bluuebunny/crossref_metadata_2025 huggingface dataset:
Comparative Performance of Machine Learning Algorithms for Predicting Future Committer in Blockchain Projects
Authors: Alawiyah Abd Wahab  , Huda H. Ibrahim  , Shehu M. Sarkintudu  , Maslinda Mohd. Nadzir  , Zhamri Che Ani
Published: December 2023

The success of blockchain projects depends, to a large extent, on the developer's involvement. Source code-commit privilege to the project is typically restricted to a few developers known as committers. Project leaders continuously search for new committers to evolve into a high-quality blockchain. However, promoting developers into committers is risky, mainly when the promoted committers exhibit low involvement behaviour. Hence, the committer assessment process is critical to the successful evolution of blockchain projects. The phenomenon of developer induction as code committers has previously been explored in the literature. However, previous studies employed objective measures such as the number of bugs report and code patches to appraise the developers activities for promotion purposes. Although these approaches are significant, behavioural tendencies influencing developers' activities are ignored. There have, however, been comparatively few investigations on a subjective measure that evaluate developers' perception of their activities for promotion purposes. This study aims to appraise blockchain developers' perceptions for predicting future committers in blockchain projects. In this study, 173 blockchain developers’ perceptions were gathered. The study employed hybrid analyses such as Structural Equation Modelling (SEM) to first analyse the survey data and Machine Learning (ML) algorithms to predict future committers. The performance of various ML algorithms was evaluated compared to classification performance indicators such as the F1 score, accuracy, precision, and AUC. In addition, the study also investigates the most important factors that predict future committers. The results indicate that XGBoost algorithm achieves the best performance with an accuracy of 0.94. Moreover, the most important factors in predicting future committers in a blockchain project are project desertion, developer involvement, decision-right delegation and system integration.
The zoo in the Russian children`s book of the 1920s
Authors:   Research Institute of Theory and History of Fine Arts Russian Academy of Arts, Fomin Dmitry
Published: December 2023

The article analyzes the most interesting and revealing “picture books” of the 1920s, united by the theme of visiting the zoo (menagerie), so beloved by the children`s audience. This topic was addressed by famous masters of various directions: animalists who followed the traditions of realistic illustration of the late XIX – early XX centuries (V.A. Vatagin, A.N. Komarov), OST graphics (N.N. Kupreyanov, Yu.I. Pimenov), avant-gardists (V.M. Ermolaeva, K.M. Zdanevich). Their works allow for a comparison of different artistic approaches to the subject, revealing characteristic narrative patterns and genre clichés found in such publications, as well as typical images and graphic techniques.
Little known facts about lifes of A.K. Syropyatov and N.N. Serebrennikov, founders of Perm State Art Gallery
Authors:   Perm State Art Gallery, Otmakhova Anna
Published: December 2023

The article is dedicated to the 100th anniversary of Perm State Art Gallery, opened on November 7, 1922. The first director was Alexander Konstantinovich Syropyatov, and the second Nikolai Nikolaevich Serebrennikov was a collector and researcher of Perm wooden sculpture. The article enumerates some little known facts in the biographies of the founders of the museum. Documents from the archives of Perm State Art Gallery, Perm Museum of Local Lore, and Perm Archive of Social and Political History are used.
The article by A.V. Bakushinsky, “Exhibition of works by V.N. Chekrygin”, in the magazine “Russian Art” as the foundation for art historical interpretation
Authors:   Russian Academy of Painting, Sculpture and Architecture Ilya Glazunov, magazine “Russian Art”, Slep Daria
Published: December 2023

The article undertakes an analysis of the artistic aspects of V.N. Chekrygin’s creative activity based on the article by A.V. Bakushinsky, “Exhibition of works by V.N. Chekrygin”, in the magazine “Russian Art” (1923). The author highlights the specificity of the critic’s research approach in defining the artist’s individual style, linked to the reflection of socio-cultural phenomena of the time, the nature of the artist’s process in creating the series of drawings “Resurrection of the dead” and the substantiation of the problematic nature of coexisting contradictory stylistic tendencies in these works.
Remaking the World with Beauty: Landscape in the art of Elena Kiselyova. Introduction to the topic
Authors:   Art Museum of Voronezh Region named after I.N. Kramskoy, Khruslova Nadezhda
Published: December 2023

The article is dedicated to the oeuvre of the Voronezh artist Elena Andreevna Kiselyova (1878–1974), not widely known but vivid and original representative of the art of the late 19th and early 20th centuries. The text attempts to analyze the place of landscape in the paintings and graphics of the artist, who primarily worked in the portrait genre. Using the variational features of Kiselyova’s created natural images as an example, the author seeks to demonstrate the unity underlying their common task – the artist’s endeavor to remake the world on canvas according to the creative logic of Beauty, the dominant aesthetic category of the Art Nouveau era. This work primarily focuses on the pre-revolutionary period as the source and flourishing time of the artist’s creative method, as well as the early period of her emigration (1920s) closely associated with it.
Apresentação : classes subalternas e instituições públicas
Authors: Pires Roberto Rocha Coelho , Avelino Daniel Pitangueira de
Published: December 2023

