EV Wireless Charger

As electric vehicles of all sizes become more popular, the demands for convenient ways of powering them grow as well. Wireless chargers have become a preferred alternative to conventional wired chargers for their convenience and safety features. This thesis covers the design and testing of a wireless charger suitable for a small electric vehicle such as an E-bike. An inductive based power transfer is used along with key electronics including inverters, rectifiers, buck and boost converters. Another important element to this design is its ability to use either a DC or AC primary source. This makes the charger more versatile than single source designs by allowing for the choice of a power grid connection or an off-grid power such as through a solar panel. The design process for all components will be discussed and followed with simulation results showing ideal performance. A prototype is also constructed to provide real life analysis of the design and to determine effects of misalignment

The impacts of experiential learning travel courses on student education, professionalism, and interpersonal relationships

This research study aims to explore the academic, professional, and interpersonal impacts experiential learning travel courses are having on undergraduate college students. Current research demonstrates that many educational formats do not provide optimal educational outcomes to students. Empirical observations from multiple faculty suggest experiential learning travel courses do provide these outcomes as well as highly impactful lifelong skills. Focus groups with diverse populations were conducted with current students on how experiential learning travel courses (ELTC) impacted their education, career, and interpersonal relationships with other students and faculty. Faculty were surveyed on their perception of how students were impacted by these courses. The research collected from the focus groups was analyzed through a combination of thematic content and narrative analysis. Searching for insightful narratives and recurring themes allowed conclusions to be drawn about the overall academic, professional, and interpersonal impacts these experiential courses have on students. The research hypothesis of this study is that experiential learning travel courses will positively impact academic, professional, and interpersonal aspects of students’ lives and these aspects will interact with each other as well. The research aims to provide a better understanding of how experiential learning travel courses are impacting the lives of students who participate in such courses. (Author abstract)Gilbert, A. (2021). The impacts of experiential learning travel courses on student education, professionalism, and interpersonal relationships. Retrieved from http://academicarchive.snhu.ed

On Assessing the Scope of Missing Native Americans in Nebraska: Results From a State-Wide Study and Recommendations for Future Research: On Assessing the Scope of Missing Native American Persons: Results From a State-Wide Study and Recommendations for Future Research

Recent legislation in multiple states has called for studies on the scope of missing Native American persons. Here we report on one such study from Nebraska by first describing the practical and methodological issues for researchers to consider when examining data on missing Native persons. Then, using data from four point-in-time-counts in 2020, rates of Native American missing persons as well as case contexts over the study period are reported. Findings show that Native Americans are disproportionately represented among Nebraska\u27s missing persons, that reports often involve minor boys, and that cases are dynamic and most are resolved quickly. Relatedly, most Native missing persons cases are only listed on the state clearinghouse, not the national missing persons lists. The paper is concluded with a discussion of specific directions for future research and policy regarding missing Native Americans

COVID Aftermath: The Impact of the Pandemic on Florida\u27s Public School Students

The goal of this White Paper is to provide an overview of the current and future impacts the COVID-19 pandemic (“COVID”) has left on Florida’s public school education system. Additionally, this White Paper review shows how public education institutions are still working to address the loss of instructional time and long-term consequences due to pandemic-related school disruptions

Social Firms as a means of vocational recovery for people with mental illness: a UK survey.

RIGHTS : This article is licensed under the BioMed Central licence at http://www.biomedcentral.com/about/license which is similar to the 'Creative Commons Attribution Licence'. In brief you may : copy, distribute, and display the work; make derivative works; or make commercial use of the work - under the following conditions: the original author must be given credit; for any reuse or distribution, it must be made clear to others what the license terms of this work are.BACKGROUND: Employment is associated with better quality of life and wellbeing in people with mental illness. Unemployment is associated with greater levels of psychological illness and is viewed as a core part of the social exclusion faced by people with mental illness. Social Firms offer paid employment to people with mental illness but are under-investigated in the UK. The aims of this phase of the Social Firms A Route to Recovery (SoFARR) project were to describe the availability and spread of Social Firms across the UK, to outline the range of opportunities Social Firms offer people with severe mental illness and to understand the extent to which they are employed within these firms. METHOD: A UK national survey of Social Firms, other social enterprises and supported businesses was completed to understand the extent to which they provide paid employment for the mentally ill. A study-specific questionnaire was developed. It covered two broad areas asking employers about the nature of the Social Firm itself and about the employees with mental illness working there. RESULTS: We obtained returns from 76 Social Firms and social enterprises / supported businesses employing 692 people with mental illness. Forty per cent of Social Firms were in the south of England, 24% in the North and the Midlands, 18% in Scotland and 18% in Wales. Other social enterprises/supported businesses were similarly distributed. Trading activities were confined mainly to manufacturing, service industry, recycling, horticulture and catering. The number of employees with mental illness working in Social Firms and other social enterprises/supported businesses was small (median of 3 and 6.5 respectively). Over 50% employed people with schizophrenia or bipolar disorder, though the greatest proportion of employees with mental illness had depression or anxiety. Over two thirds of Social Firms liaised with mental health services and over a quarter received funding from the NHS or a mental health charity. Most workers with mental illness in Social Firms had been employed for over 2 years. CONCLUSIONS: Social Firms have significant potential to be a viable addition to Individual Placement and Support (IPS), supporting recovery orientated services for people with the full range of mental disorders. They are currently an underdeveloped sector in the UK

