Miracle-dz/UniFAR-FTUs huggingface dataset:
Clutter map detector for active diver detection sonar

This study presents a temporal approach based on the clutter map for the automatic detection of divers in the active sonar system. The noisy and non-stationary surrounding environment of shallow water makes the statistical parameters estimation of classical constant false alarm rate (CFAR) detectors more difficult. In the authors' system, they take advantage of the fixed positions of the transmitting and receiving arrays in order to improve the statistical parameters estimation over time. The resulting detection algorithm is analysed on simulated data for slow-moving targets and compared with classical spatial CFAR techniques on real data. The authors show that the proposed technique based on the clutter map provides better results than the classical CFAR techniques, particularly due to a reduction in false alerts. They finally analyse the spatial distribution of false alarms for which randomness is important for the performance of the tracking algorithm. They show that this distribution is more random with the clutter map detector than with classical CFAR techniques.
Comparison of 2D and 3D Digital Subtraction Angiography in Evaluation of Intracranial Aneurysms

Objective To compare 2D and 3D digital subtraction angiography(DSA) in evaluation of intracranial aneurysms,and show that 3D DSA can give more detailed information and is useful for diagnosis and therapy of intracranial aneurysms.Methods 42 consecutive patients with cerebral aneurysms underwent 2D and 3D DSA.After standard 2D DSA,rotational DSA was performed.Volume rendering(VR) was assessed randomly for ①overall image quality,②presence of aneurysm,③presence of aneurismal lobulation,④visualization of aneurismal neck,and ⑤relationship to adjacent vessels.Data analysis was conducted for 50 aneurysms treated with detachable platinum coils.Results ① 3 aneurysm that were not detected at 2D DSA was classified as probably or definitively present on the basis of rotational DSA.All aneurysm were classified as probably or definitively present on the basis of VR findings. ②Overall image quality of rotational DSA,VR was statistically inferior to that of the standard 2D DSA for visualization of distal arteries. ③However,VR images was significantly superior to those of standard 2D DSA for all other evaluations. ④For detection of lobulation,VR images were significantly superior to other images,and for visualization of aneurismal neck and relationship to neighboring arteries,VR images were significantly superior to that of rotational DSA.Conclusion Three-dimensional DSA provided more detailed information for evaluating cerebral aneurysms than that of standard 2D and rotational DSA.
Carbon Footprint: In search of a definition and method for Green Logistics

A Pegada de Carbono e um conceito que vem sendo utilizado para mensuracao de impactos relacionados a mudancas climaticas e que, quando utilizado para atividades logisticas, pode contribuir para a Logistica Verde. Apesar da ampla utilizacao, nao ha consenso quanto a sua definicao e metodos de calculo. Este trabalho levantou, por meio de uma revisao sistematica da literatura, definicoes e metodos existentes para o calculo de Pegada de Carbono aplicados a atividades de transporte. As definicoes mais frequentes foram comparadas quanto ao seu escopo de aplicacao, gases considerados e metodos sugeridos - topicos em que foram observadas divergencias. Ja os metodos mais recorrentes tambem foram comparados quanto ao escopo, gases, etapas de desenvolvimento e abordagens de calculo. Ao termino, observou-se que apesar da aparente diversidade de opcoes, todos os metodos sao compativeis com a maioria das definicoes e possuem a mesma equacao base de calculo, ou podem partir desta. Palavras-chave: Emissoes de GEEs. Impactos Ambientais. Mudancas Climaticas. Pegada de Carbono. Logistica de Transporte.
103 nm Ultra-Wideband Hybrid Raman/SOA Transmission Over 3 × 100 km SSMF

We report on the ultra-wideband (UWB) transmission of a 103 nm signal over 3 × 100 km of standard single mode fiber (SSMF), a widely-deployed fiber in terrestrial transmission networks. In such UWB systems, nonlinear effects such as stimulated Raman scattering (SRS) must be taken into account in the system design. We characterize the SRS impact in high power regime for this UWB spectrum. We study the evolution of SRS over the bandwidth when tilting the input spectrum to counter the inter-band power transition. We transmit 254 probabilistically constellation shaped (PCS)-64QAM channels over 300 km of SSMF and demonstrate a 107-Tb/s transmission throughput over a continuous 103 nm optical bandwidth using backward Raman pumping and SOA technology.
Word Representation Learning Based on Bidirectional GRUs With Drop Loss for Sentiment Classification

