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  • 1
    Unknown
    Sebastopol, CA : O'Reilly
    Call number: D170:15 ; W190:10
    Keywords: Electronic data processing ; Database management ; Information Science ; Command languages (Computer science)
    Abstract: Discusses more than 80 command-line tools to obtain, scrub, explore, and model data
    Notes: Subtitle on cover: Facing the future with time-tested tools.
    Pages: xvii, 191 pages : illustrations
    Edition: First edition.
    ISBN: 9781491947852
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    D170:15 departmental collection or stack – please contact the library
    W190:10 departmental collection or stack – please contact the library
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  • 2
    Unknown
    New York, N.Y. : Springer Science+Business Media
    Call number: A190:1
    Keywords: Semaphorins / physiology ; Intercellular Signaling Peptides and Proteins / physiology ; Receptors, Cell Surface / physiology
    Description / Table of Contents: The CRMP family of proteins and their role in Sema3A signaling / Eric F. Schmidt and Stephen M. Strittmatter -- GTPases in semaphorin signaling / Andreas W. Püschel -- Intracellular kinases in semaphorin signaling / Aminul Ahmed and Britta J. Eickholt -- Mical flavoprotein monooxygenases: structure, function, and role in semaphorin signaling / Sharon M. Kolk and R. Jeroen Pasterkamp -- Signaling of secreted semaphorins in growth cone steering / Sangwoo Shim and Guo-li Ming -- Modulation of semaphorin signaling by IG superfamily cell adhesion molecules / Ahmad Bechara ... [et al.] -- Proteoglycans as modulators of axon guidance cue function / Joris de Wit and Joost Verhaagen -- Semaphorin signals in cell adhesion and cell migration: functional role and molecular mechanisms / Andrea Casazza, Pietro Fazzari, and Luca Tamagnone -- Semaphorin signaling during cardiac development / Toshihiko Toyofuku and Hitoshi Kikutani -- Semaphorin signaling in vascular and tumor biology / Gera Neufeld ... [et al.] -- Semaphorin signaling in the immune system / Vincent Potiron ... [et al.]
    Pages: xiv, 147 p. : ill., port.
    ISBN: 9780387709550
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    A190:1 departmental collection or stack – please contact the library
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  • 3
    Keywords: Medicine ; Practice of medicine ; Cardiology ; Heart / Surgery ; Medicine & Public Health ; Cardiology ; Health Promotion and Disease Prevention ; Health Administration ; Cardiac Surgery ; Springer eBooks
    Pages: : digital
    ISBN: 9781908517319
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  • 4
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The intestinal epithelium is the most rapidly self-renewing tissue in adult mammals. It is currently believed that four to six crypt stem cells reside at the +4 position immediately above the Paneth cells in the small intestine; colon stem cells remain undefined. Lgr5 ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 438 (2005), S. 283-284 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Throughout human history, people in regions all over the world have learnt, mostly by trial and error, to cope with extreme-climate events. Based on limited climatic and hydrological data from past events, countries have developed infrastructure and legislation to protect people from floods and ...
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2018-01-24
    Description: Sensors, Vol. 18, Pages 325: Performance Evaluation of IEEE 802.11ah Networks With High-Throughput Bidirectional Traffic Sensors doi: 10.3390/s18020325 Authors: Amina Šljivo Dwight Kerkhove Le Tian Jeroen Famaey Adrian Munteanu Ingrid Moerman Jeroen Hoebeke Eli De Poorter So far, existing sub-GHz wireless communication technologies focused on low-bandwidth, long-range communication with large numbers of constrained devices. Although these characteristics are fine for many Internet of Things (IoT) applications, more demanding application requirements could not be met and legacy Internet technologies such as Transmission Control Protocol/Internet Protocol (TCP/IP) could not be used. This has changed with the advent of the new IEEE 802.11ah Wi-Fi standard, which is much more suitable for reliable bidirectional communication and high-throughput applications over a wide area (up to 1 km). The standard offers great possibilities for network performance optimization through a number of physical- and link-layer configurable features. However, given that the optimal configuration parameters depend on traffic patterns, the standard does not dictate how to determine them. Such a large number of configuration options can lead to sub-optimal or even incorrect configurations. Therefore, we investigated how two key mechanisms, Restricted Access Window (RAW) grouping and Traffic Indication Map (TIM) segmentation, influence scalability, throughput, latency and energy efficiency in the presence of bidirectional TCP/IP traffic. We considered both high-throughput video streaming traffic and large-scale reliable sensing traffic and investigated TCP behavior in both scenarios when the link layer introduces long delays. This article presents the relations between attainable throughput per station and attainable number of stations, as well as the influence of RAW, TIM and TCP parameters on both. We found that up to 20 continuously streaming IP-cameras can be reliably connected via IEEE 802.11ah with a maximum average data rate of 160 kbps, whereas 10 IP-cameras can achieve average data rates of up to 255 kbps over 200 m. Up to 6960 stations transmitting every 60 s can be connected over 1 km with no lost packets. The presented results enable the fine tuning of RAW and TIM parameters for throughput-demanding reliable applications (i.e., video streaming, firmware updates) on one hand, and very dense low-throughput reliable networks with bidirectional traffic on the other hand.
