The frame and field rates that have been used for television since the 1930s cause problems for m... more The frame and field rates that have been used for television since the 1930s cause problems for motion portrayal, which are increasingly evident on the large, high-resolution television displays that are now common. In this paper we report on a programme of experimental work that successfully demonstrated the advantages of higher frame rate capture and display as a means of improving the quality of television systems of all spatial resolutions. The greater realism of motion portrayal obtained at higher frame rates is required to present a truly immersive experience.
<title>Architecture for web-based image processing</title>
Proceedings of SPIE, Sep 19, 1997
A computer systems architecture for processing medical images and other data coming over the Web ... more A computer systems architecture for processing medical images and other data coming over the Web is proposed. The architecture comprises a Java engine for communicating images over the Internet, storing data in local memory, doing floating point calculations, and a coprocessor MIMD parallel DSP for doing fine-grained operations found in video, graphics, and image processing applications. The local memory is shared between the Java engine and the parallel DSP. Data coming from the Web is stored in the local memory. This approach avoids the frequent movement of image data between a host processor's memory and an image processor's memory, found in many image processing systems. A low-power and high performance parallel DSP architecture containing lots of processors interconnected by a segmented hierarchical network has been developed. The instruction set of the 16-bit processor supports video, graphics, and image processing calculations. Two's complement arithmetic, saturation arithmetic, and packed instructions are supported. Higher data precision such as 32-bit and 64-bit can be achieved by cascading processors. A VLSI chip implementation of the architecture containing 64 processors organized in 16 clusters and interconnected by a statically programmable hierarchical bus is in progress. The buses are segmentable by programming switches on the bus. The instruction memory of each processor has sixteen 40-bit words. Data streaming through the processor is manipulated by the instructions. Multiple operations can be performed in a single cycle in a processor. A low-power handshake protocol is used for synchronization between the sender and the receiver of data. Temporary storage for data and filter coefficients is provided in each chip. A 256 by 16 memory unit is included in each of the 16 clusters. The memory unit can be used as a delay line, FIFO, lookup table or random access memory. The architecture is scalable with technology. Portable multimedia terminals like U.C. Berkeley's InfoPad can be developed using the proposed parallel DSP architecture, color display, pen interface, and wireless network communication for use in clinics, hospitals, homes, offices, and factories.
The information contained in this publication is intended for general use to assist public knowledge and discussion and to help improve the development of sustainable regions. You must not rely on any information contained in this publication without taking specialist advice relevant to your part...
This document is intended to acquaint users of the Goddard Trajectory Determination System (GTDS)... more This document is intended to acquaint users of the Goddard Trajectory Determination System (GTDS) Solar/Lunar/Planetary (SLP) Ephemeris Files with the details connected with the generation and use of these files. In particular, Sections 2.2, 3 and 4, together with Appendices B through D, constitute a user's manual for the GTDS SLP Ephemeris Files.
PWE-100 Missed Rates of Colorectal Cancer - Diagnostic Limitations
Gut, Jun 1, 2016
Introduction Colorectal cancer is the fourth most common cancer in the UK and the second leading ... more Introduction Colorectal cancer is the fourth most common cancer in the UK and the second leading cause of cancer related deaths. Missed colorectal cancer may delay diagnosis and treatment and lead to worse disease outcome. Colonoscopy is considered the gold standard in diagnosis of colorectal cancer but increasing numbers of computed tomography (CT) scans are performed as a less invasive alternative. Other cross-sectional modalities are also used to examine the abdomen.Our aim was to determine the rate of missed colorectal cancers at initial investigation (endoscopy or CT) amongst patients subsequently diagnosed with colorectal cancer in 2014. Methods We identified all colorectal cancer diagnoses made in 2014 by interrogating the histopathology system. Review of the electronic records detected any endoscopic investigations or cross sectional imaging in the 2 years before diagnosis. All CT imaging within 2 years of diagnosis was reviewed by a consultant gastrointestinal radiologist. Results There were 226 diagnoses of colorectal cancer in 2014. 3 patients had a colonoscopy within 2 years of diagnosis which did not demonstrate the lesion, ie 3 interval cancers. Median delay to diagnosis was 18 months. All 3 were right sided cancers. 11 patients underwent cross-sectional imaging in the 2 years prior to diagnosis which did not reveal the lesion, of whom 8 had multiple scans. Median delay to diagnosis was 9 months.No patients developed an interval cancer following a CTC. Conclusion CT is not a reliable investigation to rule out colonic malignancy and clinicians may be falsely reassured by a negative result. We suggest that all patients in whom Colorectal cancer is suspected should be investigated when appropriate using either endoscopy or CTC, regardless of any other recent imaging. References 1 Bowel Cancer Key Stats. Cancer Research UK, Nov 2014. www.cruk.org/cancerstats 2 http://nww.irefer.nhs.uk/adult/#Tpc39, accessed 11/7/15. 3 Leaper M, et al. Reasons for failure to diagnose colorectal carcinoma at colonoscopy. Endoscopy 2004;36:499–503. 4 Bessler, et al. Rates of new or missed colorectal cancers after colonoscopy and their risk factors: a population based analysis. Gastroenterology 2007;132:96–102. 5 Guidelines for colorectal cancer screening and surveillance in moderate and high risk groups (update from 2002). Gut 2010;59:669–690. 6 Laiyemo AO, et al. Liklihood of missed and recurrent adenomas in the proximal versus the distal colon. Gastrointest Endosc 2011;74:253–261 7 Patai, et al. Serrated pathway; alternative route to colorectal cancer. World Journal of Gastroenteroloy 2013;19(5); 607–615. 8 Brenner, et al. Protection from Right- and Left-sided colorectal neoplasms after colonoscopy: Population-based study. Journal of the National Cancer Institute 2010;102(2):89–95. Disclosure of Interest None Declared
Introduction Currently there are no established treatment options for fatty liver disease. Glucag... more Introduction Currently there are no established treatment options for fatty liver disease. Glucagon-like peptide 1 (GLP-1) analogues have been shown to reduce hepatic steatosis and markers of liver inflammation in rodents. Aim To determine the efficacy of 2 years treatment with 1.8 mg liraglutide, a once-daily human GLP-1 analogue, on fatty liver disease and body composition in patients with poorly controlled type 2 diabetes (T2D). Method Analysis was performed on the “Liraglutide Effect and Action in Diabetes-2” (LEAD-2) study cohort. LEAD-2 was a 26-week, double blind phase III trial with a 1.5-year open-label extension. Patients were randomised (2:2:2:2:1) to liraglutide 1.8, 1.2 or 0.6 mg/day, glimepiride 4 mg/day or placebo, all in combination with metformin 1.5–2 g/day. DEXA (n=160) and computerised tomography (CT) (n=154) sub-studies were performed to measure body fat composition and hepatic steatosis (defined by a liver-to-spleen attenuation ratio <1), respectively. Repea...
