bluuebunny/crossref_metadata_2025 huggingface dataset:
Jean de Lattre de Tassigny's strategy in Tonkin (Vietnam) during the First Indochina War (1950-1952)
Authors:   Can Tho University, School of Education, Department of History, Cantho, Vietnam, Thuan Pham Duc
Published: September 2021

Since 1950, the war in Indochina entered a fierce phase, especially in Tonkin (Vietnam). Viet Minh forces, supported by China and the Soviet Union, cornered the French expeditionary army and lost many important bases on the battlefield. That is why the US has increased its support for the French army in the war and at the same time trusted a very talented General of the French army, General Jean de Lattre de Tassigny. Jean de Lattre de Tassigny went to Indochina to implement a strategy to reverse the situation of the French army with a series of effective military policies. The strategies of General Jean de Lattre de Tassigny caused many difficulties for the Viet Minh and the Indochina battlefield also had great changes. However, as his strategies were being implemented, he died in 1952 and the French army lost a man capable of turning the tide. The rise of the Viet Minh and the strength of the Vietnamese patriotism completely defeated the French army in 1954. This article refers to General Jean de Lattre de Tassigny's strategy in Tonkin (Vietnam) battlefield, thereby clarifying his military policies in the first Indochina war.
Interfaz 3d con Kinect para terapias de manguito rotador en personas con movilidad reducida
Authors:   Fundación Universitaria Compensar U Compensar, Molero Suárez Luis Guillermo , Rosas Jiménez Nelson Felipe ,   Fundación Universitaria Compensar U Compensar, Sáenz Leguizamón Javier Alejandro ,   Fundación Universitaria Compensar U Compensar, Gómez García Lennis Duvan ,   Fundación Universitaria Compensar U Compensar
Published: September 2021

El presente capítulo tuvo como propósito el desarrollo de una interfaz 3D con Kinect para terapias de manguito rotador en personas con movilidad reducida. De acuerdo con el estudio, la investigación fue de tipo aplicada, transversal y su diseño no experimental. Para el logro de lo antes expuesto, se analizaron los siguientes puntos: 1) Gamificación y Microsoft Kinect, 2) Rehabilitación y fisioterapia y 3) Entrenador Virtual Reactivo (RVT). El procedimiento manejado fue el de establecer a través del desarrollo de una interfaz 3D con Kinect, los beneficios de esta herramienta tecnológica en pro de la inclusión social, laboral y optimización en la calidad de vida de pacientes con discapacidad en manguito rotador. Los resultados obtenidos cometen con el objetivo propuesto permitiendo desarrollar una aplicación con el uso del dispositivo periférico Microsoft Kinect en pacientes con discapacidad motriz de manguito rotador. Como conclusión, se espera que el desarrollo de este tipo de alternativas tecnológicas mejore la condición de vida en personas con movilidad reducida, en pro de generar un impacto positivo e inclusivo en este tipo de población vulnerable.
Usabilidad de interfaz 3D con Kinect para terapias de manguito rotador en personas con movilidad reducida
Authors:   Fundación Universitaria Compensar U Compensar, Molero Suárez Luis Guillermo , Merchan Jiménez Jefferson Andrés ,   Fundación Universitaria Compensar U Compensar
Published: September 2021

El presente capítulo tuvo como propósito evaluar la usabilidad de una interfaz 3D con Kinect para terapias de manguito rotador en personas con movilidad reducida. La metodología estuvo orientada bajo el paradigma cualitativo, a través de un estudio de caso de tipo transversal descriptiva con diseño de campo no experimental. Las categorías analizadas fueron: 1) Usabilidad de software de cara a cubrir las necesidades del cliente y 2) Discapacidad motriz como consecuencia de lesión en manguito rotador. La revisión científica referente a la usabilidad de la interfaz 3D permitió definir como instrumento de recolección de datos la prueba Escala de Usabilidad del Sistema (SUS) de Brooke (1996) que consiste en medir, a través de un valor numérico único de entre 1 y 100, la usabilidad de la interfaz 3D en una muestra de cinco expertos en contenido y en rehabilitación, mostrando una puntuación de noventa y siete (97). Como conclusión se obtuvo, la eficaz funcionalidad de la interfaz 3D con Kinect como herramienta para el despliegue del entrenamiento en terapias de manguito rotador en personas con dicha discapacidad, esto desde un diagnóstico temprano de la afección, lo que permite generar espacios de inclusión que mejoren la calidad de vida del paciente con discapacidad motriz.
Cystic hygroma and esophageal atresia with tracheoesophageal fistula: Is there a genetic association?
Authors: Vutukuru Sravanthi , Peters Nitin James , Dogra Shivani , Samujh Ram
Published: September 2021

Background: Tracheoesophageal fistula (TEF) is associated with many other congenital anomalies like cardiac, renal, and vertebral, but the association with cystic hygroma is very rare.
Case Presentation: We report a neonate, antenatally diagnosed with cystic hygroma of the neck and incidentally diagnosed to have TEF. The baby was operated on after adequate stabilization and the cystic hygroma was managed with injection sclerotherapy. The genetic analysis for the FOX genes complex has been done in this case and the results showed no association between the two.
Conclusion: There is a need for future studies to find out if the association between cystic hygroma and TEF is by chance or if any embryological or genetic cause can be attributed to it.
Trans-Esterification Optimization Process for Biodiesel Production from Palm Kernel Oil using Response Surface Methodology
Authors: Rabiu T.O. , Folami N.A. , Badiru N.A. , Kinghsley N.A. , Dare B.T. , Adigun I.A.
Published: September 2021

