bluuebunny/crossref_metadata_2025_split huggingface dataset:
Abordagem de algoritmos da divisão em livros didáticos de Matemática para os anos iniciais
Authors: Costa André Pereira da , Santos Luciana Ferreira dos , Pessoa Cristiane Azevêdo dos Santos , Teles Rosinalda Aurora de Melo 
Published: April 2018

Investigamos como os algoritmos da divisão de números naturais são abordados em livros didáticos de Matemática dos anos iniciais do Ensino Fundamental; mapeamos atividades nas quais são abordados; e analisamos o uso dos algoritmos da divisão em situações de partição e quotição. Foram analisadas 104 atividades de divisão propostas em seis coleções, escolhidas aleatoriamente, aprovadas pelo PNLD de 2016. Com uma abordagem quantitativa-qualitativa, usamos como método analítico das atividades os procedimentos da análise temática. Os dados mostram que mais de 84% das atividades exploram o processo do algoritmo convencional. Identificamos ausência de atividades que abordem os algoritmos nos 1º e 2º anos. Os algoritmos da divisão começam a ser explorados a partir do 3º ano, geralmente, por meio de divisão exata, e processos longos que envolvem a estimativa e subtração sucessiva. Algumas coleções apresentam atividades que estimulam a construção de argumentos e reflexão sobre as estratégias utilizadas com o uso de algoritmos alternativos pelos estudantes, assim como reflexão sobre o sistema de numeração decimal.Palavras-chave: Divisão. Estruturas Multiplicativas. Algoritmo Convencional.Algorithm approach of division in Mathematics didadic books for the initial yearsAbstract: We investigate how the algorithms of the division of natural numbers are approached in didactic books of Mathematics of the initial years of elementary school, we mapped activities in which they are approached; and we analyze the use of division algorithms in partition and quotation situations. Were analyzed a total of 104 proposed division activities in six collections, randomly chosen, approved by the PNLD of 2016. With a quantitative-qualitative approach, we use as the analytical method of activities the thematic analysis procedures. The data show that more than 84% of the activities explores the process of the conventional algorithm. We identify the absence of activities that address the algorithms in the 1st and 2nd years. The algorithms of the division begin to be explored from the 3rd, usually by means of exact division, and long processes involving successive estimation and subtraction. Some collections present activities that stimulate the construction of arguments and reflection on the strategies used with the use of alternative algorithms by the students, as well as reflection on the decimal numbering system.Keywords: Division. Multiplicative Structures. Conventional Algorithm.
Aplicação do SuperLogo no ensino de Geometria: relato de uma prática no Ensino Médio
Authors: Oliveira Jefferson , De Freitas Madruga Zulma Elizabete 
Published: April 2018

Este artigo apresenta um relato de experiência com o software SuperLogo, fundamentada na Teoria das Situações Didáticas (TSD), abordando conteúdos de Geometria Plana no Ensino Médio. Para tanto, tomou-se como base a teoria de Brousseau (1986), a qual permite ao professor trabalhar junto a seu aluno um conceito matemático na resolução de problemas. A aplicação desta prática deu-se em um colégio da rede pública de uma cidade do sul da Bahia, na realização de uma feira de Ciências. Durante a intervenção, o desempenho dos estudantes com o software foi registrado como dados da pesquisa. Os resultados foram analisados por meio dos registros produzidos no ambiente computacional e uma avaliação realizada no final do processo. Como resultado, considerou-se que o SuperLogo imprimiu potencialidade no ensino da Matemática, destacando que na utilização do software é possível ao professor para motivar seu aluno a expressar seus conhecimentos.
Palavras-chave: Educação Matemática. Tecnologias Educacionais. Situação a-didática. SuperLogo.
Resolução de problemas de otimização nas aulas de Matemática
Authors: Macêdo Josué , Lopes Lailson , Gusmão Laís 
Published: April 2018

