bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of Force-Controlled Polishing of Complex Curved PMMA Parts on a Machining Center
Authors: Meng Xiangran , Wang Yingpeng , Yin Xiaolong , Fu Haoyu , Sun Shuoxue , Sun Yuwen
Published: April 2024

During the polishing process of complex curved PMMA parts, the polishing force is an important factor affecting the surface quality and optical performance. In this paper, a force-controlled polishing device integrated into a machining center to maintain the polishing force is investigated. In order to achieve the real-time active control of the polishing force, the linear voice coil motor and force sensors are used for motion and measurement. A compact structure was designed to couple the linear motion of the voice coil motor with the rotation for polishing. The force-controlled polishing system with a high real-time hardware architecture was developed to perform complex curved polishing path movement with precise force control. Next, the polishing force between the device and the workpiece was analyzed to obtain the mathematical model of the device. Considering the impact during the approaching phase of polishing, a fuzzy PI controller was proposed to reduce the overshoot and response time. To implement the control method, the controller model was established on Simulink and the control system was developed based on TwinCAT 3 software with real-time computing capability. Finally, a polishing experiment involving a complex curved PMMA part was conducted by a force-controlled polishing device integrated into a five-axis machining center. The results show that the device can effectively maintain the polishing force to improve surface quality and optical performance.
Investigation of Viscoelastic-Plastic Properties of Fresh Cemented Gangue Fly Ash Backfill Slurries
Authors: Hao Yuxin , Song Xuepeng , Wang Chengshuai , Fan Bowen , Yang Kai
Published: April 2024

In underground filling mining, freshly prepared cemented gangue-fly ash backfill (CGFB) slurries are typically piped into the gobs. The rheological properties of backfill slurry during pipeline transportation have a direct impact on the transportation characteristics, which in turn affect pipeline blockage and wear. In this paper, the rheological behavior and viscoelastic-plastic properties of CGFB during pipeline transportation are investigated. The effects of different solid content and cement content on resistivity were tested experimentally, and their viscoelasticity and plasticity were analyzed. The results show that with the increase in solid phase content and cement content, the viscosity, yield stress, and energy storage modulus of the materials showed an increasing trend. The viscosity and yield stress of the material both increased, reaching 32.77% and 51.22%, respectively. It was found by the dynamic shear test that in the low-strain region, the material showed a more significant elastic nature of the solid, while in the high-strain region, the viscosity of the material gradually increased. Cement has a substantially lower resistivity than fly ash and gangue, and with the increase in solid concentration, the resistivity of the material shows an increasing trend. With the increase in cement content, the resistivity generally shows a decreasing trend, but it should be noted that the resistivity change trend may tend to stabilize after the cement content exceeds 12%. The study’s findings can aid in understanding the rheological properties of CGFB and its viscoelastic-plastic behavior during the underground filling and conveying process, which can provide a reference basis for research and application in related fields.
Electrochemical Deposition and Etching of Quasi-Two-Dimensional Periodic Membrane Structure
Authors: Yao Binbin , Xu Yongsheng , Lou Benzhuo , Fan Yinbo , Wang Erwei
Published: April 2024

In this paper, two experimental procedures are reported, namely electro-deposition in the ultrathin liquid layer and chemical micro-etching. Firstly, a large area quasi-two-dimensional periodic membrane with adjustable density is deposited on a Si substrate driven by half-sinusoidal voltage, which is composed of raised ridges and a membrane between the ridges. The smaller the voltage frequency is, the larger the ridge distance is. The height of a raised ridge changes synchronously with the amplitude. The grain density distribution of membrane and raised ridge is uneven; the two structures change alternately, which is closely related to the change of growth voltage and copper ion concentration during deposition. The structural characteristics of membrane provide favorable conditions for micro-etching; stable etching speed and microscope real-time monitoring are the keys to achieve accurate etching. In the chemical micro-etching process, the membrane between ridges is removed, retaining the raised ridges, thus a large scale ordered micro-nano wires array with lateral growth was obtained. This method is simple and controllable, can be applied to a variety of substrates, and is the best choice for designing and preparing new functional materials. This experiment provides a basis for the extension of this method.
An Innovative Methodology to Characterize, at the Molecular Scale, Interactions in Polysaccharide Aqueous Solutions
Authors: Cordinier Alexandre , Petukhov Igor , Hucher Nicolas , Grisel Michel
Published: April 2024

Characterizing molecular interactions at the microscopic level remains difficult and, therefore, represents a key target to better understand macromolecule and biomacromolecule behaviors in solution, alone, or in mixtures with others. Therefore, accurate characterization in liquid media, especially in aqueous solutions, without causing any perturbation of the system in which they are studied, is quite difficult. To this purpose, the present paper describes an innovative methodology based on fluorescence spectrophotometry. Two molecular fluorescent probes, namely 8-anilino-1-naphtalenesulfonic acid (ANS) and 2-benzofuryl-3-hydroxy-4(1H)-quinolone (3HQ-Bf), were selected to characterize, respectively, the dipole-dipole interactions and hydrophobic micro-domains, for the first one, and hydrogen bonding, for the second. As a support to study molecular interactions, xanthan, galactomannan, and corresponding mixtures of these substances which are well known to exhibit a synergy of interactions in well-defined mixture conditions were chosen. Once the methodology was set up, the existence of the three types of interactions in these systems was demonstrated, thus allowing the elucidation of the mechanisms of interactions at the molecular scale.
Diastereoselective Three-Component 1,3-Dipolar Cycloaddition to Access Functionalized β-Tetrahydrocarboline- and Tetrahydroisoquinoline-Fused Spirooxindoles
Authors: Wang Yongchao , Chen Yu , Duan Shengli , Cao Yiyang , Sun Wenjin , Zhang Mei , Zhao Delin , Hu Donghua , Dong Jianwei
Published: April 2024

