bluuebunny/crossref_metadata_2025 huggingface dataset:
Flag-Transitive, Point-Imprimitive 2-Designs and Direct Products of Symmetric Groups
Authors: Chen Jianfu , Zhou Shenglin , Shen Jiaxin
Published: April 2024

Consider the direct product of symmetric groups $S_c\times S_n$ and its natural action on $\mathcal{P}=C\times N$, where $|C|=c$ and $|N|=n$. We characterize the structure of 2-designs with point set $\mathcal{P}$ admitting flag-transitive, point-imprimitive automorphism groups $H\leq S_c\times S_n$. As an example of its applications, we show that $H$ cannot be any subgroup of $D_{2c}\times S_n$ or $S_c\times D_{2n}$. Besides, some families of 2-designs admitting flag-transitive automorphism groups $S_c\times S_n$ are constructed by using complete bipartite graphs and cycles. Two families of these also admit flag-transitive, point-primitive automorphism groups $S_c\wr S_2,$ a family of which attain the Cameron-Praeger upper bound $v=(k-2)^2$.
Robinson-Schensted-Knuth Superinsertion and Super Frobenius Formulae
Authors: Zhao Deke
Published: April 2024

In this paper we extend the Robinson-Schensted-Knuth (RSK) superinsertion algorithm to hook-multipartitions and derive the super Frobenius formula for the characters of cyclotomic Hecke algebras via the RSK superinsertion algorithm. As a corollary, we obtain a new proof of Mitsuhashi's super Frobenius formula for the characters of Iwahori-Hecke algebras.
Hamilton Cycles in the Line Graph of a Random Hypergraph
Authors: Rybarczyk Katarzyna
Published: April 2024

We establish the threshold function for the property that the line graph of a random $r$-uniform hypergraph has a Hamilton cycle. The main result gives also the threshold function for Hamiltonicity of uniform random intersection graphs with a bounded number of attributes assigned to each vertex. The problem is closely related to Berge Hamilton cycles in random $r$-uniform hypergraphs.
The $k$-XORSAT Threshold Revisited
Authors: Coja-Oghlan Amin , Kang Mihyun , Krieg Lena , Rolvien Maurice
Published: April 2024

We provide a simplified proof of the random $k$-XORSAT satisfiability threshold theorem. As an extension we also determine the full rank threshold for sparse random matrices over finite fields with precisely $k$ non-zero entries per row. This complements a result from [Ayre, Coja-Oghlan, Gao, Müller, Combinatorica, 2020]. The proof combines physics-inspired message passing arguments with a surgical moment computation.
Improved Bounds for Cross-Sperner Systems
Authors: Behague Natalie , Kuperus Akina , Morrison Natasha , Wright Ashna
Published: April 2024

A collection of families $(\mathcal{F}_{1}, \mathcal{F}_{2} , \cdots , \mathcal{F}_{k}) \in \mathcal{P}([n])^k$ is cross-Sperner if there is no pair $i \not= j$ for which some $F_i \in \mathcal{F}_i$ is comparable to some $F_j \in \mathcal{F}_j$. Two natural measures of the 'size' of such a family are the sum $\sum_{i = 1}^k |\mathcal{F}_i|$ and the product $\prod_{i = 1}^k |\mathcal{F}_i|$. We prove new upper and lower bounds on both of these measures for general $n$ and $k \ge 2$ which improve considerably on the previous best bounds. In particular, we construct a rich family of counterexamples to a conjecture of Gerbner, Lemons, Palmer, Patkós, and Szécsi from 2011.
A Remark on Continued Fractions for Permutations and D-Permutations with a Weight -1 per Cycle
Authors: Deb Bishal , Sokal Alan D.
Published: April 2024

We show that very simple continued fractions can be obtained for the ordinary generating functions enumerating permutations or D-permutations with a large number of independent statistics, when each cycle is given a weight $-1$. The proof is based on a simple lemma relating the number of cycles modulo 2 to the numbers of fixed points, cycle peaks (or cycle valleys), and crossings.
Hardinian Arrays
Authors: Dougherty-Bliss Robert , Kauers Manuel
Published: April 2024

In 2014, R.H. Hardin contributed a family of sequences about king-moves on an array to the On-Line Encyclopedia of Integer Sequences (OEIS). The sequences were recently noticed in an automated search of the OEIS by Kauers and Koutschan, who conjectured a recurrence for one of them. We prove their conjecture as well as some older conjectures stated in the OEIS entries. We also have some new conjectures for the asymptotics of Hardin's sequences.
Proof of a Conjecture of Nath and Sellers on Simultaneous Core Partitions
Authors: Sha Yetong , Xiong Huan
Published: April 2024

In 2016, Nath and Sellers proposed a conjecture regarding the precise largest size of ${(s,ms-1,ms+1)}$-core partitions. In this paper, we prove their conjecture. One of the key techniques in our proof is to introduce and study the properties of generalized-$\beta$-sets, which extend the concept of $\beta$-sets for core partitions. Our results can be interpreted as a generalization of the well-known result of Yang, Zhong, and Zhou concerning the largest size of $(s,s+1,s+2)$-core partitions.
Line-Transitive Point-Imprimitive Linear Spaces with Fang-Li Parameter gcd$(k,r)$ at most $12$
Authors: Hao Wenya , Guan Haiyan , Wang Yajie
Published: April 2024

