bluuebunny/crossref_metadata_2025 huggingface dataset:
DESCRIPTIVE STATISTICS OF WORK ACCIDENTS IN BRAZILIAN WOOD PRODUCT MANUFACTURING
Authors: Guimarães Pompeu Paes , Castro Vinícius Gomes de , Carmo Flavio Cipriano de Assis do , Nascimento Kauê Augusto Oliveira , Fiedler Nilton Cesar , Robert Renato Cesar Gonçalves
Published: May 2021

Wood product manufacturing involves many dangerous activities and a high incidence of work-related accidents. The objective of this study was to analyze registered and unregistered work accidents, as well as the most frequent type and rate increase over the years for different activities of wood product manufacture in Brazil. Total accidents were counted including both unregistered and registered accidents. The accidents were classified as either a typical accident, a commuting accident or occupational diseases. Evaluated production was subdivided into sawmill operations, manufacture of laminated wood and plywood, wood-derived pressed and agglomerated sheets, and furniture with a predominance of wood. Wood production presented 2,849,470 direct jobs. For the furniture manufacturing sub-sector, there was an increase in the growth rate for direct jobs. However, there was a greater number of total accidents and an increase in the rate of number of accidents over time. For sawmills and the manufacture of laminated wood and slabs, there was a decreasing trend in the rate of direct jobs and accidents. Of the total number of accidents, more than 20% were not reported. The primary accident incidence was the typical accident (88.3%), followed by commuting accidents (9.5%) and lastly occupational diseases (2.1%).
INFLUENCE OF THERMAL MODIFICATION ON THE PHYSICAL AND MECHANICAL PROPERTIES OF Eucalyptus badjensis MIXED PARTICLEBOARD / OSB PANELS
Authors: Pereira Giuliano Ferreira , Iwakiri Setsuo , Trianoski Rosilani , Rios Polliana D'angelo , Raia Renan Zunta
Published: May 2021

The objective of this research was to evaluate the effects of thermal modifications, at different temperatures and exposure times, on the technological properties of mixed particleboard / OSB panels made out of Eucalyptus badjensis. Using the wood of Eucalyptus badjensis, Particleboard, OSB and mixed Particleboard/OSB panels (control and thermally modified) were manufactured. The mixed panels’ thermal modification was carried out under three temperatures (180ºC, 200ºC and 220ºC) and two exposure times (10 minutes and 12 minutes). For the panels’ manufacturing, 6% of phenol-formaldehyde adhesive and 1% of paraffin were employed, which was calculated based on the particles’ dry mass. The water absorption and thickness swelling properties were evaluated after 2 and 24 hours of immersion, in addition to the panels’ modulus of elasticity, modulus of rupture and internal bond. Based on the results, we were able to conclude that the thermal modification affected most of the physical properties positively. From the different exposure times studied, the most effective one was the period of 12 minutes, especially for water absorption after 2 hours, which caused a reduction of 11.27%. In turn, the most effective temperature was of 220ºC, highlighting the thickness swelling after 24 hours, which caused a swelling decrease of 23.76% in comparison with the control panels. Regarding the mechanical properties, the thermal modification, in terms of the studied exposure times and temperatures, did not affect the results of the mixed particleboard /OSB panels.
ANALYSIS OF THE CHEMICAL ATTRIBUTES OF A TYPIC HAPLUDULT SOIL UNDER FOREST SYSTEMS
Authors: Gomes David Silva , Marciano Cláudio Roberto , Faustino Lucas Luís
Published: May 2021

The aim of this study was to evaluate the chemical quality of a Typic Hapludult soil under secondary forest (capoeira), pasture and three leguminous tree species: Acacia auriculiformis, Mimosa caesalpiniaefolia and Inga edulis, in Conceição de Macabú County, Rio de Janeiro State, Brazil, implemented in December 1998. Soil samples from the 0-0.10 and 0.10-0.20 m layers were collected and analyzed in July/2015. The C content in the 0.10 m layer was higher in capoeira and lower in the pasture. The CECef and CECpH=7 values and the N, P, Ca, Mg and K levels were lower in pasture, higher in Acacia auriculiformis or capoeira, and intermediate in Inga edulis and Mimosa caesalpiniaefolia. The chemical variables regarding the vegetation cover generally had the lowest values in the pasture, the highest in the Acacia auriculiformis or capoeira, and intermediate values in Inga edulis and Mimosa caesalpiniaefolia. It was concluded that revegetation leads to changes in the superficial layer of the soil which make its attributes closer to those of capoeira and further away from those of pasture, indicating an increase in quality to support the functioning of a forest ecosystem, despite the worsening of some Agronomic quality indicators.
The Effect of E-Servicescape, Website Trust and Perceived Value on Consumer Online Booking Intentions: The Moderating Role of Online Booking Experience
Authors: Amer Sally Mohamed
Published: May 2021

Nowadays, there has been a rapid growth in the number of online users, which only indicates that technology is becoming even more popular. Therefore, maintaining an effective website has become essential for businesses to gain a competitive advantage. Nevertheless, the understanding of e-servicescape attributes remains unclear, especially in the tourism and hospitality sector. Therefore, this study aims to explore how the e-servicescape of a third-party website affects consumers’ behavior by developing a research model. A structural equation model was utilized to test the conceptual model. The findings suggest that both aesthetic appeal and layout & functionality can affect website trust and perceived value. Financial security affects perceived value but does not affect website trust. Both website trust and perceived value can affect online booking intentions. Furthermore, high-experienced consumers tend to have higher website trust and perceived value than less-experienced ones. Our findings provide managers with new guidance on designing and developing effective third-party websites.
Rekenkamers in internationaal perspectief: een blik over de grens
Authors: Hofstra Paul
Published: May 2021