The ever-growing concern for the safety of lives and the environment as well as the depletion in fossil fuels reserves across the globe has led to the keen interests of many researchers in the field of renewable energy. This study was therefore undertaken to investigate the trans-esterification optimization process for biodiesel production from palm kernel using response surface methodology. The materials for the trans-esterification processes were palm kernel oil, Methanol and sodium hydroxide. The effects of reaction temperature (oC), catalyst concentration (wt%) and reaction time (min) on the yield were evaluated. The properties of the biodiesel produced showed that it met the ASTM standard for biodiesel. A quadratic polynomial model, Yield (%) = 78.60–3.12A–.62B + 0.00C -0.75AB – 3.50AC + 1.50BC + 2.82A2– 0.18B2 + 1.08C2, was developed that can be used to predict yield of biodiesel at any value of the different parameters investigated. The ANOVA for the model of the biodiesel yield obtained indicates that the models fit well in describing the relationship between the predictor (biodiesel yield) and the factors (methanol to oil ratio, catalyst concentration and reaction time). The optimal trans-esterification conditions were found to be 60°C for temperature, 60minutes for reaction time, 0.878w% of oil as Sodium hydroxide (catalyst) concentration and methanol/oil ratio of 1:6. At these optimal conditions, the biodiesel yield was fond to be 89.32% The generated biodiesel had high cetane number, better engine ignitability and poses lesser pollution problems than petroleum diesel.
A Survey on the Manufacturing Contribution of Installed Industrial Robots at Nigerian Breweries Factory in Kaduna Metropolis, Nigeria
Authors: Guma T.N. , Akporhuarho J.O.
Published: September 2021

Industrial robots are used in more advanced automation to effectuate manufacturing with far greater speed, efficiency, safety, guaranteed consistency, and reliability than human processing. Countries that employ automation technologies are leaders in industrial manufacturing and contributions to economy. Developing countries like the ones in Africa are seen to hardly use automation technologies in industrial processing. Nigeria is the largest economy in Africa but her industrial base and development is very low. Many industries in Nigeria and other less developed economies face challenges in transitioning to application of automation technologies due mainly to either lack of awareness, costs, and shortage of manning personnel. Industries noted or suspected to be employing robotic technology in Nigeria were visited or contacted to know the realities. Findings indicated that only few Nigerian industries especially breweries employ robots in manufacturing in the country. Detailed survey of Nigerian Breweries factory in Kaduna metropolis as a notable manufacturing outfit employing industrial robots in Nigeria was conducted. The survey indicated that three robots named the packer, unpacker, and palletizer are employed at the company for removing, arranging, and placing about 25,000 empty glass bottles per hour either from or into crates on beer production lines before and after the bottles are washed or treated. These activities which can also be done manually were estimated to require more than 100 dedicated workers to accomplish every workday at the company. It was also evidential that the robots had greatly being contributing to productivity, quality, safety, and timely delivery of the factory products to customers with greater sale and profitability profile of the Breweries Company. The survey is intended to practically substantiate the technological option of employing robots to boost industrial manufacturing profiles and returns and contributions to economy in less developed countries.
Production and Characterization of an Eco-Friendly Oil Based Mud from Synthetic Bio-lubricant Derived from Chrysophyllum Albidum Seed Oil
Authors: Igbafe S , Azuokwu A.A. , Igbafe A.I.
Published: September 2021

Sequel to the environmental problems of the none biodegradable nature of the conventional oil-based drilling fluids, it is imperative and urgent for environmental sustainability and for the development of eco-friendly products, that use of petroleum diesel oil as the continuous phase of drilling mud warrant urgent reconsideration. Towards the search to provide a better alternative to petroleum diesel oil as a base oil for drilling mud, vegetable oil from the inedible seeds of the African star apple fruits, was examined In this study, an oil-based drilling mud (OBM) with biodegradable qualities for sustainable environmental applications was developed and characterized. The OBM was produced with chrysophyllum albidum (African star apple) oil methyl ester bio-lubricant to replace petroleum diesel as the continuous phase of the mud. The chrysophyllum albidum oil methyl ester was synthesized from fatty acid methyl ester obtained through transesterification process of none edible oils extracted from chrysophyllum albidum seeds. Tests of physiochemical and rheological properties were carried out on mud samples of chrysophyllum albidum oil biolube-based mud (CAOBBM) and petroleum diesel oil-based mud (PDOBM) to characterise the fluids for performance evaluation and environmental consequences. The findings indicated that CAOBBM was lower in density and less acidic than PDOBM, at barite content of 20 g. Also, CAOBBM had lower viscosity which implies less resistance to flow and lower pressure losses. The low oil to water ratio from the filtration loss test, revealed that CAOBBM is more viable to low fluid loss and consequently enhances wellbore stability and less oil retained on drilled cuttings. Similarly, toxicity test confirmed CAOBBM to be more appropriate and less detrimental to the environment compared to PDOBM. Summarily chrysophyllum albidum oil biolube based muds stands safer and more eco-friendly for a sustainable environment than petroleum diesel oil-based muds.
TYPE OF NEWS ON POLITICAL CORRUPTION IN SOUTH SUDAN
Authors: Mberia Hellen , Elseddige Huda , Ndavula John
Published: September 2021

Purpose:  The study sought  to determine the type of news on political corruption by newspapers in South Sudan

Method   The study used descriptive research design to address the research objectives. The target population in this study was Sudan Tribune, Juba Monitor, The Dawn, Peace Day, Sudanese Online newspapers, international and local NGOs, journalists who work for the media station and lecturers and students from Juba University. The researcher identified every single element and the sampling frame was the five newspapers, also local and international NGOs, students and lecturers from Juba University

