bluuebunny/crossref_metadata_2025 huggingface dataset:
THE STATE OF HORTICULTURE IN THE SAMARKAND REGION IN THE SECOND HALF OF THE 19TH CENTURY – THE BEGINNING OF THE 20TH CENTURY
Authors:   PhD student, Department of Source Studies and Archival Studies National University of Uzbekistan, Jonibek Butayev
Published: May 2022

During the colonial period, gardening was one of the most important areas of agriculture in the Samarkand region. The article reveals the reforms of the Russian Empire in the second half of the 19th - early 20th centuries in the field of horticulture in the Samarkand region, statistical data on the yield of grapes, the influence of grape varieties and the expansion of horticulture on agriculture. An assessment is also given of the impact of changes and innovations carried out by the Russian administration in this area in the historical period when the region was called the Zeravshan district, and then the Samarkand region. At the same time, statistics on vineyards and yields in the region were compared with neighboring regions.
CAPABILITY OF DEVELOPMENT OF SMALL MUSEUMS OF UBEKISTAN.THE DESIRABLE AND THE REACHABLE
Authors:   Researcher Kamoliddin Behzod National Institute Of Arts And Design Tashkent, Uzbekistan, Finkelshtein Inessa
Published: May 2022

This article is about the development and reforms of institutions in transitional periods through the analysis of the history of memorial museums in Tashkent. Apart from other museums, the author took the memorial museum of a great Uzbek actress - Tamara Khanum, as positive experience, which give hope to see development of such institutions
THE INFLUENCEOF CAVITYCONFIGURATION FACTOR (C-FACTOR) ON THE EFFICIENCY OF DIRECT DENTAL RESTORATIONS WITH RESIN COMPOSITE MATERIALS
Authors:   PhD, assistant professor of the department of hospital prosthodontics of Tashkent State dental institute., Uzbekistan, T.O. Mun , Kim V.E. ,   Assistant of the department of hospital prosthodontics of Tashkent State dental institute, Uzbekistan, Nematillaeva Z.Sh. ,   3 year students of Dentistry faculty of Tashkent State dental institute, Uzbekistan, Irisboeva F.F. ,   3 year students of Dentistry faculty of Tashkent State dental institute, Uzbekistan
Published: May 2022

In modern dentistry, the term C- factor, or Configuration Factor, has just recently gained popularity. Itsworth is determined by a direct restoration's initial polymerization stress assessment. It's also worth noting that, in today's dentistry, composite materials with excellent aesthetic, physical, and mechanical benefits are the most popular way of treating defects in the hard tissues of the tooth. The concern of shrinkage during the polymerization of the material, as previously mentioned, remains relevant. In cavities with high C-factor values, the impact of polymerization stress is especially noticeable. These difficulties, as well as their impact and solutions, will be discussed in this thesis.
CHARACTERISTICS OF ARTERIAL WALL STIFFNESS IN PATIENTS WITH CHRONIC HEART FAILURE WITH PRESERVED SYSTOLIC FUNCTION OF THE LEFT VENTRICLE
Authors:   Assistant of the Department of Propaedeutics of Internal Medicine Andijan State Medical Institute Andijan, Uzbekistan, S.A. Kityan
Published: May 2022

Modern methods of acute myocardial infarction (AMI) treatment allow to avoid early postinfarction remodeling, but increase the number of patients with chronic heart failure (CHF) and preserved systolic heart function. The stiffness of the main arteries in patients with CHF and preserved left ventricular (LV) ejection fraction (EF) after AMI has been found to be increased. The severity of CHF depends on the increase in pulse wave velocity. The relationship between increased arterial stiffness and BNP and NT-pro BNP levels in patients with CHF with preserved LV EF 1 year after AMI was revealed.
THE FREQUENCY OF DETECTION AND CHARACTERISTICS OF TROMBOCYTOPATHY AT DIFFERENT STAGES OF PREGNANCY
Authors:   Tashkent Medical Academy, Tashkent, Uzbekistan, D.L. Zaynutdinova , F.A. Bokiyeva ,   Tashkent Medical Academy, Tashkent, Uzbekistan
Published: May 2022

The research has focused on the frequency, causes and consequences of thrombocytopathies acquired at all stages of pregnancy. The purpose of which was identification of the frequency and characteristics of thrombocytopathies at different stages of pregnancy. Clinical material for the study was obtained from 30 pregnant women aged 18-35 years who were treated from January 2021 to March 2022 in the department of pathology of pregnant women of the Tashkent Medical Clinic of the Ministry of Health of the Republic of Uzbekistan.
The UNESCO site of the Casbah in the Master Plan of Algiers (PDAU): between heritage requirements and the need for coordination
Authors: Boukader Mohamed , Chennaoui Youcef
Published: May 2022

This article addresses the question of how to protect those historical, urban sites, inscribed on the UNESCO World Heritage List, from the negative impact of stress, caused by the urban dynamic. We put forward the hypothesis that, as part of a holistic vision of protection, safeguard measures must be integrated into the urban development plans for those towns in which these sites are an integral part. This will avoid conflict between the demands of development, and the safeguard measures. Through the example of the UNESCO site of the Casbah, we will examine the strategy of the PDAU of Algiers, to safeguard of the UNESCO site and its reintegration into the Algiers agglomeration. This article adopts a methodology based on a critical, comparative analysis of the strategic heritage plan, as laid down in the PDAU. It examines the proposed safeguarding measures and evaluates its coordination with the safeguarding plan. An examination of the solutions proposed by the PDAU reveals several morphological weaknesses and contradictory prescriptions, favoring a poor connection between the safeguard plan and the PDAU. Consequently, only an integrated approach to urban conservation will reinforce the protection of the site and ensure its reconnection with the Algiers metropolis.
From cradle to grave? A global hotspot and new species of the genus Lobaria discovered in the Himalayas and the Hengduan Mountains
Authors: Yang M.X. , Wang L.S. , Miao C.C. , Scheidegger C.
Published: May 2022

