bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Power to Improve: Effects of Multilingualism and Perceived Proficiency on Enjoyment and Anxiety in Foreign Language Learning
Authors: Botes E’Louise , Dewaele Jean-Marc , Greiff Samuel 
Published: September 2020

AbstractThe study examines whether already knowing several languages and feeling proficient in a new foreign language (FL) has an effect on positive and negative emotions during the learning. The emergence of positive psychology in language acquisition studies has led to the examination of positive emotions in the FL learning process, such as Foreign Language Enjoyment (FLE). FLE is a positive emotional state where psychological needs are met and was introduced as the positive emotion counterpart to the oft studied negative emotion, Foreign Language Anxiety (FLA). A international sample of 1622 FL learners were analysed utilising multivariate tests of variance, examining the level of multilingualism and the level of self-perceived FL proficiency as independent variables, with FLE and FLA as dependent variables. Results indicated a very small, but statistically significant interaction effect between the level of multilingualism and self-perceived FL proficiency on the FLA of the language learner, but not on FLE. In addition, higher levels of multilingualism were associated with higher levels of enjoyment and lower levels of anxiety in FL learners. In turn, more self-perceived proficient FL learners indicated higher levels of enjoyment and lower levels of anxiety. Although effect sizes were in some cases very small, the results do indicate the benefits multilinguals and higher proficiency FL learners have when learning a FL.
Video-Aktivismus: Formen und Strategien der audiovisuellen Mobilisierung im Netz
Authors: Fahlenbrach Kathrin 
Published: September 2020

Zusammenfassung
Ausgehend von Bedingungen des Online-Aktivismus unterscheidet der Artikel zentrale Typen aktivistischer Videos: informative-, dokumentarische- und expressive Aktivistenvideos. Diese werden nach übergreifenden Funktionen der Mobilisierung sowie nach ihren rhetorischen Strategien und ästhetischen Erscheinungsweisen unterschieden, wie sie in den Praktiken unterschiedlicher Bewegungen im Web 2.0 zu beobachten sind.
Neue Wahrheiten von rechts außen?Alternative Nachrichten und der „Rechtspopulismus“ in Deutschland
Authors: Weisskircher Manès 
Published: September 2020

ZusammenfassungPolitische Akteur*innen sind lebhafte Produzent*innen von medialen Produkten und stellen sie dabei oft als Alternative zu etablierten traditionellen Medien dar. Seit geraumer Zeit stehen dabei nicht mehr linke Projekte, sondern „alternative Nachrichten“ von rechts außen im Zentrum der Debatte. Dieser Artikel analysiert mit PI News eine der populärsten dieser Plattformen in Deutschland. Untersucht wird die Entwicklung ihrer Popularität und ihre Klassifizierung als rechts außen auf Basis des ideologischen Schwerpunkts und der Vernetzung mit weiteren Rechtsaußen-Akteur*innen. Ebenso prüft diese Studie inwiefern oftmals vernachlässigte Entwicklungen der zeitgenössischen Rechtsaußen-Politik eine Rolle in der Berichterstattung spielen: die Identifikation mit einer europäischen Identität, die Bezugnahme auf gesellschaftspolitisch liberale Werte und der Aufstieg des Umwelt-Themas. Dabei wird die Bedeutung alternativer Medien für den zeitgenössischen „Rechtspopulismus“ kritisch reflektiert.
Application of three-phase partitioning to the purification and characterization of polyphenol oxidase from antioxidant rosemary (Rosmarinus officinalis L.)
Authors: Yuzugullu Karakus Yonca , Kahveci Busra , Acemi Arda , Kocak Gulden 
Published: September 2020

Abstract
Polyphenol oxidase (PPO) has been purified from the rosemary plant (Rosmarinus officinalis L.) through three-phase partitioning (TPP) and has been biochemically characterized. The optimized TPP consisted of 50% (w/v) ammonium sulfate and equal volumes of crude extract and tert-butanol prepared at pH 6.5 and room temperature. Using this system, PPO was purified 14-fold, with 230% recovery of activity from the middle phase. The partitioned enzyme had a molecular mass of 53 kDa. The highest enzyme activity was detected at 30 °C and pH 7.0 against catechol. In substrate specificity tests, the enzyme displayed activity towards catechol, 4-methylcatechol, caffeic acid, hydroquinone, 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS), pyrogallol, syringaldezine, and 3,4-dihydroxy-L-phenylalanine but no activity towards L-tyrosine. The enzyme was inhibited by the common PPO inhibitors; salicylhydroxamic acid (SHAM), cetyltrimethylammonium bromide (CTAB), polyvinylpyrrolidone (PVP), and the organic solvent dimethyl sulfoxide (DMSO). Enzyme activity increased in the presence of the organic solvents acetone, ethanol, and methanol.
Solving a 1-D inverse medium scattering problem using a new multi-frequency globally strictly convex objective functional
Authors: Thành Nguyen T. , Klibanov Michael V. 
Published: September 2020

