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jeasiq-287
Robust Estimations for power Spectrum in ARMA(1,1) Model Simulation Study
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Simulation Study

 

Abstract :

Robust statistics Known as, Resistance to mistakes resulting of the deviation of Check hypotheses of statistical properties ( Adjacent Unbiased  , The Efficiency of data taken from a wide range of probability distributions follow a normal distribution or a mixture of other distributions with different standard deviations.

 power spectrum function lead to, President role in the analysis of Stationary random processes, organized according to time, may be discrete random variables or continuous. Measuring  its total capacity as frequency function.

Estimation methods Share with the concept of nonparametric in the absence of a model with clearly defined parameters (Free distribution) part with the distributed according to the Normal distribution, while the other part is unknown distribution, and thus it became the distribution of tainted its parameters is  unknown, so it can be considered the Robust Methods is the highest level in grades nonparametric methods which is will be based on the conversion calculable test to a Standard formula Conducted by the convergence operations.

The aim of the Search finding the best estimator of Power spectrum With the mixed ARMA (1,1) model for time series follow a Normal distribution. By Using Simulation experiments, on samples [n=50,100,150,200,250],and Different virtual values for و θ . It has been Showen  in tables 1,2,3 The Obvious difference between all the initial default values and generated values , Which may give results far from the real system results.

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Publication Date
Sat Jul 01 2023
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
Judicial Accounting and its impact on the outcome of the activity of the Iraqi General Insurance Company: applied research
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The research aims to shed light on the importance of forensic accounting and its impact on the outcome of the activity of the Iraqi general insurance company by winning the lawsuits filed against the company because the forensic accountant (the judicial expert) possesses the ability to interpret and analyze the data. The research community represents the insurance companies in Iraq. Iraqi insurance, and the researchers adopted the descriptive approach in covering the theoretical aspect and the deductive approach in covering the practical side, depending on the financial statements of the Iraqi insurance company for the years of research.

One of the most important conclusions reached by the researchers was that forensic accounting

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Publication Date
Sun Jul 03 2005
Journal Name
Political Sciences Journal
عرض رسائل واطاريح (اثر التواجد العسكري الامريكي على النظام السياسي في العراق)
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اثر التواجد العسكري الامريكي على النظام السياسي في العراق

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Publication Date
Mon Nov 01 2021
Journal Name
Jornal Of Al-muthanna For Agricultural Sciences
تأثير نضم الحراثة المختلفة في انتاجية المياه للحنطة تحت التسوية الليزرية للارض
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نُفذت تجربة حقلية في أحد الحقول التي تقع على خط عرض 1333 59.93 شمالاً، وخط طول 37.913744" شرقاً، وعلى ارتفاع 31 م فوق مستوى سطح البحر خلال الموسم الخريفي لسنة 2018م لمعرفة تأثير نظم الحراثة المختلفة في إنتاجية الماء ونمو وحاصل الحنطة تحت التسوية الليزرية للارض ، استعملت في التجربة ثلاث معاملات المعاملة الأولى: الآت الحراثة وبمستويين هما المحراث المطرحي (T)، والمحراث الحفار (T2). إمَّا المعاملة الثانية نسبة انحدار تسوية سطح

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Publication Date
Sun Apr 06 2014
Journal Name
مجلة البحوث التربوية والنفسية
الذكاء الروحي لدى عينة من طلبة جامعة بغداد في ضوء بعض المتغيرات
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هدف البحث التعرف على الذكاء الروحي لدى عينة من طلبة جامعة بغداد فضلا عن التعرف على الفروق بين الطلبة في الذكاء الروحي وفق متغير النوع ( الذكور- الإناث) ، ومتغير التخصص الدراسي ( علمي – إنساني) ومتغير المرحلة الدراسية ( المرحلة الأولى-المرحلة الرابعة) تألفت عينة البحث من (300) طالباً وطالبة ، وتم تطبيق - مقياس الذكاء الروحي وهو ( من إعداد الباحثة) ، وقد اسفرت نتائج البحث عن:--إن طلبة جامعة بغداد( عينة البحث) تمتعوا بمست

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Publication Date
Mon Jan 23 2023
Journal Name
Arab Science Heritage Journal
العلاقات السياسية والعسكرية للإمارة العلوية في طبرستان مع الإمارة الطاهرية والصفارية والسامانية
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The stage of the establishment of the Alawite state in tabaristan was one of the most important stages in the history of the Shiite sect in Iran

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Publication Date
Tue Nov 06 2018
Journal Name
Arab Science Heritage Journal
الوسائل الوسائل العلاجيّة الطريفة في التراث العلمي العربي استعمال الأنغام الموسيقية أنموذجاَ
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       The scientific heritage is an essential part of the civilization of nation , so Nations has focused on this aspect in the construction of civilization. So the Arab prosperous scientific achievements is no exception to this general rule in being an integral part of the composition of the Arab- Islamic civilization part ,and when we read in the Arab –Islamic medicine books ,we find the genius of the Arab and Muslims physicians and their own new methods of treatment they use music melodies in medication and treatment of patients

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Publication Date
Sat Dec 29 2018
Journal Name
Journal Of Planner And Development
اهمية تطبيق المعايير التخطيطية للفضاءات المفتوحة والخضراء ودورها في التخطيط الافضل للمدن
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Publication Date
Wed Dec 01 2021
Journal Name
Journal Of Economics And Administrative Sciences
THE MEDIATING ROLE OF PRODUCT INNOVATION ON THE RELATIONSHIP BETWEEN MARKETING INFORMATION SYSTEM AND CUSTOMER ORIENTATION
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 Marketing information system (KMIS) is an essential factor of developing business’ performance and getting sustainable success. The main goal of the research is to measure effect of MIS on customer orientation and product innovation. Also, another goal is to analyze the mediation role of product innovation in relationship MIS and customer orientation. This study sought to analyze the marketing information system and measure its effect on the customer orientation and product innovation. The data of the study were collected using questionnaire. The data were analyzed using statistical tools and SPSS programming. The results of the study showed that the KMIS can positively and significantly effect product innovation. Also, t

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Publication Date
Fri Aug 15 2008
Journal Name
اطروحة دكتوراه
الاقليمية الدولية الجديدة في عالم ما بعد الحرب الباردة : انموذج آسيا الباسفيك
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The thesis discusses the concept of the new international regionalism that emerged after the growing effects and repercussions of globalization with its economic, political and security dimensions after the end of the Cold War and the crystallization of a different international system dominated by the United States of America, so that the major countries and actors in the international system realize the danger of globalization and move towards adopting regional arrangements to contain the negative effects of globalization. The Asia-Pacific model was chosen as a model for the study.

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Publication Date
Tue Jun 30 2015
Journal Name
Iraqi Journal Of Market Research And Consumer Protection
Raised excessive consumption on environment and price levels during the period 2005- 2013.: Raised excessive consumption on environment and price levels during the period 2005- 2013.
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When the financial resources of individuals and groups available, this will lead to increase the consumption ranges and sometimes reached to excessive especially to the categories that have little awareness about economic importance and its reflections. it seems that consumerism has increased in many countries including Iraq because of many factors, and the most important one is the availability of financial resources as a result of the increase in oil exports as well as the spread of consumption media department at various levels especially.

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