Object-oriented Programming Concepts Research Articles

МЕТОДИКА ФУНДАМЕНТАЛІЗОВАНОГО НАВЧАННЯ ОБ’ЄКТНО-ОРІЄНТОВАНОМУ ПРОГРАМУВАННЮ МАЙБУТНІХ ФАХІВЦІВ У ГАЛУЗІ ІНФОРМАЦІЙНИХ ТЕХНОЛОГІЙ

The article is devoted to the problem of improving the quality of teaching of the object-oriented programming for future specialists in the field of information technologies based on fundamentalization of education.The conditions of fundamentalization of the object-oriented programming’s learning, a content for the future IT specialists are determined. The first condition of fundamentalization is that the content of learning the object-oriented programming should contain the concepts about past, current and future technologies and methods of creating the software products, as well as the general-scientific and industry-specific fundamental laws and categories. The list of basic concepts of object-oriented programming and basic general-scientific and branch laws and categories for their substantiation is given. The second condition of fundamentalizing the content of learning the object-oriented programming is the presentation of basic concepts indicating the purpose, structure, principle of action, characteristics and the fundamental general-scientific and branch laws and categories. The third condition of the fundamentalization of education is the provision of productive educational and cognitive activity of students, which reflects the process of designing, modeling and developing the new or improved existing software, both in practical and in lecture classes. The organization method of productive educational and cognitive activity of students during lectures and practical classes is described. The method and didactic means of training for the improvement of existing ones and the creation of new IT products are developed. The implementation of the method and didactic means for improving the basic IT product during the learning of object-oriented programming during the lecture classes is considered on the example of the topic “Organization of inheritance mechanisms in classes”. An example of applying the method of creating new IT products for organizing the productive educational and cognitive activity of students at practical classes during the studying of the topic “The concept of virtual functions and polymorphism” is given. Consequently, the goals, content, methods and didactic means of learning the object-oriented programming based on the fundamentalized approach will allow students to develop the professional competence of IT professionals to perform the productive professional activities in designing and creating new computer software.

Implementasi Greenfoot 3.0.4 Untuk Membangun Aplikasi Pengucapan Bahasa Inggris Pada Arrobbany Course

Arrobbany English Courses is an institutions which have only a single manager and tutor in guiding 67 students consisting of students from primary and secondary school level. In teaching and learning tutor often have difficulty in establishing a nice environment for some students would rather play than on learning. This causes the limited learning topic that can be delivered to students tutor each meeting. Therefore, it needs the right solution and does not incur costs to add a tutor or a native speaker, using a medium of learning. One of the media to learn the most widely used today is the computer as a proven way to speed up the delivery of learning topic and increase student interest.
 In this study Aplikasi Pembelajaran Bahasa Ingris is built to help tutor show the right pronoun to the students. Sound of pronoun will sounded when the picture clicked. There are seven learning menus in this application. Application development using Greenfoot with object-oriented programming concepts. Method development using SDLC, UML design and testing method using the Black-box testing. English Language Learning application is compiled into .jar extensions which can be run on the Windows operating system which have been installed JDK.
 Based on testing to 23 students indicates that the Aplikasi Pembelajaran Bahasa Ingris is exciting, produce the proper sound, and can replace the native speaker. The result of the assessment shows that average percentage are more than 82%.

Implicit in the development of parallel programming language using Visual Basic

Several studies have been performed to investigate the benefits of parallel programming models, and compared the models with same language family. The parallel technique is applicable only when the programmer has a single computer with multiple processors to perform various tasks individually or the programmer number of different computers connected by a single network. Parallel programming model in computing is an idea of parallel computer architecture. This research introduced the concept of parallel programming models and languages. The present research mainly focused on the different parallel programming models proposed by previous researchers using distinct programming languages. Through analyzing the strengths and weaknesses of various programming models used for parallel computing, a new model is developed. Along with this, the concept of OOP (Object-oriented programming) in the context of parallel computing is also discussed. This research proposed a model named as Asynchronous Dynamic load Balancing (ADLB). ADLB model used MPI as avehicle for library implementation rather as an end-user programming system.

Electrochemical Synthesis of Ethanol from Carbon Dioxide Using Copper and Carbon-Polyvinyl Chloride (C-PVC) Electrode

There is a significant number of unpublished research by university lecturers and students about Gorontalo’s local medicinal plants that have contributed to the insufficiency of information to the society regarding the benefits of local medicinal plants. Moreover, the public lacks digital backup and documentation of the medicinal plants referred. This research aims to create a web database of Gorontalo’s local medicinal plant, by comprising waterfall method of software engineering approach. The waterfall method involves four steps. The first step is system requirement analysis through preliminary study and observation based on field study and library research. The second is system design, by context diagram and system architecture designs, i.e., use case diagram, class diagram, activity diagram, and database design. The third is coding using PHP programming language by OOP (object oriented programming) concept and MVC (model view controller) architecture. The last step is system test using the black-box testing method. The result shows that the web application designed is able to operate properly.

