bluuebunny/crossref_metadata_2025 huggingface dataset:
Joining up the dots: Telling the story of skills. How can students in Higher Education be supported to better understand and articulate their employability?
Authors: De Blaquière Gail , Nolan Jane Elizabeth , Wray Katie
Published: June 2019

Employability is a complex, contested concept which has tended to be considered in terms of a dominant discourse of skills. This article argues that employability needs to be thought of more holistically, as ongoing, life-long, situated learning, whilst acknowledging that the contested language of skills and the need to demonstrate competency through examples is embedded in employers’ recruitment processes. Therefore the ability to articulate what a graduate can offer to employers, framed in terms of skills and expressed in narratives which provide convincing examples, is important in establishing potential employability. Research shows that undergraduate and postgraduate students can find this problematic. In addition, recent scholarship calls for research to create a theoretically informed understanding of why and how interventions aimed at enhancing employability are effective. The authors have researched a diverse range of interventions which have had a positive impact and which are based on the principles of enterprise education and experiential learning. Their findings, based on qualitative and quantitative data collected from participants, suggest that experiential learning can be helpful in enabling students to more confidently articulate their employability by providing examples of skilful practices applied in context. It is unusual for undergraduate (UG) and post graduate (PG) student learning experiences to be considered within the same research project however, the correlation of results and outcomes provides valuable points of reflection. The interventions explored provide examples of ways in which a practice architecture based on experiential learning can support understanding, confidence, metacognition and the creation of narratives, enhancing students' capacity to ‘join up the dots’, and tell the story of their employability.
Interdisciplinary project-based learning as a means of developing employability skills in undergraduate science degree programs
Authors: Hart Joanne Louise
Published: June 2019

Project-based learning units are often used for large scale work integrated learning (WIL) experiences in Liberal Studies Degrees as they offer scalability and sustainability of delivery to large cohorts. This systematic search and review evaluates the effectiveness of interdisciplinary project-based learning in Science Degree programs for developing discipline knowledge and employability skills. Education literature databases were searched for peer-reviewed journal articles that discussed undergraduate science-based degree programs with project-based learning units involving students from multiple disciplines. Data were analysed for evidence of a skill gain in 6 areas (Discipline knowledge, Communication, Teamwork, Interdisciplinary effectiveness, Critical thinking and problem solving, and Self-management). Projects were assigned to categories based on interdisciplinary breadth and depth. Data was analysed by cross-tabulations, Fisher’s Exact test and by calculating odds ratios (OR), which indicate the effect size. Perception of a skill gain was significantly more likely to be reported than an objectively measured skill gain (p<0.001). Real discipline skill gains were 6.6 times more likely in projects narrow in discipline mix (OR 6.6), however perceived discipline skill gains were high irrespective of project type. Projects with wide interdisciplinarity were significantly associated with perceived gains in interdisciplinary effectiveness (OR 32, p<0.05) and more likely to have perceived gains in communication (OR 2.5) and teamwork (OR 3.4) skills. When projects have greater interdisciplinary breadth or depth, perceived student employability skill gains increase, perceived discipline skill gains are unaffected, however actual discipline skill gains are less reported. Further research and evidence that project-based learning is meeting the desired WIL learning objectives of the curriculum is needed.
Geolocalización en las campañas SEM: una mirada al uso de los términos de ubicación en las palabras clave
Authors: Moreno Beltrán Luisa Fernanda , López Torres Katherine Paulina , Lasso Parra Miguel Antonio
Published: June 2019

El objetivo de esta investigación es evaluar el potencial y la efectividad de las palabras clave de longtail de georreferenciación, en el sector específico de la venta de bebidas naturales en Internet por medio de una campaña SEM (Search Engine Marketing). La base teórica proviene de una serie de investigaciones acerca de la clasificación de las palabras clave y el efecto que tiene la ubicación en las campañas de marketing. Para la creación de los anuncios se hizo un análisis de cómo buscaban en Internet las personas que consumen este tipo de producto, los beneficios asociados y los competidores. Se escogieron las palabras con una competencia alta y un buen nivel de búsquedas. Para medir la efectividad de estos términos de búsqueda se decidió correr una campaña de seis anuncios en Google por 10 días. Con el análisis de los resultados identificamos que la característica de geolocalización solo es usada por marcas líderes del mercado y franquicias con presencia en diferentes ciudades.
Testing the therapeutic effects of transcranial direct current stimulation (tDCS) in semantic dementia: A double blind, sham controlled, randomized clinical trial
Authors: Sanches Clara , Levy Richard , Benisty Sarah , Volpe-Gillot Lisette , Habert Marie-Odile , Kas Aurélie , Ströer Sébastian , Pyatigorskaya Nadya , Kaglik Anna , Bourbon Angélina , Dubois Bruno , Migliaccio Raffaella , Valero-Cabré Antoni , Teichmann Marc
Published: June 2019

Background

Semantic dementia is a neurodegenerative disease that primarily affects the left anterior temporal lobe, resulting in a gradual loss of conceptual knowledge. There is currently no validated treatment. Transcranial stimulation has provided evidence for long-lasting language effects presumably linked to stimulation-induced neuroplasticity in post-stroke aphasia. However, studies evaluating its effects in neurodegenerative diseases as semantic dementia are still rare and evidence from double blind prospective therapeutic trials is required.

