bluuebunny/crossref_metadata_2025 huggingface dataset:
The results of experimental studies to assess the efficiency of hot water treatment of asphalt-resin-paraffin deposits
Authors:   Belarusian Research and Design Institute of Oil, Gorbachenko V. S.
Published: February 2025

One of the key problems of oil production at the Pripyat Trough fields is the formation of asphalt-resin-paraffin deposits (ARPD) on underground equipment. These deposits significantly complicate the operation of wells and can lead to a decrease in their productivity. There is a large number of methods for combating ARPD, which differ in the principles of action on deposits. The most common method to tackle ARPD in the Belarusian region is the technological treatment with hot water. This method helps to remove ARPD, restoring the normal operation of the equipment. The study presents the methodology for conducting experimental studies aimed at assessment of the effectiveness of thermal action on ARPD under various hot water injection modes during the technological treatment. As part of the research, tests were conducted using various coolant injection parameters to determine the optimal conditions for maximum efficiency. The paper also presents a method to enhance the efficiency of thermal treatment with hot water. The main principle is to increase the flow rate of hot liquid injected into the well. This allows reducing heat losses into the rock in the wellhead interval, which in turn improves the heating of the liquid in the column of pump-compression pipes at depths of more than 100 meters. The results of field studies have shown that an increase in the flow rate of injected hot water significantly intensifies the efficiency of heat treatment compared to the standard approach. This confirms the feasibility of using the proposed method for removing ASPD from the working surface of deep-well pumping equipment.
Аnalysis of the causes and methods used to mitigate scale deposits at the production wells in Western Siberia
Authors:   LUKOIL-Engineering, Ivanov D. A. ,   Higher School of Petroleum, Advanced petroleum engineering school, Valiev R. F. ,   LUKOIL-Engineering, Nadeen D. S. ,   LUKOIL-Engineering, Shagislamov R. N. ,   LUKOIL-Engineering, Kozhevnikov R. G. ,   LUKOIL
Published: February 2025

A comprehensive analysis of all failures and replacements of subsurface lifting equipment in one region of Western Siberia on a well stock with problems due to scale deposits has been carried out. In total, about 2,500 equipment replacements (electrical submersible pump) were carried out due to failures during the period 2019–2023. All wells with complications were either equipped with a pre-connected device to prevent scale precipitation, or routine maintenance was carried out on the wells using chemical agents. Based on the results of data collection and systematization, the main objects with the highest number of failures and complications were identified. A total of 24 formations were selected, where about 1,400 equipment replacements were carried out during this period. For these objects, a search was carried out to identify systemic causes of the formation of scale deposits with additional analytical studies. Complications at Cretaceous and Jurassic formation have different origins. Newly gained experience on Jurassic formation production can be used to draw up new regulations and methodological recommendations, since the current set of measures and the work program have certain limitations. As part of the analysis, a pilot scheme for data collection, generalization and analysis has been prepared, which can then be expanded to a full neural network. In particular, several databases were combined and new databases were prepared based on initial laboratory studies that had not previously been considered when analyzing the causes of equipment failure. The approaches and results independent producers are analyzed, which allows us to identify best practices and compare different approaches and methods of dealing with complications.
Actions at a glance: The time course of action, object, and scene recognition in a free recall paradigm
Authors: Reger Maximilian , Vrabie Oleg , Volberg Gregor , Lingnau Angelika
Published: February 2025

Being able to quickly recognize other people’s actions lies at the heart of our ability to efficiently interact with our environment. Action recognition has been suggested to rely on the analysis and integration of information from different perceptual subsystems, e.g., for the processing of objects and scenes. However, stimulus presentation times that are required to extract information about actions, objects, and scenes to our knowledge have not yet been directly compared. To address this gap in the literature, we compared the recognition thresholds for actions, objects, and scenes. First, 30 participants were presented with grayscale images depicting different actions at variable presentation times (33–500 ms) and provided written descriptions of each image. Next, ten naïve raters evaluated these descriptions with respect to the presence and accuracy of information related to actions, objects, scenes, and sensory information. Comparing thresholds across presentation times, we found that recognizing actions required shorter presentation times (from 60 ms onwards) than objects (68 ms) and scenes (84 ms). More specific actions required presentation times of approximately 100 ms. Moreover, thresholds were modulated by action category, with the lowest thresholds for locomotion and the highest thresholds for food-related actions. Together, our data suggest that perceptual evidence for actions, objects, and scenes is gathered in parallel when these are presented in the same scene but accumulates faster for actions that reflect static body posture recognition than for objects and scenes.
New tandem Ugi/intramolecular Diels–Alder reaction based on vinylfuran and 1,3-butadienylfuran derivatives
Authors: Horak Yuriy I , Lytvyn Roman Z , Vakhula Andrii R , Homza Yuriy V , Pokhodylo Nazariy T , Obushak Mykola D
Published: February 2025