In this study, the East Asian diversity of green-algal Lobaria was evaluated by applying both morphological and phylogenetic approaches. A multi-locus phylogenetic analysis of 72 green-algal Lobaria specimens was performed using a three-locus and time-calibrated species-tree
approach. The analyses demonstrate that pairs of sexually and vegetatively reproducing lineages split into highly supported monophyletic clades. Taxonomically, 11 green-algal Lobaria species were identified as new to science, while 10 were previously described species. The species differentiated
during the Pliocene and Pleistocene. The coincidence of paleoclimatic events with estimated dates of divergence support a bioclimatic hypothesis for species evolution in the green-algal Lobaria. Molecular phylogenies, a summary of diversity, detailed new species descriptions and geographical
analyses are provided. Special recognition of species with a long evolutionary history, which merit high conservation priority, will be critical for preserving geographically restricted endemics in the Himalayas and the Hengduan Mountains, where habitat loss is driving rapid declines.
Determinan Kepuasan Kerja Terhadap Kinerja Pada Karyawan Pt Bank Central Asia Cabang Utama Pasar Baru Jakarta
Authors: Wijaya Adi , Marhalinda Marhalinda , Rinaldi Rinaldi
Published: May 2022

Tujuan penelitian ini adalah untuk mengetahui pengaruh pengembangan karir, kompetensi dan kompensasi baik secara parsial maupun secara bersama-sama terhadap kinerja karyawan melalui kepuasan kerja pada karyawan PT Bank Central Asia Cabang Utama Pasar Baru Jakarta. Populasi dalam penelitian ini adalah karyawan PT Bank Central Asia Cabang Utama Pasar Baru Jakarta. Metode penelitian yang digunakan dalam penelitian ini adalah metode survey deskriptif dan survey eksplanatory dengan ukuran sampel sebanyak 285 responden, serta metode analisis data yang digunakan adalah SEM (Structural Equation Model) versi 8.80

Hasil penelitian pada persamaan 1 menunjukkan terdapat pengaruh positif dan signifikan baik secara parsial maupun secara bersama-sama pengembangan karir, kompetensi dan kompensasi terhadap kepuasan kerja dengan kontribusi sebesar 88% dan sisanya sebesar 12% dipengaruhi oleh variabel lain yang tidak diteliti. Variabel yang paling dominan mempengaruhi kepuasan kerja adalah variabel kompetensi dengan dimensi yang paling merefleksikan adalah kemampuan.

Hasil penelitian pada persamaan 2 menunjukkan terdapat pengaruh positif dan signifikan baik secara parsial maupun secara bersama-sama pengembangan karir, kompetensi dan kompensasi terhadap kinerja karyawan dengan kontribusi sebesar 72% dan sisanya sebesar 28% dipengaruhi oleh variabel lain yang tidak diteliti. Variabel yang paling dominan mempengaruhi kinerja karyawan adalah variabel kepuasan kerja dengan dimensi yang paling merefleksikan adalah rekan kerja. Variabel kepuasan kerja selain dominan juga berperan sebagai variabel full mediating bagi pengembangan karir, kompetensi dan kompensasi dalam mempengaruhi kinerja karyawan. Untuk meningkatkan kinerja karyawan, terutama untuk dimensi pengetahuan maka perlu meningkatkan kepuasan kerja terutama pada dimensi rekan kerja, untuk pengembangan karir terutama pada dimensi prestasi kerja, untuk kommpetensi terutama pada dimensi kemampuan dan untuk kompensasi terutama pada dimensi kompensasi langsung
NEW SCALE INHIBITORS BASED ON MODIFIED POLYETHYLENE TEREPHTHALATE WASTE
Authors:   NJSC «KAZAKH NATIONAL RESEARCH TECHNICAL UNIVERSITY» K.I. SATPAEV, Republic of Kazakhstan, 050043, Almaty, st. Satpaeva 22, BOIKO G.I. , SARMURZINA R.G. ,   ALE «ASSOCIATIONS OF PRODUCERS AND CONSUMERS OF PETROCHEMICAL PRODUCTS», Republic of Kazakhstan, 010000, Nur-Sultan, st. E 10, 17/10, KARABALIN U.S. ,   3ALE «KAZAKHSTAN ASSOCIATION OF ORGANIZATIONS OF THE OIL AND GAS AND ENERGY COMPLEX «KAZENERGY», Republic of Kazakhstan, 010000, Nur-Sultan, 19 Kabanbai Batyr Ave., Block A, TIESOV D.А. ,   4JSC NC "KAZMUNAYGAS" REPUBLIC OF KAZAKHSTAN, 010000, Nur-Sultan, st. D. Kunaeva 8, LYUBCHENKO N.P. ,   NJSC «KAZAKH NATIONAL RESEARCH TECHNICAL UNIVERSITY» K.I. SATPAEV, Republic of Kazakhstan, 050043, Almaty, st. Satpaeva 22, MEREKENOV A.K. ,   NJSC «KAZAKH NATIONAL RESEARCH TECHNICAL UNIVERSITY» K.I. SATPAEV, Republic of Kazakhstan, 050043, Almaty, st. Satpaeva 22
Published: May 2022

