The Distribution of plasma and other cells containing immunoglobin in the respiratory tract of normal man, and the alterations found in subjects with chronic bronchitis

Imperial Users onl

Accelerated Neural Networks on OpenCL Devices Using SYCL-DNN

Over the past few years machine learning has seen a renewed explosion of interest, following a number of studies showing the effectiveness of neural networks in a range of tasks which had previously been considered incredibly hard. Neural networks' effectiveness in the fields of image recognition and natural language processing stems primarily from the vast amounts of data available to companies and researchers, coupled with the huge amounts of compute power available in modern accelerators such as GPUs, FPGAs and ASICs. There are a number of approaches available to developers for utilizing GPGPU technologies such as SYCL, OpenCL and CUDA, however many applications require the same low level mathematical routines. Libraries dedicated to accelerating these common routines allow developers to easily make full use of the available hardware without requiring low level knowledge of the hardware themselves, however such libraries are often provided by hardware manufacturers for specific hardware such as cuDNN for Nvidia hardware or MIOpen for AMD hardware. SYCL-DNN is a new open-source library dedicated to providing accelerated routines for neural network operations which are hardware and vendor agnostic. Built on top of the SYCL open standard and written entirely in standard C++, SYCL-DNN allows a user to easily accelerate neural network code for a wide range of hardware using a modern C++ interface. The library is tested on AMD's OpenCL for GPU, Intel's OpenCL for CPU and GPU, ARM's OpenCL for Mali GPUs as well as ComputeAorta's OpenCL for R-Car CV engine and host CPU. In this talk we will present performance figures for SYCL-DNN on this range of hardware, and discuss how high performance was achieved on such a varied set of accelerators with such different hardware features.Comment: 4 pages, 3 figures. In International Workshop on OpenCL (IWOCL '19), May 13-15, 2019, Bosto

On the trail of interannual variability in phytoplankton and climate [abstract and figures]

EXTRACT (SEE PDF FOR FULL ABSTRACT): A selective but nontheless real record of phytoplankton activity over the Santa Barbara Basin can be obtained from the underlying varved sediments. The phytoplankton groups preserved are: diatoms (frustrules and spores), silicoflagellates, dinoflagellates (cysts) and coccoliths

The Political Economy of the African Continental Free Trade Area (AfCFTA): A Policy Analysis of the Prospects and Challenges

This dissertation offers a policy analysis of the African Continental Free Trade Area (AfCFTA). The analysis aims to assess the prospects and challenges for implementation of the AfCFTA, and thereby to contribute to research on trade and regional integration in Africa and International Political Economy (IPE) theory testing. Throughout, emphasis is placed on the critical importance of both economic and political aspects of regional integration, which are often de-emphasised in conventional theoretical standpoints. The analysis highlights the need to avoid pursuing solely economic or political policy implementation and integration in order to achieve successful outcomes from the AfCFTA. Quintessential debates in regional theory are outlined. An analysis of the Eurocentric founding literature is undertaken, from which the origins of the false distinction between the state and the market in regional integration literature is identified. In the wake of the deficient explanatory capacity of European integration theories for African regionalism, alternate and more contemporary theoretical approaches are outlined, drawing from literature focussing on theories of new regionalism and the historical development of African regionalism. The slowing of regional integration globally, as well as the limited success of several aspects of Africa's overlapping Regional Economic Communities suggest that economic integration can only be sustained in environments where active political participation co-functions with successfully managed market integration. Thus, a political economy approach to the analysis and implementation of the AfCFTA is emphasised, in order to ensure both states and markets are incorporated into the regional integration literature. Research methods utilised include a review of regional integration literature, analysis of relevant macroeconomic data relating to international trade in Africa, a review of AfCFTA legal and policy documents, as well as situating the study within the wider theoretical body of regional integration literature and IPE. The analysis showed that despite critical challenges relating to implementation and coordination, the AfCFTA has significant potential benefits. It is concluded that a political economy approach to implementation would enhance the longterm prospects for regional integration in Africa and the AfCFTA specifically, by ensuring stakeholders in the political and economic spheres link their goals and methods of implementation to formulate long-term institutions for growth

Looking at a Values Research Program

Professor Soutar\u27s presentation outlines preliminary results from a long term research program focused on values

Papel de las Diacilglicerol Quinasas en la regulación de la respuesta inmune

Tesis doctoral inédita leída en la Universidad Autónoma de Madrid. Facultad de Ciencias, Departamento de Biología Molecular. Fecha de lectura: 21-06-201

Studies on sulphuric esters of carbohydrates

A great many polysaccharides are known to occur in nature in the form of sulphuric acid esters. To give but two classes of such compounds we have (a) some of the gel-forming carbohydrates from various algae, particularly marine algae. (b) many of the gluco-proteins are protein derivatives of complex substances which are essentially sulphuric acid esters.In the former class the sulphuric acid ester is usually soluble and can be extracted from the algae by treatment with cold or hot water. In some cases extraction is carried out by cold dilute acids or by cold dilute alkali.Only a few of these gel-forming carbohydrates have been subjected to any detailed investigations. In the few cases that have been the subject of re search the results are of an extremely vague nature and rather inconclusive due to the experimental difficulties involved