Designing Web Database Application for Local Medicinal Plants of Gorontalo Using MVC Architecture

There is a significant number of unpublished research by university lecturers and students about Gorontalo’s local medicinal plants that have contributed to the insufficiency of information to the society regarding the benefits of local medicinal plants. Moreover, the public lacks digital backup and documentation of the medicinal plants referred. This research aims to create a web database of Gorontalo’s local medicinal plant, by comprising waterfall method of software engineering approach. The waterfall method involves four steps. The first step is system requirement analysis through preliminary study and observation based on field study and library research. The second is system design, by context diagram and system architecture designs, i.e., use case diagram, class diagram, activity diagram, and database design. The third is coding using PHP programming language by OOP (object oriented programming) concept and MVC (model view controller) architecture. The last step is system test using the black-box testing method. The result shows that the web application designed is able to operate properly.

Penerapan Model View Controller (MVC) Dengan Framework Codeigniter Pada Sistem Informasi Booking Wisata Klangon

Special Klangon is the presence of a natural viewpoint of Mount Merapi from close range and become a favorite location for the biker mountain bike rider (mountain bike / MTB). The number of visitors who come to make managers overwhelmed to serve visitors because it still uses the management system manually by using stationery and books as a medium of recording transactions every day. The booking system there is still using sms and telfon to make mistakes when logging. The research that will be done is to convert management system in Klangon Tourism Village from manual system to computerized system. With the development of software development technology in the form of framework bebasis PHP is widely used that is Codeigniter (CI). The CI framework was developed to make it easier to develop applications. The structure of the CI Framework has implemented object-oriented programming concepts and the Models-Views-Controller (MVC) approach. This research uses CI in devel-oping this application with Waterfall method. Results Making Information System Booking Klangon Tour is an online booking process that provides information about any product that is in Klangon tourism and provide tour package information and price list of the package, Users can choose existing tour packages. Finally implementation can provide the functional benefits of online ticket management. Keywords—3-6 Tour, Klangon, booking, MVC, Codeigniter

Pengembangan Sistem Informasi Tanaman Obat Daerah Gorontalo Berbasis Web dan Mobile

The insufficiency of information to the society regarding the utilization and benefits of the Gorontalo area of medicinal plants led to a lack of utilization of medicinal plants in this area. Besides cheap, Gorontalo's medicinal plants can also overcome various kinds of diseases. Nevertheless, the data of medicinal plants had not been well managed and had not been documented and stored digitally. This research aims to develop information systems in web applications and mobile Gorontalo's medicinal plant's data. RUP (Rational Unified Process) using the concept of a Unified Modelling Language (UML) is used in the method of designing a system that consists of a Use case diagrams, Activity diagrams, and Class diagrams. Programming language using PHP with the concept of OOP (object oriented programming) as a backend for web applications and the IONIC framework as a frontend for mobile applications. The results indicate that the application can organize the data of medicinal plant and also display the data and search for medicinal plants based on specific disease.

Design and Implementation of a Teaching Tool for Introduction to object-oriented programming

Object-oriented programming (OOP) is a programming paradigm in which programs are organized as cooperative collections of object. Learning the object-oriented approach is however difficult for novice students, mostly because the concepts of object, class and inheritance are abstract in nature. The main objective of this article is to present the design and validation of a learning environment for learning the concepts of object-oriented programming. The learning environment is based on Polya's heuristic method for solving problems. The validation process was performed using a pretest and post-test applied to two groups: control and experimental. The results given in the validation demonstrate evidence that experimental group recorded a higher level of consolidation of the concepts of object-oriented programming.

