bluuebunny/crossref_metadata_2025 huggingface dataset:
Uma Abordagem Baseada em DLTs para Garantia da Fixidez de Repositórios Digitais Confiáveis (RDCs)
Authors: Galiza Filipy , Costa Rostand
Published: February 2021

A integridade dos documentos arquivísticos digitais é mais um desafio da preservação digital e sua verificação é uma missão dos repositórios digitais confiáveis. Para auxiliar esses repositórios em sua missão, esse trabalho propõe o registro em blockchain de valores de hashes gerados a partir do encadeamento de inúmeros documentos em árvores de Merkle. O uso de árvores de Merkle possibilita a geração de um único valor que referencia a integridade de um grande número de documentos e o registro em blockchain garante um valor confiável de referência ao longo do tempo para prova de carimbo de tempo, prova de existência e verificação e auditoria da integridade dos acervos dos repositórios.
An IIoT Edge Environment as a Main Support to a 3D Reconstruction Virtualization Application
Authors: Badat Leya , Vidal Vinicius , Pioli Laércio , Mehaut Jean-Francois , Honorio Leonardo , Dantas Mario Antonio Ribeiro
Published: February 2021

This paper describes an experimental research work, which was conducted to gather different types of cameras and computer node, as IIoT (Industrial IoT) devices, to produce support to a digital transformation with a 3D reconstruction virtualization for a real engineering application. The computational approach considered was a heterogeneous edge computing environment. In this environment, different cameras and computer node architectures, collaborate as heterogeneous IIoT processing elements, to provide a better, and as fast as possible, images to a virtualization project. The challenge and complexity related to software packages orchestration, from these IIoT devices, are also reported.
Análise de Consumo Energético e Identificação de Ataques de Negação de Serviço em Computação em Névoa
Authors: Cruz Diogo Vinícius Martins , Pigatto Daniel Fernando , Vendramin Ana Cristina Barreiras Kochem
Published: February 2021

O constante aumento na utilização de dispositivos de Internet das Coisas (IoT), fez crescer também a preocupação com segurança. Profissionais do ecossistema de IoT devem atentar-se à possibilidade de ataques cibernéticos, dentre eles o Ataque de Negação de Serviço Distribuído (DDoS). Esta modalidade de ataque pode representar não só um pequeno atraso nas comunicações, como também a interrupção total do serviço, seja pela inundação de pacotes na rede ou pela drenagem de recursos dos equipamentos. Tratando-se de dispositivos restritos, como os de IoT, qualquer pequena elevação em seu padrão de consumo energético pode representar uma alteração significativa em seu funcionamento. Através do uso da lógica Fuzzy, este trabalho propõe inferir o grau de pertinência de um ataque DDoS em um dispositivo central da computação em névoa por meio da análise do seu padrão de consumo energético.
Avaliação de Desempenho de uma Arquitetura VANET com Semáforos Inteligentes Cooperativos
Authors: Neto Firmino , Rodrigues Laécio , Gonçalves Glauber , Soares André , Silva Francisco Airton
Published: February 2021

Tráfego inteligente de veículos pode fazer uso de semáforos inteligentes que trabalham cooperativamente para alcançar maior mobilidade de veículos. A arquitetura de semáforos inteligentes oferece desafios relacionados à restrição de tempo de comunicação e quantidade de recursos. Este trabalho tem o objetivo de avaliar o desempenho de uma arquitetura VANET de semáforos inteligentes cooperativos através de modelos de redes de Petri estocásticas (SPN). Os modelos propostos calculam o tempo médio de resposta, utilização de recursos, probabilidade e número de descartes de mensagens. O modelo é altamente flexível, permitindo aos desenvolvedores e administradores de sistemas calibrarem dezoito parâmetros, incluindo oito transições e dez marcações, representando quantidade de recursos.
Sistema de proteção contra ataques de HTTP flood usando Redes Definidas por Software
Authors: Gonçalves Diego S. M. , Couto Rodrigo S. , Rubinstein Marcelo G.
Published: February 2021

Este trabalho propõe um sistema de proteção contra ataques de HTTP ﬂood, baseado em redes deﬁnidas por software (SDN). Como esses ataques são de difícil detecção por utilizarem requisições válidas, o sistema considera todas as requisições suspeitas em um primeiro momento. Ao utilizar o redirecionamento do protocolo HTTP associado à ﬂexibilidade dessas redes, o sistema garante proteção contra esse tipo de ataque. Além disso, é proposta uma colaboração, entre sistemas autônomos da Internet, para evitar que a rede entre em colapso durante os ataques. Os resultados da avaliação de desempenho mostram uma queda no consumo de CPU do controlador SDN de 65,32% e uma queda de latência percebida pelos clientes de 6 s para 400 ms.
Modelo de Otimização de Alocação de Recursos em LoRaWAN para Aplicações de Internet das Coisas
Authors: Matni Nagib , Moraes Jean , Riker André , Oliveira Helder , Rosário Denis , Cerqueira Eduardo
Published: February 2021

