bluuebunny/crossref_metadata_2025 huggingface dataset:
DIRECTIONS FOR IMPROVING THE METHOD OF LIMIT EQUILIBRIUM WHEN CALCULATING THE COMBINED STRUCTURE OF SLABS
Authors: Ivashenko Yu. , Sonin S. , Serebrennikova E. , Latysheva S.
Published: April 2024

The purpose of the study is to adapt the method of limit equilibrium for the calculation of a reinforced, low-density concrete monolithic slab structure using prefabricated low-density concrete blocks. A numerical study was conducted based on the use of combined slab models and theories of material deformation. As a result, we obtained data on the stress-strain state of the structure and compared them using various theories and models. It has been established that calculating the combined slab structure using a method based on the finite element method (FEM) makes it possible to account for the nonlinear properties of concrete and reinforced concrete, and also affects the distribution of bending moments and expansion forces between the cross beams. Based on the limit equilibrium method, recommendations have been developed for determining the distribution of bending moments along linear plastic hinges. The practical sig-nificance of the study is to identify the features of the stress-strain state and to establish the relationship between the calculation results and experimental data.
PRODUCTION AND SUPPLY OF WELDED TUBULAR PILES AND SHEET PILING UP TO 2520 MM IN DIAMETER FOR THE CONSTRUCTION OF MODERN HYDRAULIC PORT STRUCTURES ERECTED IN THE FAR NORTH AND ARCTIC REGIONS
Authors: Emelyanov A. , Nesterov G. , Yushin A. , Tkachuk M.
Published: April 2024

number of large hydraulic port structures (sea terminals) unparalleled in world practice are being con-structed on the territory of the Russian Federation. A distinctive feature of these objects is their location in the Far North and the Arctic. One of the most important elements of the structures of berths and shore fortifications of port hydraulic structures are piles and welded tubular sheet piling (pile products). This article examines the production and supply of pile products with a diameter of up to 2520 mm, a wall thickness of up to 40 mm and a length of up to 75000 mm; analyzes the requirements for products operating in complex topographic, geological, hydrological and climatic condi-tions; and notes the need to harmonize and update the federal regulatory documentation regulating technical require-ments for both pile products and the pipes used to manufacture them.
DERIVATION OF THE EQUATIONS OF REGULATION AND ANALYSIS OF THE HYDRAULIC MODES OF OPEN HEAT SUPPLY SYSTEMS WITHOUT FLOW REGULATORS AT THE SERVICE CONNECTION
Authors: Panferov S. , Panferov V.
Published: April 2024

Energy efficiency and improved quality are currently very relevant issues in the housing and communal sector. These can be addressed, first of all, by introducing automated control systems and implementing optimized algo-rithms for monitoring and regulating heating and heat supply processes in general. The task of studying the features of the hydraulic regime of open heat supply systems without flow controllers at subscriber inputs is considered. Since a significant number of heating networks are open, the ban on their operation was reversed by Federal Law No. 438-F3 of December 30, 2021. Existing literature on open heating networks was analyzed and summarized. The hydraulic re-gime of open heating networks is very complex; its characteristic features are not sufficiently detailed and not clearly explained in the literature. This introduces difficulties in improving the quality of operation of open networks and uni-versity educational programs. In this paper, a detailed derivation of the main relationships characterizing the hydraulic regime is provided, with the assumption that the analyzed heat network is configured according to S.A. Chistovich’s ho-rizontal track principle. This makes it possible to reduce the calculation of a real operating network to a calculation of the hydraulic regime of a single-loop equivalent heat network using Kirchhoff’s laws for hydraulic circuits, which, un-like electrical circuits, are always non-linear circuits. The obtained solutions for specific cases were analyzed; in partic-ular, the influence of the water intake on the heating mode of consumers was studied for various characteristics of the heat supply system and outdoor temperature. The aforementioned algorithms can be used both for the algorithmic sup-port of automated heat supply control systems and for educational purposes.
ENERGY-EFFICIENT SOLUTIONS IN THE IMPLEMENTATION OF PROJECT DECISIONS ON VENTILATION FOR THE ELECTROPLATING INDUSTRY
Authors: Nagornaya А. , Sorokina N. , Kuzmenko A.
Published: April 2024

Some of the most harmful industrial emissions are produced by the installations, reactors, galvanic baths, and loading machines used in electroplating. The objective of this research is to develop operational, efficient and cost-effective solutions to ensure the required microclimate in electroplating shops. Operational costs for two alternative design solutions for electroplating shop ventilation were calculated: two-sided on-board suction, and on-board suction with deflation. We found that local exhaust ventilation of the on-board blow-offs of electroplating baths (instead of standard double-side suction) is one of the most effective energy-saving solutions. By reducing the consumption of re-moved air, capital costs for equipment and materials and operating costs for thermal and electrical energy are reduced.
USING LAYER-BY-LAYER CONCRETE DEPOSITION TO CONTROL THE TEMPERATURE GRADIENT ALONG THE CROSS-SECTION OF MASSIVE STRUCTURES
Authors: Pikus G. , Mozgalev K. , Rusanov A. , Markelov A.
Published: April 2024