This paper investigates the finite line-transitive point-imprimitive linear spaces. Let $S$ be a non-trivial finite line-transitive point-imprimitive linear space with the Fang-Li parameter $k^{(r)}=11$ or $12$. Our conclusion is that $\mathcal{S}$ is a Desarguesian projective plane PG(2,11).
Optimization Process by Generalized Genetic Algorithm
Authors: Zemliak Alexander , Osadchuk Andrei , Serrano Christian
Published: April 2024

The approach developed earlier, based on generalized optimization, was successfully applied to the problem of designing electronic circuits using deterministic optimization methods. In this paper, a similar approach is extended to the problem of optimizing electronic circuits using a genetic algorithm (GA) as the main optimization method. The fundamental element of generalized optimization is an artificially introduced control vector that generates many different strategies within the optimization process and determines the number of independent variables of the optimization problem, as well as the length and structure of chromosomes in the GA. In this case, the GA forms a set of populations defined by a fitness function specified in different ways depending on the strategy chosen within the framework of the idea of generalized optimization. The control vector allows you to generate different strategies, as well as build composite strategies that significantly increase the accuracy of the resulting solution. This, in turn, makes it possible to reduce the number of generations required during the operation of the GA and reduce the processor time by 3–5 orders of magnitude when solving the circuit optimization problem compared to the traditional GA. An analysis of the optimization procedure for some electronic circuits showed the effectiveness of this approach. The obtained results prove that the applied modification of the GA makes it possible to overcome premature convergence and increase the minimization accuracy by 3-4 orders of magnitude.
The benefits of social media as a modern teaching and learning tool in higher education in Indonesia
Authors: Martunis Martunis
Published: April 2024

This paper explores the benefits of social media for assisting teaching process in higher education institution in Indonesia. The paper also looks at the ways of using social media such as Facebook, Twitter, and WeChat. As the continuous growing of social platforms, most students and teachers in higher education level are now interacting through social media. The opportunities to utilize them as teaching and learning tools are endless. This paper reveals that the use of social media had positive outputs towards teaching and learning. However, social media also comes with some challenges which may limit its effectiveness. Thus, some possible solutions will be presented here in order to make the most out of social media for teaching and learning.
Character analysis of Erin Gruwell from �Freedom Writers�
Authors: Sarair Sarair , Apriliani Apriliani , Farsia Lina
Published: April 2024

This study analyzed Erin Gruwell, a character from the movie Freedom Writers. The goals of this study were to explore Erin Gruwells personality, examine her salient traits, and learn interesting information about her. This study used a descriptive method and employed qualitative research. Data were examined by viewing the movie scenes and comprehending the movie script. The characters of Erin could be categorized into one of eight groups depending on their personalities and roles: protagonist, antagonist, underdog, sidekick, round, flat, static, and dynamic. In terms of roles and personalities, Erin Gruwell, the protagonist, had two different types of characters: protagonist and round. There were three distinct categories of characteristics: psychotism, extraversion, and neuroticism. The findings revealed that extraversion was the key quality of Erin Gruwell. In addition, Erin Gruwell also had intriguing behaviors, attitudes, and habits based on her personality and role.
Statistical Assessment of Primary Health Care Services on the Health Status of Rural Communities in Federal Capital Territory, Nigeria
Authors: Omodele Omole Omotayo , Unekwu Adehi Mary , Joshua Ayodele Oluwasola , Oyinloye Adedeji Adigun
Published: April 2024

This paper investigated the statistical assessment of primary health care services on the health status of rural communities in Federal Capital Territory, Nigeria. The need for this paper was rural communities often have limited access to healthcare resources, which can lead to disparities in health outcomes and also place a strain on healthcare systems. This study employed quantitative research methodology in two recent secondary data. Thirteen and sixty-two Primary Health Care (PHCs) were used in the study respectively. The study also employed descriptive statistics and statistical test such as t-test and chi-square test to analyze the data collected. The result further showed that of the 62 PHCs visited 89% had good infrastructures, 26% had sufficient personnel and 85% had good service delivery. Therefore, it is recommended that there should be a need to improve on the workforce to meet the minimum standard for primary health care in Nigeria as well as regular monitoring and evaluation to assess the performances of the PHCs in FCT.
Relación entre Factores de Carga Laboral y Accidentes Ocupacionales del Personal de Enfermería
Authors: Tituana Cordova Esthela Lizbeth , Rojas Gonzalez Heidy Angie , Almache Delgado Veronica Jacqueline
Published: April 2024

La función del personal de enfermería es esencial en la entrega de servicios de salud, desempeñando un papel crucial en la atención y el bienestar de los pacientes. Materiales y métodos: Se usó un enfoque cuantitativo y descriptivo, se utilizó el coeficiente Alfa de Cronbach con una muestra de 81 profesionales, dio como resultado de 0,625 el cual es aceptable para la investigación. Resultados: Se obtuvieron el 64,3% (31 a 41 años de edad), 55,5% (6 a 10 años de experiencia laboral), 85,2% licenciados/as en Enfermería, en relación a la evaluación de la carga laboral 43,2% complejidad, 39,5 horas extras, 35,8 personal insuficiente, 54,3 descanso durante la jornada laboral; Evaluación de la incidencia de accidentes ocupacionales 45,7 ha experimentado, 49,4 fatiga laboral, 4,9% capacitación; carga mental 40,7% requiere concentración, 42% es agotador. Conclusión: Una proporción significativa de profesionales de enfermería experimenta una carga mental considerable, con un alto nivel de concentración requerido y un notable agotamiento mental al final de la jornada laboral.
«ЕЩЕ НЕ РУССКИЕ И УЖЕ НЕ МАРИЙЦЫ»: ОБ ЭТНИЧЕСКОЙ ИДЕНТИЧНОСТИ, ЯЗЫКЕ И КУЛЬТУРЕ КИРОВСКИХ МАРИЙЦЕВ (ПО РЕЗУЛЬТАТАМ ОБСЛЕДОВАНИЯ В МАРИЙСКОЙ ДИАСПОРЕ МОСКОВСКОГО РЕГИОНА)
Authors: Куцаева Марина Васильевна
Published: April 2024

