bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cultural differences in global virtual teams: mapping knowledge and identifying research directions
Authors: Kargina Mariya 
Published: July 2023

Abstract
This study examines research performance indicators and builds a structural overview of topics related to cultural differences in global virtual teams (GVT) in the period 2000-2020. A bibliometric analysis of 151 academic articles on the topic of cultural differences in GVTs, retrieved from Web of Science Core Collection and Scopus databases, was applied with the Bibliometrix package in R. The analyses reveal findings regarding the cultural differences in GVTs research, in particular, the most valuable sources, prolific authors, the geography of the research, as well as main scientific articles. The main research themes and their evolution were determined, as well as potential research directions. According to the revealed most relevant themes, the trend of the stream of research is heading towards individual dimensions of the topic, indicating a moved research focus from the organizational level of management and psychology to the individual one.
Animal traction, two-wheel tractors, or four-wheel tractors? A best-fit approach to guide farm mechanization in Africa
Authors: Daum Thomas , Seidel Anna , Awoke Bisrat G. , Birner Regina 
Published: July 2023

Summary
Farm mechanization promises to help raise labor productivity and reduce the heavy toil of farming on the world’s millions of smallholder farms, hence contributing to socioeconomic development in the Global South, in particular in Africa. While mechanization is therefore high on the African development agenda, there are heavy – at times dogmatic – debates on which technological pathway toward farm mechanization – animal traction, two-wheel tractors, and four-wheel tractors – should be supported by African governments and development partners. One discussion area relates to the future of animal traction. Proponents see a continued scope for the use of draught animals, whereas opponents see animal traction as old-fashioned and see a potential to leapfrog this mechanization stage. There are also debates on the potential of two-wheel tractors, with proponents arguing that such walk-behind tractors are more affordable and suitable for smallholder farmers, and opponents believing that such tractors lack efficiency and power and still come with a high drudgery. This paper argues that there are no blueprint answers on which technological pathway is ‘best’ but only answers on which one ‘best fits’ the respective conditions. Based on this premise, this paper introduces a ‘best-fit’ framework that allows for assessing the comparative advantages and disadvantages of the three technological pathways in different agroecological and socioeconomic conditions. The results suggest that all three forms of mechanization are associated with areas where they ‘best fit’. All three farm mechanization pathways hinge on public policies and investments to create an enabling environment for private markets, as, ultimately, innovation processes should be market driven. The ‘best-fit’ framework enables governments and development partners to focus efforts to support farm mechanization on solutions that ‘best fit’ their country’s farming systems and not on those that are politically most attractive, thereby contributing to sustainable agricultural mechanization and development.
‘Land back to the people or not?’ The variable pathways of civic mobilisation against land grabs in rural Sierra Leone
Authors: Podder Sukanya 
Published: July 2023

AbstractDrawing on empirical research from Pujehun and Port Loko districts in Sierra Leone, this article explains the variable pathways of civic activism mobilised by environmental advocacy, and legal empowerment organisations, in response to two prominent land grabs. By grounding the analysis within the ontology of place, this study examines the dynamic interplay between national politics, global corporate interests, transnational advocacy, and civic agency in each place. The article finds that although the balance of power between these actors matters, the nature of corporate interests involved can be significant in determining the exact trajectory of civic mobilisation, and ultimately its success.
Renting in the informal city: the role of dignity in upgrading backyard dwellings in Cape Town, South Africa
Authors: Rice Louis , Scheba Andreas , Harris Adam 
Published: July 2023

AbstractIn South Africa, informal rental accommodation constructed in the backyards of formal houses is the fastest growing housing segment. These backyard dwellings (BDs) are makeshift structures made from timber frames, metal sheets or wooden planks. Despite the proliferation of BDs, national and local governments have done little to improve the living standards of backyard dwellers. The research uses focus groups, interviews and building surveys to examine the current state of backyard dwellings and identify opportunities and barriers for government interventions. We analyse the barriers to home improvements, highlighting the important role of tenant dignity and landlord-tenant relations. Furthermore, the research discusses the challenges of potential government-led interventions, which could easily fail in the context of resistance, mistrust and anxiety over housing. We present four key considerations that any intervention to upgrade BDs in South Africa or similar rental units in other localities must consider.
Stop contrast acquisition in child Kriol: Evidence of stable transmission of phonology post Creole formation
Authors: BUNDGAARD-NIELSEN Rikke L. , BAKER Brett J. , BELL Elise A. , WANG Yizhou 
Published: July 2023

