Miracle-dz/UniFAR-FTUs huggingface dataset:
Controlled synthesis of core–shell iron–silica nanoparticles and their magneto-dielectric properties in polymer composites

Low loss core–shell iron–silica nanocomposites with improved magneto-dielectric properties at radio frequencies (1 MHz–1 GHz) were successfully fabricated. A new simple method was developed to synthesize metallic iron (Fe) nanoparticles with uniform size distribution in an aqueous environment at room temperature. Citric acid and oleic acid served as surface-capping agents to control the particle size of the synthesized Fe nanoparticles. Smaller Fe nanoparticles with narrower particle size distribution were obtained as the concentration ratio of iron ions to carboxylic acid groups decreased. The Fe nanoparticles were subsequently coated with silica (SiO2) layers to prevent the iron cores oxidizing. Polymer composites were prepared by incorporating Fe@SiO2 nanoparticles with polydimethylsiloxane (PDMS) elastomers. Experimental results showed that the dielectric permittivity (ε) and magnetic permeability (μ) of the polymer composite increased with increasing amount of Fe@SiO2 nanoparticle doping. The dielectric loss (tanδ) was near 0.020 at a frequency of 1 GHz.
Investigating the Relationship between Organizational Culture and Employees Job Satisfaction

The main purpose of this study is to examine the relationship between the dimensions of organizational culture and employee job satisfaction at Islamic Azad University (IAU) which is located at Iran, region one. The population comprised of all employees of 31 branches of IAU located at region one. Data was collected by structured questionnaire, designed based on the Robbins’ 10 criteria indexes, through 550 respondents who selected randomly through clustering sampling. Two types of statistical testing were employed, descriptive and inferential statistics. Correlation analysis was used to test the relationships between dimensions of organizational cultures with job satisfaction. The results showed that there is a significant and positive relationship between organization identity, managerial support, risk taking ability, participation, organizational communication, control and organizational integration with job satisfaction. However, the relationship between individual creativity, conflict, and reward system with job satisfaction was not supported in this study. The result of this study is useful for managers to increase productivity in the company by the factors of organizational culture.
The Illusion of Electronic Brainstorming Productivity : Theoretical and Empirical Issues

In a recent commentary, Dennis and Valacich (1999) raise several issues concerning the effectiveness of electronic brainstorming (EBS) and conclude that, when brainstorming groups contain more than eight individuals, EBS technology is more effective than nominal brainstorming. The present paper offers several theoretical and empirical reasons to justify our disagreement with this conclusion.
Brief Research Report: Parents' Homework Emotions Favor Students' Homework Emotions Through Self-Efficacy

ABSTRACT While homework is a frequent source of distress, positive attitudes of parents can help students develop positive emotions and self-efficacy regarding homework. In this study, we tested the hypothesis that parents' emotions, favored by autonomous motivation, directly and indirectly relate with students' emotions through their self-efficacy with regard to homework. Questionnaires were administered to 205 fourth- to eighth-grade students and their parents to assess both groups' positive and negative emotions, students' self-efficacy with regard to homework, and parents' autonomous motivation. The results supported the hypothesized model: parents' autonomous motivation is associated with parents' positive emotions, which is then associated with students' positive and negative emotions, both directly and through the mediation of students' self-efficacy for doing homework. The discussion focuses on theoretical and educational implications.
Bogor/Kiasan: A k-bounded Symbolic Execution for Checking Strong Heap Properties of Open Systems

This paper presents Kiasan, a bounded technique to reason about open systems based on a path sensitive, relatively sound and complete symbolic execution instead of the usual compositional reasoning through weakest precondition calculation that summarizes all execution paths. Kiasan is able to check strong heap properties, and it is fully automatic and flexible in terms of its cost and the guarantees it provides. It allows a user-adjustable mixed compositional/non-compositional reasoning and naturally produces error traces as fault evidence. We implemented Kiasan using the Bogor model checking framework and observed that its performance is comparable to ESC/Java on similar scales of problems and behavioral coverage, while providing the ability to check much stronger specifications
Demands-abilities fit, work beliefs, meaningful work and work engagement in nature-based jobs