O LoRaWAN é a tecnologia sem fio de longo alcance mais utilizada para aplicações de Internet das Coisas (IoT) que trabalham com alta densidade, pois é capaz de conectar dispositivos que requerem serviços de comunicação de longo alcance, baixo custo e menor consumo de energia. Contudo, a densificação do uso de LoRaWAN em serviços IoT traz uma série de desafios devido a interferência por transmissão simultânea no mesmo canal e/ou maior consumo de energia pelos dispositivos. Nesse contexto, é crucial entender os conceitos de alocação de recursos do LoRaWAN para otimizar a configuração de parâmetros específicos do rádio, ie, Fator de Espalhamento (SF) e Frequência de portadora (CF), em que a otimização dos parâmetros de transmissão via modelos de otimização é um desafio em aberto. Este artigo apresenta o MARCO, um modelo de otimização de alocação de recursos para minimizar a Qualidade de Serviço (QoS) do LoRaWAN para aplicações de IoT, além de contribuir para a melhora da eficiência enérgica dos dispositivos. O MARCO considera uma programação linear inteira mista para definir as configurações ideais dos parâmetros SF e CF, bem como especificações de trafego da rede como um todo. Resultados de simulação demonstram a eficiência em termos de taxa de extração de dados, número de colisões e consumo de energia do MARCO em comparação com as heurísticas de alocação de recursos para LoRaWAN existentes.
Planejamento de Redes Ópticas Elásticas Via Construção de Grupos de Risco: Gerenciando Falhas
Authors: Abreu João M. R. de , Assis Karcius D. R. de
Published: February 2021

Em Redes Ópticas Elásticas (Elastic Optical Networks - EON), a largura de banda de um caminho óptico é variável e a sobreposição da topologia virtual em uma topologia física deve ser projetada para otimizar a utilização do espectro. Neste artigo, é proposto uma formulação para proteção em EONs que, baseado no conceito de espremer e arrumar a largura de banda, incluindo grupos de risco compartilhado, retorna com a minimização do máximo número de slots usados em qualquer enlace físico da rede. São realizadas simulações em três diferentes redes, sendo uma didática e duas reais. Grupos de risco, diferentes fatores de compressão e formatos de modulação são considerados nas simulações.
Avaliação de Desempenho de Algoritmos de Machine Learning para Otimização de Simulações de Redes de Computadores
Authors: Quintino Joyce , Santiago Silas , Braga Reinaldo , Oliveira Mauro , Oliveira Carina
Published: February 2021

Os simuladores de redes são ferramentas computacionais capazes de auxiliar na análise e aperfeiçoamento de protocolos de comunicação em diferentes cenários antes da implantação em um ambiente real. No entanto, o tempo de execução das simulações e os recursos computacionais alocados tendem a crescer à medida que os requisitos de complexidade e precisão aumentam. Além disso, muitos processos de simulação possuem como única saída traces sem interpretação lógica. Este trabalho avalia o desempenho de algoritmos de Machine Learning na otimização de simulações de redes de computadores. Os resultados mostram que os algoritmos são capazes de fazer suposições próximas das simulações consideradas, alcançando precisões acima de 90%.
Estudo da Viabilidade da Compressão de Dados em Rádios Definidos por Software
Authors: Dayrell Paulo R. R. , Passos Diego G. , Passos Fernanda G. O.
Published: February 2021

Os Rádios Definidos por Software — ou SDR — trazem uma série de benefícios como a rápida prototipagem de novas técnicas de comunicação sem fio. Uma das questões em aberto na utilização destes equipamentos é como possibilitar a transferência, processamento e armazenamento das amostras fornecidas por um SDR. O objetivo deste trabalho é estudar a viabilidade de implementar um algoritmo de compressão de dados sem perdas na FPGA (Field Programmable Gate Array) comumente encontrada nas SDR com o objetivo de aumentar a taxa de transmissão de envio das amostras entre o rádio e o processador do hospedeiro, assim como reduzir o espaço de armazenamento. Os resultados mostram que é possível obter uma taxa de compressão de 1,55 vezes considerando a capacidade limitada de SDR existentes para computar tais algoritmos.
Avaliação de desempenho de protocolos de mensagens com arquitetura publish/subscribe no ambiente de computação em nevoeiro: um estudo sobre desempenho do MQTT, AMQP e STOMP
Authors: Bezerra Wesley Dos Reis , Westphall Carlos Becker
Published: February 2021

Soluções seguras para IoT e agronegócios são primordiais. Entretanto se faz necessária a adoção da tecnologia adequada para o desenvolvimento de sistemas nesta área. Com foco nos protocolos de mensagem pub/sub, nosso trabalho traz uma visão geral dos protocolos de mensagem AQMP, MQTT e STOMP, uma descrição de caso de uso de aplicação de segurança no agronegócio e uma experimentação para avaliação do desempenho temporal dos protocolos citados. Ao final, são discutidos os resultados e avaalido qual protocolo é o mais indicado para as situações análogas aos casos de uso citados.
O Apache ZooKeeper como Estratégia de Monitoramento Ativo para manter o Balanceamento de Réplicas no HDFS
Authors: Fazul Rhauani Weber Aita , Barcelos Patrícia Pitthan
Published: February 2021

O Apache ZooKeeper é um serviço escalável e altamente confiável para coordenação em ambientes distribuídos. Seguindo um modelo de namespace compartilhado baseado em uma árvore de znodes, o ZooKeeper apresenta-se como uma solução eficiente para o gerenciamento ativo de informações de configuração. Nesse trabalho, analisamos uma possibilidade de uso do ZooKeeper e seus znodes como uma estratégia para à manutenção do balanceamento na distribuição de dados no HDFS: um sistema de arquivos que opera com base na replicação. Através do monitoramento em tempo real do cluster, removeu-se a necessidade de execução manual do balanceador nativo do HDFS, automatizando assim a tomada de decisão no processo de balanceamento de réplicas.
Geração de Testes de Interoperabilidade e Robustez para uma Aplicação Espacial
Authors: Weller Anderson Coelho , Martins Eliane , Mattiello-Francisco Fátima
Published: February 2021