A chemselective catalyst-free three-component 1,3-dipolar cycloaddition has been described. The unique polycyclic THPI and THIQs were creatively employed as dipolarophiles, which led to the formation of functionalized β-tetrahydrocarboline- and tetrahydroisoquinoline-fused spirooxindoles in 60–94% of yields with excellent diastereoselectivities (10: 1−>99: 1 dr). This reaction not only realizes a concise THPI- or THIQs-based 1,3-dipolar cycloaddition, but also provides a practical strategy for the construction of two distinctive spirooxindole skeletons.
A Micro-Mach–Zehnder Interferometer Temperature Sensing Design Based on a Single Mode–Coreless–Multimode–Coreless–Single Mode Fiber Cascaded Structure
Authors: Yang Qing , Tian Jing , Hu Xiao , Tian Jiajun , He Qiqi
Published: April 2024

In this paper, a temperature sensing scheme with a miniature MZI structure based on the principle of inter-mode interference is proposed. The sensing structure mainly comprises single mode–coreless–multimode–coreless–single mode fibers (SCMCSs), which have been welded together, with different core diameters. The light beam has been expanded after passing through the coreless optical fiber and is then coupled into a multimode optical fiber. Due to the light passing through the cladding and core mode of the multimode optical fiber with different optical paths, a Mach–Zehnder interferometer is formed. Moreover, due to the thermo-optic and thermal expansion effects of optical fibers, the inter-mode interference spectrum of a multimode fiber shifts when the external temperature changes. Through theoretical analysis, it is found that the change in the length of the sensing fiber during temperature detection has less of an effect on the sensitivity of the sensing structure. During the experiment, temperature changes between 20 and 100 °C are measured at sensing fiber lengths of 1.5 cm, 2.0 cm, 2.5 cm, 3.0 cm, 3.5 cm, and 4.0 cm, respectively, and the corresponding sensitivities are 65.98 pm/°C, 72.70 pm/°C, 67.75 pm/°C, 66.63 pm/°C, 74.80 pm/°C, and 72.07 pm/°C, respectively. All the corresponding correlation coefficients are above 0.9965. The experimental results indicate that in the case of a significant change in the length of the sensing fiber, the sensitivity of the sensing structure changes slightly, which is consistent with the theory that the temperature sensitivity is minimally affected by a change in the length of the sensing fiber. Therefore, the effect of the length on sensitivity in a cascade-based fiber structure is well solved. The sensing scheme has an extensive detection range, small size, good linearity, simple structure, low cost, and high sensitivity. It has a good development prospect in some detection-related application fields.
High-Efficiency Dynamic Three-Dimensional Topography Measurement Using the Phase Shift Generation Method
Authors: Deng Qinyuan , Liu Yangyi , Zhu Fashi , Hou Jie , Xiong Fei , Zhang Yan
Published: April 2024

In the fringe projection profilometry (FPP), the traditional phase-shifting (TPS) algorithm and the Fourier transform (FT) algorithm are beset with a conundrum where measurement efficiency and conflicts with measurement accuracy, thereby limiting their application in dynamic three-dimensional (3D) measurements. Here, we propose a phase shift generation (PSG) method, which acquires the sinusoidal fringes by sparse sampling and reconstructs the complete phase-shifting sequence by generating the missing fringes with superimposed coupling of adjacent fringes. According to our proposed PSG method in which the sinusoidal fringe sequence size is about half of the TPS method, meaning that the PSG method will be timesaving in the phase-shifting sequence sampling process. Moreover, because of the utilization of multiframe fringes, our PSG method allows for a more accurate measurement than the FT method. Both simulation and experimental results demonstrate that our proposed PSG method can well balance the measurement accuracy and efficiency with a lower sampling rate, bearing a great potential to be applied in both scientific and industrial areas.
The Spiritual Prodigy, the Reluctant Guru, and the Saint: Mirabai and Collaborative Leadership at Hari Krishna Mandir
Authors: Martin Nancy M.
Published: April 2024

This article explores the life and influence of Indira Devi Niloy (1920–1997) who in 1949 began to encounter the sixteenth-century saint–poet Mirabai during her meditative trance states. She would recount songs, stories, and teachings that the saint gave to her as well as scenes from Mirabai’s life that she witnessed as an observer and at other times experienced directly as a participant. Their ongoing relationship would have a tremendous influence on Indira Devi as well as her guru Dilip Kumar Roy (1897–1980) and the increasingly international community that grew up around them. Their interactions and Indira Devi’s reports in turn would also significantly influence the reception and perceived continuing relevance of Mirabai as both inspiration and authorization for women’s self-realization. Additionally, Indira Devi’s own story reveals a mode of female guruhood, with a distinct absence of identification with shakti or divine incarnation, a more egalitarian model for the guru–disciple relationship, and an alternate bhakti mode of male–female collaborative leadership with Roy. Further their experiences with Mirabai offer insight into the ongoing engagement of women and men with such influential women of the past, the intersubjective nature of the traditions that surround them, and what Mirabai’s message might be for women (and men) today.
Properties of Gaze Strategies Based on Eye–Head Coordination in a Ball-Catching Task
Authors: Ono Seiji , Yoshimura Yusei , Shinkai Ryosuke , Kizuka Tomohiro
Published: April 2024

