bluuebunny/crossref_metadata_2025 huggingface dataset:
Satellite and Ground Estimates of Surface and Canopy-Layer Urban Heat Island
Authors: Budhiraja Bakul , Pathak Prasad , Agarwal Girish , Sengupta Raja
Published: September 2021

The urban heat island (UHI) effect is one of the prominent impacts of urbanization that affects human health and energy consumption. As the data is limited and inconsistent, UHI comparative studies between UHIUCL and UHISurf on the seasonal scale are limited. The use of only daytime summer imagery reporting “Inverted UHI” undermines the holistic view of the phenomenon. Therefore, this study analyses the seasonal patterns for UHISurf and UHIUCL in three climate zones (Delhi, Pune, and Montreal). The three cities experience a high traditional night-time UHIUCL (Delhi 7°C, Pune 6°C, Montreal 1.89°C). Landsat captures a prominent daytime UHISurf (15°C) in Montreal with temperate climate and daytime inverted UHISurf (-4°C) for Delhi in summer. Seasonally, the night-time UHI is prominent in summer and monsoon for Delhi, summer and spring for Pune, and summer for Montreal. Due to UHI effect, the heatwaves can be more intense in semi-arid and tropical cities than temperate cities.
Unscented Particle Filter Approach for Underwater Target Tracking
Authors: Jagan B. Omkar Lakshmi , Rao S. Koteswara , Jahan Kausar
Published: September 2021

This research aims to find an appropriate approach to improve system accuracy in the Doppler-bearing tracking (DBT) problem for target estimation. The topic of DBT problem is to achieve a target trajectory using bearing and frequency measurements. The difficulty of DBT problem comes from the nonlinearity terms exposed in the measurement equations. The unscented particle filter approach is proposed to estimate the accuracy in the target motion parameters (TMP). This approach requires the observer maneuver so that the target trajectory is observable. Although in recent research papers, DBT has been proven to work efficiently without observer maneuver, TMP is unknown to the observer, and consequently, there is a need for observer maneuver. So, the algorithm is simulated with observer following s-maneuver and without any maneuver executed by the observer, and results are compared. The effectiveness of the solution and results are determined by using MATLAB simulation. It is shown that the truthfulness of the outcome is superior when the observer performs s-maneuver while compared to that without observer maneuver.
Context Reasoning for Predicting Gestational Diabetes Mellitus Using CA-RETE Algorithm
Authors: Deeba K.  , Saravanaguru R. A. K.
Published: September 2021

Today, IoT-related applications play an important role in scientific world development. Context reasoning emphasizes the perception of various contexts by means of collection of IoT data which includes context-aware decision making. Context-aware computing is used to improve the abilities of smart devices and is increased by smart applications. In this paper, context-aware for the internet of things middleware (CAIM) architecture is used for developing a rule-based system using CA-RETE algorithm. The objective of context-aware systems are concentrated on 1) context reasoning methodologies and analyzing how the technologies will involve enhancing the high-level context data, 2) framework of context reasoning system, 3) implementation of CA-RETE algorithm for predicting gestational diabetes mellitus in healthcare applications.
Wide Band Micro-Strip Antenna Design for Higher “X” Band
Authors: Tiwari Praveen , Malik Praveen Kumar
Published: September 2021

The article uncovers a rectangular multi-opening microstrip reception apparatus with wideband working frequencies for the uses of the 'X' band. Grave choice of measurement, the situation of feed, and opening are mulled over lady to accomplish the objective properties of the reception apparatus. Articulate receiving wire execution parameters like return misfortune, voltage standing wave proportion, increase, and effectiveness are determined utilizing the reception apparatus plan programming. Created results are additionally approved with the manufactured receiving standards. Sets of rectangular equal openings are cut on the fix for radiation. The significant recurrence of activity of the reception apparatus is between 11-12GHz, and data transmissions are in the scope of 250 MHz to 2.5 GHz at different frequencies. Discretionally, other execution parts of the receiving antenna are likewise in won understanding. Structured receiving antennae are straightforward, easy, light in weight, and furthermore simple to produce. Union with these elements receiving antennae is adjusted and is likewise having a wide scope of working recurrence.
Kernel-Based Machine Learning Models to Predict Mitigation Time During Cloud Security Attacks
Authors: Kadiri Padmaja , Ravala Seshadri
Published: September 2021

Security threats are unforeseen attacks to the services provided by the cloud service provider. Depending on the type of attack, the cloud service and its associated features will be unavailable. The mitigation time is an integral part of attack recovery. This research paper explores the different parameters that will aid in predicting the mitigation time after an attack on cloud services. Further, the paper presents machine learning models that can predict the mitigation time. The paper presents the kernel-based machine learning models that can predict the average mitigation time during security attacks. The analysis of the results shows that the kernel-based models show 87% accuracy in predicting the mitigation time. Furthermore, the paper explores the performance of the kernel-based machine learning models based on the regression-based predictive models. The regression model is used as a benchmark model to analyze the performance of the machine learning-based predictive models in the prediction of mitigation time in the wake of an attack.
E-Participation Within E-Government
Authors: Shaikh Abdul Khalique , Ahmad Nisar , Khan Imran , Ali Saqib
Published: September 2021

