bluuebunny/crossref_metadata_2025_split huggingface dataset:
A New Colorimetric Platform for Protein Detection Based on Recognition‐Induced Cascade of Polymeric Nanoparticles Disassembly
Authors: Fang Fang , Liu Jin , Li Yushu , Yang Junjiao , Yang Jing 
Published: January 2018

AbstractDespite great progress, it is still of high interest to explore new homogeneous assays for simple, visual, and selective protein detection. Herein, one new colorimetric sensor has been developed for visual detection of protein by using polymeric micelles as a sensing scaffold and the molecular recognition between protein and the ligand on the surface of the polymeric micelles as the driving force to trigger the readout of the detection signal. The polymeric micelles formed via the self‐assembly of the amphiphilic block polymer biotin‐labeled poly(ethylene glycol)‐block‐poly(3‐acryl aminophenylboronic acid) are endowed with colorful feature by incorporation of alizarin red S (ARS) into the hydrophobic core. Based on the response to streptavidin recognition, these micelles are further disintegrated through the competitive binding of α‐cyclodextrin with boronic acid for disassociation of ARS, which achieves orange–yellow to pink–purple transition in 2 h. This work will open the way to develop one new mix‐and‐measure, visual, and homogeneous assay.
Design, Synthesis, and Photophysical Property of Strongly Fluorescent Benzofuran–Ethynylene Copolymer
Authors: Chen Chih‐Hsien , Luo Zi‐Huan , Tan Kaiting 
Published: January 2018

AbstractA novel alternating benzofuran–ethynylene copolymer is designed and synthesized through a series of palladium‐catalyzed reactions, and extremely strong fluorescence is observed. The electronic levels of frontier orbitals are estimated by electrochemical and photophysical measurements for copolymer and corresponding monomers. The extension of π‐electron conjugation is shown after polymerization reaction, in which the energy of highest occupied molecular orbital (HOMO) is increased and that of the lowest unoccupied molecular orbital (LUMO) is decreased, simultaneously. The fluorescence quantum yield of this copolymer is as high as 75%, and time‐resolved fluorescence measurement confirms this intrinsic property. A preliminary optoelectronic device is fabricated to test the potential application of this copolymer as an emitting layer. In comparison with other known dibenzofuran‐based materials, moderate performance is obtained. The incorporation of a benzofuran group combining acetylene moiety in a polymeric skeleton provides a novel choice of highly fluorescent materials.
Core/Shell Polystyrene/Magnetite Hybrid Nanoparticles Fabricated by Pickering Emulsion Polymerization and Their Magnetorheological Response
Authors: Chae Hyun Sik , Piao Shang Hao , Han Wen Jiao , Choi Hyoung Jin 
Published: January 2018

AbstractSoft‐magnetic polystyrene (PS)/Fe3O4 core/shell composite nanoparticles are fabricated by surfactant‐free Pickering emulsion polymerization using Fe3O4 nanoparticles as a solid stabilizer. The morphology of the synthesized PS/Fe3O4 particles consisting of a PS surface coated with Fe3O4 nanoparticles is examined by scanning electron microscopy and transmission electron microscopy. The thermal properties of Fe3O4 and PS/Fe3O4 are examined by thermogravimetric analysis, while the chemical bonding and composition of the nanocomposite are characterized by Fourier transform infrared spectroscopy and X‐ray diffraction. The magnetorheological (MR) properties of the PS/Fe3O4 composite nanoparticles dispersed in silicone oil are analyzed using a rotational rheometer under an external magnetic field. The PS/Fe3O4‐based MR fluids exhibit typical MR properties and a lower density compared to Fe3O4 nanoparticles, indicating the improved dispersion stability of the MR fluid compared to that of the Fe3O4 nanoparticle‐based MR fluid.
Improving parallel imaging by jointly reconstructing multi‐contrast data
Authors: Bilgic Berkin , Kim Tae Hyung , Liao Congyu , Manhard Mary Kate , Wald Lawrence L. , Haldar Justin P. , Setsompop Kawin 
Published: January 2018

