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Physicochemical characteristics and bioactive compounds of three puçá (Mouriri pusa Gardner) varieties, an underexploited fruit from the Brazilian Cerrado 来自巴西塞拉多的一种未充分开发的水果,三个pu<s:1> <s:1> (Mouriri pusa Gardner)品种的理化特性和生物活性化合物
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-20 DOI: 10.4025/actascitechnol.v45i1.61765
Juliana Pinto de Lima, E. E. Nunes, L. A. Borges, A. Saczk, G. Pinheiro, Paulo Rogério Siriano Borges, Eduardo Valério de Barros Vilas Boas
Puçá fruits are native to the Cerrado biome yet little explored, presenting different varieties with distinct fruit peel colors. Although puçá fruits have been known to exhibit a good source of bioactive compounds, the phenolic profile of some varieties remains unknown. Based on this context, our research aimed to evaluate the chemical composition and bioactive compounds and characterize for the first time the phenolic profile in yellow puçá, brown puçá, and black puçá by high-performance liquid chromatography coupled with diode array detection (HPLC–DAD). The three puçá varieties contained considerable quantities of important food constituents, such as high concentrations of vitamin C, carotenoids and phenolic compounds. These fruits are mostly composed of phenolic acids, with p-coumaric acid being the major compound in all varieties, while ellagic acid was detected only in the brown puçá. Moreover, (−)-epicatechin was found only in the yellow puçá. This study is the first to report the identification of the phenolic profile in puçá. Moreover, our data indicate that the three fruit varieties present a promising chemical composition, suggesting that they may serve as potential sources of natural antioxidants. In addition, these findings can contribute to the establishment of puçá as a novel ingredient for formulations with functional claims.
pup 水果原产于塞拉多生物群系,但很少被探索,呈现出不同的品种,不同的果皮颜色。尽管已知pu 水果具有良好的生物活性化合物来源,但某些品种的酚类成分仍不清楚。在此背景下,本研究旨在利用高效液相色谱-二极管阵列检测(HPLC-DAD)技术,对黄浆、棕浆和黑浆的化学成分和生物活性成分进行评价,并首次对其酚类成分进行表征。这三种椰 品种含有相当数量的重要食物成分,如高浓度的维生素C、类胡萝卜素和酚类化合物。这些果实主要由酚酸组成,其中对香豆酸是所有品种的主要化合物,而鞣花酸仅在棕色果肉中检测到。此外,(−)-表儿茶素仅存在于黄色浆中。本研究首次报道了pup 中酚类成分的鉴定。此外,我们的数据表明,这三种水果品种具有很好的化学成分,表明它们可能是天然抗氧化剂的潜在来源。此外,这些发现可以有助于将聚 作为一种具有功能声明的新型配方成分。
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引用次数: 0
A novel moving window-based power spectrum features for single-channel EEG classification using machine learning 一种新的基于移动窗口的功率谱特征用于单通道脑电分类
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-20 DOI: 10.4025/actascitechnol.v45i1.61684
A. M. Alqudah, Shoroq Qazan, Yusra M. Obeidat
Electroencephalogram (EEG) signal classification is a crucial and very difficult task. Meanwhile, extracting features that are representative and able to discriminate different types of EEG signals is a complex task. Such features are usually fed to machine learning algorithms to classify the EEG signals based on the extracted features. This paper proposed a highly accurate and real-time features extraction method that can be used to help physicians in detecting different types of seizures and states in EEG signals characterized by a set of features extracted from the power spectrum of the EEG window. This is achieved by applying the following four steps. First, the EEG signals dataset contains different classes of EEG signals: Normal Eye Closed, Normal Eye Opened, Focal Seizure, Non-Focal Seizure, and Ictal Seizure activities. Second, each EEG signal has a length of 4097 samples sampled with a sampling frequency of 173.6 Hz which resulted in 23.6 seconds in length, this signal will be truncated into windows (Sub-signals) with a length of 349 samples (Approximately 2 seconds) with a total number of 12 windows for each signal. Afterward, the Fourier Transform (FT) based power spectrum will be computed for each window, then a set of different features are extracted from each window's FT power spectrum, and these features are classified using different Machine Learning (ML) algorithms. The results showed that the proposed methodology yields around 98% accuracy for the five different classification scenarios using different ML algorithms. The suggested method is hence robust, fast, real-time, accurate, and simple.
