Integrated production strategy and reuse scenario: A CoFAQ model and case study of mail server system development

Omega ◽  
2013 ◽  
Vol 41 (3) ◽  
pp. 536-552 ◽  
Author(s):  
Jiafu Tang ◽  
Wu Zhiqiao ◽  
C.K. Kwong ◽  
Xinggang Luo
Keyword(s):  
System Development ◽  
Integrated Production ◽  
Mail Server ◽  
Production Strategy ◽  
Server System

scholarly journals Performance Comparison of Asymmetric Cryptography (Case study- Mail message)

2019 ◽  
Vol 4 (3) ◽  
pp. 105-111
Author(s):  
Zarni Sann ◽  
Thi thi Soe ◽  
Kaythi Wyut Mhone Knin ◽  
Zin May Win
Keyword(s):  
Computation Time ◽  
Performance Comparison ◽  
Sql Server ◽  
Sensitive Data ◽  
Rsa Algorithm ◽  
Mail Server ◽  
C Programming ◽  
Elgamal Encryption ◽  
Server System

Encryption is a well known technology for protecting sensitive data. ElGamal encryption and RSA algorithm is made before storing mails to mail server. ElGamal decryption and RSA decryption is made after retrieving mails from mail server. This system is implemented to secure mail server system for local government’s important mail messages. These algorithms consume a considerable amount of time and resources such as memory, CPU time, and computation time to encrypt and decrypt data. In this paper, the results are comparison of these algorithms in term of encryption time, decryption time, and memory usage over variable file sizes. After processing, it is proven that RSA performs a faster encryption process than ElGamal. However, ElGamal decryption process is faster than RSA. This system is also expressed comparison of storage Size between RSA and ElGamal. Both of these algorithms are cryptographic public-key algorithms but have functions in different ways. This system is using C# programming language and SQL Server to store mail messages.

scholarly journals Performance comparison of asymmetric cryptography (case study-mail message)

2020 ◽  
Vol 4 (3) ◽  
pp. 105-111
Author(s):  
Zarni Sann ◽  
Thi Thi Soe ◽  
Kaythi Wyut Mhone Knin ◽  
Zin May Win
Keyword(s):  
Data Encryption ◽  
Performance Comparison ◽  
C Programming Language ◽  
Cpu Time ◽  
Asymmetric Cryptography ◽  
Mail Server ◽  
C Programming ◽  
Elgamal Encryption ◽  
Server System

Data encryption is well known as essential for today’s technology. ElGamal encryption and RSA algorithmis made before storing mails to mail server. ElGamal decryption and RSA decryption is made after retrieving mailsfrom mail server. This system is implemented to secure mail server system for local government’s important mailmessages. These algorithms consume a considerable amount of time and resources of memory, CPU time, andcomputation time to encrypt and decrypt data. This paper discuss the results comparison of these algorithms in termof encryption time, decryption time, and memory usage over variable file sizes. The results show that RSA does fasterencryption process in compare with ElGamal. However, ElGamal decryption process is quicker than RSA. This systemis also expressed comparison of storage Size between RSA and ElGamal. Both of these algorithms are cryptographicpublic-key algorithms but have roles in different techniques. This system is using C# programming language and SQLServer to store mail messages.

Implementation of Booking Performance Application Using Bootstrap Case Study in PT XYZ

2019 ◽  
Vol 4 (1) ◽  
pp. 10
Author(s):  
Arfan Sansprayada ◽  
Kartika Mariskhana
Keyword(s):  
Information System ◽  
Business Processes ◽  
System Development ◽  
Basic Requirement ◽  
Application Development ◽  
Information System Development ◽  
Special Expertise ◽  
A Company ◽  
Need For Information

Abstract—The need for information system development in a company is a basic requirement that must be met by each company in order to run its business processes properly. This is the basic key in a company in order to provide maximum results to find as many profits or profits. Application development or requirements in the application also provide speed for employees to carry out their activities to work properly and optimally. The development of the era requires that companies must be productive and have innovations so that the business wheel of the company can run well. This is based on the development of technology that is so fast that it requires special expertise in its application. This research is expected to be able to help some problems that exist in a company. Where its application can make it easier for employees to carry out their respective duties and roles in order to maximize their potential. For companies, the application of this application can accommodate the company's business wheels so that they can be properly and correctly documented .   Keywords : Systems, Information, Applications

