623 research outputs found

    Spatialising the Imperial Mode of Living - rethinking a concept

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    In the introduction to this special section, we present the core idea of the concept “imperial mode of living” (IML) which attempts to explain why and how the reproduction of capitalist societal relations continues to be hegemonic despite the widespread recognition of its destructive tendencies. It is argued that the IML itself can be understood as a spatial category: the imperial mode of living creates asymmetric interdependencies between various places and territories in the global North and the global South, it structures the relationship between different parts of the globe in a way that the mechanisms of reproduction in one part affect societies in others. Along four dimensions – valorisation, accumula- tion and reproduction; hegemony and subjectivation; hierarchization; externalization – we present a conceptual and research heuristic on how the working of the imperial mode of living and its socio-spatial implications can be under- stood. Moreover, it is argued that, given deepening crisis tendencies, the paradigm of a “Green Economy” or “Green Deal“ might serve as dominant imaginary that is able to orientate and unite liberal progressive forces to provide for a sufficient degree of economic coherence and to create new terrains of compromising and ways to deal with conflicts that are favourable to the operation of a green-capitalist regime of accumulation. Such an eco-capitalist modernisation of the imperial mode of living in the global North has also severe socio-spatial implications. At the end of the article, we draw a few conclusions, present some criticisms that were made and give a brief outlook of the prospects of a “green capitalism”

    Effects of two types of exercise training on psychological well-being, sleep, quality of life and physical fitness in patients with high-grade glioma (WHO III and IV): study protocol for a randomized controlled trial

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    There is existing evidence on whether and to what degree regular exercise training improves the quality of life (QoL) among cancer survivors. However, in regards to patients with high-grade glioma (HGG; WHO grade III and IV), no conclusive study has been performed so far. The present trial aims to fill this gap by examining whether psychological well-being, sleep, QoL and physical fitness might be improved with two different types of exercise, as compared to an active control condition. Active control condition represent individuals participating at regular meetings to talk about their current life situation, though, the meetings were not intended as that of the psychotherapy group. Regular meetings are of the same frequency, duration, and intensity as the exercise interventions.; A total of 45 patients with HGG after undergoing neurosurgery and adjuvant radiotherapy, chemotherapy, or chemoradiotherapy will be consecutively and randomly assigned to (a) an endurance training, (b) a resistance training or (c) to an active control condition. The intervention will last for 6 consecutive weeks, consisting of 2 weekly sessions (30-45 min per session). Measurements would take place at three time points, namely at the beginning of the study (baseline), 3 weeks after the beginning of the study, and 6 weeks after the beginning of the study. The last measurement also represents the end of the study. Aerobic exercise performance will be assessed objectively with a 6-min walking test, and a handgrip test will be used to assess the upper body strength. Further, participants will complete a battery of questionnaires covering sociodemographic information, QoL, sleep quality and sleep patterns, coping with stress, state- and trait-anxiety, depression, and fatigue. In parallel, experts will use the Hamilton Depression Rating Scale to determine and rate participants' symptoms of depression.; The present study will be the first to investigate and compare the impact of two different exercise modalities, namely endurance and resistance training, on physical fitness and dimensions of well-being, and sleep among patients with HGG who underwent neurosurgery followed by adjuvant radiotherapy, chemotherapy, or chemoradiotherapy. Importantly, unlike the majority of previous studies, the control condition consists of an active set-up to detect possible factual beneficial effects of exercise training, irrespective of social interactions

