bluuebunny/crossref_metadata_2025 huggingface dataset:
ARTIFICIAL INTELLIGENCE: THE NEW ECONOMIC FACTOR
Authors: Levan Gabisonia Levan Gabisonia
Published: March 2024

The advent of Artificial Intelligence (AI) marks a significant shift in the economic landscape, akin to major industrial revolutions of the past. This article explores AI's multifaceted impact on various economic sectors, asserting its role as a novel economic factor. AI's contribution to enhancing productivity and efficiency is emphasized, alongside its transformative effect in automating and optimizing processes across industries. The paper discusses AI's role in driving innovation, influencing labor markets, revolutionizing data analysis, reshaping market competition, and altering consumer behavior. A systematic analysis of AI's integration into economic activities reveals its profound influence on labor dynamics, necessitating a reevaluation of workforce skills and job roles. AI's capabilities in processing and analyzing vast datasets have provided critical insights, driving strategic decisions in both business and governance. The evolution of AI has fostered new business models, particularly in technology-driven sectors, setting new benchmarks for operational efficiency and market competition. Furthermore, AI's impact on consumer behavior, through personalized marketing and enhanced customer service, indicates a significant shift in business-consumer interactions. This comprehensive exploration of AI's economic implications underscores the need for its recognition as a principal factor in economic theories and policy formulation. The article argues for the inclusion of AI as a new paradigm in the economic factor model, highlighting its potential to redefine traditional economic dynamics and its indispensability in future economic analyses.
Keywords: Artificial Intelligence, Economic Factor, Productivity, Innovation, Labor Markets, Data Analysis, Market Competition, Consumer Behavior.
Pengaruh Citra Merek, Kualitas Produk, dan Harga Terhadap Keputusan Pembelian Hijab Rabbani
Authors: Hanifah Nur , Amron Amron
Published: March 2024

This study examines and analyze the effect of Brand Image, Product Quality, and Price of purchasing decisions. The population used in this study are customers who use Rabbani product in Pemalang. This study uses multiple regression analysis method. The result of this study that the product quality variable have no direct effect on purchasing decision. However, brand image and price directly affects purchasing decisions. And the results of the study show that the overall all variables have a significant effect and have a simultaneous contribution on Rabbaniâ€™s purchasing decisions.Penelitian ini menguji dan menganalisis pengaruh Citra Merek, Kualitas Produk, dan Harga terhadap Keputusan Pembelian. Populasi yang digunakan dalam penelitian ini adalah pelanggan yang menggunakan produk Rabbani di Pemalang. Penelitian ini menetapkan metode analisis regresi berganda. Hasil penelitian menunjukkan jika variabel kualitas produk tidak berpengaruh langsung terhadap keputusan pembelian. Namun, citra merek dan harga secara langsung memengaruhi keputusan pembelian. Namun, secara simultan semua variabel berpengaruh signifikan dan memiliki kontribusi secara simultan terhadap keputusan pembelian Rabbani.
Arbitration Scandal, Intrigue and Inquiry: Commentary on the Judgement of the High Court of England and Wales in P&I Developments Limited vs Republic of Nigeria
Authors:   HSE University, Galperin Mikhail L. ,   Institute of Legislation and Comparative Law under the Government of the Russian Federation, Kostsov Vladimir N. ,   HSE University
Published: March 2024

The English court’s decision, which was published last year on 23 October, is described not merely as precedential but as historic in its impact. This decision is impactful not merely because it released the Nigerian state (the respondent in the arbitral award that was set aside by the English court) from the burden of paying a lion’s share of its forex reserves to a little known offshore entity, but also because this is perhaps the first case where suspicions about abusive procedural tactics and corruption during the arbitral proceedings became a self-sufficient ground to set aside a similar international arbitral award. This article uses the almost detective story that unfolded in this case as an opportunity to address broader issues of public policy, legal ethics and corruption in major international cases, to challenge the traditional understanding of adversarial proceedings and to address other problems that directly implicate the future of arbitration as a means of resolving investment disputes. These issues are also quite relevant for Russia considering the impending legal outcome in the long-running Yukos arbitration.
Naturalisation of Migrants: Current Trends
Authors:   Institute of State and Law, Russian Academy of Science, Vasilieva Tatiana A.
Published: March 2024

With the widespread recognition of the concept of human dignity and universal human rights standards, the rigid boundaries between the concept of citizen and alien are blurring. Many individuals reside outside the State of their citizenship on a long-term basis. Migrants cannot be viewed as a homogeneous community, but differ in terms of their states of origin, grounds, purposes and duration of stay, visa regimes, professional qualifications, and future migration plans. However, widespread transnational migration creates real problems for migrant receiving states due to the erosion of socio-cultural homogeneity of the population; an increase in the number of groups with different value systems living on the same territory; a fairly high proportion of migrants among those who break the law or are unemployed; the creation by some migrant communities of parallel economies, shadow social structures and the use of social norms of the country of origin in their relations. Rising tensions and clashes between migrants and natives are contributing to the tightening of state policies on migrant reception. Acquisition of citizenship is beginning to be more tightly coordinated with migration policy and considered in the light of social cohesion. The introduction of new criteria required for citizenship (linguistic, integration, economic) is largely oriented towards identifying culturally close economically self-sufficient migrants whose values are not particularly different from those shared by the majority in the host society. In the sphere of legal regulation, two factors significantly influence the level of naturalisation — the introduction of dual citizenship and the possibility of acquiring citizenship by birth on the territory of the country.
Interim Measures during Bidding in Bankruptcy Procedures
Authors:   Kutafin Moscow State Law University (MSAL), Alfimova Aleksandra S.
Published: March 2024