Findings of the study Media houses shied away from giving priority to political corruption news for the fear of their lives, intimidation and torture.  the coverage of political corruption news on a quarter of a page, hence confirming the fact that the public in South Sudan was denied the opportunity by the print media to question the government on corruption in the country

Contributions Informed by the findings, the study had the following  recommendation The various media regulatory policies and the constitutional rights should be implemented by the instruments of power including the police, the government and the judiciary. This would assure journalists and media houses of their freedom to access information and freedom of expression, while shielding them from intimidation, torture and killing. The legislature, in collaboration with the media regulatory bodies in South Sudan should enact laws that protected media houses and journalists, especially in the cases where they  cover sensitive but important information.
Mini Review of Parasitoids Collected from Dipterans (Flies) in the Brazilian Cerrado Biome
Authors: Marchiori Carlos Henrique
Published: September 2021

These dipterans use decaying organic matter for food and ovi/ larviposition, so the species of these families easily adapt to anthropic environments, which makes them insects considered to be synanthropic cosmopolitans of importance for public health. The collection was built from articles (describing the objective and results) from 1999 and 2010 with the theme: dipterous parasitoids elaborated from 2000 to 2021 in the cerrado biome of the states of Goiás and Minas Gerais. The most used parasitoids in biological control are in the Hymenoptera. Within Hymenoptera Parasitic and the most used families are Braconidae, Ichneumonidae, Trichogrammatidae, Eulophidae and the superfamily Chalcidoidea (Pteromalidae, Encyrtidae and Aphelinidae) and Coleoptera parasitoids of the Staphilinidae family.
MANIFESTAÇÕES CUTÂNEAS E CLÍNICAS EM PACIENTES DIAGNOSTICADOS COM COVID-19 NA AMAZÔNIA: SÉRIE DE CASOS
Authors: Melo de Souza Thalles Ricardo , Vale da Luz Polyana Nathércia , Gadelha Silva Lucas Motta , De Araújo Mariana Norberto , Da Fonseca Lorena Garcia , Batista Lima Karla Valéria , Da Silva Júnior Ademir Ferreira
Published: September 2021

Em 2019, uma nova pneumonia obscurecida foi relatada por cientistas chineses de Wuhan. Posteriormente, foi identificada a estrutura SARS-Cov-2, além disso, a patologia causada por esse vírus foi nomeada como COVID-19. O período de incubação desta doença é algo cerca de 4 ou 5 dias antes do início dos sintomas, com 97,5% dos pacientes tendo 11,5 dias de sintomas próximos. Além disso, os pacientes afetados estão tendo manifestações cutâneas, além do afeto pulmonar, laboratorial e sistêmico clássico. Assim, o objetivo do presente artigo foi a descrição das manifestações clínicas, cutâneas e laboratoriais em adultos de 18 a 59 anos afetados pelo COVID19 e apoiados pelo Hospital São Rafael, localizado em Altamira-Pará, região do Amazonas
EFFECTIVENESS OF AGRICULTURAL PROGRAMMES ON TELEVISION AS PERCEIVED BY TELEVIEWING FARMERS IN CHITTOOR DISTRICT OF ANDHRA PRADESH
Authors: SINDHUJA PALUKURI , JAHANARA JAHANARA , MAZHAR SYED H
Published: September 2021

The present study was undertaken with the main objective of assessing the effectiveness of agricultural programmes of different channels as perceived by the televiewing farmers. Before and After research design was followed in the present investigation. The study was conducted in Tirupathi mandal, Chittoor district which were selected purposively. The data were collected randomly by talking personally interview of 120 televiewers. The data was collected by personal interview method through structured interview schedule. Majority of the respondents were middle aged, had medium level of education, medium farming experience, medium land holding, medium level of extension contact, mass media exposure, economic orientation, achievement motivation and innovativeness. Majority of the respondents had perception of televiewing farmers of different channels with respect to components of effectiveness, namely understandability, usefulness, demonstration mode of presentation, entertainment and relevancy of pictures. “Time duration is not sufficient”, “Telecast time is not convenient”, “Telecast programmes are useful to the farming community” and “Telecast programme are drawing attention of the farmers to bring awareness on new technology” were the major reactions of the respondents. Telecast time need to be changed from 6:00am-7.00am and 7.00pm-9.00pm, all programmes should be telecasted should be telecasted daily, information on the schedule of the topics to be telecasted in the telecasted in the consecutive week should be advertised at the starting of the week, separate television channel is required to telecast agriculture related activities.
Remote Risk-Stratification of Dyspnoea in Acute Respiratory Disorders: A Systematic Review of the Literature
Authors: Ponnapalli Anuradha , Khare Yuti , Dominic Catherine , Ganesh Shivani , Bhalla Gaurav , Gokani Shyam Ajay
Published: September 2021

Background Telephone and video-based triage of dyspnoea has become commonplace and clinicians are faced with a new challenge in risk stratification of patients with dyspnoea due to suspected COVID-19. This review aimed to identify existing remote assessment modalities for acute dyspnoea which can be applied during pandemics.

Methods We conducted a systematic search of Medline, Embase, the Cochrane Library and medRxiv for studies of remote assessment of dyspnoea [PROSPERO ID: CRD42020202292]. A total of 3014 abstracts were screened independently by two reviewers and 32 studies were progressed to full text screening.

Results Five studies met the inclusion criteria. Commonly assessed clinical features included respiratory rate, work of breathing, counting time and mental status. All studies found remote triage modalities to be appropriate for detecting severe respiratory distress or the need for emergency level care.