PurposeTo develop parallel imaging techniques that simultaneously exploit coil sensitivity encoding, image phase prior information, similarities across multiple images, and complementary k‐space sampling for highly accelerated data acquisition.MethodsWe introduce joint virtual coil (JVC)‐generalized autocalibrating partially parallel acquisitions (GRAPPA) to jointly reconstruct data acquired with different contrast preparations, and show its application in 2D, 3D, and simultaneous multi‐slice (SMS) acquisitions. We extend the joint parallel imaging concept to exploit limited support and smooth phase constraints through Joint (J‐) LORAKS formulation. J‐LORAKS allows joint parallel imaging from limited autocalibration signal region, as well as permitting partial Fourier sampling and calibrationless reconstruction.ResultsWe demonstrate highly accelerated 2D balanced steady‐state free precession with phase cycling, SMS multi‐echo spin echo, 3D multi‐echo magnetization‐prepared rapid gradient echo, and multi‐echo gradient recalled echo acquisitions in vivo. Compared to conventional GRAPPA, proposed joint acquisition/reconstruction techniques provide more than 2‐fold reduction in reconstruction error.ConclusionJVC‐GRAPPA takes advantage of additional spatial encoding from phase information and image similarity, and employs different sampling patterns across acquisitions. J‐LORAKS achieves a more parsimonious low‐rank representation of local k‐space by considering multiple images as additional coils. Both approaches provide dramatic improvement in artifact and noise mitigation over conventional single‐contrast parallel imaging reconstruction. Magn Reson Med 80:619–632, 2018. © 2018 International Society for Magnetic Resonance in Medicine.
Current controversies in prenatal diagnosis 1: All prenatally detected lower urinary tract obstructions should be shunted
Authors: Devlieger Roland , Douglas Wilson R. , Ruano Rodrigo 
Published: January 2018

What's already known about this topic?

LUTO is a rare but life‐threatening condition affecting the fetus and child in which prenatal therapy is currently being offered but remains controversial. A recent RCT comparing this treatment to post‐natal treatment in selected cases failed to come to robust conclusions due to under‐recruitment. So, the controversy persists.
What does this study add?

In this debate, 2 renown experts in the field develop their arguments pro and against shunting for all LUTO cases based on the current literature and a long‐standing clinical experience in the field of fetal therapy.
Modeling diffusion mass transport in multiphase polymer systems for gas barrier applications: A review
Authors: Zid Sarra , Zinet Matthieu , Espuche Eliane 
Published: January 2018

ABSTRACTPolymer nanocomposites offer a great interest as gas barrier materials because of their much‐enhanced properties arising from the nanoparticles shape, size, and spatial arrangement within the matrix. However, optimization and further development of such materials requires fundamental understanding of the influence of the nanocomposite structure on permeating gas diffusion. This step can be greatly facilitated through modeling/simulation strategies able to establish relationships between the material microstructure and the achieved enhancement of barrier properties. This review first presents the analytical models developed to estimate the effective diffusivity in polymer nanocomposites. The predictions of the models are analyzed with respect to experimental data reported in the literature and their ability to describe accurately the nanocomposite transport properties when the microstructure complexity increases is discussed. Then, modeling approaches based on numerical simulation techniques (e.g., the finite element method) that allow simulating the diffusion processes and assessing the effect of filler shape, orientation, dispersion, and spatial arrangement are reviewed and discussed. Finally, the importance of 3D simulation strategies for the understanding and prediction of transport properties in the most complex nanocomposite microstructures is addressed. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2018, 56, 621–638
Reflecting on the use and abuse of scientific data facilitates students’ ethical and epistemological development
Authors: Howitt Susan M. , Wilson Anna N. 
Published: January 2018

