bluuebunny/crossref_metadata_2025 huggingface dataset:
The Importance of Ionic Liquids and Applications on Their Molecular Modeling
Authors: Celik Sefa , Albayrak Ali Tugrul , Akyuz Sevim , Ozel Aysen E.
Published: April 2019

Ionic liquids are salts with melting points generally below 100 °C made of entirely ions by the combination of a large cation and a group of anions. Some ionic liquids are found to have therapeutic properties due to their toxic effects (e.g., anticancer, antibacterial, and antifungal properties). The determination of the most stable molecular structures, that is, the lowest energy conformer of these ionic liquids with versatile biological activities, is of particular importance. Density function theory (DFT) based on quantum mechanical calculation method, one of the molecular modeling methods, is widely used in physics and chemistry to determine the electronic structures of these stable geometries and molecules. With the theory, the energy of the molecule is determined by using the electron density instead of the wave function. It is observed that the theoretical models developed on the ionic liquids in the literature are in agreement with the experimental results because of electron correlations included in the calculation.
Cheaters Beware
Authors: Velliaris Donna M. , Pierce Janine M.
Published: April 2019

This descriptive chapter tackles the issue of ‘preventing' academic misconduct via effective assessment design. A dearth of literature is focused on ‘detecting' plagiarism, but assessment (re)design can help ‘prevent' the pervasiveness of ‘cheating' if tasks are relevant, authentic, real-world, educative, and career-focused from the outset. While contemporary society is demanding and complex, many educational assessment practices today remain unimpressively straightforward. Academic faculty are central to confronting cheating. In this chapter, the authors focus on a three-pillar system that empowers higher education institutions (HEIs) to better prevent malpractice rather than reacting to it afterwards. The aim of this chapter is to provide a descriptive investigation into why assessment is so important in the fight against academic misconduct, and a three-pillar approach to bolster assessment practices that will help minimize opportunities for students to engage in academic offences. Within this presentation are included author narratives that will help readers understand the many and varied ways tertiary-level students can challenge faculty assessment design.
Enhance Active Learning in Higher Education by Using Mobile Learning
Authors: Ragonis Noa , Dagan Osnat
Published: April 2019

The quality of teaching in higher education is central for preparing students for their future academic and work demands. This includes the integration of information and communication technologies, since it has the potential to enhance teaching and learning processes and is thought improve both the understanding of content knowledge and the acquisition of relevant 21st-century skills. In particular, the use of mobile devices enables active learning at anytime and anywhere. This chapter describes a project of faculty development for integrating mobile learning (ML) into academic studies to accomplish pedagogical goals, as implemented at Beit Berl College, Israel. The chapter presents fundamental guidelines and principles of integrating ML into academic practices; Nine ML workshops that were developed and implemented; A detailed description of one workshop including the learning materials used; and Evaluation of the implementation. A summary of lessons learned from the implementation experience and further recommendations are presented.
Mobile Technologies for Making Meaning in Education
Authors: Coffman Teresa L. , Klinger Mary Beth
Published: April 2019

This chapter examines the use of mobile technologies to integrate technology into the classroom environment so that students can experience real-world learning. The use of augmented reality is emphasized to enhance the learning process and provide engaging and authentic student-centered experiences. Using augmented reality, personalized learning is possible that encourages a constructivist approach and where the learning process is the main focus. Students are able to construct knowledge through augmented experiences that support the curricular content and then share this newfound knowledge with others. The use of augmented reality as a cognitive tool can connect learning and allow students to work collaboratively with deeper and higher-level meaning as a result.
The Role of a WhatsApp Group of a Professional Learning Community of Chemistry Teachers in the Development of Their Knowledge
Authors: Blonder Ron , Waldman Ruth
Published: April 2019

The authors analyze chemistry teachers' discourse in a WhatsApp group. This online communication platform is used for continually studying the communication behavior of leading chemistry teachers who are members of a professional learning community (PLC). They describe the network of chemistry teachers' PLC in Israel, which provides the context for the study. WhatsApp enables sustained ongoing, intensive interaction, and sharing of knowledge that is practical, directly related to the members' needs, and is participant driven and constructivist in nature. A theoretical perspective of teachers' knowledge and professional development (PD) was developed in 2015 by Gess-Newsome, which was applied to examine the mechanism underlying teachers' knowledge development.
Culture and Context Impact on Mobile Tech Application in Organizational Learning
Authors: Chen Yun , Zhang Yunpu
Published: April 2019

While the significance of mobile technologies to support deep learning has been recognized, the impact factors of applying these technologies into various organizational learning environments still remain poorly understood. This chapter has explored the community of inquiry (CoI) framework as the lens to understand culture and context impact on mobile technology application to facilitate learners' engagement and educational experiences. Two sharp-contrast case studies are selected to provide the practical insight of the research. Results infer that usage of mobile technology has a positive impact on organizational learning, which leads to greater learning engagement as long as culture and context are considered as key issues to select appropriate mobile technologies. These factors decide the mobile native functions, delivery platforms, and provided learning contents, which are key elements in the proposed CoI framework in the context of m-learning.
The Use of Mobile Technologies by Immigrant Adolescents in Coping With the New Language and With Their Formal Studies
Authors: Zilka Gila Cohen
Published: April 2019

