bluuebunny/crossref_metadata_2025_split huggingface dataset:
Offer Price Information and the Exercise of Market Power: The Effect of the Publication of the Historical Trading Report on Competition in the Alberta Electricity Market
Authors: Olmstead Derek E.H. , Ayres Matthew J. , Lomas Peter B.R. 
Published: October 2020

This paper considers the effect of the publication of offer price information on unilateral market power in Alberta’s electricity market. This market is an hourly auction characterized by repeated interaction among a small number of producers, common knowledge of costs and production capabilities, and price inelastic demand. For the period July 13, 2000 to May 18, 2017, offer prices for each hour were published by the market operator, the Alberta Electric System Operator (AESO), in the Historical Trading Report (HTR) after the end of the hour. Using counter-factual analysis from 2010 to 2015 (52,584 hours), the paper finds that the effect of offer price changes after the HTR publication was to raise the average hourly price for electricity in Alberta by $2.48/MWh or about 4.2%, which raised the cost of electricity for Alberta consumers during the six-year period by approximately $1.14 billion. Based on an earlier version of this paper, the AESO was instructed by Alberta’s utilities regulator to cease publication of the HTR.
“QUANDO VEM UMA MÃE CHEFE DE FAMÍLIA PARA A TERAPIA”: A ÓTICA DE TERAPEUTAS DE FAMÍLIA SOBRE A MONOPARENTALIDADE FEMININA
Authors: Verza Fabiana , Strey Marlene Neves 
Published: October 2020

Investigou-se a percepção de cinco terapeutas de família acerca da monoparentalidade feminina e o papel dos estudos de gênero em sua formação profissional. Para tanto, utilizou-se de entrevista individual semidirigida. A análise crítica de discurso com abordagem sistêmica foi empregada, enfatizando os micro e macroelementos presentes nos discursos. Os resultados indicaram uma defasagem de estudos de gênero na formação básica das profissionais, que foi em parte suprida pela formação em Terapia Familiar Sistêmica. Percepções contraditórias e complementares caracterizaram o processo de análise dos dados. Ao se referirem às mulheres chefes de família e às suas relações com o contexto socioambiental e familiar, as falas variaram entre vieses de patologia e de promoção de saúde. Tais variações foram divididas entre a visão clínica e psicossocial do fenômeno e exigiram um posicionamento crítico de análise dos dados.
Palavras-chave: Monoparentalidade feminina. Gênero. Terapia Familiar Sistêmica.
A POTÊNCIA DO PROCESSO GRUPAL
Authors: Vieira-Silva Marcos 
Published: October 2020

Partindo de um programa de pesquisa intervenção psicossocial, o trabalho apresenta questionamentos e considerações sobre grupos comunitários e institucionais, objeto de ações de pesquisa e extensão do LAPIP - Laboratório de Pesquisa e Intervenção Psicossocial da UFSJ. As perspectivas de análises partem de autores que trabalham com a concepção dialética sobre grupos humanos e o processo grupal, como Ignácio Martín-Baró e Silvia Lane, e com as concepções de Grupo Operativo, de Enrique Pichón-Rivière e oficinas de grupo, de Lúcia Afonso. Nos grupos investigados/atendidos encontramos fenômenos grupais produtores de identidade e ativadores de consciência, além de uma insistência em se manterem como grupos, resistindo ao individualismo e ao isolamento social. Processos de coesão e identidades coletivas são produzidos em associação com mecanismos de solidariedade e afetividade. Presenciamos relações de poder mais igualitárias, implicando menos submissão e mais disposição para o trabalho educativo, com mais possibilidades de produção coletiva de conhecimentos.
Palavras Chave: Grupo; Processo Grupal; Afetividade; Identidade Grupal; Inclusão Psicossocial.
The Battle Between Politics and Science Is Costing Us a Timely Victory Over the COVID-19 Pandemic
Authors: Hahn Marc B. 
Published: October 2020

Abstract
Against the backdrop of the COVID-19 pandemic, the author discusses what he views as a persistent tension between the nature and aims of politics vs science. He outlines a call to action for osteopathic physicians to stand with science, advocate for best practices, undertake dialogue with local and state health authorities, and act as role models for colleagues and patients alike.
Regional classification maps for engineered natural ventilation design of office buildings in Japan
Authors: Hiyama Kyosuke 
Published: October 2020

