bluuebunny/crossref_metadata_2025 huggingface dataset:
Data in the Time of COVID-19: How Data Library Professionals Helped Combat the Pandemic
Authors: Cooper Alexandra , Hill Elizabeth , Keys Sandra , Steeleworthy Michael , Thompson Kristi
Published: July 2021

As the world struggled to respond to the COVID-19 pandemic, researchers worked around the clock to understand what was going on, medically, socially, and economically. At the same time, usual research processes were disrupted: campuses were closed and normal government data collection and dissemination went haywire. Data professionals in academic libraries sprang into action to help. They shared resources, developed workshops, helped find alternative methods of carrying out research, and found ways of coping with the influx of COVID-related data. Social crises are fought on the front lines by medical professionals and service providers, but they are also fought with research, with information, with data. Libraries are at the nexus of information and communication and library professionals were able to play an important supporting role in helping researchers combat the effects of the pandemic.
Utilización de desinfectantes de manos en niños durante la pandemia de Covid-19 y sus potenciales riesgos para la salud
Authors: Rodríguez-de Ita Julieta , Castorena-Torres Fabiola , Garza-Ornelas Bárbara Mariel
Published: July 2021

No disponible.
Epidemiological study in a vulnerable population
Authors: Silva-Salvador Johana , Viena-Falcón Katheryn
Published: July 2021

Not available.
Demographic and clinical characteristics of patients with Covid-19 in Chihuahua, Mexico
Authors: Contreras-Pacheco Arely Estefania , Saad-Manzanera Maria Isabel , Chavira-Ruíz Juan Manuel , Guerrero-Lara Maria Fernanda , Pérez-Echavarría Ana Irene , Solís-Valdez Jesús , Pérez-Ruiz Manuel David , Torres-Álvarez María Guadalupe , Enríquez-Sánchez Luis Bernardo
Published: July 2021

Not available.
Las repercusiones de la pandemia de Covid-19 en los hábitos de salud y la adaptación a la misma: caso México
Authors: Álvarez-Bermúdez Javier , Meza-Peña Cecilia ,   Grupo de investigación internacional (PSYCOVID) Nodo México
Published: July 2021

No disponible.
Análise do Perfil dos Artigos Científicos sobre Orçamento Empresarial
Authors: Gomes de Souza Karolayne , Dos Santos Geovane Camilo , De Oliveira Elis Regina , Laiana de Jesus Silva Dryelle , De Carvalho Paranaiba Alexandre
Published: July 2021

O orçamento é uma peça que compõem o planejamento empresarial e visa estimar as entradas e saídas de recursos da entidade. Desse modo, este estudo objetiva analisar o perfil dos artigos publicados sobre Orçamento Empresarial publicados nas bases Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Google Acadêmico, Scientific Periodicals Electronic Library (SPELL), Scientific Electronic Library Online (SCIELO), Sciencedirect, e Directory of Open Access Journals (DOAJ), mediante método bibliométrico. Esta pesquisa se classifica como quali-quantitativa, descritiva, documental e bibliométrica. Os dados foram coletados com uso das palavras-chave: “Orçamento Empresarial” e “Business Budget”, e amostra final de 127 artigos. A base mais prolífera é a Sciencedirect, com predominância de estudos internacionais e o periódico Accounting, Organizations and Society possui maior número de publicações. Destaca-se ainda predominância de autores do sexo masculino, com destaque para Carlos Eduardo Facin Lavarda e Fábio Frezatti, que possuem vínculos com FURB e USP, respectivamente.
A Relação entre Governança Corporativa e Teoria da Agência no Gerenciamento de Conflitos
Authors: Hedlund Patrique Rosa , Zaluski Felipe Cavalheiro , Siqueira Carelisa Stoffel de , Silva Patricia Rodrigues da , Brizolla Maria Margarete Baccin , Gomes Clandia Maffini , Mueller Airton Adelar
Published: July 2021

O estudo busca analisar como os mecanismos de Governança Corporativa e a Teoria da Agência podem auxiliar os gestores no gerenciamento de conflitos de modo a minimizar prejuízos a gestão de uma cooperativa médica localizada na região noroeste do Estado do Rio Grande do Sul. Propõem-se um modelo teórico de hipóteses baseadas na literatura que foi analisado e validado com modelagem de equações estruturais PLS-SEM. A coleta de dados baseou-se em survey estruturada com 70 respondentes de diferentes níveis hierárquicos da cooperativa. Os resultados apontam que o desenvolvimento da Governança Corporativa e o entendimento e aplicação da Teoria da Agência influência positivamente o Gerenciamento de conflitos da cooperativa analisada.
A Systematic Review of Enteral Feeding By Nasogastric Tube in Young People With Eating Disorders
Authors: Hindley Kristen , Fenton Clare , McIntosh Jennifer
Published: July 2021

