bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization of inverse-Prandtl of Dissipation in standard k-ε Turbulence Model for Predicting Flow Field of Crossflow Turbine
Authors: Candra Damis Widiawaty  , Ahmad Indra Siswantara  , Gun Gun R Gunadi  , Mohamad Arif Andira  , Budiarso  , Muhammad Arif Budiyanto  , M. Hilman Gumelar Syafei  , Dendy Adanta
Published: January 2022

Despite the successful use of the Standard model in simulating turbulent flow for many industrially relevant flows, the model is still less accurate for a range of important problems, such as unconfined flows, curved boundary layers, rotating flows, and recirculating flows. As part of the authors’ effort to extend the model applicability and reliability, this paper aims to study the effects of diffusivity parameter called the turbulent Prandtl number of dissipation rate () on the Standard model performance for predicting recirculating flow in a crossflow water turbine. The value of this parameter was varied from 0.5 to 1.5 in the CFD simulations, and the results were compared to the more sophisticated model, namely the RNG , which has been first qualitatively validated by an experimental result. In addition, the parameter value was also adjusted using the Multi-Linear Regression (MLR) method ranging from 0.42 to 1.5 to complement the CFD simulations. It was observed that reducing the value is effective in minimizing the average deviation of the turbulence properties concerning the RNG model. However, the adjusted model still faces difficulty in accurately predicting the pressure and velocity field. Based on this result, adjusting the constant in the Standard turbulence model has the potential to improve the model performance for modelling recirculating flow in terms of the turbulence properties, but still needs further investigation for the flow properties.
Effect of Ribs as Passive Control on Base Pressure at Sonic Mach Numbers
Authors: Ambareen Khan  , Nurul Musfirah Mazlan  , Ervin Sulaeman
Published: January 2022

Passive control is a method used to control the base pressure of the convergent-divergent nozzle for high speed vehicles. The passive control contributes significant reduction of base pressure which mainly depending on many factors such as number of ribs, flow Mach number and rib’s size. The flow behaviour inside the nozzle at the respected factors still unknown. Therefore, this study aims to assess the effect of ribs in a suddenly expanded flow to control the base pressure at sonic Mach numbers. The study is performed using ANSYS Fluent. The flow expands in a duct with 18 mm diameter and 108 mm length. The ribs have aspect ratios of 3:1 to 3:3 which were fixed to the duct circumferentially. The position of the rib varies from 1D (duct diameter) to 4D and having different aspect ratios. The level of expansion varies from 1.5 to 5 while the rib is fixed at a 3:3 aspect ratio. The variation of pressure and velocity contours of the flow inside the nozzle are presented. The simulation analysis indicates that the flow expansion with the presence of ribs considerably improves the base pressure. It is concluded that at the flow with sonic Mach number, the rib with a 3:3 aspect ratio located at 4D has shown the highest improvement in base pressure.
Analysis of Sales Growth of Chinese Car Brands in Russia in 2019-2020
Authors: Ivanchina A. A.
Published: January 2022

The article provides an overview of the state of the Russian market for new passenger cars and also considers the dynamics of sales volumes in this market for the period from 2017 to August 2021. Special attention is paid to representatives of the Chinese brands Geely, Haval, Chery in Russia, which show positive dynamics in sales growth in the falling Russian market for new passenger cars. The article will be of interest to a representative of the automotive industry.

The analysis showed that in a falling market, you can increase your share due to the right strategic decisions in the field of marketing. Since the companies do not disclose their plans to "conquer the world", we relied on open sources (official sites) and analyzed the already committed actions of representatives of Chinese brands, comparing them with the results achieved. The method of work is a systematic approach to the statistical analysis of the dynamics and structure of the Russian passenger car market.
Introduction: Europe’s Southern Question
Authors: McGuire Valerie
Published: January 2022

Since the turn of the 21st century, the narrative that Italy never had a significant colonial empire—or that when it did during the late 1930s, it was ‘soft’ or ‘goodhearted’ in comparison to the forged by its Nazi allies—has been significantly challenged by historians and in critical studies of modern Italy. However, what is often underestimated in these studies is the way that empire was intimately linked to the project of the nation-state itself and the ways in which Italian national identity has frequently drawn upon the image of the Mediterranean Sea to efface the fragmentary nature and precarity of its national unity. In comparison with the Southern Question, what has been the dominant paradigm for studying the Italian nation-state—including its recent uneasy reception of immigrants—examining modern Italy from the de-centred perspective of its colonial empire in the Mediterranean, provides a richer understanding of how Italian culture has strived to imagine itself as cosmopolitan and as a participant in European modernity. While this book is largely a case study of the culture and politics of Italy’s colonial mandate in the Aegean, it also offers a critical revaluation of how the project of colonial modernity has impacted Europe’s Southern frontier.
ANALYZING PUBLIC TRAVEL DEMAND BY A FUZZY ANALYTIC HIERARCHY PROCESS MODEL FOR SUPPORTING TRANSPORT PLANNING
Authors: Alkharabsheh Ahmad , Moslem Sarbast , Duleba Szabolcs
Published: January 2022

