Miracle-dz/UniFAR-FTUs huggingface dataset:
Self-Modeling and Children's Cognitive Skill Learning.

Bandura (1982, 1986) contended that psychological procedures change behavior in part by creating and strengthening perceived self-efficacy, or personal beliefs about one's performance capabilities in a given domain. Self-efficacy influences choice of activities, effort expended, persistence, and task accomplishments. Individuals acquire information about their self-efficacy through their actual performances, vicarious (observational) experiences, forms of persuasion, and physiological indexes (e.g., heart rate, sweating).
Study of Differences between Results from Raboratory Tests and Tests of Real Tools for Selected Cold Work Tool Steels

The growing pressure on tool performance and durability increases demands on the materials used and on the choice of optimal heat treatment. The properties of tool steels produced by conventional and powder metallurgy (1.2379, Vanadis 23) were compared after different heat treatment modes. Cryogenic treatment was performed in several batches for 4 hours at-90°C or-196°C. Cryogenic treatment was inserted between quenching and tempering. Mechanical properties were evaluated by hardness tests and three-point bending strength and wear resistance by Pin-on-disk tests. Metallographic analysis was performed using light and electron microscopy. On the basis of the results obtained both materials were subject to selected heat treatment and experimental forming tools produced which were used in operation. During operation the wear of the tools (shape change and volume loss) was assessed. Results of the laboratory tests were then compared with operation tests.
Effect of Oscillating Magnetic Field on Freezing Rate, Phase Transition Time and Supercooling of Deionized Water

Due to a growing interest toward quality improvement of frozen foods, many advanced technologies have been combined with conventional freezing system to expedite rate of freezing and reduce ice crystal formation. This research aimed to investigate the effect of oscillating magnetic field (OMF) in the range of 0 to 12 mT (50 Hz) on freezing rate, phase transition time and supercooling of deionized water during freezing in an air blast freezer at –10°C. The sample was placed between two magnetic cores where an oscillating magnetic field (OMF) was generated and the temperature profile was recorded by a data logger at 1-minute interval. The magnetic field strength was varied at 0, 4, 8, and 12 mT. It was found that there was no significant difference in the freezing rate and phase transition time when different OMF strengths were applied ( p > 0.05). Interestingly, the probability of supercooling occurrence increased when the OMF was applied; without OMF only 16% of the experiment exhibited supercooling phenomenon where 33% was detected when OMF in the range of 4–12 mT was applied. However, the probability of supercooling occurrence was independent of the OMF strength.
Behaviour of Broiler Birds Reared Under Coloured Light Emitting Diodes Vis-A-Vis Incandescent Light Supplemental Lighting Programme

Poultry farming is an age old practice in India, livestock sector contributed about 4.11% to the total gross domestic product and poultry farming is one of the best options available with farmers. Nowadays, the major chunk of poultry production is occurring in intensively managed open sided broiler houses under artificial lighting programme requiring a lot of artificial environmental factors which differ from natural environment in which they were evolved and one of the crucial factors is light management. It is essential for sight, including both visual perspicacity and color discrimination [1]. Being a major International Journal of Current Microbiology and Applied Sciences ISSN: 2319-7706 Volume 8 Number 07 (2019) Journal homepage: http://www.ijcmas. com
The Impacts of Solvents, Heat Treatments and Hole Injection Layers on the Electroluminescent Lifetime of Organic Light-Emitting Devices

