Filetype
Bats navigate the dark using echolocation. Echolocation is enhanced by external ears, but external ears increase the projected frontal area and reduce the streamlining of the animal. External ears are thus expected to compromise flight efficiency, but research suggests that very large ears may mitigate the cost by producing aerodynamic lift. Here we compare quantitative aerodynamic measures of fli
This paper studies the importance of the interdependences within platform-based markets. Specifically, the work examines the influence of complementary product portfolios on the adoption of platforms by individuals. The study analyzes data from a panel of 17 video game platforms in three regions (the US, Japan and Europe) for the period between 1989 and 2011. The results suggest that platform adop
This chapter discusses the increasing tendency to remove street art from its original site for personal gain. It further explores whether/how copyright claims can be an effective means of preventing such extractions.
Two basic routes for planetesimal formation have been proposed over the last decades. One is a classical 'slow-growth' scenario. Another one is particle concentration models, in which small pebbles are concentrated locally and then collapse gravitationally to form planetesimals. Both types of models make certain predictions for the size spectrum and internal structure of newly born planetesimals.
The ISO22400 standard defines key performance indicators for manufacturing operation management. Its visionary goal is to be applicable to all industry types, regardless the production methodology and the process configuration. Pursuing this objective, a challenging trade-off between generality and specificity in the definitions must be found. In the cited standard, the former approach has been pr
Critical technical infrastructures constitute the backbone of society by providing essential services to vital societal functions and the community at large, hence it is of essence that these are resilient. Critical infrastructures, e.g. power systems, telecommunication systems and railway systems, are designed and operated based on different philosophies of where to put the resilience emphasis, r
A nonlinear autotuning regulator algorithm is obtained via a direct combination of the Åström-Hägglund algorithm for the linear case [1] with the sinusoidal-input describing function (SIDEF) approach to nonlinear compensator synthesis of Taylor and Strobel [2]. The basic approach for linear autotuning proceeds as follows: a. install a relay with hysteresis in series with the unknown plant to be co
BACKGROUND: The dual mobility acetabular cup (DMC) was designed to reduce prosthetic instability and has gained popularity for both primary and revision total hip arthroplasty (THA). We compared the risk of revision of primary THA for primary osteoarthritis between patients treated with a DMC and those who received a metal-on-polyethylene (MoP) or ceramic-on-polyethylene (CoP) bearing. METHODS: A
We fit the rotation curves of isolated dwarf galaxies to directly measure the stellar mass-halo mass relation (M*-M200) over the mass range 5 × 105 ≲ M*/M⊙ ≲ 108. By accounting for cusp-core transformations due to stellar feedback, we find a monotonic relation with little scatter. Such monotonicity implies that abundance matching should yield a similar M*- M200 if the cosmological model is correct
Peace negotiations and their outcomes have long-term repercussions for post-conflict politics and societies. Yet, one of the most striking patterns of contemporary peace diplomacy is the gross underrepresentation of women at the negotiation table, which reflects the gendered nature of diplomacy as an institution. The research question raised in this chapter concern how gender impacts peace negotia
That export-led industry sets the wage norm for the whole economy, acting as the “wage leader”, is a celebrated part of the Swedish wage bargaining and labour market model. Export- led wage leadership is assumed to lead to controlled, non-inflationary wage increases, as wages are set with international competition in mind. This paper maps the origins of this export industry wage leadership model,
UV (240-370 nm) and IR (3200-1500 cm-1) absorption cross-sections of HCHO, HCDO, and DCDO in abath gas of N2 at atmospheric pressure and 296 K are reported from simultaneous measurements in the twospectral regions. Cross-sections were placed on an absolute scale through quantitative conversion offormaldehyde to CO and HCOOH by titration with Br atoms, also monitored by FTIR. The integrated UVabsor
The bacterial superantigen (SAg) staphylococcal enterotoxin A (SEA) is a potent inducer of CTL activity and cytokine production in vivo. To engineer SAg for cancer immunotherapy, we genetically fused SEA to a Fab fragment of the C215 tumor-reactive antibody. Strong reduction of lung metastasis was seen in mice carrying established lung metastases of the poorly immunogenic B16-C215 melanoma after F
Scaling up of Lipozyme-catalyzed ester synthesis with >99% conversion and a reflux trap to remove product water from the reaction mixture is reported. Ethyl stearate was synthesized in 2000-g batch reactions from technical stearic acid. The ethyl stearate was purified to 97% by crystallization and interesterified with sunflower seed oil by means of a lipase catalyst to investigate reaction paramet
A 2H n.m.r. relaxation study of sodium dodecyl sulphate (SDS) in the micellar phase is presented. The surfactant is specifically deuterated in the α-, γ- and ω-positions. Relaxation data are obtained at two temperatures and at three field strengths, and show a dependence on the field strength. The data are analysed with the 'two-step' model of relaxation, and the fast correlation times as well as
BACKGROUND: Patients with new-onset atrial fibrillation in relation to infection are frequent in emergency departments (ED) and may require antithrombotic therapy due to increased risk of stroke. Our objective was to describe the one-year risk of stroke in ED patients with infection, new-onset atrial fibrillation and no antithrombotic therapy.METHODS: Population-based cohort study at four EDs in D
A full-duplex relay enhances the end-to-end spectral efficiency compared to a half-duplex relay, provided that the loop-back interference at relays is managed well. In order to study the feasibility of the full-duplex relay, it is crucial to measure and model the loop-back interference channels. This paper presents a measurement campaign of these channels for outdoor-to-indoor communications. A co
In this paper, the vascular sounds of the arteriovenous fistula at the anastomosis and five centimeters downstream the anastomosis were analyzed. The analysis of the sounds was based on features extracted from the power spectral density (PSD) and wavelet decomposition. The database consists of 15 recordings at the anastomosis and 15 reference recordings obtained from 15 patients. The results showe
The Forum Romanum constituted the religious, political, economic and administrative centre of Rome for more than a millennium. During this time it went through several changes. It transformed from a liminal zone in the periphery of the Iron Age settlements into a communal space and sacred ground; later into an arena for political struggle and civic ambition; and finally into a showcase for Imperia
