bluuebunny/crossref_metadata_2025 huggingface dataset:
Simulation of Low Carbon Layout Optimization of Disassembly Line Based on SLP Method
Authors: Mao Jia , Cheng Jinyuan , Li Xiangyu , Zhao Honggang , Yu Dexin
Published: March 2023

New concepts such as low-carbon economy, low-carbon production, low-carbon living and even low-carbon cities have become popular topics in environmental protection. The disassembly line part of reverse logistics is accompanied by high carbon emission, which is contrary to the original intention of sustainable development. In this paper, we design a systematic low-carbon layout for the disassembly line of the logistics processing center to address the problem of high carbon emissions caused by the unreasonable layout of the disassembly line. Taking the disassembly line in the logistics center of Company H as the research object, the process of the disassembly line is analyzed, and the SLP analysis method is applied to analyze the material flow and the material flow intensity level of the disassembly line layout, and three different optimization schemes are derived. Flexsim software was used to model and run the three initial layout schemes of the disassembly line, and the data related to the waiting time operation of each scheme were obtained. Finally, carbon emission and other disassembly-line-related indicators were introduced and weights were set, and the results were subjected to weighted gray correlation analysis to arrive at the optimal disassembly line layout optimization scheme. This study will provide reference for other reverse logistics processing center layout studies.
Stability Analysis of Tunnel Surrounding Rock When TBM Passes through Fracture Zones with Different Deterioration Levels and Dip Angles
Authors: Ji Mingtao , Wang Xuchun , Luo Minhe , Wang Ding , Teng Hongwei , Du Mingqing
Published: March 2023

In fracture zones, tunneling with a double-shield Tunnel Boring Machine (TBM) presents significant challenges, including deformation overrun of the surrounding rock, TBM jamming, and excavation face collapse. To assure the tunnel construction safety and efficiency, it is necessary and crucial to conduct a stability analysis of the tunnel surrounding rock when a TBM passes through the fracture zones. The tunnels from Jiadingshan Road Station to Anshan Road Station in Qingdao Metro Line 8 are constructed by double-shield TBMs. It inevitably passes through fracture zones with different deterioration levels and dip angles. In this study, based on this construction section, numerical models of fracture zones with different deterioration levels and dip angles were developed to analyze the displacements of tunnel vaults, inverts, and haunches. In addition, the maximum shear stresses of the surrounding rock were analyzed. Finally, the displacement and shear stress variation patterns of the surrounding rock with different deterioration levels and dip angles were obtained. The findings reveal the stability behavior of tunnels under various fracture zones. They can serve as a valuable reference and theoretical foundation for future tunnel construction projects utilizing double-shield TBMs in areas with fracture zones.
Optimal Pricing Strategy of New Products and Remanufactured Products Considering Consumers’ Switching Purchase Behavior
Authors: Li Hao , Xiao Qing , Peng Ting
Published: March 2023

Due to income constraints, increased awareness of environmental protection and preference for new products, consumers generate switching purchases between new and remanufactured products, which often lead to a “cannibalization effect” in the market, and make sellers fall into a vicious circle of price reduction. Considering consumers’ switching purchase behavior, this study examines the pricing problem of new products and remanufactured products in the competitive market environment. Based on two-period duopoly asymmetric price game models, there has been less research on the effectiveness of the price matching strategy and the traditional dynamic pricing strategy, which is the issue that this paper is dedicated to discussing. This study analyzes the equilibrium profits and their influencing factors under the dynamic pricing and price matching strategies of sellers, and discusses the simplified solution of the model. The results show that consumer learning costs, initial consumers and product differences can affect the sellers’ pricing decisions. Consumers’ learning costs of products reduces the equilibrium profit of the manufacturer and increases that of the remanufacturer. Initial consumers are not always advantageous for sellers’ profitability. Product differences affect the determination of the seller’s equilibrium strategy. In the optimal strategy, the remanufacturer should insist on price matching, while the manufacturer should choose dynamic pricing or price matching according to the product differences. This study provides sellers with insights to choose appropriate and custom pricing strategies to maximize profit as well as prevent the majority of consumers switching purchase.
Modeling the Cause-and-Effect Relationships between the Causes of Damage and External Indicators of RC Elements Using ML Tools
Authors: Trach Roman , Ryzhakova Galyna , Trach Yuliia , Shpakov Andrii , Tyvoniuk Volodymyr
Published: March 2023

Reinforced concrete (RC) structures are used in a wide range of applications, including high-rise buildings, nuclear power plants, oil and gas platforms, bridges, and other infrastructure. However, over time, RC structures can be subject to deterioration and damage, particularly from exposure to weather and environmental conditions, heavy traffic loads, and other factors. Regular inspections, diagnosing the condition, maintenance, and repair can help to mitigate the effects of degradation and extend the life of the structure. The task of this study was to determine the possible causes of the defects of the RC elements based on the identification of external indicators using the ML tools. This study created and compared the performance of four ML models, namely, Support Vector Regression (SVR), decision trees (DTs), random forest (RF), and Artificial Neural Networks (ANNs). The first comparison showed a rather low performance of all models, with a slight advantage of the ANN model. Later, six ANN models were optimized to obtain a higher level of performance. The next step of this study was the training, validation, and testing of ANN models. Analysis of MAPE and R2 metrics showed that the ANN model with an Adaptative Moment (ADAM) loss function and sigmoid activation had the best results (MAPE 3.38%; R2 0.969). The novelty of the study consisted of the development of the ML model, which is based on the use of ANNs, and allows for the establishment of cause-and-effect relationships in the diagnosis of the technical condition of the RC elements. The advantage of using ANN to solve this problem is the possibility to obtain a forecast in the form of continuous values. Moreover, the model can be used further without retraining, and it can make predictions on datasets it has not yet “seen”. The practical use of such a model will allow for the diagnosis of some causes of defects during a visual inspection of structures.
Comparing the Carbon Footprint of Conventional and Organic Vineyards in Northern Italy
Authors: Ghiglieno Isabella , Simonetto Anna , Facciano Luca , Tonni Marco , Donna Pierluigi , Valenti Leonardo , Gilioli Gianni
Published: March 2023

