Search Results (21)

Urbanization is a growing phenomenon affecting soils worldwide. Urban centers have been highlighted as hotspots for global change factors due to heightened anthropogenic activity. However, few studies have investigated the multifaceted impacts of global change factors (GCFs) acting in concert with urban soils. Thus, the objective of this study was to add GCFs in different combinations (0, 1, 2, 5, and 8 simultaneously) in three high-urbanity and three low-urbanity soils in Berlin and to evaluate their effects on soil parameters and functions. We hypothesized four potential outcomes of soil process responses to GCF exposure, Site-Specific Resistance, General Susceptibility, Low-Urbanity Resistance, and High-Urbanity Resistance. We provide evidence for the negative impacts of individual and multiple GCF application on litter decomposition, water repellency, and water-stable aggregates. Additionally, we highlight the General Susceptibility of litter decomposition to GCF exposure regardless of urbanity, as well as the Low-Urbanity Resistance of water repellency and High-Urbanity Resistance of water-stable aggregates under increased exposure to GCFs. This study expands on evidence of the growing threat of global change factors in urban settings and highlights some potential consequences regarding soil function. Full article

Academics and policymakers have been paying close attention to the impact of climate change on migration in recent years. This phenomenon piqued interest because the factors driving environmentally induced migration are complex and manifold. Noticeably, there has been considerable scholarship on climate change and migration in Africa. However, there has not been a concerted effort to periodically review the existing literature to systematically document the state of scholarship. Using a standardized systematic review procedures to analyze 22 peer-reviewed studies published between 2000 and 2022, we found that climate change impacts migration in many complex and multilayered forms. Beyond what has already been established in the literature on climate-related migration such as environmental effects on migration; migration as an adaptation strategy; and the influence of environmental and non-environmental factors on migration; we also found that (1) studies on climate-induced migration in Africa intensely focused on SSA, suggesting an uneven study of the region, (2) heavily affected people tend to be immobile, and (3) young people have high migration intentions due to harsh climate insecurities. These findings require urgent government and stakeholder attention. Specifically, there is a need for scholarship to interrogate the climate change–immobility nexus in order to design appropriate in situ or ex situ adaptation strategies to support lives and livelihoods. Full article

Today, some of the most widely attended concerts are in virtual reality (VR). For example, the videogame Fortnite recently attracted 12.3 million viewers sitting in homes all over the world to a VR Travis Scott rap concert. As such VR concerts become increasingly ubiquitous, we are presented with an opportunity to design more immersive virtual experiences by augmenting VR with other multisensory technologies. Given that sound is a multi-modal phenomenon that can be experienced sonically and vibrationally, we investigated the importance of haptic feedback to musical experiences using a combination of qualitative and empirical methodologies. Study 1 was a qualitative study demonstrating that, unlike their live counterparts, current VR concerts make it harder for audiences to form a connection with artists and their music. Furthermore, VR concerts lack multisensory feedback and are perceived as less authentic than live concert experiences. Participants also identified a variety of different kinds of touch that they receive at live concerts and suggested that ideal VR concerts would replicate physical touch and thermal feedback from the audience, emotional touch, and vibrations from the music. Specifically, users advocated for the use of haptic devices to increase the immersiveness of VR concert experiences. Study 2 isolated the role of touch in the music listening experience and empirically investigated the impact of haptic music players (HMPs) on the audio-only listening experience. An empirical, between-subjects study was run with participants either receiving vibrotactile feedback via an HMP (haptics condition) or no vibrotactile feedback (control) while listening to music. Results indicated that listening to music while receiving vibrotactile feedback increased participants’ sense of empathy, parasocial bond, and loyalty towards the artist, while also decreasing participants’ feelings of loneliness. The connection between haptics condition and these dependent variables was mediated by the feeling of social presence. Study 2 thus provides initial evidence that HMPs may be used to meet people’s need for connection, multisensory immersion, and complex forms of touch in VR concerts as identified in Study 1. Full article