Atualmente existem processos de otimização que contribuem com a vida de pessoas, como é o caso dos problemas resolvidos com a ajuda da Matemática. É a maneira técnica de se encontrar meios de minimizar tempo e, consequentemente, reduzir os custos de processos que se precisa realizar. A Matemática, em seu vasto campo de atuação, proporciona um arsenal de processos de otimização que enriquece e facilita o cotidiano. Em vista desta realidade, neste trabalho, apresentamos possíveis aplicações de alguns problemas de otimização, bem como mostramos a resolução de alguns problemas e discutimos a possibilidade da utilização da metodologia da resolução de problemas. Este trabalho permitiu o aprofundamento do conhecimento desse campo da Matemática, e suas contribuições em diversas áreas do conhecimento.
Palavras-chave: Otimização. Problemas. Resolução de problemas.
Country of origin as a determinant of young Europeans` buying attitudes ? marketing implications
Authors: Bartosik-Purgat Małgorzata 
Published: April 2018

Research background: Country of origin and brand image are among the main factors influencing consumer buying decisions. The phenomenon known as the Country of Origin Effect (COE) refers to the influence of a country?s image on consumer product evaluations and the perception of brands originating from specific countries. The COE describes consumer attitudes towards certain product categories and is connected with the perception of quality of such products manufactured in particular markets. The changing market conditions and proliferation of hybrid products cause certain problems for consumers who find it increasingly difficult to identify the country of origin of specific products and face a dilemma whether a product manufactured in China is of equal quality as a product of the same brand, but manufactured in France.
Purpose of the article: The main purpose of the paper is to identify the young Europeans` attitudes towards the country of origin of purchased products. An attempt has been made to answer two research questions: firstly, whether are young Europeans guided by stereotypes associated with the country of origin of specific product categories in their conscious buying decisions? Secondly, do young European consumers attach higher value to a product?s brand than its country of origin?
Methods: The analysis has been based on literature studies and empirical data collected in two different period of time 2008 and 2015 among 1362 respondents (in 2008) and 1125 respondents (in 2015) from eight European countries (Czech Republic, Finland, France, Germany, Poland, Portugal, Spain and Great Britain). In the exploratory empirical study, the author of the paper used two research methods: PAPI in 2008 (Paper and Pen Personal Interview) and CAWI in 2015 (Computer Assisted Web Interview).
Findings & Value added: The study results reveal that in some countries, namely Poland and the Czech Republic, young consumers are guided in their deliberate buying choices by certain mental schematics perpetuated, for example, in the mass media (the best wine comes from France, best watches are made in Switzerland, and superior quality cars originate from Germany). Respondents representing other nationalities showed more support for domestic products. By far, the most ethnocentric in their choices turned out to be the French who in almost all product categories showed preferences for products originating from their country. Furthermore, the empirical study showed that with respect to different product categories young European consumers attach more importance to a product?s brand than its country of origin.
KEKERABATAN 22 KLON BAWANG MERAH BERDASARKAN MARKA MIKROSATELIT (Genetic Relationship off 22 Shallot Clones Base on Microsatelit Marker)
Authors: Pinilih Joko , Rachmadi Meddy , HK Murdaningsih , Qosim Warid Ali 
Published: April 2018

AbstrakBawang merah merupakan komoditas sayuran penting di Indonesia. Tujuan penelitian adalah untuk mempelajari hubungan kekerabatan 22 klon bawang merah. Penelitian dilaksanakan di Balai Besar Penelitian Biteknologi dan Sumber Daya Genetik Pertanian di Bogor. Penelitian dilakukan pada bulan Oktober sampai dengan bulan Desember 2013. Hasil penelitian menunjukkan bahwa Tingkat kemiripan genetik (genetic similarity) dari 22 genotipe yang diuji berkisar antara 0,75 – 0,99, hal ini berarti diantara ke-22 genotipe mempunyai kekerabatan yang dekat.AbstractShallot is important vegetable crops in Indonesia. The aim of research to study genetic relationship of 22 clones shallot with microsatellite molecular markers. Research was conducted at the Research Institute Biotechnology and Agricultural Genetic Resources in Bogor. The study was conducted in October to December, 2013. The results of research showed the genetic similarity of 22 genotypes were closely relationship obout 0.75 to 0.99.
PENGARUH PEMBERIAN DOSIS DAN FREKUENSI BIOFERTILIZER TERHADAP KADAR KLOROFIL DAUN BIBIT SENGON (Paraserianthes falcataria (L.) Nielsen)
Authors: Pranatami Dwimei Ayudewandari , Arum Sekar 
Published: April 2018