The carbon footprint is an index used to assess the impact of an activity in terms of greenhouse gas emissions. Viticulture contributes to greenhouse gas emissions due to the use of fuels, fertilizers and pesticides, and the consequent soil erosion. Organic viticulture differs from conventional viticulture, mainly because of the absence of synthetic products, the soil tillage, and the level of organic carbon in the soil. The purpose of the study was to determine the actual differences between conventional and organic vineyard management in terms of greenhouse gas emissions, comparing multiannual data from 25 wineries in northern Italy. No statistically significant differences were found between the overall mean values of conventional and organic management. In organically farmed vineyards, a higher incidence of fuel consumption was observed, while in conventionally farmed vineyards higher emissions were observed, due to the use of such products as pesticides and fertilizers. No differences were found between the two management systems in terms of emissions resulting from direct fertilizing. Further assessment of the potential sequestration of organic fertilizer would be necessary.
Analysis of the Nonlinear and Spatial Spillover Effects of the Digital Economy on Carbon Emissions in the Yellow River Basin
Authors: Dong Ruiyuan , Zhou Xiaowei
Published: March 2023

Low-carbon development of the Yellow River Basin (YRB) is an inherent requirement for implementing ecological protection and high-quality development strategies in the YRB and an important way to achieve China’s carbon peak and neutrality goals. However, utilization of the newly emerging digital economy to reduce carbon emissions in the YRB remains a largely unexplored topic. Based on panel data obtained from 56 cities in the YRB from 2011 to 2019, the nonlinear and spatial spillover effects of the digital economy on carbon emissions were studied using spatial econometric and multiple threshold effect models. The results showed that: (1) The digital economy had an inverted U-shaped relationship with carbon emissions, initially increasing and subsequently decreasing, with a more prominent impact intensity in upstream cities; (2) The digital economy had distinct negative spatial spillover effects on carbon emissions, with more significant effects observed in the midstream and downstream; (3) The digital economy had a nonlinear threshold effect on carbon emissions. When the optimization level of the industrial structure was above a certain threshold, the digital economy reduced carbon emissions. Based on these results, we propose suggestions for accelerating the healthy growth of the digital economy while promoting carbon emission reductions across the YRB.
Risk Assessment and Sustainable Disaster Management
Authors: Inan Dedi I. , Beydoun Ghassan , Othman Siti Hajar
Published: March 2023

A risk assessment is a process of identifying potential risks and hazards, evaluating the likelihood and impact of these risks, and developing strategies to manage these risks across all disaster management (DM) phases: prevention, preparedness, response, and recovery (PPRR) [...]
Artificial Intelligence Classification Model for Modern Chinese Poetry in Education
Authors: Zhu Mini , Wang Gang , Li Chaoping , Wang Hongjun , Zhang Bin
Published: March 2023

Various modern Chinese poetry styles have influenced the development of new Chinese poetry; therefore, the classification of poetry style is very important for understanding these poems and promoting education regarding new Chinese poetry. For poetry learners, due to a lack of experience, it is difficult to accurately judge the style of poetry, which makes it difficult for learners to understand poetry. For poetry researchers, classification of poetry styles in modern poetry is mainly carried out by experts, and there are some disputes between them, which leads to the incorrect and subjective classification of modern poetry. To solve these problems in the classification of modern Chinese poetry, the eXtreme Gradient Boosting (XGBoost) algorithm is used in this paper to build an automatic classification model of modern Chinese poetry, which can automatically and objectively classify poetry. First, modern Chinese poetry is divided into words, and stopwords are removed. Then, Doc2Vec is used to obtain the vector of each poem. The classification model for modern Chinese poetry was iteratively trained using XGBoost, and each iteration promotes the optimization of the next generation of the model until the automatic classification model of modern Chinese poetry is obtained, which is named Modern Chinese Poetry based on XGBoost (XGBoost-MCP). Finally, the XGBoost-MCP model built in this paper was used in experiments on real datasets and compared with Support Vector Machine (SVM), Deep Neural Network (DNN), and Decision Tree (DT) models. The experimental results show that the XGBoost-MCP model performs above 90% in all data evaluations, is obviously superior to the other three algorithms, and has high accuracy and objectivity. Applying this to education can help learners and researchers better understand and study poetry.
New Formulas Involving Fibonacci and Certain Orthogonal Polynomials
Authors: Abd-Elhameed Waleed Mohamed , Ahmed Hany M. , Napoli Anna , Kowalenko Victor
Published: March 2023

