Oscillations of First Order Neutral Differential Equations with Positive and Negative Coefficients

Hussain Ali Mohamad; Muntaha Yousif Abdullah

doi:10.21123/bsj.2014.11.4.1624-1628

Details

Publication Date

Sun Dec 07 2014

Journal Name

Baghdad Science Journal

Volume

11

Issue Number

4

DOI

10.21123/bsj.2014.11.4.1624-1628

Choose Citation Style

Statistics

View publication

8

Statistics

Oscillations of First Order Neutral Differential Equations with Positive and Negative Coefficients

Neutral differential equations oscillations.

Hussain Ali Mohamad

Muntaha Yousif Abdullah

...Show More Authors

Oscillation criterion is investigated for all solutions of the first-order linear neutral differential equations with positive and negative coefficients. Some sufficient conditions are established so that every solution of eq.(1.1) oscillate. Generalizing of some results in [4] and [5] are given. Examples are given to illustrated our main results.

View Publication Preview PDF

Quick Preview PDF

Publication Date

Thu Oct 25 2018

Journal Name

Al-nahrain Journal Of Science

Synthesis of some New 3-Substituted Heterocyclic Compounds Containing Bridgehead Nitrogen from 2-Amino Pyridine with Study Their Biological Activity

Naeemah

...Show More Authors

View Publication

Publication Date

Mon Feb 13 2023

Journal Name

Journal Of Educational And Psychological Researches

The Reality of Using Electronic Applications in Teaching Language Skills to People with Mild Intellectual Disability from the Mothers’ Perspective

linguistic skills

Electronic applications

intellectual disability

mothers of intellectual disability students

and hafer al-baten

Muneera

Khalid Habib Alshamri

...Show More Authors

Abstract

This study aims to identify the reality of using electronic applications in teaching language skills to people with mild intellectual disabilities from the mothers’ perspective. A descriptive approach was used. The electronic questionnaires were administered to the study sample, 122 responses were received from mothers of the students with mild intellectual disability in Hafer Al-Baten schools. The response average rate was 94%. The results showed that there are statistically significant differences that are related to the variant of monthly income as for the barriers to using electronic applications in such schools, whereas there were no differences regarding the variant of monthly income regarding t

View Publication Preview PDF

Publication Date

Fri Dec 09 2022

Journal Name

Molecules

Palm Raceme as a Promising Biomass Precursor for Activated Carbon to Promote Lipase Activity with the Aid of Eutectic Solvents

activated carbon

palm racemes

carbonization

lipases immobilization

hydrolysis

deep eutectic solvents

kinetics

Khalid M.

Adeeb

Amal A. M.

Hanee F.

Mohd Ali

Hassimi

Mahar Diana

Fathiah M.

Jehad

Ahmad GH

...Show More Authors

This study concerns the role of activated carbon (AC) from palm raceme as a support material for the enhancement of lipase-catalyzed reactions in an aqueous solution, with deep eutectic solvent (DES) as a co-solvent. The effects of carbonization temperature, impregnation ratio, and carbonization time on lipase activity were studied. The activities of Amano lipase from Burkholderia cepacia (AML) and lipase from the porcine pancreas (PPL) were used to investigate the optimum conditions for AC preparation. The results showed that AC has more interaction with PPL and effectively provides greater enzymatic activity compared with AML. The optimum treatment conditions of AC samples that yield the highest enzymatic activity were 0.5 (NaOH (

(7)

(6)

Publication Date

Mon Oct 01 2018

Journal Name

International Journal Of Biosciences

Detection of Escherichia coli O157 H7 isolated from infected dogs with urinary tract infections using real time - polymerase chain reaction

Mohammed A.K.

...Show More Authors

Publication Date

Tue Mar 04 2008

Journal Name

Journal Of Baghdad College Of Dentistry

Twelve months clinical comparison between modified Widman flap with or without enamel matrix derivative for the treatment of infrabony defects

saif

...Show More Authors

Publication Date

Sun Mar 15 2026

Journal Name

Journal Of Physical Education

The Effect of Proprioceptive Neuromuscular Facilitation Exercises Combined with Superset Pyramid on Maximal Strength in Classic Physique Athletes’ Lower Extremities

Haidar

Ghasan

...Show More Authors

View Publication

Publication Date

Sat Nov 02 2024

Journal Name

مجلة المستنصرية لعلوم الرياضة

The effect of some assistant means in developing the falling throw for people with disabilities in the Paralympic boccai game

وضاح محمد

حيدر صباح

...Show More Authors

Publication Date

Thu Feb 02 2012

Journal Name

Wasit Journal For Science And Medicine

Field study for the effect of releasing predator Chrysoperla carnea (Stephens) (Neuroptera:Chrysopidae) in comparison with Deltamethrin in controlling cabbage aphid

Hind Suhail Abdulhay

...Show More Authors

Publication Date

Sun Mar 01 2009

Journal Name

Journal Of Economics And Administrative Sciences

Calculate the sum of squares for parts (vehicles) SSE in 2n global trials with total integration In a suggested manne

كمال علوان

فراس احمد

...Show More Authors

In order to serve the field of knowledge in the field of design and analysis of experiments by adopting formulas and methods that are easy and simple in arithmetic work, especially in experiments that require many calculations for squares, including tests of type

View Publication

Publication Date

Sat Apr 01 2017

Journal Name

Journal Of Economics And Administrative Sciences

Use aggregate slide estimate additive splines estimation for the diagnosis of non-linear composite model self-regression with practical application

أنموذج الانحدار الذاتي اللاخطي مع متغير خارجي

التجميع

تقدير الشرائح

العقد الداخلية

التشخيص.

: NARX

Additive

Splines Estimation

Interior Knots

Identification.

فراس احمد

علي سلمان

...Show More Authors

Nonlinear time series analysis is one of the most complex problems ; especially the nonlinear autoregressive with exogenous variable (NARX) .Then ; the problem of model identification and the correct orders determination considered the most important problem in the analysis of time series . In this paper , we proposed splines estimation method for model identification , then we used three criterions for the correct orders determination. Where ; proposed method used to estimate the additive splines for model identification , And the rank determination depends on the additive property to avoid the problem of curse dimensionally . The proposed method is one of the nonparametric methods , and the simulation results give a

View Publication Preview PDF

1 2 ... 433 434 435 436 ... 2829 2830