Application of Modified Ecological Footprint Model: A Case Study of Tibet, China

2013 ◽  
Vol 295-298 ◽  
pp. 987-991
Author(s):  
Guan Nan Cui ◽  
Xuan Wang
Keyword(s):  
Economic System ◽  
Carrying Capacity ◽  
Ecological Footprint ◽  
System Development ◽  
Energy Resources ◽  
Emergy Analysis ◽  
Development Index ◽  
Footprint Model ◽  
Ecological Carrying Capacity

To improve the ecological footprint model in aspect of reflecting sustainability of the economic, social and technological, the emergy analysis and socio-economic system development index were introduced into the model. The modified ecological footprint model was applied in the calculation of ecological carrying capacity and ecological footprint in Tibet, China. The ecological carrying capacity/cap is 19.13hm2, and the ecological footprint/cap is 8.96hm2. The result shows that the Tibet region is under the condition of ecological surplus and it is suitable for further programs development to some extent. But the high proportion of energy resources, cement and fertilizer utility should draw attention during the exploitation or construction progress.

Fuel Insert Shuffler: A Case Study of Expert System Development

1988 ◽  
pp. 625-633 ◽  
Author(s):  
Joseph Naser ◽  
Robert Colley ◽  
John Gaiser ◽  
Thomas Brookmire ◽  
Steven Engle
Keyword(s):  
Expert System ◽  
System Development

A Computational Product Model for Conceptual Design Using SysML

2009 ◽  
Author(s):  
Stefan Wo¨lkl ◽  
Kristina Shea
Keyword(s):  
Product Development ◽  
Conceptual Design ◽  
Mechanical Design ◽  
System Development ◽  
Concept Design ◽  
Product Modeling ◽  
Product Model ◽  
Mechatronic Systems ◽  
Starting Point

The importance of the concept development phase in product development is contradictory to the level and amount of current computer-based support for it, especially with regards to mechanical design. Paper-based methods for conceptual design offer a far greater level of maturity and familiarity than current computational methods. Engineers usually work with software designed to address only a single stage of the concept design phase, such as requirements management tools. Integration with software covering other stages, e.g. functional modeling, is generally poor. Using the requirements for concept models outlined in the VDI 2221 guideline for systematic product development as a starting point, the authors propose an integrated product model constructed using the Systems Modeling Language (SysML) that moves beyond geometry to integrate all necessary aspects for conceptual design. These include requirements, functions and function structures, working principles and their structures as well as physical effects. In order to explore the applicability of SysML for mechanical design, a case study on the design of a passenger car’s luggage compartment cover is presented. The case study shows that many different SysML diagram types are suitable for formal modeling in mechanical concept design, though they were originally defined for software and control system development. It is then proposed that the creation and use of libraries defining generic as well as more complicated templates raises efficiency in modeling. The use of diagrams and their semantics for conceptual modeling make SysML a strong candidate for integrated product modeling of mechanical as well as mechatronic systems.

scholarly journals Object Oriented VS Structured Analysis and Design in System Development Courses

2019 ◽  
Vol 8 (6S3) ◽  
pp. 82-88
Keyword(s):  
System Analysis ◽  
Survey Methodology ◽  
System Development ◽  
Object Oriented ◽  
Analysis And Design ◽  
Institutions Of Higher Learning ◽  
Structured Analysis ◽  
The One ◽  
Structured Analysis And Design

Objectives: The main aim of this study was to investigate the factors that influence students’, academicians’, clients’, as well as developer’s preferences in choosing their preferred approach in system development, namely structured analysis design (SAD) or object-oriented analysis and design (OOAD). Methods: The research design was based on a survey methodology and a case study. For the survey, questionnaires were administered to 30 students and 38 academicians, who were randomly selected from several Malaysian universities. For the case study, the requirements of the information system were modeled and presented to several clients to elicit their feedback. The survey data were analyzed using SPSS Findings: The result shows that students preferred the use of OOAD approach, which clearly outnumbered those who preferred the SAD approach, which stood at 33%. Interestingly, the majority (53%) of academicians preferred the use of a mixture of both approaches. Likewise, the clients shared a similar view with the academicians, whereas the developer preferred the OOAD approach. Application/Improvements: Clearly, the findings suggest that both approaches are essential, but the one that is widely used by developers and preferred by students is OOAD, and thus should be given priority when it comes to structured analysis and design. As such, curriculum designers and institutions of higher learning, particularly those offering system analysis and design and related courses, should make the necessary changes to the existing curriculum such that the academic programs offered will be able to produce highly competent and skilled analysts and designers as required by the industry.

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