In this paper, new formulas for the Fibonacci polynomials, including high-order derivatives and repeated integrals of them, are derived in terms of the polynomials themselves. The results are then used to solve connection problems between the Fibonacci and orthogonal polynomials. The inverse cases are also studied. Finally, new results for the linear products of the Fibonacci and orthogonal polynomials are determined using the earlier result for the moments formula of Fibonacci polynomials.
The Strategic Weight Manipulation Model in Uncertain Environment: A Robust Risk Optimization Approach
Authors: Qu Shaojian , Wang Lun , Ji Ying , Zuo Lulu , Wang Zheng
Published: March 2023

Due to the complexity and uncertainty of decision-making circumstances, it is difficult to provide an accurate compensation cost in strategic weight manipulation, making the compensation cost uncertain. Simultaneously, the change in the attribute weight is also accompanied by risk, which brings a greater challenge to manipulators’ decision making. However, few studies have investigated the risk aversion behavior of manipulators in uncertain circumstances. To address this research gap, a robust risk strategic weight manipulation approach is proposed in this paper. Firstly, mean-variance theory (MVT) was used to characterize manipulators’ risk preference behavior, and a risk strategic weight manipulation model was constructed. Secondly, the novel robust risk strategic weight manipulation model was developed based on the uncertainty caused by the estimation error of the mean and covariance matrix of the unit compensation cost. Finally, a case of emergency facility location was studied to verify the feasibility and effectiveness of the proposed method. The results of the sensitivity analysis and comparative analysis show that the proposed method can more accurately reflect manipulators’ risk preference behavior than the deterministic model. Meanwhile, some interesting conclusions are revealed.
Generalized Helical Hypersurface with Space-like Axis in Minkowski 5-Space
Authors: Güler Erhan
Published: March 2023

We introduce the generalized helical hypersurface having a space-like axis in five-dimensional Minkowski space. We compute the first and second fundamental form matrices, Gauss map, and shape operator matrix of the hypersurface. Additionally, we compute the curvatures of the hypersurface by using the Cayley–Hamilton theorem. Moreover, we give some relations for the mean and the Gauss–Kronecker curvatures of the hypersurface. Finally, we obtain the Laplace–Beltrami operator of the hypersurface.
Efficacy of Dolutegravir versus Darunavir in Antiretroviral First-Line Regimens According to Resistance Mutations and Viral Subtype
Authors: Salvo Pierluigi Francesco , Farinacci Damiano , Ciccullo Arturo , Borghi Vanni , Rusconi Stefano , Saracino Annalisa , Gennari William , Bruzzone Bianca , Vicenti Ilaria , Callegaro Annapaola , Di Biagio Antonio , Zazzi Maurizio , Di Giambenedetto Simona , Borghetti Alberto
Published: March 2023

Background: Dolutegravir (DTG)-based first-line regimens have shown superior efficacy versus darunavir (DRV)-based ones in randomized trials. We compared these two strategies in clinical practice, particularly considering the role of pre-treatment drug resistance mutations (DRMs) and of the HIV-1 subtype. Materials and methods: The multicenter Antiretroviral Resistance Cohort Analysis (ARCA) database was queried to identify HIV-1-positive patients starting a first-line therapy with 2NRTIs plus either DTG or DRV between 2013 and 2019. Only adult (≥18 years) patients with a genotypic resistance test (GRT) prior to therapy and with HIV-1 RNA ≥1000 copies/mL were selected. Through multivariable Cox regressions, we compared DTG- versus DRV-based regimens in the time to virological failure (VF) stratifying for pre-treatment DRMs and the viral subtype. Results: A total of 649 patients was enrolled, with 359 (55.3%) and 290 (44.7) starting DRV and DTG, respectively. In 11 months of median follow-up time, there were 41 VFs (8.4 in 100 patient-years follow-up, PYFU) and 15 VFs (5.3 per 100 PYFU) in the DRV and DTG groups, respectively. Compared with a fully active DTG-based regimen, the risk of VF was higher with DRV (aHR 2.33; p = 0.016), and with DTG-based regimens with pre-treatment DRMs to the backbone (aHR 17.27; p = 0.001), after adjusting for age, gender, baseline CD4 count and HIV-RNA, concurrent AIDS-defining event and months since HIV diagnosis. Compared with patients harboring a B viral subtype and treated with a DTG-based regimen, patients on DRV had an increased risk of VF, both in subtype B (aHR 3.35; p = 0.011), C (aHR 8.10; p = 0.005), CRF02-AG (aHR 5.59; p = 0.006) and G (aHR 13.90; p < 0.001); DTG also demonstrated a reduced efficacy in subtypes C (versus B, aHR 10.24; p = 0.035) and CRF01-AE (versus B; aHR 10.65; p = 0.035). Higher baseline HIV-RNA and a longer time since HIV diagnosis also predicted VF. Conclusions: In line with randomized trials, DTG-based first-line regimens showed an overall superior efficacy compared with DRV-based regimens. GRT may still play a role in identifying patients more at risk of VF and in guiding the choice of an antiretroviral backbone.
RSV A2-Based Prefusion F Vaccine Candidates Induce RSV A and RSV B Cross Binding and Neutralizing Antibodies and Provide Protection against RSV A and RSV B Challenge in Preclinical Models
Authors: Cox Freek , Saeland Eirikur , Thoma Anne , van den Hoogen Ward , Tettero Lisanne , Drijver Joke , Vaneman Cornelis , van Polanen Yolinda , Ritschel Tina , Bastian Arangassery Rosemary , Callendret Benoit , Zahn Roland , van der Fits Leslie
Published: March 2023