Objective

The primary objective of the present clinical trial (STIM-SD) is to evaluate the therapeutic efficacy of a multiday transcranial direct current stimulation (tDCS) regime on language impairment in patients with semantic dementia. The study also explores the time course of potential tDCS-driven improvements and uses imaging biomarkers which could reflect stimulation-induced neuroplasticity.

Methods

Double-blind sham-controlled randomized study using tDCS applied daily during 10 days, and language/semantic and imaging assessments at 4 time-points: baseline, 3 days, 2 weeks and 4 months after the 10 stimulation sessions. Language/semantic assessments will be applied at the 4 time-points. Fluorodeoxyglucose Positron Emission tomography (FDG-PET), resting-state functional Magnetic Resonance Imaging (rs-fMRI), T1-weighted images and white matter diffusion tensor imaging (DTI) will be applied at baseline and the two-weeks’ time-point. According to the principle of inter-hemispheric inhibition between left (language-related) and right homotopic regions we will use two stimulation modalities: left-anodal and right-cathodal tDCS over the anterior temporal lobes. Accordingly, the patient population (n=60) will be subdivided into 3 subgroups: left-anodal tDCS (n=20), right-cathodal tDCS (n=20) and sham tDCS (n=20). The stimulation duration will be sustained for 20 minutes at an intensity of 1.59 mA. It will be delivered through 25cm2 round stimulation electrodes (current density of 0.06 mA/cm2) placed over the left and right anterior temporal lobes for anodal and cathodal stimulation, respectively. A group of age, gender and education-matched healthy participants (n=20) will also be recruited and tested to provide normative values for the language/semantic tasks and imaging measures.

Discussion

The study aims at assessing the efficacy of tDCS for language/semantic disorders in semantic dementia. A potential treatment would be easily applicable, inexpensive, and renewable when therapeutic effects disappear due to disease progression.
Translation and validation of the Revised Dental Beliefs Questionnaire (DBS-R) in China
Authors: Wu Lei , Buchanan Heather
Published: June 2019

Background

Patient perceptions of behaviours and attitudes of dentists are associated with dental fear and poor dental attendance in Western countries. However, there is a paucity of research exploring patients' perceptions of the dentist in China. One reason for this may be the lack of a valid and reliable scale in Chinese (Standard Mandarin) to measure this. This study aimed to translate the Revised Dental Beliefs Survey (DBS-R) into Chinese and then explore the reliability and validity of this measure (both the short and longer versions) in a Chinese population.   Methods: We translated the DBS-R using the forwards-backwards method and pilot tested it on a small sample of adults in China. Following this, 480 Chinese adults completed the newly translated scale, as well as well as a standardised dental anxiety questionnaire (the Modified Dental Anxiety Scale Chinese version) to test convergent validity. 109 participants completed the DBS-R again 2 weeks later for test-retest reliability.  Results: Both versions of the Chinese DBS-R were internally consistent, demonstrated convergent validity and test-retest reliability was good.

Conclusion

Although both versions of the scale performed similarly, it is suggested the 28-item version may be the scale of choice as this version has items relating to the technical competence of the dentist which appear important to Chinese adults. Future research in China should test this measure in the clinical context.
Towards standardized clinical training: Developing an integrated clinical curriculum for dental trainees in a hospital of stomatology
Authors: ZHANG Chang-yuan , Chen Fa , Wang Shan-Zhi , Yu Hao , Cheng Hui , Chen Jiang
Published: June 2019

Objective

In order to standardize the teaching criterion and improve the quality of clinical training between different dental trainees, an integrated clinical curriculum was developed since September 2014 in the Hospital of Stomatology, Fujian Medical University of China. This article aimed to introduce the development of this curriculum and evaluate the dental trainees’ view on the curriculum.

Methods and analysis

A six-step approach was used to develop the curriculum. Dental trainees (n=142) rated the curriculum with satisfaction scores on a Likert-type scale and answered several open-ended questions. One-way ANOVA and Fisher's exact probabilities were utilized to analyzed satisfaction scores among four types of dental trainees.

Results

The mean satisfaction scores was 7.96 (out of 10). There was no significant difference in satisfaction scores among four types of dental trainees (P=0.209) and between the two genders (P=0.233). 91.55% of the dental trainees reckoned that the curriculum was valuable to their clinical training. There was no significant differences among the four types of dental trainees in terms of helpfulness to promote and standardize their clinical skills training (P=0.828).

Conclusions

The present findings suggest that the dental trainees appreciated the integrated clinical curriculum. This integrated curriculum is considered suitable for current condition of dental clinical training in China.
Effectiveness of flipped classroom combined with team-, case-, lecture- and evidence-based learning on ophthalmology teaching for eight-year program students
Authors: Ding Chun , Li Shengguo , Chen Baihua
Published: June 2019

Background

This study aimed to investigate the benefits and challenges of the flipped classroom combined with team-, case-, lecture- and evidence-based learning (FC-TCLEBL) for ophthalmology teaching for eight-year program students.