iii Acknowledgements . v Dedication . vi List of Figures . x Chapter 1 . x Chapter 2 . x Chapter 4 . xi Chapter 5 . xii Chapter 6 . xii List of Tables . xiii List of Abbreviations . xiv Chapter 1: Introduction. 1 1.1 Operation Mechanism of Organic Light Emitting Devices . 2 1.2 Device Architectures & Materials Selection . 3 1.2. 1 Fluorescent Device . 4 1.2. 2 Phosphorescent Device & The Simplified PhOLED . 6 1.3 Performance Characterization . 9 1.3. 1 Current-Voltage-Luminance (JVL) & EL Lifetime . 9 1.3. 2 Current Efficiency and EQE . 11 1.3. 3 Factors Governing EQE. 13 1.4 OLED Fabrication: Vacuum Thermal Deposition versus Solution Coating . 14 1.4. 1 Vacuum Thermal Deposition . 15 1.4. 2 Solution Coating and Printing Techniques . 16 1.5 Progress and Limitations of Solution-Based OLEDs . 21
Thermal Analysis of Potted Litz Wire for High-Power-Density Aerospace Electric Machines

Increasing the power density and efficiency of electric machines (motors and generators) is integral to bringing electrified aircraft (EA) to commercial realization. To accomplish that, an effort to create a high-efficiency megawatt motor (HEMM) with a goal of exceeding 98% efficiency and 1.46 MW of power has been undertaken at the NASA Glenn Research Center. Of the motor components, the resistive losses in the stator windings are by far the largest contributor (34%) to total loss in the motor. The challenge is the linear relationship between resistivity and temperature, making machine operation sensitive to temperature increases. In order to accurately predict the thermal behavior of the stator, the thermal conductivity of the Litz wire-potting-electrical insulation system must be known. Unfortunately, this multimaterial system has a wide range of thermal conductivities (0.1 - 400 W/m·K) and a high anisotropy (axial vs. transverse), making the prediction of the transverse thermal conductivity, and thus the hot-spot temperatures in the windings, difficult. To do this, a device that simulates the thermal environment found in the HEMM stator was designed. This paper discusses the design, thermal heat conjugate analysis (thermal model), manufacturing, and testing of HEMM's statorette. Results are analyzed by thermal resistance network modeling and microthermal modeling and are compared to analytical predictions of thermal conductivity of the insulated and potted Litz wire system.
Injury rehabilitation and return to play criteria in South African schoolboy rugby union

Objectives: To define the prevalence and nature of injuries amongst South African schoolboy rugby union players and to determine if any definite protocols exists for the rehabilitation and return to play after injuries. Furthermore, to understand the association between injury severity and treatment obtained, as well as associations between rehabilitation, return to play criteria and re-injury occurrence in the same population. Design: A once-off cross sectional study was performed. Setting: Ten elite schools‟ first teams from across South Africa were recruited. A validated rugby union injury report questionnaires were used. Questions regarding rehabilitation and return to play criteria used after injury were added. Subjects: All participants were U/18 boys (17 years 8 months ±0.62) playing rugby union for their respective school‟s first teams. Outcome measures and results: A total of 78.51 injuries per 1000 playing hours (N=118) were reported with moderate and severe injuries (>28 days missed) adding up to 39% of the injuries. The knee and shoulder were identified as the most frequently injured sites and the tackle was the main cause of injury. Severity showed a large practical significant (phi = 0.7) association with treatment by a doctor, indicating that the more severe an injury was, the more likely a player was to seek help from a medical doctor. Only 18 of the reported 118 injuries underwent final phase rehabilitation while only 13 injuries underwent any kind of return to play testing. Conclusions: This study indicated a high prevalence of injuries amongst South African schoolboy rugby union players. No definite rehabilitation structures or return to play criteria were in place, and subsequently reinjury occurrence was also high.
From Multiple- to Single-Pulse All-Optical Helicity-Dependent Switching in Ferromagnetic 
Co/Pt
 Multilayers

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d’enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. From Multipleto Single-Pulse All-Optical Helicity-Dependent Switching in Ferromagnetic Co / Pt Multilayers G. Kichin, M. Hehn, J. Gorchon, G. Malinowski, J. Hohlfeld, S. Mangin
Relationship of trauma history and premenstrual syndrome among female veterans

