Applications of Euler-Seidel matrices

A. Dil,V. Kurt 장전수학회 2009 Advanced Studies in Contemporary Mathematics Vol.18 No.2

In this paper we give some applications of Euler-Seidel matrices. We use the algorithm method to investigate structures of Fibonacci and Lucas num- bers. We also proved that p (p - 1) + 1 - th row of the Euler-Seidel matrices over Zp (p is prime) is either zero sequence or it repeats the initial sequence.

Issues of Harmonization of ISO 9001 Standard and the Law 09-08. Protection of Personal Data in Morocco: Potentials and Risks

Adil CHEBIR,Ibtissam EL MOURY,Adil ECHCHELH,Omar TAOUAB 국제컴퓨터통신보호논문지학회 2023 International journal of computer science and netw Vol.23 No.10

Since 2009, Morocco has had a law governing the processing of personal data, the law 09-08, and a supervisory authority, the CNDP (National Commission for the Protection of Personal Data). Since May 2018, the European General Regulation on the Protection of Personal Data (GDPR) entered into force, which applies outside the EU in certain cases and therefore to certain Moroccan companies. The question of the protection of personal data is primarily addressed to the customer. The latter may not only be a victim of crime linked to ICT, but also have to face risks linked to the collection and abusive processing of his personal data by the private and public sectors. Often the customer does not really know how their data is stored, nor for how long and for what purpose. This fact raises the question of satisfying customer requirements, in particular for organizations that have adopted a quality approach based on ISO 9001 standard.In order to master these constraints, Moroccan companies have to adopt strategies based on modern quality management techniques, especially the adoption of principles issued from the international standard ISO 9001 while being confirmed by the law 09-08. It is through ISO 9001 and the law 09-08 that these companies can refer to recognized approaches in terms of quality and compliance. The major challenge for these companies is to have a Quality approach that allows the coexistence between the law 09-08 and ISO 9001 standard and this article deals within this specific context.

Effects of different surface treatments on the shear bond strength of veneering ceramic materials to zirconia

Adil Othman Abdullah,Yu Hui,Xudong Sun,Sarah Pollington,Fenik Kaml Muhammed,Yi Liu 대한치과보철학회 2019 The Journal of Advanced Prosthodontics Vol.11 No.1

PURPOSE. To evaluate and compare the effect of different materials and techniques on the shear bond strength of veneering ceramic materials to zirconia. MATERIALS AND METHODS. 136 sintered zirconia cubes were prepared and randomly divided into four study groups according to corresponding methods of surface treatment and materials: GLN (grinding followed by laser scanning using Noritake Cerabien ZR), SLN (sandblasting followed by laser scanning using Noritake Cerabien ZR), GLV (grinding followed by laser scanning using VITA VM 9), and SLV (sandblasting followed by laser scanning using VITA VM 9). Spraying technique was performed to coat the core. Profilometer, SEM, XRD, EDS, universal testing machine, and stereomicroscope were used to record surface roughness Ra, surface morphology, phase transformation, elemental compositions, shear bond strength SBS values, and failure types, respectively. Specimens were investigated in unaged (not immersed in artificial saliva) and aged (stored in artificial saliva for a month) conditions to evaluate SBS values. RESULTS. Grinding and GLN as first and second surface treatments provided satisfactory Ra values in both conditions (1.05 ± 0.24 um, 1.30 ± 0.21 um) compared to sandblasting and other groups (P<.05). The group GLN showed the highest SBS values in both conditions (30.97 ± 3.12 MPa, 29.09 ± 4.17 MPa), while group SLV recorded the lowest (23.96 ± 3.60 MPa, 22.95 ± 3.68 Mpa) (P<.05). Sandblasting showed phase transformation from t-m. Mixed failure type was the commonest among all groups. CONCLUSION. GLN showed to be a reliable method which provided satisfactory bond strength between the veneer ceramic and zirconia. This method might preserve the integrity of fixed dental crowns. [ J Adv Prosthodont 2019;11:65-74] PURPOSE. To evaluate and compare the effect of different materials and techniques on the shear bond strength of veneering ceramic materials to zirconia. MATERIALS AND METHODS. 136 sintered zirconia cubes were prepared and randomly divided into four study groups according to corresponding methods of surface treatment and materials: GLN (grinding followed by laser scanning using Noritake Cerabien ZR), SLN (sandblasting followed by laser scanning using Noritake Cerabien ZR), GLV (grinding followed by laser scanning using VITA VM 9), and SLV (sandblasting followed by laser scanning using VITA VM 9). Spraying technique was performed to coat the core. Profilometer, SEM, XRD, EDS, universal testing machine, and stereomicroscope were used to record surface roughness Ra, surface morphology, phase transformation, elemental compositions, shear bond strength SBS values, and failure types, respectively. Specimens were investigated in unaged (not immersed in artificial saliva) and aged (stored in artificial saliva for a month) conditions to evaluate SBS values. RESULTS. Grinding and GLN as first and second surface treatments provided satisfactory Ra values in both conditions (1.05 ± 0.24 um, 1.30 ± 0.21 um) compared to sandblasting and other groups (P<.05). The group GLN showed the highest SBS values in both conditions (30.97 ± 3.12 MPa, 29.09 ± 4.17 MPa), while group SLV recorded the lowest (23.96 ± 3.60 MPa, 22.95 ± 3.68 Mpa) (P<.05). Sandblasting showed phase transformation from t-m. Mixed failure type was the commonest among all groups. CONCLUSION. GLN showed to be a reliable method which provided satisfactory bond strength between the veneer ceramic and zirconia. This method might preserve the integrity of fixed dental crowns. [ J Adv Prosthodont 2019;11:65-74]