Precursor-surface interactions revealed during plasma-enhanced atomic layer deposition of metal oxide thin films by in-situ spectroscopic ellipsometry

We find that a five-phase (substrate, mixed native oxide and roughness interface layer, metal oxide thin film layer, surface ligand layer, ambient) model with two-dynamic (metal oxide thin film layer thickness and surface ligand layer void fraction) parameters (dynamic dual box model) is sufficient to explain in-situ spectroscopic ellipsometry data measured within and across multiple cycles during plasma-enhanced atomic layer deposition of metal oxide thin films. We demonstrate our dynamic dual box model for analysis of in-situ spectroscopic ellipsometry data in the photon energy range of 0.7–3.4 eV measured with time resolution of few seconds over large numbers of cycles during the growth of titanium oxide (TiO2) and tungsten oxide (WO3) thin films, as examples. We observe cyclic surface roughening with fast kinetics and subsequent roughness reduction with slow kinetics, upon cyclic exposure to precursor materials, leading to oscillations of the metal thin film thickness with small but positive growth per cycle. We explain the cyclic surface roughening by precursor-surface interactions leading to defect creation, and subsequent surface restructuring. Atomic force microscopic images before and after growth, x-ray photoelectron spectroscopy, and x-ray diffraction investigations confirm structural and chemical properties of our thin films. Our proposed dynamic dual box model may be generally applicable to monitor and control metal oxide growth in atomic layer deposition, and we include data for SiO2 and Al2O3 as further examples

Modification ω-6/ω-3 ratio and increase of the shelf life of anchovy oil (Engraulis ringens) with addition of olive oil (Olea europaea)☆

In the food industry, oil blending represents a simple method for the generation of products with desired nutritional and technological properties. The objective of this work was to blend anchoveta oil (AO) with virgin olive oil (VOO) to modify the ω-6/ω-3 ratio of the product for nutritional purposes and to evaluate its oxidative stability index (OSI) for technological purposes. Four AO/VOO blends were formulated: 50/50, 40/60, 30/70 and 20/80 (w/w), generating a ω-6/ω-3 ratio between 0.610–2.129, nutritionally recommendable. The Rancimat method allowed determining the OSI of the formulations at temperatures of 100, 110 and 120 °C, finding OSI ranges between 0.963–3.410 h, 0.430–1.730 h and 0.183–0.813 h, respectively. The kinetic behavior of the formulations with respect to activation energy (89.622 to 93.414 kJ/mol), entropy (−13.248 to −17.657 kJ/mol), enthalpy (86.455 to 90.248 kJ/mol), Gibbs energy (91.928 to 96.348 kJ/mol) and Q10 (2.090 to 2.153) has been described. The formulations are proposed as an alternative to increase the shelf life of AO and increase the nutritional value of VOO

What are the impacts of within-field farmland management practices on the flux of greenhouse gases from arable cropland in temperate regions? A systematic map protocol

Background: Reducing greenhouse gas emissions is a vital step in limiting climate change and meeting the goals outlined in the COP 21 Paris Agreement of 2015. Studies have suggested that agriculture accounts for around 11% of total greenhouse gas emissions and the industry has a significant role in meeting international and national climate change reduction objectives. However, there is currently little consensus on the mechanisms that regulate the production and assimilation of greenhouse gases in arable land and the practical factors that affect the process. Practical advice for farmers is often overly general, and models based on the amount of nitrogen fertiliser applied, for example, are used despite a lack of knowledge of how local conditions affect the process, such as the importance of humus content and soil types. Here, we propose a systematic map of the evidence relating to the impact on greenhouse gas flux from the agricultural management of arable land in temperate regions. Methods: Using established methods for systematic mapping in environmental sciences we will search for, collate and catalogue research studies relating to the impacts of farming in temperate systems on greenhouse gas emissions. We will search 6 bibliographic databases using a tested search string, and will hand search a web-based search engine and a list of organisational web sites. Furthermore, evidence will be sought from key stakeholders. Search results will then be screened for relevance at title, abstract and full text levels according to a predefined set of eligibility criteria. Consistency checking will be employed to ensure the criteria are being applied accurately and consistently. Relevant studies will then be subjected to coding and meta-data extraction, which will be used to populate a systematic map database describing each relevant study's settings, methods and measured outcomes. The mapping process will help to identify knowledge gaps (subjects lacking in evidence warranting further primary research) and knowledge clusters (subjects with sufficient studies to allow a useful full systematic review), and will highlight best and suboptimal research methods