Miracle-dz/UniFAR-FTUs huggingface dataset:
Avaliação do Comportamento Dinâmico de Usinas Hidrelétricas Durante um Black Start

The restoration of the electrical networks after a blackout is carried out from the isolated operation of the power generation plants. To maintain voltage and frequency levels at appropriate values for the isolated operation of hydroelectric plants, the behavior of the electrical network depends on the response of the controllers, the dynamics of the hydraulic turbine and the generator. Due to the low inertia of an isolated generator and the slow dynamics of the hydraulic turbine, the isolated network is more susceptible to violations of the electricity quality levels in relation to the main network. Therefore, this paper analyzes the behavior of hydroelectric power stations in isolated operation considering the connection of the loads during the restoration for different dynamic characteristics of the synchronous generator and the hydraulic turbine. Resumo: O restabelecimento das redes elétricas após um apagão é realizado a partir da operação isolada das centrais de geração de energia. Para conservar os níveis de tensão e frequência em valores adequados da operação isolada das usinas hidrelétricas, o comportamento da rede elétrica depende da resposta dos controladores, da dinâmica da turbina hidráulica e do gerador. Devido à baixa inércia de um gerador isolado e da dinâmica lenta da turbina hidráulica, a rede isolada fica mais susceptível a violações dos níveis de qualidade da energia elétrica em relação a rede principal. Diante destas constatações, este artigo analisa o comportamento de centrais hidrelétricas em operação isolada considerando a conexão das cargas durante o restabelecimento para diferentes características dinâmicas do gerador síncrono e da turbina hidráulica.
Autofocusing based on cosine similarity in dual-wavelength digital holographic microscopy

An autofocusing method based on cosine similarity in dual-wavelength digital holographic microscopy is proposed. In our experiments, red and green lasers are employed for illumination and the generated holograms are recorded by a color camera. During the refocusing process, the reconstructed optical field near the focus plane contains more regular features than the one on the defocus plane. Moreover, due to the wavelength dependency of the diffraction process, the further away from the focus plane, the greater the difference in the reconstructed optical fields from the two wavelengths. Therefore, the focus plane can be determined by finding the maximum value of the cosine similarity between the amplitude vectors from the reconstructed optical fields of the two wavelengths. Simulation and experimental results demonstrate the effectiveness of the proposed method in off-axis dual-wavelength digital holographic microscopy for shape measurement.
Formation of Silver Nanowires Through a Sandwiched Reduction Process

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Platform Governance and the Rural-Urban Divide: Sellers’ Responses to Design Change

Platform companies use design changes to govern their sellers. The success of a design change depends on sellers’ responses, which are influenced by the local environment. Our study focuses on an important aspect of the local environment – rural versus urban. Using data from a leading e-commerce platform, we find that relative to urban sellers, rural sellers were particularly poor at adjusting to a major design change. This also resulted in a persistent performance gap. We attribute these misaligned responses to rural sellers’ lack of local access to rich information. This study shows that sellers’ local heterogeneity generates equivocal responses and carries unintended consequences for platform governance. It also enriches our understanding of digital inequality in the platform economy.
Microbiological and molecular monitoring for bovine tuberculosis in the Polish population of European bison (Bison bonasus).

INTRODUCTION AND OBJECTIVE In recent years, bovine tuberculosis (BTB) has become one of the major health hazards facing the European bison (EB, Bison bonasus), a vulnerable species that requires active protection, including regular and effective health monitoring. Monitoring of zoonotic disease in wildlife is also an important part of public health protection. The aim of the study was to determine whether BTB still influences the EB population in Poland. MATERIAL AND METHODS During 2017-2019, mandibular, retropharyngeal and mediastinal lymph nodes were collected from 90 EB during post-mortem examination, and then cultivated on Lowenstein-Jensen and Stonebrink media. Isolated strains were subjected to molecular analysis to determine the species, spoligotype and MIRU-VNTR pattern. RESULTS Lesions were found in lymph nodes originating from eight EB (8.89%). Positive microbiological cultures for mycobacteria were obtained in samples from six (6.67%) EB. The isolated strains were identified as Mycobacterium caprae (material from four EB) and atypical mycobacteria (material from two EB). For M. caprae strains spoligotype M. bovis 4_CA 1600 was identified and the MIRU-VNTR pattern was identified as 345751355413232. CONCLUSIONS It is recommended that this potentially dangerous disease should be monitored in EB via a comprehensive strategy based on a combination of microbiological and molecular methods. Such monitoring will protect the health of both animals and humans.
Physical properties and morphology of films prepared from microfibrillated cellulose and microfibrillated cellulose in combination with amylopectin