In light of the extensive use of mobile technologies by adolescents, the chapter examined the usability of mobile technologies for new immigrant adolescents in supporting their absorption process in the new country, acquiring the new language, and coping with their studies. The study also sought to determine what the adolescents' most meaningful experiences were that mobile technologies made possible in the course of their absorption in the new country. Participating in the study were 125 new immigrant adolescents, who have resided in Israel between 6 and 12 months. This is a qualitative study. The study included (1) interviews before completing an open questionnaire, (2) completion of an open-question questionnaire, and (3) personal interviews that took place after the questionnaire was completed. Participants reported that thanks to mobile technologies they were able to integrate into the daily life of their new environment. Translation software, databases, various applications, and social network groups have helped satisfy their needs, assisted in real time with difficulties they encountered, and helped create a sense of social connection and belonging.
Time for a Change
Authors: Fishelson Rotem Israel
Published: April 2019

In recent years, the use of smartphones by people with intellectual disabilities (ID) has increased, leading to the development of applications designed to ease and improve their lives and independence, and help them integrate into society. Designing applications tailored to the needs of these users is complex, particularly in terms of accessibility and usability. This chapter presents a case study of the design and development process of a dedicated application aimed at helping people with mild ID in handling cash transactions. The chapter explores the design principles of mobile interfaces for people with ID. It introduces the use of the design thinking methodology, which focuses on user-centered design and helps gain an in-depth knowledge of the end users and their needs. Based on the performed user research, recommendations for the design of such applications are highlighted.
Consumer Purchase Preference for the Perception of Quality of Perishable Products in a Smart City
Authors: Rebollar-Xochicale Iván Alonso , Maldonado-Azpeitia Fernando
Published: April 2019

Freshness, flavor, presentation, and nutritional value of fruits and vegetables deteriorate as time passes. That is why the correct implementation of supply chains is a subject of great interest for companies dedicated to the rotation of food marketing. Consumers play a particularly important role: the interaction between the retailer and the consumer determines the waste of food along the supply chain. The consumer's choice behavior and the perception of what is acceptable (or not) affect the management of the offer in the different points of sale dedicated to this line of business, as well as the aesthetic standards to be applied when distributing the products. This chapter explores consumer purchase preference for the perception of perishable products in a smart city.
A Fuzzy Logic Classifier for the Three Dimensional Bin Packing Problem Deriving From Package Delivery Companies Application
Authors: Hernández Paula Hernández , Castillo-García Norberto , Larkins Edilberto Rodríguez , Ruiz Jorge Gilberto Guerrero , Díaz Selene Valeria Morales , Resendiz Erick Sobrevilla
Published: April 2019

One of the most common operations in warehouses of package delivery companies (e.g., UPS or FedEx) is to pack the products in trucks in order to locally deliver them to the customers. The products are generally packed in rectangular boxes of different dimensions. An efficient assignment of boxes to delivery trucks must consider the minimization of the number of trucks required. Thus, a considerable amount of fuel is saved, and hence, the delivery time and pollution are reduced. This efficient assignment can be viewed as an application of the well-known three-dimensional bin packing problem (3D-BPP). In this chapter, the authors propose a methodology based on fuzzy logic classification (FLC) to solve 3D-BPP. The FLC assigns a class to each box to be delivered according to their relative proximity. The goal is to contiguously assign the boxes whose destinations are as close as possible.
Product Prediction and Recommendation in Sustainable E-Commerce Using Association Rule Mining and K-Means Clustering
Authors: Thakur Subro SantiRanjan , Bandyopadhyay Soma , Mandal Jyotsna Kumar
Published: April 2019

The tremendous growth of customers and products in recent years poses some key challenges for recommender systems. These are producing high quality recommendations and performing many recommendations per second for millions of customers and products. New recommender system technologies are needed that can quickly produce high quality recommendations, even for very large-scale problems. The authors address the performance issues by scaling up the neighborhood formation process through the use of clustering techniques. By using association rule learning, it has been observed that customers who purchase the items t-shirt and jeans have an increasing trend to buy shoes, etc. These systems, especially the k-means clustering-based ones, are achieving widespread success in e-commerce nowadays, and the results are encouraging (i.e., the category silver is preferable as purchasing amount is concerned). Enterprises can use the model to predict the stock and customer for their business sustainability.
Digital Image Classification Techniques
Authors: Shrivastav Utkarsh , Singh Sanjay Kumar
Published: April 2019

Image classification is a technique to categorize an image in to given classes on the basis of hidden characteristics or features extracted using image processing. With rapidly growing technology, the size of images is growing. Different categories of images may contain different types of hidden information such as x-ray, CT scan, MRI, pathologies images, remote sensing images, satellite images, and natural scene image captured via digital cameras. In this chapter, the authors have surveyed various articles and books and summarized image classification techniques. There are supervised techniques like KNN and SVM, which classify an image into given classes and unsupervised techniques like K-means and ISODATA for classifying image into a group of clusters. For big images, deep learning networks can be employed that are fast and efficient and also compute hidden features automatically.
Intelligent Medical Diagnostic System for Diabetes
Authors: Singla Jimmy
Published: April 2019