Orientation: Meaningful work and personal engagement are important dimensions of flourishing of employees, especially when individuals work in challenging jobs. Research purpose: This study aimed to investigate the relationship between demands–abilities fit, work beliefs, meaningful work and engagement in individuals in nature-based jobs. Motivation for the study: Individuals working in nature often work under challenging circumstances without the necessary resources. A research gap exists regarding the effects of demands–abilities fit and work beliefs on meaningful work. It is also not clear how these antecedents and meaningful work will impact the engagement of individuals working in nature. Research approach, design and method: A cross-sectional survey was used with a convenience sample of 161 nature-based employees. Data were collected using a structured online questionnaire consisting of items from the demands–abilities fit scale, work–life questionnaire, work and meaning Inventory, work engagement scale and a biographical questionnaire. Main findings: Work beliefs (calling, career and job) and demands–abilities fit predicted a large percentage of the variance in meaning making. Work beliefs (calling and job) and demands–abilities fit also predicted a large percentage of the variance in greater good motivations. Demands–abilities fit and a calling work orientation indirectly affected work engagement via meaningful work. The scales which measured calling and job orientations showed insufficient discriminant validity in relation to the scales which measured positive meaning and work engagement. Practical and managerial implications: Managers should consider implementing interventions to affect the demands–abilities fit (through human resource management interventions) and work beliefs of individuals working in nature (through job crafting). Promoting perceptions of meaningful work might contribute to higher personal engagement. Contribution or value-add: This study contributes to scientific knowledge regarding the effects of meaningful work and its antecedents on personal engagement.
X-ray Structures of Precursors of Styrylpyridine-Derivatives Used to Obtain 4-((E)-2-(Pyridin-2-yl)vinyl)benzamido-TEMPO: Synthesis and Characterization

The synthesis and characterization of the precursor isomers trans-4-(2-(pyridin-2-yl)vinylbenzaldehyde (I), trans-4-(2-(pyridin-4-yl)vinylbenzaldehyde (II), trans-4-(2-(pyridin-2-yl)vinylbenzoic acid (III) and (E)-4-(2-(pydridin-4-yl)vinylbenzoic acid (IV) are reported. These compounds were prepared in order to obtain trans-4-((E)-2-(pyridin-2-yl)vinyl)benzamide-TEMPO (V). Compounds I and II were obtained by using a Knoevenagel reaction in the absence of a condensing agent and solvent. Oxidation of the aldehyde group using the Jones reagent afforded the corresponding acid forms III and IV. A condensation reaction with 4-amino-TEMPO using oxalyl chloride/DMF/CH2Cl2 provided the 4-((E)-2-(pyridin-2-yl)vinyl)benzamide-TEMPO. Single crystals of compounds I, II and III were obtained and characterized by X-ray diffraction. Compound I belongs to space group P21/c, a = 12.6674(19) Å, b = 7.2173(11) Å, c = 11.5877(14) Å, β = 97.203(13)° and the asymmetric unit was Z = 4, whereas compound II was in the space group P21, with a = 3.85728(9) Å, b = 10.62375(19) Å, c = 12.8625(2) Å, β = 91.722 (2)° and the asymmetric unit was Z = 2. Compound III crystallized as single colorless needle crystals, belonging to the monoclinic system with space group P21, with Z = 2, with a = 3.89359(7) Å, b = 17.7014(3) Å, c = 8.04530(12) Å, β = 94.4030 (16)°. All compounds were completely characterized by IR, 1H-NMR, EI-MS and UV-Vis.
ERP Customization as Software Engineering: Knowledge Sharing and Cooperation

Enterprise resource planning (ERP) vendors provide multiple configuration possibilities ranging from module selection to master data provision to steer access rights for different users. These configuration possibilities cover anticipated variability. If the customer requires adaptation beyond what's anticipated, the source code of the product must be adapted. Customizations in this article's context are source code based adaptations of software products. The size and complexity of customizations range from simple report generation to developing independent add-ons that support specific businesses, for example, solutions for flight carriers. The size and lead time of such projects can compare to a full-size software development project. Enterprise resource planning (ERP) systems must be configured and customized to fit a specific company. The authors discuss cooperation with regard to ERP systems customization.
Functional connectivity and infant spatial working memory: a frequency band analysis.

The limited research on the functional meaning of infant EEG frequency bands has used measures of EEG power. The purpose of this study was to examine task-related changes in frontal EEG coherence measures for three infant EEG frequency bands (2-5 Hz, 6-9 Hz, 10-13 Hz) during a spatial working memory task. Eight-month-olds exhibited baseline-to-task changes in frontal EEG coherence for all infant frequency bands. Both the 2-5 Hz and the 10-13 Hz bands differentiated frontal functional connectivity during the distinct processing stages, but each band provided unique information. The 10-13 Hz band, however, was the only frequency band to distinguish frontal EEG coherence values during correct and incorrect responses. These data reveal valuable information concerning frontal functional connectivity and the functional meaning of three different infant EEG frequency bands during working memory processing.
Team identity in youth soccer: The role of coaches' feedback patterns and use of humour