Through a bibliometric approach, this paper presents the results of a systematic review of the literature pertaining to e-participation and e-government. The objective of the review was to map the evolution of the current literature and identify the leading sources of knowledge in terms of the most influential journals, authors, and articles. From a total of 235 relevant articles, selected from the Scopus database, detailed citation analysis was conducted. The analysis of citation data showed that Government Information Quarterly is the leading journal in e-participation research. Lee Jooho was found to be the leading author in this field in terms of a total number of publications, total citations, and h-index, while the most cited article was authored by Vicente and Novo in 2014. The study further explored the conceptual structures such as word cloud, word dynamic trends, co-word analysis, and bibliometric coupling to show the trends. The contribution of this study is to clearly outline the current state of knowledge regarding e-participation and e-government services in the literature.
Exploring the Relationship Between Technology Adoption and Cyber Security Compliance
Authors: Saeed A Alqahtani Mohammed , Erfani Eila
Published: September 2021

IT infrastructure and systems are made up of technical and social systems that work together to ensure that organization's goals and objectives are met. Security controls and measures are developed and used to protect an organization's data and information systems. To improve cyber security, organizations focus most of their efforts on incorporating new technological approaches in products and processes, leaving out the most important and vulnerable factor. So this study intends to provide some practical implications to the technology developers and policymakers while identifying the factors that affect cyber security compliance in an organization or home environment for general users, HR, IT administrators, engineers, and others. It explored the Unified Theory of Acceptance and Use of Technology 2 (UTAUT2) model and assessed the effect of its factors on cyber security compliance in organizations.
Implementation of a Multimodal Academic Literacy Resource at a South African University
Authors: Andrianatos Kristien
Published: September 2021

As a lecturer at a higher education institution in South Africa, the author is conscious of an emphasis placed on multimodal resources as part of the globally experienced shift to teach remotely due to the COVID-19 epidemic. In this autoethnographic study, she critically reflects on her experience in planning and executing the implementation of a custom-made multimodal resource called WIReD. WIReD is an acronym for writing, information literacy and reading development. She situates academic literacy and WIReD within the theoretical framework of multiliteracies, and thereafter provides background in terms of the study context and gives a brief description of WIReD. The methodology section includes the data used, a brief discussion on validity, reliability, and the reflexive process. The data analysis led to two broad categories of implementation inhibitors, namely inadequate resources and collaboration. These hindrances highlight broader issues with regard to institutional management, lecturers, and the needs of students in the South African higher education context.
Crop Insurance Prediction Using R for Pradhan Mantri Fasal Bima Yojana in TamilNadu
Authors: Beula D. Hebsiba , Srinivasan S. , Kumar C. D. Nanda
Published: September 2021

Agriculture is the primary source of livelihood for farmers in many underdeveloped regions, so due to climate change or other risks, crop insurance is thought to be essential, but the research question answered in the current study pertains to insurance program performance. The government-administered crop insurance program was analysed using a mixed methods design. A multiple case study was conducted in the TamilNadu region (India) to analyse the program, identify the causal factors, and collect relevant claim secondary data. Then the R statistical program was applied to analyse crop performance by developing a linear model of crop actual yields versus threshold yields (rabi, paddy, and kharif) using claim payments as the dependent variable. R statistical regression model programming was explained in detail. Recommendations were provided to economic decision makers on how to enhance agricultural insurance and rural development.
Evaluation of Consumer Reviews for adidas Sports Brands Using Data Mining Tools and Twitter APIs
Authors: Singhvi Vishu , Srivastava Prateek
Published: September 2021

The sportswear industry has become prominent, popular, and a very obvious category among various age groups in India. Big sports brands like adidas, seeing the Indian market potential, have extended their businesses across the country. To increase sales, online purchase has become one the most effective, easy, cheap, and quickest solution for the end customers as it provides the end consumers a variety of products, their designs, and color combinations on clicks. A large number of consumers express what exactly the end customer thinks about a particular product's preference level of brand, quality of service, quality of product, or stylish nature of the product. The current study does an evaluation of such online comments and reviews giving their feedback on their public Twitter accounts, flipkart.com, or amazon.in about an adidas sports brand in India. The research also provides a basic flow of Java program in the form of an algorithm that is used to collect the dataset from Twitter, process it, and export it into an Excel sheet for further investigation.
Organizational Commitment and Its Impact on Job Performance
Authors: Al-Tarawneh Khalaf
Published: September 2021

This study aimed to identify the availability level of organizational commitment (OC) among employees in the Jordanian commercial banks, as well as to measure its impact on their job performance (JP). To achieve the objective of the study, 257 copies of the questionnaire were distributed to a random sample of employees at all administrative levels in the Jordanian commercial banks. The results of the study have indicated that OC is available in Jordanian banks with a high degree. Moreover, it has showed that the emotional commitment is the most prevailing commitment. The study showed that there is a significant positive impact of OC on the JP. The study recommended that it is very important to set strategic plans to promote OC among the employees of Jordanian commercial banks.
Zinc Oxide Thin Film Morphology as Function of Substrate Position During Sputtering Process
Authors: Habis Christelle , Zaraket Jean , Aillerie Michel
Published: September 2021

