bluuebunny/crossref_metadata_2025_split huggingface dataset:
Room‐Temperature Negative Differential Resistance in Surface‐Supported Metal‐Organic Framework Vertical Heterojunctions
Authors: Albano Luiz G. S. , de Camargo Davi H. S. , Schleder Gabriel R. , Deeke Samantha G. , Vello Tatiana P. , Palermo Leirson D. , Corrêa Cátia C. , Fazzio Adalberto , Wöll Christof , Bufon Carlos C. B. 
Published: July 2021

AbstractThe advances of surface‐supported metal‐organic framework (SURMOF) thin‐film synthesis have provided a novel strategy for effectively integrating metal‐organic framework (MOF) structures into electronic devices. The considerable potential of SURMOFs for electronics results from their low cost, high versatility, and good mechanical flexibility. Here, the first observation of room‐temperature negative differential resistance (NDR) in SURMOF vertical heterojunctions is reported. By employing the rolled‐up nanomembrane approach, highly porous sub‐15 nm thick HKUST‐1 films are integrated into a functional device. The NDR is tailored by precisely controlling the relative humidity (RH) around the device and the applied electric field. The peak‐to‐valley current ratio (PVCR) of about two is obtained for low voltages (<2 V). A transition from a metastable state to a field emission‐like tunneling is responsible for the NDR effect. The results are interpreted through band diagram analysis, density functional theory (DFT) calculations, and ab initio molecular dynamics simulations for quasisaturated water conditions. Furthermore, a low‐voltage ternary inverter as a multivalued logic (MVL) application is demonstrated. These findings point out new advances in employing unprecedented physical effects in SURMOF heterojunctions, projecting these hybrid structures toward the future generation of scalable functional devices.
Hysteretic load behavior of pre‐casted reinforced concrete shear wall systems with high thermal resistance capability
Authors: Kebeli Yunus Emre , Özdemir Anıl , Çakmak Coşkun , Kopraman Yağmur , Anil Özgür , Tapan Mucip 
Published: July 2021

ABSTRACTIt is essential to determine the thermal conductivity and earthquake performances by developing earthquake‐resistant building systems that have high thermal insulation properties that will be economical for people considering the need for energy deficit and low‐cost earthquake‐resistant residences in the world. This study aims to evaluate the seismic performance of pre‐casted reinforced concrete shear wall systems with double layer high thermal resistance capability and compare to standard monolithic reinforced concrete shear wall systems with non‐high thermal resistance capability. The coating material used for thermal insulation was developed as an inorganic, economical, easily applicable, high‐fire resistance capable and not to cause the problems observed in the currently used products. In the research, new generation methods were used to reduce the unit weight of cement binder inorganic insulation material to low levels and provide high thermal resistance features. The seismic performance tests of the new double insulation layer, pre‐casted reinforced concrete shear wall system were realized. The seismic performance of conventional reinforced concrete shear walls was compared with the developed system by testing lateral reversed cyclic loading that simulates the earthquake.
Reliability assessment of existing structures using results of nondestructive testing
Authors: Küttenbaum Stefan , Braml Thomas , Taffe Alexander , Keßler Sylvia , Maack Stefan 
Published: July 2021

AbstractMaking optimal decisions about the reliability of existing structures requires that the information used in assessment adequately represents the properties and the condition of the structures. The knowledge gap regarding a structure to be assessed can be successively filled by individually purposeful observations on site. This paper gives an overview of an approach for utilizing nondestructively gathered measurement results in reliability assessment of existing structures. An essential part of measurement‐based stochastic modeling of basic variables is the calculation of measurement uncertainties, which serves to establish confidence in measurement, to ensure the comparability of unambiguously expressed measurement results, and to quantify the quality of the measured information. Regarding the current discourse on how to treat information collected on‐site in the context of assessment, the authors recommend that measurement uncertainty becomes an uncertainty component mandatorily to be represented in measurement‐based stochastic models. The main steps of the proposed concept are presented, and the advantages of its application are emphasized by means of a prestressed concrete bridge as case study. The bridge is assessed regarding the serviceability limit state decompression using ultrasonic and radar data measured at the structure.
MBSE delivers significant return on investment in evolutionary development of complex SoS
Authors: Rogers Edward B. , Mitchell Steven W. 
Published: July 2021

