bluuebunny/crossref_metadata_2025_split huggingface dataset:
Métodos qualitativos de pesquisa aplicados aos estudos da agricultura familiar
Authors: Fossá Juliano Luiz , Piovezana Leonel 
Published: March 2019

<p>Este artigo apresenta uma análise dos métodos qualitativos de pesquisa utilizados em teses publicadas pelo Programa de Pós-Graduação em Desenvolvimento Rural da Universidade Federal do Rio Grande do Sul (PGDR/UFRGS) em temáticas referentes aos estudos da agricultura familiar. Ressaltamos as características dos métodos qualitativos, bem como sua importância nas investigações científicas e compreensões da realidade social. Selecionamos 12 teses que abordam a temática da agricultura familiar e se utilizam de métodos qualitativos de pesquisa no quadriênio compreendido entre 2013-2016. As análises apontaram que na totalidade dos trabalhos a principal estratégia do método materializou-se pela realização de entrevistas, compreendida como técnica para coleta de dados. Quanto à forma, em 100% (cem por cento) das teses, as entrevistas foram semiestruturadas e possibilitaram oportunidades e interações de conhecimentos nos momentos de suas realizações. Ressaltamos que houve utilização de outras técnicas para a coleta de dados, que ajudaram na assimilação e compreensão das informações de campo, como por exemplo: informantes-chave e anotações em diários de campo. As técnicas para análise dos dados coletados foram a partir de conteúdo por meio de categorias de análise. Consideramos que a utilização dos métodos qualitativos são aspectos positivos, pois ressaltam a importância social, a diversidade e complexidade que integram esta categoria. Concluímos que a diversidade encontrada nas teses analisadas permitem inúmeras possibilidades de investigações sociais sobre a agricultura familiar por meio do método qualitativo. Nessa perspectiva de olhares, percebemos que o método qualitativo, assume também, uma perspectiva multifacetária ao se apresentar como caminho metodológico adequado de investigações sociais.</p>
Educação ambiental e paradigma da complexidade: aproximações entre ciências naturais e ciências humanas
Authors: Massaê Kataoka Adriana , Manuela Morais Maria 
Published: March 2019

<p>Nos últimos anos a educação ambiental (EA) tem se firmado como um campo do conhecimento e de pesquisa que agrega contribuições de diferentes epistemologias. O conceito de EA surge por volta da década de setenta, inserido num contexto de lutas sociais ou direitos fundamentais. Posteriormente assume um caráter ambiental, marcado por uma visão naturalista, adotando concepções da biologia, numa atitude ecocêntrica, preocupada com a conservação dos ecossistemas e da biodiversidade, afastando-se do contexto social. Após 2004 começam a surgir as primeiras críticas a esta abordagem conceitual, e a EA passa a ser reconhecida como “Educação”, integrando a dimensão humana, em seus aspectos sociais, políticos e econômicos. Consideramos que nesta caminhada a EA ampliou a capacidade de compreensão das múltiplas interações entre sociedade e ambiente, se posicionando de forma privilegiada para enfrentamento da crise socioambiental, na busca da transformação da relação sociedade e natureza. Todavia, como um pêndulo, a EA saiu de um extremo, ou seja, das abordagens que privilegiam o olhar das ciências naturais para o das ciências humanas, frequentemente carentes de informações específicas que permitam a compreensão dos fenômenos naturais. Considerando todo este percurso, propomos fazer uma reflexão inspirada em Morin que defende a humanização das ciências naturais e a naturalização das ciências sociais. Essa perspectiva epistemológica pode contribuir para a inserção transversal da EA no âmbito do ensino formal, quiçá do ensino superior, contribuindo na construção do conhecimento transdisciplinar envolvendo o indivíduo, a sociedade e a natureza, como um só elemento de reflexão.</p>
A ofensiva neoliberal e o pensamento reacionário-conservador na política educacional brasileira
Authors: Lagoa Maria Izabel 
Published: March 2019