Travel demand plays an essential role in strategic transport planning. Generally, experts use either discrete methods, e.g. discrete choice models or simulation, e.g. activity-based models to estimate demand in transportation. This paper offers a different solution; instead of using the traditional approach, the demand is considered as a Multi Criteria Decision Making (MCDM) problem and surveying the citizens’ preferences provides the results for decision support. Public transport demand depends on two main issues, quality and price of the transportation. In a hierarchical model, both issues have been integrated and the well-proven Analytic Hierarchical Process (AHP) method has been applied in the current research. Further, fuzzyfication of the scores have also been conducted because of the citizen evaluator pattern. The fuzzy-AHP (FAHP) model has been tested in a real-world situation with the case study of Amman (Jordan).
Elemental Abundances of nearby M Dwarfs Based on High-resolution Near-infrared Spectra Obtained by the Subaru/IRD Survey: Proof of Concept
Authors: Ishikawa Hiroyuki Tako , Aoki Wako , Hirano Teruyuki , Kotani Takayuki , Kuzuhara Masayuki , Omiya Masashi , Hori Yasunori , Kokubo Eiichiro , Kudo Tomoyuki , Kurokawa Takashi , Kusakabe Nobuhiko , Narita Norio , Nishikawa Jun , Ogihara Masahiro , Ueda Akitoshi , Currie Thayne , Henning Thomas , Kasagi Yui , Kolecki Jared R. , Kwon Jungmi , Machida Masahiro N. , McElwain Michael W. , Nakagawa Takao , Vievard Sebastien , Wang Ji , Tamura Motohide , Sato Bun’ei
Published: January 2022

Detailed chemical analyses of M dwarfs are scarce but necessary to constrain the formation environment and internal structure of planets being found around them. We present elemental abundances of 13 M dwarfs (2900 < T
eff < 3500 K) observed in the Subaru/IRD planet search project. They are mid- to late-M dwarfs whose abundance of individual elements has not been well studied. We use the high-resolution (∼70,000) near-infrared (970–1750 nm) spectra to measure the abundances of Na, Mg, Si, K, Ca, Ti, V, Cr, Mn, Fe, and Sr by the line-by-line analysis based on model atmospheres, with typical errors ranging from 0.2 dex for [Fe/H] to 0.3–0.4 dex for other [X/H]. We measure radial velocities from the spectra and combine them with Gaia astrometry to calculate the Galactocentric space velocities UVW. The resulting [Fe/H] values agree with previous estimates based on medium-resolution K-band spectroscopy, showing a wide distribution of metallicity (−0.6 < [Fe/H] < +0.4). The abundance ratios of individual elements [X/Fe] are generally aligned with the solar values in all targets. While the [X/Fe] distributions are comparable to those of nearby FGK stars, most of which belong to the thin-disk population, the most metal-poor object, GJ 699, could be a thick-disk star. The UVW velocities also support this. The results raise the prospect that near-infrared spectra of M dwarfs obtained in the planet search projects can be used to grasp the trend of elemental abundances and the Galactic stellar population of nearby M dwarfs.
Mapping the Diversity of Galaxy Spectra with Deep Unsupervised Machine Learning
Authors: Teimoorinia Hossen , Archinuk Finn , Woo Joanna , Shishehchi Sara , Bluck Asa F. L.
Published: January 2022

Modern spectroscopic surveys of galaxies such as MaNGA consist of millions of diverse spectra covering different regions of thousands of galaxies. We propose and implement a deep unsupervised machine-learning method to summarize the entire diversity of MaNGA spectra onto a 15 × 15 map (DESOM-1), where neighboring points on the map represent similar spectra. We demonstrate our method as an alternative to conventional full spectral fitting for deriving physical quantities and full probability distributions much more efficiently than traditional resource-intensive Bayesian methods. Since spectra are grouped by similarity, the distribution of spectra onto the map for a single galaxy, i.e., its “fingerprint,” reveals the presence of distinct stellar populations within the galaxy, indicating smoother or episodic star formation histories. We further map the diversity of galaxy fingerprints onto a second map (DESOM-2). Using galaxy images and independent measures of galaxy morphology, we confirm that galaxies with similar fingerprints have similar morphologies and inclination angles. Since morphological information was not used in the mapping algorithm, relating galaxy morphology to the star formation histories encoded in the fingerprints is one example of how the DESOM maps can be used to make scientific inferences.
Locating Red Supergiants in the Galaxy NGC 6822
Authors: Dimitrova Tzvetelina A. , Neugent Kathryn F. , Massey Philip , Levesque Emily M.
Published: January 2022

Using archival near-IR photometry, we identify 51 of the K-band brightest red supergiants (RSGs) in NGC 6822 and compare their physical properties with stellar evolutionary model predictions. We first use Gaia parallax and proper motion values to filter out foreground Galactic red dwarfs before constructing a J–K versus K color–magnitude diagram to eliminate lower-mass asymptotic giant branch star contaminants in NGC 6822. We then cross match our results to previously spectroscopically confirmed RSGs and other NGC 6822 content studies and discuss our overall completeness, concluding that radial velocity alone is an insufficient method of determining membership in NGC 6822. After transforming the J and K magnitudes to effective temperatures and luminosities, we compare these physical properties with predictions from both the Geneva single-star and Binary Population and Spectral Synthesis (BPASS) single and binary-star evolution tracks. We find that our derived temperatures and luminosities match the evolutionary model predictions well, however, the BPASS model, which includes the effects of binary evolution, provides the best overall fit. This revealed the presence of a group of cool RSGs in NGC 6822, suggesting a history of binary interaction. We hope this work will lead to further comparative RSG studies in other Local Group galaxies, opportunities for direct spectroscopic follow-up, and a better understanding of evolutionary model predictions.
Coronal Mass Ejections and Type II Radio Emission Variability during a Magnetic Cycle on the Solar-type Star ϵ Eridani
Authors: Ó Fionnagáin Dúalta , Kavanagh Robert D. , Vidotto Aline A. , Jeffers Sandra V. , Petit Pascal , Marsden Stephen , Morin Julien , Golden Aaron ,   (BCool Collaboration)
Published: January 2022