AbstractThe Submarine Warfare Federated Tactical Systems (SWFTS) is a rapidly evolving combat system of systems (SoS) product family. Managing the annual baseline updates requires processing thousands of baseline change requests, then coordinating and verifying their implementation. The complexity of this effort, which involves well over ten million source‐lines‐of‐code (SLOC) as well as Commercial‐Off‐the‐Shelf (COTS) and military‐unique hardware, is compounded by being deployed in ten variants.After a feasibility study in 2010 the SWFTS systems engineering and integration program started a transition from traditional requirements database and document‐centric systems engineering (DCSE) to a model‐based systems engineering (MBSE) process. At that time there was little solid evidence in the literature for a positive Return on Investment (ROI) for moving from DCSE to MBSE.Applying MBSE to this program has resulted in measurable monetary and operational benefits. We 1) summarize the DCSE to MBSE transition, 2) describe the accomplishments and observations to date, 3) define the metrics collected, and 4) quantify the achieved ROI. Background on the systems engineering and integration (SE&I) process and an apples‐to‐apples comparison of SE quality and efficiency are provided. The raw SE&I efficiencies of the DCSE and MBSE approaches are documented, along with conclusions showing that the MBSE approach delivers a positive ROI through higher quality SE products at significantly less cost‐per‐change, enables managing more baselines and SoS complexity using constant resources, and reduces the cost of the downstream integration effort.
Big data and decision‐making in international business
Authors: Ulman Milos , Musteen Martina , Kanska Eva 
Published: July 2021

AbstractDrawing on the literature on decision‐making in international business (IB), we discuss how the advancements in big data, specifically business intelligence and analytics (BI&A) applications, are expected to affect the processes underlying IB decision‐making. We provide an overview of BI&A systems with focus on their key levers (i.e., data volume, variety, and velocity), link it to the existing IB literature and develop a theoretical framework that considers the role of specific BI&A mechanisms in IB decision‐making. By examining the expected impact of the BI&A applications on decision‐making in the IB context, we fill a gap in the IB literature. We do so by linking three important levers of BI&A (data volume, variety, and velocity) to three key dimensions of IB decisions—uncertainty, complexity, and dynamism. We provide examples of how specific features of BI&A applications can help managers deal with the challenges of decision‐making in the IB context.
Mixed signals: The inadequacy of provider‐per‐enrollee ratios for assessing network adequacy in California (and elsewhere)
Authors: Haeder Simon F. , Weimer David L. , Mukamel Dana B. 
Published: July 2021

AbstractHealth insurance regulators often set minimum ratios of provider = per‐enrollee for health insurance plans to try to ensure that their provider networks offer enrollees adequate access to medical care. However, plan‐specific ratios only have an unambiguous interpretation when each provider participates in only one single network. Based on network data, we show that endocrinologists, obstetrician–gynecologists, cardiologists, and pediatricians in California participate on average in 64, 66, 72, and 63 networks, respectively. Such high participation rates in networks make provider‐per‐enrollee ratios measured at the plan level meaningless as metrics for access. We recommend that plan‐specific ratios be abandoned in favor of a more qualitative approach with strong dispute resolution protections as well as “police patrols” (e.g., regulator surveys to assess waiting times for appointments) and “fire alarms” (e.g., investing resources in consumer advocate organizations).
Gluodynamics and deconfinement phase transition under rotation from holography
Authors: Chen Xun , Zhang Lin , Li Danning , Hou Defu , Huang Mei 
Published: July 2021