Relationship of trauma history and premenstrual syndrome among female veterans. ii ACKNOWLEDGMENTS It is a pleasure to acknowledge the people who helped make this thesis possible. First and foremost, I would like to thank Dr. James Torner and Dr. Anne Sadler for giving me the opportunity to work on this study and for providing guidance and support every step of the way. Also, thank you to the staff at the VA, including Dr. Michelle Mengeling and Carrie Franciscus, for assisting me with the data and answering my questions about the study. Finally, thank you to Dr. Wallace for agreeing to be on my committee and for their valuable feedback on this work. iii ABSTRACT Prior research has pointed to an association between a history of traumatic events and premenstrual syndrome (PMS) in women. The objective of this study was to further investigate the relationship between trauma and PMS among female veterans, a population with high rates of sexual and physical abuse, as well as combat-related exposures. We conducted a case-control study of 502 women veterans under the age of 52 who were associated with the Iowa City Veterans Affairs Medical Center. Trauma history, gynecological health, mental health (including posttraumatic stress disorder), and other variables were obtained through telephone interview. Cases were women who had moderate to severe PMS as defined by validated criteria and controls were women without PMS. The prevalence of PMS was 14.3%. Thirty three percent of subjects reported a completed sexual assault, 29% a combat-related trauma, and 86% a non-combat related trauma. Factors significantly associated with PMS (p<0.05) in the univariate analysis were: attempted, completed, and number of rapes during a woman's lifetime; rape before age 18; rape during military service; childhood sexual abuse; and number of non-combat related traumas. Childhood physical abuse and combat-related trauma were not associated with PMS in univariate analyses. In our final multivariate model, lifetime completed sexual assault was associated with PMS (odds ratio =2.42, 95% confidence interval = 1.33-4.40). Findings from this study among female veterans indicate that a history of trauma, particularly sexual trauma, is associated with moderate to severe PMS. Further study is warranted to confirm temporal relationships and causal mechanisms.
The effects of learning a new algorithm on asymptotic accuracy and execution speed in old age : A reanalysis

Time-accuracy curves were derived for 16 younger and 19 older persons who participated in a study on training in the method of loci (Baltes & Kliegl, 1992). The effects of instruction were to immediately and permanently boost asymptotic performance and initially slow down the rate of approach to the asymptote. After extensive practice, rate of approach returned to the initial fast level. Age differences were found in both asymptotic performance and rate of approach. The effects of instruction and practice, however, were similar in younger and older adults, but older adults needed 1 session of instruction more than younger adults did before the intervention showed its full effect.
Composition-lattice Interactions In Ternary Transition-metal Boride Ferromagnetic Systems

Successful development of novel magnetic materials leverages understanding the materials intrinsic magnetic behavior and underlying structural-magnetic property correlations. Of particular interest are materials that undergo coupled magnetic phase transitions sensitive to changes in crystal structure (magnetostructural phase transitions). Magnetostructural phase transformations may be induced by applying multiple stimuli (temperature, pressure, magnetic field) and are often easily tuned by chemical substitution. Composition induced structure changes provide a method for studying the sensitivity of a materials magnetic response to specific bond alterations and changes in the electronic environment. This research aims to quantify the impact of detailed chemistry on the magnetic phase transitions in layered systems where structure and magnetism are strongly coupled. The focus of this Dissertation is to understand structure-composition-property correlations in AlFe2B2 and Fe5SiB2 based technologically relevant new magnetic material systems. Both magnetic systems have layered crystal structures that contribute to their large magnetocrystalline anisotropy, or preference for a material to magnetize along a particular crystallographic direction. The magnitude of the magnetocrystalline anisotropy energy can be used to assess the strength of magnetism-structure interactions and is an important characteristic for magnetic material performance. Additionally both ferromagnetic materials readily undergo chemical substitutions, although prior to this
Effect of synthesis conditions on the electrical resistivity of 
TiSe2