The purpose of this study was to empirically examine the relationship between coaches' communication patterns (feedback and use of humour) and team identity in youth soccer. A cross-sectional design was used and participants were 532 soccer players, aged from 13 to 20 years, taking part in a youth soccer tournament, the Sør Cup. Structural Equation Modelling based multiple regression analysis was conducted, and the findings revealed that positive/instructive feedback and coaches' use of humour were positive significant predictors of team identity. Contrary to our expectations, negative/punishment feedback was not significantly related to team identity. The findings are discussed within a social identity framework. It is concluded that positive/instructive feedback and the use of humour are elements that coaches may use to develop the team identity. However, future work is needed to further validate the scales used in this study, and to examine how the use of humour may influence the athlete and the team.
Maternal Metabolic Conditions and Risk for Autism and Other Neurodevelopmental Disorders

OBJECTIVE: We examined whether metabolic conditions (MCs) during pregnancy (diabetes, hypertension, and obesity) are associated with autism spectrum disorder (ASD), developmental delays (DD), or impairments in specific domains of development in the offspring. METHODS: Children aged 2 to 5 years (517 ASD, 172 DD, and 315 controls) were enrolled in the CHARGE (Childhood Autism Risks from Genetics and the Environment) study, a population-based, case-control investigation between January 2003 and June 2010. Eligible children were born in California, had parents who spoke English or Spanish, and were living with a biological parent in selected regions of California. Children’s diagnoses were confirmed by using standardized assessments. Information regarding maternal conditions was ascertained from medical records or structured interview with the mother. RESULTS: All MCs were more prevalent among case mothers compared with controls. Collectively, these conditions were associated with a higher likelihood of ASD and DD relative to controls (odds ratio: 1.61 [95% confidence interval: 1.10–2.37; odds ratio: 2.35 [95% confidence interval: 1.43–3.88], respectively). Among ASD cases, children of women with diabetes had Mullen Scales of Early Learning (MSEL) expressive language scores 0.4 SD lower than children of mothers without MCs (P < .01). Among children without ASD, those exposed to any MC scored lower on all MSEL and Vineland Adaptive Behavior Scales (VABS) subscales and composites by at least 0.4 SD (P < .01 for each subscale/composite). CONCLUSIONS: Maternal MCs may be broadly associated with neurodevelopmental problems in children. With obesity rising steadily, these results appear to raise serious public health concerns.
Immigration as a risk factor for adolescent adaptation in Greek urban schools

The purpose of this study was to examine the association of immigrant status to adversity and adjustment. Two samples of 12- to 15-year-old public school students in the Athens area were studied: a sample of first generation Albanian and Native Greek students attending two public schools (N = 325), and a sample of first-generation Pontian immigrants (of Greek heritage) and Native Greek students attending a third public school (N = 242). Competence and emotional adjustment were measured with multiple methods and informants, including school grades, number of absences, teacher ratings of achievement and behaviour, peer popularity nominations and self-report measures of emotional symptoms and anxiety. Adversity measures included immigrant status, a risk score based on life events and another based on socioeconomic (SES) variables. Hierarchical regression analyses revealed that in the Albanian schools, SES and life events were associated with worse adjustment in multiple domains. Once these differences were controlled, immigrant status was still associated with lower grades and fewer nominations as friends by classroom peers. In contrast, in the Pontian school, immigrant status did not have unique significance; only SES disadvantage was related to academic achievement as assessed by grades. The “Greekness” of Pontian students and discrimination against Albanian students are discussed as possible explanations for these results.
Experiential and Doctrinal Religious Knowledge Categorization in Parkinson's Disease: Behavioral and Brain Correlates

Recent studies suggest changes in religious cognition in a subgroup of patients with Parkinson's disease (PD e.g., Butler et al., 2011). It is unclear whether this deficit extends to both doctrinal and experiential categorization forms of religious cognition. Kapogiannis et al. (2009b) dissociated experiential and doctrinal religious knowledge to different neural networks using fMRI. We examined Kapogiannis' dissociation against the background of PD side of onset (LOPD, ROPD), assessing performance both On- and Off-medication. In the behavioral portion of the study, we used a statement classification task in combination with scholar derived test sets for experiential and doctrinal religious knowledge categorization in conjunction with neuropsychological measures. In the neuroimaging portion of the study, we expanded on Kapogiannis' study by examining the same networks in PD. The behavioral data revealed that all groups rated (categorized) the scholar derived tests of experiential and doctrinal significantly differently than the scholars. All groups, including the scholars, classified more phrases as doctrinal than experiential. Religious cognition differed in the PD groups: those with PD Off-medication and LOPD Off-medication comprehended scholar defined experiential phrases with more difficulty, making them more likely to be classified as mixed or doctrinal. This was in contrast to the subjective frequency of classification of phrases as experiential paired with a cognitive decline in PD Off-medication; whereas PD On-medication showed a positive correlation with cognitive state and subjective doctrinal classification. For ROPD, cognitive state was associated with subjective experiential and doctrinal frequency of classification. With more intact intellect, there was a greater likelihood of classifying phrases subjectively as mixed, and the converse for experiential. Furthermore, religiosity negatively predicted subjective doctrinal frequency in LOPD, with the converse in ROPD. In fcMRI in PD, we found resting state functional intrinsic connectivity of reward networks associated with classification of statements using seeds in bilateral nucleus accumbens in PD. For experiential regressors, there was a negative correlation in bilateral frontal lobes paired with a positive correlation in left occipital visual areas (BAs 17, 18). For doctrinal regressors, there was a positive correlation in right BA 20.
On the Evolution of Attitudes towards Risk in Winner-Take-All Games

