bluuebunny/crossref_metadata_2025 huggingface dataset:
Cloud Gaming Approach To Learn Programming Concepts
Authors:   Department of Computer science, Lahore Garrison University,Pakistan, Baig Daniyal , Akram Waseem ,   Department of Computer science, Lahore Garrison University,Pakistan, Haq H. Burhan ul ,   Department of Computer science, Lahore Garrison University,Pakistan, Asif Muhammad ,   Department of Computer science, Lahore Garrison University,Pakistan
Published: September 2023

Computer science and programming subjects can be overwhelming for new students, presenting them with significant challenges. As programming is considered one of the most important and complex subjects to grasp, it necessitates a fresh teaching methodology that can make the learning process more enjoyable and accessible. One approach that has gained attraction is the integration of gaming elements, which not only makes programming more engaging but also enhances understanding and retention. In our research, we adopted an innovative educational strategy that utilized a Role-Playing Game (RPG) centered on programming concepts. The aim of the research is to create an interactive and enjoyable learning experience for students by leveraging the immersive nature of gaming. The RPG provided a platform for students to actively participate in programming challenges, where they will apply their knowledge and skills to complete tasks and advance through the game. Our teaching methodology focuses on embedding programming concepts within the game's missions and quests. Additionally, we considered students' overall experience and engagement throughout the research study. Capturing both objective and subjective measures, we gained insights into the impact of our teaching methodology on student learning outcomes and their overall perception of the educational experience. In the RPG, each student is required to complete a series of tasks within the game in order to advance to the next mission. The sequential nature of the tasks ensured a structured learning process, gradually introducing new concepts and challenges to the students. The game mechanics provides an immersive environment for students to play different missions and answer the questions and learn programming. Through our research, we aim to present a compelling teaching methodology that effectively addresses the challenges facing new students in learning computer science and programming subjects. Harnessing the power of gaming, we strive to make programming more accessible, enjoyable, and engaging, ultimately empowering students to become proficient programmers. The evaluation of student performance, task accomplishment, and overall experience will provide valuable insights into the effectiveness and potential impact of this innovative approach.
Evolução do grau de incapacidade física e do escore olhos, mãos e pés em casos novos de hanseníase
Authors: Bomtempo Camila Ferreira , Ferrari Stephanie Mara Fernandes , Grossi Maria Aparecida de Faria , Lyon Sandra
Published: September 2023

Este estudo tem por objetivo avaliar a evolução do grau de incapacidade física e do escore olhos, mãos e pés, do diagnóstico à alta medicamentosa, segundo as variáveis sociodemográficas e clínicas, em pacientes diagnosticados com hanseníase. Trata-se de estudo transversal, baseado na análise de 71 pacientes com diagnóstico de hanseníase, acompanhados no Hospital Eduardo de Menezes, centro de referência em Belo Horizonte, Minas Gerais, Brasil, entre janeiro de 2017 a dezembro de 2020. Foi observado predomínio do sexo feminino (53,5%), média de idade de 46 anos, sendo a maioria procedente de outros municípios do interior de Minas Gerais (54,9%). A forma clínica mais frequente foi a dimorfa (64,8%), classificação operacional multibacilar (84,5%). O grau de incapacidade física 0 foi o mais prevalente no diagnóstico (56,5%) e na alta (53,1%), e em relação ao escore olhos, mãos e pés, houve variação entre 0 e 10 no diagnóstico e entre 0 e 8 na alta. Pelo teste de McNemar foi observado que dentre os pacientes que apresentavam algum grau de incapacidade física no momento do diagnóstico, 30,8% apresentaram ausência de incapacidade na alta. Ao comparar a evolução do grau de incapacidade física de paucibacilares e multibacilares no momento do diagnóstico e da alta, houve manutenção em 59,3% e melhora em 17,2% dos pacientes. Os dados apresentados indicam que muitos pacientes foram tratados tardiamente já apresentando as formas graves e com sequelas, já que o estudo foi desenvolvido em um centro de referência, que atende casos mais complexos e com complicações já instaladas. Os dados sugerem que pacientes assistidos que realizam o tratamento com poliquimioterapia podem ter melhora das incapacidades já instaladas. O mesmo ocorreu com o escore olhos, mãos e pés, que ao final do tratamento instituído houve melhora se comparado com a admissão.
RESPONSABILIDADE SOCIAL: IMPACTO DAS PRÁTICAS DE SUSTENTABILIDADE NO ÂMBITO DA EMPRESA NATURA COSMÉTICOS
Authors: Campelo Arandi , Carmo Eronildo , Araujo Nely
Published: September 2023

Este artigo tem por objetivo evidenciar a essencialidade da responsabilidade social no âmbito corporativo, bem como a importância de se adotar uma gestão sustentável. O trabalho foi estruturado por meio de pesquisa bibliográfica e de campo. Os teóricos principais que embasaram este artigo foram Barbieri & Cajazeira (2017) e Tachizawa (2011). A pesquisa teve como campo investigativo 50 representantes da empresa Natura Cosméticos, dos quais 5 deles participaram efetivamente. Para coleta de dados foi utilizado um questionário semiaberto. A análise apontou que a gestão responsável é uma das principais formas de promover equilíbrio social, ambiental e econômico, observando ainda a aplicabilidade das práticas sustentáveis como um forte diferencial competitivo organizacional. Além disso, faz-se necessária a disseminação e conscientização do público interno e externo, principalmente acerca do tema, a fim de contribuir para o desenvolvimento sustentável, sendo este um papel importante nas organizações. Palavras-chave: Sustentabilidade. Impacto das práticas de responsabilidade social. Gestão sustentável.
Depressão e verdade de si: análise de testemunhos presentes no jornal O Globo
Authors: Bozz Augusto Flamaryon , Freire Filho João
Published: September 2023

