A revolution in lighting Pust, Philipp; Schmidt, Peter J; Schnick, Wolfgang
Nature materials,
05/2015, Letnik:
14, Številka:
5
Journal Article
Recenzirano
Key materials discoveries have prompted the rise of inorganic light-emitting diodes in the lighting industry. Remaining challenges are being addressed to further extend the impact of this technology ...in lighting, displays and other applications.
Archaeologists tend to rely on scientific methods to reconstruct past histories, an approach that can alienate local indigenous populations and limit the potential of archaeological research. Essays ...in this volume argue that listening to and learning from local and descendant communities is vital for interpreting the histories and heritage values of archaeological sites. Case studies from around the world demonstrate how a humanistic perspective with people-centric practice decolonizes the discipline by unlocking an intellectual space and collaborative role for indigenous people. These examples show how listening to oral traditions has opened up broader understandings of ancient rituals in Tanzania—where indigenous knowledge paved the way to significant archaeological finds about local iron technology. Archaeologists working with owners of traditional food ovens in Northern Australia discovered the function of mysterious earth mounds nearby, and the involvement of local communities in the interpretation of the Sigiriya World Heritage Site in Sri Lanka led to a better understanding of indigenous values. The ethical implications for positioning archaeology as a way to bridge divisions are also explored. In a case study from Northern Ireland, researchers risked sparking further conflict by listening to competing narratives about the country’s political past, and a study of archival records from nineteenth-century grave excavations in British Columbia, where remains were taken without local permission, reveals why indigenous people in the region still regard archaeology with deep suspicion. The value of cultural apprenticeship to those who have long-term relationships with the landscape is nearly forgotten today, contributors argue. This volume points the way to a reawakening of the core principles of anthropology in archaeology and heritage studies. Contributors: Peter Schmidt | Alice Kehoe | Kathryn Weedman Arthur | Catherine Carlson | Billy Ó Foghlú | Audrey Horning | Steve Mrozowski | George Nicholas | Innocent Pikirayi | Jonathan Walz | Camina Weasel Moccasin | Jagath Weerasinghe
Observations of the disproportionate incidence of depression in women compared with men have long preceded the recent explosion of interest in sex differences. Nonetheless, the source and ...implications of this epidemiologic sex difference remain unclear, as does the practical significance of the multitude of sex differences that have been reported in brain structure and function. In this article, we attempt to provide a framework for thinking about how sex and reproductive hormones (particularly estradiol as an example) might contribute to affective illness. After briefly reviewing some observed sex differences in depression, we discuss how sex might alter brain function through hormonal effects (both organizational (programmed) and activational (acute)), sex chromosome effects, and the interaction of sex with the environment. We next review sex differences in the brain at the structural, cellular, and network levels. We then focus on how sex and reproductive hormones regulate systems implicated in the pathophysiology of depression, including neuroplasticity, genetic and neural networks, the stress axis, and immune function. Finally, we suggest several models that might explain a sex-dependent differential regulation of affect and susceptibility to affective illness. As a disclaimer, the studies cited in this review are not intended to be comprehensive but rather serve as examples of the multitude of levels at which sex and reproductive hormones regulate brain structure and function. As such and despite our current ignorance regarding both the ontogeny of affective illness and the impact of sex on that ontogeny, sex differences may provide a lens through which we may better view the mechanisms underlying affective regulation and dysfunction.
This editorial gives a brief introduction to the articles included in the thematic section of Europe's Journal of Psychology, which is devoted to selected recent advances and applications of the ...theory of planned behavior (TPB). The five contributions address two thematic streams: (1) adjustments and extensions of the original theory and (2) applications of the TPB in public health and the political sciences.
This study relied on the theory of planned behavior (TPB) to identify the beliefs that influence young people's pro-environmental behavior. High-school students completed a questionnaire regarding ...the performance of pro-environmental behaviors early in the school year and reported on their behavior toward the end of the year. In addition to the standard TPB constructs, the initial questionnaire assessed descriptive norms, moral norms, sex, and empathic concern. Results revealed an excellent fit for the standard TPB model; attitudes, descriptive subjective norms, and perceptions of control made independent contributions to the prediction of intentions, and intentions together with perceived control predicted behavior. Behavioral, normative, and control beliefs predicted, respectively, attitudes, subjective norms, and perceived behavioral control. Empathic concern influenced intentions and behavior indirectly by its effects on behavioral, normative, and control beliefs. Examination of the effects of specific beliefs revealed important implications for designing effective behavior-change interventions.
•We tested the full TPB model applied to high school students' eco-friendly behavior.•The impact of perceived control on intentions and on future behavior is noteworthy.•Of particular importance was the behavior of the parents and the family in general.•Individual differences in empathy can influence the eco-friendly beliefs people hold.•The present study provides guidance for the design of a behavior change intervention.