In this chapter, the neuro-fuzzy technique has been used for the diagnosis of different types of diabetes. It has been reported in the literature that triangular membership functions have been deployed for Mamdani and Sugeno fuzzy expert systems that have been used for diagnosis of different types of diabetes. The Gaussian membership functions are expected to give better results. In this context, Gaussian membership functions have been attempted in the neuro-fuzzy system for the diagnosis of different types of diabetes in the research work, and improved results have been obtained in terms of different parameters like sensitivity, specificity, accuracy, precision. Further, for the comparative study, the dataset used for neuro-fuzzy expert system developed in this research work has been considered on Mamdani fuzzy expert system as well as Sugeno fuzzy expert system, and it has been confirmed that the result parameters show better values in the proposed model.
Chimeric Hemagglutinin-Based Influenza Virus Vaccines Induce Protective Stalk-Specific Humoral Immunity and Cellular Responses in Mice
Authors: Choi Angela , Bouzya Badiaa , Cortés Franco Klaus-Daniel , Stadlbauer Daniel , Rajabhathor Arvind , Rouxel Ronan N , Mainil Roland , Van der Wielen Marie , Palese Peter , García-Sastre Adolfo , Innis Bruce L , Krammer Florian , Schotsaert Michael , Mallett Corey P , Nachbagauer Raffael
Published: April 2019

The high variation of the influenza virus hemagglutinin (HA), particularly of its immunodominant head epitopes, makes it necessary to reformulate seasonal influenza virus vaccines every year. Novel influenza virus vaccines that redirect the immune response toward conserved epitopes of the HA stalk domain should afford broad and durable protection. Sequential immunization with chimeric HAs (cHAs) that express the same conserved HA stalk and distinct exotic HA heads has been shown to elicit high levels of broadly cross-reactive Abs. In the current mouse immunization studies, we tested this strategy using inactivated split virion cHA influenza virus vaccines (IIV) without adjuvant or adjuvanted with AS01 or AS03 to measure the impact of adjuvant on the Ab response. The vaccines elicited high levels of cross-reactive Abs that showed activity in an Ab-dependent, cell-mediated cytotoxicity reporter assay and were protective in a mouse viral challenge model after serum transfer. In addition, T cell responses to adjuvanted IIV were compared with responses to a cHA-expressing live attenuated influenza virus vaccine (LAIV). A strong but transient induction of Ag-specific T cells was observed in the spleens of mice vaccinated with LAIV. Interestingly, IIV also induced T cells, which were successfully recalled upon viral challenge. Groups that received AS01-adjuvanted IIV or LAIV 4 wk before the challenge showed the lowest level of viral replication (i.e., the highest level of protection). These studies provide evidence that broadly cross-reactive Abs elicited by cHA vaccination demonstrate Fc-mediated activity. In addition, cHA vaccination induced Ag-specific cellular responses that can contribute to protection upon infection.
Aeroelastic Response Analysis of Composite Blades Based on Geometrically Exact Beam Theory
Authors: Shang Lina , Xia Pinqi H. , Hodges Dewey H.
Published: April 2019

The geometrically exact nonlinear beam theory consisting of the latest version of two-dimensional variational asymptotic beam sectional analysis (VABS) and one-dimensional geometrically exact beam theory (GEBT) has been widely used for the structural analysis of composite beam structures.
The theory can be used for establishing the aeroelastic model of composite blades undergoing large deflections to improve computational accuracy and efficiency. In this paper, the theory has been extended from structural analysis to aeroelastic analysis of blade, and an accurate and efficient
method for aeroelastic response analysis of composite blades has been presented based on the theory and unsteady aerodynamic model. The geometrically exact nonlinear equations of motion and the latest VABS are used to deal with one-dimensional beam analysis and the structural property of blade
cross section, respectively. The Peters–He finite state dynamic wake model and the Peters finite state airloads theory are used to calculate the induced velocity and blade airloads, respectively. The presented method has been used to analyze the aeroelastic responses of composite blades,
and its accuracy has been verified by experimental data. The influence of transverse shear deformation on the aeroelastic response of composite blades was also investigated, indicating that the transverse shear deformation has a nonnegligible effect on aeroelastic response analysis of hingeless
composite rotors in hover.
Ação afirmativa para a agricultura familiar no Curso Técnico em Agropecuária do Instituto Federal Catarinense – Campus Concórdia: origem e motivação para sua criação
Authors: Marchesan Francieli , Oliveira Oséias Santos de
Published: April 2019

As ações afirmativas geram controvérsias na sociedade. No caso da cota da agricultura familiar, não há uma aceitação efetiva pela comunidade acadêmica e geral na reserva de vagas para este grupo social. Dessa forma, têm-se como objetivos: analisar a finalidade das ações afirmativas; e, descrever a origem e motivação para a criação da cota da agricultura familiar para o curso Técnico em Agropecuária do IFC/Campus Concórdia. A metodologia utilizada foi um estudo de caso, com pesquisa bibliográfica e análise documental. Como resultado, verificou-se que esta cota foi criada em atendimento ao acordo fixado com a SETEC/MEC. Aduziu-se que a opção pela agricultura familiar visou atender às realidades locais dos campi e aos compromissos institucionais com a justiça social, inclusão de grupos em desvantagem social, entre outros. Considera-se que as ações afirmativas representam uma ferramenta capaz de reduzir as desigualdades no acesso ao ensino público, podendo adequar-se às necessidades das instituições.
O princípio constitucional da impessoalidade e a seleção por competências nas universidades públicas federais brasileiras
Authors: Ribas Ruy Tadeu Mambrini , Souza Gabriela Mattei de , Silva Cristiane Laurentino , Dalmau Marcos Baptista Lopez
Published: April 2019