AbstractScientists use judgment in deciding what and how much data to present in publications but science degrees rarely address this issue. Instead, scientific knowledge is presented as certain and students have limited opportunities to use their own judgment in the laboratory. A consequence of this may be that students approach science with a moral absolutist mindset, believing that science is about learning facts and scientists have little need to exercise ethical judgments in relation to data. Students may also hold different ethical standards for themselves and professional scientists. We draw on data from a first‐year science module to show that these views can be challenged by encouraging students to reflect on their own behavior and that of famous scientists in situations with varying degrees of professional ethical ambiguity. We provide evidence of significant transitions in students’ thinking, suggesting that reflection on these issues may lead to substantial epistemological and ethical development. By the end of the module, many students had moved from an initial position of certainty to the acceptance of multiple viewpoints or to a more mature understanding of the evidence‐based nature of science, as well as gaining the ability to critique decisions and make ethical judgments.
Distinction and quantification of inorganic sulfur species including thiosulfate by X‐ray fluorescence (WD‐XRF)
Authors: Hennings Stephanie , Pleßow Alexander 
Published: January 2018

Sulfur occurs in a variety of inorganic and organic compounds with oxidation states from −II up to +VI. Differentiation of these species in solid geochemical samples can be challenging because of oxidation processes during sample preparation by acidic digestion. Applying pressed powder pellets and an analysis by wavelength‐dispersive X‐ray fluorescence minimises reactions with oxidants and water.Main subjects of this work were five inorganic sulfur species, sulfide −II, elemental sulfur 0, thiosulfate +II, sulfite +IV, and sulfate +VI, and the determination of their fluorescence energies in the sulfur X‐ray spectra. S Kα1,2 and S Kβ1 can be observed for all species, S Kβ′ satellites only for species with coordinated oxygen. The results are in good agreement with previously published data. Yet none of the 38 investigated papers from the past 90 years reported S Kα1,2 of thiosulfate, which was determined as E = 2,309.12 eV in this work apparently for the first time.Binary mixtures of sulfur species are strongly differing in their ability of being quantitatively differentiated, as a reliable quantification requires a sufficient difference of the respective fluorescence energies. Regression equations for each mixture can be used to calculate the ratio of mass fractions of the investigated species from the evaluated fluorescence energy.If boundary conditions are considered, the presented approaches can be applied for analyses of geochemical samples or quality control of technical products. The main advantage of the described methods is the option of implementation to everyday X‐ray fluorescence lab routine without substantial additional effort.
Contribution to the free vibration problem of a free‐free beam with large end masses
Authors: Šalinić Slaviša , Obradović Aleksandar , Dunjić Momčilo , Sekulić Dragan , Lazarević Željko 
Published: January 2018

AbstractFree vibration of an Euler‐Bernoulli beam with rigid bodies connected to the beam ends by both revolute joints and torsional springs is considered. The mass centers of rigid bodies have both the transverse and the axial eccentricity relative to the neutral axis of the undeformed beam. The coupling of the partial differential equations of axial and bending vibrations of the beam due to boundary conditions is considered. The frequency equation and the mode shape orthogonality condition of the system are derived. In order to illustrate the effect of the transverse and the axial eccentricity on the vibration behavior of the beam, a numerical example is provided.
Direct simulation of thermo‐coupled fatigue failure for metals
Authors: Zhan Lin , Wang Si‐Yu , Xi Hui‐Feng , Xiao Heng 
Published: January 2018

AbstractA new finite strain elastoplastic flow model with thermo‐coupled effects is proposed for the purpose of simulating cyclic and non‐cyclic thermo‐coupled fatigue failure behavior of metals. Novelties in four respects are incorporated in the proposed model: (i) the usual notion of yielding is rendered irrelevant with a smooth transition from the elastic to the plastic state; (ii) the thermodynamic consistency stipulated by the second law is identically ensured; (iii) asymptotic loss of the strength in cyclic and non‐cyclic thermomechanical processes is incorporated as inherent constitutive features; and, accordingly, (iv) the fatigue failure behavior may be derived as direct consequences of the proposed model, without involving any additional failure criteria and any additional variables. Thermo‐coupled responses of a metal bar with two fixed ends under cyclic heating and cooling over various temperature ranges are studied based on a simple case of the proposed model. Results are obtained for the maximum tensile and compressive stresses changing with the cycle number and, in particular, for the thermal fatigue life versus the temperature amplitude. Model predictions compare well with test data.
Do Wages Lead Inflation? Swiss Evidence
Authors: Zanetti Attilio 
Published: January 2018