“Emergence”, the phenomenon where a complex system displays properties, behaviours, or dynamics not trivially reducible to its constituent elements, is one of the defining properties of complex systems. Recently, there has been a concerted effort to formally define emergence using the mathematical framework of information theory, which proposes that emergence can be understood in terms of how the states of wholes and parts collectively disclose information about the system’s collective future. In this paper, we show how a common, foundational component of information-theoretic approaches to emergence implies an inherent instability to emergent properties, which we call flickering emergence. A system may, on average, display a meaningful emergent property (be it an informative coarse-graining, or higher-order synergy), but for particular configurations, that emergent property falls apart and becomes misinformative. We show existence proofs that flickering emergence occurs in two different frameworks (one based on coarse-graining and another based on multivariate information decomposition) and argue that any approach based on temporal mutual information will display it. Finally, we argue that flickering emergence should not be a disqualifying property of any model of emergence, but that it should be accounted for when attempting to theorize about how emergence relates to practical models of the natural world. Full article

Perceptual oscillations between different interpretations of unchanging, ambiguous stimuli have been studied for decades, being that this special phenomenon is considered a key towards the understanding of perceptual awareness and, ultimately, consciousness. The finding that brain dynamics (as registered, for example, through magneto- and electro-encephalography—M/EEG) of the spontaneous alternations between the percepts reflect the intrinsic dynamic properties of the (unconscious) perceptual processing impacts on many theoretical scenarios which consider perception as an inference process, and all other subserving cognitive processes as working in a coordinated and coherent way. Amongst cognitive processes, cognitive flexibility is the one sharing the most characteristics with the perceptual alternations, typical of bistable phenomena, these being the ability to change a rule or accordingly inhibit certain information differently between individuals; this “switching” ability has been shown to be correlated with the general “functioning” of a person (this, in turn, being reflected by the individual neural system organization and dynamics). A preliminary behavioral study (N = 26) has been performed to provide evidence that all these aspects are indeed correlated. Performances in computerized classic experimental paradigms (Stroop, Simon Task, Task-switching Tests, Wisconsin Card Sorting Test) have been correlated to perceptual switches and percept durations of spontaneous and voluntary alternations of the Necker Cube and with scores in Cognitive Flexibility, Barrat’s Impulsiveness, DASS-21, and the short version of the Big Five questionnaires. Future studies with EEG and brain connectivity measures can provide a more direct insight on the brain dynamics of this perceptual and cognitive processing, shedding light on the mechanisms at the basis of this supposed concerted coherent synchronization. Full article

The urban heat island (UHI) is mostly due to urbanization. This phenomenon in concert with the high temperatures caused by global climate change may profoundly affect human thermal comfort, which can influence human productivity and morbidity especially in spring/summer period. The main objective of this investigation was to determine changes in degree of thermal comfort of Mexico City’s inhabitants and compare it with the physiological equivalent temperature (PET) to evaluate whether PET and its categorization are adequate to be applied in Mexico City. A series of microclimatological measurements to estimate PET were made at four sites including the city’s center. Concomitantly, a series of surveys of thermal perception were applied to 1300 passersby. The results show that PET has increased from 1990 to 2020 from 0.1208 °C/year to 0.1498 °C/year in the study sites, in addition to overestimating the degree of thermal comfort of people according to the stablished categories or classes. It is concluded that it is necessary to adjust thermal stress categories. Knowing the percentages of people without thermal comfort will lead us to determine different ranges in environmental parameters to define an acceptable environment for most people. Full article

