bluuebunny/crossref_metadata_2025 huggingface dataset:
ERGONOMIA DO ENVELHECIMENTO
Authors: Ferreira Mario Dos Santos
Published: December 2017

ergonomia do envelhecimento, ergonomia do idoso, acessibilidade e mobilidade urbana.

Segundo o Instituto Brasileiro de Geografia e Estatística (IBGE) (2005), em 2025, a população idosa do Brasil será de 30 milhões de indivíduos, aproximadamente 13% da população total. O texto incorpora ao tema acessibilidade-mobilidade urbana características e requisitos para apropriação física do espaço urbano, pelos pedestres ou usuários de transportes públicos, pertencentes à população idosa.
AVALIAÇÃO DE INTERFACE DE AMBIENTE VIRTUAL DE ENSINO APRENDIZAGEM INCLUSIVO
Authors: Berg Carlos Henrique , Pochamann de Quevedo Silvia R. , Vanzin Tarcísio , Ulbricht Vânia
Published: December 2017

avaliação de interface, ambiente virtual de aprendizagem, acessibilidade

 

Barreiras em interfaces digitais podem frustrar o usuário, assim este trabalho apresenta a avaliação de interface de um ambiente virtual acessível a alunos surdos e não surdos. Foram tres métodos utilizados, que identificaram erros de parseamento e problemas de navegação. O artigo encerra com recomendações aos desenvolvedores.
INTERFACES CONVERSACIONAIS: ANÁLISE DE TAREFAS PARA SIRI E GOOGLE NOW
Authors: Jacintho Fernanda Dos S. Becker , Penha Alice Demaria Silva
Published: December 2017

Interfaces conversacionais são interfaces em que a interação entre pessoas e computadores ocorrem por meio da linguagem natural. Essas interfaces já existem há algum tempo, mas somente nos últimos anos os avanços da tecnologia tornaram esse modelo algo prático. Nesse contexto, em que conversa é a interface, o desafio do design está relacionado a escolher as palavras certas. Este estudo se caracteriza por uma pesquisa qualitativa, conduzida através da realização de análise de tarefas e uma breve pesquisa bibliográfica sobre o tema. O objetivo deste artigo é analisar a performance dos assistentes na realização de tarefas simples e complexas. Resultados mostram que é possível a realização de tarefas simples somente por comando de voz, porém avanços na tecnologia dos assistentes de voz e integrações com outros serviços são necessários para que tarefas mais complexas em língua portuguesa possam ser realizadas por meio dessa interface.
ACESSIBILIDADE NO ESPAÇO PÚBLICO: O CASO DAS PRAÇAS DE FORTALEZA
Authors: Santiago Zilsa Maria Pinto , Queiroz de Santiago Cibele , Silveira Soares Thaís
Published: December 2017

Acessibilidade, Espaço público, Praça acessível.

Este trabalho refere-se à acessibilidade no espaço público, tendo como objetivo verificar o nível da produção desse espaço construído em face das exigências de um mundo diversificado. Nesse contexto, o artigo a presenta resultados de pesquisa sobre acessibilidade tendo como território de análise as praças públicas de quatro bairros de Fortaleza.
SEMIÓTICA APLICADA PARA A CONSTRUÇÃO DE SÍTIOS
Authors: Souza Andréa , Getschko Demi
Published: December 2017

Semiótica, Interface, Web

Este trabalho é um estudo sobre a aplicação da teoria da semiótica ao design de sítios. Avaliamos o sitio da Pontifícia Universidade Católica de São Paulo, na versão antiga e nova do mesmo. A metodologia escolhida foi a filosofia da semiótica de Peirce e as dimensões semióticas de Niemeyer.
USABILIDADE E ACESSIBILIDADE EM SMARTPHONES
Authors: Rocha Eron , Padovani Stephania
Published: December 2017

Este artigo tem como objetivo identificar as características físicas e cognitivas do envelhecimento e relacioná-las com implicações no design de interface de smartphones a fim de que melhorias na usabilidade tornem o aparelho mais acessível. Foi feita uma revisão bibliográfica em banco de dados científicos online. Como resultados foram identificadas características do envelhecimento que interferem na interação com o smartphone e discute-se como a acessibilidade deve ser considerada no desenvolvimento da interface de smartphones visando o usuário idoso.
PROCESSO INTERATIVO PARA AFERIÇÃO DE SINAIS VITAIS DE PACIENTES
Authors: Nishida Jonathan Ken , Nassar Victor , Vieira Milton Luiz Horn
Published: December 2017

Os sinais vitais são importantes para detectar o estado clínico dos pacientes, fornecendo informações necessárias para determinar o tratamento a ser iniciado. Neste contexto, objetiva-se discutir a proposta de uma Pulseira Multiparamétrica para ser utilizada em ambientes hospitalares, realizando a aferição e transmissão dos sinais vitais em tempo real.
DIRETRIZES ACESSÍVEIS EM AMBIENTES DIGITAIS
Authors: Morasco Júnior Marcos Airton , Domiciano Cassia Leticia Carrara , Henriques Fernanda
Published: December 2017