We simulate possible stellar coronal mass ejection (CME) scenarios over the magnetic cycle of ϵ Eridani (18 Eridani; HD 22049). We use three separate epochs from 2008, 2011, and 2013, and estimate the radio emission frequencies associated with these events. These stellar eruptions have proven to be elusive, although a promising approach to detect and characterize these phenomena are low-frequency radio observations of potential type II bursts as CME-induced shocks propagate through the stellar corona. Stellar type II radio bursts are expected to emit below 450 MHz, similarly to their solar counterparts. We show that the length of time these events remain above the ionospheric cutoff is not necessarily dependent on the stellar magnetic cycle, but more on the eruption location relative to the stellar magnetic field. We find that these type II bursts would remain within the frequency range of LOFAR for a maximum of 20–30 minutes post-eruption for the polar CMEs (50 minutes for second harmonics). We find evidence of slower equatorial CMEs, which result in slightly longer observable windows for the 2008 and 2013 simulations. Stellar magnetic geometry and strength have a significant effect on the detectability of these events. We place the CMEs in the context of the stellar mass-loss rate (27–48× solar mass-loss rate), showing that they can amount to 3%–50% of the stellar wind mass-loss rate for ϵ Eridani. Continuous monitoring of likely stellar CME candidates with low-frequency radio telescopes will be required to detect these transient events.
Strong Perpendicular Velocity-space Diffusion in Proton Beams Observed by Parker Solar Probe
Authors: Verniero J. L. , Chandran B. D. G. , Larson D. E. , Paulson K. , Alterman B. L. , Badman S. , Bale S. D. , Bonnell J. W. , Bowen T. A. , de Wit T. Dudok , Kasper J. C. , Klein K. G. , Lichko E. , Livi R. , McManus M. D. , Rahmati A. , Verscharen D. , Walters J. , Whittlesey P. L.
Published: January 2022

The SWEAP instrument suite on Parker Solar Probe (PSP) has detected numerous proton beams associated with coherent, circularly polarized, ion-scale waves observed by PSP’s FIELDS instrument suite. Measurements during PSP Encounters 4−8 revealed pronounced complex shapes in the proton velocity distribution functions (VDFs), in which the tip of the beam undergoes strong perpendicular diffusion, resulting in VDF level contours that resemble a “hammerhead.” We refer to these proton beams, with their attendant “hammerhead” features, as the ion strahl. We present an example of these observations occurring simultaneously with a 7 hr ion-scale wave storm and show results from a preliminary attempt at quantifying the occurrence of ion-strahl broadening through three-component ion VDF fitting. We also provide a possible explanation of the ion perpendicular scattering based on quasilinear theory and the resonant scattering of beam ions by parallel-propagating, right circularly polarized, fast magnetosonic/whistler waves.
Hydrogenation of Accreting C Atoms and CO Molecules–Simulating Ketene and Acetaldehyde Formation Under Dark and Translucent Cloud Conditions
Authors: Fedoseev Gleb , Qasim Danna , Chuang Ko-Ju , Ioppolo Sergio , Lamberts Thanja , van Dishoeck Ewine F. , Linnartz Harold
Published: January 2022

Simple and complex organic molecules (COMs) are observed along different phases of star and planet formation and have been successfully identified in prestellar environments such as dark and translucent clouds. Yet the picture of organic molecule formation at those earliest stages of star formation is not complete and an important reason is the lack of specific laboratory experiments that simulate carbon atom addition reactions on icy surfaces of interstellar grains. Here we present experiments in which CO molecules as well as C and H atoms are codeposited with H2O molecules on a 10 K surface mimicking the ongoing formation of an “H2O-rich” ice mantle. To simulate the effect of impacting C atoms and resulting surface reactions with ice components, a specialized C-atom beam source is used, implemented on SURFRESIDE3, an ultra-high vacuum cryogenic setup. Formation of ketene (CH2CO) in the solid state is observed in situ by means of reflection absorption IR spectroscopy. C18O and D isotope labeled experiments are performed to further validate the formation of ketene. Data analysis supports that CH2CO is formed through C-atom addition to a CO molecule, followed by successive hydrogenation transferring the formed :CCO into ketene. Efficient formation of ketene is in line with the absence of an activation barrier in C+CO reaction reported in the literature. We also discuss and provide experimental evidence for the formation of acetaldehyde (CH3CHO) and possible formation of ethanol (CH3CH2OH), two COM derivatives of CH2CO hydrogenation. The underlying reaction network is presented and the astrochemical implications of the derived pathways are discussed.
Prospects of Fast Flavor Neutrino Conversion in Rotating Core-collapse Supernovae
Authors: Harada Akira , Nagakura Hiroki
Published: January 2022