Статья посвящена актуальным вопросам этнической идентичности, языка и культуры кировских марийцев, проживающих в настоящее время в Москве и Московской области. Материалы основаны на результатах социолингвистического обследования, проведенного автором в марийской диаспоре московского региона в 2019–2021 гг. в целях выявления и описания функционирования этнического языка в условиях внутренней диаспоры. Одной из представленных в обследовании этнолокальных групп являются кировские марийцы. В работе изучаются языковые биографии респондентов: языки дошкольного воспитания, языки школьного обучения и преподавания, языки внутрисемейного общения, язык общения с соседями, каналы освоения участниками опроса марийского и русского языков, преподавание марийского языка в системе школьного образования в Кировской области. Кроме того, затрагивается проблема актуального употребления респондентами этнического языка в московском регионе: установлены сферы использования языка, определены функции марийского языка, рассмотрен вопрос новых носителей марийского языка. В статье приводится сопоставительный анализ результатов с данными, полученными автором относительно представителей других этнолокальных групп марийцев в выборке – луговых и горных, а также уральских и башкирских марийцев.
АЗЕРБАЙДЖАНСКИЙ ЯЗЫК В МОСКОВСКОЙ ОБЩИНЕ АЗЕРБАЙДЖАНЦЕВ: СИМВОЛИЧЕСКИЕ ПАРАМЕТРЫ ЯЗЫКОВОЙ СИТУАЦИИ В СОПРЯЖЕНИИ С СОЦИОДЕМОГРАФИЧЕСКИМИ ФАКТОРАМИ
Authors: Москвичева Светлана Алексеевна , Гасанов Маммадали Магсад оглы
Published: April 2024

Статья посвящена анализу параметров символического измерения языковой ситуации в условиях миграции. В центре проблематики стоит оценка представителями азербайджанской общины четырех типов репрезентаций, связанных с азербайджанским языком: различия в азербайджанском языке, используемом представителями общины в Москве, и азербайджанским языком в Азербайджане (срез структуры языка), важность азербайджанского языка в семейном и профессиональном общении (коммуникативный срез), представления об азербайджанском языке как родном (срез идентичности) и представления об азербайджанском языке как престижном языке публичного общения (социальный срез). В основе исследования лежит метод анкетирования с последующей статистической обработкой данных в программе Jamovi (Х-квадрат Пирсона) и их интерпретацией и анализом. Вышеперечисленные типы репрезентаций были рассмотрены в сопряжении с социодемографическими факторами возраста респондентов, планами остаться/уехать из Российской Федерации, местом проживания родителей (Россия или Азербайджан). Значимость сопряжения двух независимых категориальных переменных определялась Х-квадратом Пирсона. Исследование показало, что ведущую роль в структуре языковых репрезентаций представителей азербайджанской общины Москвы играют жизненные планы респондентов и место проживания их родителей, т.е. факторы, связанные с теоретическими конструктами языка и территории.
СТРУКТУРА ИДИОМОВ СЕТО В СВЕТЕ СОЦИОЛИНГВИСТИЧЕСКИХ ДАННЫХ
Authors: Агранат Татьяна Борисовна , Орлов Владислав Андреевич
Published: April 2024

В статье дается краткий обзор истории переселения части этнических сето на рубеже XIX–XX вв. из мест их исконного проживания в Сибирь по столыпинской аграрной реформе. Представлены сведения о печорских и красноярских сето, полученные авторами в ходе социолингвистического обследования. Кроме проведения социолингвистических исследований, авторами в экспедициях 2019–2021 гг. собирался и собственно языковой материал как в местах исконного проживания, в Печорском районе Псковской области, так и в сибирской диаспоре. В статье в контексте социолингвистики прослеживается изменение способов выражения грамматических значений кондиционалиса в диаспоре и в местах исконного расселения. Несмотря на то, что до самого последнего времени идиом сето оставался бесписьменным, в 1926 г. на него было переведено Евангелие. Это важный памятник, отражающий синхронный срез языка начала XX в., который позволяет проследить пути развития идиомов при полном отсутствии контактов. Поскольку не было письменности и, соответственно, не было единого нормированного языка, в Сибири и в Псковской области языковые изменения происходили независимо друг от друга.
Mathematical Modeling of The Transmission Dynamics of Monkeypox with the Impact of Quarantine and Public Enlightenment in Nigeria
Authors: Onitilo Sefiu , Ajanı Abiodun , Danıel Deborah , Haruna Ayobami
Published: April 2024