Conclusions Evidence-based tools to remotely assess dyspnoea will reduce resource strain during current and future pandemics.
Safety of Long-Term Use of Four Common Conventional Disease Modifying Anti-Rheumatic Drugs in Rheumatoid Arthritis
Authors: Kedia Arun Kumar , Mohansundaram Kavitha , Goyal Mohit , Ravindran Vinod
Published: September 2021

Conventional disease-modifying antirheumatic drugs (DMARDs) have been used in the management of rheumatoid arthritis for a long time. Whereas methotrexate (MTX) is the anchor drug, leflunomide, hydroxychloroquine and sulfasalazine are used along with MTX either in combination or sequentially. Together these four drugs are the most commonly used DMARDs. They are also used in combination with biological DMARDs (bDMARDs) to enhance their efficacy and MTX in particular to reduce antibodies against anti-tumour necrosis factor. Despite their widespread use, concerns regarding their safety especially when used long-term hinder their optimum use in clinical medicine. In this narrative review we have critically appraised the available literature regarding the safety of these four DMARDs when used long-term.
A Case of Premature Ventricular Contractions-Related Cardiomyopathy
Authors: Chung Enoch , Young Sara , Chen Michael A
Published: September 2021

Premature ventricular contractions (PVCs) are heart beats initiated in the ventricles instead of in the sinoatrial node. A high burden of PVCs can lead to a cardiomyopathy, characterised by reduced left ventricular (LV) systolic dysfunction. We present a case of PVC-related cardiomyopathy where the 65-year-old male was initially seen by his primary care provider for recent onset chest pain and dizziness. His transthoracic echocardiogram showed mild concentric LV hypertrophy and mildly reduced systolic function (LV ejection fraction 43%). There was also mild right ventricular (RV) systolic dysfunction. He was started on a beta-blocker and an angiotensin-converting enzyme inhibitor. A 24-hour Holter monitor showed a very high burden of PVCs (32% of all beats). He continued to have frequent PVCs and his echocardiogram did not improve. He was eventually referred for a PVC ablation. Following the ablation, a repeat Holter monitor showed a marked reduction in PVC burden (<1% of beats) and his echocardiogram had normalised.
Severe Intracranial Atherosclerotic Disease Presenting as Symptomatic Isolated Convexity Subarachnoid Haemorrhage
Authors: Muhammad Ahmad , Patro Satya Narayana , Hussain Suhail , Illahi Memon Noor , Haroon Khawaja Hassan
Published: September 2021

Isolated convexity cortical subarachnoid haemorrhage (cSAH) is a rare form of non-traumatic subarachnoid haemorrhage localised to one or few cortical sulci of the brain without involving the adjacent brain parenchyma or spreading to sylvian fissure, interhemispheric fissure, basal cisterns and ventricles. cSAH has multiple aetiologies described in medical literature. Intracranial high-grade stenosis is rarely presented as cSAH, especially in young adult patients. Patients presenting with cSAH warrant appropriate diagnostic work up to identify and treat the underlying aetiology.
Genetic Biomarkers in Association with Depressive Disorder in UAE Residents: A Pilot Case Study
Authors: Mahmood Nailah , Nawaz Rukhsana , Abdul Kadir Hidaya , Al Mughairbi Fadwa
Published: September 2021

Objectives: We sought to explore the expression of genes associated with depressive disorder in patients with depression compared to control patients. A large body of research in the area of genetics has shown familial aggregation for depressive disorders. The purpose of this study was to identify genetic risk factors in developing depression, particularly among the population residing in the UAE. Methods: We investigated five associated genes (PPARGC1A,CAMKMT,HSD11B1,SLC6A4,and MAOA) previously linked to depression and anxiety in other populations. The study was carried out in Al Ain, although participants were from different nationalities. Blood samples were collected over a period of seven months, and lab work was carried out over a period of two months from September 1, 2018 to May 30, 2019. We screened the prevalence of the PPARGC1A,CAMKMT,HSD11B1,SLC6A4, and MAOA in 29 patients with depressive disorder and 30 controls using the quantitative real-time polymerase chain reaction method. Results: The expression of the PPARGC1A gene, studied for the first time in the UAE population. The independent t-test was used to check the significance of difference between the expression levels of target genes where the control was set at a reference level of 1.0. PPARGC1A gene is lower among the depressed group which showed mean difference: 0.4 and p-value: 0.02, indicating a strong association with depression. No significant difference was found in the genes’ expression of CAMKMT with p-value 0.150, MAOA p-value 0.070, SLC6A4 p-value 0.750, and HSD11B1 p-value 0.100 in two groups in comparison with (p < 0.050). Conclusions: These results open several possibilities for further research to study the role of this gene as a protective factor against developing depression.
A New Strategy for Long-Term Smart Corrosion Protection of Q235 Carbon Steel Using Polyaniline Nanofiber Covalently Linking with Modified GO as Reinforcement of Epoxy Coating
Authors: Qian Cheng , Xiao Fengjuan , Zhao Dong , Zhang Hualin , Wang Shimao , Tian Zhiren , Yang Han , Duan Yumei , Zhang Xuefei , Wang Meng , Yan Lu , Kong Shimao Longfei , Gao Hui , Zhang Guangtian , Fu Shifeng , Li Mengya , Li Jun
Published: September 2021