Audit offices from an international perspective: a look across the border

In recent years there has been a lot of discussion about and movement in the position of local audit offices in the Netherlands, For example, there is currently a bill to strengthen the audit offices in the Dutch House of Representatives (‘Tweede Kamer’), and in recent years there have been drastic cuts in the budgets of many local audit offices. The development of local audit offices nationally is therefore strongly determined by politics. Partly for this reason, it is wise to look beyond national borders and gain insight into the development and position of the local audit institutions in other European countries. It is striking that the majority of the regional European audit offices are not only considerably larger and perform more tasks – in addition to performance audits, they also audit the annual accounts – but also that there are considerably fewer decentralized audit offices per country. In addition, there are major differences in powers. For example, regional audit offices in France can in some cases impose fines and take certain cases to court. Despite the large differences, however, there are also many similarities between the various European decentralized audit institutions. For example, all audit offices conduct performance audits and independence is almost always properly guaranteed by law. The article concludes with a plea for the Dutch situation to be somewhat more in line with the development of the European decentralized audit institutions.
Order!
Authors: Huijts Stijn
Published: May 2021

Order! Gevolgen van Brexit voor de mededingingspraktijk

Brexit heeft belangrijke gevolgen voor de mededingingsrechtpraktijk, van fusiecontrole tot internationale handhavingszaken. Dit artikel legt uit waar juristen die bedrijven adviseren die zowel in het Verenigd Koninkrijk als de Europese Unie actief zijn rekening mee moeten houden.
ON THE FOURTH MOMENT OF THE MAXIMUM OF PARTIAL SUMS OF $n$-EXCHANGEABLE RANDOM VARIABLES WITH APPLICATIONS
Authors: GHARIB M.
Published: May 2021

A general formula is obtained for the fourth moment of the maximum of partial sums of $n$-exchangeable random variables derived from a result of Spitzer. The formula is applied in particular to obtain the fourth moment of the maximum of adjusted partial sums of normal summands. This is of direct relevance to reservoir design and the analysis of the structure of stochastic processes and time series.
A NOTE ON HADAMARD'S INEQUALITY
Authors: YANG GOU-SHENG , HONG MIN-CHUNG
Published: May 2021

In the present note we establish a new convex function related to the well known Hadamard's inequality by using a fairly elementary analysis.
NONEXISTENCE OF POSITIVE SOLUTIONS OF A NONLINEAR PARTIAL DIFFERENCE EQUATION
Authors: LIU SHU-TANG , CHENG SUI-SUN
Published: May 2021

Necessary conditions are derived for the existence of positive solutions of a class of nonlinear partiai' difference equations. The technique used to derive these conditions is based on the nonexistence of positive roots of an associated characteristic equation.
2017 International Society for Holter and Noninvasive Electrocardiology and the Heart Rhythm (ISHNE-HRS) expert consensus statement on ambulatory ECG and external cardiac monitoring/telemetry – report the crucial aspects
Authors: Bissinger Andrzej , Cieślak Adrianna , Lubiński Andrzej
Published: May 2021

The latest consensus of the International Society for Holter and Noninvasive Electrocardiology (ISHNE) and Heart Rhythm Society (HRS) expert group regarding the usefulness of ambulatory ECG and external cardiac monitoring/telemetry (AECG) has been published in 2017. The aim of the ISHNE-HRS experts was to systematise current state of knowledge of AECG in the treatment of cardiovascular diseases and to present the most recent development of technology in ECG monitoring. There was also shown the role of electrocardiography in correct diagnosis, therapy and risk stratification of sudden cardiac death in particular diseases. The authors emphasized the importance of selecting appropriate AECG techniques, taking into consideration the prevalence of symptoms/arrhythmias and possible limitations of each technique.
Cardiac resynchronization therapy – ICD-VR upgrade after transcatheter aortic valve implantation
Authors: Denysiuk Piotr , Szczasny Marcin , Chromiński Tomasz , Grzywna Ryszard
Published: May 2021

Transcatheter aortic valve implantation (TAVI) procedure is often complicated by left bundle branch block – mostly associated with the vicinity of the conduction system and the procedure's technique itself. In patients with coexisting advanced heart failure that suffered from this complication cardiac resynchronization therapy may be the right choice. We report first (to the best of our knowledge) case of a patient after TAVI that benefited significantly from an ICD to CRT-D upgrade.
Consensus document on management of cardiac implantable electronic de­vice leads and lead extraction
Authors: Mitkowski Przemysław
Published: May 2021

New expert consensus document is a result of cooperation of 10 worldwide scientific societes, including HRS and EHRA, updates knowledge and recommendations on management of cardiac implantable electronic device leads and lead extraction. The definition of extraction clinical success was changed limiting the residual part of the lead left in cardiovascular system to 4 cm. Significant part of the document is dedicated to diagnosis of lead failure and its differential diagnosis with other reasons which cause a lead malfunction. New precise definition of different examples of infective complication of CIED from pocket erosion to CIED endocarditis were established. Antibiotic therapy is necessary after all extractions due to infective complication but its longevity should be form 10 days to 6 weeks or more depending on the final diagnosis. All infective indications for lead extraction except for superficial incisional infection belongs to class I indications. Numerous indications for lead extraction due to non-infective indications were simplified and class of recommendation has been lowered. Periprocedural management of patients has been described in details. Risk factors of complications and long term mortality were listed.
His BUNDLE Pacing – for whom? A comment on the meta-analysis after 20 years of experience
Authors: Zając Dariusz
Published: May 2021

