Orientador: Heraldo Cesar Gonçalves / Banca: Paulo Roberto de Lima Meireles / Banca: Renata Helena Branco Arnandes / Banca: Carlos Elysio Moreira da Fonseca / Banca: Francisco de Assis Fonseca de Macedo / Resumo: O objetivo deste trabalho foi avaliar a influência dos níveis de fibra em detergente neutro oriundo da forragem (FDNf) em dietas peletizadas, sobre o consumo e digestibilidade aparente da matéria seca (MS), proteína bruta (PB), fibra em detergente neutro (FDN) e carboidratos não fibrosos (CNF); e balanço de nitrogênio. Foram utilizadas cinco cabras fistuladas no rúmen dispostas em quadrado latino 5x5, sendo os níveis de FDNf de 15, 20, 25, 30 e 35% , as variáveis independentes. Os níveis de FDNf influenciaram de maneira quadrática os consumos de MS, PB, FDN e CNF expressos em % PV ou em unidade de peso metabólico (P<0,05). O maior consumo de MS foi encontrado no nível de 25,69% de FDNf e o valor médio de consumo de MS foi de 1,3% PV, inferior ao recomendado pelo NRC (1981) (1,46% PV), no entanto as exigências nutricionais foram atendidas em todas as dietas. Os coeficientes de digestibilidade aparente da MS, PB, e FDN foram influenciados de maneira quadrática pelos níveis de FDNf nas dietas, e foram maiores nos níveis de FDNf que apresentaram menor consumo de MS enquanto que o coeficiente de digestibilidade aparente dos CNF foi influenciado de maneira linear decrescente, diminuindo 0,66% para cada unidade de aumento dos níveis de FDNf nas dietas. Houve efeito quadrático dos níveis de FDNf nas dietas sobre o balanço de nitrogênio, o qual foi positivo em todos os níveis, mostrando eficiência das dietas quanto ao suprimento de proteína para os animais. / Abstract: The purpose of this study was to evaluate the influence of the levels of neutral detergent fiber from forage (fNDF) in pelleted diets on the intake and digestibility of dry matter (DM), crude protein (CP), neutral detergent fiber (NDF) and on non-fibrous carbohydrates (NFC); and nitrogen balance. Five fistulated in the rumen goats were used, arranged in 5x5 Latin square, and the levels of fNDF 15, 20, 25, 30 and 35%, being the independent variables. Effect quadratic of the levels of fNDF on the intake of DM, CP, NDF and NFC expressed in % LW, or unit of metabolic weight (P<0,05). The higher consumption of DM was found in the level of 25.69% of fNDF and the average consumption of MS was 1.3% of LW, below that recommended by NRC (1981) (1.46% LW), however the nutritional requirements were met in all diets. The coefficients of apparent digestibility of DM, CP, and NDF were affected by the levels of fNDF of the diets in a quadratic behaviors and were higher on the levels of fNDF which had lower consumption of MS while the coefficient of digestibility of NFC has been so influenced linear decreasing, reducing 0.66% for each unit of increase in the fNDF of the diets. There was a quadratic effect of fNDF levels of the diets on the nitrogen balance, which was positive at all levels, showing efficiency of the diets on the supply of protein for the animals. / Doutor

This thesis critically assesses the scope and method of criminalisation of the concept of fraud under the Fraud Act 2006 through the discussion of an apparent ‘duality’ between (co-existing) criminal and non-criminal resolution mechanisms. The reader will find social sciences theory and mixed-methods research techniques being used to identify and characterise a dysfunction between legislation and the social function of fraud control and its resolution. The 2006 Act appears to present a categorical and monolithic headline offence of fraud qualified by dishonesty, yet it is not clear that the Act clearly identifies the scope of effective criminalisation with respect to fraud. The dishonesty-based conduct offence provided in the Fraud Act 2006 is examined in the context of contemporary theory and practical considerations that relate to the discipline of law-enforcement. This work investigates pre-industrial modes of fraud resolution and identifies industrial-era points of divergence between the concepts of fraud and theft (a similar headline offence defined and criminalised under the Theft Act 1968). The work also offers an empirical study of survey-based data collection involving one-hundred-and-forty participants (N=140). It measured the practical extent of criminalisation of fraud in terms of participant indications of the (typically) most likely official outcome in response to sixteen hypothetical examples of fraud offences. The survey results appear to support practical, contextual, and theoretical considerations from the literature on the inhibitors to the consistent application of a conduct-based general fraud offence. The data and findings highlight the advantages of detailed actus reus-based criminalisation of types of fraud that require additional control through effective criminalisation.