Methods

FC-TCLEBL and the traditional lecture-based classroom (LBC) were compared based on student and teacher feedback questionnaires, student learning burden, and scores on standardized tests as well as their effects on the abilities of clinical thinking, scientific research, active-learning, practical application, humanistic care and communication with patients.

Results

Both the students and teachers were more satisfied with the FC-TCLEBL model. More students in the FC-TCLEBL group agreed that the course helped them to develop skills in creative thinking, problem solving, and teamwork. Students in the FC-TCLEBL group spent significantly more time preparing for class than those in the LBC group, but the time spent on review was significantly lower in the FC-TCLEBL group. The students from the FC-TCLEBL group performed better in a post-test on diabetic retinopathy (DR) as compared to the LBC group.

Conclusions

The addition of team-, case-, lecture- and evidence-based learning (TCLEBL) is helpful for improving the flipped classroom (FC) and reducing the student learning burden.
Examination of the Extreme Response Style of Students using IRTree: The Case of TIMSS 2015
Authors: İLGÜN DİBEK Münevver
Published: June 2019

In the literature, response style is one of the factors causing an achievement-attitude paradox and threatens the validity of the results obtained from studies. In this regard, the aim of this study is two-fold. Firstly, it attempts to determine which item response tree (IRTree) models based on the generalized linear mixed model (GLMM) approach (random intercept, random intercept with the fixed effect of extreme response and random intercept-slope model) best fit the Trends in International Mathematics and Science Study (TIMSS) 2015 data. Secondly, it purports to explore how the extreme response style affects students’ attitudes toward mathematics of students. This study is both basic research and descriptive research in terms of seeking for answers for two different research questions. For the sample of this research, 15 countries were randomly selected among countries participated in TIMSS 2015. The students’ responses to items measuring attitude in the student questionnaire were analyzed with the packages “lme4” and “irtrees” in R software. When the model fit indices were evaluated, the random intercept-slope model was found to be the best fit to the data. According to this model, the extreme response style explains a significant amount of variances in the students’ attitude toward mathematics. Additionally, students with a negative attitude toward mathematics were found to have an extreme response style. It was concluded that an extreme response style had an effect on students’ attitude.
Non-destructive analysis of photosynthetic pigments in Avena strigosa and Avena sativa
Authors: Kaspary Tiago Edu , Cutti Luan , Bellé Cristiano , Casarotto Gabriele , Groth Mártin Zanchett , Da Silva Gerarda Beatriz Pinto , De Aguiar Adalin Cezar Moraes
Published: June 2019

Chlorophylls and carotenoids are the main photosynthetic pigments in plants. The photosynthetic potential of crop plants is used to determine the correct rate of nitrogen fertilization. To date, no studies have been conducted to understand the relationship between different methods of measurement of photosynthetic pigments in oats. The objective of this study was to quantify and compare the levels of photosynthetic pigments in Avena strigosa and A. sativa using two different methods, the extraction method and portable chlorophyll meter, and to determine whether the results of these two methods showed a significant correlation. Photosynthetic pigments were measured using both methods in a greenhouse and the laboratory at four developmental stages: tillering [28 days after sowing (DAS)], vegetative stage I (55 DAS), vegetative stage II (75 DAS), and reproductive stage (120 DAS). The same leaves were used to measure the relative chlorophyll content using a portable chlorophyll meter and extractable chlorophyll using the laboratory extraction method. The readings of the chlorophyll index differed for each developmental stage of both A. sativa and A. strigosa. The contents of chlorophyll a, chlorophyll b, and carotenoids determined using the extraction method showed high coefficients of correlation with the total chlorophyll index determined using the portable chlorophyll meter. Thus, the measurement of chlorophyll using the portable chlorophyll meter can be used for the accurate evaluation of the photosynthetic potential of oats, thus saving time and reagents.
Phenotypic diversity of the tidal swamp rice (Oryza sativa L.) germplasm from South Kalimantan, Indonesia
Authors: Mursyidin Dindin H. , Purnomo  , Sumardi Issirep , Daryono Budi S.
Published: June 2019

Tidal swamp rice is a valuable source for developing new rice cultivars in the future because they possess some important traits for, adapted to a wide range of abiotic and biotic stresses. In this study, twenty-seven cultivars of the tidal swamp rice, comprising 26 from the South Kalimantan and one of Sumatera Island, Indonesia (an outgroup), were characterized phenotypically. Following Biodiversity International procedure, 14 qualitative and 15 quantitative traits were observed. The results show that this germplasm has a unique diversity in phenotypic traits. The secondary branch of panicle was the highest diversity of qualitative traits with an index of 0.93. Similarly, the plant height was the highest for quantitative traits (0.70). The correlation analysis confirmed that plant height, strongly correlated to culm diameter, the number of tillers and grain ratio. The PCA indicated that several independent traits, such as coleoptile anthocyanin coloration, basal leaf sheath color, and grain length, have positively contributed to the diversity, accounting 62.99%. Based on PCA analysis, the tidal swamp rice were clustered into four groups. According to UPGMA, this germplasm separated into six main groups, where Sardani (an outgroup) was very closely related to Lakatan Pacar and most distantly to Siam Perak. This information would be useful for the future rice breeding program, particularly in developing new rice cultivars in the tidal swamp areas.
Agro-biological and economic efficiency in a beetroot (Beta vulgaris L.) production system fertilized with hairy woodrose (Merremia aegyptia (L.) Urb.) as green manure
Authors: Silva Italo Nunes , Neto Francisco Bezerra , Júnior Aurélio Paes Barros , Lima Jailma Suerda Silva de , Chaves Aridênia Peixoto , Nunes Renato Leandro Costa , Lins Hamurábi Anizio , Albuquerque José Ricardo Tavares de
Published: June 2019

