bluuebunny/crossref_metadata_2025 huggingface dataset:
mHealth: Privacidade e Fatores Humanos
Authors: N. Silva Wagner
Published: October 2019

Garantir a privacidade das informações no ambiente mhealth é considerado um desafio para sua adesão e uso, sendo tratada em muitas pesquisas da área sob o viés da segurança da informação, com a proposição de métodos e técnicas que impedem o acesso não autorizado às informações. Esta pesquisa traz uma abordagem diferente de privacidade: a que diz respeito aos desejos e preferências dos usuários da tecnologia no compartilhamento de suas informações de saúde. Mobile mhelath, além de permitir a coleta de dados por longos períodos de tempo e acesso a uma gama mais ampla de informações relacionadas, diretamente ou não, com a saúde do paciente, essas tecnologias permitem compartilhar informações de saúde com diversas partes envolvidas no cuidado, como profissionais de saúde, cuidadores, familiares etc. Esses fatores fazem com que os desejos e preferências de privacidade dos usuários sejam dinâmicos, alterando-se baseados em diversos contextos. Esses contextos dinâmicos (ponto focal nesta pesquisa) não são diretamente tratados em pesquisas sobre o assunto, tornando a questão da privacidade um dos fatores de impacto na aceitação e uso da tecnologia.
Projeto Encontre-me! TICs para a Divulgação e Busca de Pessoas Desaparecidas de Maneira Colaborativa
Authors: Classe Tadeu , Leonel Gildo , Dos Reis Costa Iran , Dore Matheus , Braz Samuel , Campos Camila , Falcão Camillo , Martins Daves , Correa Miriã
Published: October 2019

Nas grandes cidades do Brasil e do Mundo o desaparecimento de pessoas é uma realidade que pode atingir qualquer família, independente da classe social. Contudo, o serviço de busca de pessoas desaparecidas, embora muito importante, é pouco conhecido pela sociedade e não é divulgado de forma precisa. As pessoas, devido ao crescimento das mídias sociais, realizam divulgação dos desaparecidos nestes veículos na esperança de obter informações sobre o paradeiro de seu ente querido. Neste contexto, este trabalho apresenta o desenho de pesquisa do projeto Encontre-me!, usando Design Science Research Methodology como metodologia. Este projeto objetiva desenvolver e disponibilizar TICs e serviços para inclusão busca e divulgação de pessoas desaparecidos, fazendo com que as pessoas possam colaborar na busca por informações, além de conhecer melhor este serviço tão importante.
The cooperative dynamics of Brazilian Oil and Gas Innovations Systems A Research Proposal
Authors: Gama Carlos Alexandre Ferreira , Vivacqua Adriana S
Published: October 2019

A legislação brasileira para o setor de petróleo e gás prevê o investimento obrigatório em P&D para empresas exploradoras de petróleo e gás. A chamada Lei do Petróleo levou ao estabelecimento de um Sistema de Inovação entre Universidades, Governo e Indústria (UGI), no qual as relações entre pesquisadores da indústria e professores universitários são o coração deste sistema. Nessa perspectiva, a modelagem da dinâmica social entre pesquisadores e professores pode ser considerada uma contribuição relevante para a compreensão da dinâmica complexa deste Sistema de Inovação. Este artigo apresenta uma proposta de pesquisa para analisar e simular a dinâmica de cooperação entre pesquisadores e professores por meio da ótica de Sistemas Adaptativos Complexos, a fim de compreender e mensurar os possíveis efeitos da política de investimentos adotada pelo governo brasileiro.
Social network analysis in a software crowdsourcing perspective
Authors: S. Machado Leticia , M. Melo Ricardo Rodrigo , R. B. de Souza Cleidson
Published: October 2019

Social network analysis (SNA) has been an important research tool in the Software Engineering community in the last years. The goal of this work is to bring together researcher and practitioners who have studied SNA from software crowdsourcing (SW CS) perspective, and to refine our ways of thinking about issues on communication and collaboration in SW CS projects.
iStarDT: Um Método para Construção de Modelos i* Utilizando Design Thinking
Authors: Santos Laino , Silva Carla
Published: October 2019

A Engenharia de Requisitos possui métodos eficazes para buscar, representar, validar e gerenciar os objetivos que os stakeholders buscam num software demandado, como por exemplo o framework orientado a objetivos i*. Este trabalho dá continuidade aos esforços recentes de outros autores em unir criatividade e i*. Nesta abordagem, é definido um método para a construção colaborativa de modelos i*, a partir da aplicação do Design Thinking (DT). Holisticamente, o método está baseado nos estágios de inspiração, ideação e implementação do DT. Nós usamos o método científico pesquisa-ação, de modo que o arcabouço teórico, aliado às ações e interações sociais, possibilitaram fundamentar e testar formas eficazes de construir modelos i*, a partir da aplicação do DT.
Fake News and Sarcasm, what is the limit of a critic and what is intentionally fake?
Authors: Cardoso Durier da Silva Fernando , Bicharra Garcia Ana Cristina
Published: October 2019

Nowadays it is hard to distinguish what is a fake information made to mislead, cause havoc and hysteria than a true critic that has only the intention to highlight a social problem or an abnormality of some sort. In order to diminish the number of false positives in fake news detection, we experimented two neural network models trained by a combined set of true, fake and sarcastic news in order to test how accurate would be our model. This paper has the goal to propose future steps of an ongoing experiment and discuss the usage of collaboration aided by machines to gather such data to the models.
Classificação de opinião no Twitter em português utilizando o Multilingual Universal Sentence Encoder para apoiar pesquisas sobre filter bubble
Authors: Castro dos Santos Jônatas , Wolfgand Matsui Siqueira Sean
Published: October 2019

