bluuebunny/crossref_metadata_2025_split huggingface dataset:
Vibrations of a Bridge with Random Structural Irregularities Under Random Traffic Load and a Probabilistic Structural Degradation Assessment Approach
Authors: Eberle Robert , Oberguggenberger Michael 
Published: September 2022

Abstract
Purpose
Dynamic loads like traffic make bridges vibrate. Especially for bridges with a large span, vibrations have a significant impact on their structural stability and durability. Due to material defects, fatigue and other influences, a bridge typically has random structural irregularities, which affect its dynamic response. In this work, an effective mathematical approach is presented to study the dynamic response of a model single span slender beam bridge, in the presence of random structural irregularities. In addition, an approach to assess the structural degradation of a bridge is presented.

Methods
The slender beam bridge is modelled as an Euler-Bernoulli beam and the random structural irregularities are considered by random fields in the bending stiffness and the mass per unit length. As an illustrative example, the vibrations of a model road bridge are investigated for randomly crossing vehicles. After Monte Carlo experiments with and without random structural irregularities the vibrations and mechanical stresses of the bridge are determined and analysed.

Results
The study shows statistically significant variations in the most dominant frequencies with and without random structural irregularities.

Conclusion
The influence of the random irregularities on the structural stability status of a bridge may not be negligible. The probability of a serious structural degradation in the bridge can be assessed by means of a binomial logistic model. The developed approach enables a better understanding of the vibrations and structural status of bridges, taking into account random structural irregularities and random traffic.
Programmable money: next-generation blockchain-based conditional payments
Authors: Weber Ingo , Staples Mark 
Published: September 2022

AbstractConditional payments allow the transfer of money only when pre-defined rules hold. Example uses could include welfare payments, employee expenses, insurance payouts, or tied donations. Normally, conditions are checked manually in reimbursement or pre-approval/audit processes, either at accounts before funds are distributed, or using account records after distribution. Blockchain’s capabilities for smart contract and digital assets can be used to implement next-generation conditional payments, on a decentralized ledger. We conducted a project with an industry partner where we conceptualized, implemented, and evaluated a novel programmable money concept using blockchain. In the system, programmed policies are not attached to accounts, but instead to money itself. Policies here specify the conditions when money may be spent, and can be automatically checked by the money as it is spent. Policies can also define auxiliary actions to be taken as part of payment transactions, including side-payments. Policies can be dynamically added to and removed from money as it flows through an economy. These policies could be budget rules for tied funds, but could also enable new forms of “values-based money” that respect ethical or other rules which relate to societal values or social norms. We report on some of our experiences and insights regarding blockchain architecture, software engineering with blockchain, and blockchain-based programmable money. We also identify opportunities and open research questions in these areas.
Analysis of the change in the structure of the Japanese power supply using the GTAP-E-power model
Authors: Higashi Akiko , Itakura Ken , Inoue Yushi , Otake Hiroaki 
Published: September 2022

AbstractThis study analyzes the effect of the change in the structure of the Japanese power supply, which disaggregates the power sector based on the GTAP-E model framework. We analyze the impact of the change in the power structure on Japan’s macroeconomy, power sector, and industry by comparing the results of four scenarios. In our simulations, which are divided into two periods, shocks are introduced to the growth rate in real GDP, labor force, population, and Japanese zero-emission power supply; nuclear power, hydropower, wind power, solar power, and other types of power. First, simulations from 2011 to 2018 were performed to update the GTAP-E-Power database. Next, simulations from 2019 to 2030 were performed for policy scenarios with different growth rates of zero-emission power supply in Japan. The simulation results show that if Japan maintains the same growth rate of zero-emission power supply as that of the Sustainable Development Scenario of the World Energy Outlook 2019, the share of zero-emission power supply in 2030 will achieve the government’s target. The simulation results also show that an increase in zero-emission power supply has a positive effect on the Japanese trade balance.
Matrix compression along isogenic blocks
Authors: Belton Alexander , Guillot Dominique , Khare Apoorva , Putinar Mihai 
Published: September 2022

