bluuebunny/crossref_metadata_2025 huggingface dataset:
Analisis Pendapatan dan Kelayakan Usahatani Cabai Rawit di Desa Kesambi Kecamatan Mejobo Kabupaten Kudus
Authors: Saparto  dan  Sumardi M. Faela Sofa,
Published: September 2020

ABSTRAKPenelitian bertujuan untuk mengetahui pendapatan usahatani dan kelayakan finansial usahatani cabai rawit. Penelitian dilakukan di Ds Kesambi Kec Mejobo Kab Kudus bulan September 2018 s.d Juli 2019.  Jumlah petani + 130 orang dengan luas lahan berkisar 0,100 s.d. 0,500 ha. Survei dilakukan dengan metode sampling Stratified Random Sampling, jumlah sampel 25% atau 33 responden.  Pengumpulan data dengan wawancara dan pengamatan.  Data meliputi data biaya pengeluaran berupa biaya : bibit, pupuk, pestisida, tenaga kerja, penyusutan peralatan, sewa lahan, sewa mesin, dan pajak. Data penerimaan diperoleh dari data produksi dikalikan harga jual. Analisis data Pendapatan dianalisis dengan analisis biaya dan penerimaan; kelayakan dianalisis dengan RCR, BEP, dan ROI. Hasil penelitian : (1) Rata-rata pendapatan sebesar Rp. 42.499.673,-/ha; RCR = 2,10, BEP(Q) = 2.653,14 kg/ha (riil = 5.580,7), BEP(Rp) = Rp. 6.894,- (riil = Rp. 14.500,-), , ROI = 110,34% (bungan Bank = 12%/th).  (2) Kesimpulan : usahatani cabai rawit di Desa Kesambi Kecamatan Mejobo Kabupaten Kudus menguntungkan dan layak secara finansial. Kata kunci : pendapatan, kelayakan, cabai rawit
THE INFLUENCE OF TRANSFORMATIONAL LEADERSHIP STYLE AND ORGANIZATIONAL CULTURE ON ORGANIZATIONAL PERFORMANCE WITH EMOTIONAL INTELLIGENCE AS A MEDIATION VARIABLES: A CASE STUDY AT THE JATIMELATI BEKASI VILLAGE OFFICE
Authors: Mona Victorystar , Suharto Suharto , Subagja Iwan Kurniawan
Published: September 2020

This study aims to examine the influence of transformational leadership style and organizational culture on organizational performance with emotional intelligence as a mediation variable. This research uses an explanatory research approach. Explanatory research is meant to explain the causal relationship between variables through hypothesis testing or the goal of obtaining appropriate testing in drawing causal conclusions between variables and then selecting alternative actions. The basic reason for using explanatory research is because the purpose of this study is to explain and examine the effect of transformational leadership, organizational culture and emotional intelligence on organizational performance at the Jatimelati Village Office, Bekasi. The population in this study were all sub-district office employees, amounting to 30 people. In this study, in determining the sample using saturated samples. Researchers set the sample in this study consisting of 30 employees.

Based on result that partially, it shows that there is a positive and significant influence between transformational leadership style variables on emotional intelligence. Partially, it shows that there is a positive and significant influence between organizational culture variables on emotional intelligence. Partially, it shows that there is a positive and significant influence between transformational leadership style variables on organizational performance variables. Partially it shows a positive and significant influence between organizational culture variables on organizational performance variables. The emotional intelligence variable does not influence organizational performance; this is in contrast to previous research. So that it distinguishes this research from previous research. The results showed that simultaneously there was an influence between transformational leadership style and organizational culture on organizational performance, with emotional intelligence as an intervening variable
EFFECT OF MOTIVATION AND JOB SATISFACTION ON EMPLOYEE PERFORMANCE THROUGH WORKING DISCIPLINE AT PT. BAMBOO TIRTA ENGINEERING
Authors: Munawaroh Munawaroh , Suharto Suharto , Subagja Dr. Iwan Kurniawan
Published: September 2020

This study aims to: 1) To determine and analyze the effect of motivation and job satisfaction on work discipline, 2) To determine and analyze the effect of motivation and job satisfaction on employee performance, 3) To determine and analyze the effect of work discipline on employee performance, 4) To find out and analyze the influence of motivation and job satisfaction on employee performance through work discipline PT. Bambu Tirta Engineering. The research was conducted at PT. Bambu Tirta Engineering with a research sample of 64 respondents. The sampling technique uses saturated samples. Methods of data analysis using descriptive analysis and quantitative analysis with path analysis.

The results showed that: 1) there is an effect of motivation and job satisfaction on work discipline, 2) there is an effect of motivation and job satisfaction on employee performance, 3) there is an effect of work discipline on the performance of employees of PT. Bambu Tirta Engineering and 4) there is no influence between motivation and job satisfaction on employee performance through work discipline PT. Bambu Tirta Engineering. This means that the direct effect is greater than the indirect effect, the work discipline variable cannot mediate between motivation and job satisfaction on employee performance at PT. Bambu Tirta Engineering.
Divergent selection for fat index in Pannon Ka rabbits: genetic parameters, selection response
Authors: Kasza R. , Matics ZS. , Gerencsér ZS. , Donkó T. , Radnai I. , Szendrő ZS. , Nagy I.
Published: September 2020