Metaheuristic Search Approach Based on In-house/Out-sourced Strategy to Solve Redundancy Allocation Problem in Component-Based Software Systems

Adil A.A. Ssaed,Wan M. N. Wan Kadir,Siti Zaiton Mohd Hashim 보안공학연구지원센터 2012 International Journal of Software Engineering and Vol.6 No.4

A Taxonomy of Grid Resource Selection Mechanisms

Adil Yousif,Abdul Hanan Abdullah,Muhammad Shafie Abd Latiff,Mohammed Bakri Bashir 보안공학연구지원센터(IJGDC) 2011 International Journal of Grid and Distributed Comp Vol.4 No.3

Screening of the growth of thymus of human fetuses

Adil Asghar,Mohammad Rehan Asad,Shagufta Naaz,Mamta Rani 대한해부학회 2019 Anatomy & Cell Biology Vol.52 No.4

The thymus is a lymphoepithelial organ, and its morphometry is commonly utilized for surveillance of the immunological status of fetus and neonates. Many studies showed that fetal thymus size is used as a prognostic indicator for pregnancy-related disorders such as eclampsia, preterm labor, and gestational diabetes. The study aims to establish reference ranges of the normal fetal thymus size between 12 and 40 weeks of gestational age (GA). The study was conducted on 89 fetuses. They were dissected to capture the morphometry of thymus: transverse diameter, perimeter, and weight. Considering these parameters were dependent variables of GA and gestational weight (GW). Their relationship was studied by a multiple regression model. The best fit models in predicting thymic dimensions as a function of GA and GW were determined using regression analysis. Mean transverse diameter, perimeter, and thymus weight was 33.45±2.91 mm, 125.72±55.4 mm, and 3.078±3.06 g, respectively. They were increased throughout pregnancy as GA and GW advanced. The regression equation for a transverse diameter of the thymus as a function of GA was (0.303×GA–4.885, R2=0.8196) and for the perimeter of the thymus was (1.0212×GA–15.24, R2=0.8666). Reference ranges and baseline data of the normal fetal thymic dimensions between 12 and 40 weeks of GA have been established.

Ambitious and Anxious: How Chinese College Students Succeed and Struggle in American Higher Education

Adil Bentahar 아시아테플 2022 The Journal of Asia TEFL Vol.19 No.2

Water vapor-induced structure modification of vertically-aligned carbon nanotube arrays and successive thin film coating for enhanced field emission properties

Adil Hawsawi,조성일,강정수,박규창,정구환 한국물리학회 2020 Current Applied Physics Vol.20 No.4

Vertically-aligned carbon nanotubes (VCNTs) are used as electron source in various field emission applications owing to its high aspect ratio, chemical inertness, mechanical strength and electrical conductivity. Here, we demonstrate that surface structure modification along with thin film coating enhances the field emission performance, such as turn-on voltage, emission site density, and stability. In the present study, VCNTs with different heights were grown on silicon wafers by thermal chemical vapor deposition followed by the structure modification of VCNTs using capillarity-driven water vapor condensation. We obtained various surface morphologies by varying the water vapor exposure time and heating temperature. In addition, the structure-modified VCNTs surfaces were coated with W and SiO2 thin films using electron-beam evaporation. It was observed that W-coated VCNTs with modified surface morphology results in the best field emission performance.

Comparative Analysis of Integer-order and Fractional-order Proportional Integral Speed Controllers for Induction Motor Drive Systems

Adil Khurram,Habibur Rehman,Shayok Mukhopadhyay,Daniyal Ali 전력전자학회 2018 JOURNAL OF POWER ELECTRONICS Vol.18 No.3

Linear proportional–integral (PI) controllers are an attractive choice for controlling the speed of induction machines because of their simplicity and ease of implementation. Fractional-order PI (FO–PI) controllers, however, perform better than PI controllers because of their nonlinear nature and the underlying iso-damping property of fractional-order operators. In this work, an FO–PI controller based on the proposed first-order plus dead-time induction motor model and integer-order (IO) controllers, such as Ziegler–Nichols PI, Cohen–Coon PI, and a PI controller tuned via trial-and-error method, is designed. Simulation and experimental investigation on an indirect field-oriented induction motor drive system proves that the proposed FO–PI controller has better speed tracking, lesser settling time, better disturbance rejection, and lower speed tracking error compared with linear IO–PI controllers. Our experimental study also validates that the FO–PI controller maximizes the torque per ampere output of the induction machine and can effectively control the motor at low speed, in field-weakening regions, and under detuned conditions.

A note on Enstr\"{o}m-Kakeya theorem for quaternionic polynomials

Adil Hussain 강원경기수학회 2022 한국수학논문집 Vol.30 No.3

In this paper, we are concerned with the problem of locating the zeros of regular polynomials of a quaternionic variable with quaternionic coefficients. We derive new bounds of Enestr\"{o}m-Kakeya type for the zeros of these polynomials by virtue of a maximum modulus theorem and the structure of the zero sets in the newly developed theory of regular functions and polynomials of a quaternionic variable. Our results generalize some recently proved results about the distribution of zeros of a quaternionic polynomial.