bluuebunny/crossref_metadata_2025 huggingface dataset:
An Investigation of the Use of Physical Manipulatives to Enhance the Conceptual Understanding of Operations on Fraction Among Pre-Service Teachers
Authors: Kwasi Klu Theophilus , Assan Francis Kwaku , Maanu Vivian , Atta Solomon Ohene Amoako
Published: March 2023

This study aimed to investigate the role of physical manipulatives in building pre-service teachers' conceptual understanding of fractions. Using a quasi-experimental design, one hundred fifty (150) pre-service teachers were chosen based on purposive sampling. Before implementing the five-week intervention design, which was based on manipulatives, an initial test was conducted. To collect additional data for the study, a second test was administered immediately after the intervention to supplement the pre-intervention test. The statistical analysis revealed a Pretest (mean = 9.11, standard deviation = 4.863), and a Post-test (mean = 21.60, standard deviation = 6.021). The null hypothesis was rejected using the t-test, which revealed (P = 0.00 < 0.05) at a confidence level of 95%, as there was a statistically significant difference in the performance of Pre-service teachers between the two tests. Therefore, the researchers recommend that fractions be taught using manipulatives in colleges of education.
PENERAPAN PEMBELAJARAN BERBASIS PRAKTIKUM UNTUK MENINGKATKAN KETERAMPILAN PROSES SAINS DAN SIKAP ILMIAH SISWA SMK PADA MATERI BAKTERI
Authors: Arnita Sari Yuli
Published: March 2023

Tujuan dari penelitian ini adalah untuk meningkatkan keterampilan proses sains dan sikap ilmiah siswa melalui penggunaan pembelajaran berbasis praktikum. Metode yang digunakan yaitu quasy experiment. Desain penelitian yang digunakan adalah Nonequivalent Control-Group Design. Teknik pengambilan sampel penelitian ini menggunakan purposive random sampling.teknik pengumpulan data, antara lain: tes, observasi dan teknik angket. Penelitian dilaksanakan pada salah satu Sekolah Menengah Kejuruan di Kota Cirebon, yaitu SMKRISE Kedawung Cirebon. Penerapan pembelajaran berbasis praktikum ini dapat sepenuhnya (100%) dilaksanakan. pembelajaran berbasis praktikum mampu meningkatkan keterampilan proses sains siswa pada saat sebelum pembelajaran (pretes) rata-rata nilai siswa sebesar 38,13, sementara setelah pembelajaran sebesar 85,27. N-Gain yang diperoleh pada masing-masing indikator keterampilan proses sains yaitu indikator pengamatan (observasi), meramalkan (prediksi) dan menggunakan alat atau bahan atau sumber adalah 1 (satu); indikator menerapkan konsep, indikator menafsirkan (interpretasi), dan indikator berkomunikasi adalah 0,90; indikator merencanakan percobaan adalah 0,74; indikator berhipotesis adalah 0,62. Peningkatan nilai keterampilan proses sains tertinggi terdapat pada indikator menggunakan alat atau bahan atau sumber yaitu sebesar 47, sedangkan peningkatan terendah terdapat pada indikator berhipotesis yaitu sebesar 28. Peningkatan nilai sikap ilmiah siswa tertinggi terdapat pada indikator mengutamakan bukti yaitu sebesar 48, sedangkan peningkatan terendah terdapat pada indikator bersikap positif terhadap kegagalan sebesar 28. Pembelajaran berbasis praktikum sangat baik dan tepat untuk dilaksanakan pada proses pembelajaran, karena dapat memberikan pengalaman dan keterampilan dalam bekerja di lingkungan laboratorium secara teliti, sesuai prosedur, dan berhati-hati.
KOMUNIKASI EFEKTIF SUPERVISOR DALAM PENYELENGGARAAN SUPERVISI AKADEMIK SEBAGAI UPAYA MENINGKATKAN KINERJA GURU MTs. NURUL FATA
Authors: Kiya Luthfi Tazkiyatul Anwariah , Akhmad Rifai
Published: March 2023

Salah satu tujuan diselenggarakannya supervisi akademik yaitu sebagai upaya untuk meningkatkan kinerja guru. Dalam hal ini supervisor harus dapat mengkomunikan pesan secara efektif, karena supervisor bukan hanya menilai guru yang disupervisi, namun supervisor juga memberikan bimbingan terhadap guru. Oleh sebab itu komunikasi efektif penting diterapkan supervisor dalam penyelenggaraan supervisi akademik. Tujuan dari penelitian ini untuk mengetahui bagaimana komunikasi efekif Kepala MTs. Nurul Fata sebagai supervisor dalam penyelenggaraan supervisi akademik terhadap kinerja guru. Metode yang digunakan adalah kualitatif, dengan pendekatan deskriptif kualitatif. Hasi dari penelitian ini memaparkan bahwa komunikasi yang dilakukan supervisor (kepala MTs. Nurul Fata) meliputi komunikasi organisasi (organization communication) dan Komunikasi antarpribadi (interpersonal communication) dengan menerapkan 5 hukum dasar komunikasi diantaranya adalah sebagai berikut; 1) Respect; kepala madrasah mampu menghargai keberadaan guru, 2) Empathy;  kepala madrasah mampu untuk memahami keadaan guru yang di supervisi, 3) Audible;  bimbingan maupun arahan kepala madrasah dapat didengarkan dan dimengerti baik melalui media komunikasi seperti whatsupp maupun zoom, karna pada masa pandemi ini kepala madrasah melakukan monitoring terhadap kinerja guru, 4) Clarity; kepala madrasah mampu menyampaikan pesan maupun arahan dengan jelas dan 5) Humble; dalam menyampaikan pesan maupun koreksi yang tentunya membangun kepala sekolah menyampaikannya dengan bijak.
UPAYA MENINGKATKAN PRESTASI SISWA DALAM MEMBUAT ARANSEMEN MUSIK POPULER MELALUI MEDIA PIANIKA PADA KELAS IX DI SMPN 2 KATAPANG KAB. BANDUNG
Authors: Sumiati Ucu
Published: March 2023