SummaryWe construct a quarterly time series for nominal hourly wages and unit labour costs from 1975 onwards and investigate the empirical link between wages and CPI inflation in Switzerland in order to identify causality effects and assess the relevance of wages as an indicator for short-run price changes. We find evidence that prices systematically influence wages whereas the influence of wages on prices is much more sensitive to the choice of the sample period. In particular, the explanatory power of wages disappears in a low inflation environment. These findings move in the same direction as most evidence obtained with US data.
Sustainability of Swiss Fiscal Policy
Authors: Kirchgässner Gebhard , Prohl Silika 
Published: January 2018

SummaryWe examine whether Swiss federal fiscal policy was sustainable over the period from 1900 to 2002. We perform unit root and cointegration tests for federal revenues and expenditures, taking into account a structural shift in the budgetary process related to World War II. We find sustainability considering the entire period. However, splitting the sample into two sub-samples before and after World War II, the results do much less support sustainability.
Personality, Job Satisfaction and Health — The Mediating Influence of Affectivity
Authors: Fischer Justina A. V. , Sousa-Poza Alfonso 
Published: January 2018

SummaryThis paper evaluates the relationship between job satisfaction and subjective and objective measures of health of workers over 50 using the Swiss Household Panel (SHP) and cross-sectional data from the Survey on Health, Ageing and Retirement in Europe (SHARE). Methodologically, we address problems of (a) cross-sectional causality and (b) absence of objective measures of physical health and intellectual ability. We find a positive link between job satisfaction and various self-report health measures and intellectual ability, but not for physical health. Further analysis with the SHP indicates that job satisfaction serves as transmission channel of working conditions, prior health state and affective mental state for most self-report measures, while for specific health problems such as depressive states and problems with the back a direct beneficial effect of job satisfaction remains.
Constant-Quality House Price Indexes for Switzerland
Authors: Bourassa Steven C. , Hoesli Martin , Scognamiglio Donato , Sormani Philippe 
Published: January 2018

Summary
The measurement of house price movements is a vital topic from both academic and practical perspectives and hence has been the focus of much research. There is almost unanimous consensus in the literature that house price indexes should control for the quality of properties; the most widely used methods to attain this aim are the hedonic and repeat sales approaches. The objective of this paper is to compare the Swiss house prices indexes published by the Swiss National Bank (SNB), which are constructed using medians of list prices as published in newspapers and on the internet, to hedonic indexes based on sale prices for the period 1985 to 2006. We find that the list price indexes exhibit quite a different price path than the hedonic indexes during the period. In particular, they appear to overstate price changes in housing markets. We attribute this, at least in part, to changes over time in the composition of the sample of properties on the market.
Spatial Estimation of the Impact of Airport Noise on Residential Housing Prices
Authors: Salvi Marco 
Published: January 2018

Summary
The paper applies spatial econometric techniques to measure the impact of airport noise on the price of single-family homes in the Zurich Airport area. We exploit a large database of geo-referenced noise measurements to investigate the reaction of prices to different noise metrics. The particular institutional setting of Zurich Airport, with changing patterns of runways configurations allows to distinguish the impact of noise at different times of the day. The use of neighborhood fixed-effects is compared to the results given by a costlier modelling strategy involving a rich set of location descriptors. The paper documents the impact of airport noise on housing prices. In the base model specification the Noise Discount Index is 0.97% with typical discounts in the range of −2% to −8%. Accounting for the spatiality of the data has little effect on the results.
Do Foreigners Pay Higher Rents for the Same Quality of Housing in Geneva and Zurich?
Authors: Baranzini Andrea , Schaerer Caroline , Ramirez José V. , Thalmann Philippe 
Published: January 2018

