bluuebunny/crossref_metadata_2025 huggingface dataset:
PENGARUH PENGGUNAAN LEMBAR KERJA SISWA (LKS) BERBASIS KONTEKSTUAL TERHADAP HASIL BELAJAR SISWA PADA KONSEP SISTEM GERAK MANUSIA
Authors: Suryani Irma , Mardiati Yuke , Herlanti Yanti
Published: March 2020

Abstract This research aimed to know the influence of using contextual based student worksheet towards student learning outcomes on human movement system concept. This research was conducted at SMAN 10 Kota Tangerang Selatan. The research method used quasi experiment with pretest-posttest control group design. The sampling method was simple random sampling. The research sample were 37 students for experiment class by using contextual based student worksheet and 35 students for control class by using non contextual student worksheet. The instrument of this research consist of 20 multiple choice test and non test as activity observation sheet of teacher, student responses, attitude and performance assessment. The data analysis used t-test, obtained tarithmetic 2,17 and using ttable on a significant level α = 0,05 amounted 1,99, then tarithmetic > ttable. There was influence of using contextual based student worksheet towards student learning outcomes on human movement system concept. Contextual based student worksheet to facilitate the students to constructed knowledge and have the retention on human movement system concept. Keywords: student worksheet; contextual; learning outcomes Abstrak Penelitian ini bertujuan untuk melihat pengaruh penggunaan lembar kerja siswa (LKS) berbasis kontekstual terhadap hasil belajar siswa pada konsep sistem gerak manusia. Penelitian ini dilaksanakan di SMAN 10 Kota Tangerang Selatan. Metode penelitian yang digunakan adalah kuasi eksperimen dengan desain penelitian pretest posttest control group design. Pengambilan sampel dilakukan dengan teknik simple random sampling. Sampel penelitian untuk kelas eksperimen berjumlah 37 orang dengan menggunakan LKS berbasis kontekstual dan kelas kontrol berjumlah 35 orang dengan menggunakan LKS non kontekstual. Instrumen penilaian yang digunakan yaitu tes dan non tes. Tes yang diberikan berupa tes pilihan ganda sebanyak 20 butir soal dan instrumen non tes berupa lembar observasi aktivitas guru, respon siswa, penilaian sikap dan kinerja. Teknik analisis data menggunakan uji-t, diperoleh hasil thitung 2,17 dan ttabel pada taraf signifikansi α = 0,05 sebesar 1,99, maka thitung > ttabel. Hal ini menunjukkan bahwa terdapat pengaruh LKS berbasis kontekstual terhadap hasil belajar pada konsep sistem gerak manusia. LKS berbasis kontekstual dapat mempermudah siswa dalam mengkonstruksi pengetahuan dan memiliki retensi terhadap konsep sistem gerak. Kata Kunci: lembar kerja siswa; kontekstual; hasil belajar  Permalink/DOI: http://dx.doi.org/10.15408/es.v8i2.1823
GUIDED INQUIRY AND GUIDED DISCOVERY MODEL IN SCIENCE LEARNING TO ‎IMPROVE COGNITIVE ABILITY OF JUNIOR HIGH SCHOOL STUDENTS
Authors: Syafrilianto Syafrilianto Syafrilianto , Rahman Taufik
Published: March 2020

This study aims to find out the improvement of cognitive ability through the implementation of guided inquiry and guided discovery model in integrated natural science learning. Alternative energy sources was chosen as the learning theme which contain Biology, Physic, Chemistry concepts, which consist of briquettes as the heat source, and battery as the power source. This study used quasi experiment method with matching only pretest posttest control group design. The subject of this study were 42 students of VII grade of Junior High School in Kampar District which consist of experiment and control class with 21 students in each class. Student cognitive learning outcomes was measured by multiple choice test instrument, which contain of 21 items which was done twice (pretest and posttest). The technic of data analysis was normality test and hypothesis test (U test). Data were analyzed by IBM SPSS 22 statistics and Microsoft Excel 2010 program. The N-Gain average of cognitive ability shows that there is an improvement of student cognitive ability in experiment class as 0,44 with intermediate category, and in control class as 0,21 with low category. While, the result of U test toward N-Gain value shows that there is a significant difference on student cognitive ability between students in experiment and control class. Thus, it can be concluded that guided inquiry model can improve student cognitive ability more than guided discovery model. Keywords: guided inquiry model, discovery guided model, cognitive ability, alternative energy sources
Improving Science Process Skill though Guided Inquiry and Performance Assesment
Authors: Mangurai Siti Mayang
Published: March 2020