Esta edição do Boletim de Análise Político-Institucional (Bapi) conta com quatro artigos que compõem o dossiê temático Classes Subalternas e Instituições Públicas. Os artigos são fruto de pesquisas conduzidas no âmbito do programa e rede de pesquisa Lower Classes and Public Institutions (Loci), coordenada internacionalmente pelo professor Vincent Dubois, da Universidade de Estrasburgo, envolvendo pesquisadores de dezoito países na Europa, na América Latina e na Austrália. No Brasil, o projeto vem sendo coordenado pelo Instituto de Pesquisa Econômica Aplicada (Ipea) e conta com a participação de pesquisadores da Fundação Getúlio Vargas (FGV) e da Universidade Federal da Paraíba (UFPB).
O que é o estado para os pobres? Instituições públicas na perspectiva de moradoras de um bairro de baixa renda
Authors: Machado Nínive Fonseca , Medeiros Rogério de Souza
Published: December 2023

O artigo leva os leitores ao contexto de um bairro de baixa renda em João Pessoa, na Paraíba. Os autores apostam em uma abordagem biográfica que, por meio de entrevistas em profundidade com mulheres beneficiárias de serviços públicos, restitui as trajetórias de vida percorridas por elas desde suas infâncias até se tornarem adultas, salientando os momentos e o contexto em que as instituições públicas são acessadas, bem como a forma como elas se relacionam com os serviços. Por meio da análise das trajetórias de vida, os autores identificam elementos socioculturais importantes – valores morais, sentidos de dignidade e valor próprio, senso de pertencimento, de obrigação e de responsabilidade – que interferem no acesso, na compreensão, na confiança ou desconfiança que elas desenvolvem em relação a essa instituição.
Território e violência : o vínculo nas políticas públicas da “Cracolândia” de São Paulo
Authors: Magri Giordano , Lotta Gabriela , Miranda Juliana Rocha
Published: December 2023

O artigo nos leva ao território pejorativamente conhecido como Cracolândia, na cidade de São Paulo. Em meio a um quadro extremamente complexo de conflitualidade, construído ao longo das últimas décadas a partir de intensa presença do Estado e de diversos grupos em situação de extrema vulnerabilidade, os autores buscam refletir sobre o conceito de vínculo, tão presente nas formulações das políticas de cuidado nas áreas de assistência social e saúde. A ideia de vínculo é tomada como categoria analítica para a abordagem das dinâmicas e dos imbricamentos que envolvem a relação entre as burocracias de nível de rua e os diferentes grupos vulnerabilizados. Trata-se de relação que neste contexto é permeada pela violência, especialmente a policial, o que faz com que a implementação de políticas públicas de cuidado e atenção também seja atravessada pelo conflito.
Previsão de homicídios no estado do Rio de Janeiro : um Benchmark
Authors: Lins Gabriel de Oliveira Accioly
Published: December 2023

O autor faz uso de técnicas de previsão e avaliação, de acordo com as práticas da literatura internacional, para tentar estabelecer um modelo preditivo do número de homicídios dolosos no estado. Com isso, são apresentadas evidências da capacidade preditiva de modelos univariados, o que pode contribuir para a previsão da dinâmica criminal e o planejamento da política de segurança.
Financiamentos chineses de projetos de energias renováveis na América Latina : uma análise à luz dos desafios das mudanças climáticas
Authors: Nunes Ticiana Gabrielle Amaral , Di Marco Giulia Mariana Rodrigues , Mendonça Marco Aurélio Alves de
Published: December 2023

A proposta deste trabalho consiste em conectar e sistematizar os elementos que integram a evolução da China em sua consolidação como país líder em transição energética, participante ativo e engajado nas negociações multilaterais do clima e financiador internacional de projetos verdes de baixo impacto ambiental ou de tecnologias de baixo carbono. O pano de fundo da análise reside no diagnóstico oferecido pelo conceito de Antropoceno, que atribui à ação humana sobre o meio ambiente a responsabilidade central pela aceleração das mudanças climáticas nas últimas décadas. Adicionalmente, identifica-se na visão ou paradigma político de civilização ecológica a orientação macroestratégica gradativamente incorporada às diretrizes para a descarbonização doméstica da economia e para a atuação global de empresas e entidades chinesas de financiamento externo. Buscou-se identificar as repercussões dessas diretivas centradas na elevação dos padrões socioambientais do Investimento Externo Direto (IED) e dos financiamentos chineses no exterior. Observou-se indícios que sinalizam uma descarbonização dos capitais chineses em projetos de geração de energia no exterior, com a elevação recente e projetada de unidades de geração a partir de fontes limpas e um declínio dos projetos de carvão, embora ainda pairem incertezas e permaneçam desafios relevantes, em particular a atuação futura dos bancos de política e seus portfólios intensivos em emissões. Na América Latina, verificou-se que, embora tenha sido detectada uma redução da participação em investimentos diretos e construção de empreendimentos hidrelétricos de grande envergadura, foi constatado um maior interesse por projetos em energia eólica e solar.
Foreword to Special Issue
Authors: Cassimatis Anthony
Published: December 2023

