Miracle-dz/UniFAR-FTUs huggingface dataset:
Synthesis of Polyamine Grafted Chitosan Copolymer and Evaluation of Its Corrosion Inhibition Performance

Two new chitosan derivatives, polyamine grafted chitosan copolymers have been synthesized for corrosion protection of carbon steel in acidic medium. First, methyl acrylate graft chitosan copolymer (CS-MAA) was prepared by the reaction of chitosan (CS) and methyl acrylate (MAA) via the Michael addition reaction. Then, CS-MAA was reacted with ethylene diamine (EN) and triethylene tetramine (TN) respectively to synthesize ethylene diamine grafted chitosan copolymer (CS-MAA-EN) and triethylene tetramine grafted chitosan copolymer (CS-MAA-TN), and the structures were characterized by Fourier-transform infrared spectroscopy (FT-IR). At last, the corrosion inhibition activities on Q235 carbon steel were investi- gated by using gravimetric measurements, metallographic microscope, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The compounds CS-MAA-EN and CS-MAA-TN show an appreciable corrosion inhibition property against corrosion of Q235 carbon steel in 5% HCl solution at 25 o C. It has been observed that CS-MAA- EN shows greater corrosion inhibition efficiency than CS-MAA-TN. The inhibition efficiency of CS-MAA-EN was close to 90% when the mass fraction concentration was 0.2%~0.3%; the inhibition efficiency of CS-MAA-TN was close to 85% when the mass fraction concentration was 0.02%. The present work provided very promising results in the preparation of green cor- rosion inhibitors.
Coriolis interaction in quadrupole-octupole deformed nuclei

Based on a recent application of the collective model of coherent quadrupole–octupole oscillations and rotations in odd-mass nuclei we develop an algorithm for a microscopic calculation of the Coriolis interaction strength. It is realized by using the reflection asymmetric deformed shell model. The single-particle (s.p.) wavefunction is obtained in the basis of the axially deformed harmonic oscillator (ADHO). The Coriolis interaction strength is calculated after transforming the ADHO decomposition coefficients of the wavefunction into coefficients in the basis of the spherical harmonic oscillator (SHO). The transformation brackets relating the ADHO and SHO basis functions are numerically integrated. Calculations were implemented for several nuclei in which the parity doublet spectra are known or supposed to be built on a single-particle orbital with Ω = 1/2. The results show the applicability of this approach to study the effects of Coriolis interaction in nuclei with quadrupole and octupole deformations as well as to examine their s.p. and shape characteristics.
Differences in Performance Attributions , Self ‐ Efficacy , and Achievement in Mathematics : If

Jennifer E. V. Lloyd, John Walsh, & Manizheh Shehni Yailagh In this study, we tested the claim that sex differences in mathematics achievement are related to boys’ and girls’ differing achievement‐related beliefs. We compared the mathematics report card grades, 2001 Foundation Skills Assessment (FSA) Numeracy subtest scores, performance attributions, and self‐efficacy of 161 British Columbian public school students’ (62 fourth‐graders, 99 seventh‐graders). Findings indicated that girls’ mathematics achievement met or exceeded that of boys and that girls’ attribution patterns were more self‐enhancing than those found in previous studies. However, girls were more apt to display under‐confidence relative to their actual mathematics achievement and to attribute mathematics failure to a lack of teachers’ help than were boys.
Long-term Follow-up of MEN1 Patients Who Do Not Have Initial Surgery for Small ≤2 cm Nonfunctioning Pancreatic Neuroendocrine Tumors, an AFCE and GTE Study: Association Francophone de Chirurgie Endocrinienne & Groupe d'Etude des Tumeurs Endocrines

To report long-term follow-up of patients with multiple endocrine neoplasia type 1 (MEN1) and nonfunctioning pancreatic neuroendocrine tumors (NF-PET). TRIPONEZ, Frédéric, et al. Long-term Follow-up of MEN1 Patients Who Do Not Have Initial Surgery for Small ≤2 cm Nonfunctioning Pancreatic Neuroendocrine Tumors, an AFCE and GTE Study: Association Francophone de Chirurgie Endocrinienne & Groupe d'Etude des Tumeurs Endocrines. Annals of Surgery, 2017
Riverine dissolved lithium isotopic signatures in low‐relief central Africa and their link to weathering regimes