Biochar is obtained by pyrolyzing biomass and is, by definition, applied in a way that avoids its rapid oxidation to CO2. Its use in agriculture includes animal feeding, manure treatment (e.g. as ...additive for bedding, composting, storage or anaerobic digestion), fertilizer component or direct soil application. Because the feedstock carbon is photosynthetically fixed CO2 from the atmosphere, producing and applying biochar is essentially a carbon dioxide removal (CDR) technology, which has a high‐technology readiness level. However, for swift implementation of pyrogenic carbon capture and storage (PyCCS), biochar use in agriculture needs to deliver co‐benefits, for example, by improving crop yields and ecosystem services and/or by improving climate change resilience by ameliorating key soil properties. Agronomic biochar research is a rapidly evolving field of research moving from less than 100 publications in 2010 to more than 15,000 by the end of 2020. Here, we summarize 26 rigorously selected meta‐analyses published since 2016 that investigated a multitude of soil properties and agronomic performance parameters impacted by biochar application, for example, effects on yield, root biomass, water use efficiency, microbial activity, soil organic carbon and greenhouse gas emissions. All 26 meta‐analyses show compelling evidence of the overall beneficial effect of biochar for all investigated agronomic parameters. One of the remaining challenges is the standardization of basic biochar analysis, still lacking in many studies. Incomplete biochar characterization increases uncertainty because adverse effects of individual studies included in the meta‐analyses might be related to low‐quality biochars, which would not qualify for certification and subsequent use (e.g. high content of contaminants, high salinity, incomplete pyrolysis, etc.). In summary, our systematic review suggests that biochar use in agriculture has the potential to combine CDR with significant agronomic and/or environmental co‐benefits.
For the implementation of pyrogenic carbon capture and storage (PyCCS), biochar use in agriculture needs to deliver co‐benefits, e.g., by improving crop yields, ecosystem services, and/or by improving climate change resilience by ameliorating key soil properties. Here, we summarize 26 rigorously selected meta‐analyses published since 2016 that investigated a multitude of soil properties and agronomic performance parameters impacted by biochar application. All 26 meta‐analyses show compelling evidence of the overall beneficial effect of biochar for all investigated agronomic parameters.
This book examines the increasing body of research dedicated to the lasting differences between the former separate states of the Federal German Republic (FRG) and the German Democratic Republic ...(GDR). Thirty years after the fall of the Berlin Wall, it takes a broad view on German unification and transformation research.
Transformation and unification processes in East and West Germany are still ongoing, and they may serve as a model for social change and its political, economic, and psychological consequences. Using advanced statistical methods of analysis, this edited volume provides insights into the valuable contextualization of individual and social phenomena that current research on German unification and transformation is producing.
Following the open science mindset using code and data, the authors investigate temporal trends in (1) mental health, (2) political attitudes, and (3) work and family life. It explores changes in mental health and political attitudes, as well as continued differences in work and family arrangements, that may stem from heterogeneous experiences within the systems and during the transformation process. This book will appeal to scholars and students from the disciplines of sociology, political science, public health, social psychology, psychology, and communication science interested in postsocialist transition processes and temporal changes in individuals and societies.
To facilitate the next generation of high-power white-light-emitting diodes (white LEDs), the discovery of more efficient red-emitting phosphor materials is essential. In this regard, the hardly ...explored compound class of nitridoaluminates affords a new material with superior luminescence properties. Doped with Eu(2+), SrLiAl3N4 emerged as a new high-performance narrow-band red-emitting phosphor material, which can efficiently be excited by GaN-based blue LEDs. Owing to the highly efficient red emission at λ(max) ~ 650 nm with a full-width at half-maximum of ~1,180 cm(-1) (~50 nm) that shows only very low thermal quenching (>95% relative to the quantum efficiency at 200 °C), a prototype phosphor-converted LED (pc-LED), employing SrLiAl3N4:Eu(2+) as the red-emitting component, already shows an increase of 14% in luminous efficacy compared with a commercially available high colour rendering index (CRI) LED, together with an excellent colour rendition (R(a)8 = 91, R9 = 57). Therefore, we predict great potential for industrial applications in high-power white pc-LEDs.
While women and girls face special risks from lack of access to sanitation facilities, their ability to participate and influence household-level sanitation is not well understood. This paper ...examines the association between women's decision-making autonomy and latrine construction in rural areas of Odisha, India.
We conducted a mixed-method study among rural households in Puri district. This included a cross sectional survey among 475 randomly selected households. These were classified as either having a functional latrine, a non-functional latrine or no latrine at all. We also conducted 17 in-depth interviews and 9 focus group discussions among household members of these three categories of households.
Decisions on the construction of household level sanitation facilities were made exclusively by the male head in 80% of households; in 11% the decision was made by men who consulted or otherwise involved women. In only 9% of households the decision was made by women. Households where women were more involved in general decision making processes were no more likely to build a latrine, compared to households where they were excluded from decisions. Qualitative research revealed that women's non-involvement in sanitation decision making is attributed to their low socio-economic status and inability to influence the household's financial decisions. Female heads lacked confidence to take decisions independently, and were dependent on their spouse or other male family members for most decisions. The study revealed the existence of power hierarchies and dynamics within households, which constrained female's participation in decision-making processes regarding sanitation.
Though governments and implementers emphasize women's involvement in sanitation programmes, socio-cultural factors and community and household level dynamics often prevent women from participating in sanitation-related decisions. Measures are needed for strengthening sanitation policies and effective implementation of programmes to address gender power relations and familial relationships that influence latrine adoption and use.
Determining whether people in certain countries score differently in measurements of interest or whether concepts relate differently to each other across nations can indisputably assist in testing ...theories and advancing our sociological knowledge. However, meaningful comparisons of means or relationships between constructs within and across nations require equivalent measurements of these constructs. This is especially true for subjective attributes such as values, attitudes, opinions, or behavior. In this review, we first discuss the concept of cross-group measurement equivalence, look at possible sources of nonequivalence, and suggest ways to prevent it. Next, we examine the social science methodological literature for ways to empirically test for measurement equivalence. Finally, we consider what may be done when equivalence is not supported by the data and conclude with a review of recent developments that offer exciting directions and solutions for future research in cross-national measurement equivalence assessment.
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