Sentiment classification is a fundamental task in many natural language processing applications. Neural networks have achieved great successes on the sentiment classification task in recent years, since recurrent neural networks and long-short-term memory networks have the ability to deal with sequences of different lengths and to capture contextual semantic information. However, the effectiveness of these methods is limited when used to extract contextual information from relatively long texts. Therefore, in our model, we apply bidirectional gated recurrent units to capture contextual information as far as possible when learning word representations, which may effectively reduce the noise compared to other methods. We also propose a novel loss function namely drop loss (DL) which makes the model focus on the hard examples—examples which are easily classified incorrectly—in order to improve the accuracy of the model. We experiment on four commonly used datasets, and the results show that the proposed method has a good performance on four datasets, and needs fewer parameters compared with recent benchmarks, such as CoVe, ULMFiT, embeddings from language models, and bidirectional encoder representations from transformers. Furthermore, we demonstrate that the classification performance of existing shallow network models can be significantly improved by using DL. In particular, the accuracy of the CNN+LSTM model improves 9% on the IMDB-10 dataset.
Compact circularly polarized metaresonator‐enabled deca‐band antenna

In this article, a circularly polarized small‐sized deca‐band monopole antenna is proposed and investigated. The proposed antenna consists of gun‐shaped monopole radiator and split‐ring resonator (SRR) array‐loaded partial ground plane present on the top and bottom sides of the substrate, respectively. The antenna is excited by a microstrip line feed and in order to get varied multiband operation with circular polarization, several unique configurations of SRRs are employed as metaresonators. Using the approach of combining resonances of metaresonators and monopole radiator, dual‐, triple‐, hexa‐, and deca‐band operations can be achieved. The permittivity and permeability of the composite metaresonator structure made of SRRs are extracted to illustrate the working principle of the designed multiband antenna. The proposed multiband antenna covers long‐term evolution, WLAN, WiMAX, bluetooth, satellite digital audio radio system (SDARS), radio altimeter, and satellite communication C‐band applications, on a single multifunctional device, much needed in the fast‐growing wireless industry. The antenna is fabricated on a 40 × 47 × 1.5748 mm3 RT Duroid 5880 substrate, and simulations were carried out with the help of the tool Ansys HFSS. The simulated and measured results are in good agreement.
Hybrid 7-Level Boost Active-Neutral-Point- Clamped (H-7L-BANPC) Inverter

The emerging active-neutral-point-clamped (ANPC) inverters with voltage-boosting capability are attractive for their low dc-link voltage requirement. These low voltage requirements enable a single-stage dc-ac power conversion, which improves the overall efficiency, reliability, and power density of the system. A high voltage gain of 1.5 was demonstrated in recent boost type ANPC topology; however, it was achieved at the expense of high voltage stress on some of its switching devices. This brief proposes an improved topology with reduced voltage stress and a lower number of components while retaining the merits of high voltage gain. The proposed topology is a hybrid of a T-type inverter and an H-bridge, which require only one floating capacitor and one less power switch than the aforementioned topology. One floating capacitor with self-voltage balancing capability is integrated to generate 7 output voltage levels. The proposed topology is analyzed and compared with recent boost ANPC topologies. Experimental results are presented for validation.
Aproveitamento da fibra de caju (Anacardium occidentale L.) na formulação de um produto tipo hambúrguer

