scholarly journals Emulator for data analytics and IoT development projects

2020 ◽  
Vol 14 (1) ◽  
pp. 57-63
Author(s):  
Andrés Armando Sánchez Martin ◽  
Luis Eduardo Barreto Santamaría ◽  
Juan José Ochoa Ortiz ◽  
Sebastián Enrique Villanueva Navarro
Keyword(s):  
Data Analysis ◽  
Software Design ◽  
Design Patterns ◽  
Data Analytics ◽  
Object Oriented ◽  
Object Oriented Programming ◽  
Academic Environments ◽  
Software Design Patterns ◽  
Iot Devices

One of the difficulties for the development and testing of data analysis applications used by IoT devices is the economic and temporary cost of building the IoT network, to mitigate these costs and expedite the development of IoT and analytical applications, it is proposed NIOTE, an IoT network emulator that generates sensor and actuator data from different devices that are easy to configure and deploy over TCP/IP and MQTT protocols, this tool serves as support in academic environments and conceptual validation in the design of IoT networks. The emulator facilitates the development of this type of application, optimizing the development time and improving the final quality of the product. Object-oriented programming concepts, architecture, and software design patterns are used to develop this emulator, which allows us to emulate the behavior of IoT devices that are inside a specific network, where you can add the number of necessary devices, model and design any network. Each network sends data that is stored locally to emulate the process of transporting the data to a platform, through a specific format and will be sent to perform Data Analysis.

A Study of Database Connection Pool

2014 ◽  
Vol 556-562 ◽  
pp. 5267-5270
Author(s):  
Tai Fa Zhang ◽  
Ya Jiang Zhang ◽  
Jun Yao
Keyword(s):  
Software Design ◽  
Design Patterns ◽  
Object Oriented ◽  
Access Time ◽  
Research Topics ◽  
Object Oriented Design ◽  
Java Language ◽  
Software Design Patterns ◽  
Connection Pool ◽  
Access Efficiency

Nowadays, object-oriented design is the trend of software design patterns, and the database connection pool is one of the important research topics. The paper firstly describes the basic principle of connection pool under traditional, tomcat and hibernate modes. Based on that, a new connection pool method is proposed, and these four methods are experimentally simulated in java language at last. The comparative analysis has verified that the presented connection pool owns the optimum access time and it can greatly improve the access efficiency of database.

scholarly journals Оцінка використання шаблонів проектування програмного забезпечення

2021 ◽  
pp. 101-109
Author(s):  
Максим Олександрович Бичок ◽  
Ольга Костянтинівна Погудіна
Keyword(s):  
Software Development ◽  
Design Pattern ◽  
Design Patterns ◽  
Unified Modeling Language ◽  
Object Oriented ◽  
Object Oriented Programming ◽  
Practical Implementation ◽  
Design Paradigm ◽  
Life Cycle Development

The subject of study in the article is software development processes using design patterns. The aim is to improve the quality of modern software development projects through the use of experience and knowledge, to build software subsystems that are focused on infrastructure and work with an external client. Objectives: to review the methodology, programming paradigms and the possibility of their application at the design and coding stages of the software development life cycle; development of the concept of using design patterns in software design as knowledge available for reuse, propose an approach to the practical implementation of design patterns to node.js projects. The models used are the Composite design pattern, the Chain of responsibility design pattern. The used methodologies are object-oriented programming, as the most common programming paradigm, a unified modeling language UML for displaying the structure of design patterns. The following results are obtained. Modern methodologies and design paradigms are considered, a classification is formed in the form of a tree structure with a division into declarative and imperative subspecies, it is concluded that within the framework of the study we will use an object-oriented methodology as the most common design paradigm. An example of building an information system of the node.js project is considered. Analyzed the main errors that arise when developing and writing code for working with an external client. The elements of the node.js project and the concepts of structuring their relationship with existing design patterns are considered. An example of a practical implementation of a node.js project and its relationship with the Composite and Chain of responsibility design patterns is considered. In this connection, the work provides the structure of these templates. Findings. The scientific novelty of the results obtained is as follows: the model of design patterns was further developed through their use in the concept of building a node.js application, which makes it possible to improve the quality of interaction between the project team and reduce its execution time.

scholarly journals On the Usability of Object-Oriented Design Patterns for a Better Software Quality

2020 ◽  
Vol 20 (4) ◽  
pp. 36-54
Author(s):  
Boyan Bontchev ◽  
Emanuela Milanova
Keyword(s):  
Software Quality ◽  
Software Design ◽  
Design Patterns ◽  
Expert Knowledge ◽  
Object Oriented ◽  
Practical Experience ◽  
Object Oriented Design ◽  
Software Applications ◽  
Software Design Patterns ◽  
And Performance

AbstractSoftware design patterns incarnate expert knowledge distilled from the practical experience in object-oriented design, in a compact and reusable form. The article presents a quantitative study of the usability of the object-oriented software design patterns (known as Gang of Four patterns) applied for improving the testability, maintainability, extendibility, readability, reliability, and performance efficiency of software applications. We received 82 usable responses from software professionals in Bulgaria, with 65 of them addressing both the usability and recognition of each one of the Gang of Four patterns, together with their impact on important software quality characteristics. As well, we studied the approach of each software developer in choosing a particular design pattern to use in order to solve a problem. We found statistically significant differences between the most recognized and most useful patterns and between the most unrecognized and most useless patterns, split into creational, structural, and behavioral groups.