In Russia the number of bankruptcy cases remains at a consistently high level, while the vast majority of them are of a liquidation nature. Debtors’ property is massively sold at public bidding, the results of which are very difficult to challenge. So there is a need to use operational legal remedy — interim measures. Interim measures in bankruptcy cases are needed even more than in other cases, because they help to balance the many conflicting interests. The article contains analysis of measures that are applied by the antimonopoly authority and the court during bidding in bankruptcy. Also the author considers interim measures, which are provided during challenging bidding and distributing money received as a result of the sale of collateral. In addition, the article describes the consequences of a violation by the bankruptcy manager of interim measures and the possibility of compensation for losses caused by interim measures during bidding in bankruptcy. The author concludes that the skepticism of the legal community regarding the providing of interim measures during public bidding in bankruptcy cases is exaggerated, the courts are ready to apply them.
Administrative and Legal Regulation of Migration Relations in the Field of External Labour Migration
Authors:   North-West Branch of the Russian State University of Justice (St. Petersburg), Malyshev Evgeny A.
Published: March 2024

The globalisation of factors of economic development, the development of world economic relations is manifested, in particular, in the formation of the international labour market, stimulating the growth of external labour migration. These processes fully affect Russia and sharply actualise the need to improve legal regulation, a new level of institutional interaction of public administration bodies at the federal and regional levels on the regulation of external labour migration flows. The necessity of developing the concept of external labour migration is proved, which requires a systematic approach based on the “reverse” dichotomous analysis, which makes it possible to consider external labour migration as a single socio-legal phenomenon consisting of relatively autonomous, but organically connected outbound and inbound labour migration flows. Ensuring the national interests of Russia involves the search for an effective administrative and legal mechanism for the implementation of state policy in the field of external labour migration, developing in the unity of closely related outbound and inbound labour migration flows. The imperfection of migration legislation in the field of external labour migration requires its codification, development and adoption of a separate federal law “On external labour migration”.
Solar Energy Policies for Commercial Buildings in India: Experiences of Building Owners and Managers
Authors: Jain Meenal , Mital Meenakshi , Syal Matt
Published: March 2024

To fulfill the demands of a country that is fast developing and heavily reliant on fossil fuels, India’s energy sector has expanded rapidly. Since renewable energy sources are plentiful, limitless, and ecologically beneficial, they provide an alluring answer to the world’s mounting energy problems. Numerous initiatives have been taken in the direction of developing solar energy in all fields by the national and state-level governments in India. This study evaluates the various government initiatives for off-grid solar photovoltaic (SPV)/solar water heating (SWH) systems from the viewpoint of building owners and managers of commercial establishments in India. Building owners and managers rated environmental consciousness as the most important accelerator for installing SPV/SWH system. Limited financial and fiscal incentives from the government, limited sources of information with unclear, technical, and incomplete content, and government websites not being updated regularly were reported as the barriers hindering the installation of SPV/SWH systems in commercial establishments. The study thus identified gaps in the implementation of government initiatives and recommended improvements. The recommendations will go a long way in bringing all the stakeholders on the same page for the better functioning of the policy regime.
Study on the Efficacy of the Tibetan Medicine Er Shi Wu Wei Song Shi Pills Against Liver Fibrosis
Authors: Xiong Longhui , Zhou Weiguang , Wang Zhan , Cao Huan
Published: March 2024

To investigate the effects of Er Shi Wu Wei Song Shi Pills on chronic liver fibrosis, 40 male rats were randomly divided into the model, control, positive control, original formula, and original formula minus cinnabar and turquoise groups. The rats were injected subcutaneously with 40% carbon tetrachloride olive oil solution for 56 days to establish chronic liver fibrosis model, during which the model and control groups received equal amount of saline, while the other groups received the corresponding drugs by gavage. Serum parameters were measured, and superoxide dismutase level was determined. Hepatic histopathological changes were observed by hematoxylin-eosin staining and the extent of liver fibrosis was observed by Masson staining. Compared with the control group, the serum levels in the model rats were significantly higher. Compared with the model group, the serum levels of the rats in the original formula group and the original formula minus cinnabar and turquoise group were significantly lower and the area of liver fibrosis was significantly reduced. In conclusion, chronic hepatic fibrosis can be prevented and treated by Er Shi Wu Wei Song Shi Pills before and after prescription reduction, with the best effect in the original formula group.
ВПЛИВ ВІЙНИ НА ОСВІТУ: ФОРМУВАННЯ ТОЛЕРАНТНОСТІ ТА СТРЕСОСТІЙКОСТІ У СТУДЕНТІВ ЗАКЛАДІВ ФАХОВОЇ ПРОФЕСІЙНОЇ ПІДГОТОВКИ
Authors: Лапчинський В. В. , Горіховський М. В. , Оганесян В. С. , Кондрашов O.
Published: March 2024