As frutas desempenham papel fundamental na dieta e apresentam caracteristicas importantes para a nutricao humana. No Brasil, a produtividade do cajueiro e expressiva na regiao do Nordeste onde o agronegocio de seus subprodutos tem caracterizado o lancamento de diversos produtos em segmento industrial, em micro e nos pequenos produtores da cajucultura. Padroes de qualidade comuns para os produtos produzidos garantem a competitividade, estabelecendo metodologias solidas que possibilitam a caracterizacao e a padronizacao de novos produtos na linha de alimentos a serem comercializados. Acompanhando esta tendencia, este trabalho objetivou desenvolver e otimizar formulacoes de um produto tipo hamburguer a base do pedunculo do caju (fibra) apos a retirada do suco por liquidificacao como carne basica, avaliando aspectos quimicos, fisico-quimicos, microbiologicos e sensoriais. Neste trabalho foram formuladas e avaliadas tres amostras de hamburguer de caju nas formas de apresentacao crus e assados onde para a analise sensorial, foram selecionadas somente as formulacoes das amostras de hamburguer de caju assado. Concluiu-se que os hamburgueres de caju cru e assados apresentaram uma adequada estabilidade quimica e microbiologica e que a formulacao F 1 da amostra de hamburguer de caju assado apresentou boa aceitacao por parte dos consumidores sendo bastante viavel sua elaboracao.
The VLT Interferometric Measurements of Active Galactic Nuclei: Effects of Angular Momentum Distributions of Clouds in the Broad-line Region

A few months ago, GRAVITY at the Very Large Telescope Interferometry revealed the structure and kinematics of the broad-line region (BLR) of 3C 273. GRAVITY works with an unprecedented high spatial resolution through spectroastrometry where centers of photons at different wavelengths (λ-photoncenters) of active galactic nuclei are measured by differential phase curves (DPCs) in the wavelength range of the broad Paschenα line. Since Doppler effects govern wavelength shifts of photons sensitively depending on the degree of the ordered rotation ( ) of clouds in the BLR, the DPCs are expected to be a function of . Distributions of the angular momenta of clouds in the BLR could be determined by the formation processes of the BLR; however, is a totally unknown parameter so far. In this paper, we show that the DPC is sensitive to this free parameter, and should be taken into account for GRAVITY measurements of the BLR. It is then expected that joint observations of reverberation mapping campaigns and GRAVITY will allow us to obtain complete information about the structure and kinematics of the BLR, including the degree of ordered rotation of clouds, offering an opportunity to reveal the formation of the BLR, either from the tidal capture of clumps in the torus or from winds that developed from accretion disks.
Joint weighted least squares for normal decomposition of 3D measurement surface

3D optical and laser measurement devices can obtain the digital representation of physical objects by boundary surface meshes. Such a representation, however, has no semantic information to describe the object’s basic shape and its geometric details individually. Meanwhile, existing mesh filters, which process surface normals as signals defined on the Gauss sphere, mainly deal with noise corrupted by measurement and computational errors. While useful in that they preserve geometric structures, they are not intended for filtering out geometric details whose scales are much larger than that of noise. We assume that a 3D surface contains three geometric properties, i.e. geometric detail, structural pattern, and smooth-varying shape, and consider normals as surface signals defined over both the input mesh and the underlying surface of this mesh. We propose a joint weighted least squares (JWLS) to solve the challenging problem of how to filter out the detailed appearance (geometric details) and preserve intrinsic geometric properties (structural patterns) of any measurement surface simultaneously. Specifically, we first suppress high-contrast detail normals, and then detect salient feature normals to produce a feature-guided normal field, and finally jointly fit the original shape. We have shown that a variety of geometric processing tasks benefit from our JWLS, e.g. detail-preserving bas-relief modeling, detail-free mesh smoothing, and detail-enhancing Laplacian coating.
Proper name compounds: a comparative perspective

The article discusses compound formation involving proper names from a comparative perspective. While proper names can appear within compounds in English, this is not possible in Greek. The article argues that this follows from a basic difference between English and Greek: English, but not Greek, allows phrases as non-heads of right-headed compounds. As proper names in English are referential in the absence of a determiner, due to the process of D-N merger, they can still be recognized as such within compounds. This is not possible in Greek, where proper names require the presence of a determiner to establish reference.
Application of LAVA CE-MRA in hepatectomy for huge hepatic tumor

