Miracle-dz/UniFAR-FTUs huggingface dataset:
Experimental investigation and design of sectoral waveguide TM01 to TE11 mode converter

Abstract In this paper, an all-metal sectoral waveguide (SWG) mode converter has been proposed for TM01 to TE11 mode conversion, suitable for high-power application with high mode conversion efficiency and beam stability. Describing its operating principle, electromagnetic (EM) analysis has been carried out to observe the propagation behaviour in the different structure regions of the mode converter. A comprehensive design methodology, experimental investigation along with its beam stability performance has been presented. This design methodology has been typically demonstrated for 2.9–3.1 GHz frequency device; the performance of the designed device has been carried out using a commercial simulation code. To validate our design methodology and simulation, the results have been compared with experimental results and found in agreement. The proposed SWG mode converter has exhibited high conversion efficiency (98.4%) along with EM beam stability, suiting for the high-power applications.
Uncertainty in Neural Networks: Approximately Bayesian Ensembling

Understanding the uncertainty of a neural network's (NN) predictions is essential for many purposes. The Bayesian framework provides a principled approach to this, however applying it to NNs is challenging due to large numbers of parameters and data. Ensembling NNs provides an easily implementable, scalable method for uncertainty quantification, however, it has been criticised for not being Bayesian. This work proposes one modification to the usual process that we argue does result in approximate Bayesian inference; regularising parameters about values drawn from a distribution which can be set equal to the prior. A theoretical analysis of the procedure in a simplified setting suggests the recovered posterior is centred correctly but tends to have an underestimated marginal variance, and overestimated correlation. However, two conditions can lead to exact recovery. We argue that these conditions are partially present in NNs. Empirical evaluations demonstrate it has an advantage over standard ensembling, and is competitive with variational methods.
Spatial Modulated Multicarrier Sparse Code-Division Multiple Access

This paper proposes a novel spatial-modulated multicarrier sparse code-division multiple access (SM/MC-SCDMA) system for achieving massive connectivity in device-centric wireless communications. In our SM/MC-SCDMA system, the advantages of both MC signalling and SM are amalgamated to conceive a low-complexity transceiver. Sparse frequency-domain spreading is utilized to mitigate the peak-to-average power ratio (PAPR) of MC signalling, as well as to facilitate low-complexity detection using the message passing algorithm. We then analyze the single-user bit error rate performance of SM/MC-SCDMA systems communicating over frequency-selective fading channels. Furthermore, the performance of SM/MC-SCDMA systems is evaluated based on both Monte-Carlo simulations and analytical results. We demonstrate that our low-complexity SM/MC-SCDMA transceivers are capable of achieving near-maximum likelihood (ML) performance even when the normalized user-load is as high as two, hence constituting a variable solution to support massive connectivity in device-centric wireless systems.
FTMP-based simulations and evaluations of Geometrically-Necessary Boundaries (GNBs) of dislocation

The present study targets four representative GNBs (Geometrically Necessary Boundaries) in terms of their unified and quantitative evaluations based on the field theory of multiscale plasticity (FTMP). Discrete dislocation dynamics simulations on GNBs 2, 3, 4 and 7, whose details about the consisting dislocations have been experimentally identified and theoretically evaluated by Hong, Winther, et al., are conducted. Applying the FTMP-based duality diagram representation scheme to the formation processes reveals a systematic interrelationship that further governs the stability of the GNBs, i.e., all the GNBs exhibit a common tendency to converge ultimately to a single master curve. This leads us to propose a postulate about the stability/instability criterion that involves their dynamic interactions with external disturbances.
The effect of dilution and confinement on the behavior of the classical Heisenberg fluid