Pesquisas sobre filter bubbles necessitam de mecanismos para capturar e classificar a polaridade de opinião de documentos em ambientes crowdsourced. Apresentamos um modelo preliminar baseado em aprendizado de máquina para classificar a opinião de tweets em português sobre o tema da Reforma de Previdência no contexto político brasileiro. Nossa abordagem utiliza o Multilingual Universal Sentence Encoder for Semantic Retrieval, um modelo pré-treinado recém-lançado por pesquisadores do Google para gerar representações vetoriais semanticamente ricas. Treinamos e classificamos nosso dataset em uma rede neural profunda feedfoward. Nosso modelo preliminar apresentou uma acurácia média de 82%. Esta tarefa é parte de um trabalho em andamento que visa apoiar a realização de pesquisas sobre filter bubbles.
Fatores que influenciam na continuidade da colaboração entre equipes de projetos desenvolvidos em eventos de curta duração
Authors: H. S. Leite Tiago , Figueira Filho Fernando , De Almeida Melo Leandro , R. B. de Souza Cleidson , Freire da Silva Junior Fábio
Published: October 2019

Eventos de curta duração, tais como hackathons e game jams, envolvem equipes de projeto que colaboram por um curto período de tempo. As pesquisas anteriores exploraram vários aspectos desses eventos, mas os fatores que contribuem ou atrapalham uma colaboração bem-sucedida entre membros de equipes de projeto são ainda desconhecidos. Neste artigo, são apresentados os resultados preliminares de um estudo exploratório com vinte participantes de dois grandes hackathons e um game jam. Os resultados preliminares apontam fatores positivos e negativos que contribuem para continuidade da colaboração entre membros de equipes de projetos desenvolvidos durante eventos de curta duração.
myPersonalEWS: Uma Abordagem Colaborativa para Alertar Surdos, Cegos e Analfabetos sobre Desastres
Authors: Souza Lobo Jaziel , Vieira Vaninha
Published: October 2019

Inundações, alagamentos, temporais e deslizamentos de terra são algumas das situações que podem levar a desastres naturais com perda de vidas e danos à sociedade. A fim de alertar a população, são utilizados sistemas de alerta antecipado. Geralmente as mensagens de alertas são disseminadas em formato de texto, o que acaba excluindo populações vulneráveis que têm dificuldade ou não saibam ler, a exemplo dos analfabetos, cegos e surdos. O presente trabalho apresenta uma abordagem para alertar grupos vulneráveis por meio de um Sistema de Alerta Antecipado Colaborativo e Sensível ao Contexto.
Utilização de influenciadores digitais para a mobilização de seguidores em favor de causas sociais
Authors: Oliveira Carlos , Bicharra Garcia Ana Cristina , S Vivacqua Adriana
Published: October 2019

Durante décadas, pessoas de todo o mundo, inclusive no Brasil, pressionaram o governo para participar de suas decisões. O governo digital criou meios para uma ampla interação cidadão-governo, que inclui informar pessoas, ouvir demandas e negociar decisões. Embora o governo brasileiro tenha criado muitas plataformas de participação, a participação popular é extremamente pequena, quase insignificante, mesmo por apenas visitar os sites para obter informações confiáveis. Então, é um desafio mobilizar as pessoas a exercerem seu direito de participar. Através de uma revisão sistemática da literatura verificamos que um dos motivos para a não-participação é o desconhecimento das iniciativas de e-participação. A literatura nos mostra que esse problema de comunicação (não-participação por desconhecimento) pode ser superado utilizando influenciadores digitais. Surgem então as questões que motivaram nossa pesquisa. Como os influenciadores digitais selecionam suas mensagens para postar? O que faria um influenciador digital postar material relacionado à cidadania? Quais fatores os impedem de publicar material relacionado à cidadania? Apresentamos os fatores que motivam e desmotivam o influenciador a postar causas sociais.
RW-Through: A Data Replication Protocol Suitable for GeoDistributed and Read-Intensive Workloads
Authors: Barretto Wagner  Rezende Muniz , B. Kochem Vendramin Ana Cristina , Fonseca Mauro
Published: October 2019

The microservice architecture encourages the composition of services through choreography. Choreography favors loose coupling and decentralization. The challenge then arises of finding suitable approaches for carrying it out according to the architectural style proposed by the microservices. This paper describes and compares two strategies for choreographing microservices. The first strategy is event based and makes use of a mediator to convey the messages. The second is called choreographic programming and its great advantage is to provide an overview of choreography. A case study with four microservices was implemented in each strategy. Results include a comparative table and the number of messages per minute supported by implementations.
Impacto de LoRaWAN no Desempenho de Plataformas de IoT baseadas em Nuvem e Névoa Computacional
Authors: Zyrianoff Ivan , Heideker Alexandre , Silva Dener  Ottolini , Kleinschmidt João Henrique , Kamienski Carlos  Alberto
Published: October 2019

LoRaWAN is a new technology that has been consolidating as a key data communication component to send data in IoT-based systems, due to its ability to send data over long distances with low energy costs. However, literature considers only wireless aspects, disregarding its computational aspects and its integration with IoT platforms, as well as ignoring the deployment possibilities that involve cloud and fog computing. In order to understand the computational impacts of the LoRa architecture we performed a careful performance evaluation study in a complex IoT scenario, exploring cloud and fog computing scenarios and integrating with the IoT FIWARE platform. The results show that the LoRaWAN architecture is scalable, but it has impacts on system performance.
Policy-Driven Network Traffic Rerouting Through Intent-Based Control Loops
Authors: Saraiva Nathan , Islam Nazrul , Lachos Perez Danny Alex , Esteve Rothenberg Christian
Published: October 2019

