Using Box-Jenkins Methodology for Forecasting labor Productivity in commercial bank of Syria – Jabla branch

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

A study about dual representation of finite groups

In this paper, We study the dual representation. We proved that if p is completely redusibile, decomposable and unitary then p* is completely redusibile, decomposable and unitary,

Spatial -Temporal variations of the carbon dioxide system in the surface seawater of Tartous city

This research focuses on identifying spatial and temporal variationsof the carbon dioxide system in the surface seawater of Tartouscityduring the period betweenspring and summer 2015.In Addition to the extent influenced by some hydrological properties of water (temperature and salinity) and the impact all of this on the pH of marine water values. The results showed low partial pressure of the carbon dioxide in seawaters (PCO2 sea) in the summercompared with spring, which is reflected on the air-sea flux values (FCO2), where CO2 released from surface seawater to the air in summer and incontradiction of that in the spring (0.0632mmol /m²/ day and -0.0715 mmol /m²/day, respectively). In spring, low temperature and salinity of the water (22.707-22.727C and 37.605-37.765‰ respectively), in addition to increased biological activity contributed in increasing the absorption of CO2 from the water.These leading to a decrease PCO2 sea (409.0- 429.5μatm) associated with low concentrations of all of the total inorganic carbon (2229.5- 2242.5μmol/kg) and total alkalinity (2588.873-2590.9μmol/kg). and as a result the surface sea waters become a reservoir of dioxide carbon atmospheric. In the summer, the rise in temperature and salinity of surface seawater (28.85- 29.60Cand38.15-38.60‰, respectively) and reduced biological activity all contributed to the decrease dissolved CO2 values and increase of PCO2 sea(437.5 - 453.5μatm) associated with increasing concentrations of each of the total inorganic carbon (2267.9 - 2296.0μmol/kg) and total alkalinity (2739.6 -2741.2μmol/kg).In this way the surface sea water is source of carbon dioxide to the atmosphere.

Nature of the problem of hegel

Find sheds light on the problem perhaps more importantly, the total problems that we find in the history of philosophy , and is not a problem of nature Our research is trying to explore the meaning of the nature of the Beginnings, As we will try to, In this research dealt with the nature of the problem of the two sides Systematic and cognitive To find out the key points of the nature of the problem when the philosophers of the seventeenth century To try to adjust the nature of the problem in its historical context As we will try in this research shed light on the relationship between nature and other problems In the philosophy of Hegel, such as the relationship , for example, between nature and logic, nature and absolute idea. Is Hegel was able to solve the problem of nature and its relationship with the various aspects of his philosophy؟ Or is it Al this problem and do so by him Kant There is also in our many other problems discussed by Hegel with nature problem.

Evaluation of Some Factors Affecting the Usage of Removable Partial Dentures in Patients of Undergraduate Students of Damascus University

Factors affecting the usage of removable partial dentures (RPDs) are still controversial. Since the RPD usage is partly related to patients’ personality, variations among different population is expected. This study aimed to evaluate the factors that influence the RPDs denture usage in patients of undergraduate students of Damascus University by using telephone call one-year after delivery.