The document discusses CORBA (Common Object Request Broker Architecture), which is a standard that allows software components written in different languages and running on different operating systems to communicate. CORBA uses IDL (Interface Definition Language) to define interfaces, and an ORB (Object Request Broker) to handle requests and responses between clients and servers. Key components of CORBA include IDL, GIOP/IIOP protocols, stubs/skeletons, the object adapter, and core services like the naming service.
Database systems that were based on the object data model were known originally as object-oriented databases (OODBs).These are mainly used for complex objects
Overview of Java RMI remoting.
RMI is a lightweight Java technology that provides access to remote methods, similar to RPC, but object-oriented. RMI basically provides remote object access for a client and object registration for servers.
RMI is both a Java API (java.rmi.* package) as well as a transport protocol definition for transporting RMI calls through a network.
RMI is a Java technology since it requires that client and server objects run in a JVM (Java Virtual Machine). By using IIOP as transport protocol, however, it is possible to connect RMI-clients to non-Java server objects (e.g. CORBA).
RMI defines the elements client, server, RMI registry where servers register their services and possibly a plain vanilla web server that can be used by clients to dynamically load object classes to access servers.
Chapter 2 The Object Model
2.1 The Evolution of the Object Model
2.2 Foundations of the Object Model
2.3 Elements of the Object Model
2.4 Applying the Object Model
Servlet is java class which extends the functionality of web server by dynamically generating web pages.
Servlet technology is used to create Dynamic web application. Servlet technology is robust and scalable. init() and service() methods are more important in life cycle of a servlet. doGet() and doPost() are methods used under service() method.
Coda (Constant Data Avaialabilty) is a distributed file system developed at Carnegie Mellon University . This presentation explains how it works and different aspects of it.
Distributed database system is collection of loosely coupled sites that are independeant of each other.
Distributed transaction model
Concurrency control
2 phase commit protocol
Database systems that were based on the object data model were known originally as object-oriented databases (OODBs).These are mainly used for complex objects
Overview of Java RMI remoting.
RMI is a lightweight Java technology that provides access to remote methods, similar to RPC, but object-oriented. RMI basically provides remote object access for a client and object registration for servers.
RMI is both a Java API (java.rmi.* package) as well as a transport protocol definition for transporting RMI calls through a network.
RMI is a Java technology since it requires that client and server objects run in a JVM (Java Virtual Machine). By using IIOP as transport protocol, however, it is possible to connect RMI-clients to non-Java server objects (e.g. CORBA).
RMI defines the elements client, server, RMI registry where servers register their services and possibly a plain vanilla web server that can be used by clients to dynamically load object classes to access servers.
Chapter 2 The Object Model
2.1 The Evolution of the Object Model
2.2 Foundations of the Object Model
2.3 Elements of the Object Model
2.4 Applying the Object Model
Servlet is java class which extends the functionality of web server by dynamically generating web pages.
Servlet technology is used to create Dynamic web application. Servlet technology is robust and scalable. init() and service() methods are more important in life cycle of a servlet. doGet() and doPost() are methods used under service() method.
Coda (Constant Data Avaialabilty) is a distributed file system developed at Carnegie Mellon University . This presentation explains how it works and different aspects of it.
Distributed database system is collection of loosely coupled sites that are independeant of each other.
Distributed transaction model
Concurrency control
2 phase commit protocol
DCOM (Distributed Component Object Model) and CORBA (Common Object Request Broker Architecture) are two popular distributed object models. In this paper, we make architectural comparison of DCOM and CORBA at three different layers: basic programming architecture, remoting architecture, and the wire protocol architecture.
COLLEGE BUS MANAGEMENT SYSTEM PROJECT REPORT.pdfKamal Acharya
The College Bus Management system is completely developed by Visual Basic .NET Version. The application is connect with most secured database language MS SQL Server. The application is develop by using best combination of front-end and back-end languages. The application is totally design like flat user interface. This flat user interface is more attractive user interface in 2017. The application is gives more important to the system functionality. The application is to manage the student’s details, driver’s details, bus details, bus route details, bus fees details and more. The application has only one unit for admin. The admin can manage the entire application. The admin can login into the application by using username and password of the admin. The application is develop for big and small colleges. It is more user friendly for non-computer person. Even they can easily learn how to manage the application within hours. The application is more secure by the admin. The system will give an effective output for the VB.Net and SQL Server given as input to the system. The compiled java program given as input to the system, after scanning the program will generate different reports. The application generates the report for users. The admin can view and download the report of the data. The application deliver the excel format reports. Because, excel formatted reports is very easy to understand the income and expense of the college bus. This application is mainly develop for windows operating system users. In 2017, 73% of people enterprises are using windows operating system. So the application will easily install for all the windows operating system users. The application-developed size is very low. The application consumes very low space in disk. Therefore, the user can allocate very minimum local disk space for this application.