Transparent conductive oxides are materials combining great transparency with high conductivity. In photovoltaic applications, they are developed under thin layer for the realization of upper electrodes of solar cells. Among transparent oxide materials, Zinc Oxide (ZnO) presents unique properties, starting with its first qualities to be abundant, low-cost and non-toxic oxide. Zinc Oxide thin film was deposited on rectangular glass substrate by magnetron sputtering. After an overview of the properties expected for good transparent conductive materials, the effect of distance from the center of the cell on the morphology of the film was investigated by Atomic Force Microscopy (AFM). The scanning was done on different area of the sample as function of the distance from the central position of the direct sputtering jet. As far as the distance increased, it has been noticed a quasi-linear increase in thickness of the ZnO deposited film and a change in the grain shape from spherical to pyramidal with an increase in the size of the particles. Controlling the sputtering distance allows the control of texture, thus of the Haze factor, the photo-generation of excitons, as well the optical transmission of the TCO layer and finally an improvement in the efficiency of the so-built photovoltaic cells.
Preparation and Characterization of Nickel Doped Cadmium Sulfide Nanostructure Thin Films via Spray Pyrolysis Method
Authors: Jameel Zainab Naser , Rashed Halah H.
Published: September 2021

Pure and nickel-doped cadmium sulphide (NixCd1-xS where x= 2.5%, 5%, 7.5%) nanostructure thin films were successfully prepared by spray pyrolysis method on glass substrate at 350 °C. The films characterized using X-ray crystallography diffractmeter, Scanning Electron Microscope, Atomic Force Microscope and Uv-visible analysis in order to explore the properties of thin film. Structural studies revealed that the deposited films exhibit hexagonal structure with strong intensity at (002) plane. Structural parameters such as crystallite size, strain and dislocation density were calculated for films with different doping concentration. AFM measurements showed that the average diameter increased with increasing Ni doping, where surface roughness and root mean sequre decreased with increasing Ni doping, SEM images show that thin film have been grown and converted into nanowire with increasing of Ni content.Finally, Uv-visible analysis show that the optical band gap of CdS decreased from 2.44 to 2.38 eV with increasing of Ni doping concentrations.
Study the Effect of Heat Treatment and Pressure on some the Optical Properties of the Pure PVA Nano Polymer
Authors: Awad Tabarak Mohammed , Mohammed May A.S.
Published: September 2021

In this study, some optical properties were studied of the pure vinyl polyvinyl alcohol (PVA) nanopolymer (German origin). Under the influence of different temperatures and pressures of PVA. Where 25 samples were prepared for the purpose of conducting the research. Which studied the study of these samples was done by recording the absorbance and transmittance spectra of the wavelengths (200-900) nm. From them, absorbance, transmittance, reflectivity, absorption coefficient, refractive index, extinction coefficient, complex dielectric constant were calculated. At different temperatures (25,40, 80, 120, 160)°C. And with different pressures within the range (7.5,8,8.5,9,9.5) MPa. The results are that the permeability of the polymer (PVA) at different temperatures for each pressure decreases with increasing temperature, and that all other calculated optical properties increase with increasing temperature.
Theory of Charge Transfer Reaction Process at the Sensitizers Molecule Dye N3 Contact with MgO Semiconductor
Authors: Sabri Nada Adnan , Al-Agealy Hadi J.M.
Published: September 2021

A theoretical charge transport rate approach has taken to study the charge transfer properties in non-homogeneous N3-MgO systems. It develops at the fully quantum transition theory by means of transition energy, potential, driving energy and coupling constant. It is obtained that transition energy is determined by the donor acceptor scenario, dependent on the radii of N3 and MgO, dielectric constant and refractive index of solvents. The transition energy of charge carriers increased with increased dielectric constant and decreased refractive index of solvents. Transition energy of N3-MgO system reach to top with methanol (0.582 ev) and has minimum with Chlorobenzene (0.104eV). Dependences of the driving energy versus chemical potential of N3 dye and conduction band of semiconductor with potential barrier, the charge transfer rate are increased with decreased driving force of system. It is established that increased coupling constant factor reduces to increased charge transfer rate.
Creep Parameters Determination by Omega Model to Norton Bailey Law by Regression Analysis for Austenitic Steel SS-304
Authors: Sattar Mohsin , Othman A. Rahim , Kamaruddin Shahrul , Azad Alam Mohammad , Azeem Mohammad
Published: September 2021

In the material’s creep failure analysis, the difficulty of assessing the applied thermo-mechanical boundary conditions makes it critically important. Numerous creep laws have been established over the years to predict the creep deformation, damage evolution and rupture of the materials subjected to creep phenomena. The omega model developed by the American Petroleum Institute and Material Properties Council is one of the most commonly used creep material models for numerical analysis over the years. It is good in defining the fitness of mechanical equipment for service engineering evaluation to ensure the reliable service life of the equipment. The Omega model, however, is not readily accessible and specifically incorporated for creep evaluation in FEA software codes and creep data is always scarce for the complete analysis. Therefore, extrapolation of creep behavior was performed by fitting various types of creep models with a limited amount of creep data and then simulating them, beyond the available data points. In conjunction with the Norton Bailey model, based on API-579/ASME FFS-1 standards, a curve fitting technique was employed called regression analysis. From the MPC project omega model, different creep strain rates were obtained based on material, stress and temperature-dependent data. In addition, as the strain rates increased exponentially with the increase in stresses, regression analysis was used for predicting creep parameters, that can curve fit the data into the embedded Norton Bailey model. The uncertainties in extrapolations and material constants has highlighted to necessitate conservative safety factors for design requirement. In this case study, FEA creep assessment was performed on the material SS-304 dog bone specimen, considered as a material coupon to predict time-dependent plastic deformation along with creep behavior at elevated temperatures and under constant stresses. The results indicated that the specimen underwent secondary creep deformation for most of the period.
Processing of Cf/SiC Composites through Two-Channel Temperature-Control CVI: I, Modeling
Authors: Wang Peng Fei , Luo Sheng Feng , Zhang Hui , Zhang Song , Zheng Li Li
Published: September 2021