Summary
The Geneva and Zurich housing markets are characterised by high proportions of foreigners and a large share of rental housing. This provides ideal conditions for testing whether foreigners pay more for the same quality of housing than Swiss households and whether flats in neighbourhoods with higher proportions of foreigners rent at a discount. Hedonic price equations using a rich dataset on dwellings and their occupants yield evidence of such discrimination and prejudice. They also suggest more complex relationships between tenant nationality, housing and neighbourhood quality, and rents.
Interest rate setting on the Swiss Franc repo market
Authors: Kraenzlin Sébastien 
Published: January 2018

Summary
Repurchase agreements (repos) are secured money market transactions. The cash taker provides collateral in the form of securities and in return receives money from the cash provider. To ensure the continuous covering of the cash amount, the definition of eligible collateral, its handling and valuation play an important role. This is mainly because the collateral nearly eliminates credit risk. In Switzerland, Swiss franc repos are almost exclusively conducted via the highly standardized repo platform, with four different pre-defined collateral baskets. Each basket comprises different security categories, such as government bonds or covered bonds. This paper analyzes the interest rate setting on the repo market with data from June 1999 to June 2005. It evaluates if the securities provided as collateral influenced the repo rate or not. A price differentiation with respect to the collateral provided is found.
Indeterminacy, causality, and the foundations of monetary policy analysis
Authors: McCallum Bennett T. 
Published: January 2018

Summary
To be useful as a guide to behavior, a model that includes a relationship between x

t
and z

t+1 must specify whether x

t
is influenced by the expectation at t of z

t+1 or, that z

t+1 is inertially influenced by x

t
. We show that, for a broad class of linear RE models, distinct causal specifications will be uniquely associated with distinct solutions. Alternatively, a solution refinement requiring continuity of solution coefficients with respect to basic parameters implies this same solution. For a given structure there is only one RE solution that is fully consistent with the model’s specification.
International price differences in ski lift tickets
Authors: Falk Martin 
Published: January 2018

Summary
This paper provides empirical evidence on international price differences in ski lift tickets based on 214 ski areas in Austria, France, and Switzerland for the winter season 2010/2011. We find that French and Austrian one-day lift tickets (net of VAT) are an average of 17 and 7 per cent lower, respectively, than Swiss ticket prices after controlling for ski areas’ characteristics. The results of quantile regressions show that the magnitude of the international price differences is quite similar for low- and high-priced ski areas. Furthermore, price differences across countries do not increase with distance to the nearest border ski area.
Household money demand: The euro area case
Authors: Seitz Franz , von Landesberger Julian 
Published: January 2018

SummaryIn this paper we analyse household holdings of the broad monetary aggregate M3 in the euro area from 1991 until 2010. We develop a nominal model with satisfactory economic and statistical properties. The main determinants are a transactions variable, wealth considerations, opportunity costs and uncertainty. The model is robust to different samples considered and a multitude of mis-specification tests. The exercise also provides insights that go beyond the portfolio allocation decision of households. According to our analysis, it is quite apparent that in equilibrium, households jointly determine consumption and broad money holdings both influenced by wealth as well as interest rates.
How migrant networks facilitate trade: Evidence from Swiss exports
Authors: Vézina Pierre-Louis 
Published: January 2018

Summary
This paper uses Swiss immigration data and two novel instrumental variables to test the channels through which migrants promote trade. Using the immigrant stock in France as well as Swiss visa restrictions as instruments for the immigrant stock in Switzerland, I am able to exploit the cross-sectional nature of the data and identify a causal protrade effect. I find robust evidence of a protrade effect that takes place entirely on the extensive margin, i.e. on the number of exported products rather than the value of exports. This suggests migrant networks reduce beachhead costs. I also find that migrants can act as substitute for formal institutions, but not so for goods sold on organised markets. This suggests either that differentiated products are not only search- but also trust-intensive or that migrants substitute for institutions by providing information rather than trust.