Events and Sightings

Events and Sightings David Walden (bio) and Dag Spicer (bio) Fifty-Year Anniversaries in Norwegian Computing History Two fifty-year anniversaries in computing history were celebrated in Oslo in September 2017: the fifty-year anniversary of the creation of the Simula programming language, and the fifty-year anniversary of the founding of the Norsk Data computer company. Simula The Simula 67 programming language, first formally defined in 1967, was a step in a series of developments by Ole-Johan Dahl and Kristen Nygaard that began in the early 1960s.1 Dahl and Nygaard were given the 2001 IEEE John von Neumann Medal and the ACM 2001 A.M. Turing Award for their creation of Simula. A fifty-year anniversary celebration for Simula took place (in the “Simula Auditorium” in the “Ole-Johan Dahl Building”) at the University of Oslo on 27 September 2017. The celebration began with unveiling of a plaque from the IEEE History Committee’s Milestone program. The plaque reads: IEEE Milestone Object-oriented Programming, 1961–1967 Ole-Johan Dahl and Kristen Nygaard created the Simula programming languages in the 1960s at the Norwegian Computer Center, and in so doing introduced a new way of modeling and simulating complex tasks. Object-oriented programming is now dominant in systems development. It is an integral part of computer science curricula, as are languages built on object-oriented programming concepts, such as Smalltalk, C++, Java, and Python. September 2017 The nomination of this Milestone was from the IEEE Norway Section. The photo shows Section Vice-Chairman Kaveh Niayesh unveiling the plaque. The rest of the day consisted of presentations by several programming language researchers and developers: Oscar Nierstrasz (“Great Moments in the History of OOP”), Dave Thomas (“The Legacy of Simula 67”), and James Gosling (“Simula: A Personal Journey”), as well as a panel discussion chaired by Eric Jul (“Whither Programming Languages? Can We Still Celebrate Simula 50 Years from Now?”) with participation of the prior three speakers and Ole Lehrmann Madsen and Olaf Owe.2 Videos from the event are available.3 The previous afternoon, the Association of Simula Users (ASU) held a several-hour meeting at which there were six presentations and a wrap-up session. According to Boris Magnusson (ASU chairman 1982–83), the ASU has been in continuous existence since the early days of Simula 67, holding annual conferences and publishing a quarterly newsletter. However, in recent years the ASU activities “have slowly faded away, and the meeting in Oslo was intended as a last meeting and also a way to formally close down the Association.” Click for larger view View full resolution Photo 1. Photo credit: Harald Brombach/digi.no. Norsk Data On 16–17 September 2017, the fiftieth anniversary of the founding of Norsk Data was marked. In 1967 Lars Monrad-Krohn, Per Bjørge, and Rolf Skår left the Norwegian Defence Research Establishment (NDRE), where they had worked on the computer developments in “Siffergruppen” (the Digital Group), initiated and [End Page 93] led by Yngvar Lundh. They founded Norsk Data Elektronikk, where their first computer development was the Nord-1, building on work they had done in the Digital Group. Click for larger view View full resolution Photo 2. Veslemøy Østrem of Aftenposten interviewing Norsk Data founders Rolf Skår and Lars Monrad-Krohn. Photo credit: Ragnar Sturzel. The Nord-1was a minicomputer and competed well in Europe with minicomputers from the United States. With additional computers being developed over the years (arguably better hardware and software than some US competitors) and many high-profile or operation-critical installations, Norsk Data eventually became a high-flying company listed on the London as well as the NASDAQ stock exchanges, in addition to on the Norwegian exchange. With the personal computer revolution, Norsk Data went the way of almost all minicomputer manufacturers, eventually going out of business. For many of the eventual 4,500 employees of Norsk Data, their time with a company was one of the most exciting times of their professional careers, and the one-time employees of Norsk Data went on to populate a significant part of the developing Norwegian computing industry. The day of 18 September involved a five-hour...

Design and implementation of communication patterns using parallel objects

Within an environment of parallel objects, an approach of structured parallel programming with the paradigm of object-orientation is presented here. The proposal includes a programming method based on high level parallel compositions or HLPCs (CPANs in Spanish). C++ classes and CPANs are syntactically alike and differ in concurrency mechanisms. Different parallel programming patterns, synchronisation operations and new constructs like futures have been discussed throughout the paper. To achieve software-reusability, a series of predefined patterns that use object-oriented programming concepts have been presented. Concurrency related constraints on process synchronisation are set by only resorting to maxpar, mutex, sync primitives in the application code. By means of the method application, the implementation of commonly used parallel communication patterns is explained to finally present a library of classes for C++ applications that use POSIX threads.