ObjectiveTo discuss the application of liver acquisition volume acceleration(LAVA)contrast-enhanced magnetic resonance angiography(CE-MRA) in hepatectomy for huge hepatic tumor.MethodsFrom January 2011 to October 2012,the hepatectomy was performed in 31 patients with hepatic tumors in 81st Hospital of PLA.The LAVA CE-MRA was performed before operation.The reconstruction of hepatic vasculature with multiplanar reconstruction(MPR) and measurement of remnant liver volume were performed to assess the feasibility of surgery.The results of liver function test before and after operation were also analyzed.ResultsCE-MRA showed the hepatic artery,portal veins,hepatic veins and their main branches as well as their relationship with the tumors clearly in all patients.The right and left hepatectomy were performed in 10 patients,lobectomy in 7,segmentectomy in 9 and wedge resection in 5.The remnant liver volume was 38%~84% in 10 patients with hemibepatectomy.All patients were survival after operation.The recovery of liver function occurred 7 days postoperatively in 93.5% of patients.ConclusionCombining with volumetry of remnant liver,LAVA CE-MRA which showed the vasculature of liver and their relationship with tumors clearly can play an important role in preoperative planning of liver resection.
Contraction Analysis of Monotone Systems via Separable Functions

In this paper, we study incremental stability of monotone nonlinear systems through contraction analysis. We provide sufficient conditions for incremental asymptotic stability in terms of the Lie derivatives of differential one-forms or Lie brackets of vector fields. These conditions can be viewed as sum- or max-separable conditions, respectively. For incremental exponential stability, we show that the existence of such separable functions is both necessary and sufficient under standard assumptions for the converse Lyapunov theorem of exponential stability. As a by-product, we also provide necessary and sufficient conditions for exponential stability of positive linear time-varying systems. The results are illustrated through examples.
Polarization and the Role of Digital Media

Nordicum-Mediterraneum. Icelandic E-Journal of Nordicum and Mediterranean Studies (DOI code, author's name and issue details are available on the journal's website) Group polarization is a serious and worrying phenomenon developing in democratic societies. It occurs «when members of a deliberating group move toward a more extreme point in whatever direction is indicated by the members’ predeliberation tendency» (Sunstein, 1999: 3-4). As a result, after a discussion where different points of view emerge, people tend to align to the opinion they were already tending to, before the discussion itself. For example, if confronted with someone that supports a different position, people who believe that vaccines are linked to autism will adhere to their pre-existing perspectives with much more conviction; the same will occur between left-leaning voters or pro-feminist activists and so on.
Planejamento estático da expansão de sistemas de transmissão de energia elétrica utilizando otimização por enxame de partículas

Esta dissertacao tem por objetivo a realizacao do planejamento estatico da expansao de sistemas de transmissao de energia eletrica via otimizacao por Enxame de Particulas (EP). A metodologia proposta faz uso de um Algoritmo Heuristico Construtivo (AHC) que tem a finalidade de pre-selecionar as linhas candidatas a expansao mais relevantes, de modo a reduzir o espaco de busca e consequentemente, aumentar a eficiencia do processo de otimizacao bioinspirado. Desta forma, a metodologia proposta pode ser dividida em duas etapas: (i) Obtencao do conjunto reduzido de rotas atraves do AHC, com o objetivo de identificar os caminhos relevantes a expansao e, assim, diminuir o espaco de busca; (ii) Utilizacao da otimizacao por enxame de particulas e das informacoes heuristicas advindas da primeira etapa, com o objetivo de encontrar o custo minimo de expansao atraves de um numero reduzidos de particulas. Em ambas as etapas a rede de transmissao e representada pelo modelo linearizado de fluxo de carga, onde as decisoes de expansao sao incorporadas ao problema atraves das equacoes originais do modelo CC. O criterio de selecao da expansao e realizado atraves de heuristica, de modo a evitar a explosao combinatoria referente as alternativas de investimento. A metodologia proposta e aplicada ao sistema Garver e a dois sistemas reais equivalentes a regiao Sul e Sudeste do Brasil.
Theory of quantum gravity information processing