Thesis (MEd)--Cape Peninsula University of Technology, 2018. / Much of today’s classroom learning, particularly in the senior primary phase, focuses on activities whereby learners acquire facts and rules, employing only the lower levels of cognition: knowledge, comprehension and application (Sonn, 2000). In order to bridge the gap between the real and the ideal (Hartley, Bertram & Mattson, 1999) with regards to the development of critical and creative thinking, educators need to be trained and provided with the necessary tools and relevant teaching strategies to better align their teaching to the requirements of the Curriculum and Assessment Policy Statement (CAPS). This research developed quantitative and qualitative instruments to investigate Grade 6 teachers’ understanding of creative and critical thinking before and after a professional learning community (PLC) intervention. The implementation of the PLC involved the Creative Problem Solving (CPS) programme’s generating tools, and was guided by Bourdieu’s social field theory. The aim of the intervention was to consider the shifts and changes that teachers might make in their teaching practices to purposely include the development of creative and critical thinking skills in their pedagogy. A pragmatic paradigm was utilized, focusing on methodological flexibility with the use of an explanatory sequential mixed method approach. Although this small, convenient sample excludes any statistical evidence, it does reflect that given time and support, teachers’ pedagogical habitus (see Feldman & Fataar, 2014) is adaptable. The meaningful, cooperative approach of the PLC and the development of creative and critical thinking skills, through the use of the creative problem solving programme, created the platform for change.

Student Number : 0009815Y - PhD thesis - School of Physics - Faculty of Science / Determining the properties of composites and how these relate to those of the components and the microstructure is extremely useful as it enables the understanding of existing materials and the design of new materials with a variety of applications. However, the link between the ac conductivity data and the microstructure and composition of the composite is not a simple one. Simulations of binary composites are presented which show that from relatively simple component properties arise complex composite properties. Accurate identi¯cation of the components of composites, using characteristic frequencies, is demonstrated for simulated and actual experimental data. The Maxwell-Wagner and Brick Layer Models, which are often applied beyond the range of their original derivation, are found to consistently ¯t the data of yttria-stabilized zirconia ceramics measured at various tempera- tures. The results from ¯tting single crystal and polycrystalline sample data indicate that accurate modeling of the properties of the polycrystalline sam- ples requires more theoretical work on the conduction mechanisms in single crystals and the grains of the ceramics. Data from a polyester-resin/silicon system is found to be best ¯tted us- ing the Single Exponent Phenomenological Percolation Equation (SEPPE) with experimentally measured component properties as input. The percola- tion threshold obtained suggests a system where the insulator tends coat the conductor. The results show that, with the actual component properties as input, the SEPPE can be used to qualitatively and semi-quantitatively model and ¯t composite ac conductivity data. Analysis of the ac conductivity of liquid-phase-sintered silicon carbide ce- ramics showed that for this system, the features often observed in the imped- ance spectra are all due to a multi-component grain bondary/binder phase and not the SiC grains. This multi-component grain boundary phase can be ¯tted accurately to the Brick Layer Model, indicating a microstructure where an insulating component coats a more conducting component.

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abstract: Lithium metal is a promising anode for the next generation lithium batteries owing to its high capacity (3860 mAh g-1) and the lowest negative reduction potential (-3.04 V). Commercial produced lithium anodes have a native rough surface which deteriorates the cycling performance of the battery. Here, an attempt has been made to deposit lithium on copper from an electrolytic cell consisting of simple electrolyte of pyridine and lithium chloride at room temperature. Water is known to react aggressively with the lithium metal, however in the electrochemical plating process, it has a significant beneficial effect in catalyzing the electrochemical reactions. The effect of trace amounts of water was investigated in air as well as in controlled atmosphere of argon, nitrogen, breathing grade dry air and ultra-zero dry air. The electrochemical products examined by Fourier transform infrared spectroscopy revealed the deposition might require the reduction of pyridine to facilitate the reduction of the lithium salt. Purity of the lithium film was determined by inductively coupled plasma mass spectrometry. / Dissertation/Thesis / Masters Thesis Materials Science and Engineering 2019

This paper examines the characteristics of effective professional development (PD). It discusses the change process in a system and how it applies to an educational setting, including teacher practice and student achievement. This study uses a survey, interviews, and student benchmark assessment data to assess the influence of PD on a district. Four main themes surfaced from the research in this study: past experiences mold beliefs and practices, coherence throughout a system clarifies expectations, individualized professional learning leads to authentic change in practice, and professional development influences the entire system.