Este artigo apresenta uma reflexão sobre o design frente aos usuários com necessidades especiais. Promove um levantamento bibliográfico e técnico sobre parâmetros gráficos para sites. Foram consideradas diretrizes que visam a acessibilidade. Dois sites foram apresentados e analisados a fim de verificar sua eficiência quanto à inclusão.
A UTILIZAÇÃO DE JOGOS DIDÁTICOS COMO AUXÍLIO REABILITATIVO A CRIANÇAS DEFICIENTES VISUAIS
Authors: Moura João Cezar Silva , Nickel Elton Moura , Dos Santos Flávio Anthero Nunes Vianna
Published: December 2017

Este artigo reúne estudos voltados à utilização de jogos enquanto recurso didático durante a reabilitação de crianças deficientes visuais e de seus aspectos físicos, cognitivos e sensoriais. As análises foram realizadas mediante teorias e fundamentos de autores da área para identificar as contribuições que os jogos apresentam neste processo.
A ATIVIDADE COMO SUPORTE PARA PROJETO DE LAYOUT DE UM SISTEMA PRODUTIVO
Authors: Ramos Mayara , Faust Fernanda Gomes , Gontijo Leila Amaral , Ferreira Marcelo Gitirana Gomes
Published: December 2017

A ergonomia influencia diretamente a produtividade, pois melhores condições do posto de trabalho resultam em trabalhadores mais produtivos. Neste trabalho, por meio de uma AET, foram analisados os deslocamentos realizados no setor de montagem de uma fábrica, e como o layout e os deslocamentos influenciam na sua produtividade. Na montagem de um equipamento os deslocamentos são referentes a aproximadamente 35% do tempo de montagem. Em uma proposta de novo layout para o setor, a simulação dos deslocamentos demonstrou uma redução média de 75.25% na montagem de equipamentos.
O PROCESSO DE PROJETO DE INTERIORES E O USO DA ERGONOMIA NA PRÁTICA SEGUNDO A VISÃO DE PROFISSIONAIS E USUÁRIOS
Authors: De Oliveira Gilberto Rangel , Mont'Alvão Claudia Renata
Published: December 2017

O método projetual aplicado na atividade de design de interiores (ou projeto de interiores) apresenta peculiaridades próprias do profissional em ação. No presente trabalho realizou-se pesquisa descritiva junto aos profissionais e os usuários que contrataram esta prestação de serviço, a fim de compreender como ocorre esse processo e como a ergonomia costuma ser aplicada, suas consequências e resultados.
A RELAÇÃO ENTRE ALERTAS DE INTERFACE E COMPLACÊNCIA NA INTERAÇÃO HUMANO-AUTOMAÇÃO:
Authors: Goncalves Rafael Cirino , Quaresma Manuela
Published: December 2017

O objetivo deste artigo foi realizar uma análise teórica do fenômeno da complacência do usuário de sistemas automatizados sob a perspectiva da teoria de detecção de sinais e do behaviorismo radical. Buscou-se com isso entender o papel do design de interação na formação do comportamento de vigília do usuário durante uma tarefa automatizada. Os resultados deste estudo apontam para um impasse teórico que impossibilita a generalização de uma abordagem ideal de interface para a construção de sistemas autônomos. Conclui-se que uma comunicação constante pode levar à saturação dos estímulos de interface, da mesma forma que uma comunicação discreta pode levar a uma extinção do comportamento de vigília do usuário. Novos estudos empíricos são necessários para modelar o fenômeno nos diferentes casos específicos em que se aplica.
CSDSM: Cognitive switch-based DDoS sensing and mitigation in SDN-driven CDNi word
Authors: Mowla Nishat , Doh Inshil , Chae Kijoon
Published: December 2017

Content Delivery Networks (CDNs) are increasingly deployed for their efficient content delivery and are often integrated with Software Defined Networks (SDNs) to achieve centrality and programmability of the network. However, these networks are also an attractive target for network attackers whose main goal is to exhaust network resources. One attack approach is to over-flood the OpenFlow switch tables containing routing information. Due to the increasing number of different flooding attacks such as DDoS, it becomes difficult to distinguish these attacks from normal traffic when evaluated with traditional attack detection methods. This paper proposes an architectural method that classifies and defends all possible forms of DDoS attack and legitimate Flash Crowd traffic using a segregated dimension functioning cognitive process based in a controller module. Our results illustrate that the proposed model yields significantly enhanced performance with minimal false positives and false negatives when classified with optimal Support Vector Machine and Logistic Regression algorithms. The traffic classifications initiate deployment of security rules to the OpenFlow switches, preventing new forms of flooding attacks. To the best of our knowledge, this is the first work conducted on SDN-driven CDNi used to detect and defend against all possible DDoS attacks through traffic segregated dimension functioning coupled with cognitive classification.
An approach to business process simulation using mined probabilistic models
Authors: Savickas Titas , Vasilecas Olegas
Published: December 2017

There are many approaches on how to analyse business processes, but the simulation is still not widely employed due to high costs associated with simulation model creation. In this paper, an approach on how to automatically generate dynamic business process simulation model is presented. The approach discovers belief network of the process from an event log and uses it to generate a simulation model automatically. Such model then can be further customised to facilitate analysis. For evaluation of the approach, conformance of the simulation results with the source event logs was calculated. The simulation results were event logs that were generated during the simulation of the discovered models. The evaluation showed that the approach could be used for initial simulation model generation.
Epistemic justice as a virtue in hermeneutic psychotherapy
Authors: Prijic-Samarzija Snjezana , Miskulin Inka
Published: December 2017