Monkeypox remains a public health concern in Nigeria, with periodic outbreaks reported. Despite efforts to control the disease, the number of reported cases continues to rise. Understanding the transmission dynamics of monkeypox and predicting its future spread can inform public health decision-making and guide the allocation of resources for control efforts. Hence, in this study, a deterministic model for the transmission dynamics of Monkeypox in the presence of quarantine and public enlightenment is presented. The model analysis involving the Disease Free Equilibrium (DFE) is established. Numerical simulations were used to better investigate the impact of quarantine and public enlightenment on human population. The results revealed that the effectiveness of the combined form of public awareness and quarantine produced more results followed by the effectiveness of public awareness alone, and then the result achieved when infected individuals are quarantined. If the measures were implemented with a greater degree of integration, there would be a significant reduction in the viral peak, thereby preventing its persistence within the human population.
ANALISIS PENALARAN KUANTITATIF SISWA SEKOLAH MENENGAH PERTAMA (SMP) BERDASARKAN KATEGORISASI DWYER
Authors: RACHMATIKA FAJRIYAH , DEVI FITRIANA LINDA
Published: April 2024

Penalaran kuantitatif merupakan salah satu penalaran yang harus dipelajari oleh siswa karena dengan mengembangkan penalaran kuantitatif dapat meningkatkan kemampuan siswa dalam memahami dan memecahkan masalah sehari-hari, number sense, perhitungan mental, dan menemukan solusi dari masalah. Penelitian ini menggunakan metode penelitian kualitatif deskriptif, dan bertujuan untuk mendeskripsikan penalaran kuantitatif berdasarkan kategorisasi dari Dwyer yang mencakup sembilan kemampuan fundamental penalaran kuantitatif. Enam siswa dengan kemampuan matematika tinggi, sedang, dan rendah diminta untuk memecahkan masalah matematika dan kemudian diwawancarai. Secara umum, hasil penelitian menunjukkan adanya perbedaan penalaran kuantitatif di antara berbagai kemampuan matematis. Siswa dengan kemampuan matematika tinggi mampu menunjukkan 9 kemampuan penalaran kuantitatif yang terdiri dari menyajikan informasi yang diketahui dan ditanyakan dalam berbagai bentuk, menunjukkan hubungan antar informasi kuantitatif, menarik kesimpulan berdasarkan hasil interpretasi, menentukan dan menerapkan metode aritmatika, aljabar, geometri, atau statistic, mengestimasi jawaban, memeriksa jawaban dan menyadari terjadi kesalahan dalam proses pemecahan masalah, memaparkan seluruh informasi kuantitatif, dan menunjukkan keterbatasan metode matematis yang digunakan. Sedangkan untuk siswa dengan kemampuan matematika sedang hanya memenuhi 7 kemampuan dan siswa dengan kemampuan rendah hanya bisa menunjukkan 3 dari 9 kemampuan penalaran kuantitatif. Diharapkan dengan mengetahui penalaran kuantitatif siswa, guru dapat memberikan pembelajaran yang tepat sehingga pembelajaran yang diberikan kepada siswa lebih optimal.
Az intézkedéstaktikai képzés kompetenciafejlesztő hatásával kapcsolatos hallgatói percepciók kvantitatív vizsgálata a pénzügyőrök körében
Authors: Erdős Ákos , Christián László , Szabó Andrea
Published: April 2024

Aim: The aim of the study was to investigate students’ perceptions of the competence development impact of the new use-of-force training system. In this study, the authors measured the impact of use-of-force training courses on the law enforcement competencies most relevant to the use of measures and force, namely decision-making ability, problem-solving ability, responsibility, situational awareness and perception, psychological resilience, communication skills and autonomy.Methodology: In 2023, a quantitative survey was conducted among the customs officer cadets at the Faculty of Law Enforcement of University of Public Service. To achieve the research objective, the authors used a self-compiled, seven-factor, twenty-one-item competency development rating subjective perception scale (C-SPS) to measure students’ subjective perceptions of the competence development impact of use-of-force training. 64.0% of the study sample (n = 100) was male. The mean age of respondents was 20.94 years (SD = 1.31, 95% CI: 20.67–21.20). The majority of respondents (75.0%) do not take part in use-of-force type activities in their leisure time.Findings: Students percept the highest development in the areas of use-of-force related responsibility (M = 4.54; SD = 0.70; 95% CI: 4.39–4.68), decision-making ability (M = 4.51; SD = 0.64; 95% CI: 4.38–4.64) and problem solving (M = 4.41; SD = 0.73; 95% CI: 4.26–4.55). There are no significant differences in students’ perceptions of the impact of training on competence development, neither by gender nor by specialisation. However, participation in leisure thematic activities is strongly associated with perceptions of the greater competence-developing impact of the compulsory course in use-of-force.Value: The research provides an unique insight into the effectiveness of Hungarian use-of-force training. To the authors’ knowledge, no similar study has been conducted in Hungary.
Challenges in investigating self-generated online child sexual abuse material
Authors: Meggyesfalvi Boglárka
Published: April 2024

Aim: The overall aim of this paper is to offer a greater understanding of the context of children’s online sexual behaviour through exploring what are some of the main challenges the police encounter when investigating digital content of a sexual nature produced by young people, such as photographs, videos and chat messages.Methodology: The research is primarily reviewing and analysing academic literature, policy papers, legal sources and statistical data. The main areas examined include the increasing prevalence of self-generated child sexual abuse material (CSAM), how contemporary peer-to-peer relations amongst children impact the self-production of sexual material, and how creating sexual content online for commercial reasons and the development of digital technologies add to the complexity and ambiguities of investigations.Findings: Findings in this paper highlight that law enforcement alone will not be able to manage all the challenges that online child sexual abuse crimes imply on society and children in particular. They will need clear guidelines to differentiate between children’s harmful and healthy online sexual behaviour and up-to-date knowledge on how to avoid the unnecessary victimisation of children.Value: This paper promotes a more nuanced understanding of the complex phenomenon of children self-generating explicit content, which is often embedded within wider societal issues of peer-to-peer relations, financial deprivation and technological advancement. As a result, we will be able to better protect young people, distinguishing between adolescents’ healthy and harmful online sexual behaviours, so resources can be prioritised and interventions carried out when authority is needed, avoiding the unnecessary criminalisation of children.
Arduino-Based Alcohol Detection Device: Enhancing Safety in Vehicle Operation through Sensor Technology
Authors: Hariharan S.  , Barath S.  , Monica R.  , Madhumitha R.
Published: April 2024