脑电图(EEG)信号分类是一项关键而又困难的工作。同时,提取具有代表性且能够区分不同类型脑电信号的特征是一项复杂的任务。这些特征通常被输入到机器学习算法中,根据提取的特征对脑电信号进行分类。本文提出了一种高精度、实时性高的特征提取方法,可以帮助医生检测EEG信号中不同类型的癫痫发作和状态,这些信号是通过EEG窗口功率谱提取的一组特征来表征的。这可以通过应用以下四个步骤来实现。首先,EEG信号数据集包含不同类别的EEG信号:正常闭眼、正常睁眼、局灶性癫痫发作、非局灶性癫痫发作和癫痫发作活动。其次,每个EEG信号的采样长度为4097个样本,采样频率为173.6 Hz,长度为23.6秒,该信号将被截断为长度为349个样本(约2秒)的窗口(子信号),每个信号共有12个窗口。然后,计算每个窗口的傅立叶变换(FT)功率谱,然后从每个窗口的FT功率谱中提取一组不同的特征,并使用不同的机器学习(ML)算法对这些特征进行分类。结果表明,对于使用不同ML算法的五种不同分类场景,所提出的方法的准确率约为98%。该方法具有鲁棒性好、快速、实时、准确、简便等特点。
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引用次数: 0
Optimization of reinforced concrete columns via genetic algorithm 基于遗传算法的钢筋混凝土柱优化设计
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-20 DOI: 10.4025/actascitechnol.v45i1.61562
Isabella Silva Menezes, Vinicius Navarro Varela Tinoco, A. Christoforo, Florisvaldo Cardozo Bomfim Junior, Tarniê Vilela Nunes Narques
Reinforced concrete is an essential material in the modern world, and the use of genetic algorithms that aim at the optimization of the structures of this material is an increasingly widespread tool. The objective of the present work was to propose a method by means of a Genetic Algorithm to find the optimized geometry of a rectangular reinforced concrete column based on its cost. The two main parts of the work were developed as: a geometry verification algorithm that received height, base, layers in x and y directions, diameters of transverse and longitudinal steel rebar as the main parameters of the proposed sections, and a genetic algorithm that generated 240 random populations and selected them, crossed among them and then generated new 100 generations of individuals, followed by selection of optimized ones by its penalized cost. The generations had more and more favorable individuals and it was possible to determine an optimized geometry for the proposed example. It is, therefore, concluded that genetic algorithms are useful tools for optimizing reinforced concrete parts with multiple parameters. The proposed algorithm methodology really checks and selects the best individuals for the sections proposed by engineers, and larger initial populations are essential to find a minimum global cost among the different options.
钢筋混凝土是现代世界中必不可少的材料,使用遗传算法来优化这种材料的结构是一种越来越广泛的工具。本文的目的是提出一种基于成本的矩形钢筋混凝土柱的优化几何形状的遗传算法。工作的两个主要部分是:一个几何验证算法,它以高度、基底、x和y方向的层数、横向和纵向钢筋的直径作为建议截面的主要参数;一个遗传算法,它产生240个随机种群并选择它们,在它们之间交叉,然后产生新的100代个体,然后根据惩罚成本选择最优的个体。这几代人有越来越多的有利个体,可以为所提出的例子确定一个优化的几何形状。因此,遗传算法是优化多参数钢筋混凝土零件的有效工具。所提出的算法方法确实为工程师提出的部分检查并选择最佳个体,并且较大的初始种群对于在不同选项中找到最小的全局成本是必不可少的。
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引用次数: 2
The influence of urban and mineral expansion on surface temperature variation 城市和矿物扩张对地表温度变化的影响
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-19 DOI: 10.4025/actascitechnol.v45i1.60117
A. Santos, Fernando Luiz de Paula Santil, S. Carbone, Claudionor Ribeiro da Silva
This study addresses the variations in surface temperature - Land Surface Temperature (LST) - in the urban network of the municipality of Paracatu, Minas Gerais State, Brazil, which has humid tropical climate of savannah (type Aw), and in the open pit mining activity located near its urban perimeter, between the years 1990 and 2019. The area was chosen because the municipality is the most important of its microregion, being an attractive pole of work due to the presence of several companies, with emphasis on the mining company Kinross Gold Corporation, which is one of the largest open pit mines and gold producers in Brazil. Images of LANDSAT-5 and 8 satellites were used, which underwent a resampling and standardization of pixels to become the same size. The satellite choice and the period of analysis was based on the beginning of mining activity in the municipality, and a year that was able to represent its current state. Subsequently, the LST calculations made available by the United States Geological Survey (USGS) were applied. When comparing the results of both areas of the first and last year of the series, there was an increase in the variation of the mean, minimum and maximum LST, a fact that is related with the suppression of vegetation for the growth of both areas. Such suppression, together with anthropic occupation, is responsible for one of the neighborhoods (28) that present the highest average variation of LST over the years. On the other hand, the neighborhood that presented the smallest variation on this parameter (47) was recently incorporated as a neighborhood in the city’s Master Plan because it is currently being occupied by the construction of an allotment, evidencing that the temporal variability of LST in the municipality occurs in relation to anthropic presence and its magnitude.