A two-channel temperature-control CVI scheme was proposed to fabricate thicker and denser composites. The two-channel structure helps to densify a thick preform, and a precise temperature control will guarantee a low and uniform porosity distribution. Validation simulations containing hydrodynamics, mass transfer, heat transfer and pore structure evolution were first carried out. Modeling results confirm that a two-step densification based on the new scheme can work well: At step I, all gases pass through the preform and the high-temperature bottom-preform is densified; At step II, by altering the outlet, temperature and infiltration time, part of gases are sucked into the preform and the remaining coarse preform is densified. The scheme can fabricate tick, uniform and dense composite, it can also avoid huge pump pressure thus protecting fibers from cracking. It is hoped to enlighten the CVI processing of ceramic matrix composites.
Effect of Solution Treatment on Cavitation Erosion Resistance of Duplex Stainless Steel Surfacing Layers
Authors: Wang Zi Rui , Bao Ye Feng , Song Qi Ning , Yang Ke , Jiang Yong Feng
Published: September 2021

In the present work, the possibility of using solution treatment to improve the cavitation erosion resistance of the duplex stainless steel surfacing layers was discussed. The effect of solution treatment on cavitation erosion resistance of duplex stainless steels was investigated. The results showed that the solution treatment can adjust the ratio of ferrite to austenite, reduce the precipitation content, and make the incubation period longer, leading to an increase in the cavitation erosion resistance of the duplex stainless steel surfacing layers. The sample treated at 900°C and water quenching was shown to have the best resistance to the absorption of the energy produced by cavitation erosion, and hence the best cavitation erosion resistance.
Investigation on the Performance of Al7075 Alloy Surface Repaired by Cold Spray Coating Technology
Authors: Kiliçay Koray , Dayi Salih Can
Published: September 2021

Repairing different waste parts is an attractive issue due to the cost of repaired parts is much lower than the cost produced by conventional methods. In this study, the Al7075 aluminium alloy surface was repaired using the Ni-Zn-Al2O3 powder by the cold spray coating method. The microstructure, micro-hardness, and tribological performance of the repaired zone were determined. The microstructure of repaired zone consisted of ceramic Al2O3 particles embedded in the Ni and Zn metal matrix, similar to a lamellar structure. The average microhardness value of the repaired area was about 4.3% higher than the Al7075 substrate. Although the average coefficient of friction had increased in the repaired area, the wear rate had decreased approximately 1.3 times. As a result of the FESEM examination of the wear channels, the main wear mechanism of the Al7075 material was abrasive, while the main wear mechanism of the sample repaired with cold spray coating was determined as adhesive wear. Consequently, it increases the service life of the part, as the repaired zone with cold spray coating shows approximately 1.3 times better wear performance than Al7075.
A Systematic Dry-Needling Treatment to Support Recovery Posttraining for Division I Ice Hockey Athletes: An Exploration Case Series
Authors: Brewster Brian D. , Snyder Valier Alison R. , Falsone Sue
Published: September 2021

Context

For this case series, 4 student-athletes (age range = 20–22 years) participating in National Collegiate Athletic Association Division I ice hockey served as cases. They were free of injury and participated in all team activities without restrictions.

Treatment

A dry needling (DN) lower extremity recovery protocol was completed for all athletes during a single session. To administer the DN recovery treatment, we placed static needles in specific bilateral locations that consisted of 5 points on both the anterior and posterior aspects of the lower extremity and lumbopelvic complex. The Acute Recovery Stress Scale was used to evaluate the effect of the DN recovery treatment on each athlete's perception of recovery at 24 and 48 hours post-DN treatment.

Results

Overall, total and average scores of Acute Recovery Stress Scale for all cases were closer to baseline at 48 hours post-DN than at the other time points.

Conclusions

Recovery techniques historically have been used postactivity because even normal training loads, which are considered positive, produce stress and fatigue in athletes and can lead to injury. Results from this case series suggest that ice hockey athletes who are experiencing postexercise stress, such as soreness and fatigue, may benefit from a lower extremity DN recovery treatment protocol.
Seroepidemiology of TORCH Infections among 1.7 Million Women of Childbearing Age in Rural China: A Population-Based Cross-Sectional Study
Authors: Qin Xiaosong , Zhang Shikun , Liu Hongbo , Cheng Guixue , Liu Yong , Hu Mei , Liu Na , Zhang Man
Published: September 2021

