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2020

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Soledad Domesticada, Nicolás Lara Sep 2020

Soledad Domesticada, Nicolás Lara

Revista Surco Sur

No abstract provided.

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Psicología Y Racismo. Una Reflexión, Carmen Díaz Sep 2020

Psicología Y Racismo. Una Reflexión, Carmen Díaz

Revista Surco Sur

Vivimos momentos en que la nación americana se encuentra convulsionada por más de una razón. A los efectos de la pandemia del covid-19 se suman los enfrentamientos entre grupos radicales azuzados por el racismo, el individualismo rampante, el cansancio histórico de los negros, el abuso de poder, el miedo al diferente y la extrema politización en tiempos de elecciones que afectan, entre otros factores, el devenir en las calles de todas las ciudades de Estados Unidos. La psicología, ciencia en ocasiones inextricable por conjurar para su haber sujeto y objeto del conocimiento en una sola parcela de la realidad —el …

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Dos Mitos Filosóficos Sobre La Violencia Racial, Alex Levine Sep 2020

Dos Mitos Filosóficos Sobre La Violencia Racial, Alex Levine

Revista Surco Sur

Éste ensayo analiza y critica dos mitos comunes sobre la violencia racial, uno que presupone que requiere una deshumanización de la víctima, otro que presupone la deshumanización del agente. Ambos están relacionados con una herencia intellectual en la que una noción antigua de la naturaleza humana y de la razón humana son claves, noción que merece nuestro escrutinio franco.

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Los Espacios Intermedios De La Luz: Eliseo Diego Y El Oscuro Esplendor, Ivette Fuentes Sep 2020

Los Espacios Intermedios De La Luz: Eliseo Diego Y El Oscuro Esplendor, Ivette Fuentes

Revista Surco Sur

La poética de Eliseo Diego expresa un nuevo modo de insularidad, donde la luz no quema en su incidir directo sino en el suave y discreto memorial que se descubre por la comprensión de la mirada desde dentro de sí mismo. El asombro surge porque el rayo de luz impregna de sabiduría el alma del hombre y así descubre, por la luz interior, los arcanos del “oscuro esplendor”. La penumbra y los resplandores lumínicos en Eliseo Diego, como duelo entre la noche y el día, presiden la nominación más exacta en una conjunción del terror y la dicha, la caída …

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Cyclic Topology Enhancing Structural Ordering And Stability Of Comb-Shaped Polypeptoid Thin Films Against Melt-Induced Dewetting, Naisheng Jiang, Jianxia Chen, Tianyi Yu, Albert Chao, Liying Kang, Ying Wu, Kangmin Niu, Ruipeng Li, Masafumi Fukuto, Donghui Zhang Sep 2020

Cyclic Topology Enhancing Structural Ordering And Stability Of Comb-Shaped Polypeptoid Thin Films Against Melt-Induced Dewetting, Naisheng Jiang, Jianxia Chen, Tianyi Yu, Albert Chao, Liying Kang, Ying Wu, Kangmin Niu, Ruipeng Li, Masafumi Fukuto, Donghui Zhang

Faculty Publications

Copyright © 2020 American Chemical Society. We investigated the effect of cyclic chain topology on the molecular ordering and thermal stability of comb-shaped polypeptoid thin films on silicon (Si) substrates. Cyclic and linear poly(N-decylglycine) (PNDG) bearing long n-decyl side chains were synthesized by ring-opening polymerization of N-decylglycine-derived N-carboxyanhydrides. When the spin-coated thin films were subjected to thermal annealing at temperatures above the melting temperature (T > Tm), the cyclic PNDG films exhibited significantly enhanced stability against melt-induced dewetting than the linear counterparts (l-PNDG). When recrystallized at temperatures below the crystallization temperature (T < Tc), the homogeneous c-PNDG films exhibit enhanced crystalline ordering relative to the macroscopically dewetted l-PNDG films. Both cyclic and linear PNDG molecules adopt cis-amide conformations in the crystalline film, which transition into trans-amide conformations upon melting. A top-down solvent leaching treatment of both l/c-PNDG films revealed the formation of an irreversibly physisorbed monolayer with similar thickness (ca. 3 nm) on the Si substrate. The physisorbed monolayers are more disordered relative to the respective thicker crystalline films for both cyclic and linear PNDGs. Upon heating above Tm, the adsorbed c-PNDG chains adopt trans-amide backbone conformation identical with the free c-PNDG molecules in the molten film. By contrast, the backbone conformations of l-PNDG chains in the adsorbed layers are notably different from those of the free chains in the molten film. We postulate that the conformational disparity between the chains in the physically adsorbed layers versus the free chains in the molten film is an important factor to account for the difference in the thermal stability of PNDG thin films. These findings highlight the use of cyclic chain topology to suppress the melt-induced dewetting in polymer thin films.