La mise en forme spatiale de faisceau laser, en particulier l’obtention d’un profil d’intensité homogène intéresse aussi bien la recherche que l’industrie (recherche biomédicale, microscopie, découpe, gravure, marquage laser, Laser MegaJoule…). De par ses avantages intrinsèques, nous sommes désireux d’apporter une solution fibrée, monomode et à maintien de polarisation. Ces travaux s’articulent autour de 2 problématiques :L’obtention d’un mode plat polarisé linéairement.Différentes solutions ont été mises en place pour satisfaire cette contrainte (embouts, fibres air-silice et fibres toute solide incluant des barreaux de contraintes). Nous avons notamment réalisé une fibre microstructurée air-silice monomode délivrant un mode plat de diamètre 20µm à 1050nm de polarisation linéaire (taux d’extinction de 20dB, biréfringence ~0,6x10-4). Cette fibre a été intégrée avec succès dans une chaine amplificatrice délivrant un faisceau cohérent avec un profil d’intensité aplati polarisé linéairement dépassant 100µJ en régime nanoseconde. En parallèle le développement de codes numériques a permis de proposer des designs augmentant la biréfringence voire polarisants.L’augmentation de l’aire effective du mode.Nos études ont permis de mettre en évidence les compromis entre qualité modale et pertes par courbures y compris dans le cas de structure présentant des résonateurs pour « vider » les modes d’ordre supérieur. L’impact sur le contenu modal des indices de différents types de barreaux de contraintes et de la biréfringence induite a également été étudié. Enfin nous avons réalisé une fibre mode plat à 1050nm de diamètre 34µm (aire effective ~1200µm2) utilisable en tant qu’embout. / Spatial beam shaping, in particular an homogeneous intensity profile is very attractive to fundamental research and industry (biomedical, microscopy, laser cutting, engraving, marking, Laser MegaJoule…). Thanks to its intrinsic advantages we wish to offer a fibered, single-mode and polarization maintaining solution. This work addresses two difficulties:Producing singlemode fiber delivering a flat mode while preserving the light polarization.Several solutions were developed to achieve this objective: fiber end-cap, air-silica and all-solid microstructured fibers with Stress Applying Parts (SAP). We have obtained several fibers including an air-silica microstructured single-mode fiber which delivers a flat fundamental mode with a diameter of 20µm at 1050nm linearly polarized (polarization extinction ratio of 20dB and a birefringence of 0.6x10 4). This fiber was successfully integrated in an amplifier chain delivering a coherent output beam with a flat intensity profile linearly polarized with a power of more than 100µJ for 10 ns pulses. In the same time, we developed a numerical code enabling us to propose designs with enhanced birefringence and even a polarizing behavior.Increase of mode effective areaOur studies exhibit the compromises required between modal quality and bending losses even in the case of a fiber design with resonator to extract from the core its high order modes. The impact of indices of different kinds of SAP and the impact of the induced birefringence on the modal content are also studied. Finally we realized a fiber delivering a flat intensity with a mode diameter equals to 34µm (effective area ~1200µm²) at 1050nm which can be used like an end-cap.

This ethnography traces my journey teaching kindergarten in the Pico Union neighborhood in Los Angeles. Its purpose is to understand the macro and micro levels of the community to inform my teaching practices and support my students and families. On a micro-level, I conducted case studies on three specific students. Data analysis of in-home interviews, personal interactions, and assessments allowed me to create action plans to best support these students’ academic, social, and emotional needs. On a macro level, I studied my students’ environments: community, school, and classroom. Attending community events, learning about my school’s mission, and reflecting on my classroom culture and expectations, I internalized how students’ environments plays a role in their education. By analyzing whole class and individual student data and reflecting on my own development, I grew as a professional educator and became an effective and socially just teacher.

Qualitative observational research, interviews, and student samples explain the complex social structure in my math classroom and my effectiveness as a teacher. The ethnographic narrative will be divided into four major sections. The major sections are Part A, Part B, Part C, and Part D. Part A discusses how my personal and professional identity affect my performance in the classroom. Part B highlights action plans that support an English learner, a student with an IEP, and a student with a significant life experience. Part C explores how the demographics of the community and school site affect my classroom environment. Lastly, Part D presents my professional reflections and professional development plan. Together, these studies suggest skills needed to be an effective teacher involve more than expertise in mathematics. Effective teachers use critical self-analysis and their students’ funds of knowledge to create an inclusive and purposeful classroom. Keywords: identity, educator, social capital, purpose, effective