Na esteira de pesquisas desenvolvidas sobre a experiência do sofrimento psíquico na mídia brasileira, este trabalho analisa os testemunhos de pessoas que afirmam ter sofrido de depressão e que foram publicados no jornal O Globo entre os anos de 1990 e 1995. A escolha do recorte se deve, em primeiro lugar, ao fato de que nessa época a imprensa brasileira começa a sinalizar algumas mudanças na relação entre a percepção social sobre a depressão e a posição da testemunha; em segundo lugar, pelo fato de que o jornal se afirma como um veículo de comunicação de grande impacto na vida social dos brasileiros. Valeu-se do método arqueo-genealógico para analisar o arquivo extraído a partir do acervo online do jornal. Nos testemunhos estudados, percebeu-se que havia um jogo entre enunciados de caráter constativos e enunciados de caráter performáticos. Ambos determinavam menos o fato narrado do que o modo de ser do sujeito. Instauravam também uma temporalidade circular, em que a qualificação de si através do passado era imprescindível para testemunhar.
Jornalismo, decolonialidade e ativismo digital: um estudo sobre o Nós, mulheres da periferia
Authors: Bruck Mozahir Salomão , Avelar Sebastião
Published: September 2023

Este artigo propõe uma discussão sobre o jornalismo a partir de uma aproximação deste com a lógica decolonial e o ativismo social. Nesse sentido, busca promover reflexões sobre os limites do jornalismo, problematizando a epistemologia positivista, em termos da abordagem da diversidade social contemporânea. Para desenvolver este estudo exploratório, analisamos depoimentos publicados no site do coletivo Nós, mulheres da periferia. Com base nessa análise, Consideramos que o coletivo, ao tentar se aproximar e inspirar-se em uma comunicação decolonial, prioriza a busca da humanização das mulheres pretas e periféricas de São Paulo, por meio das narrativas delas mesmas.
João Canavilhas: “A criatividade é o escudo de defesa do jornalista em relação à IA”
Authors: Di Fátima Branco
Published: September 2023

João Canavilhas é um dos intelectuais mais atentos às transformações impulsionadas pelas tecnologias digitais no jornalismo ibero-americano. Alguns dos seus trabalhos alcançaram reconhecimento internacional, justamente por introduzir leituras originais em momentos de importantes mudanças na produção do conteúdo noticioso.

Doutor em Comunicação, Cultura e Educação pela Universidade de Salamanca (USAL), em Espanha, é Professor Associado na Universidade da Beira Interior (UBI), em Portugal. Investigador integrado do LabCom – Comunicação e Artes da UBI, é autor de dezenas de trabalhos publicados em livros e revistas científicas de alto impacto. Consultor de projetos em Portugal, Espanha e Brasil, já integrou a equipa de 15 projetos de investigação financiados por organismos nacionais e internacionais.

O seu trabalho de investigação centra-se em vários aspetos da relação entre a comunicação e as novas tecnologias, nomeadamente nos campos do jornalismo e da política. Nesta entrevista exclusiva à revista Estudos em Jornalismo e Mídia (EJM), João Canavilhas analisa o impacto da Inteligência Artificial (AI) no jornalismo profissional.
Left atrial calcification on chest CT: atrial ablation replaces rheumatic heart disease as the most identified etiology
Authors: Chamberlin Jordan H. , Smith Carter D. , Gowani Zain , Elsayed Mina Gad , Owji Shahin C. , Friedman Brandon , Maisuria Dhruw , Berrios Carly , Baruah Dhiraj , Schoepf Uwe Joseph , Kabakus Ismail M.
Published: September 2023

Purpose

Left atrial calcification (LAC), a primarily radiologic diagnosis, has been associated with rheumatic heart disease (RHD) and rheumatic fever (RF). However, left atrial calcification continues to be observed despite a significant decrease in the prevalence of rheumatic heart disease. The purpose of this study was to investigate other possible etiologies of left atrial calcification.

Material and methods

This retrospective, observational single-center study included patients from 2017 to 2022 identified as having left atrial calcification as well as age- and sex-matched controls. The prevalence of rheumatic heart disease, atrial ablation, and mitral valve disease was compared, and odds ratios were calculated for each independent variable.

Results

Sixty-two patients with left atrial calcifications were included and compared with 62 controls. 87.1% of patients in the left atrial calcifications cohort had a history of atrial fibrillation compared with 21% in the control cohort (p < 0.001). 16.1% of patients in the calcifications cohort presented a history of rheumatic fever compared with zero in the control cohort (p = 0.004). 66.1% of the left atrial calcifications cohort had a history of atrial ablation compared with 6.5% of the control group (p < 0.001). The odds ratio for left atrial calcification was 19.0 vs. 4.8 for rheumatic fever (comparative odds = 4.0 for atrial ablation vs. rheumatic fever). Multivariable log model found atrial ablation to explain 79.8% of left atrial calcifications identified.