Abstract
We investigate rotating effect on deconfinement phase transition in an Einstein-Maxwell-Dilaton (EMD) model in bottom-up holographic QCD approach. By constructing a rotating black hole, which is supposed to be dual to rotating strongly coupled nuclear matter, we investigate the thermodynamic quantities, including entropy density, pressure, energy density, trace anomaly, sound speed and specific heat for both pure gluon system and two-flavor system under rotation. It is shown that those thermodynamic quantities would be enhanced by large angular velocity. Also, we extract the information of phase transition from those thermodynamic quantities, as well as the order parameter of deconfinement phase transition, i.e. the loop operators. It is shown that, in the T − ω plane, for two-flavor case with small chemical potential, the phase transition is always crossover. The transition temperature decreases slowly with angular velocity and chemical potential. For pure gluon system with zero chemical potential, the phase transition is always first order, while at finite chemical potential a critical end point (CEP) will present in the T − ω plane.
T − W relation and free energy of the Heisenberg chain at a finite temperature
Authors: Lu Pengcheng , Qiao Yi , Cao Junpeng , Yang Wen-Li , Shi Kang jie , Wang Yupeng 
Published: July 2021

Abstract
A new nonlinear integral equation (NLIE) describing the thermodynamics of the Heisenberg spin chain is derived based on the t − W relation of the quantum transfer matrices. The free energy of the system in a magnetic field is thus obtained by solving the NLIE. This method can be generalized to other lattice quantum integrable models. Taking the SU(3)-invariant quantum spin chain as an example, we construct the corre- sponding NLIEs and compute the free energy. The present results coincide exactly with those obtained via other methods previously.
Consequences of chirally enhanced explanations of (g − 2)μ for h → μμ and Z → μμ
Authors: Crivellin Andreas , Hoferichter Martin 
Published: July 2021

Abstract
With the long-standing tension between experiment and Standard-Model (SM) prediction in the anomalous magnetic moment of the muon aμ recently reaffirmed by the Fermilab experiment, the crucial question becomes which other observables could be sensitive to the underlying physics beyond the SM to which aμ may be pointing. While from the effective field theory (EFT) point of view no direct correlations exist, this changes in specific new physics models. In particular, in the case of explanations involving heavy new particles above the electroweak (EW) scale with chiral enhancement, which are preferred to evade exclusion limits from direct searches, correlations with other observables sensitive to EW symmetry breaking are expected. Such scenarios can be classified according to the SU(2)L representations and the hypercharges of the new particles. We match the resulting class of models with heavy new scalars and fermions onto SMEFT and study the resulting correlations with h → μμ and Z → μμ decays, where, via SU(2)L symmetry, the latter process is related to Z → νν and modified W-μ-ν couplings.
Marginal deformations and RG flows for type IIB S-folds
Authors: Arav Igal , Gauntlett Jerome P. , Roberts Matthew M. , Rosen Christopher 
Published: July 2021

Abstract
We construct a continuous one parameter family of AdS4× S1× S5 S-fold solutions of type IIB string theory which have nontrivial SL(2, ℤ) monodromy in the S1 direction. The solutions span a subset of a conformal manifold that contains the known $$ \mathcal{N} $$
N
= 4 S-fold SCFT in d = 3, and generically preserve $$ \mathcal{N} $$
N
= 2 supersymmetry. We also construct RG flows across dimensions, from AdS5× S5, dual to $$ \mathcal{N} $$
N
= 4, d = 4 SYM compactified with a twisted spatial circle, to various AdS4×S1×S5 S-fold solutions, dual to d = 3 SCFTs. We construct additional flows between the AdS5 dual of the Leigh-Strassler SCFT and an $$ \mathcal{N} $$
N
= 2 S-fold as well as RG flows between various S-folds.
Super-soft CP violation
Authors: Valenti Alessandro , Vecchi Luca 
Published: July 2021

Abstract
Solutions of the Strong CP Problem based on the spontaneous breaking of CP must feature a non-generic structure and simultaneously explain a coincidence between a priori unrelated CP-even and CP-odd mass scales. We show that these properties can emerge from gauge invariance and a CP-conserving, but otherwise generic, physics at the Planck scale. In our scenarios no fundamental scalar is introduced beyond the Standard Model Higgs doublet, and CP is broken at naturally small scales by a confining non-abelian dynamics. This approach is remarkably predictive: robustness against uncontrollable UV corrections to the QCD topological angle requires one or more families of vector-like quarks below a few 10’s of TeV, hence potentially accessible at colliders. Because CP violation is communicated to the SM at these super-soft scales, our solution of the Strong CP Problem is not spoiled by the presence of heavy new states motivated by other puzzles in physics beyond the Standard Model. In addition, these models generically predict a dark sector that may lead to interesting cosmological signatures.
N = 4 near-horizon geometries in D = 11 supergravity
Authors: Farotti D. , Gutowski J. 
Published: July 2021

