bluuebunny/crossref_metadata_2025 huggingface dataset:
C-RISE: A Post-hoc Interpretation Method of Black-box Models for SAR ATR
Authors: Zhu Mingzhe , Cheng Jie , Lei Tao , Feng Zhenpeng , Zhou Xianda , Liu Yuanjing , Chen Zhihan
Published: April 2023

The integration of deep learning methods, especially Convolutional Neural Networks (CNN), and Synthetic Aperture Radar Automatic Target Recognition (SAR ATR) has been widely deployed in the field of radar signal processing. Nevertheless, these methods are frequently regarded as black-box models due to the limited visual interpretation of their internal feature representation and parameter organization. In this paper, we propose an innovative approach named C-RISE, which builds upon the RISE algorithm to provide a post-hoc interpretation technique for black-box models used in SAR Images Target Recognition. C-RISE generates saliency maps that effectively visualize the significance of each pixel. Our algorithm outperforms RISE by clustering masks that capture similar fusion features into distinct groups, enabling more appropriate weight distribution and increased focus on the target area. Furthermore, we employ Gaussian blur to process the masked area, preserving the original image structure with optimal consistency and integrity. C-RISE has been extensively evaluated through experiments, and the results demonstrate superior performance over other interpretation methods based on perturbation when applied to neural networks for SAR image target recognition. Furthermore, our approach is highly robust and transferable compared to other interpretable algorithms, including white-box methods.
Analysis of Accuracy in Clinical Identification of the Implant Site: Pilot Study With Thermo-Printed Templates
Authors: Cumbo Enzo , Gallina Giuseppe , Messina Pietro , Scardina Giuseppe Alessandro
Published: April 2023

In implantology, among the key choices, to obtain predictable results, it is essential to establish, on the basis of radiographic examinations, the bone site where to insert the implants; these selected locations must be identified first on the mucosa and then on the cortical bone. Surgical guides represent a valid aid especially in complex cases with more than 3 or 4 implants, whereas in single implant cases they are rarely used. This study evaluates the clinical precision with which the implant sites, on the patient's mucosa, are identified in surgical procedures planned without any templates. The verification of this precision is carried out through thermo-printed templates with radiopaque references which could however help the clinician to identify these sites in a simple, rapid and economical way.
Amine Decorated Methacrylic Acid based Inverse Vulcanized Polysulfide for Effective Mercury Removal from Wastewater
Authors: Ghumman Ali Shaan Manzoor , Shamsudin Muhammad Rashid Bin , Waheed Ammara , Sabir Rabia , Abbasi Amin , Sami Abdul
Published: April 2023

Mercury (Hg (II)) contamination is indefatigable global hazard which causes severe permanent damages to human health. Extensive research has been carried out to produce mercury adsorbents however they are still facing certain challenges limiting their upscaling. Herein we reported the synthesis of novel amine impregnated inverse vulcanized copolymer for effective mercury removal. Poly(S-MA) was prepared using sulfur and methacrylic acid employing inverse vulcanization method following by functionalization. The polyethylenime (PEI) was impregnated on poly(S-MA) to increase the adsorption active sites. The developed adsorbent was then characterized using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). FTIR confirmed formation of copolymer and successful impregnation of PEI and SEM revealed composite porous morphology of the copolymer. Amine impregnated copolymer (amine@poly(S-MA)) outperformed poly(S-MA) in mercury as it showed 20 % superior performance with 44.7 mg/g maximum adsorption capacity. The adsorption data best fits the pseudo second order which indicates that the chemisorption is most influential mechanism in this case indicating the involvement of NH2 in mercury removal. The adsorption is mainly monolayer on homogenous surface as indicated by 0.76 value of Redlich-Peterson exponent (g) which describes the adsorption nature advent from R2 value of 0.99.
Effect of Ethyl Nitroacetate, Ethyl 2-Nitropropionate and 3-Nitropropionic Acid on Ruminal Fermentation Characteristics and Dry Matter Degradability under In Vitro Conditions
Authors: Ochoa-García Pedro Antonio , Anderson Robin C. , Rodríguez-Almeida Felipe Alonso , Maynez-Peréz Adrian Omar , Felix-Portillo Monserrat , Božić Aleksandar K. , Arévalos-Sánchez Martha María , Vargas-Bello-Pérez Einar , Muro-Reyes Alberto , Corral-Luna Agustin
Published: April 2023

The objective of this study was to investigate the effects of ethyl nitroacetate, ethyl 2-nitropropionate and 3-nitropropionic acid on ruminal production of CH4, H2, volatile fatty acids (VFAs) and on dry matter digestibility of ground alfalfa under in vitro conditions. In vitro incubations were conducted as consecutive batch cultures. Total gas and amounts of methane produced by ruminal microbes were decreased by all nitrocompounds (P < 0.05). Total production of VFAs was significantly reduced for all the nitrocompounds (P < 0.05) except for NPA. DM disappearance was not affected (P >0.05) by treatment.
Tilting-Pad Bearings -- Contact Flexibility of the Pivot
Authors: Wagner Laurence F
Published: April 2023