Conclusions

Our study found a 4-fold higher association between history of atrial ablation and left atrial calcification compared with rheumatic heart disease, suggesting a potential shift in etiology.
Supplier Risk Management Practices and Performance of Supply Chain in the Health Sector in Kenya
Authors: Owich James Amere , Odero Jackline Akoth
Published: September 2023

Disruptions within the supply chain due to various risks can have significant and far-reaching consequences for businesses. To effectively address these risks, firms must develop robust strategies for risk management. The focal point of this study was the examination of supplier risk management practices and their influence on the performance of supply chains within the healthcare sector in Kenya. Employing a descriptive survey research design, the study targeted a pool of 102 respondents, ultimately drawing a sample of 81 staff members from four county referral hospitals in western Kenya. Data collection was carried out using closed-ended questionnaires, ensuring a methodically sound approach. To validate the research instrument, content validity was rigorously assessed, and the reliability of the instrument was established through the application of Cronbach's alpha test. Subsequently, the collected data underwent comprehensive analysis, utilizing descriptive statistics in the form of frequency and percentage calculations. Additionally, inferential analysis was conducted, employing a simple linear regression model to determine the relationship between supplier risk management practices and supply chain performance in the health sector. The study's findings revealed a substantial and positive correlation between supplier risk management practices and supply chain performance, as indicated by the coefficient results (β = 0.521, t = 7.256, p< 0.05). Consequently, the null hypothesis was rejected, affirming that supplier risk management practices wield a considerable influence on the performance of the supply chain within the Kenyan health sector. These findings hold the potential to enhance our understanding of supplier management, offering valuable insights for managers within the health sector. Notably, the study emphasizes the crucial role that supplier risk management techniques like risk identification, risk assessment, and dual sourcing play in improving the performance of the supply chain. Furthermore, these findings may serve as a valuable resource for policymakers, offering essential information that can inform the formulation and revision of policies related to supply chain management within the healthcare sector.
Cyclones enhance the transport of sea spray aerosols to the high atmosphere in the Southern Ocean
Authors: Shi Jun , Yan Jinpei , Wang Shanshan , Zhao Shuhui , Zhang Miming , Xu Suqing , Lin Qi , Yang Hang , Dai Siying
Published: September 2023

Abstract. Cyclones are expected to increase the vertical transport
of sea spray aerosols (SSAs), which may significantly impact the climate by
increasing the population of cloud condensation nuclei (CCN) and the cloud droplet number concentration (Nd). In this study, a high-time-resolution (1 h) aerosol monitoring
was carried out in the middle and high Southern Hemisphere from 23 February to 4 March 2018. The characteristics of SSAs during
three cyclones were observed during the cruise. The results showed that SSA
level in the low atmosphere did not increase with the wind speed during
cyclone processes, which was different from the anticipated scenario that
SSA concentration would increase with wind speed. However, the size of SSA
particles during cyclones was larger than that in the no-cyclone periods. It
seems that the generation of SSAs was enhanced during cyclones, but SSA
concentration near the sea surface increased scarcely. The upward-transport
proportion was calculated according to the wind stress and sea salt flux
between cyclone and non-cyclone periods. It indicated that more than
23.4 % of the SSAs were transported upwards by cyclone processes during
event 1, and 36.2 % and 38.9 % were transported upwards in event 2 and event 3, respectively. The
upward transport of SSAs was the main reason why SSA concentration did not
increase in the low atmosphere. The transport of SSAs to the high atmosphere
during cyclones may additionally increase the CCN burden in the marine
boundary layer, which may affect the regional climate. This study highlights
the importance of SSA transport to the high atmosphere by cyclones and
extends the knowledge of SSA generation and the impact factor during the
cyclone period in marine atmosphere.
WRF-Comfort: Simulating micro-scale variability of outdoor heat stress at the city scale with a mesoscale model
Authors: Martilli Alberto , Nazarian Negin , Krayenhoff E. Scott , Lachapelle Jacob , Lu Jiachen , Rivas Esther , Rodriguez-Sanchez Alejandro , Sanchez Beatriz , Santiago Jose Luis
Published: September 2023