AbstractA matrix-compression algorithm is derived from a novel isogenic
block decomposition for square matrices. The resulting compression and
inflation operations possess strong functorial and spectral-permanence
properties. The basic observation that Hadamard entrywise functional
calculus preserves isogenic blocks has already proved to be of paramount
importance for thresholding large correlation matrices. The proposed
isogenic stratification of the set of complex matrices bears similarities to
the Schubert cell stratification of a homogeneous algebraic manifold. An
array of potential applications to current investigations in computational
matrix analysis is briefly mentioned, touching concepts such as symmetric
statistical models, hierarchical matrices and coherent matrix organization
induced by partition trees.
Unsteady motions in the turbulent separation bubble of a two-dimensional wing
Authors: Wang Sen , Ghaemi Sina 
Published: September 2022

The unsteadiness of a turbulent separation bubble (TSB) formed close to the trailing edge of a two-dimensional wing was investigated using time-resolved particle image velocimetry. The angle of attack was set to 9.7° and the chord-based Reynolds number was 720 000. The TSB consisted of two shear layers and formed a triangular shape in the streamwise–wall-normal plane. The vertices of this triangle consisted of an intermittent detachment point, a fixed corner close to the airfoil trailing edge and an intermittent endpoint in the wake region. The velocity field had three energetic regions each with different Strouhal numbers (Stl): (a) an upstream turbulent boundary layer (TBL) with Stl = 0.1 to 4, (b) a TSB with Stl = 0.03 to 0.08 and (c) two shear layers with Stl = 0.4 to 0.8. The low-frequency motions in the TSB consisted of large zones of positive and negative streamwise velocity fluctuation that were several times wider than the large-scale structures of the upstream TBL. These zones forced an undulation of the separation line and were attributed to Görtler structures. They were also correlated with the velocity fluctuations between the two shear layers. The breathing motion of the TSB occurred at Stl = 0.05. This breathing correlated with the location of the TSB endpoint and the flapping of the upper shear layer. The detachment point of the TSB featured broad fluctuations and did not demonstrate a strong correlation with the breathing motion.
Potato consumption is not associated with cardiometabolic health outcomes in Framingham Offspring Study adults
Authors: Yiannakou Ioanna , Pickering R. Taylor , Yuan Mengjie , Singer Martha R. , Moore Lynn L. 
Published: September 2022

Abstract
Some consider potatoes to be unhealthy vegetables that may contribute to adverse cardiometabolic health outcomes. We evaluated the association between potato consumption (including fried and non-fried types) and three key cardiometabolic outcomes among middle-aged and older adults in the Framingham Offspring Study. We included 2523 subjects ≥30 years of age with available dietary data from 3-d food records. Cox-proportional hazards models were used to estimate hazard ratios (HRs) and 95 % confidence intervals (CIs) for hypertension, type 2 diabetes or impaired fasting glucose (T2DM/IFG), and elevated triglycerides, adjusting for anthropometric, demographic and lifestyle factors. In the present study, 36 % of potatoes consumed were baked, 28 % fried, 14 % mashed, 9 % boiled and the rest cooked in other ways. Overall, higher total potato intake (≥4 v. <1 cup-equivalents/week) was not associated with risks of T2DM/IFG (HR 0⋅97, 95 % CI 0⋅81, 1⋅15), hypertension (HR 0⋅95; 95 % CI 0⋅80, 1⋅12) or elevated triglycerides (HR 0⋅99, 95 % CI 0⋅86, 1⋅13). Stratified analyses were used to evaluate effect modification by physical activity levels and red meat consumption, and in those analyses, there were no adverse effects of potato intake. However, when combined with higher levels of physical activity, greater consumption of fried potatoes was associated with a 24 % lower risk (95 % CI 0⋅60, 0⋅96) of T2DM/IFG, and in combination with lower red meat consumption, higher fried potato intake was associated with a 26 % lower risk (95 % CI 0⋅56, 0⋅99) of elevated triglycerides. In this prospective cohort, there was no adverse association between fried or non-fried potato consumption and risks of T2DM/IFG, hypertension or elevated triglycerides.
A critical assessment of claims that human footprints in the Lake Otero basin, New Mexico date to the Last Glacial Maximum
Authors: Oviatt Charles G. , Madsen David B. , Rhode David , Davis Loren G. 
Published: September 2022