The paper considers a method for depositing concrete mixtures into massive structures, which provides a favorable thermo-stressed concrete state. The thermo-stressed state was assessed according to the temperature gradient arising during thermo-curing along the cross-section of a prismatic structure with a surface modulus of 3.1 m–1. The paper analyzes domestic and foreign literature on the maximum allowable values of the temperature gradient and recommends accounting for the influence of the structural reinforcement ratio on allowable temperature gradients along the reinforcement cross-section. It also discusses other means of achieving a favorable thermo-stressed state of concrete studied in previous works. The paper presents the unsatisfactory results of a computer simulation of temperature distribution without concrete mixture layering. These results show the necessity of using effective set retarding admixes to ensure concrete layering without the formation of construction joints. Layering the concrete distributes the heat release process over time and reduces its peak values due to a smaller amount of cement in each layer compared to continuous layering of the entire volume.
Europe in Literature
Authors: Franco Bernard
Published: April 2024

This article examines the origin of the idea of Europe and its identity in relation to literature. It attempts to show that, before being a cultural, economic or political reality, Europe was a literary concept, whose origins are closely linked to the literary theories of the Romantics, particularly the German Romantics. The links between the idea of Europe and literature also associate Europe with the birth of comparative literature. But at the same time, the notion of World Literature, even if it has a Eurocentric background in Goethe and his successors, calls for the poet to transcend Europe and become a citizen of the world.
A new look at the geodynamic development of the Ediacaran–early Cambrian forearc basalts of the Tannuola-Khamsara Island Arc (Central Asia, Russia): Conclusions from geological, geochemical, and Nd-isotope data
Authors: Mongush Andrey Alexandrovich , Olschewski Pascal
Published: April 2024

Oceanic igneous rocks throughout the Altai-Sayan Fold Belt (ASFB) in central-southern Siberia are often considered to be late Precambrian–early Paleozoic accreted elements of oceanic crust – often of uncertain paleogeographic or geodynamic origin. We explore the role of suprasubduction zone settings in the formation of different ASFB terranes. Our study offers a non-accretionary perspective on the tectonomagmatic development of basalt-bearing units in the ASFB on the example of the forearc terrane of the Ediacaran–early Cambrian Tannuola-Khamsara island arc (herein termed Sayan-Tuvan forearc zone). We describe the geochemistry, structural geology, and stratigraphic relations of basalts of the Aldynbulak, Uttug-Khaia, and Chingin formations, which are integral parts of the Sayan-Tuvan forearc zone. The Aldynbulak basalt samples mainly fall in the compositional fields of ocean island basalts and enriched mid-ocean ridge basalts (E-MORB) and likely derived from a deep mantle source. The Uttug-Khaia and Chingin basalts are N- and E + T-MORB-like basalts, carrying forearc geochemical signatures. Specifically, the Chingin Formation contains boninite dikes and is associated with a boninite-bearing ophiolite. Boninites are commonly associated with forearc magmatism and thus a forearc formation setting is likely. Tectonic and stratigraphic considerations imply that the Aldynbulak basalts formed first, followed by the Uttug-Khaia and later the Chingin basalts and boninites. A schematic model, involving decompression melting of the mantle, is proposed for the development of the studied forearc basalt suites that are linked with the growth of the Tannuola-Khamsara island arc system 580–540 million years ago.
Simulation of range code tracking loop for multipath mitigation in NavIC receiver
Authors: Rairala Naraiah Pedda , Perumalla NaveenKumar
Published: April 2024

The Operational Navigation with Indian Constellation (NavIC) comprises seven satellites in the orbit, including three in geostationary orbit (GEO) and four in geosynchronous orbit (GSO). NavIC provides both Standard Positioning Service and Restricted Service, using L5 (1176.45 MHz) and S1 (2492.028 MHz) frequencies, with coverage extending 1500 km around the mainland of India. In an urban canyon, multipath interference severely reduces the precision and reliability of NavIC positioning. Many current multipath mitigation techniques often exhibit high computational requirements or reliance on external assistance. In this paper, a ranging code tracking loop is proposed that can sustain either a late or early branch in contrast to the Narrow-Spacing (NS) correlation technique for mitigating multipath for NavIC receiver. The design of proposed code tracking loop is based on steepest descent algorithm. The findings demonstrate that, in terms of calculation time and code multipath mitigation, the suggested technique performs better than both Multipath Estimated Delay Locked Loop (MEDL) and NS correlation. The proposed method produces less than 0.016 chips for the tracking error Standard Deviation (STD). In addition, the recommended method takes 24 % less computation time.
Nonparametric estimation of conditional incremental effects
Authors: McClean Alec , Branson Zach , Kennedy Edward H.
Published: April 2024

Conditional effect estimation has great scientific and policy importance because interventions may impact subjects differently depending on their characteristics. Most research has focused on estimating the conditional average treatment effect (CATE). However, identification of the CATE requires that all subjects have a non-zero probability of receiving treatment, or positivity, which may be unrealistic in practice. Instead, we propose conditional effects based on incremental propensity score interventions, which are stochastic interventions where the odds of treatment are multiplied by some factor. These effects do not require positivity for identification and can be better suited for modeling scenarios in which people cannot be forced into treatment. We develop a projection approach and a flexible nonparametric estimator that can each estimate all the conditional effects we propose and derive model-agnostic error guarantees showing that both estimators satisfy a form of double robustness. Further, we propose a summary of treatment effect heterogeneity and a test for any effect heterogeneity based on the variance of a conditional derivative effect and derive a nonparametric estimator that also satisfies a form of double robustness. Finally, we demonstrate our estimators by analyzing the effect of intensive care unit admission on mortality using a dataset from the (SPOT)light study.
A typological approach to intersubjective uses of the Finnish clitic markers =hAn and =se from the perspectives of engagement and their interrelations with subject person
Authors: Yurayong Chingduang , Kittilä Seppo
Published: April 2024