The value turn in epistemology generated a particularly influential new
position - virtue epistemology. It is an increasingly influential
epistemological normative approach that opts for the intellectual virtues of
the epistemic agent, rather than the truth-value of the proposition, as the
central epistemic value. In the first part of this article we will attempt to
briefly explain the value turn and outline the basic aspects of virtue
epistemology, underlining the diversity of epistemic attitudes associated
with this approach and their positive impact on expanding epistemological
horizons. The second part will be focused on the virtues of epistemic
responsibility and epistemic justice as particularly appropriate for
evaluating social processes such as, for example, testimony and
conversational practices in general. In the third section we will show how
the psychiatric and psychotherapeutic communicational act can be more
efficiently analyzed and evaluated from the perspective of the virtue of
epistemic justice, than from the traditional epistemic approach based on a
monist concept of truth. The fourth and fifth section synthesize the
discussion by introducing the concept of hermeneutic psychotherapy as a
therapeutically and epistemically favorable framework for evaluating
communicational acts in psychotherapy.
The importance of knowledge for wellbeing of society in the contemporary world
Authors: Markovic Dusan , Mladjan Mrdjan
Published: December 2017

Following the recent wave of globalization, the possession of different types
of knowledge became even more important for economic development than the
possession of physical resources. The ability of a society to adopt existing
and create new knowledge thus gained fundamental importance for its
wellbeing. In this paper, we identify important aspects of the relationship
between education, creation of knowledge, economic growth, as well as both
material and immate?rial wellbeing of a society. We describe potential
problems that prevent societies from maximizing the benefit from the effort
its members invest in acquiring knowledge. The problems of failure of the
national markets for education as well as the global migrations which lead
to drain of knowledge towards economically highly developed countries are
especially analyzed. In the long run, they lead to a decline in both
national competitiveness and different aspects of the immate?rial wellbeing.
As the basis for solving these problems we propose a combination of economic
theory and the concept of solidarity between more and less devel?oped
countries, individuals and societies of their origin, respecting the free
will of individuals.
Reflecting on the principles and problems of solidarity
Authors: Vasiljevic Jelena
Published: December 2017

This review essay takes a critical look at two recently published edited
volumes, both focusing on the notion and problems of solidarity. Solidarity:
Theory and Practice (Laitinen and Pessi, eds.) attempts to unpack the complex
idea of solidaristic practice by looking at a whole range of related
concepts, such as the social brain, collective intentionality, empathy, work,
and voluntary organizations. The Strains of Commitment: The Political Sources
of Solidarity in Diverse Societies (Banting and Kymlicka, eds.), on the other
hand, focuses on a concrete problem: the generation and maintenance of
redistributive solidarity within societies marked by diversity. Still, both
volumes take a thorough and systematic look at existing scholarship on
solidarity, and by encompassing both the theoretical and the empirical, mark
a significant step forward in deepening our understanding of the role and
place of solidarity in general social theory.
Effect of electroslag remelting on the non-metallic inclusions in H11 tool steel
Authors: Burja J. , Tehovnik F. , Godec M. , Medved J. , Podgornik B. , Barbic R.
Published: December 2017

We have studied the effect of electroslag remelting on the content and composition of non-metallic inclusions. It was found that a decrease in the non-metallic inclusion content occurred during the electroslag remelting. A change in the chemical composition of the non-metallic inclusions was observed, while the aluminum and calcium contents were increased. The complexity of the inclusions also increased, as there were fewer single-phase inclusions after the electroslag remelting process. Based on the results and a thermodynamic assessment of the formation of the non-metallic inclusions, a mechanism for inclusion behavior during electroslag remelting has been proposed.
Characterization and process development for the selective removal of Sn, Sb, and As from anode slime obtained from electrolytic copper refining
Authors: Steinlechner S.
Published: December 2017

The aim of this work was to develop a process for the removal of Sn, Sb and As from anode slime out of copper refinery to disburden a subsequent pyrometallurgical processing for precious metals refinement. For this reason, a detailed literature survey was conducted, followed by a characterization to find the present compounds/alloys and their morphology. A newly developed process concept for the separate extraction of the afore mentioned three target metals was developed and verified by leaching experiments, combined with thermodynamic calculations on their behavior under varying conditions. In this context, the influence of leaching temperature, alkalinity of leaching solution, and solid-liquid ration were evaluated on the extraction yields of Sn, As, and Sb, as well as how to exploit these findings to obtain separate streams enriched in the respective metals.
Oral rehabilitation of a patient with systemic lupus erythematosus using implant-supported fixed dentures: A case report with review of important considerations
Authors: Todorovic Vladimir , Milic Marija , Vasovic Miroslav , Nikolic Zivorad
Published: December 2017