Foreword to Special Issue of the University of Queensland Law Journal celebrating the 20th anniversary of the Centre for Public, International and Comparative Law ('CPICL').
A Study on the Human Rights Violations of the Elderly in Nursing Hospitals
Authors:   Center for Public Interest & Human Rights Law Chonnam National University, Kim Seon-Hyub
Published: December 2023

Currently, a nursing hospital is a hospital-level medical institution in which doctors, dentists, or oriental doctors perform medical treatment mainly for inpatients under the Medical Act, and any medical person other than a doctor or oriental doctor can be opened.
So-called nursing hospitals must inevitably have more than 30 nursing beds and have medical personnel of a certain level or higher. To open a convalescent hospital, permission must be obtained from the mayor/ province governor as prescribed by the Ordinance of the Ministry of Health and Welfare after deliberation by the City/Province Medical Institution Establishment Committee. If not, permission cannot be obtained.
Currently, patients who are admitted to nursing hospitals are 1. Elderly patients, 2. Chronic patients, and 3. Those who have a recovery period after surgery and injury, and mainly need nursing care. With the enactment of the Medical Act in 1994, the legal concept of nursing hospitals was stipulated. Since the 2000s, the number of elderly nursing hospitals has increased rapidly in tandem with the increase in the elderly population following changes in Korea's demographic structure. In the midst of this, cases of human rights violations of the elderly continue to occur in the stages of entering and leaving nursing hospitals and living stages. The violation of the human rights of the elderly here is related to the violation of basic human rights under the Constitution and, furthermore, to the issue of elder abuse under the Elderly Welfare Act.
Therefore, in this paper, it is hoped that policies and measures for ensuring and realizing the rights of the elderly are guaranteed and realized through the correct prevention of violations of the human rights of the elderly in nursing hospitals. First, we would like to make legislative proposals on the provision of human rights education regulations, second, the mandatory installation of CCTVs, third, the necessity of expanding medical personnel, and fourth, the unification of management and supervisory bodies for insolvent nursing hospitals.
Procedures for Monitoring the Implementation of the Convention for the Protection of All Persons from Enforced Disappearance and Republic of Korea's Implementation
Authors:   Center for Public Interest & Human Rights Law Chonnam National University, PARK Jina
Published: December 2023

On January 4, 2023, Republic of Korea acceded to the International Convention for the Protection of All Persons from Enforced Disappearance. With this accession, Korea is now a party to eight of nine core UN human rights treaties, excluding the International Convention on the Rights of Migrant Workers.
The Convention for the Protection of All Persons from Enforced Disappearance adopts various procedures to monitor the implementation and compliance of State Parties' obligations and establishes the Committee on Enforced Disappearances as the body to operate them. By acceding to the Convention, Korea is automatically subject to the Convention's procedures such as States Parties reports, urgent action, and country visits. In addition, the optional procedures of individual communication and inter-state communication are also available to Korea as it has declared its acceptance of the relevant provisions. As Korea is already subject to similar implementation monitoring procedures to the Convention, such as the International Covenant on Civil and Political Rights, the Convention Against Torture, and the Working Group on Enforced Disappearances, there are actually no additional sovereignty constraints or obligations that would be added by Korea’s accession to the Convention. For now, the Convention requires the submission of a national report by February 3, 2025, and while there is a need to align domestic legislation with the Convention's standards and reflect this in the national report, the Convention is a single reporting system, meaning that once the first national report is completed, the burden of reporting will be lessened in subsequent years.
Withe the accession to the Convention, Korea has ratified or acceded to most of the UN human rights treaties, further solidifying its position as a key member of the UN human rights treaty system. Unfortunately, the Convention is limited in its universal application due to the slow pace of ratification and non-recognition of individual communication and inter-state communication. In this respect, Korea's accession is significant in terms of the spread and development of the Convention. Korea is the only country in the Asia-Pacific region that has accepted individual communication and inter-state communication at the same time as it accessed the Convention, which confirms its commitment to human rights protection and its participation in the international human rights protection system.
The constitutionality of the amendment to Article 11 of the Assembly and Demonstration Act - an absolute ban on assemblies in the vicinity of the executive office of the President and former President's residence
Authors:   Center for Public Interest & Human Rights Law Chonnam National University, Lee Jonghoon
Published: December 2023

Recently, some members of National Assembly proposed an amendment to Article 11 of the ‘Assembly And Demonstration Act’ in order to ban on assemblies in the vicinity of the Executive Office of the President and former President's residence This paper will examine the constitutionality of this proposal.
Absolute no-assembly zones have historically been used by military regimes as a means to curb citizens' freedom of assembly. These zones are generally thought to be unduly restrictive of freedom of assembly and do not pass the proportionality test. In fact, the Constitutional Court of Korea has ruled several parts of Article 11 of the Assembly And Demonstration Act unconstitutional.
Before examining the constitutionality of this amendment proposal, we must first define the concept of “Presidential residence” in Article 11(3) of the Assembly And Demonstration Act. Taking into account the dictionary meaning of the term, the structure of Article 11 of the Assembly And Demonstration Act, and the guarantee of freedom of assembly, the term “presidential residence” refers to the living quarters of the President and his family.
The absolute prohibition of all assemblies in the vicinity of the President's residence is aimed at protecting the constitutional functions of the President, and the absolute prohibition of all assemblies in the vicinity of the residence of former presidents is aimed at ensuring the personal safety of former presidents and the tranquility of their residences. These legislative objectives are legitimate. However, the above provisions uniformly prohibit all assemblies despite the fact that there is no need to regulate small and peaceful assemblies. Also, the legislative objectives can be achieved through the Assembly and Demonstration Act, the Criminal Code, and the Presidential Security Act. Therefore, these provisions violate the right to freedom of assembly. The amendments should not be passed.
‘The Limits of Austerity’
Authors: Tomlinson Jim
Published: December 2023