This research is knowing the success rate of students in creativity in making popular music arrangements through pianika media in class IX of SMP Negeri 2 Katapang Bandung Regency so that learning becomes more effective and quality, as well as describing active, innovative, creative, effective and fun learning. The research method used is the class action research method. This method is carried out through surveys, descriptive analysis and experimentation. The subjects of the study were 36 people consisting of 19 female students and 17 men. This subject was chosen based on the results of the initial test, namely semester 1, which showed that class IX had a grade average score and low completion and the enthusiasm for learning music on this material was low compared to other classes. The data collection techniques used are tests, observations, questionnaires, interviews and documentation. The data analysis technique used is an interactive model that has four components, namely data collection, data reduction, data presentation, and drawing conclusions or verification. In this study, the criteria for successful action for learning achievement were with a complete limit of 75 (KKM = 75) and a class completion of 85%. The results showed that there was an increase in student achievement in (creativity in making arrangements of popular music) through classical pianica media before pre-action was 12/36 X 100 % = 33.33%, (still relatively low) and the percentage of student success in (creativity in making arrangements of popular music) through the medium of pianica after action (cycle 1) was 24 / 36 X 100 = 66.66% (still relatively high).
DIRECT COLLOCATION METHOD FOR SOLVING OPTIMAL CONTROL PROBLEMS
Authors: Mosconi Denis , Luizete Claiton Eduardo , Siqueira Adriano Almeida Gonçalves
Published: March 2023

Objective: The purpose of this work was to present in details the development and use of the direct collocation method to solve optimal control problems. Methods: This was made in three parts: the first addresses how to formulate the optimal control problem, the second presents the direct collocation method addressing its construction, operation and comparison with other methods, and, finally, the third part introduces and example of an optimal control problem applied to a mechanical system (mass-spring-damper) and solved by the direct collocation method, making the algorithm used available to the reader. Results: The results obtained with the application of the optimal control to the mechanical system were the optimal states (position and velocity) and the optimal force needed to move the mass between three predefined points. Conclusion: With the work was possible to understand in detail the development and application of the direct collocation method to solve optimal control problem as well as to infer that it is a powerful and efficient tool when compared with other numerical methods.
ESTUDO DE VIABILIDADE POR MEIO DOS CONCEITOS DA INDÚSTRIA 4.0 APLICADOS NA LOGÍSTICA INTERNA: IMPLEMENTAÇÃO DE VEÍCULOS GUIADOS AUTOMÁTICOS EM UMA EMPRESA DE MANUFATURA
Authors: Gonçalves Fernando Sabino
Published: March 2023

O processo industrial encontra-se cada vez mais competitivo e dinâmico. Entender as necessidades do cliente nunca foi tão importante para o alcance de desempenhos significativos e inovadores. A tecnologia vem sendo a principal aliada para empresas que buscam ser sustentáveis do ponto de vista econômico, social e ambiental. Se tratando de desenvolvimento econômico, investir em tecnologias se tornou algo imprescindível para o alcance de resultados importantes, como reduzir custos, diminuir as perdas e ter no mercado produtos que ofereçam valor ao seu cliente. Com essa finalidade, a indústria 4.0 desempenha um papel fundamental ao introduzir conceitos e estratégias que buscam otimizar e eliminar desperdícios. Entre as tecnologias disponíveis, podem-se destacar os veículos guiados automaticamente (AGV’s). Neste contexto, esse estudo teve como objetivo analisar o grau de viabilidade da aplicação dos AGV’s dentro de uma empresa de manufatura. A implantação desta tecnologia poderá ajudar a reduzir perdas, eliminar gargalos, reduzindo assim o custo operacional no processo produtivo. Para o desenvolvimento deste estudo foi realizada uma revisão de literatura acerca da aplicação de AGV’s, e, a partir de então, se buscou analisar a viabilidade da tecnologia no processo produtivo, demonstrando assim, possíveis ganhos com a aplicação da tecnologia. Por fim foi apresentada uma análise de ganhos comparados com sistema de transporte manuais e com AGV, viabilizando os ganhos que a tecnologia pode oferecer, e, por meio das análises de aplicação de pesquisa operacional, buscou-se o menor tempo de percurso na entrega do material. Objetivo: Demonstrar a viabilidade da implantação de veículos guiados automáticos em uma empresa de manufatura, por meio do conceito da indústria 4.0, utilizando métodos de pesquisa operacional e programação linear. Busca-se demonstrar os ganhos reais com a tecnologia implantada na logística interna. Métodos: O trabalho envolve em quantitativa, baseando-se na abordagem do problema. Quanto aos objetivos, pode-se descrevê-la como pesquisa exploratória. Resultados: Apresentação dos benefícios com a aplicação de veículos guiados automaticamente, Conclusão: Com um mercado altamente competitivo, investir em tecnologia torna-se cada vez mais importante para as empresas que buscam solidez e competitividade no mercado, focando na qualidade dos seus produtos e na fidelização dos seus clientes.
ANÁLISE DE VIABILIDADE ECONÔMICA DA INSTALAÇÃO DO SISTEMA SHORE POWER NO PORTO DE ITAGUAÍ ATRAVÉS DA SIMULAÇÃO DE MONTE CARLO
Authors: Azevedo Lucas , Vidal Leonardo , Coutinho Leonardo , Pereira Newton , Pimenta Tales
Published: March 2023

