A good time for electromagnetics: Merging microwave with optical engineering

2019 ◽  
Vol 61 (2) ◽  
pp. 291-291
Author(s):  
Wenquan Che
Keyword(s):  
Good Time ◽  
Optical Engineering

Evaluation of the effectiveness of different image skeletonization methods in biometric security systems

2020 ◽  
Vol 10 ◽  
Author(s):  
Mariya Nazarkevych ◽  
Serhii Dmytruk ◽  
Volodymyr Hrytsyk ◽  
Olha Vozna ◽  
Anzhela Kuza ◽  
...  
Keyword(s):  
Experimental Studies ◽  
Fingerprint Recognition ◽  
Good Time ◽  
Gabor Filtering ◽  
Security Systems ◽  
Thinning Algorithm ◽  
Biometric Security ◽  
Recognition Quality ◽  
Control And Management ◽  
The Internet Of Things

Background: Systems of the Internet of Things are actively implementing biometric systems. For fast and high-quality recognition in sensory biometric control and management systems, skeletonization methods are used at the stage of fingerprint recognition. The analysis of the known skeletonization methods of Zhang-Suen, Hilditch, Ateb-Gabor with the wave skeletonization method has been carried out and it shows a good time and qualitative recognition results. Methods: The methods of Zhang-Suen, Hildich and thinning algorithm based on Ateb-Gabor filtration, which form the skeletons of biometric fingerprint images, are considered. The proposed thinning algorithm based on Ateb-Gabor filtration showed better efficiency because it is based on the best type of filtering, which is both a combination of the classic Gabor function and the harmonic Ateb function. The combination of this type of filtration makes it possible to more accurately form the surroundings where the skeleton is formed. Results: Along with the known ones, a new Ateb-Gabor filtering algorithm with the wave skeletonization method has been developed, the recognition results of which have better quality, which allows to increase the recognition quality from 3 to 10%. Conclusion: The Zhang-Suen algorithm is a 2-way algorithm, so for each iteration, it performs two sets of checks during which pixels are removed from the image. Zhang-Suen's algorithm works on a plot of black pixels with eight neighbors. This means that the pixels found along the edges of the image are not analyzed. Hilditch thinning algorithm occurs in several passages, where the algorithm checks all pixels and decides whether to replace a pixel from black to white if certain conditions are satisfied. This Ateb-Gabor filtering will provide better performance, as it allows to obtain more hollow shapes, organize a larger range of curves. Numerous experimental studies confirm the effectiveness of the proposed method.

Hawks and Doves in the Education of Aboriginal Children

1982 ◽  
Vol 10 (4) ◽  
pp. 50-55
Author(s):  
P. Degens
Keyword(s):  
Secondary School ◽  
Total Population ◽  
Good Time ◽  
White Children ◽  
Aboriginal Population ◽  
Educational Issue ◽  
Special Programs ◽  
The One ◽  
The Military ◽  
Aboriginal Children

When I first moved to Coffs Harbour in 1972, I quickly became aware of the problems facing Aboriginal children in the school and community. Now, ten years later, seems a good time to review the position.Statistically there have been changes. The Aboriginal population in Coffs Harbour Shire is 1.6% of the total population, namely: males 200, females 194, total 394.The new Tyalla Primary which opened next to Orara High in 1978 has 29 Aboriginal pupils, while the Aboriginal population of Orara High itself has increased from 10 to 31 students (2 being in Year 11) in keeping with this school’s growth from only Years 7 – 9 in 1973, to a full secondary school by 1976.It appears that attitudes among teachers and white children have polarised. There are the ‘hawks’ and the ‘doves’. When these terms were invented during the Eisenhower years in the U.S.A., it was easy to tell a ‘hawk’ from a ‘dove’. The ‘hawks’ were those who favoured warlike measures and confrontation, while the ‘doves’ were those who wanted peace talks and mutual disarmament. These days it has become difficult to differentiate in the military aviary but in this educational issue there seems to be a marked line of division. On the one hand there are those who condemn as ‘racist’ any special programs of financial aid to assist Aboriginal children, ‘the hawks’, and on the other those who blame a white-dominated society for the problems Aboriginal children face, ‘the doves’.

Optical engineering requirements for the LISA wavefront error budget

1998 ◽  
Author(s):  
Martin Caldwell ◽  
Paul McNamara ◽  
Anna Glennmar
Keyword(s):  
Error Budget ◽  
Optical Engineering ◽  
Wavefront Error

scholarly journals Prevalence of abnormal PAP smears in antenatal women in a tertiary hospital in India

2016 ◽  
Author(s):  
Saritha Shamsunder ◽  
Akriti Gautam ◽  
Geetika Khanna ◽  
Sunita Malik
Keyword(s):  
Pregnant Women ◽  
Pap Smear ◽  
Cervical Screening ◽  
Developed Countries ◽  
Antenatal Clinic ◽  
Comfort Level ◽  
Good Time ◽  
Pap Smears ◽  
Minor Bleeding ◽  
The Mean

Background: Pregnancy provides a good time for opportunistic screening of our women who rarely attend for cervical screening. The prevalence of abnormal PAP smear in pregnant women in developed countries was 5-6%, however, no literature was available from India. Aim: To determine the prevalence of abnormal PAP smears in antenatal women presenting to our antenatal clinic. Methods: Women attending the antenatal clinic with gestation of <28 weeks were recruited after an informed consent and had a PAP smear by Ayre spatula and cytobrush or a broom type of cytobrush. The comfort level during smear taking & any problems noted were recorded using a pain score. The smears were stained using the PAP stain, were categorized as adequate or inadequate & classified as per Bethesda classification. Results: We had 150 women participating, the mean age was 24.2 yrs, the mean period of gestation was 17 weeks; 43.9% were nulliparous. Smear adequacy rate was 71.5% overall. Pain during procedure was reported in 2.9% of women, 18.3% had minor discomfort; 78.6% were comfortable. Minor bleeding during smear taking was noted in 15%; this was more with the cytobrush & broom than the Ayre spatula alone. Abnormal smears were seen in three women; two had AGC & one had LSIL. Conclusions: Opportunistic cervical screening during pregnancy is safe and well tolerated. Abnormal Cervical smears were seen in 2% of our pregnant women.