BackgroundAdolescents with severe restrictive eating disorders often require enteral feeding to provide lifesaving treatment. Nasogastric feeding (NG) is a method of enteral nutrition often used in inpatient settings to treat medical instability, to supplement poor oral intake or to increase nutritional intake. This systematic review sets out to describe current practice of NG in young people with eating disorders.MethodsA systematic review following PRISMA guidelines was conducted by searching AMED, EMBASE and MEDLINE databases from 2000–2020. Inclusion terms were: enteral feeding by nasogastric tube, under 18 years, eating disorders, and primary research. Exclusion terms: psychiatric disorders other than eating disorders; non-primary research; no outcomes specific to NG feeding and participants over 18 years. Titles and abstracts were screened by all authors before reviewing full length articles. Quality assessment, including risk of bias, was conducted by all authors.Results29 studies met the full criteria. 86% of studies were deemed high or medium risk of bias due to the type of study: 34.4% retrospective cohort and 10.3% RCT; 17.2% were qualitative. Studies identified 1) a wide range of refeeding regimes depending on country, settings, and the reason for initiation; 2) standard practice is to introduce Nasogastric feeds (NG) if medically unstable or oral intake alone is inadequate; 3) NG may enable greater initial weight gain due to increased caloric intake; 4) there are 3 main types of feeding regime: continuous, nocturnal and bolus; 5) complications included nasal irritation, epistaxis, electrolyte disturbance, distress and tube removal; 6) where NG is routinely implemented to increase total calorie intake, length of stay in hospital may be reduced; however where NG is implemented in correlation to severity of symptoms, it may be increased; 7) both medical and psychiatric wards most commonly report using NG in addition to oral intake.ConclusionsNG feeding is a safe and efficacious method of increasing total calorie intake by either supplementing oral intake or continuously. There are currently no direct comparisons between continuous, nocturnal or bolus regimes, which may be used to direct future treatment for YP with ED.
Walking-adaptability therapy after stroke: results of a randomized controlled trial
Authors: Timmermans Celine , Roerdink Melvyn , Meskers Carel G.M. , Beek Peter J. , Janssen Thomas W.J.
Published: July 2021

BackgroundThe ability to adapt walking to environmental properties and hazards, a prerequisite for safe ambulation, is often impaired in persons after stroke. Research questionThe aim of this study was to compare the efficacy of two walking-adaptability interventions: treadmill-based C-Mill therapy (using gait-dependent augmented reality) and the overground FALLS program (using physical context). We hypothesized better outcomes for C-Mill therapy than the FALLS program due to its expected greater amount of walking practice. MethodsIn this randomized controlled trial, forty persons after stroke (≥3 months ago) with walking and/or balance deficits were randomly allocated to either 5 weeks of C-Mill therapy or the FALLS program. The primary outcome measure was the standard walking speed as determined with the 10 Meter Walking Test (10MWT). Additionally, context-specific walking speed was assessed in environments enriched with either stationary physical context (10MWT context) or suddenly appearing visual images (Interactive Walkway). The walking-adaptability scores of those enriched walking tests served as secondary outcome measures. Furthermore, a cognitive task was added to all three assessments to evaluate dual-task performance. Finally, the participants’ experience and amount of walking practice were scored.Results While both interventions did not show significant improvements in the standard walking speed, they did show significant improvements in context-specific walking speed, walking adaptability and cognitive dual-task performance. C-Mill therapy led to a greater improvement in context-specific walking speed with stationary physical context compared to the FALLS program; however, this improvement was no longer significant at retention. Both interventions were well received, but C-Mill therapy scored better on perceived increased fitness than the FALLS program. Moreover, C-Mill therapy resulted in twice as many steps per session of equal duration than the FALLS program.SignificanceBoth interventions led to long term context-specific improvements in walking speed, walking adaptability and dual-tasking.Trial registration: The Netherlands Trial Register (NTR4030). Registered 11-June 2013, https://www.trialregister.nl/trial/3842
Optimization and Effects of Machining Parameters on Delamination in Drilling of Pure and Al2O3 / SiO2 Added GFRP Composites
Authors: Ünüvar Ali , Koyunbakan Murat , Bağcı Mehmet
Published: July 2021

The present study concentrates on optimization and the effect of machining parameters on delamination that occurs during drilling operation of pure glass fiber reinforced polymer (GFRP) composites and added GFRP composites which were developed for resistance to erosion wear. Contribution of drilling parameters to delamination was investigated by using Taguchi method and Analysis of Variance (ANOVA). Relationship between machining parameters and delamination was modelled by using response surface methodology. Correlations were established between the machining parameters by quadratic regression using response surface methodology (RSM). Delamination factors in the hole entrance and exit were obtained in drilling of pure glass-fiber epoxy, SiO2 and Al2O3 added GFRP materials using the experimental plan. Delamination factors at the hole exits were found bigger than delamination factors at the hole entrances. The smallest delamination values were obtained in GFRP/Epoxy composite compared to Al2O3 / SiO2 added GFRP composites at the hole exit. In the investigation of machinability of composites, considering the material as a variable, it has been determined that the material has a greater effect on delamination than the cutting parameters. A new machinability index defined and the material having the best machinability of the three materials was Al2O3 added GFRP composite at the entrance. Good machinability was obtained in drilling of pure GFRP/epoxy composite at the hole exit. It has been found that the effect of feed rate on delamination is greater than the cutting speed and the cutting speed has a low effect. Optimization of the multi-objective function created for maximizing the material removal rate, minimizing the delamination was performed, and the optimum drilling parameters were obtained. As a result of the experimental study, it was found that the amount of delamination increased although the low mechanical properties added GFRP composites with the high resistance to erosion wear in accordance with pure epoxy GFRP composites due to the lack of a strong bond between the epoxy and the fibers in AL2O3 and SiO2. It was observed that the delamination amounts of pure epoxy GFRP, Al2O3 added GFRP, and SiO2 added GFRP composites increased respectively, while the compressive and tensile strengths of these three materials decreased.
Where is the missing felsic crust of Greater Indian continent?
Authors: Zhang Lifei , Wang Yang , Li Zhong-Hai
Published: July 2021