The isotopic composition of dissolved lithium (δ7Li) near the Congo River mouth varied from 14‰ to 22‰ in 2010 and was negatively correlated to discharge. From the relationship between dissolved δ7Li and strontium isotopes, we suggest that this large variation is due to mixing of waters from two contrasting continental weathering regimes. One end‐member (high δ7Li ≈ 25‰) represents waters sourced from active lateritic soils covering the periphery of the basin (Li highly sequestered into secondary mineral products) and another representing blackwater rivers (low δ7Li ≈ 5.7‰) derived from the swampy central depression where high organic matter content in water leads to congruent dissolution of the Tertiary sedimentary bedrock. This suggests that the lithium isotopic signature of tropical low‐relief surfaces is not unique and traces the long‐term, large‐scale vertical motions of the continental crust that control geomorphological settings. This evolution should be recorded in the oceanic secular δ7Li curve.
Embedding the Artifact within the Energy Informatics Framework

In this paper we show how IS research can contribute to two major issues many societies face today – dealing with the decreasing availability of easily accessible fossil fuels and the threat of climate change. We introduce an IS artifact that uses historical data on energy consumption, energy generation, and mobility behavior to unleash synergies between residential photovoltaic panels and electric vehicles. Using real world data we show in simulations that our residential information system allows households to decrease annual net energy costs by up to 68 percent. This results in an earlier breakeven point of green technologies and clears a path towards a more sustainable society. Following up with an investment analysis we show that the information system has the same financial impact as the subsidy for plugin-hybrid electric vehicles by the U.S. federal government following the American Recovery and Reinvestment Act – at no cost to the taxpayer.
Research on Anti-Corrosion Performance of Hot-dip Galvanized Coating during Neutral Salt Spray Test

Two customized hot-dip galvanized test specimens were applied onto the steel substrates, then the specimens were tested 5000h during the neutral salt spray and there were obvious differences in the anti-corrosion performance between the coatings. The results showed that there was no significant difference of the corrosion products and corrosion mechanisms between two coatings. Nevertheless, the Hot-dip customized production process, the density of the corrosion products in coating were the primary factors influencing the anti-corrosion performance of the Hot-dip galvanized coating.
Stimulating Thinking at the Design Pitch. Storytelling Approach and Impact

Abstract: The relationship between design and storytelling is a growing field of research, this paper proposes that the next focus within this field should be the relationship between storytelling approaches and their impacts at the design pitch. Determined through a literature review, the following desirable impacts were used to focus conversation during a series of semi-structured interviews conducted with employees from Unilever and Accenture: ‘Delivering Understanding’, ‘Demonstrating Value’, ‘Stimulating Critique’, and ‘Encouraging more Holistic Thinking’. Storytelling approaches and these impacts were discussed in relation to over fifty design pitches. Emergent themes were deciphered through a thematic analysis of the interview transcriptions. The impacts were found to have significant relationships with the following storytelling approaches: ‘Acknowledging Cultural Perspectives and Beliefs’, ‘Diversity/Difference’, ‘Detailing Concept Development’, and ‘Imagery, in particular Analogy’. A summary of these relationships is detailed in a framework entitled: ‘Design Pitch Storytelling: The Impact-Approach Framework’.
Hamburger Forschungsber ichte zur Sozia lpsychologie HAFOS

In this article, two scientific approaches are conjoined: Small group research and evolutionary theory. In the past 50 years, small group researchers have identified various deficits in group performance. Presently, how to improve group interaction is a focal point of their work. Meanwhile, social psychologists are paying more attention to evolutionary theory, and process losses in group performance may be evaluated differently from such a perspective. It appears that proximate performance losses could mean ultimate gains for the individual. A reduction in group performance should therefore be anticipated from a proximate perspective, because it represents an individual selection advantage from the ultimate view. As a means of intervention, group facilitation techniques are the key to proximate gains in group processes.
Teaching and Learning in Medicine: An International Journal

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The Factors Affecting Egypt's Exports: Evidence from the Gravity Model Analysis