Klorofil merupakan komponen penting yang dibutuhkan dalam fotosintesis dimana pembentukanya diperlukan suplai zat hara seperti nitrogen dan fosfat. Suplai zat hara tersebut dapat dibantu dengan pemberian biofertilizer yang mengandung bakteri fiksasi nitrogen, bakteri pelarut fosfat dan mikroba dekomposer. Penelitian ini bertujuan untuk mengetahui pengaruh dosis dan frekuensi pemberian biofertilizer terhadap kadar klorofil bibit sengon (Paraserianthes falcataria (L.) Nielsen). Penelitian terdiri atas 2 perlakuan kontrol dan 8 perlakuan uji. Seri dosis biofertilizer yaitu 20, 40, 60, dan 80 mL/tanaman dengan frekuensi pemberian 1 minggu sekali dan 2 minggu sekali. Mikroba dalam biofertilizer terdiri atas Azotobacter chroococum, Azospirillum brasilense, Rhizobium leguminosarum, Bacillus subtilis, B. megaterium, B. licheniformis, Pseudomonas fluorescens, P. putida, Cellvibrio mixtus, Cellulomonas cellulans, Cytophaga saccharophila, Lactobacillus plantarum, dan Saccharomyces cerevisiae. Penelitian ini menggunakan rancangan acak lengkap (RAL) dan data dianalisis menggunakan uji ANAVA satu arah dengan uji lanjutan yaitu uji Duncan dan uji Brown –Forsythe dengan uji lanjutan Gomes Howell pada taraf 5%. Hasil penelitian menunjukkan bahwa pemberian dosis dan frekuensi biofertilizer berpengaruh nyata dalam peningkatan kadar klorofil daun.
Distinguishing Smilax glabra and Smilax china rhizomes by flow-injection mass spectrometry combined with principal component analysis
Authors: Liang Jian , Zhou Meng , Li Lin-Yu , Shu Ji-Cheng , Liang Yong-Hong , Li Feng-Qin , Xiong Li , Huang Hui-Lian 
Published: April 2018

Abstract
Flow-injection mass spectrometry (FIMS) coupled with a chemometric method is proposed in this study to profile and distinguish between rhizomes of Smilax glabra (S. glabra) and Smilax china (S. china). The proposed method employed an electrospray-time-of-flight MS. The MS fingerprints were analyzed using principal component analysis (PCA) and orthogonal partial least squares discriminant analysis (OPLS-DA) with the aid of SIMCA software. Findings showed that the two kinds of samples perfectly fell into their own classes. Further predictive study showed desirable predictability and the tested samples were successfully and reliably identified. The study demonstrated that the proposed method could serve as a powerful tool for distinguishing between S. glabra and S. china.
Chronic fluoxetine treatment induces lipid accumulation but does not alter the expression of Pref-1 in rat adipose tissue
Authors: Bába László-István , Gáll Zsolt , Bíró István Lóránt , Mezei Tibor , Kun Imre Zoltán , Kolcsár Melinda 
Published: April 2018

Abstract
This study aims to investigate the effects of chronic fluoxetine (FLX) treatment on preadipocyte factor-1 (Pref-1) expression in subcutaneous, visceral and brown adipose tissues, and on the size of vacuoles in a dipocytes obtained from the perirenal regions in rats. Twenty-eight Wistar rats were treated with FLX at two different doses and fourteen animals received vehicle. After 40 days of treatment, the subcutaneous, perirenal and interscapular adipose tissues were collected. Pref-1 expression was examined using an immunohistochemical method and the vacuolar area was measured in stained sections. In the low dose FLX group, the size of vacuoles increased both in male and female animals. The high dose of FLX also induced a significant increase of vacuole size, but only in male animals. Neither of the two doses of FLX has significantly affected the Pref-1 expression in any type of adipose tissue.
Essential oils as potential anti-staphylococcal agents
Authors: Piotr Szweda , Magdalena Zalewska , Joanna Pilch , Barbara Kot , Sławomir Milewski 
Published: April 2018