A new tandem sequence involving the Ugi reaction and Diels–Alder [4 + 2] cycloaddition based on vinylfuran and 1,3-butadienylfuran derivatives was designed and studied. It was found that in the case of 3-(furan-2-yl)acrylaldehyde, a one-pot Ugi reaction and intramolecular Diels–Alder vinylarene (IMDAV) reaction leads to the formation of the insufficiently studied furo[2,3-f]isoindole derivatives. Ugi adducts formed from (E)-3-(furan-2-yl)acrylaldehyde, maleic acid monoanilide, isonitrile, and an amine spontaneously underwent the IMDAV reaction with a high level of stereoselectivity, leading to single pairs of enantiomers of 4,4a,5,6,7,7a-hexahydro-3aH-furo[2,3-f]isoindole core in excellent yields. Under the same conditions, the (2E,4E)-5-(furan-2-yl)penta-2,4-dienal gives an Ugi adduct that undergoes the IMDA reaction without involving the furan core. The cycloaddition leads to the formation of 2,3,3a,4,5,7a-hexahydro-1H-isoindoles in high yields. The studied tandem Ugi and intramolecular Diels–Alder reactions allow high substituent variation in the named isoindoles.
SOSIALISASI DIGITAL PARENTING MENGGUNAKAN GOOGLE FAMILY LINK di GMIT MARANATHA OEBUFU
Authors: Enstein Jhon , Benunifit Yonly Adrianus , Tanggur Femberianus Sunario , Takuneno Khatrin Juliani , Mellu Yokran , Hu'an Desy
Published: February 2025

AbstrakTujuan dari pengabdian ini adalah memberikan pengetahuan dan keterampilan kepada masyarakat Kota Kupang pada umumnya dan warga jemaat GMIT Maranatha Oebufu tentang pentingnya parenting di era digital. Pengabdian ini juga memiliki tujuan lain yaitu agar orang tua mengetahui gaya pengasuhan anak dan mampu memanfaatkan teknologi digital dalam pengawasan anak usia remaja menggunakan google family link.
AbstractThe purpose of this service is to provide knowledge and skills to the people of Kupang City in general and members of the GMIT Maranatha Oebufu congregation about the importance of parenting in the digital era. This service also has another goal, namely that parents know parenting styles and are able to utilize digital technology in supervising teenage children using the Google Family Link
Economia Circular: Princípios e Práticas para a Sustentabilidade
Authors: Santos Danielle Mariam Araujo
Published: February 2025

Esta obra é fruto de um esforço colaborativo que reuniu professores, estudantes e pesquisadores cujo envolvimento enriqueceu significativamente as discussões neste espaço formativo. Além disso, resulta de iniciativas interinstitucionais e ações voltadas ao incentivo à pesquisa, congregando especialistas de diversas áreas do conhecimento, vinculados a Instituições de Educação Superior, públicas e privadas, em âmbito nacional e internacional.
Seu principal objetivo é fortalecer a integração entre instituições, tanto no Brasil quanto no exterior, por meio de redes de pesquisa comprometidas com a formação continuada de profissionais da educação. Para isso, busca-se a produção e a ampla disseminação do conhecimento em distintas áreas do saber.
Expressamos nossa profunda gratidão aos autores pelo empenho, comprometimento e dedicação na concepção e finalização desta obra. Esperamos que ela se consolide como um recurso didático-pedagógico valioso, atendendo às necessidades de estudantes, docentes de todos os níveis de ensino e demais interessados na temática.
Hybrid Nanofluids in a Permeable Shrinking Surface with Power Law Heat Flux: Heat Source and Joule Heating Effect
Authors: Zainal Nurul Amira , Waini Iskandar , Hamzah Khairum , Mukhtar Mohd Fariduddin , Sayed Nordin Sayed Kushairi , Pop Ioan
Published: February 2025

A heat source is frequently employed in the synthesis of new materials, the cooling of electronic devices, and the production of paper. Meanwhile, Joule heating is the process by which electrical energy is converted into thermal energy as a result of resistive losses, causing the generation of heat. This phenomenon is frequently employed in the development of electrical and electronic devices. This study attempts to emphasise these two parameters' impact on the Al2O3-Cu/H2O hybrid nanofluid as it passes through a shrinking sheet with a power law heat flux. This problem utilized the bvp4c to solve boundary value problems related to systems of ordinary differential equations. The study reveals that the flow progress is unaffected by both the Joule heating and the heat source parameters. Moreover, the results have conclusively proven that the presence of these two physical parameters slightly underperforms the efficiency of heat transfer in the hybrid nanofluid. At the same time, the boundary layer separation is not significantly impacted. As a result of the increased heat production in the flow system, it is remarked that the addition of nanoparticle volume fraction results in poorer heat transfer performance than claimed.
An Experimental Study to Improve the Performance of Three-Straight Bladed Darrieus Vertical Axis Wind Turbine
Authors: Ahmed Khammas Farhan , Nabil Rand
Published: February 2025