Polyaniline nanofiber (PANI-f) was covalently linked with cetyltrimethyl ammonium bromide (CTAB) modified graphene oxide nanosheets (CTGO) to fabricate a smart composite coating for corrosion protection of carbon steel. In the copolymerization process, CTAB served both as a modifier for the modification of GO and a dispersant for the preparation of polyaniline nanofibers. The prepared PANI-f can avoid the accelerated corrosion of steel by a conventional synthesis method using hydrochloric acid as medium. The covalent binding between PANI-f and CTGO improved the compatibility of PANI-f-GO with the waterborne epoxy emulsion, which significantly enhanced the hydrophobicity and antipermeability of the coating. The PANI-f-GO waterborne epoxy coating exhibited excellent smart corrosion protection efficiency by catalyzing the formation of passivation film on the steel surface. Molecular adsorption energy on Fe(110) and radial distribution function confirmed the chemical adsorption of the PANI-f-GO composite on the steel surface. The superior smart protective performance can be ascribed to the synergistic effects of PANI-f and CTGO.
Ativismo, decisão judicial e fundamentação irracional: uma proposta de controle
Authors: Santiago Nestor Eduardo Araruna , Viana Ruth Araújo
Published: September 2021

O objetivo do artigo é identificar se a fundamentação irracional é causa para a anulação de decisões judiciais. Reforçar o dever institucional do julgador de decidir racionalmente e, portanto, alicerçado nas provas do processo e no ordenamento jurídico, é um compromisso com o Estado Democrático de Direito que não pode ser esquecido. Nesse sentido, será estudado como o ativismo judicial compromete a função institucional do Poder Judiciário, atingindo diretamente a imparcialidade do julgador. Para a produção deste trabalho científico será utilizado o método hipotético-dedutivo e estudos de casos. E a partir disso, tem-se a compreensão sobre o ativismo judicial e o dever de imparcialidade procedimental do juízo para justificar a necessidade de controle de decisões judiciais cujos fundamentos fogem da prova produzida no processo ou vão de encontro aos dispositivos legais. O método para o controle da decisão judicial ativista será, portanto, identificar os fundamentos expostos nas decisões que estejam alheios às provas produzidas nos autos e sem qualquer respaldo legal.
Pengaruh Kompetensi, Independensi, Etika Auditor, Dan Integritas Terhadap Kualitas Audit (Studi Kasus pada BPKP Provinsi Jambi)
Authors: Paradina Novita Eka
Published: September 2021

Penelitian ini bertujuan untuk mengetahui pengaruh dari kompetensi, independensi, etika auditor, dan integritas terhadap kualitas audit yang dilakukan pada Kantor BPKP Provinsi Jambi. Penelitian ini menggunakan sampel jenuh dengan menggunakan 78 orang auditor sebagai sampel. Jenis data yang digunakan pada penelitian ini adalah data primer. Metode pengumpulan data yang digunakan adalah dengan menggunakan kuesioner. Teknik analisis data menggunakan regresi linier berganda yang digunakan dengan menggunakan program SPSS versi 23. Hasi penelitian ini menunjukkan bahwa kompetensi, independensi, etika auditor, dan integritas berpengaruh secara simultan terhadap kualitas audit, sedangkan secara parsial independensi dan integritas berpengaruh terhadap kualitas audit, dan kompetensi dan etika auditor tidak berpengaruh terhadap kualitas audit.
Asociatividad, cadena de valor e impacto de ambas
Authors: Parrales Poveda María Leonor , Basurto Vinces Carlos Emilio , Cruz Vidaurre Madelayne Ivana , Ponce Prado José Alberto
Published: September 2021

El avance científico en temas como la inteligencia artificial y la biotecnología, así como la pandemia por la Covid-19 presentan desafíos a la economía mundial, especialmente a los productores y empresarios que deben con resiliencia adaptarse al momento. En Ecuador, con un sistema económico social y solidario, los emprendedores, micro, pequeños y medianos empresarios deben unir sus esfuerzos para enfrentar estos retos. Una vía es la asociatividad. Sin embargo, existe resistencia al trabajo cooperativo, impera el individualismo y la intermediación como medio para llevar la producción al consumidor. Este, es uno de los nudos críticos en su cadena de valor, que no ha permitido al productor mejorar su estatus social.  Por ello, con la revisión de una considerable literatura y un trabajo de campo se explica que conformar asociaciones posibilita desarrollar proyectos más eficientes, minimiza riesgos, mejora la competitividad e incrementa la producción, consolida alianzas entre distintos agentes que interactúan en el mercado, promoviendo oportunidades de crecimiento individual y colectivo. La asociatividad articulada a la cadena de valor permite desarrollar ventajas competitivas y crear valor a su marca.
Interhemispheric differences of mesosphere–lower thermosphere winds and tides investigated from three whole-atmosphere models and meteor radar observations
Authors: Stober Gunter , Kuchar Ales , Pokhotelov Dimitry , Liu Huixin , Liu Han-Li , Schmidt Hauke , Jacobi Christoph , Baumgarten Kathrin , Brown Peter , Janches Diego , Murphy Damian , Kozlovsky Alexander , Lester Mark , Belova Evgenia , Kero Johan , Mitchell Nicholas
Published: September 2021