Permanant His bundle pacing is method spreading over the years though almost twenty years experience does not bring answers to many important questions. There is a short comment to the paper by Zanon F. et al. Permanent His-bundle Pacing: a Systematic Literature Review and Meta-analysis. Europace 2018 presented. We discuss the efficacy and method’s performance refering to latest original papers.
Telemedicine: LEGAL CONDITIONS AND IMPLEMENTATION IN POLAND
Authors: Mitkowski Przemysław
Published: May 2021

Dynamic development of systems for data acquisition and transfer facilitate broader usage of this technology in medicine, allowing quick uploading and integrating data, supporting decision taking in diagnosis and treatment. Significant benefits were proved in patients who underwent telemonitoring of cardiac implantable electronic devices. In TRUST, CONNECT, ECOST trials reduced number of planned in-patients visits, shortening of time from unset of arrhythmic or related to improper system function event to evaluation and clinical response and also reduction in number of shock delivered has been confirmed. In ALTITUDE registry patients who were follow-up with telemonitoring demonstrated reduced mortality. These results were confirmed in randomized controlled trial (IN-TIME), which showed 64% relative reduction of death in group with remote monitoring. Unfortunately, in REM-HF trial mortality benefit was not reproduced. There were significant differences between last two trials, which could play role in differences in final results: different frequency of remote transmissions – once daily (IN-TIME); once a week (REM-HF) and lower percentage of patients who were connected after receiving data in the latter trial (63 vs 80%). There were also striking differences in death rate in different groups among mentioned trials.
In the paper the legal standing was summarized and the statements and opinions of Commission for Informa­tics and Telemedicine of Polish Cardiac Society were pointed out. The latter documents straighten out terms related to telemedicine and list indications as well as requirements to implement procedures in the field of remote care.
Atrial fibrillation recorded by implantable devices – if and when to start anticoagulation? Do we have a clear answer?
Authors: Gwizdała Adrian , Katarzyńska-Szymańska Agnieszka
Published: May 2021

The paper comments on the results of the study on anticoagulation use in patients with device-detected atrial fibrillation. We discussed the results of the study, up-to-date knowledge and current therapeutic options.
Cardiac resynchronization therapy outcomes in patients with chronic heart failure and comorbidity
Authors: Michalik Jędrzej , Szołkiewicz Marek
Published: May 2021

Chronic heart failure (CHF) is currently the most biggest problem of clinical cardiology. It occurs in isolation rather rarely; it is usually accompanied by multiple comorbidities that affect the treatment outcomes. Some methods of cardiac electrotherapy are used in the treatment of patients with CHF, especially resynchronization therapy (CRT), because they efficiently improve a quality of life and reduce overall mortality. However, there are doubts if the cardiac electrotherapy methods are equally effective in patients with the widespread multiple comorbidity. In this review, we present current opinion on the legitimacy for CRT use in patients with CHF and multimorbidity burden.
Will patient’s genetic profile help to choose treatment method of atrial fibrillation?
Authors: Fuglewicz Artur
Published: May 2021

The paper comments an attempt of genetic score creation of potential atrial fibrillation ablation failure or recurrence AF. This genetic risk score is based on single nucleotide polymorphisms (SNPs) analysis.
Dementia and microstroke in atrial fibrillation
Authors: Wojdyła-Hordyńska Agnieszka
Published: May 2021

Atrial fibrillation and dementia, characterized by high morbidity and mortality, have become an epidemic of the 21st century. The relationship between atrial fibrillation, dementia and microstroke has been well documented. Due to the increasing incidence of these diseases, they are of great socioeconomic importance. Numerous studies try to identify effective methods of the prevention and treatment. Recent studies have shown
a link between cognitive impairment, dementia and Alzheimer's disease in combination with vascular risk factors and cardiovascular disease. These mechanisms include ischemic stroke - both silent and symptomatic, micro-stroke, cerebral bleeding, and impaired cerebral circulation. The risk of stroke associated with atrial fibrillation may increase up to 5-fold, and stroke is a significant factor of cognitive impairment and dementia.
Atrial fibrillation ablation – the value of AF burden monitoring in the long-term follow-up
Authors: Wojewoda Katarzyna , Wysokińska Katarzyna , Stachyra Milena , Głowniak Andrzej
Published: May 2021

Atrial fibrillation (AF) is the most common arrhythmia, increasing the risk of stroke and all-cause mortality, predominantly due to cardiovascular diseases. Catheter ablation (CA) is recommended therapy, with far better long-term outcome compared to antiarrhythmic medication, and prolonged cardiac monitoring is crucial in the post-ablation follow-up. Due to technology advancements, we can introduce not only more effective methods for invasive AF treatment, but also the valuation of its long-term outcome. Implantable cardiac monitors (ICMs) provide continuous ECG recording, required to assess the exact time of AF duration. AF burden, defined as the proportion of time an individual is in AF during the monitoring period is an excellent quantitative indicator for more complex evaluation of the AF ablation outcome, presenting it not merely as the binary effect.
Prevention of atrial fibrillation – non-modifiable and modifiable risk factors for AF
Authors: Wojdyła-Hordyńska Agnieszka , Hordyński Grzegorz
Published: May 2021