Year after year, the growth of video traffic over the Internet keeps increasing. Video streaming over best-effort networks is considered inefficient and inappropriate to meet the expected Quality of Experience (QoE) of the new generation of multimedia services. Over the past few years, a number of technologies have emerged to improve the state of the art of video delivery, including HTTP Adaptive Streaming (HAS) that adapts the bitrate according to network conditions. At the crossroads, Software Defined Networking (SDN) offers options to meet Quality of Service (QoS) objectives for improved video quality by exploiting end-to-end programmability of network behaviour. However, traditional SDN approaches require dealing with low-level details from the underlying infrastructure, interfering in the automation and agility of service deployments. To alleviate these issues and overall provide a simpler approach, Intent-Based Networking (IBN) is being proposed to abstract low-level configurations through high-level policy interfaces. In this paper, we explore such an approach by implementing intent-based control loops for video service assurance. The proposed methods dynamically reconfigure the network for service-specific requirements using IBN to define the high-level behavior. We experimentally evaluate a use case where video traffic is rerouted based on network conditions to improve the QoS. The Proof-of-Concept results point to the potential of improving video content delivery through QoS-aware Intent-based approaches.
vSDNLight: Uma Proposta de Arquitetura Leve para Provisionamento de Redes Virtuais Definidas por Software
Authors: Farias Fernando Nazareno Nascimento , Abelém Antônio Jorge Gomes
Published: October 2019

Para construção de redes virtuais definidas por softwares (vSDN), também conhecidas como slices da infraestrutura física, é necessário a utilização de soluções de hipervisores SDN. No entanto, essas soluções vêm apresentando grandes limitações de escalabilidade e desempenho, por causa de sua arquitetura baseada em proxy de serviços. Este artigo apresenta uma proposta de orquestração diferente do modelo atual provendo redes virtuais definidas por softwares através da alocação de instancias de switches virtuais sob demanda diretamente em dispositivos de comutação de baixo custo.
Solução de Nodos de Baixo Armazenamento para o Futuro da Internet
Authors: Cordeiro Ramon , Da Costa Leonardo Barbosa , Abelém Antônio Jorge Gomes
Published: October 2019

Em blockchain, os nodos completos (NCs) armazenam todas as transações existentes e são responsáveis por validar novos blocos. A quantidade de dados armazenados por NCs vem aumentando significativamente nas principais blockchains, como a do Bitcoin. O excesso de dados de blockchains aumenta a sobrecarga de armazenamento e processamento nos NCs, podendo causar a redução de validadores e armazenadores dos dados e colocando em risco o princípio de descentralização em blockchain. Este artigo propõe um mecanismo de armazenamento dos dados menos custoso para NCs de blockchain. O mecanismo visa diminuir a sobrecarga de armazenamento e processamento nos NCs, e garantir a característica de descentralização da rede.
Network Function Virtualization in Content-Centric Networks
Authors: Castillo Lema José , Neto Augusto José Venâncio , Silva Flavio De Oliveira , Kofuji Sergio Takeo
Published: October 2019

Network Functions Virtualization (NFV) offers an alternative way to design, deploy, and manage networking functions and services by leveraging virtualization technologies to consolidate network functions into general-purpose hardware platforms. On the past years extensive effort has been made to evolve and mature NFV tecnologies over IP networks. However, little or no attempts at all have been made to incorporate NFV into Information-Centric Networks (ICN). This work explores the use and implementation of virtual Network Funtions (VNFS)in Content-Centric Networks (CCN), and proposes the use of the Named Function Networking (NFN) paradigm as means to implement network functions and services in this kind of networks, distributing the network functions and services through the networks nodes and providing flexibility to dynamically place functions in the network as required and without the need of a central controller.
Modelo de maturidade de segurança cibernética para os órgãos da Administração Pública Federal
Authors: Azambuja Antonio  João , Souza Neto João
Published: October 2019

This paper presents a Cybersecurity maturity model for the agencies of the Brazilian Federal Public Administration. Qualitative research was conducted to analyze Cybersecurity maturity models found in the literature, which served as ground to develop the proposed model. To analyze, understand and construe the qualitative material, we used content analysis and an online questionnaire as technical procedures. The content analysis was divided into pre-analysis, material exploration and handling of results which allowed setting the domains of the proposed model. The model was applied through an online questionnaire to some agencies of the Brazilian Federal Public Administration. The results evidenced that, in general, the agencies surveyed have low maturity in Cybersecurity.
Uma Taxonomia para Descrever e Caracterizar Estratégias de Mitigação de Ataques DDoS em Ambientes IoT Usando Tecnologias SDN
Authors: Lemos Marcilio , Silva Esau , Sampaio Dantas Silva Felipe , Neto Augusto  José Venâncio
Published: October 2019

A Internet das Coisas têm atraído significativa atenção da comunidade de Tecnologia da Informação e Comunicação (TIC) pela perspectiva de objetos do cotidiano coletando dados do ambiente e transmitindo-os através da Internet para processamento a posteriori, sem que haja necessidade de interação humano-computador. Embora a IoT represente uma poderosa plataforma para criação de novos produtos e serviços que irão beneficiar uma ampla variedade de verticais (\textit{e-health}, V2X, \textit{smart homes}, etc), existem diversas preocupações de segurança que precisam ser remediadas para sua implementação adequada, como as vulnerabilidades explorados por agentes maliciosos para assumir o controle de dispositivos e desferir ataques DDoS em larga escala. Por conseguinte, pesquisas foram iniciadas para desenvolver soluções visando a detecção e contenção de ataques DDoS baseados em IoT, fazendo uso de tecnologias emergentes como o paradigma de Redes Definidas por Software (SDN). Neste sentido, o presente trabalho apresenta uma taxonomia para descrever e caracterizar o corpo de soluções SDN contra ataques DDoS em cenários da IoT.
Arcabouço para Orquestração Osmótica de Cloud Slices
Authors: Guardieiro Pereira Rezende Aryadne , Marques Gustavo  Silveira , Fialho Raquel , Pasquini Rafael
Published: October 2019