One of the challenges of historical work is the way in which concepts that have a powerful but limited traction in understanding episodes in the past are then used promiscuously and therefore unhelpfully. A recent example is ‘neoliberalism’, a term productively used to understand and analyse an important post-1940 intellectual movement, but commonly deployed to characterize all kinds of political and economic developments across the West since the 1970s. This is not, of course, an argument for not using the concept, but rather for its careful deployment.

A similar problem can occur with ‘austerity’, which Clara Mattei applies to the years after the First World War when, following the initial post-war boom, restrictive economic policies were developed from 1920–21. Mattei offers a comparative account of Britain and Italy organized around ‘austerity,’ framed as a recurrent ruling-class strategy to suppress workingclass revolt. Her account is flawed by an exaggeration of the scale of the post-war labour insurgency in both Britain and Italy, and by the failure to assess the constraints imposed on their governments by the interconnectedness of the world capitalist order. She also greatly overestimates the role of economists in shaping the policy of austerity.
The British Printers’ 40-Hour-Week Strike of 1959: Background, Dispute, and Aftermath
Authors: Lyddon Dave , Roe Alan , Telford Jim
Published: December 2023

The 1959 printing workers’ strike for the 40-hour week led to them winning that iconic demand which then spread to other manual workers. This success was all the more remarkable as the printing industry was riven by union ‘wage autonomy’ and craft divisions. The unity of the print unions’ federation allowed it to sustain a seven-week strike.

The print employers’ long-standing concern had been labour supply, particularly apprentice numbers. This figured prominently in 1959, along with ‘efficiency’ measures, codified in a twenty-two-point list. The terms agreed were generally ‘permissive rather than mandatory’ and the employers would keep returning to this agenda over subsequent decades.

The unions would not accept arbitration in such complex talks: two sets of pay negotiations (craft and non-craft), individual unions’ ‘domestic’ claims, and their federation leading on working time. When a related dispute at printing-ink manufacturers threatened national newspaper production, the Ministry of Labour appointed an independent chair to advise on discussions for a negotiated settlement in the printing strike. The twists and turns of this arrangement and the return to work are outlined.
Canteen Workers’ Wages and Collective-Bargaining Arrangements in British Coal
Authors: O’Donnell Kathy
Published: December 2023

This paper examines the rates of pay of female canteen workers employed by British Coal as compared to male employees, with a focus on the reasons for the existence and persistence of a wage differential of around 20%. Four sets of interrelated issues are addressed: first, the structure of collective pay bargaining in the coal industry and the formal and informal relationship between bargaining arrangements for female canteen workers and male mineworkers; second, the empirical evidence on relative pay levels and rates of change for female canteen workers and other British Coal employees; third, the structure and influence of the external labour market for canteen workers and its relation to the position of British Coal’s female canteen workers; and fourth, the role of gender in influencing the level of wage differential between female employees and male employees of British Coal. The conclusion is that gender difference seems to be the main explanatory factor for the remaining differences in pay and conditions that exist between female canteen workers and mineworkers.
Business Schools Rex: Warwick University Ltd
Authors: Parker Martin
Published: December 2023

On Wednesday 3 June 1970, Warwick University’s Board of Social Studies discussed a memorandum cautioning against the expansion of ‘business studies’ by John Rex, the recently arrived professor of sociology. Distinguishing industrial relations from business studies, he argued that the latter should not be taught as an undergraduate discipline. Coming so soon after the issue of the ‘Warwick Files’, Rex’s memorandum was delivered into a charged situation in which many students and staff had become profoundly disenchanted with the university’s management.

However, fifty years later the business school now dominates Warwick and almost all UK universities, being both its cash machine and its operating language. Industrial relations has been eclipsed as a field of enquiry but more important is the way that business and management practice now provides the operating language and governance of the university itself. It is now far too late to imagine that universities might have nothing to do with business, but there is an opportunity to radicalize what ‘business studies’ means. If we shut down the business school, then we must replace it with the School for Organizing, a place for studying how we rescue ourselves from carbon capitalism.
Geoprocessamento aplicado à análise de viabilidade para a concepção de um parque agrário no município de Pato Branco – PR
Authors: Marquesine Maria Fernanda De Faveri , Felipetto Henrique Dos Santos , Braga Luci Merhy Martins
Published: December 2023