scholarly journals Analysis of the Impact of the Application of Design Patterns on the Maintainability of an Object Oriented System

2012 ◽  
Author(s):  
Isaias Alves Ferreira ◽  
Antônio Maria P. de Resende ◽  
Heitor A. Xavier Costa
Keyword(s):  
Best Practices ◽  
Software Design ◽  
Design Patterns ◽  
Software Metrics ◽  
Quality Factors ◽  
Legacy System ◽  
Software Design Patterns ◽  
The Impact ◽  
Oriented System

Software design patterns are the result of best practices that help minimize the recurring problems in systems development. Thus, this article examines how the application of design patterns has contributed to improving the maintainability, among other quality factors, a legacy system during it is refactoring. Improving the quality of the system was observed through a comparative analysis of software metrics applied to the legacy system and the system refactored.

Object-Oriented Software Design Patterns Applied to Management Theory

2010 ◽  
pp. 594-609
Author(s):  
Eric Tachibana ◽  
David Ross Florey
Keyword(s):  
Software Design ◽  
Design Pattern ◽  
Design Patterns ◽  
Object Oriented ◽  
It Outsourcing ◽  
Management Theory ◽  
It Management ◽  
Product Management ◽  
Software Design Patterns ◽  
It Managers

Since the mid to late 1990’s, object-oriented software design patterns have proven to be a powerful tool in support of software design and product management. However, the usefulness of the methodology need not be restricted to the technical domain alone. In fact, the design pattern methodology represents a powerful tool that can also be used in support of it management at a business level. In this paper, we discuss the design pattern methodology, provide an example of how the methodology could be implemented to solve a business problem, the multivariate vector map (mvm), and then apply the mvm pattern to the problem of choosing an it outsourcing strategy as a means to demonstrate its effectiveness to it managers and to it outsourcing vendors

Object-Oriented Software Design Patterns Applied to Management Theory

2009 ◽  
pp. 296-312
Author(s):  
Eric Tachibana ◽  
David Ross Florey
Keyword(s):  
Software Design ◽  
Design Pattern ◽  
Design Patterns ◽  
Object Oriented ◽  
It Outsourcing ◽  
Management Theory ◽  
It Management ◽  
Product Management ◽  
Software Design Patterns ◽  
It Managers

Since the mid to late 1990’s, object-oriented software design patterns have proven to be a powerful tool in support of software design and product management. However, the usefulness of the methodology need not be restricted to the technical domain alone. In fact, the design pattern methodology represents a powerful tool that can also be used in support of it management at a business level. In this paper, we discuss the design pattern methodology, provide an example of how the methodology could be implemented to solve a business problem, the multivariate vector map (mvm), and then apply the mvm pattern to the problem of choosing an it outsourcing strategy as a means to demonstrate its effectiveness to it managers and to it outsourcing vendors

scholarly journals Development and Implementation of a Distributed-Object Job-Execution Environment

2001 ◽  
Vol 9 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Rod Fatoohi ◽  
Lance Smith
Keyword(s):  
Software Design ◽  
Design Patterns ◽  
Binary Code ◽  
Object Oriented ◽  
Simulation Code ◽  
Distributed Object ◽  
Fine Grained ◽  
Computing Platform ◽  
Software Design Patterns ◽  
Execution Environment

This paper describes the development and implementation of a distributed job execution environment for highly iterative jobs. An iterative job is defined here as a binary code that is run multiple times with incremental changes in the input values for each run. An execution environment is a set of resources on a computing platform that can be made available to run the job and hold the output until it is collected. The goal is to design a complete, object-oriented execution system that runs a variety of jobs with minimal changes. Areas of code that are unique to a specific type of job are decoupled from the rest. The system allows for fine-grained job control, timely status notification and dynamic registration and deregistration of execution platforms depending on resources available. Several objected-oriented technologies are employed: Java, CORBA, UML, and software design patterns. The environment has been tested using a simulation code, INS2D.

JAVASCRIPT ASYNCHRONOUS PROGRAMMING

2019 ◽  
Vol 128 (2B) ◽  
pp. 5-16
Author(s):  
Tran Thanh Luong ◽  
Le My Canh
Keyword(s):  
Design Patterns ◽  
Source Code ◽  
Object Oriented ◽  
Exception Handling ◽  
Code Smells ◽  
Asynchronous Programming ◽  
Event Driven ◽  
Programming Patterns ◽  
The Impact

JavaScript has become more and more popular in recent years because its wealthy features as being dynamic, interpreted and object-oriented with first-class functions. Furthermore, JavaScript is designed with event-driven and I/O non-blocking model that boosts the performance of overall application especially in the case of Node.js. To take advantage of these characteristics, many design patterns that implement asynchronous programming for JavaScript were proposed. However, choosing a right pattern and implementing a good asynchronous source code is a challenge and thus easily lead into less robust application and low quality source code. Extended from our previous works on exception handling code smells in JavaScript and exception handling code smells in JavaScript asynchronous programming with promise, this research aims at studying the impact of three JavaScript asynchronous programming patterns on quality of source code and application.

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