The objective of this study was to estimate the response to selection for total body fat content of rabbits measured by computer tomography (CT). A divergent selection experiment was performed using Pannon Ka rabbits, which were previously selected for number of kits born alive. The so-called zero generation consisted of 351 Pannon Ka rabbits, from which the index, total body fat volume (cm3) divided by the body weight (kg), was measured. Rabbits with low and high fat index values were selected to form the parent groups of the lean and fat lines, respectively. The lines consisted of 55-72 females and 35-47 males, depending on the line and generation. After three generations, the rabbits were evaluated by means of a single trait animal model. The fat index showed a moderate heritability estimate (0.28±0.03). The magnitude of the common litter effect was small (0.10±0.02). The breeding values averaged per generation provided slightly asymmetrical responses. Based on the results, the divergent selection was successful in confirming that CT is a very suitable method for performing selection for body composition traits.
U–Pb geochronology of epidote by LA–ICP–MS as a tool for dating hydrothermal-vein formation
Authors: Peverelli Veronica , Ewing Tanya , Rubatto Daniela , Wille Martin , Berger Alfons , Villa Igor Maria , Lanari Pierre , Pettke Thomas , Herwegh Marco
Published: September 2020

Abstract. Monoclinic epidote is a low-µ (µ = 283U / 204Pb) mineral occurring in a variety of geological environments, participating in many metamorphic reactions and stable throughout a wide range of pressure–temperature conditions. Despite containing fair amounts of U, its use as a U–Pb geochronometer has been hindered by the commonly high contents of initial Pb with isotopic compositions that cannot be assumed a priori. We present U–Pb geochronology of hydrothermal-vein epidote spanning a wide range of Pb (3.9–190 µg g−1), Th (0.009–38 µg g−1) and U (2.6–530 µg g−1) contents and with µ values between 7–510 from the Albula area (eastern Swiss Alps), from the Grimsel area (central Swiss Alps) and from the Heyuan fault (Guangdong province, China). The investigated epidote samples show appreciable fractions of initial Pb that vary to different extents. A protocol has been developed for in situ U–Pb dating of epidote by spot-analysis laser ablation inductively coupled plasma mass spectrometry (LA–ICP–MS) with a magmatic allanite as primary reference material. The suitability of the protocol and the reliability of the measured isotopic ratios have been ascertained by independent measurements of 238U / 206Pb and 207Pb / 206Pb ratios respectively by quadrupole and multicollector ICP–MS applied to epidote micro-separates digested and diluted in acids. For age calculation, we used the Tera–Wasserburg (207Pb / 206Pb–238U / 206Pb) diagram, which does not require corrections for initial Pb and provides the initial 207Pb / 206Pb ratio if all intra-sample analyses are co-genetic. Petrographic and microstructural data indicate that the calculated ages date the crystallization of vein epidote from a hydrothermal fluid and that the U–Pb system was not reset to younger ages by later events. Vein epidote from the Albula area formed in the Paleocene (62.7 ± 3.0 Ma) and is related to Alpine greenschist-facies metamorphism. The Miocene (19.1 ± 4.0 Ma and 16.9 ± 3.7 Ma) epidote veins from the Grimsel area formed during the Handegg phase (22–17 Ma) of the Alpine evolution of the Aar Massif. Identical initial 207Pb / 206Pb ratios reveal homogeneity in Pb isotopic compositions of the fluid across ca. 200 m. Vein epidote from the Heyuan fault is Cretaceous in age (108.1 ± 8.4 Ma) and formed during the early movements of the fault. In situ U–Pb analyses of epidote returned reliable ages of otherwise undatable epidote-quartz veins. The Tera–Wasserburg approach has proven pivotal for in situ U–Pb dating of epidote and the decisive aspect for low age uncertainties is the variability in intra-sample initial Pb fractions.
Single Point Positioning with Vertical Total Electron Content estimation based on single epoch data
Authors: Fischer Artur , Cellmer Sławomir , Nowel Krzysztof
Published: September 2020

Abstract. This paper proposes a new mathematical method of ionospheric delay estimation in single point positioning (SPP) using a single-frequency receiver. The proposed approach focuses on the ΔVTEC component estimation (MSPPwithdVTEC) with the assumption of an initial and constant value equal to 5 in any observed epoch. The principal purpose of the study is to examine the reliability of this approach to become independent from the external data in the ionospheric correction calculation process. To verify the MSPPwithdVTEC, the SPP with the Klobuchar algorithm was employed as a reference model, utilizing the coefficients from the navigation message. Moreover, to specify the level of precision of the MSPPwithdVTEC, the SPP with the IGS TEC map was adopted for comparison as the high-quality product in the ionospheric delay determination. To perform the computational tests, real code data was involved from three different localizations in Scandinavia using two parallel days. The criterion were the ionospheric changes depending on geodetic latitude. Referring to the Klobuchar model, the MSPPwithdVTEC obtained a significant improvement of 15–25 % in the final SPP solutions. For the SPP approach employing the IGS TEC map and for the MSPPwithdVTEC, the difference in error reduction was not significant, and it did not exceed 1.0 % for the IGS TEC map. Therefore, the MSPPwithdVTEC can be assessed as an accurate SPP method based on error reduction value, close to the SPP approach with the IGS TEC map. The main advantage of the proposed approach is that it does not need external data.
Uncertainty analysis of the estimation of stony debris flow rainfall threshold: the application to the Backward Dynamical Approach
Authors: Martinengo Marta , Zugliani Daniel , Rosatti Giorgio
Published: September 2020

