bluuebunny/crossref_metadata_2025 huggingface dataset:
Professor Krishan L. Duggal:	A Biographical Note
Authors: Sharma R. , Şahin Bayram
Published: March 2023

In this note, we present a biographical sketch of the life and academic contributions of late Professor Krishan L. Duggal. His contributions span from Riemannian and Lorentzian geometries of manifolds with various structural groups of the tangent bundle, Lightlike curves and submanifolds, Cauchy-Riemann geometry, Symmetries of semi-Riemannian manifolds, to Killing horizons. In particular, his approach to the study of lightlike submanifolds is remarkable and drawn considerable interest of many geometers.
Do We Overdiagnose Migraine? A Prospective Study at Emergency Departments of Two Tertiary Care Hospitals
Authors: Khan Taimoor Ashraf , Zahid Muhammad Abdullah , Zameer Sheharyar , Siddiqi Umair Asif , Raashid Sheharyar , Humayun Fakhar
Published: March 2023

Objective: To assess pathologies in patients previously diagnosed with migraine for their recurrent headachecomplaints, with an aim to uncover the misdiagnosis of migraine.Study Design: Prospective cohort study.Place and Duration of Study: The study was carried out at Emergency Departments of Military Hospital andCombined Military Hospital, Rawalpindi Pakistan from April 2018 to February 2019.Materials and Methods: This study is a prospective cohort study. Raosoft was used for sample size calculation.Non-probability convenient sampling technique was used. All patients included in the study were diagnosed asa case of migraine by a Medical Specialist /Neurologist and were already on treatment protocols for migraine.All patients with additional CNS pathology were excluded from this study. The data analysis was done using IBMSPSS for Windows version 25. Categorical Data was presented as percentages and frequencies.Results: One hundred thirty one patients participated in the study. The subjects ranged from 19 to 51 years ofage with 32% males and 68% females. Seventy seven of those patients reported more than 4 acute attacks ofheadache per 6 months which compelled them to visit their nearest ER. The participants were dividedaccording to possible causes after reassessment. Other causes included Hypertrophied Nasal Turbinates, DNS,Frontal Sinusitis, Septal Spur, TMJ disorders, Maxillary Sinusitis, Pansinusitis and Post Herpetic Neuralgia. Aftermanaging their acute attack in the ER, the patients were referred to various departments for respectivetreatment protocols. After 6 months of follow-up, 54.7% of the patients reported a reduction in visits to the ERfor acute episodes of headache.Conclusion: There is an increased tendency to label and treat patients with any headache as migraine whichresults in the administration of unnecessary analgesia which may have serious effects on health.
Application of Traditional Machine Learning Models for Quantitative Trading of Bitcoin
Authors: Wang Yimeng , Yan Keyue
Published: March 2023

Bitcoin, the most popular cryptocurrency around the world, has had frequent and dramatic price changes in recent years. The price of bitcoin reached a new peak, nearly $65,000 in July 2021. Then, in the second half of 2022, the bitcoin price begins to decrease gradually and drops below $20,000. Such huge changes in the bitcoin price attract millions of people to invest and earn profits. This research focuses on the predictions of bitcoin price changes and provides a reference for trading bitcoin for investors. In this research, we consider a method in which we first apply several traditional machine learning regression models to predict the Changes of Moving Average in the bitcoin price, and then based on the predicted results, we set labels for bitcoin price changes to get the classification results. This research shows that the method of transforming regression results to the classification analysis can achieve higher accuracy than the corresponding machine learning classification models and the best accuracy is 0.81. Besides, according to this method, this research constructs a Machine Learning Trading Strategy to compare with the traditional Double Moving Average Strategy. In a simulation experiment, the Machine Learning Trading Strategy also has a better performance and earns a 68.73% annualized return.
The Influence of Social Media, Brand Trust, Brand Affect and Value Consciousness on Brand Loyalty: Online Transportation Cases in Indonesia
Authors: Santoso Singgih
Published: March 2023

Currently, the use of social media in Indonesia as part of social interaction activities in the community and at the same time as a medium for companies to promote their products is increasing. Likewise, digital technology has penetrated public transportation activities in the community, with the emergence of Gojek and Grab as the two leading online transportation brands in Indonesia. The purpose of this study is to find out whether digital marketing activities can affect the buying behavior of a brand. Specifically, this study aims to determine the effect of Social Media Marketing on Brand Trust, Brand Affect and Value Consciousness, and ultimately on Brand Loyalty. The research objects are the two major online transportation companies, namely Gojek and Grab. Using survey research methods and purposive random sampling technique, 240 respondents in Yogyakarta city, Indonesia, were given a questionnaire related to their perceptions of the five constructs above. By using structural equation modeling, measurement tests and structural tests were carried out. The results show that Social Media Marketing affects the Brand Affect, Brand Trust and Value Consciousness positively and significantly. While the Brand Affect affects the Brand Trust and Brand Loyalty positively and significantly. However, the Value Consciousness does not significantly affect the Brand Loyalty. The results of the study prove that digital marketing activities through social media can have a significant effect on the formation of consumer trust and finally on brand loyalty. Some of the implications of the results of this study are discussed further in the discussion.
Community Enterprise in Processed Agricultural Products after the COVID-19: Problems and Adaptation for the Development of Grassroots Economy
Authors: Kitipadung Jitsupa , Jaiborisudhi Watunyu
Published: March 2023