O presente estudo realizou uma análise da compatibilidade do princípio constitucional da impessoalidade com a utilização da seleção de pessoas por competências no âmbito das universidades públicas federais. Por meio do levantamento teórico sobre os temas abordados, foi possível realizar um raciocínio dedutivo sobre estes institutos. Por meio de uma pesquisa de natureza básica, com objetivo exploratório e coleta de dados por meio de pesquisa bibliográfica e documental, pode-se concluir que essa compatibilidade existe, porém não de maneira absoluta, destacando como um dos maiores entraves a utilização pelos gestores públicos de práticas mais objetivas e alinhadas com uma interpretação mais conservadora da legislação. Simultaneamente, também foi possível identificar experiências e episódios vanguardistas que comprovam que a aplicabilidade do sistema depende mais de coragem administrativa, vontade política e sofisticação hermenêutica do que de mudanças extrínsecas às instituições.
Proposta de indicadores de cooperação na gestão compartilhada de resíduos sólidos
Authors: Alves Silva Greg Jordan , Pessali Hiáscar Fialho
Published: April 2019

A Política Nacional de Resíduos Sólidos (BRASIL, 2010) orienta que governos, empresas e sociedade civil se responsabilizem cooperativamente pelos planos de gerenciamento. Nesse sentido, o trabalho que segue tem como intuito propor um instrumento integrado de avaliação para mensurar e classificar o grau de cooperação entre atores envolvidos na gestão compartilhada de resíduos sólidos. Baseando-se num cruzamento entre a literatura sobre cooperação na gestão pública e os debates teóricos e legais sobre a questão dos resíduos sólidos, foram elaborados 19 indicadores divididos em quatro dimensões da cooperação: cognitiva, operacional, relacional e político-institucional, utilizáveis tanto para avaliação em níveis locais de gestão (municípios, microrregiões, etc.) quanto para avaliação dos responsáveis (atores governamentais, atores sociais e atores econômicos). Os indicadores propostos fornecem aos gestores uma visão mais clara sobre a estrutura de gestão compartilhada de resíduos sólidos, permitindo que possam ser planejadas ações pontuais a fim de garantir a parceria entre os setores.
pH-dependent production of molecular chlorine, bromine, and iodine from frozen saline surfaces
Authors: Halfacre John W. , Shepson Paul B. , Pratt Kerri A.
Published: April 2019

Abstract. The mechanisms of molecular halogen production from frozen saline surfaces
remain incompletely understood, limiting our ability to predict atmospheric
oxidation and composition in polar regions. In this laboratory study,
condensed-phase hydroxyl radicals (OH) were photochemically generated in
frozen saltwater solutions that mimicked the ionic composition of ocean
water. These hydroxyl radicals were found to oxidize Cl−, Br−, and
I−, leading to the release of Cl2, Br2, I2, and IBr. At
moderately acidic pH (buffered between 4.5 and 4.8), irradiation of ice
containing OH precursors (either of hydrogen peroxide or nitrite ion)
produced elevated amounts of I2. Subsequent addition of O3
produced additional I2, as well as small amounts of Br2. At lower
pH (1.7–2.2) and in the presence of an OH precursor, rapid dark conversion
of I− to I2 occurred from reactions with hydrogen peroxide or
nitrite, followed by substantial photochemical production of Br2 upon
irradiation. Exposure to O3 under these low pH conditions also
increased production of Br2 and I2; this likely results from
direct O3 reactions with halides, as well as the production of
gas-phase HOBr and HOI that subsequently diffuse to frozen solution to react
with Br− and I−. Photochemical production of Cl2 was only
observed when the irradiated sample was composed of high-purity NaCl and
hydrogen peroxide (acting as the OH precursor) at pH = 1.8. Though
condensed-phase OH was shown to produce Cl2 in this study, kinetics
calculations suggest that heterogeneous recycling chemistry may be equally
or more important for Cl2 production in the Arctic atmosphere. The
condensed-phase OH-mediated halogen production mechanisms demonstrated here
are consistent with those proposed from recent Arctic field observations of
molecular halogen production from snowpacks. These reactions, even if slow,
may be important for providing seed halogens to the Arctic atmosphere. Our
results suggest the observed molecular halogen products are dependent on the
relative concentrations of halides at the ice surface, as we only observe
what diffuses to the air–surface interface.
Elegibilidad política y procesos de paz: un análisis a partir del caso colombiano
Authors: Celemin Caicedo Yenny Andrea , García Sergio Javier
Published: April 2019

El Acuerdo de Paz celebrado entre el Estado colombiano y las Fuerzas Armadas Revolucionarias de Colombia (FARC) ha redefinido una de las causales de mayor estabilidad en el régimen de inhabilidades para hacerse elegir como representante en Colombia. Este régimen imponía como obstáculo para ostentar la calidad de elegido el haber sido sujeto de sanciones a penas privativas de la libertad por la comisión de delitos que no tuvieran el carácter de delitos políticos o culposos. Sin embargo, a partir del Acuerdo de Paz y de las normas que lo han venido desarrollando se ha facultado a los excombatientes y a otros actores del proceso para el ejercicio del sufragio activo. Esta modificación hace parte de los arreglos para compartir el poder que se crearon como consecuencia de este proceso de negociación. El presente texto tiene el propósito de describir y analizar estas modificaciones y de poner en evidencia algunos de los problemas interpretativos producidos por estos cambios.
Avaliação da contaminação microbiana em fitas e resinas identificadoras de instrumental cirúrgico
Authors: Bruna Camila Quartim de Moraes , Almeida Alda Graciele Claudio dos Santos , Graziano Kazuko Uchikawa
Published: April 2019