The modeling of tilting-pad journal and thrust bearings presents a level of complexity beyond that of bearings of fixed-arc geometry, particularly with regard to dynamic influences. With tilting-pad bearings, the theory surrounding the fluid film must be complemented with representative modeling of the pad dynamics. What has been recognized in recent decades has been the significance of the pad support, in particular the flexibility of the pivot region of the pad. The typical model for including the stiffness of the pivot has been based on Hertzian contact theory. Some researchers have been noting that the Hertzian theory does not permit sufficient flexibility in the pivot region. It is suggested that the contact mechanics at the pivot would be better represented as a pairing of rough surfaces. The modeling used here is based on a statistical asperity micro-contact theory for rough-surface line contact that has been extended to include contact stiffness. This model has been applied to the determination of the effective dynamic properties of tilting-pad bearings. The results show that pivot stiffness can be as low as one-third the stiffness determined by Hertzian theory. Comparison to published experimental results confirms the significance of the rough-surface modeling, particularly for the line contacts associated with rocker-back tilting pads.
Evaluation of Spiral Pneumatic Rubber Actuator using Finite Element Analysis for Radial Transportation
Authors: Jang Yujin , Nabae Hiroyuki , Suzumori Koichi
Published: April 2023

Emerging soft actuators with various soft materials and traveling-wave motion have been frequently discussed. Various configurations and the resulting performances have been proposed, and it is very challenging for soft actuators in realizing large strokes. This study presents an experimentally validated nonlinear finite element model to predict the deformation produced by a spiral pneumatic rubber actuator to generate traveling-wave motion. The actuator consists of a membrane mounted on a rubber substrate with three air chambers in a spiral configuration, simplifying the actuator's structure. The sequential deformations of the successive chambers interact with each other and produce radial traveling-waves on the membrane surface, driving the objects placed on the actuator. Finite element analysis using ANSYS computer software analyzed the elastic movement by considering the influence of different initial structural types. The structure with three different length ratios was introduced using the four parameters: membrane thickness, chamber width, chamber depth, and wall thickness. The simulation results indicated an optimal structure with specific ratios. A reasonable correlation was obtained during experimental validation; the predicted displacement values were approximately 17% smaller than the experimental values. Finally, the transportation performance of the prototype was tested and a velocity of 2.28 mm/s in the desired direction was achieved. We expect that our demonstration will expand the range of applications of the spiral pneumatic rubber actuator to include conveying or worm-like robots.
Characterization of Herz-type Besov-Morrey and Triebel-Lizorkin-Morrey Spaces
Authors: Abdulkadirov Ruslan , Lyakhov Pavel
Published: April 2023

The main goal of this article is the characterization of Herz-type Besov-Morrey spaces K˙p,qαN˙μ,rs and Triebel-Lizorkin-Morrey spaces K˙p,qαE˙μ,rs via ball means of differences, atomic, molecular and wavelet decompositions. There are provided necessary facts for implying these results, which can help to explore such spaces on different domains in further researches. Proposed spaces allow to extend the class of studying functions, containing Leray projection, heat semi-group and other operators, which can be helpful in exploring weak, strong and mild solutions of nonlinear partial differential equations.
No-Reference Image Quality Assessment based on a Multitask Image Restoration Network
Authors: Chen Fan , Fu Hong , Yu Hengyong , Chu Ying
Published: April 2023

When the image quality is evaluated, the human visual system (HVS) infers the details in the image through its internal generative mechanism. In this process, the HVS integrates both local and global information of the image, utilizes contextual information to restore the original image information, and compares it with the distorted image information for image quality evaluation. Inspired by this mechanism, a no-reference image quality assessment method is proposed based on a multitask image restoration network. The multitask image restoration network generates a pseudo-reference image as the main task and produces structural similarity index measure map as an auxiliary task. By mutually promoting the two tasks, a higher quality pseudo-reference image is generated. In addition, when predicting the image quality score, both the quality restoration features and the difference features between the distorted and reference images are used, thereby fully utilizing the information from the pseudo-reference image. To enable the model to focus on both global and local features, a multi-scale feature fusion module is proposed. Experimental results demonstrate that the proposed method achieves excellent performance on both synthetically and authentically distorted databases.
Evaluation and Comparison of the Dissociated Phoria State at Rear and Distance Fixation of Children, Using Three Different Techniques and the Prediction of Their Binocular State
Authors: Ibrahimi Danjela , Rodríguez-Reséndiz Juvenal
Published: April 2023

Purpose: This research, compared the dissociated phoria state at near and distance fixation in free space, using three different techniques; the Howell test, alternate Cover test and Thorington test. Methods: A total of 220 healthy Mexican children from Querétaro, 5.06 to 17.11 years of age, participated in this study. The magnitude of phorias at both distances was quantified using each of the tests, starting from the least to the most disruptive one. The degree of stereopsis, break, and recovery value of the near point of convergence were also analyzed to understand the interaction among them and their impact on the sensorimotor balance of the visual system. Results: Despite their different ways of dissociation, for patients with exophoria or esophoria at near, the alternate Cover test and Thorington provide similar values. If examining the exophoria state at distance, the alternate Cover and Howell test are similar, whereas for the esophoria, the alternate Cover and Thorington give similar results. The break value and the magnitude of exophoria at near can predict the stereopsis degree. The break value and the magnitude of exophoria are related to each other. Gender doesn´t relate to any variable, whereas age, is associated with the degree of stereopsis and the break of NPC. Conclusions: The statistical analysis showed that the alternate Cover and Thorington test, despite their different ways of dissociation, can substitute one another, whereas the Howell test, cannot be interchangeable with the other two. The different way of dissociation this test uses, can be related to the obtained results. By analyzing the crucial elements of the binocular visual system, can help professionals determine the interaction among them and their impact on its sensorimotor balance.
Promoting Sustainable Agricultural Waste Management and Industrial Symbiosis through an Innovative Web Platform
Authors: Varvaringos Ioannis , Skourtanioti Eva , Letsos Georgios , Rizoudi Evgenia , Makras Ektoras , Panagiotopoulou Margarita , Papadaki Sofia , Valta Katerina
Published: April 2023