The present study adopts a typological approach to investigate intersubjective uses of the Finnish clitic markers =hAn and =se, which are derived from third-person pronouns, within the emerging framework of engagement. The methods encompass two data gathering approaches: 1) a qualitative survey involving actual Finnish language users through a questionnaire to identify functions, and 2) a quantitative survey examining co-occurrences between the clitic markers and subject persons using the Suomi24 Sentences Corpus 2001–2020 for usage-based frequencies. The data analysis focuses on the interrelations with a subject person, drawing parallels with other languages which exhibit similar phenomena of pragmatic extension from referential uses towards engagement marking. The results reveal that the two Finnish clitics semantically inherit their referential meanings from their lexical forms and further extend them towards marking interlocutors’ intersubjectivity, enriching the engagement system of Finnish. A distinct difference related to the subject person becomes evident. On the one hand, =hAn as a recognitional marker more frequently co-occurs with first person, signalling the speaker’s involvement in epistemic management as a speech act participant responsible for managing inclusive attention and shared information with the hearer. On the other hand, =se as a contrastive marker co-occurs more frequently with third person in general and with second-person statements which involve the speaker’s observed information and its exclusivity.
Experimental investigation of the performances of thick CFRP, GFRP, and KFRP composite plates under ballistic impact
Authors: Heriana  , Jatmiko Fito Ezekiel Halor , Muhammad Fachri , Hadi Bambang Kismono , Gunawan Leonardo , Gunaryo
Published: April 2024

This study discusses the experimental results of the ballistic impact on thick-layered carbon fibre-reinforced polymer (CFRP), glass-based FRP (GFRP), and Kevlar-based FRP (KFRP) composite plates. Ten 10 mm plates of each type were manufactured via the hand lay-up and vacuum bagging techniques to produce plates with a thickness of 2 mm each, which were bonded together using epoxy adhesive and hot pressed at 75°C to obtain thick layered plates with a total thickness of 20 mm each. The specimen plates were tested according to the NIJ 0108.01 standard in a special firing room using a 9 mm G2 Elite handgun with a full metal jacketed round nose 9 mm × 19 mm Mu1-TJ bullets moving at a velocity of approximately 358 m/s. The results indicated that no total penetration occurred on any of the plates. The bullets were destroyed by impact, and the penetration depths of the CFRP, GFRP, and KFRP plates were 11.10, 9.95, and 22.22%, respectively. The layered structures in these plates appear to have changed the penetration behaviour compared with previous studies. In this study, delamination was the primary failure mode.
Single cocaine exposure attenuates the intrinsic excitability of CRH neurons in the ventral BNST via Sigma-1 receptors
Authors: Wu Jintao , Zhao Yue
Published: April 2024

The ventral bed nucleus of the stria terminalis (vBNST) plays a key role in cocaine addiction, especially relapse. However, the direct effects of cocaine on corticotropin-releasing hormone (CRH) neurons in the vBNST remain unclear. Here, we identify that cocaine exposure can remarkably attenuate the intrinsic excitability of CRH neurons in the vBNST in vitro. Accumulating studies reveal the crucial role of Sigma-1 receptors (Sig-1Rs) in modulating cocaine addiction. However, to the authors’ best knowledge no investigations have explored the role of Sig-1Rs in the vBNST, let alone CRH neurons. Given that cocaine acts as a type of Sig-1Rs agonist, and the dramatic role of Sig-1Rs played in intrinsic excitability of neurons as well as cocaine addiction, we employ BD1063 a canonical Sig-1Rs antagonist to block the effects of cocaine, and significantly recover the excitability of CRH neurons. Together, we suggest that cocaine exposure leads to the firing rate depression of CRH neurons in the vBNST via binding to Sig-1Rs.
The prevalence of molar pregnancy among patients with incomplete miscarriage at a maternity teaching hospital
Authors: Ali Zheen , Mohammed Parez
Published: April 2024

Background and objective: Gestational trophoblastic disease (GTD) involves a range of interrelated disorders that originate from the placenta; it can be benign or malignant. In the Kurdistan region of Iraq, data about GTD and its consequences is scarce. This study aims to identify the prevalence of GTD and its types among a cohort of Kurdish women. Methods: A cross-sectional study was conducted for a one-year duration from April 1, 2020, to April 1, 2021, at the Emergency Department of Maternity Teaching Hospital, Erbil City. Pregnant women in their first trimester and early second trimester (4–14 weeks of gestation) with vaginal bleeding, pregnant women with vaginal bleeding due to incomplete miscarriage, and pregnant women with a history of missed miscarriage were included in the study. A specialized questionnaire was prepared for the purpose of data collection. Results: Out of 380 incomplete miscarriage cases who were interviewed, fifty patients with gestational trophoblastic disease were included in the current study. The prevalence of GTD was 13.1%, and the majority of patients had a partial type of GTD. The current analysis indicated that there was a statistically significant association between the types of GTD, the personal history of molar pregnancy, and the age of participants. The analysis indicated that there is no statistical association between parity, blood group, and history of miscarriage and the type of GTD. Conclusion: The prevalence of GTD was remarkably high, and the partial type of GTD was the most common form present among the participants. The majority of the cases were diagnosed during the first trimester of the pregnancy. Complete GTD was more common among patients of advanced age.
Acute Neuropixels Recordings in the Marmoset Monkey
Authors: Dotson Nicholas M. , Davis Zachary W. , Jendritza Patrick , Reynolds John H.
Published: April 2024