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Method Of Stem Cell Delivery Into The Brain During Chronic Disease Using Blood Brain Barrier Permeabilizers, Cesario Venturina Borlongan, Paul R. Sanberg Sep 2020

Method Of Stem Cell Delivery Into The Brain During Chronic Disease Using Blood Brain Barrier Permeabilizers, Cesario Venturina Borlongan, Paul R. Sanberg

USF Patents

Blood brain barrier (BBB) permeabilizers, such as mannitol, can facilitate the entry of stem cells from the periphery to the stroke brain. It is unknown whether BBB permeation in the chronic stage of the disease still facilitates the entry of stem cells from the periphery to the injured brain. Evidence herein shows BBB permeation in the chronic stage of stroke assisted in the entry of stem cells from the periphery to the stroke brain. Stroke models treated with human umbilical cord stem cells (hUCBC) only (2 million viable cells), mannitol or a combination. Results revealed that hUCBC alone or combined …

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Ammonia Removal In Freshwater And Saltwater Systems, Norma A. Alcantar, Wen Zhao, Sarina Joy Ergas Sep 2020

Ammonia Removal In Freshwater And Saltwater Systems, Norma A. Alcantar, Wen Zhao, Sarina Joy Ergas

USF Patents

An ammonia adsorption product is described which may be used for fresh caught fish and bait. The product may comprise functionalized tectosilicate compound and a buffer. High concentrations of ammonia produced by fish waste can be lethal, even though oxygen availability is rich enough to keep fish breathing. The product is a user-friendly, sustainable, affordable product which is able to extend the life of the fish by safely removing ammonia by an ion-exchange mechanism. This product can convert toxic ammonia into ammonium and uptake ammonium by releasing sodium ions in the water.

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Climatic Influence On The Growth Pattern Of Panthasaurus Maleriensis From The Late Triassic Of India Deduced From Paleohistology, Elżbieta M. Teschner, Sanjukta Chakravorti, Dhurjati P. Sengupta, Dorota Konietzko-Meier Sep 2020

Climatic Influence On The Growth Pattern Of Panthasaurus Maleriensis From The Late Triassic Of India Deduced From Paleohistology, Elżbieta M. Teschner, Sanjukta Chakravorti, Dhurjati P. Sengupta, Dorota Konietzko-Meier

Journal Articles

Metoposaurids are representatives of the extinct amphibian clade Temnospondyli, found on almost every continent exclusively in the Late Triassic deposits. Osteohistologically, it is one of the best-known temnospondyl groups, analyzed with a wide spectrum of methods, such as morphology, morphometry, bone histology or computed modelling. The least known member of Metoposauridae is Panthasaurus maleriensis from the Pranhita-Godavari basin in Central India, being geographically the most southern record of this family. For the first time the bone histology of this taxon was studied with a focus on the intraspecific variability of the histological framework and the relationship between the observed growth …

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Synthesis Of New Pyrazole & Thiazole Derivatives As Antimicrobial And Anticancer Agents, Ibrahim Saleh Alkhaibari Sep 2020

Synthesis Of New Pyrazole & Thiazole Derivatives As Antimicrobial And Anticancer Agents, Ibrahim Saleh Alkhaibari

