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Students’ learning developments of limits were studied in a calculus course. Theiractions, such as problem solving and reasoning, were considered traces of theirmental representations of concepts and were used to describe the developmentsduring a semester. Several students went through the course with a vague conception of limits which in some cases was wrong. A higher awareness about their mental
The paper presents a work in progress which is part of a larger study. Studentslearning analysis was investigated with the aim to find out how their concept images changed from the beginning of an analysis course to a year after the course. Their links between concepts were studied after the year had passed. The influence of the students’ pre-knowledge was durable and sometimes prevented students
We present a microchannel-based adaption of density-gradient centrifugation that allows the instantaneous, precise, and repeatable generation of a 1-dimensional mass-density gradient and determination of single-cell densities with integrated mass-density calibration.
An acoustofluidic device, consisting of a polymer chip with a long straight channel, coupled to a piezoelectric transducer is modeled numerically in three dimensions and compared to experimental results in terms of the electric admittance as well as the ability to focus particles. In our experiments we obtain good acoustic particle focusing at a frequency of f = 1.14 MHz with an actuation voltage
Monitoring a microservice system may bring a lot of benefits to development teams such as early detection of run-time errors and various performance anomalies. In this study, we explore deep learning (DL) solutions for detection of anomalous system's behavior based on collected monitoring data that consists of applications' and systems' performance metrics. The study is conducted in a collaboratio
Vårt syfte med detta kapitel är att beskriva och analysera krisförberedande arbeten i en landsortsby från en lokal risk- och sårbarhetsgrupps perspektiv samt tydliggöra olika drivkrafter, förutsättningar och relationer med myndigheter och andra aktörer. Underlaget för kapitlet utgörs av en intervju med representanter för den lokala gruppen i en socken i Kronobergs län, en enskild intervju med en n
När extraordinära händelser inträffar, handlar de akuta insatserna för de drabbade om livräddning och akutsjukvård. Annan praktisk hjälp t.ex. att åtgärda vattenförsörjning och återställa infrastruktur ingår i kommunernas och andra myndigheters insatser. Sedan slutet av 1980-talet har även det psykologiska och sociala stödet uppmärksammats. I samband med s.k. Kistaolyckan 1988, då skolelever dog i
In this paper we outline a method for systematically addressing needs assessment (QUALISEM-PEOPLE), alongside a case study of its use within a medium sized, German company. The method was designed in order to provide guidance in analysing skill and role competences, particularly when e-learning systems are being considered for training purposes. The method proved to be successful within the compan
The purpose of this paper is to examine how behavioural biases affect consumers’ response to energy-use information provided through smart meters (SM). We take insights from behavioural economics and carry out two real-life experiments with SMs and electricity users. The experiments were conducted in Copenhagen (Denmark) to identify and assess the potential of two economic behavioural biases, sali
Various studies have highlighted older persons' problems in potentially failing to keep pace with developments in information technology and the latest technologies that prevent physical and social loss. In contrast to such studies that treat users as static and technology as changing, it's important to understand the use of technology can change over time. For example, older persons have used tec