Apresentamos uma abordagem para teste de interoperabilidade e robustez de sistemas distribuídos de tempo real (DRE), baseada em busca em modelo de máquina de estado UML e no uso de propósitos de teste com o objetivo de evitar o problema de explosão do espaço de estado na geração de casos de teste. O modelo representa a interação entre dois componentes que interagem através de um canal de comunicação com defeito. Aplicamos a abordagem em um serviço de aplicativo espacial que foi usado em um estudo anterior. Os resultados mostram que a abordagem é tão útil quanto a anterior para cobrir os objetivos do teste, mas com o diferencial do ambiente defeituoso ser modelado e ao uso de técnica de geração de casos de teste baseada em busca.
Das Videoprotokoll als Perspektive für den deutschen Strafprozess?
Authors: Lüske Lena
Published: February 2021

For the first time, the work deals extensively with the question of the introduction of an audiovisual documentation of the criminal trial. To this end, the work first provides a comprehensive overview of legal systems that already make profitable use of audiovisual documentation. On the basis of these results, possible advantages and disadvantages of a video transcript are then analysed, with the focus on its use in the appeal proceedings. The study comes to the conclusion that the introduction of a video transcript strengthens the search for truth in criminal proceedings and that there are no objections to it.
Hermann Kant
Authors: Furneri Valerio
Published: February 2021

The proximity to the power apparatus has cast dark shadows on the literary work of Hermann Kant, who is regarded as one of the most read authors of the GDR. Valerio Furneri embeds Kant's life and work in the all-German context of the 20th century and reinterprets his classics such as Die Aula or Der Aufenthalt. The author does not pursue the claim to rehabilitate the GDR, nor to trivialise Kant's role in it. Instead, the attempt is made to look at Kant's entire work from a temporal distance and to re-evaluate it. Through his works, Kant was able to accompany and depict not only the German-German history, but also European history.
Die Stellung des Anteilseigners im Rahmen der vorinsolvenzlichen Restrukturierung
Authors: Schoch Diana P.
Published: February 2021

In times of crisis, shareholders are often requested to participate in the pre-insolvency restructuring process, which they are not always willing or able to do. In these cases, numerous controversial questions arise about the possibility and depth of interference with the rights of shareholders. While German legislation so far has made no provision whatsoever for pre-insolvency restructuring of companies, a European directive now obliges them to act. Whether, and to what extent, a pre-insolvency restructuring regime should also include the rights of shareholders is examined in this volume, after providing an analysis of the legal situation in Germany to date.
Association Between Serum Ferritin Level and Gene Mutations in Patients with Thalassemia Major and Intermediate
Authors: Anafje Mohsen , Jaseb Kaveh , Yousefi Homayon
Published: February 2021

Background: Beta-thalassemia is one of the most important health problems worldwide. Identifying common mutations as well as the relationship between serum ferritin level and gene mutations in patients with intermediate and major thalassemia can be helpful in preventive programs. Objectives: The purpose of this study was to assess the association between serum ferritin level and gene mutations in patients with intermediate and major thalassemia. Methods: This descriptive cross-sectional study was done using patients' medical records available in the hospital archives, and data of 132 patients with mutated genes referred to Ahvaz Shafa hospital from 2012-2017 were evaluated. In addition to determining the frequency of different gene mutations, the relationship between different gene mutations and serum ferritin levels, as well as hemoglobin levels before the first blood transfusion and the age of the patients (month) before the first blood transfusion, were investigated. Results: There was no significant relationship between mutated genes and serum ferritin levels (P = 0.2). There was a significant difference between the types of gene mutations and the levels of hemoglobin before the first blood transfusion (P = 0.01). There was no significant difference between the types of gene mutations and the age of the patients before the first blood transfusion (P = 0.4). Conclusions: There was no association between the types of mutations and serum ferritin levels as an indicator of disease severity. Patients with hemoglobin levels of 6 to 7 mg/dl were found with a higher likelihood of receiving a blood transfusion, with a higher percentage having the IVSII-I gene mutation, but given that many mutations were random and we just had one or two patients with these mutations, it cannot be used as an indicator for disease severity. We need to conduct studies with a larger sample size to be used as an indicator for disease severity. Since the influence of the other accompanying genes and polymorphism plays an important role in the clinical manifestations of genetic diseases, it can be the reason for some negative results.
Effects of Tarragon Powder on Glucose Metabolic Changes, Lipid Profile and Antioxidant Enzyme Levels in Type 2 Patients with Diabetes: A Randomized, Double-Blind, Placebo-Controlled, Clinical Trial
Authors: Khadem Haghighian Hossein , Shiran Mohammadreza , Akha Ozra , Ghafouri Zahra , Ghaedi Ehsan , Bayat Sara , Mazloomi Mohammad Ali , Houshmand Gholamreza
Published: February 2021

Background: The antioxidant and anti-inflammatory properties of tarragon make it known as an antidiabetic plant. Diabetes mellitus, an endocrine, metabolic disease, is a leading global health emergency and associated with serious complications. Objectives: This study aimed to assess the effects of tarragon powder supplementation on glucose metabolism, lipid profile, and antioxidant status in the diabetic population. Methods: Patient screening and selection for this clinical trial lasted one month. Tarragon supplement consumption by patients lasted 2 months (8 weeks); meanwhile, they were followed up. Sixty male and female patients with type 2 diabetes were randomly assigned to the tarragon receiver group (n = 30) and placebo receiver group (n = 30). The intervention group received a tarragon capsule (500 mg) 3 times a day, and the control group received placebo capsules. Fasting blood glucose (FBG), two-hour postprandial glucose (2-hpp), glycated hemoglobin (HbA1c), insulin, lipid, and antioxidant profile were evaluated at the start and the end of the research. Results: In the tarragon receiver group, FBG, 2-hpp, HbA1c%, insulin resistance, lipid, and antioxidant profile significantly improved, compared to the placebo group, after adjuvant therapy with tarragon (P < 0.05). Conclusions: Supplementation with tarragon powder in type II patients with diabetes for 2 months exerts a beneficial effect on improving the glycemic profile, lipid profile, and antioxidant status.
Extraction and Isolation of Antioxidant-Antibacterial Compounds From Lactobacillus casei Strain K1C by Thin-Layer Chromatography
Authors: Pourramezan Zahra , Oloomi Mana , Kasra Kermanshahi Rouha , Rezadoost Hassan
Published: February 2021