In this work we present a classical density functional theory (DFT) study of the behavior of a classical three-dimensional “spin” fluid, the Heisenberg fluid. This model is the simplest model to describe a system with internal degrees of freedom, and can thus be used to describe the behavior of ferrofluids; fluids containing magnetic nanoparticles. We model the fluid as spherical particles with a hard core. Between the particles there are isotropic interactions combined with an anisotropic attractive potential to account for the spin-spin interaction. Within the framework of DFT pair correlations are either treated at modified mean-field (MMF) or simple mean-field (SMF) level. Whereas the former approximates the pair correlation function at the level of the second virial coefficient (low-density limit), the latter neglects correlations between particles (long-range limit). We briefly recapitulate the bulk behavior of the pure Heisenberg fluid and distinguish four generic topologies based on the coupling strength between the spins. We further consider the impact of an external ordering field and then turn to the effects of dilution. To that end, we mix the spin fluid with an apolar solvent and vary the concentration and the size difference between the two components. Varying concentration or size leads to a shift in phase topology. If the spin concentration or size is, for example, increased, the topology shifts towards the one related to higher spin-spin coupling strength in the pure fluid. This change in topology coincides with a widening of the coexistence curve. In the near-critical region, this leads to a deviation from the expected classical critical exponent, which is nevertheless recovered at the critical point. We quantify the deviation by an effective critical exponent. It can also be related to the excess free energy, which can be split into a contribution that is of the same shape as for a pure fluid, and a contribution depending on the concentration difference between the phases. Where this difference vanishes, the classical critical exponent is recovered. Furthermore, we consider the behavior of the pure Heisenberg fluid under confinement to a slit pore of variable width. The pore walls are taken to be hard, structureless substrates that can be modified by a position dependent attractive (and possibly ordering) potential. We consider the Heisenberg fluid at two approximation levels. At first we assume a non-local density and position dependent polarization, which allows us to focus on the local polarization behavior. Subsequently, we treat both density and polarization as local quantities to understand their interplay. In both cases we find that the bulk phase topology is retained for all wall distances when the walls are hard. The coexistence region is merely shifted to lower temperature and density, with a stronger effect on the high-density phase than the low-density one. The
A influência do caixa, do lucro e dos accruals na predição de caixa: uma investigação com dados em painel das companhias brasileiras de capital aberto

O caixa gerado pelas empresas tem sido objeto de estudos nacionais e internacionais, a respeito do seu papel preditivo. No caso brasileiro, a obrigatoriedade da divulgacao da Demonstracao de Fluxo de Caixa - DFC a partir da promulgacao da lei no 11.638/2007 ampliou a possibilidade de estudos sobre este tema. Respaldado na Teoria Positiva em Contabilidade, na Teoria Institucional, na Teoria Informacional e em trabalhos empiricos relacionado ao tema, este trabalho objetivou verificar a influencia do Fluxo de Caixa Operacional do Lucro Liquido e dos accruals em predizer Fluxos de Caixa Operacional das firmas brasileiras de capital aberto. Para tanto, foi utilizado o modelo desenvolvido por Dechow, Kothari e Watts (1998) e expandido por Barth, Cram e Nelson (2001). A pesquisa caracterizou-se como de natureza explicativa, bibliografica e documental e e predominantemente quantitativa, mediante a utilizacao de metodos econometricos. Para a coleta dos dados foi utilizado foi utilizado o banco de dados ECONOMATICA. A amostra foi composta pelas companhias abertas nao financeiras com atuacao na Bolsa de Valores, Mercadorias e Futuros de Sao paulo ((BMF Fornecedores, Impostos, Outros Passivos e Depreciacao no tempo ( t) impactam negativamente no Fluxo de Caixa Operacional futuro ( t + 1 ). A pesquisa demonstrou que quando se considerou a desagregacao do lucro liquido em Fluxo de Caixa Operacional e accruals no tempo t ( nao se levando em conta a sua decomposicao), o Fluxo de Caixa Operacional de setor para setor. Por fim, verificou-se que a demosnstracao do Fluxo de Caixa tem importante papel na reducao dos niveis de assimetria informacional, fazendo com que a contabilidade cumpra o seu objetivo de prover os usuarios com informacoes uteis e confiaveis, auxiliando-os no processo de tomada de decisao.
Applying a Standards-Based Grading Framework Across Lower Level Mathematics Courses