Abstract This research aims to understand the increase in skill the process of science students with a guided inquiry model and performance assessment and the implementation of guided inquiry model and performance assessment to students of class XI IPA  Christian High School 1 Salatiga . Skills of the research process are studied consisting of observing, hypothesizing, questioning, applying concepts, communicating, and practicing with minimum criteria for psychomotor criteria for 73. The type of research used is classroom action research with data triangulation research technique, in the form of questionnaire instrument, interview sheet, observation sheet, student performance assessment result, and supporting data in the form of documentation. The results showed that the results of the students' science process skills experienced an increase in each cycle. Guided inquiry models also familiarize students to play an active role in all learning activities and practicum conducted by students, so that students not only understand the material but also skillfully using laboratory tools. Keywords: guided inquiry; KPS; performance assessment; student. Abstrak Peneliitian ini  bertujuan untuk mengetahui peningkatan keterampilan proses sains siswa dengan model inkuiri terbimbing dan performance assessment serta penerapan model inkuiri terbimbing dan performance assessment pada siswa kelas XI IPA I SMA Kristen 1 Salatiga. Keterampilan proses sains yang diteliti terdiri dari keterampilan mengamati, berhipotesis, menanya, menerapkan konsep, berkomunikasi, dan melakukan praktikum dengan kriteria ketuntasan minimal untuk psikomotorik sebesar 73. Jenis penelitian yang digunakan yaitu penelitian tindakan kelas dengan teknik penelitian triangulasi data, berupa instrumen angket, lembar wawancara, lembar observasi, hasil performance assessment siswa, dan data pendukung berupa dokumentasi. Hasil penelitian menunjukkan bahwa hasil keterampilan proses sains siswa mengalami peningkatan pada setiap siklus. Model inkuiri terbimbing juga membiasakan siswa untuk berperan aktif dalam seluruh kegiatan pembelajaran dan praktikum yang dilakukan siswa, sehingga siswa tidak hanya memahami materi tetapi juga cakap menggunakan alat-alat laboratorium. Kata kunci: inkuiri terbimbing; KPS; performance assessment; siswa. Permalink/DOI:http://dx.doi.org/10.15408/es.v9i2.7209
Emerging regulatory roles of mitochondrial sirtuins on pyruvate dehydrogenase complex and the related metabolic diseases: Review
Authors: Nasiri Abolfazl , Sadeghi Masoud , Vaisi-Raygani Asad , Kiani Sara , Aghelan Zahra , Khodarahmi Reza
Published: March 2020

The pyruvate dehydrogenase complex (PDC) is a multi-enzyme complex of the mitochondria that provides a link between glycolysis and the Krebs cycle. PDC plays an essential role in producing acetyl-CoA from glucose and the regulation of fuel consumption. In general, PDC enzyme is regulated in two different ways, end-product inhibition and posttranslational modifications (more extensive phosphorylation and dephosphorylation subunit E1). Posttranslational modifications of this enzyme are regulated by various factors. Sirtuins are the class III of histone deacylatases that catalyze protein posttranslational modifications, including deacetylation, adenosine diphosphate ribosylation, and deacylation. Sirt3, Sirt4, and Sirt5 are mitochondrial sirtuins that control the posttranslational modifications of mitochondrial protein. Considering the comprehensive role of sirtuins in post-translational modifications and regulation of metabolic processes, the aim of this review is to explore the role of mitochondrial sirtuins in the regulation of the PDC. PDC deficiency is a common metabolic disorder that causes pyruvate to be converted to lactate and alanine rather than to acetyl-CoA. because this enzyme is in the gateway of complete oxidation, glucose products entering the Krebs cycle and resulting in physiological and structural changes in the organs. Metabolic blockage such as ketogenic diet broken up by b -oxidation and producing acetyl-CoA can improve the patients. Sirtuins play a role in the production of acetyl-CoA through oxidation of fatty acids and other pathways. Thus, we hypothesize that the targets and bioactive compounds targeting mitochondrial sirtuins can be involved in the treatment of PDC deficiency. In general, this review discusses the present knowledge on how mitochondrial sirtuins are involved in the regulation of PDC as well as their possible roles in the treatment of PDC deficiency.
Health Care Reform, Length of Stay, and Readmissions for Child Mental Health Hospitalizations
Authors: Connell Sarah K. , Rutman Lori E. , Whitlock Kathryn B. , Haviland Miriam J. , Simmons Shannon , Schloredt Kelly , Ramos Jessica , Brewer Kathy , Augustine Marie , Lion K. Casey
Published: March 2020

BACKGROUND:

Health care reform may impact inpatient mental health services by increasing access and changing insurer incentives. We examined whether implementation of the 2014 Affordable Care Act (ACA) was associated with changes in psychiatric length of stay (LOS) and 30-day readmissions for pediatric patients.

METHODS:

We conducted an interrupted time-series analysis to evaluate LOS and 30-day readmissions during the 30 months before and 24 months after ACA implementation, with a 6-month wash-out period, on patients aged 4 to 17 years who were discharged from the psychiatry unit of a children’s hospital. Differences by payer (Medicaid versus non-Medicaid) were examined in moderated interrupted time series. Logistic regression was used to examine the association between psychiatric LOS and 30-day readmissions.

RESULTS:

There were 1874 encounters in the pre-ACA period and 2186 encounters in the post-ACA period. Compared with pre-ACA implementation, post-ACA implementation was associated with LOS that was significantly decreasing over time (pre-ACA versus post-ACA slope difference: −0.10 days per encounter per month [95% confidence interval −0.17 to −0.02]; P = .01), especially for Medicaid-insured patients (pre-ACA versus post-ACA slope difference: −0.14 days per encounter per month [95% confidence interval −0.26 to −0.01]; P = .03). The overall proportion of 30-day readmissions increased significantly (pre-ACA 6%, post-ACA 10%; P < .05 for the difference). We found no association between LOS and 30-day readmissions.

CONCLUSIONS:

ACA implementation was associated with a decline in psychiatric inpatient LOS over time, especially for those on Medicaid, and an increase in 30-day readmissions. LOS was not associated with 30-day inpatient readmissions. Further investigation to understand the drivers of these patterns is warranted.
Pediatric Massive and Submassive Pulmonary Embolism: A Single-Center Experience
Authors: Ross Catherine E. , Shih Jenny A. , Kleinman Monica E. , Donnino Michael W.
Published: March 2020

OBJECTIVES:

To describe and compare patient and event characteristics and outcomes in pediatric massive pulmonary embolism (MPE) and submassive pulmonary embolism (SMPE).