scholarly journals An innovative image fusion algorithm based on wavelet transform and discrete fast curvelet transform

2011 ◽  
Vol 1 (3) ◽  
Author(s):  
T. Sumathi ◽  
M. Hemalatha
Keyword(s):  
Wavelet Transform ◽  
Image Fusion ◽  
Curvelet Transform ◽  
Relevant Information ◽  
Good Time ◽  
Discrete Wavelet ◽  
Fusion Algorithm ◽  
Time Frequency ◽  
Fused Image

AbstractImage fusion is the method of combining relevant information from two or more images into a single image resulting in an image that is more informative than the initial inputs. Methods for fusion include discrete wavelet transform, Laplacian pyramid based transform, curvelet based transform etc. These methods demonstrate the best performance in spatial and spectral quality of the fused image compared to other spatial methods of fusion. In particular, wavelet transform has good time-frequency characteristics. However, this characteristic cannot be extended easily to two or more dimensions with separable wavelet experiencing limited directivity when spanning a one-dimensional wavelet. This paper introduces the second generation curvelet transform and uses it to fuse images together. This method is compared against the others previously described to show that useful information can be extracted from source and fused images resulting in the production of fused images which offer clear, detailed information.

scholarly journals Reorganization and Monophyly of the Genus Rickettsiella: All in Good Time

2008 ◽  
Vol 74 (16) ◽  
pp. 5263-5264 ◽  
Author(s):  
A. Leclerque ◽  
R. Cordaux ◽  
D. Bouchon
Keyword(s):  
Good Time

UWB Positioning Systsem Design: Selection of Modulation and Multiple Access Schemes

2007 ◽  
Vol 61 (1) ◽  
pp. 45-62 ◽  
Author(s):  
Hui Yu ◽  
Enrique Aguado ◽  
Gary Brodin ◽  
John Cooper ◽  
David Walsh ◽  
...  
Keyword(s):  
Multiple Access ◽  
High Performance ◽  
Ultra Wideband ◽  
Good Time ◽  
Modulation Scheme ◽  
Positioning System ◽  
Indoor Environments ◽  
Signal Design ◽  
Positioning Systems ◽  
Design Selection

In densely-populated cities or indoor environments, limited visibility to satellites and severe multipath effects significantly affect the accuracy and reliability of satellite-based positioning systems. To meet the needs of “seamless navigation” in these challenging environments an advanced terrestrial positioning system is under development. This system is based upon Ultra-Wideband (UWB) technology, which is a promising candidate for this application due to good time domain resolution and immunity to multipath. This paper presents a detailed analysis of two key aspects of the UWB signal design that will allow it to be used as the basis of such a high performance positioning system: the modulation scheme and the multiple access technique. These two aspects are evaluated in terms of spectral efficiency and synchronisation performance over multipath channels. Thus this paper identifies optimal modulation and multiple access techniques for a long range, high performance terrestrial positioning system using UWB.

Maps and Blandscapes

2021 ◽  
pp. 47-49
Author(s):  
Emily Thomas ◽  
Keyword(s):  
Good Time ◽  
The World

Travel writer Colin Thubron once wrote, “over there, as likely as not, everything will be depressingly the same”. Is the world homogenising, everywhere morphing into everywhere else? The worldwide lockdown seems like a good time to armchair travel and reflect on places other than our own. Using the philosophy of maps, I argue we should be optimistic: our world is not everywhere the same.

‘Where to live after retirement’

1977 ◽  
Vol 15 (21) ◽  
pp. 84-84
Keyword(s):  
Elderly People ◽  
Sheltered Housing ◽  
Good Time ◽  
Residential Home ◽  
Mobile Homes ◽  
Climbing Stairs

This recent Consumer Publication stresses that the decision where to retire needs to be thought about carefully and in good time. It discusses whether to move, or to stay put and adapt an existing house to be easier and safer to live in, for advancing years may make some activities more difficult - climbing stairs, carrying coal, driving, shopping. The book advises on grants and other help to make any necessary adaptations, deals with the position of private and council tenants, describes sheltered housing schemes, granny flats, mobile homes and discusses the choice of a residential home for elderly people. Some sources of help or information are listed.

Мобильное библиотечное обслуживание на примере Новосибирской областной детской библиотеки им. А. М. Горького

Infolib ◽  
2020 ◽  
Vol 24 (4) ◽  
pp. 44-46
Author(s):  
Olga Kostina ◽  
Keyword(s):  
Mobile Services ◽  
Good Time ◽  
Technological Equipment ◽  
Remote Areas ◽  
Cultural Events

In the article, the author describes in detail the process of providing mobile services to readers. An effective method of service - bibliobus service - has been introduced by the library by delivering the necessary literature for the needs of the population living in remote areas. Another advantage of the mobile library is that it is available as a mobile library in places where people gather and hold cultural events. In order to promote and expand the resources of the library, the project "Book in Action" was launched in collaboration with the Novosibirsk regional railways, and today it is recognized as one of the most effective methods of service. There is a special carriage on the train, equipped with the necessary technological equipment and furniture. At present, it serves the passengers to have a good time and is of great interest to passengers.

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