According to the plate tectonics theory, continental crust (CC), especially the felsic upper and middle continental crust (UCC and MCC), cannot subduct due to its buoyancy. Therefore, most, if not all, of the felsic crustal mass will be preserved in continental collision zones or eroded by the surface process. Consequently, the continent-continent convergence is generally slower and more short-lived than oceanic plate subduction. However, the long-duration, fast convergence, and imbalance of crustal mass in the India-Asia collisional system challenge the classical rules of plate tectonics. Systematic compilation and calculations indicate ~20-47% of the felsic crust in Greater India is missing during collision. Based on the phase equilibria modeling and density calculations, we explore the pressure-temperature-dependent density evolutions of UCC and MCC and demonstrate they are denser than the surrounding mantle at P >7-8 GPa when the phase transition from coesite to stishovite occurs. The phase equilibria induced density evolution is further integrated into the thermo-mechanical model, which confirm the deep subduction of Greater Indian continent with its felsic UCC and MCC. Analytical studies of the slab-pull forces in the subduction zone indicate the Greater Indian continent can subduct spontaneously under its own negative buoyancy when it is dragged to a depth of ~170 km by the preceding oceanic slab. The great slab-pull force, induced by the negative buoyancy of UCC and MCC below 170 km, not only contributes to the long-lasting fast convergence between India and Asia, but also explains the crustal mass imbalance during the Himalayan orogeny.
Negative assortative mating and maintenance of shell colour polymorphism in Littorina (Neritrema) species
Authors: Gefaell Juan , Galindo Juan , Malvido Christian , Nuñez Victor , Estévez Daniel , Blanco Sofía , González-Conde Miriam , Martínez-Domínguez Sergio , Novo Irene , Pérez-Fernández G. Gonzalo , Rus Ana , Mosconi Inés , Rolán-Alvarez Emilio
Published: July 2021

Colour polymorphism is a widespread phenomenon in natural populations of several species. In particular, it is especially common on marine gastropod species from the genus Littorina. Recently, it has been argued that intrapopulation shell colour polymorphism in Littorina fabalis could be caused by negative frequency-dependent sexual selection via a mechanism of mate choice (indirectly estimated via negative assortative mating). Here we try to determine the existence of negative assortative mating in three species of the subgenus Neritrema (L. fabalis, L. obtusata, L. saxatilis) that share a similar shell colour polymorphism, in order to ascertain if this mechanism could represent an ancestral character in this subgenus that could be contributing to the maintenance of the colour polymorphism in each species. Here, we collected or reanalysed from previous studies a sample of mating pairs of the three species from seven locations from NW Spain and NE Russia and estimated assortative mating using the IPSI index. Our results show that all species and populations show a systematic tendency towards negative assortative mating when shell colour is grouped in the broad categories: ‘light’ and ‘dark’. Although, a more detailed analysis of each colour individually suggests that shell colour may not be the main target of assortative mating, but perhaps physically linked to another trait or through pleiotropic effects. This hypothesis opens interesting new lines of research in Littorina snails.
Flow Behavior and Microstructure Evolution of Ti-6Al-4V Titanium Alloy Produced by Selective Laser Melting Compared to Wrought
Authors: Salikhyanov Denis R , Veselova Valeriya E , Volkov Vladimir P
Published: July 2021

Nowadays, selective laser melting (SLM) represents an option for manufacturing parts from titanium alloys, especially from Ti-6Al-4V alloy. However, mechanical properties of parts made of Ti-6Al-4V such as ductility and fatigue resistance are significantly lower than that for conventional manufactured parts. One of the promising ways to improve mechanical properties of SLM parts can be the use of deformation post-processing, for example, combining SLM with subsequent die forging. Therefore, the aim of the present study is to investigate the rheological properties and microstructure evolution of Ti-6Al-4V titanium alloy fabricated by SLM under temperatures of cold and hot deformation. The tests of cylindrical samples made of Ti-6Al-4V alloy was performed using a plastometer in the temperature range of 20–1200 °C, at strain rate ξ of 1 s− 1 up to strain e of 0.85. To evaluate the effect of manufacturing method of samples on flow behaviour and microstructure evolution of the material, the samples made of Ti-6Al-4V alloy fabricated by conventional technology were tested under the same conditions. The differences in the flow behaviour of SLM and conventional manufactured samples from Ti-6Al-4V which were significant at test temperatures of 20–900 °С were analysed and explained. In contrast to conventional manufactured parts, SLM-produced Ti-6Al-4V reveal higher peak stresses in the flow curves and temperature sensitivity of flow stresses. This in turn leads to high inhomogeneity of deformation of SLM-produced parts.
QoTa-MPR: QoS-oriented and Traffic-aware Multi-path Routing Protocol for Internet of Remote Things
Authors: MA Zhongyu , Liu Yanxing , Guo Qun , Dang Xiaochao , Hao Zhanjun , Tian Ran
Published: July 2021

