149 research outputs found
SAMEE PRENDAS CON IDENTIDAD: Estrategia de gestión cultural y justicia racial desde la moda étnica afro a partir de narrativas afrodiaspóricas para la generación de ingresos a mujeres sobrevivientes del conflicto armado, la construcción de paz, y el desarrollo social y económico de la Amazonía Colombiana
No full textSAMEE es un emprendimiento de la industria de la moda que nace con el propósito de generar ingresos a mujeres sobrevivientes del conflicto armado, aportar al cambio de imagen de un departamento históricamente estigmatizado y contar narrativas de grandeza de las comunidades negras de Colombia. El diagnóstico realizado permitió identificar la falta de oportunidades laborales para las mujeres en el Caquetá y la inexistencia de emprendimientos sociales que propendan la justicia racial y la visibilización de la confluencia interétnica en la Amazonia colombiana. A partir de este diagnóstico se planteó como objetivo general implementar una estrategia de gestión cultural desde la moda étnica Afro, como forma de justicia racial desde narrativas afrodiaspóricas para la generación de ingresos a mujeres sobrevivientes del conflicto armado, aportando la construcción de paz, y al desarrollo social y económico de la Amazonía Colombiana. Para alcanzar el mismo se realizó la creación y formalización de la empresa SAMEE Prendas con identidad SAS cuyo lanzamiento se realizo el 21 de mayo, día de la afrocolombianidad con la colección denominado sonidos de la diáspora afro en la Amazonia colombiana. Además, se implementó una estrategia de comunicación en dos sentidos una para el posicionamiento de la marca y otra desde la campaña yo compro Afro. Alguna de las conclusiones a las que se llego tras la implementación de esta iniciativa es que SAMEE como emprendimiento social aporta a la ampliación de la memoria cultural afrodiaspórica como espacio de Resignificación para las mujeres a partir de narrativas silenciadas, signos y símbolos plasmados en textiles.#SameePrendasConIdentidad#SameePrendasConIdentidadModaÉtnicaAfroAmazoníaColombiana#SameePrendasConIdentidadModaÉtnicaAfro1 recurso en línea (archivo
de texto)SAMEE is an enterprise of the fashion industry that was born with the purpose of generating income for women survivors of the armed conflict, contributing to the change of image of a historically stigmatized department and telling narratives of greatness of the black communities of Colombia. The diagnosis made it possible to identify the lack of job opportunities for women in Caquetá and the inexistence of social enterprises that promote racial justice and the visibility of the inter-ethnic confluence in the Colombian Amazon. Based on the diagnosis, the general objective was to implement a cultural management strategy from the Afro ethnic fashion, as a form of racial justice based on Afro-diasporic narratives for the generation of income for women survivors of the armed conflict, the construction of peace, and the social and economic development of the Colombian Amazon to achieve this, the company SAMEE Prendas con identidad SAS was created and formalized. The launch was carried out on May 21, Afro-Colombian day with the collection called Sounds of the Afro Diaspora in the Colombian Amazon. In addition, a two-way communication strategy was implemented, one for the positioning of the brand and another from the I buy Afro campaign. Some of the conclusions reached in the implementation of this initiative is that SAMEE as a social enterprise contributes to the expansion of Afro- diasporic cultural memory as a space of Resignification for women based on silenced narratives, signs and symbols embodied in textiles
The British Asian Option
No full textFollowing the economic rationale of [7] and [8] we present a new class of Asian options where the holder enjoys the early exercise feature of American options whereupon his payoff (deliverable immediately) is the ‘best prediction’ of the European payoff under the hypothesis that the true drift of the stock price equals a contract drift. Inherent in this is a protection feature which is key to the British Asian option. Should the option holder believe the true drift of the stock price to be unfavourable (based upon the observed price movements) he can substitute the true drift with the contract drift and minimise his losses. The practical implications of this protection feature are most remarkable as not only is the option holder afforded a unique protection against unfavourable stock price movements (covering the ability to sell in a liquid market completely endogenously) but also when the stock price movements are favourable he will generally receive high returns. We derive a closed form expression for the arbitrage-free price in terms of the rational exercise boundary and show that the rational exercise boundary itself can be characterised as the unique solution to a nonlinear integral equation. Using these results we perform a financial analysis of the British Asian option that leads to the conclusions above and shows that with the contract drift properly selected the British Asian option becomes a very attractive alternative to the classic (European) Asian option.British Asian option; American Asian option; European Asian option; fixed/floating strike; arithmetic/geometric average; flexible Asian options; arbitrage-free price; rational exercise boundary; liquid/illiquid market; geometric Brownian motion; the Shiryaev process; optimal stopping, parabolic free-boundary problem; nonlinear integral equation; local time-space calculus
Gall Stone Ileus and Recurrence: Management Dilemma for the Operating Surgeon.