In this context, an Arduino-based alcohol detector is an example of a device that has the potential to detect the presence of alcohol in the surrounding environment. It is possible to use this tool to check the results of individuals who have drank alcohol while operating a motor vehicle. A MQ-3 alcohol sensor is utilized by the device in order to ascertain whether or not alcohol is readily available. The component that constitutes the sensor is the component that heats the layer of conducting material while simultaneously measuring the resistance of the substrate. There is a change in the resistance of the MQ-3 sensor whenever it is subjected to scents or vapors of alcohol. Signals of both digital and analogue types can be obtained from the sensor. A distinction can be made between the two in a very plain way. There are only two conceivable states that digital output can take while communicating with a microcontroller. These states are high and low, which means that they represent the values 1 and 0, respectively. An analog signal, on the other hand, is received by the microcontroller, and it provides an indication of the amount of alcohol present in the environment by utilizing a wide range of values, ranging from 0 to 1023. An LED, a MQ-3 alcohol sensor, and an Arduino Uno are two of the components that are required to construct the device. In confined areas or for showing straightforward applications on a small scale, this device performs admirably. The process of installing the gadget in vehicles is yet another approach that may be used to lessen the number of accidents that are caused by drunk driving. In addition to being user-friendly and easy to repair, the device has a high level of sensitivity to alcohol.
Studies on Seed quality and germination parameters using different treatments in Butea monosperma
Authors: Bohra N.K. , giri Varsha , Yadav Apurva , Yadav Prakash
Published: April 2024

Butea monosperma (Lam.) Taub (Fabaceae) is a medium‐sized tree of the Indian sub‐continent. It is an important species that yields several non‐ timber forest products, such as a water‐soluble dye, lac resin, fodder and leaves for platters .The plant has beautiful flowers adorning leafless canopies during early summer and is aptly described as „the flame of the forest‟. Seeds from different locations in Rajasthan were analyzed for seed quality as well as germination potentials with different treatments. GA3 was found to increase seed germination in compare to other. A detailed work with review work on its reproductive biology is presented in the present study
A new species of Habrophorula from Vietnam and an updated key to species of the genus (Hymenoptera, Apidae)
Authors: Tran Ngat Thi , Engel Michael S. , Nguyen Lien Thi Phuong
Published: April 2024

The rare bee genus Habrophorula Lieftinck, 1974 is recorded for the first time from Vietnam. The genus is represented by a new species, Habrophorula belladeceptrix Tran, Engel & Nguyen, sp. nov., from Cao Bang Province and can be most easily confused with H. nigripes Wu from China. The species is most easily differentiated by the unique form of the male terminalia but can also be distinguished by differences in integumental and setal coloration. A revised key is provided to the species of the genus. Females of the new species were collected at flowers of Saurauia roxburghii Wall. and Saurauia napaulensis DC. (Actinidiaceae); males were collected at flowers of Lantana camara L. (Verbenaceae).
Cattelan est-il l’auteur des œuvres qu’il n’a pas fabriquées ? Ce que la sociologie peut apporter à la compréhension d’un procès en art contemporain
Authors: Dubois Brianne
Published: April 2024

Le 13 mai 2022, un procès a opposé le sculpteur Daniel Druet à l’artiste contemporain Maurizio Cattelan, à son galeriste Emmanuel Perrotin et à la Monnaie de Paris. Druet demande alors à être reconnu comme l’auteur d’une série d’œuvres qu’il a fabriquées pour Cattelan. En nous appuyant sur l’observation du procès, les conclusions écrites de chacune des parties et un entretien avec Druet, nous présentons comment s’est construite l’argumentation de Druet visant à contester l’organisation de la délégation du travail artistique et ce qu’elle dit du fonctionnement du monde de l’art.
Crystallinity Study of Electrodeposited SnO2 on FTO Substrate
Authors: Agasti Uddipan , Karmakar Samit , Kundu Soumik Kumar , Sarkar Mili , Chatterjee Sayan
Published: April 2024

Tin oxide (SnO2) holds significance as an n-type semiconductor metal oxide, finding diverse applications across various fields. It has optimal properties as a gas sensing material, fuel cells, batteries, and so on. The main objective of this research is to synthesize SnO2 thin films at a low-cost, easily replicable method and study its crystallographic properties. Here, the thin film was prepared by electrodeposition using tin sulfate, tartaric acid, and potassium nitrate at 2.1 pH followed by annealing the obtained thin film at 773 K. The whole process was conducted at 300 K without any external DC. The synthesized substrate was crystallographic properties were studied using X-ray diffraction. The average crystallite grain size was evaluated to be around 19 nm with degree of crystallinity close to 48.3%. These outcomes show that the method used to create thin films was in an appropriate direction.
Poly(O-Phenylene Diamine) Reformed Pencil Graphite as the Disposable Electrochemical Sensor for Voltammetric Analysis of Tryptamine
Authors: Murali Aswathy S. , Harish Chippy , Cherian Sherin Susan , Nair Gayathri S. , Lekshmi S.K. , Gopidas Surya , Saraswathyamma Beena
Published: April 2024