AbstractMany Aboriginal Australian communities are undergoing language shift from traditional Indigenous languages to contact varieties such as Kriol, an English-lexified Creole. Kriol is reportedly characterised by lexical items with highly variable phonological specifications, and variable implementation of voicing and manner contrasts in obstruents (Sandefur, 1986). A language, such as Kriol, characterised by this unusual degree of variability presents Kriol-acquiring children with a potentially difficult language-learning task, and one which challenges the prevalent theories of acquisition. To examine stop consonant acquisition in this unusual language environment, we present a study of Kriol stop and affricate production, followed by a mispronunciation detection study, with Kriol-speaking children (ages 4-7) from a Northern Territory community where Kriol is the lingua franca. In contrast to previous claims, the results suggest that Kriol-speaking children acquire a stable phonology and lexemes with canonical phonemic specifications, and that English experience would not appear to induce this stability.
Perceived Quality of Online Music Therapy Sessions by Older Adults Aging at Home
Authors: Pearson Chrissy , Sham Rosalind , Gardner Sandra , Klapman Sarah , Altschuler Aviva 
Published: July 2023

AbstractOnline delivery is new to the field of music therapy (MT). This research investigated older adults’ perceived quality of MT online by certified music therapists. In this feasibility study, applying both process and outcome assessments, nine older adults volunteered to participate. Zoom was used, and a virtual music therapy (VMT) kit was developed as a resource. Surveys and observed technical difficulties revealed that perceived quality varied slightly by level of technical difficulty experienced; however, overall mean perceived quality was 7.2 out of 9. Post-study interviews revealed three main themes: (a) individual experiences with VMT, (b) individuals’ suggestions for further development of VMT sessions, and (c) individuals’ personal outcomes from VMT sessions. Participants reported overall positive experiences with VMT. Despite a slight decline in perceived quality when more technical difficulties were present, each participant reported a desire for more sessions, and they would recommend it to others.
Resilient functioning is associated with altered structural brain network topology in adolescents exposed to childhood adversity
Authors: González-García Nadia , Buimer Elizabeth E.L. , Moreno-López Laura , Sallie Samantha N. , Váša František , Lim Sol , Romero-Garcia Rafael , Scheuplein Maximilian , Whitaker Kirstie J. , Jones Peter B. , Dolan Raymond J. ,   NSPN consortium, Fonagy Peter , Goodyer Ian , Bullmore Edward T. , van Harmelen Anne-Laura 
Published: July 2023

AbstractChildhood adversity is one of the strongest predictors of adolescent mental illness. Therefore, it is critical that the mechanisms that aid resilient functioning in individuals exposed to childhood adversity are better understood. Here, we examined whether resilient functioning was related to structural brain network topology. We quantified resilient functioning at the individual level as psychosocial functioning adjusted for the severity of childhood adversity in a large sample of adolescents (N = 2406, aged 14–24). Next, we examined nodal degree (the number of connections that brain regions have in a network) using brain-wide cortical thickness measures in a representative subset (N = 275) using a sliding window approach. We found that higher resilient functioning was associated with lower nodal degree of multiple regions including the dorsolateral prefrontal cortex, the medial prefrontal cortex, and the posterior superior temporal sulcus (z > 1.645). During adolescence, decreases in nodal degree are thought to reflect a normative developmental process that is part of the extensive remodeling of structural brain network topology. Prior findings in this sample showed that decreased nodal degree was associated with age, as such our findings of negative associations between nodal degree and resilient functioning may therefore potentially resemble a more mature structural network configuration in individuals with higher resilient functioning.
Evaluation of sperm and hormonal assessments in Wagyu, Nellore, and Angus bulls
Authors: Moura A. R. , Santos A. R. , Losano J. D. A. , Siqueira A. F. P. , Hamilton T. R. S. , Zanella R. , Caires K. C. , Simões R. 
Published: July 2023

