bluuebunny/crossref_metadata_2025_split huggingface dataset:
A hybrid data-driven online solar energy disaggregation system from the grid supply point
Authors: Zhang Xiao-Yu , Kuenzel Stefanie , Guo Peiqian , Yin Lei , Watkins Chris 
Published: September 2022

AbstractThe integration of small-scale Photovoltaics (PV) systems (such as rooftop PVs) decreases the visibility of power systems, since the real demand load is masked. Most rooftop systems are behind the metre and cannot be measured by household smart meters. To overcome the challenges mentioned above, this paper proposes an online solar energy disaggregation system to decouple the solar energy generated by rooftop PV systems and the ground truth demand load from net measurements. A 1D Convolutional Neural Network (CNN) Bidirectional Long Short-Term Memory (BiLSTM) deep learning method is used as the core algorithm of the proposed system. The system takes a wide range of online information (Advanced Metering Infrastructure (AMI) data, meteorological data, satellite-driven irradiance, and temporal information) as inputs to evaluate PV generation, and the system also enables online and offline modes. The effectiveness of the proposed algorithm is evaluated by comparing it to baselines. The results show that the proposed method achieves good performance under different penetration rates and different feeder levels. Finally, a transfer learning process is introduced to verify that the proposed system has good robustness and can be applied to other feeders.
Adaptive nonsingular fixed-time sliding mode control for manipulator systems’ trajectory tracking
Authors: Zhang Xin , Shi Ran , Zhu Zijun , Quan Ying 
Published: September 2022

AbstractIn this paper, an adaptive fixed-time controller is raised for the manipulator system with uncertain disturbances to boost the rate and precision of its trajectory tracking and solve the convergence time dependence on the system's initial conditions. First, a nonsingular fixed-time sliding mode (SM) surface and a reaching law based on an arctangent function are constructed to enhance the control scheme performance. Second, the upper bound is difficult to obtain because of the uncertainty of the disturbance. The disturbance upper bound is estimated by adaptive techniques, which do not require a priori knowledge about the upper bound and effectively inhibit the effect of disturbance on the system. Finally, the fixed-time convergence of the states is analyzed by rigorous theoretical proof, and the validity of the presented control scheme is demonstrated by simulation.
Elastic Buffering Layer on CuS Enabling High-Rate and Long-Life Sodium-Ion Storage
Authors: Xiao Yuanhua , Yue Feng , Wen Ziqing , Shen Ya , Su Dangcheng , Guo Huazhang , Rui Xianhong , Zhou Liming , Fang Shaoming , Yu Yan 
Published: September 2022

AbstractThe latest view suggests the inactive core, surface pulverization, and polysulfide shuttling effect of metal sulfides are responsible for their low capacity and poor cycling performance in sodium-ion batteries (SIBs). Whereas overcoming the above problems based on conventional nanoengineering is not efficient enough. In this work, erythrocyte-like CuS microspheres with an elastic buffering layer of ultrathin polyaniline (PANI) were synthesized through one-step self-assembly growth, followed by in situ polymerization of aniline. When CuS@PANI is used as anode electrode in SIBs, it delivers high capacity, ultrahigh rate capability (500 mAh g−1 at 0.1 A g−1, and 214.5 mAh g−1 at 40 A g−1), and superior cycling life of over 7500 cycles at 20 A g−1. A series of in/ex situ characterization techniques were applied to investigate the structural evolution and sodium-ion storage mechanism. The PANI swollen with electrolyte can stabilize solid electrolyte interface layer, benefit the ion transport/charge transfer at the PANI/electrolyte interface, and restrain the size growth of Cu particles in confined space. Moreover, finite element analyses and density functional simulations confirm that the PANI film effectively buffers the volume expansion, suppresses the surface pulverization, and traps the polysulfide.
Steady and ranging sets in graph persistence
Authors: Bergomi Mattia G. , Ferri Massimo , Tavaglione Antonella 
Published: September 2022

