Browsing University of Hertfordshire by Title
Now showing items 10910-10929 of 24147
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Improved detection of Probe Request Attacks : Using Neural Networks and Genetic Algorithm
(SciTePress, 2012-10-24)The Media Access Control (MAC) layer of the wireless protocol, Institute of Electrical and Electronics Engineers (IEEE) 802.11, is based on the exchange of request and response messages. Probe Request Flooding Attacks ... -
Improved dynamic cutting force model in ball end milling - Part 1 : Theoretical modelling and experimental callibration
(2005)An accurate cutting force model of ball-end milling is essential for precision prediction and compensation of tool deflection that dominantly determines the dimensional accuracy of the machined surface. This paper presents ... -
Improved dynamic cutting force model in peripheral milling - Part 2 : experimental verification and prediction
(2004)Cutting trials reveal that a measure of cutter run-out is always unavoidable in peripheral milling. This paper improves and extends the dynamic cutting force model of peripheral milling based on the theoretical analytical ... -
Improved early detection of ovarian cancer using longitudinal multimarker models
(2020-03-17)Background: Ovarian cancer has a poor survival rate due to late diagnosis and improved methods are needed for its early detection. Our primary objective was to identify and incorporate additional biomarkers into longitudinal ... -
Improved fatigue and damage tolerant material design for aerospace industry
(2005-11-01)Various micro-mechanical and micro-structural influences on fatigue crack growth resistance of the material have been investigated over the years. It is widely recognized that resistance to fatigue crack growth can be ... -
Improved identification of the solution space of aerosol microphysical properties derived from the inversion of profiles of lidar optical data, part 1: theory
(2016-11-30)Multiwavelength Raman/high spectral resolution lidars that measure backscatter coefficients at 355, 532, and 1064 nm and extinction coefficients at 355 and 532 nm can be used for the retrieval of particle microphysical ... -
Improved identification of the solution space of aerosol microphysical properties derived from the inversion of profiles of lidar optical data, part 2: Simulations with synthetic optical data
(2016-11-30)We developed a mathematical scheme that allows us to improve retrieval products obtained from the inversion of multiwavelength Raman/HSRL lidar data, commonly dubbed “3 backscatter 2 extinction” (3β 2α) lidar. This scheme ... -
Improved identification of the solution space of aerosol microphysical properties derived from the inversion of profiles of lidar optical data, part 3: Case studies
(2018-03-27)We conclude our series of publications on the development of the gradient correlation method (GCM) which can be used for an improved stabilization of the solution space of particle microphysical parameters derived from ... -
An improved indicator framework to assess and optimise ecosystem services provided by permanent grasslands
(2023-02-28)Livestock farming systems are criticised for their environmental impacts, but they can also provide various ecosystem services to society, especially permanent grasslands. This study aimed to develop a method to assess ... -
Improved isolation and culture methods for cucumber mesophyll protoplasts
(1977-05-01)Improved methods for the isolation of large numbers of viable protoplasts from cotyledons and first leaves of two cultivars of cucumber, Cucumis sativus L. cv. Ashley and China are described. Short-term isolation methods ... -
Improved lead and bismuth (n,gamma) cross sections and their astrophysical impact
(EDP Sciences, 2008)A series of (n,gamma) neutron capture measurements on the lead isotopes and bismuth have been carried Out at the CERN n_TOF installation in the neutron energy range from 1 eV up to 1 MeV. At n_TOF, contaminations due to ... -
An improved low cost apparatus and method for the detection of a fluid-borne particle
(2012-05-03)An apparatus for the detection of a fluid-borne particle (10) in an optically defined particle sensing zone, the apparatus comprising: i) a scattering chamber (40); ii) a means for providing a sample of fluid (34), containing ... -
An Improved Modeling for Low-grade Organic Rankine Cycle Coupled with Optimization Design of Radial-inflow Turbine
(2017-12-01)Organic Rankine cycle (ORC) has been proven to be an effective and promising technology to convert low-grade heat energy into power, attracting rapidly growing interest in recent years. As the key component of the ORC ... -
Improved multimedia server I/O subsystems
(Institute of Electrical and Electronics Engineers (IEEE), 1998)The main function of a continuous media server is to concurrently stream data from storage to multiple clients over a network. The resulting streams will congest the host CPU bus, reducing access to the system's main memory, ... -
Improved number plate character segmentation algorithm and its efficient FPGA implementation
(2015-03)Character segmentation is an important stage in Automatic Number Plate Recognition systems as good character separation leads to a high recognition rate. This paper presents an improved character segmentation algorithm ... -
Improved number plate localisation algorithm and its efficient field programmable gate arrays implementation
(2013-03)Number plate localisation is a very important stage in an Automatic Number Plate Recognition (ANPR) system and is computationally intensive. This paper presents a low complexity with high detection rate number plate ...