Статтю присвячено дослідженню впливу війни на освіту та психологічний стан студентів закладів фахової підготовки осіб у Хмельницькій області. Розглянуто історичний контекст війни з її впливом на освітні процеси, встановлено взаємозв'язок між воєнними подіями та формуванням толерантності у студентів фахової підготовки. Незважаючи на труднощі, більшість студентів демонструють значну життєстійкість, чому сприяє їхня прихильність до освіти. Однак рівень комунікативної толерантності варіюється, що вказує на необхідності подальшого розвитку цієї навички в деяких студентів задля забезпечення гармонійних стосунків і мирного співіснування. Дослідження підкреслює, що в умовах війни такий цілеспрямований вид діяльності, як освіта, може сприяти життєстійкості молоді. Водночас, необхідні цільові втручання, включно з позанавчальними тренінгами по управлінні стресом, розвитку емоційного інтелекту, подолання стереотипів та опанування ефективної комунікації. На основі проведеного дослідження зроблено висновок про те, що війна має значний вплив на освіту та психологічний стан студентів, війна може призводити до зниження якості освіти, погіршення психологічного стану студентів, підвищення рівня стресу та тривоги.
Innovative pathways allow safe discharge of mild acute pancreatitis from the emergency room
Authors: Kothari Darshan J , Sheth Sunil G
Published: March 2024

Acute pancreatitis (AP) is a leading cause of gastrointestinal-related hospitalizations in the United States, resulting in 300000 admissions per year with an estimated cost of over $2.6 billion annually. The severity of AP is determined by the presence of pancreatic complications and end-organ damage. While moderate/severe pancreatitis can be associated with significant morbidity and mortality, the majority of patients have a mild presentation with an uncomplicated course and mortality rate of less than 2%. Despite favorable outcomes, the majority of mild AP patients are admitted, contributing to healthcare cost and burden. In this Editorial we review the performance of an emergency department (ED) pathway for patients with mild AP at a tertiary care center with the goal of reducing hospitalizations, resource utilization, and costs after several years of implementation of the pathway. We discuss the clinical course and outcomes of mild AP patients enrolled in the pathway who were successfully discharged from the ED compared to those who were admitted to the hospital, and identify predictors of successful ED discharge to select patients who can potentially be triaged to the pathway. We conclude that by implementing innovative clinical pathways which are established and reproducible, selected AP patients can be safely discharged from the ED, reducing hospitalizations and healthcare costs, without compromising clinical outcomes. We also identify a subset of patients most likely to succeed in this pathway.
EKSPLORASI E-GOVERNANCE: MENJAWAB TANTANGAN IMPLEMENTASI E-COMMERCE ERA VUCA DI INDONESIA
Authors: Astuti Ismaya Indri , Sulisman Alya Nurayu , Tarigan Sri Ropika Dana Br
Published: March 2024

Transformasi Digital telah menjadi suatu pendorong utama dalam meralisasikan ambisi indonesia emas di tahun 2045. Ekonomi digital merupakan sektor utama dalam peningkatan pertumbuhan yang signifikan, khususnya dalam sektor perdagangan elektronik atau e-Commerce. Pertumbuhan e-commerce di Indonesia tidak hanya menjanjikan peluang, namun juga turut menyumbang tantangan yang kompleks di tengah dinamika era VUCA (Volatility, Uncertainty, Complexity, dan Ambiguity). Penelitian ini ditulis menggunakan metode kualitatif dengan pendekatan deskriptif, Sumber data yang digunakan dalam penelitian ini diperoleh melalui studi literatur. Penelitian ini bertujuan untuk menganalisis peran kursial dari e-governance dalam menciptakan lingkungan yang kondusif bagi pertumbuhan ekonomi digital, sekaligus menjawab tantangan kompleks yang timbul dalam menghadapi perubahan cepat dan ketidakpastian di era VUCA. kehadiran e-commerce di Indonesia telah menciptakan ketidakpastian hukum atau regulasi untuk menaungi gejolak pasar digital, perubahan yang cepat dari informasi dan teknologi menimbulkan kekhwatiran keamanan data pada masyarakat. Eksplorasi e-governance dapat dilihat dari tiga elemen utama yaitu support, capacity, dan value. Ketiga elemen tersebut dapat menjawab bagaimana e-governanace digunakan dalam menghadapi tantangan ekosistem e-commerce di era Vuca Indonesia.
DAMPAK GAYA KEPEMIMPINAN DAN MOTIVASI KERJA TERHADAP KINERJA PEGAWAI PADA PT PEGADAIAN CABANG KEUTAPANG ACEH BESAR
Authors: Yusuf Yuslaidar , Ariyanto Agus , Fadhil Muhammad
Published: March 2024

Tujuan dalam penelitian ini adalah untuk mengetahui dan menganalisis dampak gaya kepemimpinan dan motivasi kerja terhadap kinerja pegawai  pada PT Pegadaian  Cabang Keutapang, Aceh Besar. Jumlah sampel penelitian ini sebanyak 32 responden Data penelitian dikumpulkan melalui kuisioner, dan studi dokumentasi. Pengujian hipotesis menggunakan analisis regresi linier berganda, uji F dan uji t dimaksud untuk mengetahui secara simultan dan secara parsial pengaruh variabel independen terhadap variabel dependen pada tingkat kepercayaan 95% (α = 0,05). Hasil penelitian berdasarkan uji simultan menunjukan bahwa variabel Gaya kepemimpinan dan Motivasi Kerja berpengaruh signifikan terhadap Kinerja Pegawai PT Pegadaian di Cabang Keutapang, Aceh Besar. Sedangkan secara parsial variabel Gaya kepemimpinan dan Motivasi Kerja berpengaruh signifikan terhadap Kinerja Pegawai PT Pegadaian Cabang Keutapang, Aceh Besar dan variabel Gaya kepemimpinan mempunyai pengaruh dominan dalam meningkatkan Kinerja Pegawai PT Pegadaian  Cabang Keutapang, Aceh Besar.
Control del mallado con FEM para caracterizar una junta mecánica en aplicaciones de investigación y prototipaje
Authors: González-Sosa Jesús Vicente , Ávila-Soler Enrique
Published: March 2024