Community entrepreneurs in a processed agricultural product are the foundation of the economy which links the agricultural sector of the nation. They play an important role in driving the grassroots economy of Thailand after the COVID-19 pandemic. This study reflected the usage of major ingredients grown locally in the processing of agricultural products, which provide the advantage of unique local ingredients while also preventing the waste of oversupply. Meanwhile, entrepreneurs have conventional wisdom in processing raw materials into products. Additionally, the challenging issues for small community enterprises are administration and fundraising to expand their production. The lack of labours in rural areas also poses a challenge to the administration of community enterprises. The findings also reveal that there should be a sustainable extension of other activities, such as integrating agritourism activities and the development of a sustainable ecosystem. There should also be the utilization of online channel in the sales and communication of products and communities’ identities. It was also found that the supporting mechanism for community enterprises is still limited in some ways due to the requirement to follow central policies in development. Finally, the new generation should be motivated to join community enterprises in processed agricultural products as they could help in the long-term development of the community.
Application 3D Forensic Science in a Criminal Investigation
Authors: Drofova Irena , Adamek Milan , Stoklasek Pavel , Ficek Martin , Valouch Jan
Published: March 2023

This manuscript discusses the modern approach and application of 3D digital imaging in forensic science. It presents the basic principles and approaches of 3D modeling methods. Selected methods of image capture and its subsequent processing into a 3D model are applied to a specific object. This object is captured by a mobile phone camera, a LiDar sensor, and a 3D scanner for further image processing for different desired image outputs. The text describes the photogrammetry method, the workflow with the LiDar sensor, and the 3D model of the object intended for 3D printing. The paper discusses the potential of the selected methods and their application in forensic sciences.
Painotetun opetuksen oppilasvalikointi Suomen kaupunkikouluissa: valintakriteerit ja ideaalioppilaan normi
Authors: Pasu Terhi , Seppänen Piia , Kosunen Sonja
Published: March 2023

Pupil selection to emphasised teaching in comprehensive schools in urban Finland: selection criteria and the norm of the ideal pupil
In this article we research how pupil selection inside formally non-selective comprehensive schooling in Finland is governed and analyse the admission criteria cities (n=12) and schools use to select pupils for emphasised teaching. We analyse how the pupil selection criteria texts present content that requires different forms of capital (Bourdieu) to enrol to emphasised teaching. Use of the admission criteria was vast and varied nationally. It did not just evaluate pupil’s aptitudes in a certain emphasised discipline as legislation lines but applied much more versatile criteria. We argue that pupil selection texts create the norm of the ideal pupil preferred by emphasised teaching. Municipalities and schools are the key actors creating routes to social distinction inside comprehensive schooling.
The Empathy for Pain Stimuli System (EPSS): Development and preliminary validation
Authors: Meng Jing , Li Yanting , Luo Longli , Li Lingxiao , Jiang Jin , Liu Xiaocui , Shen Lin
Published: March 2023

We present the Empathy for Pain Stimuli System (EPSS): a large-scale database of stimuli for studying people’s empathy for pain. The EPSS comprises five sub-databases. First, the Empathy for Limb Pain Picture Database (EPSS-Limb) provides 68 painful and 68 non-painful limb pictures, exhibiting people’s limbs in painful and non-painful situations, respectively. Second, the Empathy for Face Pain Picture Database (EPSS-Face) provides 80 painful and 80 non-painful pictures of people’s faces being penetrated by a syringe or touched by a Q-tip. Third, the Empathy for Voice Pain Database (EPSS-Voice) provides 30 painful and 30 non-painful voices exhibiting either short vocal cries of pain or neutral interjections. Fourth, the Empathy for Action Pain Video Database (EPSS-Action_Video) provides 239 painful and 239 non-painful videos of whole-body actions. Finally, the Empathy for Action Pain Picture Database (EPSS-Action_Picture) provides 239 painful and 239 non-painful pictures of whole-body actions. To validate the stimuli in the EPSS, participants evaluated the stimuli using four different scales, rating pain intensity, affective valence, arousal, and dominance. The EPSS is available to download for free at https://osf.io/muyah/?view_only=33ecf6c574cc4e2bbbaee775b299c6c1.
PERCEIVED PARENTING STYLE- A CORRELATE AND A PREDICTOR OF ADOLESCENT SUICIDAL IDEATION
Authors: Parveen Aamina , Bhat Rameez Ahmad , Raja Waseem
Published: March 2023

Suicide rates are found more prevalent among adolescent students throughout the world and India is not an exception. But suicide is not sudden but a long thought process which starts from suicidal ideation. There are different factors that compel an adolescent to commit suicide but the most one of the prominent among them is parenting. So the purpose of this research study was to examine the correlation between perceived parenting and suicidal ideation and further it aimed at analyzing the predictive relationship between these two variables. 600 adolescent students comprise the sample of this study and the sampling technique used was stratified random sampling. The data collection tools used, were Suicidal ideation scale (Sisoda, S and Bhatnagar, V, 2011) and Parenting style scale (Gupta and Mehtani, 2017). Pearson’s product moment correlation and linear regression analysis were used to find out the correlation and regression coefficients. The results of the study revealed that there is a negative correlation between democratic parenting style and suicidal ideation and other three parenting styles (Autocratic, Permissive, Uninvolved) showed positive relation with suicidal ideation. It further revealed that Autocratic parenting style is the most significant correlate and predictor of suicidal ideation among adolescent students while the democratic parenting is less significant correlate and lower predictor of adolescent suicidal ideation.
Novel Application of Umbilical Cord Flowable Tissue Allografts in Sacral Decubitus Ulcers: A Case Study
Authors: Lavor Michael , Shou John , Mobarak Reza , Lambert Naomi , Barrett Tyler
Published: March 2023