Abstract
We propose a new approach to constructing globally strictly convex objective
functional in a 1-D inverse medium scattering problem using multi-frequency
backscattering data. The global convexity of the proposed objective functional is proved. We also prove the global
convergence of the gradient projection algorithm and derive an error
estimate. Numerical examples are presented to illustrate the performance of the proposed algorithm.
Modeling House Price Synchronization across the U.S. States and their Time-Varying Macroeconomic Linkages
Authors: Marfatia Hardik A. 
Published: September 2020

AbstractThis paper analyzes the time-varying impact of macroeconomic forces on the synchronization in housing movements across all the U.S. states. Using a Bayesian modeling approach, the house price movements are decomposed into national, regional and state-specific factors. We then analyze the time-varying impact of macroeconomic forces on these national and regional factors. Evidence suggests that in several Western and Eastern states the house price variations are dominated by the national factor, whereas the regional factor dominates the Southern and Midwestern markets. These factors are found to have a time-varying relationship with most macroeconomic indicators with particularly pronounced time-variation caused by national house prices, inflation rate and consumer sentiments.
Leucism and updated geographic distribution of Molossus nigricans Miller, 1902 (Chiroptera: Molossidae) in Honduras
Authors: Gómez-Corea Wilson , Hernández Jonathan , Antúnez-Fonseca Cristopher , Mejía-Quintanilla David , Vega Hermes 
Published: September 2020

Abstract
We present the first record of leucism of Molossus nigricans a chromatic disorder rarely documented in mammals of Honduras, as well as species’ biological and ecological information. In addition, we present the currently known distribution and altitudinal range of M. nigricans in Honduras, based on acoustic records, opportunistic findings and previous records. We confirm the presence of M. nigricans in sixteen departments of which four are new departmental records.
Crystal structure of poly[triaqua-(di(2,2′-bipyridine-κ2
N,N′)-μ4-silanetetrayltetrakis(benzene-4,1-diyl)tetrakis (hydrogen phosphonato)-κ4
O:O′:O′′:O′′′) dicadmium(II)], C44H42N4O15P4Cd2Si
Authors: Wang Baogang , Man Xiaxia 
Published: September 2020

Abstract
C44H42N4O15P4Cd2Si, triclinic, P1̄ (no. 2), a = 13.4778(9) Å, b = 14.2036(9) Å, c = 15.2206(10) Å, α = 69.637(1)°, β = 72.355(1)°, γ = 64.861(1)°, V = 2431.1(3) Å3, Z = 2, R
gt(F) = 0.0428, wR
ref(F
2) = 0.0987, T = 120(2) K.
Performance of rice paddy varieties under various organic soil fertility strategies
Authors: Setiawati Mieke Rochimi , Prayoga Muhamad Khais , Stöber Silke , Adinata Kustiwa , Simarmata Tualar 
Published: September 2020

Abstract
It has been widely known that integrating and adopting sustainable agricultural practices can restore and maintain the health of degraded agricultural land and adapt to climate change. Azolla pinnata and Sesbania rostrata are local potential plants in paddy fields that can be used as green manures. Two paddy varieties were planted. The experiment was conducted as factorial randomized block design, consisting of green manure types (p1 = goat manure 10 t/ha, p2 = goat manure 10 t/ha + Azolla 10 t/ha, p3 = goat manure 10 t/ha + Sesbania 2 t/h, and p4 = goat manure 10 t/ha + Azolla 5 t/ha + Sesbania 1 t/ha) and rice varieties (v1 = Bangir and v2 = Inpari 41). The results indicated that the use of green manure has increased the nitrogen and organic carbon contents in the soil from 0.10% and 0.82% to more than 0.20% and 2.0%, respectively. Inpari 41 variety produced higher grain yield (4.92 t/ha) compared to Bangir variety (3.48 t/ha). These findings indicate that the suitable green manure combined with paddy varieties can improve the resilience of soil health and paddy productivity.
Hitler’s Downfall and the Collapse of the Thousand Years Reich: Multi Fronts and Incapable Allies
Authors: Baig Muhammad Ali 
Published: September 2020