Objetivo: Avaliar a esterilidade de fitas coloridas e resinas utilizadas como identificadores em instrumentos cirúrgicos. Método: Foi realizado umestudo experimental, laboratorial, que utilizou uma amostra de 140 instrumentos cirúrgicos diversos, de aço inoxidável, identificados com fita ou resina,doados voluntariamente por Centros de Material e Esterilização para a presente investigação. As amostras foram inoculadas diretamente em trypticasesoy broth (TSB) e em tioglicolato de sódio e incubadas por 14 dias. Resultados: Foi observado crescimento positivo em três amostras de fita e nenhumcrescimento foi observado nas amostras de resina. Conclusão: Marcadores de instrumental do tipo fita albergaram microrganismos nos instrumentaisavaliados, possivelmente protegidos por biofilme.
Influence of Air Temperature in the Emission of Nodes, Ramifications and Flowers in Hybrids of Watermelon (Citrullus lanatus)
Authors: Schmidt Denise , Nora Francisco E. Dalla , Fontana Daniele C. , Paula Gizelli M. de , Thiesen Leonardo A. , Caron Braulio O.
Published: April 2019

The culture of watermelon develops mainly under conditions of high temperature, being the temperature an element that directly affects the emission of vegetative and reproductive organs. There are no reports of the accumulation of temperature required for emission of branches, nodes and flowers. Thus, this experiment aimed to evaluate the rate of emission of vegetative and reproductive organs for hybrids of watermelon in relation to air temperature, using the hybrids of Manchester and Top Gun watermelons. The experiment was conducted in Federal University of Santa Maria, campus Frederico Westphalen-RS, from September to December 2014. Evaluations were conducted at every two days and it was determined the variables: nodes emission, final number of nodes on the main stem, number of primary and secondary ramifications and number of staminate flowers and open pistillate flowers related to accumulated thermal sum for the emission of such organs, and the ratio between the number of staminate flowers to the pistillate. The hybrids of watermelon present for plastochron of 18.8 °C node day, final number of nodes of the main ramification of 43 and number of primary and secondary ramifications of eight and 20, respectively. For the emission of staminate and pistillate flowers the hybrids need an accumulation 10.5 and 46.7 °C day, respectively. The number of staminate and pistillate flowers is 52 and nine, respectively, and the ration between flowers of 6.6:1.
Fertilization With Nitrogen, Phosphorus and Potassium on Soil Fertility and Nutritional Status of Yellow Passion Fruit Plants
Authors: Miyake Rodrigo T. M. , Takata William H. S. , Narita Nobuyoshi , Creste José E.
Published: April 2019

The research had as objective to study the influence of the doses of nitrogen, phosphorus and potassium on soil fertility and nutritional status of yellow passion fruit plants. The experimental design was in randomized blocks in an incomplete fractioned factorial 1/2 (4 × 4 × 4), with four doses of N (150, 300, 600 and 1200 Kg-1 ha-1 yr-1 N); four doses of P2O5 (200, 400, 800 and 1600 kg-1 ha-1 yr-1) and four doses of K2O (100, 300, 500 and 700 kg-1 ha-1 yr-1). The fertilizers used were the ammonium nitrate = 32% N; triple superphosphate = 44% P2O5 and potassium chloride = 60% K2O. In the fertility of the nitrogen fertilization increased the content of phosphorus and sulfur. The doses of P2O5 increased the concentration of P in the soil. The doses of K2O influenced the increase in the content of K in the soil in the harvest 2013/2014. There was an interaction of the doses of N and K2O in the availability of K in the soil in the harvest 2012/13 with the maximum levels of K, in the doses of 200-400 kg N ha-1 and 600 to 700 kg ha-1 of K2O. In the nutritional state the yellow passion fruit plants was influenced by the doses of N for the sulfur content of the leaves. The maximum content of S leaf concentration of 3.63 g kg-1 was obtained in the dose estimated at 1120 kg ha-1 of P2O5.
Preparation of Sweet Potato Chips by Combined Method in Different Thicknesses
Authors: Oliveira Silvana N. , Cavalcanti Mata Mário E. R. M. , Duarte Maria E. , Filho Raimundo Bernadino , Rosal Andréia G. C. , Camelo Marteson C. S. , Lisboa Cícera G. C. , Sousa Alisson B. B. , Santiago Vanessa M. S.
Published: April 2019

The objective of this research was to prepare sweet potato chips (Ipomoea batatas L.) in three different thicknesses (0.75, 1.25 and 1.75 mm) using a combined oven drying and frying process at three different temperatures (60, 70 and 80 °C) and to evaluate its centesimal composition, water content and texture (rupture resistance). The water and ash contents increased as the thickness increased and the opposite effect was observed for the lipids that reduced with increasing thickness. For the absorption of fat and calories, the chips presented varied values that can be attributed to the fact that the chips did not undergo the process of exhaustion after the frying. The highest values of rupture resistance (RR) were observed for the chips of 1.75 mm and the absorption of fat and water content interfered directly in this resistance. The sweet potato chips with lower caloric value were those that had drying at 60 °C in the thicknesses of 0.75 and 1.75 mm, however the best sample were chips with 0.75 mm thickness by the drying treatment at 60 °C combined with frying, taking into account the values of water content, calories and fracture.
Structuring of a Haplortox by Cover Crops and Their Effects on the Yield of Soybean Grains
Authors: Ruffato Guilherme Gabriel , Secco Deonir , Zanão Junior Luiz Antônio , Tokura Luciene Kazue , Marins Aracéli Ciotti de , Villa Bruna de , Miranda Amauri Ghellere Garcia , Chang Pablo , Roehrs Simone Andreia , Savioli Matheus Rodrigues , Magalhães Camila Nakoneczny , Lima Pedro Alexandre Develen Cardoso de , Nascimento Laís Fernanda Juchem do
Published: April 2019