Each year, thousands of patients suffer from sacral decubitus ulcers, also known as pressure ulcers or sores. The current standard of care for sacral decubitus ulcer treatment is expensive and suboptimal, ranging in cost from a 15-dollar tube of Neosporin Ointment to 240,000 dollars for a skin flap surgery. Grade II pressure sores inevitably progress to stage III and IV if not addressed aggressively and early. Late-stage pressure sores present a unique challenge to physicians, particularly when they are deep, tunneling, and have tendon or bone involvement, as is the case for the two patients in this case study. The first patient in this study (referred to as patient 1) was afflicted with a mid-sacral pressure sore with exposed tendon, bone, and tunneling of ten years duration. The second patient in this study (referred to as patient 2) suffered from an ischial pressure sore with exposed tendon, bone, and tunneling for 30 months duration. Both patients exhausted conservative measures, including wound vac placement, oral and IV antibiotic treatment, multiple episodes of sharp debridement, wet-to-dry dressings, silver sulfadiazine dressings, and dehydrated amniotic membrane allograft placements. After failing conservative management, both patients received several applications of Wharton’s Jelly, a Mesenchymal Connective Tissue allograft (MCT), to accelerate wound closure. Conservative management, including sharp debridement, oral antibiotics, and electrical stimulation, was used in conjunction with the WJ allograft applications. At the time of consultation with Dr. Michael Lavor, both patients had Sacral Decubitus Ulcers (SDU) classified as Stage IV with tissue loss and involvement of bone or tendon, according to the National Pressure Ulcer Advisory Panel (NPUAP). After eight months of standardized wound care treatment combined with six Wharton’s Jelly allograft applications, both patients had wounds showing over 90% contraction in depth, tunneling, and diameter. This case study demonstrates a precedent for applying Wharton’s Jelly allografts in late-stage sacral decubitus ulcers with associated tunneling in combination with standard of care. Future research efforts with Wharton’s Jelly allografts applied to recalcitrant wounds may be directed at the frequency and combination of procedural techniques that best promote granulation tissue formation and volumetric contracture of deep wounds by secondary intention.
Do COVID-19 RNA-Injections Affect Male Fertility? Latest Facts and Perspective
Authors: Bergholz Werner , Steger Klaus
Published: March 2023

Background: Based on available data on male fertility adverse effects after COVID-19 injections, we draw the reader´s attention to open questions and undeniable risks of the new RNA-based vaccine technology. Methods: Review and reanalysis of published data on pre- and post-injection semen analyses. Evaluation of UK Yellow Card and US VAERS databases for male fertility adverse effects and of the German deStatis database for monthly live birth rates after start of the governmental vaccination program. Results: The deStatis database demonstrates a time shift of exactly nine months between the start of the governmental vaccination campaign (April 2021) and an abrupt decline in live births (January 2022). Frequency of male fertility adverse effects is approx. 100 times lower than that of female fertility. Remarkably, report numbers per one million doses are similar between AstraZeneca and BionTech/Pfizer, but significantly increased for Moderna despite overall numbers of administered doses are smaller than that of the other two manufacturers. Both increase in and correlation between erectile dysfunction and heart failure could be demonstrated. Review and reanalysis of published data on pre- and post-injection semen analyses identified a number of limitations of the currently available studies. Conclusion: There remain still far more questions than answers. Due to the principle “primum non nocere,” any new medical therapy must be banned until harmlessness beyond doubt has been proven. Most importantly, it must be realized that the active ingredient of RNA-based vaccines is not simply mRNA promoting the synthesis of a nota bene viral specific protein, but modRNA specifically designed for longevity and encapsulated in LNPs to bypass biological barriers and get access to all cells, possibly also germ cells. As mRNA is involved in regulation of gene expression, cells have mechanisms at hand to silence mRNA species not required, however, theses protective mechanisms will not work with modRNA.
Molecular Diversity and Characteristics of KRAS Mutations in Colorectal Cancers
Authors: Kaur Kaler Amrit , Dharut Omkar , Umarji Smitha , Limaye Shweta , Kulkarni Bijal , Hastak Meenal , Athikari Nivetha , Tiwarekar Yash , Rane Samrudhi , Nikam Ankita , Sheikh Imraan , Goyle Sandeep
Published: March 2023