Una de las características clave de los sellos mecánicos es lograr una estanqueidad efectiva entre dos piezas mecánicas para evitar el desplazamiento y las fugas de refrigerante en aplicaciones industriales. Actualmente la mayoría de estos elementos se producen utilizando neopreno, cartón comprimido, papel alquitranado, grafito laminado, por lo que buscamos producirlos utilizando materiales ABS y PLA. Para el diseño se utilizó software CAD con licencia educativa destinada a educadores e investigadores, posteriormente se realiza un análisis de elementos finitos según las especificaciones del producto. En este sentido, se ha identificado la importancia del FEM como herramienta de evaluación en el contexto de esta tendencia de utilizar tecnologías innovadoras para la investigación. Como parte de los resultados, los datos obtenidos permiten seleccionar tanto las variables como las propiedades físicas de la biela y pueden ser utilizados para desarrollar proyectos y estudios de esta naturaleza aplicables en casos de estudio relacionados con la Ingeniería mecánica, mecatrónica, industrial y electrónica. Finalmente, las variables Factor de Seguridad (FS), Von Mises Stress (VM) y YZ Stress, se analizan después de la simulación mediante FEM, proporcionando un rango de valores para su uso en aplicaciones de ingeniería con diferentes técnicas en las que se utilizan bielas, FS [ 0,55, 12,26], VM [1,63, 36,45], YZ [-1,36, 10,13]. En cuanto a los demás resultados presentados en este estudio, el coeficiente de correlación se utiliza como parte estadística con gráficos para evaluar la simulación,  la dependencia de variables y parámetros relevantes para el estudio de caso, por lo que se observó una fuerte relación entre las variables; esfuerzo plano,  deformación, desplazamiento y el esfuerzo de Von Mises, cuyos  valores oscilan entre 0,87 y 0,99, mostrando una fuerte relación  entre estas variables y, para las demás, se debe considerar mejorar la relación y aumentar el coeficiente.
Influence Of Social Media Marketing Instagram on Interest in Buying Books at Gramedia.Com
Authors: Aulia Nahda Ratu , Barkah Cecep Safa’atul
Published: March 2024

This study aims to determine the effect of social media marketing on book buying interest in Gramedia.com, given the increasing number of active social media users in Indonesia and the role of social media, especially Instagram, in company marketing activities. The object of this research consists of independent variables, namely social media marketing and the dependent variable of buying interest. The method used is quantitative with a descriptive verification approach and survey as a data collection tool. Analysis was carried out through simple linear regression, normality test, heteroscedasticity test, coefficient of determination, and hypothesis testing. The research population is Instagram followers @gramedia.com, with sampling using purposive sampling technique totaling 100 respondents. The results showed a positive influence between social media marketing and purchase intention, where the better the application of social media marketing, the higher the level of purchase intention. Based on hypothesis testing, it can be concluded that social media marketing significantly has a positive effect on buying interest in books at Gramedia.com.
Electroadicella unipetra sp. nov., a new fossil species of Leptoceridae (Insecta: Trichoptera) from Eocene Rovno amber
Authors: Melnitsky Stanislav I. , Ivanov Vladimir D. , Perkovsky Evgeny E. , Vasilenko Dmitry V.
Published: March 2024

A new caddisflies species Electroadicella unipetra sp. nov. (Leptoceridae) is described and illustrated from Rovno amber (upper Eocene, 36 million years old). Now the family Leptoceridae is represented by five named species among 38 named species of caddisflies known from Rovno amber.
Reducing Uncertainty Prior to Job Interviews Based on the Linkedin Profile of Achmad Zaky as a Potential Office Supervisor
Authors: Guslim Angga
Published: March 2024

The development of social media in everyday life is very rapid, both in personal and professional contexts. LinkedIn, as a social media with a professional concept, has been able to become an intermediary in interpersonal communication. The professional job interview process makes many candidates feel anxious before the selection process. Uncertainty Reduction theory becomes the author's reference in revealing the predictability of the job interview process by the number one leader in the company. This research aims to find out and analyze whether Achmad Zaky's LinkedIn profile account can reduce uncertainty during a job interview with him and to find out and analyze whether Achmad Zaky's LinkedIn profile account can predict the questions he will ask during the interview later. This research uses a qualitative method, which is a comprehensive analysis of all activities to all text and image data listed on his LinkedIn profile account through 3 former candidates who have been interviewed by Achmad Zaky. The results show the predictability of questions from Achmad Zaky in the job interview process, this includes his entire LinkedIn profile account in the form of a brief bio, work experience and community, education history, honorary awards and activities consisting of 7 articles and 180 posts during his tenure at the company.
Calidad del agua en microcuencas cafeteras
Authors: Rodríguez-Valencia Nelson , Quintero-Yepes Laura , Gómez-Zuluaga Gustavo Adolfo , Bohórquez Zapata Viviana Lorena , González-González Marisol , González-Durán Cristy Mayerly , Osorio-Ocampo Andrés Felipe , De Miguel García Ángel , Harmsen Joop
Published: March 2024

La calidad del agua es uno de los aspectos clave y uno de los objetivos de la política nacional para la gestión integral del recurso hídrico. Las recomendaciones realizadas pueden ser útiles para las autoridades ambientales pertinentes; la metodología aplicada ha demostrado ser útil para evaluar el impacto de la actividad cafetera sobre los cuerpos de agua.
Transferencia de tecnología y extensión rural
Authors: Jaramillo Carlos Mario
Published: March 2024