Visual motion information plays an important role in the control of movements in sports. Skilled ball players are thought to acquire accurate visual information by using an effective visual search strategy with eye and head movements. However, differences in catching ability and gaze movements due to sports experience and expertise have not been clarified. Therefore, the purpose of this study was to determine the characteristics of gaze strategies based on eye and head movements during a ball-catching task in athlete and novice groups. Participants were softball and tennis players and college students who were not experienced in ball sports (novice). They performed a one-handed catching task using a tennis ball-shooting machine, which was placed at 9 m in front of the participants, and two conditions were set depending on the height of the ball trajectory (high and low conditions). Their head and eye velocities were detected using a gyroscope and electrooculography (EOG) during the task. Our results showed that the upward head velocity and the downward eye velocity were lower in the softball group than in the tennis and novice groups. When the head was pitched upward, the downward eye velocity was induced from the vestibulo-ocular reflex (VOR) during ball catching. Therefore, it is suggested that skilled ball players have relatively stable head and eye movements, which may lead to an effective gaze strategy. An advantage of the stationary gaze in the softball group could be to acquire visual information about the surroundings other than the ball.
مدينة حلب في روايات أحمد زياد محبك
Authors: Alahmad Mohamad
Published: April 2024

تناولت الدراسة مدينة حلب في روايات أحمد زياد محبك، وتوقفت عند بناء المكان الحلبي في هذه الروايات، ورصدت فيه قلعة حلب وأحياءها وشوارعها وحدائقها ومساجدها وغيرها من الأماكن العامّة فيها. وتتبعت الدراسة البيت الحلبي بنوعيه القديم والحديث. وتتبع الدراسة أيضًا أسماء المجتمع الحلبي الروائي، وظهر للباحث أنها تنتمي إلى عدة منظومات، ولا سيما المنظومة الدينية والاجتماعية والمستحدثة. وتوقف الدراسة عند ملابس المجتمع الحلبي ومعتقداته وأطعمته وأشربته وأمثاله الشائعة بين أفراده وعاداته وتقاليده والأغاني التي اعتاد عليها هذا المجتمع. وتوصلت الدراسة إلى عدد من النتائج يأتي في مقدمتها أنّ مدينة حلب شكّلت المركز الذي دارت حوله معظم الأحداث التي تضمنتها روايات أحمد زياد محبّك، وبدا الروائي حريصًا على تقديم مدينة حلب على نحو يكاد يطابق الواقع، وبدا أنّه يريد أن يحفظ هذه المدينة روائيًّا كي يتسنى للقارئ معرفة هذه المدينة ويكوّن صورة واقعية عنها خلال الفترة الممتدة منذ منتصف القرن العشرين حتى أوائل القرن الحادي والعشرين.
CYBER SECURITY MANAGEMENT IN THE BUYER LOYALTY SYSTEM
Authors:   Chernivtsi Institute of Trade and Economics of SUTE, Koroliuk Yurii , Chychun Valentyna ,   Chernivtsi Institute of Trade and Economics of SUTE
Published: April 2024

The need to find new methods of management of trading enterprises, where the management of cyber security of trading operations should occupy a key position, is becoming highly relevant. The search and implementation of these methods is a priority task for management practitioners and theoreticians, public administration specialists. That is why the purpose of the article is to find and research effective methods of cyber security management in the customer loyalty system of domestic enterprises, to build an effective organizational chart of the customer loyalty cyber security management mechanism, which is based on the protection of all components of the commodity-economic interaction and its proper resource provision. As part of the study, the following general scientific theoretical methods were used: system analysis and synthesis - to build a management scheme for the loyalty cyber protection system; induction method - for accumulation, generalization and processing of information of relevance and unsolved research problems; the method of deduction - to distinguish the main components of the problem; methods of abstraction and concretization - for a schematic and practically oriented description of the problems of cyber protection of trade enterprises; abstract logical method - for identifying logical problems of the loyalty cyber protection system, assessing the risks of cyber incidents, identifying resource needs of cyber protection. As a result of research on the security of informatization of trade and economic processes, the significant impact of cyber incidents on the decrease in customer loyalty of trade enterprises has been confirmed. However, in the case of domestic sellers and buyers, there is a low interest in issues of information and cyber security of trade operations. The main problem remains the lack of a unified approach to managing customer loyalty cyber security. The paper proposes a scheme for cyber protection of customer loyalty, which provides for a comprehensive mechanism for assessing, monitoring and solving cyber risks and cyber incidents. The main component of the effectiveness of such a scheme is the Information Security Policy and the prompt response to cyber incidents. The practical significance of the obtained results lies in the fact that the recommendations and proposals outlined in the study provide justification for the implementation of an effective system of cyber protection of the loyalty of buyers of domestic trade enterprises. Prospects for further research in this direction are the segmentation of the organizational chart of the buyer's loyalty cyber security management mechanism for the cases of domestic trade enterprises of various types and sizes.
ASSESSMENT OF THE CURRENT STATE OF THE STATE FINANCES IN UKRAINE
Authors:   Кing Daniel’s University, Tymots Myroslava , Ivashkiv Taras ,   Кing Daniel’s University
Published: April 2024