Dilute impurities and growth conditions can drastically affect the transport properties of ${\mathrm{TiSe}}_{2}$, especially below the charge-density-wave transition. In this paper, we discuss the effects of cooling rate, annealing time, and annealing temperature on the transport properties of ${\mathrm{TiSe}}_{2}$: slow cooling polycrystalline ${\mathrm{TiSe}}_{2}$ postsynthesis drastically increases the low-temperature resistivity, which is in contrast to the metallic behavior of single-crystalline ${\mathrm{TiSe}}_{2}$ attributed to charge doping from the residual iodine transport agent. A logarithmic increase of resistivity upon cooling and negative magnetoresistance with a sharp cusp around zero field are observed for the first time for the polycrystalline ${\mathrm{TiSe}}_{2}$ samples, pointing to weak-localization effects due to low dimensionality. Annealing at low temperatures has a similar, but less drastic effect. Furthermore, rapid quenching of the polycrystalline samples from high temperatures freezes in disorder, leading to a decrease in the low-temperature resistivity.
Towards a parameter-free theory for electrochemical process at the nano-scale

The mass and charge distribution at electrochemical interfaces plays a key role in driving electrochemical phenomena. However, in spite of its importance, even the structure of the Pt/water interface under bias, the most basic electrochemical interface, is still almost entirely unknown. Here we present the first ab initio simulation of the double layer structure at the Pt/water interface in realistic solution conditions and its dependence on an applied potential. Our results are enabled by a newly developed ab initio charging approach, which is here briefly described. We reveal that the double layer structure, number density and charge distribution, strongly depends on the applied potential. Furthermore, we show that the metal/surface charging state cannot be described using a traditional simple capacitor model. In fact, the interfacial dipole is not merely determined by the reorientation of the first water layer in contact with the metal surface, but also by its charging state in combination with its number density. Water reorientation becomes relevant only in the second water layer. The dependence of the structure of the Pt/water double layer on the applied potential will likely affect the catalytic processes therein.
Stabilization of vibro-thermal processes during post-production testing of rolling bearings

In the process of post-production testing of rolling bearings, quality classification and/or qualification of finished products as good and defective is performed. In view of mass production, bearing testing should be carried out within a short period of time. Vibroacoustic (VA) processes are widely used for post-production testing. Parameterization of bearing vibrations is largely determined by stabilization of lubrication conditions and VA processes, which to some extent depend on temperature. The article presents the results of temperature measurements carried out during the testing of a set of new tapered roller bearings. On their basis, an attempt was made to estimate the value of rms values of bearing vibration accelerations. This is based on the known relationships between the temperature and viscosity of the oil as well as the relationship between viscosity and acceleration of the bearing vibrations. The estimated acceleration values were verified experimentally. The time after which the temperature of a bearing is stabilized was also determined. The paper also shows the influence of a lubricant on these processes, mainly its kinematic viscosity.
Sewing Thread Consumption for Different Lockstitches of Class 300 Using Geometrical and Multi-Linear Regression Models

Abstract This paper aims to provide rapid and precise methods to allow industrials to predict the amount of sewing thread needed to sew a garment using different lockstitches of class 300 (301, 301/301, 304, 308, 309, 310, 311, 312, and 315). To avoid unused stocks for each stitch type, a sewing consumption value was determined using a geometrical method of different lockstitch shapes. Furthermore, the relationships between overall geometrical models of the studied lockstitches of class 300 were developed. Indeed, based on the geometrical model of lockstitch type 301, all theoretical models proposed were investigated and proved to be accurate. Moreover, referring to the findings, the prediction of the sewing thread consumption relative to each investigated lockstitch was proposed as a function of the studied input parameters. To improve the established models using geometrical technique, a statistical method was conducted. In addition, based on multi-linear regression, compared geometrical and statistical results were discussed and the coefficient R2 value was determined to evaluate the accuracy of the tested methods. By comparing the estimated thread consumption with the experimental ones, we concluded that the accuracy of the models is significant (R2 ranged from 93.91% to 99.10%), which encourages industrialists to use geometrical models to predict thread consumption. Therefore, the accuracy of prediction using the geometrical method is more accurate than the statistical method regarding the range of R2 (from 92.84% to 97.87%). To classify the significance of all studied parameters, their contributions to the sewing thread consumption behavior were analyzed in the experimental design of interest. It was concluded that the most important parameters affecting thread consumption are stitch width, stitch density, and the gap between two needles. The thickness of fabric has a low contribution to the thread consumption value, whereas the effect of yarn count can be neglected.
An Analysis of Teacher Selection Tools in Pennsylvania