Nesse trabalho são levantadas questões sobre as implicações da ofensiva neoliberal e do pensamento conservador no campo das políticas educacionais e seus desdobramentos para a educação escolar no Brasil. Para tanto, partimos de uma revisão bibliográfica que examina o papel que a educação escolar assume historicamente no capitalismo, buscando elucidar a relação entre as políticas educacionais pós anos 90 com as contradições, tensões e disputas próprias da sociedade de classes capitalista. É analisado como norteador desse processo o conteúdo proposto na Base Nacional Comum Curricular, como documento normativo principal da organização do ensino escolar no Brasil, e sua articulação com o ideário neoliberal e a emergência do movimento Escola sem Partido.
Implemetasi Model Autoregressive (AR) Dan Autoregressive Conditional Heteroskedasticity (ARCH) Untuk Memprediksi Harga Emas
Authors: Dwi Murniati Ni Luh Ketut , Indwiarti Indwiarti , Rohmawati Aniq Atiqi 
Published: March 2019

Gold is a one of high selling value items in the market, and it can be used as an investment item. The price of gold in the market tends to be stable and not undergoing too significant changes which makes gold be a very valuable item. The aim of this research is to predict gold price using AR (1) and ARCH (1) model which are the part of time series methods. The data of gold price is obtained from ANTAM's daily historical website from 2007 - 2017. Here, the basic information about data is given by using descriptive statistic and the estimation of parameters in each model is condacted by using <em>Maximum Likelihood Estimation</em> (MLE). To evaluate the model, <em>Mean Absolute Error</em> (MAE) and <em>Root Mean Square Error</em> (RMSE) are used. In this research, the estimated model of AR (1) and ARCH (1) given as X_t = -0.012X_{t-1}+epsion_t and X_t = epsilon_t sqrt{0.000053+0.011958X^2_{t-1}} respectively. Moreover, the result of MAE and RMSE using AR (1) model are 0.0261 and 0.0342 respectively, meanwhile for ARCH (1) model are 0.0170 and 0.0251 respectively.
Prediksi Curah Hujan Menggunakan Gerak Brown dan Rataan Tahunan Data Pada Missing Values
Authors: Aulia Nur Nining , Gunawan Putu Harry , Rohmawati Aniq Atiqi 
Published: March 2019

<p>Air hujan yang turun dapat menimbulkan dampak negatif dan positif ke berbagai makhluk hidup yang ada di bumi. Salah satu dampak negatif yang ditimbulkan adalah banjir, sedangkan dampak positif yang ditimbulkan pada bidang teknologi adalah sebagai sumber listrik tenaga air. Sehingga untuk memaksimalkan dampak positif dan meminimalisir dampak negatif dari<br />curah hujan maka dilakukan prediksi. Pada jurnal ini dilakukan prediksi curah hujan dengan menggunakan metode Monte Carlo dengan Gerak Brown. Sebelum memprediksi curah hujan terlebih dahulu menghitung rata-rata dan volatilitas pada data yang telah di normalisasi. Prediksi dilakukan sebanyak 10,50, 100, 150 dan 200 kali iterasi. Pada iterasi-200 didapatkan nilai RMSE sebesar 20.6875, 13.9811, 20.6112 dan 20.293 untuk masing-masing empat stasiun secara berurutan.</p>
Klasifikasi Nada Sesuai Kodàly Handsign Dengan Metode K-Nearest Neighbor Pada Leap Motion Controller
Authors: Croassacipto Muhammad , Ichwan Muhammad , Utami Dina Budhi 
Published: March 2019