Teaching C++ Using Real Life Analogies

Over the years Object oriented programming (OOP) has gained the dominance in both the software industryand education. There are a number of OOP versions released by Software companies and the same are adopted by the educational institutions at various levels in their curricula. The main reason for this inclination is driven by the fact that OOP solves any problem by imitating the mental model of humans. It is usually a challenge for teachers to imbibe OOP concepts in novice programmers. Teaching fundamentals of OOP at an introductory level is challenging. This paper presents a pedagogical approach used for teaching/learning process of Object Oriented Programming in C++ course offered at MCA II semester. The approach uses real life analogies to effectively enhance the learning of OOP concepts among students. Students might program in an OOP language but fail to program in an object-oriented style. This is because students are unsuccessful to model given problem in terms of objects. To ease this, single real life example is used to help students acquire these OOP concepts. The use of a single example from start to finish facilitated deepening of teaching. It mainly helped to join with ease the new concepts and mechanisms, such as class combination, inheritance and polymorphism. Eventually the example expanded into a kind of system. The proposed methodology comprised of five stages in which students are introduced to classes and objects, constructors and destructors, abstraction and encapsulation, inheritance and polymorphism concepts. This approach demonstrated effectiveness in motivating students to incorporate OOP concepts for developing simple real world applications. It has also improved the quality of teaching C++ programming course. An evaluation of the problems experienced in teaching OOP is presented and some possible approaches for improving the quality and success of such courses are discussed.

MEASURING EFFECT OF CULTURALLY RESPONSIVE LEARNING ENVIRONMENT FOR COMPUTING EDUCATION IN AFRICAN CONTEXT

A relevant research area in computing education is to explore aspects that motivate and promote learning in culturally responsive learning environments. This research contributes towards understanding how indigenous knowledge can be used to create a meaningful learning environment for learning object-oriented programming. The aim of research is to explore the effect of a culturally responsive learning environment for computing education in Ghana high school context. This research comprised teaching interventions that emphasized cultural significance and stimulation of Oware game as metaphors and related analogies to teach object oriented programming. The results indicated that a culturally responsive environment had a positive effect on high school students’ conceptual understanding of object-oriented programming concepts and attitudinal change to computing education. Key words: computer attitude, computer achievement, object-oriented concepts, Oware game, indigenous knowledge, integrationist approach.

Implementation of object-oriented programming in study of electrical race car

The paper covers issue of conducting advanced research of electrical race car participating in international competition called Sileverline Corporate Challenge. Process of designing race cars in Silesian Greenpower team is aided by a professional engine test stand built particularly in purpose of this research. Phase of testing and simulation is an important part of the implementation of new technologies. Properly developed solutions and test procedures are able to significantly shorten development time and reduce design costs. Testing process must be controlled by a modular and flexible application, easy to modify and ensuring safety. This paper describes the concept of object-oriented programming in LabVIEW and exemplary architecture of object-oriented control application designed to control engine test stand of the electrical race car. Eventually, the task of application will be to steer the electromagnetic brake and the engine load torque to perform according to data from the actual race track. During the designing process of the car, minimizing energy losses and maximizing powertrain efficiency are the main aspects taken into consideration. One of the crucial issues to accomplish these goals is to maintain optimal performance of the motor by applying effective cooling. The paper covers the research verifying the effectiveness of the cooling system.

The Role of Object-Oriented Programming (OOP) in Modeling of Geographic Information Systems (GIS)

The popularity of Geographic Information System (GIS) has grown tremendously such that software developers can no longer neglect that sector when fashioning out new technologies for software development. The concept of Object-Oriented Programming (OOP) has revolutionalised software development industry including the GIS and software modeling in general. This paper reveals how the concepts inherent in Object- Oriented Programming Languages (OOPLs) can be deployed to model a GIS software. Using materials from secondary sources and adopting a case study method, the paper unraveled the desirable features of GIS software with a view to determining the relevance of OOP in GIS modeling. Furthermore, current GIS Modeling software features were critically studied and were found to imbibe several OOP techniques and concepts. A GIS software, ArcGIS was used as a case study to reveal that GIS software models have close affinity with OOP implementation languages like C++, Java, C#. The paper concluded that OOP concepts indeed were very relevant in GIS modeling, even though some GIS related problems still needed to be fully tackled by existing software.

The Impact of Different Teaching Approaches and Languages on Student Learning of Introductory Programming Concepts

Learning to program, especially in the object-oriented paradigm, is a difficult undertaking for many students. As a result, computing educators have tried a variety of instructional methods to assist beginning programmers. These include developing approaches geared specifically toward novices and experimenting with different introductory programming languages. However, determining the effectiveness of these interventions poses a problem. The research presented here developed an instrument to assess student learning of fundamental and object-oriented programming concepts, then used that instrument to investigate the impact of different teaching approaches and languages on university students’ ability to learn those concepts. Extensive data analysis showed that the instrument performed well overall. Reliability of the assessment tool was statistically satisfactory and content validity was supported by intrinsic characteristics, question response analysis, and expert review. Preliminary support for construct validity was provided through exploratory factor analysis. Three components that at least partly represented the construct “understanding of fundamental programming concepts” were identified: methods and functions, mathematical and logical expressions, and control structures. Analysis revealed significant differences in student performance based on instructional language and approach. The analyses showed differences on the overall score and questions involving assignment, mathematical and logical expressions, and code completion. Instructional language and approach did not appear to affect student performance on questions addressing object-oriented concepts.