Abstract. Rainfall thresholds, namely rainfall intensity-duration conditions beyond which the probability of debris flow occurrence is considered significant, can be used as a forecasting tool in debris-flow early warning system. Many uncertainties may affect the thresholds calibration and, in turn, the reliability and effectiveness of this tool. The purpose of this study is to assess the uncertainty in the determination of the rainfall threshold for stony debris flow based on the Back Dynamical Approach (BDA) (Rosatti et al., 2019), an innovative method to estimate the rainfall duration and averaged intensity strictly related to measured debris flow. The uncertainty analysis has been computed performing two Monte Carlo cascade simulations: (i) to assess the variability in the estimate of rainfall conditions due to the uncertainty of some of the BDA parameters and (ii) to quantify the impact of this variability on the threshold parameters, obtained by using the frequentist method. Then, the deviation between these analysis outcomes and the values obtained in Rosatti et al. (2019) has been examined. The results highlight that the variability in the rainfall condition estimate is strongly related to the debris flow characteristics and the hyetograph shape. Depending on these features, the spreading of the obtained distributions can take both low and high values. Instead, the threshold parameters are characterised by a low statistical spreading. Finally, the consistency between the outcome of this study and the results obtained in Rosatti et al. (2019) has been proved and the critical issues related to the rainfall condition estimation have been discussed.
The Use of Herbicide Safener Increases the Selectivity of Nicosulfuron to Maize Crops
Authors: Cinelli Rafaela , Sauthier Barbieri Andrei , Polito Rubens Antonio , Heck Tamara , Bervian Bispo Noryam , Nunes Anderson Luis
Published: September 2020

The herbicide nicosulfuron is an important tool for weed control in maize crops; however, its incorrect use can cause yield losses to crops due to its high toxicity. The objective of this work was to evaluate the efficiency of using herbicide safener to increase selectivity of nicosulfuron to maize crops. The experiment was conducted in field conditions, and the treatments consisted of dose-response curves, using nicosulfuron at rates of 0, 15, 30, 45, and 60 g ha-1, applied with safener and/or malathion to maize crops at the V5-V6 stage. The use of organophosphorus insecticides such as malathion decrease the selectivity of nicosulfuron to maize crops. Rates of up to 60 g ha-1 were selective to the maize crops when using nicosulfuron or nicosulfuron + safener. However, plant height decreased 0.19 and 0.91 cm for each gram of nicosulfuron in the treatments nicosulfuron + safener + malathion, and nicosulfuron + malathion, respectively, at 28 days after the application. The phytotoxicity increased 0.19% and 0.97% in the treatments nicosulfuron + safener + malathion and nicosulfuron + malathion, respectively. The number of grains per row and grain yield were affected by the treatments with nicosulfuron + malathion, presenting decreases of 0.09 grains and 52 kg ha-1, respectively. Thus, adding safener to the herbicide mixture increases the selectivity of nicosulfuron to maize crops, decreases damages regarding plant height and phytotoxicity, and prevents effects of the herbicide on the number of grains per row and grain yield, up to the rate of 60 g ha-1.
Tillage Systems and Fertilization for Increase of Yam’s Local Tuber (Dioscorea esculenta) on Farming System at Moluccas
Authors: Waas Edwen D. , Kaihatu Sheny S. , Sirappa Marthen P.
Published: September 2020

A field research was conducted at Makariki Experimental Farm, Moluccas Assessment Institutes for Agricultural Technology, Central Moluccas. The study aims to know the effect of tillage systems and fertilization for increase of growth and yield of yam’s local tuber (Dioscorea esculenta). Experiments using split plot design with 20 treatments and three replications. The main plot were tillage system consisted of four tillage systems, ie: (A1) Minimum Tillage + Single Mound/”Kuming”; (A2) Minimum Tillage + Lenghtwise Mound/”Guludan”; (A3) Intensive Tillage + Single Mound, and (A4) Intensive Tillage + Lenghtwise Mound, sub plots were fertilization, consisting of (B0) Without fertilizeration; (B1) Complete NPK Fertilization (135 kg N +135 kg P2O5 + 90 kg K2O/ha), (B2) NP Fertilization (135 kg N + 90 kg P2O5 /ha), (B3) NK Fertilization (135 kg N + 135 kg K2O/ha), and (B4) PK Fertilization (90 kg P2O5 + 135 kg K20/ha). Sub plot size 4 m x 3 m with spacing of 100 cm x 75 cm. Source of fertilizer N, P and K in a row came from Urea, TSP, and KCl. Fertilizer N and K are given three times, i.e. the one third dose given at age 10 dap (days after planting), one third dose at age 30 dap and the rest one third dose at age 60 dap, whereas the P fertilizer entirely given at age 10 dap. The results showed that the tillage system and fertilization in single influence on growth, yield components and yield per hectare of yam’s local tuber, but both are no significant interactions. Intensive tillage system, followed by creating lenghtwise mound influence the growth and yield components as well as providing the highest yield of yam’s local tuber (19.97 t/ha). Complete NPK fertilization (135 kg N +135 kg P2O5 + 90 kg K2O/ha) also provides a real influence on the growth and yield components as well as providing the highest yield of yam’s local tuber (21.86 t/ha) and not significantly different compared to the NK fertilization (135 kg N + 135 kg K2O/ha) which consist of 19.58 t/ha.
Too Good to Be True: Debating Constancy in Chaucer's Legend and Christine's Cité
Authors: McCormick Betsy
Published: September 2020

This article creates a thought experiment considering how Geoffrey Chaucer and Christine de Pizan use the larger cultural milieu of the Debate about Women as something “good to think with.” Whereas critics have often approached the Legend of Good Women (ca. 1386) and Le Livre de la Cité des Dames (1405) as examples of how authors in the Debate tradition rewrote women's stories to make bad women good, this article applies recent work in cognitive science, which studies how humans create categories, to argue that both Chaucer and Christine are thinking beyond taxonomic categories to depict their “good women” as active participants in an ethical inquiry. Using ad hoc categories to enact the extreme ideals of the Debate, both authors demonstrate that such an overly active constancy is the opposite of reason. Ultimately, they reveal that a too-constant female good proves, paradoxically, to be both destructive and disloyal.
The History ofBarnaby Rudgeand the Culture of Imitation
Authors: Abraham Adam
Published: September 2020

