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Previous studies have shown that measurements of beluga whale (Delphinapterus leucas) and bottlenose dolphin (Tur-siops truncatus) echolocation signals at off-axis angles may be well modeled using a Gaussian bell function or a chirped Gaussian function as envelope. In this paper, we apply a novel technique, the matched window reassignment, for investigation of a range of models of dolphin echoloca
ECG is susceptible to parasitic myopulses due to the overlapping frequency bandwidth of ECG and EMG. EMG signal has a bandwidth of about 20-500 Hz and overlaps with the ECG frequency range. i.e. 0.05-150 Hz. These interferences occur due to movement of muscles and respiratory actions during ECG recording. Removal of EMG noise from ECG is an important criterion for proper analysis of the signal. In
The kinetics of the buildup and decay of photoinduced birefringence was examined in a series of host-guest systems: azobenzene-containing crown ethers, differing in the size of the crowns, dissolved in a poly (methyl methacrylate) matrix. In all samples, the kinetics of the buildup of the birefringence was reasonably described by a sum of two exponential functions, the time constants being inverse
Different opinions about Mongolian prominence structure can be found in the literature. The most puzzling problem is the nature of lexical stress in this language, and neither its placement nor its phonetic nature have been given any final description. We have earlier performed an acoustic investigation of vowel durations, quality and fO to find if any of these three parameters functions as signa
In this rapid era of technology, speed of communication has become an important factor. To overcome this challenge, 5G/NR technology is being explored. One of the ways of doing this is by using the so called millimeter wave spectrum. In order to make usage of the mmWave spectrum, due to the high path loss it introduces, the beamforming technique is adopted. Beamforming is a method used in high fre
Slowed adaptation of the QT interval to sudden abrupt heart rate (HR) changes has been identified as a marker of ventricular arrhythmic risk. However, abrupt HR changes are difficult to induce in patients. Quantifying the QT adaptation time in gradual HR changes, as observed in ECGs recording during an exercise stress test, has been recently proposed. The time lag between the QT series and an inst
According to the 6th chapter, section 2(a) of the Children and Parents code, the best interest of the child shall constitute the main consideration in the determination of all questions concerning custody, residence and contact. Part of the assessment of the best interest of the child, given due weight in accordance with the age and maturity of the child, shall be the views of the child in questio
Cyber-Physical Systems (CPS) are integral to critical infrastructure, but their interconnected nature exposes them to sophisticated cyber threats. Traditional security mechanisms primarily focus on detecting direct manipulations of control signals or sensor data, leaving them vulnerable to more subtle attack vectors. This paper introduces a novel optimisation framework for modelling and executing
Quantum Cascade Lasers (QCLs) have since their invention in 1994 become a crucial source for mid-infrared and THz radiation. Mid-infrared QCLs have achieved room temperature operation while THz QCLs have not. As such, simulations are an important tool in order to achieve a THz QCL operational at room temperature. This work uses a simulation package based on a nonequilibrium Green’s function model
Place Branding and Public Diplomacy & The Journal of Communication Management ISK is home to two international journals: Place Branding and Public Diplomacy and the Journal of Communication Management. For more information please see below. The journal Place Branding and Public Diplomacy explores and explains the two related but distinct practices named in its title. 'Place branding' applies brand
https://www.isk.lu.se/forskning/publikationer/journals - 2026-07-09
Popular Abstract in Swedish Personer som arbetar med joniserande strålning inom t.ex. sjukvård, kärnteknik och forskning använder så kallade dosimetrar för att registrera hur mycket joniserande strålning (vilken stråldos) personen blivit utsatt för under ett arbetspass eller en arbetsmånad. Den stråldos som en dosimeter mäter ger ett mått på risken för eventuella sena hälsoeffekter i form av en ökIn the event of a radiation accident, it is crucial to make rapid estimates of the absorbed dose received by both emergency workers, so-called first responders, and members of the public. Today, only personnel in rescue teams responding to nuclear emergencies have access to individual dosemeters. To make accurate assessments of the radiological consequences of an emergency situation, methods of re
Sound and radio can be used to estimate the distance between a transmitter and a sender by correlating the emitted and received signal. Alternatively by correlating two received signals it is possible to estimate distance difference. Such methods can be divided into methods that are robust to noise and reverberation, but give limited precision and sub-sample refinements that are sensitive to noiseSound and radio can be used to estimate the distance between a transmitter and a sender by correlating the emitted and received signal. Alternatively by correlating two received signals it is possible to estimate distance difference. Such methods can be divided into methods that are robust to noise and reverberation, but give limited precision and sub-sample refinements that are sensitive to noise
This theme is concerned with the relevance and efficacy of educational methods adopted in dental schools while recognizing the influence of geopolitical issues in different countries and regions. Particular emphasis will be given to examples of best practices and innovations. Cognition and learning are dealt with in many different research areas such as education, psychology, cognitive sciences, b
Background: Cognitive functioning may have implications for engagement in daily occupationsamong people with schizophrenia.Objectives: This cross-sectional study explores relationships between time use assessed occupationalengagement and cognitive functioning among persons with schizophrenia.Methods: Thirty-nine participants from four mental health care services in Sweden participated.The Profile Background: Cognitive functioning may have implications for engagement in daily occupations among people with schizophrenia.Objectives: This cross-sectional study explores relationships between time use assessed occupational engagement and cognitive functioning among persons with schizophrenia.Methods: Thirty-nine participants from four mental health care services in Sweden participated. The Profi
Popular Abstract in English Life on earth has evolved countless forms, beautiful shapes and colors as well as astonishingly complex systems. Remarkably, all living creatures consist of cells, which themselves are build from the same basic set of molecules, most importantly nucleic acids (RNA and DNA), lipids and proteins. The latter are large macromolecules that fulfill a vast number of tasks; theThe three-dimensional structure of protein is encoded in its amino acid sequence. Modern structure prediction algorithms make it possible to predict the structure of small proteins using sequence information alone. We used the Fold-and-Dock algorithm, which is part of the Rosetta macromolecular modeling suite, for de novo structure prediction of coiled-coil proteins. Members of this protein family
Research facilities such as spallation sources and synchrotrons generate radiation for use in atomic-level or molecular-scale experiments. These facilities can be viewed as complex safetycritical systems. An important aspect of the safety management of such systems is the short safety education and training programme the users are required to undergo in order to gain facility access. As research oResearch facilities such as spallation sources and synchrotrons generate radiation for use in atomic-level or molecular-scale experiments. These facilities can be viewed as complex safety-critical systems. An important aspect of the safety management of such systems is the short safety education and training programme the users are required to undergo in order to gain facility access. As research
Hearing is our second most important sense. The main focus of a surveillance camera is obviously the video but the audio shouldn't be neglected. It is possible to hear what the camera can't see and what is said in a conversation can't be showed in a video. Therefore there are good reasons to always try and achieve the best audio possible. This is not an easy task since cameras are oper