Una vez caracterizada la población se elaboraron planes de trabajo con el fin de proponer a los caficultores y sus familias la adopción de prácticas tecnológicas en sus fincas, así como su participación en proyectos de formación en temas clave para asegurar el adecuado manejo del recurso hídrico en las 25 microcuencas seleccionadas.
Análisis de paisaje: Efecto de las coberturas de la tierra sobre la contaminación producto de la fertilización del café microcuenca La Frisolera municipio de Salamina Caldas
Authors: Montes María Angélica , Urbina Luis Fernando , Calderón Rodrigo , De Miguel García Ángel
Published: March 2024

Este documento está dividido en tres apartados. El primero es una introducción al análisis de paisaje. El segundo apartado, hace referencia a las metodologías utilizadas para el análisis de paisaje y la propuesta metodológica. El tercer apartado, contiene la aplicación de la propuesta metodológica para implementar un análisis de paisaje en función del efecto del uso de la tierra.
Lerch $\Phi$ Asymptotics
Authors:   The University of Edinburgh, UK, Olde Daalhuis Adri B.
Published: March 2024

We use a Mellin-Barnes integral representation for the Lerch transcendent $\Phi(z,s,a)$ to obtain large $z$ asymptotic approximations. The simplest divergent asymptotic approximation terminates in the case that $s$ is an integer. For non-integer $s$ the asymptotic approximations consists of the sum of two series. The first one is in powers of $(\ln z)^{-1}$ and the second one is in powers of $z^{-1}$. Although the second series converges, it is completely hidden in the divergent tail of the first series. We use resummation and optimal truncation to make the second series visible.
Outflows Driven from a Magnetic Pseudodisk
Authors: Basu Shantanu , Sharkawi Mahmoud , Machida Masahiro N.
Published: March 2024

Outflows play a pivotal role in star formation as one of its most visible markers and a means of transporting mass, momentum, and angular momentum from the infalling gas into the surrounding molecular cloud. Their wide reach (at least thousands of astrnomical units) is a contrast to typical disk sizes (∼10–100 au). We employ high-resolution three-dimensional nested-grid nonideal magnetohydrodynamic (MHD) simulations to study outflow properties in the Class 0 phase. We find that no disk wind is driven from the extended centrifugal disk that has weak magnetic coupling. The low-velocity winds emerge instead from the infalling magnetic pseudodisk. Much of the disk actually experiences an infall of matter rather than outflowing gas. Some of the pseudodisk wind (PD-wind) moves inward to regions above the disk and either falls onto the disk or proceeds upward. The upward flow gives the impression of a disk wind above a certain height even if the gas is originally emerging from the pseudodisk. The PD-wind has the strongest flow coming from a disk interaction zone that lies just outside the disk and is an interface between the inwardly advected magnetic field of the pseudodisk and the outwardly diffusing magnetic field of the disk. The low-velocity wind exhibits the features of a flow driven by the magnetic pressure gradient force in some regions and those of a magnetocentrifugal wind in other regions. We interpret the structure and dynamics of the outflow zone in terms of the basic physics of gravity, angular momentum, magnetic fields, and nonideal MHD.
Proposed Resolution to the Solar Open Magnetic Flux Problem
Authors: Arge C. Nick , Leisner Andrew , Antiochos Spiro K. , Wallace Samantha , Henney Carl J.
Published: March 2024

The solar magnetic fields emerging from the photosphere into the chromosphere and corona are comprised of a combination of closed (field lines with both ends rooted at the Sun) and open (field lines with only one end at the Sun) fields. Since the early 2000s, the magnitude of total unsigned open magnetic flux estimated by coronal models has been in significant disagreement with in situ spacecraft observations, especially during solar maximum. Estimates of total open unsigned magnetic flux using coronal hole observations (e.g., using extreme ultraviolet or helium (He) I) are in general, in average agreement with the coronal model results and thus show similar disagreements with in situ observations. This paper provides a brief overview of the problem, summarizes the proposed explanations for the discrepancies, and presents results that strongly support the explanation that the discrepancy is due to dynamics at the open-closed boundary. These results are derived from the determination of the total unsigned open magnetic flux, utilizing the Wang–Sheeley–Arge model at a particular spatial resolution and different field-line tracing methods. One of these methods produces excellent agreement with in situ observations. Our results imply that strong magnetic fields in close proximity to active regions and residing near the boundaries of mid-latitude coronal holes are the primary source of the missing open flux. Furthermore, the results outlined here resolve many of the seemingly contradictory facts that have made the open-flux problem so difficult.
Exploring Spatial and Temporal Patterns in the Debrecen Solar Faculae Database: Part I
Authors: Elek Anett , Korsós Marianna B. , Dikpati Mausumi , Gyenge Norbert G. , Belucz Bernadett , Erdélyi Robertus
Published: March 2024

