Magnetic cylindrical colloids at liquid interfaces exhibit non-volatile switching of their orientation in an external field

We study the orientation of magnetic cylindrical particles adsorbed at a liquid interface in an external field using analytical theory and high resolution finite element simulations. Cylindrical particles are interesting since they possess multiple locally stable orientations at the liquid interface so that the orientational transitions induced by an external field will not disappear when the external field is removed, i.e., the switching effect is \emph{non-volatile}. We show that, in the absence of an external field, as we reduce the aspect ratio $\alpha$ of the cylinders below a critical value ($\alpha_c \approx 2$) the particles undergo spontaneous symmetry breaking from a stable side-on state to one of two equivalent stable tilted states, similar to the spontaneous magnetisation of a ferromagnet going through the Curie point. By tuning both the aspect ratio and contact angle of the cylinders, we show that it is possible to engineer particles that have one, two, three or four locally stable orientations. We also find that the magnetic responses of cylinders with one or two stable states are similar to that of paramagnets and ferromagnets respectively, while the magnetic response of systems with three or four stable states are even more complex and have no analogs in simple magnetic systems. Magnetic cylinders at liquid interfaces therefore provide a facile method for creating switchable functional monolayers where we can use an external field to induce multiple non-volatile changes in particle orientation and self-assembled structure

A Comparison of V̇O2, and Muscle and Prefrontal Cortex Tissue Oxygen Extraction Between Short and Long-term Aerobically Trained Men Aged 40 - 60 Years

International Journal of Exercise Science 13(3): 964-978, 2020. This study was designed to compare systemic O2 utilization (V̇O2), and changes in tissue O2 extraction [deoxyhemoglobin (ΔHHb)] in the vastus lateralis (VL), gastrocnemius (GAST) and pre-frontal cortex (PFC) tissue; between aerobically short-term trained (STT) and long-term trained (LTT) older men (40 - 60 yr) who were matched for current training load. On separate occasions, 14 STT and 14 LTT participants completed ramp incremental (RI) and square-wave constant load (SWCL) tests on a cycle ergometer. In LTT compared to STT; (i) V̇O2 was higher during the RI (p \u3e 0.001) and SWCL (p \u3e 0.001) tests, (ii) ΔHHb in the GAST was greater in SWCL (p = 0.011); and (iii) ΔHHb in the PFC was greater at 90% GET during SWCL (p = 0.011). The additional years of training in LTT compared to STT (LTT 17.50yr ± 6.94yr vs STT 1.68yr ± 0.31yr) were associated with higher V̇O2peak, and sub- GET V̇O2,and ΔHHb in the GAST and PFC at sub- GET exercise, despite there being no difference in current training volume

Alien Registration- Buzza, Bertie (Brownville, Piscataquis County)

https://digitalmaine.com/alien_docs/10794/thumbnail.jp

The Vespers Psalms of Baldassare Galuppi

Although Baldassare Galuppi was arguably the best known and most successful Italian composer of the eighteenth century, his name, his history, and his works have been relinquished to the periphery of the historiographical narrative. While Galuppi\u27s masses, operas, and solo motets have been examined, his vespers psalms have been neglected by previous musicologists; most of the existing studies have been superficial, with little consideration of important questions such as formal approach, stylistic development, compositional idiosyncrasies, questions of authenticity, or what those factors might collectively tell the twenty-first-century musicologist about music in settecento Venice. The bulk of this work consists of an examination and analysis of the vespers psalm settings for voices and orchestra that survive in Galuppi’s autograph manuscripts. By correcting long-perpetuated falsehoods and omissions of biographical detail, it accurately places the composer within the framework of the Venetian settecento. It then investigates his role as the public face of Italian music, and of comic opera in particular. Consideration of the composer’s reception history, of the flourishing of printed music criticism, and of nationalistic undercurrents among factions of the opera world answers important questions about Galuppi’s posthumous legacy. Framing Galuppi’s autograph vespers psalms against those of his Venetian predecessors and contemporaries, Antonio Lotti, Antonio Vivaldi, Benedetto Marcello, Giuseppe Saratelli, Antonino Biffi, Nicola Porpora, and Ferdinando Bertoni, appropriately situates them within the context of eighteenth-century Venetian sacred music and provides a point of departure for the analysis of the structural qualities of his works. Traditional Roman numeral analysis reveals tonal features unique to Galuppi, particularly in relationship to his formal structure, which, in turn, provides a basis for gauging the degree to which Galuppi\u27s harmonic language was atypical for Venetian sacred music. The survey of vocal styles, examination of the characteristics of the instrumental writing, analysis of the use of the psalm texts, study of the relationship of text to Galuppi’s music, identification of formal idiosyncrasies, and investigation of other salient compositional attributes yield a deeper understanding of his sacred music and provide a musical fingerprint that serves as a useful basis from which to extrapolate further information from the surviving corpus of autograph manuscripts, as well as for assessing those works for which no autograph survives. This study then identifies and articulates key characteristics of Galuppi\u27s compositional style that shed light on the authenticity issues that plague other doubtful Galuppi attributions. Finally, this study summarizes each of the individual autograph works in order to supplement and correct the definitive catalog of Galuppi’s sacred music, Ines Burde’s Thematisch-Systematisches Verzeichnis der venezianischen Kirchenmusik von Baldassare Galuppi, including observations of characteristics of each of the works studied, speculation on their provenance, and extrapolation of details of the circumstances of their creation