Objetivo: É indiscutível a importância do transporte marítimo no comércio global. Entretanto, por ser um dos modais mais utilizados para o transporte de mercadorias, é evidente que os impactos ambientais gerados sejam tão relevantes quanto, uma vez que além das emissões de gases tóxicos e material particulado na atmosfera, ainda existe a poluição sonora gerada pela queima do combustível fóssil nos motores de combustão das embarcações. O Shore Power surge como um recurso que visa reduzir estes impactos, uma vez que ao substituir a fonte primária de energia do navio atracado em uma instalação portuária pela energia elétrica ongrid, pode-se desligar os motores movidos a combustível fóssil, reduzindo significativamente a poluição aérea e sonora gerada. Entretanto, apesar desta tecnologia ser extremamente promissora, ainda não é utilizada nacionalmente. Desta forma, através da aplicação em uma das instalações portuárias mais significativas da região Sudeste brasileira, visa-se estimular o investimento nesta tecnologia. Métodos: Para realizar esta a simulação desta aplicação, optou-se por utilizar a Calculadora de Viabilidade de Instalação do Sistema Shore Power através da Simulação de Monte Carlo, desenvolvido por Vidal (VIDAL, 2022), coautor deste estudo, que fornece uma análise financeira que considera também a imprevisibilidade do mercado financeiro, trazendo assim uma maior confiabilidade aos resultados obtidos. Resultados: Através da simulação do realizada, foi possível obter uma Taxa Interna de Retorno de cerca de 23%, sendo mais que o dobro da Taxa Mínima de Atratividade em consideração, de 9,25%. Conclusão: Portanto, além dos benefícios ambientais gerados pela implantação da tecnologia Shore Power na instalação portuária de Itaguaí, o sistema ainda traria ganhos financeiros consideráveis, mostrando, assim, que o grande potencial de instalação no território brasileiro.
INSERÇÃO DE GERAÇÃO FOTOVOLTAICA COMO BONIFICAÇÃO PARA OBTENÇÃO DE ETIQUETA PROCEL EDIFICA NO LABORATÓRIO DE ENGENHARIA ELÉTRICA E COMPUTAÇÃO DA UNIVERSIDADE FEDERAL DO PARÁ
Authors: Silva Hosaias Alves Dos Prazeres
Published: March 2023

Este artigo apresenta a análise de instalações elétricas e de eficiência energética do Laboratório de Engenharia Elétrica e Computação da Universidade Federal do Pará, seguindo a metodologia das diretrizes estabelecidas no Regulamento Técnico da Qualidade em Edifícios Comerciais, de Serviços e Públicos, para a inserção de um Sistema de Geração Fotovoltaica dimensionado conforme metodologia tradicional de Sistemas Híbridos, como bonificação a fim de se obter a Etiqueta Nível A do Programa Brasileiro de Etiquetagem de Edificações. As pesquisas e as propostas apresentadas no trabalho que deram origem a esse artigo mostram os benefícios energéticos e ambientais resultantes; e os Resultados deste artigo enfatizam a economia de consumo e o retorno financeiro de implantação e utilização do Sistema de Geração Fotovoltaica.
Possible high fever in influenza outpatients with migraine – A retrospective cohort study
Authors:   Department of Internal Medicine, Kanazawa Seirei Hospital, Kanazawa, Japan, Doi Tatsurou
Published: March 2023

Background. There is limited information on neurologic complications associated with influenza in adults. Objectives. To identify headache features and high fever in influenza outpatients with migraine in the Department of Internal Medicine by a neurologist. Methods. In 2022, a retrospective cohort study was performed to review the medical records during 2016 to 2019. A total of 64 (44 women; 53 unvaccinated; 47 type A) influenza patients were included. All patients were physically examined, and axillary temperatures were measured at around 9 am. The mean body temperature in 34 patients without headache was compared to that in 22 with headache and 8 with headache and an underlying migraine. Results. Among the 27 unvaccinated influenza type A patients (18 women) under 50 years old, the mean body temperatures were 37.79, 38.10, and 38.86 degrees C for the 12 (6 women) without headache, 10 (8 women) with headache, and 5 (4 women) with headache and a history of migraine, respectively. The mean [SD] ages were 33.58 [7.27], 37.30 [9.58], and 32.40 [7.50] years, respectively. Levene`s Test showed no equal variances between the body temperatures of the 12 without headache and those of 5 with headache and a history of migraine (P=0.007). Welch`s Test showed significant differences in their mean body temperatures (P=0.012). Conclusion. There is a possibility of high fever in unvaccinated influenza type A outpatients under 50 years old with migraine.
Experience in the use of a multimodal staging system for Parkinson’s disease in clinical practice
Authors:   Regional Clinical Hospital, Odessa, Ukraine, Khubetova Iryna , Vorokhta Yurii ,   PMC ”Expert Health”, Odessa, Ukraine
Published: March 2023

