bluuebunny/crossref_metadata_2025_split huggingface dataset:
Geometric robustness and dynamic response management by structural topometry optimisation to reduce the risk for squeak and rattle
Authors: Bayani Mohsen , Lindkvist Karl , Tang Minh , Lindkvist Lars , Wickman Casper , Söderberg Rikard 
Published: May 2022

Abstract
Historically, squeak and rattle (S&R) sounds have been among the top quality problems and a major contributor to the warranty costs in passenger cars. Geometric variation is among the main causes of S&R. Though, geometric variation analysis and robust design techniques have been passively involved in the open-loop design activities in the predesign-freeze phases of car development. Despite the successful application of topometry optimisation to enhance attributes such as weight, durability, noise and vibration and crashworthiness in passenger cars, the implementation of closed-loop structural optimisation in the robust design context to reduce the risk for S&R has been limited. In this respect, the main obstacles have been the demanding computational resources and the absence of quantified S&R risk evaluation methods. In this work, a topometry optimisation approach is proposed to involve the geometric variation analysis in an attribute balancing problem together with the dynamic response of the system. The proposed method was used to identify the potential areas of a door component that needed structural reinforcement. The main objective was to enhance the design robustness to minimise the risk for S&R by improving the system response to static geometrical uncertainties and dynamic excitation.
Building dynamic capability through sequential ambidexterity: a case study of the transformation of a latecomer firm in China
Authors: Peng Xinmin , Lockett Martin , Liu Dianguang , Qi Baoxin 
Published: May 2022

AbstractSequential ambidexterity is a specific dynamic capability which can play an important role in the technological catch-up of latecomer firms with limited knowledge and resources. Through a longitudinal case study, the trajectory of a latecomer firm's transformation from a generic technology manufacturer to a world-class innovator is analysed. This paper finds that sequential ambidexterity can be the basis of building dynamic capability, which enabled a latecomer to become a market leader through three major transitions. It shows how the building of dynamic capability through sequential ambidexterity is dependent on four mechanisms: senior manager cognition of the environment; organization learning orientation; organization structure design; and process reconfiguration. Building dynamic capability is also dependent on alignment between these mechanisms within the firm. Theoretically, the paper enhances understanding of the micro-foundations of developing dynamic capability through sequential ambidexterity. It also suggests that three contingent dimensions in determining the optimal approach to ambidexterity are: (i) industry leading versus catch-up firms, (ii) the scale of the firm, and (iii) the diversity of the downstream market. Furthermore, the paper provides practical insights for latecomer firms seeking to catch-up with industry leaders.
COMMENTARY: THE GREAT DIVIDES
Authors: Chadha Jagjit S. 
Published: May 2022

Democracy is unstable as a political system as long as it remains a political system and nothing more, instead of being, as it should be, not only a form of government but a type of society, and a manner of life which is in harmony with that type. To make it a type of society requires an advance along two lines. It involves, in the first place, the resolute elimination of all forms of special privilege which favour some groups and depress others, whether their source be differences of environment, of education, or of pecuniary income. It involves, in the second place, the conversion of economic power, now often an irresponsible tyrant, into a servant of society, working within clearly defined limits and accountable for its actions to a public authority.R. H. Tawney, Equality, 1931.
THINKING ABOUT SOCIAL NORMS
Authors: Binmore Ken 
Published: May 2022

AbstractThis article argues that it is a waste of time seeking to treat populists as examples of homo economicus when seeking to persuade them that the conspiracy theories to which they subscribe are big lies. But it does not follow that homo economicus is worthless in this context. He has a role in explaining the evolution of the social norms whose violation is the root cause of the rise of populist movements. Such an approach requires a willingness to entertain both proximate and ultimate explanations of human behaviour simultaneously.
The motherhood wage penalty in Turkey
Authors: Özkan Değirmenci Hayriye Özgül 
Published: May 2022