SummaryWagyu bulls are known to have a highly exacerbated libido, as shown by the intense sexual interest of young calves. Therefore we believe that Wagyu male animals have specialized Sertoli and Leydig cells that are directly involved with the sexual precocity in this breed as mature bulls have a small scrotal circumference. This study aimed to evaluate whether there were differences in the hormone and sperm characteristics of Wagyu bulls compared with the same characteristics of subspecies Bos indicus and Bos taurus sires. Frozen–thawed semen from Wagyu, Nellore, and Angus sires were analyzed for sperm kinetics (computer-assisted sperm analysis), plasma membrane integrity, chromatin integrity, acrosome status, mitochondrial activity, lipid peroxidation and hormone [luteinizing hormone (LH) and testosterone] serum concentration. The results showed that Wagyu had lower total motility and an increased number of sperm with no motility when compared with Nellore and Angus bulls. Wagyu breed did not differ from those breeds when considering plasma and acrosome membranes integrity, mitochondrial potential, chromatin resistance, sperm lipid peroxidation or hormone (LH and testosterone) concentrations. We concluded that Wagyu sires had lower total motility when compared with Nellore and Angus bulls. Wagyu breed did not differ from these breeds when considering plasma and acrosome membranes integrity, mitochondrial potential, chromatin resistance, sperm lipid peroxidation, or hormone (LH and testosterone) concentrations.
Streamwise Turbulence Modulation in Non‐Uniform Open‐Channel Clay Suspension Flows
Authors: de Vet M. G. W. , Fernández R. , Baas J. H. , McCaffrey W. D. , Dorrell R. M. 
Published: July 2023

AbstractCohesive sediment particles are ubiquitous in environmental flows. The cohesive properties of clay promote the formation of clay flocs and gels and relatively small suspended clay concentrations can enhance or suppress turbulence in a flow. Furthermore, flows are naturally non‐uniform, varying in space and time, yet the dynamics of non‐uniform open‐channel clay suspension flows is poorly understood. For the first time, the adaptation time and length scales of non‐uniform clay suspension flows were quantified using novel experiments with spatially varying but temporally uniform flow. Different levels of turbulence enhancement and attenuation were identified as the flow decelerates or accelerates. Results highlight that decelerating clay suspension flows crucially have a longer adaptation time than accelerating clay suspension flows. This is explained by the longer timescale required for the formation of bonds between cohesive particles in turbulence attenuated flows after deceleration than the rapid breakdown of bonds in turbulent flows after acceleration of clay suspension flows. This hysteresis is more pronounced for higher concentration decelerating flows that pass through a larger variety of clay flow types of turbulence enhancement and attenuation. These different adaptation time scales and associated clay flow type transitions are likely to affect clay flow dynamics in a variety of fluvial and submarine settings.
Scale‐Separated Dynamic Mode Decomposition and Ionospheric Forecasting
Authors: Alford‐Lago Daniel J. , Curtis Christopher W. , Ihler Alexander T. , Zawdie Katherine A. 
Published: July 2023

AbstractWe present a method for forecasting the foF2 and hmF2 parameters using modal decompositions from measured ionospheric electron density profiles. Our method is based on Dynamic Mode Decomposition (DMD), which provides a means of determining spatiotemporal modes from measurements alone. Our proposed extensions to DMD use wavelet decompositions that provide separation of a wide range of high‐intensity, transient temporal scales in the measured data. This scale separation allows for DMD models to be fit on each scale individually, and we show that together they generate a more accurate forecast of the time‐evolution of the F‐layer peak. We call this method the Scale‐Separated Dynamic Mode Decomposition (SSDMD). The approach is shown to produce stable modes that can be used as a time‐stepping model to predict the state of foF2 and hmF2 at a high time resolution. We demonstrate the SSDMD method on data sets covering periods of high and low solar activity as well as low, mid, and high latitude locations.
Magnetoclimatological Record of Late Pleistocene Loess in the Southern Hunshandake Sandy Land, Inner Mongolia: A Threshold Response to the East Asian Summer Monsoon Variations
Authors: Sheng Mei , Jiang Kai , Wang Xisheng , Jiang Zhaoxia , Tang Ling , Zhou Zaizheng 
Published: July 2023