Abstract. Urban overheating, and its ongoing exacerbation due to global warming and urban development, leads to increased exposure to urban heat and increased thermal discomfort and heat stress. To quantify thermal stress, specific indices have been proposed that depend on air temperature, mean radiant temperature (MRT), wind speed, and relative humidity. While temperature and humidity vary on scales of hundreds of meters, MRT and wind speed are strongly affected by individual buildings and trees, and vary at the meter scale. Therefore, most numerical thermal comfort studies apply micro-scale models to limited spatial domains (commonly representing urban neighborhoods with building blocks) with resolutions on the order of 1 m and a few hours of simulation. This prevents the analysis of the impact of city-scale adaptation/mitigation strategies on thermal stress and comfort. To solve this problem, we develop a methodology to estimate thermal stress indicators and their subgrid variability in mesoscale models – here applied to the multilayer urban canopy parametrization BEP-BEM within the WRF model. The new scheme (consisting of three main steps) can readily assess intra-neighborhood scale heat stress distributions across whole cities and for time scales of minutes to years. The first key component of the approach is the estimation of MRT in several locations within streets for different street orientations. Second, mean wind speed, and its subgrid variability, are parameterized as a function of the local urban morphology based on relations derived from a set of microscale LES and RANS simulations across a wide range of realistic and idealized urban morphologies. Lastly, we compute the distributions of two thermal stress indices for each grid square combining all the subgrid values of MRT, wind speed, air temperature, and absolute humidity. From these distributions, we quantify the high and low tails of the heat stress distribution in each grid square across the city, representing the thermal diversity experienced in street canyons. In this contribution, we present the core methodology as well as simulation results for Madrid (Spain), which illustrate strong differences between heat stress indices and common heat metrics like air or surface temperature, both across the city and over the diurnal cycle.
Seasonal variation in landcover estimates reveals sensitivities and opportunities for environmental models
Authors: Myers Daniel T. , Jones David , Oviedo-Vargas Diana , Schmit John Paul , Ficklin Darren L. , Zhang Xuesong
Published: September 2023

Abstract. Most readily available landuse/landcover (LULC) data are developed using growing season remote sensing images often at annual time steps. We used the Dynamic World near real-time global LULC dataset to compare how geospatial environmental models of water quality and hydrology respond to growing vs. non-growing season LULC for temperate watersheds of the eastern United States. Non-growing season LULC had more built area and less tree cover than growing season data due to seasonal impacts on classifications rather than actual LULC changes (e.g., quick construction or succession). In mixed-LULC watersheds, seasonal LULC classification inconsistencies could lead to differences in model outputs depending on the LULC season used, such as an increase in watershed nitrogen yields simulated by the Soil and Water Assessment Tool. Within reason, using separate calibration for each season may compensate for these inconsistencies, but lead to different model parameter optimizations. Our findings provide guidelines on the use of near real-time and high temporal resolution LULC in geospatial models.
Significant human health co-benefits of African emissions mitigation
Authors: Wells Christopher David , Kasoar Matthew , Ezzati Majid , Voulgarakis Apostolos
Published: September 2023

Abstract. Future African aerosol emissions, and therefore air pollution levels and health outcomes, are uncertain. Here, the range in the future impacts of African emissions in the Shared Socioeconomic Pathway (SSP) scenarios is studied, using the Earth System Model UKESM1 along with human health concentration-response functions. Using present-day demographics, annual deaths attributable to ambient particulate matter are estimated to be lower by 150,000 under stronger African aerosol mitigation by 2090, while those attributable to O3 are lower by 15,000. The particulate matter health benefits are realised predominantly within Africa, with the O3-driven benefits being more widespread – though still concentrated in Africa – due to the longer atmospheric lifetime of O3. These results demonstrate the important health co-benefits from future emissions mitigation in Africa.
The Modern Ocean Sediment Archive and Inventory of Carbon (MOSAIC): version 2.0
Authors: Paradis Sarah , Nakajima Kai , Van der Voort Tessa S. , Gies Hannah , Wildberger Aline , Blattmann Thomas M. , Bröder Lisa , Eglinton Timothy I.
Published: September 2023

Abstract. Marine sediments play a crucial role in the global carbon
cycle by acting as the ultimate sink of both terrestrial and marine organic
carbon. To understand the spatiotemporal variability in the content, sources,
and dynamics of organic carbon in marine sediments, a curated and harmonized
database of organic carbon and associated parameters is needed, which has
prompted the development of the Modern Ocean Sediment Archive and Inventory
of Carbon (MOSAIC) database (http://mosaic.ethz.ch/, last access: 26 July 2023; https://doi.org/10.5281/zenodo.8322094, Paradis, 2023; https://doi.org/10.5168/mosaic019.1, Van der Voort et al., 2019​​​​​​​). MOSAIC version 2.0 has expanded the
spatiotemporal coverage of the original database by >400 %
and now holds data from more than 21 000 individual sediment cores from
different continental margins on a global scale. Additional variables have
also been incorporated into MOSAIC v.2.0 that are crucial to interpret the
quantity, origin, and age of organic carbon in marine sediments globally.
Sedimentological parameters (e.g. grain size fractions and mineral surface
area) help understand the effect of hydrodynamic sorting and mineral
protection on the distribution of organic carbon, while molecular biomarker
signatures (e.g. lignin phenols, fatty acids, and alkanes) can help constrain
the specific origin of organic matter. MOSAIC v.2.0 also stores data on
specific sediment and molecular fractions, which provide further insight
into the processes that affect the degradation and ageing of organic carbon
in marine sediments. Data included within MOSAIC are continuously expanding,
and version control will allow users to benefit from updated versions while
ensuring reproducibility of their findings.
A 10 m resolution land cover map of the Tibetan Plateau with detailed vegetation types
Authors: Huang Xingyi , Yin Yuwei , Feng Luwei , Tong Xiaoye , Zhang Xiaoxin , Li Jiangrong , Tian Feng
Published: September 2023