RSV is divided into two antigenic subtypes, RSV A and RSV B, which is largely based on the variation in the G protein, while the fusion protein F is more conserved and a target for antibody-mediated neutralization. Here we evaluate the breadth of the protective immune responses across RSV A and RSV B subtypes, induced by vaccines based on the RSV A-based fusion protein, stabilized in the prefusion conformation (preF) in preclinical models. Immunization of naïve cotton rats with preF subunit or preF encoded by a replication incompetent Adenoviral 26, induced antibodies capable of neutralizing recent RSV A and RSV B clinical isolates, as well as protective efficacy against a challenge with RSV A and RSV B strains. Similarly, induction of cross-neutralizing antibodies was observed after immunization with Ad26-encoded preF, preF protein or a mix of both (Ad26/preF protein) in RSV pre-exposed mice and African Green Monkeys. Transfer of serum of human subjects immunized with Ad26/preF protein into cotton rats provide protection against challenges with both RSV A and RSV B, with complete protection against both strains observed in the lower respiratory tract. In contrast, almost no protection against RSV A and B infection was observed after the transfer of a human serum pool isolated pre-vaccination. These results collectively show that the RSV A-based monovalent Ad26/preF protein vaccine induced neutralizing antibodies, as well as protection against both RSV A and RSV B subtypes in animals, including by passive transfer of human antibodies alone, suggesting that clinical efficacy against both subtypes can be achieved.
Providencia alcalifaciens—Assisted Bioremediation of Chromium-Contaminated Groundwater: A Computational Study
Authors: Tasleem Munazzah , Hussein Wesam M. , El-Sayed Abdel-Aziz A. A. , Alrehaily Abdulwahed
Published: March 2023

In Saudi Arabia, seawater desalination is the primary source of acquiring freshwater, and groundwater contains a high concentration of toxic heavy metals. Chromium (Cr) is one of the heavy metals that is widely distributed in the environment, particularly in the groundwater of Madinah. Diverse techniques are employed to eliminate the toxicity of heavy metals from the environment, but, lately, the focus has shifted to biological remediation systems, due to their higher removal efficiencies, lower costs, and more ecologically benign characteristics than the conventional methods. Providencia bacteria engage in a variety of adsorption processes to interact with heavy metals. In this study, we aim to investigate the role of potential active site residues in the bioengineering of chromate reductase (ChrR) from Providencia alcalifaciens to reduce the Cr to a lesser toxic form by employing robust computational approaches. This study highlights Cr bioremediation by providing high-quality homology-modeled structures of wild type and mutants and key residues of ChrR for bioengineering to reduce the Cr toxicity in the environment. Glu79 is found to be a key residue for Cr binding. The mutant models of Arg82Cys, Gln126Trp, and Glu144Trp are observed to establish more metallic interactions within the binding pocket of ChrR. In addition, the wild type ChrR (P. alcalifaciens) has been found to be unstable. However, the mutations stabilized the structure by preserving the metallic contacts between the critical amino acid residues of the identified motifs and the Cr(VI). Therefore, the mutants discovered in the study can be taken into account for protein engineering to create reliable and effective enzymes to convert Cr(VI) into a lesser toxic form.
Assessing Plastic Waste Discharges into the Sea in Indonesia: An Integrated High-Resolution Modeling Approach That Accounts for Hydrology and Local Waste Handling Practices
Authors: Veiga Joana Mira , van Veen Bastien , Buckman Lora , van Gils Jos , Wuriyandoko Dhanang Tri , van der Sluys Caroline , Philp Kate , Acharya Anjali
Published: March 2023

Plastic litter is increasingly accumulating in the marine environment, with rivers considered key pathways for entry. Current estimations of plastic input into the sea from land-based sources are limited in accounting for the mobilization and transport of plastic generated in the whole catchment area or in considering local variations in waste handling practices. Here, we show that, with an integrated discharge modeling approach (based on actual rainfall and local estimates for exposed mismanaged plastic waste), more realistic temporal estimates of plastic discharges into the sea can be constructed. Applying this approach to Indonesia enabled us to estimate the total national inputs of plastic waste into the sea from rivers and coasts and how these vary with rainfall, while providing insight into those catchments, local communities, and waste handling practices that most contribute to plastic waste leakages. We found that the plastic fluxes vary significantly in both the short and long term and that the total amount of plastic waste discharged during wet years may be twice as much as during dry years. Furthermore, river size, catchment population density, local waste management, and proximity of point sources influence river plastic waste loads. Such an integrated assessment can be very effective in helping to prioritize where interventions are most needed and, in combination with frequent monitoring, can provide evidence of the impact that upstream measures have on preventing plastic inputs into the sea.
Can Remotely Sensed Snow Disappearance Explain Seasonal Water Supply?
Authors: Bishay Kaitlyn , Bjarke Nels R. , Modi Parthkumar , Pflug Justin M. , Livneh Ben
Published: March 2023

