1,356,034 research outputs found
A Transaction System for the NCUBE
No full textWe present the design of a transaction system which supports tuple-oriented database operations in the concurrent environment. An implementation of this system for the NCUBE Corporation NCUBE-7 hypercube processor is described. The implementation includes both the basic kernel to support the database operations and two software packages to assist users of the system
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Porting and optimizing a routing library for Dataparallel C on the nCUBE 2 system
No full textDataparallel C has been designed for various kinds of architectures and was developed jointly at University of New Hampshire and Oregon State University.
This project dealt with porting the libraries to the nCUBE 2 system and helping a user compile his programs on nCUBE 2 directly from a Sun workstation by the help of a script. The broadcast and the random write routines were optimized for large packet sizes and to utilize the new architectural advancements in nCUBE machine. The assembly code was studied to find out if that can be optimized too. Timings for various benchmark codes were recorded and compared with that of the original code
Performance of a QCD code on the NCUBE hypercube
No full textThe performance of a pure gauge QCD code on the NCUBE hypercube is analysed. Both load imbalance and communication contribute to the concurrent overhead, with the load imbalance term becoming dominant for sufficiently large hypercubes. The performance model is compared with timings measured on the NCUBE using both the standard and fast versions of the CrOS III communication systems
NCUBE User Activity Academic Year 1988/89
No full textThis document summarizes usage and activities associated with the NCUBE computer system. The system is located within the Computer and Communications Research Center on the 3rd floor of Bryan Hall, School of Engineering and Applied Science, Washington University, St. Louis, Missouri. We begin with a brief review of the machine\u27s hardware characteristics and then proceed to reviewing user activities
Upgrading wineries to biorefineries within a Circular Economy perspective: An Italian case study
No full textIn the challenge of transforming waste into useful products that can be re-used in a circular perspective, Italian wine industry can represent a suitable model for the application of the bioeconomy principles, including the valorisation of the agricultural and food waste. In the present study, a comprehensive environmental assessment of the traditional production of wine was performed and the potentiality of a biorefinery system, based on winery waste and aimed at recovering useful bio-based products, such as grapeseed oil and calcium tartrate, was examined through Life Cycle Assessment (LCA). The wine company "I Borboni", producing Asprinio wine in the Campania Region (Italy), was proposed as a case study. The hotspots of the linear production system were identified and the bottling phase, in particular the production of packaging glass, resulted to contribute to the generation of impacts at 63%, on average, versus 14.3% of the agricultural phase and 22.7% of the vinification phase. The LCA results indicated human carcinogenic toxicity, freshwater eutrophication and fossil resource scarcity impact categories as the most affected ones, with normalized impacts amounting to 9.22E-03, 3.89E-04 and 2.64E-04, respectively. Two side production chains (grapeseed oil and tartrate production) were included and circular patterns were designed and introduced in the traditional production chain with the aim of valorising the winery residues and improving the overall environmental performance. By implementing the circular approach, environmental impacts in the global warming, freshwater eutrophication and mineral resource scarcity impact categories, in particular, resulted three times lower than in the linear system. The results achieved demonstrated that closing the loops in the wine industry, through the reuse of bio-based residues alternatively to fossil-based inputs within the production process, and integrating the traditional production system with new side production chains led to an upgrade of the wineries to biorefineries, towards more sustainable production patterns. (c) 2021 Elsevier B.V. All rights reserved
The Filmed Body as a Model of Understanding African Queer Lived Experiences
No full textIn Africa, a combination of cultural and religious practices, repressive laws instituted during the colonial period, and homophobic nationalisms have ensured that individuals who identify as queer experience their difference in private spaces and at the margins of societies. African people who identify as queer navigate different forms of social silence and this has an important impact on how they toggle between invisibility and visibility and ultimately how they experience embodiment and relationality. Given such a situation, Gibson Ncube explores queer lived experiences in Africa through the lens of the body in films. The body in films is a powerful model for understanding the complexities of identity, desire, and gender within diverse African communities. By examining how queer individuals navigate their physical selves in relation to societal norms, it is possible to gain insight into the intersectionality of gender, sexuality, and cultural contexts. Drawing mainly on the work Ncube did in the book Queer Bodies in African Films (2022), he contends that the filmed body as a model serves as a canvas upon which societal expectations and personal expressions of gender and sexual identities collide. By zooming in on the body, Ncube is interested in how the filmed queer body is invested with multiple and often intersecting discourses and narratives. It is inscribed with more than just desire, eroticism, and sexuality. It is as a disruptive figure whose materiality calls for a rethinking not just of how gender and sexual identities are performed and staged but also how they are constructed and embodied. Thus, considering the body as a model allows for a rich understanding of the multifaceted tapestry of queer lived experiences in Africa. Gibson Ncube lectures at Stellenbosch University (South Africa). He has held fellowships supported by the Stellenbosch Institute for Advanced Study, the National Humanities Center (USA) and Leeds University Centre for African Studies (UK). He is currently an AfOx Visiting Fellow at Oxford University. He has published widely in the fields of comparative literature, gender and queer studies as well as cultural studies. He co-convened the Queer African Studies Association (2020-2022) and was the 2021 Mary Kingsley Zochonis Distinguished Lecturer (African Studies Association, UK). He currently sits on the Editorial Boards of the following journals: Journal of Literary Studies, the Canadian Journal of African Studies, and the Nordic Journal of African Studies. He is currently the Assistant Editor of the South African Journal of African Languages and the French Book Review Editor for the Canadian Journal of African Studies