Photospheric faculae are markers of the solar magnetic field, appearing as bright regions along the edges of granules on the Sun’s surface. Using data from the Debrecen Solar Faculae Database, we investigated the spatiotemporal distribution of photospheric faculae between 2010 May 1 and 2014 December 31 and found the following. (i) At lower latitudes, there is an enhanced abundance of faculae appearing as stripes at given Carrington longitudes, which are interpreted as indicative of the presence of active longitudes. (ii) At higher latitudes, we identified so-called crisscross patterns of facular appearance. These patterns are likely the result of faculae in regions situated along the boundaries of supergranules. Last but not least, (iii) various periods of oscillatory phenomena were identified in this facular data set, including a longer periodic range consistent with the quasi-biennial oscillations and shorter ones with periods of 4–12 days. Our findings are supported by the visualization of a simple heuristic thought experiment and more complex dynamo simulations, strengthening the proposed interpretation of the three observed solar phenomena reported.
Magnetic Field Strength Effects on Nucleosynthesis from Neutron Star Merger Outflows
Authors: Lund Kelsey A. , McLaughlin Gail C. , Miller Jonah M. , Mumpower Matthew R.
Published: March 2024

Magnetohydrodynamic turbulence drives the central engine of post-merger remnants, potentially powering both a nucleosynthetically active disk wind and the relativistic jet behind a short gamma-ray burst. We explore the impact of the magnetic field on this engine by simulating three post-merger black hole accretion disks using general relativistic magnetohydrodynamics with Monte Carlo neutrino transport, in each case varying the initial magnetic field strength. We find increasing ejecta masses associated with increasing magnetic field strength. We find that a fairly robust main r-process pattern is produced in all three cases, scaled by the ejected mass. Changing the initial magnetic field strength has a considerable effect on the geometry of the outflow and hints at complex central engine dynamics influencing lanthanide outflows. We find that actinide production is especially sensitive to magnetic field strength, with the overall actinide mass fraction calculated at 1 Gyr post-merger increasing by more than a factor of 6 with a tenfold increase in magnetic field strength. This hints at a possible connection to the variability in actinide enhancements exhibited by metal-poor, r-process-enhanced stars.
Low-amplitude Solar-like Oscillations in the K5 V Star ϵ Indi A
Authors: Lundkvist Mia S. , Kjeldsen Hans , Bedding Timothy R. , McCaughrean Mark J. , Butler R. Paul , Slumstrup Ditte , Campante Tiago L. , Aerts Conny , Arentoft Torben , Bruntt Hans , Cardoso Cátia V. , Carrier Fabien , Close Laird M. , da Silva João Gomes , Kallinger Thomas , King Robert R. , Li 李 Yaguang 亚光 , Murphy Simon J. , Rørsted Jakob L. , Stello Dennis
Published: March 2024

We have detected solar-like oscillations in the mid-K-dwarf ϵ Indi A, making it the coolest dwarf to have measured oscillations. The star is noteworthy for harboring a pair of brown dwarf companions and a Jupiter-type planet. We observed ϵ Indi A during two radial velocity campaigns, using the high-resolution spectrographs HARPS (2011) and UVES (2021). Weighting the time series, we computed the power spectra and established the detection of solar-like oscillations with a power excess located at 5265 ± 110 μHz—the highest frequency solar-like oscillations so far measured in any star. The measurement of the center of the power excess allows us to compute a stellar mass of 0.782 ± 0.023 M
⊙ based on scaling relations and a known radius from interferometry. We also determine the amplitude of the peak power and note that there is a slight difference between the two observing campaigns, indicating a varying activity level. Overall, this work confirms that low-amplitude solar-like oscillations can be detected in mid-K-type stars in radial velocity measurements obtained with high-precision spectrographs.
Modeling X-Ray and Gamma-Ray Emission from Redback Pulsar Binaries
Authors: Sim Minju , An Hongjun , Wadiasingh Zorawar
Published: March 2024

We investigated the multiband emission from the pulsar binaries XSS J12270−4859, PSR J2039−5617, and PSR J2339−0533, which exhibit orbital modulation in the X-ray and gamma-ray bands. We constructed the sources’ broadband spectral energy distributions and multiband orbital light curves by supplementing our X-ray measurements with published gamma-ray results, and we modeled the data using intrabinary shock (IBS) scenarios. While the X-ray data were well explained by synchrotron emission from electrons/positrons in the IBS, the gamma-ray data were difficult to explain with the IBS components alone. Therefore, we explored other scenarios that had been suggested for gamma-ray emission from pulsar binaries: (1) inverse-Compton emission in the upstream unshocked wind zone and (2) synchrotron radiation from electrons/positrons interacting with the kilogauss magnetic field of the companion. Scenario (1) requires that the bulk motion of the wind substantially decelerates to ∼1000 km s−1 before reaching the IBS for increased residence time, in which case the formation of a strong shock is untenable, inconsistent with the X-ray phenomenology. Scenario (2) can explain the data if we assume the presence of electrons/positrons with a Lorentz factor ∼ 108 (∼0.1 PeV) that pass through the IBS and tap a substantial portion of the pulsar voltage drop. These findings raise the possibility that the orbitally modulating gamma-ray signals from pulsar binaries can provide insights into the flow structure and energy conversion within pulsar winds and particle acceleration nearing PeV energies in pulsars. These signals may also yield greater understanding of kilogauss magnetic fields potentially hosted by the low-mass stars in these systems.
Solar Type J Radio Bursts and the Associated Coronal Loop
Authors: Feng S. W. , Xie H. X. , Misawa H.
Published: March 2024