For the first time, the synthesis of new scaling inhibitors – esters of phosphoric acids, based on the reactions of phosphorylation of hydroxyethylterephthalamide with polyphosphoric acid, was theoretically substantiated and experimentally carried out. The esterification with polyphosphoric acid of bishydroxyethyterephthalamide was carried out at a temperature of 130-140°C for 4-6 hours. Bishydroxyethyl terephthalamide is a product of the aminolysis of polyethylene terephthalate, including in the form of production waste or recycling of polyethylene terephthalate. Using 1 H-, 31P spectroscopy the structure and composition of new reagents were proved. The inhibitory activity of phosphoric acid esters of bishydroxyethyl terephthalamide was studied on model water-salt solutions. It has been established that inhibitors have complex actions in relation to carbonate and sulfate deposits. An effective amount to inhibit sulfate scale is 2-10 ppm, carbonate scale 10-30 ppm. The degree of inhibition reaches 100%. Inhibitors can be recommended to protect pipelines from scale deposits during oil transportation.
Analysis on vehicular control system in self-driving cars using artificial intelligence and machine vision
Authors:   Phd research scholar, Department of EXTC, PRMIT & R Badnera, Amravati, India ,, Utane Akshay , Mohod S. W ,   Professor , Department of EXTC, PRMIT & R Badnera, Amravati, India
Published: May 2022

Due to the very dynamic environment and difficult to perform a required system in the vast range of situations that it may meet after deployment, developing a controller for autonomous cars capable of giving appropriate performance across all driving conditions is tough. Artificial intelligence technologies, on the other hand, have showed considerable promise in terms of not only delivering exceptional results for difficult and non-linear control issues, but also in generalizing previously taught principles to new circumstances. Artificial intelligence for vehicle control has become progressively popular as a result of these factors. Although much progress has been made in this sector, these efforts have yet to be properly described. This study reviews a wide range of research studies that have been published in the literature that attempt to operate a vehicle using artificial intelligence in self-driving cars. Unlike other review studies, we look at the theory behind self-driving vehicles from an artificial intelligence standpoint, as well as contemporary implementations and critical assessments.
JEEVAN ONLINE HEALTH APPLICATION
Authors:   CSE, Sreyas Institute of Engineering & Technology, Hyderabad-500068, India, M Nagesh , Rangineni Vardhan reddy ,   CSE, Sreyas Institute of Engineering & Technology, Hyderabad-500068, India, Gantla Nithin reddy ,   CSE, Sreyas Institute of Engineering & Technology, Hyderabad-500068, India, Kotha Sri teja reddy ,   CSE, Sreyas Institute of Engineering & Technology, Hyderabad-500068, India, B Shashi Kumar ,   CSE, Sreyas Institute of Engineering & Technology, Hyderabad-500068, India
Published: May 2022

The importance of health care is immense in society and over the past years, this sector has been evolving to produce a more efficient and computerized system. On our health service website, we try to develop software in which a patient registers on the website. then the patient is introduced to different features of the website such as health care tips, medication tips,pandemic awareness, nearest hospital location, blood availability and blood availability, and many more. Our software even allows patients to book a bed in a hospital and also allows the patient to buy blood from the nearest blood bank. Moreover, our software provides clear and actionable information for all users. This application maintains the entire data in a centralized and secured database server to maintain consistency in report generation and allows users to access it from any location. This is an online application that allows multi-user access to the system and to track or manage the data simultaneously. Various roles and authentications have been provided and access to various areas in the tool is restricted according to the role given to users. This system design is modularization into various categories. This system has enriched UI so that a novice user did not feel any operational difficulties. This system mainly concentrated on designing various reports requested by the users as well as higher with export to excel options.
EXAMINING THE RELATIONSHIP OF SHOTGUN INDUSTRY CLUSTER AND REGIONAL DEVELOPMENT WITH A THREE STAR ANALYSIS: THE CASE OF BEYŞEHİR DISTRICT, KONYA PROVINCE
Authors: Karacor Zeynep , Yörük Bahadır , Güvenek Burcu
Published: May 2022

The concept of clustering is a concept that has many dimensions with its social and economic aspects. The theoretical background of this concept has developed within the disciplines of regional economics, which examines the regional development process with economic geography and regional development differences, which are aimed at explaining the regional distribution of economic activities and place of production factors. In general, regional de-velopment is the whole of the activities carried out in order to improve the existing standards on the economic and social basis of a certain geographical area within the borders of the country. If development activities are successful in different regions, it will be possible to achieve the development of the country. This study, it was aimed to examine the effect of the shotgun industry cluster in Beyşehir on regional development, and three-star analysis was used for this. The three-star analysis was developed by the “European Cluster Observatory” and allowed it to be a model used in the creation of potential cluster maps in the European Union. As of 2019, it has been determined that there are 165 companies engaged in production in the shotgun industry in Turkey, and 139 of these companies are clustered in the Beyşehir district of Konya. While it has been revealed that it has a very strong competitive power in exports with this cluster, it has been observed that it has a value well above Turkey’s average especially in terms of added value, employ-ment, size, and specialization.
INFLUENCE OF SELECTED HUMAN RESOURCES ATTRIBUTES ON THE CONDITION OF THE LABOR MARKET IN POLAND
Authors: Brożek Katarzyna , Poteralska Beata , Łabędzka Joanna
Published: May 2022