Ao longo do tempo, o desenvolvimento de territórios vem sendo consumado por ocupações exclusivamente urbanas, que ocasionam, por vezes, a identificação de elementos que atestam a negligência do planejamento territorial mais adequado e descaracterizam os espaços e suas respectivas paisagens, principalmente no que diz respeito às extensões de confluência entre os meios rural e urbano. Para tanto, são propostos modelos de ordenação territorial que considerem todos os aspectos envolvidos na estruturação do território pensado através da ótica da sustentabilidade, capaz de promover a qualidade de vida dos indivíduos que a ele pertencem, como é o caso do modelo de parque agrário. Seguindo critérios da Arquitetura Rural em nível regional e valendo-se de técnicas de Geoprocessamento, a saber, manipulação de dados vetoriais, execução de algoritmos matriciais e álgebra de mapas com apoio à decisão através de Análise Hierárquica Multicritério, esta pesquisa apresenta uma análise de viabilidade para concepção de um parque agrário no município de Pato Branco, que está inserido na mesorregião Sudoeste do estado do Paraná, Brasil.
Um olhar sob a produção socioespacial de Pontal do Paraná a partir do turismo
Authors: Corbari Sandra Dalila , De Azevedo Natália Tavares
Published: December 2023

Pontal do Paraná tem um histórico de produção socioespacial diretamente relacionado à atividade turística, principalmente à balnearização com segundas residências. Esse fenômeno está atrelado ao setor imobiliário, que vem guiando a urbanização do município desde antes de sua emancipação, em 1995. Nesse sentido, o presente artigo teve como objetivo central identificar e analisar a produção socioespacial pelo turismo, em Pontal do Paraná e suas atuais implicações socioeconômicas e socioambientais. Para consecução do artigo, foi realizada uma pesquisa bibliográfica sobre espaço, território e territorialização do capital na zona costeira. Em relação à análise propriamente dita, ela foi realizada tendo como base de dados: i) revisão bibliográfica, utilizando como fontes livros, dissertações, teses e artigos científicos; ii) Pesquisa documental, tendo como fonte documentos legais, políticas públicas, publicações em jornais; e iii) entrevistas semiestruturadas com atores sociais de Pontal do Paraná. Verificou-se que o modelo de produção socioespacial de Pontal do Paraná privilegiou alguns agentes, enquanto parcela da população local sofreu o ônus, incluindo a desterritorialização. Ademais, o turismo transformou a localidade em uma “periferia do prazer” para a classe média curitibana e não ofereceu o desenvolvimento almejado pelos locais e, diante das mazelas sociais atuais, alguns atores sociais vislumbram uma “alternativa ao turismo”.
Análise de viabilidade de Incorporações Municipais na Região Norte Central Paranaense conforme a PEC 188/2019
Authors: Barcellos Marques Luis Henrique
Published: December 2023

A criação de municípios no Brasil, embora regulamentada pela Constituição, se configurou em um processo caracterizado pela busca por poder eleitoral e por mais recursos públicos. São 5.570 municípios pelo país, muitos dos quais não conseguem uma arrecadação relevante por meio dos próprios tributos, sendo extremamente dependentes de transferências intergovernamentais, como o Fundo de Participação dos Municípios. Neste contexto, a Proposta de Emenda Constitucional 188/2019, conhecida como a “PEC do Pacto Federativo” sugere a incorporação de municípios com arrecadação própria inferior a 10% de sua receita e população de até cinco mil habitantes, chamados municípios “incorporáveis”, a outro, limítrofe e financeiramente sustentável. Este artigo, por meio de pesquisa documental, de caráter quantitativo, tem o objetivo de verificar o impacto da aplicação deste mecanismo na mesorregião Norte Central Paranaense, formada por 79 municípios, dos quais 29 são incorporáveis. Nesta região, de acordo com os dados mais atuais, há 18 municípios potenciais incorporadores e, por meio da análise de indicadores fiscais, econômicos, educacionais, ambientais e de saúde, concluiu-se que a maioria destas incorporações tende a trazer mais impactos negativos para o município incorporador, o que sugere um cenário de dificuldades de cunho político/administrativo para a realização desta proposta.
Picking pearls from the Silk Road: Insights into the spider (Arachnida, Araneae) diversity in Georgia from the Caucasus Barcode of life project. Part II
Authors: Seropian Armen , Bulbulashvili Natalia , Otto Stefan , Krammer Hans-Joachim , Kachlishvili Nino , Datunashvili Anastasia
Published: December 2023

Abstract

Spiders collected during field trips and by spontaneous hand collection throughout Georgia between the years 2006 and 2023 were determined to species and partially assisted by genetic barcoding of the COI gene. Among the resulting 297 species, 100 species, 25 genera, and 1 family were recorded from Georgia for the first time, of which 18 species and 5 genera were recorded for the first time from the entire Caucasus. Of the 283 barcoded specimens representing 150 species, 26 were barcoded for the first time. 140 diagnostic drawings of 76 preserved specimens, along with photos of 15 preserved (Supplementary File) and one alive species, are provided. Baryphyma proclive (Simon, 1884), Pritha pallida (Kulczyński, 1897), and Zelotes khostensis Kovblyuk & Ponomarev, 2008 are indicated as the species with an Italo-Caucasian disjunctive distribution.
On Paleozoic platycerate gastropods
Authors: Nützel Alexander , Ebbestad Jan Ove , Seuss Barbara , Munnecke Axel , Mapes Royal H. , Cook Alex G.
Published: December 2023