<span lang="IN">Tangan dapat menghasilkan berbagai pose di mana setiap pose dapat memiliki makna atau tujuan yang dapat digunakan sebagai bentuk komunikasi ditentukan sesuai kesepakatan umum atau siapa yang berkomunikasi. Pose tangan dapat digunakan sebagai interaksi manusia dengan komputer yang lebih cepat, intuitif dan sesuai dengan fungsi alami dari tubuh manusia yang disebut <em>Handsign</em>. Salah satunya adalah <em>Kodály Handsign</em> yang dibuat oleh seorang komposer Hungaria bernama Zoltán Kodály yang merupakan konsep dalam pendidikan musik di Hungaria. Pendekatan langsung ini digunakan dalam pertunjukan angklung interaktif dalam menentukan nada yang akan dimainkan dengan algoritma <em>K-Nearest Neighbor</em> (KNN) untuk proses klasifikasi berdasarkan pose tangan. Proses klasifikasi ini dilakukan pada data yang diekstrak dari <em>Leap Motion Controller</em> yang mengambil nilai <em>Pitch</em>, <em>Roll</em> dan <em>Yaw</em> berdasarkan prinsip dasar pesawat. Hasil penelitian dilakukan sebanyak 5 kali dengan nilai k secara periodik 1,3,5,7,9 dengan data uji beruapa pose yang terdiri dari 1004 Do, 891 Re, 526 Mi, 661 Fa, 612 Sol, 913 La, 702 Si dan 874 Do' terhadap 21099 data latih. Hasil tes dapat mengenali pose tangan dengan nilai k optimal <span> </span>k=1 dengan tingkat akurasi 94,87%.</span>
Perbandingan Performansi Algoritma Proportional Integral Controller Enhanced (PIE) dan DropTail Pada Layanan VoIP
Authors: Karimah Siti Amatullah 
Published: March 2019

<p><em>Voice over Internet Protocol </em>(VoIP) adalah teknologi yang menggunakan internet untuk melakukan komunikasi jarak jauh. VoIP berkembang seiring dengan berkembangan teknologi <em>smartphone </em> yang pesat. Hal ini menyebabkan komunikasi menggunakan telepon konvensional sudah mulai ditinggalkan. Perkembangan teknologi VoIP<em> </em>yang pesat dengan penggunanya yang sudah sangat banyak mengakibatkan kemungkinan terajadinya <em>bufferbloat</em> pada jaringan. Permasalahan ini dapat diatasi dengan mekanisme pengatur antrian atau biasa disebut <em>Active Queue Management </em>(AQM). Ada berbagai macam AQM yang sudah dikembangkan seperti <em>Proportional Integral controller Enhanced </em>(PIE), <em>Controlling Delay </em>(Codel), <em>DropTail </em>dan sebagainya. Pada penelitian ini diimplementasikan dan dianalisis kualitas layanan VoIP dengan menerapkan <em>Proportional Integral controller Enhanced </em>(PIE) dan <em>DropTail. </em>Pengukuran kualitas dinilai dengan menggunakan metode perhitungan <em>Mean Opinion Score </em>(MOS). Penilaian terbagi menjadi dua yaitu secara subjektif dan objektif. Secara subjektif, nilai MOS didapatkan dengan mendengarkan langsung kualitas suara. Secara Objektif, nilai MOS didapatkan dengan perhitungan <em>R-Factor. </em>Hasil pengujian perbandingan nilai <em>Mean Opinion Score </em>(MOS) baik secara subjektif maupun objektif menunjukan bahwa kualitas VoIP dengan algoritma <em>Proportional Integral Controller Enhanced </em>(PIE) lebih baik daripada DropTail. Pada parameter <em>throughput, packet loss, maupun delay </em>PIE lebih juga lebih baik daripada Droptail. Ini mengindikasikan implementasi algoritma PIE terhadap layanan VoIP lebih baik daripada Droptail<em></em></p>
Data-Driven Modeling of Carbon Dioxide Corrosion for Integrity Management Application
Authors: Mnasri Hamdi , Wassar Taoufik , Franchek Matthew A. , Marotta Egidio (Ed) 
Published: March 2019