METHODS:

A retrospective cohort study at a quaternary-care pediatric hospital was conducted. Patients age <19 years with MPE (acute pulmonary embolism [PE] with cardiac arrest, hypotension, or compensated shock due to PE) or SMPE (right ventricular strain due to acute PE) between January 1997 and June 2019 were included.

RESULTS:

Thirty-three patients were identified, including 9 (27%) patients with MPE and 24 (73%) patients with SMPE. The most commonly identified risk factor was use of oral contraceptive pills in 16 (49%) patients. Six (18%) patients died, 3 (9%) of which were PE-related deaths. Before PE, patients with MPE were more likely to be hospitalized (89% vs 13%, P < .001), have major comorbidities (89% vs 25%, P = .002), central venous catheters (67% vs 17%, P = .01), critical illness (56% vs 8%, P = .009), immobility (67% vs 13%, P = .005), and be postoperative (44% vs 4%, P = .01). MPE patients were also more likely to die before discharge (56% vs 4%, P = .003). Both groups were equally likely to have primary reperfusion attempts (78% of MPE versus 67% of SMPE, P = .69).

CONCLUSIONS:

Pediatric MPE and SMPE differed in presentation, comorbidities, and risk factors, many of which were associated with hospitalization status. Pediatric-specific studies are warranted to determine risk assessment and management strategies, which may differ from adult guidelines.
Improving Antibiotic Prescribing for Pediatric Urinary Tract Infections in Outpatient Settings
Authors: Daley Matthew F. , Arnold Rehring Sharisse M. , Glenn Karen A. , Reifler Liza M. , Steiner John F.
Published: March 2020

OBJECTIVES:

To determine if a multicomponent intervention was associated with increased use of first-line antibiotics (cephalexin or sulfamethoxazole and trimethoprim) among children with uncomplicated urinary tract infections (UTIs) in outpatient settings.

METHODS:

The study was conducted at Kaiser Permanente Colorado, a large health care organization with ∼127 000 members <18 years of age. After conducting a gap analysis, an intervention was developed to target key drivers of antibiotic prescribing for pediatric UTIs. Intervention activities included development of new local clinical guidelines, a live case-based educational session, pre- and postsession e-mailed knowledge assessments, and a new UTI-specific order set within the electronic health record. Most activities were implemented on April 26, 2017. The study design was an interrupted time series comparing antibiotic prescribing for UTIs before versus after the implementation date. Infants <60 days old and children with complex urologic or neurologic conditions were excluded.

RESULTS:

During January 2014 to September 2018, 2142 incident outpatient UTIs were identified (1636 preintervention and 506 postintervention). Pyelonephritis was diagnosed for 7.6% of cases. Adjusted for clustering of UTIs within clinicians, the proportion of UTIs treated with first-line antibiotics increased from 43.4% preintervention to 62.4% postintervention (P < .0001). The use of cephalexin (first-line, narrow spectrum) increased from 28.9% preintervention to 53.0% postintervention (P < .0001). The use of cefixime (second-line, broad spectrum) decreased from 17.3% preintervention to 2.6% postintervention (P < .0001). Changes in prescribing practices persisted through the end of the study period.

CONCLUSIONS:

A multicomponent intervention with educational and process-improvement elements was associated with a sustained change in antibiotic prescribing for uncomplicated pediatric UTIs.
BIODIVERSITY OF PLANTS AND NATURAL HABITATS IN THE VICINITIES OF ARAPYA BAY, ROPOTAMO NATURAL RESERVE, ALEPU BEACH, SINEMORETS AND SILISTAR CAPE (BULGARIAN SOUTHERN BLACK SEA COAST)
Authors: Dimitrov D. , Vutov V.
Published: March 2020

The flora in the vicinities of Arapya Bay, Alepu beach, Sinemorets and Silistar cape of the Bulgarian Black Sea coast (which includes three beach zones and two protected natural areas) is rich in rare psammophytic and halophytic species: Hypecoum ponticum Velen., Pancratium maritimum L., Silene thymifolia Sm., Eryngium maritimum L., Limonium latifolium (Sm.) Kuntze, Tulipa thracica Davidov, Centaurea arenaria M. Bieb., Trachomitum venetum (L.) Woodson and Maresia nana (DC.) Batt. Within these areas some Mediterranean geo elements reach their northernmost point: Reichardia picroides (L.) Roth and Romulea linaresii Parl. All of the species mentioned above have been included in the Red List of Bulgarian vascular plants (1)
The Tulipa thracica Davidov species fall under a Critically Endangered (CR) category. Nine species have an Endangered (EN) status: Hypecoum ponticum Velen., Pancratium maritimum L., Silene thymifolia Sm., Eryngium maritimum L., Trachomitum venetun (L.) Woodson, Reichardia picroides (L.) Roth, Cistus salviifolius L., Verbascum bugulifolium Lam. and Serapias vomeracea (Burm.) Briq. Six species fall under a Vulnerable (VU) category: Limonium latifolium (Sm.) Kuntze, Centaurea arenaria M. Bieb., Maresia nana (DC.) Batt. and Romulea linaresii Parl., Limodorum abortivum (L.) Schwarz and Orchis papilionacea L. Under a Least Concern (LC) are the following species: Fritillaria pontica Wahlenb. and Mespilus germanica L. Legally protected by (2) are: Pancratium maritimum L., Eryngium maritimum L., Limonium latifolium (Sm.) Kuntze, Tulipa thracica Davidov, Centaurea arenaria M. Bieb., Trachomitum venetum (L.) Woodson, Maresia nana (DC.) Batt, Reichardia picroides (L.) Roth, Romulea linaresii Parl., Verbascum bugulifolium Lam., Cistus salviifolius L., Serapias vomeracea (Burm.) Briq., Limodorum abortivum (L.) Schwarz, Orchis papilionacea L., Fritillaria pontica Wahlenb. In addition, there are five species from the Orchidaceae family with different conservation status: the Endangered Serapias vomeracea (Burm.) Briq., the Vulnerable Limodorum abortivum (L.) Schwarz and Orchis papilionacea L. and two species from the CITES convention - Orchis purpurea Huds.and Orchis morio L. Three habitats were with an Endangered Conservation status: 01B1 Pontic sand beach annual communities, 02B1 Pontic embryonic dunes and 04B1 Southwestern Pontic fixed dunes (3).
STUDY OF ELEMENTS OF INTEGRATED FERTILIZER SYSTEMS IN GLASSHOUSE CUCUMBER
Authors: Arnaoudov B. , Boteva H. , Dintcheva Ts.
Published: March 2020