AbstractTopological data analysis can provide insight on the structure of weighted graphs and digraphs. However, some properties underlying a given (di)graph are hardly mappable to simplicial complexes. We introduce steady and ranging sets: two standardized ways of producing persistence diagrams directly from graph-theoretical features. The two constructions are framed in the context of indexing-aware persistence functions. Furthermore, we introduce a sufficient condition for stability. Finally, we apply the steady- and ranging-based persistence constructions to toy examples and real-world applications.
Islam- und Muslim:innenfeindlichkeit unter jungen Menschen in Deutschland: Eine Frage der religiösen Selbstverortung?
Authors: Janzen Olga , Ahrens Petra-Angela 
Published: September 2022

ZusammenfassungDer Beitrag untersucht das Verhältnis zwischen (christlicher) Religiosität und Vorurteilen gegenüber Muslim:innen unter jungen Menschen in Deutschland. Dafür wird ein repräsentativer Datensatz von Befragten (N = 2868) im Alter von 14 bis 29 Jahren ausgewertet. Zum einen wird überprüft, inwiefern sich die Effekte verschiedener Dimensionen von Religiosität im Blick auf Islam- und Muslim:innenfeindlichkeit unterscheiden. Zum anderen geht der Beitrag der Frage nach, ob sich vorhandene Effekte als stabil erweisen, wenn weitere Erklärungsfaktoren berücksichtigt werden. Für junge Menschen kann aus den vorliegenden Ergebnissen geschlossen werden, dass Religiosität an sich für die Ausprägungen von Vorurteilen gegenüber Muslim:innen eher eine geringe Rolle spielt. Ein dogmatisches Verständnis von Religion ist hingegen von erheblicher Bedeutung. Der Effekt erhält seinen besonderen Stellenwert dadurch, dass er sich auch unter Berücksichtigung politischer Orientierungen als stabil erweist. Unter diesen ist es die politische Selbstpositionierung, der die höchste Erklärungskraft überhaupt zukommt. In der Gesamtsicht scheint die religiöse Selbstverortung unter jungen Menschen vor allem dann eine Rolle zu spielen, wenn ein dogmatisches Religionsverständnis zugrunde liegt.
Investigating levels and determinants of primary school children’s basic motor competencies in nine European countries
Authors: Wälti Marina , Seelig Harald , Adamakis Manolis , Colella Dario , Emeljanovas Arūnas , Gerlach Erin , Kossyva Irene , Labudová Jana , Masaryková Dana , Miežienė Brigita , Mombarg Remo , Monacis Domenico , Niederkofler Benjamin , Onofre Marcos , Pühse Uwe , Quitério Ana , Sallen Jeffrey , Scheuer Claude , Vlček Petr , Vrbas Jaroslav , Herrmann Christian 
Published: September 2022

AbstractBasic motor competencies (BMC) belong to the key learning goals of Physical Education (PE) in primary school curricula in Europe. These competencies are necessary to participate in sports inside and outside of school. Children should therefore achieve age-adequate BMC in PE and any need for educational motor support should be identified at an early stage. Studies in German-speaking countries showed that various endogenous and exogenous factors are related to children’s BMC, but international studies are missing. In the present cross-sectional study, the two BMC areas object movement (OM) and self-movement (SM) as well as the associations with endogenous (age, sex, body mass index) and exogenous (participation in extracurricular sports) factors were investigated in 1721 8‑ to 10-year-old primary school children from nine European countries. Over 25% of the children showed need for educational motor support in OM and over 20% in SM. BMC levels differed significantly between the country-specific subsamples. In all subsamples, boys showed better performances in OM, while girls scored better in SM. Older children performed better in OM and SM than younger children. Higher body mass index predicted lower BMC scores in both competence areas. Participation in ball sports was positively associated with OM and SM, and individual sports participation was a significant predictor of SM. As exogenous and endogenous variables consistently predicted BMC in all subsamples, there must be other reasons for variation in BMC levels. Future studies should address country- and school-specific characteristics like content and amount of PE.
Dry-season variability in near-surface temperature measurements and landsat-based land surface temperature in Kenyatta University, Kenya
Authors: Macharia N. A. , Mbuthia S. W. , Musau M. J. , Obando J. A. , Ebole S. O. 
Published: September 2022