The platycerate gastropods Orthonychia yutaroi Ebbestad, sp. nov. (Ordovician, Boda Limestone, Sweden), O. enorme (Silurian, Sweden, Gotland), O. parva (Pennsylvanian, Finis Shale Member, USA), and Orthonychia sp. (Mississippian, Imo Formation, USA) are studied including their protoconch morphology. Orthonychia yutaroi is the oldest known species in Orthonychia. Platycerates contain species with both, openly and tightly coiled protoconchs. This is the first report that tightly coiled protoconchs occur in Orthonychia. This and previously published observations blur the diagnostic difference between orders Cyrtoneritimorpha (openly coiled protoconch) and Cycloneritimorpha (tightly coiled protoconch). We suggest to treat Cyrtoneritimorpha and Cycloneritimorpha as synonyms of Neritimorpha. The monotypic Devonian genus Pragoserpulina is morphological so close to the Orthonychia species reported herein that synonymy of both genera seems to be possible (and thus of the families Pragoserpulinidae and Orthonychiidae). Protoconch morphology and dimensions suggest that the studied platycerate species had planktotrophic larval development. By contrast, two studied Carboniferous euomphaloid species (one with an openly and the other with tightly coiled protoconch) have paucispiral, large protoconchs indicating non-planktotrophic larval development. We assume that openly and tightly coiled protoconchs were present in various Paleozoic gastropod clades and that selection acted against the openly coiled protoconch morphology. It has previously been proposed that increasing predation pressure in the plankton was the reason for the demise of openly coiled protoconchs (Paleozoic plankton revolution). The presence of larval planktotrophy in platycerates excludes the possibility that they belong to extant basal gastropod clades such as Patellogastropoda, Cocculiniformia, and Vetigastropoda. However, a previously proposed close relationship to Neritimorpha is corroborated.
The tropiduchid planthopper genus Connelicita Wang & Bourgoin, 2015: two new species from Central Vietnam and new records (Hemiptera, Fulgoromorpha, Tropiduchidae)
Authors: Constant Jérôme , Pham Thai-Hong , Le Cuong Viet Canh , Vu Trung Thanh , Nguyen Hoai Thu Thi
Published: December 2023

Two new planthopper species of the tropiduchid genus Connelicita Wang & Bourgoin, 2015, C. bachmaensis Constant & Pham, sp. nov., and C. phongdienensis Constant & Pham, sp. nov. are described from Bach Ma National Park and from the Centre for Conservation of Vietnam Natural Resources and Rescue of Animals and plants, Phong Dien District in Thua Thien-Hue Province, respectively. These new records greatly extend the distribution of the genus, which was known from southern China (Guangxi) and North Vietnam, to the south, reaching the mid area of Central Vietnam. New records are provided for C. haiphongensis Wang & Zhang, 2015, extending the distribution of the species from Cat Ba Island to a large zone in North Vietnam. Illustrations of habitus, details, and male genitalia are given as well as a distribution map and photographs of the habitat. An identification key to the species of Vietnam is provided. The genus Connelicita now comprises five species.
A note on closed vector fields
Authors: Turki Nasser Bin , Deshmukh Sharief , Belova Olga
Published: December 2023

Special vector fields, such as conformal vector fields and Killing vector fields, are commonly used in studying the geometry of a Riemannian manifold. Though there are Riemannian manifolds, which do not admit certain conformal vector fields or certain Killing vector fields, respectively. Closed vector fields exist in abundance on each Riemannian manifold. In this paper, we used closed vector fields to study the geometry of the Riemannian manifold. In the first result, we showed that a compact Riemannian manifold $ (M^{n}, g) $ admits a closed vector field $\boldsymbol{\omega }$ with $ \mathrm{div} \boldsymbol{\omega }$ non-constant and an eigenvector of the rough Laplace operator, the integral of the Ricci curvature $ Ric(\boldsymbol{\omega }, \boldsymbol{\omega }) $ has a suitable lower bound that is necessarily isometric to $ S^{n}(c) $ and that the converse holds. In the other result, we found a characterization of an Euclidean space using a closed vector field $\boldsymbol{\omega }$ with non-constant length that annihilates the rough Laplace operator and squared length of its covariant derivative that has a suitable upper bound. Finally, we used the closed vector field provided by the gradient of the non-trivial solution of the Fischer-Marsden equation on a complete and simply connected Riemannian manifold $ (M, g) $ and showed that it is necessary and sufficient for $ (M, g) $ to be isometric to a sphere and that the squared length of the covariant derivative of this closed vector field has a suitable upper bound.
Graphs that embedded in any fixed surfaces with sufficiently large maximum degree $ \Delta $ is total-$ (\Delta +1) $-colorable
Authors: Fang Qiming , Zhang Li
Published: December 2023

Let $ G $ be a graph that can be embedded in a surface $ \Sigma $ of Euler characteristic $ c'(\Sigma) $. In this paper, we proved that there exists an integer $ \Delta_0 = 4\cdot (5+\sqrt{49-24c'})\cdot [2-c'+\frac{1}{2} (5+\sqrt{49-24c'})] $ such that the total chromatic number of $ G $ is $ \Delta(G) +1 $ if $ \Delta(G) \geq \Delta_0 $.
Intrusion detection in the IoT data streams using concept drift localization
Authors: Chu Renjie , Jin Peiyuan , Qiao Hanli , Feng Quanxi
Published: December 2023