Sustainable bio-economy is considered to be one of the most promising routes towards the transition to a circular and climate-neutral economy. The valorization industry of bio-waste and agri-food by-products represents a key player in bioeconomy. In this article the design and the development of a web platform aiming at promoting synergies enabling the agricultural waste valorization is presented. The platform consists of: (i) the AgriPLaCE Waste Management Database which provides the users with an extended list of potential utilization measures for a variety of agricultural waste streams (ii) the AgriPLaCE Synergies Tool which aims to create synergies between different actors involved in the value chain from agricultural waste production to waste treatment and new valuable products’ exploitation. At the initial stage, the conceptual design of both tools took place by conducting an in-depth analysis for the user needs and services alongside the system architecture. Following, the AgriPLaCE platform development stage took place, with the implementation of all the necessary subsystems. The results showed that multiple potential collaborations can arise by the use of the AgriPLaCE platform, while users can also deepen on alternative and emerging treatment technologies and valuable products that can derive from a wide range of agricultural waste streams.
Electro-elastic Modeling of Multi-Step Transitions in two Elastically Coupled and Sterically Frustrated 1D Spin-Crossover Chains
Authors: Traiche Rachid , Oubouchou Hassane , Boukheddaden Kamel
Published: April 2023

1D spin crossover (SCO) solids which convert between the low-spin (LS) and the high-spin (HS) states are widely studied in the literature due to their diverse thermal and optical characters which allows obtaining many original behaviors, such as large thermal hysteresis, incomplete spin tran-sitions, as multi-step spin transitions with self-organized states. In the present work, we investigate the thermal behaviors of a system of two-elastically coupled 1D mononuclear chains, using the electro-elastic model, by including an elastic frustration in the nearest neighbors (nn) bond length distances of each chain. The chains are made of SCO sites that are coupled elastically through springs with their nn and next-nearest neighbors. The elastic inter-chain coupling includes diagonal springs, while the nn inter-chains distance is fixed to that of the high-spin state. The model is solved using MC simulations, performed on the spin states and the lattice distortions. When we only frustrate the first chain, we found a strong effect on the thermal-dependence of the HS fraction of the second chain, whose, by lowering its transition temperature which is also accompanied with the appearance of a significant residual HS fraction at low temperature. In the second step, we frustrate both chains by imposing different frustration rates and found that, for high frustration values, the thermal dependence of the total HS fraction exhibits three step and even four step spin transitions. The careful examination of the spin state structures in the plateau regions revealed the existence of special antiferro-elastic structure of type LSLS-HSHS-LSLS-HSHS along the first chain, and HSHS-LSLS-HSHS-LSLS along the second, also showing that the two chains seem to be antifer-ro-elastically coupled. This type of organization is interesting, because it anticipates the possible existence of periodic structures made of alternate 1D antiferro-like HS-LS strings coupled in the ferro-like fashion along the interchain direction in the 2D case.
Manager- and Farmer-Oriented Irrigation Water Allocation and Optimization: Taking Neimen District in Kaohsiung as Example
Authors: Huang Wen-Te , Lau Tsz-Kin , Huang Chung-Fah , Lo Yi-Ting , Huang Kai-Hsiang
Published: April 2023

Due to the impacts from climate change, the allocation of water resources must urgently be optimized worldwide to ensure that the needs of both water managers and farmers are balanced. In this study, manager-oriented and farmer-oriented assessment models were developed for irrigation water optimization and allocation. The distance from water sources and hydraulic head were the main factors in the manager-oriented assessment model; crop value, water demand of crops, and soil type were additional factors in the farmer-oriented assessment model. The developed assessment models were used to assess irrigation water allocation in five villages in Neimen District. Cadasters at high elevation were discovered to not be suitable for cultivation of crops because of the difficulties in constructing irrigation facilities and the loss of irrigation water during transportation. The result obtained from the manager-oriented assessment system was related to the costs involved in the construction and maintenance of irrigation facilities, which indicated that cadasters located at long distances from water sources and at high elevation are unsuitable for cultivation. By contrast, the result obtained from the farmer-oriented assessment system was related to the profits of farmers and revealed that more cadasters would be suitable for cultivation if suitable crops were chosen.
Ultrafast Nonlinear Optical Activities of Near-Infrared Aza-BODIPY Derivatives
Authors: Ren Can , Xiao Shuyu , Cui Yanyan , Hu Juguang , Lin Xiaodong , He Tingchao
Published: April 2023