The aim of the article was to identify statistically significant determinants of human capital influencing the condition of the labour market in Poland. The resources of public statistics were used to collect empirical data. The collected data was developed using the technique of estimating the structural parameters of the regression function using the classical method of least squares (LSM). Due to the diversity of human capital factors, 4 thematic areas were identi-fied, defined by 11 predictors describing the attributes of human capital. All the variables turned out to be statistically significant and had a positive effect on the improvement of the labour market condition in Poland, measured by the unemployment rate. The practical implication of the study is to obtain information about the significance level of the studied variables. This allows us to conclude which attributes of human capital have the greatest impact on the situation on the labour market. On this basis, it is possible to decide on taking actions aimed at creating human capital through the use of tools intended to reduce unemployment. The study should be considered preliminary due to limitations only 4 areas – Science, Information Society, Innovation and Technology in 2011–2020 were analyzed. Conclusions may con-tribute to further in-depth research.
IMPACT EVALUATION OF THE GRADUATE PRACTICE INTERVENTION USING THE CART METHOD
Authors: Gabrikova Barbora , Svabova Lucia
Published: May 2022

The contribution for graduate practice is one of the measures of active labour market policy in Slovakia aimed at gaining first job experience and contacts for young school-graduates. The main aim of the study is a counterfactual impact evaluation of this contribution on the employability of its participants. The evaluation is aimed at the period 2015-2017 and realized using the real database of 12,953 treated eligible participants of Graduate practice and 83,907 non-treated controls. For the evaluation, propensity score matching was used, where the propensity scores were estimated by the method of Classification and Regression Trees. The results of the study show that treated individuals were employed on average 3 months longer and had an average salary of € 216.76 higher than non-treated during the 24-months impact period after the intervention.
THE METHOD FOR EVALUATION OF CONSUMPTION TAX REGRESSIVITY
Authors: Juruss Maris , Šmite-Roķe Baiba , Zeila Anita
Published: May 2022

Tax policy, tax progressivity, and income redistribution from higher to lower income earnings are effec-tive economic measures for reducing inequality. The aim of the paper is to elaborate principles of measurement of consumption tax impact on income inequality or level of consumption tax regressivity. The objectives are to compare methods for evaluation of income and consumption tax impact to income inequality and to find the possible solutions how to measure consumption tax impact to income inequality. As result was developed a specially designed method which can be used for evaluation of consumption tax impact to income inequality, as well as an appropriate measure-ment is recommended.
TWO-SPEED OR THREE-SPEED RECOVERY IN POST-COVID ERA: REGIONAL AND SECTORAL DEVELOPMENT
Authors: Auzina-Emsina Astra , Ozolina Velga
Published: May 2022

Sustainable and balanced recovery is a key factor to ensure the economic performance. Two-speed recovery pattern is already observed. Three-speed recovery represents the most likely pattern of recovery in majority in the EU countries in the post-COVID era due to the common dramatic decline in transport and tourism, relative minor impact on large part of essential manufacturing and services. It is believed that we will face large increase in air transport, minor increase in boomed courier and postal sector, and stability in other transport branches. The findings argue that urban areas are shocked more and modelled recovery scenarios reveal faster recovery compared to rural areas. Policy makers and government are encouraged to relocate and modify the recovery plans to stimulate balanced reginal recovery, reducing imbalances, rural-urban migration and rural-urban income inequality.
TRANSFORMATION OF EDUCATION POLICY STRATEGIES AND THE MANAGEMENT OF VIRTUAL LEARNING ENVIRONMENT DURING COVID-19
Authors: Kovaitė Kristina , Neifartas Sergejus , Butvilas Tomas
Published: May 2022

The paper examines the modelling dimensions of the virtual teaching/learning environment and its practice aiming to reflect in the changing environment. The aim of the research is to reveal the process of modelling the virtual learning environment by analysing the policy of the learning environment changes and how is reflected in the educa-tion and economic development policies. Focus groups and interviews are used as qualitative research methods. The results of this research make an input for both academic and practice areas of education management, social-learning innovations, and human resources development. Findings particularly show the nature of learning that becomes more learner-centred; learning opportunities meet the individual needs; innovative educational concepts will be implement-ed through experiential or inclusive learning and social-cognitive processes will meet the needs of economic change. The suggestions to be used by the economic development and education policymakers and practitioners, and focus on enabling the learning environments to adapt to the labour market and business development.
EXPRESSION AND ECONOMIC IMPACT OF INNOVATIVENESS IN THE TOURISM SECTOR
Authors: Baranskaitė Edita , Labanauskaitė Daiva , Župerkienė Erika
Published: May 2022

The expression of innovation is captured in increasingly diverse processes. Both technological and non-tech-nological innovations are applied. This is because tourism businesses need to adapt to changing market conditions and to offer a new generation of modern services. Qualitative changes in tourism activities due to the availability of tech-nology for the general public also lead to an increasing degree of self-service when organising a trip, which inevitably affects changes in the number of jobs created by tourism and the distribution of income in tourism and tourism-related industries. By treating the current stage of tourism globalization as a stage of globalization based on information dis-semination and image engineering, where countries compete for the efficiency of information dissemination, it is im-portant to objectively assess the extent to which tourism innovativeness enhances the economic benefits of tourism. The aim of the research is to evaluate the economic impact caused by tourism innovativeness on the basis of the latest trends in the expression of tourism innovativeness. Regression analysis revealed that in 2012-2017, the indicators of tourism innovation had a direct and indirect economic impact.
THE IMPACT OF FINANCIAL SYSTEMS ON ECONOMIC GROWTH
Authors: Kravec Ksenija , Jurevičienė Daiva
Published: May 2022

The article aims to determine the level of impact of the financial sector on economic growth. The financial sector’s activities provide financing for business development, provide borrowing opportunities and provide compre-hensive protection when concluding insurance contracts, which in the long run ensures economic growth. It is es-sential to understand which financial sector activities are most significant in economic growth. Borrowing and equity trading have been found to positively impact economic growth, while the market capitalisation of companies has been found to harm economic growth. The results can be used to develop growth plans for financial institutions that pro-mote economic development.
How Well Can We Measure Galaxy Dust Attenuation Curves? The Impact of the Assumed Star-dust Geometry Model in Spectral Energy Distribution Fitting
Authors: Lower Sidney , Narayanan Desika , Leja Joel , Johnson Benjamin D. , Conroy Charlie , Davé Romeel
Published: May 2022

