101 research outputs found

    Organisatoriska hinder vid miljöinvesteringar i familjeföretag

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    Det globala miljö- och klimathotet har gjort att företag i allt större utstrĂ€ckning försöker minska sin klimatpĂ„verkan. Genom miljöinvesteringar – investeringar som Ă€r Ă€mnade att minska miljöpĂ„verkan- kan företagen bĂ„de minska klimatpĂ„verkan och förbĂ€ttra sin image. Syftet med studien Ă€r att undersöka hur ett etablerat företag med vinstintresse arbetar med miljöinvesteringar som inkluderar ickemonetĂ€ra vĂ€rden. Den hĂ€r uppsatsen har anvĂ€nt sig av en kvalitativ forskningsansats dĂ€r en fallstudie har gjorts av ett tillverkningsföretag. Företaget har valt att vara anonymt, sĂ„ det pĂ„hittade namnet TIAB kommer att anvĂ€ndas. TIAB Ă€r ett familjeföretag som har funnits sedan 1940-talet. Den insamlade datan tyder pĂ„ att TIAB inte vĂ€rderar de ickemonetĂ€ra vĂ€rdena en miljöinvestering kan innebĂ€ra. Analysen identifierar tvĂ„ organisatoriska hinder för miljöinvesteringar inom TIAB. Det ena relaterar till företagets starka sociala institutioner och det andra till företagets absorptionskapacitet. Vidare tar uppsatsen upp olika attityder som företag kan ha till miljöinvesteringar samt möjliga förbĂ€ttringsĂ„tgĂ€rder som TIAB kan anvĂ€nda sig utav för att bĂ€ttre kunna arbeta med miljöfrĂ„gor. De tre miljöansvariga som intervjuas i uppsatsen har högre ambitioner för TIABs arbete med miljöfrĂ„gor Ă€n vad företaget stĂ„r för. Att TIAB Ă€r ett familjeföretag med en ledning som sedan grundandet har bestĂ„tt av familjemedlemmar, har resulterat i att en stark institutionalism har skapats. Uppsatsen visar att framförallt starka normer har bidragit till en mer defensiv hĂ„llning till miljöfrĂ„gor inom företaget. För att bryta dessa normer föreslĂ„s en förbĂ€ttring av företagets absorptionskapacitet i allmĂ€nhet.The global environmental and climate threats have increasingly led companies to make efforts to reduce their climate impact. Through environmental investments – capital investments that reduce climate impact- firms can both reduce their climate impact and improve their image. This study has used a qualitative approach where a case study has been made on a production company. The company has chosen to be anonymous, so the made up name of TIAB will be used. TIAB is a family owned business that has existed since the 1940s. The collected data indicates that indicates that TIAB does not value non-monetary values that an environmental investment can include. The essay finds that there are organizational barriers for environmental investments within TIAB. To illustrate these barriers, the essay will use two organization theories – “the new institutionalism and absorption capacity. Furthermore, the essay will enlighten different attitudes that companies can have towards environmental investments and show possible solutions that TIAB can use in order to improve their environmental work. The three environmental employees within TIAB that are interviewed have higher ambition than TIAB as a company, regarding environmental work. The fact that TIAB is a family owned business, with a management that has included family members since the start, may have resulted in strong institutionalism. The essay shows that norms have contributed to a defensive approach towards environmental work within TIAB. To breach these barriers TIAB has to work with absorption capacity in general and internal absorption capacity in particular

    Pulsed Electron Spin Resonance of an Organic Microcrystal by Dispersive Readout

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    We establish a testbed system for the development of high-sensitivity Electron Spin Resonance (ESR) techniques for small samples at cryogenic temperatures. Our system consists of a Niobium Nitride thin-film planar superconducting microresonator designed to have a concentrated mode volume to couple to a small amount of paramagnetic material, and to be resilient to magnetic fields of up to 400 mT. At 65 mK we measure high-cooperativity coupling (C≈19C \approx 19) to an organic radical microcrystal containing 101210^{12} spins in a pico-litre volume. We detect the spin-lattice decoherence rate via the dispersive frequency shift of the resonator. Techniques such as these could be suitable for applications in quantum information as well as for pulsed ESR interrogation of very few spins and could provide insights into the surface chemistry of, for example, the material defects in superconducting quantum processors.Comment: 8 pages 5 figure