    Epitaxial strain adaption in chemically disordered FeRh thin films

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    Strain and strain adaption mechanisms in modern functional materials are of crucial importance for their performance. Understanding these mechanisms will advance innovative approaches for material properties engineering. Here we study the strain adaption mechanism in a thin film model system as function of epitaxial strain. Chemically disordered FeRh thin films are deposited on W-V buffer layers, which allow for large variation of the preset lattice constants, e.g. epitaxial boundary condition. It is shown by means of high resolution X-ray reciprocal space maps and transmission electron microscopy that the system reacts with a tilting mechanism of the structural units in order to adapt to the lattice constants of the buffer layer. This response explained by density functional theory calculations, which evidence an energetic minimum for structures with a distortion of c/a =0.87. The experimentally observed tilting mechanism is induced by this energy gain and allows the system to remain in the most favorable structure. In general, it is shown that the use of epitaxial model heterostructures consisting of alloy buffer layers of fully miscible elements and the functional material of interest allows to study strain adaption behaviors in great detail. This approach makes even small secondary effects observable, such as the directional tilting of the structural domains identified in the present case study

    The relation between sleep and pain among a non-clinical sample of young adults

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    Poor sleep is linked to poorer daily functioning and increased risk of psychiatric symptoms. With respect to pain, the relation is bi-directional; poor sleep exacerbates pain, while greater pain adversely affects sleep. Moreover, perception of pain is subject to cognitive-emotional processes. Surprisingly, no data are available from non-clinical samples of young adults. The aim of the present study was therefore to investigate the relation between sleep and pain as a function of quality of life and depressive symptoms in young adults. The direction of influence between sleep and pain was statistically tested with two different structural equation models (SEMs). A total of 862 participants (639 women, 223 men; mean age: 24.67; SD=5.91) completed a series of validated self-report questionnaires assessing sleep, quality of life, depressive symptoms and cognitive-emotional elaboration of pain. Sleep, pain, quality of life, and depressive symptoms were interrelated. The first SEM suggested both a direct and an indirect influence of pain on sleep, whereas the second SEM suggested that sleep had only an indirect influence on pain. Irrespective of the SEM, the relation between sleep and cognitive-emotional elaboration of pain was mediated by quality of life and depressive symptoms. For a non-clinical sample of young adults, findings did support the bi-directional relation between poor sleep and increased cognitive-emotional elaboration of pain, though other cognitive-emotional processes such as depressive symptoms and quality of life should be taken into accoun

    The FANTASTIC FOUR proteins influence shoot meristem size in Arabidopsis thaliana

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    <p>Abstract</p> <p>Background</p> <p>Throughout their lives plants produce new organs from groups of pluripotent cells called meristems, located at the tips of the shoot and the root. The size of the shoot meristem is tightly controlled by a feedback loop, which involves the homeodomain transcription factor WUSCHEL (WUS) and the CLAVATA (CLV) proteins. This regulatory circuit is further fine-tuned by morphogenic signals such as hormones and sugars.</p> <p>Results</p> <p>Here we show that a family of four plant-specific proteins, encoded by the <it>FANTASTIC FOUR </it>(<it>FAF</it>) genes, has the potential to regulate shoot meristem size in <it>Arabidopsis thaliana</it>. <it>FAF2 </it>and <it>FAF4 </it>are expressed in the centre of the shoot meristem, overlapping with the site of <it>WUS </it>expression. Consistent with a regulatory interaction between the <it>FAF </it>gene family and <it>WUS</it>, our experiments indicate that the FAFs can repress <it>WUS</it>, which ultimately leads to an arrest of meristem activity in <it>FAF </it>overexpressing lines. The finding that meristematic expression of <it>FAF2 </it>and <it>FAF4 </it>is under negative control by CLV3 further supports the hypothesis that the FAFs are modulators of the genetic circuit that regulates the meristem.</p> <p>Conclusion</p> <p>This study reports the initial characterization of the <it>Arabidopsis thaliana FAF </it>gene family. Our data indicate that the <it>FAF </it>genes form a plant specific gene family, the members of which have the potential to regulate the size of the shoot meristem by modulating the CLV3-WUS feedback loop.</p

    Psychometric Properties and Convergent Validity of the Shirom-Melamed Burnout Measure in Two German-Speaking Samples of Adult Workers and Police Officers