MCViNE – An object oriented Monte Carlo neutron ray tracing simulation package

MCViNE (Monte-Carlo VIrtual Neutron Experiment) is an open-source Monte Carlo (MC) neutron ray-tracing software for performing computer modeling and simulations that mirror real neutron scattering experiments. We exploited the close similarity between how instrument components are designed and operated and how such components can be modeled in software. For example we used object oriented programming concepts for representing neutron scatterers and detector systems, and recursive algorithms for implementing multiple scattering. Combining these features together in MCViNE allows one to handle sophisticated neutron scattering problems in modern instruments, including, for example, neutron detection by complex detector systems, and single and multiple scattering events in a variety of samples and sample environments. In addition, MCViNE can use simulation components from linear-chain-based MC ray tracing packages which facilitates porting instrument models from those codes. Furthermore it allows for components written solely in Python, which expedites prototyping of new components. These developments have enabled detailed simulations of neutron scattering experiments, with non-trivial samples, for time-of-flight inelastic instruments at the Spallation Neutron Source. Examples of such simulations for powder and single-crystal samples with various scattering kernels, including kernels for phonon and magnon scattering, are presented. With simulations that closely reproduce experimental results, scattering mechanisms can be turned on and off to determine how they contribute to the measured scattering intensities, improving our understanding of the underlying physics.

Why Scala matters

Scale is a blend of object-oriented and functional programming concepts in a statically typed language. The combination of both styles in Scala makes it possible to extend into a new domain-specifi...

Object-Oriented Design and Programming

The Object-Oriented Programming (OOP) technique is nowadays the most popular programming technique among tertiary education institutions. However, learning OOP is a cognitively demanding task for undergraduate students. Several difficulties and misconceptions have been recorded in the literature for both OOP concepts and languages, mainly Java. This article focuses on reviewing and advancing research on the most fundamental OOP concepts, namely, the concepts of “object” and “class” and their role during program execution. The results of a long-term investigation on the subject are presented, focusing on a study exploring undergraduate students’ conceptions on “objects” and “classes.” The study advances related research on categories of conceptions on “objects” and “classes” by providing quantitative results, in addition to qualitative results, regarding the frequency of the recorded conceptions. Nearly half the students seem to comprehend the modeling and static/dynamic aspects of the concepts “object” and “class.” Implications for achieving a deep conceptual understanding of text, action, and modeling aspects of these fundamental concepts are also discussed. Information regarding the programming environments utilized in the course and key features of the applied teaching approach are presented, in order to facilitate both a better understanding of the context and a better employment of the results of the presented study. Finally, proposals for enhancing the contribution of this and similar studies are made.

Designing and Teaching of Language Independent Object Oriented Programming Course

Programming Languages play a crucial role in developing any software applications. Academicians and IT professionals give more priority for mastering many programming languages. Learning many language syntax and constructs will not contribute much in building problem solving skills. For any given task, students should be capable of solving it by using any of the programming languages. More importantly, students should build an art of optimizing the performance of the application by applying fundamental and advanced concepts of programming languages. In this paper, we propose an innovative way of designing and teaching of Object Oriented Programming Concepts without sticking to one particular language. In our first attempt, we practiced teaching of this course with two languages namely, C++ and Java. Our experimental results and students feedback prove the effectiveness of designing and teaching of Language independent Object Oriented Programming course. Moreover, it develops the skills of implementing and applying object oriented concepts using any object programming language.

Nonsingular boundary element flexural analysis of stiffened plates

This paper concerns a nonsingular formulation to deal with thin plates reinforced by beams using a BEM-FEM combination. The nonsingular formulation developed for the Kirchhoff׳s plate bending problem is extended to include the effect of the stiffener beams. In the proposed model, the plate is modelled by BEM using quadratic elements with transverse deflection and rotations in two orthogonal directions as the degrees of freedom (w, w,x and w,y). The beam is modelled by FEM using Timoshenko beam theory with quadratic elements and taking into account the transverse shear and bending and twisting moments (three degrees of freedom per node). As the plate and beam are modelled using C0 quadratic interpolation with the same set of three nodal values, these can be easily coupled. The nonsingular BEM formulation for thin plate bending problems is presented and the coupling of the BE equations of the plate and the FE equations of the beam is done by using the compatibility and equilibrium equations. A computer program has been developed using C++ with object oriented programming concepts. Several numerical examples are presented to illustrate the accuracy and efficiency of the present formulation.