AbstractWe report the first complete loess–paleosol record spanning the last 130 kyr from the southern extremity of the Hunshandake Sandy Land (HSL) in central‐eastern Mongolia. Our combined mineral magnetic and geochemical results demonstrate that during the last interglacial, the front of the East Asian summer monsoon (EASM) extended to central‐eastern Inner Mongolia, consistent with modern observations of climate change. However, during the last glacial, typical magnetic parameters (e.g., magnetic susceptibility and anhysteretic remanent magnetization and their ratios), which have been successfully adopted to denote the EASM variations on the Chinese Loess Plateau (CLP), show only muted temporal variations and cannot be readily correlated with equivalent records from the main body of the CLP. Remarkably, the Zr/Rb ratio, a robust geochemical indictor of the winter monsoon, is positively correlated with saturation isothermal remanent magnetization and saturation magnetization during the last glacial, demonstrating the strong control of wind vigor on high‐field magnetization signals dominated by lithogenic ferrimagnetic minerals. In contrast to the variable response of magnetic parameters to regional paleoclimatic fluctuations, the Rb/Sr and Ba/Sr ratios (two summer monsoon indicators) faithfully track weak chemical weathering processes and fine‐scale monsoon oscillations, especially during the last glacial. Additionally, we found that higher proportions of pedogenic high‐coercivity magnetic minerals were formed during the last interglacial, which may reflect relatively low rainfall but higher evapotranspiration in the southern extremity of the HSL compared with the CLP. We therefore attribute this complex magnetic record to a threshold response to the EASM variations in eastern Inner Mongolia.
A One‐Dimensional Volcanic Plume Model for Predicting Ash Aggregation
Authors: Hoffman D. W. , Mastin L. G. , Van Eaton A. R. , Solovitz S. A. , Cal R. B. , Eaton J. K. 
Published: July 2023

AbstractDuring explosive volcanic eruptions, volcanic ash is ejected into the atmosphere, impacting aircraft safety and downwind communities. These volcanic clouds tend to be dominated by fine ash (<63 μm in diameter), permitting transport over hundreds to thousands of kilometers. However, field observations show that much of this fine ash aggregates into clusters or pellets with faster settling velocities than individual particles. Models of ash transport and deposition require an understanding of aggregation processes, which depend on factors like moisture content and local particle collision rates. In this study, we develop a Plume Model for Aggregate Prediction, a one‐dimensional (1D) volcanic plume model that predicts the plume rise height, concentration of water phases, and size distribution of resulting ash aggregates from a set of eruption source parameters. The plume model uses a control volume approach to solve mass, momentum, and energy equations along the direction of the plume axis. The aggregation equation is solved using a fixed pivot technique and incorporates a sticking efficiency model developed from analog laboratory experiments of particle aggregation within a novel turbulence tower. When applied to the 2009 eruption of Redoubt Volcano, Alaska, the 1D model predicts that the majority of the plume is over‐saturated with water, leading to a high rate of aggregation. Although the mean grain size of the computed Redoubt aggregates is larger than the measured deposits, with a peak at 1 mm rather than 500 μm, the present results provide a quantitative estimate for the magnitude of aggregation in an eruption.
Gasdermin D-mediated pyroptosis is regulated by AMPK-mediated phosphorylation in tumor cells
Authors: Chu Xiufeng , Xiao Xiang , Wang Guangchuan , Uosef Ahmed , Lou Xiaohua , Arnold Preston , Wang Yixuan , Kong Gangcheng , Wen Mou , Minze Laurie J. , Li Xian C. 
Published: July 2023