AbstractThe downfall of Adolf Hitler was a significant development in the history of the world. His armies conquered almost all of Europe in a dramatic span of time by the employment of Blitzkrieg tactics. Before the outbreak of the Second World War, Hitler assisted General Franco in the Spanish Civil War. Later, while still fighting on the Western front, Hitler ordered the Afrika Korps to assist Italians in Northern Africa and in the Balkans region and finally launched Operation Barbarossa by invading the Soviet Union. The Anti-Comintern Pact, Pact of Steel and Tripartite Pact brought the Third Reich, the Empire of Japan and the Kingdom of Italy onto one page. This paper attempts to probe the multiple fronts and the efficacy of Hitler’s allies including Japan, Italy, Romania, Hungary, Slovakia, Bulgaria, Yugoslavia and Croatia and to try and find the causes behind the downfall of one of the strongest men the world has ever seen from a theoretical perspective. This research did not intend to glorify Hitler or Nazism, but focuses on how the maximization of power and the states’ actions with hegemonic aspirations triggered a balancing coalition and ultimately resulted in punishment from the system itself.
Thermosoluted Marangoni convective flow towards a permeable Riga surface
Authors: Shafiq Anum , Rasool Ghulam , Phali Lehlohonolo , Khalique Chaudry Masood 
Published: September 2020

AbstractThis study reveals the characteristics of chemical reaction on Marangoni mixed convective stream towards a penetrable Riga surface. The heat and mass phenomena are analysed within the sight of Dufour and Soret impacts. The administering partial differential equations system is converted into three nonlinear ordinary differential equations utilizing appropriately adjusted transformations. The resultant system of highly nonlinear equations is analytically solved by invoking the homotopy analysis method. Thereafter, the convergence of series solutions is discussed. The impact of appropriate parameters on various flow fields is thoroughly explained with the help of graphs and tables. The wall drag coefficient and relevant flux rates are arranged and discussed for dimensionless parameters. The outcomes show that the stronger Dufour effect of liquid causes a notable incremental variation in heat and mass flux, whereas an opposite trend is noted in the heat flux rate for the Soret effect. However, the mass flux is still found increasing for the stronger Soret effect.
Robust parameter search for IC tray injection molding using regrind resin
Authors: Huang Ming-Shyan , Nian Shih-Chih 
Published: September 2020

Abstract
Quality consistency is essential in maximizing the productivity rate of the injection molding process and minimizing the production cost. The quality consistency problem is particularly acute in the case of injection molding processes performed using regrind resin, for which the rheological properties are less uniform and more unpredictable than those of virgin material. Accordingly, the present study proposes a two-stage approach for optimizing the injection molding process parameters in such a way as to achieve a consistent molding quality over repeated injection molding cycles. In the first stage, the values of the injection speed/pressure, velocity-to-pressure (V/P) switchover point, and packing pressure are individually determined based on an inspection of the cavity pressure profile and machine parameters provided by the injection molding machine controller. In the second stage, a robust parametric search method based on a first-order regression model is employed to determine the optimal combination of the process parameter settings. Using an Integrated Circuit (IC) tray fabricated from regrind resin for illustration purposes, the results confirm that the proposed method overcomes the problem of small variations in the melt quality and therefore provides an effective technique for improving the yield rate and quality of the continuous mass production.
Advancements in proton exchange membranes for high-performance high-temperature proton exchange membrane fuel cells (HT-PEMFC)
Authors: Li Guoqiang , Kujawski Wojciech , Rynkowska Edyta 
Published: September 2020