Student Theses and Dissertations

This thesis contains two chapters. In chapter one, we are reporting an efficient synthesis of eighty new pyrazole derivatives: sixty 4-trifluoromethyl and 3,5 bis(trifluoromethyl)phenyl substituted pyrazole-derived anilines, and twenty 4-trifluoromethyl-phenyl substituted pyrazole-derived hydrazones. Some of the pyrazole derivatives have been tested against several bacterial strains and have shown promising results. In Chapter two, we are reporting a synthesis of novel fused-thiazole- nootkatone derivatives. These compounds have been tested as well against a broad spectrum of Gram-positive and Gram-negative bacteria. However, they have just shown activity against some of the Gram-positive bacteria. Further anti-cancer and toxicity studies of these compounds are …

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The Current - Volume 31 Issue 5, Nova Southeastern University Sep 2020

The Current - Volume 31 Issue 5, Nova Southeastern University

Student Newspapers

No abstract provided.

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Modification Of Irisin Level In Overweight/Obese Women During Pregnancy And Its Association With Some Metabolic Risk Factors, Mohammad Ahmad Hamza, Yassar Yahya Al Tamer, Omar Abdulmajeed Al Habib Sep 2020

Modification Of Irisin Level In Overweight/Obese Women During Pregnancy And Its Association With Some Metabolic Risk Factors, Mohammad Ahmad Hamza, Yassar Yahya Al Tamer, Omar Abdulmajeed Al Habib

Baghdad Science Journal

Irisin is a novel myokine and adipokine, its role during pregnancy and its association with some metabolic risk factors especially pre-pregnancy body mass index (pre-BMI) need more evaluation. The aim of the study is to find whether the pre-BMI could predict irisin levels during normal pregnancy and to clarify associations of irisin with some pathological parameters. Irisin levels were estimated by ELISA in sera of 59 normal pregnant women who enrolled from December 2016 to May 2017 at Maternity Hospital, Zakho city, Kurdistan region (Iraq). Thirty-two normal-weight pregnant (pre-BMI≤24.9 kg/m2, Age=24.03 mean±3.7standard deviation) and 27 overweight/obese-pregnant (pre-BMI>25 kg/m2, Age=27.6 …

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Ctj: Input-Output Based Relation Combinatorial Testing Strategy Using Jaya Algorithm, Mohammed Issam Younis, Abdul Rahman A. Alsewari, Ng Yeong Khang, Kamal Z. Zamli Sep 2020

Ctj: Input-Output Based Relation Combinatorial Testing Strategy Using Jaya Algorithm, Mohammed Issam Younis, Abdul Rahman A. Alsewari, Ng Yeong Khang, Kamal Z. Zamli

Baghdad Science Journal

Software testing is a vital part of the software development life cycle. In many cases, the system under test has more than one input making the testing efforts for every exhaustive combination impossible (i.e. the time of execution of the test case can be outrageously long). Combinatorial testing offers an alternative to exhaustive testing via considering the interaction of input values for every t-way combination between parameters. Combinatorial testing can be divided into three types which are uniform strength interaction, variable strength interaction and input-output based relation (IOR). IOR combinatorial testing only tests for the important combinations selected by the …

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State V. Mcqueen Respondent's Brief Dckt. 47629 Sep 2020

State V. Mcqueen Respondent's Brief Dckt. 47629

Not Reported

No abstract provided.

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Fat Mass And Obesity Association Gene Polymorphism In Pcos Iraqi Women, Qais Ahmed Ibraheem, Luma Hasan Alwan Al Obaidy, Gulboy Abdolmageed Nasir, Manal Taha Meteab Al-Obaidi Sep 2020

Fat Mass And Obesity Association Gene Polymorphism In Pcos Iraqi Women, Qais Ahmed Ibraheem, Luma Hasan Alwan Al Obaidy, Gulboy Abdolmageed Nasir, Manal Taha Meteab Al-Obaidi

Baghdad Science Journal

Polycystic syndrome (PCOS) is a considerable infertility disorder in adolescents and adult women in reproductive age. Obesity is a vigorous risk factor related to POCS. This study aims to evaluate the association of obesity and PCOS by investigating several parameters including: anthropological, biochemical (lipid profile, fasting blood sugar, glucose tolerance test, and hormone levels (LH, FSH, LH/FSH ratio, Estradiol2 and Testosterone),and genetic parameters (Fat mass and Obesity associated gene (FTO) polymorphism at rs17817449) in 63 obese and non-obese PCOS women. The biochemical tests were investigated by colorimetric methods while FTO gene polymorphism was detected by PCR–RFLP. Lipid profile, FBS, GTT, …