A long-standing conjecture is that winner-take-all games such as patent races lead to the survival of risk-takers and the extinction of risk-averters. In many species a winner-take-all game determines the males' right to reproduce, and the same argument suggests that males will evolve to be risk-takers. Psychological and sociological evidence buttresses the argument that males are more risk-taking than females. Using an evolutionary model of preference-formation, we investigate to what extent evolution leads to risk-taking in winner-take-all environments.
Bounds on geomechanical constants for a model of heterogeneous reservoirs

A well-known result due to Hill provides an exact expression for the bulk modulus of any multicomponent elastic composite whenever the constituents are isotropic and the shear modulus is uniform throughout. Although no precise analog of Hill’s result is available for the opposite case of uniform bulk modulus and varying shear modulus, it is shown here that some similar statements can be made for shear behavior of random polycrystals composed of laminates of isotropic materials. This model is intended to incorporate characteristics that mimic geomechanical properties of heterogeneous earth reservoirs, including local layering due to sedimentary processes. In particular, the Hashin-Shtrikman-type bounds of Peselnick, Meister, and Watt for random polycrystals composed of hexagonal (transversely isotropic) grains are applied to our model of polycrystals of laminates. An exact product formula relating the Reuss estimate of bulk modulus and an effective shear modulus (of laminated grains composing the system) to products of the eigenvalues for quasi-compressional and quasi-uniaxial shear eigenvectors also plays an important role in the analysis of the overall shear behavior of the random polycrystal. When the bulk modulus is uniform in such a system, the equations are shown to reduce to a simple form that depends prominently on the uniaxial shear eigenvalue o as expected from physical arguments concerning the importance of uniaxial shear in these systems. Applications of the analytical results presented here include benchmarking of numerical procedures used for studying elastic behavior of complex composites, and estimating coefcients needed in up-scaled equations for elasticity and/or poroelasticity of heterogeneous reservoirs.
Medial Expression of TNF-α and TNF Receptors Precedes the Development of Atherosclerotic Lesions in Apolipoprotein E/LDL Receptor Double Knockout Mice

TNF-α is present in atherosclerotic lesions, activates endothelial adhesion molecule expression, stimulates the release of proinflammatory cytokines and matrix metalloproteinases and promotes smooth muscle cell proliferation and migration. Taken together these observations suggest that TNF-α may be functionally involved in early atherosclerosis development. To further evaluate this hypothesis we compared vascular TNF-α and TNF receptor expression in atherosclerosis-susceptible apoE-/-/LDL receptor-/- mice and control C57BL/6 mice. The aortas of 8 week old apoE-/-/LDLreceptor-/- mice displayed immunoreactivity for TNF-α as well as TNF p55 and p75 receptors (2.1 ± 1.6%, 5.6 ± 1.5% and 3.6 ± 1.3% of total media area, respectively), but did not have any detectable lesions. A marginal increase in TNF-α and TNF receptor immunoreactivity was observed at 12 weeks and atherosclerotic plaques were detected in 1 out of 5 animals. At 16 weeks TNF-α expression in the media was increased more than four-fold as compared with 8 week old mice, and atherosclerosis was widespread. TNF-α immunoreactivity was also observed in all plaques. In addition, at the same age a tendency towards increased TNF-α mRNA levels was detected in the double knockout mice compared to age-matched controls. A further increase in TNF-α and TNF receptor immunoreactivity as well as plaque size was observed at 20 weeks. With only a few exceptions, no TNF-α or TNF receptor immunoreactivity was detected in C57BL/6 control mice. These findings demonstrate that medial TNF-α and TNF receptor expression precedes lesion formation in apoE-/-/LDL receptor-/- mice.
Understanding Situational Online Information Disclosure as a Privacy Calculus

The effect of situational factors is largely ignored by current studies on information privacy. This paper theorized and empirically tested how an individual's decision-making on information disclosure is driven by competing situational benefits and risk factors. The results of this study indicate that, in the context of an e-commerce transaction with an unfamiliar vendor, information disclosure is the result of competing influences of exchange benefits and two types of privacy beliefs (privacy protection belief and privacy risk belief). In addition, the effect of monetary rewards is dependent upon the fairness of information exchange. Monetary rewards could undermine information disclosure when information collected has low relevance to the purpose of the e-commerce transaction.