Abstract. Long-term and continuous observations of mesospheric–lower thermospheric winds
are rare, but they are important to investigate climatological changes at
these altitudes on timescales of several years, covering a solar cycle and
longer. Such long time series are a natural heritage of the mesosphere–lower
thermosphere climate, and they are valuable to compare climate models or long-term runs of general circulation models (GCMs). Here we present a
climatological comparison of wind observations from six meteor radars at two
conjugate latitudes to validate the corresponding mean winds and atmospheric
diurnal and semidiurnal tides from three GCMs, namely the Ground-to-Topside Model
of Atmosphere and Ionosphere for Aeronomy (GAIA), the Whole Atmosphere Community
Climate Model Extension (Specified Dynamics) (WACCM-X(SD)), and the Upper
Atmosphere ICOsahedral Non-hydrostatic (UA-ICON) model. Our results indicate
that there are interhemispheric differences in the seasonal characteristics of
the diurnal and semidiurnal tide. There are also some differences in the mean
wind climatologies of the models and the observations. Our results indicate
that GAIA shows reasonable agreement with the meteor radar observations
during the winter season, whereas WACCM-X(SD) shows better agreement with
the radars for the hemispheric zonal summer wind reversal, which is more
consistent with the meteor radar observations. The free-running UA-ICON tends
to show similar winds and tides compared to WACCM-X(SD).
CALL FOR NOMINATIONS FOR NEW CO-EDITOR: STATISTICS EDUCATION RESEARCH JOURNAL
Authors: DELMAS ROBERT , PETOCZ PETER
Published: September 2021

First published November 2011 at Statistics Education Research Journal: Archives
FORTHCOMING IASE CONFERENCES
Authors: DELMAS ROBERT , PETOCZ PETER
Published: September 2021

Forthcoming IASE Conferences
First published November 2011 at Statistics Education Research Journal: Archives
LETTER TO THE EDITOR
Authors: MILLAR ANNE MICHELE , SCHAU CANDACE
Published: September 2021

First published November 2011 at Statistics Education Research Journal: Archives
RETENTION OF STATISTICAL CONCEPTS IN A PRELIMINARY RANDOMIZATION-BASED INTRODUCTORY STATISTICS CURRICULUM
Authors: TINTLE NATHAN , TOPLIFF KYLIE , VANDERSTOEP JILL , HOLMES VICKI-LYNN , SWANSON TODD
Published: September 2021

Previous research suggests that a randomization-based introductory statistics course may improve student learning compared to the consensus curriculum. However, it is unclear whether these gains are retained by students post-course. We compared the conceptual understanding of a cohort of students who took a randomization-based curriculum (n = 76) to a cohort of students who used the consensus curriculum (n = 79). Overall, students taking the randomization-based curriculum showed higher conceptual retention in areas emphasized in the curriculum, with no significant decrease in conceptual retention in other areas. This study provides additional support for the use of randomization-methods in teaching introductory statistics courses.
First published May 2012 at Statistics Education Research Journal: Archives
FORTHCOMING IASE CONFERENCES
Authors: DELMAS ROBERT , PETOCZ PETER
Published: September 2021

Forthcoming IASE Conferences
First published May 2012 at Statistics Education Research Journal: Archives
Editorial
Authors: SCHAU CANDACE , MILLAR MICHELE , PETOCZ PETER
Published: September 2021

First published November 2012 at Statistics Education Research Journal: Archives
STUDENTS’ PERCEPTIONS OF STATISTICS: AN EXPLORATION OF ATTITUDES, CONCEPTUALIZATIONS, AND CONTENT KNOWLEDGE OF STATISTICS
Authors: BOND MARJORIE E. , PERKINS SUSAN N. , RAMIREZ CAROLINE
Published: September 2021

Although statistics education research has focused on students’ learning and conceptual understanding of statistics, researchers have only recently begun investigating students’ perceptions of statistics. The term perception describes the overlap between cognitive and non-cognitive factors. In this mixed-methods study, undergraduate students provided their perceptions of statistics and completed the Survey of Students’ Attitudes Toward Statistics-36 (SATS-36). The qualitative data suggest students had basic knowledge of what the word statistics meant, but with varying depths of understanding and conceptualization of statistics. Quantitative analysis also examined the relationship between students’ perceptions of statistics and attitudes toward statistics. We found no significant difference in mean pre- or post-SATS scores across conceptualization and content knowledge categories. The implications of these findings for education and research are discussed.
First published November 2012 at Statistics Education Research Journal: Archives
LOOKING BACK OVER THEIR SHOULDERS: A QUALITATIVE ANALYSIS OF PORTUGUESE TEACHERS’ ATTITUDES TOWARDS STATISTICS
Authors: MARTINS JOSÉ ALEXANDRE , NASCIMENTO MARIA MANUEL , ESTRADA ASSUMPTA
Published: September 2021

Teachers’ attitudes towards statistics can have a significant effect on their own statistical training, their teaching of statistics, and the future attitudes of their students. The influence of attitudes in teaching statistics in different contexts was previously studied in the work of Estrada et al. (2004, 2010a, 2010b) and Martins et al. (2011). This work is part of a broader study of Portuguese education teachers and statistics. In the current paper, we use a qualitative content analysis of survey responses from Portuguese first-stage in-service teachers, focusing on nine open-ended items extracted from the Escala de Actitudes hacia la Estadística de Estrada (Estrada, 2002). These responses allow us to investigate teachers’ attitudes towards statistics, and their reasons and motivations for holding these attitudes.
First published November 2012 at Statistics Education Research Journal: Archives
STUDENTS’ ATTITUDES TOWARD STATISTICS ACROSS THE DISCIPLINES: A MIXED-METHODS APPROACH
Authors: GRIFFITH JAMES D. , ADAMS LEA T. , GU LUCY L. , HART CHRISTIAN L. , NICHOLS-WHITEHEAD PENNEY
Published: September 2021