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A Comparison Between Two Shape Parameters Estimators For (Burr-Xii) Distribution, Shurooq Ahmed Kareem Sep 2020

A Comparison Between Two Shape Parameters Estimators For (Burr-Xii) Distribution, Shurooq Ahmed Kareem

Baghdad Science Journal

This paper deals with defining Burr-XII, and how to obtain its p.d.f., and CDF, since this distribution is one of failure distribution which is compound distribution from two failure models which are Gamma model and weibull model. Some equipment may have many important parts and the probability distributions representing which may be of different types, so found that Burr by its different compound formulas is the best model to be studied, and estimated its parameter to compute the mean time to failure rate. Here Burr-XII rather than other models is consider because it is used to model a wide variety …

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Turbid Of Water By Using Fuzzy C- Means And Hard K- Means, Rand Muhaned Fawzi, Iden Hassan Alkanani Sep 2020

Turbid Of Water By Using Fuzzy C- Means And Hard K- Means, Rand Muhaned Fawzi, Iden Hassan Alkanani

Baghdad Science Journal

In this research two algorithms are applied, the first is Fuzzy C Means (FCM) algorithm and the second is hard K means (HKM) algorithm to know which of them is better than the others these two algorithms are applied on a set of data collected from the Ministry of Planning on the water turbidity of five areas in Baghdad to know which of these areas are less turbid in clear water to see which months during the year are less turbid in clear water in the specified area.

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Voice Identification Using Mfcc And Vector Quantization, Bassel Alkhatib, Mohammad Madian Waleed Kamal Eddin Sep 2020

Voice Identification Using Mfcc And Vector Quantization, Bassel Alkhatib, Mohammad Madian Waleed Kamal Eddin

Baghdad Science Journal

The speaker identification is one of the fundamental problems in speech processing and voice modeling. The speaker identification applications include authentication in critical security systems and the accuracy of the selection. Large-scale voice recognition applications are a major challenge. Quick search in the speaker database requires fast, modern techniques and relies on artificial intelligence to achieve the desired results from the system. Many efforts are made to achieve this through the establishment of variable-based systems and the development of new methodologies for speaker identification. Speaker identification is the process of recognizing who is speaking using the characteristics extracted from the …

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Evaluation Of Different Nitrogen Management On Yield And Some Of The Yield Components Of Rice (Shiroudi Cultivar), Elham Modiri, Davood Barari Tari, Ebrahim Amiri, Yousof Nicknejad, Hormoz Fallah Sep 2020

Evaluation Of Different Nitrogen Management On Yield And Some Of The Yield Components Of Rice (Shiroudi Cultivar), Elham Modiri, Davood Barari Tari, Ebrahim Amiri, Yousof Nicknejad, Hormoz Fallah

Baghdad Science Journal

Nitrogen (N) is a key growth and yield-limiting factor in cultivated rice areas. This study has been conducted to evaluate the effects of different conditions of N application on rice yield and yield components (Shiroudi cultivar) in Babol (Mazandaran, Iran) during the 2015- 2016 season. A factorial experiment executed of a Randomized Complete Block Design (RCBD) used in three iterations. In the first factor, treatments were four N amounts (including 50, 90, 130, and 170 kg N ha-1), while in the second factor, the treatments consisted of four different fertilizer splitting methods, including T1:70 % at the basal stage + …

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Beyond Microaggression: Overlapping Identities In Simulated Legal Practice, Peggy Cooper Davis, Danielle Davenport, Brence Pernell Sep 2020

Beyond Microaggression: Overlapping Identities In Simulated Legal Practice, Peggy Cooper Davis, Danielle Davenport, Brence Pernell

Villanova Law Review (1956 - )

No abstract provided.