The current study goal is to determine the influence of some organic fertilizers over the growth and the productive qualities of the glasshouse cucmbers grown as a substrate culture. The experimental work was conducted in non-heated glasshouse Venlo type in Maritza VCRI Plovdiv with Defense cucumber variety (EZ). Adding Humustim to the nutrition regime of the glasshouse cucumbers increases the first quality production (99550 kg/ha).The quantity of the yield from second quality was not influenced by the use of the studied fertilizing bioproducts. The treatment with Humustim did not significantly increase the total yield in comparison with the conventional fertilization but there was considerable higher influence over the productivity among the rest of the fertilizing bioproducts. As a result of adding the organic fertilizers to the nutrition regime the percentage distribution of the production from first quality was not increased.
Laura Niebling, Rockumentary: Theorie, Geschichte und Industrie
Authors: Weidhase Nathalie
Published: March 2020

Laura Niebling, Rockumentary: Theorie, Geschichte und Industrie. Marburg: Schueren

Verlag, 2018. 412 pp. ISBN 978-3-89472-842-7 (pbk).
A análise do grau de satisfação dos serviços de transporte público utilizados por discentes de uma universidade pública federal
Authors: Muniz Emerson Cleister Lima , Souza Wiliam Santos , De Jesus Willyans Santos , Pereira Gustavo Alves , Prudente Victor Dias
Published: March 2020

O transporte público brasileiro é usualmente alvo de diversas críticas por parte dos usuários, especialmente em pontos como lotação, conservação dos veículos e alto preço das passagens. Diante disto, este trabalho buscou analisar o grau de satisfação dos serviços de transporte público, realizado por ônibus, e utilizados por estudantes de uma instituição pública de ensino superior. Para tanto, um modelo de referência foi adaptado, verificado, aplicado e seus resultados analisados. O serviço de transporte foi analisado com base em 05 categorias específicas, onde todas foram classificadas em péssima, ruim ou regular. No que diz respeito à análise geral do serviço, constatou para o mesmo um grau de satisfação de 3,949, classificando-se então como ruim. Dentre as categorias analisadas, a com pior grau de satisfação foi a de valor agregado, com 2,361, enquanto que o atendimento obteve o melhor resultado, com 5,1910. Nos critérios individuais, percebe-se que o valor pago na tarifa, vias e paradas e conservação dos veículos estão entre os elementos mais críticos oferecidos aos clientes.
Utilização da ferramenta Kaizen em uma indústria de alimentos e seus ganhos
Authors: Almeida Renan Torquato , Loos Mauricio Johnny
Published: March 2020

A busca pela melhoria contínua e a luta diária por melhores resultados econômicos nas empresas tem sido constante, tendo em vista não somente o crescimento, assim como oferecer produtos e serviços com uma melhor qualidade, fazendo assim com que as empresas busquem o conhecimento das melhores práticas e metodologias para alcançarem estes objetivos. Com esse cenário, este trabalho objetiva apresentar como funciona a aplicação da ferramenta Kaizen em uma das maiores empresas do ramo de massas e biscoitos da América Latina. O trabalho adota o estudo de caso como abordagem metodológica, cujas evidências foram coletadas por meio de alguns trabalhos de melhoria contínua realizados na empresa. Os resultados mostram que a ferramenta Kaizen auxiliou na melhoria dos métodos e processos, tendo como principal evidência a redução de 35% na geração de descarte para o Kaizen específico apresentado neste estudo de caso.
Uma análise sistemática da literatura acerca dos métodos de usabilidade aplicáveis a dispositivos móveis
Authors: Machado Lais , Vergara Lizandra Garcia Lupi
Published: March 2020

O artigo apresenta um mapeamento acerca dos métodos de usabilidade aplicados em dispositivos móveis, também retrata a seleção de um portfólio bibliográfico das pesquisas relevantes, segundo a percepção do pesquisador. Este trabalho, qualifica-se como exploratório-descritivo; com abordagens qualitativa e quantitativa; de natureza teórico-ilustrativa. Utilizou-se como instrumento de intervenção o Knowledge Development Process – Construtivist (ProKnow-C). A partir de uma triagem em 17 bases de dados, listou-se 18 artigos alinhados ao tema, para compor o portfólio bibliográfico (PB). Realizou-se uma análise bibliométrica e análise sistêmica, nas quais identificou-se os artigos, periódicos e autores que se destacam nas pesquisas atuais sobre o tema. Os resultados do presente estudo evidenciam o estado da arte, assim como lacunas e oportunidades sobre o tema em questão, podendo ser utilizado como subsídio para outros pesquisadores em investigações futuras.
The proposition of factors for analysis of the maintenance of agricultural tractors from a systematic bibliographic review
Authors: Silveira Franco da , Machado Filipe Molinar , Amaral Fernando Gonçalves , Santos Bruno Miranda dos , Rodrigues Paulo Cesar Chagas
Published: March 2020