Objective. The aim of the study was to evaluate the information content of the multimodal staging system for Parkinson’s disease in clinical practice. Material and methods. The study was conducted on the basis of the Regional Clinical Hospital (Odesa). 364 patients with Parkinson’s disease were examined. Clinical manifestations were assessed according to the recommendations of Levin O.A. et al. (2019). Outcomes. Average age of the patients was 64.6±0.5 years, the sample was dominated by men – the gender ratio was 1/1.14. Left-sided lesions were noted in 126 (34.6%) patients, right-sided – in 127 (34.9%), bilateral – in 111 (30.5%). The akinetic-rigid form was observed in 92 (25.3%) cases, trembling – in 27 (7.4%) cases, mixed rigid-trembling in 157 (43.1%) cases, tremulous-rigid in 92 (7.4%) cases). Stage 1 according to Hoehn-Yahr was determined in 33 (9.1%), stage 1.5 – in 58 (15.9%), stage 2 – in 104 (28.6%), stage 2.5 – in 36 (9.9%), stage 3 - in 102 (28.0%), stage 3.5 – in 6 (1.6%), stage 4 – in 25 (6.9%) cases. No cases of stage 5 were reported. 65.4% of patients had cognitive impairments. 121 (33.2%) patients had pain syndrome of varying severity. Vegetative manifestations of varying severity were observed in 201 (55.2%) patients, affective manifestations – in 170 (46.7%) patients. Conclusion. The MOSCOVA scale is advisable to detail the criteria for staging within motor and non-motor manifestations of PD.
O Impacto Ambiental Sobre Os Recursos Hídricos No Caso Brumadinho:
Authors: Souza Andressa Dué Nascimento , Silva Letícia de Oliveira , Silva Priscilla Santana , Gomes Paulo Victor Dafico Moreira da Costa
Published: March 2023

O presente trabalho tem por tema o impacto ambiental sobre os recursos hídricos no casoBrumadinho com ênfase nas consequências jurídicas, haja vista a comum ocorrência dosrompimentos das barragens de rejeitos no Brasil e os sérios riscos que as substâncias contidasnesses rejeitos apresentam à natureza e à vida humana. Sendo assim, a pesquisa objetiva analisar osdanos causados pelo rompimento da Barragem I apresentando as consequências hídricas e jurídicasdesse tipo de tragédia, a fim de demonstrar a seriedade do assunto e despertar o interesse social como intuito de evitar que desastres assim aconteçam novamente. Nesse propósito, tem-se as seguintesproblematizações: como a falta de fiscalização adequada nas empresas de extração de minério; autilização de barragens do tipo montante; negligência por parte da empresa Vale em relação amedidas de segurança e monitoramento da barragem; o alto nível de toxicidade da água do rioParaopeba impactam todo o ecossistema ao seu redor? Para lograr êxito, o texto se divide em trêscapítulos: no primeiro, aborda-se a importância ambiental e socioeconômica dos recursos hídricosem Brumadinho; o segundo dispõe sobre a motivação e os requisitos normativos para a construçãoda barragem I, salientando também o tipo da barragem que se rompeu e como foi a sua construção;e, por fim, o terceiro capítulo discorre sobre o rompimento da barragem, apresentando relatos desobreviventes, os danos hídricos causados e as consequências jurídicas. O artigo tem pormetodologia a pesquisa bibliográfica e documental pública, utilizando-se de autores renomados taiscomo Pablo Stolze e Lindolfo Soares, entre outros.
Geophysical archaeological prospection, the road ahead ...
Authors: Trinks Immo , Löcker Klaus , Nau Erich , Hinterleitner Alois
Published: March 2023

We provide an overview of challenges and possible promising developments that lie ahead in the field of archaeological geophysics. The presented ideas can serve as blueprints for exciting new developments.
Determination of the subsurface structure of the Chora Plain (Samos) by seismic noise analysis
Authors: Kallinich Nina , Thorwart Martin , Rabbel Wolfgang
Published: March 2023

Seismic noise was passively recorded with mini-arrays, allowing shear wave velocities of individual layers to be estimated. A statistical analysis by beamforming was performed. A 1D underground model of the Chora plain was derived. Three dominant structures were found: coastal barrier, siltated lagoon and the interior of the Chora plain.
Identification of buried archaeological features using the curvelet transform
Authors: Karamitrou Alexandra , Tsokas Gregory N.
Published: March 2023

We present an application of the curvelet transform fusion method between geophysical and remote sensing data. The method was tested in two different archaeological areas in Greece with different historical, archaeological, and environmental characteristics. The final fused images combined all available information reducing the noise and enhancing the interesting features.
The gradient structure tensor (GST): an efficient tool to analyze 3D GPR data for archaeological prospection
Authors: Koyan Philipp , Tronicke Jens
Published: March 2023

We present GPR data across remains in a Palace Garden at Paretz (Germany). We use the GST to highlight archaeological structures in the GPR data. We outline the flexibility and time-efficiency of a GST-based analysis strategy.
Love your polygons: powerful processing of vectorised geophysics data
Authors: Schmidt Armin
Published: March 2023

By converting raster data to vectors several spatial attributes become readily available. For non-gridded data the vectorisation can happen after creating a raster, from a Triangulated Irregular Network (TIN), or directly from the xyz data using an efficient spatial index. Classification, clustering and envelop creation is simple from vectorised data. Examples of aggregation and analysis of results are provided using different data sources.
Moduli Space of Factorized Ramified Connections and Generalized Isomonodromic Deformation
Authors:   Kyoto University, Japan, Inaba Michi-aki
Published: March 2023