Understanding the relationship between remotely sensed snow disappearance and seasonal water supply may become vital in coming years to supplement limited ground based, in situ measurements of snow in a changing climate. For the period 2001–2019, we investigated the relationship between satellite derived Day of Snow Disappearance (DSD)—the date at which snow has completely disappeared—and the seasonal water supply, i.e., the April—July total streamflow volume, for 15 snow dominated basins across the western U.S. A Monte Carlo framework was applied, using linear regression models to evaluate the predictive skill—defined here as a model’s ability to accurately predict seasonal flow volumes—of varied predictors, including DSD and in situ snow water equivalent (SWE), across a range of spring forecast dates. In all basins there is a statistically significant relationship between mean DSD and seasonal water supply (p ≤ 0.05), with mean DSD explaining roughly half of the variance. Satellite-based model skill improves later in the forecast season, surpassing the skill of in-situ-based (SWE) models in skill in 10 of the 15 basins by the latest forecast date. We found little to no correlation between model error and basin characteristics such as elevation and the ratio of snow water equivalent to total precipitation. Despite a relatively short data record, this exploratory analysis shows promise for improving seasonal water supply prediction, in particular for snow dominated basins lacking in situ observations.
Un village et son espace : urbanisme et évolution topographique de Rieux-Volvestre (Haute-Garonne) à travers l’exemple du faubourg de La Bastide.
Authors: Gourvennec Michaël
Published: March 2023

La réalisation de travaux d’assainissement dans le centre bourg de Rieux-Volvestre a conduit le Service régional de l’archéologie de la région Occitanie à prescrire un suivi archéologique des travaux. Cette opération d’archéologie préventive a concerné un tracé de plus d’un kilomètre et a duré vingt-cinq semaines, réparties sur les années 2014 et 2015. À cette occasion, il a été possible d’appréhender les évolutions et transformations qui ont structuré puis remodelé le village entre la fin du XIIe siècle et l’établissement du plan cadastral dit «napoléonien » en 1823. L’observation des faits archéologiques mis au jour (réseau viaire, fortifications, bâtiments, etc.) et les interprétations relatives à ces vestiges permettent d’analyser et de comprendre les dynamiques morphologiques conférant au village son aspect actuel.
La forme du village en Haute-Bretagne : entre archéologie préventive et enquête historique, l’empreinte des moines ligériens
Authors: Poilpré Pierre , Pichot Daniel , Ah-Thon Emmanuelle , Beuchet Laurent , Esnault Élen , Boulanger Françoise Le
Published: March 2023

Un corpus de cinq opérations d’archéologie préventive réalisées ces dernières années dans le quart nord-est du département d’Ille-et-Vilaine (Bretagne), toutes situées au coeur ou en contact d’habitats villageois actuels, a été réuni et permet aujourd’hui d’esquisser l’évolution morphologique sur le temps long du village dans cette région. La particularité de ce corpus réside dans le fait qu’au Moyen Âge central l’encadrement religieux des cinq villages concernés par les opérations relevait d’abbayes de la vallée de la Loire. L’étude qui confronte données archéologiques, documents planimétriques et textes anciens, révèle l’empreinte plus ou moins forte de ces établissements sur la forme de l’habitat. Ici, elle pourrait avoir été considérable lorsque les moines se sont implantés physiquement dans le village mais elle paraît contrariée lorsque ceux-ci sont concurrencés par une seigneurie laïque.
La mise en défense des communautés du Toulousain (XIVe siècle-milieu XVIe siècle) : l’impact des fortifications sur le tissu villageois au regard des sources.
Authors: Lacroix Camille
Published: March 2023

In the late Middle Ages, community fortifications became a more common sight in the countryside around Toulouse. Revealed by an abundance of textual references, this phenomenon manifested itself in the reconstruction of old walls, through the enhancement of new defences or by the reduction of the fortified space. Cross-referencing of data from written, planimetric and archaeological sources has often allowed rectification or clarification of data concerning the footprint of the fortifications, their nature and their implementation. This approach has also highlighted the difficulty in perceiving the development of fortifications and in putting forward a relative or absolute timescale when no results of archaeological operations are available. Consideration of the contributions and the limits of the methodological approach incites us to review our own understanding of how fortifications were erected from these different sources and to envisage defensive structures in a developing context.
Landiras virus, a novel hantavirus hosted by Talpa aquitania n.sp, a recently discovered South Eeuropean mole species
Authors: Hugot Jean-Pierre , Vanmechelen Bert , Maes Piet
Published: March 2023

Keywords: Hantavirus, Mammantavirinae, Orthohantavirus, Landiras virus, Talpa aquitania
« Bas niveaux » de qualification, mutations du travail et usage de la formation continue
Authors: Santelmann Paul
Published: March 2023

L’incapacité à utiliser l’outil de la formation continue en direction des publics les moins qualifiés, dont on dit par préjugé qu’ils ne le souhaitent pas, a des répercussions graves sur la considération due aux quelques douze millions d’ouvriers et d’employés. La dévalorisation de leur emploi, fondée sur l’ignorance de savoirs « masqués » construits dans l’expérience, trouble la relation à leurs enfants et produit de l’exclusion. Le congé de formation (CIF) a un impact positif pour les non-qualifiés mais il ne concerne que ceux qui sont déjà salariés et un public très restreint.
Une formation tout au long de la vie pour le public en situation d’illettrisme. Les freins possibles à l’accès aux dispositifs
Authors: Levent Aline
Published: March 2023