AbstractThe ancient human footprints in valley-bottom sediments in Tularosa Valley, New Mexico, are fascinating and potentially important because they suggest interactions between Pleistocene megafauna as well as great antiquity. The dating of those footprints is crucial in interpretations of when humans first came to North America from Asia, but the ages have larger uncertainties than has been reported. Some of that uncertainty is related to the possibility of a radiocarbon reservoir in the water in which the dated propagules ofRuppia cirrhosagrew. As a test of that possibility,Ruppiaspecimens collected in 1947 from nearby Malpais Spring returned a radiocarbon age of ca. 7400 cal yr BP. We think it would be appropriate to devise and implement independent means for dating the footprints, thus lowering the uncertainty in the proposed age of the footprints and leading to a better understanding of when humans first arrived in the Americas.
Community-based fish sanctuaries: untapped potential for freshwater fish conservation
Authors: Jumani Suman , Hull Vanessa , Dandekar Parineeta , Mahesh Neethi 
Published: September 2022

AbstractRiverine systems and associated fish populations worldwide are threatened by human impacts, especially in tropical countries with emerging economies. In India, community-based fish sanctuaries are a key mechanism for the conservation of freshwater fish populations, but there are few peer-reviewed studies on this subject. Here we integrate over 35 combined years of field experience with a literature synthesis to define and classify community-based fish sanctuaries. We present a novel, critical analysis of fish sanctuaries as social–ecological systems with a functional characterization based on natural capital, ecosystem services, human well-being, and policy and governance. We find that such sanctuaries are shaped by complex social–ecological processes, including coevolution of religious practices and ecological change, feedback processes created by retaliatory conflicts between river users, and diverse and dynamic governance strategies. These sanctuaries hold great potential for the conservation of rare fish species in India, but are subject to myriad threats at local, regional and global scales. Given the complexity of these social–ecological systems, we outline their conservation potential and highlight directions for future research.
Regional Lydian pottery at Daskyleion: testing stylistic classification by chemical analysis
Authors: Gürtekin-Demir R. Gül , Mommsen Hans , Kerschner Michael 
Published: September 2022

AbstractThis paper presents the results of an interdisciplinary study of Lydian pottery excavated at Daskyleion between 1988 and 2002. Before becoming the satrapal centre of Hellespontine Phrygia in the Achaemenid period, to judge by the historical and archaeological evidence, Daskyleion had close interrelations with the Lydian kingdom. Previous stylistic and macroscopic fabric studies of Lydian pottery from Daskyleion have shown that as well as items produced in the Lydian capital of Sardis, ceramics may also have been imported from other production centres in the region of Greater Lydia (Gürtekin-Demir 2002). New chemical analysis by neutron activation (NAA) of 31 samples from Daskyleion presented here confirms this suggestion. We determined four chemical provenance groups of Lydian pottery, each of them defined by an element pattern which is distinct from the pottery made in Sardis. Although these four provenance groups cannot be located at present due to the lack of reference data from potential Lydian-style ceramic production centres in Anatolia, they prove that other production centres existed outside Sardis. Daskyleion may have been one of those.
The deprived or the devil? A content analysis of the media representation of older adults under COVID-19 in Hong Kong
Authors: Yang Frances Lu , Au Adelaide Tsz Nok , Wong Jason Yue Hei , Lou Vivian Wei Qun 
Published: September 2022

