scholarly journals Optical inspection of appearance faults for auto mirrors using Fourier filtering and convex hull arithmetic

2021 ◽  
Vol 19 (4) ◽  
pp. 279-293
Author(s):  
Yuan-Shyi Peter Chiu ◽  
Hong-Dar Lin ◽  
Hsu-Hung Cheng
Keyword(s):  
Fault Detection ◽  
Convex Hull ◽  
Mirror Reflection ◽  
Classification Rate ◽  
Foreign Objects ◽  
Optical Inspection ◽  
Fourier Filtering ◽  
Almost All ◽  
Crucial Part ◽  
High Pass

Auto mirrors are indispensable essential in reflection of objects behind the car and act a crucial part in driving security.  In manufacturing stages of auto mirrors, certain tasks operated unusually will cause producing scratches, chips, pinholes, bubbles, damaged edges, the general surface and profile faults on auto mirrors.  Those appearance faults sometimes will severely have an impact on standard of the mirror reflection and grow the driving hazard.  At traditional examination of auto mirrors in manufacturing process, almost all works are performed by human examiners.  Manual examination is simple to be disturbed by foreign objects reflected on the mirror surfaces and arouse causing mistaken determinations of fault examination.  Thence, this study works toward investigating the automatic appearance fault detection of auto mirrors.  We propose a fault enhancement technique based on Fourier high-pass filtering and the convex hull arithmetic to inspect appearance faults on auto mirrors.  This approach only utilizes their own information of testing images to judge whether there are any irregular appearance changes without the need of standard patterns for matching.  Experimental outcomes illustrate that the appearance fault detection rate reaches to 95.13%, and the false alarm rate decreases to 1.88%, and the correct classification rate attains to 98.11%. 

scholarly journals Health Monitor System

2021 ◽  
Vol 9 (VIII) ◽  
pp. 103-106
Author(s):  
M. Ujair Hoble
Keyword(s):  
Medical History ◽  
The People ◽  
Medical Sector ◽  
Medical Reports ◽  
History Of ◽  
Suitable Treatment ◽  
Medical Histories ◽  
Almost All ◽  
Health Monitor ◽  
Crucial Part

Health is a crucial part of human lives. Nowadays, healthcare is becoming vital each day, as there are lots of diseases that emerge around us. Technology is transforming the medical sector by massively impacting almost all practices and processes of medical professionals. Despite this, many of the people and medical staff still dealing with paper-based medical records and prescriptions while conducting treatment. When a patient wants to appoint any hospital or clinic, to carry previous medical reports or past prescriptions is becoming essential for them. It is necessary because the doctor gets an idea about the patient’s health status by referring to their previous medical histories, helping for better treatments and medications. However, patients cannot maintain every medical documentary for years. Conventionally, the doctor asks patients about their previous diseases, prescription, or medicine details orally, nevertheless it becomes difficult to get exact information from the patient. Sometimes, it becomes more important for the doctor to know about the medical history of a person so that they can provide suitable treatment with better clarity of that person’s health. Focussing on this, a smart medical assistant system is designed where doctors can record all prescriptions, treatment, or medical details of the patient on software instead of writing on a paper. All these records are stored in the central cloud and made visible to doctors as well as patients. Each patient has assigned a unique authentication card for maintaining the privacy of their medical history account. Doctors can access and update a patient’s medical history anytime and anywhere by logging into their account through a smartcard swipe. The system can avoid overdue to treatment decisions. Likewise, the system helps to keep transparency about medicines and treatment.

scholarly journals A sciaenid swim bladder with long skinny fingers produces sound with an unusual frequency spectrum

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hin-Kiu Mok ◽  
Shih-Chia Wu ◽  
Soranuth Sirisuary ◽  
Michael L. Fine
Keyword(s):  
Frequency Spectrum ◽  
Fundamental Frequency ◽  
Pulse Repetition Rate ◽  
Sound Production ◽  
Swim Bladder ◽  
Low Frequencies ◽  
Pass Filter ◽  
Number Of Cycles ◽  
Almost All ◽  
High Pass

Abstract Swim bladders in sciaenid fishes function in hearing in some and sound production in almost all species. Sciaenid swim bladders vary from simple carrot-shaped to two-chambered to possessing various diverticula. Diverticula that terminate close to the ears improve hearing. Other unusual diverticula heading in a caudal direction have not been studied. The fresh-water Asian species Boesemania microlepis has an unusual swim bladder with a slightly restricted anterior region and 6 long-slender caudally-directed diverticula bilaterally. We hypothesized that these diverticula modify sound spectra. Evening advertisement calls consist of a series of multicycle tonal pulses, but the fundamental frequency and first several harmonics are missing or attenuated, and peak frequencies are high, varying between < 1–2 kHz. The fundamental frequency is reflected in the pulse repetition rate and in ripples on the frequency spectrum but not in the number of cycles within a pulse. We suggest that diverticula function as Helmholz absorbers turning the swim bladder into a high-pass filter responsible for the absence of low frequencies typically present in sciaenid calls. Further, we hypothesize that the multicycle pulses are driven by the stretched aponeuroses (flat tendons that connect the sonic muscles to the swim bladder) in this and other sciaenids.