This article describes a framework of Standards-Based Grading suitable for use in a variety of mathematics courses. We detail our experience adapting this framework to various courses, ranging from Pre-calculus to Differential Equations, at four different institutions, including both small liberal arts colleges and large universities, and in class sizes ranging from small to large. Of particular note, we describe our structure of reassessments, including the use of oral reassessments. We also give examples of how this framework provides data allowing instructors to make evidence-based changes to their teaching practice.
Pengaruh Model Pembelajaran Group Investigation Terhadap Kemampuan Pemecahan Masalah Siswa Kelas VIII MTsN Kabupaten Kerinci

Kemampuan pemecahan masalah merupakan kemampuan matematis yang harus dikuasai oleh siswa. Salah satu usaha yang dapat dilakukan adalah dengan menerapkan model pembelajaran kooperatif tipe group investigation. Penelitian ini bertujuan untuk melihat pengaruh model pembelajatan group invertigation terhadap kemampuan pemecahan masalah matematis siswa.Jenis penelitian merupakan penelitian kuasi eksperimen dengan populasi siswa kelas VIII MTs Negeri di Kabupaten Kerinci kecuali kelas unggul di MTsN Kemantan dan MTsN Air Hangat.Siswa kelas VIIID MTsNegeri Penawar dan siswa VIIID MTsNegeri Semerah masing-masing terpilih sebagai kelas eksperimen dan kelas kontrol melalui teknik sampel acak. Instrumen penelitian adalah tes kemampuan pemecahan masalah.Analisis data dilakukan dengan menggunakan uji Mann Whitney U.Hasil analisis data menunjukkan bahwa pemecahan masalah siswa yang mengikuti pembelajaran kooperatif tipe group investigationlebih tinggi dari kemampuan pemecahan masalahsiswa yang mengikuti pembelajaran biasa
Analysis of Depression and Anxiety of the Patients with Coronary Heart Disease before and after PCI

Objective: To explore the influence of PCI, depression and anxiety on the patients with coronary heart disease(CHD). Methods: The degrees of depression and anxiety in CHD patients were assessed by SDS and SAS before and after treating with PCI, the changes of SDS and SAS scales were judged before and after PCI with statistical method. Results: There were 112 CHD patients treated with PCI, 58 cases suffering from anxiety before surgery(51.79%) and 32 cases with depression(28.57%), it had no statistical meaning compared with 65 cases of anxiety(58.04%) and 28 cases of depression(25.00%) in one week after the surgery(P0.05); there were 76 patients with anxiety in six months after the surgery(67.86%), it demonstrated statistical meaning compared with the numbers before the surgery and in one week after the surgery(P0.05), and 22 cases of moderate anxiety(19.64%),the number was increased compared with that before surgery, it presented statistical meaning(P0.05); 36 cases with depression in six months after the surgery(32.14%), it had no statistical meaning compared with the number before surgery, in one week after the surgery(P0.05), but 16 cases with moderate depression(14.29%), it was increased compared with that before the surgery, it had statistical meaning(P0.05). Conclusion: Successful PCI can't effectively improve depression and anxiety of CHD patients, as the course of the disease prolonged after the surgery,depression and anxiety would aggravate, and affect long-term effects of PCI therapy in treating CHD.
A Comparison of Naturally Enhanced Ion Acoustic Lines and Auroral Spectral Line Emissions

In this thesis, we present Naturally Enhanced Ion Acoustic Lines (NEIALs) observed with the EISCAT Svalbard Radar and a comparison with auroral emissions lines measured with a Meridian Scanning Photometer. NEIALs are short-lived events noticeable in the incoherent scatter spectra as an enhancement in one or both shoulders. It has been assumed that NEIALs are associated with an active red emission line in the aurora with an intensity above 10 kR. The red emission line intensity is associated with soft particle precipitation. However, NEIALs have also been observed at low altitudes where particles with higher energies are present, and they are also associated with a severe geomagnetic activity (>500 nT). In the literature, there are three competing theories which might explain the cause of NEIALs in the ionosphere, and they all require free energy provided by auroral particle precipitation. The theories are associated with partly different energy ranges, and auroral emission lines may give an indication of the energies of the precipitating particles. We analyzed four separate days where there were NEIAL incidents. For most of the events, the red line intensity was greater than 10 kR. This agrees with previous observations, and it supports the parametric decay of Langmuir wave theory, which requires soft particles precipitation. However, we have identified 7 events where the red line intensities were below 10 kR, and this weakens the requirement of 10 kR for NEIALs to appear. When NEIALs were observed at lower altitudes (<400 km), the intensity of the green line increased and the right shoulder in the spectra was the most enhanced. This could suggest that at these altitudes, the current driven instability might be the prevailing theory for the production of NEIALs. We also found that increased power in the incoherent scatter spectra might be associated with enhancements in the red line intensity. NEIALs were also observed when the geomagnetic activity was below 500 nT.
Confinement induced trajectory of a squirmer in a two dimensional channel