Background: KRAS oncogene is involved in colorectal carcinogenesis in 22 to 45% of cases. KRAS mutations can render Epidermal Growth Factor Receptor (EGFR) inhibitors ineffective. The present study is aimed to determine the molecular diversity, frequency, and characteristics of KRAS mutations in metastatic Colorectal Cancer (mCRC). The gene KRAS contains 4 coding exons and 1 non-coding exon, of which exon 2 has the highest mutation rate, which is directly associated with the occurrence of poor prognosis and drug resistance. Codon 12, 13, 61 are common KRAS mutations. The most prevalent KRAS mutation observed was codon 12-G12D mutation where Glycine is changed to Aspartic acid. Materials and Methods: A retrospective study was conducted on both in-situ and metastatic colorectal cancers that were registered for KRAS gene mutation testing in Department of Molecular Pathology and Genomics, Kokilaben Dhirubhai Ambani Hospital & Medical Research Institute, from January 2016 to January 2022. KRAS mutations studies were carried out in primary and metastatic 87 patients of colorectal cancers. The samples contained 37 women aged 25-80 years and 50 men aged 29-77 years. Formalin fixed and paraffin embedded tissue samples were evaluated using Sanger sequencing and statistical analysis was carried out. Results: KRAS mutations were demonstrated in 26 cases of 87 patients (29.88%). Of the 26 cases, the substitution nucleotide variations as point mutations were as follows: Codon 12-18 cases (69%), codon 13-4 cases (15%), codon 61-2 cases (8%), codon 146-1 case (4%), and codon 10-1 case (4%). The Codon 12 mutations were detected as follows: G12D-9 cases (50%), G12V-3 cases (17%), G12A-3 cases (17%), G12S-2 cases (11%), G12C-1 case (5%); Codon 13 showed all 4 mutations (4%) in G13D. KRAS mutations were found to be more frequent in elderly age group. Most m-KRAS tumors were located in sigmoid colon and rectum (left sided/distal colon), although, the mutations were spread across including ascending colon (right sided/proximal colon) and rarely in jejunum too. The TNM stage showed majority (50%) of KRAS mutations in stage IV, and 20% of cases in stage II and III each. Conclusion: In this series, 29% of colorectal cancer tissue samples had KRAS mutations. Their frequency and distribution showed majority mutations on left sided/distal colon, elderly population, more common in females and presented at an advanced stage. There was no clinicopathological significance to histomorphology. Understanding KRAS mutations in different aspects can give a better comprehensive understanding of KRAS associated CRCs.
Parameters Optimization of Palm Oil Biodiesel Production at Various CaO Concentrations Using Response Surface Methodology
Authors: Abdul Hadi  , Nur Fadzila Mohamad  , Mahidin
Published: March 2023

The transesterification of biodiesel using heterogeneous catalysts has recently caught interest because of its potential to overcome the limitations of homogeneous catalysts. Amongst the heterogeneous catalysts, CaO is well known for its superiority in the transesterification process due to its effectiveness, low cost, and low solubility in methanol. The paper covers the analysis of the transesterification process variables to identify the optimum condition of the process. The effect of process variables, which are catalyst concentration, methanol to oil molar ratio, and reaction temperature, and the interaction between variables on the yield of biodiesel from the esterification of palm oil using CaO catalyst was studied. Response Surface Methodology based on a three-variable central composite design was executed to optimize the process variables. It was found that the concentration of the catalysts is the primary variable affecting the reaction, the molar ratio of methanol to oil is the secondary and the temperature is the ternary. While the interaction between the two variables is not significant in the production of the biodiesel yield. The optimum yield of biodiesel of 98.56% was obtained at a catalyst concentration of 9.63 wt%, methanol to oil ratio of 15.30:1, and reaction temperature of 64.40 °C.
The Structural and Magnetic Transition Behaviour Analysis of La0.7Pb0.3MnO3 Perovskite-Type Manganites
Authors: Muhammad Afiq Ikhwan Zainuddin  , Adlin Abdul Rahim  , Zakiah Mohamed
Published: March 2023

The perovskite structure of La0.7Pb0.3MnO3 has been investigated. The sample has been prepared using the solid-state method. The structural analysis of the sample was carried out by using X-ray diffraction (XRD). The Rietveld refinement technique was applied to refine and determine the structural parameters of the sample. The XRD analysis shows that the compound exhibits a single phase and is crystalized in a rhombohedral structure with a space group of R-3c. The tolerance factor of the sample was calculated to determine the stability of the structure. The visualisation of the sample structure using VESTA software indicates the formation of the MnO6 octahedral structure. The FTIR revealed the absorption band of the sample is around 496 cm-1, corresponding with the stretching vibration of the Mn-O bond. The AC susceptibility and Vibrating-sample Magnetometer (VSM) were done to study the magnetic properties of the sample and confirm the transition from ferromagnetic (FM) to paramagnetic (PM) at 298K with a maximum value of magnetization of 37.77 emu/g.
Komunikasi Persuasif Dalam Menangani Keluhan Pelanggan Di Perusahaan Daerah Air Minum Tirta Bumi Wibawa Kota Sukabumi
Authors: Pujiastuti Yanti Lestari
Published: March 2023

Every product or service company that competes in the marketing order is increasingly numerous and diverse, resulting in competition among companies to meet the desires of consumers and provide service satisfaction to consumers. One of the actions to provide satisfaction to consumers is to provide services for consumers preferably because in essence the purpose of the business is to make consumers satisfied. Persuasive communication can be used as a direction of where and how the survival of a company, this is because one of the supports for the progress of a company depends on the balance of internal and external communication of the company. The approach taken in this research is to use a qualitative approach with descriptive methods. In arguing and showing evidence, an employee is required to have good intelligence. One of them is the intelligence of dealing with consumer complaints. Regarding the psychological attractiveness of an employee in customer relations, of course, it is important, such as verbal communication which is an attraction in handling customer complaints. verbal communication used by Company employees is good. In relation to the appeal of credibility in handling customer complaints at the Regional Drinking Water Company Tirta Bumi Wibawa Kota Sukabumi, it is clear and in accordance with the situation in the community, seen from the appearance and responses of customers who have made complaints to the head office and used as informants in this study.
A XII Conferência Nacional de Assistência Social : método e conteúdo em período de pandemia
Authors: Alencar Joana Luiza Oliveira
Published: March 2023