Internet of Remote Things (IoRT) is widely used in both military and civilian applications. However, due to the unique characteristics, which is characterized as long-distance and high-latency, the design of the routing protocol is a great challenge of IoRT. In this paper, a QoS-oriented and traffic-aware multi-path routing protocol (QoTa-MRP) is proposed for IoRT. QoTa-MRP is composed of two parts. The first part is the link traffic-aware based multi-paths source route discovery mechanism, which is used to establish multi-paths with lower link disjoint degree. The second part is path similarity and traffic priority based multi-path selection mechanism, which is used to determine the transmission mode of the traffic flows to enhance the reliability or effectiveness of the transmission. Simultaneously, the protocol is theoretically analyzed in terms of the successful transmission rate of routing transmission data packet. Finally, the dynamic source routing, which is a very representative protocol and is usually used as the baseline comparison protocol, is revisited for the performance verification of the QoTa-MRP in IoRT. It is shown in the simulation results that there are significant superiorities of QoTa-MRP than that of DSR in terms of network throughput, packet loss rate and routing packet header overhead in IoRT.
Investigating green roofs’ CO2 sequestration with cold- and drought-tolerant plants (A short- and long-term carbon footprint view)
Authors: Seyedabadi Mohammad Reza , Karrabi Mohsen , Nabati Jafar
Published: July 2021

In recent years, green roofs have become the subject of increasing interest because of their good aesthetic qualities, energy conservation, and ability to reduce thermal island effect and absorb greenhouse gases, especially carbon dioxide (CO2). Given the typically significant carbon emission of construction activities, adding any extra component to a structure increases the amount of carbon to be released during the execution stage. This also applies to green roofs, which require more materials and more extensive construction activities than traditional roofs. However, plants of green roofs absorb substantial amounts of CO2 during their lifetime, thus leaving both short- and long-term positive impacts on the building’s carbon footprint. This study investigated the short- and long-term effects of green roofs on carbon footprint, as compared to conventional roofs. For this investigation, the CO2 uptake of eight plant species with suitable drought- and cold-resistant properties was measured by Infrared Gas Analysis (IRGA) and the effect of green roof on the building’s carbon footprint was analyzed using the software Design Builder. The results showed that building a green roof instead of a traditional roof increases the carbon emission of the construction process by 4.6 kilograms per square meter of roof area. Investigations showed that, under high light intensities (1500–2000 µmol/m2.s), Sedum acre L has the best performance in compensating the extra carbon emission imposed on the construction process (in 264 days only). Under low light intensities (1000–1500 µmol/m2.s), Frankenia laevis showed the best increase in the amount of carbon uptake (2.27 kg/m2.year).
Comparison of Fear of COVID-19 in Medical and Nonmedical Personnel in a Public Hospital in Mexico: A Brief Report.
Authors: Barbosa-Camacho Francisco José , García-Reyna Benjamín , Cervantes-Cardona Guillermo Alonso , Cervantes-Pérez Enrique , Chavarria-Avila Efraín , Pintor-Belmontes Kevin Josue , Guzmán-Ramírez Bertha Georgina , Bernal-Hernández Aldo , Ibarrola-Peña Juan Carlos , Fuentes-Orozco Clotilde , González-Ojeda Alejandro , Cervantes-Guevara Gabino
Published: July 2021

The world is social distancing and compulsory confinement has caused stress, psychological instability, stigmatization, fear, and discrimination in the general population. In this cross-sectional survey study, we administered the Fear of COVID-19 Scale (FCV-19S) to hospital medical and nonmedical personnel. A total of 1,216 participants were surveyed from May 25 to May 29 of 2020. We asked all the staff for their participation in the study and physical copies of the survey were distributed to the staff willing to participate. All surveys were answered anonymously. We found that the global FCV-19S mean score was 16.4 ± 6.1, with a significant difference between women and men’s scores. Medical students presented higher scores than experienced medical personnel. Additionally, the medical and nursing personnel presented a higher level of fear than hospital staff who did not work directly with COVID-19 patients. Our findings suggest that greater knowledge of medicine or infectious diseases could decrease the overall psychological impact of the pandemic disease.
On Fuzzy Contractive Mappings in Fuzzy Metric Spaces
Authors: Rashid Mohammad Hussein Mohammad
Published: July 2021

In this paper we introduce a new fuzzy contraction mapping and prove that such mappings have fixed point in $\tau$-complete fuzzy metric spaces. As an application, we shall utilize the results obtained to show the existence and uniqueness of random solution for the following random linear random operator equation. Moreover, we shall show that the existence and uniqueness of the solutions for nonlinear Volterra integral equations on a kind of particular fuzzy metric space.
The Effectiveness of Low-Investment Pachinko/Pachislot in Reducing Gambling-Related Harms: A Cross Sectional Study
Authors: Yokomitsu Kengo , Inoue Kazuya , Irie Tomonari
Published: July 2021