Atrial fibrillation is one of the most common arrhythmias, with a significant increase in incidence in recent years. AF is a major cause of stroke, heart failure, sudden cardiac death, and cardiovascular disease. Timely intervention and modification of risk factors increase chance to stop the disease. Aggressive, multilevel prevention tactics are a component of combined treatment, including – in addition to lifestyle changes, anticoagulant therapy, pharmacotherapy and invasive anti-arrhythmic treatment – prevention of cardiovascular diseases, hypertension, ischemia, valvular disease and heart failure.
Retrospectively perceived parental attitudes and the need for cognition in people with high academic achievements
Authors: Żmuda Agnieszka , Sękowski Andrzej E.
Published: May 2021

This article is a study of the relationship between the need for cognition (PP) and retrospectively perceived parental attitudes in people with high academic achievements. First, it presents concepts of psychological theories explanting the nature of the need for cognition and reviews theoretical outlines of parental attitudes. Secondly, the paper presents a description and analysis of the results of a study aimed at validating hypotheses on the relationships between the need for cognition and perceived parental attitudes. The study covered 207 people (102 beneficiaries of a scholarship granted by the Ministry of Science and Higher Education for scientific achievements and 105 people from a control group, who did not have high academic achievements). The results did not confirm the hypothesis, indicating a lack of relationships between the measures variables in people with high academic achievements, and only one statistically significant relationship between the need for cognition and inconsistency of the father’s attitude in the control group.
Mothers’ declarations about ways to praise young children
Authors: Szymanik-Kostrzewska Anna , Michalska Paulina
Published: May 2021

The content of praise given to children co-determines their effectiveness. Certain ways of praising may not only be ineffective, but may even be harmful to children. The aim of the study was to determine which praise methods, categorized by content, are most often used by mothers of young children and whether their frequency is related to the age and gender of their children. 465 mothers of children aged 1–7 were examined using the
Questionnaire of Ways of Praise (Kwestionariusza Sposobów Chwalenia). Participants reported most often praising the effect of children’s activity, then the way the child performed the activity. They described what they considered praiseworthy, formulated passing praise, and emphasized the importance of the child’s behavior for other people slightly less often. They rarely declared praise by comparing the child with other children. Older children were more often asked what they think when being praised, were more often compared with other children, and put as an example.
Younger children were more often praised in person. The gender and age of the children were important for the use of praise regardless of the child’s behavior.
Strategy of avoidance coping with a social conflict situation by adolescents – family implications
Authors: Borecka-Biernat Danuta
Published: May 2021

The goal of the study was to assess parental attitudes and the model of parents’ responses to a social conflict situation in generating an avoidance coping strategy by adolescents. The Parental Attitudes Scale (SPR) by Mieczysław Plopa, the Questionnaire on parents’ strategies for coping with a social conflict situation (KSRwSK) by Danuta Borecka-Biernat, and the Questionnaire to study adolescents’ strategies for coping with a social
conflict situation (KSMK) by Danuta Borecka-Biernat were used. The study was carried out in junior high schools. It covered 893 adolescents (468 girls and 425 boys) at the of age of 13–15. Data analysis showed that among family conditions of the adolescents’ avoidant reacting to the emotional tension arising in a conflict situation, incorrect upbringing attitudes of parents towards adolescent children and providing a parental model of avoidance coping with a social conflict situation had a significant influence.
Together or apart? Labour migration and early maladaptive schemas of young adults
Authors: Kaczuba Adrianna
Published: May 2021

The aim of the present study was to analyze if parents’ labour migration experienced during childhood has long-lasting influence on people’s psychological functioning. It was verified whether family functioning defined as flexibility, cohesion, communication, and maladaptive beliefs was differentiated by the occurrenceof parents’ labuor migration. It was also tested if parents’ labour migration moderated the relationship between family functioning and maladaptive beliefs. The sample comprised 170 young adults (Mage = 21,81; SD = 2,99) including 94 people whose parents had migrated to work abroad, and 76 people whose parents had never left to work abroad. The study used the Polish adaptation of The Young Schema Questionnaire Short Form (YSQ-S3-PL) by Oettingen, Chodkiewicz, Mącik, and Gruszczyńska (2017), and an adaptation of the FACES-IV by Margasiński (2013). The results indicated that in eight of the tested models, the parents’ labour migration moderated the relationship between family functioning and maladaptive beliefs. The greatest susceptibility to the moderating effects of the indicated set of variables was observed in relation to the maladaptive schema of Defectiveness.
Czy tylko podatki i opłaty? O odpłatności danin publicznych. Analiza prawnoporównawcza
Authors: Gryziak Bartosz
Published: May 2021

Ogólna zasada rozgraniczenia podatków i opłat nie budzi w polskiej doktrynie wątpliwości i opiera się na kryterium odpłatności: daniny nieodpłatne stanowić mają podatki, daniny odpłatne – opłaty. Jest to podział o charakterze dychotomicznym (daniny inne niż podatki i opłaty wyodrębniane są według kryteriów innych niż odpłatność). Bliższa analiza napotyka jednak trudności, które wynikają m.in. z występowania w obrocie prawnym opłat o dyskusyjnej odpłatności. Analiza porównawcza wskazuje, że kiedy ocenia się odpłatność daniny publicznej, należy rozważyć nie tylko wąsko rozumiane świadczenie zwrotne, lecz także charakter finansowanej usługi publicznej (niepodzielna albo podzielna) oraz krąg podmiotów obciążonych daną daniną. Z tej perspektywy wyróżnić można nie dwie, lecz trzy formy danin, tj. obok podatku i opłaty wyodrębnić należy daninę hybrydową, która łączy w sobie finansowanie usługi podzielnej o niepodzielnym charakterze (cecha podatku) z zawężeniem kręgu podmiotowego do jej beneficjentów (cecha opłaty). Jest to forma daniny o coraz częstszym zastosowaniu w Polsce, lecz wiążą się z nią istotne zagrożenia dla praw majątkowych interes ariuszy
Przyczyny składania nadmiernej liczby informacji
o schematach podatkowych
Authors: Szymanek Paweł
Published: May 2021

