Quantitative measurement of pseudoexfoliation in the anterior segment of the eye performed in visible light

Introduction: Pseudoexfoliation syndrome (PEX) is a systemic disease involving the accumulation of pathological material deposits in the tissues of the anterior segment of the eye. The problem of modern ophthalmology is a quantitative assessment of the severity of PEX in the diagnosis and evaluation of the treatment progress in patients.Material and method: For the purposes of this study, 52 images of the anterior segment of the eye with the resolution of M × N = 1280 × 960 pixels were obtained in jpg format using the slit lamp CSO 450-SL. The patients were aged 50-80 and were recruited from Poland. All patients who participated in the study provided written informed consent after explanation of the nature and possible consequences of the study. The image analysis method proposed by the authors contains the calculation of the direction field, setting a straight perpendicular line passing through each pixel of the edge of the pupil, the calculation of the intersection of straight lines in order to determine the central point of the pupil position, the detection of the contour of PEX and the outer border of the iris with the use of the polar coordinate system. All analyzed parameters were set automatically with one exception parameter chosen manually depending on the slit lamp type.Results: A fully automatic measurement of PEX was carried out with the proposed method. Quantitative results enable to perform reproducible tests independently of the research centre. Owing to the image analysis method proposed by the authors, it is possible to obtain results in no more than 1 second on the Intel Core 2 Quad CPU 2.50 GHz with a measurement error below 3%. Other known methods of image analysis and processing that are compared in this paper give results with a greater error (4-35%) which depends on the degree of magnification (×6, ×16, ×20) and are not fully automatic.Conclusions: The methods of image analysis and processing enable a quantitative, repeatable and automatic measurement of the severity and progress of PEX syndrome. They support medical diagnosis and automatic archiving of results

Mobile sailing robot for automatic estimation of fish density and monitoring water quality

Introduction: The paper presents the methodology and the algorithm developed to analyze sonar images focused on fish detection in small water bodies and measurement of their parameters: volume, depth and the GPS location. The final results are stored in a table and can be exported to any numerical environment for further analysis.Material and method: The measurement method for estimating the number of fish using the automatic robot is based on a sequential calculation of the number of occurrences of fish on the set trajectory. The data analysis from the sonar concerned automatic recognition of fish using the methods of image analysis and processing.Results: Image analysis algorithm, a mobile robot together with its control in the 2.4 GHz band and full cryptographic communication with the data archiving station was developed as part of this study. For the three model fish ponds where verification of fish catches was carried out (548, 171 and 226 individuals), the measurement error for the described method was not exceeded 8%.Summary: Created robot together with the developed software has features for remote work also in the variety of harsh weather and environmental conditions, is fully automated and can be remotely controlled using Internet. Designed system enables fish spatial location (GPS coordinates and the depth). The purpose of the robot is a non-invasive measurement of the number of fish in water reservoirs and a measurement of the quality of drinking water consumed by humans, especially in situations where local sources of pollution could have a significant impact on the quality of water collected for water treatment for people and when getting to these places is difficult. The systematically used robot equipped with the appropriate sensors, can be part of early warning system against the pollution of water used by humans (drinking water, natural swimming pools) which can be dangerous for their health

The Transatlantic Sixties

This collection brings together new and original critical essays by eleven established European American Studies scholars to explore the 1960s from a transatlantic perspective. Intended for an academic audience interested in globalized American studies, it examines topics ranging from the impact of the American civil rights movement in Germany, France and Wales, through the transatlantic dimensions of feminism and the counterculture movement. It explores, for example, the vicissitudes of Europe's status in US foreign relations, European documentaries about the Vietnam War, transatlantic trends in literature and culture, and the significance of collective and cultural memory of the era

Across Space and Time. Papers from the 41st Conference on Computer Applications and Quantitative Methods in Archaeology, Perth, 25-28 March 2013

This volume presents a selection of the best papers presented at the forty-first annual Conference on Computer Applications and Quantitative Methods in Archaeology. The theme for the conference was "Across Space and Time", and the papers explore a multitude of topics related to that concept, including databases, the semantic Web, geographical information systems, data collection and management, and more

Across Space and Time Papers from the 41st Conference on Computer Applications and Quantitative Methods in Archaeology, Perth, 25-28 March 2013

The present volume includes 50 selected peer-reviewed papers presented at the 41st Computer Applications and Quantitative Methods in Archaeology Across Space and Time (CAA2013) conference held in Perth (Western Australia) in March 2013 at the University Club of Western Australia and hosted by the recently established CAA Australia National Chapter. It also hosts a paper presented at the 40th Computer Applications and Quantitative Methods in Archaeology (CAA2012) conference held in Southampton

Understanding Quantum Technologies 2022

Understanding Quantum Technologies 2022 is a creative-commons ebook that provides a unique 360 degrees overview of quantum technologies from science and technology to geopolitical and societal issues. It covers quantum physics history, quantum physics 101, gate-based quantum computing, quantum computing engineering (including quantum error corrections and quantum computing energetics), quantum computing hardware (all qubit types, including quantum annealing and quantum simulation paradigms, history, science, research, implementation and vendors), quantum enabling technologies (cryogenics, control electronics, photonics, components fabs, raw materials), quantum computing algorithms, software development tools and use cases, unconventional computing (potential alternatives to quantum and classical computing), quantum telecommunications and cryptography, quantum sensing, quantum technologies around the world, quantum technologies societal impact and even quantum fake sciences. The main audience are computer science engineers, developers and IT specialists as well as quantum scientists and students who want to acquire a global view of how quantum technologies work, and particularly quantum computing. This version is an extensive update to the 2021 edition published in October 2021.Comment: 1132 pages, 920 figures, Letter forma

Crime and its Control in the People's Republic of China

The Centre for Criminology at the University of Hong Kong was established in 1999 to provide a home for indigenous studies of crime and criminal justice in Hong Kong and the region. As part of this objective it sought to provide a platform for both academics and practitioners to share their knowledge and to assist in the development of effective strategies to deal with the increasingly sophisticated problem of crime. The annual symposium on 'Crime and its Control in Greater China' functions as a forum to discuss interdisciplinary research on crime relevant to Greater China. The various components of Greater China have common cultural, linguistic and economic bonds that give rise to some similar crime problems and opportunities to resolve them. Therefore it seemed appropriate that both scholars and practitioners from Mainland China, Hong Kong, Macau and Taiwan should meet to discuss their research on these issues. In the furtherance of these objectives it has been gratifying that the Chinese Peoples' Public Security University has participated in these events and co-hosted the 3rd Symposium. They also organised a Symposium in Beijing in 2002 to discuss ‘Criminal Trends and Countermeasures’and invited the Centre for Criminology to co-host, that event. This is the type of synergy that our annual event aspires to generate. A conscious intention of the annual symposium is to be broad in terms of both the range of topics covered and the depth of experience of the speakers. For this reason the symposium has provided a platform for postgraduate students to introduce their research as well as for well-established scholars with an international reputation for excellence in their chosen area of research. To further the concept of providing a bridge between academia and practice, several speakers are usually invited from the private sector to present their views on the problems and issues that concern them. These proceedings provide a record of selected papers presented at the various symposia and demonstrate the wide variety of topics covered and interests of speakers. I hope this bilingual event will help to fill the need that exists for a joint effort to review and discuss developments in criminology relevant to Greater China