BackgroundPachinko and pachislot are popular types of gambling activities in Japan. Prior studies in Japan have reported a concerning prevalence of problem gambling among adult players. While these studies have identified various gambling-related harms, Japanese research on harm-minimization strategies is scarce. Therefore, the present study aimed to analyze the effectiveness of low-investment pachinko and pachislot as a harm-reduction strategy. MethodsWe considered gamblers who played games that cost the typical amount of money to be “normal-pachi players.” Those who played low-investment games were categorized as “half-pachi players” and “quarter-pachi players,” reflecting those who played games at half or one quarter the cost of a typical machine, respectively. To assess the harm-reduction effect, a one-way ANCOVA was conducted to compare the impact of the groups (normal-pachi players [n= 101], half-pachi players [n= 104], and quarter-pachi players [n= 100]) on dependent variables, namely the number of days players had gambled during the prior month; total time and amount of money spent on gambling; debts caused by gambling; gambling severity; cognitive distortion; depressive symptoms; and problems in work, family, and social life. ResultsWe demonstrated that the amount of money spent by quarter-pachi players on gambling during the past month was lower than that of normal-pachi players. However, we did not find significant differences with respect to any other gambling-related harms among normal-, half-, and quarter-pachi players. ConclusionLow-investment pachinko and pachislot can reduce the amount of money spent on gambling. It can thus partly act as a harm-minimization strategy. Moreover, the results of the present study indicate that the problems at work affect various outcomes for gamblers. Given that 90% of the participants in this study were employed, the results of this study may have important implications for employed gamblers.
Assessing The Macroeconomic Effects Of Water Scarcity In South Africa Using A Water-CGE Model
Authors: Briand Anne , Reynaud Arnaud , Viroleau Franck , Markantonis Vasileos , Branciforti Giuliana
Published: July 2021

We develop a dynamic computable general equilibrium (CGE) model to assess the macroeconomic impacts of water scarcity and water (in)security in South Africa. The water-CGE model which includes a detailed representation of water flows (surface water, groundwater, wastewater, and seawater) has been calibrated with an updated social accounting matrix enabling to conduct policy simulations up to 2030. We show that water scarcity will have an impact on the South African economy. With an increase of water scarcity by 17%, the CGE model predicts a decrease of South African GDP by -0.34% in 2030. The long-term impact of water scarcity varies from one sector to another, with the most negatively impacted sectors being those related to water (loss of GDP up to -2.48%). Due to the increase of water scarcity, the unemployment rate is expected to be 0.1% higher in 2020 which represents a loss of 18,000 jobs compared to the baseline year (2013). The 17% increase in water scarcity is also expected to have a negative impact on household welfare: by 2030, household consumption may decrease by -0.26%. Some policies can mitigate the negative impacts of water scarcity, the most promising one being to promote water saving.
Pseudo-Bartter Syndrome as an Atypical Presentation of Intestinal Malrotation: A Case Report
Authors: Aydin Orkun , Ardicli Burak , Kesici Selman
Published: July 2021

Intestinal malrotation is a congenital intestinal rotation anomaly and can present with various symptoms. Electrolyte disorders are very common in childhood. Pseudo-Bartter syndrome (PBS) is one of the conditions that causes electrolyte disorders and can be seen due to intestinal malrotation in children.A 3.5-month-old boy who was diagnosed as having malrotation is reported. The patient had PBS because of non-bilious vomiting. We could find only two reports on PBS related to malrotation. It is emphasized that intestinal malrotation should be considered in patients presenting with gastrointestinal symptoms such as vomiting, abdominal pain, and also PBS.
A Novel Dual-Band Conformal Surface Plasmons Waveguide With Tunable Frequency Response In Large-scale
Authors: Fang Yijiao , Zhong Jiangwei
Published: July 2021

A novel dual-band conformal surface plasmons (CSPs) waveguide is designed and well studied in this paper. In earlier researches, we have recognized that electromagnetic field of CSPs waveguide are always confined to a sub-wavelength area and have a strong potential to be applied in devices designing. However, almost all of the earlier CSP structures is mainly focus on the fundamental mode characteristics with only single resonance frequency. Here we propose a innovative dual inverted-L structure with excellent performance not only on the fundamental mode but also on a new upper mode. This structure operates in microwave frequencies regime and shows outstanding frequency tunability characteristic. Being different from frequency characteristics in the earlier CSP waveguides which always used to be designed single-frequency device, dual-frequency tunability can be obtained via the dual L-type bending branch of the periodical CSP structure. In present paper, we also realize a tunable dual-frequency filter by changing the scaling factor of inverted-L stubs.
Adapted Convolutional Neural Networks and Long Short-Term Memory for Host Utilization prediction in Cloud Data Center
Authors: ullah ARIF , Abbasi Irshad Ahmed , Rehman Muhammad Zubair , Alam Tanweer , Aznaoui Hanane
Published: July 2021

Infrastructure service model provides different kinds of virtual computing resources such as networking, storage service, and hardware as per user demands. Host load prediction is an important element in cloud computing for improvement in the resource allocation systems. Hosting initialization issues still exist in cloud computing due to this problem hardware resource allocation takes serval minutes of delay in the response process. To solve this issue prediction techniques are used for proper prediction in the cloud data center to dynamically scale the cloud in order for maintaining a high quality of services. Therefore in this paper, we propose a hybrid convolutional neural network long with short-term memory model for host prediction. In the proposed hybrid model, vector auto regression method is firstly used to input the data for analysis which filters the linear interdependencies among the multivariate data. Then the enduring data are computed and entered into the convolutional neural network layer that extracts complex features for each central processing unit and virtual machine usage components after that long short-term memory is used which is suitable for modeling temporal information of irregular trends in time series components. In all process, the main contribution is that we used scaled polynomial constant unit activation function which is most suitable for this kind of model. Due to the higher inconsistency in data center, accurate prediction is important in cloud systems. For this reason in this paper two real-world load traces were used to evaluate the performance. One is the load trace in the Google data center, while the other is in the traditional distributed system. The experiment results show that our proposed method achieves state-of-the-art performance with higher accuracy in both datasets as compared with ARIMA-LSTM, VAR-GRU, VAR-MLP, and CNN models.
Localized Heat Treatment to Improve the Formability of Steel Pipes for Hydraulic Applications: Process Design and Mechanical Characterization
Authors: Bruno Luigi , Canto Santo , Luciani Luciano
Published: July 2021