There is mounting evidence that neutrinos undergo fast flavor conversion (FFC) in core-collapse supernova (CCSN). In this paper, we investigate the roles of stellar rotation on the occurrence of FFC by carrying out axisymmetric CCSN simulations with full Boltzmann neutrino transport. Our result suggests that electron neutrino lepton number (ELN) angular crossings, which are the necessary and sufficient condition to trigger FFC, preferably occur in the equatorial region for rotating CCSNe. By scrutinizing the neutrino–matter interaction and neutrino radiation field, we find some pieces of evidence that the stellar rotation facilitates the occurrence of FFC. The low-electron-fraction region in the post-shock layer expands by centrifugal force, enhancing the disparity of neutrino absorption between electron-type neutrinos (ν
e) and their anti-particles (

ν

¯

e

). This has a significant impact on the angular distribution of neutrinos in momentum space, in which ν
e tends to be more isotropic than

ν

¯

e

;

consequently, ELN crossings emerge. The ELN crossing found in this study is clearly associated with rotation, which motivates further investigation on how the subsequent FFC influences explosion dynamics, nucleosynthesis, and neutrino signals in rotating CCSNe.
The Spectroscopic Binaries from the LAMOST Medium-resolution Survey. I. Searching for Double-lined Spectroscopic Binaries with a Convolutional Neural Network
Authors: Zhang Bo , Jing Ying-Jie , Yang Fan , Wan Jun-Chen , Ji Xin , Fu Jian-Ning , Liu Chao , Zhang Xiao-Bin , Luo Feng , Tian Hao , Zhou Yu-Tao , Wang Jia-Xin , Guo Yan-Jun , Zong Weikai , Xiong Jian-Ping , Li Jiao
Published: January 2022

We developed a convolutional neural network model to distinguish the double-lined spectroscopic binaries (SB2s) from others based on single-exposure medium-resolution spectra (R ∼ 7500). The training set consists of a large set of mock spectra of single stars and binaries synthesized based on the MIST stellar evolutionary model and ATLAS9 atmospheric model. Our model reaches a novel theoretic false-positive rate by adding a proper penalty on the negative sample (e.g., 0.12% and 0.16% for the blue/red arm when the penalty parameter Λ = 16). Tests show that the performance is as expected and favors FGK-type main-sequence (MS) binaries with high mass ratio (q ≥ 0.7) and large radial velocity separation (Δv ≥ 50 km s−1). Although the real false-positive rate cannot be estimated reliably, validating on eclipsing binaries identified from Kepler light curves indicates that our model predicts low binary probabilities at eclipsing phases (0, 0.5, and 1.0) as expected. The color–magnitude diagram also helps illustrate its feasibility and capability of identifying FGK MS binaries from spectra. We conclude that this model is reasonably reliable and can provide an automatic approach to identify SB2s with period ≲10 days. This work yields a catalog of binary probabilities for over 5 million spectra of 1 million sources from the LAMOST medium-resolution survey (MRS) and a catalog of 2198 SB2 candidates whose physical properties will be analyzed in a follow-up paper. Data products are made publicly available online, as well as our Github website.
Optical Photometry of WR140 as the Dust Formed During the 2016 Periastron Passage
Authors: Peatt Megan J. , Richardson Noel D.
Published: January 2022

The colliding wind binary WR140 produces dust in its shocked gas every periastron passage. While the infrared light curve is very repeatable, there are noticeable changes every cycle in the optical time-series photometry. In the phases following periastron, there are optical dips in the light curve that were postulated to be caused by localized clumps in the dust produced in our line of sight. We report on the B- and V-band light curves that were recorded by the American Association of Variable Star Observers after the 2016 periastron event and briefly discuss comparisons to geometric models of the dust production to infer that these features are likely caused by localized dust clumps in the new dust shell.
Disk Material Inflates Gaia RUWE Values in Single Stars
Authors: Fitton Shannon , Tofflemire Benjamin M. , Kraus Adam L.
Published: January 2022

An understanding of the dynamical evolution of binary star systems, and their effects on stellar and planetary evolution, requires well-characterized binary populations across stellar ages. However, the observational resources required to find and characterize binaries are expensive. With the release of high-precision Gaia astrometry, the re-normalized unit weight error (RUWE) statistic has been shown to reveal the presence of binary systems, with RUWE values greater than 1.2 indicating the presence of a stellar companion within ∼1″. Our goal is to assess whether this new diagnostic, which was developed for field-age systems (>1 Gyr), applies to young systems; specifically, those that host circumstellar disks. With a control sample of single-star systems, compiled from high-contrast imagining surveys of the Taurus and Upper Scorpius star-forming regions, we compare the RUWE values for systems with and without circumstellar disks. We show that the presence of a protoplanetary disk alone can result in inflated RUWE values. Based on the distribution of the RUWE for disk-bearing single stars, we suggest a more conservative single-star—binary threshold is warranted in the presence of disk material. We place this cutoff at the distribution’s 95th percentile, with RUWE = 2.5.
Small interfering RNAs targeting agrA and sarA attenuate pathogenesis of Staphylococcus aureus in Caenorhabditis elegans
Authors: Thompson Terissa Alexas , Brown Paul Dean
Published: January 2022

Introduction: The use of small interfering RNA (siRNA) gene silencing is a promising therapeutic option as it does not impose selective pressure on bacteria that is often associated with the development of resistance. The study assessed the effect of siRNA targeted to sarA and agrA in S. aureus and the relationship between the transcriptional response, biofilm formation and pathogenicity.

Methodology: siRNAs designed against agrA and sarA were electroporated into methicillin-resistant and methicillin-susceptible S. aureus strains. mRNA levels, growth kinetics, biofilm formation and minimal inhibitory concentration were measured. Efficacy of siRNA in bacteria was assessed using survival assays in a C. elegans model. Differences in gene expression before and after siRNA treatment were anaysed using the paired t-test, while the log rank test was used to assess the significance of any difference among survival rates of nematodes.