This article argues that Barnaby Rudge is the product of two simultaneous developments in the late 1830s. First, Charles Dickens's print-cultural fear of diminishment through authorial repetition was exemplified by his predecessors Walter Scott (as revealed in Lockhart's biography) and William Harrison Ainsworth (whom Dickens befriended). Second, a culture of imitation arose in which cheap imitations of Dickens's works threatened to confuse the book-buyer and flood the market with similar wares. This article will examine one imitation, Barnaby Budge, from 1841, to demonstrate how such plagiaristic works read and misread their sources. Although Dickens's Rudge can be considered a Scott-like historical novel, it is not so much a capitulation to an older model of novel-writing; rather, this book of riot and rebellion marks Dickens's own break with the past and present.
The Squid and the Lentil: A-Hundred-and-Fifty Years under the Sea
Authors: Worth Aaron
Published: September 2020

On the occasion of the 150th anniversary of Jules Verne's Twenty Thousand Leagues under the Sea (1869–70), this article traces three vectors of Verne's, and the novel's, influence, in relation to three genres or modes of writing: science fiction, as it began to emerge as a sharply delineated category in the early twentieth century; French literary theory and philosophy, in which Verne's work appeared as a favorite touchstone of influential writers including Roland Barthes, Michel Foucault, and Pierre Macherey; and weird fiction, for which Twenty Thousand Leagues, with its monstrous squid, has been retroactively constructed as a (minor) foundational text.
An AWE-Based Diagnosis of L2 English Learners’ Written Errors
Authors: Lei Jiun-Iung
Published: September 2020

While Automated Writing Evaluation (AWE) can perform an error diagnosis (Chen & Cheng, 2008), previous studies used to exclude it from the process of error analysis. This study aimed to examine the reactions of Grammarly Premium towards a group of night school students’ English writings at a Taiwanese technical university. The participants of the research produced 175 essays. The researcher checked the data against the AWE program. 1042 errors were detected and classified into 40 types. The 40 types of errors were at three hierarchical levels: a word and phrase level, a sentence level, and a discourse level. This study suggested future studies to view AWE’s functions in a new perspective and find it a space in the process of error diagnosis.
Investigation of Perceptions Concerning Leadership Roles of Physical Education and Sport Teachers
Authors: Öktem Tuncay , Kul Murat
Published: September 2020

This study aims to investigate the perceptions of physical education and sport teachers who work in the city Bayburt concerning teacher leadership roles in terms of various variables. The population of the study consists of 42 physical education and sport teachers who work in the city Bayburt. Sampling has not been used as the whole population is included. The chapter in which the perceptions of teachers have been evaluated is used from The Scale of Perception and Expectation Identification Concerning Teacher Leadership which was developed by Beycioğlu (2009) to identify the perceptions of physical education and sport teachers concerning teacher leadership. According to the test of analysis of independent sample t-test, it is identified that female teachers have higher averages than male teachers at institutional development subscale and scale total point. Furthermore, it is found that physical education and sport teachers who have a less than 10 years experience have higher averages compared to those who have a more than 10 years experience at institutional development, professional development, collaboration among colleagues’ subscales and scale total point (p < .05). As a result, it can be stated that physical education and sport teachers who have a less than 10 years experience take part more in performing studies that are based on collaboration, creating an impact on the students and colleagues with model behavior and performing executive activities as compared to teachers who have 10 years and more experience.
Product Mix Optimization for an Oil Field Operating Company
Authors: Khonji Najla Abdulaziz , Suliman Saad M. A.
Published: September 2020

In this study, a mathematical model is formulated to select the optimal product mix of wells in terms of numbers and types of wells that helps to maximize profit. The optimization model comprises two main components, the first component is revenue which includes forecasting of production and oil price, and the second component is cost which includes capital and operating costs. In addition, the model considers all related constraints such as budget, production targets, surface facility limitations, drilling rigs availability and others. Time has influence on the model, since its output is not limited only to the types and numbers of wells to be drilled during the planned period, but also when each well to be drilled for the same plan. Actual planning data for three consecutive years is used for model testing. The results show that 42% to 47% cost saving can be achieved by using the model. The analysis shows that with every 10% increase in oil price, the profit increases by about 6%. Also, it shows that the number of rigs and the rig daily cost affect the profit tremendously, where by reducing these two parameters by 50% an increase of 66% in oil profit can be achieved. The study confirms that oil field operating companies can stand a better chance of maximizing their profit by using product mix optimization model to define the optimum schedule for the number of wells, type of wells and time of drilling.
As percepções e a atuação de professoras do ensino fundamental I diante do bullying escolar
Authors: Lima Danyelle Shmith de , Pereira Rosana Aparecida Tenorio , Francisco Marcos Vinicius
Published: September 2020

A presente pesquisa teve como objetivo analisar as percepções e formas de atuação de professoras do Ensino Fundamental I diante de situações de bullying escolar. Nesta investigação, de natureza qualitativa, do tipo estudo de caso múltiplo, assumiu-se como procedimentos metodológicos a aplicação de questionários e a realização de entrevistas semiestruturadas junto as professoras de quatro escolas, estando cada uma delas localizadas em diferentes regiões, num município de pequeno porte do interior do Estado de São Paulo. Os resultados apontaram, conforme o relato das professoras, que os pátios das escolas são os locais onde mais ocorrem as manifestações de bullying, seguido das salas de aula. Das situações de intimidação sistemática experienciadas, predominaram as ligadas à estrutura físico-corporal das vítimas. Embora a maioria das participantes tenha mencionado o contato com situações de bullying, na práxis pedagógica e/ou na instituição escolar onde atuam, poucas desenvolveram alguma atividade interventiva, em função de não terem formação ou apoio da gestão escolar para tal.
Execução de Self-Organizing Maps em FPGA aplicada ao cálculo de trajetória de deslocamento de robôs
Authors: Nakamura Kenny Shogo , Santos Alan Belém , De Sousa Miguel Angelo de Abreu
Published: September 2020