    Coherent spin dynamics of rare-earth doped crystals in the high-cooperativity regime

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    Rare-earth doped crystals have long coherence times and the potential to provide quantum interfaces between microwave and optical photons. Such applications benefit from a high cooperativity between the spin ensemble and a microwave cavity -- this motivates an increase in the rare earth ion concentration which in turn impacts the spin coherence lifetime. We measure spin dynamics of two rare-earth spin species, 145^{145}Nd and Yb doped into Y2_{2}SiO5_{5}, coupled to a planar microwave resonator in the high cooperativity regime, in the temperature range 1.2 K to 14 mK. We identify relevant decoherence mechanisms including instantaneous diffusion arising from resonant spins and temperature-dependent spectral diffusion from impurity electron and nuclear spins in the environment. We explore two methods to mitigate the effects of spectral diffusion in the Yb system in the low-temperature limit, first, using magnetic fields of up to 1 T to suppress impurity spin dynamics and, second, using transitions with low effective g-factors to reduce sensitivity to such dynamics. Finally, we demonstrate how the `clock transition' present in the 171^{171}Yb system at zero field can be used to increase coherence times up to T2=6(1)T_{2} = 6(1) ms.Comment: 8 pages, 5 figure

    Integration of selectively grown topological insulator nanoribbons in superconducting quantum circuits

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    We report on the precise integration of nm-scale topological insulator Josephson junctions into mm-scale superconducting quantum circuits via selective area epitaxy and local stencil lithography. By studying dielectric losses of superconducting microwave resonators fabricated on top of our selective area growth mask, we verify the compatibility of this in situ technique with microwave applications. We probe the microwave response of on-chip microwave cavities coupled to topological insulator-shunted superconducting qubit devices and observe a power dependence that indicates nonlinear qubit behaviour. Our method enables integration of complex networks of topological insulator nanostructures into superconducting circuits, paving the way for both novel voltage-controlled Josephson and topological qubits.Comment: 11 pages, 6 figure

    The association between failed quit attempts and increased levels of psychological distress in smokers in a large New Zealand cohort

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    <p>Abstract</p> <p>Background</p> <p>Although the association between smoking status and poorer mental health has been well documented, the association between quit status and psychological distress is less clear. The aim of the present study is to investigate the association of smoking status and quit status with psychological distress.</p> <p>Methods</p> <p>Data for this study is from a single year of the Survey of Families, Income and Employment (SoFIE) conducted in New Zealand (2004/05) (n = 18,525 respondents). Smoking status and quit status were treated as exposure variables, and psychological distress (Kessler-10) was treated as the outcome variable. Logistic regression analyses were performed to determine the association of smoking with psychological distress in the whole adult population and quit status with psychological distress in the ex- and current-smoking population.</p> <p>Results</p> <p>Current smokers had higher rates of high and very high psychological distress compared to never smokers (adjusted odds ratio (aOR) = 1.45; 95% CI: 1.24-1.69). Unsuccessful quitters had much higher levels of high to very high levels of psychological distress (16%) than any other group. Moreover, compared to long-term ex-smokers, unsuccessful quitters had a much higher odds of high to very high levels of psychological distress (aOR = 1.73; 95% CI: 1.36-2.21).</p> <p>Conclusion</p> <p>These findings suggest that the significant association between smoking and psychological distress might be partly explained by increased levels of psychological distress among current smokers who made a quit attempt in the last year. This issue needs further study as it has implications for optimising the design of quitting support.</p

    Age-dependent relationships between multiple sexual pigments and condition in males and females