The near-infrared (NIR) organic dyes with strong ultrafast nonlinear optical (NLO) activities are of importance for various applications. However, such kinds of dyes are still scarce. In this work, we have compared the NLO properties of two NIR Aza-BODIPY derivatives, in which the strong electron-donating groups, namely 4-(N, N-dimethylamino) phenyl and 1-ethyl-1,2,3,4-tetrahydroquinoline groups, are connected with the cores of Aza-BODIPY. Z-Scan experimental results show that two Aza-BODIPY derivatives exhibit strong saturation absorption and large modulation depth under the excitation of femtosecond pulses at 800 nm. Under 1300 nm excitation, two derivatives exhibit strong nonlinear refraction. In addition, the Aza-BODIPY derivatives also display effective two-photon excited fluorescence emission in the wavelength range of 1200-1600 nm. Based on the experimental results, it is found that 1-ethyl-1,2,3,4-tetrahydroquinoline group can more effectively enhance the NLO properties of Aza-BODIPY derivatives compared with the 4-(N, N-dimethylamino) phenyl group, thus providing new possibilities for the design and development of NIR NLO materials.
Reduced basis solver for stochastic Galerkin formulation of Darcy flow with uncertain material parameters
Authors: Béreš Michal
Published: April 2023

In this contribution, we present a solution to the stochastic Galerkin (SG) matrix equations coming from the Darcy flow problem with uncertain material coefficients in the separable form. The SG system of equations is kept in the compressed tensor form and its solution is a very challenging task. Here, we present the reduced basis (RB) method as a solver which looks for a low-rank representation of the solution. The construction of the RB consists of iterative expanding of the basis using Monte Carlo sampling. We discuss the setting of the sampling procedure and an efficient solution of multiple similar systems emerging during the sampling procedure using deflation. We conclude with a demonstration of the use of SG solution for forward uncertainty quantification.
Numerical realization of the Bayesian inversion accelerated using surrogate models
Authors: Bérešová Simona
Published: April 2023

The Bayesian inversion is a natural approach to the solution of inverse problems based on uncertain observed data. The result of such an inverse problem is the posterior distribution of unknown parameters. This paper deals with the numerical realization of the Bayesian inversion focusing on problems governed by computationally expensive forward models such as numerical solutions of partial differential equations. Samples from the posterior distribution are generated using the Markov chain Monte Carlo (MCMC) methods accelerated with surrogate models. A surrogate model is understood as an approximation of the forward model which should be computationally much cheaper. The target distribution is not fully replaced by its approximation; therefore, samples from the exact posterior distribution are provided. In addition, non-intrusive surrogate models can be updated during the sampling process resulting in an adaptive MCMC method. The use of the surrogate models significantly reduces the number of evaluations of the forward model needed for a reliable description of the posterior distribution. Described sampling procedures are implemented in the form of a Python package.
The impact of uncertain parameters on ratchetting trends in hypoplasticity
Authors: Chleboun Jan , Runcziková Judita , Krejčí Pavel
Published: April 2023

Perturbed parameters are considered in a hypoplastic model of granular materials. For fixed parameters, the model response to a periodic stress loading and unloading converges to a limit state of strain. The focus of this contribution is the assessment of the change in the limit strain caused by varying model parameters.
Residual norm behavior for Hybrid LSQR regularization
Authors: Havelková Eva , Hnětynková Iveta
Published: April 2023

Hybrid LSQR represents a powerful method for regularization of large-scale discrete inverse problems, where ill-conditioning of the model matrix and ill-posedness of the problem make the solutions seriously sensitive to the unknown noise in the data. Hybrid LSQR combines the iterative Golub-Kahan bidiagonalization with the Tikhonov regularization of the projected problem. While the behavior of the residual norm for the pure LSQR is well understood and can be used to construct a stopping criterion, this is not the case for the hybrid method. Here we analyze the behavior of norms of approximate solutions and the corresponding residuals in Hybrid LSQR with respect to the Tikhonov regularization parameter. This helps to understand convergence properties of the hybrid approach. Numerical experiments demonstrate the results in finite precision arithmetic.
DGM for real options valuation: Options to change operating scale
Authors: Hozman Jiří , Tichý Tomáš
Published: April 2023

The real options approach interprets a flexibility value, embedded in a project, as an option premium. The object of interest is to valuate real options to change operating scale, typical for natural resources industry. The evolution of the project as well as option prices is decribed by partial differential equations of the Black-Scholes type, linked through a payoff function given by a type of the flexibility provided. The governing equations are discretized by the discontinuous Galerkin method over a finite element mesh and they are integrated in temporal variable by an implicit Euler scheme. The special attention is paid to the treatment of early exercise feature that is handled by additional penalty term. The capabilities of the approach presented are documented on the selected individual real options from the reference experiments using real market data.
Finding vertex-disjoint cycle cover of undirected graph using the least-squares method
Authors: Lamač Jan , Vlasák Miloslav
Published: April 2023

We investigate the properties of the least-squares solution of the system of equations with a matrix being the incidence matrix of a given undirected connected graph $G$ and we propose an algorithm that uses this solution for finding a vertex-disjoint cycle cover (2-factor) of the graph $G$.
Determination of the initial stress tensor from deformation of underground opening -- theoretical background and applications
Authors: Malík Josef , Kolcun Alexej
Published: April 2023