High-density linear probes, such as Neuropixels, provide an unprecedented opportunity to understand how neural populations within specific laminar compartments contribute to behavior. Marmoset monkeys, unlike macaque monkeys, have a lissencephalic (smooth) cortex that enables recording perpendicular to the cortical surface, thus making them an ideal animal model for studying laminar computations. Here we present a method for acute Neuropixels recordings in the common marmoset (Callithrix jacchus). The approach replaces the native dura with an artificial silicon-based dura that grants visual access to the cortical surface, which is helpful in avoiding blood vessels, ensures perpendicular penetrations, and could be used in conjunction with optical imaging or optogenetic techniques. The chamber housing the artificial dura is simple to maintain with minimal risk of infection and could be combined with semichronic microdrives and wireless recording hardware. This technique enables repeated acute penetrations over a period of several months. With occasional removal of tissue growth on the pial surface, recordings can be performed for a year or more. The approach is fully compatible with Neuropixels probes, enabling the recording of hundreds of single neurons distributed throughout the cortical column.
Machine Learning for Predicting Intent of Radical Action in Text Data
Authors: Jurek-Loughrey Anna , Szabelska Anna
Published: April 2024

Many cases of radicalism, especially violent radicalism, manifest within the context of inter-ethnic conflict and war. Research in this domain has significantly contributed to our overarching comprehension of the issue. This form of radicalism is inherently linked to the dynamics of group affiliation. However, our focus here is directed towards the individual motivation driving radical actions. While radical actions may encompass dynamics of group affiliation (e.g., the most radical pro-life activists being members of the Army of God), they also possess a substantial individual component. For instance, numerous attacks on abortion doctors or clinics are categorized as ’lone-wolf terrorism’.

In this study, we sought to examine whether state-of-the-art Machine Learning tech- nology for text analysis could effectively discern the intent behind radical actions from user-generated content. We analyzed a diverse array of radical texts published online by various activists, including anarchists, Iranian guerrilla members, Indian revolution- aries, activists from the US civil rights movement, and The Army of God. Our analysis reveals that Machine Learning models can successfully identify potential signals indica- tive of the author’s intent behind radical actions.
The Danish investigation on iodine intake and thyroid disease (DanThyr): history and implications
Authors: Tang Møllehave Line , Knudsen Nils , Linneberg Allan , Bülow Pedersen Inge , Ravn-Haren Gitte , Madsen Anja Lykke , Carlé Allan , Cerqueira Charlotte , Krejbjerg Anne , Rasmussen Lone Banke , Ovesen Lars , Perrild Hans , Sigurd Lena Bjergved , Thuesen Betina Heinsbæk , Vejbjerg Pernille , Jørgensen Torben
Published: April 2024

Due to mild-to-moderate iodine deficiency in Denmark, health authorities initiated a voluntary iodine fortification (IF) program in 1998, which became mandatory in 2000. In line with recommendations from the World Health Organization, the Danish investigation on iodine intake and thyroid disease (DanThyr) was established to monitor the effect on thyroid health and disease. The program involved different study designs and followed two Danish sub-populations in the years before IF and up till 20 years after. Results showed that the IF was successfully implemented and increased the level of iodine intake from mild–moderate iodine deficiency to low adequacy. The level of thyroglobulin and thyroid volume decreased following IF, and there was an indication of fewer thyroid nodules. The incidence of hyperthyroidism increased transiently following IF but subsequently decreased below the pre-fortification level. Conversely, thyroid-stimulating hormone levels and the prevalence of thyroid autoimmunity increased along with an increase in the incidence of hypothyroidism. These trends were mirrored in the trends in treatments for thyroid disease. Most differences in thyroid health and disease between regions with different iodine intake levels before IF attenuated. This review illustrates the importance of a monitoring program to detect both beneficial and adverse effects and exemplifies how a monitoring program can be conducted when a nationwide health promotion program – as IF – is initiated.
Las etimologías latinas en la 12.ª edición (1884) del Diccionario de la lengua castellana de la Real Academia Española
Authors: Jiménez Ríos Enrique
Published: April 2024

El artículo examina las etimologías latinas de la duodécima edición del Diccionario de la Academia, de 1884. La recuperación de esta información en este momento y el influjo de la lingüística histórica en el conocimiento de la diacronía de las lenguas determinan que la atención se fije en esta edición y en este tipo de etimologías. Se clasifican y describen las etimologías latinas y se presentan las observaciones de autores contemporáneos del diccionario. Estos comentarios y la nueva metodología historicista influyen en el tratamiento de las etimologías, con cambios en esta edición y en las siguientes, y con el abandono de restos del pasado, correspondencias y equivalencias latinas.
Containing an epidemic in the case of running out of treatment: A switched system approach
Authors: Salwahan Shraddha , Abbas Syed , Tridane Abdessamad
Published: April 2024