Background: Nowadays, searching for natural bioactive compounds with potential use in food industries is a major issue. Because of simple purification, natural compounds from microbial sources attract more attention. These encompass antioxidant and antibacterial materials derived from probiotics. Methods: In this study, Lactobacillus strains were isolated from kefir specimens. The antioxidant and antibacterial activity of the methanol extract of the supernatants was determined using 2, 2-diphenyl-picyril hydrazil (DPPH) and minimum inhibitory concentration (MIC) methods, respectively. In order to increase the antioxidant properties, a minimum medium fermented aerobically was used. Results: Antibacterial activity of Lactobacillus supernatant increased against E. coli ATCC 11303 in case of minimum medium (25.32 mg/mL) compared to MRS broth (32 mg/mL); however, aerobic condition decreased antibacterial production (65.44 mg/mL). After fractionation by thin-layer chromatography (TLC), this value reached the highest level (500 µg/mL). Production analysis at different times showed that maximum antibacterial activity was obtained in the middle of the logarithmic growth phase until the beginning of the stationary growth phase. The antioxidant traits increased significantly in minimum culture media and anaerobic condition (492.1 ± 0.25 µg/mL) compared to the similar condition in MRS broth (880.96 ± 0.05 µg/mL). The highest antioxidant production was observed in the stationary growth phase of the aerobically fermented minimum medium (266.82 ± 0.17 µg/mL). Conclusions: The findings of this study showed that the best antibacterial and antioxidant-producing isolate, L. casei strain K1C (accession no.: KU954559), could be useful as a natural preservative in food industries.
Effects of Cerebellar Transcranial Direct Current Stimulation (tDCS) on Timed Up and Go Test with Foot Placement in Chronic Stroke Patients
Authors: Mohammadi Roghayeh , Mahmoudi Zeinab , Mahmoodian Nahid
Published: February 2021

Objectives: The purpose of this study was to assess the effect of a single session of cerebellar anodal cerebellar transcranial direct current stimulation (tDCS) on timed up and go test (TUG) with foot placement in patients with chronic stroke. Methods: Twenty patients with chronic stroke participated in this clinical trial. TUG test was carried out with four different foot positions, 1- spontaneous foot positions (SP), 2- symmetrical foot positions (SYP), 3- asymmetrical foot positions (PBNP), paretic foot behind the non-paretic foot, and 4- asymmetrical foot positions (NPBP), nonparetic foot behind the paretic foot, before and after using tDCS. Anodal tDCS (1.5 mA) was applied over the cerebellum for 20 minutes. Results: The time of the TUG test was significantly different after using tDCS at all foot positions: SP (P = 0.012), SYP (P = 0.010), PBNP (P = 0.047), and NPBP (P = 0.037). Conclusions: It seems that cerebellar tDCS can be a useful method in improving functional balance in chronic stroke patients.
Pandora's Dreams
Authors: Beaumont Peter ,   After Dinner Conversation
Published: February 2021

Should we be held accountable for what we imagine, but choose not to actually do? Does wrong thought always lead to wrong action? In this work of philosophical short story fiction, scientists have discovered a way to record dreams and make them available for playback. This quickly gives rise to the bootleg sale of horrible and wonderful dreams to a general public interested in ever-more spectacle. It also creates a market for buying and watching the dreams of celebrities. Finally, it brings about the government subpoenaing dreams to use as evidence in trials and, later, in helping it discover crimes that have not, but might, happen in the future.
Perfusion and Diffusion Variables Predict Early Neurological Deterioration in Minor Stroke and Large Vessel Occlusion
Authors: Gwak Dong-Seok , Kwon Jung-A , Shim Dong-Hyun , Kim Yong-Won , Hwang Yang-Ha
Published: February 2021

Background and Purpose Patients with acute large vessel occlusion (LVO) presenting with mild stroke symptoms are at risk of early neurological deterioration (END). This study aimed to identify the optimal imaging variables for predicting END in this population.Methods We retrospectively analyzed 94 patients from the prospectively maintained institutional stroke registry admitted between January 2011 and May 2019, presenting within 24 hours after onset, with a baseline National Institutes of Health Stroke Scale score ≤5 and anterior circulation LVO. Patients who underwent endovascular therapy before END were excluded. Volumes of Tmax delay (at >2, >4, >6, >8, and >10 seconds), mismatch (Tmax >4 seconds – diffusion-weighted imaging [DWI] and Tmax >6 seconds – DWI), and mild hypoperfusion lesions (Tmax 2–6 and 4–6 seconds) were measured. The association of each variable with END was examined using receiver operating characteristic curves. The variables with best predictive performance were dichotomized at the cutoff point maximizing Youden’s index and subsequently analyzed using multivariable logistic regression.Results END occurred in 39.4% of the participants. The optimal variables were identified as Tmax >6 seconds, Tmax >6 seconds – DWI, and Tmax 4–6 seconds with cut-off points of 53.73, 32.77, and 55.20 mL, respectively. These variables were independently associated with END (adjusted odds ratio [aOR], 12.78 [95% confidence interval (CI), 3.36 to 48.65]; aOR, 5.73 [95% CI, 2.04 to 16.08]; and aOR, 9.13 [95% CI, 2.76 to 30.17], respectively).Conclusions Tmax >6 seconds, Tmax >6 seconds – DWI, and Tmax 4–6 seconds could identify patients at high risk of END following minor stroke due to LVO.
Delayed Lesions on Diffusion-Weighted Imaging in Initially Lesion-Negative Stroke Patients
Authors: Kim Kitae , Kim Beom Joon , Huh Jaewon , Yang Seong Kyu , Yang Mi Hwa , Han Moon-Ku , Jung Cheolkyu , Choi Byung Se , Kim Jae Hyoung , Bae Hee-Joon
Published: February 2021