We conducted a national seroepidemiological study of the TORCH (Toxoplasma gondii [TOX], Rubella [RV], Cytomegalovirus [CMV], and Herpes Simplex Virus) in rural women to provided updated baseline data on TORCH prevalence. A total of 1,541,329 women of childbearing age were gathered from 2010 to 2012 in China. Of these, 858,072 women were tested positive for anti-RV IgG antibodies, 602,251 women were tested positive for anti-CMV antibodies, and 40,055 women were tested positive for anti-TOX antibodies. TORCH prevalence was highest among young adults (aged 25–34 years; P < 0.0001). A total of 69,220 women (4.49%) had received RV vaccination, of whom 49,988 (72.2%) had vaccine-acquired immunity. Of 1,541,329 women, 6,107 (0.40%) tested positive for anti-TOX IgM antibodies and 6,646 (0.43%) tested positive for anti-CMV IgM antibodies, suggesting the presence of TOX and CMV infections. TORCH markers were all more prevalent in the eastern region of China than in the central or western regions (all P < 0.0001). Prevalence rates related to all recent infection markers of TOX and CMV increased with increasing age in all regions (P < 0.0001). TORCH prevalence rates were found to be lower than previously published rates. This may be attributed to improvements in living standards and health habits in China. However, considering that the decrease in prevalence has led to an increase in the number of susceptible people, and the partial immunity caused by some pathogenic infections still leave infected people at risk of reinfection, strengthened vaccination and health education is essential to improve the quality of life of the Chinese population.
A Machine Learning Model for Evaluating Imported Disease Screening Strategies in Immigrant Populations
Authors: Fernández-Martínez Juan L. , Boga José A. , de Andrés-Galiana Enrique , Casado Luis , Fernández Jonathan , Menéndez Candela , García-Pérez Alicia , Moran-Suarez Noelia , Martinez-Sela María , Vázquez Fernando , Rodríguez-Guardado Azucena
Published: September 2021

Given the high prevalence of imported diseases in immigrant populations, it has postulated the need to establish screening programs that allow their early diagnosis and treatment. We present a mathematical model based on machine learning methodologies to contribute to the design of screening programs in this population. We conducted a retrospective cross-sectional screening program of imported diseases in all immigrant patients who attended the Tropical Medicine Unit between January 2009 and December 2016. We designed a mathematical model based on machine learning methodologies to establish the set of most discriminatory prognostic variables to predict the onset of the: HIV infection, malaria, chronic hepatitis B and C, schistosomiasis, and Chagas in immigrant population. We analyzed 759 patients. HIV was predicted with an accuracy of 84.9% and the number of screenings to detect the first HIV-infected person was 26, as in the case of Chagas disease (with a predictive accuracy of 92.9%). For the other diseases the averages were 12 screenings to detect the first case of chronic hepatitis B (85.4%), or schistosomiasis (86.9%), 23 for hepatitis C (85.6%) or malaria (93.3%), and eight for syphilis (79.4%) and strongyloidiasis (88.4%). The use of machine learning methodologies allowed the prediction of the expected disease burden and made it possible to pinpoint with greater precision those immigrants who are likely to benefit from screening programs, thus contributing effectively to their development and design.
Case Report: Invasive Sinusitis due to Sporothrix Brasiliensis in a Renal Transplant Recipient
Authors: Nepomuceno Araújo Maria Júlia Correia Lima , Nihei Camila Hitome , Rodrigues Anderson Messias , Higashino Hermes , Ponzio Vinicius , Campos Pignatari Antonio Carlos , Barcellos Maria Alice , Braga Osni , Duayer Irene Faria
Published: September 2021

Sporotrichosis is usually a subcutaneous infection caused by thermodimorphic fungi of the genus Sporothrix. The disease occurs worldwide, but endemic areas are located in tropical and subtropical regions. The epidemiology of sporotrichosis in Brazil is peculiar because of the cat’s entry in the chain of transmission of this mycosis, associated with Sporothrix brasiliensis, the most virulent species in the genus. Sinusitis caused by Sporothrix species is unusual and may be underdiagnosed or confused with other fungal etiologies, like mucormycosis. We report a case of sinusitis due to a Sporothrix species in a 6-year renal transplant recipient. Direct examination of smears of exudate of the sinus specimen (aspirate, biopsy) revealed budding yeasts and cigar-shaped cells. Sporothrix was subsequently recovered from the patient’s exudate culture and identified as S. brasiliensis using species-specific polymerase chain reaction, and she was successfully treated with antifungal therapy. Her parents also developed the disease a week later, both only cutaneous involvement. Sporotrichosis sinusitis is a rare disease, even in immunocompromised patients. Diagnosis is crucial, and benefits from good epidemiological history.
Allergy to Mammalian Meat Linked to Alpha-Gal Syndrome Potentially After Tick Bite in the Amazon: A Case Series
Authors: Epelboin Loïc , Roche Florent , Dueymes Maryvonne , Guillot Geneviève , Duron Olivier , Nacher Mathieu , Djossou Félix , Soria Angèle
Published: September 2021