In this paper, we discuss an epidemic switched system. A susceptible–infected–treated model is considered. The course of an epidemic is profoundly influenced by the allocation of resources. If these resources are limited, then we need to devise an optimal distribution strategy. One significant case to study is when the drug supply is insufficient. We study a control problem that minimizes the total outbreak size of the epidemic and optimizes the rate of vaccination/isolation control by minimizing the suitable functional subject to resource constraints. In the end, simulations are performed for illustrations.
Sumanaus valdymo teoriniai modeliai: taikymas vietos savivaldos analizei
Authors: Martinaitis Tomas
Published: April 2024

This article presents the theoretical model of smart governance in local government. It discusses academical discurse of theme and problems related with the fragmentation and over elaborative concentration to technologies of topic. Article analysis the complexity of the term smart and what does smart social system means. It also covers the complexity of the concept smart governance together with its dimensions and posibilities to aquire them to research smart governance in local government. This allows better to understand the term smart governance. Afterwards, a critical view towards national smart governance model is presented and new theoretical framework for research of smart local governance together with its dimensions and attributes in academical discurse are presented. It enables the research smart local governance in Lithuania and abroad.
Ar terminai „kūrybinė apskaita“ ir / ar „pelno valdymas“ tinkami įvardyti manipuliacijų apskaitos informacija reiškinį?
Authors: Bachtijeva Diana , Tamulevičienė Daiva
Published: April 2024

The paper examines the essence of the phenomenon of manipulation of accounting information and the appropriateness of the terms “creative accounting” and “earnings management” to refer to it, and whether terms contribute to the misperception of this phenomenon. The aim of the study is to evaluate the impact of the terms “creative accounting” and “earnings management” used in the Lithuanian scientific and professional literature on the perception of the phenomenon of manipulations of accounting information. The study was carried out using an expert evaluation method. The results showed that the phenomenon of manipulations of accounting information was perceived by the experts as having a negative impact on accounting and accounting outcomes. However, when evaluating the terms used to describe this phenomenon, the experts pointed out that they have positive connotations. As the terms do not reflect the essence of the phenomenon being assessed, it is proposed to discontinue the use of these terms. Experts consider that the most appropriate term for this type of manipulations is “manipulative accounting”.
All Around Me
Authors: Wonneberger Astrid , Lauenburg Tania
Published: April 2024

Dieser Beitrag stellt das Projekt „All Around Me“ vor, ein innovatives künstlerisches Ausstellungsformat, das von der Künstlerin Tania Lauenburg gemeinsam mit dem Regisseur Evgeni Mestetschkin geleitet und von August bis Dezember 2019 in einer 2. Klasse einer Grundschule im Hamburger Bezirk Eimsbüttel durchgeführt wurde. Das Projekt hatte zum Ziel, in einem schulischen Setting, das durch eine Vielfalt sprachlicher und kultureller Hintergründe geprägt ist, Schüler*innen mit und ohne Migrationshintergrund anzuleiten, als Forscher*innen und Ausstellungsmacher*innen ihre eigene Familiengeschichte und -kultur zu untersuchen, zu reflektieren und in einem Ausstellungsformat einem breiteren Publikum zu präsentieren. Ergebnisse der Begleitforschung deuten darauf hin, dass dieses Format gute Möglichkeiten bietet, eine Zugangsmöglichkeit zu interkulturellem Verstehen zu bieten sowie interkulturelle und andere Kompetenzen der beteiligten Schüler*innen zu fördern.
Postmigrantische Perspektiven auf Familien
Authors: Zimmer Nora
Published: April 2024

Nora Zimmer berichtet über die Abschlusstagung des Forschungsprojekts "Postmigrantische Familienkulturen", die vom 28.02. bis zum 01.03.2022 online an der HAW Hamburg (Department Soziale Arbeit) stattfand.
Perspektivisch ein großer Sprung
Authors: Eggenhofer Nina
Published: April 2024

Nina Eggenhofer berichtet über die Abschlusstagung des Forschungsprojekts "Postmigrantische Familienkulturen", die vom 28.02. bis zum 01.03.2022 online an der HAW Hamburg (Department Soziale Arbeit) stattfand.
Extremer sozialer Rückzug junger Menschen in ihre Familien
Authors: Stelzig Sabina , Weidtmann Katja
Published: April 2024

Kurzvorstellung eines interdisziplinären aktuellen Forschungsprojekts an der HAW Hamburg, das darauf abzielt zu erforschen, inwiefern das aus Japan stammende Konzept des „Hikikomori“ mit seinen Ansätzen der Ent-Psychiatrisierung und interprofessionellen Hilfen dazu genutzt werden kann, das Verständnis von und den Umgang mit einem extremen sozialen Rückzug von jungen Erwachsenen in ihre Familien in Deutschland zu verbessern.
Fragen zu ‚Identität‘ und postmigrantischem Alltag
Authors: Bührig Kristin , Mittag Romy
Published: April 2024