In the present work, authors have demonstrated how a localized induction heat treatment can be advantageously applied, controlled and mechanically characterized on a specific part – i.e. on steel hose fittings for hydraulic applications. More specifically, the study shows how this specific type of heat treatment facilitates the acquisition of significant localization effects on mechanical properties, and how such a treatment could act as a powerful tool for material optimization in diverse applications. The instrumented micro-indentation test was adopted as the investigation method for mechanical characterization and, due to the reduced amount of material required for the test, has the double advantage of retrieving potential spatial gradients of the mechanical properties without causing permanent damage to the entirety of analyzed parts. The measurement of both the Vickers hardness and plastic work required to make the indentation that would be necessary to quantify the strength and ductility capability of the parts’ material. In addition, a customized tensile test, based on the strains measurement obtained through an optical full-field method – i.e. Digital Image Correlation (DIC) – was developed with the aim of identifying and quantifying the correlation between the material properties attainable through a conventional tensile test and those measured by the instrumented micro-indentation test. Finally, it was demonstrated that the proposed customized tensile test, due to the localized heat treatment, is capable of retrieving potential spatial gradients of material properties.
Lycopene Treatment Ameliorates Amyloid Plaque Deposition and Memory Impairment in the APP/PS1 Mice
Authors: Ou Shanshan , Fang Yinchao , Wu Tong , Xu Jie , Guo Kaihua
Published: July 2021

Alzheimer’s disease (AD) is a neurodegenerative condition associated with oxidative stress and neuroinflammation. Lycopene has previously been shown to ameliorate neuroinflammation and exert protection against oxidative damage in neuroblastoma cells. The role of this compound in reversing cognitive dysfunction in AD has yet to be determined. The present study investigates the role of lycopene in AD with an in vitro Aβ1-42-induced cell cytotoxicity model as well as the in vivo APP/PS1 mouse model. The activation of Nrf2 signal pathway was assessed using western blot and RT-PCR. MDA, 8-OHdG, ROS, SOD, GHS and GSSG measurements were carried out using the specialized assay kits. The Morris water maze was used to examine qualitative assessment of memory and spatial learning. Immunofluorescence was used to visualize astrocytes and microglia activation as well as brain β-amyloid (Aβ) deposition. The NeuN positive cells were detected by immunofluorescence and western blot. Levels of cerebral cytokines were quantified using RT-PCR. Lycopene ameliorates oxidative damage in the Aβ1-42-triggered cell cytotoxicity model via Nrf2-ARE signal pathway activation, which is regulated by AKT-GSK3β pathway. In addition, lycopene improves the cognitive impairment and reduces the Aβ deposition. Mechanistically, lycopene attenuates neuron loss, decreases chronic inflammation and activates cerebral Nrf2-ARE signaling pathway in APP/PS1 mice. The results suggest that lycopene alleviates oxidative stress via AKT- Nrf2-ARE pathway. And early administration of lycopene improves cognitive deficits by reducing Aβ deposition, neuronal loss and decreasing the degree of chronic inflammation.
Spatial-temporal Attention Fusion for Traffic Speed Prediction
Authors: Zhang Anqin , Liu Qizheng , Zhang Ting
Published: July 2021

Accurate vehicle speed prediction is of great significance to the urban traffic intelligent control system. However, in terms of traffic speed prediction, the modules that integrate temporal and spatial features in the existing traffic speed prediction methods are effective in short-term prediction, but the medium-term or long-term prediction errors are relatively large. Aiming at this limitation, this paper proposes a traffic speed prediction method that combines attention and Spatial-temporal features, referred to as ASTCN. Specifically, unlike previous methods, ASTCN can use the temporal attention convolutional network (ATCN) to separately extract temporal features from the traffic speed features collected by each sensor, and use the spatial attention mechanism to extract spatial features and then perform spatial-temporal feature fusion. Experiments on three real-world datasets show that the proposed ASTCN model outperforms the state-of-the-art baselines.
Impact of the ACOSOG Z0011 Trial on Surgical Practice in Asian Patients: Comparison of Trends in Axillary Surgery for Breast Cancer Between Korean and Dutch Cohorts
Authors: CHA CHIHWAN , Kim Eun Young , Kim Sung Yong , Ryu Jai Min , Park Min Ho , Lee Seokwon , Suh Young-jin , Choi Nayeon , Hong Hanpyo , Kim Hyung Suk Kim , Chung Min Sung
Published: July 2021