The past decade has seen the emergence of a new type of food allergy occurring after ingestion of mammalian meat. This allergy is related to immunoglobulin (Ig)E specific for galactose-alpha-1,3 galactose (α-Gal). Originally described in the United States in 2009, other cases have subsequently been described in Australia and in Europe, but still very few in Latin America. The purpose of this study was to show the existence of this pathology in French Guiana and to describe the historical, clinical, and biological characteristics of these patients. Patients reporting an allergy to mammalian meat were included between September 2017 and August 2019. Eleven patients were included, nine of whom exhibited digestive symptoms; four, urticaria reactions; three, respiratory reactions; and five angioedema. The time between ingestion of red meat and reaction varied between 1.5 and 6 hours. The implicated meats were most often beef and pork. All patients had been regularly exposed to tick bites before the appearance of symptoms. All the samples (n = 7) were positive for anti-α-Gal anti-mammalian meats IgE. All the patients were Caucasian French expatriates. This study confirms the presence of this new entity in French Guiana and is the largest reported in Latin America. Our results do not clearly allow us to state that tick bites are the cause of this allergy, but all patients reported being exposed regularly to these arthropods.
Effect of the COVID-19 Pandemic Preparation and Response on Essential Health Services in Primary and Tertiary Healthcare Settings of Amhara Region, Ethiopia
Authors: Enbiale Wendemagegn , Abdela Seid Getahun , Seyum Meaza , Bedanie Hundie Dereje , Bogale Kassawmar Angaw , Tamirat Koku Sisay , Feleke Mulat Birhanu , Azage Muluken , Nigatu Dabere , de Vries Henry J. C.
Published: September 2021

Countries like Ethiopia have had to make difficult decisions to balance between the demands of the COVID-19 pandemic and maintaining the essential health service delivery. We assessed the effect of preventive COVID-19 measures on essential healthcare services in selected health facilities of Ethiopia. In a comparative cross-sectional study, we analyzed and compared data from seven health facilities over two periods: the pre-COVID-19 period before the first reported COVID-19 case in the country and during the COVID-19 period. Data were summarized using descriptive statistics and the independent t test. During the COVID-19 period the average number of monthly patient visits in the emergency department, pediatrics outpatient, and adult outpatient dropped by 27%, 30%, and 27%, respectively compared with the pre-COVID-19 period. Family planning; institutional delivery; childhood immunization; antenatal care-, hypertension- and diabetic patient follow-up, did not vary significantly between pre-COVID-19 and during COVID-19. Moreover, the monthly average number of tuberculosis (TB) and HIV patients who visited health facilities for drug refill and clinical evaluation did not vary significantly during the two periods. In conclusion, the study highlights that the effect of public restrictions to mitigate the COVID-19 pandemic on essential care systems should be considered.
COMPORTAMIENTO Y LEALTAD DEL CONSUMIDOR SOBRE LOS ESTABLECIMIENTOS GASTRONÓMICOS DE QUITO POR EFECTO DEL COVID-19
Authors: Salazar-Duque Diego , Burbano Camila , Portugal Carolina , Guamialama Jaime
Published: September 2021

La presente investigación analiza los factores que influyen en el comportamiento y la lealtad del consumidor sobre los establecimientos gastronómico por el impacto que ha generado en el individuo el COVID-19. Para ello, se toma como base aquellos estímulos del entorno y del marketing mix que influyen en la lealtad del consumidor, así como el proceso de compra. La metodología considerada para este estudio es de carácter cuantitativa; para ello se levantó la opinión pública de 600 personas; consecuentemente se consideró un análisis de fiabilidad basado en el cálculo del coeficiente alfa de Cronbach y un análisis factorial exploratorio mediante el cálculo de los coeficientes de correlación argumentada por el test estadístico de Bartlett y el KMO. Como resultado principal se puede observar que aquellos estímulos que provienen del entorno como aquellos que son generados por las empresas a partir del marketing mix, influyen significativamente en la lealtad hacia una empresa del sector de alimentos y bebidas. Se concluye que, los estímulos del entorno, los estímulos del marketing mix y el proceso de compra influyen significativamente en la lealtad en el sector de alimentos y bebidas.

Palabras claves: comportamiento del consumidor, lealtad, marketing mix, proceso de compra.
Students’ Responses to Multi-Modal Emergency Remote Learning During COVID-19 in a South African Higher Institution
Authors: Matarirano Obert , Gqokonqana Onke , Yeboah Abor
Published: September 2021

COVID-19 pandemic forced several higher education institutions (HEI) to operate remotely. Emergency remote teaching, using synchronous and asynchronous instruction, was adopted by several HEIs. The experiences of students with remote teaching and learning in certain situations are not fully understood, thus need to be explored. This study explored the experiences of students with the emergency remote teaching and learning practices adopted at a selected HEI in South Africa. A cross-sectional and self-administered survey was used to gather data from 243 conveniently sampled returning students within the Department of Accounting and Finance. Descriptive statistics were used to make sense of the collected data. The study found that students preferred a face-to-face approach to learning to remote learning. The respondents underscored insufficient data, unstable network connection, unconducive home environments and loneliness as deterrents to effective remote learning. Despite these negative experiences, students appreciated the flexibility and convenience of recorded video lectures and acknowledged the compassion and support of lecturers during remote learning. An understanding of the experiences of students during remote learning provides a basis for future teaching plans, which would improve students' learning experiences. In its current format and students living in their home environments, remote learning greatly diminishes the chances of success for most students. Lecturers need to be compassionate and considerate of student’s struggles in their plans for remote teaching and learning as well as online learning.
“CORDEL-JORNAL” E O ATIVISMO NEGRO: OS CORDÉIS DA POETISA JARID ARRAES
Authors: Souza Pereira Diego Ramon
Published: September 2021