Descreve esse processo, incialmente deliberado em 2019, foi reconvocado e realizado em 2021, já sob os efeitos da covid-19. A pandemia afetou não apenas a organização das etapas como também apareceu nos resultados das discussões ocorridas nos eixos temáticos (Alencar e Avelino, no prelo).
The 16th Annual Conference on Planning Law and Property Rights (PLPR), Ghent, Belgium, 4–8 July 2022
Authors: Özkan Başak Aycan , Davids Peter R.
Published: March 2023

This article was published open access under a CC BY licence:
https://creativecommons.org/licences/by/4.0
.
Near-infrared and Optical Nebular-phase Spectra of Type Ia Supernovae SN 2013aa and SN 2017cbv in NGC 5643
Authors: Kumar Sahana , Hsiao Eric Y. , Ashall C. , Phillips M. M. , Morrell N. , Hoeflich P. , Burns C. R. , Galbany L. , Baron E. , Contreras C. , Davis S. , Diamond T. , Förster F. , Graham M. L. , Karamehmetoglu E. , Kirshner R. P. , Koribalski B. , Krisciunas K. , Lu J. , Marion G. H. , Pessi P. J. , Piro A. L. , Shahbandeh M. , Stritzinger M. D. , Suntzeff N. B. , Uddin S. A.
Published: March 2023

We present multiwavelength time-series spectroscopy of SN 2013aa and SN 2017cbv, two Type Ia supernovae (SNe Ia) on the outskirts of the same host galaxy, NGC 5643. This work utilizes new nebular-phase near-infrared (NIR) spectra obtained by the Carnegie Supernova Project-II, in addition to previously published optical and NIR spectra. Using nebular-phase [Fe ii] lines in the optical and NIR, we examine the explosion kinematics and test the efficacy of several common emission-line-fitting techniques. The NIR [Fe ii] 1.644 μm line provides the most robust velocity measurements against variations due to the choice of the fit method and line blending. The resulting effects on velocity measurements due to choosing different fit methods, initial fit parameters, continuum and line profile functions, and fit region boundaries were also investigated. The NIR [Fe ii] velocities yield the same radial shift direction as velocities measured using the optical [Fe ii] λ7155 line, but the sizes of the shifts are consistently and substantially lower, pointing to a potential issue in optical studies. The NIR [Fe ii] 1.644 μm emission profile shows a lack of significant asymmetry in both SNe, and the observed low velocities elevate the importance for correcting for any velocity contribution from the host galaxy’s rotation. The low [Fe ii] velocities measured in the NIR at nebular phases disfavor progenitor scenarios in close double-degenerate systems for both SN 2013aa and SN 2017cbv. The time evolution of the NIR [Fe ii] 1.644 μm line also indicates moderately high progenitor white dwarf central density and potentially high magnetic fields.
Magnetic Reconnection as the Driver of the Solar Wind
Authors: Raouafi Nour E. , Stenborg G. , Seaton D. B. , Wang H. , Wang J. , DeForest C. E. , Bale S. D. , Drake J. F. , Uritsky V. M. , Karpen J. T. , DeVore C. R. , Sterling A. C. , Horbury T. S. , Harra L. K. , Bourouaine S. , Kasper J. C. , Kumar P. , Phan T. D. , Velli M.
Published: March 2023

We present EUV solar observations showing evidence for omnipresent jetting activity driven by small-scale magnetic reconnection at the base of the solar corona. We argue that the physical mechanism that heats and drives the solar wind at its source is ubiquitous magnetic reconnection in the form of small-scale jetting activity (a.k.a. jetlets). This jetting activity, like the solar wind and the heating of the coronal plasma, is ubiquitous regardless of the solar cycle phase. Each event arises from small-scale reconnection of opposite-polarity magnetic fields producing a short-lived jet of hot plasma and Alfvén waves into the corona. The discrete nature of these jetlet events leads to intermittent outflows from the corona, which homogenize as they propagate away from the Sun and form the solar wind. This discovery establishes the importance of small-scale magnetic reconnection in solar and stellar atmospheres in understanding ubiquitous phenomena such as coronal heating and solar wind acceleration. Based on previous analyses linking the switchbacks to the magnetic network, we also argue that these new observations might provide the link between the magnetic activity at the base of the corona and the switchback solar wind phenomenon. These new observations need to be put in the bigger picture of the role of magnetic reconnection and the diverse form of jetting in the solar atmosphere.
A Bayesian Analysis of Technological Intelligence in Land and Oceans
Authors: Lingam Manasvi , Balbi Amedeo , Mahajan Swadesh M.
Published: March 2023