Abstract
The high-temperature proton exchange membrane fuel cell (HT-PEMFC) offers several advantages, such as high proton conductivity, high CO tolerance, good chemical/thermal stability, good mechanical properties, and low cost. The proton exchange membrane (PEM) is the critical component of HT-PEMFC. This work discusses the methods of current PEMs development for HT-PEMFC including modifications of Nafion® membranes and the advancement in composite PEMs based on non-fluorinated polymers. The modified Nafion®-based membranes can be used at temperatures up to 140 °C. Nevertheless, the application of Nafion®-based membranes is limited by their humidification with water molecules acting as proton carriers and, thus, by the operation conditions of membranes under a relative humidity below 20%. To obtain PEMs applied at higher temperatures under non-humidified conditions, phosphoric acid (PA) or ionic liquids (ILs) are used as proton carriers in PEMs based on non-fluorinated polymers. The research discussed in this work provides the approaches to improving the physicochemical properties and performance fuel cell of PEMs. The effects of polymer blending, crosslinking, and the incorporation of inorganic particles on the membrane properties and fuel cell performance have been scrutinized. The incorporation of inorganic particles modified with ILs might be an effective approach to designing high-performance PEMs for HT-PEMFC.
Progress and perspectives for the use of pillared clays as adsorbents for organic compounds in aqueous solution
Authors: Cardona Yaneth , Vicente Miguel Angel , Korili Sophia A. , Gil Antonio 
Published: September 2020

Abstract
The world is faced with several problems as regards water pollution. This is due to several factors, including the discharge of effluents into the environment with no prior treatment. This wastewater, therefore, contains significant levels of pollutants, including numerous toxic organic contaminants and others that are similarly undesirable. Several studies have attempted to find ways of removing wastewater contaminants using pillared interlayered clays (PILC) as adsorbents. In this work, we present a summary of those studies that have used PILC as adsorbents for the removal of organic compounds from aqueous solutions while simultaneously illustrating their potential for this purpose. A general overview is provided so that the reader can acquire a basic understanding of the PILC and their modified counterparts that have been used, and some of the characteristics that can directly affect their adsorption behavior, especially their textural and surface properties.
The Development of a Regression Model to Predict Object Transfer Power in Older Adults
Authors: Castillo Diana C. , Strand Keri L. , Oh Jeonghoon , Eltoukhy Moataz , Totillo Matthew C. , Signorile Joseph F. 
Published: September 2020

Abstract
Castillo, DC, Strand, KL, Oh, J, Eltoukhy, M, Totillo, MC, and Signorile, JF. The development of a regression model to predict object transfer power in older adults. J Strength Cond Res 34(11): 3086–3093, 2020—Declines in mechanical power affect independence in older adults; however, no practical clinical method exists to assess peak power (PP) and average power (AP) during transfer tasks in this population. Therefore, predictive models were developed and validated during performance of an existing transfer assessment, the gallon-jug shelf-transfer (GJST) test. Twenty-one independent-living older women (age = 74.8 ± 5.6) and men (age = 73.8 ± 4.5) participated in the development phase. Peak power and AP were computed using data from three-dimensional movement analyses while subjects moved five 1-gallon jugs from a low (0.59 m) to high shelf (1.43 m) as quickly as possible. Stepwise linear regression models using test duration, subject height, and age produced equations with high R
2 values for PP (0.655–0.701; p < 0.0001) and AP (0.703–0.759; p < 0.0001). However, regression and Bland-Altman analyses showed models with declining agreement as power values increased. Therefore, analyses were repeated using a quadratic model, showing stronger predictive capacity (PP: R
2 = 0.786; AP: R
2 = 0.878; p < 0.0001). Validity of this model was evaluated in a second sample of 30 older women (age = 69.9 ± 4.7) and men (age = 70.7 ± 4.3). Computed GJST AP and PP were compared with power produced during dominant arm chest press and distance during the seated medicine ball throw. Generalizability of these models was also confirmed through cross-validation analyses. Our results indicate mechanical power in older adults can be accurately measured using the quadratic model, with test duration as the independent variable. This model provides a simple, safe, and inexpensive assessment tool that can be administered by clinicians to improve diagnostic and therapeutic processes in older persons.
Subsize Specimens for Crack-Arrest Testing
Authors: Marschall C. W. , Mincer P. N. , Rosenfield A. R. 
Published: September 2020