Abstract
Extreme near-horizon geometries in D = 11 supergravity preserving four supersymmetries are classified. It is shown that the Killing spinors fall into three possible orbits, corresponding to pairs of spinors defined on the spatial cross-sections of the horizon which have isotropy groups SU(3), G2, or SU(4). In each case, the conditions on the geometry and the 4-form flux are determined. The integrability conditions obtained from the Killing spinor equations are also investigated.
Changes in γδT Cells in Peripheral Blood of Patients with Ulcerative Colitis Exacerbations
Authors: Gryglewski Andrzej , Richter Piotr , Szczepanik Marian 
Published: July 2021

AbstractThe role of γδT cells in ulcerative colitis (UC) is well confirmed in experimental animals and demonstrated in many clinical observations. Recent investigations have indicated that UC is associated with several forms of immune imbalance, such as an imbalance between effector T cells and regulatory T cells. However, little is known about the cellular aspect of clinical colitis exacerbations. We observed 140 patients with histologically confirmed UC over the course of 8 years. We investigated the percentage of γδT and αβT cells in peripheral blood of patients and also the expression of various surface markers (CD25, CD54, CD62L). Patients were assembled into stable colitis and exacerbated colitis groups. The percentage of γδT and αβT cells was evaluated by Ortho Cytorone Absolute flow cytometer. In patients with exacerbated colitis we observed a decrease of γδT cells in peripheral blood and an increased ratio of αβT/γδT. Additionally, we found that exacerbation results in a significant increase of percentage of γδTCD25, γδTCD54 and γδTCD62L lymphocytes in peripheral blood when compared to patients with stable colitis. Exacerbation of ulcerative colitis results in a decreased percentage of γδT cells in peripheral blood with increase of CD25, CD54 and CD62L expressing γδT cells. This may represent the effect of cell activation and migration, similar to that observed after the surgical trauma. We hope that this observation may help to predict exacerbations in colitis patients.
Subsidence of a metaphyseal-anchored press-fit stem after 4-year follow-up: an EBRA-FCA analysis
Authors: Dammerer Dietmar , Blum Philipp , Putzer David , Krappinger Dietmar , Liebensteiner Michael C. , Nogler Michael , Thaler Martin 
Published: July 2021

Abstract
Purpose
Uncemented stem migration analysis by EBRA-FCA (Einzel-Bild-Roentgen Analyse, Femoral Component Analyse) has been seen to be a good predictive indicator for early implant failure. In this study, we investigated the migration behavior of a cementless metaphyseal-anchored press-fit stem after 4-year follow-up.

Methods
Applying a retrospective study design, we reviewed all consecutive patients who between 2012 and 2017 received a cementless Accolade II press-fit stem at our Department. We reviewed medical histories and performed radiological measurements using EBRA-FCA software. EBRA-FCA measurements and statistical investigations were performed by two independent investigators.

Results
A total of 102 stems in 91 patients (female 60; male 31) fulfilled our inclusion criteria. Mean age at surgery was 66.2 (range 24.3–92.6) years. EBRA migration analysis showed a mean subsidence of 1.4 mm (range 0.0–12.0) at final follow-up. The angle between stem and femur axis was 0.5° (range 0.0°–2.8°) after 48 months. No correlations between gender or Dorr types and subsidence were found (p > 0.05). A body mass index > 30 kg/m2 showed a significant increase in stem subsidence within the first 6 (p = 0.0258) and 12 months (p = 0.0466) postoperative.

Conclusions
Migration pattern of the metaphyseal-anchored stem and a low subsidence rate at final follow-up may predict a good long-term clinical result.