Optical Inspection Of Manufactured Glass Using Adaptive Fourier Filtering

1988 ◽  
Vol 27 (5) ◽  
Author(s):  
R. Cormack ◽  
K. M. Johnson ◽  
Lin Zhang ◽  
W. T. Cathey
Keyword(s):  
Optical Inspection ◽  
Fourier Filtering

Ultra high-pass Fourier filtering

2001 ◽  
Vol 69 (5) ◽  
pp. 582-585
Author(s):  
M. B. Danailov ◽  
C. S. Narayanamurthy
Keyword(s):  
Fourier Filtering ◽  
High Pass

Structure of ν-Al80.61Cr10.71Fe8.68, a giant hexagonal approximant of a quasicrystal determined by a combination of electron microscopy and X-ray diffraction

2000 ◽  
Vol 56 (3) ◽  
pp. 392-401 ◽  
Author(s):  
Z. M. Mo ◽  
H. Y. Zhou ◽  
K. H. Kuo
Keyword(s):  
Direct Methods ◽  
Mirror Reflection ◽  
Electron Microscopic ◽  
Decagonal Quasicrystal ◽  
Acta Cryst ◽  
X Ray ◽  
Icosahedral Cluster ◽  
Transition Metal Atoms ◽  
Starting Point ◽  
Almost All

ν-Al80.61Cr10.71Fe8.68, P63/m (No. 176), a = 40.68 (7), c = 12.546 (1) Å, V = 17 983 (8) Å3, atoms/cell = 1184.56, D x  = 3.518 g cm−3, λ(Mo Kα) = 0.71069 Å, μ = 5.032 mm−1, F(000) = 18 433, T = 293 K, final R = 0.075 for 3854 reflections with F o  > 4σ(F o ). The [001] high-resolution electron-microscopic image of the ν-AlCrFe phase clearly shows similar local characteristics to those given by the complex icosahedral cluster found in somewhat smaller hexagonal approximant structures, such as κ-Al76Cr18Ni6 [a = 17.674 (3), c = 12.516 (3) Å; Sato et al. (1997). Acta Cryst. C53, 1531–1533; Marsh (1998). Acta Cryst. B54, 925–926] and λ-Al4.32Mn [a = 28.382 (9), c = 12.389 (2) Å; Kreiner & Franzen (1997). J. Alloys Compd. 261, 83–104]. Using the known atomic distribution of this icosahedral cluster in the κ and λ phases as the starting point, the structure of the ν phase, a hexagonal intermetallic compound with probably the largest a parameter, was solved by X-ray single-crystal diffraction using direct methods. As in κ and λ phases, almost all TM (transition metal) atoms in the complex icosahedral cluster are icosahedrally coordinated. However, contrary to the λ structure in which about 98% of the TM atoms have icosahedral coordination, the TM atoms in the ν structure also form capped pentagonal prisms in the region between these complex icosahedral clusters, yielding an average icosahedral coordination of about 70% for TM atoms. After rapid solidification, the ν phase occurs together with a decagonal quasicrystal with a periodicity of about 12.5 Å along its tenfold axis and thus also consists of six layers, two flat ones each sandwiched between two puckered layers in mirror reflection, stacked along the c axis.

scholarly journals Tea and Chicory Extract Characterization, Classification and Authentication by Non-Targeted HPLC-UV-FLD Fingerprinting and Chemometrics

Foods ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 2935
Author(s):  
Josep Pons ◽  
Àlex Bedmar ◽  
Nerea Núñez ◽  
Javier Saurina ◽  
Oscar Núñez
Keyword(s):  
Least Squares ◽  
Partial Least Squares ◽  
External Validation ◽  
Prediction Errors ◽  
Classification Rate ◽  
White Tea ◽  
Oolong Tea ◽  
Financial Benefits ◽  
Calibration Models ◽  
Almost All

Tea is a widely consumed drink in the world which is susceptible to undergoing adulterations to reduce manufacturing costs and rise financial benefits. The development of simple analytical methodologies to assess tea authenticity, as well as to detect and quantify frauds, is an important matter considering the rise of adulteration issues in recent years. In the present study, untargeted HPLC-UV and HPLC-FLD fingerprinting methods were employed to characterize, classify, and authenticate tea extracts belonging to different varieties (red, green, black, oolong, and white teas) by partial least squares-discriminant analysis (PLS-DA), as well as to detect and quantify adulteration frauds when chicory was used as the adulterant by partial least squares (PLS) regression, to ensure the authenticity and integrity of foodstuffs. Overall, PLS-DA showed a good classification and grouping of the tea samples according to the tea variety and, except for some white tea extracts, perfectly discriminated from the chicory ones. One hundred percent classification rates for the PLS-DA calibration models were achieved, except for green and oolong tea when HPLC-FLD fingerprints were employed, which showed classification rates of 96.43% and 95.45%, respectively. Good predictions were also accomplished, also showing, in almost all the cases, a 100% classification rate for prediction, with the exception of white tea and oolong tea when HPLC-UV fingerprints were employed that exhibited a classification rate of 77.78% and 88.89%, respectively. Good PLS results for chicory adulteration detection and quantitation were also accomplished, with calibration, cross-validation, and external validation errors beneath 1.4%, 6.4%, and 3.7%, respectively. Acceptable prediction errors (below 21.7%) were also observed, except for white tea extracts that showed higher errors which were attributed to the low sample variability available.