AbstractWomen with children, on average, earn lower wages than those who do not have children. This is called the “motherhood wage penalty”. This study provides estimates of the wage penalty for working mothers in Turkey using the Turkish Household Labor Force Survey (HLFS), 2014–2018. The gross wage penalty is 21.3 percent, but it is entirely explained by human capital variables: education, marital status, and potential experience in the pooled cross-section. The bulk of the gross penalty is attributable to the higher educational attainment of the subsample of non-mothers compared to mothers. When the wage-setting mechanisms in the public versus private sectors, and differences in fertility exposure by age cohort conditional on education are accounted for, a clearer picture emerges. Empirical findings indicate that the wage penalty does not exist for mothers employed in the public sector but that there is a 3 percent penalty for mothers working in the private sector, with the highest value being 6.1 percent for university-educated young mothers. In addition, wage losses are higher for the younger age cohort, presumably due to leaves of absence from work for time spent caring for young children, which lead to skill erosion.
Jupiter's X‐Ray and UV Dark Polar Region
Authors: Dunn W. R. , Weigt D. M. , Grodent D. , Yao Z. H. , May D. , Feigelman K. , Sipos B. , Fleming D. , McEntee S. , Bonfond B. , Gladstone G. R. , Johnson R. E. , Jackman C. M. , Guo R. L. , Branduardi‐Raymont G. , Wibisono A. D. , Kraft R. P. , Nichols J. D. , Ray L. C. 
Published: May 2022

AbstractWe present 14 simultaneous Chandra X‐ray Observatory (CXO)‐Hubble Space Telescope (HST) observations of Jupiter's Northern X‐ray and ultraviolet (UV) aurorae from 2016 to 2019. Despite the variety of dynamic UV and X‐ray auroral structures, one region is conspicuous by its persistent absence of emission: the dark polar region (DPR). Previous HST observations have shown that very little UV emission is produced by the DPR. We find that the DPR also produces very few X‐ray photons. For all 14 observations, the low level of X‐ray emission from the DPR is consistent (within 2‐standard deviations) with scattered solar emission and/or photons spread by Chandra's Point Spread Function from known X‐ray‐bright regions. We therefore conclude that for these 14 observations the DPR produced no statistically significant detectable X‐ray signature.
Slab Induced Mantle Upwelling Beneath the Anatolian Plateau
Authors: Lynner Colton , Delph Jonathan R. , Portner Daniel E. , Beck Susan L. , Sandvol Eric , Özacar A. Arda 
Published: May 2022

AbstractThe subducting African Plate in the easternmost Mediterranean is actively tearing and deforming beneath the Anatolian Plate as the margin transitions from long‐lived subduction to collision. In central Anatolia, the subducting slab is characterized by both lateral and vertical slab tears. We investigate patterns of mantle flow around the edges of a contorting and fragmenting African slab segment, called the Cyprean slab, using measurements of shear wave splitting. We observe three distinct regions of coherent shear wave splitting that correlate with the segmentation boundaries of the Cyprean slab. Regionally coherent mantle flow occurs near both the eastern and western the edges of the slab. These regions of coherent splitting are separated by an area of null splitting that encompasses the Central Anatolian Volcanic Province near the easternmost edge of the slab. The null measurements likely result from mantle upwelling due to the displacement of asthenosphere from the vertical Cyprean slab.
PAHs in the North Atlantic Ocean and the Arctic Ocean: Spatial Distribution and Water Mass Transport
Authors: Liu Mengyang , Cai Minggang , Duan Mengshan , Chen Meng , Lohmann Rainer , Lin Yan , Liang Junhua , Ke Hongwei , Zhang Kai 
Published: May 2022

AbstractIn the Arctic Ocean, it is still unclear what role oceanic transport plays in the fate of semivolatile organic compounds. The strong‐stratified Arctic Ocean undergoes complex inputs and outputs of polycyclic aromatic hydrocarbons (PAHs) from the neighboring oceans and continents. To better understand PAHs’ transport processes and their contribution to high‐latitude oceans, surface seawater, and water column, samples were collected from the North Atlantic Ocean and the Arctic Ocean in 2012. The spatial distribution of dissolved PAHs (∑9PAH) in surface seawater showed an “Arctic Shelf > Atlantic Ocean > Arctic Basin” pattern, with a range of 0.3–10.2 ng L−1. Positive matrix factorization modeling results suggested that vehicle emissions and biomass combustion were the major PAHs sources in the surface seawater. According to principal component analysis, PAHs in different water masses showed unique profiles indicating their different origins. Carried by the Norwegian Atlantic Current (0–800 m) and East Greenland Current (0–300 m), PAH individuals’ net transport mass fluxes ranged from −4.4 ± 1.7 to 53 ± 39 tons year−1 to the Arctic Ocean. We suggested the limited contribution of ocean currents on PAHs’ delivery to the Arctic Ocean, but their role in modulating PAHs’ air–sea interactions and other biogeochemical processes needs further studies.
Knowledge‐Informed Deep Neural Networks for Solar Flare Forecasting
Authors: Li Ming , Cui Yanmei , Luo Bingxian , Ao Xianzhi , Liu Siqing , Wang Jingjing , Li Shuxin , Du Chenxi , Sun Xiaojing , Wang Xin 
Published: May 2022