The maintenance of agricultural tractors can be understood as the set of procedures that seek to keep the equipment in the best working conditions. However, carrying out adequate planning that can help optimize the maintenance of agricultural tractors is a complex task. The article consists of identifying and presenting a proposal of analysis factors for the maintenance of agricultural tractors, as well as their technical characteristics and modes of operation. In methodological terms, a Systematic Bibliographic Review was applied on maintenance and planning for agricultural tractors in two international databases. The research is classified as descriptive and comparative, of an exploratory nature. As a result, the study contributed to the information gap regarding the maintenance of agricultural tractors. In addition, we identified the main factors that must be analyzed to keep the equipment in the best operating conditions and that are responsible for increasing its useful life and avoiding future problems. The maintenance factor, which includes checking the level and oil change of the front axle, is characterized as the most important analysis procedure.
The Initial Educational Content of Theatre as a Subject Implemented in 11th or 12 th Grades by Pre-service Theatre Teachers: Relevant and Broad
Authors: Kazragytė Vida
Published: March 2020

This article presents the results of an investigation into the initial educational content of theatre subject in 11th or 12th grades in Lithuania. It is shown, that the initial educational content of theatre subject is devoted to obviate the negative pupils’ attitudes to themselves and their inabilities to interact. Also, to achieve an expressing pupil’s individual point of view, creating respectful relationships, behaving as a co-creator.
Educational Opportunities of Natural Science Motivation for Students with Special Educational Needs: the Viewpoint of Natural Science Teachers
Authors: Augustinovič Agata
Published: March 2020

The article discusses how (in what ways) natural science educations teachers motivate students with special educational needs in order to encourage students’ motivation to learn. Researches reveal that students with learning needs have experienced a variety of learning difficulties, which often causes the loss of their learning motivation and even willingness to attend school. In nowadays school, which aim is to ensure proper education for each pupil, the teacher has to pay special attention to developing pupils’ learning motivation. The article presents a study aimed at finding out how to effectively educate children with special educational needs in general education schools. In the survey participated 146 teachers of nature study, who have experience in working with students with special educational needs. The results of the study revealed that teachers rely on the provisions of the Teachers’ Ethics Code to encourage students to work independently and persistently. This is a very new insight, as the Teachers’ Ethics Code was approved only on 11 June 2018 by order No. V-561 of the Minister of Education and Science. From the teachers’ point of view, for students with special educational needs to increase learning motivation teachers use interesting innovation teaching methods, practical work, use of ICT, creation of educational environments, oral and written honors, gratitude. Also, they use fair evaluation, better marks for progress, even if it is small, adopted tasks, create the conditions for success, pursuit to raise interest, attention, encouragement, communication, cooperation.
Photo-selective nets and potassium concentrations on Costus lasius crop
Authors: Sampaio Pedro R. F. , Rodrigues Paulo H. V. , Duarte Sergio N. , Sousa Neto Osvaldo N. de , Nascimento Jéssica G. , Piedade Sônia M. de S.
Published: March 2020

ABSTRACT The practice of using different photo-selective nets, associated with the technique of fertigation, represents a new agrotechnological concept that aims to promote specific physiological responses for growth and production, which are regulated by light. The aims of the study were to evaluate the effect of photo-selective nets and potassium concentrations in the fertigation solution on the horticultural performance of Costus lasius. The study was conducted at the Universidade de São Paulo, ESALQ, Piracicaba, SP, Brazil. Three experiments were carried out separately to evaluate five potassium concentrations in the fertigation solution (40, 80, 120, 160 and 200 mg L-1) under three colours of photo-selective nets (red, blue and black) in a randomized block design, with five repetitions. The variables plant height and numbers of leaves, stems and flower buds were evaluated. The data were submitted to the joint analysis of experiments. The association between the K+ concentration of 200 mg L-1 and the black photo-selective net results in higher stem and inflorescence production.
Nutrient concentration and nutritional efficiency in ‘Gigante’ cactus pear submitted to different spacings and fertilizations
Authors: Lédo Alex A. , Donato Sergio L. R. , Aspiazu Ignácio , Silva João A. da , Donato Paulo E. R. , Carvalho Abner J. de
Published: March 2020

ABSTRACT The objective of this study was to evaluate nutrient concentration and nutritional efficiency in ‘Gigante’ cactus pear under different chemical, organic and organomineral fertilizations, planting configurations and spacings, during three production cycles. Seventy two treatments, involving two types of configuration in the plots, three spacings in the subplots and 12 types of fertilization in the sub-subplots were arranged in a split-split-plot scheme, in a randomized block design, with three repetitions. At the time of harvest of each production cycle, 40 cladode tissue samples were collected per treatment to determine dry matter mass and nutrient concentration, which were used to calculate the coefficients of biological utilization of nutrients. Organic fertilization reduces Mn concentrations in cladodes to levels below the sufficiency range. The nutritional efficiency of N, S, P, Mn and Zn is higher with organic and organomineral fertilizations and are associated with higher dry matter yields, whereas K nutritional efficiency is higher with mineral fertilization. The absence of fertilization or application of 30 Mg ha-1 year-1 of bovine manure is insufficient to ensure nutritional status and dry matter yield above 15 Mg ha-1 in ‘Gigante’ cactus pear.
Intermittent drying of clove basil leaves: Process optimization and essential oil yield
Authors: Souza Raiane A. de , Melo Evandro de C. , Ávila Mariane B. R. de , Gonzaga Diego A. , Sperotto Naiara C. Z. , Carneiro Antônio P. S.
Published: March 2020