Introduction. Systemic lupus erythematosus (SLE) is a chronic autoimmune inflammatory disease with a variety of oral manifestations (dry mouth, reduced salivary flow, painful mucosal lesions and restricted mouth opening, impaired oral hygiene maintenance), as well as possible far-reaching systemic implications. In the context of SLE, oral rehabilitation with dental implants might be the most appropriate solution. However, a lack of available literature, as well as the absence of treatment protocols, often leads to unsatisfactory management of these patients. The aim of this paper was to describe oral rehabilitation of a patient with SLE using dental implants and fixed dentures in both jaws. Case outline. A 66-year-old female patient, who had suffered from SLE for over 30 years, was referred for oral rehabilitation as her chief complaints related to the existing mobile partial dentures in the jaws and poor chewing ability. Proposed oral rehabilitation with fixed dentures supported by six dental implants in the maxilla and four dental implants in the mandible, as well as prosthetic restoration of the mandibular teeth, was accepted by the patient. During the follow-up period of three years, no biological complications were observed related to the performed treatment. Conclusion. Dental implants might be the most suitable treatment modality for oral rehabilitation of patients suffering from SLE.
Integrated mind
Authors: Simic Dusan
Published: December 2017

Numerous experiments indicate a connection between integration of neural
structures activities distributed widely across the brain and conscious
experience. This paper will try to answer the question how does an
interconnection of many elements of the remarkably complex system such as
brain come about and which neural structures are the foundation of
consciousness. Through examples of various syndromes, degenerative changes
and aftermaths of surgical procedures, the role and importance of particular
brain areas in the formation of conscious experience will be analyzed. Apart
from experiments on living organisms, the analysis of integrative processes
will be presented through computer simulations. It will turn out that
consciousness appears when special conditions are satisfied, when there is a
balance between two opposing tendencies within a neural system: a tendency
for global integration and a tendency for local specialization. The system in
which there is a balance between these two tendencies is situated in a
metastable state. Metastability enables the system to have high levels of
complexity and high levels of exchanged information within itself.
Energy efficiency and economic analysis of retrofit measures for single-family residential buildings
Authors: Harmathy Norbert , Urbancl Danijela , Goricanec Darko , Magyar Zoltán
Published: December 2017

The research elaborates various solutions using detailed economic evaluation and energy efficiency calculation and simulation technology for formulating applicable, energy and cost-efficient retrofit solutions of single-family residential buildings located in temperate climate areas. Primarily the annual energy demand for a reference existing single-family residential building was determined. The economic analysis was performed for six formulated refurbishment scenarios in order to determine which of the scenarios will demonstrate optimal performance both in energy and cost efficiency. A feasibility study was performed for the most efficient scenario, which included an economic evaluation of low temperature radiant heating systems were three energy suppliers (oil, natural gas and electricity for air to water heat pump) were compared. According to financial analyses the optimal scenario includes the replacement of windows, installation of 15 cm expanded polystyrene thermal insulation, low temperature radiant floor heating, with a payback period of ten years.
A new numerical approach for solving high-order linear and non-linear differantial equations
Authors: Secer Aydin , Altun Selvi
Published: December 2017

In this paper, the Legendre wavelet operational matrix method has been introduced for solving high-order linear and non-linear multi-point: initial and boundary value problems. It has been suggested that the technique is rest upon practical application of the operational matrix and its derivatives. The differential equation is presented that it is converted to a system of algebraic equations via the properties of Legendre wavelet together with the operational matrix method. As a result of this study, the scheme has been tested on five linear and non-linear problems. The results have demonstrated that this method is a very effective and advantageous tool in solving such problems.
Numerical investigation of reliability of pump systems from thermal power plants
Authors: Bugatekin Ayse
Published: December 2017

This article deals with numerical investigation of reliability of pump systems from thermal power plants. The reliability is examined by using intensity function for a system composed of n-linearly ordered pumps. The time between failures of pumps is taken as experimental. Firstly, appropriate model for the data is determined. Estimates of parameters are obtained with maximum likelihood method and intensity function models are written. Finally, reliability of consecutive 3-out-of-5:F systems are calculated for certain time periods by using the obtained intensity functions.
Performance improvement of the heat recovery unit with sequential type heat pipes using TiO2 nanofluid
Authors: Ozturk Ahmet , Ozalp Mehmet , Sozen Adnan , Guru Metin
Published: December 2017

This paper deals with the improvement of thermal performance of the heat recovery system in air-to-air unit by using a nanofluid of TiO particles and distilled water. The 2 experimental set-up equipped with 15 copper pipes of a 1000 mm length, 10.5 mm inner diameter, and 12 mm outer diameter was used. The evaporator section consists of 450 mm of heat pipes, the condenser section is 400 mm, and the adiabatic section is 150 mm. In experimental studies, 33% of the evaporator volumes of heat pipes were filled with working fluids. Experiments were carried out at temperatures between 25?C and 90?C by using five different cooling air-flows (40, 42, 45, 61, and 84 g/s), and two different heating powers (3 kW and 6 kW) for the evaporation section, to determine heat removed from the condensation section. Trials were performed for distilled water and nanofluid respectively, and the results were compared with each other. Results revealed that a 50% recovery in the thermal performance of the heat pipe heat recovery system was achieved in the design using TiO nanofluid as the working liquid, at a heating power of 3 kW, air 2 velocity of 2.03 m/s and air-flow of 84 g/s.
A modification fractional variational iteration method for solving nonlinear gas dynamic and coupled KdV equations involving local fractional operators
Authors: Baleanu Dumitru , Jassim Hassan , Khan Hasib
Published: December 2017