The current state of public finances in Ukraine, in particular of state budget and debt burden is analyzed in the article. The relevance of the researched topic due to the need to build an effective system of the state finances that have a special value in the conditions of cyclical economic fluctuations and the decline of productive forces, decline in social living standards, decrease in competitiveness of our country and martial law. In order to perform these functions, the state finances should have an adequate and optimal resource base. The dynamics of nominal GDP for the last five years are given and also a comparative analysis of changes in GDP per capital was carried out in Ukraine and in leading European states. It was established that the nominal GDP of Ukraine in the national currency during the studied period had a tendency to increase except of key challenges and threats on the change in GDP were substantiated. The largest influence for reduction GDP in 2022 caused a full-scale invasion of the aggressor country in Ukraine, growth of external debt, a large part of a shadow economy and low investment attractiveness of Ukrainian companies. The implementation of the state budget of Ukraine analyzed in terms of income, expenses and lending. Revenues of the state budget in 2022 in creased due to the international financial help, which composed more than a quarter of all incomes of a state budget. State expenditures of budget in 2022 were on 17,1% lower than planned. It is observed the growth of a profitable part of a budget which is due to economic and political factors. The emergence of significant fluctuations and deviations in the structure of the reGDPvenue side of the state budget in the context of the budget policy of the state in modern conditions is due to the low quality of planning, which has been observed in recent years in the organization of public finances. The dynamics and structure of the state debt are given and also the dynamics of the debt burden for 2018-2022. It was grounded that the growing debt dependence of the Ukrainian government will significantly weaken the fiscal capacity of the state. In general, the stability of the public finance system, taking into account the existing challenges and threats.
MARKETING ACTIVITY OF NICHE TOUR OPERATORS IN THE CRISIS CONDITION OF THE TOURIST MARKET
Authors:   Yuriy Fedkovych Chernivtsi National University, Krupenna Inga
Published: April 2024

The war in Ukraine, the closure of airspace and drastic changes in demand affected the marketing, advertising, eventing and logistics of tour operators. In this regard, the segment of bus tours, which allow tour operators to avoid logistical problems, is actively developing. Entry into the niche of bus tours by new competitors presupposes the active use of marketing tools by all market participants. Marketing in the segment of bus tours is changing radically under the influence of the recent pandemic and quarantine restrictions, the war in Ukraine, the economic crisis, the active implementation of information technologies and digitalization, the emergence of new generations of consumers, environmental activities and other factors. Theoretical aspects of bus tourism marketing are developed and practices of using marketing tools by tourist operators of the bus tour segment in the crisis state of the domestic tourist market are generalized in this article. The essence, goals and objectives of marketing activity in the field of organized bus tourism are considered. The concept, specifics and types of bus tourism are described. It is proposed to understand bus tours as trips of organized groups of tourists on their own or rented buses of tourist operators along a certain route and a formed excursion program. Factors affecting the development of bus tourism and tourist demand for bus tours are noted. The marketing practice of domestic tourist operators in the «bus tours» segment is summarized and it is concluded that they understand the threats and modern challenges, therefore they actively use marketing tools to successfully compete and maintain their market share. The considered practices of marketing activity form cases for players of the tourism market to adapt their offer to modern realities related to the crisis state of the domestic tourism market caused by the war, a decrease in demand, population migration, the change of generations of consumers and demonstrate experience in using new communication channels, tools of sustainable tourism, etc.
Antoine Clarissy, un faïencier parisien à l’origine de la faïence de Moustiers ?
Authors: Denis-Dupuis Jessica
Published: April 2024

The discovery of unpublished archival documents revealing the Moustiers origin of Antoine Clarissy, allows to start writing a new history of the appearance of Moustiers earthenware. A major player in the development of ceramic industry in the French capital, this ceramist represents a forgotten link between Paris and Moustiers in the first half of the 17th century.
Le baron Davillier et l’histoire de la céramique espagnole : réflexions sur un manuscrit inédit
Authors: Baillot Elodie
Published: April 2024

Cet article propose d’éclairer le contenu d’un manuscrit inédit du baron Davillier (1823-1883) conservé à l’Instituto de Valencia de Don Juan. Consacré à l’histoire de la céramique espagnole et jamais publié, ce manuscrit qui fut probablement rédigé dans les années 1880 aurait constitué un jalon important dans l’historiographie de l’art céramique. Il s’agit ici d’en restituer les principaux apports tout en complétant les connaissances sur les travaux de Davillier.
Une approche archéométrique des reproductions de faïences de Delft chez Géo Martel à Desvres
Authors: Wouters Helena , Dumortier Claire
Published: April 2024