ABSTRACT This study investigated the effect of a drying method with intermittent ratios on the effective drying time, specific energy consumption and essential oil yield of clove basil (Ocimum gratissimum L.) leaves. The drying tests were conducted at the Postharvest Laboratory of Medicinal, Aromatic and Condiment Plants, from the Departamento de Engenharia Agrícola of the Universidade Federal de Viçosa, Viçosa, MG, Brazil (20° 46’ 13.5” S; 42° 52’ 23.3” W, and altitude of 645 m) in October and November 2017. The experiment was conducted by using a 3 × 4 factorial scheme including three drying temperatures at 50, 60 and 70 °C, with four drying processes: continuous drying and the following three intermittent drying/tempering ratios in minutes: 10/20, 15/15 and 20/10. The design was completely randomized and with three repetitions. The application of the 10/20 intermittent ratio reduced the effective drying time and the specific energy consumption. Regarding the essential oil yield, the use of the intermittence presented different results for each temperature of drying; the highest yields were observed with continuous drying at 50 °C and drying with the 20/10 intermittent ratio at 60 °C. The results indicate that intermittent drying at 50 °C is not recommended to preserve essential oil yields.
Desenvolvimento e caracterização de bioplásticos de amido de milho contendo farinha de subproduto de broto
Authors: Silva Maria Luiza Tonetto , Brinques Graziela Brusch , Gurak Poliana Deyse
Published: March 2020

Resumo O objetivo deste trabalho consistiu em desenvolver e caracterizar filmes biodegradáveis de amido de milho contendo farinha de subproduto de broto. Para isso, foi desenvolvida uma farinha a partir de diferentes tipos de broto (feijão, alfafa, amaranto, brócolis, rabanete e, predominantemente, trevo) e realizada sua caracterização tecnológica. Primeiramente, foi produzida farinha de subprodutos de brotos com uso de circulação forçada de ar a 50 ºC. As análises físico-químicas demonstraram que a farinha elaborada apresentou coloração marrom-clara, alta capacidade de retenção de água, baixa solubilidade em água e elevado conteúdo de fibras totais. Posteriormente, foram elaboradas soluções filmogênicas contendo amido de milho (4%), glicerol (30% sobre o conteúdo de amido de milho) e água destilada (q.s.p. 100%). Nessas formulações, a farinha de subproduto de broto variou entre 0 (controle), 2,5%, 5%, 7,5% e 10% em relação ao amido de milho. Os resultados das análises realizadas nos filmes demonstraram que, ao adicionar farinha de subproduto de broto, ocorreu alteração dos parâmetros de cor, no índice de solubilidade em água e na temperatura de fusão, quando comparado o filme controle aos filmes com diferentes proporções de farinha de subproduto de diferentes de brotos. Os valores de solubilidade em ácido e óleo não apresentaram diferenças entre as formulações analisadas. Diante dos resultados obtidos, o subproduto de broto se mostrou como um possível insumo para o desenvolvimento de bioplásticos, visando ao melhoramento das propriedades tecnológicas e ao reaproveitamento dos resíduos agroindustriais.
Cross-cultural adaptation of the Brazilian version of the Questionnaire on Eating and Weight Patterns-5 (QEWP-5)
Authors: Moraes Carlos Eduardo Ferreira de , Mourilhe Carla , Freitas Sílvia Regina de , Veiga Glória Valéria da , Marcus Marsha D. , Appolinário José Carlos
Published: March 2020

Abstract Introduction The Questionnaire on Eating and Weight Patterns-5 (QEWP-5) is a self-report instrument developed to screen individuals for binge eating disorder (BED), as defined by the DSM-5. However, this version of the instrument had not been adapted for the Brazilian population. Objective To describe translation and cross-cultural adaptation of the QEWP-5 into Brazilian Portuguese. Methods Translation and cross-cultural adaptation of the QEWP-5 included the following steps: forward translation, comparison of translations and a synthesis version, blind back-translations, comparison of the back translations with the original version, and a comprehensibility test. The comprehensibility test was conducted with a sample of 10 participants with BED or bulimia nervosa and 10 eating disorders experts. Additionally, a Content Validity Index (CVI-I) was calculated for each item and then averaged to produce an index for the entire scale (CVI-Ave), to assess content equivalence. Results Some inconsistencies emerged during the process of translation and adaptation. However, the expert committee solved them by consensus. The participants of the comprehensibility test understood the Brazilian version of QEWP-5 well. Only 2 patients (20%) had doubts about items related to subjective binge eating episodes. Content equivalence analysis rated all items relevant, with CVI-I ranging from 0.8 to 1.0 and an overall CVI-Ave of 0.94. In view of the good overall assessment of the pre-final version of the instrument, additional changes were not made to the final version. Conclusion The Brazilian version of the QEWP-5 was cross-culturally adapted and was well understood by the target population. Further studies are required to assess its psychometric properties.
SISTEMA POLÍTICO-ADMINISTRATIVO E INTERAÇÕES NA IMPLEMENTAÇÃO DE POLÍTICAS PÚBLICAS
Authors: Dutra Roberto
Published: March 2020

