Details

Publication Date

Tue Jun 30 2015

Journal Name

Al-khwarizmi Engineering Journal

Volume

11

Issue Number

3

Choose Citation Style

Statistics

Abstract Views

683

Statistics

Wavelength Division Multiplexing Passive Optical Network modeling Using Optical System Simulator

Passive Optical Network (PON)

Eye Height

Bit Error Rate (BER)

Quality factor (Q).

Nahla Abdulrahman

...Show More Authors

Abstract

Due to the continuing demand for larger bandwidth, the optical transport becoming general in the access network. Using optical fiber technologies, the communications infrastructure becomes powerful, providing very high speeds to transfer a high capacity of data. Existing telecommunications infrastructures is currently widely used Passive Optical Network that apply Wavelength Division Multiplexing (WDM) and is awaited to play an important role in the future Internet supporting a large diversity of services and next generation networks. This paper presents a design of WDM-PON network, the simulation and analysis of transmission parameters in the Optisystem 7.0 environment for bidirectional traffic. The simulation shows the behavior of optical fiber links when the signal passes through all the components such as optical fiber, splitters, multiplexers then find a good quality of signal in all receivers. The system performance is presented through various parameters such as BER analyzer and the Eye Diagram.

Keywords: Passive Optical Network (PON), Eye Height, Bit Error Rate (BER), Quality factor (Q).

View Publication

Publication Date

Fri Sep 30 2022

Journal Name

Journal Of Economics And Administrative Sciences

Comparison of Some Methods for Estimating the Survival Function and Failure Rate for the Exponentiated Expanded Power Function Distribution

توزيع دالة القوة الموسع الاسي

البقاء ومعدل الفشل

الإمكان الأعظم

المربعات الصغرى المطورة

نيوتن رافسون

Nelder maed.

Expanded Exponentiated Power function distribution

Survival and failure rate

Maximum likelihood

Developed least squares

Newton Raphson

Nelder mead.

Maysam

Emad

...Show More Authors

We have presented the distribution of the exponentiated expanded power function (EEPF) with four parameters, where this distribution was created by the exponentiated expanded method created by the scientist Gupta to expand the exponential distribution by adding a new shape parameter to the cumulative function of the distribution, resulting in a new distribution, and this method is characterized by obtaining a distribution that belongs for the exponential family. We also obtained a function of survival rate and failure rate for this distribution, where some mathematical properties were derived, then we used the method of maximum likelihood (ML) and method least squares developed (LSD)

View Publication Preview PDF

Publication Date

Wed Apr 01 2015

Journal Name

Journal Of Economics And Administrative Sciences

Evaluation of Drinking Waters’ projects in accordance with the standard Malcolm Baldrige Award for Excellence in the framework of total quality management / applied research in Water Department of Baghdad

إدارة الجودة الشاملة- جائزة مالكولم بالدريج للتميز- القيادة- التخطيط الاستراتيجي- الزبائن- إدارة العمليات- المشاريع

: Total Quality Management

Malcolm Baldrige Award for excellence

leadership

strategic planning

customer

operations management

projects

شهاب الدين حمد

احمد برهان

...Show More Authors

The research aims to evaluate the selected projects from the water Department of Baghdad, according to a standard for total quality management and to achieve this goal , adopted the case study method to get to know how close or turn away those projects in the management of Standard Malcolm Baldrige Award for Excellence in Quality Management its comprehensive one scales the world's most famous in this area , in order to draw a general framework to evaluate how project management can benefit from this approach to modern management , input from the entrances of the comprehensive management reform and development.

Be standard Malcolm Baldrige Award of several elements: - leadership , strategic planning , foc

View Publication Preview PDF

Publication Date

Tue Jun 30 2020

Journal Name

Journal Of Economics And Administrative Sciences

The role of strategic management accounting and its impact on the competitive advantage in Jordanian industrial companies

Strategic Management Accounting (SMA)

strategic cost concept

strategic pricing concept and brand concept

competitive advantage

realized profits

product quality

customer satisfaction

product development and market share

Jordanian industrial companies.

رائد محمد

...Show More Authors

This study aimed to recognize and understand the concept of strategic management accounting (SMA) and how it's the effect on the competitive advantage for industrial companies in Jordan. The study's importance arises due to the lack of Arab studies that dealt with this topic, in addition to the important and vital role of strategic management accounting on companies that represent the artery of the decision-making process, and to identify the benefits associated with SMA technology. The necessary data were collected through the literature review and theoretical study of the references that relevant to the study subject, in addition to a questionnaire developed for this purpose, the study used (124) out of (250) questionnaires tha

View Publication Preview PDF

Publication Date

Thu Aug 01 2019

Journal Name

Journal Of Economics And Administrative Sciences

مقارنة مقدرات بيز لدالة المعولية لتوزيع باريتو من النوع الاول باستعمال دوال معلوماتية مضاعفة مختلفة

Pareto type I distribution

reliability function

bayes method

double prior distributions (chi-gamma square distribution. gamma- erlang distribution

erlang exponential distribution

the squared error loss function.

توزيع باريتو من النوع الاول

دالة المعولية

طريقة بيز

الدوال المعلوماتية المضاعفة : توزيع مربع كاي- كاما

توزيع كاما - ارلنك

التوزيع ارلنك- الاسي

دالة الخسارة التربيعية.