AbstractNatural ventilation is an essential component of green building design. Thoughtful consideration of natural ventilation in the early stages of building design is important for its successful integration. In this paper, we suggest the utilization of regional classification maps. Two maps are presented: a map of target air change rates for natural ventilation and a map of the total hours in which natural ventilation can be used throughout the year. The target air change rate is defined as the point at which the slope of the increase in the cooling effect due to natural ventilation reaches a maximum, and the proposed maps show the distributions of the target air change rate in Japan. The total natural ventilation hours are determined by calculating the period during which the outdoor air is usable for natural ventilation. The maps were created based on 836 points of weather data from Japan. These maps can help architects and building engineers understand the effects expected from natural ventilation system integration during the process of decision making in the early stages of building design.
Rational Design of Core‐Shell ZnTe@N‐Doped Carbon Nanowires for High Gravimetric and Volumetric Alkali Metal Ion Storage
Authors: Zhang Shuanggui , Qiu Lifeng , Zheng Yang , Shi Qiufan , Zhou Tengfei , Sencadas Vitor , Xu Yuling , Zhang Shilin , Zhang Longhai , Zhang Chaofeng , Zhang Chuan‐Ling , Yu Shu‐Hong , Guo Zaiping 
Published: October 2020

AbstractAmong the various semiconductor materials, zinc telluride possesses the lowest electron affinity and ultrafast charge separation capability, facilitating improved charge transfer kinetics. In addition, ZnTe has a relatively high density, contributing to high volumetric capacity. Here, 1D N‐doped carbon‐coated ZnTe core‐shell nanowires (ZnTe@C) are designed and prepared via a facile ion‐exchange and carbonization technique. When evaluated as anode for metal ion batteries, it demonstrates superior electrochemical performance in both Li and Na ion storage, including high gravimetric and volumetric capacities (1119 mA h g−1 and 906 mA h cm−3, respectively, at 100 mA g−1 for Li ion storage), excellent high‐rate capability, and long‐term cycling stability. This remarkable electrochemical performance is attributed to the low electron affinity and high density of ZnTe, and the amorphous nature of the N‐doped carbon layer in the heterostructured ZnTe@C nanowires, which not only provide fast charge transfer paths, but also effectively maintain the structural and electrical integrity of the ZnTe. The strategy of embedding high density and high‐performance active materials in highly conductive nanostructures represents an effective way of achieving electrode materials with excellent gravimetric and volumetric capacities towards superior energy storage systems.
Untethered Feel‐Through Haptics Using 18‐µm Thick Dielectric Elastomer Actuators
Authors: Ji Xiaobin , Liu Xinchang , Cacucciolo Vito , Civet Yoan , El Haitami Alae , Cantin Sophie , Perriard Yves , Shea Herbert 
Published: October 2020

AbstractHead‐mounted displays for virtual reality (VR) and augmented reality (AR) allow users to see highly realistic virtual worlds. The wearable haptics that enable feeling and touching these virtual objects are typically bulky, tethered, and provide only low fidelity feedback. A particularly challenging type of wearable human‐machine interface is feel‐through haptics: ultra‐thin wearables so soft as to be mechanically imperceptible when turned off, yet generating sufficient force when actuated to make virtual objects feel tangible, or to change the perceived texture of a physical object. Here, 18 µm thick soft dielectric elastomer actuators (DEA), directly applied on the skin, reports rich vibrotactile feedback generation from 1 Hz to 500 Hz. Users correctly identifies different frequency and sequence patterns with success rates from 73 to 97% for devices applied on their fingertips. An untethered version weighing only 1.3 grams allowed blindfolded users to correctly identify letters by “seeing” them through their fingers. The silicone‐based DEA membrane is mechanically transparent, enabling wearable haptics for the many applications where hand dexterity is critical. The feel‐through DEA can be placed in array format anywhere on the body.
Discovery of Real‐Space Topological Ferroelectricity in Metallic Transition Metal Phosphides
Authors: Wei Xian‐Kui , Bihlmayer Gustav , Zhou Xiaodong , Feng Wanxiang , Kolen'ko Yury V. , Xiong Dehua , Liu Lifeng , Blügel Stefan , Dunin‐Borkowski Rafal E. 
Published: October 2020