    Electronic ISSN: 1424-8220
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Published by MDPI Publishing
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  • 7
    ISSN: 1432-1106
    Keywords: Head movements ; Visuomotor coordination ; Saccadic eye movement ; Latencies ; Human
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We compared the head movements accompanying gaze shifts while our subjects executed different manual operations, requiring gaze shifts of about 30°. The different tasks yielded different latencies between gaze shifts and hand movements, and different maximum velocities of the hand. These changes in eye-hand coordination had a clear effect on eye-head coordination: the latencies and maximum velocities of head and hand were correlated. The same correlation between movements of the head and hand was also found within a task. Therefore, the changes in eye-head coordination are not caused by changes in the strategy of the subjects. We conclude that head movements and saccades during gaze shifts are not based on the same command: head movements depend both on the actual saccade and on possible future gaze shifts.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1106
    Keywords: Motor control ; Visual pathways ; Illusions ; Prehension ; Human
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Reaching out for an object is often described as consisting of two components that are based on different visual information. Information on the object's position and orientation guides the hand to the object, while information on the object's shape and size determines how the fingers move relative to the thumb to grasp it. We propose an alternative description, which consists of determining suitable positions on the object — on the basis of its shape, surface texture, and so on — and then moving one's thumb and fingers to these positions. This could lead to the same performance without requiring distinct visual information on the object's orientation or size. If so, an illusory change in size need not influence the distance between thumb and fingers when reaching out for an object. However, as the object's size is used to estimate its weight, the illusory change in size should influence the force that is exerted to lift the object. To find out whether this is so, eight subjects were asked to pick up brass disks from a fixed position straight in front of them. The illusory change in size was brought about by presenting five converging lines in two different configurations under the disks. As predicted, the illusion influenced the force used to lift the disks, but not the distance between the subjects' thumbs and fingers when reaching for the disks.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1106
    Keywords: Key words Motor control ; Velocity ; Acceleration Arm movement ; Vision ; Human
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Previous studies on how we hit moving targets have revealed that the direction in which we move our hand is continuously adjusted on the basis of the target’s perceived position, with a delay of about 110 ms. In the present study we show that the acceleration of the hand is also under such continuous control. Subjects were instructed to hit moving targets (running spiders) as quickly as possible with a rod. We found that changing the velocity of the target influenced the speed with which the rod was moved. The influence was noticeable about 200 ms after the target’s velocity changed. The extent of the influence was consistent with a direct dependence of the acceleration of the hand on the target’s velocity. We conclude that the acceleration of the hand is continuously adjusted on the basis of the speed of the target, with a delay of about 200 ms.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract. Polycystin-1 is the protein product of the PKD1 gene. Mutations in this gene are responsible for most cases of polycystic kidney disease, but little is known about how these mutations lead to the development of cysts. Indeed, even less is known about the normal role of polycystin-1 in the kidney. The cellular localization of polycystin-1 has been the subject of intense investigation by many groups, including ours. In this report we describe our results and compare our data with those of others. We generated 14 different polyclonal antisera against fragments of the predicted 462-kDa polycystin-1 molecule to enable us to investigate the expression of polycystin-1 in cells and tissues by immunocytochemistry, western blotting, and immunoprecipitation. Our antibodies readily recognized a 134-kDa polycystin-1 fragment overexpressed in COS cells and stained the epithelial cells of fetal, adult, and cystic kidney sections with the same pattern as reported by others. However, further investigations revealed that this pattern was not specific for polycystin-1. We could not unequivocally detect polycystin-1 in vivo, either by immunoblotting or immunocytochemistry. Therefore our studies do not support the reported pattern of polycystin-1 expression in the kidney.
    Type of Medium: Electronic Resource
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