Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userPerformance Evaluation of Distributed Storage Systems in Cloud Environment
تقييم أداء نظم التخزين الموزع في البيئة السحابية
1556
5 54
0.0
(
0
)
Added by
Tishreen University كتاب
Publication date
2019
fields
Informatics Engineering
and research's language is
العربية
Created by
shadi yousef
Ask ChatGPT about the research
في يومنا هذا يوجد العديد من الشركات التي تعمل على تخزين بيانات مستخدميها بشكل موزع بالاعتماد على عدة أنظمة تخزين , لكن مع ازدياد عدد المستخدمين وزيادة حجم البيانات الخاصة بهم كانت هذه الشركات أمام مشكلة كبيرة تتعلق بتأمين المساحة اللازمة لذلك كان لابد من تحسين تقنيات التخزين بحيث تحقق الأهداف المرجوَة وذلك بالاعتماد على توزيع البيانات على عناقيد من الخوادم ذات المواصفات العالية والمحمّل عليها نظم عالية الأداء.
No English abstract
References used
No references
rate research
Read More
Batteries are energy storage devices that are particularly useful for powering
small portable devices like phones, laptops and entertainment devices as well as
mobility devices that travel over the earth's surface, through water and air. During the
night, or during a period of low solar irradiation, energy is supplied to the load from
the battery in solar electrical Power Systems, and that provides Continuity of power
supply, and on the other hand boosts the Reliability of the system.
With the rapid growth of the size of the data stored in the cloud systems, the need for
effective data processing becomes critical and urgent. This research introduces a study of
the most important characteristics of databases management systems: H
ive, SQLMR, and
MariaDB Galera. Hive is a cloud database management system. SQLMR is a hybrid
system, which depends on the integration between the cloud and traditional systems
capabilities. While MariaDB Galera is a traditional database management system
developed to cope with the cloud characteristics. In this research, we show the most
important developments that have been on those systems, and then we compare their
performance in data processing based on the execution time of query operations with the
change of the volume of data. That is to identify the performance of those systems
practically and to know the developing requirements for access to optimized data
management system, and to help users in the selection of the database system that achieves
their requirements in terms of availability and scalability.
The objective of this work is to study and design a module of super capacitors for recovering the braking
energy in trolleybuses. The module of super capacitors is charged and discharged by Buck-Boost
converter that is reversible in current. The co
ntrol and the smoothing elements of the converter are
designed with taking into account the non-linear nature of super capacitors. To recover quickly the
braking energy, the module is charged with constant current, while the discharging is done with constant
voltage on the DC link of trolleybus. The module of super capacitors in its different operations (starting
up, powering auxiliary equipments, braking) is simulated in the SIMPLORER environment. As a result,
the different operating values (as voltage, current and temperature) are determined for the elements of
the studied module (diodes, IGBTs, capacitor, super capacitors). Finally, the failure rate and the
reliability of the module elements are estimated depending on the different operating factors. The module
faults is analyzed.
The Virtualization is the main structure, and the most important component from the
others cloud computing components. Due to the features which are produced only from
the virtual environment, such as flexibility, cost, energy saving, and the optim
al usage of
the resources, most business companies and the governments look ahead for deploying
their services and applications on virtual severs instead of the physical ones. That point
made the researchers heading toward performance comparing through different virtual
environments. For reaching the best possible environment which is suitable to be used in
the cloud computing, and to get the high performance computing. We described the effect
evolution of the virtual environment on the high performance computing as a service,
through changing the type of the used virtual environment in the infrastructures. We used
the virtual environment XEN-PV ( XEN-Paravirtualization) as an infrastructures for the
high performance. Lastly, I used the XEN-HVM (XEN HardWare virtual machine ), XEN
is the main hypervisor in Citrix company and the performance has been evaluated by
using DRBD as a shared storage of virtual disk. The results of our researches proved that
both the virtual environment, and the selected clustering charts have a visible, important
role in the performance of the “The high performance computing”.
There are many methods and suggestions proposed to improve the efficiency of
search in order to catch up with the increasing speed of information boom on the web.
Most of these proposals are concentrated on term frequency and page rank algorithms a
nd
yet very few of them focus on semantic relationship of content.
The objective of this research project is to provide a semantic relationship model that
can be used for semi-structured or unstructured information on the web to help improve the
accuracy and efficiency of search engine.
suggested questions
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