By means of electropolymerization process, a simple as well as proficient electrochemical sensor was developed for electrochemical resolution of tryptamine. The morphology and electrochemistry of thus fabricated poly (O-Phenylene diamine) reformed pencil graphite is evaluated thoroughly by FESEM along with DPV and CV respectively. Under experimental settings, finely resolved irreversible electro-oxidation peak at potential +0.594 V obtained for tryptamine on the altered electrode surface with phosphate buffer of pH 9 as supporting electrolyte. The oxidation peak current and tryptamine concentration are observed to possess linearity in the range of 0.4 μM to 117 μM with R2 = 0.99. Additionally the limit of detection (LOD) for tryptamine quantification is found as 0.2 μM. The sensor exhibited superior analytical properties such as high reproducibility, repeatability and anti-interference capability. The practical efficiency of fabricated sensor tested successfully in cheese obtained from milk.
Mitigation of Efflorescence and Alkali Leaching in Activated Slag Using Foundry Sand
Authors: Sithole Nastassia Thandiwe
Published: April 2024

This research aimed to examine the impact of foundry sand on alkali leaching and the formation of efflorescence in alkali-activated slag. The activation process involved the utilization of sodium hydroxide and sodium silicate solutions in activating ground-granulated blast furnace slag (GBFS) and sand samples. The leaching of alkali and the formation of efflorescence were observed to occur at a reduced rate in samples derived solely from 100% ground granulated blast furnace slag (GBFS). In contrast, higher rates were identified in samples containing chemically bonded foundry sand. The incorporation of chemically bonded foundry sand elevated the mobility of alkali, leading to an increased formation of efflorescence in alkali-activated slag. Following a three-day immersion of the specimens in deionized water, nearly all of the sodium was leached from the samples, highlighting the limited affinity of sodium within the gel structure.
Research Capacity Indicators Multiservice Convergent Communication Networks Based on Modern Technologies
Authors: Amanullazada Fagan
Published: April 2024

The principles of building and organizing fixed and wireless communication networks are analyzed using the possibilities promising information technologies. Based on the research, a new approach to the construction of a mathematical model of convergent networks is proposed for measuring their throughput indicators. Based on the models, analytical expressions for the convergence processes of fixed and wireless networks of mobile communication were obtained.
A Spectrum? Diglossia as Seen in Contemporary Sinhala Novels
Authors: Mawelle Indira
Published: April 2024

Sinhala, like many languages in South Asia, shows features of a clear diglossic situation. As against the definition of the term ‘diglossia’ which identifies two distinct varieties of the same language as used in specific functional domains, some scholars who have conducted research on Sinhala as a diglossic language, have raised the argument that the language has more than two diglossic variations spreading out into a spectrum of intermediate diglossic variations. In this paper, the researcher has made an attempt to conduct a study of the different ways in which language has been used in the authorial comments and descriptions in a selected number of contemporary novels, all of which have been written by award-winning authors, to determine the applicability of the above argument by scholars to a contemporary situation of language use. In this attempt, the researcher has employed the discourse on the lectal differences that could be applied to a study on a diglossic linguistic situation. The outcome of the study shows that the fiction writers concerned have employed the Sinhala language at various different styles and levels in both its grammar and vocabulary, thus validating the argument that Sinhala shows the existence of more than two distinct diglossic varieties and entails a gamut of intermediate varieties.
Traditional Medicine and Hand Medicine in the Devinuwara Area in the Southern Province: A Holistic Approach to Disease Cure
Authors: Gamage G. C. L. , Manage K. M. G. A. , Pabasara H. K.
Published: April 2024

Traditional and hand medicine have deep roots in Sri Lanka's history and culture. Sri Lanka has a long history of indigenous medicine systems. . Traditional medicine can be identified as an intangible heritage of Sri Lanka. Hand medicine, also known as "hela wedakama" in Sinhala, is a specialized branch of traditional medicine in Sri Lanka that focuses on analysing the pulse, hand shape, lines and other features of the hands to diagnose and treat illnesses. Practitioners of hand medicine believe that different points on the hand correspond to different organs and parts of the body. By examining these features, they can identify imbalances or disorders in the body and recommend appropriate treatments, such as herbal remedies, dietary changes, and therapeutic techniques. This research investigates the value of using traditional and hand medicine as a disease-cure system. The Matara district in the Southern province was home to many people skilled in medicine and "yantras,” “mantras,” "gurukam,” and sacrificial offerings. Local Sinhala medicine is also prominent among them. Field and literature study methods were used to collect the data for research purposes. The literature study paid special attention to primary and secondary sources. "Puskola poth" about local medicine was used as a primary source. Various books, articles and magazines were used as secondary sources. In a field study, data was collected through in-depth interviews with 34 people. The sample selection was conducted through the purposive sampling method. Moreover, open-ended questions and cross-cutting questions were asked for further clarification. A field study was conducted in the Devinuwara Divisional Secretariat (DS Code: - 3245) of the Matara district. It was revealed that there are treatments for many diseases related to the eyes, ears, phlegm and the mouth related to the traditional medicine system. Also, it was revealed that through Herbal medicines, visible diseases and the suppression of invisible forces that the eye cannot see are cured. It can be concluded that, during this time when Western medicine gained popularity, it was found that the people of Devinuwara were still stuck with traditional medicine and hand medicine.
Celiomesenteric trunk: An anatomical variation of gastrointestinal vasculature
Authors: Wickramarathna E. A. A. M. , Priyadarshani K. M. W. W. , Kumara D. A. S. S. , Chandimal K. M.
Published: April 2024