Abstract. The Tibetan Plateau (TP) hosts a variety of vegetation types ranging from broadleaved and needle-leaved forests at the lower altitudes and mesic areas to alpine grassland at the higher altitudes and xeric areas. Accurate and detailed mapping of the vegetation distribution on TP is essential for an improved understanding of climate change effects on terrestrial ecosystems. Yet, existing land cover datasets of TP are either provided at a low spatial resolution or have insufficient vegetation types to characterize certain unique TP ecosystems, such as the alpine scree. Here, we produced a 10 m resolution TP land cover map with 12 vegetation classes and 3 non-vegetation classes for the year 2022 (referred as TP_LC10-2022) by leveraging state-of-the-art remote sensing approaches including the Sentinel-1 and Sentinel-2 imagery, environmental and topographic datasets, and 4 machine learning models using Google Earth Engine platform. Our dataset TP_LC10-2022 achieved an overall classification accuracy of 86.5 % with a Kappa coefficient of 0.854. By comparing with 4 existing global land cover products, TP_LC10-2022 showed significant improvements in terms of reflecting local-scale vertical variations in the southeast TP region. Moreover, we found that alpine scree occupied 13.99 % of the TP region which was ignored in existing land cover datasets, and that shrublands occupied 4.63 % of the TP region characterized by distinct forms of deciduous shrublands and evergreen shrublands largely determined by topography and missed in existing land cover datasets. Our dataset provides a solid foundation for further analyses which need accurate delineation of these unique vegetation types in TP. The TP_LC10-2022 dataset and the sample dataset are freely available at https://doi.org/10.5281/zenodo.8228112 and https://doi.org/10.5281/zenodo.8227942 (Huang et al., 2023a) respectively. Additionally, the classification map can be viewed through https://cold-classifier.users.earthengine.app/view/tplc10-2022.
A comparison of Eulerian and Lagrangian methods for vertical particle transport in the water column
Authors: Nordam Tor , Kristiansen Ruben , Nepstad Raymond , van Sebille Erik , Booth Andy M.
Published: September 2023

Abstract. A common task in oceanography is to model the vertical movement of particles
such as microplastics, nanoparticles, mineral particles, gas bubbles, oil
droplets, fish eggs, plankton, or algae. In some cases, the distribution of the
vertical rise or settling velocities of the particles in question can span a
wide range, covering several orders of magnitude, often due to a broad
particle size distribution or differences in density. This requires
numerical methods that are able to adequately resolve a wide and possibly
multi-modal velocity distribution. Lagrangian particle methods are commonly used for these applications. A
strength of such methods is that each particle can have its own rise or
settling speed, which makes it easy to achieve a good representation of a
continuous distribution of speeds. An alternative approach
is to use Eulerian methods, where the partial differential equations
describing the transport problem are solved directly with numerical methods.
In Eulerian methods, different rise or settling speeds must be represented
as discrete classes, and in practice, only a limited number of classes can be
included. Here, we consider three different examples of applications for a
water column model: positively buoyant fish eggs, a mixture of positively
and negatively buoyant microplastics, and positively buoyant oil droplets
being entrained by waves. For each of the three cases, we formulate a model
for the vertical transport based on the advection–diffusion equation with
suitable boundary conditions and, in one case, a reaction term. We give a
detailed description of an Eulerian and a Lagrangian implementation of these
models, and we demonstrate that they give equivalent results for selected
example cases. We also pay special attention to the convergence of the model
results with an increasing number of classes in the Eulerian scheme and with the
number of particles in the Lagrangian scheme. For the Lagrangian scheme, we
see the 1/Np convergence, as expected for a Monte Carlo method,
while for the Eulerian implementation, we see a second-order (1/Nk2)
convergence with the number of classes.
Land inclination controls CO2 and N2O fluxes, but not CH4 uptake, in a temperate upland forest soil
Authors: Gillespie Lauren M. , Triches Nathalie Y. , Abalos Diego , Finke Peter , Zechmeister-Boltenstern Sophie , Glatzel Stephan , Díaz-Pinés Eugenio
Published: September 2023

Abstract. Inclination and spatial variability in soil and litter properties influence
soil greenhouse gas (GHG) fluxes and thus ongoing climate change, but
their relationship in forest ecosystems is poorly understood. To elucidate
this, we explored the effect of inclination, distance from a stream, soil
moisture, soil temperature, and other soil and litter properties on
soil–atmosphere fluxes of carbon dioxide (CO2), methane (CH4), and
nitrous oxide (N2O) with automated static chambers in a temperate
upland forest in eastern Austria. We hypothesised that soil CO2
emissions and CH4 uptake are higher in sloped locations with lower soil
moisture content, whereas soil N2O emissions are higher in flat, wetter
locations. During the measurement period, soil CO2 emissions were
significantly higher on flat locations (p<0.05), and increased with
increasing soil temperature (p<0.001) and decreasing soil moisture
(p<0.001). The soil acted as a CH4 sink, and CH4 uptake
was not significantly related to inclination. However, CH4 uptake was
significantly higher at locations furthest away from the stream as compared
to at the stream (p<0.001) and positively related to litter weight
and soil C content (p<0.01). N2O fluxes were significantly
higher on flat locations and further away from the stream (p<0.05)
and increased with increasing soil moisture (p<0.001), soil
temperature (p<0.001), and litter depth (p<0.05). Overall,
this study underlines the importance of inclination and the resulting soil
and litter properties in predicting GHG fluxes from forest soils and
therefore their potential source-sink balance.
Deformation lines in Arctic sea ice: intersection angle distribution and mechanical properties
Authors: Ringeisen Damien , Hutter Nils , von Albedyll Luisa
Published: September 2023

