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Students’ attitudes to mathematics and performance in limits of functions

The main aim of this article is to discuss the attitudes to mathematics of students taking a basic mathematics course at a Swedish university, and to explore possible links between how well such students manage to solve tasks about limits of functions and their attitudes. Two groups, each of about a hundred students, were investigated using questionnaires, field notes and interviews. From the resu

Limits of functions: Traces of students’ concept images

Students at a Swedish university were subjects in a study about learning limits of functions. The students' perceptions were investigated in terms of traces of concept images through interviews and problem solving. The results imply that most students' foundations were not sufficiently strong for them to understand the concept of limit well enough to be able to form coherent concept images. The tr

The impact of different fixatives on immunostaining of lung adenocarcinomas in pleural effusion cell blocks

BACKGROUND: Cell blocks (CBs) are widely used for biomarker analyses such as immunostaining. Although immunohistochemistry on formalin-fixed paraffin-embedded tissues is standardized, there are multiple preparation methods and fixatives for cytology. Our objective was to investigate the effect of different common fixatives on the immunoreactivity of pleural effusion CBs with metastatic lung adenoc

Leveraging agroforestry for bioenergy security in Sub-Saharan Africa and Southeast Asia

Biomass is often viewed as a primitive source of energy that needs to be modernized. However, itis unlikely that preferred modern energy sources will displace traditional biomass-based energyin the near term, especially in rural Africa and southeast Asia (FAO 2017). Demand for sustainablysourced biomass is likely to increase as the world moves away from fossil fuel dependence andtransitions to sus

Online Harassment Against Journalists : A Socio-Legal and Working-Life Study of the Challenges and Impacts in Swedish Journalism

Populärvetenskaplig sammanfattningIntroduktionI dagens digitala era har sociala medier och internet blivit centrala plattformar för nyhetsförmedling och offentlig debatt. Denna utveckling har främjat snabbare informationsspridning och ökat engagemang i samhällsfrågor. Samtidigt har det också medfört en ökning av negativa påtryckningar i form av trakasserier, hat och allmänt ogillande, särskilt rikIntegrating socio-legal analysis and working life science, this compilation thesis aims to enhance the understanding of how the evolving digital landscape—particularly the rise of online harassment—influences journalism and its potential to foster healthy public discourse. Additionally, the thesis seeks to advance the field of socio-legal studies by examining the interplay between digital transfor

Impact of transit catchment size on the integration of shared e-scooters in the public transport system

E-scooter sharing has been commonly used to integrate public transport systems in many cities worldwide. Accurately modeling integration between shared e-scooters and public transport is important for multi-modal urban transportation development and management. However, the effects of catchment size are scarcely considered while modeling their integration by widely adopting the method based on the

On Modeling and Detecting Trojans in Instruction Sets

Amid growing concerns about hardware security, comprehensive security testing has become essential for chip certification. This paper proposes a deep-testing method for identifying Trojans of particular concern to middle-to-high-end users, with a focus on illegal instructions. A hidden instruction Trojan can employ a low-probability sequence of normal instructions as a boot sequence, which is foll

Contradictions at work: Navigating relational autonomy and caste in Delhi, India

Ethnographic insights into people’s working lives can help us envision social policy to build dignified workspaces. This article explores the interlinkages between work and social protection, by drawing attention to two dimensions of pheriwale’s everyday working lives: first, how they relate to their work, and second, how they are situated within the Indian welfare context. Pheriwale are a group o

An exploratory open-label multicentre phase I/II trial evaluating the safety and efficacy of postnatal or prenatal and postnatal administration of allogeneic expanded fetal mesenchymal stem cells for the treatment of severe osteogenesis imperfecta in infants and fetuses: the BOOSTB4 trial protocol

Introduction Severe osteogenesis imperfecta (OI) is a debilitating disease with no cure or sufficiently effective treatment. Mesenchymal stem cells (MSCs) have good safety profile, show promising effects and can form bone. The Boost Brittle Bones Before Birth (BOOSTB4) trial evaluates administration of allogeneic expanded human first trimester fetal liver MSCs (BOOST cells) for OI type 3 or severe

Embedded Tutorial: Access to On-chip Instruments via Functional Ports

Semiconductor technology constantly advances, enabling integrated circuits (ICs) with increasingly numerous, faster, and smaller transistors. While this progress offers many benefits, it also presents new challenges, such as tighter margins, wear-outs, and process variations. To effectively tackle these challenges, the conventional approach of using external test instruments during manufacturing t

TFET Circuit Configurations Operating below 60 mV/dec

Tunnel Field-Effect Transistors (TFETs) offer more energy efficient alternative to CMOS for design of low power circuits. In spite of this potential, circuits based on TFETs have not been experimentally demonstrated so far. In this letter, we explore TFET fabrication and basic functionality of n-TFET based circuits in the following configurations: a current mirror, a diode-connected inverter, and

Reaction: Circular Chemical Imaginaries

It is irrefutable that the material value chains of the modern economy need to become more circular to mitigate not only climate change but also biodiversity loss and pollution associated with increasing use of natural resources. Contributions to these impacts, known as the triple planetary crisis, occur at all stages of product value chains, from primary production to use stages and ineffective e

Responsibility before freedom : closing the responsibility gaps for autonomous machines

The introduction of autonomous machines (AMs) in human domains has raised challenging questions about the attribution of responsibility; referred to as the responsibility gap. In this paper, we address the gap by arguing that entities should not be granted the freedom of action unless they can also recognise the same right for others—and be subject to blame or punishment in cases of undermining th