A pesquisa tem como objetivo desenvolver e analisar a funcionalidade da técnica de inteligência artificial Self Organizing Maps, aplicada ao cálculo de trajetória de robôs móveis, utilizando o chip FPGA como plataforma de execução. O projeto desenvolvido passou pelas etapas de criação dos ambientes a serem utilizados, a adequação do algoritmo para o objetivo proposto, simulações de desempenho do algoritmo e análise dos resultados obtidos no chip FPGA. A utilização do chip FPGA e a aplicação das técnicas de inteligência artificial se mostram, juntas, promissoras para os desafios enfrentados pela robótica móvel.
A Conceptual Architecture and a Framework for Dealing with Variability in Mulsemedia Systems
Authors: Saleme Estêvão Bissoli , Santos Celso Alberto Saibel , Ghinea George
Published: September 2020

The thesis is within the emerging topic of mulsemedia systems, which encompass audiovisual content associated with multisensory effects, users' quality of experience, and human-computer interaction. It presents a conceptual architecture and a framework that take into account the challenges and requirements for mulsemedia delivery systems identified from the gaps and shortcomings in related work. Furthermore, the work's outcome brings multiple and valuable contributions relying on a complex and solid experimental setup, which have been shared and published in relevant journals and conferences.
(Star, k)-colourings of graphs with bounded treewidth
Authors: Weffort-Santos C. A. , Pedrosa L. L. C.
Published: September 2020

We study a generalization of graph colouring define as follows. Given a graph G, a (star, k)-colouring of G is a colouring c : V(G) → {1, ..., k} such that every colour class induces a star. We propose an O*(2^(O(tw))k^(tw)-time algorithm that decides whether a graph G of treewidth at most tw admits a (star, k)-colouring. This resolves an open problem posed by Angelini et al. in 2017. Our approach can be extended to other defective colouring models.
Conjuntos Dominantes e Dominantes Independentes em Grafos de Petersen Generalizados
Authors: Pereira A. A. , Campos C. N.
Published: September 2020

Um conjunto S ⊆ V (G) é um conjunto dominante se todo vértice de G é um elemento de S ou é adjacente a um elemento de S. Um conjunto dominante independente de G é, ao mesmo tempo, um conjunto dominante e um conjunto independente em G. Neste trabalho, estudamos conjuntos dominantes e conjuntos dominantes independentes dos Grafos de Petersen Generalizados.
Meta-Heurísticas para Geração Automática de Sistemas Corretores de Erros Baseados em Codificação Convolucional
Authors: Muniz Lucas F. , Lintzmayer Carla N. , Fantinato Denis G.
Published: September 2020

Devido ao grande uso de sistemas digitais, o controle de erros sobre os bits é uma tarefa essencial. Códigos convolucionais são códigos corretores de erros amplamente utilizados em várias aplicações devido à sua eficácia. No entanto, o grande número de parâmetros envolvendo sua geração pode gerar um problema de elevada complexidade. Neste trabalho, usamos as meta-heurísticas GA e BRKGA para a busca por sistemas de codificação eficientes, que apresentaram relevantes resultados nos cenários de simulação.
Formulação de fluxo em arcos para problemas de agrupamento capacitado
Authors: Chagas Vítor Gomes , Iori Manuel
Published: September 2020

Neste trabalho, apresentamos uma formulação baseada em modelos de fluxo em arcos, originalmente projetados para problemas de empacotamento, e agora aplicada a problemas de agrupamento. Consideramos os problemas de Correlation Clustering e Graph Partitioning com pesos nos vértices e custo associado a cada cluster utilizado. Discutimos as vantagens de tal formulação comparada a outras estratégias presentes na literatura.
Uma Proposta de Rastreio de Objetos Utilizando Computação em Borda
Authors: Oliveira Fernando , Delatorre Mateus , Reinstein Heberth
Published: September 2020

Muito se tem avançado nos campos da ciência e tecnologia, as pessoas cercam-se por sistema computacionais, os quais as auxiliam em suas rotinas. O presente artigo, apresenta os resultados do desenvolvimento de uma abordagem para detectar e rastrear pessoas na borda. O sistema é executado em uma placa Raspberry Pi 3B e, com apoio de uma câmera monitora o ambiente. Construiu-se uma interface que avalia o fluxo de pessoas que utilizam uma determinada escada de alvenaria. Informações como: calorias gastas, esforço ou tempo de atividade são oferecidos aos usuários em contrapartida pelo uso das escadas.
Como influenciar decisões em ambientes digitais através de nudges? Um mapeamento sistemático da literatura
Authors: Cunha José Adson , Aguiar Yuska Paola  Costa , Pontes Josinaldo , Da Silva Mirelly
Published: September 2020

A arquitetura de escolha consiste em intervenções com o objetivo de influenciar o comportamento das pessoas. Os empurrões, ou nudges, como são comumente conhecidos, representam mudanças no ambiente no qual decisões são tomadas. Com o avanço da tecnologia e sua influência no cotidiano da população, é importante entender quais os potenciais efeitos comportamentais decorrentes do design do sistema. Através de um mapeamento sistemático da literatura, este artigo apresenta um panorama das pesquisas sobre o uso de nudges digitais, contemplando 151 publicações (2006-2020) oriundas de 54 países, sendo a maioria realizada através de experimentos. O princípio de nudge mais pesquisado foi feedback e o campo de atuação predominante foi privacidade.
Plataforma Integrada de Automação para Simulação Completa de Subestações Digitais com Foco em Interoperabilidade e Segurança Cibernética
Authors: Paula Alexandro De Oliveira , Dias Ricardo Vergne , Silva Márcio Pereira , Ribeiro Mauri G. , Nakata Bruno Hideki , Knorst Natasha A. , Souza Jefferson R. , Meneguette Rodolfo I. , Gonçalves Vinícius P. , Rocha Filho Geraldo P.
Published: September 2020