Background and Purpose Lesions on diffusion-weighted imaging (DWI) occasionally appear on follow-up magnetic resonance imaging (MRI) among initially DWI-negative but clinically suspicious stroke patients. We established the prevalence of positive conversion in DWI-negative stroke and determined the clinical factors associated with it.Methods This retrospective, observational, single-center study included 5,271 patients hospitalized due to stroke/transient ischemic attack (TIA) in a single university hospital during 2010 to 2017. Patients without initial DWI lesions underwent follow-up DWI imaging as a routine practice. Adjusted hazard ratios (aHRs) for recurrent stroke risk according to positive conversion were determined using Cox proportional hazard regression. Adjusted odds ratios (aORs) and 95% confidence intervals (CIs) for positive conversion among initially DWI-negative patients were estimated.Results In total, 694 (13.2%) patients (mean±standard deviation age, 62.9±13.7 years; male, 404 [58.2%]) were initially DWI-negative. Among them, 22.5% had positive-conversion on follow-up DWI. Positive conversion was associated with a higher risk of recurrent stroke (aHR, 3.12; 95% CI, 1.56 to 6.26). Early neurologic deterioration (aOR, 15.1; 95% CI, 5.71 to 47.66), atrial fibrillation (aOR, 6.17; 95% CI, 3.23 to 12.01), smoking (aOR, 3.76; 95% CI, 2.19 to 6.63), pre-stroke dependency (aOR, 1.62; 95% CI, 1.15 to 2.27), objective hemiparesis (aOR, 4.39; 95% CI, 1.90 to 10.32), longer symptom duration (aOR, 2.17; 95% CI, 1.57 to 3.08), high cholesterol (aOR, 4.70; 95% CI, 1.78 to 12.77), National Institutes of Health Stroke Scale score (aOR, 1.44; 95% CI, 1.08 to 1.91), and high systolic blood pressure (aOR, 1.01; 95% CI, 1.00 to 1.02) were associated with a higher incidence of lesions with delayed appearance. Regarding the location of lesions on follow-up DWI, 34.6% and 21.2% were in the cortex and brainstem, respectively.Conclusions In DWI-negative stroke/TIA, positive conversion is associated with a higher risk of recurrent stroke. DWI-negative stroke with factors related to positive conversion may require follow-up MRI for a definitive diagnosis.
General Anesthesia versus Conscious Sedation in Mechanical Thrombectomy
Authors: Feil Katharina , Herzberg Moriz , Dorn Franziska , Tiedt Steffen , Küpper Clemens , Thunstedt Dennis C. , Hinske Ludwig C. , Mühlbauer Konstanze , Goss Sebastian , Liebig Thomas , Dieterich Marianne , Bayer Andreas , Kellert Lars ,   on Behalf of the GSR Investigators
Published: February 2021

Background and Purpose Anesthesia regimen in patients undergoing mechanical thrombectomy (MT) is still an unresolved issue.Methods We compared the effect of anesthesia regimen using data from the German Stroke Registry-Endovascular Treatment (GSR-ET) between June 2015 and December 2019. Degree of disability was rated by the modified Rankin Scale (mRS), and good outcome was defined as mRS 0–2. Successful reperfusion was assumed when the modified thrombolysis in cerebral infarction scale was 2b–3.Results Out of 6,635 patients, 67.1% (n=4,453) patients underwent general anesthesia (GA), 24.9% (n=1,650) conscious sedation (CS), and 3.3% (n=219) conversion from CS to GA. Rate of successful reperfusion was similar across all three groups (83.0% vs. 84.2% vs. 82.6%, P=0.149). Compared to the CA-group, the GA-group had a delay from admission to groin (71.0 minutes vs. 61.0 minutes, P<0.001), but a comparable interval from groin to flow restoration (41.0 minutes vs. 39.0 minutes). The CS-group had the lowest rate of periprocedural complications (15.0% vs. 21.0% vs. 28.3%, P<0.001). The CS-group was more likely to have a good outcome at follow-up (42.1% vs. 34.2% vs. 33.5%, P<0.001) and a lower mortality rate (23.4% vs. 34.2% vs. 26.0%, P<0.001). In multivariable analysis, GA was associated with reduced achievement of good functional outcome (odds ratio [OR], 0.82; 95% confidence interval [CI], 0.71 to 0.94; P=0.004) and increased mortality (OR, 1.42; 95% CI, 1.23 to 1.64; P<0.001). Subgroup analysis for anterior circulation strokes (n=5,808) showed comparable results.Conclusions We provide further evidence that CS during MT has advantages over GA in terms of complications, time intervals, and functional outcome.
Effect of the ember element in increasing the efficiency of liquefied petroleum gas stoves
Authors: Sudarno Sudarno , Soeparman Sudjito , Wahyudi Slamet , Widodo Agung
Published: February 2021

