التعرف على نمط تغير الانتاجية من أجل بناء نموذج يساعد على التنبؤ بقيم الانتاجية, و قد تم الاعتماد على منهجية بوكس و جينكنز من خلال تطبيق الأساليب و الاختبارات الإحصائية المتعلقة بالسلاسل الزمنية مثل اختبار ADF , PP, KPSS وQ statلنكتشف أن السلسلة غير مستقرة, و لتصبح السلسلة مستقرة تم أخذ الفرق الأول و تم التأكد من استقرارها باعتماد الاختبارات السابقة نفسها, و بعدها تم ترشيح مجموعة من النماذج المعبرة عن السلسلة الزمنية بالاعتماد على شكل انتشار دالتي الارتباط الذاتي ACF و الارتباط الذاتي الجزئي PACF, و بعد المفاضلة بين عدة نماذج مرشحة تم اختيار أفضلها بتطبيق بعض المعايير الاحصائية مثل MSE , BIC, تم اختيار أفضل نموذج معبر عن السلسلة الزمنية و هو النموذج ARIMA(1,1,1). و تم التأكد من معنوية معاملاته باستخدام اختبار LjungBox , و بعدها تم التنبؤ بإنتاجية العمل لمدة ثلاثين يوم عمل قادمة.
The objective of this research is to analyze the time series of labor productivity in the
Commercial Bank of Syria for a period of ninety days. The pattern of change in
productivity is identified in order to construct a model that helps predict the values of
productivity.
So we used Box Jenkins models in this study by using statistical methods Such as the
ADF, PP KPSS and Q stat tests to detect that the series is Non stationary, but when the first
difference was taken, the series becomes stationary, and confirmed by the same previous
tests.
A series of time series models were then filtered based on Autocorrelation (ACF) and
Partial Autocorrelation(PACF).
After selecting between several candidate models, by applying some statistical
methods such as MSE and BIC, we selected the best time series model ARIMA (1,1,1).
The significance of its coefficients was determined using t
References used
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KARIM, R; AWAL, A; and AKTER, M."forecasting of wheat production in Bangladesh". Bangladesh Journal Agricultural Researches, 35(1), Bangladesh, 2010
العشعوش، أيمن. العربيد، عدنان. الاقتصاد القياسي. جامعة تشرين، سوريا،2015
The commercial bank of Syria produces various banking services, and its branches trying to gratify its clients, and attracting new clients.
It is trying to achieve its clients every time, and to inquire this ideal, it confronts many problems, one of
The velocity and direction of the wind greatly affect marine navigation and the
movement of merchant ships in harbors, It also affects the rapid movement of pollutants
into the air from industrial cities to agricultural and residential areas.
The
The research aims at finding out the role of the electronic banking services provided
by the Commercial Bank of Syria in increasing customers' satisfaction, as well as focusing
on customers' satisfaction because of its importance and its role in ac
The researcher found that the process of organizational change is
affected by the levels of administrative creativity.
The general index of the financial market of the important
economic indicators in any country is being reflects the
economic situation and economic activity in the country, so
attention must be appropriate methods for predicting the
performance o