Summary
In this work we expand on the carbon dioxide (CO2) corrosion–rate model presented by DeWaard et al. (1995) using a parameter–varying (PV) approach to improve prediction accuracy. Specifically, the constant coefficients of the reaction–kinetics–dependent term are replaced with varying parameters presented as a function of mean flow velocity and pH. On the basis of experimental data provided by Nešić et al. (1996) and Dugstad et al. (1994), we compare the corrosion–rate predictions between the original model and the proposed model. A significant improvement of the correlation coefficient (R2) from 0.54 to 0.90 is achieved when the PV coefficients replace the constant coefficients. Accurate predictions of the CO2 corrosion rate affect useful life forecasting of oil and gas systems during front-end engineering design studies, facilitate condition-based maintenance, and serve as the basis for the creation of a digital twin for this process.
Efficacy of electro-acupuncture and manual acupuncture versus sham acupuncture for knee osteoarthritis: statistical analysis plan for a randomized controlled trial
Authors: Tu Jian-Feng , Yang Jing-Wen , Wang Li-Qiong , Wang Yang , Li Jin-ling , Zhang Na , Lin Lu-Lu , Yu Zhang-Sheng , Liu Cun-Zhi 
Published: March 2019

Abstract
Background: Acupuncture therapies are widely used for knee osteoarthritis (KOA), despite contradictory evidences. Current study is designed to determine the efficacy of electro-acupuncture and manual acupuncture versus sham acupuncture for KOA. Methods/design: Current study is a multi-center, three-arm, randomized controlled trial which will enroll 480 participants with KOA in China. Participants will be randomly assigned (1:1:1) to receive 24 sessions of electro-acupuncture, manual acupuncture, or sham acupuncture over 8 weeks. The primary outcome is the response rate - the proportion of patients who simultaneously achieve minimal clinically important improvement in pain and function domains at 8 weeks. The primary outcome will be analyzed using Z-test with intention-to-treat set. Secondary outcomes contain pain, function, global patient assessment and quality of life. Full details of the statistical analysis plan for the primary and secondary outcomes will be described in this article. The statistical analysis plan was written and submitted without knowledge of the study data. Discussion: The data will be analyzed according to this pre-specified statistical analysis plan to avoid data-driven analysis and enhance the transparency of current trial. The trial will provide high-quality evidence on the efficacy of acupuncture for KOA. Trial registration: Clinicaltrials.gov, NCT03366363. Registered on 20 November 2017. (https://clinicaltrials.gov/show/NCT03366363)
PROtective Ventilation with a low versus high Inspiratory Oxygen fraction(PROVIO) and its effects on postoperative pulmonary complications:protocol for a randomized controlled trial
Authors: Li Xue-Fei , Jiang Dan , Jiang Yu-Lian , Yu Hong , Jiang Jia-Li , He Lei-Lei , Yang Xiao-Yun , Yu Hai 
Published: March 2019

Abstract
Background

Postoperative pulmonary complications (PPCs) have been the most common perioperative complication following surgical site infection, which prolongs the hospital stay and increases health care cost. Lung-protective ventilation strategy is considered better practice in abdominal surgery to prevent PPCs. The role of inspiratory oxygen fraction (FiO2) in the strategy is currently not clear and remains disputable, despite liberal oxygen administration and hyperoxia is demonstrated to be associated with respiratory mechanism changes and increased mortality in ventilated patients. The trial aims at exploring the effect of FiO2 in lung-protective ventilation strategy on PPCs.

Methods

PROtective Ventilation with a low versus high Inspiratory Oxygen fraction trial(PROVIO)is a single-center, prospective, randomized, controlled trial planning to recruit 252 patients under abdominal surgery lasting for at least 2 hours. The patients are randomly assigned to (1) a low FiO2 (30% FiO2) group and (2) a high FiO2 (80% FiO2) in lung-protective ventilation strategy. The primary outcome of the study is the occurrence of PPCs within the first 7 days postoperatively. Secondary outcomes include the severity grade of PPCs, the occurrence of postoperative extrapulmonary complications and all-cause mortality within the first 7 and 30 days postoperatively.