This paper investigates the factors that affect Egypt’s bilateral export flows to its main trading partners. Based on the panel data, the gravity model approach has been used to estimate Egypt’s exports through annual data covering the period 2000 to 2013 for 42 main trading partners. The gravity model in its fixed effects panel data explained 84 percent of the fluctuations in Egypt’s exports. The results show that Egypt’s GDP, importer’s GDP, importer’s population, regional trade agreements (RTA) and the border between Egypt and its trading partner are the main factors affecting Egypt’s exports to its main trading partners. All these factors affect Egypt’s exports positively. Transportation costs (distance variable) are found to have negative but insignificant effect on Egypt’s exports. All these results can help the government and policy makers to undertake appropriate measures to improve the performance of the Egyptian foreign trade sector.
Biomass estimation equations for tropical deciduous and evergreen forests

In this study, linear and non-linear regression equations were developed to estimate biomass of tropical forests along with estimates of goodness of fit and percentage of errors. Basal area, average height of trees and tree density data from published reports, were used to develop equations to estimate biomass of deciduous and evergreen forests. Basal area and height of trees are found to give high goodness of fit and low percentage of errors for deciduous forests. Generally, the coefficient of determination (r²) was low for evergreen forests, probably due to the presence of trees of different height in different canopies that may have different growth rates. The coefficient of determination was high and estimate of error was low for deciduous forests. Thus, the biomass estimate equations for deciduous forests are precise and therefore useful for field applications.
AFFECT REGULATION AND DECISION MAKING IN HEALTH-CARE PROFFESIONALS: TYPOLOGY APPROACH

The aim of the study was to investigate the relationship between affect regulation styles and decision making in health-care professionals. The authors suppose that emotions and affect regulation are closely connected with decision making in professional situations. 133 health-care professionals participated in the study which employed Melbourne Decision Making Question- naire, Measure of Affect Regulation Styles, Multidimensional Health States Scale and subjective measure of decision making effectiveness. Using cluster analysis, the authors derived a typology of four types based on affect regulation strategies and well-being and ill-being variables. The individual types were compared in regard to decision making styles and decision self-efficacy. The results showed that highest subjective effectiveness and vigilance were found in types with high cognitive and behavioral engagement. Low subjective effectiveness with high hypervigilance, buck-passing and procrastination were found in types with low use of all affect regulation strate- gies, especially when they were connected with higher ill-being.
Temperature Changes in SouthEast Asia:1973-2003

This paper studied the monthly seasonally-adjusted surface temperature patterns in Southeast Asia from 1973 to 2008. The study area comprised 40 regions of 10° by 10° grid-boxes in latitudes 25°S to 25°N and longitudes 75°E to 160°E. The data were fitted with a second-order auto-regressive process to reduce auto-correlations at lags 1 and 2 months. Factor analysis was used to account for spatial correlation between grid-boxes, giving six contiguous layer regions that extended beyond the original study area to form larger regions. Exploration extended from latitudes 35°S to 25°N and longitudes 65°E to 160°E. Multivariate linear regression models were then fitted to data within these larger regions. Temperatures were found to have increased in all regions, with the increases ranging from 0.091 to 0.240°C per decade.
The analysis of hyperspectral broadband coherent anti-Stokes Raman scattering (CARS) microscopic images

Coherent anti-Stokes Raman scattering (CARS) microscopy is a powerful nonlinear optical technique, which allows chemically selective imaging of microscopic samples. In broadband CARS, the application of a spectrally narrow pump and probe beams and a spectrally wide Stokes beam results in multiple Raman transitions occurring simultaneously, generating a broad CARS spectrum with several orders of magnitude higher intensity relative to the spontaneous Raman scattering. This allows generation of three dimensional data sets (one dimensional spectral data for each pixel of a two dimensional image), known as hyperspectral images. Here, the applications of several techniques to hyperspectral CARS image analysis are illustrated. In particular, singular value decomposition (SVD) is shown to be a highly efficient method of distinguishing between various components of a polymer bead mixture. SVD performance is demonstrated to be superior to the better-known k-means clustering analysis.
EXPLOITING THE INFORMATION OF STOCK MARKET TO FORECAST EXCHANGE RATE MOVEMENTS