Students’ attitudes toward statistics were investigated using a mixed-methods approach including a discovery-oriented qualitative methodology among 684 undergraduate students across business, criminal justice, and psychology majors where at least one course in statistics was required. Students were asked about their attitudes toward statistics and the reasons for their attitudes. Five categories resulted for those with positive and negative attitudes and were separated on the basis of discipline. Approximately 63% of students indicated a positive attitude toward statistics. Business majors were most positive and were more likely to believe statistics would be used in their future career. Multiple methodological approaches have now provided data on the various domains of attitudes toward statistics and those implications are discussed.
First published November 2012 at Statistics Education Research Journal: Archives
USING THE EXPECTANCY VALUE MODEL OF MOTIVATION TO UNDERSTAND THE RELATIONSHIP BETWEEN STUDENT ATTITUDES AND ACHIEVEMENT IN STATISTICS
Authors: HOOD MICHELLE , CREED PETER A. , NEUMANN DAVID L.
Published: September 2021

We tested a model of the relationship between attitudes toward statistics and achievement based on Eccles’ Expectancy Value Model (1983). Participants (n = 149; 83% female) were second-year Australian university students in a psychology statistics course (mean age = 23.36 years, SD = 7.94 years). We obtained demographic details, past performance, attitudes, and expectancies in Week 2, and attendance records (effort) and course marks (achievement) at the end of semester. Path analysis was conducted via AMOS 19. The final model fit well and explained 40% of the variance in achievement. Past performance (22%), effort (8%), and expectancies (2%) made significant direct contributions. There were significant indirect contributions by each attitude component. Cognitive competence made the largest indirect contribution.
First published November 2012 at Statistics Education Research Journal: Archives
DO INTRODUCTORY STATISTICS COURSES IN THE UNITED STATES IMPROVE STUDENTS’ ATTITUDES?
Authors: SCHAU CANDACE , EMMİOĞLU ESMA
Published: September 2021

We examined the attitudes of about 2200 students enrolled in 101 sections of post-secondary introductory statistics service courses located across the United States. Using the Survey of Attitudes Toward Statistics-36, we assessed students’ attitudes when they entered and left their courses, as well as changes in attitudes across their courses. Results showed that, on average, students entered these courses with neutral (Affect, Difficulty), positive (Cognitive Competence, Value, Interest), and very positive (Effort) attitudes. Their attitudes either stayed about the same (Affect, Cognitive Competence, Difficulty) or decreased (Value, Interest, Effort). These results help us understand the current impact of introductory statistics instruction in U.S. institutions.
First published November 2012 at Statistics Education Research Journal: Archives
ATTITUDES AND ACHIEVEMENT IN STATISTICS: A META-ANALYSIS STUDY
Authors: EMMİOĞLU ESMA , CAPA-AYDIN YESIM
Published: September 2021

This study examined the relationships among statistics achievement and four components of attitudes toward statistics (Cognitive Competence, Affect, Value, and Difficulty) as assessed by the SATS. Meta-analysis results revealed that the size of relationships differed by the geographical region in which the studies were conducted as well as by the component of statistics attitudes being examined. Medium effect sizes were found between statistics achievement and scores on the Affect and Cognitive Competence components for studies conducted in the United States whereas those conducted in other countries yielded small effect sizes. The Value and Difficulty components exhibited small effect sizes for both regions. In every case, the U.S. effect sizes were about double in size in comparison to those from non-U.S. countries.
First published November 2012 at Statistics Education Research Journal: Archives
SURVEYS ASSESSING STUDENTS’ ATTITUDES TOWARD STATISTICS: A SYSTEMATIC REVIEW OF VALIDITY AND RELIABILITY
Authors: NOLAN MEAGHAN M. , BERAN TANYA , HECKER KENT G.
Published: September 2021

Students with positive attitudes toward statistics are likely to show strong academic performance in statistics courses. Multiple surveys measuring students’ attitudes toward statistics exist; however, a comparison of the validity and reliability of interpretations based on their scores is needed. A systematic review of relevant electronic databases yielded 532 citations, 78 of which were reviewed, and 35 included in a final analysis. Fifteen instruments were identified; however, evidence of validity and reliability has only accumulated for the Statistics Attitude Scale, Attitudes Toward Statistics Scale, and Survey of Attitudes Toward Statistics (two versions). In conclusion, a number of surveys exist, but there is a paucity of peer-reviewed validity and reliability evidence.
First published November 2012 at Statistics Education Research Journal: Archives
SERJ 2012 REFEREES
Authors: DELMAS ROBERT , PETOCZ PETER
Published: September 2021

Acknowledgment: We are grateful to the people who acted as referees for all issues of the Statistics Education Research Journal published this year.
First published November 2012 at Statistics Education Research Journal: Archives
WORRY, INTOLERANCE OF UNCERTAINTY, AND STATISTICS ANXIETY
Authors: WILLIAMS AMANDA S.
Published: September 2021

Statistics anxiety is a problem for most graduate students. This study investigates the relationship between intolerance of uncertainty, worry, and statistics anxiety. Intolerance of uncertainty was significantly related to worry, and worry was significantly related to three types of statistics anxiety. Six types of statistics anxiety were significantly lower by the end of the semester.
First published May 2013 at Statistics Education Graduate students ournal Archives
FORTHCOMING IASE CONFERENCES
Authors: DELMAS ROBERT , PETOCZ PETER
Published: September 2021

Forthcoming IASE Conferences
First published May 2013 at Statistics Education Research Journal Archives
Editorial and Front Matter
Authors: DELMAS ROBERT , PETOCZ PETER
Published: September 2021

First published November 2013 at Statistics Education Research Journal Archives
SURVEY OF NATIVE ENGLISH SPEAKERS AND SPANISH-SPEAKING ENGLISH LANGUAGE LEARNERS IN TERTIARY INTRODUCTORY STATISTICS
Authors: LESSER LAWRENCE M. , WAGLER AMY E. , ESQUINCA ALBERTO , VALENZUELA M. GUADALUPE
Published: September 2021