In this paper a method for the detection of initial stress tensor is proposed. The method is based on measuring distances between some pairs of points located on the wall of underground opening in the excavation process. This methods is based on the solution of eighteen auxiliary problems in the theory of elasticity with force boundary conditions. The optimal location of the pairs of points on the wall of underground work is studied. The pairs must be located so that the condition number of a certain matrix has the minimal value, which guarantees a reliable estimation of initial stress tensor.
Numerical optimization of parameters in systems of differential equations
Authors: Martínek Josef , Kučera Václav
Published: April 2023

We present results on the estimation of unknown parameters in systems of ordinary differential equations in order to fit the output of models to real data. The numerical method is based on the nonlinear least squares problem along with the solution of sensitivity equations corresponding to the differential equations. We will present the performance of the method on the problem of fitting the output of basic compartmental epidemic models to data from the Covid-19 epidemic. This allows us to draw several conclusions on the natural limitations of these models and their validity.
New methods in collision of bodies analysis
Authors: Němec Ivan , Vala Jiří , Štekbauer Hynek , Jedlička Michal , Burkart Daniel
Published: April 2023

The widely used method for solution of impacts of bodies, called the penalty method, is based on the contact force proportional to the length of the interpenetration of bodies. This method is regarded as unsatisfactory by the authors of this contribution, because of an inaccurate fulfillment of the energy conservation law and violation of the natural demand of impenetrability of bodies. Two non-traditional methods for the solution of impacts of bodies satisfy these demands exactly, or approximately, but much better than the penalty method. Namely the energy method exactly satisfies the conservation of energy law, whereas the kinematic method exactly satisfies the condition of impenetrability of bodies. Both these methods are superior in comparison with the penalty method, which is demonstrated by the results of several numerical examples.
Mixed precision GMRES-based iterative refinement with recycling
Authors: Oktay Eda , Carson Erin
Published: April 2023

With the emergence of mixed precision hardware, mixed precision GMRES-based iterative refinement schemes for solving linear systems $Ax=b$ have recently been developed. However, in certain settings, GMRES may require too many iterations per refinement step, making it potentially more expensive than the alternative of recomputing the LU factors in a higher precision. In this work, we incorporate the idea of Krylov subspace recycling, a well-known technique for reusing information across sequential invocations, of a Krylov subspace method into a mixed precision GMRES-based iterative refinement solver. The insight is that in each refinement step, we call preconditioned GMRES on a linear system with the same coefficient matrix $A$. In this way, the GMRES solves in subsequent refinement steps can be accelerated by recycling information obtained from previous steps. We perform numerical experiments on various random dense problems, Toeplitz problems, and problems from real applications, which confirm the benefits of the recycling approach.
Testing the method of multiple scales and the averaging principle for model parameter estimation of quasiperiodic two time-scale models
Authors: Papáček Štěpán , Matonoha Ctirad
Published: April 2023

Some dynamical systems are characterized by more than one time-scale, e.g. two well separated time-scales are typical for quasiperiodic systems. The aim of this paper is to show how singular perturbation methods based on the slow-fast decomposition can serve for an enhanced parameter estimation when the slowly changing features are rigorously treated. Although the ultimate goal is to reduce the standard error for the estimated parameters, here we test two methods for numerical approximations of the solution of associated forward problem: (i) the multiple time-scales method, and (ii) the method of averaging. On a case study, being an under-damped harmonic oscillator containing two state variables and two parameters, the method of averaging gives well (theoretically predicted) results, while the use of multiple time-scales method is not suitable for our purposes.
Wildfires identification: Semantic segmentation using support vector machine classifier
Authors: Pecha Marek , Langford Zachary , Horák David , Tran Mills Richard
Published: April 2023

This paper deals with wildfire identification in the Alaska regions as a semantic segmentation task using support vector machine classifiers. Instead of colour information represented by means of BGR channels, we proceed with a normalized reflectance over 152 days so that such time series is assigned to each pixel. We compare models associated with $\mathcal{l}1$-loss and $\mathcal{l}2$-loss functions and stopping criteria based on a projected gradient and duality gap in the presented benchmarks.
Different boundary conditions for LES solver Palm 6.0 used for ABL in tunnel experiment
Authors: Řezníček Hynek , Geletič Jan , Bureš Martin , Krč Pavel , Resler Jaroslav , Vrbová Kateřina , Trush Arsenii , Michálek Petr , Beneš Luděk , Sühring Matthias
Published: April 2023

We tried to reproduce results measured in the wind tunnel experiment with a CFD simulation provided by numerical model PALM. A realistic buildings layout from the Prague-Dejvice quarter has been chosen as a testing domain because solid validation campaign for PALM simulation of Atmospheric Boundary Layer (ABL) over this quarter was documented in the past. The question of input data needed for such simulation and capability of the model to capture correctly the inlet profile and its turbulence structure provided by the wind-tunnel is discussed in the study. The PALM dynamical core contains a solver for the Navier-Stokes equations. By default, the model uses the Large Eddy Simulation (LES) approach in which the bulk of the turbulent motions is explicitly resolved. It is well validated tool for simulations of the complex air-flow within the real urban canopy and also within its reduced scale provided by wind tunnel experiments. However the computed flow field between the testing buildings did not correspond well to the measured wind velocity in some points. Different setting of the inlet boundary condition was tested but none of them gave completely developed turbulent flow generated by vortex generators and castellated barrier wall place at the entrance of the aerodynamic section of the wind tunnel.
Godunov-like numerical fluxes for conservation laws on networks
Authors: Vacek Lukáš , Kučera Václav
Published: April 2023