One of the most common methods for inferring galaxy attenuation curves is via spectral energy distribution (SED) modeling, where the dust attenuation properties are modeled simultaneously with other galaxy physical properties. In this paper, we assess the ability of SED modeling to infer these dust attenuation curves from broadband photometry, and suggest a new flexible model that greatly improves the accuracy of attenuation curve derivations. To do this, we fit mock SEDs generated from the simba cosmological simulation with the prospector SED fitting code. We consider the impact of the commonly assumed uniform screen model and introduce a new nonuniform screen model parameterized by the fraction of unobscured stellar light. This nonuniform screen model allows for a nonzero fraction of stellar light to remain unattenuated, resulting in a more flexible attenuation curve shape by decoupling the shape of the UV attenuation curve from the optical attenuation curve. The ability to constrain the dust attenuation curve is significantly improved with the use of a nonuniform screen model, with the median offset in UV attenuation decreasing from −0.30 dex with a uniform screen model to −0.17 dex with the nonuniform screen model. With this increase in dust attenuation modeling accuracy, we also improve the star formation rates (SFRs) inferred with the nonuniform screen model, decreasing the SFR offset on average by 0.12 dex. We discuss the efficacy of this new model, focusing on caveats with modeling star-dust geometries and the constraining power of available SED observations.
Looking at the Distant Universe with the MeerKAT Array: Discovery of a Luminous OH Megamaser at z > 0.5
Authors: Glowacki Marcin , Collier Jordan D. , Kazemi-Moridani Amir , Frank Bradley , Roberts Hayley , Darling Jeremy , Klöckner Hans-Rainer , Adams Nathan , Baker Andrew J. , Bershady Matthew , Blecher Tariq , Blyth Sarah-Louise , Bowler Rebecca , Catinella Barbara , Chemin Laurent , Crawford Steven M. , Cress Catherine , Davé Romeel , Deane Roger , de Blok Erwin , Delhaize Jacinta , Duncan Kenneth , Elson Ed , February Sean , Gawiser Eric , Hatfield Peter , Healy Julia , Henning Patricia , Hess Kelley M. , Heywood Ian , Holwerda Benne W. , Hoosain Munira , Hughes John P. , Hutchens Zackary L. , Jarvis Matt , Kannappan Sheila , Katz Neal , Kereš Dušan , Korsaga Marie , Kraan-Korteweg Renée C. , Lah Philip , Lochner Michelle , Maddox Natasha , Makhathini Sphesihle , Meurer Gerhardt R. , Meyer Martin , Obreschkow Danail , Oh Se-Heon , Oosterloo Tom , Oppor Joshua , Pan Hengxing , Pisano D. J. , Randriamiarinarivo Nandrianina , Ravindranath Swara , Schröder Anja C. , Skelton Rosalind , Smirnov Oleg , Smith Mathew , Somerville Rachel S. , Srianand Raghunathan , Staveley-Smith Lister , Tanaka Masayuki , Vaccari Mattia , van Driel Wim , Verheijen Marc , Walter Fabian , Wu John F. , Zwaan Martin A.
Published: May 2022

In the local universe, OH megamasers (OHMs) are detected almost exclusively in infrared-luminous galaxies, with a prevalence that increases with IR luminosity, suggesting that they trace gas-rich galaxy mergers. Given the proximity of the rest frequencies of OH and the hyperfine transition of neutral atomic hydrogen (H i), radio surveys to probe the cosmic evolution of H i in galaxies also offer exciting prospects for exploiting OHMs to probe the cosmic history of gas-rich mergers. Using observations for the Looking At the Distant Universe with the MeerKAT Array (LADUMA) deep H i survey, we report the first untargeted detection of an OHM at z > 0.5, LADUMA J033046.20−275518.1 (nicknamed “Nkalakatha”). The host system, WISEA J033046.26−275518.3, is an infrared-luminous radio galaxy whose optical redshift z ≈ 0.52 confirms the MeerKAT emission-line detection as OH at a redshift z
OH = 0.5225 ± 0.0001 rather than H i at lower redshift. The detected spectral line has 18.4σ peak significance, a width of 459 ± 59 km s−1, and an integrated luminosity of (6.31 ± 0.18 [statistical] ± 0.31 [systematic]) × 103
L
⊙, placing it among the most luminous OHMs known. The galaxy’s far-infrared luminosity L
FIR = (1.576 ±0.013) × 1012
L
⊙ marks it as an ultraluminous infrared galaxy; its ratio of OH and infrared luminosities is similar to those for lower-redshift OHMs. A comparison between optical and OH redshifts offers a slight indication of an OH outflow. This detection represents the first step toward a systematic exploitation of OHMs as a tracer of galaxy growth at high redshifts.
Titan Stratospheric Haze Bands Observed in Cassini VIMS as Tracers of Meridional Circulation
Authors: Kutsop N. W. , Hayes A. G. , Corlies P. M. , Le Mouélic S. , Lunine J. I. , Nixon C. A. , Rannou P. , Rodriguez S. , Roman M. T. , Sotin C. , Tokano T. ,   The Cassini VIMS Team
Published: May 2022