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Optimization Of Nanostructured/Nano Sized Rice Husk Ash Preparation, Medhat Mostafa, Hamdy Salah, A. B. Saddek, Nabila Shehata Sep 2020

Optimization Of Nanostructured/Nano Sized Rice Husk Ash Preparation, Medhat Mostafa, Hamdy Salah, A. B. Saddek, Nabila Shehata

Baghdad Science Journal

The objective of the study is developing a procedure for production and characterization of rice husk ash (RHA). The effects of rice husk (RH) amount, burning/cooling conditions combined with stirring on producing of RHA with amorphous silica, highest SiO2, lowest loss on ignition (LOI), uniform particle shape distribution and nano structured size have been studied. It is concluded that the best amount is 20 g RH in 125 ml evaporating dish Porcelain with burning for 2 h at temperature 700 °C combined with cooling three times during burning to produce RHA with amorphous silica, SiO2 90.78% and LOI 1.73%. On …

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A Study Of Apelin-36 And Gst Levels With Their Relationship To Lipid And Other Biochemical Parameters In The Prediction Of Heart Diseases In Pcos Women Patients, Shaimaa Emad Ali, Fayhaa M. Khaleel, Farah Emad Ali Sep 2020

A Study Of Apelin-36 And Gst Levels With Their Relationship To Lipid And Other Biochemical Parameters In The Prediction Of Heart Diseases In Pcos Women Patients, Shaimaa Emad Ali, Fayhaa M. Khaleel, Farah Emad Ali

Baghdad Science Journal

This work studies the role of serum apelin-36 and Glutathione S-transferases (GST) activity in association with the hormonal, metabolic profiles and their link to the risk of cardiovascular disease (CVD) in healthy and patients' ladies with polycystic ovary syndrome (PCOS). A total of fifty-four (PCOS) patients and thirty-one healthy woman as a control have been studied. The PCOS patients were subdivided on the basis of body-mass-index (BMI), into 2-subgroups (the first group was obese-PCOS with BMI ≥ 30 and the second group was non-obese PCOS MBI<30). Fasting-insulin-levels and Lipid-profile, Homeostatic-model assessment-of-insulin-resistance (HOMA-IR), follicle-stimulating-hormone (FSH), luteinizing-hormone (LH), testosterone and serum Apelin-36 (AP-36) levels, GST-Activity were done for all groups. PCO patients showed higher concentricity of apelin-36 than healthy (160.43 ±20.81 (pg/ml) versus 85.49 ± 17.85 (pg/ml), P=0.008),while GST-activity decreased in PCOS patients and was higher in the control (7.99 ± 1.19(IU/L)versus 12.96 ±1.90(IU/L)respectively,with a P-value=0.022). Apelin-36 levels are directly interrelated with BMI and Very-low-density-lipoprotein (VLDL) in PCOS patients, but GST-activity levels correlated significantly negatively with (BMI) in PCOS patients. Moreover, obese-PCOS patients show increased AP-36 levels more than non-obese PCOS (185.76± 92.0(pg/ml) versus 123.59±27.65 (pg/ml), P=0.127) respectively, whilst the GST-activity was exhibited to be lower in obese-PCO patients more than in non-obese PCOS (6.99 ± 1.4(IU/L) versus 9.44 ± 2.0(IU/L), P=0.102). The data showed that AP-36 level is negatively associated with GST-activity in PCOS patients. AP-36 isn't legitimately ensured in the pathogenesis of PCO disorder, yet it may be included as an adipokine that is influenced by BMI. The oxidants increased because of the highly levels of VLDL and the lower in the activities of antioxidant, that may be a response to higher levels of oxidative stress. A decrease in the antioxidant capacity and an increase in AP-36 levels leads to an increased the risk of cardiovascular disease in PCOS patients.