S-nitrosylation of proteins occurs as a consequence of the derivatization of cysteine thiols with nitric oxide (NO) and is often associated with diseases and protein malfunction. Aberrant S-nitrosylation, in addition to other genetic and epigenetic factors, has gained rapid importance as a prime cause of various metabolic, respiratory, and cardiac disorders, with a major emphasis on cancer and neurodegeneration. The S-nitrosoproteome, a term used to collectively refer to the diverse and dynamic repertoire of S-nitrosylated proteins, is relatively less explored in the field of redox biochemistry, in contrast to other covalently modified versions of the same set of proteins. Advancing research is gradually unveiling the enormous clinical importance of S-nitrosylation in the etiology of diseases and is opening up new avenues of prompt diagnosis that harness this phenomenon. Ever since the discovery of the two robust and highly conserved S-nitrosoglutathione reductase and thioredoxin systems as candidate denitrosylases, years of rampant speculation centered around the identification of specific substrates and other candidate denitrosylases, subcellular localization of both substrates and denitrosylases, the position of susceptible thiols, mechanisms of S-denitrosylation under basal and stimulus-dependent conditions, impact on protein conformation and function, and extrapolating these findings towards the understanding of diseases, aging and the development of novel therapeutic strategies. However, newer insights in the ever-expanding field of redox biology reveal distinct gaps in exploring the crucial crosstalk between the redoxins/major denitrosylase systems. Clarifying the importance of the functional overlap of the glutaredoxin, glutathione, and thioredoxin systems and examining their complementary functions as denitrosylases and antioxidant enzymatic defense systems are essential prerequisites for devising a rationale that could aid in predicting the extent of cell survival under high oxidative/nitrosative stress while taking into account the existence of the alternative and compensatory regulatory mechanisms. This review thus attempts to highlight major gaps in our understanding of the robust cellular redox regulation system, which is upheld by the concerted efforts of various denitrosylases and antioxidants. Full article

Background: Appropriate space is considered paramount for good captive animal welfare. There has been a concerted effort by captive institutions, particularly zoos, to provide captive animals with relatively large, naturalistic enclosures which havehad demonstrated welfare benefits for animals. However, post-occupancy assessments of these enclosures tend to focus on short-term welfare-centredbehavioural effects or human perceptions of the enclosures and their effects and seldom consider spaceuse. We examined the space use of a group of eight captive chimpanzees 5 years after large-scale enclosure modification at the Johannesburg Zoo, South Africa. Methods: Instantaneous scan sampling was used to record behaviour and location of each chimpanzee at 5 min intervals in the new enclosure. From these 6.8 h of data, space-use patterns and subgroup (two or more chimpanzees within 10 m of each other) spacing were considered relative to local environmental variables, social conditions and the location and size of the previous smaller enclosures in which they had been kept. Results: Space use was heterogeneous, with some enclosure zones being used more than others, and 97.5% of subgroups restricted their spacing to the dimensions of the previous housing (10 m × 10 m). Conclusions: This pattern was not explained by individual behaviour, time of day, location, available space, weather, temperature or shade availability, inter-individual spacing or subgroup composition. We suggest the learned helplessness phenomenon may explain these observations and discuss the implications for both animal welfare and endangered species conservation.Regardless of the mechanism, we suggest that such effects could be avoided through the provision of large enclosures for captive animals. Full article

With widespread industry feedback on engineering graduates’ lack of technical skills and research demonstrating that higher education does not effectively facilitate the development of open-ended problem-solving competencies, many educators are attempting to implement measures that address these concerns. In order to properly formulate sensible interventions that result in meaningful improvements in student outcomes, useful educational measurement and analysis approaches are needed. Legitimation Code Theory (LCT) has rapidly emerged as an effective, theoretically informed ‘toolkit’ offering a suite of dimensions through which to observe, analyze, interpret, and design teaching and learning practices. LCT Semantics has been used to help engineering educators unpack both levels of engineering knowledge abstraction and the complexity of engineering terms, while LCT Specialization focuses on knowledge practices (using the epistemic plane) and enables a visualization and differentiation between kinds of phenomena and the fixed versus open-ended methods with which to approach a particular phenomenon. Drawing on a range of initiatives to enable an improved practical grasp of fluid mechanics concepts, this paper presents a description and graphic LCT analysis of student learning that has been designed to anchor the ‘purist’ principles underpinning applied fluid mechanics concepts (such as in piping and pump network design) by way of concerted ‘doctrinal’ practices, and the exposure to more open-ended practical situations involving peer learning/group work, allowing educators to visualize the code clash between the curriculum and the world of work. Full article