AbstractGasdermin D (GSDMD) is a critical mediator of pyroptosis, which consists of a N-terminal pore-forming domain and a C-terminal autoinhibitory domain. Its cytolytic activity is sequestered by the intramolecular autoinhibitory mechanism. Upon caspase-1/11 mediated cleavage of GSDMD, the N-terminal pore-forming domain (GD-NT) is released to mediate pyroptosis. However, it remains unclear how GD-NT is regulated once it is generated. In the current study, we developed a TetOn system in which GD-NT was selectively induced in tumor cells to explore how the cytolytic activity of GD-NT is regulated. We found that the cytolytic activity of GD-NT was negatively regulated by the AMP-activated protein kinase (AMPK) and AMPK activation rendered tumor cells resistant to GD-NT-mediated pyroptosis. Mechanistically, AMPK phosphorylated GD-NT at the serine 46 (pS46-GD), which altered GD-NT oligomerization and subsequently eliminated its pore-forming ability. In our in vivo tumor model, AMPK-mediated phosphorylation abolished GD-NT-induced anti-tumor activity and resulted in an aggressive tumor growth. Thus, our data demonstrate the critical role of AMPK in negatively regulating the cytolytic activity of GD-NT. Our data also highlight an unexpected link between GSDMD-mediated pyroptosis and the AMPK signaling pathway in certain tumor cells.
Rapid genetic screening with high quality factor metasurfaces
Authors: Hu Jack , Safir Fareeha , Chang Kai , Dagli Sahil , Balch Halleh B. , Abendroth John M. , Dixon Jefferson , Moradifar Parivash , Dolia Varun , Sahoo Malaya K. , Pinsky Benjamin A. , Jeffrey Stefanie S. , Lawrence Mark , Dionne Jennifer A. 
Published: July 2023

AbstractGenetic analysis methods are foundational to advancing personalized medicine, accelerating disease diagnostics, and monitoring the health of organisms and ecosystems. Current nucleic acid technologies such as polymerase chain reaction (PCR) and next-generation sequencing (NGS) rely on sample amplification and can suffer from inhibition. Here, we introduce a label-free genetic screening platform based on high quality (high-Q) factor silicon nanoantennas functionalized with nucleic acid fragments. Each high-Q nanoantenna exhibits average resonant quality factors of 2,200 in physiological buffer. We quantitatively detect two gene fragments, SARS-CoV-2 envelope (E) and open reading frame 1b (ORF1b), with high-specificity via DNA hybridization. We also demonstrate femtomolar sensitivity in buffer and nanomolar sensitivity in spiked nasopharyngeal eluates within 5 minutes. Nanoantennas are patterned at densities of 160,000 devices per cm2, enabling future work on highly-multiplexed detection. Combined with advances in complex sample processing, our work provides a foundation for rapid, compact, and amplification-free molecular assays.
Generation of whole tumor cell vaccine for on-demand manipulation of immune responses against cancer under near-infrared laser irradiation
Authors: Meng Jiaqi , Lv Yanlin , Bao Weier , Meng Zihui , Wang Shuang , Wu Yuanbin , Li Shuping , Jiao Zhouguang , Tian Zhiyuan , Ma Guanghui , Wei Wei 
Published: July 2023

AbstractThe therapeutic efficacy of whole tumor cell vaccines (TCVs) is modest, which has delayed their translation into personalized immunotherapies in the clinic. Here, we develop a TCV platform based on photothermal nanoparticle-loaded tumor cells, which can be rationally applied to diverse tumor types to achieve on-demand boost of anti-tumor immune responses for inhibiting tumor growth. During the fabrication process, mild photothermal heating by near-infrared (NIR) laser irradiation induces the nanoparticle-bearing tumor cells to express heat shock proteins as endogenous adjuvants. After a single vaccination at the back of tumor-bearing mice, non-invasive NIR laser irradiation further induces mild hyperthermia at vaccination site, which promotes the recruitment, activation, and antigen presentation by dendritic cells. Using an indicator we term fluctuation of tumor growth rate, we determine appropriate irradiation regimens (including optimized irradiation intervals and times). This TCV platform enables on-demand NIR manipulation of immune responses, and we demonstrate potent therapeutic efficacy against six murine models that mimick a range of clinical scenarios, including a model based on humanized mice and patient-derived tumor xenografts.