L’idée d’un droit à formation tout au long de la vie est au cœur des préoccupations et discours dans le monde de la formation continue. Ce cheval de bataille actuel des pouvoirs publics est porteur d’un message clair : tout citoyen doit pouvoir accéder à la formation à tout moment de sa vie. Mais l’intention ne suffit pas et il semble que la mise en œuvre ne soit pas si simple. Mettre noir sur blanc et clamer haut et fort que les hommes sont libres et égaux en droits, dans le domaine de l’accès à la formation, comme dans bien d’autres champs, n’a jamais garanti une égalité dans les faits. Pour certains publics notamment, ce nouveau leitmotiv peut sembler bien utopique. Ainsi, dans le cas des personnes en situation d’illettrisme, le concept de formation tout au long de la vie mérite particulièrement d’être interrogé.
Le DAEU, un bac pour les adultes
Authors: Fijalkow Yona , Fijalkow Eliane
Published: March 2023

C’est parce qu’ils n’ont pas pu ou pas voulu apprendre au moment où c’était encore possible qu’ils en sont là. C’est parce qu’ils se sentent exclus qu’ils reviennent sur les bancs de l’université pour apprendre. Le DAEU, véritable baccalauréat adulte, facilite leur réintégration sociale, mais nombreux sont ceux qui abandonnent en route car le vécu scolaire antérieur, les blocages et les difficultés à retrouver des contraintes liées à la demande universitaire sont autant d’obstacles à la motivation initiale.
La professionnalisation des formateurs impliqués dans la formation de base : un processus inachevé
Authors: Leclercq Véronique
Published: March 2023

L’amélioration de la qualité de la formation de base d’adultes et de jeunes adultes passe en partie par une professionnalisation accrue des agents éducatifs concernés : formateurs, responsables de formation, personnels d’accueil, etc. Si l’on veut que la formation tout au long de la vie soit un levier de lutte contre les inégalités sociales, économiques et culturelles, il est nécessaire que les populations les plus en difficulté(s) aient accès à des dispositifs de formation variés, adaptés, souples, mais aussi à des dispositifs conçus et animés par de véritables professionnels. Mais que signifie être un professionnel de la formation de base ? Quelles étapes identifie-t-on dans un processus de professionnalisation ? Quels progrès et quelles résistances marquent les évolutions de ces dernières années ?
Physical and foundry propertiesof Cu-Sn-Al system alloys
Authors: T Kimstach , K Uzlov , S Repyakh , V Mazorchuk , R Usenko , L Ivanova
Published: March 2023

Tin-aluminum bronze containing Sn - up to 6.73% and Al - up to 7.53% (by weight) physical and
casting properties determination.
Methodology. Melting has been carried out in graphitecrucible in induction furnace under charcoal layer. Alloys liquidus
and solidus temperatures have been investigated by thermography results of solidifying melt. Free (С) and absolutely
difficult (АЗ) linear shrinkage values and alloy transition temperature from plastic to elastic state during cooling in mold
have been studied by conventional methods. Bronzes fluidity has been estimated by the spiral sample filled channel
length according to GOST 16438. Bronze BrO3A3 tendency to burn and to hot and cold cracks formation has been
evaluated by samples surface visual examination results. Cast bronze specific density has been determined by calculation. Studied alloys mechanical properties have been calculated based on corresponding samples tests results at their
impact bending at room temperature in accordance with actual standards. Alloys chemical composition control has been
carried out on precision analyzer EXPERT 4L on specimens cut from club-shaped samples. Microstructural studies
have been performed on metallographic microscopic samples prepared by standard methods on optical microscope
Neophot-21. Approximation reliability value and corresponding dependences have been built using EXEL computer program.
Results.According to qualitative and quantitative indicators and system Cu-Sn-Al bronzes with Sn content up to 6.73%
and Al content up to 7.53% physical and foundry properties assessments, it has been determined that among possible
tin and aluminum content in Cu-Sn- Al the most promising is bronze with 3...4% (by weight) of these alloying components each.
Originality.For the first time number of physical and foundry properties of Cu-Sn-Al system bronze (with Sn content up
to 6.73% and Al up to 7.53%) have been determined. It has been first established that such bronzes linear shrinkage,
transition temperature from plastic to elastic state during cooling after solidifying and impact bending value at normal
temperature depend on their structure, i.e. phase composition determined by its alloying elements content in bronze.
Practical value.According to studies of physical and foundry properties results, bronze BrO3A3 has been recommended to be used as casting material
Investigation of closed cavity conditions in the bottom of cast rolls СПХН-60
Authors: O Bilyi , L Solonenko , I Osipenko , R Usenko , S Repyakh , V Khrychykov
Published: March 2023