As manifestações artísticas constituem-se como ferramentas de construção e apreensão da realidade para pesquisas em Ciências Sociais e Humanas, portanto as artes não só retratam como também modifica/transforma a realidade. Diante deste cenário o texto a seguir teve como ponto de partida o seguinte problema de pesquisa: Como a poetisa Jarid Arraes mobiliza através da literatura de cordel um ativismo negro feminista? Buscar-se-á compreender dessa maneira como Arraes mobiliza a literatura de cordel para dar visibilidade ao seu ativismo. Em relação ao método foi escolhido a análise de conteúdo (AC) através dos instrumentos para geração e análise das representações a partir da construção de categorias e códigos. Chegou-se, portanto, aos resultados, os quais indicam uma relação íntima entre o cordel e a arte produzida por esta autora com algumas nuances sobre o que tradicionalmente se chamou de escrita popular.
O TROPICALISMO E SEU PROJETO POLÍTICO IDEOLÓGICO: UM EXERCÍCIO DE LEITURA
Authors: Marino Rafael
Published: September 2021

Este ensaio pretende expor algumas notas de pesquisa a respeito do tropicalismo. Sabe-se que tropicália já fora tema de diversos estudos nas ciências humanas e sociais, contudo aposta-se num outro ângulo para seu estudo: o seu projeto político e ideológico. Este projeto, segundo nossa hipótese, teria logrado consolidar um modo de pensar o Brasil que, grosso modo, baseava-se na transfiguração das especificidades sociais e culturais do Brasil em qualidades e respostas de nossa ‘civilização’ brasileira perante o mundo e seus problemas. Dando consecução ao nosso argumento, exporemos alguns lineamentos dos pensamentos de alguns personagens destacados da tropicália sobre o Brasil. Para tal, lançaremos mão de alguns escritos e depoimentos de seus partícipes.
Crashworthiness Performance of Al6061 Tubes with Stiffened Quatrefoil Sections under Axial and Oblique Impact Conditions
Authors: KOCABAŞ İbrahim , YILMAZ Haluk
Published: September 2021

This study presents the crashworthiness performance of Al6061 tubes with stiffened quatrefoil sections under axial and oblique impact conditions. Influences of different types of stiffeners through the depth of tubes in the design of a quatrefoil sectional crash absorber structure are investigated, numerically. Four types of stiffener patterns are considered under oblique impact angles of 0º, 10º, 20º, and 30º measured from the horizontal axis. Force-displacement characteristics, deformation patterns, and crashworthiness indexes of the tested tubes are given to decide optimal crash absorber configuration. The numerical tube models are placed between two rigid plates and an axial impact speed of 1m/s is considered in the numerical study. Al6061 series aluminum alloy is used as a tube material with a multi-linear material model assuming strain-rate independent properties. It is found that the crashworthiness performance is very sensitive to impact angle and Q-S-4 type stiffeners can be proposed for a better tube design.
Utilização do BIM e da RA na AEC: uma revisão sistemática da literatura
Authors: Sato Michele Natsumi , Scheer Sergio
Published: September 2021

O objetivo deste artigo é identificar, analisar e classificar através da Revisão Sistemática da Literatura (RSL) artigos científicos, em inglês e português brasileiro, relacionados a integração do Building Information Modeling (BIM) e Realidade Aumentada (RA) com aplicação na Arquitetura, Engenharia e Construção (AEC). Os resultados mostraram que desde 2010 tem crescido o interesse dos pesquisadores por esse tema no mundo. Os EUA lideram em relação a quantidade de publicações de artigos em inglês, e a maior parte dos trabalhos em inglês focaram na questão da visualização do projeto BIM através de RA. No Brasil, os primeiros registros são de 2013; a Unicamp tem liderado em quantidade de publicações, sendo que, as pesquisas nacionais focam mais no desenvolvimento e experimentação de aplicativos que integram BIM e RA. Através deste estudo pode-se perceber que as pesquisas relacionadas ao tema começaram tarde, mas têm crescido nos últimos tempos e ainda há muitas oportunidades de pesquisas com enfoque nesse tema.
Integração de modelos físicos com modelos BIM utilizando IoT e Forge
Authors: Araújo Caroline Silva , Batista Ana Clara Malheiro Smera , Lima Bruno Fonseca Coelho , Ferreira Emerson de Andrade Marques
Published: September 2021

A Internet das Coisas (IoT) está presente em muitas indústrias e possibilita a comunicação entre dispositivos existentes no cotidiano humano através da Internet, além de fornecer informações em tempo real sobre mudanças no estado das coisas. A Modelagem da Informação da Construção (BIM) representa um avanço para o setor da Arquitetura, Engenharia, Construção e Operação (AECO) devido à sua capacidade de produzir modelos virtuais que se aproximam da realidade e de promover maior integração para projetos. Apesar da sua ampla utilização, algumas funcionalidades do BIM ainda são pouco exploradas, como a representação do estado de objetos em tempo real. Esta representação pode ser alcançada por meio da associação com a IoT. O objetivo do estudo é avaliar o processo de integração de modelos físicos com modelos BIM utilizando IoT e Forge, uma plataforma que expande as funcionalidades do BIM, buscando desenvolver aplicações futuras para AECO. Para realizar essa avaliação, elaborou-se um sistema utilizando Arduino IDE, placa ESP8266, Firebase, Forge, Revit e circuitos eletrônicos. O experimento comprovou a possibilidade de conexão entre os modelos através de um fluxo bidirecional de dados, enviando comandos para os atuadores, coletando dados dos sensores e cumprindo o objetivo de integrar modelos físicos com modelos BIM.
Os softwares de realidade virtual para o projeto de arquitetura na era da quarta revolução industrial: uma análise comparativa
Authors: Zancaneli Mariana Alves , Chagas Icaro , Braida Frederico , Ferreira Isabela de Mattos
Published: September 2021