AbstractFerroelectric metals—with coexisting ferroelectricity and structural asymmetry—challenge traditional perceptions because free electrons screen electrostatic forces between ions, the driving force of breaking the spatial inversion symmetry. Despite ferroelectric metals having been unveiled one after another, topologically switchable polar objects with metallicity have never been identified so far. Here, the discovery of real‐space topological ferroelectricity in metallic and non‐centrosymmetric Ni2P is reported. Protected by the rotation–inversion symmetry operation, it is found that the balanced polarity of alternately stacked polyhedra couples intimately with elemental valence states, which are verified using quantitative electron energy‐loss spectroscopy. First‐principles calculations reveal that an applied in‐plane compressive strain creates a tunable bilinear double‐well potential and reverses the polyhedral polarity on a unit‐cell scale. The dual roles of nickel cations, including polar displacement inside polyhedral cages and a 3D bonding network, facilitate the coexistence of topological polarity with metallicity. In addition, the switchable in‐plane polyhedral polarity gives rise to a spin–orbit‐coupling‐induced spin texture with large momentum‐dependent spin splitting. These findings point out a new direction for exploring valence–polarity–spin correlative interactions via topological ferroelectricity in metallic systems with structural asymmetry.
Nanoscale Measurements of Elastic Properties and Hydrostatic Pressure in H2‐Bulged MoS2 Membranes
Authors: Di Giorgio Cinzia , Blundo Elena , Pettinari Giorgio , Felici Marco , Lu Yuerui , Cucolo Anna Maria , Polimeni Antonio , Bobba Fabrizio 
Published: October 2020

AbstractThe combination of extremely high stiffness and bending flexibility with tunable electrical and optical properties makes van der Waals transition metal dichalcogenides appealing both for fundamental science and applied research. By taking advantage of localized H2‐bulged MoS2 membranes, an innovative approach, based on atomic force microscopy nanoindentation, is demostrated and discussed here, aiming at measuring elastic and thermodynamic properties of nanoblisters made of 2D materials. The results, interpreted in the membrane limit of the Föppl–von Karman equation, lead to the quantification of the internal pressure and mole number of the trapped H2 gas, as well as of the stretching modulus and adhesion energy of the MoS2 membrane. The latter is discussed in the limit of strong (clamped and fully bonded interlayer interface) shear, as experimentally achieved in the investigated H2‐bulged 2D blisters. Moreover, this approach allows to quantify the stress, and consequently the strain, locally imposed to the MoS2 membrane by the bulging of the domes.
Stacked Dual‐Pore Architecture for Deciphering and Manipulating Dynamics of Individual Nanoparticles
Authors: Liao Caizhi , Antaw Fiach , Wuethrich Alain , Trau Matt 
Published: October 2020

AbstractUnderstanding the behavior and interactions of nanoscale objects in selected microenvironments represents a great gateway to explore complex processes in nature. Label‐free methods such as resistive‐pulse sensing (RPS) have emerged as the most promising toolkits to decipher the characteristics of nano‐entities, nanoparticles in particular, with single molecular resolution. However, current single pore systems are inapplicable for sensing and controlling simultaneously single nanoparticles in motion. Here, two‐photon nanolithography to create vertically stacked RPS dual‐pores with precise 3D structure is proposed for the first time. The prepared dual‐pores afford time of flight analysis to finely decipher the molecular dynamics in terms of nanoparticle transport velocities and inter‐particle coupling effects. By further optimizing the 3D pore geometry, it is demonstrated that these dual‐pores can be applied for single nanoparticle capture and release studies.
Ultrahigh Power Output from Triboelectric Nanogenerator Based on Serrated Electrode via Spark Discharge
Authors: Kim Jihye , Cho Hanchul , Han Maeum , Jung Young , Kwak Sung Soo , Yoon Hong‐Joon , Park Byunggeon , Kim Hyeok , Kim Hyoungjae , Park Jinhyoung , Kim Sang‐Woo 
Published: October 2020

AbstractAn ultrahigh power output from a triboelectric nanogenerator (TENG) with a serrated electrode in a low‐frequency contact‐separation mode which is able to directly drive high voltage‐operating devices without the need for an external power supply is demonstrated. When a serrated electrode‐based TENG (SE‐TENG) is driven, the microstructurally serrated electrode creates a spark discharge in the gap between the serrated electrode and a wire, resulting in tremendously boosted triboelectric power output. Based on the spark discharge phenomenon, a boost adaptor is designed to secondarily boost the triboelectric power output performance, and consequently an ultrahigh triboelectric output voltage of 5 kV and current density of 2 A m−2 are achieved. The boost adaptor concept can be applied to any typical TENG for achieving higher power‐generating performance. Finally, two high voltage applications, a Crookes tube and plasma generation, are demonstrated using the SE‐TENG and boost adaptor without any external power supply equipment. The ultrahigh power‐generating SE‐TENG based on the spark discharge phenomenon occurring in the unique electrode structure has considerable potential to operate high voltage applications directly in harsh environments where electricity cannot be supplied.
A spectral approach of suspending solid particles in a turbulent stirred vessel
Authors: Giacomelli Jason J. , Van den Akker Harry E. A. 
Published: October 2020