We describe a numerical technique for the solution of macroscopic traffic flow models on networks of roads. On individual roads, we consider the standard Lighthill-Whitham-Richards model which is discretized using the discontinuous Galerkin method along with suitable limiters. In order to solve traffic flows on networks, we construct suitable numerical fluxes at junctions based on preferences of the drivers. Numerical experiment comparing different approaches is presented.
On finite element approximation of fluid structure interaction by Taylor-Hood and Scott-Vogelius elements
Authors: Vacek Karel , Sváček Petr
Published: April 2023

This paper focuses on mathematical modeling and finite element simulation of fluid-structure interaction problems. A simplified problem of two-dimensional incompressible fluid flow interacting with a rigid structure, whose motion is described with one degree of freedom, is considered. The problem is mathematically described and numerically approximated using the finite element method. Two possibilities, namely Taylor-Hood and Scott-Vogelius elements are presented and implemented. Finally, numerical results of the flow around the cylinder are shown and compared with the reference data.
Princípios curriculares da avaliação da aprendizagem no ensino médio integrado do Instituto Federal Catarinense
Authors: Machado José , Schaefer Rodrigo , Plácido Reginaldo Leandro
Published: April 2023

Este estudo, fundamentado no conceito de currículo integrado, na perspectiva Histórico-Cultural (Vygotsky, 1993) e na proposta de avaliação mediadora (Hoffmann, 2019), discute os princípios curriculares que orientam a avaliação da aprendizagem nos cursos técnicos integrados ao  Ensino Médio do Instituto Federal Catarinense (IFC). Para as análises, foi incluído o Projeto Político Pedagógico Institucional (PPPI), bem como a Organização Didática dos Cursos do IFC, as Diretrizes para a Educação Profissional Técnica Integrada ao Ensino Médio e uma amostra dos Projetos Pedagógicos dos Cursos Técnicos integrados ao Ensino Médio do IFC. Utilizou-se a técnica de Análise Textual Discursiva para a interpretação analítica dos dados. Os resultados apontaram (a) uma convergência entre os princípios de avaliação contidos nos documentos institucionais do IFC e os fundamentos pedagógicos dos Institutos Federais e (b) a articulação entre a avaliação da aprendizagem recomendada pelos Projetos Pedagógicos dos Cursos Integrados ao Ensino Médio do IFC com a perspectiva de ensino-aprendizagem presente nos documentos institucionais do IFC.
Parques Urbanos: proposta de elaboração de índice de qualidade como subsídio à gestão
Authors: Santos Thamires , Silva Carlos Eduardo , Bezerra Anselmo
Published: April 2023

Parques urbanos proporcionam aos visitantes uma série de benefícios. Elementos da infraestrutura associados à sua localização afetam a usabilidade e a percepção dessas contribuições. Estudos de qualidade para áreas verdes urbanas oferecem dados de desempenho e são excelentes ferramentas de monitoramento para o poder público. Este estudo elaborou um índice de qualidade dos parques urbanos de Recife (PE) considerando duas dimensões: observação direta das características dos parques e percepção dos usuários. A metodologia foi adaptada de um modelo da Fundação Aron Birmann e atribuiu notas através de um questionário de avaliação contendo cinco categorias de desempenho com 27 subcategorias e 103 critérios. Somou-se a esses dados, 9 subcategorias representadas pela usuários dos parques. A média geral dos parques atingiu a nota 3,43, considerada regular na escala adotada de 0 a 5. Como resultados, os parques: Macaxeira (3,37), Lagoa do Araçá (2,96), Caiara (2,79) e Apipucos (2,3) ficaram abaixo da média. O parque Apipucos, último colocado, foi o único a atingir a classificação “ruim”. Em outro sentido os parques: Jaqueira (4,29). Santana (3,90), Dona Lindu (3,80), Santos Dumont (3,64), Treze de Maio (3,61) e Sítio da Trindade (3,60), atingiram a classificação ótimo e bom. Conclui-se que a geração de indicadores é uma ferramenta útil para avaliar a gestão e uso dos parques urbanos e balizar novas políticas, como discussões sobre concessão desses espaços à iniciativa privada e/ou terceiro setor.
Fractional derivatives as weighted average of historical values: an application to COVID-19 in Brazil
Authors: Lopes Michele Martins , Pedro Francielle Santo , Santos José Paulo Carvalho dos , Ibá´ñez Daniel Sánchez , Esmi Estevão , Barros Laécio Carvalho de
Published: April 2023

The memory effect is an interesting tool that can be seen in fractional differential equations. To show this clearly, in this paper we prove that the Caputo derivative of a function 𝑓, as well as the Riemann-Liouville integral and derivative, are proportional to a weighted average of the historical values of 𝑓 or 𝑓 ′. For this, we use the statistical expectation of functions, whose random variable follows a beta distribution. Moreover, through the respective probability density functions, for each operator we specify the weight of the historical values of the function to determine its current value, according to the values of the fractional order of the derivative. Furthermore, to prove the effectiveness of the memory effect to describe real phenomena, we compared a classic model with its fractional version to model COVID-19 in Brazil.
Fibroma Ossificante Periférico Atípico - Relato de Caso
Authors: Marques Bianca Sabrina Guimarães , Gomes Letícia da Silva Soares , Barreiros André Luiz Carvalho , Fujimoto Luciana Botinelly Mendonça , Abrahim Naíza Menezes Medeiros
Published: April 2023