W dniu 1 stycznia 2019 r. wprowadzono obowiązek raportowania schematów podatkowych1. Zakres przedmiotowy
polskich regulacji jest znacznie szerszy niż unijnych, gdyż obejmuje – oprócz transgranicznych schematów podatkowych
– również ich krajowe odpowiedniki. W związku z obowiązkiem raportowania schematów podatkowych
wprowadzono do Ordynacji podatkowej słowniczek terminów powiązanych z tym zagadnieniem.
Obowiązek raportowania schematów podatkowych Szefowi Krajowej Administracji Skarbowej2 ciąży na promotorze.
W artykule opisano, w jaki sposób można interpretować termin „promotor”, jak również postawiono tezę, że
jego zbyt szeroka definicja pod względem formalnym i funkcjonalnym oraz brak możliwości uzyskania interpretacji
indywidualnej dotyczącej tej definicji spowodowały składanie nadmiernej liczby informacji o schematach podatkowych.
Detrimental effects of lipopolysaccharide on the attachment and outgrowth of various trophoblastic spheroids on human endometrial epithelial cells
Authors: Kim Wontae , Choi Jungwon , Yoon Hyejin , Lee Jaewang , Jun Jin Hyun
Published: May 2021

Objective: Lipopolysaccharide (LPS) from Gram-negative bacteria causes poor uterine receptivity by inducing excessive inflammation at the maternal-fetal interface. This study aimed to investigate the detrimental effects of LPS on the attachment and outgrowth of various types of trophoblastic spheroids on endometrial epithelial cells (ECC-1 cells) in an in vitro model of implantation.Methods: Three types of spheroids with JAr, JEG-3, and JAr mixed JEG-3 (JmJ) cells were used to evaluate the effect of LPS on early implantation events. ECC-1 cells were treated with LPS to mimic endometrial infection, and the expression of inflammatory cytokines and adhesion molecules was analyzed by quantitative real-time polymerase chain reaction and western blotting. The attachment rates and outgrowth areas were evaluated in the various trophoblastic spheroids and ECC-1 cells treated with LPS.Results: LPS treatment significantly increased the mRNA expression of inflammatory cytokines (CXCL1, IL-8, and IL-33) and decreased the protein expression of adhesion molecules (ITGβ3 and ITGβ5) in ECC-1 cells. The attachment rates of JAr and JmJ spheroids on ECC-1 cells significantly decreased after treating the ECC-1 cells with 1 and 10 μg/mL LPS. In the outgrowth assay, JAr spheroids did not show any outgrowth areas. However, the outgrowth areas of JEG-3 spheroids were similar regardless of LPS treatment. LPS treatment of JmJ spheroids significantly decreased the outgrowth area after 72 hours of coincubation.Conclusion: An in vitro implantation model using novel JmJ spheroids was established, and the inhibitory effects of LPS on ECC-1 endometrial epithelial cells were confirmed in the early implantation process.
Inferência da Familiaridade de Código por Meio da Mineração de Repositórios de Software
Authors: Ibiapina Irvayne Matheus De Sousa , Alves Francisco Vanderson De Moura , Lira Werney Ayala Luz , Silva Gleison De Andrade e , Dos Santos Neto Pedro De Alcântara
Published: May 2021

O processo de desenvolvimento de software é algo complexo e, por esse motivo, é comum realizá-lo em equipe. Porém, o trabalho em equipe pode gerar problemas para uma organização. Um desses problemas é a existência de porções de código conhecidas apenas por um único desenvolvedor (ou por um grupo reduzido). Esse fato pode gerar grande dificuldade na manutenção de software. Por conta disso, é apresentado neste trabalho um conjunto de métricas e uma ferramenta, intitulada CoDiVision, que realiza mineração de dados de repositórios de código para inferir a familiaridade de cada desenvolvedor a um projeto. A CoDiVision foi avaliada por meio da análise de projetos de médio e grande porte e os resultados obtidos indicam que as métricas e a ferramenta podem ser importantes aliados ao desenvolvimento de software.
Mudança Organizacional Dirigida a Melhoria de Processos de Software: Um Mapeamento Sistemático
Authors: Anastassiu Monica , Santos Gleison , Santoro Flavia
Published: May 2021

A dificuldade que as organizações têm de dominar o processo de mudança cria obstáculos que podem afetar iniciativas de melhoria de processos de software (SPI). Para identificar e analisar os elementos que integram diferentes abordagens sobre mudança organizacional dirigidas a iniciativas de melhorias de processos de software foi realizado um mapeamento sistemático da literatura. A partir de 24 artigos, foram identificados fatores envolvidos na mudança organizacional como processos, pessoas, competências, cultura organizacional e liderança, dentre outros. Sendo uma iniciativa de SPI também uma mudança, os achados serviram de base para a construção de um meta-modelo conceitual de mudança organizacional dirigida à SPI e podem servir de apoio à elaboração de melhores estratégias e abordagens para condução de iniciativas de melhoria de processos de software.
Catálogo de Benefícios Relatados por Organizações que Implementaram Melhoria de Processos de Software
Authors: Cruz Diego , Santos Gleison
Published: May 2021