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Using Real-Time Pcr To Investigate Some Of Antibiotic Resistance Genes From Streptococcus Agalactiae Isolates From Ewe Mastitis Cases In Nineveh Province, Ayman Albanna, Aseel A. H. Al-Layla Sep 2020

Using Real-Time Pcr To Investigate Some Of Antibiotic Resistance Genes From Streptococcus Agalactiae Isolates From Ewe Mastitis Cases In Nineveh Province, Ayman Albanna, Aseel A. H. Al-Layla

Baghdad Science Journal

In this study, from a total of 856 mastitis cases in lactating ewes, only 34 Streptococcus agalactiae isolates showed various types of resistance to three types of antibiotics (Penicillin, Erythromycin and Tetracycline). St. agalactiae isolates were identified according to the standard methods, including a new suggested technique called specific Chromogenic agar. It was found that antibiotic bacterial resistance was clearly identified by using MIC-microplate assay (dilution method). Also, by real-time PCR technique, it was determined that there were three antibiotics genes resistance ( pbp2b, tetO and mefA ). The high percentage of isolate carried of a single gene which was …

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Silver Nanoparticles And Their Role In Gene Expression Of Motility Gene Motb And Repression Of Ai-2-Controlled Gene, Bassam Shaker Mahmood Sep 2020

Silver Nanoparticles And Their Role In Gene Expression Of Motility Gene Motb And Repression Of Ai-2-Controlled Gene, Bassam Shaker Mahmood

Baghdad Science Journal

Antibiotic resistance is the capability of the strains to resist or protect themselves from the effects of an antibiotic. Such a resistance towards the current antimicrobials leads to the search of novel antimicrobials. Nanotechnology has been promising in different field of science and among it is the use of nanoparticles as antibacterial agents. The gastrointestinal tract seems to be the primary reservoir of uropathogenic E.coli (UPEC) in humans. UPEC strains harbour the urinary tract and cause urinary tract infection. They cause serious ailments in terms of humans. They develop resistance and increase their virulence by forming biofilms. They also show …

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Hiding The Type Of Skin Texture In Mice Based On Fuzzy Clustering Technique, Asst.Prof. Alaa Noori Mazhar, Dr.Ekhlas Falih Naser Sep 2020

Hiding The Type Of Skin Texture In Mice Based On Fuzzy Clustering Technique, Asst.Prof. Alaa Noori Mazhar, Dr.Ekhlas Falih Naser

Baghdad Science Journal

A substantial matter to confidential messages' interchange through the internet is transmission of information safely. For example, digital products' consumers and producers are keen for knowing those products are genuine and must be distinguished from worthless products. Encryption's science can be defined as the technique to embed the data in an images file, audio or videos in a style which should be met the safety requirements. Steganography is a portion of data concealment science that aiming to be reached a coveted security scale in the interchange of private not clear commercial and military data. This research offers a novel technique …

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A Comparison Among Different Methods For Estimating Regression Parameters With Autocorrelation Problem Under Exponentially Distributed Error, Ahmed Dheyab Ahmed, Baydaa Ismael Abdulwahhab, Ebtisam Karim Abdulah Sep 2020

A Comparison Among Different Methods For Estimating Regression Parameters With Autocorrelation Problem Under Exponentially Distributed Error, Ahmed Dheyab Ahmed, Baydaa Ismael Abdulwahhab, Ebtisam Karim Abdulah

Baghdad Science Journal

Multiple linear regressions are concerned with studying and analyzing the relationship between the dependent variable and a set of explanatory variables. From this relationship the values of variables are predicted. In this paper the multiple linear regression model and three covariates were studied in the presence of the problem of auto-correlation of errors when the random error distributed the distribution of exponential. Three methods were compared (general least squares, M robust, and Laplace robust method). We have employed the simulation studies and calculated the statistical standard mean squares error with sample sizes (15, 30, 60, 100). Further we applied the …

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Modified Bfgs Update (H-Version) Based On The Determinant Property Of Inverse Of Hessian Matrix For Unconstrained Optimization, Saad Shakir Mahmood Sep 2020

Modified Bfgs Update (H-Version) Based On The Determinant Property Of Inverse Of Hessian Matrix For Unconstrained Optimization, Saad Shakir Mahmood

Baghdad Science Journal

The study presents the modification of the Broyden-Flecher-Goldfarb-Shanno (BFGS) update (H-Version) based on the determinant property of inverse of Hessian matrix (second derivative of the objective function), via updating of the vector s ( the difference between the next solution and the current solution), such that the determinant of the next inverse of Hessian matrix is equal to the determinant of the current inverse of Hessian matrix at every iteration. Moreover, the sequence of inverse of Hessian matrix generated by the method would never approach a near-singular matrix, such that the program would never break before the minimum value of …