The intense agricultural machinery traffic over the plantation ground can lead the erosion and growth difficulty. The goal of this study was to evaluate the soya bean yield after the implantation of species named “recoverable”, of soil structure. The experiment was developed in plots of 20 m × 25 m, located in the Agronomic Institute of Parana (IAPAR), in Santa Tereza do Oeste, Paraná. The plots were cultivated by direct sowing of the following species, considered as treatments: sunn hemp (Crotalaria juncea), rattlebox (Crotalaria spectabilis), velvet bean (Mucuna aterrima), pearl millet (Pennisetum glaucum), pigeon pea (Cajanus cajan), dwarf pigeon pea (Cajanus cajan) beside them no-tillage and no-cover crop planting traditional system (control). Soil samples were collected from 0-10 cm, 10-20 cm, and 20-30 cm-layers with 4 repetitions on each treatment. Soil density and porous soil space were also determined. The plot yield of soybean grains was evaluated over an area of 4.5 m2 for each treatment and grain moisture corrected to 13%. The treatments’ mean yields were compared using the Tukey test at 5% probability. The dwarf pigeon pea and the rattlebox were the most efficient cover crops in the reduction of soil bulk density in 0-10 and 10-20 cm depths. The soybean grain yield did not differ between the evaluated treatments, possibly due to the good precipitation conditions during the soybean growing cycle.
Aqueous Extracts of Species of the Genus Campomanesia (Myrtaceae) Affect Biological Characteristics of Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae)
Authors: Souza Silvana Aparecida de , Couto Irys Fernanda Santana , Pereira Mateus , Cardoso Claudia A. L. , Scalon Silvana de Paula Quintão , Pereira Fabricio Fagundes , Carvalho Emerson Machado de , Mussury Rosilda Mara
Published: April 2019

Plutella xylostella (Linnaeus, 1758) (Lepidoptera: Plutellidae) is an insect pest that causes great damage to Brassica cultures. It is necessary to develop alternative control methods, because this pest is resistant to many synthetic insecticides that are harmful to the environment. The objective of this study was to evaluate the effects of aqueous extracts of Campomanesia adamantium, C. guazumifolia, and C. xanthocarpa on the life cycle of P. xylostella. These aqueous extracts were prepared in a concentration of 10 g/mL and then applied on cabbage disks of 4 cm2 to feed the larvae until they reached pupal stage. The disks were evaluated daily during the larval stage and replaced every 24 hours. The experiment consisted of ten replicates, each replicate containing five subsamples. The parameters evaluated were larval and pupal survival, pupal biomass, gender ratio, male and female longevity, number of eggs, fecundity, oviposition period and egg survival. The C. xanthocarpa extract increased larval stage and decreased pupal biomass and oviposition period. The C. adamantium extract decreased larval duration, pupal biomass, male longevity, and oviposition period. The C. guazumifolia extract decreased larval stage, male longevity, and oviposition period. The chemical composition of the extracts of Campomanesia species presented flavonoids such as quercetin, phenolic compounds, and tannins, and the highest retention time occurred in C. adamantium. Thus, the extracts of Campomanesia species were effective in decreasing and controlling the oviposition period of P. xylostella, probably because of the presence of flavonoids, which indicates a possible antioxidant potential and, therefore, the observed antibiosis.
Litterfall and Nutrient Return in Eucalyptus dunnii Maiden in the Pampa Biome, Brazil
Authors: Momolli Dione Richer , Schumacher Mauro Valdir , Viera Márcio , Ludvichak Aline Aparecida , Guimarães Claudiney do Couto , Souza Huan Pablo de
Published: April 2019

The objective of this study was to evaluate litterfall and nutrient return in a Eucalyptus dunnii Maiden stand in the Pampa Biome. Four plots were established and four litter collectors per plot were distributed systematically with an area of 0.5 m² and four subplots used to collect large branches of > 0.5 cm diameter. The collections were carried out biweekly with monthly chemical analyzes over 12 months. The annual litterfall was 8.48 Mg ha-1, of which 59% was composed of leaves. In general, the leaves had the highest macronutrient contents except for Mg. The total macronutrient return was 215 kg ha-1, in the following order: Ca > N > K > Mg > S > P, with the leaves responsible for the return of 73% of the total. The litter represented an important source of organic matter and nutrients, and temperature is the climatic variable that best explains the pattern of production.
Cutting Height of Mombasa Grass Under Silvopastoral and Monoculture Systems
Authors: Rodrigues M. O. D. , Santos A. C. dos , Rodrigues M. O. D. , Silveira Junior O. , Oliveira L. B. T. de , Leite R. L. de L.
Published: April 2019