In general, Vertical Axis Wind Turbines VAWTs have very important advantages, the most important of which is that they receive wind from any direction without orientation. The purpose of this work is to install Savonius hollow turbines with Darius type wind turbines with vertical axis and straight blades to reduce the weakening of the initial operating capacity of Darius turbines with Straight blades to reduce the weakening of the initial operating capacity of Darius turbines. The novelty and importance of this study is the possibility of using the Darius wind turbine in environments or places with low wind speeds in a more effective way to generate energy. In addition, one of the advantages of VAWTs is that they are simple to manufacture and low in cost. One of the solutions to address the problem of the Darrieus WT, which cannot rotate and does not respond to rotation in the field of low wind speeds, is the use of a combined rotor. In this research paper, the Savonius WT used to increase and improve the efficiency of the 3- Straight Bladed (3-SB) Darrieus WT by combining them together in a way that ensures their rotation on one axis of rotation. A combined Darrieus-Savonius (DS) is a sort of VAWT with numerous points of interest over individual Savonius or individual Darrieus WT, such as superior proficiency and beginning torque than the Darrieus rotor alone. Because of what was mentioned above and in order to solve the Darrieus problem in low wind speed, two models of the WT were designed and manufactured, one of which was a simple Darrieus with 3-SB Darrieus (NACA0012) and the other a combined three blades turbine of the DS, the Darrieus placed above the Savonius rotor. These two models of the WT were tested in a subsonic wind tunnel, the various parameters namely; total power, TSR and power coefficient were calculated. From the present investigation, it is seen that with combined DS wind rotor, the total power and power coefficient start increasing. The maximum power coefficient of 40% was obtained at a combined WT at a wind velocity of 5 m/s. However, while comparing the power coefficients () for a simple Darrieus-rotor with that of the combined configuration of the DS rotor, it observed that there is a definite improvement in the power coefficient for the combined DS rotor at the same wind velocity. The combined DS rotor provided power of 8.2 watt, which is higher than the power for a simple Darrieus rotor, which is 2.43watt, under the same test conditions.
Three Approaches to Strategy human resource management based on management
Authors: Sugiyono Sugiyono
Published: February 2025

This paper as an importanHuman Resource Management (HRM) in enhancement processes of knowledge managemen. Every company should be able to see the existing challenges and potential in its human resources. Good human resource governance will improve the quality of cooperation among employees of the company. Moreover, effective human resource governance encourages creativity in every problem-solving process. Creativity and work efficiency of human resources can improve the overall organizational performance. The fundamental aim of strategic human resources management is to generate strategic capability by ensuring that the organization has the skilled, committed and well-motivated employees it needs to achieve sustained competitive advantage.
Determination of Financial Management in Indonesia
Authors: Ni Nyoman sawitri
Published: February 2025

The article on determining financial management in Indonesia is a scientific literature review article within the scope of financial management science. This article aims to create a hypothesis regarding the relationship between factors, which can then be used for further research in the field of financial management. Descriptive qualitative research methodology was used in this research. The data used in this research comes from previous research which is still relevant to this research. Data was obtained from reputable academic online platforms, including Publish or Perish, Google Scholar, digital reference books, and the journal Sprott. The results of this research are as follows: 1) The capital market plays a role in Financial Management in Indonesia; 2) Monetary policy plays a role in Financial Management in Indonesia; 3) Fiscal policy plays a role in Financial Management in Indonesia; and 4) Economic growth plays a role in Financial Management in Indonesia.
The Effect of Current Rasio (Cr) and Profit Margin (Npm) on the Share Price of Milk Industry and Trading Company Tbk
Authors: Adelin Dessy
Published: February 2025

This research is the effect of current ratio and net profit margin on the share price of Milk Industry and trading company Tbk. The method used for this research is a descriptive method with a quantitative approach. The type of data used in this research is quantitative data.  The data source used is secondary data, namely data taken from publications made by the Indonesia Stock Exchange. Namely in the form of the Financial Statements of Milk Industry & Trading Company Tbk. in 2013, 2014, 2015, 2016 and 2017. The highest Current Ratio in 2016 was shown at 484.36% and the highest Net Profit Margin in 2008 was shown at 22.29%. Current Ratio and Net Profit Margin do not have a significant effect on stock prices. For investors, Current Ratio and Net Profit Margin do not have a significant influence in making decisions on whether investors will buy, hold or sell shares. In this case, investors want to get dividends from the company's profits and get capital gains from the positive difference between the purchase price and the selling price of the shares. Current Ratio and Net Profit Margin together or simultaneously do not have a significant effect on stock prices.
Financial of Management: Concept, Success Indicators, and Evaluation (Literature Review)
Authors: Teguh Maianto  , Sova Maya , Zulaekah Zulaekah , Mulyani Setyowati Tri , Arif Hernawan Moch
Published: February 2025

Articles related to financial management: concepts, success indicators and evaluation are scientific articles of literature review in the scope of financial management science. This article aims to make a hypothesis about the relationship between factors, which can then be used for further research in the field of financial management. The approach used in this study is descriptive qualitative. The data used in this study comes from previous studies that are still relevant to this study. The data used in this study were obtained from academic media, reputable journals, and academic platforms such as Scopus, Emeral, WoS, DOAJ, EBSCO, SINTA, GARUDA journals and digital books. The results of this study are as follows: 1) Concepts play a role in financial management; 2) Success indicators play a role in financial management; and 3) Evaluation plays a role in financial management.
Strategy to Increasing Country's Economic Growth With a Bonded Zone Logistic Center and Free Trade
Authors: Sri Yanthy Yosepha  , Agus Suhendra  , Christophorus Indra Wahyu Putra  , Kamsariaty Kamsariaty  , Denny Mahendra
Published: February 2025