Essa pesquisa baseia-se no paradigma slice-as-a-service proposto no projeto Novel Enablers for Cloud Slicing (NECOS). Assumindo o fornecimento de slices fim-a-fim, as quais são compostas por recursos vindos de multiplos provedores de infraestrutura, esse trabalho explora uma abordagem de orquestração osmótica, em um contexto de cloud slice, visando preservar o SLA durante o tempo de execução. O objetivo é desenvolver um mecanismo para orquestrar o rearranjo de recursos excedentes contidos em uma parte do slice pouco utilizada para uma parte que esteja mais sobrecarregada. Este artigo traz um experimento inicial para validar a operação do ambiente de testes construído.
Arcabouço de um Sistema Inteligente de Monitoramento para Cloud Slices
Authors: Marques Gustavo  Silveira , Guardieiro Pereira Rezende Aryadne , Cunha Ian  Resende , Fialho Raquel , Pasquini Rafael
Published: October 2019

Esse trabalho se baseia no paradigma slice-as-a-service proposto no projeto Novel Enablers for Cloud Slicing (NECOS). Assumindo fatias de rede (slices) fim-a-fim, compostas por recursos de múltiplos provedores de infraestrutura, esse trabalho estuda um sistema inteligente de monitoramento capaz de selecionar dinamicamente métricas que melhor atendam às necessidades de gerenciamento dos slices, mantendo a precisão. Basicamente, deseja-se evitar o tráfego de dados desnecessários extraídos dos diferentes provedores de infraestrutura, entregando um conjunto essencial de dados para as funções de gerenciamento. Um primeiro experimento em nosso protótipo é apresentado e alguns dos benefícios da seleção de características já podem ser observados.
Towards trustworthy cloud service selection: monitoring and assessing data privacy
Authors: Basso Tania , Silva Hebert  de Oliveira , Montecchi Leonardo , de França Breno  Bernard Nicolau , Moraes Regina  Lúcia de Oliveira
Published: October 2019

Cloud services consumers deal with a major challenge in selecting services from several providers. Facilitating these choices has become critical, and an important factor is the service trustworthiness. To be trusted by users, cloud providers should explicitly communicate their capabilities to ensure important functional and non-functional requirements (such as security, privacy, dependability, fairness, among others). Thus, models and mechanisms are required to provide indicators that can be used to support clients on choosing high quality services. This paper presents a solution to support privacy measurement and analysis, which can help the computation of trustworthiness scores. The solution is composed of a reference model for trustworthiness, a privacy model instance, and a privacy monitoring and assessment component. Finally, we provide an implementation capable of monitoring privacy-related information and performing analysis based on privacy scores for eight different datasets.
Um Plano de Controle Seguro e Distribuído para Redes Definidas por Software
Authors: Silva Jefferson , Alchieri Eduardo , Bordim Jacir , Gondim João
Published: October 2019

Redes Definidas por Software (SDN) surgiram como um novo paradigma para gerenciamento de redes, definindo uma arquitetura que separa os planos de dados e de controle. Uma arquitetura SDN baseada em um controlador centralizado não escala e nem tolera falhas, pois apresenta um ponto único de falhas. Controladores distribuídos baseados em um modelo de consistência após um tempo para gerenciamento do estado da rede também apresentam sérios problemas: um modelo de programação complexo para as aplicações de rede; e pode gerar anomalias na rede. Consequentemente, soluções considerando um modelo de dados consistente para o armazenamento das informações da rede SDN foram propostos. Nestas abordagens, os controladores distribuídos usam um armazenamento de dados consistente e tolerante a falhas para armazenar o estado relevante das aplicações e da rede. Infelizmente, estas propostas existentes não consideram requisitos fundamentais de segurança para a arquitetura SDN. Este trabalho apresenta nossos esforços no projeto, implementação e avaliação de um modelo seguro e consistente para o plano de controle, baseado no DepSpace, que é um espaço de tuplas com propriedades de segurança. Resultados experimentais mostram a viabilidade prática da arquitetura proposta.
Decentralized Validation for Non-malicious Arbitrary Fault Tolerance in Paxos
Authors: Barbieri Rodrigo , dos Santos Enrique , Maciel Dias Vieira Gustavo
Published: October 2019

Fault-tolerant distributed systems offer high reliability because even if faults in their components occur, they do not exhibit erroneous behavior. Depending on the fault model adopted, hardware and software errors that do not result in a process crashing are usually not tolerated. To tolerate these rather common failures the usual solution is to adopt a stronger fault model, such as the arbitrary or Byzantine fault model. Algorithms created for this fault model, however, are considerably more complex and require more system resources than the ones developed for less strict fault models. One approach to reach a middle ground is the non-malicious arbitrary fault model. In this paper we describe how we incremented an implementation of active replication in the non-malicious fault model with a basic type of distributed validation, where a deviation from the expected algorithm behavior will make a process crash. We experimentally evaluate this implementation using a fault injection framework showing that it is feasible to extend the concept of non-malicious failures beyond hardware failures.
Técnicas de Tolerância a Falhas em uma Plataforma para Prototipagem Rápida Usando Microcontroladores
Authors: Kruger Kleber , Iaione Fabio
Published: October 2019