Abstract
Antibiotic therapy of staphylococcal mastitis is characterized by significantly lower cure rates compared to infections caused by other microorganisms. Thus, it is necessary to search for new, alternative, non-antibiotic agents that are effective in the eradication of these bacteria. The aim of our research was to investigate the antimicrobial, especially anti-staphylococcal potential of a large collection (n=36) of essential oils (EOs). Investigation of the antimicrobial activity of tested oils was determined by using a serial, twofold dilution method in 96-wells microtiter plates under conditions recommended by the Clinical and Laboratory Standards Institute (CLSI). The preliminary analysis revealed that six oils, namely: Manuka, Thyme, Geranium, Cedar, Cinnamon (from bark) and Patchouli exhibited the highest activity against reference strains of bacteria. Significant anti-staphylococcal potential of these oils has been also confirmed for a group of 18 Staphylococcus aureus, 8 Staphylococcus epidermidis and 5 Staphylococcus xylosus strains isolated from cases of bovine mastitis. Especially high activity was observed for Cedar, Patchouli, Thyme and Manuka oils. The MIC (Minimal Inhibitory Concentration) values for Patchouli oil were in the concentrations range of 0.01 to 0.313% (v/v). The three other oils inhibited the growth of staphylococci isolated from mastitis in the concentrations range of 0.01 to 0.625% (v/v). Oils isolated from Cinnamomum cassia and Pelargonium graveolens revealed a bit lower, but still satisfactory activity (MIC values in the concentrations range of 0.02 to 1.25% (v/v) and from 0.078 to 1.25% (v/v), respectively). In many cases a slightly higher concentration of oils was required to obtain the bactericidal effect in comparison to growth inhibition. The time – kill kinetic assay revealed that the bactericidal effect was achieved after two hours incubation of the reference strain S. aureus PCM 2051 cells with Thyme oil at concentration equal to 2xMIC (1.25% (v/v)) or MIC (0.625% (v/v)). A slightly lower activity was observed in the case of Cinnamon oil, the bactericidal effect was achieved after 8 hours of incubation. The results of our research clearly indicate that some essential oils exhibit a promising antimicrobial activity and can be considered as alternative antistaphylococcal agents.
Local government, 2017
Authors: Quinn Bríd 
Published: April 2018

Abstract
Another year, another minister, another renaming of the department! Changes to the cabinet in June 2017 included the appointment of Eoghan Murphy, TD, as Minister for Housing, Planning and Local Government, and John Paul Phelan, TD, as Minister of State at the Department of Housing, Planning and Local Government with Special Responsibility for Local Government and Electoral Reform. Further functional realignment also took place: community functions were transferred to the newly created Department of Rural and Community Development and, at the end of 2017, responsibility for motor taxation was transferred to the Department of Transport, Tourism and Sport. Thus, the centralisation of functions traditionally associated with local government continues.
The Association between Internet Addiction and Emotional Intelligence: A Meta-Analysis Study
Authors: Ranjbar Hossein , Bakhshi Mahmoud 
Published: April 2018

Summary
Recently, internet addiction has turned into a major concern all over the world. According to scientific evidences, people with higher emotional intelligence are less addicted to the Internet; however, the type and strength of this relation is still a matter of debate. Due to a lack of information in this regard, the present study has been conducted as a meta-analysis method to this end.
A comprehensive search in Scopus, Web of Knowledge, ScienceDirect, Medline, Springer, Google Scholar, Magiran and Scientific Information Database (SID) with no restrictions of time and language was done with the following keywords: ‘Internet’/‘Internet users’, ‘Internet addiction’, and ‘emotional intelligence’. Pooled correlation of the present study was −0.393; [95%CI, −0.564−0.190]. The results of the Cochran Q (Q = 623:192, p = 0.000) and I2=97.75% index showed a high heterogeneity between studies included in the meta-analysis. No publication bias was observed.
In general, there was a moderate and inverse relation between Internet addiction and emotional intelligence; however, it seems that there is a relation between some of different personal, social, and cultural traits. Therefore, further studies are needed for the confirmation of the claim put forth.
Delirium Risk Factors in Elderly Patients Suffering from Femoral Neck Fractures
Authors: Milićević Ivana , Janković Slobodan , Grubor Iva 
Published: April 2018

