Sökresultat

Filtyp

Din sökning på "*" gav 529908 sökträffar

EXTENDED CALCULATIONS with SPECTROSCOPIC ACCURACY : ENERGY LEVELS and TRANSITION PROPERTIES for the FLUORINE-LIKE ISOELECTRONIC SEQUENCE with Z = 24-30

We have performed extensive multiconfiguration Dirac-Hartree-Fock calculations and second-order many-body perturbation calculations for F-like ions with Z = 24-30. Energy levels and transition rates for electric dipole (E1), electric-quadrupole (E2), electric-octupole (E3), magnetic dipole (M1), and magnetic-quadrupole (M2) transitions, as well as radiative lifetimes, are provided for the lowest 2

Superior visual performance in nocturnal insects : Neural principles and bio-inspired technologies

At night, our visual capacities are severely reduced, with a complete loss in our ability to see colour and a dramatic loss in our ability to see fine spatial and temporal details. This is not the case for many nocturnal animals, notably insects. Our recent work, particularly on fast-flying moths and bees and on ball-rolling dung beetles, has shown that nocturnal animals are able to distinguish co

Long term stability of time preferences and the role of the macroeconomic situation

We look at the stability of survey based subjective time preferences over time using data from a Dutch panel survey with a long time horizon and find that the ranking of individual time preferences is stable. Simple observation of the aggregated measured time preferences reveals instability in aggregated preferences. In order to shed light on this instability we look at the relationship between th

Driven self-Assembly

During the past few years we have seen an impressive number of studies using directed self-Assembly in soft matter research with a surprisingly wide range of underlying aims and goals. Here we will focus on field-driven colloidal selfassembly, and demonstrate how we can apply external electromagnetic fields in order to modulate the intrinsic interparticle interactions and induce additional directi

Transverse coupled-bunch instability thresholds in the presence of a harmonic-cavity-flattened rf potential

A small vacuum chamber aperture is a present trend in the design of future synchrotron light sources. This leads to a large resistive-wall impedance that can drive coupled-bunch instabilities. Another trend is the use of passively driven cavities at a harmonic of the main radio frequency to lengthen the electron bunches in order to increase the Touschek lifetime and reduce emittance blowup due to

Comparison of adjuvant gemcitabine and capecitabine with gemcitabine monotherapy in patients with resected pancreatic cancer (ESPAC-4) : A multicentre, open-label, randomised, phase 3 trial

Background: The ESPAC-3 trial showed that adjuvant gemcitabine is the standard of care based on similar survival to and less toxicity than adjuvant 5-fluorouracil/folinic acid in patients with resected pancreatic cancer. Other clinical trials have shown better survival and tumour response with gemcitabine and capecitabine than with gemcitabine alone in advanced or metastatic pancreatic cancer. We

Transparency and accountability lost? : Full cost accounting reporting in the Swedish municipal solid waste business

Purpose: The aim of this paper is to explore the causes of variations in financial accounting and disclosure practices in a municipal setting highly influenced by governance reforms - the Swedish municipal waste management sector. This focus is motivated by the claim that recent governance reforms have made the organization of public services delivery more diversified and fragmented, which may hav

Improving practical sensitivity of energy optimized wake-up receivers : Proof of concept in 65nm CMOS

We present a high performance low-power digital base-band architecture, specially designed for an energy optimized duty-cycled wake-up receiver scheme. Based on a careful wake-up beacon design, a structured wake-up beacon detection technique leads to an architecture that compensates for the implementation loss of a low-power wake-up receiver front-end at low energy and area costs. Design parameter

Nonlinear thermoelectric response due to energy-dependent transport properties of a quantum dot

Quantum dots are useful model systems for studying quantum thermoelectric behavior because of their highly energy-dependent electron transport properties, which are tunable by electrostatic gating. As a result of this strong energy dependence, the thermoelectric response of quantum dots is expected to be nonlinear with respect to an applied thermal bias. However, until now this effect has been cha

The income penalty of farming and fishing : Results from a sibling approach

This study explores an apparently paradoxical finding in farming and fishing: low economic returns, but a high rate of occupational transmission across generations of farmers and fishers. Using a sibling model containing 11,924 children of Swedish farmers and fishers in 2012, we estimate that farmers' sons who became farmers received 28 per cent lower income than same-sex siblings with a career ou

Monash chemical yields project (Monχey) element production in low- and intermediate-mass stars

The Monχey project will provide a large and homogeneous set of stellar yields for the low- and intermediate- mass stars and has applications particularly to galactic chemical evolution modelling. We describe our detailed grid of stellar evolutionary models and corresponding nucleosynthetic yields for stars of initial mass 0.8 M⊙ up to the limit for core collapse supernova (CC-SN) ≈ 10 M⊙. Our stud

No title

Heartbeat. Hjertets pulserende rytme, åndedrættets tilhørende kadence, musikken inden for og uden for vores hoveder – lyde sætter spor og strukturerer vores liv indefra og ud, udefra og ind. Anri Sala skaber filmværker, der udfolder denne sammenhæng mellem liv, lyd og billeder. Det indbyrdes samspil kan opleves på Louisiana i en opsætning af fire film, der indgår i en dialog med hinanden og udstil

The advantages of spark discharge generation for manufacturing of nanoparticles with tailored properties

The number of nanoparticle-based products on the market is expected to increase considerably during the coming decades. For this to happen a solid supply of high-quality nanoparticles is needed. For metal nanoparticles no large-scale manufacturing method exists today but production using spark discharge generation is believed to be one of the most suitable candidates. Spark discharge generation of

Review and Benchmarking of Alternative Fuels in Conventional and Advanced Engine Concepts with Emphasis on Efficiency, CO2, and Regulated Emissions

Alternative fuels have been proposed as a means for future energy-secure and environmentally sustainable transportation. This review and benchmarking show that several of the alternative fuels (e.g. methanol, ethanol, higher alcohols, RME, HVO, DME, and biogas/CNG) work well with several different engine concepts such as conventional SI, DICI, and dual fuel, and with the emerging concepts HCCI, RC

The behavioural ecology of animal movement - Reflections upon potential synergies

Animal movement acts at multiple scales: it can shape the destiny of individuals and populations, govern community and ecosystem structure, and influence evolutionary processes and patterns of biodiversity. Recent technological advances, such as the revolutionary developments in tracking technology and remote sensing, provide fresh insights and the possibility to collect detailed data on where and

Portable Audio Design

The chapter presents a methodological approach to the early process of producing portable audio design. The chapter high lights audio walks and audio guides, but can also be of inspiration when working with graphical and video production for portable devices. The final products can be presented within online and physical institutional contexts. The approach focuses especially on the relationship t

Urban sound ecologies : An analytical approach to sound art as assemblage

Within recent years, there has been a renewed focus on sound in urban environments. From sound installations in public space to sound festivals in alternative settings, we find a common interest in sound art relating to the urban environment. Artworks or interventions presented in such contexts share the characteristics of site specificity. However, this article will consider the artwork in a broa