O Fibroma Ossificante Periférico é uma lesão considerada uma das patologias bucais mais comuns, ocorre de forma quase que exclusiva na gengiva inserida e geralmente envolve a papila interdental. Sua etiologia é pouco esclarecida, mas alguns fatores irritativos gengivais, como cálculos dentais, próteses mal adaptadas, são considerados como possíveis fatores causais. A remoção cirúrgica é o tratamento de escolha e a lesão apresenta como achado histopatológico marcante, com a presença de calcificações de variadas formas e tamanhos. O objetivo desse artigo é relatar um caso clínico de fibroma ossificante periférico, suas características clínicas , tratamento e achados histopatológicos. Concluiu-se  que  o FOP é  uma  lesão  reacional  da  gengiva, nodular  e  assintomática, que clinicamente pode apresentar-se semelhante a outras lesões como o granuloma piogênico, necessitando de  exame  histopatológico  para  a  confirmação  do  diagnóstico e acompanhamento clínico, visto que se a abordagem cirúrgica não for adequada e os fatores irritativos não forem completamente removidos, a chance de recidiva da lesão é alta.
NOMEAÇÃO DE OFICIAIS DA LINHA COMBATENTE PARA A DIREÇÃO DE HOSPITAIS MILITARES DO EXÉRCITO:
Authors: De Souza Guimarães Júnior Ernani , Pacheco da Silva Eron
Published: April 2023

Este trabalho analisa a nomeação de oficiais da linha bélica para a direção de hospitais militares do Exército Brasileiro, e os correlatos desafios para a liderança. Tal abordagem se justifica tendo em vista a recente nomeação, em 2020, de dois oficiais de carreira das armas, formados na AMAN, para a direção de hospitais militares da Força Terrestre, quebrando um paradigma de sempre ser selecionado um militar da área de saúde para conduzir um hospital. O objetivo deste estudo é analisar se a nomeação desses oficiais de carreira das armas para a direção de hospitais do Exército dificultará a consecução de suas atividades, no que concerne à liderança sobre os subordinados. Esse propósito será conseguido mediante pesquisa qualitativa, com revisão bibliográfica e documental. A análise demonstrou que qualquer pessoa, seja da área de saúde ou não, tem condições de assumir a direção de um hospital civil ou militar, desde que devidamente preparada com conhecimentos de administração e gestão hospitalar. Evidenciou-se, ainda, que são necessárias habilidades e competências pessoais para desenvolver a liderança em um nosocômio, mais especificamente em um Hospital do Exército, pelas peculiaridades que possui em relação a organizações civis de saúde.
CULTURA NACIONAL EM HOFSTEDE E A DINÂMICA DE DISSEMINAÇÃO DA COVID-19:
Authors: Almeida Eric da Costa , Xavier Filho Jose Lindenberg Julião , Castro Jose Cícero de , Melo Letícia Barbosa de
Published: April 2023

O objetivo deste estudo é compreender como as dimensões culturais que definem as culturas nacionais em Hofstede se vinculam à dinâmica de disseminação do contágio da Covid-19 nas nações mais afetadas pela pandemia. Para a realização da pesquisa montou-se um quadro de informações com 76 nações mais afetadas pela Covid-19, tendo o percentual da população atingida pela Covid-19 como variável dependente e as dimensões da cultura nacional em Hofstede como variáveis independentes. Os dados foram coletados em dois momentos, com e sem a variante Ômicron e, devido a causalidade a ser testada, se utilizou de regressão linear multivariada. Como resultado, o modelo ajustado explica 29,31% da variação do contágio antes da Ômicron e 39,66% da variação do contágio pós Ômicron, com destaque para as dimensões “individualismo”, “masculinidade” e “aversão à incerteza”, todas com nível de significância estatística ao nível de 10%. Esses resultados reforçam a necessidade de considerar o tecido social como um sustentáculo para políticas públicas de enfrentamento a endemias e pandemias, aumentando a eficiência com a qual a sociedade enfrenta situações que afetam seu bem-estar.
PERCEPÇÃO DAS MULHERES ACERCA DAS ESTRATÉGIAS DE MARKETING SOCIAL EMPREGADAS PELO GOVERNO BRASILEIRO EM PROL DA CONSCIENTIZAÇÃO CONTRA O CANCER DE MAMA
Authors: Silva Jersone Tasso Moreira , Veloso Thaís Mara Rodrigues , E Sousa Caissa Veloso
Published: April 2023