Discussion

PROVIO trial specially assesses the effect of low versus high FiO2 in lung-protective ventilation strategy on PPCs and the results will provide practical approaches to intraoperative oxygen management.

Trial registration number

Registered at www.ChiCTR.org.cn on 13 February 2018 with identifier no. ChiCTR18 00014901.
The impact of combining dental interventions with dietary and exercise advice on waist circumference in patients with the metabolic syndrome: Protocol for a randomized controlled trial
Authors: Suzuki Hiroyuki , Komagamine Yuriko , Kanazawa Manabu , Iwaki Maiko , Doke Midori , Mizuno Tetsuya , Sema Manabu , Okayasu Kaori , Miyazaki Yasunari , Minakuchi Shunsuke 
Published: March 2019

Abstract
Background

Metabolic Syndrome (MetS) associated with cardiovascular diseases have been focused on by researchers. Although various studies have investigated its relationship with the oral environment, the effects of dental interventions for MetS remain unclear. The aim of this trial is to investigate whether prosthetic or periodontal treatment combined with dietary and exercise advice can improve waist circumference, a surrogate measure of the syndrome. The null hypothesis is that there will be no difference in waist circumference between participants who receive prosthetic or periodontal treatment combined with dietary and exercise advice and those who receive only dietary and exercise advice.

Methods

This is a single-center, single-blinded, parallel, randomized controlled trial. Participants are randomly allocated to an intervention group (dietary and exercise advice plus prosthetic or periodontal treatment) or a control group (dietary and exercise advice only). Outcome measures include waist circumference; blood pressure; serum triglyceride, serum HDL/LDL cholesterol, fasting blood glucose, and HbA1c assessment using blood tests; Anthropometric measurements using bioelectrical impedance; health-related quality of life assessment using MOS 36-Item Short-Form Health Survey; oral-health-related quality of life assessment using Oral Health Impact Profile-14 and Geriatric Oral Health Assessment Index; food and nutrient intake assessment using brief-type self-administered diet history questionnaire; periodontal assessment using probing pocket depth and bleeding on probing. Objective masticatory function assessment using a color-changeable chewing gum and a gummy jelly was conducted for the participants who received prosthetic treatment. Outcome measures are to be implemented at three time points: at baseline and at 1 and 3 months after intervention. Differences between two groups in each assessment is compared using the Student’s t-test. Within group, the change between each assessment time is compared using the Tukey’s test.

Discussion

This trial could help to establish a new preventive method for the MetS that can be delivered by dental practitioners. Moreover, the findings are expected to reinforce the contribution of dentistry to extending healthy life expectancy.
ImPROving TB outcomes by modifying LIFE-style behaviours through a brief motivational intervention followed by short text messages (ProLife): study protocol for a randomised controlled trial
Authors: Moriarty Andrew Stephen , Louwagie Goedele Maria , Md Noreen Dadirai , Marojele Neo , Tumbo John , Omole Olufemi Babatunde , Bachmann Max Oscar , Kanaan Mona , Turner Astrid , Parrott Steve , Siddiqi Kamran , Ayo-Yusuf Olalekan Abdulwahab 
Published: March 2019

Abstract
Background

South Africa is among the 7 highest tuberculosis (TB) burden countries. Harmful lifestyle behaviours, such as smoking and alcohol, and poor medication adherence can affect clinical outcomes. Modification of these behaviours is likely to improve TB treatment outcomes and has proven possible using motivational interviewing (MI) techniques or use of short message service (SMS) text messaging. There have been no studies assessing the effect of combined MI and SMS interventions on multiple lifestyle factors and TB treatment outcomes.