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    The reliability of sexual signaling may change across age classes due to shifts in resource allocation patterns. Two contrasting hypotheses exist regarding how the condition dependence of ornaments may shift with age, and both have received empirical support. On one hand, ornaments may more reliably reflect condition and quality in older individuals, because younger individuals of high quality invest in survival over signaling effort. On the other hand, the condition dependence of ornaments may decline with age, if older individuals in poor condition terminally invest in ornaments, or if resource constraints decline with age. Further, the expression and condition dependence of different ornaments may shift with age in unique ways, such that multifaceted sexual displays maintain reliable signaling across age classes. In yellow warblers (Setophaga petechia) of both sexes, we assessed how relationships between carotenoid-and phaeomelanin-based sexual pigmentation, prenesting body reserves, and condition at molt (reflected by growth bars and feather quality) vary across age classes. Melanin coverage correlated with condition at molt across age classes in males and showed high repeatability in both sexes. In contrast, carotenoid saturation increased longitudinally with age in males and correlated with condition at molt in different age classes in the 2 sexes. Specifically, carotenoid saturation correlated positively with condition at molt in younger, but not older males, whereas in females, the situation was reversed, with a positive correlation present only in older females. Results suggest that age-dependent signaling may promote maintenance of multifaceted sexual displays and that agedependent signaling dynamics depend on sex. © The Author 2013. Published by Oxford University Press on behalf of the International Society for Behavioral Ecology. All rights reserved

    Early Fasting Is Long Lasting: Differences in Early Nutritional Conditions Reappear under Stressful Conditions in Adult Female Zebra Finches

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    Conditions experienced during early life can have profound effects on individual development and condition in adulthood. Differences in nutritional provisioning in birds during the first month of life can lead to differences in growth, reproductive success and survival. Yet, under natural conditions shorter periods of nutritional stress will be more prevalent. Individuals may respond differently, depending on the period of development during which nutritional stress was experienced. Such differences may surface specifically when poor environmental conditions challenge individuals again as adults. Here, we investigated long term consequences of differences in nutritional conditions experienced during different periods of early development by female zebra finches (Taeniopygia guttata) on measures of management and acquisition of body reserves. As nestlings or fledglings, subjects were raised under different nutritional conditions, a low or high quality diet. After subjects reached sexual maturity, we measured their sensitivity to periods of food restriction, their exploration and foraging behaviour as well as adult resting metabolic rate (RMR). During a short period of food restriction, subjects from the poor nutritional conditions had a higher body mass loss than those raised under qualitatively superior nutritional conditions. Moreover, subjects that were raised under poor nutritional conditions were faster to engage in exploratory and foraging behaviour. But RMR did not differ among treatments. These results reveal that early nutritional conditions affect adult exploratory behaviour, a representative personality trait, foraging and adult's physiological condition. As early nutritional conditions are reflected in adult phenotypic plasticity specifically when stressful situations reappear, the results suggest that costs for poor developmental conditions are paid when environmental conditions deteriorate

    Cerebral small vessel disease genomics and its implications across the lifespan

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    White matter hyperintensities (WMH) are the most common brain-imaging feature of cerebral small vessel disease (SVD), hypertension being the main known risk factor. Here, we identify 27 genome-wide loci for WMH-volume in a cohort of 50,970 older individuals, accounting for modification/confounding by hypertension. Aggregated WMH risk variants were associated with altered white matter integrity (p = 2.5×10-7) in brain images from 1,738 young healthy adults, providing insight into the lifetime impact of SVD genetic risk. Mendelian randomization suggested causal association of increasing WMH-volume with stroke, Alzheimer-type dementia, and of increasing blood pressure (BP) with larger WMH-volume, notably also in persons without clinical hypertension. Transcriptome-wide colocalization analyses showed association of WMH-volume with expression of 39 genes, of which four encode known drug targets. Finally, we provide insight into BP-independent biological pathways underlying SVD and suggest potential for genetic stratification of high-risk individuals and for genetically-informed prioritization of drug targets for prevention trials.Peer reviewe
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