Celiomesenteric trunk (CMT), a rare anatomical variant of the origin of the celiac trunk and the superior mesenteric artery (SMA) as a single trunk, has significant clinical implications. This case report describes an incidental observation of a CMT in a female cadaver of the Department of Anatomy, Faculty of Medicine, Wayamba University of Sri Lanka. The presence of this variation may influence surgical and interventional procedures in the gastrointestinal system. Therefore, it is essential to be aware of such variations for accurate diagnosis, management, and surgical planning.
Does the male BMI affect sperm parameters? A systematic review
Authors: Fernando W. W. R. R. , Tennakoon V. , Jayawardena M.
Published: April 2024

Objective: The effect of obesity on male reproductive health has recently gained considerable attention, particularly the effect on sperm parameters. However, studies show a controversial relationship between male obesity and their sperm parameters. This study aimed to systematically review the published literature on the relationship between men's BMI and their sperm parameters.Method: A comprehensive systematic search of PubMed and SCOPUS databases was conducted to identify relevant research published in the English language from January 2010 to April 2023. Ten studies were determined according to the PRISMA statement for the systematic review, including 19,008 male participants. The first two authors conducted the search strategy independently, and the identified papers were critically appraised before the analysis. Data on sperm parameters such as semen volume, sperm concentration, count, motility, and morphology were systematically extracted into predesigned data extraction sheets. Statistical software SPSS version 25.0 was used for data analysis.Results: Among the ten studies included in this analysis, four studies with 2391 participants found no statistically significant association between men's BMI and their sperm parameters. In contrast, the remaining six studies involving 16,702 participants showed a statistically significant negative correlation between BMI and sperm concentration, count, and motility (p<0.001, p=0.05, p<0.001, respectively). Nevertheless, the analysis revealed no statistically significant correlation between body mass index and sperm volume (p=0.46) or sperm morphology (p=0.14).Conclusion: The study results show that BMI significantly affects sperm concentration, count, and motility. However, BMI did not show a significant effect on sperm volume and sperm morphology.
Polycystic ovarian syndrome
Authors: Gihan M. C. , Wijerathna A. A. W. M. , Pathiraja P. A. C. P.
Published: April 2024

The most common hormonal disorder in women at reproductive age is the Polycystic Ovary Syndrome (PCOS) and the complex pathophysiology of PCOS and its substantial health repercussions, which include obesity, cancer, cardiovascular disease, diabetes, and psychological morbidities, have made it a major global health concern for women. The aim of the present review article is to summarize the literature available on PCOS and to identify the pathophysiology, diagnosis criteria and the treatments for the disease.
Exercise recommendations in pregnancy – A literature review
Authors: De Silva P. H. P. Y. , Mathota C.
Published: April 2024

No abstract available
Official controls on the distance sale of dairy products in the territory of the Modena Local Competent Authority: an analysis of websites
Authors: Di Carlantonio Elisa , Romagnoli Lucia , Schatzle Annette , Base Giuseppe , Liuzzo Gaetano
Published: April 2024

The internet and digital technologies pose new specific challenges to competent authorities, whose activity fields are limited to their own jurisdictions. Consequently, these authorities must operate a system of controls adapted to online sites and e-sales, and official control must be strengthened. To address these challenges and protect consumers from misleading practices that can lead to the consumption of unsafe food, it is necessary to adapt official controls to new distance-selling techniques. The food inspection scheme as conceived in the European legal system cannot be easily applied to online food sales. To this purpose, the competent authorities need to equip themselves to guarantee effective control and compliance with the European Union laws regarding food sold online. It emerged that there are different levels of non-compliance with online food: the non-registration of the food business operator (registrant) and the non-compliance with the obligations as the law prescribes (obligations on food hygiene, electronic commerce, and information to consumers about the food). The focus of this survey on the distance sale of dairy products in Modena Local Competent Authority territory is on the pattern suggested by the Food Standards Agency in 2016. This analysis is based on two different phases. The first one is the study of the websites, and the second one is the physical visit to the address of the online food business. This survey shows how to collect the first phase's data and organize the official controls.
In vitro biocontrol of phytopathogenic fungi isolated from the rhizosphere of multiple crops by a native Trichoderma strain
Authors: Santos Villegas Alondra , Jiménez-Juárez Nuria , Rosas Morales Minerva , Castillo-Hernández Dalia
Published: April 2024

Phytopathogenic fungi associated with roots and leaves can cause significant losses in crops of commercial interest due to alterations in the growth and development of the host plants. In addition, they could contaminate fruits in the postharvest stage, provoking significant economic damage. In this regard, biocontrol by antagonistic fungi such as Trichoderma sp. (Peerson, 1974) has been shown as a viable eco-friendly solution. Accordingly, in this study, four genera of native phytopathogenic fungi, namely Fusarium (Link, 1809), Botrytis (Micheli & Peersoon, 1729), Alternaria (Nees, 1817), and Colletotrichum (Corda, 1831)], as well as of native postharvest fungi, namely Rhizopus (Anton de Bary, 1886), Mucor (Saccardo, 1887), Penicillium (Friedrich, 1809), and Aspergillus (Micheli, 1728), were isolated and identified from the rhizosphere of multiple crops of an unstudied autochthonous region in Puebla, Mexico. The isolated phytopathogens were tested in dual confrontation assays against a native Trichoderma strain with presumable antagonistic activity, finding a significant growth inhibition, reported for the first time. For the phytopathogenic fungi, the highest percentage of inhibition of radial growth (PIRG) was observed in Fusarium sp., followed by Alternaria sp., and Colletotrichum sp.; for the post-harvesting fungi, the best PIRG was found in Penicillium sp. (2), followed by Aspergillus sp., Rhizopus sp., Mucor sp., and Penicillium sp. (1).
Correlation between placental bacterial PCR results and histological chorioamnionitis: a prospective study on 41 placentas
Authors: Zaidi Hanaa , Lahlou Laila , Chraybi Mariem , Barkat Amina , Elamrani Sabah , Lamalmi Najat
Published: April 2024