Investigating a Professional Development School Model of Teacher Education in Canada

We examined the effectiveness of a professional development school model of teacher education in Canada. Teacher education candidates responded positively to program features related to sustained participation and collaboration in school communities throughout the year. Their efficacy beliefs about developing professional knowledge were most strongly related to the school component of the program. This highlights the importance of careful selection and preparation of associate teachers where teacher candidates are placed in only one school. Nous avons fait l’examen de l’efficacité d’un modèle de développement professionnel de formation des enseignants en milieu scolaire au Canada. Les candidats enseignants ont réagi positivement aux dimensions du programme relatives à une participation soutenue et à la collaboration au sein des communautés scolaires tout au long de l’année. Leurs convictions relativement au développement efficace d’un savoir professionnel étaient fortement liées à la dimension scolaire du programme. Cette conclusion souligne l’importance de sélectionner et de préparer avec soin les maîtres associés lorsque les candidats à l’enseignement sont assignés à un seul établissement

Exploring the Relationship Between Self-Regulated Learning and Reflection in Teacher Education

Literature on teacher learning has shown links between being a self-regulated learner, reflecting effectively on one’s own practice, and being described as an “adaptive expert”. For instance, the metacognitive skills needed for effective reflection on teaching practice are seen as critically important to developing adaptive expertise in the context of the highly complex classroom environment. Similarly, self-regulated learning is often defined, at least in part, in terms of using metacognitive skill to adapt one’s approach to complex learning situations or problems. Although there is rich literature on reflective practice in teacher education, less is known about measuring teachers’ self-regulated learning or the relationship between self-regulated learning and teacher reflections. This research examines reflective practice and self-regulated learning through pre-service teachers’ written reflections. The study makes a novel adaptation of a rubric designed to evaluate teacher education candidates’ reflections to measure self-regulated learning. Findings suggest that the rubric could also be useful in understanding the self-regulated practices of teacher education candidates

Alien Registration- Buzza, Elsie M. (Brownville, Piscataquis County)

https://digitalmaine.com/alien_docs/10795/thumbnail.jp

Qualitative Pedagogical Findings To Improve Critical Thinking Skills

The motivation for this paper comes from need - the need for our students to learn not only subject matter through traditional methods in a classroom, but foundational learning through experiences obtained directly in the workplace. The terminology used today for this student experience is referred to as experiential learning which comes in two forms, either learning 1) by yourself or 2) through experiential education (learning through programs established by others). You can kindly refer to learning by yourself as “nature’s way of learning” as it occurs as a direct participation in the life cycle. However, experiential education can be defined more succinctly as a structured approach, using experiences and the direction of others to create the learning curve. The issue at hand is simple - does participatory (experiential) education create critical thinkers among our students and make them more aware of and able to more easily solve the problem(s) at hand? Our diligence has focused on two distinctly different courses in two different semesters (fall 2011 and spring 2012) in two different business disciplines (business marketing and entrepreneurship) at two distinctly different universities (Wagner College and Monmouth University) with one similar problem - is there a significant benefit to experiential learning over traditional classroom pedagogy? Our findings are profound in the respect that both the participating subjects (students) and the participating businesses achieved significant benefits when this mode of education was used. Our conclusions in the paper signify that although more research is needed to further determine the significance of the impact of experiential learning, we have come away with a true picture of the educational benefits to the students and the productive benefits to the clients involved. An experiential educator's role is to organize and facilitate direct experiences of phenomenon under the assumption that this will lead to genuine (meaningful and long-lasting) learning. This often also requires preparatory and reflective exercises BOTH inside and outside the classroom

Two-dimensional flow of foam around a circular obstacle: local measurements of elasticity, plasticity and flow

We investigate the two-dimensional flow of a liquid foam around circular obstacles by measuring all the local fields necessary to describe this flow: velocity, pressure, bubble deformations and rearrangements. We show how our experimental setup, a quasi-2D "liquid pool" system, is adapted to the determination of these fields: the velocity and bubble deformations are easy to measure from 2D movies, and the pressure can be measured by exploiting a specific feature of this system, a 2D effective compressibility. To describe accurately bubble rearrangements, we propose a new, tensorial descriptor. All these quantities are evaluated via an averaging procedure that we justify showing that the fluctuations of the fields are essentially random. The flow is extensively studied in a reference experimental case; the velocity presents an overshoot in the wake of the obstacle, the pressure is maximum at the leading side and minimal at the trailing side. The study of the elastic deformations and of the velocity gradients shows that the transition between plug flow and yielded regions is smooth. Our tensorial description of T1s highlight their correlation both with the bubble deformations and the velocity gradients. A salient feature of the flow, notably on the velocity and T1 repartition, is a marked asymmetry upstream/downstream, signature of the elastic behaviour of the foam. We show that the results do not change qualitatively when various control parameters vary, identifying a robust quasistatic regime. These results are discussed in the frame of the actual foam rheology literature, and we argue that they constitute a severe test for existing rheological models, since they capture both the elastic, plastic and fluid behaviour of the foam.Comment: 41 pages, 25 figures, submitted to Journal of Fluid Mechanics (but not in JFM style), short version of the abstrac