We analyzed Cassini data to derive the nature and evolution of circumglobal annuli observed in the stratosphere of Titan, Saturn's largest moon. The annuli were observed between 2004 and 2017 in data acquired by the Visual and Infrared Mapping Spectrometer on board the Cassini spacecraft. We observed a north polar annulus, an equatorial annulus, and several secondary annuli. Pre-Cassini telescopic observations by the Hubble Space Telescope and Keck reported an atmospheric feature consistent with the presence of a south polar annulus between 1999 and 2001, although this feature was not observed by Cassini. Relative to the atmosphere near the annuli, they appear dark at 300–500 nm and bright in methane absorption channels such as the ones at 900 and 1150 nm. The stratosphere seems to rotate around the north pole. Alternatively, it seems to rotate about a point offset from solid-body rotation axis by a few degrees; this point in turn rotates around the solid-body rotation axis.
La logique du fondement selon Hegel
Authors: Béguin Victor
Published: May 2022

Résumé L’article propose une étude de la conception hégélienne du fondement ( Grund ) telle que la présentent les textes de Hegel sur la logique. Son objectif est double : il s’agit de proposer une caractérisation du concept hégélien de fondement, et d’étudier, sur un cas précis, la manière dont la logique hégélienne produit une critique en acte de la métaphysique et de sa critique kantienne. Pour ce faire, l’analyse s’appuie non seulement sur les textes publiés par Hegel ( Science de la logique et Encyclopédie ), mais aussi sur des cahiers d’auditeurs des Leçons sur la logique , récemment publiés et encore peu exploités.
Participer à un groupe selon Sartre
Authors: Malinge Yoann
Published: May 2022

Résumé Nous interrogeons la participation d’un individu à un collectif dans la pensée de Sartre. Bien qu’ils agissent de la même manière, les agents n’ont pas toujours conscience qu’ils participent à un collectif ou bien telle n’est pas leur intention. Il faut alors se demander à quelles conditions l’action des agents peut devenir commune. Pour traiter ces perspectives, l’article étudie la série avant d’expliquer comment elle peut devenir un véritable groupe. Ainsi, il est possible de montrer l’originalité de la pensée sartrienne, comme forme d’individualisme qui met l’action au principe de la constitution du groupe.
La transformation des identifications raciales en Martinique sous l’effet des migrations vers la France hexagonale
Authors: Célestine Audrey
Published: May 2022

Tandis que les acteurs du débat politique local voyaient le processus de départementalisation de 1946 tantôt comme une forme originale de décolonisation, tantôt comme un prolongement de la domination coloniale sous d’autres formes, la Martinique – de même que l’ensemble des « outre-mer » – a vécu d’importantes transformations sociales. Le niveau de vie s’est élevé, les infrastructures se sont modernisées, et surtout, la politique de migration organisée via le Bumidom a durablement transformé le territoire, faisant des circulations entre l’île et l’Hexagone une expérience partagée par la majorité des familles martiniquaises. Quelles sont aujourd’hui les conséquences de ces circulations migratoires sur les formes d’identification et d’assignation raciales ? Dans cette île marquée par des représentations et des hiérarchies socio-raciales héritées de l’histoire, et alors que les départs « outre-la-mer » demeurent fréquents pour les Martiniquais, il convient d’analyser les nouvelles façons d’être blanc·he ou noir·e.
Management du capital humain ou des talents ? Proposition d’un modèle intégrateur
Authors: Goujon Belghit Anne , Husser Jocelyn , Sefiani Saïd
Published: May 2022

Cette recherche ambitionne de rapprocher le concept de capital humain avec celui du management des talents afin de proposer un modèle intégrateur permettant d’identifier des pratiques de management stratégiques qui se déclinent en 16 possibilités. Cette matrice tridimensionnelle intègre le degré de rareté, la valeur ou encore le niveau d’identification des pratiques : individuel, groupe, organisationnel ou inter-organisation. Cette matrice offre un guide pour les organisations permettant d’adopter une vision complète de leurs pratiques managériales et évite les risques de dispersion.
Le droit comme outil diplomatique : le cas de l'offensive américaine contre Huawei
Authors: Corcoral Mark
Published: May 2022

Résumé Depuis 2018, les États-Unis mènent une vaste initiative diplomatique visant à convaincre leurs partenaires et alliés d’exclure les équipements Huawei de leurs réseaux de télécommunications. Parallèlement, cette entreprise chinoise fait l’objet de poursuites pénales – dont l’une a conduit à l’arrestation de sa directrice financière – et de sanctions économiques – qui prennent pour cible ses chaînes d’approvisionnement. Examinant ce volet juridique de l’offensive américaine contre Huawei, l’objectif de cet article est de montrer comment les États-Unis utilisent leur droit à des fins de politique étrangère. Pour cela, nous procéderons en deux temps. D’abord, nous montrerons que l’engagement de poursuites pénales permet au gouvernement américain de tirer parti de l’aura symbolique du droit, dans le but de mettre en cause l’intégrité morale de la direction de Huawei. Ensuite, nous montrerons que le recours aux sanctions lui permet de tirer parti de la malléabilité du droit, afin de susciter des interrogations quant à la capacité du groupe à répondre à la demande de ses clients. Par conséquent, le droit est avant tout mobilisé pour provoquer de la méfiance envers Huawei. C’est donc moins le comportement de l’entreprise que les États-Unis cherchent ainsi à changer que celui de leurs partenaires et alliés. Instrument d’influence plus que de puissance, le droit apparaît alors davantage comme un outil diplomatique qu’une arme de guerre conventionnelle ( lawfare ) ou économique ( economic lawfare ) dans la politique étrangère américaine.
Global well-posedness of 2D incompressible Magnetohydrodynamic equations with horizontal dissipation
Authors: Suo Xiaoxiao , Jiu Quansen
Published: May 2022