Trial registration
Number: 20181024-1875.
The Chatbot Usability Scale: the Design and Pilot of a Usability Scale for Interaction with AI-Based Conversational Agents
Authors: Borsci Simone , Malizia Alessio , Schmettow Martin , van der Velde Frank , Tariverdiyeva Gunay , Balaji Divyaa , Chamberlain Alan 
Published: July 2021

AbstractStandardised tools to assess a user’s satisfaction with the experience of using chatbots and conversational agents are currently unavailable. This work describes four studies, including a systematic literature review, with an overall sample of 141 participants in the survey (experts and novices), focus group sessions and testing of chatbots to (i) define attributes to assess the quality of interaction with chatbots and (ii) the designing and piloting a new scale to measure satisfaction after the experience with chatbots. Two instruments were developed: (i) A diagnostic tool in the form of a checklist (BOT-Check). This tool is a development of previous works which can be used reliably to check the quality of a chatbots experience in line with commonplace principles. (ii) A 15-item questionnaire (BOT Usability Scale, BUS-15) with estimated reliability between .76 and .87 distributed in five factors. BUS-15 strongly correlates with UMUX-LITE by enabling designers to consider a broader range of aspects usually not considered in satisfaction tools for non-conversational agents, e.g. conversational efficiency and accessibility, quality of the chatbot’s functionality and so on. Despite the convincing psychometric properties, BUS-15 requires further testing and validation. Designers can use it as a tool to assess products, thus building independent databases for future evaluation of its reliability, validity and sensitivity.
The ERACE-PA Global Surveillance Program: Ceftolozane/tazobactam and Ceftazidime/avibactam in vitro Activity against a Global Collection of Carbapenem-resistant Pseudomonas aeruginosa
Authors: Gill Christian M. , Aktaþ Elif , Alfouzan Wadha , Bourassa Lori , Brink Adrian , Burnham Carey-Ann D. , Canton Rafael , Carmeli Yehuda , Falcone Marco , Kiffer Carlos , Marchese Anna , Martinez Octavio , Pournaras Spyros , Satlin Michael , Seifert Harald , Thabit Abrar K. , Thomson Kenneth S. , Villegas Maria Virginia , Nicolau David P. ,   the ERACE-PA Global Study Group
Published: July 2021

AbstractThe cephalosporin-β-lactamase-inhibitor-combinations, ceftolozane/tazobactam and ceftazidime/avibactam, have revolutionized treatment of carbapenem-resistant Pseudomonas aeruginosa (CR-PA). A contemporary assessment of their in vitro potency against a global CR-PA collection and an assessment of carbapenemase diversity are warranted. Isolates determined as CR-PA by the submitting site were collected from 2019–2021 (17 centers in 12 countries) during the ERACE-PA Global Surveillance Program. Broth microdilution MICs were assessed per CLSI standards for ceftolozane/tazobactam, ceftazidime/avibactam, ceftazidime, and cefepime. Phenotypic carbapenemase testing was conducted (modified carbapenem inactivation method (mCIM)). mCIM positive isolates underwent genotypic carbapenemase testing using the CarbaR, the CarbaR NxG, or whole genome sequencing. The MIC50/90 was reported as well as percent susceptible (CLSI and EUCAST interpretation). Of the 807 isolates, 265 (33%) tested carbapenemase-positive phenotypically. Of these, 228 (86%) were genotypically positive for a carbapenemase with the most common being VIM followed by GES. In the entire cohort of CR-PA, ceftolozane/tazobactam and ceftazidime/avibactam had MIC50/90 values of 2/ > 64 and 4/64 mg/L, respectively. Ceftazidime/avibactam was the most active agent with 72% susceptibility per CLSI compared with 63% for ceftolozane/tazobactam. For comparison, 46% of CR-PA were susceptible to ceftazidime and cefepime. Against carbapenemase-negative isolates, 88 and 91% of isolates were susceptible to ceftolozane/tazobactam and ceftazidime/avibactam, respectively. Ceftolozane/tazobactam and ceftazidime/avibactam remained highly active against carbapenem-resistant P. aeruginosa, particularly in the absence of carbapenemases. The contemporary ERACE-PA Global Program cohort with 33% carbapenemase positivity including diverse enzymology will be useful to assess therapeutic options in these clinically challenging organisms with limited therapies.