Beetroot (Beta vulgaris L.) is a tuberous vegetable that is under experimentation in the vegetable production system in Rio Grande do Norte state (Brazil). It is quite demanding, in nutritional terms. One of the alternatives to meet this need is green manuring using spontaneous species of the Caatinga biome. The aim of the present work was to optimize the agro-biological performance and economic profitability of the beetroot 'Early Wonder', fertilized with different doses of hairy woodrose (Merremia aegyptia (L.) Urb.) in this semi-arid environment. Hairy woodrose is a spontaneous species of the Caatinga biome that is widely distributed, being found in forests, fences, forest clearings and fields, growing in soils of different textures, producing biomass with a high content of macronutrients. This material was collected from spontaneous vegetation, native to the region, and used as green manure.The experimental design was a randomized complete block, with four treatments and five replicates. The treatments consisted of four amounts of hairy woodrose biomass incorporated into the soil (10, 25, 40 and 55 t ha-1 of dry matter). The following agronomic characteristics were evaluated in each beetroot treatment: plant height, fresh mass of shoots, number of leaves per plant, dry mass of shoots and dry mass of roots, total and commercial root productivity, and root productivity classified into scrap and extra roots, extra A roots, extra AA and great roots. Apart from these characteristics, the following economic indicators were also determined for each treatment: gross income, net income, rate of return and profit margin. The maximum agro-biological efficiency of beet root productivity (22.68 t ha-1) was obtained from 44.92 t ha-1 of hairy woodrose biomass added to the soil. The maximum economic efficiency of the yield of beet roots was achieved as a net income of AU$2,491.00 (R$6,406.36) ha-1, provided by the production of 22.04 t ha-1 of commercial roots, using 37.03 t ha-1 of hairy woodrose biomass incorporated into the soil. The use of hairy woodrose as green manure presents agro-economic feasibility in beet cultivation in this semi-arid environment.
Physiological and agronomic behavior of commercial cultivars of oil palm (Elaeis guineensis) and OxG hybrids (Elaeis oleifera x Elaeis guineensis) at rainy and dry seasons
Authors: Rodriguez Cristihian Jarri Bayona , Romero Hernán Mauricio
Published: June 2019

Oil palm is the most productive and efficient oilseed crop in the world. Oil palm is planted in various geographical areas, where the frequency of extreme weather events is expected to increase because of climate change. The characterization of the response of oil palm cultivars to climatic conditions will allow identifying sources of tolerance to different types of stress caused by climate change, leading to the determination of the best genotype x environment relationships. The physiological responses, oil quality and yield of 11, six-year-old commercial oil palm cultivars with different origins were evaluated in two periods of contrasting climate conditions (rainy and dry seasons between the years 2008 and 2010). We found that the first impact of a period with water deficit was the reduction on gas exchange of all cultivars. Photosynthesis fell between 25% to 40% and transpiration decreased between 10% and 50%. During the dry season, leaf sugar concentration increased respect to the rainy season between 14% to 114%, and certain cultivars showed up to 27% higher photosynthetic water use efficiency. This variation could be due to the genetics of different cultivars. No significant differences were observed between the seasons in terms of oil quality. In general, changes in oil palm physiology observed in response to water deficit were related to the ability of the palm to adapt and survive periods of drought stress. The cultivars evaluated showed a good response to dry periods, with the IRHO being the most outstanding at each evaluated season .
Quality of dried banana produced from three cultivars 'Prata-Anã', 'FHIA-18'and 'BRS Platina' under different irrigation levels
Authors: Martineli Maristella , Pereira Kennia Karolline Gonçalves , Santos João Rafael Prudêncio dos , Castricini Ariane , Oliveira Polyanna Mara de , Maranhão Camila Maida de Albuquerque , Maia Victor Martins , Rocha Luciana Albuquerque Caldeira
Published: June 2019

This study aimed to evaluate the influence of different levels of irrigation on the quality parameters involved in the dried-bananas production from 3 different cultivars. The experimental design was a completely randomized factorial 3 x 3, with three genotypes of bananas (Prata-Anã, FHIA-18 and BRS Platina) produced in the semi-arid region of Minas Gerais.) and three irrigation levels (50, 75 and 100% of crop evapotranspiration - ETC), with three replications. For the processing purpose, the fruits were selected at the maturity stage 6. Then they sanitized in hypochlorite of sodium solution at 100 mg L-1, peeled and dehydrated through the drying convective method with hot air, in dryer with forced air, in dryer with forced air circulation at 65ºC for 24 hours. The dried bananas were evaluated according to the following physical and chemical aspects: moisture, length, diameter, firmness, color (brightness, chroma and ºHue), soluble solids and titratable acidity, and sensory characteristics: purchase intention and acceptance. The humidity, length, diameter, firmness, color and acidity of dried bananas were influenced by the different studied irrigation levels. In the sensory evaluation, the best result regarding appearance, color, texture and flavor requirements was observed in banana processed from 'Prata-Anã' irrigated with the total level of water (100%). The dried banana processed from 'BRS Platina' was the least accepted in the sensory tests.
Análise multivariada da produtividade do agronegócio brasileiro nos anos de 2002-2013
Authors: Schrippe Patrícia , Souto Bolzan Medeiros Flaviani
Published: June 2019