We introduce the notion of factorized ramified structure on a generic ramified irregular singular connection on a smooth projective curve. By using the deformation theory of connections with factorized ramified structure, we construct a canonical 2-form on the moduli space of ramified connections. Since the factorized ramified structure provides a duality on the tangent space of the moduli space, the 2-form becomes nondegenerate. We prove that the 2-form on the moduli space of ramified connections is d -closed via constructing an unfolding of the moduli space. Based on the Stokes data, we introduce the notion of local generalized isomonodromic deformation for generic unramified irregular singular connections on a unit disk. Applying the Jimbo-Miwa-Ueno theory to generic unramified connections, the local generalized isomonodromic deformationis equivalent to the extendability of the family of connections to an integrable connection. We give the same statement for ramified connections. Based on this principle of Jimbo-Miwa-Ueno theory, we construct a global generalized isomonodromic deformation on the moduli space of generic ramified connections by constructing a horizontal lift of a universal family of connections. As a consequence of the global generalized isomonodromic deformation, we can lift the relative symplectic form on the moduli space to a total closed form, which is called a generalized isomonodromic 2-form.
A taxonomic synopsis of Heliotropiaceae (Boraginales) in Thailand
Authors: Rueangsawang Kanokorn , Chantaranothai Pranom
Published: March 2023

A synopsis of Heliotropiaceae in Thailand is presented together with the taxonomic history, identification keys, distribution, phenology, herbarium specimen citations and diagnostic characters of each species. The taxonomic character of the family is of terminal style with a conical stigma structure forming a basal ring around the style. There are 12 species: five species each in Euploca and Tournefortia and two species in Heliotropium. Three species are newly recorded in Thailand, Euploca ovalifolia, Tournefortia hookeri and T. montana. Lectotypes are selected for T. boniana and T. tetrandra var. angustifolia.
The vascular flora of Empoli (Tuscany, central Italy)
Authors: Peruzzi Lorenzo
Published: March 2023

A list of the vascular flora occurring in the municipality of Empoli (province of Firenze, Tuscany) is provided. The list is based on a bibliographic analysis and on field studies carried out in the years 2018–2022. A total of 757 specific and subspecific taxa currently occur in the study area (including 117 aliens), plus 51 cultivated taxa. Azolla filiculoides Lam., Prunus cerasifera Ehrh., and Veronica filiformis Sm. should be considered as naturalized aliens in Tuscany.
Some identities of degenerate higher-order Daehee polynomials based on $ \lambda $-umbral calculus
Authors: Kim Dojin , Park Sangbeom , Kwon Jongkyum
Published: March 2023

The degenerate versions of special polynomials and numbers, initiated by Carlitz, have regained the attention of some mathematicians by replacing the usual exponential function in the generating function of special polynomials with the degenerate exponential function. To study the relations between degenerate special polynomials, $ \lambda $-umbral calculus, an analogue of umbral calculus, is intensively applied to obtain related formulas for expressing one $ \lambda $-Sheffer polynomial in terms of other $ \lambda $-Sheffer polynomials. In this paper, we study the connection between degenerate higher-order Daehee polynomials and other degenerate type of special polynomials. We present explicit formulas for representations of the polynomials using $ \lambda $-umbral calculus and confirm the presented formulas between the degenerate higher-order Daehee polynomials and the degenerate Bernoulli polynomials, for example. Additionally, we investigate the pattern of the root distribution of these polynomials.
Closure properties for second-order $ \lambda $-Hadamard product of a class of meromorphic Janowski function
Authors: He Tao , Li Shu-Hai , Ma Li-Na , Tang Huo
Published: March 2023

In this paper, we define second-order $ \lambda $-Hadamard product of a class of meromorphic Janowski function and study the closure properties of the above product.
A lightweight CNN-based knowledge graph embedding model with channel attention for link prediction
Authors: Zhou Xin , Guo Jingnan , Jiang Liling , Ning Bo , Wang Yanhao
Published: March 2023

Knowledge graph (KG) embedding is to embed the entities and relations of a KG into a low-dimensional continuous vector space while preserving the intrinsic semantic associations between entities and relations. One of the most important applications of knowledge graph embedding (KGE) is link prediction (LP), which aims to predict the missing fact triples in the KG. A promising approach to improving the performance of KGE for the task of LP is to increase the feature interactions between entities and relations so as to express richer semantics between them. Convolutional neural networks (CNNs) have thus become one of the most popular KGE models due to their strong expression and generalization abilities. To further enhance favorable features from increased feature interactions, we propose a lightweight CNN-based KGE model called IntSE in this paper. Specifically, IntSE not only increases the feature interactions between the components of entity and relationship embeddings with more efficient CNN components but also incorporates the channel attention mechanism that can adaptively recalibrate channel-wise feature responses by modeling the interdependencies between channels to enhance the useful features while suppressing the useless ones for improving its performance for LP. The experimental results on public datasets confirm that IntSE is superior to state-of-the-art CNN-based KGE models for link prediction in KGs.
Optimization of low thermal treatments to increase hydrophilic phenols in the Alperujo liquid fraction
Authors: Rodríguez M. , Cornejo V. , Rodríguez-Gutiérrez G. , Monetta P.
Published: March 2023

Hydrophilic phenols are the main bioactive compounds in alperujo. Among them, 3,4-Dihydroxyphenylglycol (DHPG), Hydroxytyrosol (HT) and Tyrosol (Ty), are the most relevant and deeply studied. These compounds exhibit high antioxidant capacity and a wide range of health benefits as well as technologically promising properties. Given that, their recovery represents an attractive opportunity to valorize this by-product. In this work low thermal treatments were applied to alperujo in order to obtain phenol-enriched liquid fractions. Optimization assays combining different levels of temperature (30 to 90 ºC), time (60 to 180 min) and water content (70 to 90%), followed by response surface methodologies were performed. The results indicated that by applying optimal conditions, is possible to obtain theoretical yields of Total phenols, DHPG, HT and Ty of 2.4, 957.8, 3.4 and 6.4 times greater, respectively, than raw dry alperujo. Interestingly, all the evaluated conditions can be reproduced with low investment in a standard olive oil industry.
Oxidative stability and compositional characteristics of oil from microwave irradiated black cumin seed under accelerated oxidation condition
Authors: Hossen J. , Abbas Ali M. , Hidayu Othman N. , Md Noor A.
Published: March 2023