In this paper, we apply a new technique, namely local fractional variational iteration transform method on homogeneous/non-homogeneous non-linear gas dynamic and coupled KdV equations to obtain the analytical approximate solutions. The iteration procedure is based on local fractional derivative and integral operators. This method is the combination of the local fractional Laplace transform and variational iteration method. The method in general is easy to implement and yields good results. Illustrative examples are included to demonstrate the validity and applicability of the new technique.
Parameter estimation in a Black Scholes
Authors: Bayram Mustafa , Orucova Buyukoz , Partal Tugcem
Published: December 2017

In this paper we discuss parameter estimation in black scholes model. A non-parametric estimation method and well known maximum likelihood estimator are considered. Our aim is to estimate the unknown parameters for stochastic differential equation with discrete time observation data. In simulation study we compare the non-parametric method with maximum likelihood method using stochastic numerical scheme named with Euler Maruyama.
Two-dimensional mathematical model of liquid fuel combustion in bubbling fluidized bed applied for a fluidized furnace numerical simulation
Authors: Nemoda Stevan , Paprika Milijana , Mladenovic Milica , Marinkovic Ana , Zivkovic Goran
Published: December 2017

Lately, experimental methods and numerical simulations are equally employed for the purpose of developing incineration bubbling fluidized bed (BFB) facilities. The paper presents the results of the 2-D CFD model of liquid fuel combustion in BFB, applied for numerical simulation of a fluidized bed furnace. The numerical procedure is based on the two-fluid Euler-Euler approach, where the velocity field of the gas and particles are modeled in analogy to the kinetic gas theory. The proposed numerical model comprises energy equations for all three phases (gas, inert fluidized particles, and liquid fuel), as well as the transport equations of chemical components that are participating in the reactions of combustion and devolatilization. The model equations are solved applying a commercial CFD package, whereby the user submodels were developed for heterogenic fluidized bed combustion of liquid fuels and for interphase drag forces for all three phases. The results of temperature field calculation were compared with the experiments, carried out in-house, on a BFB pilot facility. The numerical experiments, based on the proposed mathematical model, have been used for the purposes of analyzing the impacts of various fuel flow rates, and fluidization numbers, on the combustion efficiency and on the temperature fields in the combustion zone.
Controlling the thermal environment of underground power cables adjacent to heating pipeline using the pavement surface radiation properties
Authors: Klimenta Dardan , Perovic Bojan , Klimenta Jelena , Jevtic Milena , Milovanovic Milos , Krstic Ivan
Published: December 2017

This paper shows how the pavement surface radiation properties can be used to control the thermal environment of 110 kV underground cables in order to increase their ampacity. It is assumed that the ampacity is additionally affected by the cable bedding size and an underground heating pipeline. Thanks to an experimental apparatus, some useful data were collected for the validation of two different finite element method based models that predict the effect of the pavement surface radiation properties on the cable ampacity. The first model corresponds to the experimental apparatus and actual indoor conditions, while the second one corresponds to the theoretical case and assumed outdoor conditions (taking into account the thermal effects of solar radiation, cable bedding size, and heating pipeline). This paper examines two possible cases of outdoor conditions, one corresponding to summer period (the most unfavorable ambient conditions) and another one corresponding to winter period (the most common winter conditions in Serbia). This proposed new method is based on the experimental data and generalized using the finite element method in COMSOL. It is found that the ampacity of the considered 110 kV cable line can be increased up to 25.4 % for the most unfavorable ambient conditions and up to 8 % for the most common winter conditions.
Using Shared Decision-Making to Address Possible Overtreatment in Patients at High Risk for Hypoglycemia: The Veterans Health Administration’s Choosing Wisely Hypoglycemia Safety Initiative
Authors: Wright Samantha M. , Hedin Sandra C. , McConnell Mark , Burke Brian V. , Watts Sharon A. , Leslie Donna M. , Aron David C. , Pogach Leonard M.
Published: December 2017

IN BRIEF Successful management of patients with diabetes requires individualizing A1C and treatment goals in conjunction with identifying and managing hypoglycemia risk. This article describes the Veterans Health Administration’s Choosing Wisely Hypoglycemia Safety Initiative (CW-HSI), a voluntary program that aims to reduce the occurrence of hypoglycemia through shared decision-making about deintensifying diabetes treatment in a dynamic cohort of patients identified as being at high risk for hypoglycemia and potentially overtreated. The CW-HSI incorporates education for patients and clinicians, as well as clinical decision support tools, and has shown decreases in the proportions of high-risk patients potentially overtreated and impacts on the frequency of reported hypoglycemia.
Effectiveness of LED/Laser Irradiation on In-Office Dental Bleaching after Three Years
Authors: Mondelli RFL , Rizzante FAP , Rosa ER , Borges AFS , Furuse AY , Bombonatti JFS
Published: December 2017