The solar type J radio burst is a variant of type III bursts, which are a probe for understanding solar energetic electrons and local electron density. This study investigates a type J burst event on 2017 September 9. We have combined the data from the extreme-ultraviolet (EUV) imaging and the EUV Imaging Spectrometer (EIS) to analyze the event. Within 4 minutes several type J bursts with similar morphology occur. Two of them, with clear fundamental and second harmonic bands, are studied in detail. We find a delay of 2 ± 0.5 s between their different harmonic bands. During type J bursts, only one coronal loop brightens significantly at its northern footpoint, in correlation with the continuous injection of erupting jets into the loop. The EUV intensity of the brightening footpoint is correlated with the radio flux at 245 and 410 MHz, with correlation coefficients of 0.2 and 0.4, respectively. These observations suggest that the type J bursts should originate from this coronal loop. By analyzing the electron number density distribution along the coronal loop diagnosed from the EIS data and the time evolution of the plasma frequency calculated from the type J burst, we determine that the velocities of the energetic electrons exciting the two type Js are 0.10 ± 0.02c and 0.12 ± 0.02c. Our results confirm previous studies on type J bursts.
Evolution of the Ratio of Mg ii Intensities during Solar Flares
Authors: Roy Soumya , Tripathi Durgesh
Published: March 2024

The Mg ii k and h line intensity ratios can be used to probe the characteristics of the plasma in the solar atmosphere. In this study, using the observations recorded by the Interface Region Imaging Spectrometer, we study the variation of the Mg ii k and h intensity ratio for three flares belonging to X-class, M-class, and C-class, throughout their evolution. We also study the k-to-h intensity ratio as a function of magnetic flux density obtained from the line-of-sight magnetograms recorded by the Helioseismic and Magnetic Imager on board the Solar Dynamics Observatory. Our results reveal that, while the intensity ratios are independent of magnetic flux density, they show significant changes during the evolution of the C-class and M-class flares. The intensity ratios start to increase at the start of the flare and peak during the impulsive phase before the flare peak and decrease rapidly thereafter. The values of the ratios fall even below the preflare level during the peak and decline phases of the flare. These results are important in light of heating and cooling of localized plasma and provide further constraint on the understanding of flare physics.
S-PLUS: Photometric Recalibration with the Stellar Color Regression Method and an Improved Gaia XP Synthetic Photometry Method
Authors: Xiao Kai , Huang Yang , Yuan Haibo , Beers Timothy C. , Huang Bowen , Xu Shuai , Yang Lin , Almeida-Fernandes Felipe , Perottoni Hélio D. , Limberg Guilherme , Schoenell William , Ribeiro Tiago , Kanaan Antonio , de Oliveira Natanael Gomes
Published: March 2024

We present a comprehensive recalibration of narrowband/medium-band and broadband photometry from the Southern Photometric Local Universe Survey (S-PLUS) by leveraging two approaches: an improved Gaia XP synthetic photometry (XPSP) method with corrected Gaia XP spectra, and the stellar color regression (SCR) method with corrected Gaia Early Data Release 3 photometric data and spectroscopic data from LAMOST Data Release 7. Through the use of millions of stars as standards per band, we demonstrate the existence of position-dependent systematic errors, up to 23 mmag for the main survey region, in the S-PLUS iDR4 photometric data. A comparison between the XPSP and SCR methods reveals minor differences in zero-point offsets, typically within the range of 1–6 mmag, indicating the accuracy of the recalibration, and a twofold to threefold improvement in the zero-point precision. During this process, we also verify and correct for systematic errors related to CCD position. The corrected S-PLUS iDR4 photometric data will provide a solid data foundation for conducting scientific research that relies on high-precision calibration. Our results underscore the power of the XPSP method in combination with the SCR method, showcasing their effectiveness in enhancing calibration precision for wide-field surveys when combined with Gaia photometry and XP spectra, to be applied for other S-PLUS subsurveys.
HST Far-ultraviolet Transit Observations of Two Neptune Progenitors Younger than 30 Myr
Authors: Feinstein Adina D. , France Kevin , Cauley P. Wilson , Livingston John H.
Published: March 2024

Photoevaporation is believed to dominate the removal of planetary atmospheres when they are young (<100 Myr). Signatures of atmospheric mass-loss can be observed in the ultraviolet (UV) through the near-infrared. We present Far-UV transit observations of AU Mic b (∼22 Myr) and V1298 Tau c (∼28 Myr) with the Hubble Space Telescope. We search for evidence of escaping metals in the C ii, Si ii, and Si iii emission lines and compare their behavior to tracers of stellar activity. We detect no evidence of atmospheric mass loss, and place upper limits on the radii of AU Mic b and V1298 Tau c.
Le foncier, une ressource à sécuriser et à préserver pour les géomètres-experts
Authors: Pascual Joseph
Published: March 2024

Le géomètre-expert, garant d’un cadre de vie durable, qui assure des missions de conseil et d’accompagnement des collectivités en matière d’aménagement sur tous les territoires, tant urbains que ruraux, est chargé par la loi de définir les limites de la propriété, et de sécuriser les droits attachés. Il veille à optimiser la consommation du foncier en restructurant le parcellaire forestier et en renaturant les espaces, en cohérence avec la trajectoire de sobriété foncière et de lutte contre l’artificialisation des sols définie par la loi Climat et Résilience. Il concourt également à la délimitation de la propriété des personnes publiques selon une procédure contradictoire. Il intervient sur l’hexagone comme dans les territoires ultra-marins, où la frange littorale est soumise à de fortes pressions foncières.
Les fondements et les conditions de la mise en œuvre du zéro artificialisation nette
Authors: Depresle Bruno
Published: March 2024