Grâce aux analyses non destructives XRF sur les émaux blancs et bleus, il est possible d’établir des marqueurs permettant de différencier les faïences de Desvres du 20e siècle des faïences de Delft des 17e et 18e siècles. Une avancée technologique et scientifique au service des conservateurs de musées, des experts et des collectionneurs.
Explotación de guanacos en la Sierra de San Luis durante el Holoceno tardío final. Análisis del sitio La Angostura 1 (departamento Coronel Pringles, provincia de San Luis, Argentina)
Authors: Carrera Aizpitarte Manuel
Published: April 2024

El guanaco constituye el recurso faunístico más abundante y con mayores evidencias de procesamiento antrópico en La Angostura 1. En el conjunto se han identificado individuos adultos y subadultos con distintos grados de representación anatómica. La buena preservación de los especímenes y la ausencia de preservación diferencial vinculada con la densidad ósea, permiten considerar que la frecuencia de partes esqueletarias observada responde principalmente a conductas y prácticas sociales. Debido a ello este sitio presenta una excelente oportunidad para abordar diferentes interrogantes relacionados con la forma en que las sociedades tardías explotaron esta especie animal. En este sentido, el objetivo del trabajo es indagar acerca del uso diferencial de los grupos etarios, los recursos aprovechados y las conductas sociales o económicas que incidieron en las frecuencias anatómicas registradas. Para ello, se tuvieron en cuenta distintos índices económicos y propuestas alternativas que agrupan diferentes regiones anatómicas en función del producto primario predominante en ellas. Además, se consideraron los productos no alimenticios que pudieron haber sido utilizados. Los resultados alcanzados indican que ambos grupos etarios (adultos y subadultos) fueron explotados en forma similar. Asimismo, las representaciones anatómicas registradas no estarían mediadas por la selección de un producto alimenticio en particular ya que, en términos generales, las carcasas fueron transportadas casi completas hasta el lugar de consumo. Esta situación podría vincularse con una estrategia de explotación integral de los animales donde, además del alimento, cobran relevancia otros subproductos empleados con fines tecnológicos.
El hábitat de poblados tardocoloniales de la Puna de Jujuy (Argentina) desde sus configuraciones arquitectónicas y espaciales
Authors: Giusta Marco Nicolás
Published: April 2024

En el marco de nuestras investigaciones sobre procesos sociales ocurridos en la Puna de Jujuy (Argentina) durante el segundo milenio A.D., analizamos de manera general los impactos de la conquista y colonización españolas y, en particular, estudiamos las características del hábitat de asentamientos de momentos tardocoloniales. En este trabajo tomamos como caso de estudio a Antiguyoc y Quebrada del Maray 4, dos poblados ubicados en la localidad de Antiguyoc que formaron parte de la viceparroquia homónima perteneciente al curato de Rinconada entre 1777 y 1824. Recuperamos las características arquitectónicas de los sitios y evaluamos las configuraciones espaciales de los espacios construidos, tomando en cuenta sus modos de organización y sintaxis espacial. A su vez evaluamos aspectos diacrónicos como crecimientos y modificaciones. Pretendemos mostrar cómo estos estudios contribuyeron a las interpretaciones que llevamos a cabo acerca de la manera en que se configuró el hábitat de los asentamientos, de acuerdo con las características étnico-sociales de sus habitantes y sus trayectorias históricas.
Unlocking Community Engagement in REDD+ Initiatives: Insights from a Case Study in the Amazon
Authors: Gomes Sérgio Castro , e Cardoso Luis Fernando Cardoso , Cabral Eugênia Rosa , de Santana Antônio Cordeiro , Mota Negrão Keila Regina , Bahia Pablo Queiroz
Published: April 2024

The literature on national plans to reduce emissions from deforestation and forest degradation (REDD+) shows that the stakeholders present in the territory, especially the communities, are the focus of these actions. The article questions the level of community engagement in a proposed REDD+ project in the Amazon by private companies, with the aim of analyzing the socio-economic and environmental aspects of community residents. The theoretical framework integrates stakeholder theory and community participation theory to support the analysis of the level of engagement. 338 small rural producers were chosen from among the residents of 23 communities in four municipalities in the state of Pará. The socio demographic characteristics were collected and structured in tables and graphs. The results reveal that the communities are socially disjointed, with problems defining property rights and access to government goods and services, which makes it difficult to achieve the benefits declared by the REDD+ project.
The Public Art of Commemorating the Wars of Resistance: A Brief Limpopo Chapter
Authors: Thotse Mahunele
Published: April 2024

This book examines sites in Limpopo Province where the history of the Wars of Resistance is represented on the landscape through public art that celebrates the traditional leaders who fought those wars. The Public Art of Commemorating the Wars of Resistance: A Brief Limpopo Chapter explores the overlapping and oftentimes complex relationships between identity, memory, heritage and the cultural landscape. The book draws particular attention to the powerful role that statues, honouring traditional leaders who fought wars of resistance, have played in saving their peoples’ land from colonial conquerors. This book is a welcome addition to the growing literature on the memorialisation of the Wars of Resistance in South Africa. The book further provides a stimulating introduction to the issue of how South Africans commemorate the Wars of Resistance.
South Africa's Easy Election Guide: Who To Vote For in 2024
Authors: Bauer Nickolaus
Published: April 2024