AbstractRecently, although various deep learning techniques have been applied to building space weather prediction models, a large amount of relevant prior knowledge of solar eruptions and magnetic properties is ignored during the model development. By integrating prior knowledge in flare production into the convolutional neural network (CNN) structures, we have developed a knowledge‐informed deep neural network model aiming at forecasting solar flares. The line‐of‐sight magnetograms of Space‐weather HMI Active Region Patches (SHARP) from May 2010 to December 2018 are selected. We have surveyed the relationships between solar flares and both the active region (AR) area and magnetic type. When integrating prior knowledge into the CNNs, three aspects are considered: (a) keeping the magnetic structure unchanged (data preprocessing) while filling SHARP magnetograms into squares, (b) grouping the data samples into two subsets according to different flare productivities (sample grouping), and (c) adding AR area as an extra input parameter to the CNN (extra input parameter implementation). Pure CNN model, Fusion model 1, and Fusion model 2 are built to forecast M‐class or above flares in the next 48 hr, which involve data preprocessing, data preprocessing and sample grouping, and all the three aspects, respectively. Fusion model 2 that augments the most prior knowledge has the best performance. Our results imply that prior knowledge can play an important role in building deep learning flare forecasting models. In the future, adopting knowledge‐informed deep neural networks will be an effective way to further improve the forecasting performance for other space weather events.
Implicit and Explicit Biases for Recycled Water and Tap Water
Authors: Bass D. A. , McFadden B. R. , Costanigro M. , Messer K. D. 
Published: May 2022

AbstractIncreasing use of recycled water to irrigate agricultural products and decreasing consumption of bottled water are important components of sustainable water management practices and consumer‐driven efforts to improve water security and quality. However, consumers frequently discount agricultural products irrigated with recycled water relative to products irrigated with conventional water and place a premium on bottled water relative to tap water. This study measures consumer attitudes regarding recycled water and bottled water to understand more fully the reasons behind these preferences. We conduct two studies involving 2,616 adult consumers in the United States designed to measure consumer attitudes and preferences: the use of recycled water versus conventional water to irrigate food products and tap water versus bottled water for drinking. In each study, implicit attitudes are measured using an Implicit Association Test as well as explicit attitudes. We find that respondents have negative implicit attitudes regarding recycled water compared to conventional water and tap water compared to bottled water, and a negative explicit attitude toward recycled water. Tap water and food grown with recycled water were believed to be less healthy to consume and less tasty, although these are believed to be more sustainable options. Beliefs about water attributes (i.e., healthfulness, taste, and sustainability) are associated with attitudes, and both beliefs about attributes and attitudes are associated with preferences for products. Further, we find that respondents' stated preferences are consistent with their implicit and explicit attitudes.
Electron‐Only Reconnection as a Transition From Quiet Current Sheet to Standard Reconnection in Earth's Magnetotail: Particle‐In‐Cell Simulation and Application to MMS Data
Authors: Lu San , Lu Quanming , Wang Rongsheng , Pritchett Philip L. , Hubbert Mark , Qi Yi , Huang Kai , Li Xinmin , Russell C. T. 
Published: May 2022

AbstractStandard magnetic reconnection couples with both electron‐ and ion dynamics. Recently, a new type of magnetic reconnection, electron‐only reconnection without the coupling of ion dynamics, has been observed in space. Using a two‐dimensional particle‐in‐cell simulation, we show that in the externally‐driven magnetotail, electron‐only reconnection is a transition from quiet current sheet to standard reconnection. We find that (a) energy conversion j ⋅ E′ is around zero in quiet current sheet but nonzero in electron‐only reconnection, and (b) ion temperature does not change across electron‐only reconnection but peaks at the center of standard reconnection. These two differences can be used as criteria to distinguish magnetotail electron‐only reconnection from quiet current sheet and standard reconnection, respectively. Based on the two criteria, we justify that the MMS 17 June 2017 event is a magnetotail electron‐only reconnection event.
New Insights Into Subsurface Stratigraphy Northwest of Ascraeus Mons, Mars, Using the SHARAD and MARSIS Radar Sounders
Authors: Shoemaker E. S. , Carter L. M. , Garry W. B. , Morgan G. A. , Plaut J. J. 
Published: May 2022