Methods

This is a prospective, multi-centre, two-arm individual randomised controlled trial looking at the effectiveness and cost-effectiveness of a complex behavioural intervention (the ProLife programme) on improving TB and lifestyle-related outcomes in 3 provinces of South Africa. The ProLife programme consists of an MI counselling strategy, delivered by lay health workers, augmented with subsequent SMS. We aim to recruit 696 adult participants (aged 18 years and over) with drug-sensitive pulmonary TB who are current smokers and/or report harmful or hazardous alcohol use. Patients will be consecutively enrolled at 27 clinics in 3 different health districts in South Africa. Participants randomised individually to the intervention arm will receive 3 MI counselling sessions 1 month apart. Each MI session will be followed by twice-weekly SMS messages targeting treatment adherence, alcohol use and tobacco smoking, as appropriate. We will assess the effect on TB treatment success, using standard World Health Organization (WHO) treatment outcome definitions (primary outcome), as well as on a range of secondary outcomes including smoking cessation, reduction in alcohol use and TB medication and anti-retroviral therapy adherence. Secondary outcomes will be measured at 3 and 6 months follow-up.

Discussion

This trial aligns with the WHO agenda of integrating TB care with the care for chronic diseases of life-style, such as provision of smoking cessation treatments, and with the use of digital technologies. If the ProLife programme is found to be effective and cost-effective, the programme could have significant implications for TB treatment globally and could be successfully implemented in a wide range of TB treatment settings.
A case report: autosomal recessive limb girdle muscular dystrophy caused by a novel mutation (c. 287A &gt; G) in POMT2 gene of a Chinese Han patient
Authors: Gao Yanlu , Kang Zhixia , Wei Xiaojing , Miao Jing , Yu Xuefan 
Published: March 2019

Abstract
BACKGROUND

Autosomal recessive limb girdle muscular dystrophy 2N is caused by mutations in the POMT2 gene. The disease is characterized by proximal muscle weakness,with minimal progression, with cognitive impairment,a significantly elevated serum level of creatine kinase.

CASE PRESENTATION

A 9-year-old boy presented with proximal muscle weakness since the last 4 years,with minimal progression.There was no significant family history.Medical examination showed no generalized muscle hypertrophy. Serum creatine kinase level was 52-fold higher than the normal value. Wechsler Intelligence scale for Children (WISC, 4) suggested mild cognitive impairment (IQ =74). DNA sequence analysis identified a novel missense mutation (c. 287A > G) and a known mutation (c. 1261C > T).

CONCLUSIONS

This case report of autosomal recessive limb girdle muscular dystrophy 2N caused by a novel compound heterozygous mutation expands the genotypic spectrum of POMT2 gene.
Effect of Green Coffee Beans Extract Ointments for Wound Healing
Authors: Humaryanto Humaryanto , Rahman Ave Olivia 
Published: March 2019

Some interventions, such as coffee powder, are applied on wound to facilitate healing process. Coffee has several properties that can facilitate wound healing. Application of Robusta coffee bean ointment 22.5 % on full thickness wound could increaseÂ fibroblast. Povidone iodine 10% has remained popular as wound antiseptic. This study aimed to evaluate the effect of green coffee bean extract in lower concentration for healing wound in rats. This study used male Sprague Dawley rats, 10 rats in each group. The skin incision was held in right back of rats with a diameter of 1.5 cm under lidocaine anesthetic subcutaneously. Group I was not given intervention, group II was given liquid povidone iodine 10%, and group III was given 15% green coffee bean extract in vaseline base. Interventions were held every day without wound debridement. Wound size was measured at day 0, 7 and 16.Â Animals were sacrificed at day 7 (proliferative phase) and 16 (remodeling phase). Sections were stained using Haematoxilyn-eosin. Histopathology assessment of wound tissue is on reepithelization and presence of: inflammatory cells, fibroblast, collagen, and vascularization. Green coffee extract couldÂ increase wound contractionÂ andÂ accelerated wound healing. Histopathology result on day 7 showed that green coffee extract had high response inflammatory cells and fibroblast. The provision of 15% green coffee bean extract ointment can accelerate wound healingÂ with higher inflammation response and fibroblast in proliferative phase .