Efficient Data Organisation in Distributed Computer Systems using Data Warehouse

pattern recognition in maintenance data using methodologies data minitng (cade study isfahan regional power electric company)

فعالیت های نگهداری و تعمیرات اطلاعاتی را تولید می کند که می تواند در تعیین زمان های بیکاری و ارایه یک برنامه زمان بندی شده یا تعیین هشدارهای خرابی به پرسنل نگهداری و تعمیرات کمک کند. وقتی که مقدار داده های تولید شده زیاد باشند، فهم بین متغیرها بسیار مشکل می شوند. این پایان نامه به کاربردی از داده کاوی برای کاوش پایگاه های داده چندبعدی در حوزه نگهداری و تعمیرات، برای پیدا کردن خرابی هایی که موجب...

Data Security Management in Distributed Computer Systems

This research deals with data security management in distributed and client/server computer systems, placing special emphasis on access security. The paper presents the subject of data security management in these systems by describing them, examining their vulnerable points and presenting adequate solutions. The paper includes a survey on the subject of authorization, authentication, encryptio...

Interoperable Distributed Data Warehouse Components

Extraction, Transformation and Loading (ETL) are the major functionalities in data warehouse (DW) solutions. Lack of component distribution and interoperability is a gap that leads to many problems in the ETL domain, because these ETL components are tightly-coupled in the current ETL framework. Furthermore, complexity of components extensibility is another gap in the ETL area, because of the sa...

Efficient location by using data envelopment analysis

So far, many types of location models have been developed to find optimal spatial patterns according to different spatial metrics such as cost, coverage and availability.  The initial focus of these models is on the location availability of service providers and demand estimates, and some of these models are within the framework of multi-objective programming models.  After the advent of scienc...

Using Abstract State Machines for Distributed Data Warehouse Design