PurposeSince the publication of the Z0011 trial, practice-changing clinical guidelines for breast surgery have been developed. Although recent studies confirmed the feasibility of the Z0011 strategy in Asian populations, there has been no study on the trends of axillary surgery in Asian cohort. This study aimed to investigate the time trend of axillary surgery for breast cancer in Korea and compare it with that in Dutch cohort to understand the impact of the Z0011 trial.MethodsWe collected prospectively constructed data from the nationwide Korean Breast Cancer Registry (KBCR). We identified patients who underwent sentinel node biopsy followed by breast-conserving surgery from 2011 to 2018 and were found to have pathological stage T1-2N1-3M0 disease. Regression analyses were performed to compare the downward trend of axillary lymph node dissection (ALND) in our cohort with that previously reported in a Dutch cohort.Results From KBCR data, 7,478 patients met the inclusion criteria. The proportion of ALND significantly decreased from 2011 (76.6%) to 2018 (47.5%). Multivariate analysis revealed that earlier year at diagnosis, larger tumor size, and lymphatic invasion were associated with a higher odds ratio of performing ALND. Compared to Dutch cohort, the downward trend of ALND in Korea was significantly more gradual (annual percent change: 30.1% vs. 5.8%, P < 0.001).ConclusionsThis study demonstrated a downward trend of ALND in Korean patients with breast cancer. However, the rate of decrease was significantly slower than that in Dutch cohort, indicating the need to spread the Z0011 strategy in Asia.
Quality Prediction of Resistance Spot Welding Joints From Pre- and Post-Welding Inputs Using Stacking of Tree Ensemble Models
Authors: Martín Óscar , Ahedo Virginia , Santos José Ignacio , Galán José Manuel
Published: July 2021

Resistance spot welding (RSW) is a widespread manufacturing process in the automotive industry. There are different approaches for assessing the quality level of RSW joints. Multi-input-single-output methods, which take as inputs either the intrinsic parameters of the welding process or ultrasonic nondestructive testing variables, are commonly used. This work demonstrates that the combined use of both types of inputs can significantly improve the already competitive approach based exclusively on ultrasonic analyses. The use of stacking of tree ensemble models as classifiers dominates the classification results in terms of accuracy, F-measure and area under the receiver operating characteristic curve metrics. Through variable importance analyses, the results show that although the welding process parameters are less relevant than the ultrasonic testing variables, some of the former provide marginal information not fully captured by the latter.
A Bone-Targeting Enoxacin Delivery System to Eradicate Staphylococcus Aureus-Related Implantation Infections and Bone Loss
Authors: Yao Cong , Xu Qiang , Han Xiuguo , Tao Qianyuan , Luo Xuwen , Li Feilong , Wang Fuqiang , Gu Zhiping , Xu Huaen , Zhang Bin , Dai Min , Nie Tao , Liu Xuqiang
Published: July 2021

Post-operative infections in orthopaedic implants are severe complications that require urgent solutions. Although conventional antibiotics limit bacterial biofilms formation, they ignore the bone loss caused by osteoclast formation during post-operative orthopaedic implant-related infections. Fortunately, enoxacin exerts dual antibacterial and osteoclast inhibitory effects, playing a pivot in limiting infection and preventing bone loss. However, enoxacin lacks specificity in bone tissue and low bioavailability-relate side effects, which hinders translational practice. Herein, we developed a nanosystem (Eno@MSN-D) based on enoxacin (Eno)-loaded mesoporous silica nanoparticles (MSN), decorated with the eight repeating sequences of aspartate (D-Asp8), and coated with polyethylene glycol (PEG). This Eno@MSN-D delivery nanosystem exhibited both antibacterial and anti-osteoclast properties in vitro. More importantly, Eno@MSN-D allowed the targeted release of enoxacin in infected bone tissues and prevented implant-related infection and bone loss in vivo. Therefore, our work highlights the significance of novel biomaterials that offer new alternatives to treat and prevent orthopaedic staphylococcus aureus-related implantation infections and bone loss.
Cardiovascular profile of crab-eating foxes (Cerdocyon thous) in captivity anesthetized with ketamine and midazolam
Authors: Ribeiro Victor Ramon de Franca , Ramos Ariana , Alfonso Angélica , Hippolito Alicia , Coppini Heloisa , Codognoto Viviane , Silva Diogo , Tsunemi Miriam , Neto Moacir Leomil , Melchert Alessandra , Okamoto Priscylla , Machado Luiz Henrique , Lourenço Maria
Published: July 2021

The cardiac evaluation of wild animals is still a wide and largely unknown field for several species. Therefore, through complimentary examinations such as radiography, echocardiography and serum troponin levels, this study aimed at describing the values observed in 12 crab-eating foxes (Cerdocyon thous) anesthetized with a combination of intramuscular ketamine and midazolam. Through the use of this chemical restraint, a clinical, radiographic and echocardiographic (linear and indexed values in M-mode) evaluation of the 12 male specimens included in the sample group. Among the findings observed in comparison with domesticated dogs were a decrease in the dimensions of the septum, wall and cavity of the left ventricle, as well as a deceleration in the E wave (EDT), which could be correlated with the maintenance of the serum troponin dosage values (cTnI). Therefore, M-mode echocardiography has proven to be safer and comparative to other species of wild canids when performed through indexed values. In addition, when evaluating the systolic function and segmentary contractions, the anesthetic combination did not have any effects on the results of complementary examinations performed in crab-eating foxes (Cerdocyon thous) included in this study.
Influence of Age and Sex on the Blood Biochemical Constituent Values of Broiler Breeders During the Egg-Laying Stage
Authors: Rezende Marcelo Sebastião , FONSECA BELCHIOLINA BEATRIZ , Braga Paula Fernanda Sousa , Guimarães Ednaldo Carvalho , Mundim Antonio Vicente
Published: July 2021

