Development of a specialty crop harvesting system

With the field of agriculture constantly growing and evolving, new crops are constantly being developed in order to meet world consumer demands. As technology progresses, more and more specialty crops are being grown not only for food, but also for other properties such as chemical extracts for use in many applications. Because of the rising cost of labor, many people involved in the specialty crop industry are turning to mechanization in order to reduce their production costs. A problem with mechanization is that there is a lack of harvesting technology for every specialty crop. This technology needs to be developed, and a crucial part of this development is the hydraulic and electrical system that is used to reliably control the actions of any specialty crop harvesting system. A self-propelled crop harvesting system was developed to mechanically harvest a desired flower from a plant, separate the flower from foreign material, and store approximately 1,200 pounds of product onboard while leaving the plant intact for future harvests. The machine developed utilizes a four row head with a set of rotating picking fingers that harvest the desired mature flowers from the plant. Structural, hydraulic, electrical, and control systems were included in development and fabrication of a working prototype harvesting system. An initial prototype was developed to determine the harvesting efficiency of the mechanical harvester in comparison to hand harvesting. The initial prototype was found to harvest 45% of the desired mature flower crop. This outcome led to the development of a full scale prototype harvesting system

Internationalsation in the Classroom

Multicultural societies require multicultural universities and internationalisation is a powerful influence within higher education. Conceptual understandings of internationalisation and practical activities have evolved significantly to prepare students for global workplaces, social cohesion and personal development (Higher Education Strategy Group, 2011). Internationalisation benefits the development of interculturally competent graduates who can participate in diverse, global labour markets, yet, international students require support while adjusting to new learning environments. A student-centred approach to learning is superseding traditional pedagogy in order to support the most diverse range of learning preferences that are characteristic of multicultural groups (Vita, 2001). Educators are encouraged to expand their teaching portfolios with tools that support international students, while also benefiting their domestic counterparts (Arkoudis, 2006. Seery, 2014). Adapting teaching methods for culturally mixed groups helps to address barriers to learning, to value cultural diversity and to encourage inclusive and supportive engagement. International students may need explicit instruction on assessable activities to help develop their own understanding of topics and to avoid plagiarism (Carroll, 2008). Constructive feedback for international students should consider their additional cognitive loads as they broaden their learning and develop new academic writing and referencing skills. To support lecturers, this project considers the impact of policy and core pedagogical categories of learning preferences, teaching methods, technology and assessment as they relate to internationalisation. It aims to offer some practical advice and to illustrate some examples to help address the needs of international students, alongside their domestic colleagues, in learning environments that are increasingly multicultural

Politically motivated former prisoner groups: community activism and conflict transformation

Aims and objectives: This study represents the first sustained quantitative and qualitative attempt to involve both Republicans and Loyalists in an investigation of the impact of imprisonment and the role of politically motivated former prisoners in the process of conflict transformation in Northern Ireland. The overall aim of the project is to examine the ways in which groups of former prisoners are involved in peace-building and conflict transformation work and to evaluate the constraints and impediments placed upon their activities by the effects of the imprisonment process, politically motivated release and residual criminalisation. In pursuing the evaluation of the role of politically motivated former prisoners working within and without their own communities, the research has six specific objectives: To trace the evolution and development of former prisoner groups; To evaluate the impacts of imprisonment and release on the personal lives of former prisoners; To assess the constraints imposed on former prisoners as agents of change by the residual criminalisation arising from their status; To determine the potential of the former prisoner community in challenging intra-community tensions and evaluate their potential and actual contribution to conflict transformation at the inter-community level; To compare and contrast the effectiveness of Loyalist and Republican former prisoners as agents of change within their own communities; To explore the notion of former prisoners as agents of social and communal transformation within broader political processes through grounding the knowledge and practical experience of the former prisoner community within the broader conceptual context of conflict transformation

Measuring European Population Stratification with Microarray Genotype Data

A proper understanding of population genetic stratification—differences in individual ancestry within a population—is crucial in attempts to find genes for complex traits through association mapping. We report on genomewide typing of ∼10,000 single-nucleotide polymorphisms in 297 individuals, to explore population structure in Europeans of known and unknown ancestry. The results reveal the presence of several significant axes of stratification, most prominently in a northern-southeastern trend, but also along an east-west axis. We also demonstrate the selection and application of EuroAIMs (European ancestry informative markers) for ancestry estimation and correction. The Coriell Caucasian and CEPH (Centre d'Étude du Polymorphisme Humain) Utah sample panels, often used as proxies for European populations, are found to reflect different subsets of the continent’s ancestry

FPGA Implementations of SHA-3 Candidates:CubeHash, Grøstl, L{\sc ane}, Shabal and Spectral Hash

Abstract: Hash functions are widely used in, and form an important part of many cryptographic protocols. Currently, a public competition is underway to find a new hash algorithm(s) for inclusion in the NIST Secure Hash Standard (SHA-3). Computational efficiency of the algorithms in hardware will form one of the evaluation criteria. In this paper, we focus on five of these candidate algorithms, namely CubeHash, Grøstl, L{\sc ane}, Shabal and Spectral Hash. Using Xilinx Spartan-3 and Virtex-5 FPGAs, we present architectures for each of these hash functions, and explore area-speed trade-offs in each design. The efficiency of various architectures for the five hash functions is compared in terms of throughput per unit area. To the best of the authors\u27 knowledge, this is the first such comparison of these SHA-3 candidates in the literature

Genome-wide association identifies ATOH7 as a major gene determining human optic disc size

Optic nerve assessment is important for many blinding diseases, with cup-to-disc ratio (CDR) assessments commonly used in both diagnosis and progression monitoring of glaucoma patients. Optic disc, cup, rim area and CDR measurements all show substantial variation between human populations and high heritability estimates within populations. To identify loci underlying these quantitative traits, we performed a genome-wide association study in two Australian twin cohorts and identified rs3858145, P = 6.2 × 10−10, near the ATOH7 gene as associated with the mean disc area. ATOH7 is known from studies in model organisms to play a key role in retinal ganglion cell formation. The association with rs3858145 was replicated in a cohort of UK twins, with a meta-analysis of the combined data yielding P = 3.4 × 10−10. Imputation further increased the evidence for association for several SNPs in and around ATOH7 (P = 1.3 × 10−10 to 4.3 × 10−11, top SNP rs1900004). The meta-analysis also provided suggestive evidence for association for the cup area at rs690037, P = 1.5 × 10−7, in the gene RFTN1. Direct sequencing of ATOH7 in 12 patients with optic nerve hypoplasia, one of the leading causes of blindness in children, revealed two novel non-synonymous mutations (Arg65Gly, Ala47Thr) which were not found in 90 unrelated controls (combined Fisher's exact P = 0.0136). Furthermore, the Arg65Gly variant was found to have very low frequency (0.00066) in an additional set of 672 controls