The present study examines dynamic relation between stock index and exchange rate by using the daily data for India. The empirical evidence suggests that there is no long-run relationship; how-ever, there is bidirectional causality between stock index and exchange rates. The findings of the causality tests strongly support portfolio or macroeconomic approach on the relationship between ex-change rates and stock prices. An attempt is also made to forecast daily returns of INR/USD exchange rates by exploiting the information of causal relationship between exchange rates and stock index us-ing Vector autoregression (VAR) model. VAR’s out-of-sample performance is benchmarked against the traditional ARIMA model. The potential of the two models are rigorously evaluated by employing a cross-validation scheme and statistical metrics like mean absolute error, root mean square error and directional accuracy. Out-of-sample performance shows that VAR model is robust, and consis-tently produces superior predictions than ARIMA model.
Wolthoff Applications and Interviews : A Structural Analysis of Two-Sided Simultaneous Search Working

A large part of the literature on frictional matching in the labor market assumes bilateral meetings between workers and firms. This ignores the frictions that arise when workers and firms meet in a multilateral way and cannot coordinate their application and hiring decisions. I analyze the magnitude of these frictions. For this purpose, I present an equilibrium search model of the labor market with an endogenous number of contacts between workers and firms. Workers contact firms by applying to vacancies, whereas firms contact applicants by interviewing them. Sending more applications and interviewing more applicants are both costly activities but increase the probability to match. In equilibrium, contract dispersion arises endogenously and workers spread their applications over the different types of contracts. Estimation of the model on the Employment Opportunities Pilot Projects data set provides values for the fundamental parameters of the model, including the cost of an application, the cost of an interview, and the value of non-market time. These estimates are used to determine the loss in social surplus compared to a Walrasian world. Frictions on the worker and the firm side each cause approximately half of the 4.7% loss. There is a potential role for activating labor market policies, because I show that for the estimated parameter values welfare is improved if unemployed workers increase their search intensity. ∗This paper was originally titled Simultaneous Search and Recruitment. I am very grateful to Philipp Kircher for feedback at various stages of this project. I thank Jim Albrecht, Martin Burda, Gabriele Camera, Jason Faberman, Giuseppe Ferrero, Manolis Galenianos, Pieter Gautier, Veronica Guerrieri, Ali Hortacsu, Andrey Launov, Guido Menzio, Dale Mortensen, Jean-Marc Robin, Richard Rogerson, Shouyong Shi, Robert Shimer, and many others for valuable comments. This paper has benefited from presentations at the University of Iowa, the European Meeting of the Econometric Society, the Tinbergen Institute, the Search and Matching Workshop at the Philadelphia FED, the Fifth IZA Conference on Labor Market Policy Evaluation at Georgetown University, Chicago Booth, the University of Chicago, Purdue University, the Stockholm School of Economics, the University of Illinois at Urbana-Champaign, the University of Toronto, Australian National University, the University of Melbourne, the Midwest Economic Theory Meeting, the Workshop on Labour Market Search at the University of Konstanz, the Annual Meeting of the Society of Economic Dynamics, the NBER Summer Institute, Queen’s University and the University of Western Ontario. †E-mail: ronald.p.wolthoff@gmail.com
Quantile Peer Effects of Immigrant Children at Primary Schools

We analyze how the share of immigrant children in the classroom affects the educational performance of native Dutch children in primary schools. Using quantile regressions, our paper studies these peer effects at different parts of the test score distribution of native children. After accounting for selectivity in the allocation of immigrant students across schools, we find no evidence for the existence of negative peer effects of immigrant children, either at the median or at other parts of the distribution.
United States Patent

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The planar algebra of a fixed point subfactor

We consider inclusions of type $(P\otimes A)^G\subset(P\otimes B)^G$, where $G$ is a compact quantum group of Kac type acting on a ${\rm II}_1$ factor $P$, and on a Markov inclusion of finite dimensional $C^*$-algebras $A\subset B$. In the case $[A,B]=0$, which basically covers all known examples, we show that the planar algebra of such a subfactor is of the form $P(A\subset B)^G$, with $G$ acting in some natural sense on the bipartite graph algebra $P(A\subset B)$.