South Africa’s most important election since 1994 may deliver the first coalition government in a democratic South Africa. However, as political parties vie for the votes of South Africans: How do citizens make the choice of where to put their mark? Who can they trust to give voice to their aspirations and help rebuild and grow Africa’s most developed economy to benefit more people in the world’s most unequal society?
La lógica sinodal y paradigmas de masculinidad
Authors: FitzGerald Eileen
Published: April 2024

La búsqueda de la verdad invita al diálogo entre la teología y otras disciplinas. La propuesta de la renovación sinodal de la Iglesia trae consigo una invitación a la conversión sinodal, dejando que la relación con Jesucristo nos transforme el corazón y nuestros modos de relacionarnos. Por el destacado protagonismo de los varones en la vida de la Iglesia, es importante considerar los modelos masculinos subyacentes en la cultura eclesiástica y sus sustentos antropoteológicos. Un diálogo entre la teología y las llamadas “nuevas masculinidades” puede iluminar el discernimiento de las transformaciones necesarias para amoldarse al proyecto sinodal.
Filosofía para niños y construcción de ciudadanía: Voces desde el contexto colombiano en el periodo 2016-2022
Authors:   , Muñoz Velásquez Juan David
Published: April 2024

En la presente tesis consiste en un estado de la cuestión, se establece la relación entre la filosofía para niños y la construcción de ciudadanía, a partir de la recuperación de los diferentes aportes de los autores que han discurrido sobre el tema en el contexto colombiano, entre el periodo 2016-2022. Se configuró una metodología con enfoque cualitativo en la que se lleva a cabo un análisis de la producción académica seleccionada desde una perspectiva hermenéutica. Se hizo una exhaustiva revisión de las fuentes, la cual incluye un proceso de selección, codificación y/o categorización de los referentes y sus conceptos evidenciados; posteriormente se analizaron los resultados a partir de la propuesta de lectura e interpretación formulada por de H. G. Gadamer. Como resultado, se identificó que en Colombia existe, desde inicios del 2000, un grupo de académicos, pertenecientes a facultades de educación y de filosofía, que se han encargado de reflexionar teóricamente sobre la filosofía para niños y de llevar a la práctica los postulados de este programa, diseñado por Mathew Lipman y Ann Sharp, según el contexto colombiano. La FpN incluye un ingrediente ético y democrático que invita a que el espacio de investigación voluntaria y colectiva esté orientado por reconocer el valor de la diferencia y la diversidad, y el respeto por la opinión del, base fundamental de la manera como se piensa una educación enfocada en la construcción de ciudadanía. Uno de los principales criterios para implementar la FpN es que el programa se adapte a las realidades del contexto educativo colombiano, siendo la resolución de conflictos y el escenario posconflicto factores determinantes en la manera como el programa se adecúa a la necesidad de construcción de ciudadanía. Del análisis realizado se concluye que la filosofía para niños y la construcción de ciudadanía son dos nociones que se encuentran relacionadas desde la esencia del programa pues este tiene un ingrediente relativo a la ética y a la formación de ciudadanos críticos, éticos y creativos. En particular, en Colombia, durante el periodo 2016-2022 se publicaron documentos académicos que evidencian un gran interés por la FpN pues los investigadores identificaron un potencial muy valioso para implementar en las escuelas donde se presentan problemáticas como el conflicto armado, la desigualdad social, la falta de inclusividad o la delincuencia juvenil.
La organización gremial docente en la provincia del Chubut durante la década del '80
Authors:   , Caprano Celia Raquel
Published: April 2024

Esta tesis aborda el proceso desarrollado por las y los trabajadoras/es de la educación del Chubut durante la década del ’80, poniendo énfasis en recuperar las memorias acerca de las formas de organización gremial y los procesos de lucha llevados adelante por este colectivo de trabajadores/as. Entendemos necesario recuperar la historia de las organizaciones gremiales de las/os trabajadoras/es, en tanto forma de construcción colectiva de resistencia y proyección de identidad, al tiempo que se hacen observables las condiciones laborales características de las y los docentes. Las y los trabajadoras/es de la Educación del Chubut han sido poco estudiados; las memorias de sus formas de organización y lucha perviven en forma oral o en producciones fragmentarias que abordan alguna huelga en particular, sin llegar a visualizar los procesos más generales que atraviesan a este colectivo. Se revisan aquí los distintos debates internos que atravesaron a la organización gremial docente provincial: en especial la nominación como docentes o trabajadores de la educación, la participación político partidaria y el ocupar cargos en la cartera educativa provincial. Se trabaja con testimonios orales, documentación periodística y archivos de la organización gremial. Estas fuentes facilitan el análisis y permiten construir un trabajo de investigación que registra diversas aristas tales como organización, resistencia, experiencia e interseccionalidad
Impacto de la pandemia por Covid-19 en la situación metabólico-nutricional de la población de diabéticos tipo 2 que asisten a la consulta de Nutrición en la mutualista Sociedad Médico Quirúrgica de Salto (SMQS), Uruguay
Authors:   , Palacios Delgado María Agustina
Published: April 2024