With the widespread application of smart devices, the security of internet of things (IoT) systems faces entirely new challenges. The IoT data stream operates in a non-stationary, dynamic environment, making it prone to concept drift. This paper focused on addressing the issue of concept drift in data streams, with a key emphasis on introducing an innovative drift detection method-ensemble multiple non-parametric concept localization detectors, abbreviated as EMNCD. EMNCD employs an ensemble of non-parametric statistical methods, including the Kolmogorov-Smirnov, Wilcoxon rank sum and Mann-Kendall tests. By comparing sample distributions within a sliding window, EMNCD accurately detects concept drift, achieving precise localization of drift points, and enhancing overall detection reliability. Experimental results demonstrated the superior performance of EMNCD compared to classical methods on artificial datasets. Simultaneously, to enhance the robustness of data stream processing, we presented an online anomaly detection method based on the isolation forest (iForest). Additionally, we proposedwhale optimization algorithm (WOA)-extreme gradient boosting (XGBoost), a drift adaptation model employing XGBoost as a base classifier. This model dynamically updates using drift points detected by EMNCD and fine-tunes parameters through the WOA. Real-world applications on the edge-industrial IoTset (IIoTset) intrusion dataset explore the impact of concept drift on intrusion detection, where IIoT is a subclass of IoT. In summary, this paper focused on EMNCD, introducing innovative approaches for drift detection, anomaly detection, and drift adaptation. The research provided practical and viable solutions to address concept drift in data streams, enhancing security in IoT systems.
Research on fatigue vulnerable details of cross beam joints after reinforcement for steel truss bridges
Authors: Jinhua Tan , Youwei Jiang , Yueguang Li , Yang Liu
Published: December 2023

In this research, fatigue tests on full-size specimens are conducted for a steel cross-beam joint before and after reinforcement. Combined with a three-dimensional (3D) numerical simulation, the 3D stress parameters, and their redistribution rules study anew with a web crack and new crack initiation locations and fatigue weakness details are predicted. The research results include the following: 1) The empirical formula parameter m of the Z-axis stress for the new crack tip is approximately 0.05. 2) The fatigue performance of the web’s new crack tips is significantly improved by bolting reinforced steel plates, the stress range is reduced by 60%-98.78%, and the original crack stops growing in size. The health monitoring system can choose the predicted weak details as valid monitoring points so that the fatigue damage can be intelligently perceived after the reinforcement of steel bridges.
La trama aristotélica de Tocqueville: una exploración de los efectos conductuales del despotismo
Authors: Presta Francisco
Published: December 2023

El presente trabajo pretende demostrar que la categoría despotismo analizada por Tocqueville afecta principalmente a la subjetividad y no a la lógica social de la democracia moderna. Para demostrar esta premisa, se explora la influencia de la filosofía política aristotélica en la psicología moral del autor francés, para mostrar que los atributos empíricos de esta conexión permiten constatar una concepción «asentida» de despotismo que condiciona el comportamiento, en detrimento de interpretaciones que abogan por una exclusiva congruencia estructural de sus efectos.
Drying of Industrial Sanitary Ware at Low Temperature: A Theoretical and Experimental Investigation
Authors: Soares Gomez Ricardo , Gomes Kelly Cristiane , Alves de Matos Gurgel José Maurício , França da Silva Fabio Emanuel , Belizário Alves Laís , Luma Fernandes Magalhães Hortência , de Lima Antonio Gilson Barbosa
Published: December 2023

Sanitary ware, including toilets, washbasins, and bathtub, plays a crucial role in maintaining hygiene and sanitation in various settings. The drying process is a critical stage in the manufacturing of ceramic sanitary ware, as it influences product quality, production efficiency, and energy consumption. Then, the purpose of this work is to investigate the drying of sanitary ware at low temperature by experiments and empirical mathematical models. The idea is to accurately predict moisture loss of the ceramic parts under different operational conditions. Results of the drying kinetics have shown that higher temperatures and lower air relative humidity accelerate the drying process. Also, no cracks or fissures were observed as a result of drying sanitary ware at low temperatures and the two-term model provides the best fit for the dimensionless average moisture content as a function of the time. These findings contribute to a better understanding of the drying process and support the optimization of sanitary ware manufacturing.
Numerical Modeling and Simulation of Microstructure Evolution during Solid-State Sintering: Multiphysics Approach
Authors: Cumbunga Judice , Abboudi Said , Chamoret Dominique
Published: December 2023

A multiphysics numerical approach based on a coupling of heat conduction equation, mechanical field (effect of gravity), and phase-field equations is proposed as an alternative to predict the microstructure evolution of 316L stainless steel during the pressureless solid-state sintering process. In this context, a numerical model based on the finite element method has shown to be suitable for evaluating the impact of the thermal field, as the activation force of the sintering process, on the microstructure field evolution and, in turn, the impact of the evolution of phase field variables on the material properties. The model was validated by comparison with literature results and applied to simulate the microstructure evolution for different sintering temperatures and particle sizes to evaluate the influence of these parameters on microstructure evolution. The results proved that model can be used to analyze the microstructure evolution, both from a quantitative and quality point of view, which makes it suitable for evaluating the impact of sintering parameters on material properties.
A Study of Annealing Effects on the Joints of a Rotary Friction Welds of AISI 1030 Steel
Authors: Trung Pham Quang , Khanh Bui Duy , Qui Dao Duy
Published: December 2023