AbstractOlder adults have been statistically proved to be at a higher risk of getting severely infected by the coronavirus COVID-19, evoking sweeping narratives of compassionate ageism surrounding them in different discourses. By analysing the media content, scholars from different areas have alerted us about the amplified ageism aroused by the pandemic crisis. However, we are still short of empirical evidence to learn how ageism is constructed in diverse sociocultural contexts in the wake of this global pandemic crisis. This study provides the case of Hong Kong to reflect on how ageism, as a set of social inequalities, is constructed. By examining 814 articles collected from the three most popular newspapers with different political orientations in Hong Kong, this study uses quantitative and qualitative content analysis to examine how older people have been generally represented. Then it further compares how these representations have been influenced by the media's liberal or conservative preferences. Third, it examines the relationship between the political orientation of newspapers and how different forms of ageism are constructed. The findings indicate that despite the liberal or conservative inclination of the three newspapers, they portray the older population as frail, dependent and deprived not only at the biomedical level but in all aspects of life. This study also reveals that the newspapers with a populist inclination in both camps have shown more hostile attitudes in representing compassionate ageism. In contrast, liberal and conservative-leaning media affirmed the government's dominant role in taking full responsibility for caring for the older population. The findings indicate that the polarised ageism frame cannot fully explain the underpinnings of ageism and implied policy processing in different contexts.
A new comprehensive performance optimization approach for Earth-contact mechanism based on terrain-adaptability task
Authors: Tang Hongyan , Zhang James M. , Zhang Dan 
Published: September 2022

AbstractEarth-contact mechanism (ECM), a type of mechanism to keep the system in contact with the earth and to move with the terrain changes. This paper uses the virtual equivalent parallel mechanism (VEPM) to convert the terrain data into the kinematical variables of the moving platform in the VEPM, and further analyzes the performance of the VEPM at each terrain point. Then, the comprehensive performance of the VEPM is chosen as the optimization goal, and a task-oriented dimensional optimization approach combined with the particle swarm algorithm and the neural network algorithm is proposed. This paper conducted a comparative experiment to verify the superiority of the new approach in optimizing the ECM’s comprehensive performance, whose performance analysis also can be applied into the layout design of the ECM. This paper proposed an analysis method to construct the ECM’s performance map based on the digital terrain map, which helps the control system and operator to make the optimal control decision.
Representing vulnerable populations in genetic studies: The case of the Roma
Authors: Lipphardt Veronika , Rappold Gudrun A. , Surdu Mihai 
Published: September 2022

ArgumentMoreau (2019) has raised concerns about the use of DNA data obtained from vulnerable populations, such as the Uighurs in China. We discuss another case, situated in Europe and with a research history dating back 100 years: genetic investigations of Roma. In our article, we focus on problems surrounding representativity in these studies. We claim that many of the circa 440 publications in our sample neglect the methodological and conceptual challenges of representativity. Moreover, authors do not account for problematic misrepresentations of Roma resulting from the conceptual frameworks and sampling schemes they use. We question the representation of Roma as a “genetic isolate” and the underlying rationales, with a strong focus on sampling strategies. We discuss our results against the optimistic prognosis that the “new genetics” could help to overcome essentialist understandings of groups.
Individuals and collectives in the philosophy of Boris Hessen: An introduction
Authors: Winkler Sean 
Published: September 2022

ArgumentThis paper provides an introduction to three translations of articles by Soviet philosopher Boris Hessen: “Mechanical Materialism and Modern Physics,” “On Comrade Timiryazev’s Attitude towards Contemporary Science” and “Marian Smoluchowski (On the Tenth Anniversary of His Death)”. It begins by presenting a central tension in Hessen’s work; namely, how even though he is better known for the externalism of his 1931 Newton paper, much of his work has been considered exemplary of an internalist approach. I then show that for Hessen, the history of modern science was defined by the discovery of the dialectical unity in opposition between dynamic and statistical regularity. This not only sheds important light on Hessen’s understanding of causation, but also reconciles the aforementioned tension by showing his approach to the relationship between individuals and collectives in the study of physical phenomena, along with the relationship between individual scientists and socioeconomic conditions.
Successful percutaneous closure of a recurrent aorto-left ventricular tunnel with an Amplatzer Vascular Plug II
Authors: Sathe Yogesh Chintaman , Tomar Munesh , Krasemann Thomas 
Published: September 2022