The framework of linguistic register and case study research on Spanish-speaking English language learners (ELLs) learning statistics informed the construction of a quantitative instrument, the Communication, Language, And Statistics Survey (CLASS). CLASS aims to assess whether ELLs and non-ELLs approach the learning of statistics differently with respect to the distinctive linguistic features of the field of statistics and with respect to language resources they bring to the class. The CLASS was administered to all (n = 137) students in an introductory statistics literacy course at a university with a majority Mexican-American student body. Findings suggest ELLs often have distinctive patterns in how they experience aspects of statistics instruction (e.g., wait time) as well as movement between mathematics/statistics and everyday registers.
First published November 2013 at Statistics Education Research Journal Archives
EXPLOITING LEXICAL AMBIGUITY TO HELP STUDENTS UNDERSTAND THE MEANING OF RANDOM
Authors: KAPLAN JENNIFER J. , ROGNESS NEAL T. , FISHER DIANE G.
Published: September 2021

Words that are part of colloquial English but used differently in a technical domain may possess lexical ambiguity. The use of such words by instructors may inhibit student learning if incorrect connections are made by students between the technical and colloquial meanings. One fundamental word in statistics that has lexical ambiguity for students is “random.” A suggestion in the literature to counteract the effects of lexical ambiguity and help students learn vocabulary is to exploit the lexical ambiguity of the words. This paper describes a teaching experiment designed to exploit the lexical ambiguities of random in the statistics classroom and provides preliminary results that indicate that such classroom interventions can be successful at helping students make sense of ambiguous words.
First published May 2014 at Statistics Education Research Journal Archives
TEACHERS’ USE OF TRANSNUMERATION IN SOLVING STATISTICAL TASKS WITH DYNAMIC STATISTICAL SOFTWARE
Authors: LEE HOLLYLYNNE S. , KERSAINT GLADIS , HARPER SUZANNE R. , DRISKELL SHANNON O. , JONES DUSTY L. , LEATHAM KEITH R. , ANGOTTI ROBIN L. , ADU-GYAMFI KWAKU
Published: September 2021

This study examined a random stratified sample (n=62) of teachers’ work across eight institutions on three tasks that utilized dynamic statistical software. We considered how teachers may utilize and develop their statistical knowledge and technological statistical knowledge when investigating a statistical task. We examined how teachers engaged in transnumerative activities with the aid of technology through representing data, using dynamic linking capabilities, and creating statistical measures and augmentations to graphs. Results indicate that while dynamic linking was not always evident in their work, many teachers took advantage of software tools to create enhanced representations through many transnumerative actions. The creation and use of such enhanced representations of data have implications for teacher education, software design, and focus for future studies.
First published May 2014 at Statistics Education Research Journal Archives
INTRODUCTORY STATISTICS COURSE TERTIARY STUDENTS’ UNDERSTANDING OF P-VALUES
Authors: REABURN ROBYN
Published: September 2021

This study aimed to gain knowledge of students’ beliefs and difficulties in understanding p-values, and to use this knowledge to develop improved teaching programs. This study took place over four consecutive teaching semesters of a one-semester tertiary statistics unit. The study was cyclical, in that the results of each semester were used to inform the instructional design for the following semester. Over the semesters, the following instructional techniques were introduced: computer simulation, the introduction of hypothetical probabilistic reasoning using a familiar context, and the use of alternative representations. The students were also encouraged to write about their work. As the interventions progressed, a higher proportion of students successfully defined and used p-values in Null Hypothesis Testing procedures.
First published May 2014 at Statistics Education Research Journal Archives
Editorial and Front Matter
Authors: PFANNKUCH MAXINE , PETOCZ PETER , DELMAS ROBERT
Published: September 2021

First published November 2014 at Statistics Education Research Journal Archives
CALL FOR PAPERS: RESEARCH ON LEARNING AND TEACHING PROBABILITY WITHIN STATISTICS
Authors: PFANNKUCH MAXINE , PETOCZ PETER , DELMAS ROBERT
Published: September 2021

First published November 2014 at Statistics Education Research Journal Archives
Presentation of a Rare Case: Acute Kidney Failure Developed Following Complete Urinary Bladder Herniation and Management of Postoperative Voiding Dysfunction
Authors: Çelik Mecit , Polat Muhammed Emin , Sarıoğlu Çağlar , Keseroğlu Buğra Bilge
Published: September 2021

Inguinal bladder herniation is seen in 1% -4% of all inguinal hernia cases; most of them are asymptomatic and come up with swelling in the groin. In symptomatic cases, nonspecific findings such as lower urinary tract symptoms or pain due to strangulation of the hernia sac are seen. Two-stage micturition (manual pressure to the scrotum to empty residual urine) is a pathognomonic sign for the advanced case. Vesicoureteral reflux (VUR), bilateral hydronephrosis, urinary tract infection, acute kidney failure and bladder wall necrosis are complications that may be seen if the problem is not appropriately managed. Preoperative diagnosis rates are low (<7%) and 16% of the cases are diagnosed in the postoperative period, and most cases are detected intraoperatively. Radiologic examination performed for other indications such as non-contrast abdominal computed tomography (CT) may diagnose the bladder herniation. CT, cystography and ultrasonography are the techniques that can be used in the diagnosis and differential diagnosis. Intraoperatively, reduction of the herniated bladder with herniorrhaphy is a routine procedure. Partial cystectomy has to be made in case of bladder wall necrosis, presence of a tumor in the herniated bladder and narrow bladder neck which don"t allow reduction. In this case report, our aim is to explain the management of left inguinoscrotal complete bladder herniation and postoperative voiding problem.