Este artigo aborda o tema da Realidade Virtual (RV) como uma tecnologia para auxiliar o projeto arquitetônico no contexto da Indústria 4.0. Desta forma, discute-se a seguinte questão: quais são as características e qualidades dos principais softwares de RV voltados ao campo da Arquitetura? O objetivo principal é criar um gráfico comparativo entre quatro diferentes programas voltados para a realidade virtual em arquitetura e suas principais características de desempenho e usabilidade. Metodologicamente, este trabalho é resultado de uma revisão de literatura, seguida da análise de quatro softwares de RV destinados à arquitetura. No final, descortina-se uma visão geral da situação atual de um dos componentes importantes para os profissionais da área que desejam usar a tecnologia de RV em seus projetos e que estão verdadeiramente inseridos no contexto da Indústria 4.0. Isso abre novas oportunidades para os arquitetos adicionarem outra maneira de apresentar e comunicar seus projetos e ideias, para que possam ser cada vez mais colaborativos com os envolvidos, buscando melhores resultados e soluções de projeto.
Gerenciamento de resíduos da construção com BIM para uma economia circular: uma estrutura conceitual
Authors: Miara Renata , Scheer Sergio
Published: September 2021

O BIM (modelagem da informação da construção) vem sendo desenvolvido de diferentes maneiras para apoiar a construção de edifícios mais sustentáveis. No entanto, em relação a um dos principais aspectos da sustentabilidade das edificações: a geração de resíduos, o BIM vem sido tratado como uma ferramenta mágica capaz de resolver todos os problemas. Estimar o desperdício gerado é vital a fim de minimizá-lo na etapa de projeto. Este ponto de vista permite aos projetistas visualizar e explorar possíveis medidas corretivas, a fim de aumentar a eficiência da construção. Além disso, pode permitir que os construtores identifiquem processos críticos e planejem estratégias de controle. Integrando diferentes projetos em um único modelo, o processo BIM pode ajudar na solução deste desafio. Com base em uma revisão sistemática da literatura e um questionário realizado com arquitetos e engenheiros de Curitiba – Brasil, este trabalho tem como objetivo propor uma estrutura conceitual para um sistema de gestão de resíduos de construção, integrando todas as etapas do ciclo de vida e visando a economia circular. A estrutura proposta garante a redução da utilização de novos materiais e a sua melhor utilização, e se implementada poderá impulsionar as práticas de gestão de resíduos no setor da construção.
Método BIM: Análise estrutural para um galpão metálico, utilizando Revit & Robot
Authors: Cunha Alice de Mello , Araújo Thiago Thielmann , Ribeiro Danielle Malvaris
Published: September 2021

O conceito BIM (Modelagem da Informação da Construção) gera a melhoria na integração dos dados pela da “interface” de programas que permitem a colaboração entre Arquitetura, Engenharia e Construção, por meio da bidirecionalidade. Neste sentido, o presente estudo objetivou elencar as etapas de elaboração da análise estrutural de um galpão metálico disponibilizado pelo Centro Brasileiro da Construção em Aço (CBCA) por meio da modelagem dos elementos (perfis metálicos) utilizando a ferramenta Revit Structure utilizando o plug-in (comunicação direta) para o software Robot Structural Analysis. O projeto foi desenvolvido considerando a inserção de dados no programa de análise e as prescrições da ABNT NBR8800/08 (software Excel) para assegurar os resultados gerados pelo Robot utilizando a norma Americana AISC 360-10. Por fim, concluiu-se que, mediante ajustes, a comunicação entre os softwares Revit Robot foi satisfatória para um fluxo de trabalho BIM com atendimento às normas brasileiras.
Identificação de riscos e proposições de melhoria na segurança do trabalho em canteiro de obras com auxílio do BIM
Authors: Melo Adriana Virgínia Santana , Fernandes Luara Lopes de Araujo , Ferreira Emerson de Andrade Marques , Costa Dayana Bastos
Published: September 2021

O setor da construção ainda é líder em acidentes de trabalho no Brasil e no mundo e uma das formas de preveni-los é investir no planejamento da segurança no canteiro. Há um grande potencial de identificação e visualização dos problemas associados à segurança do trabalho em canteiros durante a fase de elaboração de projeto. O Building Information Modeling (BIM) pode auxiliar os gestores no planejamento de segurança e comunicação, antecipando possíveis riscos associados às atividades do canteiro e simulando melhorias no processo. Nesse sentido, o objetivo deste estudo é identificar os riscos envolvidos nas atividades de transporte de formas de alumínio em obras de parede de concreto e propor melhorias, especialmente na fase de projeto, com o auxílio do BIM. A coleta de dados foi desenvolvida em um canteiro de obras do projeto Minha Casa Minha Vida na cidade de Camaçari, Bahia. Os modelos para simulação foram desenvolvidos nos softwares Revit e Navisworks. Como principais resultados do estudo, foram propostas alterações no projeto, que podem reduzir a densidade do fluxo de trabalhadores na movimentação das formas de alumínio, destacando a importância de inserir o planejamento da segurança do trabalho nas primeiras etapas de projeto.