The Value of Weather Event Science for Pending Climate Policy Decisions

This essay furthers debate about the burgeoning science of Probabilistic Event Attribution (PEA) and its relevance to imminent climate policy decisions. It critically examines Allen Thompson and Friederike Otto’s recent arguments concerning the implications of PEA studies for how the United Nations Framework Convention on Climate Change (UNFCCC) policy framework should be revised during the 2016 ‘review and decision.’ I show that their contention that PEA studies cannot usefully inform decision-making about adaptation policies and strategies is misguided and argue that the current UNFCCC treaty, the “Paris Agreement,” supersedes their proposed revision

The Dawning of the Ethics of Environmental Robots

Environmental scientists and engineers have been exploring research and monitoring applications of robotics, as well as exploring ways of integrating robotics into ecosystems to aid in responses to accelerating environmental, climatic,and biodiversity changes. These emerging applications of robots and other autonomous technologies present novel ethical and practical challenges. Yet, the critical applications of robots for environmental research, engineering, protection and remediation have received next to no attention in the ethics of robotics literature to date. This paper seeks to fill that void, and promote the study of environmental robotics. It provides key resources for further critical examination of the issues environmental robots present by explaining and differentiating the sorts of environmental robotics that exist to date and identifying unique conceptual, ethical, and practical issues they present

Ecological Historicity, Functional Goals, and Novelty in the Anthropocene

While many recognize that rigid historical and compositional goals are inadequate in a world where climate and other global systems are undergoing unprecedented changes, others contend that promoting ecosystem services and functions encourages practices that can ultimately lower the bar of ecological management. These worries are foregrounded in discussions about Novel Ecosystems (NEs); where some researchers and conservationists claim that NEs provide a license to trash nature as long as some ecosystem services are provided. This criticism arises from what we call the “anything goes” problem created by the release of historical conditions. After explaining the notion of NE, we identify numerous substantive motivations for worrying about the anything-goes-problem and then go on to show the problem can be solved by correcting two mistaken assumptions. In short, we argue that the problem is a product of adopting an overly sparse functional perspective and one that assumes an unrealistically high degree of convergence in the trajectories of natural processes. Our analysis illuminates why such assumptions are unwarranted. Finally, we further argue that adopting an appropriate ethical framework is essential to overcoming the anything-goes-problem and suggest that a certain virtue ethics conception of ecological management provides useful resources for framing and resolving the problem

Quantum Transport through Organic Molecules

We explore electron transport properties for the model of benzene-1, 4-dithiolate (BDT) molecule and for some other geometric models of benzene molecule attached to two semi-infinite one-dimensional metallic electrodes using the Green's function formalism. An analytic approach, based on a simple tight-binding framework, is presented to describe electron transport through the molecular wires. Electronic transport in such molecular systems is strongly affected by the geometry of the molecules as well as their coupling to the side-attached electrodes. Conductance reveals resonant peaks associated with the molecular energy eigenstates providing several complex spectra. Current passing through the molecules shows staircase-like behavior with sharp steps in the weak molecule-to-electrode coupling limit, while it varies quite continuously with the applied bias voltage in the limit of strong molecular coupling. In the presence of transverse magnetic field, conductance exhibits oscillatory behavior with flux $\phi$, threaded by the molecular ring, showing $\phi_0$ ($=ch/e$) flux-quantum periodicity. Though, conductance changes in the presence of transverse magnetic field, but the current-voltage characteristics are not significantly affected by this field.Comment: 11 pages, 8 figure

Biasing the perception of ambiguous vocal affect: a TMS study on frontal asymmetry

Several sources of evidence point toward a link between asymmetry of prefrontal brain activity and approach–withdrawal tendencies. Here, we tested the causal nature of this link and examined if the categorization of an ambiguous approach- or withdrawal-related vocal signal can be biased by manipulating left and right frontal neural activity. We used voice morphing of affective non-verbal vocalizations to create individually tailored affectively ambiguous stimuli on an Anger–Fear continuum—two emotions that represent extremes on the approach–withdrawal dimension. We tested perception of these stimuli after 10 min of low-frequency repetitive transcranial magnetic stimulation over left or right dorsolateral prefrontal cortex or over the vertex (control), a technique that has transient inhibitory effects on the targeted brain region. As expected, ambiguous stimuli were more likely perceived as expressing Anger (approach) than Fear (withdrawal) after right prefrontal compared with left prefrontal or control stimulation. These results provide the first evidence that the manipulation of asymmetrical activity in prefrontal cortex can change the explicit categorization of ambiguous emotional signals