Articles can make a significant contribution to the economic literature and public policy, as well as provide practical guidance for policymakers and stakeholders in their efforts to improve economic growth through logistics and free trade strategies. The research method applied in this scientific article is a structured literature review. Relevant scientific articles are selected, identified, and evaluated during the literature review process. The determination of the scope of the study was carried out using the PICO (population/problem, intervention, comparison) framework, which provides a score to set the study limits. A collection of relevant scientific articles is selected, identified, and reviewed during a literature review. The results of this article state that existing logistics infrastructure plays an important role in improving logistics performance, which ultimately has an impact on increasing sea trade and higher economic growth. Cooperation with customs and excise authorities in the supply chain also increases trade opportunities and supports environmental sustainability by reducing carbon emissions through reduced waiting times and queues. The use of green energy sources and green practices in logistics operations not only reduces negative environmental and social impacts, but also improves financial performance through increased GDP per capita, trade openness, and greater global export opportunities.
Determination of Economic Climate Change and Development of the Internet of Things: Analysis of Business Sustainability and Competitive Advantage
Authors: Dharmanto Agus , Widyastuti Tri , Nyoman Sawitri Ni , Sasanti Ningki
Published: February 2025

Purpose – The goal of this work is to construct a hypothesis on the influence of factors that may subsequently be used for further research within the area of marketing management. Design/methodology/approach – The research method chosen was descriptive qualitative. Data was acquired from past research that is relevant to this study and sourced from academic internet media such as Publish or Perish, Google Scholar, digital reference books, and the journal Sinta. Findings – The findings of this study show that: 1) Climate change affects business sustainability; 2) The development of the internet of things has an impact on business continuity; 3) Climate change affects competitive advantage; 4) The development of the internet of things influences competitive advantage; and 5) Business sustainability influences competitive advantage. Research limitations/implications – The constraints of the data used in this study mean that the results produced are less than perfect. Practical implications – This research is valuable for business executives who want to understand the influence of climate change and the expansion of the Internet of Things on their company's sustainability and competitive advantage.
The Influence of Job Placement and Competence on Employee Work Motivation
Authors: Nugraha Andi
Published: February 2025

The purpose of this research is to determine and analyze: 1)Placement 2)Competence; 3)Employee Work Motivation; and 4)The Influence of Placement and Competence on Employee Work Motivation at UPTD Road and Bridge Management Service Area II of the West Java Province Public Works and Spatial Planning Office, both simultaneously and partially. The research method used in this study is descriptive survey and explanatory survey, with the unit of analysis being the employees of UPTD Pengelolaan Jalan dan Jembatan Wilayah Pelayanan II Dinas Bina Marga dan Penataan Ruang Provinsi Jawa Barat Azzakiyyah Bandung, with a sample size of 31 people. The type of investigation is causal, and the time horizon in this study is cross-sectional. Based on the research results, it was found that the placement of Madrasah Ibtidaiyah employees is still not appropriate, the competencies of UPTD Pengelolaan Jalan dan Jembatan Wilayah Pelayanan II Dinas Bina Marga dan Penataan Ruang Provinsi Jawa Barat employees can generally be said to still be inadequate, and the work motivation of UPTD Pengelolaan Jalan dan Jembatan Wilayah Pelayanan II Dinas Bina Marga dan Penataan Ruang Provinsi Jawa Barat employees is currently rated as good. Employee placement and competencies simultaneously and partially affect the work motivation of UPTD Pengelolaan Jalan dan Jembatan Wilayah Pelayanan II Dinas Bina Marga dan Penataan Ruang Provinsi Jawa Barat employees. However, partially, Placement predominantly affects the work motivation of employees more than competence. Since placement more dominantly influences the work motivation of employees, it becomes the first priority in improving their work motivation. Therefore, the PTD Pengelolaan Jalan dan Jembatan Wilayah Pelayanan II Dinas Bina Marga dan Penataan Ruang Provinsi Jawa Barat is advised to consistently manage employee placements according to their abilities, so that they can work more professionally.
DVI-team szervezésének lehetőségei a katasztrófavédelem keretei között
Authors: Mágori Krisztina , Muhoray Árpád
Published: February 2025

Providing an overview of the Hungarian legal framework for disaster recovery and medicolegal post-mortem examination, the authors assess the options for establishing disaster victim identification units in Hungary.
Problems of ensuring innovation-oriented economic growth in vegetable growing (using the example of garlic)
Authors:   Vyatka State Аgrotechnological University, Zhukova Y.S. , Marinina A.Y. ,   Vyatka State Аgrotechnological University
Published: February 2025

One of the conditions for the progressive economic development of Russia is to ensure innovation-oriented economic growth. Problems of its provision exist in all sectors and spheres of activity, including in one of the branches of agriculture, namely vegetable growing. This article examines the problems of ensuring innovation-oriented economic growth using the example of garlic cultivation, considers an example of one of the technological innovations, and conducts a marketing study proving the possibility of introducing innovative garlic processing products.
Impact of spillover effects of labor migration from EAEU countries on the competitiveness of Russian regions
Authors:   Yaroslavl State Technical University, Shkiotov S.V. , Markin M.I. ,   Yaroslavl State Technical University, Nevolina S.E. ,   Yaroslavl State Technical University
Published: February 2025