Two types of microfibrillated cellulose (MFC) were prepared using either a sulfite pulp containing a high amount of hemicellulose (MFC 1) or a carboxymethylated dissolving pulp (MFC 2). MFC gels were then combined with amylopectin solutions to produce solvent-cast MFC-reinforced amylopectin films. Tensile testing revealed that MFC 2-reinforced films exhibited a more ductile behavior and that MFC 1-reinforced films had higher modulus of elasticity (E-modulus) at MFC loadings of 50 wt % or higher. Pure MFC films had relatively low oxygen permeability values when data were compared with those for a variety of other polymer films. MFC 1 and MFC 2 films had similar opacity but differences in appearance which were attributed to the presence of some larger fibers and nanofiber agglomerates in MFC 2. Field emission scanning electron microscopy (FE-SEM) and atomic force microscopy (AFM) were used to illustrate the morphology of MFC nanofibers in pure films and in an amylopectin matrix.
Is biocontrol efficacy rather driven by the plant or the antagonist genotypes? A conceptual bioassay approach

In the new range, invasive species lack their specialist co-evolved natural enemies, which then might be used as biocontrol agents. Populations of both a plant invader in the introduced range and its potential biocontrol agents in the native range may be genetically differentiated among geographically distinct regions. This, in turn, is expected to affect the outcome of their interaction when brought together, and by this the efficacy of the control. It further raises the question, is the outcome of such interactions mainly driven by the genotype of the plant invader (some plant genotypes being more resistant/tolerant to most of the antagonist genotypes), or by the antagonist genotype (some antagonist genotypes being more effective against most of the plant genotypes)? This is important for biocontrol management, as only the latter is expected to result in more effective control, when introducing the right biocontrol agent genotypes. In a third scenario, where the outcome of the interaction is driven by a specific plant by antagonist genotype interactions, an effective control will need the introduction of carefully selected multiple antagonist genotypes. Here, we challenged in a complete factorial design 11 plant genotypes (mainly half-siblings) of the invasive Ambrosia artemisiifolia with larvae of eight genotypes (full-siblings) of the leaf beetle Ophraella communa, a potential biocontrol insect, and assessed larval and adult performance and leaf consumption as proxies of their expected impact on the efficacy of biological control. Both species were collected from several locations from their native (USA) and introduced ranges (Europe and China). In summary, we found O. communa genotype to be the main driver of this interaction, indicating the potential for at least short-term control efficacy when introducing the best beetle genotypes. Besides the importance of investigating the genetic structure both among and within populations of the plant invader and the biocontrol agent during the pre-release phase of a biocontrol program, we advocate integrating such bioassays, as this will give a first indication of the probability for an – at least – short- to mid-term efficacy when introducing a potential biocontrol agent, and on where to find the most efficient agent genotypes.
Adsorption Mechanism of Human Serum Albumin on a Reversed-Phase Support by Kinetic, Chromatographic, and FTIR Methods