Tendo em vista à atual situação de vulnerabilidade digital dos sistemas supervisórios de energia, presenciada no Brasil e ao redor do mundo, este trabalho desenvolve uma plataforma que simula a implantação de nova arquitetura de automação/proteção, segundo a IEC 61850, em subestações virtuais em laboratório, antes de aplicá-la nas subestações físicas digitalizadas. O objetivo é obter Segurança Cibernética, Integração entre equipamentos de diferentes fabricantes e Gerenciamento de Riscos. A montagem da plataforma, em forma de laboratório, ainda está em fase de avaliação junto às empresas que irão fornecer os equipamentos necessários para a sua concepção. O diferencial deste trabalho está baseado na análise prévia, em ambiente isolado, dos parâmetros da aplicação no comissionamento de uma subestação digital.
A Problem-based Approach to teach physical database design: an experience report
Authors: Borovina Josko João Marcelo
Published: September 2020

This work presents our first experience in applying a Problem-Based Learning approach to improving students’ abilities on how to analyze and evaluate database performance problems. The preliminary qualitative results reveal our approach contribution to students learning process. Additionally, we also discuss key lessons learned and indicate some future areas of improvement.
De Veteranos para os Novatos: Avaliação das Atividades de Recepção aos Calouros Organizado pelo Grupo PETComp
Authors: Pinto Daniel , Chagas Eduarda , Costa Gabriel , Nunes Kennedy , Anchieta Ricardo , Rocha Simara , Paiva Anselmo , Rivero Luis
Published: September 2020

Alunos ingressantes em cursos de ensino superior sentem dificuldade em se adaptar à nova modalidade de ensino. Nesse contexto, o evento da Semana do Calouro é realizado pelos discentes do grupo PET de Ciência da Computação da Universidade Federal do Maranhão acompanhados por professores como uma atividade de integração aos novos discentes do curso de Ciência da Computação. Este artigo relata a experiência de aplicar diversas atividades com o intuito de esclarecer as dúvidas geradas pelo ingresso no novo ambiente, bem como aumentar a visibilidade dos contextos do curso. Ao término das atividades, o feedback dos discentes apontou para a utilidade das mesmas para conhecer as oportunidades dentro da universidade em termos de projetos, pesquisas e áreas de atuação, assim como soluções para problemas que surgiram durante sua execução.
GQM+PA: Um Framework baseado em Goal-Question-Metric e Pesquisa-Ação para Ensino de Medição de Software
Authors: Costa Saori , Araújo Allysson Allex , Coutinho Emanuel , Gomes Francisco , Souza Jerffeson
Published: September 2020

A compreensão prática da medição de software demonstra-se pertinente para conscientização dos alunos sobre a garantia de qualidade. Todavia, alinhar teoria e prática no ensino de tal disciplina reflete-se desafiador, requisitando, assim, metodologias colaborativas e engajadoras. Este estudo propõe um framework, denominado GQM+PA, o qual integra o método Pesquisa-Ação com o processo Goal-Question-Metric para ensino de medição de software. Sob uma perspectiva quali-quantitativa, avaliou-se múltiplos estudos de caso na Universidade Federal do Ceará (Campus Crateús). Resultados revelam que os alunos foram capazes de aprimorar seus conhecimentos e perceber empiricamente o valor da medição de software, incluindo métricas de software e GQM.
TENT: Uma Ferramenta Para Formação de Equipes que Considera Fatores Socioafetivos
Authors: Silva Denini , Barbosa Luís , Oliveira Stenyo , Fagundes Roberta , Santos Wylliams
Published: September 2020

Os aspectos técnicos e de afinidade social são parâmetros comumente utilizados para criação de equipes no contexto acadêmico. No entanto, outros fatores socioafetivos também apresentam resultados satisfatórios quando utilizados na formação das equipes. Essa pesquisa tem como objetivo a criação de uma ferramenta capaz de auxiliar na formação de equipes, considerando tais fatores e suas afinidades. A metodologia de Design Science Research foi adotada para a criação da ferramenta TENT. Diante dos experimentos realizados, as equipes tiveram mais ligações afetivas do que ligações antitéticas. Contudo, percebe-se que a ferramenta forma equipes de maneira que seus integrantes tenham tipos característicos afins, evitando tipos característicos antitéticos.
O Pensamento Computacional no Ensino Superior e seu Impacto na Aprendizagem de Programação
Authors: Da Silva Emanuel Oliveira , Falcão Taciana Pontual
Published: September 2020

A consolidação do Pensamento Computacional (PC) como habilidade essencial do cidadão contemporâneo vem se refletindo em novas diretrizes e referenciais em todos os níveis da educação brasileira. Nos cursos superiores de computação, o desenvolvimento do PC vem se somar às abordagens que visam a superação de dificuldades no ensino e aprendizagem de programação, e a consequente redução da retenção e evasão. Neste artigo, a partir de insights de uma pesquisa de campo exploratória, argumentamos que ainda há muito a debater sobre como integrar o PC aos currículos, em particular dos cursos de Licenciatura em Computação, de forma a contemplar a formação esperada deste educador alinhada às novas tendências, mas também desenvolver sua habilidade de PC, e facilitar a aprendizagem de programação.
Perfil das Egressas dos Cursos de Computação da UNIPAMPA: Uma Análise da Formação Acadêmica e da Atuação Profissional
Authors: Finger Alice Fonseca , Bordin Andréa Sabedra , De Mello Aline Vieira
Published: September 2020