The paper investigates the possibility of preventing the occurrence of closed-type shrinkage shells in the lower necks of
СПХН-60 iron rolling rolls by changing the thermophysical and dimensional parameters of the elements of the combined
foundry mold, which is currently used in foundries.
The research was carried out based on the results of thermography of real rolls of СПХН-60, adaptation of the obtained
data and computer modeling of the process of hardening of cast iron rolls in the combined casting-sand mold, as well as
the first developed parametric criterion of sequential hardening in the system of the lower neck of the roll and its barrel.
The regularities of the complex influence of the diameters of the barrel and the lower necks of the rolls, the sizes and
thermophysical parameters of the materials of the combined form on the sequence of solidification of these casting elements have been established. The obtained data indicate that increasing the level of thermophysical properties of the
molding mixture for the lower neck of the roll within the limits of the use of currently known refractory non-metallic materials does not prevent the occurrence of a shrinkage shell in the lower neck of the rolls of СПХН-60 execution. Increasing the level of the heat-accumulating capacity of the forming mixture for the lower neck of the roll to 10000
Ws
0,5
/(m²С) will prevent the occurrence of a shrinkage shell in the lower neck of the rolls of СПХН-60 performance,
but it is not expedient due to the appearance of a layer of bleached iron in the lower neck, which is unacceptable for any
rolling mill.
To solve this problem, it is recommended for СПХН-60 rolls to use shielding of the roll combined form at a certain moment of solidification of the melt in the barrel.
Рurposeof the work is to investigate the possibility of preventing the occurrence of closed-type shrinkage shells in the
lower necks of rolling rolls due to changes in the thermophysical parameters of their forming mixtures.
Methodology.The work uses the method of thermography and computer modeling using the LVMFlow program.
Originality.For the first time, the regularities of the complex influence of thermophysical and dimensional parameters of
the elements of the combined foundry mold on the occurrence of a shrinkage shell in the lower neck of the СПХН-60
rolling rolls were established.
Indonesia's Digital Economy's Development
Authors: Dudhat Amitkumar , Agarwal Vertika
Published: March 2023

Digital technology must be used in all facets of life and business for global advancements to lead to the employment of technology in all disciplines, including the economic sector. One of the nations that quickly digitized their economy was Indonesia. The issue is whether Indonesia can foresee the effects and dangers that the digital economy will pose. This study's objective is to examine the growth of Indonesia's digital economy and the challenges it poses from the standpoint of national defence. The descriptive qualitative methodology is used in this study. Interviews with representatives from the Ministry of Communication and Information, the Ministry of Defense, and the Indonesian Coordinating Ministry for Economic Affairs provided the data, which was then supplemented with secondary information from these agencies. The study's findings show that Indonesia's digital economy is growing quite well, which boosts the country's GDP. They also show that productivity is rising, production, consumption, and distribution are moving more quickly, there is economic growth in various sectors, and the country can continue to operate despite the Covid-19 pandemic. The digital economy, however, also poses a threat to national security because digitization forces all data to be connected to servers that are vulnerable to data misuse and exploitation; transactions that are not secure from malware-based cyberattacks; fraudulent transactions or hacks by hackers; and infrastructure limitations that have not yet reached all parts of Indonesia
THE MEDIUM TRAVEL GUIDE: SOME ASPECTS OF IT’S STRATEGIES AND GOALS
Authors: Denkovska Milica , Dimitrijovska-Jankulovska Anita
Published: March 2023

There is no extensive secondary literature on travel guides, despite their popularity among readers and their status as one of the best-selling genres in bookstores. The medium was more thoroughly researched in the disciplines of geography, tourism and folklore, especially in the late 1980s and 1990s, although different aspects and points were deepened depending on the discipline and thus a “compact field of reliable knowledge and theories” could not be developed. (Wicke 2011: 22). Buhl (2020: 39) concludes that travel guide research is primarily concerned with the historical change in the genre from its emergence to the 20th century or attempts to create a typology of this broad, diverse genre. However, for the purpose of this research, of particular interest are the publications that refer to the ways in which the target countries are presented from an intercultural perspective; still, the number of these studies has remained insignificant to this day. The most recent and very comprehensive study comes from Gesa Wicke (2011), who fills the research gap with her study of the staging of foreignness in tourist guides to Sicily. The subject of analysis based on available research for the medium travel guide will be the travel guide form Philine von Oppeln “Nordmazedonien. Mit Skopje, Ohridsee und allen Nationalparks” (2020).
Surgical treatment of malignant tumors of the cardiac part of the stomach, complicated by bleeding, perforation and stenosis
Authors: Ivanchov P.V. , Prudnikova O.B.
Published: March 2023

The aim of the work is improving the results of surgical treatment of malignant tumors localized in the cardiac part of the stomach, complicated by bleeding, perforation and stenosis. In the Kyiv City Center for providing assistance to patients with acute gastrointestinal bleeding on the basis of the "Kyiv City Clinical Hospital No.12" from 2006 to 2020, 766 patients with malignant tumors of the stomach, which were complicated by bleeding, perforation or stenosis, were treated. Including, 292 patients had a tumor localized in the cardiac part of the stomach, including with a transition to the esophagus – in 30 (10.3%), 10 (33.3%) of these patients had stenosis phenomena). The tumor was complicated by bleeding in 285 (97.6%) patients, in 10 (3.5%) by bleeding and stenosis, in 7 (2.4%) by perforation of the tumor, in 2 by perforation and bleeding. Operative treatment was performed in 138 (47.3%) patients out of 292. At the same time, radical operations were performed in 94 (68.1%) patients, 1 (1.1%) of them due to tumor perforation. Palliative and symptomatic operations were performed in 44 (31.9%) patients. Among them, 2 (4.5%) patients were operated on for perforation, 2 (4.5%) for a combination of perforation and bleeding.8 (5.6%) patients underwent emergency surgery at the height of ongoing bleeding and at the height of its recurrence, including 4 (50.0%) radically, 4 (50.0%) non-radically. Of them, 5 (62.5%) also had perforation of the tumor. In the early delayed period (ERP), after adequate preparation and comprehensive follow-up examination, operative treatment was performed in 130 (94.2%) patients, 92 (70.7%) underwent radical surgery, 38 (29.2%) underwent non-radical surgery. The total postoperative mortality was 6.5% (12 patients), while the specific weight of mortality after non-radical surgical interventions was 4.6 times higher in comparison with the mortality rate after radical operations. It is established thatthe specific weight of deaths after radical surgical interventions was 2.2 times lower compared to palliative and symptomatic surgeries. The frequency of performing lymphodissection in volume D2 was higher in 2.8times after radical operations performed in the RVP and amounted to 71.8%. In the case of perforations of malignant tumors, 80.0% were non-radical surgical interventions.