Abstract. Despite its relevance for the Arctic climate and ecosystem, modeling sea-ice deformation, i.e., the opening, shearing, and ridging of sea ice, along linear kinematic features (LKFs) remains challenging, as the mechanical properties of sea ice are not yet fully understood. The intersection angles between LKFs provide valuable information on the internal mechanical properties, as they are linked to them. Currently, the LKFs emerging from sea-ice rheological models do not reproduce the observed LKF intersection angles, pointing to a gap in the model physics. We aim to obtain an intersection angle distribution (IAD) from observational data to serve as a reference for high-resolution sea-ice models and to infer the mechanical properties of the sea-ice cover.
We use the sea-ice vorticity to discriminate between acute and obtuse LKF intersection angles within two sea-ice deformation datasets: the RADARSAT Geophysical Processor System (RGPS) and a new dataset from the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) drift experiment. Acute angles dominate the IAD, with single peaks at 48∘±2 and 45∘±7. The IAD agrees well between both datasets, despite the difference in scale, time period, and geographical location. The divergence and shear rates of the LKFs also have the same distribution. The dilatancy angle (the ratio of shear and divergence) is not correlated with the intersection angle. Using the IAD, we infer two important mechanical properties of the sea ice: we found an internal angle of friction in sea ice of μI=0.66±0.02 and μI=0.75±0.05. The shape of the yield curve or the plastic potential derived from the observed IAD resembles a teardrop or a Mohr–Coulomb shape.
With these new insights, sea-ice rheologies used in models can be adapted or redesigned to improve the representation of sea-ice deformation.
GLAcier Feature Tracking testkit (GLAFT): a statistically and physically based framework for evaluating glacier velocity products derived from optical satellite image feature tracking
Authors: Zheng Whyjay , Bhushan Shashank , Van Wyk De Vries Maximillian , Kochtitzky William , Shean David , Copland Luke , Dow Christine , Jones-Ivey Renette , Pérez Fernando
Published: September 2023

Abstract. Glacier velocity measurements are essential to understand ice flow mechanics, monitor natural hazards, and make accurate projections of future sea-level rise. Despite these important applications, the method most commonly used to derive glacier velocity maps, feature tracking, relies on empirical parameter choices that rarely account for glacier physics or uncertainty. Here we test two statistics- and physics-based metrics to evaluate velocity maps derived from optical satellite images of Kaskawulsh Glacier, Yukon, Canada, using a range of existing feature-tracking workflows. Based on inter-comparisons with ground truth data, velocity maps with metrics falling within our recommended ranges contain fewer erroneous measurements and more spatially correlated noise than velocity maps with metrics that deviate from those ranges. Thus, these metric ranges are suitable for refining feature-tracking workflows and evaluating the resulting velocity products. We have released an open-source software package for computing and visualizing these metrics, the GLAcier Feature Tracking testkit (GLAFT).
Assessing the key concerns in snow storage: A case study for China
Authors: Wang Xing , Wang Feiteng , Ren Jiawen , Qin Dahe , Li Huilin
Published: September 2023

Abstract. Snow security plays a crucial role in ensuring the success of winter sports events and supporting the ski industry. One effective approach to enhancing snow reliability is through snow storage. Despite its potential benefits, the investigation of snow storage in China has been limited. To address this gap, we implemented snow storage covered with geotextile at two venues, namely the Big Air Shougang (BAS) in Beijing for the 2022 Winter Olympic Games and the National Biathlon Center (NBC) in Chongli for the 2022 Winter Paralympic Games, in response to extreme meteorological conditions. In order to assess the key concerns associated with snow storage: ablation (the process of snow loss) and snow quality, we introduced a fine snow pile monitoring system and utilized the SNOWPACK model. Our observations revealed that, by February 18, the snow pile at the BAS had lost 158.6 m3 of snow (equivalent to 6.7 % of the initial volume). Subsequently, the accelerated ablation was influenced by both meteorological conditions and the presence of a thin geotextile layer. Between January 16 and April 15, the snow pile at BAS experienced a total loss of 1242.9 m3 of snow (corresponding to 52.7 % of the original volume). With regard to snow quality, there were no significant variations modeled at the study sites, except for the upper part of the snow piles. It was noted that the evaporation of wet geotextile contributed to slowing down the ablation process. Consequently, we discourage the use of impermeable coverage schemes for snow storage. Instead, the thickness of the cover played a vital role in preserving the snow pile. At Beijing and Chongli, the 0.7 m and 0.4 m thick cover layers, respectively, were found to protect approximately half of the snow height over the summer season. Importantly, the snow quality evolution was consistent across different cover thicknesses. The findings of our study have implications for the ski industry in China, as they provide valuable insights into snow storage techniques and their impact on snow reliability.
Verifying QBlade-Ocean: A Hydrodynamic Extension to the Wind Turbine Simulation Tool QBlade
Authors: Behrens de Luna Robert , Perez-Becker Sebastian , Saverin Joseph , Marten David , Papi Francesco , Ducasse Marie-Laure , Bonnefoy Felicién , Bianchini Alessandro , Paschereit Christian-Oliver
Published: September 2023