Results: Biofilm formation decreased significantly in siRNA treated strains and growth rates of siRNA treated strains were significantly higher compared to untreated strains. We observed significant decreases in the transcriptional response in siRNA treated strains, with concomitant significant increases in the lifespan of C. elegans worms exposed to siRNA-treated versus untreated strains.

Conclusions: siRNA targeted to agrA and sarA lowered mRNA transcription and pathogenicity of S. aureus.
Salmonella Schwarzengrund, Akuafo, and O:16 isolated from vacuum-packaged beef produced in the state of Mato Grosso, Brazil
Authors: Muller Barbara , Cunha-Neto Adelino , Castro Vinicius Silva , Carvalho Ricardo Cesar Tavares , Carvalho Teixeira Larrayane Albuês , Rodrigues Dalia dos Prazeres , De Souza Figueiredo Eduardo Eustáquio
Published: January 2022

Introduction: Salmonella spp. is a pathogen associated with foodborne infections, mainly in foods of animal origin. In this context, the present study investigated the occurrence of Salmonella serotypes, genotypes and the antimicrobial resistance profiles of strains in fresh beef produced in Mato Grosso, Brazil.

Methodology: A total of 107 samples from 13 different slaughterhouses in the Mato Grosso were analyzed. Suggestive Salmonella spp. colonies detected during the biochemical screening were submitted to DNA extraction, and hilA gene amplification was used for the PCR reaction. Antimicrobial resistance analyses were performed using 17 antimicrobial agents from eight different classes by the disk diffusion method. Strains exhibiting multiple drug resistances were submitted to PCR genotyping based on repetitive sequences (rep-PCR), using a commercial semiautomatic DiversiLab® system.

Results: A total of 5.6% (6/107) of the samples tested positive by the conventional method and were confirmed by PCR, namely two S. Akuafo, two non-typable Salmonella enterica strains, one Salmonella O:16 serovar, and one S. Schwarzengrund. The antimicrobial resistance profiles indicated resistance to gentamicin (30%), tetracycline, nitrofurantoin, and trimethoprim + sulfamethoxazole (16%). Genotyping indicated a 70% difference between S. Schwarzengrund and the non-typable Salmonella strains. No genetic similarities were observed between the six Salmonella isolates based on rep-PCR, including two S. Akuafo.

Conclusions: The results obtained herein corroborate that Salmonella serovar Schwarzengrund is commonly isolated in animal products in the state of Mato Grosso, Brazil, also highlighting the presence of two unusual Salmonella serovars in beef (Akuafo and O:16).
Emotional Intelligence and Self-efficacy as Predictor Factors of Student Resilience in Online Learning during Pandemic Era
Authors: Ainiyah Nur , Zahroh Chilyatiz , Khamida Khamida , Budury Syidatul , Nurjanah Siti , Hasina Siti Nur , Wardhany Saptita Eka
Published: January 2022

BACKGROUND: The COVID-19 pandemic has an impact on the educational aspect. The education was conducted through learning, but not all students are accustomed to online learning so there is a process of self-adjustment that makes the learning does not run smoothly. Although there are many difficulties in doing the online learning process, students must be ready to obey the government’s policy. The students are required to be able to adjust and be able to survive with this condition. Therefore, it takes resilience in students, so that they can rise and survive in the pandemic era. AIM: This study aims to analyze emotional intelligence and self-efficacy as predictor factors of resilience among university students in doing online learning in the pandemic era. METHODOLOGY: This type of research was correlation analysis. The population of this study was a student of UNUSA, in which sampling used random sampling with a total of 503 students. The dependent variables in this study were emotional intelligence and self-efficacy. The dependent variable was the resilience of students in online learning. The instruments used in this study were the emotional intelligence questionnaire, general self-efficacy scale, and brief resilience scale. The Pearson correlation method was used for statistical analysis. RESULTS: The correlation showed the presence of relationship between emotional intelligence (r = 0.895) and self-efficacy (r = 0.546) with resilience in students with a significance level of 0.000 (p < 0.05). CONCLUSION: There was a relationship between emotional intelligence and self-efficacy with resilience among university students in doing online learning in the pandemic era.
Renal AML Surgically Treated 33 Cases
Authors: Salama Mohamed , Mostafa Amr , Salama Nada , Alabrak Mona , Abdalaleem Shaimaa , Hanafy Ayman
Published: January 2022

BACKGROUND: Renal angiomyolipoma (RAML) is a rare benign neoplasm with a prevalence varying between 0.2% and 0.6% and a strong female predilection. They occur as sporadic, isolated entities in 80% of cases. The remaining 20% of angiomyolipomas (AMLs) develop in association with tuberous sclerosis complex or pulmonary lymphangioleiomyomatosis.

AIM: We describe our 10-year experience with AML and discuss the treatment strategies employed at our center.

METHODS: The medical records of all 33 patients with pathologically confirmed RAML treated either by nephrectomy or nephron-sparing surgery at our center over 10 years were reviewed for patient age and sex, tumor location and size, association with TBS.