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    Burnout is considered an occupation-related psychological syndrome consisting of emotional, physical, and cognitive exhaustion. To assess dimensions of burnout, the Shirom-Melamed Burnout Measure (SMB; M; ) is widely used, but its validity and reliability have rarely been examined in adult samples. The aim of this study is to examine the psychometric properties of the German version of the SMB; M; in two independent samples of adults. In total, 311 adult workers and 201 police officers completed the SMB; M; , and questionnaires related to perceived stress and mental well-being. Descriptive statistics, internal consistency, convergent validity, and factorial validity were assessed for both samples, separately for male and female participants. The German SMB; M; had adequate psychometric properties and sufficient convergent validity. In confirmatory factor analyses, we found a good fit for both the first- and second-order model. Furthermore, measurement invariance across gender was observed in both samples. Although the SMB; M; is a popular instrument among burnout researchers, this study demonstrates for the first time that the SMB; M; can be considered a valid and reliable tool to assess burnout symptoms in both male and female adults and across different professional groups. Furthermore, with its 14 items, the SMB; M; is a succinct and economic self-assessment tool for symptoms of burnout

    Species composition and abundance of the shallow water fish community of Kongsfjorden, Svalbard

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    Projections show that climate change will lead to structural change in Arctic ecosystems. Studies project the extinction of local species and intense species invasion to the Arctic Ocean. A lack of basic biological data about the Arctic shallow water fish community will make it hard to assess whether these communities will change or not. Baseline studies in combination with future reassessments are needed to establish a basic knowledge about the change of these communities. This study provides a quantitative first time description of the shallow water fish community of Kongsfjorden, Svalbard. The fish assemblage in the depth range from 3 to 12 m was determined with respect to abundance and species composition. Among a total sample size of 2804 specimens, the presence of 12 fish species and one family (Liparidae) was detected. Myoxocephalus scorpius (shorthorn sculpin) (74.9 %), Gadus morhua (Atlantic cod) (17.2 %), and Gymnocanthus tricuspis (Arctic staghorn sculpin) (3.8 %) were identified as the most abundant species across all sampling sites. A signif- icant relationship between algal coverage and fish abun- dance was detected. Furthermore, we demonstrated a fjord inward increase in biodiversity along the south shore that might be correlated with a change in hydrographic regime

    Impact of aerobic exercise on sleep and motor skills in children with autism spectrum disorders - a pilot study

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    Prevalence rates of autism spectrum disorder (ASD) have increased dramatically in the last two decades. In addition to the core symptoms such as impaired communication, difficulties in social interaction, and restricted and stereotypical patterns of behavior and interests, poor sleep and motor skill (MS) deficits have also been observed in children with ASD. On the other hand, there is evidence that aerobic exercise training (AET) has a positive impact on sleep, and that specific training improves MSs. Accordingly, the aim of the present pilot study was to investigate to what extent a combination of AET and MS training (MST) would improve sleep and physical performance in a small sample of children with ASD.; Ten children with ASD (mean age: 10 years) took part in the study. After a thorough medical examination and psychiatric assessment, children participated in thrice-weekly 60-minute sessions of AET and MST lasting for 3 consecutive weeks. Sleep was assessed both objectively (sleep-encephalography [sleep-EEG]) and subjectively (parents' questionnaire). MSs were assessed via standardized test batteries. Parents completed sleep and mood logs, and ratings of mood.; Mild-to-moderate insomnia was reported in 70% of children. Compared to nights without previous AET and MS, on nights following AET and MS, sleep efficiency increased (d=1.07), sleep onset latency shortened (d=0.38), and wake time after sleep onset decreased for 63% of the sample (d=1.09), as assessed via sleep-EEG. Mood in the morning, as rated by parents, improved after three weeks (d=0.90), as did MSs (ball playing, balance exercise: ds>0.6).; The pattern of results of this pilot study suggests that regular AET and MST impact positively on sleep, MSs, and mood among children with ASD
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