Interfacial charge transfer in nanoscale polymer transistors

Interfacial charge transfer plays an essential role in establishing the relative alignment of the metal Fermi level and the energy bands of organic semiconductors. While the details remain elusive in many systems, this charge transfer has been inferred in a number of photoemission experiments. We present electronic transport measurements in very short channel ($L < 100$ nm) transistors made from poly(3-hexylthiophene) (P3HT). As channel length is reduced, the evolution of the contact resistance and the zero-gate-voltage conductance are consistent with such charge transfer. Short channel conduction in devices with Pt contacts is greatly enhanced compared to analogous devices with Au contacts, consistent with charge transfer expectations. Alternating current scanning tunneling microscopy (ACSTM) provides further evidence that holes are transferred from Pt into P3HT, while much less charge transfer takes place at the Au/P3HT interface.Comment: 19 preprint pages, 6 figure

Linkages between geochemistry and microbiology in a proglacial terrain in the High Arctic

Proglacial environments are ideal for studying the development of soils through the changes of rocks exposed by glacier retreat to weathering and microbial processes. Carbon (C) and nitrogen (N) contents as well as soil pH and soil elemental compositions are thought to be dominant factors structuring the bacterial, archaeal and fungal communities in the early stages of soil ecosystem formation. However, the functional linkages between C and N contents, soil composition and microbial community structures remain poorly understood. Here, we describe a multivariate analysis of geochemical properties and associated microbial community structures between a moraine and a glaciofluvial outwash in the proglacial area of a High Arctic glacier (Longyearbreen, Svalbard). Our results reveal distinct differences in developmental stages and heterogeneity between the moraine and the glaciofluvial outwash. We observed significant relationships between C and N contents, δ13Corg and δ15N isotopic ratios, weathering and microbial abundance and community structures. We suggest that the observed differences in microbial and geochemical parameters between the moraine and the glaciofluvial outwash are primarily a result of geomorphological variations of the proglacial terrain

Psychological perspective on generation Z's loyalty

Generation Z (Gen Z) constitutes a powerful and influential generation with increasing economic power. Their unique values and demanding mindset present challenges and opportunities for building loyalty. Traditional loyalty programs focusing on transactional benefits often fail to engage Gen Z effectively. Thus, this master’s thesis aims to determine the influence of experiential rewards on the loyalty of Gen Z within the premium fashion industry by considering key psychological drivers. The study follows a deductive research approach, beginning with a comprehensive review of literature on loyalty, Gen Z characteristics, as well as central psychological concepts. A conceptual framework representing the relationships between eleven hypotheses generated from the literature review was developed. To test these hypotheses, quantitative data was collected via an online questionnaire targeting Generation Z in Germany, resulting in 289 valid responses. Correlation and linear regression analyses confirmed that experiential rewards significantly enhance attitudinal loyalty among Gen Z, which positively influences their behavioral loyalty. Authenticity was identified as the most crucial factor affecting the perceived value of experiential rewards, highlighting Gen Z's preference for genuine brand interactions. The value of experiences, supported by theories such as experiential advantage theory and rosy retrospection, was also significant, confirming that experiences outweigh transactional rewards in their perceived value. Personalization further enhanced the value of experiential rewards, addressing Gen Z's desire for unique and tailored experiences. Additionally, multisensory experience environments emerged as an effective strategy to enhance these experiences and increase engagement. However, not all hypotheses could be confirmed. The impact of social connectivity and intrinsic motivation was more nuanced, and the statistical results were not strong enough to draw definitive conclusions. Similarly, the influence of immersive experience environments showed variability based on individual preferences. This thesis provides a deeper understanding of Gen Z's preference and offers strategic guidance for marketers seeking to build lasting loyalty within this influential demographic by implementing experiential rewards

Factors affecting the production of putrescine from agmatine by Lactobacillus hilgardii X1B isolated from wine

Aims: To elucidate and characterize the metabolic putrescine synthesis pathway from agmatine by Lactobacillus hilgardii X1B. Methods and Results: The putrescine formation from agmatine by resting cells (the normal physiological state in wine) of lactic acid bacteria isolated from wine has been determined for the first time. Agmatine deiminase and N-carbamoylputrescine hydrolase enzymes, determined by HPLC and LC-Ion Trap Mass Spectrometry, carried out the putrescine synthesis from agmatine. The influence of pH, temperature, organic acids, amino acids, sugars and ethanol on the putrescine formation in wine was determined. Conclusions: Resting cells of Lact. hilgardii X 1B produce putrescine in wine. The putrescine production was carried out from agmatine through the agmatine deiminase system. Significance and Impact of the Study: These results have significance from two points of view, wine quality and toxicological and microbiological aspects, taking account that putrescine, which origin is still controversial, is quantitatively the main biogenic amine found in wine. © 2008 The Authors.Fil: Arena, Mario Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; ArgentinaFil: Landete, J. M.. Universidad de Valencia; EspañaFil: Manca, Maria Cristina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Centro de Referencia para Lactobacilos; Argentina. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia; ArgentinaFil: Pardo, I.. Universidad de Valencia; EspañaFil: Ferrer, S.. Universidad de Valencia; Españ