The present work evaluated the impact of microwave pre-treatment on the storage stability, fatty acids and triacylglycerol contents in black cumin seed oil (BCO) during storage at 62 ºC. During storage, the oxidative indicator values (free acidity, peroxide value, p-anisidine value, TOTOX, specific extinctions and thiobarbituric acid) for the oils increased faster in untreated oil samples than in the microwaved samples. The degradation rate of polyunsaturated fatty acids (PUFAs) and triacylglycerol species (LLL and OLL) during storage were higher in untreated samples compared to treated ones, indicating that oxidation proceeded more slowly in the treated samples. During storage, the generation of hydroperoxides, their degradation and the formation of secondary oxidation products as investigated by FTIR, were lower in the treated oils. In conclusion, microwave pre-treatment prior to oil extraction reduced the oxidative degradation of oil samples, thereby increasing the storage stability of BCO.
Social Aesthetic Goods and Aesthetic Alienation
Authors: Cross Anthony
Published: March 2023

The aesthetic domain is a social one. We coordinate our individual acts of creation, appreciation, and performance with those of others in the context of social aesthetic practices. More strongly, many of the richest goods of our aesthetic lives are constitutively social; their value lies in the fact that individuals are engaged in joint aesthetic agency, participating in cooperative and collaborative project that outstrips what can be realized alone. I provide an account of nature and value of two such social aesthetic goods—aesthetic communities and aesthetic traditions—and further argue that such goods are a core constituent of an aesthetically good life. At the same time, I argue that the ideals of the dominant theory of aesthetic value, aesthetic value hedonism, are incompatible with a full commitment to these social aesthetic goods; the hedonist is thereby alienated from the other participants within aesthetic communities and traditions. This sets up a dilemma for the hedonist: either the hedonist must bite the bullet, accepting that the theory leads to a problematic form of aesthetic alienation; or, we must reject aesthetic value hedonism and adopt a different theory of aesthetic value which accommodates the value of social aesthetic goods. I argue that we should take the second horn of the dilemma.
Design of a SWOT Analysis Model and Suggestions for E-HRM Adoption
Authors: Hu Shi
Published: March 2023

The purpose of this article is to design a new SWOT model in which the strengths, weaknesses, opportunities, and challenges are identified to gain insights into e-HRM adoption by organizations. Some suggestions are proposed for successful e-HRM adoption based on the reformulation of attitude theory. In the area of e-HRM adoption by the organizations' scenario, the SWOT analysis method still lacks enough attention. In this chapter, SWOT analysis is applied to the e-HRM adoption by organizations. Further, suggestions are prompted and grounded in the reformulation of attitude theory. At last, some insights are gained for better strategic HRM achievements multiple industries in an optimum way.
Warehouse Management Systems
Authors: Smith Alan D.
Published: March 2023

In this article, a qualitative business mini-case study concerning issues surrounding warehouse management systems and supply chain management techniques are implemented at two very different Pittsburgh-area companies. The increasing importance of supply chains as it relates to selection and management of real-time data to improve its overall efficiency and proactiveness are briefly highlighted through the literature. This chapter showcases some of these techniques developing into integrated management tools. It is hoped as business firms enter into deeper manufacturer/supplier relationships. These relationships will change from being skeptical and hostile to being mutually cooperative and dependent on one another.
An Efficient Code-Embedding-Based Vulnerability Detection Model for Ethereum Smart Contracts
Authors: Xu Zhigang , Chen Xingxing , Dong Xinhua , Han Hongmu , Yan Zhongzhen , Ye Kangze , Li Chaojun , Zheng Zhiqiang , Wang Haitao , Zhang Jiaxi
Published: March 2023

Efficient and convenient vulnerability detection for smart contracts is a key issue in the field of smart contracts. The earlier vulnerability detection for smart contracts mainly relies on static symbol analysis, which has high accuracy but low efficiency and is prone to path explosion. In this paper, the authors propose a static method for vulnerability detection based on deep learning. It first disassembles Ethereum smart contracts into opcode sequences and then converts the vulnerability detection problem into a natural language text classification problem. The word vector method is employed to map each opcode to a uniform vector space, and the opcode sequence matrix is trained by the TextCNN method to detect vulnerabilities. Furthermore, a code obfuscation method is given to enhance and balance the dataset, while three different opcode sequence generation methods are proposed to construct features. The experimental results verify that the average prediction accuracy of each smart contract exceeds 96%, and the average detection time is less than 0.1 s.
Telecommuting Practices and Trends in the Digital Transformation
Authors: Makori Elisha Ondieki , Mauti Norah Osebe
Published: March 2023