RESULTS: There were 28 females (84.8%) and 5 males (15.2%) with a median age that was 52 (range 22–74) years at the time of surgery. Thirty patients (90.9%) had sporadic isolated AML, and 3 patients (9.1%) had AML with TBS. The tumor was in the right kidney in 15 (45.5%) patients, in the left kidney in 17 (51.5%) patients, and bilateral in only 1 patient (3%) who was diagnosed with TBS. At presentation, flank pain was the main symptom in 23 patients (69.7%).

CONCLUSIONS: Surgical resection of RAML provides short-term symptomatic relieve and long-term survival.
Homocysteine Levels and Osteoporotic Fracture in a Population Aged 55 Years Over in Medan District Indonesia
Authors: Widjaja Sry Suryani , Rusdiana Rusdiana , Jayalie Vito Filbert
Published: January 2022

BACKGROUND: Osteoporosis is a chronic, progressive, systemic, skeletal, multifactorial disorder characterized by low bone mass, microarchitectural deterioration of bone tissues that increased the risk of fragility fracture. The increased prevalence of early osteoporosis in homocystinuria illustrates that homocysteine metabolism is involved in the process of osteoporosis.

AIM: This study was aimed to look for the relationship between homocysteine levels in the blood and the occurrence of osteoporotic fractures in the population above 55 years old.

METHODS: This is a descriptive study with cross-sectional approach, total sixty-five patients aged 55 years or older with osteoporotic fracture and as a control group without osteoporotic fracture. Blood pressure, heart rate, and body weight were recorded, bone density was measured using central dual-energy x-ray absorptiometry (DXA) machine/DXA and homocysteine plasma levels were measured using the enzyme-linked immunoassay method.

RESULTS: Total of 65 samples with age range between 55 and 88 years, they were 38 peoples with osteoporosis, which 12 got the osteoporotic fracture. Among the 16 samples in osteopenia group, two got the fracture, among 11 samples with normal bone density, one got the osteoporotic fracture. There was statistical significant between fracture and bone mineral density (p = 0.00) and no statistical significant between bone density and gender (p = 0.08), bone density and body mass index (BMI) (p = 0.11). There was statistical significant correlation between homocysteine and age (p = 0.02), age and bone density (p = 0.002) but no statistical significant correlation between homocysteine and BMI (p = 0.07), homocysteine and osteoporotic fracture (p = 0.87).

CONCLUSIONS: Homocysteine level did not increased the incidence of osteoporotic fracture, however homocysteine increased with aging and correlated with bone mineral density.
Grandeur et décadence du consentement en droit pénal
Authors: Hardouin-Le Goff Carole
Published: January 2022

A priori séduisant, le consentement de la victime, lorsqu'il est instillé dans l'incrimination pénale, tend aujourd'hui à perdre ses lettres de noblesse. A bien des égards en effet, tant du point de vue du législateur, des juges du fond que des victimes, de sérieux griefs peuvent être formulés à son encontre. Au reste, la récente loi du 21 avril 2021 visant à protéger les mineurs des crimes et délits sexuels et de l'inceste, parce qu'elle opte précisément pour un abandon radical et résigné du consentement de la victime pour tout un pan des infractions sexuelles, pourrait bien inaugurer sa décadence.
À la recherche du consentement perdu
Authors: Gillet Jean-Louis
Published: January 2022

Le consentement, terme porteur, notamment en droit, d'une apparente banalité comme manifestation contraire au refus, est susceptible d'un réexamen prenant en compte les phénomènes qui l'accompagnent, le traversent ou l'expriment. Sa portée, fondamentale dans la sauvegarde de tous les rapports interpersonnels juridiques, économiques et sociaux, autorise dans tous les domaines une mise en cause, une recherche et une reconstruction. Au nombre des facteurs qui favorisent une telle évolution prennent place les actuelles dénonciations d'abus sexuels, notamment sur des mineurs.
L'interculturalité dans la justice
Authors: Rouland Norbert
Published: January 2022

L'interculturalité est l'ensemble des interactions entre cultures différentes mises en contact par divers processus historiques, comme la constitution de vastes Empires en Orient comme en Occident, ou de la colonisation. Elle s'accompagne de la mise en relation de systèmes juridiques et judiciaires différemment hiérarchisés suivant les circonstances et leurs évolutions. On peut alors parler de pluralismes juridique et judiciaire. Pour l'auteur, le degré de pluralisme juridique et judiciaire dépend de deux conditions. La première est d'ordre concret : le pouvoir central dispose-t-il des moyens techniques nécessaires pour imposer le droit étatique ? Le second tient à la culture juridique de l'État concerné : est-elle moniste comme en France (il n'y a qu'un seul peuple français), ou pluraliste comme en Amérique du Nord, où la société est conçue comme l'emboîtement de communautés ? Cet article prend divers exemples. Tout d'abord le droit romain ; ensuite l'outre-mer français actuel, notamment le cas de la lointaine Nouvelle-Calédonie, qui constitue une exception à la tradition juridique française.
« Morts ou vifs »
Authors: Chaillou Philippe
Published: January 2022