This study aimed to evaluate the production of Mombasa grass cultivation under two different systems: monoculture and silvopastoral, with heights of 70, 80, 90, and 100 cm. Two seasons were evaluated: rainy period (December to March) and rain/drought transition (March to June). The variables evaluated were: total dry mass (TDM), dry mass (DM) of the morphological components, number of tillers, efficiency of nitrogen use, DM content, number of harvest cycles and cutting intervals. The experimental design was a randomized block design with five replications. The monoculture system presented the highest yields of TDM, number of tillers and DM of the morphological components in the two evaluated periods. The main variable affected by shading was the number of tillers per area, which directly affects all variables linked to production. In addition to the type of system, the time of the year also influenced the production of DM of the grass. The evaluation of grass productivity in silvopastoral system evidenced that the plant tends to respond differently to cutting management when compared to the monoculture system. In the monoculture system, the recommended height for greater TDM yield and better leaf/stem ratio in the rainy period and the rainy/drought transition period was 80 cm, maintaining the residue height at 40 cm. As for SSP, cutting height of 70 cm presented the highest TDM and leaf/stem ratio for the two evaluated periods, maintaining the residue height at 40 cm.
Vegetation Diversity and Soil Physico-chemical Properties Under Traditional Management of Rangeland in Eastern Ethiopia
Authors: Alemie Dargo Kebede , Gebremedhin Haftay Hailu
Published: April 2019

The changes of herbaceous vegetation (composition, diversity, richness, evenness, and biomass production) and soil physico-chemical attributes of Harshin rangelands, eastern Ethiopia were examined under continuously open grazed areas and three ages of enclosures group arranged along chronological sequence into: < 5 years (young), 5-10 years (mid) and > 10 years (old). The herbaceous species composition showed a clear pattern of difference between the enclosure and open access grazed areas with desirable species being more prevalent in the enclosures and the undesirable ones being dominant in the open access grazed areas. The principal component analyses (PCA) of herbaceous species composition were accounted distinct across the open grazing young, mid and old enclosure management types. The diversity, richness and biomass production of herbaceous species were significantly different in the study area. The principal component analysis (PCA) of soil physico-chemical attributes showed distinct separation in relation to open grazing and three age enclosure areas. Overall, we found that the increased biomass production in the old enclosures may threat the herbaceous species diversity by dominating by only few species and hence affected the plants which are susceptible for species inter-competition.
The Effect of Creative Movement-Dance on the Development of Basic Motor Skills of Pre-School Children
Authors: Tsompanaki Eleni
Published: April 2019

The purpose of this study is to evaluate the effectiveness of a program for children aged 4-5 with the main tool of creative movement - dance and its influence on the development of basic motor skills. The aim of the intervention program is to develop "moving" motor skills through an organized intervention program with a variety of creative moves and creative dance. The intervention program aims to create a positive environment in which children can overcome negative emotions and join the team, communicate, experiment, discover, co-decide and create new kinetic dance forms.
TORTUOSIMETRIC OPERATOR FOR COMPLEX POROUS MEDIA CHARACTERIZATION
Authors: Chaniot Johan , Moreaud Maxime , Sorbier Loïc , Fournel Thierry , Becker Jean-Marie
Published: April 2019

Geometric tortuosity is one of the foremost topological characteristics of porous media. Despite the various definitions in the literature, to our knowledge, they are all linked to an arbitrary propagation direction. This article proposes a novel topological descriptor, named M-tortuosity, by giving a more straightforward definition, describing the data regardless of physicochemical processes. M-tortuosity, based on the concept of geometric tortuosity, is a scalable descriptor, meaning that information of several dimensions (scalar, histograms, 3D maps) is available. It is applicable on complex disconnected structures without any arbitrary definition of entry and exit. Topological information can be represented by aggregation into a unique scalar descriptor for classification purposes. It is extended by iterative erosions to take into account porous structure narrowness, especially bottleneck effects. This new descriptor, called M-tortuosity-by-iterative-erosions, describes tortuosity of the porous part as seen by a spherical particle of given size walking along the network. Boolean models are used to simulate different porous media structures in order to test the proposed characterization.
SOME DENSE RANDOM PACKINGS GENERATED BY THE DEAD LEAVES MODEL
Authors: Jeulin Dominique
Published: April 2019

The intact grains of the dead leaves model enables us to generate random media with non overlapping grains. Using the time non homogeneous sequential model with convex grains, theoretically very dense packings can be generated, up to a full covering of space. For these models, the theoretical volume fraction, the size distribution of grains, and the pair correlation function of centers of grains are given.
Obecność kobiet w systemach wyborczych w Europie
Authors: Skiba Andrzej
Published: April 2019

Celem artykułu jest krótkie scharakteryzowanie aktywności politycznej kobiet w europejskiej polityce na szczeblu parlamentu. W artykule zarysowana została kwestia istnienia ustawowych, oraz dobrowolnie stosowanych przez partie polityczne kwot wyborczych. Szczególny akcent został położony na państwa europejskie posiadające proporcjonalny system wyborczy. Autor podjął próbę odpowiedzi na następujące pytanie: czy stosowanie kwot płci wpływa na zwiększenie odsetka kobiet w parlamentach?
Rola Polskiej Organizacji Turystycznej w realizowaniu polityki turystycznej państwa w latach 2013-2018
Authors: Kraś Jacek
Published: April 2019

Turystyka zajmuje istotne miejsce w gospodarce światowej. Ze względu na jej masowy charakter stała się istotnym elementem polityki państw i regionów. Pod koniec XX w. i w pierwszych latach XXI w. stała się dynamicznie rozwijającą dziedziną gospodarki światowej, na co wskazuje udział wpływów z turystyki w PKB czy też udział w zatrudnieniu. Rosnące znaczenie turystyki znalazło również odzwierciedlenie w rozszerzeniu kompetencji administracji rządowej i samorządowej, wyodrębnieniu narodowych organizacji turystycznych oraz zwiększonej aktywności organizacji pozarządowych w tym zakresie.
Celem niniejszego artykułu jest przybliżenie celów, zadań i funkcji POT, która jest jedną z najważniejszych instytucji realizujących politykę turystyczną państwa. Jest nim również przybliżenie i analiza statusu organizacyjno-prawnego oraz najważniejszych działań tej organizacji, a także ocena jej działalności.
Czy doktoranci są prekariuszami?
Authors: Bień Dominik
Published: April 2019