The purpose of this study was to determine the effect of use ember element from woven nickel wire to increasing the efficiency of the LPG stoves. It is supposed that high-temperature embers can burn more fuel around the wire, thereby increasing the area of complete combustion. The test was conducted by means of a Water Boiling Test (WBT) and the number of ember layers varied from one to four. It was found that the use of elements of fire without reflectors could increase efficiency by 8.32%, with the highest efficiency being with the use of a single layer ember element of the fire, of 61.71%. However, the use of elements of fire in the finned heat reflectors causes efficiency to decrease, as the pattern to put elements of fire interfere with the reflectivity. This means the heat reflection is blocked by the pattern and trapped between the reflector and pattern elements. As a result, the heat energy from the reflector reflection cannot be forwarded to the combustion zone. The test results also show that the temperature distribution from ember element use can increase the area of complete combustion.
Development of equipment management system with monitoring of working characteristics of technological processes
Authors: Belousova Maria , Aleshko Roman , Zakieva Rafina , Karabasheva Malvina , Gorovoy Sergey , Kozhemov Sultanbek
Published: February 2021

The work provides multi-purpose optimization of the baklava production process based on technology of agent systems, the intelligent environment of process control systems. The general architecture of the control system intelligent environment with agent technologies for recognizing abnormal situations was developed and adaptive baklava production regulators were synthesized. It allows you to get the specified dynamic characteristics of the control object based on the developed adaptive systems for adjusting the PID controllers, controlling the parameters of the dough, kneading, separation and baking of baklava. The proposed approach to the construction of an automated process control system with an intelligent environment will reduce the variance of fluctuations in energy consumption, increase the production rate of high-quality baklava and reduce the time for re-equipment and technological modes of operation of baklava production lines.
Acerca de la interpretación de Langrebe sobre cartesianismo de Husserl
Authors: Perkins Patricio A.
Published: February 2021

Critico la teoría hermenéutica de Landgrebe sobre el cartesianismo de Husserl mostrando la estructura argumentativa en la que se inserta, lo que pretende y lo que está forzada a pretender. Su núcleo duro radica en los conceptos de crítica inmanente y lógica interna y tiene como meta final promover una idea de trascendental no-entitativa voluntarista y correlacional opuesta a la de un yo absoluto. Para probar esto, analizo tres niveles del cartesianismo de Landgrebe: primero, la síntesis contradictoria entre apodicticidad y experiencia; segundo, su interpretación de Filosofía Primera, y, tercero, el objetivismo de Husserl. Concluyo de la función que juega el cartesianismo en este esquema y del fracaso de documentar con ejemplos la idea que el concepto no describe una noción en la filosofía de Husserl, sino que es una herramienta hermenéutica para controlar el sentido de trascendental en esta filosofía.I criticize Landgrebe’s hermeneutical theory about Husserl’s Cartesianism describing the structure of the argument where this concept is rooted, what it claims and what it is forced to claim. The theory’s hard core is based on the concepts of immanent critique and internal logic and it’s final goal consists in advancing a non-entitative voluntaristic and correlational definition of transcendental opposite to that of an absolute I. To prove this, I analyze three levels inside Landgrebe’s concept of Cartesianism: first, the contradictory synthesis of experience and apodicticity; second, his interpretation of First Philosophy, and, third, Husserl’s objectivism. I conclude from the goal that Cartesianism plays in this argument and the failure in documenting this idea with examples that Landgrebe’s Cartesianism is rather an hermeneutical tool made to control the definition of transcendental in Husserl’s philosophy than a concept describing Husserl’s thought.
El sentir, otro modo de racionalidad Comentario a María del Carmen LÓPEZ, Dos filosofías del sentir: M. Merleau-Ponty y M. Zambrano, Madrid, Editorial Academia Española, 2013, 225 pp
Authors: Quesada Balbino Antonio
Published: February 2021

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La fenomenología de la razón y la experiencia estética. Edmund Husserl y Vasily SesemanNN
Authors: Yonkus Dalius
Published: February 2021

La estética fenomenológica debería ser capaz de revelar cómo la estructura de cualquier objeto estético dado está conectada con la experiencia de ese objeto, así como demostrar las condiciones necesarias para la propia experiencia estética. Para hacerlo, hay que argumentar en contra de los supuestos unilaterales, como por ejemplo la suposición del objetivismo estético que postula la belleza como rasgo exclusivo de la realidad independiente del sujeto; o la creencia opuesta, que la belleza es esencial y únicamente la proyección del gusto subjetivo sobre las cosas en el mundo. Sesemann analiza el objeto estético y el acto estético, enfatizando su conexión. Esta conexión se refiere a lo que se describe en la fenomenología de Husserl como la correlación entre el objeto intencional y el acto intencional. Esta conexión puede ser descubierta sólo mediante el método fenomenológico: realizando la reducción fenomenológica. En este documento se explicará en primer lugar la percepción estética en la estética de Sesemann. Más adelante, se examina la concepción de la estructura del objeto estético en el contexto de la estética de Sesemann: la composición de los elementos, las sensaciones en relación con el significado, etc. Por último, el artículo sugiere que la estética de Sesemann se basa fundamentalmente en el método de la reducción fenomenológica.Phenomenological aesthetics should also be able to show how the structure of any given aesthetic object is connected with the experience of that object, as well as to demonstrate the necessary conditions for the aesthetic experience itself. In order to do so, one must argue against one-sided assumptions, such as the aesthetic objectivism’s supposition that beauty is exclusively the trait of reality not at all dependent on the subject’s experience of it; or its opposite belief that beauty is essentially and solely the projection of the subjective taste onto the things in the world. Sesemann analizes the aesthetic object and aesthetic act by emphasizing their connection. This connection relates to what is described in Husserls phenomenology as the correlation between the intentional object and the intentional act. This connection can be discovered only by using the phenomenological method: by doing phenomenological reduction. This paper will first explain the aesthetic perception in Sesemann‘s aesthetics. Later, it examine the conception of the aesthetic object‘s structure in Sesemann‘s aesthetic: composition of elements, sensations in connection with meaning; etc. Finally, the paper will argue that Sesemann‘s aesthetics is essentially based on the method of phenomenological reduction.
construction of identity through the fashion portfolio: an international experience of field research
Authors: Franzo Paolo
Published: February 2021