Abstract The kinetic behavior of human serum albumin (HSA) adsorbed on a reversed-phase support was studied. With a phosphate buffer eluent (pH 7.4), the sharp elution front characterizes a fast kinetic adsorption process with a high apparent adsorption rate. In presence of 20% acetonitrile added to the eluent the apparent adsorption rate is about 60 times as low as that found for the first adsorption step in pure buffer. The largest column capacity is found with 20% acetonitrile in buffer; for larger organic solvent contents, a decrease of both the apparent adsorption rate and the column capacity are observed with increasing amounts of acetonitrile in the buffer. In order to better understand the chromatographic behavior of HSA on this type of support, we studied the stuctural infrared characteristics of the protein in solution. Fourier transform infrared spectra show that acetonitrile induces some structural changes of the protein in solution and competes with alkyl chains for the interaction with HSA explaining the slow adsorption kinetic process observed in presence of the organic solvent in the eluent. The more compact protein structure found with 20% acetonitrile is correlated with the larger amount of protein adsorbed at this aqueous buffer–organic solvent composition.
Irrigation Water Demand Sensitivity to Climate Variability Across the Contiguous United States

Climate variability is an important driver of irrigation water use in many regions. Efforts to anticipate climate change impacts on future water availability can benefit from understanding how irrigation water demand has responded to these drivers to date. Here we apply satellite‐derived data, meteorological reanalysis, an advanced land surface model, and available state‐level reports to quantify irrigation demand sensitivities to temperature and precipitation across the Contiguous United States, for the period of 2002–2017. As expected, strong negative correlations are found between precipitation and irrigation withdrawals, both simulated and reported. Temperature sensitivities, however, vary by region and season, as do the interactive effects of temperature and precipitation on irrigation. Climate‐induced irrigation variability is largest in transitional climate zones. These transitional zones are generally separate from the regions where rates of irrigation withdrawals are greatest, such that climate‐induced variability in irrigation demand represents a water resource consideration that is distinct from chronic overpumping.
Predicting Response to Total Neoadjuvant Treatment (TNT) in Locally Advanced Rectal Cancer Based on Multiparametric Magnetic Resonance Imaging: A Retrospective Study

Purpose To investigate the potential value of magnetic resonance imaging (MRI) in predicting response relevance to total neoadjuvant treatment (TNT) in locally advanced rectal cancer. Methods We analyzed MRI of 71 patients underwent TNT from 2015 to 2017 retrospectively. We categorized the response of TNT as CR (complete response) vs non-CR, and high vs moderate vs low sensitivity. Logistic regression analysis was used to identify the best predictors of response. Diagnostic performance was assessed using receiver operating characteristic curve analysis. Results Post-ICT (induction chemotherapy) ∆TL (tumor length), post-CRT (concurrent chemoradiotherapy) ∆LNN (the numbers of lymph node metastases), post-CCT (consolidation chemotherapy) ∆SDWI (maximum cross-sectional area of tumor on diffusion-weighted imaging), post-CCT ADCT (the mean apparent diffusion coefficient values of tumor) and post-CCT ∆LNV (volume of lymph node) were the best CR predictors. Post-ICT ∆TL, post-CRT EMVI (extramural vascular invasion) and post-CCT ∆ST2 (S on T2-weight) were the best significant factors for high sensitivity. Conclusion Post-ICT ∆TL may be an early predictor of CR and high sensitivity to TNT. Dynamic analysis based on MRI between baseline and post-CCT could provide the most valuable prediction of CR. The grouping modality of CR vs non-CR may be more suitable for treatment response prediction than high vs moderate vs low sensitivity.
Economic effects of ambient air pollution on consumer shopping behaviors

In this paper, we address why the lack of research on the indirect economic effect of air pollution arises and explored the desirable features of data that allow such examination. In light of scanner panel data on individual transactions from a region with significant fluctuations in the level of particulate matters, our empirical investigation reveals that the economic effect of air pollution is statistically and economically significant through the disruption on consumption behaviors. Our discussion on the essential features of the data for the systematic analysis on the economic effect of air pollution and empirical evidence based on such data provides ample guidance for the future research.
“We Take EVERYONE”: Perceptions of External Assessment and Accountability at the Community College