No full textGallstone ileus (GSI) is a rare complication of gallstone disease. It occurs as a result of the passage of a stone from the biliary tract into the gastrointestinal tract via an abnormal pathway (bilio-enteric fistula). Chronic inflammatory processes result in gall bladder adhering and subsequently eroding into the intestines, leading to a fistula. It is a surgical emergency seen in the elderly who often present as being unwell, with abdominal pain, distension, and vomiting. Imaging such as a CT scan is diagnostic in confirming small bowel obstruction. Management usually involves relief of obstruction by removing the impacted gallstone. Despite surgical intervention, a small proportion of patients develop recurrent symptoms or recurrent gallstone ileus, usually within a few weeks of initial presentation. The recurrence of symptoms during index admission is extremely rare and can be challenging to diagnose and manage. The morbidity and mortality remain high in elderly patients. We report an 89-year-old patient who presented with small bowel obstruction. The CT scan confirmed gallstone ileus as a result of a stone impacted in the mid-small bowel. The patient had a laparotomy with extraction of the stone. No migrating stones were felt proximally. Five days postoperatively, he developed recurrent gallstone ileus confirmed on a CT scan and had to undergo another surgery to relieve the obstruction. We aim to investigate various management strategies for recurrent gallstone ileus, ranging from the commonly practiced approach of simple stone extraction to more definitive surgical interventions, including fistula repair, which may provide a more comprehensive solution. [Abstract copyright: Copyright © 2024, Samee et al.
Exploiting Multi-Objective Evolutionary Algorithms for Designing Energy-Efficient Solutions to Data Compression and Node Localization in Wireless Sensor Networks
No full textWireless sensor network (WSN) technology promises to have a high potential to tackle environmental challenges and to monitor and reduce energy and greenhouse gas emissions. Indeed, WSNs have already been successfully employed in applications such as intelligent buildings, smart grids and energy control systems, transportation and logistics, and precision agriculture. All these applications generally require the exchange of a large amount of data and the localization of the sensor nodes. Both these two tasks can be particularly energy-hungry. Since sensor nodes are typically powered by small batteries, appropriate energy saving strategies have to be employed so as to prolong the lifetime of the WSNs and to make their use attractive and effective. To this aim, the study of data compression algorithms suitable for the reduced storage and computational resources of a sensor node, and the exploration of node localization techniques aimed at estimating the positions of all sensor nodes of a WSN from the knowledge of the exact locations of a restricted number of these nodes, have attracted a large interest in the last years. In this chapter, we discuss how multi-objective evolutionary algorithms can successfully be exploited to generate energy-aware data compressors and to solve the node localization problem. Simulation results show that, in both the tasks, the solutions produced by the evolutionary processes outperform the most interesting approaches recently proposed in the literature
A recommendation system for allocating video resources in multiple partitions
No full textNo abstract available
Bounds for graph energy in terms of vertex covering and clique numbers
No full textLet G be a simple graph with n vertices, m edges and having adjacency eigenvalues λ1, λ2, …, λn. The energy E(G) of the graph G is defined as E(G) = ∑i = 1n∣λi∣. In this paper, we obtain the upper bounds for the energy E(G) in terms of the vertex covering number τ, the clique number ω, the number of edges m, maximum vertex degree d1 and second maximum vertex degree d2 of the connected graph G. These upper bounds improve some of the recently known upper bounds.</p
A RELIGIOUS HISTORY OF PAN-ASIANISM: SOUTH ASIA, JAPAN, AND ANTICOLONIAL INTERNATIONALISM
No full textIn this dissertation, I explore the significance of “religion” and “Asianness” in the ideas, ambitions, and relationships of a select group of anticolonial revolutionaries from India who used Japan as a base for their political projects between 1905 and 1945. Although my dissertation’s focus is on Indian anticolonial figures like Muhammad Barkatullah and Rash Behari Bose, not only do I explore their relationships with other Indian revolutionaries both inside and outside Japan, but I also put them in conversation with Ceylonese, Japanese, and Euro-American actors with whom they were in direct or indirect contact. I begin my dissertation with British imaginings of Asian religions and end with reflections of ‘Japanese Orientalists’ like Ōkawa Shūmei. In between, the dissertation introduces several Indian revolutionary colleagues and interlocutors, such as Har Dayal, V.D. Savarkar, M.N. Roy, and Aurobindo Ghose.I make two central arguments in my dissertation regarding the role of religion in the political projects of Pan-Asianists from India in Japan. First, I argue that a new conceptual understanding of religion gave Asia coherence in Pan-Asianist discourse and political organizing. Second, while South Asian and Japanese figures challenged many of the racialized assumptions of Euro-American thinkers about Asian religious traditions in their attempts to resist the British Empire, I argue that they were unable to escape a central component of Orientalist scholarship: the “problem of origins.” I use the “problem of origins” to refer to the notion that the essential core of religious traditions was to be found in a particular geographic place, race, and language through a study of sacred texts, early religious sites, and religious founding figures.Doctor of Philosoph