Quality defects in TMT Bars, Possible causes and Potential Solutions.PrashantGoswami42
Maintaining high-quality standards in the production of TMT bars is crucial for ensuring structural integrity in construction. Addressing common defects through careful monitoring, standardized processes, and advanced technology can significantly improve the quality of TMT bars. Continuous training and adherence to quality control measures will also play a pivotal role in minimizing these defects.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
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Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
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Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
3. • CORBA is an abbreviation for Common
Object Request Broker Architecture
• Object Management Group, (OMG) formed
in 1989
• The Common Object Request Broker
Architecture (CORBA) is a standard
defined by the Object Management
Group (OMG) that enables software
components written in multiple
computer languages and running on
multiple computers to work together
(i.e., it supports multiple platforms).
4. Focus on integration of systems
and applications across
heterogeneous platforms
Thus CORBA allows applications
and their objects to communicate
with each other no matter where
they are and or who designed
them!!
5. • CORBA is just a specification for
creating and using distributed
objects
• CORBA is not a programming
language.
• CORBA is a standard (not a
product!)
• Allows objects to transparently
make requests and receive
responses
6. 6
Components Of CORBA
The main components of CORBA’s RMI
framework are:
1.An interface definition language known
as IDL.
2.An architecture.
3.The General Inter-ORB protocol (GIOP)
defines
• specifies formats for the messages
in a request-reply protocol.
• including messages for enquiring
about the location of an object, for
cancelling requests and for reporting
errors. •
7. 4.The Internet Inter-ORB protocol
(IIOP) defines a standard form for
remote object references.
• IIOP is GIOP implemented in
TCP/IP
• CORBA services - generic services
useful in distributed applications e.g.
Naming Service, Event Service.
8. CORBA Architecture
• The CORBA architecture is based on
the object model.
• A CORBA-based system is a collection
of objects that isolates the requestors
of services (clients) from the providers
of services(servers) by a well-defined
encapsulating interface.
• CORBA is composed of five major
components: ORB, IDL, dynamic
invocation interface(DII), interface
repositories (IR), and object adapters
(OA).
9. 9
CORBA Architecture
client server
proxy
or dynamic invocation
implementation
repository object
adapter
ORBORB
skeleton
or dynamic skeleton
client
program
interface
repository
Request
Reply
corecorefor A
Servant
A
• The CORBA architecture is designed to allow clients to
invoke methods in CORBA objects
clients and objects can be implemented in a variety
of programming languages
it has the following additional components
• object adapter, implementation repository and
interface repository
ORB core
The role of the ORB core is similar to that of the
communication module
In addition, an ORB core provides an interface that includes
the following:
- operations enabling it to be started and stopped;
- operations to convert between remote object references
and strings;
- operations to provide argument lists for requests using
dynamic invocation.
Dynamic invocation interface
In some applications (e.g. browsers), a client
without the appropriate proxy class may need to
invoke a method in a remote object.
CORBA does not allow classes for proxies to be
downloaded at run time as in Java RMI.
The dynamic invocation interface is CORBA’s
alternative. (we will discuss it later with the
Interface Repository)
Object adapter
–an object adapter bridges the gap between
CORBA objects with IDL interfaces and
the programming language interfaces of the
corresponding servant classes.
–it does the work of the remote reference and
despatcher modules
Skeletons
–skeleton classes (for OO languages) are
generated in the language of the server by an
IDL compiler.
–remote method invocations are dispatched via
the appropriate skeleton to a particular servant,
–the skeleton unmarshals the arguments in
request messages and marshals exceptions and
results in reply messages.
Client stubs/proxies
– these are in the client language.