Abstract. To realize the projected increase in world-wide demand for floating offshore wind, numerical simulation tools must capture the relevant physics with a high level of detail while being numerically efficient. This allows engineers to have better designs based on more accurate predictions of the design driving loads, potentially enabling an economic breakthrough. The existing generation of offshore wind turbines is reaching a juncture, where traditional approaches, such as the blade element momentum theory and actuator disc models, are becoming inadequate due to the increasing occurrence of substantial blade deflections. QBlade is a tool that includes a higher fidelity aerodynamic model based on lifting-line theory, capable of accurately modeling such scenarios. In order to enable the simulation of offshore conditions in QBlade, and to make use of this aerodynamic capability for novel offshore wind turbine designs, a hydrodynamic module called QBlade-Ocean was developed. In the present work, this module is validated and verified with two experimental campaigns and two state-of-the art simulation frameworks on three distinct floating offshore wind turbine concepts. The results confirm the implementation work and fully verify QBlade as a tool to be applied in offshore wind turbine simulations. Shortcomings reported by comparable tools in the non-linear response to irregular wave excitation are confirmed by QBlade and reiterate the need for further research in this field. A code-to-code comparison with the industry-designed Hexafloat concept highlights the coupled interactions on floating turbines that can lead to large differences in motion and load responses in otherwise identically behaving simulation frameworks.
Swinging Motion of a Kite with Suspended Control Unit Flying Turning Manoeuvres
Authors: Schelbergen Mark , Schmehl Roland
Published: September 2023

Abstract. The flexible membrane kite employed by some airborne wind energy systems carries a suspended control unit capable of inducing a characteristic pitch and roll swinging motion during sharp turning manoeuvres. This paper assesses how accurately a two-point kite model approximates this swinging motion with two approaches: approximated as a transition through steady-rotation states and solved dynamically. The kite model comprises the rigidly linked point masses of the control unit and wing and extends a discretised tether model. The motion of the wing point mass is constrained to a figure-of-eight manoeuvre from the flight data of an existing prototype. The associated swinging motion of the kite is inferred from the attitude of the rigid link element. The computed attitude is compared against the measurements of two sensors mounted to the wing, which record varying pitch angles during the turns. The pitch and roll angles computed with the two approaches are similar during the straight sections of the figure-of-eight manoeuvre and match the measured angles within three degrees. Contrastingly, the two approaches exhibit systematic differences during the turns. Since a two-point kite model resolves the roll, the lift force may tilt along with the kite to drive turns. Hence, intricate centripetal force modelling is avoided, as seen in a single-point kite model. Furthermore, the two-point kite model complements the aerodynamic model as it allows computing the angle of attack of the wing by resolving the pitch. These characteristics improve the generalization of the kite model with little additional computational effort.
Validation of aeroelastic dynamic model of Active Trailing Edge Flap system tested on a 4.3 MW wind turbine
Authors: Gamberini Andrea , Barlas Thanasis , Gomez Gonzalez Alejandro , Madsen Helge Aagaard
Published: September 2023

Abstract. Active Trailing Edge Flap (ATEF) is a promising technology for Wind Turbine load reduction and AEP improvement. However, this technology still needs extensive field validations to prove the reliability of the ATEF aeroelastic modeling codes. This article describes the validation of the dynamic response of the ATEF aeroelastic models developed for the BEM-based solvers HAWC2 and BHawC. The validation relied on field data from a 4.3 MW Wind Turbine (WT) equipped with an ATEFS on one blade and operating in normal power production. The validation consisted of three phases. At first, video recording of the ATEF deflection during WT operation allowed the tuning of the flap actuator model. In the second phase, the aerodynamic flap model was tuned and validated through the lift coefficient (Cl) transients measured with an innovative autonomous add-on measurement system placed on the blade in the middle of the spanwise extension of the ATEF. Finally, the aeroelastic ATEF model was validated based on the blade root moment (BMrM) transients over three months, from October to December 2020, with varying weather conditions. The validations showed that the simulations transient of Cl and MBrM are in good agreement with the corresponding measured transients, with a maximum difference for the blade-to-blade MBrM transients below 1 % of the mean blade load during flap activation and below 1.7 % during flap deactivation. An analysis of the possible root causes of these differences suggested additional measurements to improve the ATEF model tuning. The validation confirmed that the aeroelastic ATEF models provide a reliable and precise estimation of the impact of the flap on the wind turbine during flap actuation.
L’adaptation sérielle de Suburra, ou la transmédialité comme apport d’un regard éthique sur la société contemporaine
Authors: Rivière Jean-Marc , Canto Anne-Sophie
Published: September 2023