The present in vivo randomized, triple-blinded, and split-mouth clinical study evaluated the effectiveness of a hybrid light (HL) source on the color change, stability, and tooth sensitivity in patients submitted to different in-office bleaching techniques. Twenty volunteers were divided into two groups and four subgroups. A split-mouth design was conducted to compare two in-office bleaching techniques (with and without light activation): 35% Lase Peroxide Sensy (LPS) + HL: 35% hydrogen peroxide (HP) + HL; 35% LPS: 35% HP; 25% LPS + HL: 25% HP + HL; and 35% Whiteness HP (WHP): 35% HP. For the groups activated with HL, the HP was applied on the enamel surface three consecutive times using a 3 × 2-minute protocol (three HL activations for two minutes each, with a 30-second interval for a total of seven minutes and 30 seconds) for each gel application, totaling 22 minutes and 30 seconds. For the other groups, HP was applied 3 × 15 minutes, totaling 45 minutes. A spectrophotometer was used to measure the color change (ΔE) before the treatment and 24 hours, one week, and one, 12, and 36 months after. A visual analog scale was used to evaluate the tooth sensitivity before the treatment, immediately following treatment, 24 hours, and one week after. Analysis of variance, Tukey's, Kruskall-Wallis, and Wilcoxon tests, all with α = 0.05 were performed. Statistical analysis did not reveal any significant differences (ΔE) between the in-office bleaching techniques with or without HL in the periods evaluated; the activation with HL required 50% less time to achieve such results. The groups without HL presented statistical differences for ΔE when comparing 24 hours with the other follow-up times (intergroup) and an increase in tooth sensitivity in the initial periods. All techniques and bleaching agents were effective on bleaching during a 36-month evaluation of color stability. The groups activated with HL presented lower sensitivity and required a lower activation time.
Effect of Finishing and Polishing on Roughness and Gloss of Lithium Disilicate and Lithium Silicate Zirconia Reinforced Glass Ceramic for CAD/CAM Systems
Authors: Vichi A , Fonzar R Fabian , Goracci C , Carrabba M , Ferrari M
Published: December 2017

Objective:

To assess the efficacy of dedicated finishing/polishing systems on roughness and gloss of VITA Suprinity and IPS e.max CAD.

Method:

A total of 24 blocks of Suprinity and 24 of e.max were cut into a wedge shape using an InLab MC-XL milling unit. After crystallization, the 24 Suprinity wedges were divided into four subgroups: group A.1: Suprinity Polishing Set Clinical used for 30 seconds and group A.2: for 60 seconds; group A.3: VITA Akzent Plus Paste; and group A.4: spray. The 24 e.max wedges (group B) were divided into four subgroups according to the finishing procedure: group B.1: Optrafine Ceramic Polishing System for 30 seconds and group B.2: for 60 seconds; group B.3: IPS e.max CAD Crystall/Glaze paste; and group B.4: spray. After finishing/polishing, gloss was assessed with a glossmeter and roughness evaluated with a profilometer. Results were analyzed by applying a two-way analysis of variance for gloss and another for roughness (α=0.05). One specimen per each subgroup was observed with a scanning electron microscope.

Results:

For roughness, materials and surface were significant factors (p<0.001). Suprinity exhibited significantly lower roughness than e.max. Also the Material-Surface Treatment interaction was statistically significant (p=0.026). For gloss, both material and surface treatment were significant factors (p<0.001). VITA Suprinity showed significantly higher gloss than e.max. Also the Material-Surface Treatment interaction was statistically significant (p<0.001).

Conclusions:

Manual finishing/polishing for 60 seconds and glazing paste are the most effective procedures in lowering the roughness of CAD/CAM silica-based glass ceramics. Manual finishing/polishing for 60 seconds allows milled silica-based glass ceramics to yield a higher gloss. VITA Suprinity displayed higher polishability than IPS e.max CAD.
India Meets the Challenge and Goes for Gold
Authors: Grennell ST
Published: December 2017

This Editorial was initially printed in the March 2017 issue of the Indian Journal of Dental Research . They have graciously allowed us to reprint it here.
INNOVATIVE APPROACH TO BUDGETING ACTIVITIES OF INSURERS IN THE CRISIS ON THE UKRAINIAN INSURANCE MARKET
Authors: Suprun Anatoliy , Petrishina Tetiana
Published: December 2017

Traditional budgeting, despite the critical comments regarding this management tool, is widely used in many medium and large enterprises, including insurance companies. The authors propose an innovative approach to budget management in insurance companies, based on the hyperdynamics feature, permanent instability of today's business environment in the country generally, in the insurance market particularly, and specifics of insurance. In particular, it is a combination of traditional budgeting and non-budgetary methods of financial planning.
CONSOLIDATED FINANCIAL STATEMENTS AS THE BASIS OF RELIABLE INFORMATION ON THE ACTIVITY OF INTEGRATED CORPORATE STRUCTURES OF UKRAINE
Authors: Yakymchuk Tetyana , Cerpinska Aija
Published: December 2017

The research presents an algorithm for comparative analysis of the integrated corporate structure reporting including three stages. The proposed algorithm for comparative analysis has been tested on the example of the consolidated financial statements of sub-holding of the industrial and financial group, the financial statements of one of the main asset parent companies in Ukraine and a subsidiary of the sub-holding. It has been established that users cannot make proper conclusions and take decisions in a comprehensive way basing upon information provided in public financial reports.
BUSINESS SOCIAL RESPONSIBILITY: ESSENCE, DEVELOPMENT TRENDS AND CURRENT PROBLEMS
Authors: Matukova Hanna , Mokriak Eduard
Published: December 2017