Este trabalho apresenta uma análise da formação acadêmica e atuação profissional das egressas dos cursos de Ciência da Computação (CC) e Engenharia de Software (ES) da UNIPAMPA. Os dados foram coletados através de um questionário elaborado com base em diversas referências. A partir das respostas completas, foi possível definir os perfis das egressas dos cursos, bem como pontuar as similaridades e diferenças mais significativas. Observou-se que egressas de CC tendem a realizar o mestrado acadêmico, enquanto as de ES se inserem imediatamente no mercado de trabalho.
Perfil dos Egressos de Computação do Interior da Amazônia no Mercado de Trabalho
Authors: Nunes Luiz Henrique C. , Reis Josivan R. , Paxiúba Carla M. , Ponte Márcio J. M. , Nascimento Mariana W. B. , Nascimento Roberto  P.
Published: September 2020

Conhecer o perfil dos egressos de computação no Brasil é uma necessidade e também um desafio. Dessa forma, este trabalho visa levantar dados sobre os egressos de computação das Instituições de Ensino Superior (IES) públicas do Oeste do Pará (Universidade Federal do Pará - UFPA e Universidade Federal do Oeste do Pará - UFOPA) e apresentar o perfil desses egressos desde o primeiro curso de tecnologia da região, Tecnólogo em Processamento de Dados (TPD), até os cursos vigentes. O estudo foi realizado através do método de Survey de pesquisa quantitativa, utilizando questionário. O artigo apresenta ainda um recorte dos ingressos por gênero.
Mecanismo de Proteção em SDM-EON Ciente da Prioridade de Tráfego
Authors: Lopes Rafael , Rosário Denis , Cerqueira Eduardo , Oliveira Helder
Published: September 2020

With the increase in the number of devices connected to the internet, caused mainly by the rise of the internet of things paradigm, the core of the network tends to suffer from the scarcity of resources, which, in turn, causes a higher rate of connection blocking. This article proposes a algorithm for routing, spectrum and core allocation for spatial-division multiplexing elastic optical networks that uses classes of service with different levels of protection quality to increase the acceptance rate of requests, guaranteeing 100% protection against failures to higher priority flows. The results demonstrate the effectiveness of the proposed algorithm in establishing connections with high priority compared to others found in the literature.
Paralelização e Otimização da Simulação Discreta de Eventos em Processador Multicore
Authors: Gehlen Tobias , Moreano Nahri
Published: September 2020

A simulação é uma maneira de estudar o comportamento de sistemas físicos, em casos onde a solução em laboratório ou analítica são inviáveis. A paralelização de sua execução permite a modelagem de sistemas mais complexos e agiliza suas soluções. Entretanto, a simulação paralela dificulta o respeito às relações de causalidade do sistema físico, acarretando um overhead significativo para assegurar a evolução correta da simulação. Este trabalho apresenta o desenvolvimento de um simulador paralelo de eventos discretos em uma arquitetura multicore de memória compartilhada. Uma extensa avaliação experimental de desempenho analisa questões como a estrutura de dados adotada para a fila de eventos, o impacto da aplicação (topologia da rede de filas e carga de trabalho) na extensão da simulação, a exploração de lookahead da aplicação, as técnicas de avanço do horizonte da simulação e de suspensão do mecanismo gerenciador de threads, e por fim, desempenho e escalabilidade do simulador paralelo. O simulador paralelo obteve um speedup de até 7,01 em relação ao simulador sequencial, em um processador com quatro núcleos físicos e capaz de executar oito threads simultaneamente.
Análise de um Serviço Virtual de Armazenamento que Explora Classes de Objetos na Nuvem e Padrões de Acesso
Authors: Ribeiro Samuel De Oliveira , Gonçalves Glauber Dias , Silva Francisco Airton , Vieira Alex , Almeida Jussara
Published: September 2020

Serviços de armazenamento de dados geralmente utilizam uma infraestrutura terceirizada de nuvem. Os dados são armazenados como objetos em diferentes classes da infraestrutura da nuvem, o que impacta diretamente no custo do provedor de serviço. Nesse sentido, investigamos um aspecto chave para serviços de armazenamento ``virtual'': a predição da frequência de acessos aos dados para alocá-los em classes de armazenamento adequadas. Com base no padrão de acesso aos dados dos usuários, propomos um arcabouço que prediz, dinamicamente, as classes adequadas para armazenar dados (objetos) em um futuro próximo. Avaliamos a eficiência desse arcabouço através de simulações baseadas em traços de acesso a dados de um dos serviços mais populares de armazenamento em nuvem, o Dropbox. Nossos resultados mostram uma acurácia de 81% na predição e uma economia de até 14% nos custos de armazenamento, aplicando a melhor qualidade de serviço no acesso aos dados.
Characterizing Protection Effects on Network Epidemics driven by Random Walks
Authors: Souza Ronald , Figueiredo Daniel
Published: September 2020

Protection effects (PFx) denote protective measures taken by individuals (such as to wear masks and wash hands) upon their risk-perception towards an ongoing epidemic outbreak. The holistic force produced may fundamentally change the course of a spreading, with respect to both its reach and duration. This work proposes a model for PFx on network epidemics where nodes are sites mobile-agents may visit. Risk aversion is encoded as random-walks biased to safe sites. Assuming the network is a complete graph, the model is analyzed and framed as a classical SIS. We find a regime under which PFx preclude endemic steady-states upon arbitrarily large rates for both walk and transmissibility. Simulation results support our theoretical findings.
Avaliação Experimental de Replicação em Banco de Dados para Recuperação de Desastres
Authors: Medeiros Wilson , Mendonça Júlio , Alves Gabriel , Andrade Ermeson
Published: September 2020