Vibration Analysis of Blocked Circular Pipe Flow

2012 ◽  
Vol 165 ◽  
pp. 197-201 ◽  
Author(s):  
N. Liyana Tajul Lile ◽  
Hasnul Hadi ◽  
M.R. Roslan
Keyword(s):  
Fluid Flow ◽  
Pipe Flow ◽  
Vibration Analysis ◽  
Vibration Measurement ◽  
Circular Pipe ◽  
Foreign Objects ◽  
Circular Pipe Flow ◽  
Vibration Parameters ◽  
Almost All ◽  
The Impact

Pipes are found in almost all buildings and constructions where they are used to convey fluid to a desired location. Liquid containing foreign objects and impurities will sometimes creates unintentional built up or clog obstruction along the interior surface of the pipeline. This phenomenon may affect the fluid flow within the pipe. This work analyzed the impact of different blockage sizes inside a clear Polyvinyl Chloride (PVC) circular pipe using vibration measurement. Observations were made on the fluid flow patterns during the flow. This work encompasses the correlation between blockage thickness inside a circular pipe and vibration parameters.

scholarly journals BENDA ASING TELINGA HIDUNG TENGGOROK DI BAGIAN/SMF THT-KL BLU RSU PROF. DR. R. D. KANDOU MANADO PERIODE JANUARI 2008 – DESEMBER 2011

2013 ◽  
Vol 4 (3) ◽  
Author(s):  
Marthalisa S. Sosir ◽  
O. I. Palandeng ◽  
R. E.C. Tumbel
Keyword(s):  
External Auditory Canal ◽  
Age Groups ◽  
The Body ◽  
Age Group ◽  
Human Organs ◽  
Foreign Objects ◽  
Anatomic Locations ◽  
Almost All ◽  
Department Faculty ◽  
Nose And Throat

Abstract: Sudden death, especially among children, can occur due to aspiration or the swallowing of foreign objects. Foreign objects in human organs are any kind of matter that comes from outside or inside the body, which normally is not present in these organs. This was a retrospective and descriptive  study and was aimed to determine the incidence of cases of foreign objects in the ear, nose, or throat found in the Ear, Nose, and Throat - Head and Neck Department, Faculty of Medicine, University of Sam Ratulangi, Manado, from January 2008 through December 2011 in which there were 482 cases. The results showed that the highest number of cases was in 2010 (163 cases, 33.81%), followed by 2009, 2011, and 2008. Male and female cases were 61.82% and 38.18% respectively. Cases in the age group 0-10 years were 218 (45.22%), followed by the age groups: >51 years, 41-50 years, 21-30 years, 31-40 years, and 11-20 years. The most usual anatomic locations of the foreign objects were the external auditory canal (58.29%), followed by the nose, pharynx, esophagus, larynx and bronchus. Successful extractions of the foreign objects occured in 99.17% cases. Conclusion: The highest number of cases was in 2010, being more frequent in males. The most vulnerable age group was 0-10 years, and the most usual anatomic location of the foreign objects was the external auditory canal. Successful extractions of foreign objects occured in almost all cases. Keywords: foreign objects, respiratory tract.     Abstrak: Kematian mendadak terutama pada anak-anak dapat terjadi akibat aspirasi atau tertelan benda asing. Benda asing dalam suatu organ tubuh ialah benda yang berasal dari luar atau dalam tubuh, yang dalam keadaan normal tidak terdapat dalam organ tersebut. Penelitian ini bersifat retrospektif – deskriptif dan bertujuan untuk  mengetahui insiden kasus benda asing telinga, hidung, dan tenggorok di Poliklinik THT-KL RSU Prof. Dr.R D Kandou Manado selang bulan Januari 2008- Desember 2011. Data kasus sebanyak 482 dikumpulkan secara retrospektif dari catatan medik. Jumlah  kasus tertinggi pada tahun 2010 (163 kasus, 33,81%), diikuti oleh 2009, 2011, dan 2008. Kasus laki-laki sebanyak 61,82% dan perempuan 38,18%. Kelompok usia 0-10 tahun sebanyak 218 kasus (45,22%), diikuti kelompok usia >51 tahun, 41-50 tahun, 21-30 tahun, 31-40 tahun, dan 11-20 tahun. Lokasi anatomi benda asing tersering pada meatus akustikus eksterna (58,29%), kemudian hidung, faring, esofagus, dan laring serta bronkus. Keberhasilan penatalaksanaan benda asing (ekstraksi) 99,17%. Simpulan: Kasus benda asing pada telinga, hidung dan tenggorok tertinggi pada tahun 2010 dengan kelompok usia 0-10 tahun, jenis kelamin laki-laki, dan lokasi benda asing tersering pada meatus akustikus eksterna dengan tingkat keberhasilan ekstraksi yang tinggi. Kata kunci: benda asing, saluran napas.

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