Objetivo: Analisar a percepção das mulheres, diagnosticadas ou não pelo câncer de mama, na Região Metropolitana de Belo Horizonte, MG, em relação às estratégias de marketing social empregadas pelo governo brasileiro. Referencial Teórico: Baseia-se em estudos desenvolvidos em marketing social e campanhas de marketing social em prol do combate ao câncer de mama. Método: Trata-se de um estudo descritivo com abordagem qualitativa e com entrevistas semiestruturadas em um grupo de 27 mulheres. As entrevistadas foram realizadas no período de janeiro a fevereiro de 2019. Resultados: As imagens recentes lembradas pelas entrevistadas retornam às campanhas realizadas por instituições privadas, não campanhas realizadas pelo governo brasileiro e em suas diversas esferas. Observou-se que os sujeitos da pesquisa apenas apontavam o mês de realização destas campanhas, apenas mencionavam o Outubro Rosa. Conclusão: As campanhas governamentais que tratam o assunto câncer de mama, não têm se fixado na memória da população feminina, uma vez que a maioria dos sujeitos não se recordava destas campanhas. Aponta-se a necessidade de rever a periodicidade com que as campanhas são realizadas.
INDICADORES-CHAVE DESEMPENHO PARA GESTÃO HOSPITALAR
Authors: Pizetta Luciane , Reis Augusto da Cunha , Mexas Mirian Picinini
Published: April 2023

INTRODUÇÃO: Devido o interesse dos gestores de saúde pública em utilizar ferramentas gerenciais eficientes, , a gestão de indicadores é um instrumento que permite monitorizar o desempenho de forma eficiente, com identificação de possíveis gargalos e maior eficácia aos processos de trabalho. OBJETIVO: Identificar Indicadores Chave de Desempenho através da avaliação de 16 especialistas oncologistas para avaliar as fases dos cuidados de pacientes de uma instituição pública de referência oncológica. MÉTODO: Estudo descritivo de caráter qualitativo e quantitativo com aplicação do método RAND/UCLA com especialistas em oncologia para selecionar indicadores de desempenho válidos. RESULTADO: Após reuniões e consenso formal do grupo, formou-se uma lista principal de KPIs classificados em três fases: pré, durante e pós-tratamento/cuidado. CONCLUSÃO: Foi possível ter discussões enriquecedoras que permitiram ter uma visão abrangente deste instrumento de avaliação e possibilidade de melhorias para práticas de gestão, bem como, a possibilidade de aplicabilidade do método em outras organizações.
Empty Homes and Dead Goat Bones on Xiji Yu: Field notes of a cultural landscape and co-creating digital deep maps
Authors: Morris James
Published: April 2023

This article documents the abandoned cultural landscape found on the islet of Xiji in the Penghu Archipelago, in the Taiwan Strait, a heritage site that has been slipping into ruins and rewilding since 1978. This article is written as a response and contribution to the dialogue begun by Cal Flyn (2021) on nature’s return to abandoned spaces. In documenting the ruination of Xiji’s cultural landscape, I suggest that a new motivation for exploration and documentation of abandoned environments such as Xiji and Cal Flyn’s case study island of Swona lies in anticipating the needs of future researchers. The digital turn in the social sciences and humanities has produced conditions in which simple digital survey and research tools are capable of documenting, capturing and reproducing entire cultural landscapes with ease. Collaborative data collection is now a driving force behind spatial humanities, enabling the production of navigable time maps, deep maps and spatiotemporal storyboards. This article presents the cultural landscape of Xiji as it existed in 2017, relying on photographs and observations, and tracks the process of its rewilding through accounts from informants and earlier documentation. Although Xiji’s material heritage continues to deteriorate, digital tools have made it possible to reproduce and reclaim it as a dynamic digital space that can be mapped across time.
Reimagining the Juan Fernández Islands: Cruise Tourism and the Commodification of Nature
Authors: Chant Elizabeth , Gándara Chacana Natalia
Published: April 2023

This article examines the arrival of cruise ship tourism to the Juan Fernández Islands (Chile) in the first half of the 20th century, considering how this particular form of tourism reconfigured the economic and cultural image of the islands. Bringing together domestic and international advertising and voyage accounts, we assess how the Juan Fernández Islands were incorporated into both Chilean and foreign tourist discourses as an idealised paradise. We highlight how cruise ship tourism marketing rebranded these islands as a ‘romantic’ and exotic destination, reinforcing colonial ideas of isolation and remoteness. In so doing, we underline how cruise tourism facilitated new forms of engagement with the island environment that were distinct from the islanders’ aquapelagic relationality at the interface of water and land. We also showcase how the tourist industry exacerbated the exploitation and commodification of the islands’ natural environment, developing a cultural identity for Juan Fernández that also saw the renegotiation of their place in Chilean national identity, thus contributing to the history of small islands and their modern cultural representations.
An Androgynous Alliance: Evelyn De Morgan and ‘The Little Mermaid’
Authors: Rose Cecilia
Published: April 2023

Evelyn De Morgan (1855–1919) was a second wave Pre-Raphaelite artist, best known for her large-scale paintings of female figures. In this article, I conduct a detailed study of her androgynous mermaid triptych based upon Hans Christian Andersen’s ‘The Little Mermaid’ (1837), taking into account the artist’s biographical influences, as well as the cultural significance of the story itself. The three oil paintings, namely ‘The Little Sea Maid’ (1886), ‘The Sea Maidens’ (1888) and ‘Daughters of The Mist’ (1914), depict three different scenes in the tale, from the mermaid’s transition into human form, to her sisters’ plea for her to return to sea, to her eventual death and absorption into a purgatory-like state. I argue that these three paintings act both as a vehicle through which to support the ongoing fight for women’s rights, and as a symbol for De Morgan’s concept of theistic evolution. These two motives have been identified separately in the limited scholarship on these works, but the possibility that both exist simultaneously is as yet unexplored.