This paper describes the implementation of fault tolerance techniques (based on data and processing redundancy) in programming of a rapid prototyping platform using microcontrollers. To evaluate performance of these techniques was used a fault injector software and a weather station system as a case study. Experiments simulated faults in sensor readings and faults in SRAM memory regions of the weather station. Finally, the fault-tolerant system performance is presented in comparison with non-fault-tolerant system, considering incidence of failures, processing time, memory and power consumption.
Einstein and Nazi physics: When science meets ideology and prejudice
Authors: Ball Philip
Published: October 2019

In the 1920s and 30s, in a Germany with widespread and growing anti-Semitism, and later with the rise of Nazism, Albert Einstein’s physics faced hostility and was attacked on racial grounds. That assault was orchestrated by two Nobel laureates in physics, who asserted that stereotypical racial features are exhibited in scientific thinking. Their actions show how ideology can infect and inflect science. Reviewing this episode in the current context remains an instructive and cautionary tale.
Raza y tierra: Geografía, etnología y nazismo
Authors: Kophamel Wolfgang
Published: October 2019

Franz Termer (1894-1968) fue durante décadas profesor de etnología en la Universidad de Hamburgo. Su área de investigación era Centroamérica. Entre 1935 y 1962 también fue director del Museo de Etnología de Hamburgo. Su carrera académica coincide con una de las etapas más decisivas de la historia alemana, el nacionalsocialismo. Fue miembro fundador de la famosa revista Zeitschrift für Geopolitik y admirador de Friedrich Ratzel y de su «geografía política». El concepto de «sangre y tierra» como determinante de la historia se encuentra en la obra de Termer unos diez años antes de que los nazis lo utilizaran como ideología oficial del Estado. Después de la caída del nazismo se declaró «adversario» y «víctima» de esa política. Sin embargo, una lectura atenta de sus escritos revela que defendió el nacionalismo, el colonialismo, el antisemitismo y el racismo durante cinco décadas.
La memoria escrita en los huesos: Del 'funus' a la osteobiografía de Valentia
Authors: García-Prósper Elisa , Polo-Cerdá Manuel
Published: October 2019

A partir del análisis arqueológico y bioantropológico de la necrópolis romana de la calle de Quart de Valencia, el cementerio más antiguo conocido de la ciudad datado entre los siglos II a. C. y III d. C., se abordan desde un prisma interdisciplinar diversas problemáticas desconocidas hasta hace muy poco tiempo. Aspectos relativos a las costumbres funerarias, la estratificación social, la paleodemografía, la calidad de vida y el impacto de las enfermedades, la alimentación y la economía de subsistencia, así como la movilidad poblacional a través de la arqueoquímica isotópica, han contribuido a enriquecer el conocimiento del panorama de la ciudad histórica. Ciencia y memoria confluyen en Valentia a través de la cultura y costumbres documentadas en el ritual funerario (funus valentiae).
Un patrimonio particular: La importancia de las colecciones osteológicas identificadas
Authors: Santos Ana Luisa
Published: October 2019

Uno de los pilares de los estudios bioantropológicos son las colecciones osteológicas identificadas. Este trabajo tiene como objetivo describir este patrimonio y mostrar su importancia. Desde el siglo XIX, varios países han reunido conjuntos de cráneos y esqueletos de personas de las cuales se conocen algunos datos biográficos; entre otros, qué edad tenían al morir y su sexo. Actualmente existen cerca de cincuenta colecciones en países de América del Norte y del Sur, África, Europa y Asia. Las investigaciones realizadas sobre estas tienen aplicaciones en el estudio de la evolución humana, de las poblaciones del pasado, de la paleopatología y de la historia de la medicina, entre otros. La necesidad de aumentar el número de individuos y ampliar la distribución geográfica de las muestras conduce al continuo desarrollo de estas colecciones.
PENGARUH PERTUKANGAN CINA PADA BANGUNAN MESJID KUNO DI JAWA ABAD 15-16
Authors: Hartono Samuel , Handinoto Handinoto
Published: October 2019

The early shapes of ancient mosques in Java during the 15th - 16th centuries are very interesting. Many theories suggest that those shapes originated from the culture of Hinduist-Javanese or Javanese in general. Very few articles are there studying the important role of Chinese carpentry in the development of those mosques of Java, especially those in the northern coast of Java. To name a few, they are the Demak mosque (1474), the Kudus mosque (1537), and the Mantingan mosque (1559) near by Jepara. They physically show the traces of Chinese carpentry and stone masonry.This article is an early study which attempts to trace the existence of Chinese carpentry in those ancient mosques of Java. Abstract in Bahasa Indonesia : Bentuk awal mesjid kuno di Jawa (abad 15-16), sangat menarik. Banyak teori yang mengatakan bahwa bentuk dari mesjid kuno Jawa ini berasal kebudayaan Hindu-Jawa maupun dari penduduk Jawa sendiri . Tapi jarang sekali tulisan yang membahas tentang peran pertukangan Cina yang sangat besar dalam pembangunan mesjid-mesjid kuno Jawa (terutama yang terletak di pantai Utara Jawa), Beberapa diantaranya seperti Mesjid Demak (1474)), Mesjid Kudus (1537) dan Mesjid Mantingan (1559) dekat Jepara, yang terbukti secara fisik terdapat jejak-jejak pertukangan Cina, baik pertukangan batu maupun kayu disana. Tulisan ini merupakan studi awal yang mencoba untuk menelusuri keberadaan pertukangan Cina pada mesjid-mesjid kuno di Jawa tersebut. Kata kunci: Mesjid Kuno Jawa, Pertukangan Cina.
"THE AMSTERDAM SCHOOL" DAN PERKEMBANGAN ARSITEKTUR KOLONIAL DI HINDIA BELANDA ANTARA 1915-1940
Authors: Hartono Samuel , Handinoto Handinoto
Published: October 2019