جنان عباس

...Show More Authors

The comparison of double informative priors which are assumed for the reliability function of Pareto type I distribution. To estimate the reliability function of Pareto type I distribution by using Bayes estimation, will be used two different kind of information in the Bayes estimation; two different priors have been selected for the parameter of Pareto type I distribution . Assuming distribution of three double prior’s chi- gamma squared distribution, gamma - erlang distribution, and erlang- exponential distribution as double priors. The results of the derivaties of these estimators under the squared error loss function with two different double priors. Using the simulation technique, to compare the performance for

View Publication Preview PDF

Publication Date

Tue Dec 31 2019

Journal Name

Journal Of Economics And Administrative Sciences

Comparing Different Estimators for the shape Parameter and the Reliability function of Kumaraswamy Distribution

Kumaraswamy distribution

the shape parameter

reliability function

maximum likelihood

Bayes method

prior distributions (exponential distribution

chi-squared distribution and Erlang-2 type distribution)

the squared error loss function.

توزيع Kumaraswamy

معلمة الشكل

دالة المعولية

الإمكان الاعظم

طريقة بيز

التوزيعات الأولية (التوزيع الاسي

توزيع مربع كاي

توزيع ارلنك)

دالة الخسارة التربيعية.

Jinan Abbas

...Show More Authors

In this paper, we used maximum likelihood method and the Bayesian method to estimate the shape parameter (θ), and reliability function (R(t)) of the Kumaraswamy distribution with two parameters l , θ (under assuming the exponential distribution, Chi-squared distribution and Erlang-2 type distribution as prior distributions), in addition to that we used method of moments for estimating the parameters of the prior distributions. Bayes

View Publication Preview PDF

Publication Date

Sat Oct 01 2016

Journal Name

Journal Of Theoretical And Applied Information Technology

Factors affecting global virtual teams’ performance in software projects

Today the trend is to perform software development work via distributed geographical area among team

individual or even as an organization. However

due to the global market and international presence of many companies

there is a need to implement a global virtual teams. The global virtual team members are gradually engaged in globalized business environments across space

time and organizational boundaries via information and communication technologies. A global virtual team relies on communication

collaboration

and information exchange are the most important criteria in global virtual teams’ operations. The purpose of this paper is to answer two research questions. The first research question is to identify the factors affecting global virtual teams’ performance. A systematic literature review was conducted to answer the first research question. The second research question is on what the rank of the factor affecting the global virtual teams’ performance according to their level of effect on global virtual teams’ performance. Online survey was conducted within 103 developers and IT managers from eight IT companies to answer the second research question. The Statistical Package for Social Science (SPSS 22) was used to analyze the collected data. In this study

we investigated factors that affect global virtual teams’ performance

factors considered include cultural differences

language problems

time-zone differences

team size

technical problems

lack of trust

lack of sufficient training

and ICT problems. Also the findings indicated that lack of sufficient training is the highest level of effect on global virtual teams’ performance. On the other hand

Ali Yahya Gheni

...Show More Authors

(23)

Publication Date

Wed Nov 30 2016

Journal Name

International Business Management

ESTIMATE OF THE MULTIPLIER EFFECT OF THE MONETARY AND FISCAL POLICY ON NON-OIL GROSS DOMESTIC PRODUCT IN THE IRAQI ECONOMY FOR THE PERIOD OF 1990-2014

The monetary policy is a vital method used in implementing monetary stability through: the management of income and adjustment of the price (monetary targets) in order to promote stability and growth of real output (non-cash goals)

the tool of interest rate and direct investment guides or movement towards the desired destination

and supervisory instruments of monetary policy in both quantitative and qualitative. The latter is very important as a standard compass to investigate the purposes of the movement monetary policy in the economy. The public and businesses were given monetary policy signals by those tools. In fiscal policy

there are specific techniques to follow to do the spending and collection of revenue. This is done in order to actualize the adopted goals by the state and the relative closeness between monetary policy and fiscal policy objectives that requires relationship between two policies. Also

in order to achieve the goal of stability and promote economic growth within the tax multiplier. Multiplier of government spending is aiming at the goal of stability automatically and the allocation or distribution of economic stability through a basic introduction of the aim and objective of allocating resources to the required fields. In this vein

the objectives of the fiscal policy can be brought up spontaneously with the provisions of side and control effects which are in consonant with the outcome received in terms of economic cycle. The research showed that the impact of monetary policy in Iraq is insignificant on non-oil gross domestic product through a multiplier of monetary policy (K) and the flexibility of non-oil gross domestic product for money supply (E). Similarly

the impact of fiscal policy on non-oil gross domestic product through the fiscal policy multiplier (K) and the flexibility of non-oil gross domestic product for the government to spend are insignificant

أ.د. باسم

...Show More Authors

The monetary policy is a vital method used in implementing monetary stability through: the management of income and adjustment of the price (monetary targets) in order to promote stability and growth of real output (non-cash goals); the tool of interest rate and direct investment guides or movement towards the desired destination; and supervisory instruments of monetary policy in both quantitative and qualitative. The latter is very important as a standard compass to investigate the purposes of the movement monetary policy in the economy. The public and businesses were given monetary policy signals by those tools. In fiscal policy, there are specific techniques to follow to do the spending and collection of revenue. This is done in order to

Preview PDF

1 2 3 4 ... 674 675 676 677