Chorioamnionitis or intra-uterine inflammation is considered the most common infection diagnosed in labor and delivery units worldwide. It is a leading cause of maternal morbidity and mortality, as well as neonatal death and sepsis. The heterogeneity of this clinical syndrome has been recently reported. The objectives of this study were to determine: 1) placental microbiology using molecular microbiological techniques; 2) diagnostic accuracy of the clinical criteria used to identify patients with placental bacterial infection; 3) relationship between placental bacterial infection and histological chorioamnionitis. This prospective cross-sectional study included 41 women diagnosed with clinical and histological chorioamnionitis. The presence of microorganisms in the placenta was determined by conducting placental analysis using a broad range of polymerase chain reactions (PCR). Bacterial placental infection (defined as the presence of the 16S gene detected in placental tissue using the molecular technique PCR) was observed in 63% (26/41) of parturients diagnosed with histological chorioamnionitis. The traditional criteria for diagnosing clinical chorioamnionitis exhibit poor diagnostic performance in accurately identifying proven intra-amniotic infection. The molecular analysis (PCR) of the placenta has suggested that acute chorioamnionitis commonly has a bacterial origin.
Head Impact Exposure in Hawaiian High School Football: Influence of Adherence Rates on a Helmetless Tackling and Blocking Training Intervention
Authors: Swartz Erik E , Myers Jay L , Lee Jong Soo , Broglio Steven P , Furutani Troy , Oshiro Ross , Gioia Gerard A , Brothers Darian , Glodowski Kiera , Lloansi Ivet , Meyer Lauren , Murata Nathan
Published: April 2024

Context

High school football remains a popular, physically demanding sport despite the known risks for acute brain and neck injury. Impacts to the head also raise concerns about their cumulative effects and long-term health consequences.

Objective

To examine the effectiveness of a helmetless tackling training program to reduce head impact exposure in football participants.

Design

A three-year, quasi-experimental, prospective cohort (clinicaltrials.gov #NCTXXX) study.

Setting

Honolulu (XXX, XXX) area public and private secondary schools with varsity and junior varsity football.

Patients or Other Participants

Football participants (n=496) ages 14 to 18 years old. Intervention(s) Participants wore new football helmets furnished with head impact sensor technology. Teams employed a season-long helmetless tackling and blocking intervention in Years 2 and 3 consisting of a 3-phase, systematic progression of 10 instructional drills.

Main Outcome Measure(s)

Head impact frequency per athlete exposure (ImpAE), location, and impact magnitude per participant intervention adherence levels (60% and 80%).

Results

An overall regression analysis revealed a significant negative association between ImpAE and adherence (p=0.003, beta=-1.21, SE=0.41). In year 3, a longitudinal data analysis of weekly ImpAE data resulted in an overall difference between the adherent and non-adherent groups (p=0.040 at 80%; p=0.004 at 60%), mainly due to decreases in top and side impacts. Mean cumulative impact burden for the adherent group (n=131: 2,105.84g ± 219.76,) was significantly (p=0.020) less than the non-adherent group (n=90: 3,158.25g ± 434.80) at the 60% adherence level.

Conclusions

Participants adhering to the intervention on at least a 60% level experienced a 34% to 37% significant reduction in the number of head impacts (per exposure) through the season. These results provide additional evidence that a helmetless tackling and blocking training intervention (utilizing the HuTT® program) reduces head impact exposure in high school football players. Adherence to an intervention is crucial for achieving intended outcomes.
Development of a Smart Waste Management System with Automatic Bin Lid Control for Smart City Environment
Authors: Abdullahi Abbas , Mohammed Ameer , Bonet Mathias Usman , El-Suleiman Abdussalam , Ahmad Rabiu B. , Chollom Teng David
Published: April 2024

As cities worldwide transform into smart, interconnected urban environments, the management of municipal waste emerges as a pressing challenge. This paper, titled "Development of a Smart Waste Management System with Automatic Bin Lid Control," offers a sophisticated solution that integrates seamlessly within the concept of smart cities. This system harnesses the power of the Internet of Things (IoT) to optimize waste collection and enhance urban cleanliness. The primary aim of this project is to create a smart waste management system that extends beyond traditional waste bins. It introduces a network of intelligent waste containers equipped with automatic lid control mechanisms that operate based on real-time waste level data. When approaching these bins, the lid control mechanism automatically opens the bin only if the waste level is not full, thereby facilitating convenient waste disposal. In the context of smart cities, this innovative approach presents several advantages. It optimizes waste collection efficiency by prioritizing bins in need of immediate attention and ensures that waste containers are not prematurely emptied, reducing unnecessary waste disposal trips. Moreover, the system enables city authorities to gain insights into waste level trends, fostering data-driven and proactive waste management strategies for a cleaner, more sustainable urban environment.