O artigo propõe uma análise sociológica sistêmica das burocracias de nível de rua e seus possíveis efeitos em trajetórias de inclusão e exclusão. Com base na sociologia de Niklas Luhmann, o objeto específico da análise é a autonomia da interação na produção de estruturas de expectativas sociais que podem orientar decisões sobre inclusão e exclusão em organizações de implementação de políticas públicas. O resultado é um modelo sistêmico multinível para observar a burocracia de nível de rua, articulando distintos níveis de formação sistêmica, como organização, interação, redes sociais e sistemas de função. Neste quadro, a análise multidimensional das formas de inclusão e exclusão permite observar e comparar o peso relativo das interações implementadoras e da dimensão relacional do Estado para trajetórias de inclusão e exclusão em cada setor de política pública.
AUTORIDADE PRIVADA NA GOVERNANÇA DA INTERNET: Regimes de nomes e domínios na América Latina
Authors: Holmes Pablo , Anastácio Kimberly
Published: March 2020

O artigo dialoga com a literatura da ciência política e das relações internacionais sobre governança e sobre a emergência de formas de autoridade não-estatais, para observar a emergência de autoridade privada na regulação dos recursos críticos da internet a partir da afirmação do modelo multissetorial. Para tanto, baseia-se em pesquisa comparativa entre os modelos de governança dos domínios nacionais de nível superior (ccTLDs) de quatro países latino-americanos: Argentina, Brasil, México e Colômbia. Com pesquisa documental e entrevistas feitas com os setores governamentais e não-governamentais, demonstra-se que, apesar de trajetórias bastante diversas, esses regimes convergem, ao menos nominalmente, para um arranjo multissetorial. Mesmo com limites, o multissetorialismo serve como regra de autoridade, não podendo ser compreendido a partir de teorias clássicas de regulação fundadas em modelos hierárquicos e centradas no Estado.
Ambivalência, solidariedade e educação: entre o indivíduo e o social
Authors: Cassol Claudionei Vicente
Published: March 2020

RESUMO Pensar a educação como ação individual e atitude de acolhida e solidariedade, assumindo o pensamento de Zygmunt Bauman como base teórica central é a preocupação fundamental deste ensaio. No primeiro momento, a tematização desenvolve-se no intuito de demonstrar a existência de um paradigma ambivalente que, instalado na modernidade líquida, se fortalece pela hermenêutica pluralizadora. No segundo, conferindo-se a possibilidade de factibilidade da ambivalência, tanto no mundo concreto quanto no simbólico, debatemos sobre a necessidade e a alternativa da solidariedade na ação educacional. A compreensão de educação para a/com solidariedade, do horizonte da condição humana, é potencialidade e alternativa instituinte. Desse modo, destacamos a ideia do ato educativo como acontecimento possível na relação entre humanos, constituindo-se em atitude mediante subjetividades e dimensionando-se para as vivências/experiências coletivas. O paradigma da ambivalência permite, portanto, pensar e questionar a pluralidade de compreensões em afastamento às verdades únicas e determinantes.
Imagens de identidade profissional de futuros professores
Authors: Rodrigues Filomena Alves , Mogarro Maria João
Published: March 2020

RESUMO Neste artigo problematiza-se a identidade profissional dos professores, com base na análise das reflexões finais de quatro mestrandos da Universidade de Lisboa, procurando-se compreender as concepções de identidade profissional desses futuros professores de ciências do ensino secundário. Nesta análise utiliza-se uma metodologia qualitativa centrada em uma perspectiva narrativa. Em suas reflexões, esses futuros professores referem a importância das aprendizagens que realizaram no âmbito da prática de ensino supervisionada e o seu contributo para o desenvolvimento profissional. Essas narrativas, escritas em primeira pessoa, expressam as percepções dos mestrandos sobre a própria evolução ao longo do processo de formação inicial e evidenciam suas identidades profissionais no final desse ciclo de formação. Essa evolução decorre de suas experiências letivas e não letivas e revela diferentes graus de consolidação das suas identidades profissionais.
Análisis multifocal en la formación inicial de docentes: interpretaciones de alumnado y supervisores
Authors: Saiz-Linares Ángela , Ceballos-López Noelia
Published: March 2020

RESUMEN Se analiza la experiencia de practicum de la titulación de maestro de la Universidad de Cantabria (España) desde la perspectiva de supervisores universitarios y alumnos. Su objetivo es poner en diálogo las concepciones de ambos colectivos y anticipar algunas orientaciones de mejora. Se ha utilizado una metodología cualitativa concretada en un estudio de caso en el curso 2017-2018. La muestra se compuso de 12 participantes y las técnicas de recogida de información han sido entrevistas en profundidad y análisis de documentos. Los resultados manifiestan concepciones profesionalizadoras del practicum para los alumnos frente a orientaciones más formativas para los supervisores. Asimismo, se analizan diferentes estrategias para favorecer practicum más reflexivos. Además, se muestran algunas limitaciones del actual sistema de evaluación. Finalmente, se discute sobre la necesidad de configurar practicum más colaborativos entre el supervisor universitario, el tutor de escuela y los alumnos.
Profesores en dictadura y democracia: perspectiva biográfica de docentes en fin de carrera profesional
Authors: Orellana-Fernández Rosa , Merellano-Navarro Eugenio , Berríos-Villarroel Adolfo , Almonacid-Fierro Alejandro
Published: March 2020