En 2013, Giancarlo De Cataldo et Carlo Bonini font paraître le roman Suburra. Entre 2017 et 2020, la plateforme de streaming Netflix diffuse sa première série originale italienne, Suburra. La serie, libre adaptation du livre éponyme. Dirigées par Michele Placido, Andrea Molaioli et Giuseppe Capotondi, les trois saisons se caractérisent par un scénario dense qui fait s’entremêler des intrigues complexes autour d’une triple polarisation criminelle : les intérêts de trafiquants romains, de figures politiques locales et de hauts dignitaires du Vatican s’y trouvent ainsi inextricablement mêlés autour de l’acquisition de terrains à Ostia, symboles géographiques d’un pouvoir hégémonique. Cet article montre comment, à travers les choix narratifs opérés par ses auteurs, l’adaptation sérielle de Suburra constitue une version plus riche et aboutie, du point de vue éthique, que l’œuvre littéraire originelle. En effet, la série remet en cause la cristallisation des représentations qui caractérisait le roman et enfermait les personnages dans une dichotomie bien / mal, autour de laquelle s’articulait chacune de leurs actions. Bouleversant l’agencement systémique de la diégèse originelle, la série travaille avec subtilité les rapports interpersonnels et institutionnels, pour ouvrir sur une narration plus humaine et éthique de la criminalité et du monde contemporain.
Некоторые методологические вопросы преподавания попджазового пения
Authors: Nersisyan Larianna
Published: September 2023

The purpose of the article is to consider the methodological tasks of teaching the art of pop-jazz singing at the present stage, related to the performing technical apparatus of the vocalist, starting from the beginning stage and through the formation and development the student's voice. Tasks: methodological approaches based on pedagogical experience, which this article is devoted to, are presented. The author notes that students start classes at different ages, so professional education and teaching methods in music universities should contribute to this process. The task of the teacher is also noted - to be attentive and provide an individual approach to each student in accordance with his abilities, level of development, and of course, take into account style preferences - pop or jazz music.
Zakon Ducha Świętego de Saxia w Polsce średniowiecznej
Authors: Antosiewicz Klara
Published: September 2023

Niniejszy artykuł został poświęcony zakonowi Ducha Św. w Polsce średniowiecznej. Jako granicę końcową przyjęto rok 1528, ponieważ w tym czasie na skutek pożaru Krakowa spaliły się kościoły duchackie (Św. Ducha i Św. Krzyża), zabudowania szpitalne i klasztorne oraz całe archiwum. Po odbudowaniu spalonych budynków, zaszła zmiana w organizacji szpitala, która miała znaczenie nie tylko dla domu krakowskiego, ale dla wszystkich klasztorów św. Ducha w Polsce. Dla ogólnych wiadomości o zakonie Ducha Św. de Saxia skrótowo omówiono miejsce, czas oraz cel jego powstania. Następnie ukazano problemy takie jak: założenie domów duchackich w Polsce, uposażenie poszczególnych klasztorów, organizacja i życie w klasztorach duchaków w świetle reguły, wreszcie działalność duchaków w Polsce.
Development of a Plate Conveyor with Linear Engines
Authors:   NPLC «Karaganda Buketov University», Kazakhstan, Karaganda, University Street, 28,, MOLDABAEV Baurzhan , ROZHKOV Alexander ,   NPJSC «Abylkas Saginov Karaganda Technical University», Kazakhstan, Karaganda, N. Nazarbayev Avenue, 56,, BALABAEV Oyum ,   NPJSC «Abylkas Saginov Karaganda Technical University», Kazakhstan, Karaganda, N. Nazarbayev Avenue, 56,, GORSHKOVA Nina ,   Belgorod State Technological University named after V.G. Shukhov, Russia, Belgorod, Kostyukov Street, 46,
Published: September 2023

t. The results of research work carried out by the author in the field of improving the plate conveyor are presented. The development refers to conveyors with endless traction elements, or rather plate conveyors, designed to work in open mining conditions. The development allows to significantly reduce dynamic loads and increase the length of the plate conveyor in one line, due to the absence of sprockets and traction chain. The work describes the principle of the developed plate conveyor with linear engines. The technical result of the proposed invention is to reduce dynamic loads and increase the length of the plate conveyor in one line. This technical result is achieved by the fact that the frame of the plate conveyor is fixed to the stators of linear engines, and the rotors of linear engines are fixed to the axis of running rollers with a rebord
Regulatory Support in the Field of Designing Soil Ground Regarding to Freezing in Domestic Construction
Authors:   NPJSC «L.N. Gumilyov Eurasian National University», Kazakhstan, Astana, Satpayev Street, 2,, SHAKHMOV Zhanbolat , UTEPOV Yelbek ,   NPJSC «L.N. Gumilyov Eurasian National University», Kazakhstan, Astana, Satpayev Street, 2,, TLEULENOVA Gulshat ,   NPJSC «L.N. Gumilyov Eurasian National University», Kazakhstan, Astana, Satpayev Street, 2,, KHAFIZ Kairat ,   NPJSC «L.N. Gumilyov Eurasian National University», Kazakhstan, Astana, Satpayev Street, 2,
Published: September 2023

Information is provided on a new regulatory system in the field of designing soil foundations in housing construction in Kazakhstan. The main goal is to show the difference between the old and new regulatory systems. The main conclusions from the regulations for the design of the soil base in the area of the influence of freezing-thawing on the stability of soil bases and foundations are presented. For the study, methods of analytical comparison of the new harmonized standards SP RK EN (Harmonized Eurocodes) with the old previous SNiPs standards were used. According to the new internalized standards, the risk of frost heaving can be assessed according to the classification characteristics of the soil or laboratory tests of test specimens in their natural state. The authors give in the work formulas for determining the stability of foundations with tangential and normative heaving, the depth of freezing of soil foundations. According to the analysis and research carried out, the regulatory prerequisites for determining frost heave soils were determined