Ces réflexions sur le travail avec les jeunes délinquants sont le fruit de l'expérience d'un homme qui a été, à la fois magistrat spécialisé dans les affaires de mineurs pendant plus de 30 ans, puis aujourd'hui psychanalyste, écoutant des équipes d'éducateurs prenant en charge des jeunes confiés à l'Aide Sociale à l'Enfance ou à la Protection Judiciaire de la Jeunesse. Elles soutiennent que les jeunes délinquants, en raison des ruptures symboliques subies par leurs parents ou même par les générations d'avant, ont fait l'objet d'un vœu de mort inconscient de la part de leurs géniteurs. Ainsi, inconsciemment et n'en voulant rien savoir, le jeune délinquant s'adresse, par ses actes délinquants symptomatiques, à la justice comme un fils mort pour assurer la vengeance de ce désir de mort de ses parents, pour se faire rendre justice d'une injustice originaire dont il a été l'objet. Or, si la société et son surmoi social ne veulent rien savoir non plus de ce processus inconscient, le résultat en est catastrophique, car le passage à l'acte est si inconsciemment justicier que son jugement et la condamnation qui s'ensuivent n'apportent encore que plus d'eau au moulin du sentiment inconscient d'injustice de son auteur. Pourtant, il n'y a pas de fatalité de la délinquance car, de notre position, nous sommes toujours responsables. Le jeune délinquant peut ainsi obliquer, remanier ses relations à autrui. Faut-il pour cela que les professionnels ne confondent pas le symptôme et la raison du symptôme et portent sur chaque jeune délinquant, dans sa singularité, un autre regard, cette fois porteur de vie, plutôt que de mort.
Framing the Feminised Home-Based Services Sector at European Level: the Evolving Role of Trade Unions and Employer’s Organisations
Authors: Ledoux Clémence
Published: January 2022

Les services à domicile -dans lesquels les femmes des classes populaires constituent la majorité de la main-d'œuvre- sont arrivés sur l'agenda européen dans les années 1990. Depuis lors, l'attention des institutions européennes s'est concentrée sur deux questions principales : la participation au marché du travail et les droits humains et des travailleuses. Quel a été le rôle des représentants des travailleuses 1 et des employeurs dans l'émergence et le façonnement au niveau européen de ce nouveau domaine d'intérêt ? Cet article montre que les fédérations patronales nationales et européennes ont coopéré avec la Commission européenne pour présenter le travail à domicile comme un moyen d'augmenter les taux d'emploi, mais que d'autres façons de penser ces services sont également apparues. Les activités de l’organisation internationale du travail (OIT) ont contribué à développer des convergences des cadrages différents du problème au niveau européen.
Class and Gender in Conflict? Exploring Intersectionality in Practice in Swedish Gender Equality Bargaining
Authors: Erikson Josefina
Published: January 2022

En 2007, un fonds controversé pour l'égalité des sexes a été introduit dans les négociations collectives en Suède afin de réduire l'écart de rémunération entre les hommes et les femmes. Le présent article explore le conflit suscité par ce fonds pour mettre en lumière les raisons pour lesquelles il était si controversé. Il vise également à approfondir les connaissances concernant la possibilité d'introduire une perspective intersectionnelle dans le programme de négociation, qui tienne compte à la fois du genre et de la classe. Les résultats empiriques démontrent que la controverse résidait dans des différences dans la façon de conceptualiser les inégalités sur le marché du travail. Sur le plan théorique, l'article illustre les difficultés liées à l'application pratique d'une perspective intersectionnelle.
Le droit économique, à la lumière des enseignements de Bernard Remiche
Authors: Bakandeja Grégoire
Published: January 2022

Le droit économique est conçu comme une discipline scientifique et pratique, discipline de synthèse et de partage dans une approche méthodologique pluridisciplinaire – droit (public et privé), économie, sciences sociales, éthique et valeurs. Il est orienté vers la mise en perspective des règles équilibrées et justes dans le contexte de l’économie mondiale globalisée. En ce sens, il doit être un instrument au service du développement collectif. Il constitue une opportunité à saisir pour une meilleure intégration de l’Afrique dans l’économie mondiale.
L’action en contrefaçon comme « arme de domination »
Authors: Siiriainen Fabrice
Published: January 2022

B. Remiche a souvent dénoncé des usages dévoyés de l’action en contrefaçon utilisée comme une « arme de domination » commerciale. Ce phénomène, loin d’être marginal, est sûrement sous-estimé et difficilement appréhendable par la pratique en raison de l’état du droit de la propriété intellectuelle qui, au contraire, est de nature à l’encourager. Le présent article présente cette problématique et envisage quelques pistes pour mieux lutter à l’avenir contre ce type d’abus, la première étape résidant dans sa prise de conscience.
La santé publique mérite mieux
Authors: Vivant Michel
Published: January 2022

La récente pandémie qui s’est abattue sur la planète a réactivé le débat récurrent sur les rapports à établir entre brevet et santé publique. L’éventuelle « levée » des brevets, défendue par certains, est pleine d’ambiguïté. Il faut en revanche reconsidérer la licence d’office dans l’intérêt de la santé publique, pour tout à la fois lui donner une réalité et la rendre aussi efficace que possible.
Les tournants du transfert international de technologie : le moment du climat
Authors: Braga Renteria Natália
Published: January 2022

Le transfert international de technologie (TIT) est l’un des sujets les plus inachevés de l’agenda international. Apparu sous l’angle de l’accès au développement par les pays du Sud, global après les grandes guerres, le TIT a connu plusieurs tentatives d’aboutissement, comme la doctrine en faveur d’un Nouvel ordre économique international (NOEI) et la transposition dans l’Organisation mondiale du commerce (OMC).
L’actionnaire est-il recevable à introduire une action en justice pour un préjudice subi par la société ?
Authors: Philippe Denis
Published: January 2022