No cenário mundial o Brasil é um dos líderes, tanto na produção como exportação de muitos produtos agropecuários, portanto, o setor do agronegócio possui um papel muito importante na economia brasileira. Desse modo, este estudo objetiva analisar as relações da produtividade do agronegócio brasileiro. Metodologicamente, foi realizada uma análise multivariada utilizando os dados divulgados pela Pesquisa Industrial Mensal de Produção Física (PIM-PF) disponíveis no website do Instituto Brasileiro de Geografia e Estatística (IBGE, 2017) acerca da produtividade brasileira quanto à agricultura, pecuária e agroindústria. Para isso, foram coletados dados mensais de janeiro de 2002 a dezembro de 2013 referentes à produção nacional de 25 variáveis. Para análise dos dados recorreu-se a dois métodos multivariados: (i) análise de cluster adotando o método de Ward com medida de similaridade a distância euclidiana e, (ii) Análise de Componentes Principais utilizando a rotação Varimax. Os resultados apontam a existência de inúmeros fatores, todavia apenas dois estatisticamente confiáveis usando o ? de Cronbach, sendo que o primeiro é composto por variáveis predominantemente agrícolas e o segundo relaciona-se ao setor pecuário.
Influência do nível de intangibilidade no desempenho das companhias brasileiras
Authors: Silva Aline Romão da , Cunha Callado Aldo Leonardo , Bomfim Emanoel Truta do
Published: June 2019

Os estudos científicos sobre ativos intangíveis vêm aumentando consideravelmente emrazão da possibilidade de que estes ativos possam estar associados com a composição do valor da empresa. A partir disso, a presente pesquisa buscou investigar a relação entre o grau de intangibilidade de companhias brasileiras com o desempenho corporativo, mensurado pelos indicadores de retorno dos ativos, retorno sobre o patrimônio líquido e retorno sobre os investimentos. A amostra foi constituída por empresas que apresentaram dados disponíveis para a realização do estudo e que estiveram ativas durante o período de 2008 a 2016. A pesquisa classifica-se como sendo descritiva e quantitativa. Para atingir os objetivos propostos nesta pesquisa foi utilizada a análise descritiva das variáveis e o Coeficiente de Spearman, a partir do qual se investigou a existência de relações entre os ativos intangíveis das companhias e o desempenho coorporativo. Além disso, as empresas foram agrupadas em intensamente tangíveis e intangíveis a partir da análise da mediana do grau de intangibilidade. Os resultados da pesquisa evidenciaram a importância dos ativos intangíveis no desempenho financeiro das empresas e que, mesmo não sendo, em muitos casos, reconhecidos nas demonstrações contábeis, estes ativos possuem um potencial para gerar benefícios econômicos futuros para as empresas. A análise de correlação também sugeriu que os ativos intangíveis possuem um potencial de benefícios econômicos para as entidades, podendo influenciar no nível de lucratividade das organizações.
Terceirização no processo de produção, estudo de caso em micro e pequenas empresas de marcenaria
Authors: Abreu Armando , Picchiai Djair
Published: June 2019

As micro e pequenas empresas (MPEs) do setor de móveis sobre medida são organizações que sobrevivem por décadas utilizando a mesma tecnologia e procedimentos internos de produção, com escassez de recursos operacionais e financeiros. Gradativamente, as pequenas marcenarias têm buscado alternativas de mudança em seus processos de fabricação de móveis utilizando a terceirização como forma de evolução e sobrevivência. O objetivo deste trabalho foi entender como o processo de terceirização da produção de móveis pode ser capaz de representar para o segmento de MPEs de marcenaria, um caminho para melhoria do atendimento das necessidades dos seus consumidores e por consequência, dos resultados esperados pelo pequeno empresário, bem como diminuir seus riscos. Para responder aos objetivos deste trabalho, foi realizado um levantamento junto a 60 empresários marceneiros na cidade de São Paulo, por meio de uma pesquisa qualitativa descritiva e explicativa. Observou-se que podem existir melhorias na gestão das empresas que praticarem parcial ou integralmente o processo de terceirização, trazendo como principal resultado, o foco nas atividades mais relevantes da empresa, e adicionalmente reduzindo seus custos, aumentando a produtividade, reduzindo tempos de entrega dos produtos, dentre outros benefícios. A disponibilização de tempo gerado ao proprietário marceneiro pelo processo de terceirização permite que ele possa tomar conhecimento de novas tecnologias, design de produtos. Como pontos desfavoráveis destacam-se a resistência à mudança dos proprietários, erro na escolha da empresa terceirizada, alterações nas regras de comercialização quando o fornecedor perceber dependência, e falta de regras no relacionamento entre a empresa de marcenaria e o terceirizado.
Análise e previsão da taxa de inflação no Brasil: uma abordagem via modelo SARIMA
Authors: Constantino Michel , Mendes Dany Rafael Fonseca , Moreira Tito Belchior Silva
Published: June 2019