Crack-arrest tests on A533 Type B steel compact specimens, as small as 100 mm square by 6.4 mm thick, yielded results that agreed with those reported for 200-mm-square by SO-mm-thick specimens of the same steel. The specimens were trans-verse-wedge loaded and contained both a brittle crack-starter weld and side grooves, as recommended on the basis of results obtained in the ASTM Cooperative Program on Crack Arrest Testing.Preliminary experiments revealed that the load-line displacement measured at the onset of rapid fracture frequently contained a significant plastic component that, if included in the linear-elastic fracture mechanics (LEFM) computation of K, yielded nonconservative toughness values. An incremental load-cycling technique was used to minimize the effect of plastic displacement prior to crack initiation. Following unloading after a given cycle, the specimen was reloaded until the load-point displacement exceeded that of the prior cycle by 5 percent. This procedure was continued until rapid fracture was initiated. Because of strain hardening, the displacement reached during the crack-initiation cycle was almost entirely elastic and could be used to calculate toughness by LEFM with little error. Use of subsize crack-arrest specimens in combination with incremental load cycling is particularly attractive for studying radiation effects in pressure-vessel steels, because of space limitations in reactors.
Controlled Flaw Preparations for Heavy-Section Steel Fracture Mechanics Testing
Authors: Holz P. P. 
Published: September 2020

Representative field testing to determine data for potential flaw propagation, fracture behavior, and margin against fracture for high-pressure-, high-temperature-service steel vessels subjected to increasing pressurization or thermal shock or both is premised on the investigator's ability to grow representative sharp cracks of known size, location, and orientation. Gaging for analytical stress and strain procedures and ultrasonic and acoustic emission instrumentation then can be applied to monitor the vessel during testing and to study crack growth.
Cracks were grown by two techniques: (1) a mechanical method within a premachined notch was sharpened by pressurization, and (2) a method combining electron beam welds and hydrogen charging to crack the chill zone of a rapidly placed autogenous weld. The mechanical method produces a naturally occurring growth shape controlled primarily by the shape of the machined notch; the welding-electrochemical method produces flaws of uniform depth from the surface of a wall or machined notch. Theories, details, discussions, and procedures are covered for both flaw-growing schemes.
Influence of Microstructure on the Ductile Rupture Mechanisms of a 316L Steel at Room and Elevated Temperatures
Authors: Balladon P. , Heritier J. , Rabbe P. 
Published: September 2020

Fracture toughness and ductile crack growth properties of 316L stainless steel at room temperature and at 550°C are determined using the J-integral concept. Two plates of 316L stainless steel containing, due to their different melting processes, different amounts and sizes of inclusions are characterized in terms of JIc and slopes of the J-R curves. The variations of these properties with the inclusion content and size, the proportion of second phases (carbides, δ ferrite, σ phase), and the position of the crack propagation plane with respect to the rolling direction are studied. Tension and impact tests carried out in the same conditions are used to compare the different toughness criteria.
The results obtained show thatl1c and JIc and dJ/da levels are very sensitive to inclusion content and shape and to the presence of transgranular carbides and a phase. Small amounts of li ferrite and intergranular carbides seem to have little influence. JIc and dJ/da criteria are more sensitive to the presence of inclusions or second phase than the Charpy V-notch criterion. The choice of the blunting line equation used to determine JIc values is discussed in terms of crack-opening displacement measurements during crack-tip blunting.
An approach is made to determine the influence of specimen size on the results obtained in JIc tests for an austenitic stainless steel.
Pola Penggunaan Balanced Scorcard (BSC) Pada Indikator Kinerja Utama (IKU) Universitas Islam Negeri (UIN) Syarif Hidayatullah Jakarta
Authors: Fitriadi Fitriadi 
Published: September 2020

The research problems about phenomena of the difficulty in seeing performance achievements and performance measurements at State Islamic University (UIN) Syarif Hidayatullah Jakarta. The UIN Syarif Hidayatullah Jakarta has difficulty making decisions in performance management, because before using the KPI, Its used budget management in performance appraisal and measurement. This research uses a qualitative method of field study with a phenomenological approach. Research objects are the experiences of the use of the Balanced Scorecard (BSC) pattern on the KPI of the UIN Syarif Hidayatullah Jakarta in 2018. After its existence of the Main KPI using the BSC. The results of the KPI are taken into consideration for performance evaluation by stakeholders at UIN Syarif Hidayatullah Jakarta in achieving the organization's vision. This performance appraisal and performance measurement can serve as a reference for performance achievements for Higher Education Rankings at the national and international level, Government Institution Performance Accountability Report (LAKIP), Strategic Plan (Renstra) and Campus Development Master Plan (RIBKA) or Milestones by looking at indicators, targets and size of the report. Keywords: Key Performance Indicators (KPI), Key Performance Indicators (KPI), Balanced Scorecard (BSC), Performance Measurement, Cascade