This paper focuses on two-dimensional incompressible non-resistive MHD equations with only horizontal dissipation in \begin{document}$ \mathbb{T}\times\mathbb{R} $\end{document}. Invoking three Poincaré-type inequalities about the horizontal derivative, we study the global well-posedness of the system near a background magnetic via the structure of the perturbation MHD system and the symmetry condition imposed on the initial data. By a precise time-weighted energy estimate, we also establish the global well-posedness of the system with only horizontal magnetic damping. Here we overcome the difficulties brought by the absence of magnetic diffusion and the appearance of the boundary. We note that the stability of MHD equations with one-directional dissipation in \begin{document}$ \mathbb{R}^2 $\end{document} or a bounded domain appears to be unknown.
Convergence of deep fictitious play for stochastic differential games
Authors: Han Jiequn , Hu Ruimeng , Long Jihao
Published: May 2022

Stochastic differential games have been used extensively to model agents' competitions in finance, for instance, in P2P lending platforms from the Fintech industry, the banking system for systemic risk, and insurance markets. The recently proposed machine learning algorithm, deep fictitious play, provides a novel and efficient tool for finding Markovian Nash equilibrium of large \begin{document}$ N $\end{document}-player asymmetric stochastic differential games [J. Han and R. Hu, Mathematical and Scientific Machine Learning Conference, pages 221-245, PMLR, 2020]. By incorporating the idea of fictitious play, the algorithm decouples the game into \begin{document}$ N $\end{document} sub-optimization problems, and identifies each player's optimal strategy with the deep backward stochastic differential equation (BSDE) method parallelly and repeatedly. In this paper, we prove the convergence of deep fictitious play (DFP) to the true Nash equilibrium. We can also show that the strategy based on DFP forms an \begin{document}$ \epsilon $\end{document}-Nash equilibrium. We generalize the algorithm by proposing a new approach to decouple the games, and present numerical results of large population games showing the empirical convergence of the algorithm beyond the technical assumptions in the theorems.
Prioritizing COVID-19 vaccination. Part 1: Final size comparison between a single dose and double dose
Authors: Kobayashi Tetsuro , Nishiura Hiroshi
Published: May 2022

In response to the coronavirus disease 2019 (COVID-19) pandemic, Japan conducted mass vaccination. Seventy-two million doses of vaccine (i.e., for 36 million people if a double dose is planned per person) were obtained, with initial vaccination of the older population (≡ 65 years). Because of the limited number of vaccines, the government discussed shifting the plan to administering only a single dose so that younger individuals (<65 years) could also be vaccinated with one shot. This study aimed to determine the optimal vaccine distribution strategy using a simple mathematical method. After accounting for age-dependent relative susceptibility after single- and double-dose vaccination (vs and vd, respectively, compared with unvaccinated), we used the age-dependent transmission model to compute the final size for various patterns of vaccine distributions. Depending on the values of vs, the cumulative risk of death would be lower if all 72 million doses were used as a double dose for older people than if a single-dose program was conducted in which half is administered to older people and the other half is administered to adults (i.e., 1,856,000 deaths in the former program and 1,833,000-2,355,000 deaths [depending on the values of vs] in the latter). Even if 90% of older people were vaccinated twice and 100% of adults were vaccinated once, the effective reproduction number would be reduced from 2.50 to1.14. Additionally, the cumulative risk of infection would range from 12.0% to 54.6% and there would be 421,000-1,588,000deaths (depending on the values of vs). If an epidemic appears only after completing vaccination, vaccination coverage using a single-dose program with widespread vaccination among adults will not outperform a double-dose strategy.
Comparison of the performance and reliability between improved sampling strategies for polynomial chaos expansion
Authors: Weise Konstantin , Müller Erik , Poßner Lucas , Knösche Thomas R.
Published: May 2022

As uncertainty and sensitivity analysis of complex models grows ever more important, the difficulty of their timely realizations highlights a need for more efficient numerical operations. Non-intrusive Polynomial Chaos methods are highly efficient and accurate methods of mapping input-output relationships to investigate complex models. There is substantial potential to increase the efficacy of the method regarding the selected sampling scheme. We examine state-of-the-art sampling schemes categorized in space-filling-optimal designs such as Latin Hypercube sampling and L1-optimal sampling and compare their empirical performance against standard random sampling. The analysis was performed in the context of L1 minimization using the least-angle regression algorithm to fit the GPCE regression models. Due to the random nature of the sampling schemes, we compared different sampling approaches using statistical stability measures and evaluated the success rates to construct a surrogate model with relative errors of $ < 0.1 $%, $ < 1 $%, and $ < 10 $%, respectively. The sampling schemes are thoroughly investigated by evaluating the y of surrogate models constructed for various distinct test cases, which represent different problem classes covering low, medium and high dimensional problems. Finally, the sampling schemes are tested on an application example to estimate the sensitivity of the self-impedance of a probe that is used to measure the impedance of biological tissues at different frequencies. We observed strong differences in the convergence properties of the methods between the analyzed test functions.
On the complete aggregation of the Wigner-Lohe model for identical potentials
Authors: Ha Seung-Yeal , Hwang Gyuyoung , Kim Dohyun
Published: May 2022

We study the collective behaviors of the Wigner-Lohe (WL) model for quantum synchronization in phase space which corresponds to the phase description of the Schrödinger-Lohe (SL) model for quantum synchronization, and it can be formally derived from the SL model via the generalized Wigner transform. For this proposed model, we show that the WL model exhibits asymptotic aggregation estimates so that all the elements in the generalized Wigner distribution matrix tend to a common one. On the other hand, for the global unique solvability, we employ the fixed point argument together with the classical semigroup theory to derive the global unique solvability of mild and classical solutions depending on the regularity of initial data.
Milicias y sociedad a finales del siglo XVIII. El caso de Michoacán
Authors: Vega Josefa
Published: May 2022