O presente artigo teve por objetivo analisar o comportamento, entre 2007 e 2017, e a previsão da taxa de inflação no Brasil. Os indicadores econômicos influenciam diretamente nas decisões estratégicas das empresas públicas e privadas, e, neste contexto, é fundamental avaliar os dados, na tentativa de prever os comportamentos futuros de tais números. Os resultados estimados por meio do Modelo SARIMA podem auxiliar em futuras eliberações, pois, para a taxa de inflação brasileira, sua eficiência aponta 95% de acerto na tendência relativa aos próximos anos. A estimativa de previsão, utilizando o modelo sazonal, prevê um aumento da taxa de inflação para os próximos anos, seguindo uma provável retomada de crescimento do Brasil.
Upper echelon characteristics and the use of management control systems: an integrative review
Authors: Teles João , Mendes Alcindo Cipriano Argolo , Lunkes Rogério João
Published: June 2019

Top management teams use Management Control Systems (MCS) to guide the performances of their subordinates and also the decisions made by them, promoting and implementing strategies based on the organizational behavior. The choices made by upper echelon members can determine how the organizational goals will be achieved by using MCS. This integrative review aims to examine the literature addressing the ways in which upper level executives use Management Control Systems in organizations, highlighting and categorizing the expected linkage between the use of MCS and upper echelons characteristics. The results allowed a synthesis of the theme based on the identification of a taxonomy for top managers’ characteristics that have influenced on MCS usages, as well as some provocative questions as a way of reflection for future researches.
Desconocimiento de las obligaciones del régimen tributario especial (ESAL)
Authors: Hernandez Diego Fernando , Gonzales Marín Yesid Oswaldo
Published: June 2019

Las entidades sin Ánimo de Lucro (ESAL) que desarrollan su actividad principal para el beneficio social han venido en aumento desde hace unos años, pero la problemática central se presenta debido al mal enfoque que se le da a esta figura no solo en las obligaciones tributarias que tienen sino también en su funcionamiento, donde es importante que se ejerza control de la información y la gestión que implementan estas entidades, la distribución de sus recursos y el manejo que le dan a su objeto social principal; los contribuyentes que pertenecen a este Régimen deberían dar a conocer de manera pública los mecanismos que utilizan en el desarrollo de su actividad; lo cual permitirá brindar confianza y transparencia a usuarios de la información y a su vez contribuir con la no elusión y evasión de impuestos.
Crecimiento en diámetro de tres especies arbóreas en una selva secundaria de Quintana Roo, México
Authors: Pineda-Herrera Elizandro , Carreón-Santos Roy Jabin , Valdez-Hernández Juan Ignacio , Interian-Kú Víctor Manuel
Published: June 2019

Bursera simaruba, Lysiloma latisiliquum y Piscidia piscipula son tres especies de las selvas subperennifolias de Quintana Roo que son valoradas favorablemente por su madera. Para seguir incentivando su aprovechamiento y conservación, así como su conocimiento ecológico, se requiere determinar la tasa de crecimiento anual y los factores que lo modulan. En el presente estudio se midió el crecimiento en diámetro de Bursera simaruba, Lysiloma latisiliquum y Piscidia piscipula, en selvas secundarias medianas subperennifolias del ejido Andrés Quintana Roo, Quintana Roo. Setenta y tres árboles fueron categorizados en cinco intervalos de diámetro y medidos cada dos meses, empleando bandas dendrométricas; el estudio abarcó desde enero de 2011 hasta mayo de 2012. Los incrementos se correlacionaron con la precipitación, temperatura promedio del aire y humedad relativa locales. Los incrementos se ajustaron a un modelo polinómico de tercer orden. L. latisiliquum presentó la tasa de crecimiento promedio anual más alta (0.18 cm), seguida por P. piscipula (0.10 cm) y por B. simaruba (0.06 cm). Las categorías diamétricas de las tres especies presentaron diferencias significativas en sus incrementos; las de 20 cm, de forma general, crecieron más que las restantes. Los incrementos se correlacionaron de forma significativa (p ≤ 0.01) con la temperatura en las tres especies; la precipitación y la humedad relativa no tuvieron una influencia marcada en el engrosamiento del fuste. La presente investigación demostró tres patrones distintos de crecimiento, distinguiendo a la temperatura como un factor de influencia en el aumento del diámetro.
Design and Implementation of SCADA System for Sugar Production Line
Authors: Abdulsattar Noor N. N. , Mustafa Faiz F. , Hadi Suha M.
Published: June 2019