Introducción: En el contexto de aislamiento sanitario generado por la pandemia por covid-19, se percibió la posibilidad de cambios en el estado nutricional y perfil metabólico de los pacientes con Diabetes Mellitus tipo 2, que se atendieron en la policlínica de Nutrición de la mutualista Sociedad médico quirúrgico de Salto, Uruguay. Objetivo: Conocer el impacto de la pandemia por Covid-19 sobre la situación metabólico-nutricional de la población con Diabetes tipo 2 que asiste a la consulta de Nutrición en la mutualista Sociedad Médico Quirúrgica de Salto (SMQS), Uruguay. Métodos: Se realizó un estudio observacional analítico retrospectivo. La muestra fue aleatoria simple, con un N de 100. Se tomaron los datos de las historias clínicas electrónicas del consultorio de Nutrición de la mutualista Centro Médico de la ciudad de Salto, Uruguay. Se tomaron 2 cortes para el periodo de estudio, se incluyeron los datos de pacientes controlados antes de la pandemia (2018-2019) y de los mismos pacientes durante la pandemia (2020-2021). Para el análisis estadístico se utilizó el software R. El estudio fue aprobado por el Comité de Bioética (COBIMED) de la Facultad de Ciencias Medicas de la Universidad Nacional de La Plata. Resultados y conclusiones: En los pacientes incluidos en esta tesis en los cortes estudiados: no se observaron cambios significativos en las variables antropométricas. La HbA1c aumentó de manera estadísticamente significativa, independientemente de la edad, el estado nutricional antropométrico y sexo. El colesterol total presentó una disminución estadísticamente significativa en la población estudiada. Igual comportamiento presentaron: la población ≥ 60 años, IMC ≥ 30, sexo masculino. El índice de riesgo aterogénico mostró valores medios elevados en todos los grupos estudiados. No se observaron cambios estadísticamente significativos en el indicador de la función renal.
FIELD TRAVERSAL PATH PLANNING FOR AGRICULTURAL ROBOTS IN HILLY AREAS BASED ON DISCRETE ARTIFICIAL BEE COLONY ALGORITHM
Authors: LOU Xiaodong , LI Zheng
Published: April 2024

In this study, the discrete artificial bee colony (DABC) algorithm was proposed to plan the path of agricultural robots traversing multiple fields in hilly areas. Based on the basic ABC algorithm as the framework, the path coding method was adopted, and the discrete crossover operator, reverse operator, immune operator, and single/multi-step 2-opt operator were comprehensively used to help hired bees, observing bees, and scout bees to generate new food sources. Finally, the optimized field traversal order and the entrance and exit distribution of each field were obtained. The simulation results showed that compared with the traditional ABC algorithm, the average shortest path of the DABC algorithm proposed in this study was shortened by 1.59%, accompanied by the less iterations contributing to algorithm convergence and good ability to jump out of the local optimal solution. The simulation experiment was carried out using real field data and field operation parameters. The field traversal order and the entrance and exit distribution obtained by the proposed method can effectively reduce the length of the transfer path and its repeatability. This study exhibits superiority and feasibility in the field traversal path planning of agricultural robots in hilly areas, and the trajectory coordinates output by the algorithm can provide a path reference for large-area operations of agricultural machinery drivers or unmanned agricultural machineries.
STUDY ON THE DETERMINATION OF PHYSICAL AND MECHANICAL PROPERTIES OF LAVENDER
Authors: LI Yang , TAO Yanmin , CHEN Yulong , LEI Yiteng
Published: April 2024

The mechanical properties of lavender are the basis for design and study of mechanized equipment for planting and harvesting of lavender. This paper determines and studies the natural width and height of plant and spike length of three kinds of lavender widely planted in the Yili region and obtains the distribution rules of parameters of the basic physical properties of lavender. Meanwhile, the test of the mechanical properties of lavender was done at the moisture content in the harvest period and different moisture contents. The results indicated that the maximum separation force of the flower of three kinds of lavender (111.3N) was much smaller than the minimum breaking force of the stem (201.5N); and the moisture content significantly affected the mechanical properties of lavender, which could provide corresponding design parameters and important theoretical basis for the design of a new lavender harvester based on separation technology.
THE EFFECT OF THE LAMB GENOTYPE ON PROTEIN METABOLISM IN THE BODY
Authors: Косилов В.И. , Миронова И.В. , Долженкова Г.М. , Ахмадуллина Э.Т. , Салихов А.Р. , Алексеев О.В.
Published: April 2024

В статье приводятся результаты изучения особенностей обмена белка в организме чистопородных баранчиков романовской породы (Iгруппа), её помесей первого поколения с эдильбаевской (½ романовская × ½ эдильбай – II группа) и второго поколения (¼ романовская × ¾ эдильбай – III группа). Установлен положительный баланс азота у баранчиков всех подопытных групп. В то же время, вследствие проявления эффекта скрещивания, помесный молодняк II и III групп превосходил чистопородных сверстников I группы по потреблению и перевариванию азота, отложению его в теле, величине коэффициента использования как от принятого, так и переваренного. Так, чистопородные баранчики Iгруппы уступали помесному молодняку II и III групп по потреблению азота с кормом, соответственно, на 3,25 г (10,61%) и 3,49 г (11,39), массе переваренного – на 2,29 г (12,04%) и 2,55 г (13,41%), отложению в теле – на 1,65 г (23,77%) и 1,79 г (25,79%). Помесный молодняк II и III групп превосходил чистопородных сверстников I групп по величине коэффициента использования азота от принятого с кормом на 2,70 и 2,93%, от переваренного – на 3,82 и 3,96% соответственно. Статистически недостоверное преимущество по выделению азота с калом было на стороне помесных баранчиков II группы, с мочой – помесного молодняка III группы. Лидирующее положение по потреблению и использованию азота корма занимали помесные баранчики III группы.