本研究解决了1990年至2019年间,巴西米纳斯吉拉斯州帕拉卡图市城市网络中地表温度-地表温度(LST)的变化,该城市拥有湿润的热带草原气候(Aw型),以及位于城市周边的露天采矿活动。之所以选择该地区,是因为市政当局是其最重要的微区域,由于几家公司的存在,成为一个有吸引力的工作极,重点是矿业公司Kinross Gold Corporation,这是巴西最大的露天矿山和黄金生产商之一。使用了LANDSAT-5和8卫星的图像,这些图像经过重新采样和像素标准化以达到相同的尺寸。卫星的选择和分析的时期是基于市政当局采矿活动的开始,以及能够代表其当前状态的年份。随后,应用了美国地质调查局提供的地表温度计算。当比较这两个地区的第一年和最后一年的结果时,平均、最小和最大LST的变化都有所增加,这与这两个地区的植被生长受到抑制有关。这种抑制,加上人为占用,是造成多年来地表温度平均变化最高的邻域之一(28)的原因。另一方面,该参数变化最小的社区(47)最近被纳入城市总体规划,因为它目前正在建设一个分配区,这表明市政当局的地表温度的时间变化与人类活动的存在及其幅度有关。
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引用次数: 2
Lifetime of forage grasses submitted to different water regimes using survival analysis 饲料草在不同水分条件下的生存分析
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-19 DOI: 10.4025/actascitechnol.v45i1.60820
L. R. R. Lucena, M. L. D. M. V. Leite, Álefe Chagas de Lima Costa, João Pedro Soares Caraciolo, J. R. Silva
Forage plants are considered one of the main factors for livestock development, for they present perennial growth, resistance to drought, adaptation to hot climate regions, and wide soil diversity. The water deficit causes changes in their anatomy, physiology, and biochemistry, which can affect all stages of development and productivity. For these reasons, it is necessary to evaluate the lifetime of forage plants under water stress conditions. The design used was a factorial scheme, consisting of two types of grasses, and five levels of water replacement, with ten replications. During the experimental period, grasses were evaluated daily, with more than 70% of leaf area in senescence being considered a dead plant the one with more than 70% of leaf area in senescence. Urochloa mosambicensis lifetime was of 61 days for grasses that were not irrigated, 131 and 195 days for those that received 25% and 50% of field capacity, and greater than 240 days for those that were irrigated with 75 and 100% of field capacity. Digitaria pentzii lifetime was of 54 days for grasses that were not irrigated, 117 and 152 days for those that received 25 and 50% of field capacity, and greater than 240 days for those that were subjected to water regime 75 and 100% of field capacity. Irrigation with 25 and 50% of field capacity doubles and triplicates, respectively, the lifetime of grasses when compared to plants that did not receive irrigation. Irrigations with 75% or more of field capacity do not promote grass mortality.