AbstractThe 2015 Grenville‐Mak‐Brown (GMB) correlation for predicting the just suspended condition assumes that the length scale of the suspending eddy is equivalent to the particle diameter. This article investigates the role of the time scale of the relevant eddies with respect to the particle response time. The local turbulence just above the tank bottom is gauged by means of single‐phase LESs at the just suspended conditions determined in new experiments in dilute suspensions. By means of a novel nondimensional Suspension number we found that the relevant suspending eddies in the inertial subrange are 1.2–1.5 times larger than the particle size while the required eddy time scale is of the order of two times the particle response time. Further, we concluded that the mean energy dissipation rate is a suitable approximation of the local energy responsible for suspension. These results do not impact the effectiveness of the GMB correlation.
Intraspecific variability in human maxillary bone modeling patterns during ontogeny
Authors: Schuh Alexandra , Gunz Philipp , Villa Chiara , Kupczik Kornelius , Hublin Jean‐Jacques , Freidline Sarah E. 
Published: October 2020

AbstractObjectivesThis study compares the ontogenetic bone modeling patterns of the maxilla to the related morphological changes in three human populations to better understand how morphological variability within a species is established during ontogeny at both micro‐ and macroscopic levels.Materials and methodsThe maxillary bones of an ontogenetic sample of 145 subadult and adult individuals from Greenland (Inuit), Western Europe (France, Germany, and Portugal), and South Africa (Khoekhoe and San) were analyzed. Bone formation and resorption were quantified using histological methods to visualize the bone modeling patterns. In parallel, semilandmark geometric morphometric techniques were used on 3D models of the same individuals to capture the morphological changes. Multivariate statistics were applied and shape differences between age groups were visualized through heat maps.ResultsThe three populations show differences in the degree of shape change acquired during ontogeny, leading to divergences in the developmental trajectories. Only subtle population differences in the bone modeling patterns were found, which were maintained throughout ontogeny. Bone resorption in adults mirrors the pattern found in subadults, but is expressed at lower intensities.DiscussionOur data demonstrate that maxillary morphological differences observed in three geographically distinct human populations are also reflected at the microscopic scale. However, we suggest that these differences are mostly driven by changes in rates and timings of the cellular activities, as only slight discrepancies in the location of bone resorption could be observed. The shared general bone modeling pattern is likely characteristic of all Homo sapiens, and can be observed throughout ontogeny.
Postoperative placement of an anti‐fibrotic poly L‐lactide electrospun fibrous membrane after sinus surgery
Authors: Zhang Tao , Wang Wei , Cheng Ruoyu , Tang Ziying , Chen Zhengming , Cui Wenguo , Lian Bijun , Zheng Hongliang , Tang Haihong 
Published: October 2020

BackgroundEndoscopic sinus surgery (ESS) is used to treat chronic rhinosinusitis. However, nasal adhesions often develop postoperatively, triggered by chronic inflammation and local fibrosis. A poly L‐lactide (PLLA) electrospun microfibrous membrane is a functional biodegradable material that can be placed on the wound surface to protect the wound and prevent adhesions.MethodsWe divided 24 rabbits randomly into 2 groups, a control operation group (group A) and an operation+PLLA placement group (group B). We investigated the anti‐fibrotic effects of the topical biomaterial after sinus surgery. We placed PLLA fibrous membranes in the sinus cavity of group B rabbits after sinus surgery, and then evaluated changes in the mucosa and in the levels of collagen fibers, interleukin 4 (IL‐4), IL‐8, tumor necrosis factor α (TNF‐α), transforming growth factor β1 (TGF‐β1), α‐smooth muscle actin (α‐SMA), and collagen I (Col I), using morphological and molecular biological methods.ResultsPLLA fibrous membranes did not inhibit the synthesis of messenger RNAs (mRNAs) encoding IL‐4, IL‐8, or TNF‐α, or the protein levels, indicating that the membrane did not have an anti‐inflammatory effect. However, the membrane inhibited the synthesis of mRNAs encoding TGF‐β1, α‐SMA, and Col I, and reduced collagen production. Thus, the nanostructured membrane inhibited fibroblast proliferation.ConclusionThe PLLA membrane had anti‐fibrotic effects, and may be used to prevent fibrosis and adhesions after ESS in human patients.
Noninvasive Characterization of Human Glymphatics and Meningeal Lymphatics in an in vivo Model of Blood–Brain Barrier Leakage
Authors: Wu Chia‐Hung , Lirng Jiing‐Feng , Ling Yu‐Hsiang , Wang Yen‐Feng , Wu Hsiu‐Mei , Fuh Jong‐Ling , Lin Po‐Chen , Wang Shuu‐Jiun , Chen Shih‐Pin 
Published: October 2020