In welcher Relation stehen im Zuge der gegenwärtigen Diskussion des 'Postmigrantischen' der Begriff bzw. Phänomene der Identität? Wie ist die Bedeutung von 'Identität' im Alltag mit wissenschaftlichen Zugriffen und einer Operationalisierung von 'Identität' in Beziehung zu setzen? Zu diesen Fragen versucht der Artikel anhand exemplarischer Analysen ausgewählter Ausschnitte eines biographischen Interviews einen Beitrag zu leisten. Dabei wird im Rahmen einer rekonstruktiven, gesprächsanalytischen Vorgehensweise untersucht, in welchen Gesprächszusammenhängen Fragen der 'Identität' zur Sprache kommen. Unter Rückgriff auf die Kategorie 'Zugehörigkeit' werden sodann Prozesse der Selbst- und Fremdzuschreibung von 'Identität' analysiert.
Zum Wohle der Mieter*innen
Authors: Lölsdorf Diana
Published: April 2024

Der Beitrag befasst sich anhand des Beispiels der Lenzsiedlung in Hamburg mit der Frage, wie die Zusammenarbeit zwischen Institutionen der sozialen Arbeit und Wohnungsunternehmen im Sinne einer höheren Zufriedenheit der Bewohner*innen des Quartiers gestaltet werden kann. Als Datengrundlage dient vielfältiges Datenmaterial, das im Rahmen eines vierjährigen Forschungsprojektes erhoben wurde, u.a. leitfadengestützte Interviews mit Bewohner*innen und Mitarbeiter*innen der Sozialen Arbeit sowie der Wohnungsunternehmen, eine Literaturrecherche zur öffentlich geförderten Stadtteilentwicklung in der Lenzsiedlung sowie eine Bedarfsanalyse der Bewohner*innen, die im Auftrag des zuständigen Bezirksamtes durchgeführt wurde.
Nach einem Überblick über die Geschichte der Lenzsiedlung und die Zusammenarbeit zwischen den Akteuren aus der Sozialen Arbeit und der Wohnungswirtschaft, beleuchtet der Beitrag das Sozialmanagement als Instrument von Wohnungsunternehmen sowie die konkret von den Bewohner*innen benannten Problematiken, wie klassische Mietprobleme (schlechte Erreichbarkeit von Mitarbeiter*innen der Wohnungsunternehmen oder Zustand der Anlage) aber auch Probleme den sozialen Zusammenhalt betreffend. Abschließend wird ein Ausblick auf Möglichkeiten der weiteren Zusammenarbeit im Sinne der Bewohner*innen gegeben.
Impact of farming structure on intensity of wild birds accidents
Authors: Lazarova I. , Balieva G. , Dimitrova S.
Published: April 2024

Abstract. The living environment of progressively increasing population worldwide is significantly encroaching on and occupying areas of wild nature. At the marginal zones where human activity and environment meet, biodiversity is subjected to the effects of agriculture and its modern intensification. The grasslands within human settlements serve as intersections where farm animals and wildlife meet and interact, sometimes directly competing for resources. One aspect of this interaction involves active management of encounters between wild and domestic animals in order to control animal health at both individual and herd levels, aiming to minimize economic losses and maximize productivity and sustainability of livestock production. On the other hand, wild animals are also directly and indirectly influenced by the type of animal husbandry practices developed in each region, often with adverse consequences for wildlife. Human-wildlife conflict is among the most urgent and well-researched issues for the creation and implementation of effective wildlife conservation measures worldwide. However, systematic knowledge of these conflicts remains insufficient. In order to explore the spatial overlap between livestock and wildlife leading to conflicts between them, this study aims to assess the incidence of wildlife poisoning cases and their relation to changes in the type of livestock farming by economic planning regions in the country. For this study, we analyzed variations in the number of farm animals raised in specific regions from 2000 to 2019, and the trends in structural changes of registered livestock facilities in Bulgaria. We examined the influence of the structure of livestock holdings and the intensification of animal husbandry on the rate of patient admissions to the “Green Balkans” Wildlife Rehabilitation and Breeding Centre in Stara Zagora.
Effect of application of foliar herbicides on the productivity and physical parameters of triticale cultivars (xTriticosecale Wittm.)
Authors: Petrova Z. , Stoyanov H.
Published: April 2024

Abstract. The aim of this research was to determine the effect of application of herbicides on productivity and physical parameters of triticale cultivars. The research was carried out in 2018 –2021 at Dobrudzha Agricultural Institute, General Toshevo (DAI). The following herbicides were used: Ergon WG (50 g/ha), Starane Gold (1800 ml/ha), Biatlon 4D+Desh (50 g/ha+500 ml/ha) and Korelo Duo+Das Oil (260.5 g/ha +500 ml/ha) from the group of sulfunylureas with various mechanisms of action. The preparations were applied at stage 29 and 37 (according to Zadoks) of three triticale cultivars, Akord, Kolorit and Dobrudzhanets. The herbicide effect was determined by the quantitative weight method and evaluated by the EWRS scale. The parameters were the following: productivity (ha), weight of 1000 grains (g) and hectoliter (kg). Four-factor dispersion analysis was applied. The factors considered were year conditions, cultivar, herbicide and stage of treatment. The factors with the highest strength of effect were the year conditions (60%) and the used cultivar (31%). Significantly lower was the effect of the factors stage of treatment (5%) and applied herbicide (4%).
Effect of crop rotation on nitrogen leaching with the lysimetric waters in vulnerable areas
Authors: Simeonova Ts. , Nenova L. , Benkova M. , Nenov M.
Published: April 2024

