image recognition and Image classification. For image recognition neural networks are used in machine learning, which are inspired by real neural networks of humans that we use to classify images. For creating neural networks the Keras library is used which is written in python and runs on top of the tensor flow library.
Clinical Observation of Traditional Chinese Medicine Combined with Etanercept in Treatment of Elderly Rheumatoid Arthritis

Objective:To investigate the efficacy of traditional Chinese medicine combined with etanercept in treatment of elderly rheumatoid arthritis. Methods :90 cases of elderly rheumatoid arthritis patients from February 2008 to October 2011 in our hospital,according to the random number table were divided into the observation group and control group with 45 cases in each group. The control group were given subcutaneous etanercept based on conventional therapy,the observation group combined with traditional Chinese medicine treatment. The efficacy,clinical indicators,experimental indicators, and adverse reactions of two groups were compared. Results:The total effective rate of observation group was 91.11%(41/45),of the control group was 73.33%(33/45),the difference was statistically significant(P0.05); the clinical indicators and experimental indicators of two groups arewere significantly improvemendt at 12 weeks of after using medication (P0.05),and the observation group wereas obviously better than the control group (P0.05); the adverse reactions rate of observation group was 6.67%(3/45),of the control group was 22.22%(10/45),the difference was statistically significant (P0.05). Conclusion:Traditional Chinese medicine combined with etanercept in treatment of elderly rheumatoid arthritis can significantly improve the efficacy, and ,improve the clinical indicators and experimental indicators,and reduce adverse reactions, . It is worthy of clinical application.
Comparison of fluconazole release from hydrogels with Syntalen MP and Syntalen KP and from hydrophilic cream

Fluconazole is popular antifungal medicine, usually used per os in Candida spp. infections of the skin and mucous membranes, pityriasis versicolor, candidiasis organs, and also in the prophylaxis of fungal infections in patients with cancer and AIDS. There are attempts of formulation of the different forms of drug because of many side effects of fluconazole in oral administration. These are eye drops, injections and semisolid skin preparations. Thus, the aim of the study was preparing two hydrogels with Syntalen MP and Syntalen KP and hydrophilic cream, containing 1% of fluconazole and comparing the release of the substance from obtained preparations. At the beginning, gels and hydrophilic cream have been subjected to physical tests such as: slip and spreadability. Further, their rheological properties were evaluated. In the slip and spreadability tests, the cream had the best parameters, the rheological tests showed pseudoplastic character of flowing of gels and plastic flowing of the cream. All these three preparations showed the thixotropy. The release studies, conducted using the extracting chamber (according to FP IX) in Paddle Apparatus showed that the amount of released substance from gels is about two times bigger than from the cream, but the releasing from the gel with Syntalen MP is slightly better than from the gel with Syntalen KP.
Quality assessment of fusing Sentinel-2 and WorldView-4 imagery on Sentinel-2 spectral band values: a case study of Zagreb, Croatia

ABSTRACT Image fusion methods aim at fusing low resolution and high-resolution image to obtain a new image that provides new information for the specific application. The main goal of this article is multitemporal Sentinel-2 image fusion using single WorldView-4 satellite image for urban area monitoring. Fusing those images should provide Sentinel-2 image with similar radiometric band value as original Sentinel-2 image, but with a spatial resolution of WorldView-4. Ehlers, Brovey Transform, Modified Intensity-Hue-Saturation, High-Pass Filtering, Hyperspherical Colour Space and Wavelet resolution merge fusion techniques were used for spatial enhancement of Sentinel-2 images. Original and fused images were first compared using standard statistical parameters, mean, median and standard deviation. Image quality analysis was conducted with different objective image quality measures like root mean square error, peak signal to noise ratio, universal image quality index, structural similarity index, relative dimensionless global error, spatial correlation coefficient, relative average spectral error, spectral angle mapper, multi-scale structural similarity index. Using these quality measures helped in determining the spectral and spatial preservation of fused images. Hyperspherical colour space method was selected as the best method for image fusion of Sentinel-2 and WorldView-4 image-based on standard statistical parameters and quality measures.
The Use of Exponential Transmission Lines in Microwave Components

C. Pa~ameter d—Refeyence Plane Shift in Main . 4 ~m Here the recommendation to be made is a hybrid one. The IBM experimental data is considered the most reliable. The MRI experimental data appears to yield a value somewhat smaller than expected. For ZoI/Zoz 1.0 and for all values of 2D@ use “lVfodified M RI Theory, ” which requires that d be computed from equivalence relation 4a) of Table II 1, where XJZO is given by (3). A fair prediction of the value of this parameter should be obtained by utilizing the above procedure except possibly in the particular region where 2D1/h >0.7 and ZO1/ZOZ >1.0. In this region only a helpful upper bound is available.
Roughness and amorphization impact on thermal conductivity of nanofilms and nanowires: Making atomistic modeling more realistic

In this work, the impact of roughness and amorphization on the effective thermal conductivity of silicon nanofilms and nanowires is studied with atomistic simulations. The discrepancy between simulations and experimental measurements shows that it is necessary to consider realistic roughness and amorphization to reach an agreement. We show that subnanometric roughness and specific correlation length can reduce thermal transport by a factor of two in both nanofilms and nanowires; in addition, this reduction is even more pronounced than the one related to the existence of native oxides or amorphous phases on nanostructure edges. Furthermore, an interfacial thermal resistance parallel to the heat flux is observed. This thermal resistance is increasing upon the increase of the amorphous shell thickness, reaching a maximum value for thickness of 6 nm. Our findings could improve the strategy to elaborate nanomaterials with enhanced thermoelectric efficiency by tuning thermal conductivity through the engineering of surfaces.