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Analysis of Long-Term Impact of Maintenance Policy on Maintenance Capacity Using a Time-Driven Activity-Based Life-Cycle Costing

Orlando Durán, Paulo Afonso, Vinicius Minatogawa • Mathematics (2020)

In capital-intensive industries, physical assets and maintenance activities play a relevant and strategic role in terms of providing operational continuity and business sustainability. As a result, maintenance support structures are highly ...

DOAJ Open Access (DOAJ) DOI: 10.3390/math8122208

Reasoning, Affectivity and School Performance at the end of Portuguese Elementary Education: Which Variables To Consider?

Cristina Costa-Lobo, Joana Matamá, Daniela Nascimento • Paidéia (Ribeirão Preto) (2020)

Abstract Elementary education is a stage in which children and adolescents develop reasoning and affectivity, variables often associated with school performance. This study aims to analyze the relationship between reasoning, affectivity and...

DOAJ Open Access (DOAJ) DOI: 10.1590/1982-4327e3008

Weight-perception-based fixed and variable admittance control algorithms for unimanual and bimanual lifting of objects with a power assist robotic system

S M Mizanoor Rahman, Ryojun Ikeura • International Journal of Advanced Robotic Systems (2018)

Weight-perception-based fixed admittance control algorithm and variable admittance control algorithm are proposed for unimanual and bimanual lifting of objects with a power assist robotic system. To include weight perception in controls, th...

DOAJ Open Access (DOAJ) DOI: 10.1177/1729881416678131

Problem-Based Tasks in Mathematics Learning: Opportunities and Challenges for Teachers

Sri Suryanti, Toto Nusantara, I Nengah Parta, Santi Irawati • JTAM (Jurnal Teori dan Aplikasi Matematika) (2023)

Mathematics education and teaching should not only include routine tasks; but tasks that need practice and memorization are mathematically more prosperous and more difficult because they promote problem-solving, investigation, and the disco...

DOAJ Open Access (DOAJ) DOI: 10.31764/jtam.v7i2.12864

What is mathematics, really?

• Choice Reviews Online (1998)

Most philosophers of mathematics treat it as isolated, timeless, ahistorical, inhuman. Reuben Hersh argues the contrary, that mathematics must be understood as a human activity, a social phenomenon, part of human culture, historically evolv...

OPENALEX DOI: https://doi.org/10.5860/choice.35-5132

Creativity: The Essence of Mathematics

Eric L. Mann • journal for the education of the gifted (2006)

For the gifted mathematics student, early mastery of concepts and skills in the mathematics curriculum usually results in getting more of the same work and/or moving through the curriculum at a faster pace. Testing, grades, and pacing overs...

OPENALEX DOI: https://doi.org/10.4219/jeg-2006-264

Ethanolic extract of black soldier fly (Hermetia illucens L.) larvae for wound healing in mice (Mus musculus L.)

Darman Agung Sandakila, Gracetia Devita Hadi, Riska Gultom, Seni Samalele et al. • Aceh Journal of Animal Science (2024)

The Black Soldier Fly (Hermetia illucens L.) or BSF is one of a group of insects that has a length of 15-20 mm originating from America. The larvae of the BSF has a high protein content (44.26%), which has great potential in treating wound ...

DOAJ Open Access (DOAJ) DOI: 10.13170/ajas.9.3.42024

Internal Decoupling in Nonlinear Process Control

Jens G. Balchen, Bernt Lie, Ingar Solberg • Modeling, Identification and Control (1988)

A simple method has been investigated for the total or partial removal of the effect of non-linear process phenomena in multi-variable feedback control systems. The method is based upon computing the control variables which will drive the p...

DOAJ Open Access (DOAJ) DOI: 10.4173/mic.1988.3.3

Mathematical Reasoning

• Routledge eBooks (2013)

Contents: Preface. Part I: Introduction. L.D. English, Analogies, Metaphors, and Images: Vehicles for Mathematical Reasoning. Part II: Cognitive Foundations for a Mind-Based Mathematics. G. Lakoff, R.E. Nunez, The Metaphorical Structure of ...