The formation of a single labor market in the EAEU creates new opportunities and risks for national economies. The Russian Federation, being the center of attraction for labor migrants, may face positive and negative external labor migration. The relevance of the study is determined by the need to assess the impact of external labor migration on the socio-economic development of the Russian economy. The purpose of the study is to assess the impact of spillover effects of labor migration from EAEU countries on the competitiveness of Russian regions. The regression analysis is used to verify the hypothesis about the positive impact of labor inflows from EAEU member states on the level of competitiveness of Russian regions. The study confirms that there is a statically significant relationship between the variables under study - external labor migration does affect the competitiveness of Russian regions. The results of the study can be used to develop a strategy for the development of Russian regions taking into account the parameters of external labor migration from the EAEU member states.
The reference model of innovative potential in the system of ensuring economic security of the region
Authors:   Pskov State University, Balog M.M. , Babkin A.V. ,   St. Petersburg Polytechnic University of Peter the Great
Published: February 2025

The intensification of threats to economic security, taking place against the backdrop of confrontation with unfriendly countries, justifies the purpose of this study, which is to create a reference model of innovative potential and determine its role in the system of ensuring the economic security of the region. The work formulated the author's definition of the innovation potential of the territory, and developed a reference model of the region's innovation potential, characterized by the system-forming function of the digital subpotential, and also designed a model of the region's economic security system with a definition of the role of innovation potential in it.
Transport connection of the country as a key to Russia’s modernization
Authors:   Institute of Scientific Information for Social Sciences of the Russian Academy of Sciences, Kuznetsov A.V.
Published: February 2025

The article notes that for the successful modernization of modern Russia, a program is needed to solve a large-scale problem with a multiplier effect, similar to the electrification of the GOELRO plan, namely, a sharp increase in the country's transport connectivity. The program should include the creation of high-speed communications between major cities of the country outside the gravitational zone of Moscow, the parallel development of communications facilities, including the Internet along railways and highways, and the rise of relevant branches of domestic engineering. This will also create new competitive advantages for Russia in foreign economic relations.
MOMOS: The Multi-Object MKID Optical Spectrometer Simulator and Data Reduction Package
Authors: Kim Crystal S. , Bailey John I. , López Ronald A. , Clay W. Hawkins , Mazin Benjamin A.
Published: February 2025

The Multi-Object MKID Optical Spectrometer (MOMOS) is a proposed visible wavelength spectrograph that uses microwave kinetic inductance detectors (MKIDs) targeting an initial resolving power of 3500 for up to five fiber inputs. With their modest wavelength-resolving abilities, MKIDs take the place of both the cross disperser and detector in the spectrograph. MKIDs lack read noise and dark current enabling noiseless post-observation rebinning and characterization of faint objects, as well as time-resolved photon-counting spectroscopy. This work presents a MOMOS simulator customizable for different MOMOS configurations. Treating simulator products as inputs, an algorithm was developed and implemented in the MOMOS data reduction package to calibrate and extract spectra.
Bioverse: Giant Magellan Telescope and Extremely Large Telescope Direct Imaging and High-resolution Spectroscopy Assessment—Surveying Exo-Earth O2 and Testing the Habitable Zone Oxygen Hypothesis
Authors: Hardegree-Ullman Kevin K. , Apai Dániel , Haffert Sebastiaan Y. , Schlecker Martin , Kasper Markus , Kammerer Jens , Wagner Kevin
Published: February 2025

Biosignature detection in the atmospheres of Earth-like exoplanets is one of the most significant and ambitious goals for astronomy, astrobiology, and humanity. Molecular oxygen is among the strongest indicators of life on Earth, but it will be extremely difficult to detect via transmission spectroscopy. We used the Bioverse statistical framework to assess the ability to probe Earth-like O2 levels on hypothetical nearby habitable zone exo-Earth candidates (EECs) using direct imaging and high-resolution spectroscopy on the Giant Magellan Telescope (GMT) and the Extremely Large Telescope (ELT). Assuming continued improvement in instruments and data processing, our analysis highlights the best-case scenarios. Earth-like O2 levels could be probed on up to ∼7 and ∼19 EECs orbiting bright M dwarfs within 20 pc in a hypothetical 10 yr survey on the GMT and ELT, respectively. Four known super-Earth candidates, including Proxima Centauri b, could be probed for O2 within about 1 week of observations on the ELT and a few months on the GMT. We also assessed the ability of the ELT to test the habitable zone oxygen hypothesis—that habitable zone Earth-sized planets are more likely to have O2—within a 10 yr survey using Bioverse. Testing this hypothesis requires either ∼one-half of the EECs to have O2 or ∼one-third if η
⊕ is large. A Northern Hemisphere large-aperture telescope, such as the Thirty Meter Telescope, would expand the target star pool by about 25%, reduce the time to probe biosignatures on individual targets, and provide an additional independent check on potential biosignature detections.
A Comprehensive Catalog of Emission-line Nebulae, Star Clusters, and Supergiants in M31 from the LAMOST Spectroscopic Survey
Authors: Chen Pinjian , Chen Bingqiu , Fang Xuan , Yuan Haibo , Zhang Baisong , Zhang Xiangwei , Sun Jiarui , Liu Xiaowei
Published: February 2025