Summary
Delirium is a common complication in hospitalized elderly patients suffering from hip fractures. Considering the growing incidence of delirium, understanding the risk factors for this condition is of great importance. The preoperative prevalence of delirium is approximately 4.4–35.6%, while postoperative prevalence is even higher - 4–53.3%. Various studies have shown the multifactorial etiology of delirium arising from a combination of predisposing and precipitating factors.
The aim of this study was to explore these factors, which can contribute to delirium in patients with femoral neck fractures. This case control study included 62 patients diagnosed with femoral neck fractures, with 31 cases and 31 controls. Results have shown that the use of sedatives, especially benzodiazepines, and smoking increase the risk of delirium by five and sixteen times, respectively.
The Influence of Different Light Curing Modes on the Depth of Cure of the Composite Resin
Authors: Miljković Nikola , Dačić Stefan , Karuntanović Tamara , Igić Marko , Dačić Milica , Dačić-Simonović Dragica 
Published: April 2018

Summary
The aim of this study was to investigate the influence of different light curing modes on the depth of cure of the composite resin.
The metal block with formed round holes served as a mold for the placement of the composite resin. The composite resin was cured with Penguin DB-685 lamp with four optional working modes: strong, low, gradually strong, and flashing. Unpolymerized part of the composite specimen was removed by scraping with a plastic spatula, and then each specimen was placed into the capsule with 1 ml of ethanol alcohol and mixed for 20 s in amalgamator. The length of the remaining composite specimen was measured with the digital caliper with a precision of 0.01 mm. The measured values were divided by 2 (according to ISO 4049 standard) and then statistically processed.
Based on the measured lengths of the polymerized part of the composite specimens, the lowest average value of the depth of cure (2.75 ± 0.08 mm) was determined after polymerization with the low mode and the highest value was obtained (2.98 ± 0.08 mm) with strong polymerization mode. Statistically significant difference (p < 0.05) was determined between low polymerization mode and all other modes (strong, gradually strong and flashing mode).
The observed statistically significant differences are not clinically important because all curing modes provided the necessary depth of cure, which is in accordance with the clinical recommendation of 2 mm thick composite layer.
Emergency Air Rescue System in Romania
Authors: Tranca Sebastian , Szabo Robert , Dache Cătălin , Mureșan Mihai 
Published: April 2018

Abstract
The helicopter, as a means of transport, has facilitated a significant decrease in intervention time at the site of request, increasing the chances of survival of the critical patient. Since 2003, SMURD has managed to form a fleet composed of nine helicopters and two airplanes. From an operational and strategic point of view, the SMURD intervention unit, set up seven Aeromedical Operational Bases (A.O.B.) equipped with helicopters and materials necessary for their operation. There is a dynamic increase in the number of air rescue missions in Romania, with most missions being carried out by the air rescue bases in Târgu Mureş and Bucharest. Specialty literature has clearly demonstrated the positive impact on the survival of critical patients assisted by airborne crews, so it is necessary for the Romanian air rescue system to grow up. It is necessary to increase the number of air bases, purchase new helicopters and to continue the training programs of both pilots and medical personnel.
Determinants of the Adoption of Quality Protein Maize among Farming Households in Niger State, Nigeria
Authors: Ayinde Opeyemi E. , Abdoulaye Tahirou , Ambali Olatunji Y. , Akinsola Grace O. 
Published: April 2018

Abstract
The study was conducted to examine the determinants of quality protein maize (QPM) adoption among farming households in Niger State, Nigeria. A twostage random sampling procedure was employed to obtain data from selected 120 maize farming households. Descriptive statistics, logistic and tobit regression models were used for the analysis. Results of the analysis show that the awareness and adoption level of QPM production in the study area were 95% and 87% respectively. Among the determinants of QPM adoption status, the coefficient of age (-0.12734) and primary occupation (-1.38295) of the respondents were negative and significant at 5% level of probability while the tenancy attribute’s coefficient (2.62533) was positively significant at 10%. The level of adoption of QPM was positively and significantly influenced by household size (0.00729) and years of schooling (0.01148) at 10% and 5% level of significant respectively. The study recommends intensification of information dissemination on the adoption of QPM in the study area.