OPENALEX DOI: https://doi.org/10.4324/9780203053485

A Fractional-Order Complexity Framework for Misinformation Propagation With Fact-Checking Saturation and Social Vulnerability Dynamics

Shewafera Wondimagegnhu Teklu, M. A. Abdelkawy, Waleed Adel • Complexity (2026)

Misinformation spreads through communities in ways that resemble infectious diseases, but existing mathematical models often miss three real-world complexities: People remember past information (memory effects), some folks are more easily f...

DOAJ Open Access (DOAJ) DOI: 10.1155/cplx/8861194

Obstetric complications in children with Attention Deficit/Hyperactivity Disorder and Learning Disability

Mamatha Bhat, Natalie Grizenko, Ben-Amor L, Ridha Joober • McGill Journal of Medicine (2020)

This study aims to determine whether children with ADHD and learning disabilities (LD) have a significant history of obstetrical complications when compared to children with ADHD but without LD. Methods: Sixty-four children aged 6 to 12 yea...

DOAJ Open Access (DOAJ) DOI: 10.26443/mjm.v8i2.502

Mathematical modeling of the COVID-19 pandemic with intervention strategies

Subhas Khajanchi, Kankan Sarkar, Jayanta Mondal, Kottakkaran Sooppy Nisar et al. • Results in Physics (2021)

Mathematical modeling plays an important role to better understand the disease dynamics and designing strategies to manage quickly spreading infectious diseases in lack of an effective vaccine or specific antivirals. During this period, for...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.rinp.2021.104285

A compact model for the home healthcare routing and scheduling problem

Roberto Montemanni, Sara Ceschia, Andrea Schaerf • EURO Journal on Computational Optimization (2025)

Home healthcare has become more and more central in the last decades, due to the advantages it can bring to both healthcare institutions and patients. Planning activities in this context, however, presents significant challenges related to ...

DOAJ Open Access (DOAJ) DOI: 10.1016/j.ejco.2024.100101

Solar heat transport analysis of Falkner Skan Casson ternary hybrid nanoparticles over a permeable wedge

Khan Mohsin, Sheheryar Shah, Amra Al Kenany, Meshal Shutaywi et al. • Discover Nano (2026)

Abstract In the modern era, energy has become a vital concern across all sectors, while efficient energy generation remains a significant challenge for scientists and engineers. To overcome this issue, researchers have developed ternary hyb...

DOAJ Open Access (DOAJ) DOI: 10.1186/s11671-026-04821-1

New Insights into Cd<sup>2+</sup>/Fe<sup>3+</sup> Co-Doped BiOBr for Enhancing the Photocatalysis Efficiency of Dye Decomposition under Visible-Light

Hong Sheng, Wei Wang, Rong Dai, Jing Ning et al. • Nanomaterials (2021)

Uniform flowerlike microspheres Cd2+/Fe3+ co-doped BiOBr were prepared with the aid of the microwave hydrothermal process. The results indicate that the degradation performance of Bi1−xCdxOBr and Bi1−xFexOBr are 1.31 and 2.05 times that of ...

DOAJ Open Access (DOAJ) DOI: 10.3390/nano11020423

Changing Movements in a Changing World: Modelling Early Pleistocene and Early Middle Pleistocene Climatic and Ecological Environments and Influences on Hominin Dispersal in Eurasia

Kamilla L. Lomborg, Carolina Cucart-Mora, Jan-Olaf Reschke, Christine Hertler et al. • Journal of Computer Applications in Archaeology (2026)

In a world of drastic climatic and ecological changes, our knowledge of how the environment influenced hominin behaviour is of the utmost importance. Archaeology plays a key role in this domain, as it is the only discipline that studies emp...

DOAJ Open Access (DOAJ) DOI: 10.5334/jcaa.212

Theories of Mathematical Learning

• Routledge eBooks (2013)

Contents: Preface. Part I: P. Cobb, Sociological and Anthropological Perspectives on Mathematics Learning. P. Cobb, B. Jaworski, N. Presmeg, Emergent and Sociocultural Views of Mathematical Activity. J. Voigt, Negotiation of Mathematical Me...

OPENALEX DOI: https://doi.org/10.4324/9780203053126