饲草植物具有多年生、抗旱、适应炎热气候、土壤多样性广等特点,被认为是家畜发展的主要因素之一。水分不足会导致它们的解剖、生理和生物化学发生变化,从而影响发育和生产力的各个阶段。因此,有必要对水分胁迫条件下饲料植物的寿命进行评价。使用的设计是一个因子方案,包括两种类型的草,五个水平的水替换,10个重复。试验期间,每天对禾草进行评价,以叶面积衰老超过70%的禾草为死株。在未灌溉的禾草中,蚊子尿藻的寿命为61 d,在25%和50%的田间灌溉条件下为131和195 d,在75%和100%的田间灌溉条件下,蚊子尿藻的寿命大于240 d。不灌溉条件下五子柳的寿命为54 d, 25%和50%的灌溉条件下的寿命为117 d和152 d, 75%和100%的灌溉条件下的寿命大于240 d。与未接受灌溉的植物相比,以25%和50%的田间容量灌溉,草的寿命分别增加了一倍和三倍。75%或更多农田容量的灌溉不促进草的死亡。
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引用次数: 0
Low-cost multipurpose sensor network integrated with iot and webgis for fire safety concerns 低成本多用途传感器网络与物联网和webgis集成,用于消防安全问题
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-19 DOI: 10.4025/actascitechnol.v45i1.61451
Iran Carlos Caria Sacramento, V. O. Fernandes, N. Rösch, Emerson de Andrade Marques
Fire emergencies cause severe damage to Brazilian federal universities. An appropriate and efficient tool to prevent or detect such events early is multisensory networks from the Internet of Things (IoT). In this study, we present the stages of development of a WebGIS system which integrates the IoT that allows the detection and helps manage such incidents. The approach consists of a network of multipurpose sensors that can identify different sources of fire hazards. If a potential source is registered, information about environmental conditions is transmitted in real-time to the system. Depending on the severity level, an alert is issued to WebGIS. Location is represented on a map. The entire system consists of single-board devices. Software components are based on open-source tools. The whole network only needs little power and, therefore, theoretically, could be carried out as an autonomous system powered by batteries. The entire system has been tested with flame, temperature, gas, smoke, and humidity sensors. The experiments allowed us to show its potential, formulate recommendations and indications for future studies.
火灾紧急情况对巴西联邦大学造成严重破坏。早期预防或检测此类事件的适当且有效的工具是来自物联网(IoT)的多感官网络。在本研究中,我们介绍了WebGIS系统的开发阶段,该系统集成了允许检测和帮助管理此类事件的物联网。该方法由一个多用途传感器网络组成,可以识别不同的火灾危险源。如果一个潜在的源被注册,有关环境条件的信息将实时传输到系统。根据严重程度,向WebGIS发出警报。位置在地图上表示。整个系统由单板器件组成。软件组件基于开源工具。整个网络只需要很少的电力,因此,理论上,可以作为一个由电池供电的自主系统来运行。整个系统已经用火焰、温度、气体、烟雾和湿度传感器进行了测试。实验使我们能够展示其潜力,为未来的研究提出建议和指示。
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引用次数: 0
An MINLP model for the minimization of installation and operational costs in water distribution networks 供水管网安装和运行成本最小化的MINLP模型
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-19 DOI: 10.4025/actascitechnol.v45i1.59993
G. Cassiolato, E. Carvalho, M. Ravagnani
Water Distribution Networks (WDN) are important systems for industrial processes and urban centers. WDN can be formed by reservoirs, pipes, nodes, loops, and pumps and its complete design can be formulated as an optimization problem. The majority of published papers in the open literature use meta-heuristics for problem solution, as well as hydraulic simulators to calculate pressures and velocities. In the present study, a Mixed Integer Non-Linear Programming (MINLP) model was developed to the synthesis of WDN considering the minimization of the WDN total cost, given by the sum of installation and operational costs, which is the novelty in the paper. All the hydraulic calculations were included in the model (mass and energy balances and velocity and pressure upper and lower bounds), avoiding the use of additional software. Reformulation techniques are applied to the model considering the use of logarithms and disjunctive programming. Two case studies extracted from real WDN were used to test the model and global optimization techniques were employed to achieve the results. The results obtained show that the operational costs play an important role in the WDN system design.