Abstract. Climate change is known to subject the functioning of agroecosystems to high levels of biotic and abiotic stress and has a significant impact on agricultural production worldwide. Crop rotation is believed to be one way of adapting agriculture to climate change compared to monoculture This study aimed to examine the maize-wheat rotation impact on soil nitrogen dynamics and leaching losses. A study has been carried out on the experimental field of Tsalapitsa, Plovdiv region on Fluvisol. In this maize-wheat rotation experiment, we compared three fertilization treatments with increasing nitrogen and phosphorus rates to a control with no fertilization. In 2020, grain maize (Zea mays L.) FAO group 310, was grown with fertilizer rates (T0N0P0; T1N120P80; T2N160P120; T3N200P160). In the period 2020/2021, wheat, (Triticum aestivum L.), was grown with the following fertilizer variants – (Т0 N0P0; Т1N100P60; Т2 N140P100; Т3 N180P140). The field plots were equipped with modification of Ebermayer type of lysimeters, which collect water from 100 cm depth of soil profile. The volume of lysimetric waters was calculated, the nitrogen content and its leaching were analyzed.
The study found that the lysimetric water volume after maize cultivation was 75.95 liters per square meter, approximately 2.5 to 3 times higher than that observed after wheat cultivation. Nitrogen content varied with fertilization rates, ranging from 10.8 to 37.5 mg/L for maize and 8.73 to 23.58 mg/L for wheat. The losses of the element with drainage runoff with the first crop were – 5.6-28.5 kg.ha-1, and with wheat – 1.2-6.3 kg.ha-1, respectively. It was established that when cereal crops were grown the losses of nitrate nitrogen out of the root zone were significantly reduced.
Slip modes modeling of electric vehicle asynchronous electric drive
Authors: Senchenko S.O. , Vorobiov B.V. , Kyrylenko Y.O. , Likhno Y.V. , Khan Liu
Published: April 2024

Purpose. Creation a computer model of electric drive of an electric vehicle with the possibility of modeling in slippage modes, as well as the subsequent determination of slippage detection method as early as possible to further reducing or preventing slippage.
Methodology. Mathematical analysis and modeling.
Findings. Mathematical models in the structural form of the control system, power converter and motor are added in a simplified way, as the blocks. For compiling a computer model, the blocks of the control system and the power converter will be assembled using models of elements of power electric circuits. The model allows the ED simulation with a huge number of parameters varying – modeling slipping processes with one or two wheels, a sharp change in engine parameters, failure of one of the components of the power circuit, etc. Using the Simulink and SimPower packages of the Matlab software package, as well as the block diagram of the electric drive, a computer model of the ED was synthesized. Computer simulation of dynamic processes in the electric drive during a collision, as well as pulling away on the road surface with a reduced coefficient of friction, was carried out. The obtained diagrams fully correspond to the real physical processes occurring in the electric vehicle and give reason to believe that the constructed mathematical and computer models are adequate. Proceeding from this, electromechanical transients in the electric drive during acceleration with slipping and one wheel runover a road surface with reduced traction were obtained and analyzed. As a result of this analysis, the most optimal and reliable way to determine the skidding mode for its further elimination was determined.
Originality.  Computer model of the asynchronous electric drive of an electric vehicle with a detailed mechanical part, taking into account the mechanical differential gear, was built. The model allows the ED simulation with a huge number of parameters varying – modeling slipping processes with one or two wheels, a sharp change in engine parameters, failure of one of the components of the power circuit, etc.
Practical value.  Computer simulation was carried out for two modes: start of electric vehicle movement , when one of the wheels has been of on the road surface with a reduced coefficient of adhesion (0,1) since launch and acceleration with a collision with a surface with a reduced coefficient of adhesion (0,1) with one wheel at the moment of time of 6.3 s.
Development of a versatile lidar system based on passively Q-switched Nd: YAG laser for monitoring aerosols and cirrus clouds in	the atmosphere
Authors: Bui Hai Van , Dinh Trung Van , Nguyen Bao Thi Thanh , Vu Oanh Thi Kim , Nguyen Tu Xuan , Phung Tiep Viet , Nguyen Van Thi Khanh , Pham Bang Dong , Pham Tien Minh , Nguyen Thieu Van , Hoang Thanh Van , Nguyen Dien Tran , Phung Bao Anh
Published: April 2024

Mobile lidar systems are important for sampling and monitoring over wide separated locations. In this paper, we present an in-house developed flexible and portable lidar system integrating an inexpensive passively Q-switched laser Nd:YAG and a detection module working in both analog and photon counting mode for studying the atmospheric boundary layer (BL) and cirrus clouds (CC). We developed a passively q-switched Nd:YAG pulsed laser operating at a wavelength of 532 nm with pulse energy up to 200 mJ and repetition rate of 1 Hz - 15 Hz. Our lidar system is designed to provide multi-angle lidar measurements up to 25 km. The multi-angle capability allows direct determination of the overlap function to characterize the lidar system by measuring the horizontal lidar signal. We use our lidar system to monitor the boundary layer and cirrus clouds over several locations Hanoi, Quangbinh, Danang, and Ho-Chi-Minh city. From the measurements, we derive the main properties such as the height, thickness, and optical depth of the earth’s surface aerosol layer and cirrus clouds. We demonstrate that this versatile compact and inexpensive lidar system is very useful for aerosol research and the study of high cirrus clouds.
THE NO TRAIN NO GAIN SYSTEM FOR O-COCOSDA AND VLSP 2022 - A-MSV SHARED TASK: ASIAN MULTILINGUAL SPEAKER VERIFICATION
Authors: Ly Nhat-Nam , Nguyen Ngoc-Dung , Le Trong-Khanh
Published: April 2024