The article touches upon the subject of PHD studies and students in Poland based on the precariat theory by Guy Standing. In the initial part, studies regarding tertiary education in Poland that have been carried out so far are covered. In the further part, main presuppositions of precariat theory are indicated. The author shows PHD students’ position in relation to possessing security forms appropriate for industrial era employees cited by Standing, for instance employment, income and representation security.

Socio-economic standing of PHD students has been recreated based on empirical data stemming from “Doktoranci 2011”and “Doktoranci 2015” surveys. This data was supplemented by Statistics Poland (GUS) data and by regulations.
Conclusions were drawn from the considerations showing that if one takes Standing’s categories literally, PHD students do not fall within the Precariat category, however one can indicate that they are somewhere in-between precarians and other social strata.
Být legislativcem: Empirická šetření v administrativních fázích legislativy
Authors: Škop Martin , Vacková Barbora
Published: April 2019

Tento článek se soustředí na porovnání výpovědí legislativních expertů s teoretickými přístupy k tvorbě práva. Cílem je zmapovat jejich pojetí činnosti, kterou provádějí, a která má vést ke vzniku právního předpisu. Cílem článku dále je předložit základní možné přístupy ke studiu procesů spjatých s tvorbou práva, zejména s fází, která probíhá na vládní úrovni, tj. v rámci byrokratického aparátu, kterým vláda, jako typický předkladatel návrhů právních předpisů, disponuje. Článek proto kombinuje empirické postupy (kvalitativní šetření s cílem vytvořit metodologii pro další empirická zjišťování) s doktrinálním přístupem zaměřeným na analýzu dostupných literárních poznatků, tedy s poznatky plynoucími z odborné literatury.
ТЕХНИКЕ СТВАРАЊА КОМИЧНОГ ЕФЕКТА У ПУТОПИСУ САЊАО САМ КАНАДУ
Authors: Томић Божана , Шајиновић Новаковић Јелена
Published: April 2019

Овај рад се бави истраживањем техника и начина којима се постижекомичан ефекат у путопису Сањао сам Канаду. Један од циљева овог рада је да се испитаи пренос хумористичног дијела текста из оригинала на енглески језик. Анализом шаљивихдијелова текста закључујемо да се хумор у овом дјелу не остварује сам употребомразговорног језика, поредбених реченица, инверзијом реченичних чланова већ икомбинацијом различитих стилских средстава у којима предњачи употреба ироније.Проблем настаје оног тренутка када такав текст треба прилагодити широј публици,превести на енглески језик, задржати шаљив тон, а звучати природно. Методекориштене приликом израде овог рада су аналитичке и компаративне.
СИНТАКСОСТИЛЕМЕ РЕДА РИЈЕЧИ НАСТАЛЕ ДЕКОМПОЗИЦИЈОМ СЛОЖЕНОГ СУБОРДИНИРАНОГ ВЕЗНИКА У СТАНДАРДНОМ СРПСКОМ ЈЕЗИКУ
Authors: Милановић Нина
Published: April 2019

У раду се на корпусу прозних дјела савремене српске књижевностианализирају врло ријетке и стилематичне синтаксостилемске структуре насталепоступком декомпозиције субординираних везника – као да и као што. У обимном корпусусрпске књижевности издвојила су се само три типа ових изразито онеобичајенихструктура, и то у романима М. Булатовића, Д. Ненадића, В. Стевановића и Р. Вучковића.Лингвостилистича анализа наведених синтаксостилемских структура у раду објединилаје стилематична и стилогена проучавања ексцерпираних примјера.
ПСИХО-СОЦИЈАЛНЕ КАРАКТЕРИСТИКЕ И АКАДЕМСКА САМОЕФИКАСНОСТ МЛАДИХ
Authors: Миљеновић Слађана , Опсеница Сања
Published: April 2019

Самоефикасност је средишњи концепт социјално-когнитивне теорије, адефинише се као процјена појединца о властитим способностима организовања иизвршавања одређених акција потребних за остварење жељених исхода, или, другимријечима, академска самоефикасност се односи на увјерења о сопственом постигнућу уоквиру институционалног учења.Феномен академске самоефикасности је значајан у томсмислу што, независно од когнитивних способности, ученици који имају високу академскусамоефикасност посматрају проблеме као изазов, посвећени су вишим академскимпостигнућима, оријентисани су на рјешавање задатака, неуспјехе сагледавају каонедостатак знања, а не као недостатак способности. Из тог разлога природно језакључити да нивои академске самоефикасности не само да могу утицати на цјелокупношколско постигнуће ученика, него и на развој личности у цјелини. С обзиром на значајконцепта академске самоефикасности у васпитно-образовном процесу, oсновни предметистраживања је утврдити корелацију академске самоефикасности ученика и школскогуспјеха, прије свега, иако на њу недвосмислено дјелују и друге, различите психо-социјалневаријабле. Истраживање је неекспериментално (survey), а резултати указују наповезаност академске самоефикасности и школског успјеха.