The article presents a definition of the category “social responsibility” based on generalization of different views and system approach. Social responsibility is referred to as a multilevel system of economic, social, legal, ethical relations between all actors of economic activity and those interested in its results, aimed at a final beneficial result for them. The authors emphasize that social responsibility of business is one of the main factors increasing its business reputation, improving its image and creating competitive advantages. Motivation criteria of the domestic system of corporate social responsibility (social, political and economic) are considered. The authors identify factors that have a negative impact on the formation of the social responsibility of Ukrainian business and create a number of problems on the way of implementation of the social responsibility policy. To solve the problems of introducing social responsibility at Ukrainian enterprises a number of measures are proposed. The latter include professional selection of senior managers by competent independent experts; establishment of normative and moral guarantees of the stability of senior managers’ successful management activities; public control over managers’ activities; improvement of corporate legislation with establishing more rigorous public control over the activities of strategically important joint stock companies; transition from the model of conflict partnership to constructive partnership in labour relations; construction of a system of permanent public monitoring of large corporate entrepreneurship.
Implementasi Teams Games Tournaments dan Number Head Together ditinjau dari Kemampuan Penalaran Matematis
Authors: Rahmawati Nurina Kurniasari
Published: December 2017

The purpose of this research is to know the influence of Teams Games Tournaments (TGT), Numbered Head Together (NHT) model to the students 'mathematical learning achievement that reviewed students' mathematical reasoning ability. This research is a quasi-experimental research with 3 × 3 factorial design. The researcher uses 2 indicators of learning achievement that is (1) Mathematics achievement test and (2) Test of mathematical communication ability. Analysis of the data used is the analysis of two-way variants with different cells. The results of this research can be summarized as follows. (1) Learning using TGT learning model makes better student's mathematical learning achievement compared to student's mathematical learning achievement with NHT learning model and conventional learning, while NHT model gives a better result of student's mathematical learning achievement from student's learning achievement with conventional learning. (2) Learners with high mathematical reasoning ability have better learning achievement compared with learners with medium ability as well as medium ability better than low ability. (3) Students have high and moderate reasoning abilities with the three learning models giving the same mathematical achievement, whereas students with low mathematical reasoning ability using TGT and NHT models provide the same mathematical achievement, but better than conventional learning models, and conventional learning models and NHT produces the same mathematical achievement. (4) The learning model of TGT and NHT in students with high, medium and low mathematical reasoning ability produce the same mathematical achievement, whereas conventional learning model on students with high and medium mathematical reasoning has the same mathematical achievement but better than students with reasoning low math.
Pengembangan Perangkat Pembelajaran mengacu Model Creative Problem Solving berbasis Somatic, Auditory, Visualization, Intellectually
Authors: Wijayanti Septiana , Sungkono Joko
Published: December 2017

This study aims to develop the valid, practical, and effective teaching instruments by using Creative Problem Solving (CPS) learning model with Somatic, Auditory, Visualization, and Intellectually (SAVI) based. This method of this study is R&D (Research and Development) which uses 4 D (Define, Design, Develop, and Development) learning model from Thiagarajan. But, this phase of the study is not spreading the developing result of the teaching instrument yet. The data collection techniques are teacher and students’ need questionnaire, observation sheet, interview, validation sheet, teacher and students’ response questionnaire, and the result test. This study produces learning instruments such as lesson plan (RPP), learning module, and students’ worksheet (LKS). The result of this study shows that 1) learning instruments by using CPS learning model with SAVI based such as lesson plan, learning module, and student’s worksheet includes in good category based on the expert judgement generally, 2) students and teacher’s response toward the learning by using CPS learning model with SAVI based show that they are interested in learning process, new learning model which is not used before, and they are also interested in the student’s worksheet and learning module, and 3) CPS learning model with SAVI based is effective to use in learning distance in space. From this result of the study, it can be concluded that the developed learning instrument is valid, practical, and effective.
De los Habsburgo a los Borbones en el Río de La Plata. A trescientos años del gobierno de Bruno Mauricio de Zavala
Authors: Tarragó Griselda , Birocco Carlos María
Published: December 2017

Introducción al dossier De los Habsburgo a los Borbones en el Río de La Plata. A trescientos años del gobierno de Bruno Mauricio de Zavala
Comercio Exterior Argentino (1935-1946): Comportamiento de las Importaciones en un Contexto de Turbulencia Internacional.
Authors: Gomez Teresita , Ruiz Julio
Published: December 2017

La estructura de la economía argentina, hasta la crisis de los años treinta, se había conformado de acuerdo a su inserción en el mercado internacional como exportador de bienes primarios alimentarios e importador de bienes energéticos y manufacturados. A partir de las modificaciones que se producen a nivel del comercio, especialmente la dificultad de las importaciones de bienes, se desarrolla la industrialización, orientada hacia la sustitución de importaciones. Nos interesa analizar la contribución del comercio exterior a esta transformación de estructura que se va produciendo. Se utilizan como fuentes: series de comercio exterior correspondientes a esos años (1935-1947), revistas especializadas y periódicos.
Ceruso, Diego: La izquierda en la fábrica. La militancia en el lugar de trabajo, 1916-1943. Buenos Aires: Imago Mundi, 2015, 320 pp.
Authors: Venero Felipe
Published: December 2017