The Amsterdam School is an architectural stream developed in the Netherlands between 1915 and 1930. The influence was so wide that the whole European continent and the United States of America were affected. Indonesia as one of the colonies of the Netherlands also experienced its influence directly and indirectly. This article is an early study dealing with how far the Amsterdam School has influenced the colonial architecture in the then Dutch East Indies. Abstract in Bahasa Indonesia : Amsterdam School adalah aliran arsitektur yang berkembang di Belanda antara th. 1915-1930. Pengaruhnya sangat luas, bahkan sampai keseluruh benua Eropa dan Amerika Serikat. Indonesia sebagai negara bekas jajahan Belanda waktu itu tidak luput dari pengaruh langsung maupun tidak langsung dari aliran tersebut. Tulisan ini merupakan studi awal yang membahas sampai sejauh mana pengaruh Amsterdam School pada perkembangan arsitektur kolonial di Hindia Belanda waktu itu. Kata kunci: Amsterdam School, Arsitektur Kolonial di Hindia Belanda.
RUANG PUBLIK SEBAGAI TEMPAT BERMAIN BAGI ANAK-ANAK : Studi Kasus Pengembangan "The Urban Zoo" bagi Kawasan Pecinan di Singapura
Authors: Wonoseputro Christine
Published: October 2019

The development of the city has caused a great influence through the society and the children as the part of the society. The children activity in the city has caused spontaneous playing space in the public space and it is being called "the invisible playground." This phenomenon needs to be realized and needs to be adopted in design, so that it has not only brought negative impact to existence of the city public open space but in contrary it will bring positive influence to the public open space itself. Abstract in Bahasa Indonesia : Perkembangan kota menjadi menarik diamati, karena menimbulkan fenomena yang menarik di masyarakat, terutama bagi anak-anak. Pembangunan kota yang seringkali mengabaikan keikutsertaan anak - anak sebagai elemen sosial kota mengakibatkan timbulkan ruang bermain spontan yang tidak kasat mata atau dalam penelitian ini disebutkan sebagai " the invisible playground ". Hal ini menarik untuk disadari dan diadopsi dalam desain, sehingga fenomena tersebut bukannya memicu akibat negatif bagi ruang publik kota, melainkan mampu menimbulkan sumbangan yang positif bagi ruang kota itu sendiri. Kata kunci: ruang publik, anak-anak, "the invisible playground"
SURABAYA KOTA PELABUHAN (SURABAYA PORT CITY) Studi tentang perkembangan bentuk dan struktur sebuah kota pelabuhan ditinjau dari perkembangan transportasi akibat situasi politik dan ekonomi dari abad 13 sampai awal abad 21
Authors: Hartono Samuel , Handinoto Handinoto
Published: October 2019

From an obscure area by the banks of an estuary, which is later named Kalimas (Golden River), Surabaya, located in the coastal area of northern Java, developed into an important port in the Mojopahit era in the 14th century. Its geographically strategic position would then encouraged the Dutch colonial government in the 19th century to make it one of the primary ports in the long chain of gathering the farm produce from the whole area in the eastern Java and exporting them to Europe. This decision had resulted in transforming the 'shape and structure' of this town to become like a ribbon spreading from the northern area (the port) to the south (the plantation and farming areas). In the 20th century, besides being a traditional port by the banks of Kalimas River for the local people, Surabaya was also built into a trading port and the second largest navy port after Batavia. Its role as a port city has become very essential in supporting the trades specifically in the eastern part of Indonesia and generally in the whole Indonesia. Abstract in Bahasa Indonesia : Dari sebuah tempat yang tidak berarti, di tepi muara sungai kecil, yang kelak bernama Kalimas, Surabaya yang terletak di pesisir Utara P. Jawa, berkembang menjadi sebuah pelabuhan penting di jaman Mojopahit pada abad ke 14. Letak geografisnya yang sangat strategis membuat pemerintah kolonial Belanda pada abad ke 19, memutuskannya sebagai pelabuhan utama dari rangkaian terakhir kegiatan pengumpulan hasil produksi pertanian di ujung Timur P. Jawa untuk eksport ke Eropa. Keputusan ini mengakibatkan 'bentuk dan struktur' kota menjadi semakin seperti pita yang membentang dari Utara (arah pelabuhan) ke Selatan (arah pedalaman penghasil pertanian dan perkebunan). Pada abad ke 20, Surabaya di bangun menjadi pelabuhan dagang dan pelabuhan angkatan laut modern terbesar kedua setelah Batavia, disamping pelabuhan rakyat yang terletak di tepi Kali Mas. Pada abad awal ke 21 bentuk dan struktur kota Surabaya sudah mulai mencapai keseimbangan. Perannya sebagai kota pelabuhan semakin penting dalam dunia perdagangan di Indonesia bagian Timur pada khususnya dan Indonesia secara keseluruhan pada umumnya. Kata kunci: surabaya, kota pelabuhan , perkembangan transportasi.
A 0D/3D Heterostructured All‐Inorganic Halide Perovskite Solar Cell with High Performance and Enhanced Phase Stability
Authors: Bai Fujin , Zhang Jie , Yuan Yufei , Liu Hongbin , Li Xiaosong , Chueh Chu‐Chen , Yan He , Zhu Zonglong , Jen Alex K.‐Y.
Published: October 2019