Realizing Accelerated Cost-Effective Distributed RAID
No full textThe exponential growth in user and application data entails new means for providing fault tolerance and protection against data loss. High Performance Com- puting (HPC) storage systems, which are at the forefront of handling the data del- uge, typically employ hardware RAID at the backend. However, such solutions are costly, do not ensure end-to-end data integrity, and can become a bottleneck during data reconstruction. In this paper, we design an innovative solution to achieve a flex- ible, fault-tolerant, and high-performance RAID-6 solution for a parallel file system (PFS). Our system utilizes low-cost, strategically placed GPUs — both on the client and server sides — to accelerate parity computation. In contrast to hardware-based approaches, we provide full control over the size, length and location of a RAID array on a per file basis, end-to-end data integrity checking, and parallelization of RAID array reconstruction. We have deployed our system in conjunction with the widely-used Lustre PFS, and show that our approach is feasible and imposes ac- ceptable overhead
New and renewable energy and environmental engineering
No full textThere is an acute scarcity of potable water in many parts of the world, and especially in most of the Middle East region. Important advances have been made in desalination technology but its wide application is restricted by relatively high capital and input energy costs, even when solar energy is used. Until recently, flat-plate solar collectors have usually been employed to distill water in compact desalination systems. Currently, it is possible to replace these collectors by the more advanced evacuated tube collectors, which are now available on the market at a similar price. The research which is concerned with the development of a novel small scale solar water desalination technology, consists of experimental and theoretical investigations of the operation of a multi stage solar still desalination system coupled with a heat pipe evacuated tube solar collector with an aperture area of about 1.7 m(^2). The multi stage still was tested to recover latent heat from the evaporation and condensation processes in each of its four stages. A number of experimental tests were carried out using a laboratory rig to investigate its water production capacity. Solar radiation (insolation) during a mid-summer day in the Middle East region was simulated by an array of 110 halogen flood lights. Computational Fluid Dynamics (CFD) modeling of the evaporation and condensation processes in one of the still's stages was conducted using FLUENT 6.2 software. The simulation results demonstrate the importance of the various parameters affecting the total production rate of the solar still and provide detailed information on the temperature distribution and condensate formation inside the solar still. However, it was found that the CFD technique at this stage does not provide accurate quantitative predictions and results obtained can be used only for qualitative analysis. Hence, the use of a lumped parameter mathematical model was preferred for analysis and design purpose. A lumped parameter model has been developed to describe the system's operation. It consists of a system of ordinary differential equations of energy and mass conservation written for each stage of the still. A MATLAB computer program was written to solve the system of governing equations to simulate the evaporation and condensation processes and the experimental results were used to validate numerical predictions. The experimental and theoretical values for the total daily distillate output were found to be closely correlated. The test results demonstrate that the system produces about 9 kg of clean water per day and has a distillation efficiency of 90%. The overall efficiency is 33% due to the presence of heat losses in the system. However, this level of efficiency is greater of that for conventional solar stills. Following the experimental calibration of the lumped parameter model, this was used for determination of rational design parameters of the still and it was demonstrated that the performance of the system could be considerably improved to produce 11 kg/m(^2) of water per day if the number of stages and evaporation area were 4 and 1 m(^2), respectively. A water quality analysis was performed for the distilled water and the levels of total dissolved solids, electrical conductivity and pH were well within the range defined by the World Health Organization guidelines for drinking water. An economic study was also conducted for the system and it was shown that the distilled water costs of 0.016 US$/litre with a payback period of 6 months in the Middle East region conditions. This research demonstrates, empirically and theoretically, the potential role in the field of solar desalination of the multistage solar still coupled to the evacuated tube solar collector. Not only is this system a promising new technology but it could prove to be particularly appropriate in remote and rural areas. Simultaneously this system also uses a completely clean energy source and contributes to tackling environmental pollution, global carbon emissions and climate change problems
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