The frame and field rates that have been used for television since the 1930s cause problems for m... more The frame and field rates that have been used for television since the 1930s cause problems for motion portrayal, which are increasingly evident on the large, high-resolution television displays that are now common. This paper reports on a program of experimental work that ...
The Grove City College Competitive Pool is one of the nation's top small-college aquatic faciliti... more The Grove City College Competitive Pool is one of the nation's top small-college aquatic facilities. The 8-lane facility is regarded as one of the fastest pools in the region and is reserved solely for use by the College's swimming and diving and water polo athletes. The Grove City College Pool features two one-meter diving boards and one three-meter board as well as five Power Rack stations. An eight-lane electronic Colorado Timing System is integrated into the pool and scoreboard. The scoreboard features eight lines for results, three lines for event/heat and scoring and a scrolling line that shows laneby-lane results. The shallow end of the Pool is seven feet; thus the Grove City College Pool is able to host several Collegiate Water Polo Association events that are restricted from "shallow-deep" pools. Since 2000, Grove City College has hosted several CWPA championship events. The Grove City College Pool is 25 yards in length and 56 feet wide. It holds 408,913 gallons of water. The seating capacity of the Pool area is approximately 400. The Pool has been home to the Presidents' Athletic Conference Swimming and Diving Championships since 1990.
Smartphones/devices have become the ubiquitous tool of choice for professionals to support their ... more Smartphones/devices have become the ubiquitous tool of choice for professionals to support their productivity and are increasingly becoming more common on university campuses. Many of the advantages of these devices have the potential to support student learning engagement and provide new opportunities for learning. This paper reports on an academic study conducted over the last two years by two final year students, supported by two academic learning technology researchers, examining the level of student smartphone/device ownership on campus and the extent students are harnessed the use of these devices to support their learning. The research shows that student smartphone/device ownership is increasing; however, how students are using the devices to support their learning appears to narrowing as the year progresses and consequently the students are missing out on the learning opportunities these devices can provide. The paper finally presents an analysis of smartphone/device apps th...
AG2 - Clay deposit removal from membranes Extract from the paper "Cleaning Clay from fouled membranes", to be presented at Euromed 2008, Jordan Desalination Cooperation among Mediterranean countries of Europe & the MENA region, 9-13 November 2008
Genesys membrane laboratories in Madrid show that the majority of deposits found on reverse osmos... more Genesys membrane laboratories in Madrid show that the majority of deposits found on reverse osmosis membranes are clay based aluminosilicates .These deposits are difficult to remove with traditional cleaning chemicals, Genesol 703 is a speciality membrane cleaning chemical designed to effectively remove these and other deposits reducing membrane cleaning frequency and associated costs. Results of cleaning trials on actual membranes are presented. Membrane clay deposits Within the lifetime of most reverse osmosis (RO) systems some fouling will adversely affect membrane performance with the nature of the foulant generally being determined through membrane autopsy. Autopsy results show that the major constituents of these deposits are aluminosilicates or clays. Clay minerals are generally categorized as being <2µm in size and are formed by the gradual chemical weathering of silica bearing rocks which over time are transported into natural water sources and will therefore occur in al...
This section describes the four major sections of the class as well as the theoretical framework ... more This section describes the four major sections of the class as well as the theoretical framework that guided our decisions throughout the process. Course Outline The design of the class consists of four major sections: (1) introduction to the library, (2) the group activity, (3) final presentations and (4) a reflection discussion. Adjustments Made We addressed these concepts through a variety of adjustments in each of the sections of the activity.
Fifty years after the commercialisation and widespread use of membranes for water treatment the b... more Fifty years after the commercialisation and widespread use of membranes for water treatment the biggest single unresolved operational issue is fouling. The topic is well researched and the major components of fouling have been identified. There have been fewer studies on complex foulants which contain multiple components including metals. The metals present in the feed water to the membranes come from various sources. They can be dissolved or as a suspension in the originating body of sea water, well water or surface water. Metal impurities can be present as a direct result of chemical addition of coagulants and pH control chemicals and as a by-product of corrosion. Multi component foulants with metals are very difficult to remove and require multiple cleaning procedures at varying pH. The extremes of acid and alkaline conditions can have a detrimental effect on the membrane reducing lifespan and salt rejection. The authors have conducted over 1200 membrane autopsies in the last dec...
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