Current research indicates that (sub)surface ocean worlds essentially devoid of subaerial landmasses (e.g., continents) are common in the Milky Way and that these worlds could host habitable conditions, thence raising the possibility that life and technological intelligence (TI) may arise in such aquatic settings. It is known, however, that TI on Earth (i.e., humans) arose on land. Motivated by these considerations, we present a Bayesian framework to assess the prospects for the emergence of TIs in land- and ocean-based habitats (LBHs and OBHs). If all factors are equally conducive for TIs to arise in LBHs and OBHs, we demonstrate that the evolution of TIs in LBHs (which includes humans) might have very low odds of roughly 1 in 103 to 1 in 104, thus outwardly contradicting the Copernican principle. Hence, we elucidate three avenues whereby the Copernican principle can be preserved: (i) the emergence rate of TIs is much lower in OBHs, (ii) the habitability interval for TIs is much shorter in OBHs, and (iii) only a small fraction of worlds with OBHs comprise appropriate conditions for effectuating TIs. We also briefly discuss methods for empirically falsifying our predictions and comment on the feasibility of supporting TIs in aerial environments.
Advanced γ-Ray Emission Studies of G15.4+0.1 with Fermi-LAT: Evidence of Escaping Cosmic Rays Interacting with Surrounding Molecular Clouds
Authors: Li Yuan , Xin Yuliang , Liu Siming , He Yu
Published: March 2023

We present an analysis of γ-ray emission in the direction of supernova remnant (SNR) G15.4+0.1 with 13 yr Fermi Large Area Telescope data. There are three point-like GeV sources in this region: one is spatially coincident with the TeV source HESS J1818-154 and is interpreted as the counterpart of HESS J1818-154. Its γ-ray spectrum can be well fitted by a single power law with an index of 2.3. The other two sources with log-parabola spectra are spatially coincident with dense regions of surrounding molecular clouds revealed by CO observations. Their γ-ray emission originates from hadronic π
0 decay due to inelastic collisions between nuclei in the clouds and cosmic rays accelerated in and escaping from SNR G15.4+0.1. The total energy of the escaping protons is about 1048 erg, assuming a point-like instantaneous injection. However, the inferred diffusion coefficients are lower than the typical Galactic value.
Relativité de la qualité du marché des actions : cas des marchés boursiers du Maghreb
Authors: Nivoix Sophie , Ouchrif Fatimazahra
Published: March 2023

Le concept de qualité du marché des actions s’avère souvent imprécis et son étude académique se limite aux marchés développés. La situation des pays émergents, et en particulier ceux du Maghreb, n’a jamais fait l’objet d’une analyse approfondie. C’est pourquoi cette recherche vise à analyser la perception de la qualité par les opérateurs de ces marchés. Notre étude qualitative dans trois pays (Maroc, Tunisie et Algérie) repose sur 26 entretiens avec différents types d’opérateurs, sur la période 2018-2022. Nous observons que la qualité du marché est une notion multidimensionnelle, l’efficience et la liquidité étant ses deux composantes majeures. Quant à la volatilité, elle apparaît comme une conséquence des deux autres composantes.
Activisme actionnarial et responsabilité sociale de l’entreprise : étude empirique sur le marché français
Authors: Miloud Tarek , Cabrol Matthieu
Published: March 2023

L’objectif de la recherche est d’examiner l’influence de l’activisme actionnarial et de la présence d’investisseurs institutionnels sur la performance RSE (Responsabilité Sociale des Entreprises) d’entreprises cotées françaises, au cours de la période 2010-2020. L’activisme actionnarial est mesuré par le pourcentage de votes en faveur d’une proposition RSE lors des assemblées générales. Nos résultats indiquent que l’activisme ainsi défini et la présence de détenteurs de blocs n’ont finalement pas d’influence sur la performance RSE. Seule la présence d’investisseurs institutionnels au conseil d’administration a un effet positif direct. Certaines variables contrôlées comme le niveau d’internationalisation de l’entreprise et la présence des femmes au sein des conseils d’administration semblent favoriser la performance RSE de l’entreprise.
Multinationales : en finir avec l’impunité ?
Authors: Okenda Jean-Pierre
Published: March 2023

Riche en ressources naturelles, la République démocratique du Congo (RDC) figure parmi les cinq pays les plus pauvres au monde. La gestion prédatrice par l’élite et les multinationales est la cause principale de ce paradoxe. L’efficacité du « devoir de vigilance » est mise à rude épreuve face à la faiblesse de l’État congolais et à l’asymétrie entre l’engouement pour cette initiative au Nord et le désintérêt au Sud.
Multinationales : en finir avec l’impunité ?
Authors: Gurumurthy Anita , Chami Nandini , Peeters Olivier
Published: March 2023

Les multinationales du numérique prospèrent grâce au développement des nouvelles technologies et à l’exploitation massive des données. Les pratiques frauduleuses et les violations des droits humains commises par ces méga-entreprises « intelligentes » exigent néanmoins de s’attaquer à l’obsolescence des réglementations et d’œuvrer à une gouvernance numérique mondiale démocratique qui garantisse une capacité d’action aux pays du Sud.
Disjoint union of fuzzy soft topological spaces
Authors: Atay Arife
Published: March 2023