Micro-swimmers in confinement are encountered in a variety of scenarios such as locomotion of sperm cells in female reproductive tract, targeted drug delivery and biofilm formation. Using a squirmer, a surface actuating model, we simulate the trajectory of swimmers in a two-dimensional channel confinement. Exploiting the simplicity of squirmer model and performing the study in two dimensions we restrict the analysis to minimum number of parameters and isolate and analyze the confinement induced swimmer trajectories. Using exact solutions of two dimensional disk squirmers we first show that they behave qualitatively similar to three dimensional spherical squirmers near a repulsive, planar wall. In a channel, fully resolved flow and thus hydrodynamic interaction between the squirmer and the channel walls are obtained using the lattice Boltzmann method. We find that strong pullers and pushers slide along the channel walls, a behavior determined by single wall. In contrast, swimmers with weak force dipoles break the symmetry in behavior between pushers and pullers, and this behavior is determined by both walls of the channel. Weak pullers stay at the channel center and weak pushers execute an oscillatory trajectory spanning the channel width. Straight line trajectories can be solely characterized by a fixed point on a phase plane spanned by its orientation angle and the distance from the channel centerline whereas oscillatory trajectories can be solely characterized using its escape angle from the wall. The nature of the trajectories is found to be robust to the details of higher modes and the size of the confinement.
Effect of Xuezhikang on Blood Pressure of Patients with Essential Hypertension and Left Ventricular Remodeling

Objective To observe the efficacy of Xuezhikang on hypertension in patients suffering from blood pressure and remouding of left heart.Methods 60 patients with hypertension were divided into two groups randomly:Therapy group(n=30)was given with valstrtan 80mg per day.Control group(n=30) was given with 80mg per day add Xuezhikang 1200mg per day.Keep 4 months,evaluate the change of blood pressure and the TG,HDL-C,LDL-C,TC and the LVPWT,IVST.Results Drug treatment after 4 months,in B group than in A group was significantly higher in patients with HDL-C,TC,LDL-C and TG levels were significantly decreased,the difference was statistically significant(P0.05);two groups of patients with systolic and diastolic blood pressure decreased,B group was significantly lower than that in A group(P0.05);two patients LVMI decreased significantly,while B group of patients with LVMI was significantly lower than A group(P0.05). Conclusion Xuezhi kang by improving endothelial function,inhibition of myocardial hypertrophy and decreased blood pressure,reach the effect in hypertensive patients with left ventricular remodeling.
Pueraria Mirifica for Menopausal Symptom Relief and Tissue Support

Pueraria Mirifica, a member of the Leguminoseae family, is an herb indigenous to Thailand and has been researched extensively for its beneficial effects in the treatment of menopausal symptoms. Puerarin, the main isoflavone component of Pueraria Mirifica, modulates estrogen receptor expression and could be a safe alternative for the treatment of estrogen dependent conditions. Pueraria also contains the phytoestrogen miroestrol, which functions as a selective estrogen receptor modulator by competitively binding to estrogen and blocking excessive estrogen receptor stimulation. Pueraria root extract has no known side effects and no known drug interactions have been reported. Its beneficial effects on alleviating menopausal symptoms include the reduction of bone loss and hot flashes and the improvement of blood lipid profiles, which could lead to protection from cardiovascular disease. Results of clinical trials have suggested that Pueraria may be a safe alternative to traditional drugs because of its beneficial effects on bone density, genitourinary function and cardiovascular health without the side effects or risks associated with hormone replacement therapy.
Baterie sémantických rysů: data získaná od dětí z třetích tříd základních škol — zpráva z pilotního sběru dat