AbstractUnderstanding thermal gradients is essential for sustainability of built-up ecosystems, biodiversity conservation, and human health. Urbanized environments in the tropics have received little attention on underlying factors and processes governing thermal variability as compared to temperate environments, despite the worsening heat stress exposure from global warming. This study characterized near surface air temperature (NST) and land surface temperature (LST) profiles across Kenyatta University, main campus, located in the peri-urban using in situ traverse temperature measurements and satellite remote sensing methods respectively. The study sought to; (i) find out if the use of fixed and mobile temperature sensors in time-synchronized in situ traverses can yield statistically significant temperature gradients (ΔT) attributable to landscape features, (ii) find out how time of the day influences NST gradients, (iii) determine how NST clusters compare to LST values derived from analysis of ‘cloud-free’ Landsat 8 OLI (Operational Land Imager) satellite image, and (iv) determine how NST and LST values are related to biophysical properties of land cover features.. The Getis–Ord Gi* statistics of ΔT values indicate statistically significant clustering hot and cold spots, especially in the afternoon (3–5 PM). NST ‘hot spots’ and ‘cold spots’ coincide with hot and cold regions of Landsat-based LST map. Ordinary Least Square Regression (OLS) indicate statistically significant (p < 0.01) coefficients of MNDWI and NDBI explaining 15% of ΔT variation, and albedo, MNDWI, and NDBI explaining 46% of the variations in LST patterns. These findings demonstrate that under clear sky, late afternoon walking traverses records spatial variability in NST within tropical peri-urban environments during dry season. This study approach may be enhanced through collecting biophysical attributes and NST records simultaneously to improve reliability of regression models for urban thermal ecology.
Hermitian and non-Hermitian normal-mode splitting in an optically-levitated nanoparticle
Authors: Yu Xudong , Jin Yuanbin , Shen Heng , Han Zheng , Zhang Jing 
Published: September 2022

AbstractNormal-mode splitting is a hallmark of strong coupling between two coupled harmonic oscillators. Here, we report the realization of strong coupling in the optically-levitated nanoparticle system via feedback. A silica nanoparticle is trapped by a tightly focused laser travelling in free space, which is regarded as a harmonic oscillators. An external electric oscillator is then phase-locked to the nanoparticle’s motion as another harmonic oscillator, which is modulated on the trapping laser to feedback and interact with the nanoparticle. Therefore, a highly manipulatable coupled-harmonic oscillator system is built in our platform and the normal-mode splitting is realized with strong coupling in both Hermitian and non-Hermitian cases. Moreover, since the coupling between the two harmonic oscillators induced by the feedback is flexibly manipulated, the normal-mode splitting following the cooling or heating effect is simultaneously observed. This method could be useful for further studying quantum mechanical Hamiltonian and non-Hermitian phenomena of an optically-levitated nanoparticle.
Topological phase diagram and materials realization in triangular lattice with multiple orbitals
Authors: Hua Chenqiang , Wu Meimei , Song Biyu , Gao Wenjin , Zhi Guoxiang , Niu Tianchao , Zhou Miao 
Published: September 2022

AbstractTriangular lattice, with each site coordinating with six neighbors, is one most common network in two-dimensional (2D) limit. Manifestations of peculiar properties in the lattice, including magnetic frustration and quantum spin liquid, have been restricted to single-orbital tight-binding (TB) model so far, while the orbital degree of freedom is largely overlooked. Here, by combining TB modeling with first-principles calculations, we demonstrate the rich electronic structures of triangular lattice with multiple $(p_{x}, p_{y}, p_{z})$
(

p
x

,

p
y

,

p
z

)
orbitals. Type I/II Dirac point, quadratic nodal point and nodal-loops are observed, and the topological phase diagram is mapped out by manipulating the horizontal mirror symmetry, spin-orbit coupling and energy position of relevant orbitals. Remarkably, we show that large-gap quantum spin Hall phase (∼0.2 eV) can be realized in experimentally achievable systems by growing indium monolayer on a series of semiconducting substrates, such as C/Si/Ge(111) and SiC(0001) surfaces, and the proposed materials capture the TB parameter space well. Our work not only provides physical insights into the orbital physics in 2D lattices, but also sheds light on the integration of novel quantum states with conventional semiconductor technology for potential applications, such as dissipationless interconnects for electronic circuits.
Trips to Food Services, Food Retailers, and their Relationship with the Healthfulness of Food Purchases
Authors: Yenerall Jackie , You Wen , Hill Jennie 
Published: September 2022