In this work, sums of fuzzy soft topological spaces are defined with free union of a pairwise disjoint non-empty family of fuzzy soft topological spaces. Firstly, we give general information of fuzzy soft topological spaces. Then, we define free union of fuzzy soft topological spaces and disjoint union topology of fuzzy soft topological spaces. We call the free union of a pairwise disjoint non-empty family of fuzzy soft topological spaces the sum of fuzzy soft topological spaces. We show what are the interchangeable properties between fuzzy soft topological spaces and the sum of fuzzy soft topological spaces. For example, there are fuzzy soft interior, fuzzy soft closure, fuzzy soft limit points. Also, we provide some properties showing the relationships between fuzzy soft topological spaces and their sums. Some of these are fuzzy soft base, fuzzy soft sequences, fuzzy soft connected-disconnected, fuzzy soft compact spaces. Also, part of the research for this article is work on fuzzy soft convergence on fuzzy soft topological sum. With this paper, some results, theorems and definitions for fuzzy soft topological sum have been acquired with the help of results, theorems and definitions given in previous studies about fuzzy soft topological spaces.
Existence of periodic solutions for a class of $ (\phi_{1}, \phi_{2}) $-Laplacian discrete Hamiltonian systems
Authors: Deng Hai-yun , Zhou Jue-liang , He Yu-bo
Published: March 2023

In this paper, we consider the existence of periodic solutions for a class of nonlinear difference systems involving classical $ (\phi_{1}, \phi_{2}) $-Laplacian. By using the least action principle, we obtain that the system with classical $ (\phi_{1}, \phi_{2}) $-Laplacian has at least one periodic solution when potential function is $ (p, q) $-sublinear growth condition, subconvex condition. The results obtained generalize and extend some known works.
Poésie dans les bulles : la Divine Comédie de la terza rima aux fumetti
Authors: Martin-Mercier Sylvie
Published: March 2023

En s’appuyant sur trois adaptations en bande dessinée de la Divine Comédie, cet article vise à mettre en évidence la variété des stratégies de citation du texte original. Il analyse également les effets produits par les opérations de transcodage. En insérant les tercets de Dante dans une nouvelle œuvre, ces procédés, loin de se résumer à un simple hommage au texte source, transforment sa matérialité graphique. Ils le font ainsi entrer en résonance avec un objet culturel contemporain. Émerge alors une signification nouvelle et une relation au lecteur différente.
Nicole Bergk Pinto, Étude et édition critique du Tournoiement Antecrist : dit allégorique attribué à Huon de Mery
Authors: Pinto Nicole Bergk
Published: March 2023

Le Tournoiement Antecrist est un poème allégorique, composé vers 1235 par un clerc prénommé Huon. Tout en racontant le combat spirituel entre le Bien et le Mal, l’auteur a su créer une œuvre novatrice qui n’exclut ni la culture profane, ni l’humour. Conservé dans un nombre relativement élevé de manuscrits (10 manuscrits complets et 2 fragments), qui attestent de son succès, le poème est considéré comme un des textes fondateurs de l’écriture allégorique en langue française. Malgré son importance culturelle, le Tournoiement demeurait relativement mal connu de nos jours. Jusqu’à présent, il n’existait pas d’édition critique fiable de l’œuvre. Cela explique sans doute en partie pourquoi les études littéraires restaient encore peu nombreuses et relativement peu approfondies. Nos recherches ont tenté de remédier à cette situation en réalisant une nouvelle édition et une étude littéraire approfondie qui permettent de mieux connaître et comprendre l’œuvre et sa place dans l’histoire littéraire. Basée sur l’examen méticuleux de l’ensemble des témoins, l’édition fournit un texte critique, accompagné d’un apparat complet et d'une étude détaillée de la tradition manuscrite, et complétée par des études linguistiques, des notes critiques, un glossaire et des index. Notre étude littéraire analyse la composition et le style du poème, les complexes liens intertextuels qu’il tisse avec d’autres œuvres et les traces de sa réception, dans le but d’éclairer en profondeur une œuvre dont l’intérêt littéraire et l’importance esthétique étaient déjà reconnus, mais pas encore pleinement mesurés.
From Desegregation to Resegregation
Authors: McMillian Effie G. , Sturdivant Brooksie B.
Published: March 2023

Exploring the history of systemic racism rooted in longstanding policies, practices, and unfair treatment of African Americans can explain present-day disproportionality. Desegregating schools following the 1954 Brown v. Board decision was long, arduous, and contentious. Despite desegregation efforts, the return to neighborhood schools, residential segregation, court rulings, and district student assignment and choice plans, school segregation has increased. Rumberger and Palardy argue that students in segregated schools are primarily poor, and that socioeconomic status significantly affects student achievement. Furthermore, children who are experiencing poverty are at greater risk of encountering trauma and barriers to maximizing educational opportunities for success. In this chapter, the authors explore these traumatic experiences, which are prevalent in segregated areas of concentrated poverty. The authors highlight the need for authentic integration for access and trauma-informed practices to mitigate the effects of acute and chronic stress and foster resilience.
Medical Visualization from Hospital in Kupang City Based on Visualization Toolkits
Authors: Ngana Frederika Rambu , Dima Ruth Aryati Rue , Lapono Laura Anastasi Seseragi , Louk Andreas Christian
Published: March 2023

