Software Sustainability: The Modern Tower of Babel

<p>The aim of this paper is to explore the emerging definitions of software sustainability from the field of software engineering in order to contribute to the question, what is software sustainability?</p

Designing Software Architectures As a Composition of Specializations of Knowledge Domains

This paper summarizes our experimental research and software development activities in designing robust, adaptable and reusable software architectures. Several years ago, based on our previous experiences in object-oriented software development, we made the following assumption: ‘A software architecture should be a composition of specializations of knowledge domains’. To verify this assumption we carried out three pilot projects. In addition to the application of some popular domain analysis techniques such as use cases, we identified the invariant compositional structures of the software architectures and the related knowledge domains. Knowledge domains define the boundaries of the adaptability and reusability capabilities of software systems. Next, knowledge domains were mapped to object-oriented concepts. We experienced that some aspects of knowledge could not be directly modeled in terms of object-oriented concepts. In this paper we describe our approach, the pilot projects, the experienced problems and the adopted solutions for realizing the software architectures. We conclude the paper with the lessons that we learned from this experience

Open source environment to define constraints in route planning for GIS-T

Route planning for transportation systems is strongly related to shortest path algorithms, an optimization problem extensively studied in the literature. To find the shortest path in a network one usually assigns weights to each branch to represent the difficulty of taking such branch. The weights construct a linear preference function ordering the variety of alternatives from the most to the least attractive.Postprint (published version

Управління міжнародним бізнесом: Agility Journey для високотехнологічних компаній

The purpose of the article is the development of recommendations for the business maturity determination and measurement in the implementation of the agile approach for high-tech companies. Methods of analysis of documents, observation, personal and in-depth interviews, case studies have been used in the research. The findings of the research: Business Agility Journey has been suggested for defining the state of the maturity of the company and conducting express diagnostics of agility. Agile Project Management Journey has been developed for the identification of weaknesses by the companies in the path to agility, as well as for the determination of events for the transition from the traditional to the agile approach. Personal Agility Checklist has been designed for testing the soft skills of employees for the presence of the agile mindset. Research limitations include the study of the maturity of companies in the IT industry. Practical implications are based on the use of suggested Agility Journeys in defining the state of maturity and main problems on the transition path. Also, Personal Agility Checklist will help to check the agility of the future employees. The originality of the article is based on the uniqueness of the Agility Journey that has been developed for the first time. Further research on this topic should be focused on the development of an agile mindset as a prerequisite for the provision of agility in the company.Метою статті є розробка рекомендацій щодо визначення та вимірювання зрілості бізнесу при впровадженні еджайл-підходу для високотехнологічних компаній. У дослідженні використовуються методи аналізу документів, спостереження, особистого та глибинного інтерв’ю та кейс-стаді. Розроблено Business Agility Journey для визначення стану зрілості компанії та проведення експрес-діагностики еджайльності. Agile Project Management Journey було розроблено для визначення компаніями своїх слабких сторін, а також заходів для переходу від традиційного до еджайльного підходу. Personal Agility Checklist був створений для перевірки «гнучких навичок» (soft skills) співробітників на наявність гнучкого мислення (agile mindset). Обмеження досліджень включають вивчення зрілості компаній ІТ-галузі. Практична значущість ґрунтується на використанні запропонованих Agility Journeys для визначення стану зрілості та основних проблем на шляху переходу. Також Personal Agility Checklist допоможе перевірити еджайльність майбутніх працівників. Оригінальність статті базується на унікальності Agility Journey, яка була розроблена вперше. Подальші дослідження на цю тему доцільно зосередити на розвитку гнучкого мислення як передумови забезпечення еджайльності в компанії