Spectroscopic observations of various tracers in nearby galaxies, such as Andromeda (M31), play a crucial role in identifying and classifying individual stellar populations and nebular objects, thereby enhancing our understanding of galactic composition, environment, and dynamics, as well as stellar evolution. While the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) survey of M31 has produced extensive data sets, a comprehensive catalog of emission-line nebulae, star clusters, and supergiants is yet to be completed. In this paper, we present a final catalog of 384 emission-line nebulae, 380 star clusters, and 375 supergiants and candidates in M31, as carefully selected and identified from the LAMOST spectroscopic database. These objects were classified using a random forest algorithm, followed by thorough visual examinations of their spectral characteristics, as well as morphologies revealed by archive images. For emission-line nebulae, we measured radial velocities and relative fluxes of emission lines, enabling further classification of planetary nebulae and H ii regions. Additionally, we identified 245 emission-line nebulae in M33. This work lays the data foundation for the study of M31 and offers valuable tracers to investigate M31’s structure and evolution.
The Radiowave Hunt for Young Stellar Object Emission and Demographics (RADIOHEAD): A Radio Luminosity–Spectral Type Dependence in Taurus–Auriga YSOs
Authors: Rahman Ramisa Akther , Lovell Joshua Bennett , Koch Eric W. , Wilner David J. , Andrews Sean M. , Monsch Kristina , Ha Dan
Published: February 2025

We measure the radio continuum fluxes at the locations of all Gaia-confirmed members of Taurus–Auriga using Karl G. Jansky Very Large Array Sky Survey data (VLASS; 2–4 GHz, σ
VLASS ~ 110–140 μJy, 2

.

″

5 resolution) spanning three VLASS epochs (2019, 2021, and 2023). We present 35 detections coincident with young Taurus–Auriga stars (29 in individual VLASS images, 6 via stacking). We find a strong dependence on spectral type, wherein the fractional detection rate of radio emission coincident with early-type young stellar objects (YSOs) is systematically higher than late-type YSOs, ranging from 25% ± 13% for B–F YSOs, 21% ± 11% for G YSOs, 18.4% ± 6.3% for K0–K4 YSOs, 15.5% ± 5.4% for K5–K9 YSOs, 7.0% ± 2.7% for M0–M2 YSOs, 2.3% ± 0.9% for M3–M6 YSOs, and 1.9% ± 1.9% for YSOs with SpTs later than M7. We present cumulative density distributions of radio luminosity densities that demonstrate a significant luminosity enhancement for early- versus late-type YSOs. We find 25% of the detected sources to be significantly variable. We discuss possible interpretations of this dependence, which may reflect stellar magnetic activity, binary interactions, or stellar flaring. We find that the mid-infrared YSO class is a strong indicator of radio detectability consistent with higher frequency Taurus–Auriga VLA surveys, with class III stars detected at a rate of 8.8% ± 1.6%, class IIs at 2.0% ± 1.2%, and combined class 0s, Is and Fs at 8.0% ± 5.4%.
Primordial Black Hole Mergers as Probes of Dark Matter in the Galactic Center
Authors: Ding Qianhang , He Minxi , Takhistov Volodymyr
Published: February 2025

Primordial black holes (PBHs) from the early Universe that can contribute to dark matter (DM) abundance have been linked to gravitational-wave observations. Supermassive black holes at the centers of galaxies are expected to modify the distribution of DM in their vicinity and can result in highly concentrated DM spikes. We revisit PBH merger rates in the presence of DM spikes, tracking their history. We find novel peaked structure in the redshift evolution of PBH merger rates at low redshifts around z ∼ 5. These effects are generic and are present for distinct PBH mass functions and spike profiles, and also can be linked to peaked structure in the redshift evolution of the star formation rate. Redshift evolution characteristics of PBH merger rates can be distinguished from astrophysical black hole contributions and observable with gravitational waves, enabling them to serve as probes of DM in galactic centers.
AstroSat UVIT Survey of M31: New Compact Source Catalog
Authors: Leahy Denis , Ranasinghe Sujith , Mitra Saptadwipa , Rawal Kripansh
Published: February 2025

An ultraviolet survey of M31 was carried out during 2017–2023 with the UltraViolet Imaging Telescope (UVIT) instrument on board the AstroSat Observatory. Here we present far- and near-ultraviolet (FUV and NUV) observations from the M31 UVIT survey, which covers a sky area of ≃3

.

°

5 × 1

.

°

3 with a spatial resolution of ≃1″. The observations included six filter bands in the wavelength range of 120–280 nm. Including the six bands, ≃115,000 sources with signal-to-noise ratio (S/N) ≥ 3 (≃95,000 sources with S/N ≥ 5) were detected at FUV or NUV wavelengths, with the largest set of detections (≃54,000 sources) in the FUV 150 nm band (F148W filter). This is considerably more than for the first version of the M31 source catalog (published in 2020), in part due to additional observations of M31 by UVIT and in part due to improved data processing. The magnitude (m
AB) at which incompleteness sets in is ≃23.0 in the F148W band, with the other bands somewhat less sensitive, with least sensitive band (in m
AB units) N279N with incompleteness for sources fainter than ≃20.3). The faintest sources detectable in F148W have m
AB ≃ 25.4, with other bands having higher minimum detectable brightness, and with N279N having a minimum detectable limit of m
AB ≃ 22.1. The product of this work is the new M31 UVIT compact-source catalog, containing positions, fluxes, magnitudes, and S/N for the sources.
Resistance Operating Concept as a tool for Increasing the Resilience of the State
Authors: Dubec Radek , Nezvalová Eva , Licková Markéta
Published: February 2025