A percepção dos benefícios gerados por implementação de melhoria de processos de software (SPI) é um fator motivacional para que organizações decidam adotar e manter práticas propostas em modelos de maturidade como MR-MPS-SW e CMMI-Dev. Com objetivo de contribuir para maior evidência dos possíveis benefícios da adoção de práticas propostas por modelos e normas internacionais de SPI, esta pesquisa englobou uma abordagem sistemática de coleta e análise de dados para identificar e catalogar informações sobre benefícios de SPI obtidos no estado da prática. O método contempla execução de um mapeamento sistemático da literatura e Expert Panel cujos resultados foram analisados utilizando procedimentos de análise temática com codificação baseada em Grounded Theory (GT). A análise dos 57 relatos de experiência de implementação de SPI selecionados e das 4 entrevistas com especialistas em SPI resultaram na identificação de 121 fichas de benefícios de SPI que foram organizadas em um catálogo de benefícios. A avaliação por especialistas mostrou indícios de que a estrutura é adequada e relevante ao contexto de SPI e de que o conteúdo poderia influenciar positivamente na motivação de equipe envolvida na SPI e da alta gestão.
Estimativa de Projetos de Aplicativos Móveis: Um Mapeamento Sistemático da Literatura
Authors: Souza Ervili T. B. , Conte Tayana
Published: May 2021

As aplicações móveis têm necessidades e características diferentes em relação aos demais sistemas de informação. Essas características são fatores que influenciam a estimativa de esforço. Neste contexto, este artigo apresenta um mapeamento sistemático da literatura que caracteriza fatores preditores de esforço e modelos de estimativa voltados para projetos de aplicativos móveis. Como resultado, foram identificados cinco modelos para estimar tamanho, três modelos de esforço, três modelos para estimar tamanho e esforço em conjunto e noventa e três fatores preditores. A partir dos resultados, conclui-se que não há uma padronização dos fatores preditores de esforço que apoie os profissionais a estimar aplicativos móveis.
Capacidade do Cliente na Solicitação de Requisitos Não-Funcionais
Authors: Silva Andreia R. , Pinheiro Placido R. , Albuquerque Adriano B. , Barroso Jonatas C.
Published: May 2021

Requisitos não-funcionais (RNFs) precisam ser conhecidos e adequadamente tratados desde o início do ciclo de desenvolvimento do software. O objetivo deste artigo foi investigar se é possível obter dos clientes os RNFs da aplicação, de acordo com a opinião dos profissionais envolvidos com o processo de desenvolvimento. Para isso, foi utilizado um processo de pesquisa baseado no modelo disponibilizado por Kitchenham e Pfleeger. A pesquisa contou com a participação de 98 (noventa e oito) profissionais com diferentes níveis de experiência. Os resultados mostraram que os profissionais acreditam que a maioria dos tipos de RNFs não pode ser solicitada pelo cliente da aplicação em virtude da falta de conhecimento técnico necessário.
Integração Contínua no Desenvolvimento de Software com a Linguagem ABAP
Authors: Pletsch Leonardo Alexandre , Porto Josiane Brietzke
Published: May 2021

O processo de Integração Contínua (IC) permite avanços nos produtos de software no que tange à qualidade, disponibilidade e entrega. A IC é normalmente associada às linguagens mais comuns de mercado como Java e C#, porém seus benefícios não estão necessariamente restritos à estas linguagens. Esta pesquisa-ação mostra a implantação de IC num contexto de desenvolvimento de software na linguagem de programação Advanced Business Application Program (ABAP), num produto desenvolvido para o mercado brasileiro por uma empresa de Enterprise Resource Planning (ERP). Os resultados mostraram que mesmo com a IC não implementada em sua totalidade, resultados positivos consistentes puderam ser alcançados, tais como sistema de feedback mais eficiente e uma redução no percentual de chamados de clientes causados por bugs.
Comparando Quantitativamente Processos de Software - Experiências com Práticas Ágeis
Authors: Pereira Igor M. , Amorim Vicente J. P. , Lima Lucas C.
Published: May 2021

A adaptação de processos de software em projetos reais é comumente reportada através de dados qualitativos. Contudo, dados quantitativos podem ser usados para auxiliar a tomada de decisão e a comparação de alternativas. Este trabalho tem o objetivo de verificar a melhoria de um processo de software utilizando técnicas de processos experimentais sistemáticos. As práticas de engenharia de software utilizadas no processo de software observado são oriundas de métodos ágeis. Os resultados indicam que as práticas ágeis de construção e testes influenciam significativamente na melhoria de processos e este controle pode ser realizado com um baixo custo em pequenas organizações.
Hope Facilitators in Parents with Children Suffering from Cerebral Palsy: A Qualitative Study
Authors: Alibakhshi Hossein , Azkhosh Manoochehr , Bahmani Bahman , Khanjani Mohammad Saeed , Mohammadi Shahboulaghi Farahnaz
Published: May 2021

Background: There is ample evidence indicating that the parents of children with cerebral palsy report the experience of hope, despite all problems to which they are exposed. Objectives: This study aimed to explain the factors facilitating hope regarding the experiences of parents having children suffering from cerebral palsy. Methods: This qualitative study was carried out using the content analysis method. The experiments of 17 parents (11 females and 6 males) having children with cerebral palsy were collected in in-depth unstructured interviews in 2019, and then content analysis was performed using Strauss and Corbin’s approach. The purposive sampling method was used as long as data saturation was reached. After that, the collected data were analyzed using the content analysis method. Results: In this study, several factors were extracted as facilitators of hope in parents of children with cerebral palsy. These effective facilitating factors were classified into four main categories: promising treatment, positive beliefs, motivational drivers, and support networks. Conclusions: Various factors can be effective in promoting hope in parents of children with cerebral palsy, the detection of which would help developing educational and counseling programs and providing support for such parents.
The Effects of Quercetin on the Gene Expression of Arginine Metabolism Key Enzymes in Human Embryonic Kidney 293 Cells
Authors: Jamehdor Saleh , Farivar Shirin , Sangtarash Mohammad Hossein , Amini Razieh , Pajouhanfar Sara , Teimoori Ali
Published: May 2021