This article tackles a well-known but little-studied phenomenon: the importance of Holocaust themes to heavy metal. The fascination of metal bands with evil and death has until recently been met outside the scene with such reactions as moral panic, disgust or indifference. In the last ten years, however, scholars in an emerging discourse of Metal Studies have attempted to engage more critically with the social and musical dimensions of metal, in order to contextualise and understand its lyrics and imagery. Although a number of writers have touched upon the recurrence of Holocaust imagery, no one has dealt at any length with extreme metal as a form of Holocaust memory. My article focuses on what might be called the founding text of extreme metal, Slayer’s ‘Angel of Death’, which lived up to the sub-genre’s name by pushing both its musical form and its lyrical content beyond previously maintained limits and taboos. It considers the song’s mobilisation of affective intensities as involving problematic politics, but also a challenge to conceptions of Holocaust representation. I consider how affects are evoked by ‘Angel of Death’ through offering readings of the song itself as well as of ways that its reception have been recorded on social media, in concert videos, and reaction videos uploaded to YouTube. Full article

Black blooms are a serious and complex problem for lake bays, with far-reaching implications for water quality and drinking safety. While Fe(II) and S(−II) have been reported as the most important triggers of this phenomenon, little effort has been devoted in investigating the relationships between Fe(II) and S(−II) and the host of potentially important aquatic factors. However, a model involving many putative predictors and their interactions will be oversaturated and ill-defined, making ordinary least squares (OLS) estimation unfeasible. In such a case, sparsity assumption is typically required to exclude the redundant predictors from the model, either through variable selection or regularization. In this study, Bayesian least absolute shrinkage and selection operator (LASSO) regression was employed to identify the major influence variables from 11 aquatic factors for Fe(II), S(−II), and suspended sediment concentration (SSC) in the Chaohu Lake (Eastern of China) bay during black bloom maintenance. Both the main effects and the interactions between these factors were studied. The method successfully screened the most important variables from many items. The determination coefficients (R²) and adjusted determination coefficients (Adjust R²) showed that all regression equations for Fe(II), S(-II), and SSC were in good agreement with the situation observed in the Chaohu Lake. The outcome of correlation and LASSO regression indicated that total phosphorus (TP) was the single most important factor for Fe(II), S(-II), and SSC in black bloom with explanation ratios (ERs) of 76.1%, 37.0%, and 12.9%, respectively. The regression results showed that the interaction items previously deemed negligible have significant effects on Fe(II), S(−II), and SSC. For the Fe(II) equation, total nitrogen (TN) × dissolved oxygen (DO) and chlorophyll a (CHLA) × oxidation reduction potential (ORP), which contributed 10.6% and 13.3% ERs, respectively, were important interaction variables. TP emerged in each key interaction item of the regression equation for S(−II). Water depth (DEP) × Fe(II) (30.7% ER) was not only the main interaction item, but DEP (5.6% ER) was also an important single factor for the SSC regression equation. It also indicated that the sediment in shallow bay is an important source for SSC in water. The uncertainty of these relationships was also estimated by the posterior distribution and coefficient of variation (CV) of these items. Overall, our results suggest that TP concentration is the most important driver of black blooms in a lake bay, whereas the other factors, such as DO, DEP, and CHLA act in concert with other aquatic factors. There results provide a basis for the further control and management policy development of black blooms. Full article