The paper presents the results of a field research carried out in three international fashion schools - Polytechnic University of Milan (Italy), Iuav University of Venice (Italy) and Escola d’Art i Superior de Disseny of Alcoi (Spain) - to investigate the fashion portfolio as a tool to build the identity of its author. In the fashion system, the portfolio is an essential tool, required at every application, presented at every interview, and it is often the only element available to the evaluators for selection among different subjects. However, the theoretical reflection developed in academic research around the portfolio is still very limited and this contribution aims to fill at least part of the gap. A workshop has been designed and carried out, which the paper describes and analyses in its different phases, with the aim of simulating a part of the process of portfolio realisation and carrying out an exploratory investigation, documenting the students' considerations, their perception of this tool, the problems encountered, the methods of realisation, the influence of the context and the relationship with the author's identity.
A moda como dispositivo da memória no espaço museológico
Authors: Ferreira Diêgo Jorge Lobato , Almeida Cunha Arantes Priscila
Published: February 2021

O presente artigo tem por objetivo estabelecer relações entre moda, memória e museu, tendo em vista a compreensão do fenômeno da moda que sai do lugar comum e adentra os espaços museológicos. Assim, dedicamo-nos, também a examinar como a moda e o museu, enquanto campos de produção cultural, se estruturam. O referencial teórico compreende os seguintes autores: Le Goof (2013), Nora (1993), Crane (2008), Lipovetsky (2009), Sant'Anna (2010), Norogrando (2015), Andrade (2008). Este trabalho foi desenvolvido a partir do resultado de pesquisa exploratória adotando as seguintes etapas metodológicas: revisão de literatura, pesquisa documental e estudos de caso que pautaram as análises e sínteses apresentadas.
Oral Hypomethylating Agents for Myelodysplastic Syndromes: Highlights From SOHO 2020
Authors: Price, MPAS, PA-C Allyson
Published: February 2021

Allyson Price, MPAS, PA-C, of The University of Texas MD Anderson Cancer Center, highlights implications for advanced practitioners from the presentation at the 2020 SOHO Annual Meeting by Guillermo Garcia-Manero, MD, also from MD Anderson Cancer Center, on the development of oral hypomethylating agents for myelodysplastic syndromes.
Integrating Novel Agents in Relapsed or Refractory Hodgkin Lymphoma: Highlights From SOHO 2020
Authors: Valla, PharmD, BCOP Kelly
Published: February 2021

At the 2020 SOHO Annual Meeting, Alex F. Herrera, MD, of City of Hope, discussed the integration of novel agents into the management of patients with relapsed or refractory Hodgkin lymphoma. Kelly Valla, PharmD, BCOP, of Winship Cancer Institute of Emory University, discusses insights from this session for advanced practitioners.
La presencia de marca en los contenidos de belleza de YouTube dirigidos al público sénior femenino
Authors: Castelló-Martínez Araceli , Barrilero-Carpio Cecilia
Published: February 2021

El YouTuber es un influencer digital que se presenta como una persona corriente, con la capacidad de crear opinión gracias a que sus valoraciones despiertan la confianza entre los consumidores. De ahí su atractivo para las marcas, que buscan integrar sus mensajes con intereses comerciales, en muchas ocasiones no identificados como tales, entre los contenidos de elaboración propia difundidos por los YouTubers. Este estudio pone el foco en la presencia de las marcas en los contenidos de temática belleza de canales de YouTubers sénior dirigidos al público femenino, con los objetivos de analizar la presencia de productos y marcas, identificar el carácter publicitario, estudiar las características estilísticas y del discurso y revisar la audiencia e interacción. Las tres variables identificadas –presencia de productos y marcas y carácter publicitario, características estilísticas y del discurso y audiencia e interacción– se estudian a partir de 18 indicadores en los 196 vídeos publicados en 2019 en los dos canales de belleza de YouTubers sénior con más seguidores: MakeUpMasDe40 y Mar Gallardo. Los resultados demuestran la omnipresencia de marcas en el discurso de las YouTubers sénior especializadas en belleza, especialmente a través del formato tutorial y con una presencia multidimensional –verbal, visual y en el título–, pese a que en la mayoría de casos analizados no se incluye el aviso de contenido comercial. La cosmética del color despierta gran interés entre las seguidoras de estos canales, en los que las marcas del sector belleza muestran sus productos para llegar al público conocido como las viejenials.
De la participación ciudadana a la escucha social, una perspectiva de los medios públicos de proximidad en Europa
Authors: Ojea Fernando R.
Published: February 2021

Artículo de Tribuna: investigación y profesión
Reseña del libro Histoire sociale de la télévision en Espagne
Authors: Marzal Felici Javier
Published: February 2021

Reseña:

Histoire sociale de la télévision en Espagne.Palacio, Manuel (2019).Lyon: GRIMH, Collection Zoom.
Medios de comunicación públicos y participación
Authors: Campos Freire Francisco , Loriguillo-López Antonio
Published: February 2021

Presentación de la sección informe del número 21.
Audience participation in public service media. From an instrumental to a purposeful vision
Authors: Vanhaeght Anne-Sofie , Donders Karen
Published: February 2021

Audience participation has become a buzzword in Public Service Media policies, strategies and debates. Different types of audience involvement—for example, adding social media to programs or media co-creation projects with young people—have been linked to the achievement of societal objectives such as increasing the diversity of media content. Yet, audience participation has failed to live up to its promises in the practice of public broadcasters. This article addresses the challenges of the implementation of audience participation in a Public Service Media context, especially in the phase of content creation. We critically question the underlying assumption in Public Service Media scholarship and media theories that more audience participation is automatically better for the achievement of societal objectives. Insights from political theory on participatory and deliberative models of democracy are adopted to move from an instrumental to a more purposeful vision on audience participation in Public Service Media.
Współczesne podejścia do uczestnictwa społeczności lokalnej w planowaniu przestrzeni w literaturze naukowej = A review of the scientific literature on contemporary approaches to local community participation in spatial planning
Authors: Bednarek-Szczepańska Maria
Published: February 2021

The paper is the result of a review of contemporary scientific literature on local-community participation in spatial planning. The aim of the review has been to determine those concepts which constitute the theoretical basis for studies, the areas in which the participation of a local community in planning is being examined, and the methods of involving inhabitants gaining most frequent description in the literature. The review included 96 relevant scientific articles from 2010‑2019 that are available in the Web of Science database. In practice, this literature is found to feature marked diversity when it comes to the ways in which community participation in planning is embedded theoretically. While the underpinning concepts derive mainly from the socio-political sciences, management, ecology or human geography are also represented, and reference is often made to the concept of deliberation and collaboration, as connected with the theory of communicative action. Note should also be taken of the importance of knowledge (especially lay knowledge) and learning as relatively new key concepts in the literature regarding social aspects of spatial planning. The said literature focuses on the search for new ways in which residents can be activated as regards planning, as well as ways in which they can be tested. There is therefore a prevalence of works that detail innovative initiatives by which inhabitants’ views on the space in which they function can be gained. Little attention is paid to translating the opinion and knowledge obtained from the community into planning decisions – this being an issue that researchers either ignore or treat very vaguely. This is then a significant gap in the output under analysis. The analysed works present local-community involvement in planning, mainly in urbanised areas, but also in valuable natural areas, including forests, wetlands, rivers, etc. Relatively little attention is paid to social participation in the planning of villages and small towns outside large agglomerations. It is surprising that there is very little work on grassroots community initiatives aimed at the local-level planning of space. The use of modern technologies in gauging society’s opinions and knowledge on space is what proves dominant where methodological scope is concerned. There is wide discussion of the possibilities and advantages inherent in methodology based on PPGIS and VGI.
La contribution des administrateurs à la fabrique d’une gouvernance démocratique et stratégique dans les coopératives agricoles, le cas Limagrain
Authors: Valiorgue Bertrand , Hollandts Xavier
Published: February 2021

A partir d’une observation participante de quatre années au sein de la coopérative Limagrain, cet article met en évidence les pratiques de gouvernance mises en oeuvre par les administrateurs pour relever les trois difficultés principales auxquelles les coopératives agricoles sont généralement confrontées : le maintien de l’implication des adhérents, la formulation d’un projet stratégique et le contrôle de l’action des dirigeants. Nos résultats détaillent l’action des administrateurs à l’intérieur et à l’extérieur des organes de gouvernance. Nous apportons également des éclairages théoriques originaux au sein du courant governance as practice dans un contexte de gouvernance démocratique.
L’évaluation des établissements académiques de Paris à Manama : entre convergences méthodologiques et divergences culturelles
Authors: Mouillot Philippe , Bartel-Radic Anne
Published: February 2021

Depuis une vingtaine d’années, dans un contexte de normalisation face à une concurrence internationale croissante, les établissements académiques sont soumis à des évaluations. Cet article questionne le rôle de la culture dans les différentes phases de ce processus académique institutionnel. Notre recherche participante dans quatre cas d’évaluations académiques au Royaume de Bahreïn (Péninsule Arabique) et en France (Europe) montre que les processus d’évaluation sont similaires au niveau formel. Or, les cultures nationales jouent un rôle primordial dans la réception et les retombées de cette évaluation. En conséquence, dans ces deux pays, ses résultats s’expriment de manière très différenciée.
L’embarras des autorités suisses face aux rassemblements d’extrême droite
Authors: Thomas Matthieu
Published: February 2021

Le 15 octobre 2016, Unterwasser, petit village du canton de Saint-Gall, accueille un concert de RAC (Rock Against Communism) qui réunit plus de 5.000 personnes. Signalé à l’attention publique par les médias généralistes, le rassemblement devient un événement national suscitant de nombreuses réactions d’indignation et d’interrogation. Cet article retrace la publicisation de ce « concert néonazi » et ses conséquences pour la collectivité politique suisse. Il s’intéresse au processus par lequel un rassemblement d’extrême droite se mue en problème public et montre les difficultés politico-juridiques qui en découlent pour les autorités cantonales et fédérales, interpelées pour agir face à ce « genre » d’événements. L’étude de ce « concert néonazi » met en exergue une tension constitutive des démocraties libérales : le dilemme que constitue la nécessaire articulation dans un État de droit entre libertés fondamentales et sécurité publique.