Background: Arginine metabolism is an important factor involved in tumorigenesis, progression, and survival of tumor cells. Besides, other metabolites produced in the arginine metabolism process, such as polyamines, nitric oxide, argininosuccinate, and agmatine, play key roles in different stages of tumor development. On the other hand, herbal metabolites are widely used to treat cancer. One of these herbal flavonoids is quercetin. Methods: In this study, according to MTT assay data, two concentrations of quercetin flavonoid were selected (57.5 and 115 µM) to treat human embryonic kidney 293 (HEK293) cells. Then RNA was extracted from the cells and used as a template for cDNA synthesis. Using real-time PCR, the expression of key enzymes involved in arginine metabolism was evaluated, including arginase 2 (Arg2), ornithine carbamoyl transferase (OTC), agmatinase (AGMAT), arginase 1 (Arg1), nitric oxide synthase 1 (nNOS), arginine decarboxylase (ADC), ornithine decarboxylase 1 (ODC), ornithine carbamoyl transferase (OCT), spermidine synthase (SRM), spermine synthase (SMS), argininosuccinate synthase 1 (ASS1), and argininosuccinate lyase (ASL). The Student t-test was used to analyze the data considering a P value of < 0.05 as the significance level. Results: Our results indicated significant changes in the expression of arginine metabolism enzymes after quercetin exposure, confirming a role for quercetin plant flavonoid in regulating arginine metabolism in HEK293 cells. Conclusions: Quercetin could alter the gene expression of the key enzymes involved in arginine metabolism. This was the first study investigating the effects of quercetin on arginine metabolism in HEK293 cells.
Endoscopic Stenting for Malignant Biliary Obstruction: Results of a Nationwide Experience
Authors: Lubbe Jeanne , Sandblom Gabriel , Arnelo Urban , Jonas Eduard , Enochsson Lars
Published: May 2021

Background/Aims: Many unanswered questions remain about the treatment of malignant hilar obstruction. We investigated endoscopic stenting for malignant biliary strictures, as reported in a nationwide registry.Methods: All endoscopic retrograde cholangiopancreatography (ERCP) procedures entered in the Swedish Registry of Gallstone Surgery and ERCP from January 2010 to December 2017 in which stenting was performed for malignant biliary stricture management were included in this study. Patency was estimated by determining the time to reintervention.Results: Endoscopic stenting was performed for malignant stricture management in 4623 ERCP procedures, of which 1364 (29.5%) were performed for hilar strictures. Of the hilar strictures, 320 (23.5%) were intrahepatic strictures (Bismuth–Corlette III–IV). Adverse events were more common after hilar stenting than after distal stenting (17.2% vs. 12.0%, p<0.0001). The 6-month reintervention rate was 73.4% after hilar stenting compared with 55.9% after distal stenting (p<0.0001). The 6-month reintervention rates for Bismuth–Corlette types I, II, IIIa, IIIb, and IV were 70.4%, 75.6%, 90.0%, 87.5%, and 85.7%, respectively. In multivariate analysis, the risk for reintervention was three times higher after hilar stenting than after distal stenting (hazard ratio 3.47, 95% confidence interval 2.01–6.00, p<0.001).Conclusions: This study with a relatively large patient cohort undergoing endoscopic stenting confirms that stenting for malignant hilar obstruction has more adverse events and lower patency than stenting for distal malignant obstruction.
Endoscopic Transpapillary Gallbladder Drainage for Acute Cholecystitis using Two Gallbladder Stents (Dual Gallbladder Stenting)
Authors: Sobani Zain A , Sánchez-Luna Sergio A. , Rustagi Tarun
Published: May 2021

Background/Aims: Endoscopic transpapillary gallbladder drainage (ETPGBD) is gaining popularity for the management of acute cholecystitis (AC) in high-risk patients. However, the stents placed during the procedure are not immune to obstruction. Here we describe a novel technique of stenting with two transpapillary stents and evaluate its technical feasibility, safety, and efficacy in AC.Methods: A retrospective analysis of all patients undergoing ETPGBD using dual stents for AC at our institution between November 1, 2017 and August 31, 2020 was conducted. We abstracted patient data to evaluate technical and clinical success, adverse events, and long-term outcomes. Two stents were placed either during the index procedure or during an interval procedure performed 4–6 weeks after the index procedure.Results: A total of 21 patients underwent ETPGBD with dual stenting (57.14% male, mean age: 62.14±17.21 years). The median interval between the placement of the first and the second stents was 37 days (range: 0–226 days). Technical and clinical success rates were 100%, with a recurrence rate of 4.76% (n=1) and adverse event rate of 9.52% (n=2) during a mean follow-up period of 471.74±345.64 days (median: 341 days, range: 55–1084 days).Conclusions: ETPGBD with dual gallbladder stenting is a safe and effective technique for long-term gallbladder drainage in non-surgical candidates. Larger controlled studies are needed to validate our findings for the widespread implementation of this technique.
Endoscopic Band Ligation Versus Argon Plasma Coagulation in the Treatment of Gastric Antral Vascular Ectasia: A Systematic Review and Meta-Analysis of Randomized Controlled Trials
Authors: Hirsch Bruno Salomão , Ribeiro Igor Braga , Funari Mateus Pereira , de Moura Diogo Turiani Hourneaux , Matuguma Sergio Eiji , Sánchez-Luna Sergio A. , Mancini Fabio Catache , de Oliveira Guilherme Henrique Peixoto , Bernardo Wanderley Marques , de Moura Eduardo Guimarães Hourneaux
Published: May 2021