给水管网(WDN)是工业过程和城市中心的重要系统。WDN可以由水库、管道、节点、环路和泵组成,其完整设计可以表述为一个优化问题。在公开文献中发表的大多数论文都使用元启发式来解决问题,以及液压模拟器来计算压力和速度。本文提出了一种基于混合整数非线性规划(MINLP)的WDN综合模型,该模型考虑了WDN总成本(即安装成本和运行成本之和)的最小化,这是本文的新颖之处。所有的水力计算都包含在模型中(质量和能量平衡以及速度和压力的上限和下限),避免了使用额外的软件。考虑到对数和析取规划的使用,将重构技术应用于模型。利用从实际WDN中提取的两个案例对模型进行了验证,并采用全局优化技术实现了结果。研究结果表明,运营成本在WDN系统设计中起着重要的作用。
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引用次数: 0
Stanford & Smith nonlinear model in the description of CO2 evolved from soil treated with swine manure: maximum entropy prior 斯坦福&史密斯描述猪粪处理土壤产生的二氧化碳的非线性模型:最大熵先验
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-19 DOI: 10.4025/actascitechnol.v45i1.56360
Edilson Marcelino Silva, S. A. Jane, F. A. Fernandes, Édipo Menezes da Silva, J. A. Muniz, T. J. Fernandes
The dynamics of organic waste decomposition in the soil can be described by nonlinear regression models, however, the theory for regression models is valid for sufficiently large samples, and in general, in small samples, these properties are unknown. One of the methods for data analysis that has been widely used to overcome this problem is the bayesian inference, as it has the advantage of being able to work with small samples, in addition to allowing the incorporation of information from previous studies, and even having a probability distribution for the parameters, consequently, to present a direct interpretation for the credibility interval. However, criticism has been made because of the effect that a prior subjective distribution can have on posterior distribution. One way of determining objective prior is through of maximum entropy prior distributions. For data of organic waste decomposition in the soil, little is known about the probability distributions of the parameters. The present study aimed to use of maximum entropy prior distributions to the parameters of the Stanford & Smith nonlinear model. In addition, using simulated data, to understand the effect that hyperparameters of prior distribution has on the posterior curve, and also to apply the methodology in the description of CO2 mineralization data from swine manure applied to the soil surface. Data analyzed came from an experiment conducted in a laboratory that evaluated the carbon mineralization of swine manure on the soil surface over time. The posterior distributions were obtained, so the bayesian methodology with maximum entropy prior was efficient in the study of the Stanford & Smith nonlinear model to the data of carbon mineralization of swine manure on the soil surface.
有机废物在土壤中的分解动力学可以用非线性回归模型来描述,然而,回归模型的理论对于足够大的样本是有效的,一般来说,在小样本中,这些特性是未知的。被广泛用于克服这一问题的数据分析方法之一是贝叶斯推理,因为它的优点是能够处理小样本,除了允许从以前的研究中合并信息外,甚至还具有参数的概率分布,因此,可以直接解释可信区间。然而,由于先验主观分布对后验分布的影响,批评已经提出。确定目标先验的一种方法是通过最大熵先验分布。对于有机废弃物在土壤中的分解数据,我们对这些参数的概率分布知之甚少。本研究的目的是利用最大熵先验分布的参数斯坦福&史密斯非线性模型。此外,利用模拟数据,了解先验分布的超参数对后验曲线的影响,并将该方法应用于猪粪土壤表层CO2矿化数据的描述。分析的数据来自实验室进行的一项实验,该实验评估了猪粪在土壤表面随时间的碳矿化。结果表明,最大熵先验贝叶斯方法可以有效地应用Stanford & Smith非线性模型对猪粪土壤表面碳矿化数据进行研究。
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引用次数: 1
Skin cancer classification dermatologist-level based on deep learning model 基于深度学习模型的皮肤科皮肤癌分类
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-19 DOI: 10.4025/actascitechnol.v45i1.61531
Saad Albawi, Muhanad Hameed Arif, Jumana Waleed
Medical image analysis is a significant burden for doctors, therefore, it is used to supplement image processing. Many medical images are assumed to be diagnosed as accurately as healthcare experts when the precision of image detection and recognition in an image processing approach matches that of a human being. Artificial Intelligence (AI) based predictive modelling is an important component of many healthcare solutions. This paper develops and implements a neural network-based method for skin cancer prediction to expose the neural network's strength in this field. This method determines which form of deep learning is best for diagnosing diseases with an accuracy exceeds human ability in terms of speed and accuracy, and determines the optimum number of layers and neurons in each layer for both Convolutional Neural network (CNN) and Deep Neural Network (DNN) to obtain the best possible precision. The results of the proposed method showed impressive results, especially for CNN. There is a clear superiority of CNN over DNN. The CNN (which relies on convolution filters) provides great results in extracting features due to the focus on the intended area of the image without the surrounding area region of interest. This led to a remarkable decrease in the number of parameters and the speed of attaining results with higher accuracy. The results indicated that CNN has a high accuracy rate compared with the other existing methods where the accuracy rate of CNN is 98.5%.