AbstractThe Tharsis Montes volcanoes on Mars are the source of laterally extensive lava flows and other volcanic deposits generating a complex stratigraphy throughout the Tharsis Volcanic Province. We use SHAllow RADar (SHARAD) and Mars Advanced Radar for Subsurface and Ionospheric Sounding (MARSIS) observations in a region northwest of Ascraeus Mons to determine the composition, density, thickness, and spatial distribution of these emplaced volcanic materials. We identified subsurface reflectors along 43 SHARAD and five MARSIS observations. Reflectors in the volcanic plains are interpreted to be sequences of basaltic lava flows with interspersed pyroclastic material, dust, or regolith during a hiatus in activity. Others correspond to the base of three major flow fields. Several plain reflectors were detected by both MARSIS and SHARAD. Other notable reflectors were identified near Ascraeus' flank where lava buried glacially derived sediment. We derived thickness and other material properties for flows using their distinct topographic boundary visible in the radar images. Permittivity ranged from 7.0 to 11.2 corresponding to lava flow densities of 3.20–3.52 g/cm3. Flow thicknesses ranged from 19.8 to 60.2 m. Loss tangents were low for the flow fields ranging from 0.024 to 0.043. Loss tangents in the plains ranged from 0.010 to 0.076. Higher loss tangents correspond to lossier regions that may have higher concentrations of radar absorbing minerals like hematite. Surface roughness controls where reflectors are detected. SHARAD detects the base of three out of the four flow fields in this region with muted surface roughness from dust mantling and erosion.
A miniaturized mechanical antenna based on FEP/THV unipolar electrets for extremely low frequency transmission
Authors: Cui Yong , Wu Ming , Li Zhaoyang , Song Xiao , Wang Chen , Yuan Haiwen , Yang Zhi-Xin , Zhong Junwen 
Published: May 2022

AbstractAn electret-based mechanical antenna (EBMA), which can transmit extremely low frequency (ELF) electromagnetic signals, has the advantages of miniaturization and high transmitting efficiency, with great potential applications in air, underwater, and underground communications. To improve the charge density of the electret, which is a key factor in determining the radiation performance of an EBMA, this work proposes a fluorinated ethylene propylene/terpolymer of tetrafluoroethylene, hexafluoropropylene and vinylidene fluoride (FEP/THV) unipolar electret exhibiting negative polarity, reaching a total charge density up to −0.46 mC/m2 for each layer of electret. Long transmission distances can be achieved in sea water, soil, and air using a 3-layer-FEP/THV-based EBMA with a compact volume of 5 × 10−4 m3. As an application demonstration, binary ASCII-coded ELF information of “BUAA” is successfully transmitted with a power consumption < 5 W.
Ribosomal RNA regulates chromosome clustering during mitosis
Authors: Ma Kai , Luo Man , Xie Guanglei , Wang Xi , Li Qilin , Gao Lei , Yu Hongtao , Yu Xiaochun 
Published: May 2022

AbstractNoncoding RNAs are known to associate with mitotic chromosomes, but the identities and functions of chromosome-associated RNAs in mitosis remain elusive. Here, we show that rRNA species associate with condensed chromosomes during mitosis. In particular, pre-rRNAs such as 45S, 32S, and 30S are highly enriched on mitotic chromosomes. Immediately following nucleolus disassembly in mitotic prophase, rRNAs are released and associate with and coat each condensed chromosome at prometaphase. Using unbiased mass spectrometry analysis, we further demonstrate that chromosome-bound rRNAs are associated with Ki-67. Moreover, the FHA domain and the repeat region of Ki-67 recognize and anchor rRNAs to chromosomes. Finally, suppression of chromosome-bound rRNAs by RNA polymerase I inhibition or by using rRNA-binding-deficient Ki-67 mutants impair mitotic chromosome dispersion during prometaphase. Our study thus reveals an important role of rRNAs in preventing chromosome clustering during mitosis.
PFKP alleviates glucose starvation-induced metabolic stress in lung cancer cells via AMPK-ACC2 dependent fatty acid oxidation
Authors: Chen Jiaqing , Zou Li , Lu Guang , Grinchuk Oleg , Fang Lei , Ong Derrick Sek Tong , Taneja Reshma , Ong Choon-Nam , Shen Han-Ming 
Published: May 2022