– an IDL compiler for the client language uses an IDL
interface to generate one of the following:
for object-oriented languages the class of a proxy
for procedural languages a set of stub procedures.
– as before, the client stubs/proxies marshal the
arguments in invocation requests and unmarshal
exceptions and results in replies.
Implementation repository
activates registered servers on demand and locates
running servers
uses the object adapter name to register and
activate servers.
Interface repository
the interface repository provides information
about registered IDL interfaces to clients and
servers that require it.
•
10. 10
CORBA RMI
• CORBA RMI is a multi-language RMI
system.
• The term CORBA object is used to refer
to remote objects.
a CORBA object implements an IDL
interface, has a remote object
reference and its methods can be
invoked remotely.
•
11. • A CORBA object can be implemented
by a language without classes.
the class concept does not exist in
CORBA.
therefore classes cannot be defined
in CORBA IDL, which means that
instances of classes cannot be
passed as arguments
12. Object Request Broker (ORB)
• For objects to communicate across
the network, they need a
communication infrastructure named
Object Request Broker (ORB).
• Both client and object implementation
are isolated from the ORB by an IDL
interface.
13. • Clients see only the object’s interface,
never the implementation.
• To communicate, the request does
not pass directly from client to object
implementation,instead every request
is passed to the client’s local ORB,
which manages it.
15. CORBA Objects
• It is important to note that CORBA
objects differ from typical
programming objects in three ways:
• CORBA objects can run on any
platform.
• CORBA objects can be located
anywhere on the network.
• CORBA objects can be written in any
language that has IDL mapping.
16. CORBA works with interfaces
• All CORBA Objects are encapsulated
• Objects are accessible through interface
only.
• Separation of interfaces and
implementation enables multiple
implementations for one interface
17. Interface description language
(IDL)
• IDL is a specification language used
to describe a software component's
interface
• IDLs describe an interface in a
language-neutral way, enabling
communication between software
components that do not share a
language.
• for ex., between components written
in C++ and components written in
Java
18. Interface description language
(IDL)
• IDLs are commonly used in remote
procedure call software.
• In these cases the machines at either
end of the "link" may be using
different operating systems and
computer languages.
• IDLs offer a bridge between the two
different systems.
20. 1.Naming Service
-It is a binder that provides methods including
a) rebind for servers to register the remote
object references of CORBA objects by name
(e.g. rebind (path, Object)
b) resolve for clients to look them up by
name.these methods belong to an interface
called NamingContext
2.Transaction service and concurrency control
service
-TS provides flat or nested transactions
-CCS provides locking of CORBA objects
3.Persistent object service:
-for storing the state of CORBA objects in a
passive form and retrieving it
21. 21
•
4)Event Service and Notification Service:
-in ES suppliers and consumers
communicate via an event channel
-NS extends this to allow filtering and
typed events
5)Security service:
-authentication of principals and access
control of CORBA objects with policies
-auditing by servers, facilities for non-
repudiation
6)Trading service:
-allows CORBA objects to be located by
attribute
22. Advantages of CORBA
• Object Location Transparency:-
The client does not need to know where an object
is physically located. An object can either be
linked into the client, run in a different process on
the same machine, or run in a server on the other
side of the planet.
• Server Transparency:-
The client is, as far as the programming model is
concerned, ignorant of the existence of servers.
The client does not know (and cannot find out)
which server hosts a particular object, and does
not care whether the server is running at the time
the client invokes a request.
23. Advantages of CORBA
• Language Transparency :-
Client and server can be written in different
languages. A server can be implemented in a
different language without clients being aware
of this.
• Implementation Transparency :-
The client is unaware of how objects are
implemented. A server can use ordinary flat
files as its persistent store today and use an
OO database tomorrow, without clients ever
noticing a difference (other than performance).
24. Advantages of CORBA
• Architecture Transparency :-
The architectures are hidden from both clients and
servers. A client can communicate with a server
with different alignment restrictions.
• Operating System Transparency:-
Client and server are unaffected by each other's
operating system. In addition, source code does
not change if you need to port the source from one
operating system to another
25. Advantages of CORBA
• Protocol Transparency :-
Clients and servers do not care about
the data link and transport layer. They
can communicate via token ring,
Ethernet, wireless links, ATM
(Asynchronous Transfer Mode), or any
number of other networking
technologies.