AbstractThis study investigates the relationship between household utilization of food services and retailers and the healthfulness of purchases using data from the 2013 Food Acquisition and Purchase Survey. Overall, our findings suggest that the associations between food service or retailer utilization and the healthfulness of purchases are limited. Thus, interventions may need to be targeted to specific households based on patterns of utilization. We also find evidence for an interdependent relationship between food at home and away from home food shopping behaviors with implications for the healthfulness of purchases.
Not All Juices are the Same: The Superior Perception of and Preference for Florida Orange Juice
Authors: Heng Yan , Yoon Sungeun , House Lisa , Gao Zhifeng 
Published: September 2022

AbstractThe Florida orange juice industry has experienced great challenges—declining orange juice consumption and a domestic supply shortage that has led to increasing imports over the past decade. As growers look for a foothold, the question remains whether it is better to continue promoting orange juice (OJ) sales by focusing on the Florida “brand” or whether orange juice, in general, should be promoted using a federal marketing program. This study aims to identify the value of promoting “Florida” on OJ products to help the industry understand the potential benefits of enhancing the image of “Florida” in consumers’ perceptions of OJ.
Trade politics at the checkout lane: ethnocentrism and consumer preferences
Authors: Bankert Alexa , Powers Ryan , Sheagley Geoffrey 
Published: September 2022

AbstractAs international trade flourishes, Americans can choose from an increasing number of foreign products even at their local grocery stores, allowing consumers to directly experience the consequences of globalized trade in a simple and intuitive way that does not require much political expertise. Yet, most prior scholarship on political consumerism assumes that consumers are aware of the political and economic implications of their choices at the checkout lane. We move away from this assumption, focusing instead on more fundamental psychological predispositions such as ethnocentrism that may guide daily consumer choices. Using a discrete choice conjoint experiment, we show that Americans, on average, exhibit ethnocentric consumer preferences, with demand for products falling as they are produced in more culturally and ethnically distant places. Additionally, we show that this effect is more pronounced among those with higher levels of ethnocentrism. Our results provide evidence for a “naïve” form of political consumerism.
Assessing reproducibility in sedimentary macroscopic charcoal count data
Authors: Anderson Lysanna , Presnetsova Liubov , Wahl David B. , Phelps Geoffrey , Gous Alan 
Published: September 2022

AbstractCurrent understanding of global late Quaternary fire history is largely drawn from sedimentary charcoal data. Since publication, CharAnalysis increasingly has been relied upon as a robust method for analyzing these data. However, several underlying assumptions of the algorithm have not been tested. This study uses replicated charcoal count data to examine the assumption of Poisson distribution and reproducibility of peak detection. Results show <10% of the replicate counts are Poisson distributed, a maximum peak replication rate of 60%, and, for >90% of the data, intra-level count differences were larger than the threshold used to identify significance in inter-level differences. A pronounced “edge effect” was observed at the beginning and end of the records, cautioning against validation of results based on sections corresponding to the historical period. The proximal cause for low reproducibility is likely a lack of spatial randomness of charcoal particles at the scale of a core diameter. Until and unless decomposition methods can be developed that accommodate the observed limitations inherent in particle count data, best practices for interpreting charcoal records may be to rely on qualitative interpretations based on smoothed influx values and minimum particle count values in the hundreds.
State, Urban Space, Race: Late Colonialism and Segregation at the Ikoyi Reservation in Lagos, Nigeria
Authors: Livsey Tim 
Published: September 2022