ABSTRACT Assessment, accountability, and transparency represent a greater focus than ever in higher education. Community colleges are not exempt from these requirements, though they are overlooked in the creation of state and national assessment instruments. Therefore, we designed and distributed the Perceptions of Community College Assessment (PCCA) survey, a national mixed methods survey of the perceptions of community college employees (N = 198) who administer or assist in the administration of state and federal community college assessments. Respondents reported low confidence in the accuracy of existing assessment measures used at the state (e.g., performance-based funding measures) and federal (e.g., the College Scorecard) levels. Respondents believed much of the work of community colleges is not captured in existing external assessments which can lead to inaccurate educational data overall. Based on our findings, we recommend that existing federal and state assessment measures be reevaluated, and the classifications of community colleges be expanded to reflect the realities and complexities of modern day community colleges. We further recommend that community college leaders be provided an opportunity to actively assist in the creation of new measures and classifications based on their in the field expertise. Through this research, we seek to educate state and federal decision makers and to provide a tool for community college leaders to advocate for policy and practical changes in the accountability systems used to assess community colleges.
Síndrome de Baggio-Yoshinari: uma revisão da literatura

1. Acadêmicos de Medicina da Universidade Federal do Vale do São Francisco – UNIVASF, Colegiado de Medicina Paulo Afonso, BA. ORCID: Silva VS https://orcid.org/0000-0001-8937-3812; Santana MM https://orcid.org/0000-0002-2815-6934; Gomes DLX https://orcid.org/0000-0003-0271-638X; Medeiros EP https://orcid.org/0000-0002-8264-7101. E-mail: vit.santosds@gmail.com, mmarquess800@gmail.com, douglaslxg@gmail.com, emersonpaz16@outlook.com. 2. Professora, Doutora Titular da Universidade Federal do Vale do São Francisco – UNIVASF, Colegiado de Medicina, Paulo Afonso, BA. ORCID: Cordeiro MF https://orcid.org/0000-0001-8103-1076; Takenami I https://orcid.org/0000-0001-5660-7766. E-mail: marina.ferraz@univasf.edu. br, iukary.takenami@univasf.edu. br. Endereço para correspondência: Iukary Takenami. Rua da Alvorada, S/N, General Dutra, Paulo Afonso, BA. CEP: 48680-190. E-mail: iukary.takenami@univasf.edu. br. RESUMO: A Síndrome de Baggio-Yoshinari (SBY) é uma zoonose emergente brasileira que apresenta semelhanças com a doença de Lyme (DL). Ambas são causadas pela espiroqueta Borrelia burgdorferi sensu lato, transmitida para hospedeiros vertebrados por meio de picadas de carrapato. Contudo, a SBY diverge da DL em alguns aspectos clínicos e imunológicos. No presente estudo, objetivou-se realizar uma revisão integrativa da literatura sobre a SBY, abordando aspectos amplos como história da doença, epidemiologia, manifestações clínicas, aspectos imunológicos, diagnóstico e tratamento. Foi realizado um levantamento bibliográfico nas bases de dados PubMed/ MEDLINE, SciELO, Science Direct, LILACS e Bireme, de onde foram extraídos 25 artigos científicos para análise, sem delimitação temporal. Evidenciou-se que a grande diversidade biológica e geográfica do país contribuiu para a ocorrência de modificações na B. burgdorferi que, possivelmente, resultaram nas particularidades da SBY. A bactéria, auxiliada por proteínas da saliva do carrapato, consegue transpor as barreiras imunológicas do hospedeiro para infectá-lo. Inicialmente, o diagnóstico baseiase na presença de oligoartrite, podendo também estar presentes sintomas neurológicos, dermatológicos, cardíacos ou oculares, seguindo-se com a avaliação de outros critérios clínicos e laboratoriais. O tratamento consiste na utilização de doxiciclina ou amoxicilina associada a outros fármacos de acordo com as manifestações clínicas. Nota-se que a SBY, apesar de pouco estudada, configura-se como uma doença emergente que necessita de maior atenção por parte dos setores de saúde pública e da comunidade científica para melhor caracterização do quadro clínico e, consequente realização de diagnóstico precoce, evitando acometimentos crônicos aos pacientes.
Collaborative qualitative research at scale: Reflections on 20 years of acquiring global data and making data global