This study aimed to evaluate the influence of age and sex on the blood biochemical constituents of broiler breeders during the egg production stage. The analysis was performed in an industrial broiler breeder farm, and blood samples were collected from males and females at five different ages. At most ages, females had higher values of total proteins, albumin, globulins, triglycerides, cholesterol, glucose, calcium, phosphorus, Ca/P (calcium and phosphorus)ratio and gamma-glutamyltransferase (GGT). The values of uric acid, aspartate aminotransferase (AST), creatine kinase (CK), and alkaline phosphatase (PAL) were higher in males. The lowest protein values were found at 28 and 60 weeks old. The mean albumin values were significantly higher at 44 and 52 weeks old in males and females. A trend of increasing globulin values ​​with increasing age up to 52 weeks old was observed. Although calcium and phosphorus did not vary according to age, the Ca/P ratio was lowest at 36 weeks old. Comparing the means of both sexes, the AST and GGT values were significantly higher in 60-week-old birds. The highest serum levels of CK occurred at 28 and 52 weeks old. The physiological levels of serum biomarkers presented in this work are important for evaluating productivity performance, welfare, and disease indication in breeding flocks.
Evaluation of Electrocardiography, Echocardiography and Cardiac T2* for Cardiac Complications in Beta Thalassemia Major
Authors: DURSUN Fadime ERSOY , Aciksari Gonul , Ozkok Sercin , Incealtin Onur
Published: July 2021

Cardiac complications such as heart failure and arrhythmias caused by "iron-induced" cardiomyopathy are considered as the primary cause of death in the patients with β-thalassemia major. The aim of this study was to evaluate electrocardiography, echocardiography according cardiac T2* and ferritin findings of patients followed-up for β-thalassemia major, and to investigate the importance of these findings for early detection of cardiac complications. The study included 41 patients and 25 healthy individuals with matched age and gender. The cardiac T2* results revealed a cardiac iron load below 20 msec in 12 (29.27%) patients, and above 20 msec in 29 (70.73%) patients. All electrocardiography parameters except JTc interval significantly increased in the patient group when compared to the control group (p < 0.05). All parameters except P wave segment in electrocardiography and T peak-end/QT ratio were significantly higher in the group with cardiac T2* <20 msec than the group with cardiac T2* >20 msec (p < 0.05). Intraventricular septum thickness, left ventricular posterior wall thickness, left ventricular mass and left ventricular mass index detected by echocardiography were significantly higher in the group with T2* <20 msec (p < 0.05). Electrocardiography, echocardiography, cardiac T2* and ferritin findings should be carefully evaluated in these patients in order to detect early signs of cardiac complications.
Association Among Sentinel Surveillance, Meteorological Factors, and Infectious Disease in Gwangju, Korea
Authors: Joung You Hyun , Jang Taesu , Kim Jae Kyung
Published: July 2021

Introduction:
The outbreak of new infectious diseases is threatening human survival. Transmission of such diseases is determined by several factors, with climate being a very important factor. This study was conducted to assess the correlation between the occurrence of infectious diseases and climatic factors using data from the Sentinel Surveillance System and meteorological data from Gwangju, Jeollanam-do, Republic of Korea.
Result
The climate of Gwangju from June to September is humid, with this city having the highest average temperature, whereas that from December to February is cold and dry. Infection rates of Salmonella (Temperature: r = 0.710**; Relative humidity: r = 0.669**), E. coli (r = 0.617**; r = 0.626**), Rotavirus (r=-0.408**; r=-0.618**), Norovirus (r=-0.463**; r=-0.316**), Influenza virus (r=-0.726**; r=-0.672**), Coronavirus (r=-0.684**; r=-0.408**), and Coxsackievirus (r = 0.654**; r = 0.548**) have been shown to have a high correlation with seasonal changes, specifically in these meteorological factors.
Discussion & Conclusions:
Pathogens showing distinct seasonality in the occurrence of infection were observed, and there was a high correlation with the climate characteristics of Gwangju. In particular, viral diseases show strong seasonality, and further research on this matter is needed. Due to the current COVID-19 pandemic, quarantine and prevention have become important to block the spread of infectious diseases. For this purpose, studies that predicts infectivity through various types of data related to infection are important.
Pd@Py2PZ@MSN as a Novel and Efficient Catalyst for C-C Bond Formation Reactions
Authors: Sayahi Mohammad Hossein , Toosibashi Mansoureh , Bahmaei Mehdi , Lijan Hosein , Maˈmani Leila , Mahdavi Mohammad , Bahadorikhalili Saeed
Published: July 2021

In this paper, a novel catalyst is introduced based on the immobilization of palladium onto dipyrido[3,2-a:2',3'-c]phenazine modified mesoporous silica nanoparticles. Dipyrido[3,2-a:2',3'-c]phenazine (Py2PZ) ligand is synthesized in a simple method from the reaction of 1,10-phenanthroline-5,6-dione and 3,4-diaminobenzoic acid as starting materials. The ligand is used to functionalize mesoporous silica nanoparticles (MSN) and to modify its surface chemistry for immobilization of palladium. The palladium immobilized dipyrido[3,2-a:2',3'-c]phenazine modified mesoporous silica nanoparticles (Pd@Py2PZ@MSN) are synthesized and characterized by several characterization techniques, including TEM, SEM, FTIR, TGA, ICP, XRD, and EDS analysis. After the careful characterization of Pd@Py2PZ@MSN, the activity and efficiency of this catalyst is examined in carbon-carbon bond formation reactions. The results are advantageous in water and the products are obtained in high isolated yields. In addition, the catalyst shows very good reusability and did not show significant loss in activity after 10 sequential runs.