SCADA is the technology that allows the operator to gather data from one or more various facilities and to send control instructions to those facilities.  This paper represents an adaptable and low cost SCADA system for a particular sugar manufacturing process, by using Programmable Logic Controls (Siemens s7-1200, 1214Dc/ Dc/ Rly). The system will control and monitor the laboratory production line chose from sugar industry. The project comprises of two sections the first one is the hardware section that has been designed, and built using components suitable for making it for laboratory purposes, and the second section was the software as the PLC programming, designing the HMI, creating alarms and trending system. The system will have two HMI screens according to the two operating states of system (Automatic and Manual), the operator can choose between them by a selector switch, this method helps the operators when fixing a failure and wanting to check it without operating all the process. The result has accomplished the goals of controlling, the parameters (temperature, flow, humidity) were monitored, failure was detected by an alarm.
Investigation the Influence of SPIF Parameters on Residual Stresses for Angular Surfaces Based on Iso-Planar Tool Path
Authors: Abdulrazaq Mustafa Mohammed , Gazi Safaa Kadhum , Ibraheem Marwa Qasim
Published: June 2019

Incremental Sheet Metal Forming (ISMF) is a modern sheet metal forming technology which offers the possibility of manufacturing 3D complex parts of thin sheet metals using the CNC milling machine. The surface quality is a very important aspect in any manufacturing process. Therefore, this study focuses on the resultant residual stresses by forming parameters, namely; (tool shape, step over, feed rate, and slope angle) using Taguchi method for the products formed by single point incremental forming process (SPIF). For evaluating the surface quality, practical experiments to produce pyramid like shape have been implemented on aluminum sheets (AA1050) for thickness (0.9) mm. Three types of tool shape used in this work, the spherical tool gave higher residual stresses than other types, also three levels for each of step over and feed rates utilized. It found that residual stresses was raised up with increasing the step over and feed rate values, the effect of these variables studied on two slope angles. By using analysis of variance method (ANOVA) found that the most influential parameter is step over with (59.18%) and (65.42%) for both slop angles; (α=45°) and (α=55°) respectively.
Effect of Quenching Media Variations on the Mechanical Behavior of Martensitic Stainless Steel
Authors: Hussein Abbas Kh. , Abbas Laith K. , Hasan Wisam N.
Published: June 2019

The purpose of this study is designate quenching and tempering heat treatment by using Taguchi technique to determine optimal factors of heat treatment (austenitizing temperature, percentage of nanoparticles, type of base media, nanoparticles type and soaking time) for increasing hardness, wear rate and impact energy properties of 420 martensitic stainless steel. An (L18) orthogonal array was chosen for the design of experiment. The optimum process parameters were determined by using signal-to-noise ratio (larger is better) criterion for hardness and impact energy while (Smaller is better) criterion was for the wear rate. The importance levels of process parameters that effect on hardness, wear rate and impact energy properties were obtained by using analysis of variance which applied with the help of (Minitab18) software. The variables of quenching heat treatment were austenitizing temperature (985 C˚,1060 C˚),a soaking times (50,70 and 90 minutes) respectively, Percentage of volumetric fractions of nanoparticles with three different levels(0.01, 0.03 and 0.08 %) were prepared by dispersing nanoparticles that are  (α-Al2O3,TiO2 and CuO) with base fluids (De-ionized water, salt solution and engine oil).The specimens were tempered at 700°C after quenching of nanofluids for  (2 hours).The results for ( S/N) ratios showed the order of the factors in terms of the proportion of their effect on hardness, and wear rate  properties as follow: Austenitizing temperature ( 1060 C˚),Type of base media (salt solution), Nanoparticles type (CuO), Percentage of nanoparticles (0.08%) and Soaking time(90min) was the least influence while for the impact energy were as follows: Type of base media (oil), Austenitizing temperature (985C˚), Percentage of nanoparticles (0.01%), Nanoparticles type (α-Al2O3) and last soaking time (50min).
Mesoporous Silica MCM-41 as a Carriers Material for Nystatine Drug in Delivery System
Authors: Albayati Talib M. , AlKafajy Ali M.
Published: June 2019

In the present study, MCM-41 was synthesis as a carrier for poorly drugs soluble in water, by the sol-gel technique. Textural and chemical characterizations of MCM-41 were carried out by X-ray diffraction (XRD), Fourier transform infrared (FTIR), scanning electron microscope (SEM), and thermal gravimetric analysis (TGA). The experimental results were analyzed mesoporous carriers MCM-41. With maximum drug loading efficiency in MCM-41 determined to be 90.74%. The NYS released was prudently studied in simulated body fluid (SBF) pH 7.4 and the results proved that the release of NYS from MCM-41 was (87.79%) after 18 hr. The data of NYS released was found to be submitted a Weibull model with a correlation coefficient of (0.995). The Historical data experimental design facilitated the formulation and optimization of sustained discover the optimal formulation to loading drug, combine process variables, mixture components and categorical factors in one design.
Rheological and Thermal Properties of Lubricating Oil Enhanced by the Effect of CuO and TiO2 Nano-Additives
Authors: Sukkar Khalid A. , Karamalluh Abullhassan A. , Jaber Thulfiqar N.
Published: June 2019