A 5‐year project to study scientific data uses in geography, starting in 1999, evolved into 20 years of research on data practices in sensor networks, environmental sciences, biology, seismology, undersea science, biomedicine, astronomy, and other fields. By emulating the “team science” approaches of the scientists studied, the UCLA Center for Knowledge Infrastructures accumulated a comprehensive collection of qualitative data about how scientists generate, manage, use, and reuse data across domains. Building upon Paul N. Edwards's model of “making global data”—collecting signals via consistent methods, technologies, and policies—to “make data global”—comparing and integrating those data, the research team has managed and exploited these data as a collaborative resource. This article reflects on the social, technical, organizational, economic, and policy challenges the team has encountered in creating new knowledge from data old and new. We reflect on continuity over generations of students and staff, transitions between grants, transfer of legacy data between software tools, research methods, and the role of professional data managers in the social sciences.
Mapping the Food Festivals and Sustainable Capitals: Evidence from Poland

This study is one of the first attempts to identify and explain the location of food festivals in the context of locally embedded capitals. A multidimensional spatial model was developed and a typology using the k-means method was carried out to evaluate the mapping of 64 food festivals organized in various locations in Poland. With reference to Bourdieu’s concept, the economic, social, cultural, symbolic, and tourism capitals rooted in the local environment were examined and compared with the location of festivals. From the theoretical point of view, this study extends the theory of capital to include the new category of tourism capital, which allows better understanding of the economic effects of festivals. It is the missing element of the circular mechanism of capital conversion. Our study shows that food festivals in Poland are held mainly in large cities and their neighboring municipalities rather than in peripheral rural areas. We indicate that the urban areas have a higher level of capitals and sustainability of capitals for food festivals than rural areas. The conducted research shows that the economic effect of food festivals is stronger in locations with high tourism capital. The proposed model is universal and can be used to analyze the impact of various festivals on capital conversion and local development.
Improved numerical model of the arterial wall applied for simulations of stent deployment within patient-specific coronary arteries

Tijana Djukic1,2*, Igor Saveljic1,2, Gualtiero Pelosi3, Oberdan Parodi3, Nenad Filipovic1,4 1Bioengineering Research and Development Center, BioIRC, Kragujevac, Serbia 2University of Kragujevac, Institute for Information Technologies, Kragujevac, Serbia 3Institute of Clinical Physiology, National Research Council, Pisa, Italy 4University of Kragujevac, Faculty of Engineering, Department of Applied Mechanics and Automatic Control, Kragujevac, Serbia
Electronic properties and 4f → 5d transitions in Ce-doped Lu2SiO5: a theoretical investigation

The electronic properties and the 4f → 5d transitions of the dopant Ce3+ ions located at the two crystallographic lutetium sites of Lu2SiO5 (LSO) are investigated using the hybrid density functional theory (DFT) with the HSE06 functional and the wavefunction-based embedded cluster methods, respectively. The HSE06 calculations give a band gap of 6.35 eV for LSO, which agrees well with the reported experimental values between 6.4 and 6.8 eV. It is found that Ce3+ prefers strongly to occupy the seven-coordinated (Lu1) site over the six-coordinated (Lu2) one. The energy gaps between the occupied Ce3+ 4f band and the valence band maximum of the host are predicted to be 2.81 and 3.07 eV for CeLu1 and CeLu2 substitutions, respectively, which are close to the experimental data of 2.6–2.9 eV. Based on the wavefunction-based CASSCF/CASPT2 embedded cluster calculations for the energies of the Ce3+ 4f1 and 5d1 levels, the experimentally observed 4f → 5d transition bands are identified in association with the two substitutions. The predicted transition energy and intensity patterns for CeLu1 substitution are in fairly good agreement with those of the experimental absorption spectrum. The variations of the two lowest 4f → 5d transition energies with the substitutions are finally discussed in terms of the changes of the centroid-energy difference and the crystal-field splitting with the local coordination geometries.