Background/Aims: Argon plasma coagulation (APC) is the most commonly used endoscopic treatment for gastric antral vascular ectasia (GAVE). Endoscopic band ligation (EBL) has emerged as an alternative therapy. Our goal was to evaluate the feasibility, efficacy, and safety of APC and EBL for the treatment of GAVE. This is the first systematic review that included only randomized controlled trials (RCTs) on this topic.Methods: A comprehensive search was performed using electronic databases to identify RCTs comparing APC and EBL for the treatment of GAVE following the Preferred Reporting Items for Systematic Reviews and Meta-analyses guidelines.Results: Four RCTs were included, with a total of 204 patients. EBL was related to higher endoscopic eradication rates risk difference [RD], 0.29; 95% confidence interval [CI] [0.14, 0.44]; I2=0%) and less bleeding recurrence than APC (RD, 0.29; 95% CI [0.15, 0.44]; I2=0%). Patients treated with EBL required fewer blood transfusions (mean difference [MD], 1.49; 95% CI [0.28, 2.71]; I2=96%) and hospitalizations (MD, 0.29; 95% CI [0.19, 0.39]; I2=0%). The number of sessions required for the obliteration of lesions was higher with APC. There was no difference in the incidence of adverse events.Conclusions: EBL is superior to APC in the treatment of GAVE in terms of endoscopic eradication rates, recurrence of bleeding, and transfusion requirements.
Do encobrimento da memória e do outro: uma analítica acerca dos relatos da colonização
Authors: Feltrin Tascieli , Batista Natália Lampert , Corrêa Guilherme Carlos
Published: May 2021

O surgimento da América é marcado por controvérsias e pelo encobrimento da memória e do outro (nativos americanos). Nesta perspectiva, o presente artigo busca traçar uma analítica acerca dos relatos da colonização, a partir dos quais, cria-se a figura do índio e suas associações. Para isso o texto foi dividido em 5 eixos. Primeiramente, destaca-se o mito salvacionista do bom selvagem e a narrativa inicial da colonização. Após, evidencia-se a descaraterização do nativo ‘ameríndio’ de sua humanidade a fim de justificar sua exploração frente ao Novo Mundo, fato relacionado ao mito da modernidade e ao encobrimento da multiplicidade, que compõem o terceiro ponto de abordagem. No quarto ponto destaca-se a estratégica de dominação presente na nominação “índio” adotada pelos europeus para se referir aos nativos. No quinto ponto destacado ressalta-se o mito do encontro entre raças que mascara a violência e as estratégias de dominação do território. Por fim, encerra-se o texto, realizando um mergulho, submersão e emersão dos temas e pontos abordados. Conclui-se que a história dos povos americanos e a historiografia da colonização precisam ser revisitadas de forma a potencializar a percepção da outra face da chegada dos europeus e do encobrimento e desvalorização da memória dos povos originários da América.
Pensamento indígena e conhecimento histórico: reflexões acerca das funções do ensino de história
Authors: Schütz Kerollainy Rosa
Published: May 2021

O objetivo deste artigo é pensar possíveis diálogos entre a produção teórica de autores indígenas e o ensino de história, intenção que é fundamentada, entre outras coisas, a partir das demandas impulsionadas pela Lei 11.645/2008. Tal medida tornou obrigatório em 2008 o estudo dos povos indígenas nas instituições de ensino brasileiras. A estrutura do texto se divide em duas partes, a primeira contextualiza e analisa aspectos relativos à lei e também às suas Diretrizes Operacionais, publicadas em 2016. A segunda parte se dedica a aprofundar os aspectos teóricos do ensino de história indígena com base nas discussões apresentadas pela educação histórica, focando na perspectiva das narrativas indígenas e suas contribuições para a historiografia e o ensino. Assim, o texto se centra nas duas dimensões do ensino de história indígena, que são tanto a sua função social quanto cognitiva, e para isso se utiliza de autores como Ailton Krenak, Gersem Baniwa e Peter Lee.
Comunidade indígena Fuduwaadunha: vida e convivência na região de Auaris – Terra Indígena Yanomami – Roraima
Authors: Silva Castro Costa da , Bethonico Maria Bárbara de Magalhães
Published: May 2021

O estudo discute o uso do território pela comunidade Fuduwaadunha da região de Auarís na Terra Indígena Yanomami, em Roraima. Nessa região vive o povo Ye’kuana. Após a década 1960, a região de Auaris sofreu alterações na paisagem e na ocupação territorial com a chegada dos agentes não indígenas, inicialmente a Missão Evangélica da Amazônia (MEVA) e, posteriormente, a Fundação Nacional de Saúde (FUNASA), a Fundação Nacional do Índio (FUNAI) e o Exército Brasileiro (Pelotão Especial de Fronteira-PEF). Esses novos atores levaram à mudanças na forma de uso e ocupação do território para os povos que ali vivem e, nesse contexto, o artigo busca compreender os usos do território na região e os desafios que têm enfrentado diante de um novo contexto. Entre os desafios estão a gestão do território frente a um crescimento populacional e aumento de comunidades na região, com a abertura de novas áreas para produção agrícola e conflitos pelo uso dos recursos naturais (caça, pesca, extrativismo), bem como as fragilidades nos limites territoriais entre grupos sociais.