Biogas from source separated organic waste within a circular and life cycle perspective. A case study in Ontario, Canada
No full textThe appropriate transformation and valorisation of biogas offers environmental and economic opportunities in a future with restrictions upon fossil-based fuels and materials. The LCA method was used to quantify and compare the potential environmental impacts of an AD plant incorporating biogas co-generation and upgrading options, namely AD-CHP and AD-RNG. Using an average Anaerobic Digestion facility in Ontario, Canada, modelled after real facilities, as a case study, electricity and steel were identified as potential hotspot input materials carrying a disproportionate environmental burden for biogas production. With a system expansion approach, the biogas was subsequently utilized to produce (1) both heat and electricity using a Combined Heat and Power (CHP) system, or (2) upgraded to renewable natural gas (also called biomethane) through chemical amine scrubbing, respectively. In comparing the biogas co-generation and upgrading options, the AD-CHP alternative resulted in a lesser environmental load, two times lower when compared to the AD-RNG biomethane recovery option. Furthermore, the avoided burden of producing fossil-based electricity, natural gas, and chemical fertilizer was analyzed and compared against their renewable counterparts. Significant reductions in emissions and in the depletion of fossil fuels were achieved, thus confirming the positive efforts of diverting organic waste from landfills to reduce organic waste disposal impacts and improve the management of organic waste. The analysis has provided useful insights to bioenergy project developers, policy makers and the scientific community regarding the processing of source separated organic waste, biogas production, and its upgrading alternatives in a circular economy perspective
Upgrading wineries to biorefineries within a Circular Economy perspective: An Italian case study
No full textIn the challenge of transforming waste into useful products that can be re-used in a circular perspective, Italian wine industry can represent a suitable model for the application of the bioeconomy principles, including the valorisation of the agricultural and food waste. In the present study, a comprehensive environmental assessment of the traditional production of wine was performed and the potentiality of a biorefinery system, based on winery waste and aimed at recovering useful bio-based products, such as grapeseed oil and calcium tartrate, was examined through Life Cycle Assessment (LCA). The wine company “I Borboni”, producing Asprinio wine in the Campania Region (Italy), was proposed as a case study. The hotspots of the linear production system were identified and the bottling phase, in particular the production of packaging glass, resulted to contribute to the generation of impacts at 63%, on average, versus 14.3% of the agricultural phase and 22.7% of the vinification phase. The LCA results indicated human carcinogenic toxicity, freshwater eutrophication and fossil resource scarcity impact categories as the most affected ones, with normalized impacts amounting to 9.22E−03, 3.89E−04 and 2.64E−04, respectively. Two side production chains (grapeseed oil and tartrate production) were included and circular patterns were designed and introduced in the traditional production chain with the aim of valorising the winery residues and improving the overall environmental performance. By implementing the circular approach, environmental impacts in the global warming, freshwater eutrophication and mineral resource scarcity impact categories, in particular, resulted three times lower than in the linear system. The results achieved demonstrated that closing the loops in the wine industry, through the reuse of bio-based residues alternatively to fossil-based inputs within the production process, and integrating the traditional production system with new side production chains led to an upgrade of the wineries to biorefineries, towards more sustainable production patterns
Harnessing intellectual property for development : some thoughts on an appropriate theoretical framework
No full textIntellectual Property (IP) law is expected to provide equitable protection for eligible kinds of works in virtually all industries; to achieve fair treatment of creator, user and societal interests; and to contribute to a country's efforts to achieve economic development. This is a tall order and debates pertaining to IP law tend to be heated and heavily contested due to the tensions caused by these high expectations. In an effort to move such debates forward, this paper advances a nuanced framework through which contested IP issues may be resolved and upon which national IP policy and legislation may be based
Abezimu/Badimo (ancestors) and copyright law: from the Decolonial Turn to the pluriversal author
No full text"A spectre is haunting Europe – the spectre of Communism” is the sentence that opens Karl Marx's and Friedrich Engels' iconic text, The Communist Manifesto. Marx and Engels set out what was to become the primary program of action for all communist parties in Europe. The Communist Manifesto's cardinal observation was that Communism was an epochal inevitability, and that it was the task of all revolutionaries to ensure that conditions are befitting for a Communist reality. Although in a completely different context, this thesis accepts that the spectre that is currently haunting Africa and the Global South is that of Decoloniality and Decolonisation. This thesis studiedly perceives the #MustFall moment as one that presented South Africa with a Decolonial Turn – this is an epochal inevitability that seeks to complete the incomplete task of decolonising society. To respond to the Decolonial Turn, this thesis methodologically employs decolonial theory, Black consciousness philosophy and Black Marxism to study the essence of copyright law's authorship from the perspective of people on the other side of Western modernity. The basic contention of this thesis, and its original contribution to the corpus of literature as regards authorship in copyright, is that the logical aftermath of the Decolonial Turn leads to a “pluriversal author” – this is a type of author that is reflective of the pluriversal epistemic and ontological patterns of a decolonised world. This is a world where many worlds exist. One of those worlds is inhabited by people whose epistemic traditions suggest that an author in copyright is inclusive of “Abezimu/Badimo”, that is the non-human author who is represented in an onto-triadic edifice of Being; the living, the dead and the yet-to-be-born. The thesis that is defended in this doctoral project is that Abezimu/Badimo are an author in copyright, and that this ought to be accepted, embraced, and reflected in prevailing copyright law legislative frameworks
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