L’objectif ZAN fixé par la loi Climat et Résilience du 22 août 2021 est une composante essentielle de la transition écologique, au même titre que le Zéro émission nette de gaz à effet de serre (ZEN). Il est justifié par la multiplicité des services économiques et écosystémiques rendus par les sols (alimentation, biodiversité, cycle hydrologique, régulation climatique, etc.), que leur artificialisation altère durablement. La mise en œuvre du ZAN est d’abord conditionnée par l’évolution du modèle d’aménagement, l’exigence étant de rompre avec le modèle de la périurbanisation foncière, prédominant depuis les années 1970, tout en répondant aux besoins de la population et du développement. Elle suppose également, dans une approche réellement systémique imposée par son couplage temporel avec le ZEN, d’importantes mutations dans les sphères de production et de consommation, avec des conséquences majeures sur l’équilibre macroéconomique emploisressources, sur les conditions de financement et donc sur le modèle économique d’ensemble.
L’administration inégalitaire de l’attente
Authors: Chauvin Pierre-Antoine
Published: March 2024

Cet article s’intéresse au rôle des administrations dans la mise en œuvre du droit au logement et dans la distribution inégale des chances et des délais d’attente pour l’accès au logement social. À l’image de ce que l’on observe depuis plusieurs années à l’entrée de l’enseignement supérieur, le placement des candidat·es au logement social s’opère aujourd’hui dans un champ toujours plus segmenté : diversification des filières, foisonnement de labels et de critères de priorisation, développement d’« itinéraires bis » pensés comme temporaires, multiplication des dispositifs d’accompagnement, etc. À l’appui d’un suivi statistique de 696 familles sans domicile hébergées à l’hôtel à Paris, cette enquête montre que l’inflation des labellisations « prioritaires » a engendré une spécialisation et une hiérarchisation entre les files d’attente dites « prioritaires » à l’entrée du parc social. Elle révèle de surcroît que toute sortie de la file d’attente se paye au prix d’une relégation durable dans la compétition. L’auto-élimination des candidat·es enregistre en premier lieu le poids exorbitant du capital économique dans le tri des prétendant·es. Elle affecte singulièrement les familles sans domicile les plus éloignées de l’emploi, mais aussi celles qui détiennent un petit capital social leur permettant de trouver d’autres portes de sortie chez des tiers ou dans le parc privé. L’article met, par ailleurs, en évidence le poids des stratégies de placement élaborées par les agent·es du guichet qui appartiennent, dans leur grand majorité, aux classes moyennes salariées du public. Les délais d’attente sont prescrits aux candidat·es en fonction d’attendus moraux mais aussi de stéréotypes sociaux. Pris dans leur ensemble, ces mécanismes de tri contribuent à la stratification interne aux classes populaires et à la redistribution inégalitaire dans l’espace résidentiel d’individus partageant pourtant, initialement, un certain degré de proximité sociale.
Balzac : études de langue et de style (1850-2019)
Authors: Bordas Éric
Published: March 2024

R ésumé – La condamnation du prétendu « mauvais style » de Balzac a été l’un des dogmes de la critique littéraire, indiscuté jusque vers 1950 environ. Puis les approches poéticiennes du récit, parallèlement au développement d’une génétique scientifique des textes, ont modifié la lecture de La Comédie humaine . Si la discipline universitaire dite « stylistique » a dû attendre son renouvellement en profondeur dans les années 1980 par les acquis de la linguistique de l’énonciation pour proposer une approche non normative de la langue romanesque, les résultats n’ont cessé, depuis, de s’affiner, dans des travaux réguliers toujours plus exigeants.
Les « fils de Balzac » en campagne (1846-1862)
Authors: Diaz José-Luis
Published: March 2024

C’est à considérer le véritable tournant critique qu’a été, à partir du milieu des années 1840, l’entrée en scène d’une jeune génération d’admirateurs déclarés de Balzac, rompant du tout au tout avec l’animosité commune dans la critique du temps (Sainte-Beuve, Janin, Chaudesaigues, etc.), qu’est consacrée la présente étude. La formule de notre titre est celle de l’un d’entre eux, parmi les plus assidus dans son action, Champfleury, qui, reprenant en 1887 une expression déjà employée par Zola dans Le Roman expérimental (1881), a baptisé ces jeunes écrivains critiques au nombre desquels lui-même a compté comme des « fils de Balzac ». Malgré la complicité admirative qui les unit, ces jeunes écrivains de moins de trente ans ne forment point un groupe homogène, puisque s’opposent ceux qui font de Balzac le fondateur de l’école réaliste (Champfleury) et ceux qui ont plutôt tendance à voir en lui un « voyant » (Hippolyte Babou, Baudelaire, Barbey, Louis de Cormenin). Mais il se ressemblent par la sympathie filiale qu’ils manifestent, par la manière qu’ils ont de considérer Balzac comme une grande figure mythologique, d’être en quête de « renseignements » biographiques à son sujet, d’admirer en bloc La Comédie humaine tout en étant désireux de voir éditées ses « œuvres diverses ».
Temps et topologie des mondes
Authors: Brisac Antoine
Published: March 2024

Bien qu’il ait été défini comme un ordre des successions, le temps leibnizien s’y réduit-il ? Le recours à Deleuze permet d’en douter. D’une part, les mondes de verre de la fin de la Théodicée sont interprétés comme des cristaux, qui révèlent le temps dans son ensemble. Nous verrons pour Leibniz même, indépendamment de Deleuze, ce qui autorise une telle forme du temps. D’autre part, dès Logique du sens , Deleuze compte sur la topologie d’une courbe pour synthétiser les événements d’un monde. La convergence de leurs points entraîne enfin que les mondes divergent en une bifurcation, dont nous demanderons si la Confessio philosophi ne l’autorisait pas déjà, dans sa conception de l’acte libre.