This paper proposes a semi-supervised multilingual speaker verification (MSV) system submitted for the 2 tasks, MSV for the Asian language inside the training set (T01) and outside the training set (T02) in O-COCOSDA and VLSP challenge 2022.To solve the problem, our strategy is training a baseline acoustic model with given labeled data (MSV CommonVoice) andfine-tuning the trained acoustic model with both given labeled data and given unlabeled data (MSV Youtube). To achieve the fine-tuning step, the unlabeled data is converted to labeled data by pseudo labeling technique using the clustering method with the embedding vectors extracted from the trained acoustic model. Besides, we also apply test-time augmentation, back-end scoring, and score normalization with the AS-Norm technique to improve the result. When evaluated on the VLSP 2022 challenge's given test set, our best system with baseline ECAPA-TDNN achieves an equal error rate (EER) of 2.296% in T01 and 3.3296% in T02, which ranks second rank in both two tasks.
50 YEARS FIELD ORIENTED CONTROL OF THREE-PHASE AC DRIVES IN THE PRACTICE - THE STATE OF THE ART
Authors: Quang Nguyen Phung
Published: April 2024

From DC motors (DCM) we know, it is possible to independently control the two currents of the flux and torque generating. Because the two DCM circuits are completely isolated, we obtain simple adjustment algorithms that require little computing time on the microprocessor. For this reason, DCM has been at the forefront of the application of digital controls in drive control systems in the early years, especially in high-performance systems. On the contrary, the three-phase AC motor (ACM) has a complex structure due to the winding system and three-phase power supply, and has caused significant difficulties in the mathematical description of the above decoupling characteristics. The purpose of the field-oriented control (FOC) is therefore to create a tool that allows the decoupling control of the flux and torque-producing current components from the three-phase AC currents flowing in the coil. The FOC drive system is a system based on the principle of decoupling the above power components thanks to the stator current feedback control (the innermost circuit of the drive system). The FOC-type control method belongs to the class of vector control methods for electrical machines. 
 
On the occasion of the 50th anniversary of FOC, this paper aims to provide an overview of the development status of FOC in industrial practice. The content presented deals mainly with 3-phase induction motors.
ESTIMATING AMINO ACID SUBSTITUTION MODELS AND ROOTING BACTERIAL TREES
Authors: Dang Cuong Cao , Vinh Le Sy
Published: April 2024

Reconstructing phylogenetic trees from protein sequences normally requires empirical amino acid substitution models to calculate the likelihood of trees or genetic distances between species. The tree of life is classified into three domains of Eukaryotes, Archaea, and Bacteria. The amino acid substitution models have been intensively studied for decades, but few are related to Bacteria. Rooting bacterial trees remains a challenging problem in the phylogenetic analysis due to the long branch separating Bacteria and other domains. The two main objectives of this paper are estimating amino acid substitution models Q.bac and NQ.bac for bacterial evolutionary studies and assessing the capability of the time non-reversible model NQ.bac in rooting bacterial trees. Experiments showed that both the time-reversible model (Q.bac) and the time-non-reversible model (NQ.bac) were significantly better than the existing models in analyzing bacterial protein sequences. Interestingly, the time non-reversible model NQ.bac helped reconstruct maximum likelihood bacterial trees with reliable roots for 177 (23.7\%) out of 748 testing alignments without requiring predefined outgroups. This outgroup-free rooting method enhances the studies of bacterial evolution. We recommend researchers employ both Q.bac and NQ.bac models in analyzing bacterial protein sequences. The datasets and scripts used in this manuscript are available at https://doi.org/10.6084/m9.figshare.20457264.
Serum biomarkers in patients with psoriasis and coronary artery disease and their impact on hospitalization: data form a prospective, 4-year, single-center, uncontrolled study
Authors: Amineva A. M. , Lakman I. A. , Badykova E. A. , Rakhimova R. F. , Dozhdev S. S. , Popov D. V. , Khismatullina Z. R. , Zagidullin N. Sh.
Published: April 2024

Aim. To study serum biomarker profile in patients with coronary artery disease (CAD) and psoriasis and the impact on the incidence of hospitalization for cardiovascular reasons and psoriasis.

Material and methods. The study included 90 patients divided into following 3 groups: with psoriasis (n=30), coronary artery disease (CAD) (n=30) and CAD+psoriasis (n=30) in whom serum biomarkers were determined at the beginning of the study (growth stimulation expressed gene 2, N-terminal pro-brain natriuretic peptide (NT-proBNP), interleukin-17 and tumor necrosis factor alpha) and hospitalization rates were monitored over 4 years.

Results. There was a significant difference in the concentrations of all biomarkers between the groups (p<0,05), with the maximum values being in the CAD+psoriasis group, except for NT-proBNP. In regression analysis, risk factors for cardiovascular hospitalizations were psoriasis (p=0,049) and increased NT-proBNP concentrations (p<0,001).

Conclusion. Comorbidity leads to an increase in the serum concentration of biomarkers, while the risk factors for cardiovascular hospitalization were psoriasis and serum NT-proBNP level.
In memory of Andrei A. Vlasov
Authors: Shperling M. I. , Salikova S. P.
Published: April 2024

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