People with disability make up approximately 15% of the world’s population and are, therefore, a major focus of the ‘leave no-one behind’ agenda. It is well known that people with disabilities face exclusion, particularly in low-income contexts, where 80% of people with disability live. Understanding the detail and causes of exclusion is crucial to achieving inclusion, but this cannot be done without good quality, comprehensive data. Against the background of the Convention for the Rights of Persons with Disabilities in 2006, and the advent of 2015’s 2030 Agenda for Sustainable Development there has never been a better time for the drive towards equality of inclusion for people with disability. Governments have laid out targets across seventeen Sustainable Development Goals (SDGs), with explicit references to people with disability. Good quality comprehensive disability data, however, is essential to measuring progress towards these targets and goals, and ultimately their success. It is commonly assumed that there is a lack of disability data, and development actors tend to attribute lack of data as the reason for failing to proactively plan for the inclusion of people with disabilities within their programming. However, it is an incorrect assumption that there is a lack of disability data. There is now a growing amount of disability data available. Disability, however, is a notoriously complex phenomenon, with definitions of disability varying across contexts, as well as variations in methodologies that are employed to measure it. Therefore, the body of disability data that does exist is not comprehensive, is often of low quality, and is lacking in comparability. The need for comprehensive, high quality disability data is an urgent priority bringing together a number of disability actors, with a concerted response underway. We argue here that enough data does exist and can be easily disaggregated as demonstrated by Leonard Cheshire’s Disability Data Portal and other studies using the Washington Group Question Sets developed by the Washington Group on Disability Statistics. Disaggregated data can improve planning and budgeting for reasonable accommodation to realise the human rights of people with disabilities. We know from existing evidence that disability data has the potential to drive improvements, allowing the monitoring and evaluation so essential to the success of the 2030 agenda of ‘leaving no-one behind’. Full article

Although workplace bullying is a well-researched phenomenon, the specific way it unfolds in higher education institutions (HEI) remains largely underdiscussed. Based on the outcomes of a survey conducted across HEI in Pakistan, by reference to structural equation modeling, using Amos-20, this paper not only adds to our understanding of the scope and features of bullying in HEI, but also suggests strategies employers and victims could employ to cope with the adverse implications of bullying. The key findings of this research are: (i) a positive correlation exists between the degree of workplace bullying and strain levels; (ii) more frequently than not, female employees, younger employees, and employees in junior positions are victims of bullying; (iii) bullying and strain can be fully mediated only when both emotion-focused and problem-focused coping strategies are employed in synergy. In brief, although research findings elaborated in this paper draw from the specific case of HEI in Pakistan, this paper makes a case for more research, vigilance and action to understand the scale of the phenomenon in academia and to undertake concerted action to mitigate its adverse impact on specific individuals and HEI themselves. Full article

Assembled complexes [[M(NCS)₂(bpa)₂]·biphenyl]_n (M = Fe, Co; bpa = 1,2-bis(4-pyridyl)ethane) have been synthesized because [Fe(NCBH₃)₂(bpa)₂·biphenyl]_n has a novel threefold spiral structure and shows stepwise spin-crossover phenomenon. We attempted to obtain spiral structures for [[Fe(NCS)₂(bpa)₂]·biphenyl]_n and [[Co(NCS)₂(bpa)₂]·biphenyl]_n using a one-step diffusion method, while the reported spiral structure of [[Fe(NCBH₃)₂(bpa)₂]·biphenyl]_n was obtained by diffusion method after synthesizing Fe(II)-pyridine complex. X-ray structural analysis revealed that [[Fe(NCS)₂(bpa)₂]·biphenyl]_n and [[Co(NCS)₂(bpa)₂]·biphenyl]_n had a chiral propeller structure of pyridines around the central metal, and they had a novel spiral structure and chiral space group P3₁2₁ without the presence of chiral auxiliaries. It was shown that the host 1D chain, having a chiral propeller structure of pyridines around the central metal along with its concerted interaction with an atropisomer of biphenyl, made a threefold spiral structure. Full article

The rapid expansion of modern food retail encapsulated in the so-called ‘supermarket revolution’ is often portrayed as a pivotal driving force in the modernization of agri-food systems in the Global South. Based on fieldwork conducted on horticulture value chains in West Java and South Sulawesi, this paper explores this phenomenon and the concerted efforts that government and corporate actors undertake with regard to agri-food value chain interventions and market modernization in Indonesia. The paper argues that after more than 15 years of ‘supermarket revolution’ in Indonesia, traditional food retail appears not to be in complete demise, but rather adaptive and resilient to its modern competitors. The analysis of local manifestations of supermarket-led agricultural development suggests that traditional markets can offer certain advantages for farmers over supermarket-driven value chains. The paper further identifies and discusses two areas that have so far been neglected by research and policymaking and which warrant further investigation: (i) the simultaneous transformations in traditional food value chains and their relation to modern markets, and (ii) the social and environmental performances of modern vis-à-vis traditional food value chains. Full article