The article describes the issue of implementing the Resistance Operating Concept as part of a comprehensive approach to ensuring the defense of the state and its resilience. The basic conditions necessary for the introduction of that instrument are sought, and a comparative analysis of selected European countries that started to build a resistance movement is carried out. The article further describes the strategic definition of the resistance movement in the conditions of the Czech Republic, the legislative definition of the resistance movement and its anchoring in the framework of mental law, and the connection of the resistance movement to individual phases of the conflict. It analyzes the relationship of the resistance movement to individual phases of the conflict and categorizes the actors of the resistance movement, their roles and the methods used. In conclusion, it defines the necessary conditions for the implementation of the resistance movement into the security and defense system of the state.
Weapon System Acquisition Process Utilizing Design Simulation as Decision Support
Authors: Drozd Jan , Procházka Josef
Published: February 2025

The selection of optimal weapon systems is crucial for national defense. Traditional empirical methods struggle to address the complexities of modern warfare. This article explores the potential of constructive simulation for informed decision-making in this domain. Simulating tactical operations with complex variables, such as terrain, enemy actions, and system interoperability, provides valuable insights into weapon effectiveness. This enables the optimization of acquisitions in line with strategic goals. Design simulation allows for the exploration of factors difficult to test comparison of armament configurations, analysis of enemy tactics, and optimization of unit composition and deployment, saving costs and time. Simulation enables the safe exploration of even high-risk scenarios. Utilizing constructive simulation for weapon selection offers undeniable benefits in terms of effectiveness, safety, and informed decision-making, thereby strengthening defense capabilities and preparedness for future challenges.
Civil War in Myanmar. Causes, Actors, Development
Authors: Nožina Miroslav
Published: February 2025

The civil war in Myanmar has been going on for more than seven decades. After the military coup in February 2021, it has undergone significant structural changes and gained new momentum. The causes of the conflict lie in the inability of different ethnic and political groups to find a way to coexist within a single state entity and the autonomisation of the military. The main actors in the war in Myanmar today are the military junta and its supporters, the democratic opposition and ethnic organisations. After the coup, the strength of the resistance movement and its operational capabilities are growing. However, this growth has its limits, given the continued disunity of opposition forces, the technical superiority of the Myanmar army and the strengthening of its numbers through compulsory conscription.
De l’androgynie chez Virginia Woolf
Authors: Rondeau Corinne
Published: February 2025

Cet article se propose d’explorer une conception politique et éthique de la littérature à travers les essais et romans de Virginia Woolf. Partant du genre biographique et de l’intertextualité qui nourrissent son roman Orlando, les essais Une Chambre à soi et Trois guinées sont reconsidérés comme la tentative d’un nouveau mode d’être. L’androgynie engage la langue plus que les corps et devient la seule issue à tout assujettissement des normes, ou des lois suivant l’ Antigone de Sophocle.
Genre, Tarot, technochamanisme et politique, de Niki de Saint Phalle à Paul B. Preciado
Authors: Toussaint Évelyne
Published: February 2025

Dans des contextes pourtant différents, on trouve chez Niki de Saint Phalle comme chez Paul B. Preciado, des articulations entre Tarot divinatoire, genre, et politique. Le Tarot y devient métaphore d’une philosophie non binaire, voire, chez Preciado, de fluidité et de réversibilité des genres, notions qui, dans la dysphorie même, se posent désormais en termes inextricablement philosophiques, psychanalytiques, anthropologiques, médicaux, esthétiques et politiques, interrogeant nos catégorisations, nos systèmes de valeurs, nos régimes de savoir, de pouvoir, et de vérité.
El Marqués de Santillana ante la tradición cancioneril: linaje y cortesía
Authors: Bustos Álvaro
Published: February 2025

Se muestra la relevancia de don Íñigo López de Mendoza (1398-1458) como poeta y se proponen varias razones que dan cuenta de su influencia en autores posteriores de la tradición cancioneril. Su condición de cabeza del linaje Mendoza, el vínculo humanista que promueve entre obra artística y linaje cortesano, las inquietudes de su última época (retablo, testamento, biblioteca, cancionero) muestran un talento artístico que se percibe igualmente en el cultivo de algunas tradiciones poéticas que secundarán los principales autores de la segunda mitad del XV.
Derrière l’affiche
Authors: Pernot Octave
Published: February 2025

Né de l’opposition à la guerre d’Algérie, le Parti socialiste unifié fut, de 1960 à 1989, de tous les grands combats de la gauche française. Connu pour avoir été un laboratoire d’idées nouvelles, pour son idéal autogestionnaire et pour son rôle lors du mouvement de mai 1968, le PSU est aussi parfois présenté comme ayant été le parti du futur Premier ministre Michel Rocard. L’histoire du PSU ne peut cependant se résumer à une approche en termes d’idéologie politique, ni même à une approche se concentrant sur les grands personnages l’ayant incarné. Le PSU est en effet également le lieu de l’engagement politique de femmes et d’hommes, et c’est à leur militantisme que ce livre souhaite s’intéresser. Qui sont les militantes et les militants du PSU ? Pourquoi ont-ils rejoint un petit parti dont les chances d’accéder au pouvoir paraissaient infimes ? Comment concrètement ont-ils milité ? De quelle manière ont-ils vécu leur engagement au sein du parti ? Autant de questions qui montrent qu’une histoire par le bas du PSU permet, non seulement d’apporter un éclairage nouveau sur ce que fut l’expérience PSU, mais aussi de mieux comprendre quels sont les ressorts de l’engagement militant au sein d’un petit parti.
Introduction. Photographies et algorithmes
Authors: Blaschke Estelle , Bonhomme Max , Joschke Christian , Somaini Antonio
Published: February 2025