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Convergence Analysis For The Homotopy Perturbation Method For A Linear System Of Mixed Volterra-Fredholm Integral Equations, Pakhshan Mohammedameen Hasan, Nejmaddin Abdulla Sulaiman Sep 2020

Convergence Analysis For The Homotopy Perturbation Method For A Linear System Of Mixed Volterra-Fredholm Integral Equations, Pakhshan Mohammedameen Hasan, Nejmaddin Abdulla Sulaiman

Baghdad Science Journal

In this paper, the homotopy perturbation method (HPM) is presented for treating a linear system of second-kind mixed Volterra-Fredholm integral equations. The method is based on constructing the series whose summation is the solution of the considered system. Convergence of constructed series is discussed and its proof is given; also, the error estimation is obtained. Algorithm is suggested and applied on several examples and the results are computed by using MATLAB (R2015a). To show the accuracy of the results and the effectiveness of the method, the approximate solutions of some examples are compared with the exact solution by computing the …

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Improved Throughput Of Elliptic Curve Digital Signature Algorithm (Ecdsa) Processor Implementation Over Koblitz Curve K-163 On Field Programmable Gate Array (Fpga), Firas Gh. Tawfeeq, Alaa M. Abdul-Hadi Sep 2020

Improved Throughput Of Elliptic Curve Digital Signature Algorithm (Ecdsa) Processor Implementation Over Koblitz Curve K-163 On Field Programmable Gate Array (Fpga), Firas Gh. Tawfeeq, Alaa M. Abdul-Hadi

Baghdad Science Journal

The widespread use of the Internet of things (IoT) in different aspects of an individual’s life like banking, wireless intelligent devices and smartphones has led to new security and performance challenges under restricted resources. The Elliptic Curve Digital Signature Algorithm (ECDSA) is the most suitable choice for the environments due to the smaller size of the encryption key and changeable security related parameters. However, major performance metrics such as area, power, latency and throughput are still customisable and based on the design requirements of the device. The present paper puts forward an enhancement for the throughput performance metric by proposing …

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Effect Of Sn Addition On Phase Transformation Behavior Of Equiatomic Ni-Ti Shape Memory Alloy, Ali A. Aljubouri, Safa H. Mohammed, Mudhafar A. Mohammed Sep 2020

Effect Of Sn Addition On Phase Transformation Behavior Of Equiatomic Ni-Ti Shape Memory Alloy, Ali A. Aljubouri, Safa H. Mohammed, Mudhafar A. Mohammed

Baghdad Science Journal

Sn effect on the phase transformation behavior, microstructure, and micro hardness of equiatomic Ni-Ti shape memory alloy was studied. NiTi and NiTiSn alloys were produced using vacuum induction melting process with alloys composition (50% at. Ni, 50% at.Ti) and (Ni 48% at., Ti 50% at., Sn 2% at.). The characteristics of both alloys were investigated by utilizing Differential Scanning Calorimetry, X- ray Diffraction Analysis, Scanning Electron Microscope, optical microscope and vicker's micro hardness test. The results showed that adding Sn element leads to decrease the phase transformation temperatures evidently. Both alloy samples contain NiTi matrix phase and Ti2Ni secondary phase, …

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Matrix Form Of Deriving High Order Schemes For The First Derivative, Hassan Abd Salman Al-Dujaly, Yinlin Dong Sep 2020

Matrix Form Of Deriving High Order Schemes For The First Derivative, Hassan Abd Salman Al-Dujaly, Yinlin Dong

Baghdad Science Journal

For many problems in Physics and Computational Fluid Dynamics (CFD), providing an accurate approximation of derivatives is a challenging task. This paper presents a class of high order numerical schemes for approximating the first derivative. These approximations are derived based on solving a special system of equations with some unknown coefficients. The construction method provides numerous types of schemes with different orders of accuracy. The accuracy of each scheme is analyzed by using Fourier analysis, which illustrates the dispersion and dissipation of the scheme. The polynomial technique is used to verify the order of accuracy of the proposed schemes by …

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