The specifications of lubricating oil are fundamentally the final product of materials that have been added for producing the desired properties. In this research, spherical nanoparticles copper oxide (CuO) and titanium oxides (TiO2) are added to SAE 15W40 engine oil to study the thermal conductivity, stability, viscosity of nano-lubricants, which are prepared at different concentrations of 0.1%, 0.2%, 0.5%, and 1% by weight, and also their pour point, and flash point as five quality parameters. The obtained results show that CuO nanoparticles in all cases, give the best functionality and effect on engine oil with respect to TiO2. With 0.1 wt. % concentration, the thermal conductivity of CuO/oil and TiO2/oil increased by 7.27% and 4.54%, respectively. In the same time, the flash point of them increased by 12.62% and 9.3%, respectively in comparison with parent oil.
The Ramifications of Bullying in Lesotho Schools
Authors: Makafane Teboli David
Published: June 2019

This paper is based on a bigger study undertaken in 2017. It focuses on the ramifications of bullying in Lesotho schools. A qualitative research design was adopted to probe for in-depth information about consequences of bullying in schools. The methodology employed was the case study approach in two high schools in the Roma Valley. The population of the study was all teachers and students in the two high schools in Roma valley, while the sample comprised six teachers and eight students, who were purposively selected.The study found out that bullying has negative consequences to all parties; perpetrators, victims and bystanders. The finding of the study revealed that bullying contributes to depression and low self-esteem, which can lead to poor school performance and suicidal tendencies amongst the victims and bystanders. The study therefore recommends that Lesotho government should come up with a policy to eliminate bullying in schools and establish programmes directed at teaching learners attitudes, knowledge and skills which they can use to circumvent bullying.
PRIMARY SCHOOL STUDENTS' ABSTRACTION LEVELS OF WHOLE-HALF-QUARTER CONCEPTS ACCORDING TO RBC THEORY
Authors: Sumen Ozlem Ozcakir
Published: June 2019

Whole-half-quarter are important mathematical concepts that form the basis of fractions and should be well understood for advancing mathematical topics. The aim of this study is to determine the primary school students' abstraction levels of whole-half-quarter concepts according to RBC theory. The participants of the study are six students (8 age group) from the second grade of primary school. The data of the research which is a case study were collected through worksheets and semi-structured interviews. The data obtained from interviews were analyzed by qualitative data analysis steps. The abstraction levels of students were evaluated according to RBC theory. As a result of the study, it was seen that many of the students could not abstract the whole, half and quarter concepts. It was determined that difficulties of students to abstract the whole-half-quarter concepts resulted from reasons such as not understanding the half and quarter concepts, not being able to divide the whole into two equal parts, not being able to divide one dimensional shapes into half and quarter, generalizing dividing into quarter as putting a "+", not being able to divide into four equal parts for quarter.
Clinical, Hormonal, and Ultrasound Characteristics of Patients with Newly Diagnosed Graves’ Disease And Different Thyroid Antibody Profiles
Authors: Mekova R. , Boyanov M.
Published: June 2019

Objective: Graves’ disease (GD) is characterized by elevated TSH-receptor antibodies (TRAb) and less often – thyroid peroxidase (TPOAb) and thyroglobulin antibodies (TgAb). Our aim was to examine the hormonal and ultrasound characteristics of patients with newly diagnosed GD with differing positive thyroid antibodies.

Materials and Methods: This study included 249 patients with newly diagnosed GD (191 women, 58 men). 40.2% of them had Graves’ ophtalmopathy. The serum levels of TSH, free T4, free T3, TRAb, TPOAb, and TgAb were measured with third generation ECLIA assays (Roche Diagnostics, Switzerland). Thyroid ultrasound was performed with a Fukuda-Denshi 550 device (Fukuda Corp., Japan) and an Ultrasonix device (Ultrasonix Medical Corp., Canada). Statistical analyses were done using the SPSS 23.0 statistical package (Chicago, IL).

Results: 64% of the patients were TPOAb+ and 36% − TgAb+. One third were only TRAb+, 1/3 had two positive antibodies (TRAb + second antibody) and 1/3 – all three positive antibodies. Patients with more positive antibodies tended to be younger, had higher fT4, TRAb levels, thyroid volume but rarely had nodules on US and accompanying GO. Positive TPOAb antibodies were found in younger patients, with higher fT4 and TRAb levels, higher thyroid volume and lower prevalence of nodules and GO. The same trends were found in patients with positive TgAb.

Conclusion: The different characteristics of GD patients with varying thyroid antibody profiles may be due to a variation in the pathogenesis of the disease. An individualized clinical approach may be suitable in those cases.
Altered Gabab Receptor Thermoregulatory Function in Rats with Diet-Induced Obesity
Authors: Hristov M. , Yakimova Kr.
Published: June 2019

GABAB receptors are G-protein-coupled receptors, playing a very important role in the regulation of many physiological processes. The GABAB signaling pathway could modulate neurotransmission processes at the level of the preoptic area in the anterior hypothalamus, which is thought to function as the thermoregulatory center. The present study was performed to investigate the effects of GABAB agonists and antagonists on core body temperature of rats with normal weight and diet-induced obesity. The results showed that systemic administration of the GABAB antagonist CGP35348 induced significant hyper-thermia in rats with normal weight, whereas the GABAB agonist baclofen led to a decrease in body temperature. The effects of baclofen and CGP35348 on body temperature were less pronounced in rats with diet-induced obesity compared with those with normal weight. Presently it remains unclear how obesity affects the GABAB receptor function at the level of the central thermoregulatory system.