The paper investigated insights of telecommuting practices and trends in the digital transformation. Critical objectives were to find the priorities behind telecommuting developments, examine disruption technologies and trends to transform and advance virtual teleworking practices, determine sustainable strategies and programmes for telecommuting arrangements, and explore lessons learned for future prospects from remote working practices. Teleworking practices have opened and expanded economies and business opportunities in organizations worldwide. Trending digital innovations advancing telecommuting in the knowledge economy include internet of things, enterprise mobility, cloud solutions, and blockchain. Robust technological infrastructure, management, communication, and cultural trust are among the top strategies for sustaining telecommuting programmes. In the post-COVID-19 world, telecommuting is fundamental and mandatory, and therefore, leaders, people, organizations, professionals, and communities have a lot to gain from the practice.
Evaluation of a beach volleyball skill instrument for the line shot attack
Authors: Giatsis George , Lola Afroditi , Hatzimanouil Dimitris , Tzetzis George
Published: March 2023

This study aimed to develop a test for measuring athletes’ performance. Logical, content, construct, criterion validity, as well as reliability, were examined. Three beach volleyball experts evaluated how well the test evaluates the shot skill accuracy according to their judgment (logical validity). A group of eight beach volleyball experts analyzed the test and rated it on a scale of 1 to 7 regarding the relevance of the content as a measure of beach volleyball athlete’s accuracy, the average score was calculated at 6.75 (SD=0.46) (content validity). 60 beach volleyball players divided into three equal groups of novices, intermediates, and experts were asked to undergo the test on two separate days. A one-way ANOVA between the three groups was performed, which indicated that the mean scores of the three groups differed significantly (p<0.001 for both days): experts achieved better scores than intermediates who in turn scored better than novices (construct validity). The athletes’ scores were correlated with their proficiency level, using the Pearson Correlation test, which indicated very high positive (Day-1: r=0.956, n=60, p<0.001; Day-2: r=0.953, n=60, p<0.001) (criterion validity). The intraclass correlation coefficient was calculated between Day-1 and Day-2 and was found equal to 0.980 for average measures (p<0.001) and 0.961 for single measures (p<0.001). In conclusion, the requirements for logical, content, construct, criterion validity, and reliability have been met. Therefore, the line shot attack test can be used as a valid and reliable measurement instrument for evaluating the performance of beach volleyball athletes.
TLR5-Derived, TIR-Interacting Decoy Peptides to Inhibit TLR Signaling
Authors: Javmen Artur , Zou Jun , Nallar Shreeram C , Szmacinski Henryk , Lakowicz Joseph R , Gewirtz Andrew T , Toshchakov Vladimir Y
Published: March 2023

TLR5, which is activated by flagellin, plays an important role in initiating immune response to a broad spectrum of motile bacterial pathogens. TLRs induce intracellular signaling via dimerization of their TIR domains followed by adapter recruitment through multiple interactions of receptor and adapter TIRs. Here, a library of cell-permeable decoy peptides derived from the TLR5 TIR was screened for TLR5 signaling inhibition in the HEK-Blue-mTLR5 reporter cell line. The peptide demonstrating the strongest inhibition, 5R667, corresponded to the second helix of the region between the third and fourth β-strands (helix C″). In addition to the TLR5-induced cytokine expression, 5R667 inhibited cytokine expression elicited by TLR4, TLR2, and TLR9. 5R667 also suppressed the systemic cytokine induction elicited by LPS administration in mice. 5R667 binding specificity was studied by time-resolved fluorescence spectroscopy in a cell-based assay. 5R667 demonstrated a multispecific binding pattern with respect to TIR domains: It bound TIRs of TLR adapters of the MyD88-dependent pathway, Toll/interleukin-1 receptor domain-containing adapter protein/MyD88 adapter-like (TIRAP) and MyD88, and also the TIR of TLR5. TR667, the peptide derived from the TIRAP region, which is structurally homologous to 5R667, demonstrated binding and inhibitory properties similar to that of 5R667. The surface-exposed residues within TIR regions represented by 5R667 and TR667 form motifs, which are nearly 90% conserved in vertebrate evolution and are distinctive of TLR5 and TIRAP TIR domains. Thus, we have identified an evolutionary conserved adapter recruitment motif within TLR5 TIR, the function of which can be inhibited by selective cell-permeable decoy peptides, which can serve as pan-specific TLR inhibitors.
Scanning Electron Microscopy coupled with Energy Dispersive Spectroscopy applied to the analysis of fibers and particles in tissues from colon adenocarcinomas
Authors: Croce Alessandro , Bertolotti Marinella , Crivellari Stefania , Amisano Marco , Nada Elisabetta , Grosso Federica , Cagna Laura , Rinaudo Caterina , Gatti Giorgio , Maconi Antonio
Published: March 2023

Background: The mineral phases regulated as “asbestos” have a well-known role in disease development in the respiratory tract (e.g. mesothelioma, pulmonary carcinoma, asbestosis), but it is not clear their role in cancer development in other body sites, as in colon-rectum tract. Materials and Methods: In this work, seven colon tissues (healthy and neoplastic portions and an area “bridge” between them) from patients affected by colon adenocarcinoma – and living in a highly asbestos-polluted area - have been digested and the inorganic residual components collected on polycarbonate filters analyzed by means of Scanning Electron Microscopy (SEM) with annexed an Energy Dispersive Spectroscopy (EDS) for elemental chemical analysis. Results: The obtained results allow us to characterize serpentine phases in two of the seven analyzed patients. Moreover, calcium phosphate phases and other metal-rich particles have been observed inside the samples. Conclusions: SEM/EDS allowed us to morphologically observe and chemically analyze not only asbestos phases, but also other inorganic particles inside tissues deriving from colon adenocarcinomas.
Cellular Dormancy in Cancer: Mechanisms and Potential Targeting Strategies
Authors: Min Hye-Young , Lee Ho-Young
Published: March 2023