医学图像分析对医生来说是一个很大的负担,因此,它被用来补充图像处理。当图像处理方法中的图像检测和识别精度与人类的精度相匹配时,许多医学图像被认为与医疗保健专家一样准确地诊断出来。基于人工智能(AI)的预测建模是许多医疗保健解决方案的重要组成部分。本文开发并实现了一种基于神经网络的皮肤癌预测方法,揭示了神经网络在该领域的优势。该方法确定了哪种形式的深度学习最适合诊断疾病,其速度和准确性超过人类的能力,并确定了卷积神经网络(CNN)和深度神经网络(DNN)的最佳层数和每层神经元的最佳数量,以获得尽可能好的精度。该方法的结果令人印象深刻,特别是对于CNN。CNN比DNN有明显的优势。CNN(依赖于卷积滤波器)在提取特征方面提供了很好的结果,因为它关注的是图像的预期区域,而不是感兴趣的周围区域。这导致了参数数量的显著减少和获得更高精度结果的速度。结果表明,与现有的其他方法相比,CNN具有较高的准确率,CNN的准确率为98.5%。
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引用次数: 5
Necropolitics and the Covid-19 pandemic: evictions and removals that mark the recurrent housing problem in Brazil 死亡政治和Covid-19大流行:驱逐和搬迁标志着巴西反复出现的住房问题
IF 0.8 4区 综合性期刊 Q2 Mathematics Pub Date : 2022-12-19 DOI: 10.4025/actascitechnol.v45i1.61496
Rilton Robson Lima Vernice, Beatriz Fleury e Silva
This work aims to reflect on the impacts of COVID-19, a disease responsible for the pandemic worldwide status in 2020, on urban housing policies in Brazil, which has faced structural problems since the turn of the century. These problems were accentuated and evidenced with the onset of the pandemic. The paper sought to highlight the dismantling scenario and the setbacks of human rights that are expressed in the manner in which the federal government behaves in the face of the collapse caused by the health crisis. In addition to highlighting that, the housing problem has been sewn with patches that are not effective to supply the gigantic demand for housing in the country currently, besides they do not guarantee the security of tenure to the majority of families in socioeconomic vulnerability. In this context, the focus of the discussion is on the removals and evictions that have occurred during the pandemic, putting at risk an entire population historically neglected by the neoliberal policies of capitalism. Moreover, these policies have been accentuated as a reflection of the recent democratic inflection in the country, which has strongly threatened human and social rights, legitimized by necropolitics, during the pandemic (Mbembe, 2018). The text is presented as a theoretical study carried through an exploratory methodological structure, based on a bibliographic review and documentary analysis of the subject matter. This article does not intend to bring conclusions or final answers, but to present new elements for the debate on the dismantling of Brazilian housing policies, evidenced in the current scenario through the lack of access to decent housing or difficulty in keeping it, mainly for the lowest-income populations.
这项工作旨在反思2019冠状病毒病(COVID-19)对巴西城市住房政策的影响,巴西自世纪之交以来一直面临结构性问题。随着大流行病的爆发,这些问题变得更加突出和明显。该文件试图强调在联邦政府面对健康危机造成的崩溃时所采取的行动方式所表现出的人权解体的情况和挫折。除了强调这一点外,住房问题还被缝上了一些补丁,这些补丁不能有效地满足该国目前对住房的巨大需求,此外,它们不能保证大多数处于社会经济弱势的家庭的使用权安全。在这方面,讨论的重点是在大流行病期间发生的搬迁和驱逐,使历史上被资本主义的新自由主义政策忽视的整个人口处于危险之中。此外,这些政策被强调为该国最近的民主转折的反映,这种转折在大流行期间严重威胁到被死亡政治合法化的人权和社会权利(Mbembe, 2018年)。文本呈现为通过探索性方法结构进行的理论研究,基于书目审查和文献分析的主题。本文并不打算给出结论或最后的答案,而是为关于废除巴西住房政策的辩论提出新的内容,目前的情况表明,主要是最低收入人口无法获得体面的住房或难以维持住房。
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引用次数: 0
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