AbstractThis article studies the Ikoyi reservation in Lagos, Nigeria to assess changing relationships between the colonial state, urban space, and race between 1935 and 1955. Colonial authorities established reservations as special zones to house colonial officials and other white Westerners. The article shows that the Ikoyi reservation was a significant location where a wide range of actors contested relationships between statehood and race. These renegotiations contributed to making a late colonial state, a terminal form of colonial state in which explicitly racialised discourses of statehood and urban space were challenged while implicitly racialised standards and practices often persisted. Through a focus on Ikoyi, the article highlights the important relationships between segregationist projects and late colonial statehood.
Friendship and International Relations in the Himalayas: Bhutan, Britain, and the 1910 Treaty of Punakha
Authors: Kaul Nitasha 
Published: September 2022

AbstractThis article posits that friendship has been a particularly fertile and creative category against the backdrop of imperial expansion and consolidation in the Himalayas. As a small but strategically perceived sovereign Himalayan country, Bhutan's history through the last centuries has been marked simultaneously by imperial and post-colonial asymmetries of power. The term “friendship” is deployed as a key diplomatic category in Bhutan's most significant relationship, that with its much larger neighbour India. However, the origin of this friendship is always traced back to the mid-twentieth-century post-colonial period. In contradistinction to this, I constellate a much longer history of this friendship with a special focus on the landmark 1910 Treaty of Punakha between Bhutan and Britain, which was a key turning point in Bhutan's relations with its southern neighbour (British India at the time). Scholars typically state as a matter of fact that in the year 1910, with the initiative of Political Officer Charles Bell, a treaty was signed between Britain and Bhutan that placed Bhutan's external relations under the guidance of Britain. This present work is situated within the oeuvre of critically rereading imperial sources and evaluating their historical legacies, and is the first detailed scholarly analysis of why this treaty was significant and how it came to be signed. I identify the factors that were at work in how and why the 1910 friendship treaty was realised for imperial British purposes—the interpersonal friendships fostered by the British Political Officers; the threat of China as an Other; and the representation of material and ideational advantages from associating with an imperial power. In making this argument, I analyse the role played by the vocabulary of friendship and draw upon primary archival sources to illustrate the factors that were at work as well as the dissonance between the archival and public rationales provided by Political Officer Bell. The 1910 treaty was signed at a watershed moment after the then-recent installation of a monarchy in Bhutan in 1907, and against the great game backdrop of Qing activities in Tibet and British interests in the region; throughout the twentieth century, the impact of this friendship treaty was of paramount significance, and its shadow continues into the twenty-first century.
Irregular subgraphs
Authors: Alon Noga , Wei Fan 
Published: September 2022

AbstractWe suggest two related conjectures dealing with the existence of spanning irregular subgraphs of graphs. The first asserts that any
$d$
-regular graph on
$n$
vertices contains a spanning subgraph in which the number of vertices of each degree between
$0$
and
$d$
deviates from
$\frac{n}{d+1}$
by at most
$2$
. The second is that every graph on
$n$
vertices with minimum degree
$\delta$
contains a spanning subgraph in which the number of vertices of each degree does not exceed
$\frac{n}{\delta +1}+2$
. Both conjectures remain open, but we prove several asymptotic relaxations for graphs with a large number of vertices
$n$
. In particular we show that if
$d^3 \log n \leq o(n)$
then every
$d$
-regular graph with
$n$
vertices contains a spanning subgraph in which the number of vertices of each degree between
$0$
and
$d$
is
$(1+o(1))\frac{n}{d+1}$
. We also prove that any graph with
$n$
vertices and minimum degree
$\delta$
contains a spanning subgraph in which no degree is repeated more than
$(1+o(1))\frac{n}{\delta +1}+2$
times.
The Conservative Policy Bias of US Senate Malapportionment
Authors: Johnson Richard , Miller Lisa L. 
Published: September 2022

ABSTRACTThe US Senate is unique in the United States and rare internationally for its total disregard of population differences among its representational units. To analyze malapportionment’s policy impact, we devised a hypothetical reapportionment scheme that more closely approximates state population but remains favorable to small states. We developed a formula to reweight senators’ roll-call votes to reflect better state population differences. We recalculated 804 key US Senate votes between 1961 and 2019 and found that state equality in the Senate systematically biases policy outcomes toward Republican preferences.