ObjectiveTo evaluate human glymphatics and meningeal lymphatics noninvasively.MethodsThis prospective study implemented 3‐dimensional (3D) isotropic contrast‐enhanced T2 fluid‐attenuated inversion recovery (CE‐T2‐FLAIR) imaging with a 3T magnetic resonance machine to study cerebral glymphatics and meningeal lymphatics in patients with reversible cerebral vasoconstriction syndrome (RCVS) with (n = 92) or without (n = 90) blood–brain barrier (BBB) disruption and a diseased control group with cluster headache (n = 35). The contrast agent gadobutrol (0.2mmol/kg [0.2ml/kg]) was administered intravenously in all study subjects.ResultsIn total, 217 patients (182 RCVS, 35 cluster headache) were analyzed and separated into 2 groups based on the presence or absence of visible gadolinium (Gd) leakage. Para‐arterial tracer enrichment was clearly depicted in those with overt BBB disruption, while paravenous and parasinus meningeal contrast enrichment was evident in both groups. Paravenous and parasinus contrast enrichment remained in RCVS patients in the remission stage and in cluster headache patients, suggesting that these meningeal lymphatic channels were universal anatomical structures rather than being phase‐ or condition‐specific. Additionally, we demonstrated nodular leptomeningeal enhancement in 32.3% of participants, which might represent potential lymphatic reservoirs. Four selected RCVS patients who received consecutive contrasted 3D isotropic FLAIR imaging after gadobutrol administration showed that the Gd persisted for at least 54 minutes and was completely cleared within 18 hours.InterpretationThis large‐scale in vivo study successfully demonstrated the putative human para‐arterial glymphatic transports and meningeal lymphatics by clear depiction of para‐arterial, parasinus, and paravenous meningeal contrast enrichment using high‐resolution 3D isotropic CE‐T2‐FLAIR imaging noninvasively; this technique may serve as a basis for further studies to delineate clinical relevance of glymphatic clearance. ANN NEUROL 2021;89:111–124
Light‐Promoted Copper‐Catalyzed Enantioselective Alkylation of Azoles
Authors: Li Chen , Chen Bin , Ma Xiaodong , Mo Xueling , Zhang Guozhu 
Published: October 2020

AbstractA catalytic asymmetric alkylation of azoles with secondary 1‐arylalkyl bromides through direct C−H functionalization is reported. Under blue‐light photoexcitation, a copper(I)/carbazole‐based bisoxazoline (CbzBox) catalytic system exhibits good reactivity and high stereoselectivity, thus offering an efficient strategy for the construction of chiral alkyl azoles. These reactions proceed at low temperature and are compatible with a wide range of azoles.
500‐Fold Amplification of Small Molecule Circularly Polarised Luminescence through Circularly Polarised FRET
Authors: Wade Jessica , Brandt Jochen R. , Reger David , Zinna Francesco , Amsharov Konstantin Y. , Jux Norbert , Andrews David L. , Fuchter Matthew J. 
Published: October 2020

AbstractStrongly dissymmetric circularly polarised (CP) luminescence from small organic molecules could transform a range of technologies, such as display devices. However, highly dissymmetric emission is usually not possible with small organic molecules, which typically give dissymmetric factors of photoluminescence (gPL) less than 10−2. Here we describe an almost 103‐fold chiroptical amplification of a π‐extended superhelicene when embedded in an achiral conjugated polymer matrix. This combination increases the |gPL| of the superhelicene from approximately 3×10−4 in solution to 0.15 in a blend film in the solid‐state. We propose that the amplification arises not simply through a chiral environment effect, but instead due to electrodynamic coupling between the electric and magnetic transition dipoles of the polymer donor and superhelicene acceptor, and subsequent CP Förster resonance energy transfer. We show that this amplification effect holds across several achiral polymer hosts and thus represents a simple and versatile approach to enhance the g‐factors of small organic molecules.