Ce numéro de Transbordeur est consacré aux relations réciproques entre la photographie et les algorithmes, en particulier les modèles d’intelligence artificielle (IA), que ce soit pour l’analyse, la modification ou la génération d’images. À travers une mise en perspective des recherches menées depuis les années 1960, au croisement de l’informatique, des technologies de l’infographie (CGI) et des expérimentations artistiques, l’introduction du numéro dessine les contours d’une archéologie de l’image algorithmique. Nous interrogeons la façon dont le tournant computationnel a profondément bouleversé la photographie elle-même, que ce soit dans ses pratiques ou dans son ontologie, ainsi que le fait que les images photographiques ont joué un rôle fondamental comme point de référence dans la conception des modèles d’IA analytique et générative, avec le « photoréalisme » comme horizon.
MEDICAL IMAGE ENHANCEMENT USING HYBRID HONEY BADGER ONE-TO-ONE-BASED OPTIMIZATION-ENABLED ADAPTIVE HISTOGRAM EQUALIZATION
Authors: Narender M. , Khetavath Seetharam
Published: February 2025

In medical science, appropriate monitoring of the function of the human body, physical representations, and accurate disease is a complex task. It helps in diagnosing and treating diseases by revealing internal structures hidden by the skin and bones. Image enhancement techniques play a crucial role in medical imaging, as they improve diagnostic accuracy and visualization. However, the conventional methods were limited by noise sensitivity, lack of adaptability, and computational complexity. Therefore, this paper proposes One-to-One Honey Optimization (OOHO) for medical image enhancement. At first, the input brain Magnetic Resonance Imaging (MRI) image is processed to find the histogram. After that, histogram clipping is performed based on the clipping threshold. Then, the exposure threshold is computed to create sub-histograms. Moreover, the Probability Density Function (PDF) is computed and updated. Likewise, the Cumulative Density Function (CDF) and the mapping function are computed in each sub-histogram. Therefore, the finest enhanced image is obtained by integrating all sub-images. The fitness value is computed utilizing the cost function. Furthermore, the optimal threshold is accomplished by utilizing OOHO, which is developed by the integration of a One-to-One-based Optimizer (OOBO) and Honey Badger optimization (HBO). The evaluation results show that the OOHO attained a Degree of Distortion (DD) of 0.270, a Pear Signal to Noise Ratio (PSNR) of 47.060 dB, a Mean Square Error (MSE) of 0.570, Structural Similarity Index Measure (SSIM) as 0.960, and Root Mean Square Error (RMSE) of 0.755. The high performance is noted by the devised model and the MSE of the OOBO, HBO, hybrid Simulated Annealing-Evaporation Rate-based Water Cycle (SA-ERWCA) algorithm, Particle Swarm Optimization combined with Histogram Equalization (PSO-HE), Genetic Algorithm-based Adaptive Histogram Equalization (GAAHE), High-Quality Guidance Network (HQG-Net), multi-scale attention generative adversarial network (MAGAN), and Gaussian Quantum-behaved Arithmetic Optimization Algorithm (GQAOA) methods are 0.657, 0.637, 0.637, 0.627, 0.670, 0.650, 0.650, and 0.640, respectively.
[Related care in pulmonary rehabilitation: can pulmonary rehabilitation in chronic obstructive pulmonary disease benefit from a multidisciplinary approach?]
Authors: Vitacca Michele , Visca Dina , Spanevello Antonio
Published: February 2025

Chronic Obstructive Pulmonary Disease (COPD) is a common, preventable and treatable disease that is characterized by persistent respiratory symptoms and airflow limitation.Cardiovascular diseases, osteoporosis, depression/ anxiety, musculoskeletal impairment and obstructive sleep apnea are frequent and important comorbidities in COPD, often under-diagnosed, and associated with poor health status and prognosis.Pulmonary rehabilitation improves symptoms, quality of life, pulmonary function, and health care in patients with chronic respiratory disease. By definition it is a comprehensive intervention based on a thorough patient assessment followed by patient-tailored therapies that include, but are not limited to, exercise training, education, and behavior change and designed to improve the physical and psychological condition of people with chronic respiratory disease and to promote the long-term adherence to health-enhancing behaviors.Exercise limitation in patients with COPD is multifactorial and includes ventilatory limitation, gas transfer abnormalities, pulmonary vascular and cardiac dysfunction, limb muscle dysfunction, and comorbid impairments.Overall, pulmonary rehabilitation aims to improve cardiorespiratory and skeletal muscle function improving respiratory symptoms and quality of life in daily life activities adding a synergic support to the pharmacologic inhaled therapy.COPD has a variable natural history, but most of the time chronic respiratory failure complicates disease progression. Supplemental oxygen and noninvasive mechanical ventilation have been proven to improve survival and reduce hospital admissions in COPD patients. Furthermore additional studies have shown that exercise performance benefit from supplemental oxygen and NIV used both during rehabilitation exercise programs and over the night.In conclusion, an overarching approach to diagnosis, assessment of severity of COPD and its frequent comorbidities should guide to a multidisciplinary and synergic approach in terms of pharmacological and nonpharmacological management of a systemic inflammatory syndrome.