Although organic–inorganic hybrid perovskite solar cells (PVSCs) have achieved dramatic improvement in device efficiency, their long‐term stability remains a major concern prior to commercialization. To address this issue, extensive research efforts are dedicated to exploiting all‐inorganic PVSCs by using cesium (Cs)‐based perovskite materials, such as α‐CsPbI3. However, the black‐phase CsPbI3 (cubic α‐CsPbI3 and orthorhombic γ‐CsPbI3 phases) is not stable at room temperature, and it tends to convert to the nonperovskite δ‐CsPbI3 phase. Here, a simple yet effective approach is described to prepare stable black‐phase CsPbI3 by forming a heterostructure comprising 0D Cs4PbI6 and γ‐CsPbI3 through tuning the stoichiometry of the precursors between CsI and PbI. Such heterostructure is manifested to enable the realization of a stable all‐inorganic PVSC with a high power conversion efficiency of 16.39%. This work provides a new perspective for developing high‐performance and stable all‐inorganic PVSCs.
Covalent‐Organic‐Framework‐Based Li–CO2 Batteries
Authors: Li Xing , Wang Hui , Chen Zhongxin , Xu Hai‐Sen , Yu Wei , Liu Cuibo , Wang Xiaowei , Zhang Kun , Xie Keyu , Loh Kian Ping
Published: October 2019

Covalent organic frameworks (COFs) are an emerging class of porous crystalline materials constructed from designer molecular building blocks that are linked and extended periodically via covalent bonds. Their high stability, open channels, and ease of functionalization suggest that they can function as a useful cathode material in reversible lithium batteries. Here, a COF constructed from hydrazone/hydrazide‐containing molecular units, which shows good CO2 sequestration properties, is reported. The COF is hybridized to Ru‐nanoparticle‐coated carbon nanotubes, and the composite is found to function as highly efficient cathode in a Li–CO2 battery. The robust 1D channels in the COF serve as CO2– and lithium‐ion‐diffusion channels and improve the kinetics of electrochemical reactions. The COF‐based Li–CO2 battery exhibits an ultrahigh capacity of 27 348 mAh g−1 at a current density of 200 mA g−1, and a low cut‐off overpotential of 1.24 V within a limiting capacity of 1000 mAh g−1. The rate performance of the battery is improved considerably with the use of the COF at the cathode, where the battery shows a slow decay of discharge voltage from a current density of 0.1 to 4 A g−1. The COF‐based battery runs for 200 cycles when discharged/charged at a high current density of 1 A g−1.
Functionalized Hybridization of 2D Nanomaterials
Authors: Guan Guijian , Han Ming‐Yong
Published: October 2019

The discovery of graphene and subsequent verification of its unique properties have aroused great research interest to exploit diversified graphene‐analogous 2D nanomaterials with fascinating physicochemical properties. Through either physical or chemical doping, linkage, adsorption, and hybridization with other functional species into or onto them, more novel/improved properties are readily created to extend/expand their functionalities and further achieve great performance. Here, various functionalized hybridizations by using different types of 2D nanomaterials are overviewed systematically with emphasis on their interaction formats (e.g., in‐plane or inter plane), synergistic properties, and enhanced applications. As the most intensely investigated 2D materials in the post‐graphene era, transition metal dichalcogenide nanosheets are comprehensively investigated through their element doping, physical/chemical functionalization, and nanohybridization. Meanwhile, representative hybrids with more types of nanosheets are also presented to understand their unique surface structures and address the special requirements for better applications. More excitingly, the van der Waals heterostructures of diverse 2D materials are specifically summarized to add more functionality or flexibility into 2D material systems. Finally, the current research status and faced challenges are discussed properly and several perspectives are elaborately given to accelerate the rational fabrication of varied and talented 2D hybrids.
Silica Restricting the Sulfur Volatilization of Nickel Sulfide for High‐Performance Lithium‐Ion Batteries
Authors: Li Qidong , Li Li , Wu Peijie , Xu Nuo , Wang Liang , Li Matthew , Dai Alvin , Amine Khalil , Mai Liqiang , Lu Jun
Published: October 2019

Nickel sulfides are regarded as promising anode materials for advanced rechargeable lithium‐ion batteries due to their high theoretical capacity. However, capacity fade arising from significant volume changes during operation greatly limits their practical applications. Herein, confined NiSx@C yolk–shell microboxes are constructed to address volume changes and confine the active material in the internal void space. Having benefited from the yolk–shell structure design, the prepared NiSx@C yolk–shell microboxes display excellent electrochemical performance in lithium‐ion batteries. Particularly, it delivers impressive cycle stability (460 mAh g−1 after 2000 cycles at 1 A g−1) and superior rate performance (225 mAh g−1 at 20 A g−1). Furthermore, the lithium storage mechanism is ascertained with in situ synchrotron high‐energy X‐ray diffractions and in situ electrochemical impedance spectra. This unique confined yolk–shell structure may open up new strategies to create other advanced electrode materials for high performance electrochemical storage systems.
Recent Progresses on Defect Passivation toward Efficient Perovskite Solar Cells
Authors: Gao Feng , Zhao Yang , Zhang Xingwang , You Jingbi
Published: October 2019

The disorderly distribution of defects in the perovskite or at the grain boundaries, surfaces, and interfaces, which seriously affect carrier transport through the formation of nonradiative recombination centers, hinders the further improvement on the power conversion efficiency (PCE) of perovskite solar cells (PSCs). Several defect passivation strategies have been confirmed as an efficient approach for promoting the performance of PSCs. Herein, recent progress in the defect passivation toward efficient perovskite solar cells are summarized, and a classification of common passivation strategies that elaborate the mechanism according to the location of the defects and the type of passivation agent is presented. Finally, this review offers likely prospects for future trends in the development of passivation strategies.
A preliminary report on the effect of gabapentin pretreatment on periprocedural pain during in‐office posterior nasal nerve cryoablation
Authors: Steele Toby O. , Hoshal Steven G. , Kim Minji , Gill Amarbir S. , Wilson Machelle , Squires Lane D. , Bradley Strong E. , Suh Jeffrey D.
Published: October 2019

Background

Posterior nasal nerve (PNN) cryoablation is a novel surgical technique to address allergic and nonallergic rhinitis. Periprocedural pain has been reported after PNN cryoablation and there are no standardized protocols for optimal in‐office local anesthesia. This study sought to evaluate the effect of gabapentin on patient discomfort following in‐office PNN cryoablation.