Keywords: radical operations, gastrectomy, lymphodissection.
Nuevos procesos comunicacionales de las empresas para ganar el ZMOT
Authors:   , Luque Melina Rocío
Published: March 2023

El presente trabajo de tipo cuantitativo, alcance descriptivo y temporalidad transversal, tiene por objetivo caracterizar los consumidores argentinos residentes en la Ciudad Autónoma de Buenos Aires (CABA) a fin de conocer sus expectativas, hábitos, conductas y preferencias para establecer elementos de orientación en la comunicación empresarial en el ZMOT. En tal sentido, se ha administrado una encuesta diseñada ad hoc, a una muestra de n=177 usuarios de internet de CABA, para conocer su opinión como prosumidores e indagar sobre su comportamiento en torno a las tomas de decisión en torno al consumo. Se obtiene como resultado del estudio que, en general, el grado de prosumismo de la muestra es del 69.6%; mientras que también se han podido diferenciar tres tipos de consumidores: Prosumidores (53%); Modelo Neutral (37.6%) y Modelo Tradicional (9.4%). Del análisis de las conductas y hábitos de consumo y prosumo de estos, se ha encontrado que, para abordar una estrategia de ZMOT adecuada para este tipo de público, las empresas deberían basarse fundamentalmente en: 1) posicionamiento con alta visibilidad en las búsquedas directas a través de buscadores como Google, 2) publicidad especialmente dirigida a la telefonía celular, 3) promoción de sus productos a través de influencers o usuarios de las redes; 4) uso de Tutoriales y videos explicativos, con contenidos atractivos sobre la calidad, funcionamiento y características de productos y marcas que se quieran comunicar.
Faktor Risiko Pekerjaan untuk Carpal Tunnel Syndrome pada Pekerja Kantoran
Authors: Berhimpon Christy E. L. , Lengkong Andriessanto C. , Prasetyo Eko
Published: March 2023

Abstract: Carpal tunnel syndrome (CTS) is often reported as an occupational disease and a common problem among workers who often use their hands. The causes of CTS are considered multifactorial, involving both individual and occupational factors. Computer use is thought to be a risk factor for CTS. Using a computer keyboard is associated with wrist or hand pain, which is related with repetitive hand movements. However, the available evidence regarding the relationship between computer use or occupational risk factors and CTS is still controversial. This study aimed to determine the occupational risk factors for CTS in office workers. This was a literature review study. Data were searched from databases of Crossref and Google Scholar. The keywords were carpal tunnel syndrome, risk factor, ergonomic, occupation, computer office, workers The results obtained 10 articles reviewed according to predetermined inclusion and exclusion criteria. Work duration and work periods were referred to occupational risk factors for CTS. Awkward wrist/hand postures especially without mousepad supporting the hand or wrist, and repetitive movement were direct risk factors for CTS. In conclusion, risk factors for CTS among office workers are duration and period of working, awkward wrist/hand posture, and repetitive movement.
Keywords: occupational risk factors; carpal tunnel syndrome; office workers.
 
Abstrak: Carpal tunnel syndrome (CTS) merupakan penyakit akibat kerja dan menjadi masalah umum di antara para pekerja yang sering menggunakan tangan. Penyebab CTS dianggap multifaktorial, yang melibatkan faktor individu dan pekerjaan. Penggunaan komputer diduga menjadi faktor risiko CTS. Penggunaan keyboard komputer dihubungkan dengan nyeri pergelangan tangan atau tangan, yang berkaitan dengan gerakan tangan berulang. Walaupun demikian, bukti yang tersedia perihal keterkaitan antara penggunaan komputer atau faktor risiko pekerjaan dan CTS masih kontroversial. Penelitian ini bertujuan untuk mengetahui faktor risiko pekerjaan terjadinya CTS pada pekerja kantoran. Jenis penelitian ini ialah suatu literature review menggunakan data- base Crossref dan Google Scholar dengan kata kunci carpal tunnel syndrome, risk factor, ergonomic, occupation, computer office, workers. Hasil penelitian mendapatkan 10 artikel yang ditelaah sesuai dengan kriteria inklusi dan eksklusi yang telah ditentukan. Durasi kerja dan periode kerja disebut sebagai faktor risiko pekerjaan untuk terjadinya CTS. Postur yang janggal, khususnya dikarenakan tanpa penggunaan mousepad penyangga tangan atau pergelangan tangan serta gerakan berulang saat menggunakan mouse dan mengetik menggunakan keyboard secara langsung menjadi faktor risiko terjadinya CTS. Simpulan penelitian ini ialah durasi dan periode kerja, postur tangan/pergelangan yang janggal, dan gerakan berulang merupakan faktor risiko pekerjaan untuk terjadinya CTS.
Kata kunci: faktor risiko pekerjaan; carpal tunnel syndrome; pekerja kantoran