The article provides the results of studying the characteristics of protein metabolism in the body of purebred lambs of the Romanov breed (group I), its crossbreeds of the first generation with the Edilbaev (½ Romanov × ½ Edilbay – group II) and the second generation (¼ Romanov × ¾ Edilbay – group III). A positive balance of nitrogen was established in the lambs of all experimental groups. At the same time, due to the manifestation of the crossbreeding effect, the crossbreed young animals of groups II and III were superior to the purebred herdmates of group I in the consumption and digestion of nitrogen, its deposition in the body, and the value of the utilization coefficient from both accepted and digested. Thus, the purebred lambs of group I were inferior to the crossbred young animals of groups II and III in terms of nitrogen consumption with feed, respectively, by 3.25 g (10.61%) and 3.49 g (11.39), the mass of digested – by 2.29 g (12.04%) and 2.55 g (13.41%), deposition in the body – by 1.65 g (23.77%) and 1.79 g (25.79%). The crossbred young animals of groups II and III exceeded the purebred herdmates of groups I in terms of the nitrogen utilization coefficient from the accepted with feed by 2.70 and 2.93%, from the digested – by 3.82 and 3.96%, respectively. A statistically unreliable advantage in the release of nitrogen from feces was on the side of crossbreed lambs of group II, and with urine – crossbreed young animals of group III. The leading position in the consumption and use of nitrogen feed was occupied by crossbreed lambs of the III group.
AGRICULTURE IS THE FUNDAMENTAL INDUSTRY OF THE VOLOGDA REGION
Authors: Маклахов А.В. , Симонов Г.А. , Приятелев В.В. , Марценюк Е.А.
Published: April 2024

В статье рассмотрены вопросы развития АПК Вологодской области на современном этапе. Установлено, что кормовые культуры в структуре посевных площадей занимают 61,6%, что позволяет эффективно развивать отрасль животноводства в регионе. В 2022 году объём производства сельскохозяйственной продукции в Вологодской области составил 50,6 млрд рублей, в том числе 15,9 млрд руб. в растениеводстве и 34,7 млрд. руб. – в животноводстве. Индекс производства в 2022 году к уровню 2021 года составил 104,8% в растениеводстве и 100,6% – в животноводстве. При этом в сельскохозяйственных организациях объём производства продукции в денежном выражении был выше на 3,1% к уровню 2021 года. В структуре сельскохозяйственного производства в регионе в 2022 году приходилось на животноводство 68,6% и на растениеводство – 31,4%. Полученные данные позволят более правильно спрогнозировать развитие сельского хозяйства в области на перспективу.

The article discusses the development of the agroindustrial complex of the Vologda region at the current stage. It has been established that forage crops occupy 61.6% in the structure of sowing areas, which makes it possible to effectively develop the livestock industry in the region. In 2022 the volume of agricultural production in the Vologda region amounted to 50.6 billion rubles, including 15.9 billion rubles in crop production and 34.7 billion rubles – in animal husbandry. The production index in 2022 compared to the level of 2021 amounted to 104.8% in crop production and 100.6% in animal husbandry. At the same time in agricultural organizations the volume of production in monetary terms was 3.1% higher than compared to the level of 2021. In the structure of agricultural production in the region in 2022, livestock production accounted for 68.6% and crop production – 31.4%. The data obtained will make it possible to more correctly predict the development of agriculture in the region for the future.
Measures for reducing the probability of damages in water distribution networks
Authors: Радецкий М.Ю. , Горельников И.А.
Published: April 2024

Рассмотрены мероприятия по снижению вероятности возникновения повреждений на водопроводных сетях при определенных технологических условиях эксплуатации. Представлен опыт применения клапана, предупреждающего гидроудар, и редукционного клапана в едином исполнении. Установка клапана, предупреждающего гидроудар, на напорном коллекторе насосных станций является эффективной защитой от повреждений напорных водоводов при внезапной остановке насосных агрегатов, а также при резком неконтролируемом росте давления в них. Анализ работы многофункционального клапана предупреждения гидроудара с функцией поддержания заданного значения давления до себя и удаленным управлением подтвердил более плавное изменение давления на выходе с насосной станции первого подъема, а также меньшие отклонения фактического значения от заданного при изменении объема подачи технической воды. Показано, что данное оборудование эффективно при отсутствии станций частотного управления, а также при возникновении чрезвычайных ситуаций.

Measures for reducing the probability of damages in water distribution networks under certain technological operating conditions are considered. The experience of using a valve that prevents water surge in combination with a pressure relief valve is presented. Installing a valve that prevents water surge in the pressure manifold of pumping stations provides for the effective protection against damages of pressure water conduits in case of a sudden stop of pumps, as well as in case of a sharp uncontrolled pressure increase in them. Analyzing the operation of a multifunctional water surge protection valve with the remote control and function of maintaining the set pressure upstream proved a smoother pressure change at the outlet of the booster pumping station, as well as smaller deviations of the actual value from the set value as the volume of process water supplied changes. It is shown that the equipment is effective in the absence of variable speed control units, as well as in emergency situations.