This study is concerned with the post-heat treatment of rotational friction welds. AISI 1030 carbon steel parts are welded by rotational friction welding (RFW). The welding process parameters include friction pressure (P1), friction time (T1); Forging pressure (P2), forging time (T2). During the friction phase, the rotational speed is 1450 rpm; after that, the welding parts is stopped immediately and pressed together. The weld samples will be annealed at 650 °C for 4 hours. The change in the properties of the material of a RFW weld joint such as hardness, tensile strength, bending strength as well as grain size when undergone a heat treatment process was investigated. The obtained results show that the annealing process strongly changes the mechanical properties through altering the microstructure of the weld. Particularly, the weld hardness and tensile strength decrease significantly while the bending strength and elongation increase as a result of the increase in grain size and uniformity of the phase distribution. The annealed weld has a hardness reduction of nearly 20% and a tensile strength reduction of about 24% compared to the original weld. The elongation in the tensile test increases from 1.1% for weld specimens to 2.54% for post-heat-treated welds. In the bending test, the maximum load before the appearance of cracks on the specimen increased by about 42% when comparing the post-heat and original weld specimens.
Laboratory Tests of Low-Strength Mortars for Precast Concrete Buildings Designed for Disassembly
Authors: Halding Philip Skov
Published: December 2023

Direct reuse of precast concrete elements is possible if disassembly is considered in the design phase. An unusual way of designing for disassembly is to use “wet” joints as usual but to optimise the mortar to be less strong and, therefore, easier to remove at the end of the life of the building. A method is presented to test mortars with lime content to determine the shear capacity in the connection between mortar and concrete. Tests are performed with and without an applied normal force and with and without steel bars through the interface. The results show that applying a lime content to the mortar reduces the compressive strength, shear strength and flexural strength. Using steel bars in the connections increases the ductility from less than 1 mm to several mm at the point of failure. The results can be used in future checks of mortar joints in buildings, where it is required to have a minimum strength during the service life and a maximum strength when dismantling. The future mortar requirements will depend on the disassembly method.
Selective Metallization on 3D Substrates for MIMO Antennae
Authors: Lu Man Ning , Chou Min Chieh , Kao Tune Hune , Huang Meng Chi , Hsiao Fu Ren , Tseng I Wei
Published: December 2023

Multiple-input multiple-output (MIMO) antenna technology owes its low weight and energy-saving electronic applications to the use of polymer substrates. Applying metallization to obtain conductive substrates involves spraying untreated molds with a gel to form a temporary protective coating. The coating is then partially removed with a laser to expose areas for metallization. After that, the exposed areas are modified with a palladium-tin (Pd-Sn) colloidal catalyst to enhance the adhesion between the insulating surface and copper deposition. It’s with these three steps that the modified areas become selective to metallization. It’s observed that copper deposited incessantly at a high speed of 5 μm/hr after above treatment, and formed a dense layer with a low resistivity. The conductive patterns plated on the 3D substrate render the MIMO antenna system applicable to wireless local area network (WLAN) with two switchable frequencies, as evidenced by the simulation tests in which the antennae had ECC values below 0.2, a VSWR of 3 to 1, and a radiation efficiency around 50% at 2.4 GHz and 37% at 5.8 GHz. The electroless plating technology used above adds to a duplicable MIMO-antenna manufacturing process of low temperature and cost.
Management of leukocytoclastic vasculitis through Ayurvedic principles
Authors: Savalagimath Mahesh P , Bayari Varuni S , Jiddannavar Arun B
Published: December 2023

Leukocytoclastic vasculitis (LCV) is an inflammation of vessels caused by bites, autoimmunity, allergies, and idiopathic reasons. A 10-year-old girl was previously diagnosed with LCV, and with conventional medicine, found with no satisfactory response approached for further management through Ayurveda medication. The Ayurveda diagnosis of the case was Pittaja Keeta Visha (toxic insect bite vitiating Pitta) with an evident history of ant bites. She was treated with Shamanoushadhis (oral palliative medicines) and medicated oil for external application for over 40 days, and complete relief was seen. Oil for application continued further over 3 months by considering the relapsing nature of the condition. There was no recurrence, and normal skin tone was obtained. This case study shows that effective management of LCV can be done using an Ayurveda management line.
Quantitative bounds for Gowers uniformity of the Möbius and von Mangoldt functions
Authors: Tao Terence , Teräväinen Joni
Published: December 2023

We establish quantitative bounds on the

U^{k}[N]

Gowers norms of the Möbius function 

\mu

and the von Mangoldt function

\Lambda

for all

k

, with error terms of the shape

O((\log\log N)^{-c})

. As a consequence, we obtain quantitative bounds for the number of solutions to any linear system of equations of finite complexity in the primes, with the same shape of error terms. We also obtain the first quantitative bounds on the size of sets containing no

k

-term arithmetic progressions with shifted prime difference.