Lorsqu’il est porté atteinte au patrimoine d’une société, l’action en réparation qui résulte de ce dommage appartient à cette société et à son organe compétent. Quid es actionnaires ? Ceux-ci ne disposent pas d’un droit d’action autonome en réparation d’un préjudice collectif causé au patrimoine de la société. Ils ne peuvent agir que pour obtenir réparation d’un préjudice personnel et distinct de celui subi par la société. La perte de dividende ne constitue pas un préjudice propre. Les mêmes règles s’appliquent en cas d’abus de majorité.
Using Relapse Prevention Interventions to Maintain Remission and Minimize Relapse Rates for Individuals With Schizophrenia: A Scoping Review
Authors: Abu Sabra Mohammad A. , Hamdan-Mansour Ayman M.
Published: January 2022

Maintaining remission and improving quality of life for individuals with schizophrenia can encourage them to return to work, participate in volunteer opportunities, and establish healthy intimate relationships. The purpose of the current review was to explore the impacts of using relapse prevention interventions on maintaining remission and minimizing relapse rate for individuals with schizophrenia. A scoping review was performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews guidelines to screen 134 studies published between 2010 and 2020. A total of 14 articles met eligibility criteria. Included studies showed that intervention strategies tailored to meet the needs of individuals with schizophrenia must be developed and applied in different psychiatric settings to maintain remission and minimize relapse rate. [
Journal of Psychosocial Nursing and Mental Health Services, 60
(7), 47–54.]
New insights to the Hide-Skeldon-Acheson dynamo
Authors: Li Ximing
Published: January 2022

The present work is devoted to giving new insights into the Hide-Skeldon-Acheson (HSA) dynamo. The paper discusses the locally and globally asymptotical stability of the equilibrium. All orbits of the system are proved to be bounded. The existence of periodic orbits is proved by the generalized Melnikov method. The paper proves rigorously that Hopf bifurcation occurs and gives the formulae to determine the direction, stability and period of bifurcating periodic solutions. Finally, the paper investigates the coexistence of three types of attractors: equilibria, hidden periodic attractors and hidden chaotic attractors.
Random exponential attractor for stochastic non-autonomous suspension bridge equation with additive white noise
Authors: Xu Ling , Huang Jianhua , Ma Qiaozhen
Published: January 2022

In this paper, we mainly consider the existence of random attractor and random exponential attractor for stochastic non-autonomous suspension bridge equation with additive white noise. First step, the well-posedness and the existence of a random attractor for the cocycle associated with the considered system is established. Second step, the upper semicontinuity of random attractors is also provided when the coefficient of random term approaches zero. Third step, we prove the regularity of random attractor in a higher regular space by the "iteration" method. Finally, we give the existence of a random exponential attractor for the considered system, which implies the finiteness of fractal dimension of random attractor.
Some results on free boundary problems of incompressible ideal magnetohydrodynamics equations
Authors: Hao Chengchun , Luo Tao
Published: January 2022

We survey some recent results related to free boundary problems of incompressible ideal magnetohydrodynamics equations, and present the main ideas in the proofs of the ill-posedness in 2D when the Taylor sign condition is violated given [1], and the well-posedness of a linearized problem given in [2] in general $ n $-dimensions ($ n \geqslant 2 $) when the Taylor sign condition is satisfied and the free boundaries are closed.
Near-resonances and detuning in classical and quantum mechanics
Authors: Gaeta G. ,   Dipartimento di Matematica, Università degli Studi di Milano, v. Saldini 50, 20133 Milano, Italy, Pucacco G. ,   Dipartimento di Fisica and INFN, Sezione di Roma Ⅱ, Università di Roma "Tor Vergata", Via della Ricerca Scientifica 1, 00133 Roma, Italy
Published: January 2022

From the point of view of perturbation theory, (perturbations of) near-resonant systems are plagued by small denominators. These do not affect (perturbations of) fully resonant systems; so it is in many ways convenient to approximate near resonant systems as fully resonant ones, which correspond to considering the "detuning" as a perturbation itself. This approach has proven very fruitful in Classical Mechanics, but it is also standard in (perturbations of) Quantum Mechanical systems. Actually, its origin may be traced back (at least) to the Rayleigh-Ritz method for computing eigenvalues and eigenvectors of perturbed matrix problems. We will discuss relations between these approaches, and consider some case study models in the different contexts.
Weight Influence of Logarithmic and Exponential Functions on the Selection of Wireless Networks Using Multi-Criteria Decision-Making Methods
Authors: Zentani Abdulhakim , Zulkifli Nadiatulhuda , Ramli Arnidza
Published: January 2022

This research aims to study the influence of logarithmic and exponential functions on the multi-criteria decision-making algorithm that changes the linear to the nonlinear method. It is carried out to better understand the multi-criteria decision-making (TOPSIS) algorithm whereby these functions may influence the criteria weights during the selection of the best network. The experiment is applied under different network types to evaluate the most optimum network that leads to better throughput, low latency, minimum BER, and low price per MB. The algorithms are assessed in MATLAB simulation environments. In addition, the adoption of the Wi-Fi networks standard is determined by factors such as bandwidth, signal to noise ratio and the channel modulation technique during the decision-making process. The simulation results showed that the exponential function had produced approximately similar results to that of linear TOPSIS algorithm because both keep the weights to demonstrate positive values. However, logarithmic TOPSIS produced different results and a worst-case scenario, as the weights have negative values which lead to a phase shift of 180⁰ during the decision process. Thus, linear TOPSIS was found to have the best results while logarithmic TOPSIS had the worst outcome.