RESUMEN Este artículo analiza las trayectorias profesionales de cinco profesoras en dos momentos importantes en la historia de Chile: la dictadura y el regreso a la democracia. Nos apoyamos en el método biográfico con el fin de comprender, desde las voces de las protagonistas sus experiencias significativas. Estas se analizaron según los preceptos de la teoría fundamentada. Los resultados describen una trayectoria profesional marcada por el miedo y la desconfianza. Desprendemos que los últimos años de trabajo ponen de manifiesto el desaliento frente a los cambios educativos que reducen la autonomía y la colaboración. Las profesoras analizan la permanente búsqueda de resultados estandarizados y experimentan una profunda decepción frente a al régimen democrático que instalado al término de la dictadura de Pinochet. Suponemos que estos aspectos organizan la identidad del docente en final de carrera y que nutren una forma de sufrimiento ordinario.
El aporte de los Corresponsales No Bancarios CNB a la inclusión financiera
Authors: Sánchez-González Carlos , Prada-Araque Doris , Erazo-Inca Maria Fernanda
Published: March 2020

Objetivo: Analizar el aporte que realizan los Corresponsales No bancarios (CNB) a la inclusión financiera (InF), considerando las diferentes dimensiones. Método: Estudio de tipo analítico observacional bajo la metodología de encuestas y entrevistas llevadas a cabo en una zona de la población rural aplicada tanto a usuarios como a CNB. Resultados: Los principales hallazgos evidenciaron que los servicios financieros ofrecidos por los CNB reflejan características de acceso, aunque exteriorizando riesgos de liquidez; y por parte de la población objetivo refleja un uso limitado especialmente por la desconfianza y los costos transaccionales. Discusiones: No es del todo claro que la estrategia de los CNB sea la única que se deba impulsar para obtener mayor inclusión financiera en la población desatendida. Los CNB están siendo utilizados en su mayor parte como recaudadores de pagos a empresas públicas y privadas. Conclusiones: Los servicios más utilizados en los CNB no implican la inclusión de la población desatendida. Por otro lado, los servicios como apertura de cuentas básicas, depósitos y retiros relacionados, se sujetan a tarifas que deben ser pagadas por los usuarios y que no diferencian de las tarifas de los servicios de los canales tradicionales de la banca.
Development of a nonlinear model of a three-phase transformer to study the effect of asymmetry of the magnetic system on the operation of the device in arbitrary modes
Authors: Tikhonov A.I. , Stulov A.V. , Karzhevin A.A. , Podobny A.V.
Published: March 2020

Currently, when designing power transformers in order to take into account the influence of the asymmetry of the magnetic system on the operation of the device, especially in transition modes, engineering analysis packages based on field models are increasingly being used. However, such models are slow. At the same time, dynamic transformer models based on the magnetic circuit model are not inferior in accuracy to field models. Existing chain models of a three-phase transformer either do not take into account the asymmetry of the magnetic system or poorly integrate with simulation packages. The purpose of this article is to develop a dynamic model of a three-phase transformer which would allow considering the design features at the design stage, in particular, the asymmetry of the magnetic system and the influence of these features on arbitrary modes of the device operation. A contour current method was used to calculate a non-linear magnetic circuit of a three-rod transformer, and a single-step method based on a modified 2nd order Rosenbrock formula was used to calculate the electrical circuit. A nonlinear dynamic model of a three-phase three-core transformer based on the use of controlled current sources and EMF has been developed. This model is able to integrate with simulation packages including MatLab Simulink SimPowerSystem. The model allows taking into account the influence of the asymmetry of the magnetic system on the transformer operation in various operating modes including emergency and asymmetric ones. The novelty of the developed model can be seen in the approach to constructing a nonlinear matrix of magnetic resistances without explicitly using inductance matrices, which increases the accuracy and stability of the model considering the asymmetry of the magnetic system. The curves of transients in the characteristic operating modes of the transformer are given. The developed models can be used in the design of power transformers, including specific ones. They enable to increase the accuracy of the verification calculation and bring it to the level of simulation modelling. These models can also be applied for constructing digital twins of power transformers taking into account the influence of the design features of transformer equipment on the operation of power grids.
STATE SYMBOL OF RUSSIA AND ALBANIA: COMPARATIVE ASPECT
Authors: Romanenko Y.
Published: March 2020

The purpose of this research is a comparative description of the visual features of the national flags of Russia and Albania as symbols of diffusion of macroidentity, which is expressed in the contradictory vectors of their foreign policy and focus on both European and Asian macroidentity. Based on color semantics, the article analyzes the state flags of Russia and Albania, which, as in state symbols, reveal the features of the geopolitical positioning of states. The connection between the axial symbol of identity – the double-headed eagle – and the bifurcation (diffuseness) of political macroidentity is shown. The features common to the two states are shown: a tendency toward geopolitical isolationism, authoritarian state power, the dependence of the institution of the church on the state and statist atheism, the prevalence of corrupt practices, the emphasis on forced modernization and extraordinary technologies for overcoming situations of foreign political challenges. It is stated that in both countries there is a corruption of power, a sign of which is a fierce struggle for power during most of Byzantine history. It was determined that this struggle was not waged by political methods, but by force – a military coup, uprising or assassination of the current head of state. In the geopolitical position of Albania, this was due to Skannerberg’s attempt to combine two in one: Islamic and Orthodox identities, as well as situational adaptation of the country’s political elite to the next occupier: from 1443, i.e. the years of struggle against Turkish rule and until 1944 the coat of arms acquired alternately Turkish, Austrian, Greek, Italian and Soviet-Russian details. The coat of arms of the Russian Federation also contains Byzantine elements, which indicates a spiritual succession with the Byzantine Empire, however, with less borrowing.