Medical visualization requires interdisciplinary groups of researchers to analyze and explore medical data. Visualizing medical data can use open-source visualization software to avoid administration effort in medical visualization collaboration works. Visualization Toolkits (VTK) is a free, open source for medical visualization. VTK has been used to reconstruct medical images. However, few studies have used VTK to visualize DICOM data from Computed Tomography (CT) scan images using local hospital data in Indonesia. This study aims to reconstruct DICOM data from CT scan of the local hospital in Kupang city, Province Nusa Tenggara Timur, Indonesia. We used VTK to visualize the CT scan images of the head, thorax, and abdomen into two-dimensional (2D) and three-dimensional (3D) images. The DICOM data was visualized first in 2D, and then it was reconstructed into 3D using ray casting and volume rendering algorithm on VTK 8.2. The VTK was built on C++ and Visual Studio 2017. We have successfully demonstrated VTK to visualize 2D and 3D CT scan data from the local hospital in Kupang city. In the future, VTK has the potential to be used by a group of researchers using local hospital data in Indonesia to visualize 2D and 3D CT scan images.
Thermoelectric Application of TEG1-241-1.4-1.2 for Power Generation from Low Temperature Geothermal Fluid
Authors: Marpaung Harapan , Singarimbun Alamta , Srigutomo Wahyu , Lasmi Ni Ketut
Published: March 2023

Thermoelectric-based on Thermoelectric Generator (TEG) is a method of converting heat energy into electrical energy directly if there is a temperature difference (∆T) between the hot side temperature (Th) and the cold side temperature (Tc) of the TEG. Compared to conventional energy conversions such as steam turbines, this thermoelectric technology has no moving parts, is compact, quiet, highly reliable, environmentally friendly, and operated for long periods with minimal maintenance. This study aims to develop TEG technology as a means of converting heat energy from geothermal sources, especially those with medium and low temperatures (< 180 °C). The method used in this research is to conduct experiments to obtain the ideal TEG characteristics for use in medium and low temperature geothermal conditions. To achieve this goal, a characteristic test was conducted for five types of TEG with criteria including a maximum operating temperature of 200 °C. The parameters that measured in this experiment are temperature T, voltage V, current I and electric power P. Based on data, the results is TEG1-241-1.4-1.2 is the most optimal power that produce output power 6.5 Watt at 150 °C.
Response Formation of Cattleya Orchid Leaf Callus (Cattleya Sp.) with the Addition of 2.4 Dichlorophenoxy Acetic Acid and 6-Benzyl Amino Purine In Vitro
Authors: Hariyadi Itra , Harahap Fauziyah , Silitonga Melva
Published: March 2023

Orchid Cattleya sp. has a very high commercial value in the market both locally and internationally. Although the price of the orchid tends to be expensive, the value it has is much more expensive. So cattleya is always a top priority for hobbyists and collectors [1]. Cattleya is one of the orchid genera that have flowers with large sizes and is known as "The Queen of Orchids" because it has the beauty of color variations in its flowers [2]. In addition to having beauty in its flowers, bright flower color, and fragrant smell, Cattleya Orchid in general has a large flower size compared to other orchid flowers [3]. This study aimed to determine the best combination for callus growth from the orchid leaf explant Cattleya sp. with the combination of media using the ingredients MS + 6-Benzyl Amino Purine (0; 0.3; 0.6 ppm) and 2.4 Dechlorophenoxy Acetic Acid (0; 1; 2; 3 ppm) with three repetitions for each treatment. The data from the study showed that the best concentration to spur the growth of the callus of the explanatory orchid leaves of Cattleya sp. At the treatment of 2.4-D 1 ppm + BAP 0.6 ppm with a percentage of callus formed about 60% with a green callus color and compact callus texture and medium callus growth (++).
Simulation of the Response of Multi-Story Buildings with Concrete-Silica Fume and Concrete-Liquid Carbon Dioxide
Authors: Nasution Budiman , Nasution Habibi Azka , Amdani Kahirul , Kadri Muhammad , Sari Silvia Dona , Barus Eviyona Laurenta Br , Nst Dina Alfariza , Suryani Laili , Afala Iswari
Published: March 2023

Ordinary Portland Cement (OPC) used in building structures has a negative impact. The presence of CO2 emissions produced becomes very dangerous. To reduce this impact, materials that are more environmentally friendly are used. Silica Fume and liquid carbon dioxide (CO2) are among them. In this study, silica fume and liquid carbon dioxide were used as a substitute for cement. The effect of the stiffness of the two materials and the earthquake lateral load was tested by looking at the response of the high-rise building. Through numerical simulations, we compare the mode shape, displacement of the structure, and the sheer force experienced by the structure.
Thermal Design Approach of a Shell and Tube Heat Exchanger for Pyrolysis-Vapor Condensations
Authors: Simanjuntak Janter Pangaduan , Tambunan Bisrul Hapis , Sihombing Junifa Layla , Riduwan Riduwan
Published: March 2023

This study aimed to design a condenser for a special application of condensing the vapor of pyrolysis process of hydrocarbon-based material such as plastic and biomass into liquid form or pyrolytic oil. Numerous condensers have been available in the market. However, a condenser cannot be selected and utilized directly for pyrolysis vapor condensation purposes. Before doing selection, the condenser must be designed first to meet the heat transfer requirements. In this work, the condenser was designed based on thermal analysis and validated with numerous published experimental data and the pyrolytic characteristics from related industry. A theoretical model is formulated for describing condensation of the pyrolysis vapor in the condenser to determine heat transfer requirement and the rate of condensation obtained. The effect of operating parameters such as cooling water rate in liters per minute (LPM) and temperature on the condensation rate was examined through an iterative procedure which rely to the heat transfer rate and the allowed pressure drop in the condenser. In this study, it was obtained that the highest cooling load is obtained when the flow rate of cooling water is 1.95 LPM. It was also obtained that the condenser effectiveness decreased of about 29.3 % with the ranges of cooling flow rate from 1.3 to 2.6 LPM