Methods

Multi‐institutional prospective analysis of patients undergoing in‐office PNN cryoablation for allergic or nonallergic rhinitis between March 2018 and April 2019. Patients received local anesthesia with or without 600 mg oral gabapentin 1 hour preprocedure. Rhinitis diagnosis, demographics, and baseline disease‐specific quality of life (mini‐Rhinoconjunctivitis Quality of Life Questionnaire [RQLQ] and Total Nasal Symptom Score [TNSS]) were recorded. Patient discomfort was measured by the pain visual analogue scale (VAS) posttreatment and rated 0 to 10 on an ordinal scale. Fisher's exact and Wilcoxon 2‐sample tests were used to evaluate differences between the 2 groups.

Results

A total of 26 patients were enrolled (gabapentin n = 15, control = 11). Baseline TNSS scores in the gabapentin vs control group were median [25th percentile to 75th percentile]) 10 (7.5 to 11.0) and 9 (6.0 to 10.0) (p = 0.35). Baseline Mini‐RQLQ scores in gabapentin vs control groups were 3.21 (2.0 to 4.0) and 2.92 (2.78 to 4.35) (p = 0.51). The median VAS pain scores at 5, 20, and 30 minutes in the gabapentin vs control group were 0.0 (0.0 to 2.0) vs 3.0 (1.0 to 4.0), 2.0 (0.0 to 3.0) vs 8.0 (6.0 to 10.0), and 1.0 (0.0 to 1.0) vs 5.0 (4.0 to 6.0) (p = 0.02, p = 0.0043, and p = 0.003, respectively).

Conclusion

Preprocedure gabapentin significantly reduces immediate and delayed postprocedural patient discomfort following PNN cryoablation.
Magnetic Textures and Dynamics in Magnetic Weyl Semimetals
Authors: Araki Yasufumi
Published: October 2019

Recent theoretical and experimental attempts have been successful in finding magnetic Weyl semimetal phases, which show nodal‐point structure in the electronic bands as well as magnetic orders. Beyond uniform ferromagnetic or antiferromagnetic orders, nonuniform magnetic textures, such as domain walls and skyrmions, enrich the properties of the Weyl electrons even more in such materials. Here, a topical review on interplay between Weyl electrons and magnetic textures in those magnetic Weyl semimetals is given. The basics of magnetic textures in nontopological magnetic metals are reviewed first, and then the effect of magnetic textures in Weyl semimetals is discussed, regarding the recent theoretical and experimental progress therein. The idea of the fictitious “axial gauge fields” is pointed out, which effectively describes the effect of magnetic textures on the Weyl electrons and can well account for the properties of the electrons localized around magnetic domain walls.
Breathable polymeric materials based on high‐density polyethylene prepared by environmental crazing
Authors: Yarysheva Alena , Rukhlya Ekaterina , Grokhovskaya Tatyana , Dolgova Alla , Arzhakova Olga V.
Published: October 2019

This work addresses the preparation of breathable materials based on high‐density polyethylene (HDPE) and characterization of their performance. The sustainable HDPE mesoporous materials were prepared by the tensile drawing of the HDPE films in the presence of physically active liquids (PALEs) via the mechanism of environmental intercrystallite crazing (EIC). The prepared mesoporous materials were characterized by the different physicochemical methods such as differential scanning calorimetry (DSC), atomic force microscopy (AFM), low‐temperature nitrogen adsorption (LTNA), and so forth. Water vapor transmission rate (WVTR) of the breathable materials can be tailored by varying the tensile strain upon the EIC and is found to be equal to 597–1345 g m−2 day−1. The breathable HDPE‐based materials are characterized by good mechanical and insulating properties as well as by high water entry pressure (~43–47 bar). Hence, the deformation of HDPE films via the EIC mechanism provides an efficient route for the preparation of mesoporous breathable materials based on the low‐cost commercial polymers, which can be used as waterproof, protective, subroof, gas storage, and packaging materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48567.
Electrospun nanofiber polyacrylonitrile coated separators to suppress the shuttle effect for long‐life lithium–sulfur battery
Authors: Kiai Maryam Sadat , Eroglu Omer , Kizil Huseyin
Published: October 2019

Polymeric coating on the separator with effective polysulfides diffusion inhibition can provide intimate contact between intermediate polysulfides and conductive layer of separator for high‐energy lithium–sulfur (Li–S) batteries. Herein, polyacrylonitrile–poly(1,5‐diaminoanthraquinone) (PAN/PDAAQ) and PAN‐potassium functionalized graphene (PAN/K‐FGF) nanofibers are synthesized via electrospinning method and act as effective separators for Li–S batteries to minimize polysulfides diffusion toward the anode. PAN/K‐FGF coated separator shows capacity retention of 768 mAh g−1 after 100 cycles at 1C. The capacity maintains at 419 mAh g−1 after 500 cycles. PAN/PDAAQ nanofibers are coated on glass fiber separator functions as physical and chemical barrier for polysulfides diffusion. Therefore, the cell with PAN/PDAAQ coating on the separator demonstrates capacity retention of 881 mAh g−1 after 100 cycles at 1C and small capacity decay rate of 0.11% per cycle resulted in 800 cycles at 1C. PAN/PDAAQ could define as an ideal separator material for Li–S batteries. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48606.