The Semantic Features Bank: Data Collected from Children Attending Their Third Year of Primary School — A Report Compiled from the Pilot Data Collection. The present text is focused on the pilot data collection which is the first part of the research on language acquisition in children. This acquisition research is aimed especially at semantic feature production and the acquisition of depth of meaning. The goal of the research is to collect a substantial amount of data to create a battery of semantic features in children. This battery is to become a tool for examining children’s vocabulary. The test group consists of children aged eight to nine. In a pilot data collection, children’s preferences for linear or nonlinear record of semantic features were tested. The second form (which is nonlinear and requires children to write semantic features in columns) is widely used in both Czech and foreign research environments. Three approaches to the data collection were tested. For the purpose of our research, some specific code rules were devised and designed to register the semantic information obtained. Some statistical calculations were made as well, which allows to create a notion about feature representations and also about relations between features and concepts. KLÍČOVÁ SLOVA /
Transport sédimentaire induit par un courant : effet du disponible sédimentaire

La quantite de sable mobilisable sur un fond sedimentaire, ou disponible sedimentaire, a un impact important sur la morphodynamique du fond sedimentaire. Il existe de nombreuses zones cotieres soumises a cette limitation du disponible sableux et qui jouent un role dans les phenomenes d'erosion-engraissement des plages ou bien peuvent impacter les activites humaines. L'impact de la quantite de sable mobilisable sur la morphodynamique d'un fond sedimentaire soumis a un courant est etudie experimentalement dans un canal a courant. La vitesse de l'ecoulement est telle que la contrainte au fond soit superieure a la contrainte critique de mise en mouvement des sediments. L'evolution temporelle des longueurs d'onde des rides montre une dependance avec le disponible sedimentaire. Il en est de meme la hauteur ou la longueur d'onde des structures a l'equilibre. Une re-analyse des donnees in-situ de Ferret 2011 est effectuee et les resultats obtenus sur les vitesses de migration sont compares aux resultats experimentaux. La dependance du transport sedimentaire par charriage et de la vitesse de migration avec le disponible sedimentaire peut etre modelisee par l'ajout d'un facteur dependant de la fraction surfacique du fond couverte de sediment mobilisable. L'impact du disponible sedimentaire sur le seuil de mise en mouvement des sediments est egalement aborde de maniere experimentale avec differentes rugosites pour le fond immobile. Deux methodes de detection du seuil de mise en mouvement sont developpees de maniere a automatiser au maximum la mesure. L'impact des rugosites testees et du disponible sedimentaire sur le seuil de mise en mouvement de sediments homogenes, faiblement heterogenes et coquilliers est etudie experimentalement.
Intussusception and rotavirus associated hospitalisation in New Zealand

Aims: To describe the epidemiology of intussusception and its relation to rotavirus associated hospitalisation in New Zealand. Methods: National hospital discharge data between January 1998 and June 2003 for all children younger than 3 years of age with intussusception were reviewed. Independently, children from the same age group, admitted to eight paediatric units with rotavirus gastroenteritis between May 1998 and May 2000, were identified prospectively. Epidemiological characteristics of cases with intussusception were compared with those of hospitalised rotavirus disease. Results: During the 5.5 year study period, there were 277 cases of intussusception and no deaths. Most (72% ) occurred in the first year of life (age adjusted incident rate 65 per 100 000 child-years, 95% CI 56 to 74). Risk of intussusception was less in females (risk ratio 0.58; 95% CI 0.43 to 0.78) and for Maori (risk ratio 0.52; 95% CI 0.35 to 0.77) when compared with European infants. In contrast to hospitalised rotavirus cases, intussusception peaked at a younger age and lacked seasonably. Conclusions: This study provides national baseline data on intussusception for future rotavirus vaccine programmes in New Zealand. Wildtype rotaviruses do not appear to have a major role in triggering intussusception. Prospective surveillance systems, using standardised case definitions and nested case-control methodology, are needed to further our understanding of the aetiology and epidemiology of intussusception.