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Mirror symmetry of quantum Yang–Mills vacua and cosmological implications

We find an argument related to the existence of a Z 2 -symmetry for the renormalization group flow derived from the bare Yang–Mills Lagrangian, and show that the cancellation of the vacuum energy may arise motivated both from the renormalization group flow solutions and the effective Yang–Mills action. In the framework of the effective Savvidy’s action, two Mirror minima are allowed, with exactl

A life cycle approach to business performance measurement systems

Virtually every company has implemented a Business Performance Measurement System (BPMS) with the purpose of monitoring production and business performance and to execute the corporate strategy at all levels in a company. The purpose of this article is to shed light on common pitfalls related to the practical use of BPMS and further to present a life cycle model with the purpose of introducing str

Lofty ideals and lowly troubles among nursing home managers

This chapter explores how nursing home managers grapple with local manifestations of the wicked problems that plague elderly care. It shows the tension between managers' lofty ideals of high-quality, individualized care and their continuous struggle to handle very basic troubles that ultimately appear to be grounded in a lack of resources, such as high personnel turnover and staff complaints about

Addressing the possibility of normative conflicts around human rights : The concept of adaptation

This chapter provides the legitimacy of human rights as individual rights of all humans; and the justification of the universality of human rights. It deals with the legitimacy of the impact of the universality of human rights within religious and worldview-based communities. The chapter shows that the patterns of argumentation of different religious and worldview-based communities, or some groups

Arousal and awareness in a humanoid robot

We describe how an arousal system that controls the levels of awareness can be implemented in a robot. The different levels of awareness correspond to different states of consciousness and we argue that an artificial arousal system modeled after its biological counterpart has a useful function in controlling the cognitive processing of a brain-like cognitive architecture. The level of awareness de

How to avoid severe coronary vasoconstriction in potassium induced cardioplegia

Objectives. The aim of this study was to investigate how high K+ concentrations can be safely used in cardioplegic solutions without causing severe coronary artery vasocontraction. Design. Twenty-four 50 kg pigs were used. The distal part of the left anterior descending coronary artery was cut into ring segments and transferred into organ baths with Krebs solution bubbled with 95% O2 and 5% CO2. K

Detecting the True Extent of Introgression during Anthropogenic Hybridization

Hybridization among naturally separate taxa is increasing owing to human impact, and can result in taxon loss. Previous classification of anthropogenic hybridization has largely ignored the case of bimodal hybrid zones, in which hybrids commonly mate with parental species, resulting in many backcrossed individuals with a small proportion of introgressed genome. Genetic markers can be used to detec

Principles of niche expansion

Niche expansion is attained by adaptations in two generalized phenotypical traits - niche position and niche width. This gives room for a wide range of conceptual ways of niche filling. The niche variation hypothesis reduces the range by predicting that expansion occurs by increasing variation in niche position, which has been debated on empirical and theoretical grounds as also other options seem

Associations between leisure time physical activity and cardiovascular risk factors among older adults with long-term spinal cord injury

Study Design: This is a cross-sectional study. Objectives: To describe the association between cardiovascular risk factors (body mass index (BMI), waist circumference (WC), blood pressure, blood glucose and lipids) and leisure time physical activity (LTPA) in older adults with long-term spinal cord injury (SCI). Setting: Community settings, southern Sweden. Methods: Data from the baseline data col

Circular dichroism and angular deviation in x-ray absorption spectra of Dy2ScN@C80 single-molecule magnets on h-BN/Rh(111)

Endohedral fullerenes, such as Dy2ScN@C80, are single-molecule magnets with long relaxation times of their magnetization. An open and anisotropic 4f electron shell in the lanthanides (here Dy) imposes a magnetic moment that maintains its orientation at liquid-helium temperatures for macroscopic times. If these molecules shall be used as single-bit information storage elements or for quantum operat

Genital tract tears in women giving birth on a birth seat : A cohort study with prospectively collected data

Background: Birth positions may influence the risk of tears in the genital tract during birth. Birth positions are widely studied yet knowledge on genital tract tears following birth on a birth seat is inconclusive. Aim: The objective of this study was to describe the proportion of genital tract tears in women who gave birth on a birth seat compared to women who did not. Method: An observational c

Comparison between simulated and observed LHC beam backgrounds in the ATLAS experiment at Ebeam=4 TeV

Results of dedicated Monte Carlo simulations of beam-induced background (BIB) in the ATLAS experiment at the Large Hadron Collider (LHC) are presented and compared with data recorded in 2012. During normal physics operation this background arises mainly from scattering of the 4 TeV protons on residual gas in the beam pipe. Methods of reconstructing the BIB signals in the ATLAS detector, developed

Vane macrostructure of primary feathers and its adaptations to flight in birds

The selection pressures that drive flight feather morphology are poorly understood. Using a phylogenetic comparative approach and data from 178 species of birds, we investigated whether both position along the wing length and flight feather length affected vane structure. We found that barb density was lower on distal primaries than on proximal primaries of the leading feather vane. In contrast, oThe selection pressures that drive flight feather morphology are poorly understood. Using a phylogenetic comparative approach and data from 178 species of birds, we investigated whether both position along the wing length and flight feather length affected vane structure. We found that barb density was lower on distal primaries than on proximal primaries of the leading feather vane. In contrast, o

Performance and emissions of a series hybrid vehicle powered by a gasoline partially premixed combustion engine

This work evaluates the performance and emissions of the series hybrid vehicle concept powered by a gasoline partially premixed internal combustion engine. To do so, experimental data was collected from a Volvo VED-D4 Euro 6 four-cylinder compression ignition engine running under gasoline partially premixed combustion. Two series hybrid vehicle models were developed in GT-Power®, which were fed wi

Left Ventricular End-Systolic Eccentricity Index for Assessment of Pulmonary Hypertension in Infants

BACKGROUND: Pulmonary hypertension (PH) is a common problem in the neonatal intensive care unit and is associated with significant morbidity and mortality. The aim of this study was to identify a quantitative echocardiographic marker of septal curvature that can be used to accurately identify PH in NICU infants with concern for PH.METHODS: Echocardiograms of infants who were prematurely born and i

pKa Determination of a Histidine Residue in a Short Peptide Using Raman Spectroscopy

Determining the pKa of key functional groups is critical to understanding the pH-dependent behavior of biological proteins and peptide-based biomaterials. Traditionally, ¹H NMR spectroscopy has been used to determine the pKa of amino acids; however, for larger molecules and aggregating systems, this method can be practically impossible. Previous studies concluded that the C-D stretches in Raman ar

X-ray tracing, design and construction of an optimized optics scheme for CoSAXS, the small angle x-ray scattering beamline at MAX IV laboratory

A novel optical design for a flexible SAXS beamline at a modern synchrotron has been implemented for the CoSAXS beamline at the 3GeV ring at the MAX TV Laboratory. The performance of the beamline has been simulated through combined ray tracing and wave propagation with the code xrt taking into account the low emittance and highly coherent beam of MAX TV and the short inter-optics distances of the