The theory of quantum gravity is aimed to fuse general relativity with quantum theory into a more fundamental framework. The space of quantum gravity provides both the non-fixed causality of general relativity and the quantum uncertainty of quantum mechanics. In a quantum gravity scenario, the causal structure is indefinite and the processes are causally non-separable. Here, we provide a model for the information processing structure of quantum gravity. We show that the quantum gravity environment is an information resource-pool from which valuable information can be extracted. We analyze the structure of the quantum gravity space and the entanglement of the space-time geometry. We study the information transfer capabilities of quantum gravity space and define the quantum gravity channel. We reveal that the quantum gravity space acts as a background noise on the local environment states. We characterize the properties of the noise of the quantum gravity space and show that it allows the separate local parties to simulate remote outputs from the local environment state, through the process of remote simulation.
Meta-analysis of Lagged Regression Models: A Continuous-time Approach

In science, the gold standard for evidence is an empirical result which is consistent across multiple studies. Meta-analysis techniques allow researchers to combine the results of different studies. Due to the increasing availability of longitudinal data, studying lagged effects is increasingly popular also in meta-analytic studies. However, in current practice, little attention is paid to the unique challenges of meta-analyzing these lagged effects. Namely, it is well known that lagged effects estimates change depending on the time that elapses between measurement waves. This means that studies that use different uniform time intervals between observations (e.g., 1 hour vs 3 hours or 1 month vs 2 months) can come to very different parameter estimates, and seemingly contradictory conclusions, about the same underlying process. In this article, we introduce, describe, and illustrate a new meta-analysis method (CTmeta) which assumes an underlying continuous-time process, and compare it with current practice.
reabilitação pulmonar em longo prazo na doença pulmonar obstrutiva crônica Pulmonary rehabilitation in chronic obstructive pulmonary disease

Introduction: The chronic obstructive pulmonary disease (COPD) impairs the functional status with consequent impairment of the activities of daily living (ADL). This study aimed to investigate the effect of a long term pulmonary rehabilitation (PR) on the functional status, dyspnea and on the BODE index in patients with COPD. case report: This is a retrospective and descriptive study. The records of five patients that participated in a year PR program were analyzed. Assessments about spirometry, body mass index (BMI), London Chest Activity of Daily Living (LCADL) and Medical Research Council (MRC) scales and six-minute walking test (6MWT) were collected. After a year participating in the PR program, most patients improved their functional capacity, dyspnea and reduced the risk of mortality. conclusion: A year of PR seemed to maintain the improvement in functional capacity obtained after 24 training sessions in patients with COPD.
INSTALAÇÃO DE IMPLANTE UNITÁRIO EM FLAPLESS COM GUIA DE FRESAS: RELATO DE CASO

A fim de melhorar a qualidade da recuperacao pos-operatoria dos pacientes submetidos a tratamentos de reabilitacao estetica e funcional, em regiao de boca, busca-se constantemente aprimorar e desenvolver tecnicas cirurgicas para obter melhor resultado cirurgico, alem de menor tempo de recuperacao e menos agressao ao paciente. Este trabalho tem como objetivo relatar caso em que foi utilizado um conjunto de manobras cirurgicas com o uso de ferramentas para maior precisao, que auxiliam nesses fatores de recuperacao e diminuicao de fatores de erro trans-cirurgico, demonstrando-se menos agressivas ao paciente e possibilitando sua reabilitacao em menor tempo e com um pos-operatorio mais favoravel. Para isso utilizou-se de tecnicas cirurgicas em Flapless , uso de guia de fresas Safe Drill para maior precisao e menos agressao ao fresar o local de instalacao dos implantes e uso do implante UNITITE da marca SIN, o qual possui tratamento de superficie nanoativa ( HAnano Surface ), macro geometria exclusiva e metodo de instalacao que instaura sitema Overdrilling de Supra fresagem ossea de correto nivel de aquecimento e posterior torque, somados com a superficie tratada.