En este contexto debemos situar la publicación de La izquierda en la fábrica. La militancia en el lugar de trabajo, 1916-1943. El libro es el resultado directo de la tesis doctoral de Diego Ceruso y la cristalización de una larga investigación, de la que ya tuvimos un avance significativo con la aparición de su tesis de grado (Ceruso, 2010). La continuidad del objeto de estudio entre ambas publicaciones se ve enriquecida por una extensión del marco temporal examinado, con la ampliación del espectro sindical observada, con el notorio incremento de las fuentes abordadas y con una mirada más amplia en cuanto a la militancia de izquierda.
Tierra vacante y proceso de expansión urbana en las periferias del Partido de La Plata
Authors: Cortizo Daniela
Published: December 2017

El objetivo del presente artículo es aportar una visión integral de la problemática de la tierra vacante en el Partido de La Plata, introduciendo variables de análisis que den cuenta de las características del proceso de expansión urbana en las periferias de la ciudad. La metodología adoptada identifica las tierras vacantes del caso de estudio, para analizarlas según dos variables: las intensidades y formas de ocupación del territorio dominantes, y el marco legal normativo que rige el uso potencial futuro de esas tierras. En función de este análisis, los resultados obtenidos sintetizan aspectos relevantes del actual proceso de expansión de las periferias urbanas, identificando las características del eje de crecimiento en donde se encuentran localizadas, en relación a las formas de ocupación del suelo y a las tierras vacantes intersticiales.
Diagnostic power and healthcare resource consumption of a dedicated workflow algorithm designed to manage thoracic impedance alerts in heart failure patients by remote monitoring
Authors: Ricci Renato P. , Morichelli Loredana , Porfili Antonio , Quarta Laura , Sassi Anna
Published: December 2017

Purpose

Modern cardiac implantable devices provide diagnostic information on several physiological variables which are associated with worsening heart failure, creating an opportunity for early intervention to prevent heart failure symptoms and hospitalizations. We evaluated diagnostic accuracy and workload of a remote monitoring (RM) workflow algorithm which leverages intrathoracic impedance and other device diagnostics.

Methods

In our RM workflow a team of expert nurses was responsible for continuity of care, direct relationship with patients and implementation of a specific protocol to evaluate RM alerts and to limit unnecessary resource consumption. Each patient was univocally assigned to a reference nurse. End points were diagnostic accuracy, healthcare utilization, defined as any hospital admission, and actionability of alerts, defined as medication change or other clinical action.

Results

One-hundred twenty-six consecutive patients with implantable cardioverter defibrillator/cardiac resynchronization therapy defibrillator were followed for a median time of 23 months. Out of 2176 remote transmissions, 893 (41%) in 111 patients (88.1%) showed clinically relevant events triggered by 574 alerts [2.2 (95% confidence interval = 2.0–2.4) per patient per year]. Among 309 alerts with intrathoracic impedance crossing, heart failure deterioration was confirmed in 116 (37.5%). Clinical actions followed 76/116 (65.5%) true heart failure alerts and 17/193 (8.8%) false-positive alerts (P < 0.001). In particular, drug therapy change followed 72/116 (62.1%) true heart failure alerts and 15/193 (7.8%) false-positive alerts (P < 0.001). Healthcare utilization occurred in 65.5% true heart failure alerts and in 24.9% false-positive alerts (P < 0.001).

Conclusion

A dedicated workflow algorithm results in more focused clinical surveillance leading to prompt detection and treatment of acute heart failure events without wasting healthcare resource.
Natural Deys from Fruit Waste as a Sensitizer for Dye Sensitized Solar Cell (DSSC)
Authors: Setiawan I Nyoman , Giriantari Ida Ayu Dwi , Ariastina Wayan Gede , Swamardika Ida Bagus Alit , Duniaji Agus Selamet , Kumara Nyoman Satya
Published: December 2017

Dye-sensitized solar cell (DSSC) is one of the potential candidates for the next generation solar cells. One of the most attractive features of the DSSC is the low production costs. The utilization of natural dyes is a new area for investigation due to their unique capability to absorb photons from natural sunlight or artificial light and convert it into electric current. The purpose of this study is to determine the potential of natural dye from red dragon fruit waste as a dye sensitizer. Red dragon fruit peel is initially extracted using methanol and the solution absorption spectra then is characterized using UV-Vis spectrophotometer. The absorption spectra is measured within a wavelength range of 400-800 nm. The characterization results show that the maximum absorption spectrum is at a wavelength of 446 nm. The natural dye solution then is used to immerse Fluorine Tin Oxide (FTO) coated with titanium dioxide (TiO2). The glass FTO is immersed in the dye solution for 24 hours. DSSC then is prepared by sandwiching the working electrode and counter electrode. An electrolyte solution is used to fill the interface between the two electrodes. The current and voltage (I-V) characteristics of DSSC is finally measured using amperemeter and voltmeter. The results indicated that the natural dye from the peel of red dragon fruit has potential as a dye sensitizer. Further research is still required to improve the performance of the DSSC.