180 research outputs found

    The Effectiveness of College Home Economics for Family Living

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    Education in general purposes to widen one’s horizon and to give a deeper understanding and enrichment of what has already been experienced and to provide new experiences. College education should be so organized that it can be used later. Curriculum planning and evaluation has been an important part of the education program. Many colleges and universities have launched self-evaluation studies in an effort to appraise and improve their home economics program, that it may be a very real preparation for home and family living. Spafford states: The achieving of a satisfying and functioning philosophy of life with emphasis of personal and family living should be set as the primary purpose of home economics - - provide the foundation for all the teaching. The developing of a wholesome personality and the working out of satisfactory human relationships is the second broad objective which concerns home economics. The broading and enriching of life is the third large objective of interest to home economics. The acquiring of techniques and skills needed in immediate personal and home living, learning to use one’s resources to attain the value set up as most worthwhile in life, is the fourth major objective which concerns home economics. The findings of one’s relation to and place in the vocational world and preparing for it is the fifth major purpose of importance to home economics. These are not separate purposes to be achieved one by one, nor will home economics be the only field to contribute to their attainment. Rather they are purposes which should run through all education and through all home economic teaching. Nor should they be seen as purposes of the student out of relationship to the family group or the larger society in which he lives

    Project Lead The Way Students More Prepared For Higher Education

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    Project Lead the Way (PLTW) is a hands-on, project-based engineering curriculum for high school and middle school students, which has quadrupled annual enrollment in Texas in five years to over 23,000 students. The diversity of students participating has also increased dramatically. Using six years of longitudinally-linked student data, the academic outcomes of cohorts of PLTW students were compared to matched cohorts of non-PLTW students. Matching was based on Grade 8 state math assessment scores and demographic and program participation variables. Findings show that PLTW students scored significantly higher on the state’s Grade 11 mathematics assessment, a higher percentage met the college-ready criterion, a higher percentage enrolled in Texas higher education institutions, and the non-college-bound PLTW students earned higher wages.

    Statistical study of passive portfolio management of risky assets

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    In this paper we consider the problem of creating the optimal investment portfolio. We reveal the concept of the securities portfolio and highlight the most significant parameters of its management.We prove the need of diversification. We implement classical Markowitz portfolio theory. Also we consider the features of passive portfolio management

    U.S. Every Student Succeeds Act: Negative Impacts on Teaching Out-of-Field

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    Every Student Succeeds Act (ESSA) requires states to ensure the equitable distribution of out-of-field teachers. Using over 180 million student-course-teacher records from Texas between 2011-12 and 2017-18, we found out-of-field teaching rates have increased dramatically since ESSA became law. We also found vast inequities in which teachers are assigned to teach out-of-field and dramatic differences in student out-of-field course-taking rates across demographic characteristics.  The strongest predictors of teachers teaching out-of-field is that they work in a charter school or completed alternative certification programs. Black teachers and students are most likely to teach and take courses out-of-field, and Latinx teachers and students are least likely. Policy implications are considered given negative impacts of out-of-field teaching on student academic achievement

    Convenient and versatile route to 2-alkyl-19-nor-analogues of calcitriol

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    Since decades, researchers have been intrigued by 1α,25-dihydroxy vitamin D3 (calcitriol) in various important cellular processes. Apart from its well-known role in calcium- and phosphate-regulation, this steroid metabolite presents also a remarkably broad spectrum of transitions. Most notably, the ability to inhibit cell growth and stimulate cell differentiation upon binding to the vitamin D receptor (VDR) turns calcitriol into a potential drug candidate. Moreover, the VDR- receptor’s found in over 30 different tissues in the human body, including various tumors, opening up new therapeutic areas. However, dosing test animals with the required supra-fysiological amounts of calcitriol causes acute hypercalcemia leading to bone deformation, hardening of soft organs and eventually mortality. Labour-intensive SAR studies on the complex vitamin D scaffold established that calcemic activities could be separated from the therapeutic activities by using analogues thereof. In fact, analogues are now in advanced stages of research, e.g. inecalcitol is in clinical phase II for the treatment of chronic lymphocytic leukemia and Daivonex (calcipotriol, Leo pharmaceuticals) is already available as a treatment for hyperproliferative disorder (psoriasis). We have shown that two calcitriol modifications, where a methyl or ethyl group is introduced at the 2α-position, had little calcemic effects in mice, while remaining potent in in vitro assays on inhibition of human cancer cell growth. However, the initially developed synthetic routes were highly inefficient and only gave sub-milligram amounts of these analogues. Here, we will present a practical route for novel A-ring building blocks, starting from D-(-)-quinic acid allowing larger scale synthesis of these sort of analogues, as required for studies in animal models of various diseases. Such extensive in vivo tests on these promising 2-alkyl-14,20-bisepi-19-nor-23-yne-analogues are now in progress at the KULeuven

    Redefining Knee Balance in a Medially Stabilized Prosthesis: An In-Vitro Study

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    Background To date, there is still no consensus on what soft tissues must be preserved and what structures can be safely released during total knee arthroplasty (TKA) with a medially stabilized implant. Objective The aim of this study was to analyze the effect of a progressive selective release of the medial and lateral soft tissues in a knee implanted with a medially stabilized prosthesis. Method Six cadaveric fresh-frozen full leg specimens were tested. In each case, kinematic pattern and mediolateral laxity were measured in three stages: firstly, prior to implantation; secondly, after the implantation of the trial components, but before any soft tissue release; and thirdly, progressively as soft tissue was released with the trial implant in place. The incremental impact of each selective release on knee balance was then analyzed. Results In all cases sagittal stability was not affected by the progressive release of the lateral soft tissue envelope. It was possible to perform progressive lateral release provided the anterior one-third of the iliotibial band (ITB) remained intact. Progressive medial release could be performed on the medial side provided the anterior fibers of the superficial medial collateral ligament (sMCL) remained intact. Conclusion The medially conforming implant remains stable provided the anterior fibers of sMCL and the anterior fibers of the ITB remain intact. The implant's sagittal stability is mainly dependent on its medial ball-in-socket design

    The role of the frontal cortex in memory: an investigation of the Von Restorff effect

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    Evidence from neuropsychology and neuroimaging indicate that the pre-frontal cortex (PFC) plays an important role in human memory. Although frontal patients are able to form new memories, these memories appear qualitatively different from those of controls by lacking distinctiveness. Neuroimaging studies of memory indicate activation in the PFC under deep encoding conditions, and under conditions of semantic elaboration. Based on these results, we hypothesize that the PFC enhances memory by extracting differences and commonalities in the studied material. To test this hypothesis, we carried out an experimental investigation to test the relationship between the PFC-dependent factors and semantic factors associated with common and specific features of words. These experiments were performed using Free-Recall of word lists with healthy adults, exploiting the correlation between PFC function and fluid intelligence. As predicted, a correlation was found between fluid intelligence and the Von-Restorff effect (better memory for semantic isolates, e.g., isolate “cat” within category members of “fruit”). Moreover, memory for the semantic isolate was found to depend on the isolate's serial position. The isolate item tends to be recalled first, in comparison to non-isolates, suggesting that the process interacts with short term memory. These results are captured within a computational model of free recall, which includes a PFC mechanism that is sensitive to both commonality and distinctiveness, sustaining a trade-off between the two
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