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Similarity Measure of Printed Characters using Image Skeletonization and Registration
Maaz Ahmed(아흐메드 마즈),Kang-Sun Choi(최강선) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
This paper proposes a method to find the similarity between printed characters. Our technique consists of a four-step process which includes binarization, skeletonization, image registration and finally finding the mean Euclidean distance between two given images. This method is promising as compared to the previously used techniques, helping us identify if any two given characters are printed using the same metal type.
Maaz Salman,Javad Balboli,Ramavath Prasad Naik,정완영,김종진 한국융합신호처리학회 2022 융합신호처리학회 논문지 (JISPS) Vol.23 No.2
This work demonstrates the design and evaluation of Aqua-Aware, a lightweight miniaturized light emitting diode (LED) based underwater compact sensor node which is used to obtain different characteristics of the underwater environment. Two optical sensor nodes have been designed, developed, and evaluated for a short and medium link range called as Aqua-Aware short range (AASR) and Aqua-Aware medium range (AAMR), respectively. The hardware and software implementation of proposed sensor node, algorithms, and trade-offs have been discussed in this paper. The underwater environment is emulated by introducing different turbulence effects such as air bubbles, waves and turbidity in a 4-m water tank. In clear water, the Aqua-Aware achieved a data rate of 0.2 Mbps at communication link up to 2-m. The Aqua-Aware was able to achieve 0.2 Mbps in a turbid water of 64 NTU in the presence of moderate water waves and air bubbles within the communication link range of 1.7-m. We have evaluated the luminous intensity, packet success rate and bit error rate performance of the proposed system obtained by varying the various medium characteristics.
Maaz, K.,Karim, S.,Kim, G.H. North Holland ; Elsevier Science Ltd 2012 Chemical physics letters Vol.549 No.-
Ni<SUB>x</SUB>Co<SUB>1-x</SUB>Fe<SUB>2</SUB>O<SUB>4</SUB> (x~0.3) nanoparticles were synthesized via chemical co-precipitation method. The particle size (d) was found to increase linearly with increasing annealing temperature. Magnetic studies revealed that the coercivity (H<SUB>C</SUB>) attains a value of 965Oe at ~18nm and then decreases for larger particles. The behavior of H<SUB>C</SUB> with d was attributed to the superparamagnetic nature of smaller nanoparticles, whereas for larger particles it was attributed to domain transformation mechanism. Both saturation magnetization (M<SUB>S</SUB>) and superparamagnetic blocking temperature (T<SUB>b</SUB>) were found to increase linearly with increasing size of the nanoparticles.
Ansari, Shabnam,Maaz, Mohammad,Alam, Shah,Alam, Sazid,Ahmad, Ijhar Cellmed Orthocellular Medicine and Pharmaceutical 2020 셀메드 (CellMed) Vol.10 No.2
Background: Chronic kidney disease (CKD) is affective a large portion of the world population prompting the need for extensive healthcare resources such as lifelong dialysis or kidney transplantation. The beneficial effect of conventional therapy in controlling the CKD progression remains a challenge due to their relative efficacy, safety, and accessibility. On the other hand, Unani medicine provides a therapeutic regimen that consists of a combination of treatment from rehabilitation to herbal pharmacotherapy. Methods: Two cases of chronic kidney disease were treated with dietotherapy, regimenal therapy ('bukhoor aam') and oral herbal drugs for 2-3 weeks. Endpoints of evaluation were symptoms and signs of the CKD, kidney function test, urine albumin, urine RBC, hemoglobin and liver function test. Result: Notable improvement was observed in the endpoints. Conclusion: Unani treatment was observed preliminarily beneficial in the treatment of chronic kidney disease. Rigorous pharmacological and clinical studies should be performed to warrant their efficacy and safety in CKD individuals.
Magnetic properties of one-dimensional embedded nickel nanostructures in gold nanowires
Ishrat, S.,Maaz, K.,Chen, R.,Kim, S.H.,Jung, M.H.,Kim, G.H. Elsevier 2012 Current Applied Physics Vol.12 No.1
Magnetic nanostructures of nickel embedded in gold were successfully fabricated by electrochemical deposition in porous alumina templates. Structural characterization of the samples confirmed the formation of pure phase, crystalline multi-segmented Au-Ni-Au nanowires. Magnetic characterization of the wires reveals that ferromagnetism arises as a result of Ni embedded in Au segments. An interesting behavior of coercivity was observed that showed a rapid decrease of coercivity for smaller Ni segments while a monotonic decrease was found for the larger segments. Finally, the saturation magnetization of the wires exhibited a slower increase for smaller Ni segments while a sharp increase was observed for larger Ni segments.
Effect of heat treatment on impact resistance of AU5GT and AS7G06 aluminum alloys
Muhammad Muzamil,Maaz Akhtar,Muhammad Samiuddin,Murtuza Mehdi 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.10
Impact strength is one of the major mechanical properties that a material should possess in order to absorb sudden changes in the load intensity. The objective of current study is to compare the impact strength of two material (AU5GT and AS7G06), which are used in different structural applications. Almost no work is available which compares the impact strength of selected grade alloys along with different heat treatment cycles. Specimens are heat treated first as per designed cycles, later impact testing is performed. Charpy impact test is conducted in accordance with ASTM E23-12 standard method on three samples with and without heat treatment for each cycle. Solutionizing on samples is done at constant time and temperature to achieve homogenization. Later, aging is conducted at different temperatures ranging from 100-200°C (different intervals) at constant time to find the effect of precipitation hardness that actually increases the strength. Sample hardness is determined using Vickers micro hardness testing machine for each heat treatment cycle. Charpy test results provided the impact energy that is used to determine the strength before fracture. Heat treated samples have showed increase in impact strength for AS7G06 aluminum alloy while AU5GT shows very little change. This is because of growing the precipitation with respect to temperature, which resulted in more hard regions across grains. Hardness also shows an increasing relationship, as expected. Fracture surfaces are analyzed on stereo microscopy and Scanning electron microscopy (SEM) to find the final mode of fracture, that is brittle, ductile or transitional (combination of both brittle and ductile).