Cancer is a leading cause of disease-related mortality worldwide. Drug resistance is one of the primary reasons for the failure of anticancer therapy. There are a number of underlying mechanisms for anticancer drug resistance including genetic/epigenetic modifications, microenvironmental factors, and tumor heterogeneity. In the present scenario, researchers have focused on these novel mechanisms and strategies to tackle them. Recently, researchers have recognized the ability of cancer to become dormant because of anticancer drug resistance, tumor relapse, and progression. Currently, cancer dormancy is classified into “tumor mass dormancy” and “cellular dormancy.” Tumor mass dormancy represents the equilibrium between cell proliferation and cell death under the control of blood supply and immune responses. Cellular dormancy denotes the state in which cells undergo quiescence and is characterized by autophagy, stress-tolerance signaling, microenvironmental cues, and epigenetic modifications. Cancer dormancy has been regarded as the stem of primary or distal recurrent tumor formation and poor clinical outcomes in cancer patients. Despite the insufficiency of reliable models of cellular dormancy, the mechanisms underlying the regulation of cellular dormancy have been clarified in numerous studies. A better understanding of the biology of cancer dormancy is critical for the development of effective anticancer therapeutic strategies. In this review, we summarize the characteristics and regulatory mechanisms of cellular dormancy, introduce several potential strategies for targeting cellular dormancy, and discuss future perspectives.
Mean value of real Dirichlet characters using a double Dirichlet series
Authors: Čech Martin
Published: March 2023

We study the double character sum
$\sum \limits _{\substack {m\leq X,\\m\mathrm {\ odd}}}\sum \limits _{\substack {n\leq Y,\\n\mathrm {\ odd}}}\left (\frac {m}{n}\right )$
and its smoothly weighted counterpart. An asymptotic formula with power saving error term was obtained by Conrey, Farmer, and Soundararajan by applying the Poisson summation formula. The result is interesting because the main term involves a non-smooth function. In this paper, we apply the inverse Mellin transform twice and study the resulting double integral that involves a double Dirichlet series. This method has two advantages—it leads to a better error term, and the surprising main term naturally arises from three residues of the double Dirichlet series.
Conflict of Interest in the Expansion of Sofifi City in North Maluku, Indonesia
Authors: Djen Risman A.M , Qodir Zuly
Published: March 2023

Since its 24 years as the capital city of North Maluku province, Sofifi has not had the status of an autonomous region. This study aims to analyse the causes of the emergence of Sofifi's expansion conflict. This study uses a qualitative method with a case study approach. The data sources in this study came from journal articles and online media, which were processed using NVivo 12 Plus. The findings in this study indicate that Sofifi's conflict is a conflict of interest over the struggle for political power and the potential for natural resources by political elites. Even so, the community's demand for the division of Sofifi was based on three things: the reality of backwardness in development, the lack of public services, and the fact that Sofifi is the provincial capital. The emergence of demands for division has given rise to a response of rejection; the refusal is because of the announcement of the Sultanate of Tidore. In addition, there are differences in development governance between the provincial government and the Sultan of Tidore. Later, the Tidore City government also used the argument of a moratorium from the central government to dampen demands for division. This study's conclusion explains the interest in the struggle for power and natural resources behind the emergence of the Sofifi expansion conflict. This study confirms that regional autonomy conflicts tend to be caused by conflicts over power and natural resources that take advantage of ethnicity.
Credibilidade do Banco Central Brasileiro sob o Regime de Metas de Inflação
Authors: Dias de Carvalho Luciano , MAYARA LACORTE AMANDA
Published: March 2023

O objetivo deste trabalho consistiu em analisar a evolução da credibilidade do Banco Central brasileiro sob o Regime de Metas de Inflação. Com a finalidade de analisar essa evolução foi realizada uma mensuração direta da credibilidade do Banco Central a partir dos índices propostos por Mendonça (2004) e Sicsú (2002). Com base nesses índices o trabalho calculou a credibilidade do Banco Central brasileiro entre os períodos de julho de 2001 a agosto de 2014. A principal conclusão do trabalho é a de que houve uma forte e prolongada deterioração da credibilidade da autoridade monetária brasileira a partir de 2011 devido ao ciclo político-eleitoral e não em decorrência da crise financeira internacional ocorrida em 2007/2008.
Do trabalho escravo ao trabalho livre: numeramento e escolarização no Brasil, 1830-1940
Authors: Rodrigues Botelho Tarcísio
Published: March 2023

A abordagem histórica da desigualdade social brasileira é um tema central para a análise social e econômica, e entre os componentes da desigualdade e merece destaque a educação. A disseminação limitada da escolaridade até anos bem recentes tem impacto importante na formação de capital humano, mas ainda há muito a avançar nas abordagens históricas quantitativas sobre o tema. O objetivo do artigo é utilizar a chamada preferência por dígitos na declaração de idades como evidência indireta do numeramento e, consequentemente, da escolarização no Brasil em períodos recuados de sua história, nomeadamente o século XIX e a primeira metade do século XX. Os métodos empregados para obter os indicadores de numeramento foram o índice Whipple e o índice Z. Os dados são das províncias/estados de Minas Gerais e São Paulo em dois pontos separados por um século: a década de 1830 e o ano de 1940. O resultados mostraram um distanciamento entre Minas Gerais e São Paulo após um século de observação. Nesse mesmo período, evidenciou-se um distanciamento dos resultados observados no Brasil em relação a países da Europa para os quais se dispõe de dados semelhantes.Palavras-chave: desigualdade social; desigualdade educacional; numeramento; capital humano.