Os sistemas de TI são essenciais para as operações de qualquer negócio moderno. Tais sistemas precisam suportar as operações de suas empresas correspondentes sob quaisquer condições. Estratégias de Recuperação de Desastres (RD) têm sido implementadas para auxiliar as organizações a mitigar falhas inesperadas e reduzir gastos desnecessários. No entanto, no melhor do nosso conhecimento, nenhum trabalho analisa experimentalmente a replicação de dados na camada de banco de dados (BD) com foco em estratégias de RD. Desta forma, este trabalho avalia a replicação em BDs relacionais como uma forma de implementar uma solução de RD. Para isso, nós usamos um testbed real em um ambiente de nuvem pública para executar experimentos extensivos visando a implementação da replicação fornecida pelo MySQL, considerando vários cenários no contexto de RD. Nossos resultados mostram como o tempo de resposta, o Recovery Point Objective (RPO) e o Recovery Time Objective (RTO) variam de acordo com o tamanho dos dados replicados, o tipo de sincronização (ex.: assíncrona ou semissíncrona) e a configuração dos servidores slaves. Este trabalho pode auxiliar os coordenadores de RD ou indivíduos a decidir qual configuração de replicação de banco de dados para recuperação de desastres é melhor para seu ambiente de trabalho.
Regenbogenkompetenz
Authors: Ulrich Markus
Published: September 2020

Wann haben Sie sich eigentlich das letzte Mal geoutet? Wenn Sie heterosexuell sind, werden Sie mit der Frage vermutlich nicht viel anfangen können. Obwohl heterosexuelle Menschen es ständig tun…
Frühe Hilfen und geschlechtliche Vielfalt
Authors: Frank Katrin , Schabram Greta
Published: September 2020

Die geschlechtliche Identität ist für jeden Menschen von fundamentaler Bedeutung und eine höchstpersönliche Angelegenheit. Sie gilt es zu schützen - und zwar von Geburt an. Die Angebote der Frühen Hilfen können für Kleinkinder und ihre Eltern eine wichtige Stütze sein. Sie können verhindern, dass insbesondere Eltern verfrüht Entscheidungen treffen, die sie später bitter bereuen und die ihr Kind das Leben lang begleiten.
Selbstbestimmte Teilhabe älterer Menschen durch ehrenamtliches Engagement: Chancen und Herausforderungen
Authors: Rießen Anne van , Henke Stefanie
Published: September 2020

Soziale Vielfalt schließt auch die Selbstbestimmung und Teilhabe Älterer ein. Nachfolgend wird erörtert, unter welchen Bedingungen ehrenamtliche Nachbarschaftshilfe diese unterstützen kann. Dazu wird anhand der Ergebnisse des Projektes »Ehrenamt der Zukunft: Förderung der Selbstbestimmung und Teilhabe Älterer im Quartier« (EZuFöST) dargelegt, inwiefern sich eine konsequente Orientierung sowohl an den älteren Menschen als auch an den Ehrenamtlichen selber als entscheidende Bedingung für die zukünftige Ausrichtung ehrenamtlicher Nachbarschaftshilfe erweist.
Dynamic Link from Liftoff to Final Orbital Insertion for a MEO Space Vehicle
Authors: K. Kreng Jack , Q. Chen Gleason
Published: September 2020

During the entire launch sequences from liftoff to final orbital insertion of a space vehicle (SV), adequate link requirements are to be maintained for telemetry, tracking, and command (TT&C) for uplink and downlink services, from launch vehicle (LV) and SV to ground stations (GS). A successful space vehicle launch required adequate link coverage with good radio frequency (RF) performance. The chapter is an extension of the IEEE/Aerospace Conference 2019 paper entitled Dynamic Link Analysis and Application for a MEO Space Vehicle published by the authors. The emphasis in this chapter is on the addition of the three distinctively different tracking waveforms and their associated links, used from liftoff to final orbital insertion. This chapter will describe the three required dynamic link analyses (DLA) to cover (a) the LV link from liftoff to its end of line of sight (LOS), (b) the LV link from LOS to Tracking and Data Relay Satellite System (TDRSS) at beyond line of sight (BLOS), and (c) the final tracking link using Space-to-Ground Link Subsystem (SGLS) or non-SGLS (NSGLS) link for the earliest or best separation time of the SV from the LV. The chapter discusses the concept of the dynamic link analysis, SV antenna switching schedule, recommended SV separation time, as well as the performance for different launch scenarios within the 24-h launch window. Topics include antenna patterns, launch trajectories, elevation angle and clock and cone angle geometry, and dynamic link budget.
Continuous Improvement
Authors: Carvalho Dinis
Published: September 2020

The principles and concepts originated mainly in Toyota in the 1950s and now presented in models such as Lean Thinking, Shingo Model, and The Toyota Way itself are powerful ideas to bring success to organizations, but the path is not easy. In theory, there are two main features to reach effective and sustainable success, the right vision (True North) and continuous improvement toward that vision. Those two main features are as easy to understand as they are difficult to accomplish. Even when senior leaders have full understanding and belief, the effective implementation on a daily basis is an enormous challenge. This chapter will show how organizations can implement sustainable and stable continuous improvement systems. It will describe the principles that must be followed, the necessary requirements that must be fulfilled, the way the organizations must be structured in teams, the necessary routines, and all the practical steps necessary to reach that sustainable and stable continuous improvement system.