AbstractAorto-left ventricular tunnel is an extremely rare CHD clinically impressing as aortic regurgitation. This is usually corrected surgically, sometimes by percutaneous catheter intervention. Recurrent aorto-left ventricular tunnel has been reported occasionally. Reports of percutaneous closure of such recurrent aorto-left ventricular tunnels are rare. We hereby describe successful closure of a recurrent aorto-left ventricular tunnel with an Amplatzer Vascular Plug II.
Energy-Dispersive X-Ray Spectrum Simulation with NIST DTSA-II: Comparing Simulated and Measured Electron-Excited Spectra
Authors: Newbury Dale E , Ritchie Nicholas W M 
Published: September 2022

Abstract
Electron-excited X-ray microanalysis with energy-dispersive spectrometry (EDS) proceeds through the application of the software that extracts characteristic X-ray intensities and performs corrections for the physics of electron and X-ray interactions with matter to achieve quantitative elemental analysis. NIST DTSA-II is an open-access, fully documented, and freely available comprehensive software platform for EDS quantification, measurement optimization, and spectrum simulation. Spectrum simulation with DTSA-II enables the prediction of the EDS spectrum from any target composition for a specified electron dose and for the solid angle and window parameters of the EDS spectrometer. Comparing the absolute intensities for measured and simulated spectra reveals correspondence within ±25% relative to K-shell and L-shell characteristic X-ray peaks in the range of 1–11 keV. The predicted M-shell intensity exceeds the measured value by a factor of 1.4–2.2 in the range 1–3 keV. The X-ray continuum (bremsstrahlung) generally agrees within ±10% over the range of 1–10 keV. Simulated EDS spectra are useful for developing an analytical strategy for challenging problems such as estimating trace detection levels.
Early diagnosis of symptomatic ovarian cancer in primary care in the UK: opportunities and challenges
Authors: Rampes Sanketh , Choy Shern-Ping 
Published: September 2022

Abstract

Background:
Ovarian cancer is the sixth most common cause of cancer-related death in the UK amongst women. Ovarian cancer presents particular challenges for general practitioners (GPs) to diagnose due to its rarity and presentation with non-specific symptoms.

Methods:
A narrative overview of the literature was conducted by searching PubMed and Researchgate for relevant articles, using keywords such as “ovarian cancer,” “primary care” and “diagnosis.”

Results and Discussion:
Studies have shown that in the UK, GPs have a lower readiness to refer and investigate potential cancer symptoms compared with their international counterparts; and this has been correlated with reduced survival. Early diagnosis can be facilitated through a people-focussed and system-based approach which involves both educating GPs and using risk algorithms, rapid diagnostic centres/multi-disciplinary centres and being data-driven through the identification of best practice from national audits. Further research is required into the best evidence-based early investigations for ovarian cancer and more effective biomarkers.
Results From a Decade of Optical Fiber Strainmeters at Piñon Flat Observatory
Authors: Hatfield William , Elliott Don , Wyatt Frank K. , Xie Surui , Zumberge Mark A. 
Published: September 2022

AbstractOptical fibers, stretched between anchors attached to the Earth and buried in boreholes and shallow trenches, offer an inexpensive and robust means to observe Earth strain. We have deployed several optical fiber strainmeters (OFSs) in boreholes, where thermal stability helps mitigate the noise from temperature changes. We have also constructed horizontal OFSs in 1‐m‐deep trenches of lengths 221 and 174 m. In these, a second optical fiber having a contrasting temperature coefficient provides a means to separate true strain from thermal noise. Signals in the seismic band from the horizontal strainmeters agree well with records from collocated seismometers, and the predominant ambient noise recorded by both techniques are consistent. Solid Earth strain tides with amplitude of 30 nε (nanostrain) are observed in these horizontal OFSs that agree well with those observed by collocated vacuum laser strainmeters. Noise at periods of a few days amounts to 50 nε. The two horizontal strainmeters show drift rates of up to 1 µε per month, and occasional false signals (evident from comparisons with the vacuum laser strainmeters) can accumulate occasionally to the order of 50 nε over times from hours to weeks. Results to date indicate that this technology on land could detect slow‐slip events of amplitude 100 nε and higher.