Actor perception in business use case modeling

Mainstream literature recognizes the validity and effectiveness of use cases as a technique for gathering and capturing system requirements. Use cases represent the driver of various modern development methods, mainly of object-oriented extraction, such as the Unified Process. Although the adoption of use cases proliferated in the context of software systems development, they are not as extensively employed in business modeling . The concept of business use case is not a novelty, but only recently did it begin to re-circulate in the literature and in case tools. This paper examines the issues involved in adopting business use cases for capturing the functionality of an organization and proposes guidelines for their identification, packaging, and mapping to system use cases. The proposed guidelines are based on the principle of actor perception described in the paper. The application of this principle is exemplified with a worked example aimed at demonstrating the utility of the proposed guidelines and at clarifying the application of the principle of actor perception. The worked example is based on a series of workshops run at a major UK financial institution

The ModelCC Model-Driven Parser Generator

Syntax-directed translation tools require the specification of a language by means of a formal grammar. This grammar must conform to the specific requirements of the parser generator to be used. This grammar is then annotated with semantic actions for the resulting system to perform its desired function. In this paper, we introduce ModelCC, a model-based parser generator that decouples language specification from language processing, avoiding some of the problems caused by grammar-driven parser generators. ModelCC receives a conceptual model as input, along with constraints that annotate it. It is then able to create a parser for the desired textual syntax and the generated parser fully automates the instantiation of the language conceptual model. ModelCC also includes a reference resolution mechanism so that ModelCC is able to instantiate abstract syntax graphs, rather than mere abstract syntax trees.Comment: In Proceedings PROLE 2014, arXiv:1501.0169

A Model-Driven Approach for Business Process Management

The Business Process Management is a common mechanism recommended by a high number of standards for the management of companies and organizations. In software companies this practice is every day more accepted and companies have to assume it, if they want to be competitive. However, the effective definition of these processes and mainly their maintenance and execution are not always easy tasks. This paper presents an approach based on the Model-Driven paradigm for Business Process Management in software companies. This solution offers a suitable mechanism that was implemented successfully in different companies with a tool case named NDTQ-Framework.Ministerio de Educación y Ciencia TIN2010-20057-C03-02Junta de Andalucía TIC-578

Naming the Pain in Requirements Engineering: A Design for a Global Family of Surveys and First Results from Germany

For many years, we have observed industry struggling in defining a high quality requirements engineering (RE) and researchers trying to understand industrial expectations and problems. Although we are investigating the discipline with a plethora of empirical studies, they still do not allow for empirical generalisations. To lay an empirical and externally valid foundation about the state of the practice in RE, we aim at a series of open and reproducible surveys that allow us to steer future research in a problem-driven manner. We designed a globally distributed family of surveys in joint collaborations with different researchers and completed the first run in Germany. The instrument is based on a theory in the form of a set of hypotheses inferred from our experiences and available studies. We test each hypothesis in our theory and identify further candidates to extend the theory by correlation and Grounded Theory analysis. In this article, we report on the design of the family of surveys, its underlying theory, and the full results obtained from Germany with participants from 58 companies. The results reveal, for example, a tendency to improve RE via internally defined qualitative methods rather than relying on normative approaches like CMMI. We also discovered various RE problems that are statistically significant in practice. For instance, we could corroborate communication flaws or moving targets as problems in practice. Our results are not yet fully representative but already give first insights into current practices and problems in RE, and they allow us to draw lessons learnt for future replications. Our results obtained from this first run in Germany make us confident that the survey design and instrument are well-suited to be replicated and, thereby, to create a generalisable empirical basis of RE in practice

Dealing with Fuzzy Information in Software Design Methods

Software design methods incorporate a large set of heuristic rules that should result in stable software architecture of high quality. In general, clearly defined inputs are required to deliver the desired results. Unfortunately, especially in the early phases of software development, it is very difficult or even impossible to provide precisely defined information. Since methods cannot deal with imprecision, the designers need to make approximations which are generally not justifiable. In this paper, we will advocate an approach where the inputs for software design methods are modeled by using fuzzy sets. This approach renders the need for introduction of extra information for removal of inexactness obsolete