AbstractCancer cells adopt metabolic reprogramming to promote cell survival under metabolic stress. A key regulator of cell metabolism is AMP-activated protein kinase (AMPK) which promotes catabolism while suppresses anabolism. However, the underlying mechanism of AMPK in handling metabolic stress in cancer remains to be fully understood. In this study, by performing a proteomics screening of AMPK-interacting proteins in non-small-cell lung cancer (NSCLC) cells, we discovered the platelet isoform of phosphofructokinase 1 (PFKP), a rate-limiting enzyme in glycolysis. Moreover, PFKP was found to be highly expressed in NSCLC patients associated with poor survival. We demonstrated that the interaction of PFKP and AMPK was greatly enhanced upon glucose starvation, a process regulated by PFKP-associated metabolites. Notably, the PFKP–AMPK interaction promoted mitochondrial recruitment of AMPK which subsequently phosphorylated acetyl-CoA carboxylase 2 (ACC2) to enhance long-chain fatty acid oxidation, a process helping maintenance of the energy and redox homeostasis and eventually promoting cancer cell survival under glucose starvation. Collectively, we revealed a critical non-glycolysis-related function of PFKP in regulating long-chain fatty acid oxidation via AMPK to alleviate glucose starvation-induced metabolic stress in NSCLC cells.
The Ube2m-Rbx1 neddylation-Cullin-RING-Ligase proteins are essential for the maintenance of Regulatory T cell fitness
Authors: Wu Di , Li Haomin , Liu Mingwei , Qin Jun , Sun Yi 
Published: May 2022

AbstractNeddylation-mediated activation of Cullin-RING E3 Ligases (CRLs) are necessary for the degradation of specific immune regulatory proteins. However, little is known about how these processes govern the function of regulatory T (Treg) cells. Here we show that mice with Treg cell-specific deletion of Rbx1, a dual E3 for both neddylation and ubiquitylation by CRLs, develop an early-onset fatal inflammatory disorder, characterized by disrupted Treg cell homeostasis and suppressive functions. Specifically, Rbx1 is essential for the maintenance of an effector Treg cell subpopulation, and regulates several inflammatory pathways. Similar but less severe phenotypes are observed in mice having Ube2m, a neddylation E2 conjugation enzyme, deleted in their Treg cells. Interestingly, Treg-specific deletion of Rbx2/Sag or Ube2f, components of a similar but distinct neddylation-CRL complex, yields no obvious phenotype. Thus, our work demonstrates that the Ube2m-Rbx1 axis is specifically required for intrinsic regulatory processes in Treg cells; and that Rbx1 might also play Ube2m-independent roles in maintaining the fitness of Treg cells, suggesting a layer of complexity in neddylation-dependent activation of CRLs.
Disaggregated data on age and sex for the first 250 days of the COVID-19 pandemic in Bucharest, Romania
Authors: Hâncean Marian-Gabriel , Ghiță Maria Cristina , Perc Matjaž , Lerner Jürgen , Oană Iulian , Mihăilă Bianca-Elena , Stoica Adelina Alexandra , Bunaciu David-Andrei 
Published: May 2022

AbstractExperts worldwide have constantly been calling for high-quality open-access epidemiological data, given the fast-evolving nature of the COVID-19 pandemic. Disaggregated high-level granularity records are still scant despite being essential to corroborate the effectiveness of virus containment measures and even vaccination strategies. We provide a complete dataset containing disaggregated epidemiological information about all the COVID-19 patients officially reported during the first 250 days of the COVID-19 pandemic in Bucharest (Romania). We give the sex, age, and the COVID-19 infection confirmation date for 46,440 individual cases, between March 7thand November 11th, 2020. Additionally, we provide context-wise information such as the stringency levels of the measures taken by the Romanian authorities. We procured the data from the local public health authorities and systemized it to respond to the urgent international need of comparing observational data collected from various populations. Our dataset may help understand COVID-19 transmission in highly dense urban communities, perform virus spreading simulations, ascertain the effects of non-pharmaceutical interventions, and craft better vaccination strategies.