Estudio de un sector del ejército colonial (las milicias) y su organización y mantenimiento en la intendencia de Valladolid de Michoacán. El trabajo se centra en el análisis de los dos sectores que integraron su oficialidad: militares profesionales, destinados a los regimientos provinciales con la misión de adiestrar a la tropa, y los oficiales milicianos, procedentes de las élites locales que, desde fecha temprana, logran el control de tales regimientos.
La epidemia americana de influenza en 1493
Authors: Guerra Francisco
Published: May 2022

Se fecha la primera epidemia hispanoamericana en 1493, calificada como gripe del cerdo. Esta epidemia de influenza suina antecede en bastantes años a la epidemia de viruela (1518). Estas conclusiones están sostenidas en base a testimonios coetáneos de Colón y de su médico Alvarez Chanca, y otros datos confirmatorios (Anglería, Fernández de Oviedo, Hernando Colón, Herrera).
Cuatro documentos colombinos
Authors: Arranz Márquez Luis
Published: May 2022

Cuatro documentos casi inéditos de Diego Colón apuntando nuevas noticias y confirmando otras, anteriormente sabidas por vías indirectas. El primero es de 1508 y sitúa a Diego Colón en Sevilla, a la vez que rechaza que una solución económica sería la mejor en su pleito con el Estado; el segundo es de 1511, donde Hernando Colón ofrece un proyecto, en nombre de su hermano, "para rodear el mundo". Los otros documentos son de 1512, y son cartas del segundo almirante al cardenal Cisneros dando noticias de La Española, entre ellas una "gran mortandad de romadizo". El primer documento (inédito) procede del Archivo Ducal de Alba, y los tres restantes se hallan en la New York Library.
Datos lingüísticos sobre la provincia de Cueva en la "Historia General y Natural de las Indias"
Authors: Enguita Utrilla José M.ª
Published: May 2022

Para apoyar sus descripciones el cronista Fernández de Oviedo acude a la incorporación de numerosas noticias lingüísticas. Así, para de tallar la gobernación de Castilla del Oro (libro XXIX, 34 capítulos) introduce veinticinco vocablos de la lengua cueva (de raíz chibcha). Se analizan todas y cada una de esas voces, algunas no comentadas en diccionarios de indoamericanismos.
Córdoba entre 1880 y 1914: factores que determinaron su transfomación urbana
Authors: Angueria María del Carmen
Published: May 2022

Se estudia, de forma detenida, la transformación urbana de la ciudad argentina de Córdoba, desde mediados del siglo XIX. Un auge demográfico, fuertes estímulos económicos y el ferrocarril motivan incrementos en las actividades comerciales (gran centro distribuidor de productos) e industriales, muy sostenidos por inversiones extranjeras, que producen sensibles modificaciones urbanas, estudiándose a lo largo de tres períodos: 1869-1888, 1888-1895 y 1895-1914.
Las panacas del Cuzco y la pintura incaica
Authors: Iwasaki Cauti Fernando
Published: May 2022

Según algunos cronistas, las panacas cuzqueñas o grupos de parentesco de descendencia real utilizaron, en tiempos prehispánicos, la pintura como medio de representación de sus genealogías y orígenes. Esta tradición la continuaron durante la colonia, según se puede inferir de determinados documentos, los descendientes de los incas como prueba en sus reclamaciones ante la corona española.
¿Expediciones científicas o ciencia en las expediciones? Tres ejemplos clarificadores
Authors: Guirao de Vierna Angel
Published: May 2022

Se propone un criterio de cientificidad de las expediciones, apoyado en un baremo de siete índices, donde se introducen elementos objetivos y subjetivos. Para ejemplificar la aplicación de este baremo, se eligen tres expediciones hidrográficas (Malaspina, Córdoba y Juan Pérez) que participan en grado diferente del mismo, y aclaran algunas dificultades en la aplicación rígida del criterio científico a las expediciones ilustradas.
El doctor Hernández, un viajero ilustrado del XVI
Authors: Alvarez Raquel
Published: May 2022

Se destaca el valor humanístico de Hernández, en contraste con la circunstancia histórica hispana de los 60 (carestía de presupuesto y de metales americanos, rebeliones americanas y europeas, mal conocimiento de los re­ cursos para establecer la política adecuada). Bajo este panorama, se interpreta la expedición de Hernández a México como un contraste entre las intenciones utilitarias oficiales y las científicas de Hernández.
Los relatos de viajeros como fuente histórica: Visión de Chile y Argentina en cinco viajeros ingleses (1817-35)
Authors: Estrada Turra Bartolomé
Published: May 2022

Se seleccionan cinco casos sobre los cuales ha recaído tradicionalmente una credibilidad como fuentes que el autor pone a prueba. Para ello procede distinguir situaciones personales y tempo-espaciales, así como un abanico de temas de información nacional (geografía, sociedad, economía y política) en los cuales la credibilidad a conceder es diferente.
Los prolegómenos de la visita de José de Gálvez a la Nueva España ( 1766). Don Francisco de Armona y la instrucción secreta del Marqués de Esquilache
Authors: Varela Marcos Jesús
Published: May 2022

Se pone de manifiesto la actuación del Marqués de Esquilache en Nueva España, donde quería operar con la misma •eficacia que lo estaba haciendo en España. La intención de vigilar los organismos ofiiciales novohispanos despertó recelos y, sin duda, será otro motivo que ayudará a la caída del italiano. Esta actuación política se aprecia perfectamente en la instrucción secreta que Esquilache dio a su emisario Francisco de Armona, documento cuya existencia se había negado reiteradamente y que el autor encuentra y reproduce en este trabajo.