The purpose of this study was to examine teacher screening and selection tools currently being utilized by public school districts in Pennsylvania and to compare these tools to the research on qualities of effective teachers. The researcher developed four research questions that guided her study. The Pennsylvania Association of School Personnel Administrators (PASPA) granted the researcher permission to survey their members. PASPA's Executive Director sent an e-mail describing the study and invited his members to participate in the electronic survey. The e-mail asked members to click on a link that took them to a 10-15 minute survey about teacher selection tools. Fifty-five members completed the survey, with a total response rate of 32 percent. Quantitative data were analyzed using, percentages, means and standard deviations. Qualitative analysis was used to interpret data obtained from open-ended questions.The results of the study indicated that approximately 71% of reporting Pennsylvania public schools were utilizing some type of electronic on-line warehousing database for which to search and screen potential teacher candidates. However, a low number of reporting school districts were not using any type of commercial product for screening or interviewing candidates. Further, 93% of reporting school districts were using locally created interview questions. Finally, participants indicated that the top three factors considered when hiring a teacher were the candidate's: knowledge of teaching and learning, content knowledge, and knowledge of good classroom practices. There were insufficient data to determine if the commercial or locally created teacher selection tools were linked to the qualities of effective teachers.
Identity development in men and its relation to psychosocial distress and self-worth

Nous avons examine la variation des cotes attribuees a la detresse psychosociale et a la confiance en soi en fonction du style d'identite et de la periode d'âge. A cette fin, 275 hommes appartenant a trois tranches d'âge ont rempli des questionnaires d'autodeclaration de style identite, de detresse psychosociale et de confiance en soi. Les scores obtenus sur l'echelle du style d'identite ont determine l'attribution aux participants de l'un de trois styles de traitement de l'identite: informationnel, normatif, pensee diffuse/fuyard. Les jeunes ont declare le niveau de detresse le plus eleve, mais la confiance en soi des plus âges etait inferieure a celle des representants des deux autres groupes d'âge. Les hommes possedant un style d'identite normatif (tous âges confondus) ont declare des degres de detresse inferieurs a ceux des participants de style informationnel ou pensee diffuse / fuyard, et leur degre de confiance en soi etait plus eleve que celui des hommes du groupe pensee diffuse/fuyard. Les resultats sont analyses en fonction du developpement de l'identite et du developpement psychosocial la vie durant.
THE BABY DUMPING PHENOMENON IN NIGERIA: A STUDY ON THE PERCEPTION OF MARKET WOMEN IN IBADAN

Baby dumping is one of the most common forms of child abuse in Nigeria. Although this practice is not new, its current frequent occurrence and the negative implications it has on the babies concerned, however, makes it a serious social problem that requires urgent attention. Against this background, this paper examines the patterns, causes, and consequences of the baby-dumping phenomenon in Nigeria. One hundred (100) market women involved in the study were selected through a quota sampling technique. In-depth interview and focus group discussion were the methods employed for data collection. Data interpretation was done through content analysis and ethnographic summaries. Findings showed that the phenomenon of baby dumping is complex in nature : Multiple factors were identified as responsible for its occurrence and it was recognized to have a wide range of social and health implications on the dumped babies. This study advocates for an urgent shift from the current reactive approach to more proactive planning to effectively curtail the problem.