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Requirement Elicitation Techniques for Software Projects in Ukrainian IT: An Exploratory Study

Gobov Denys, Huchenko Inna

Annals of Computer Science and Information Systems

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2020

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Vol. 21

673--681

EN

Elicitation is a core business analysis/requirements engineering activity that provides inputs for others like analysis, specification, confirmation, management. There is a significant number of specialized techniques that are used for requirement elicitation. The selection of the appropriate techniques considerably influences a project plan and success of a change as a whole. This paper is intended to analyze the industrial standards and experience of business analysts and requirement engineers in the part of elicitation activities. We conducted a survey study involving 328 specialists from Ukrainian IT companies and a series of interviews with experts to interpret the survey results. Furthermore, this paper provides the guideline in selecting a particular elicitation technique with respect to the type of project and situation.

2

Change demands renaissance in civil engineering education

Arciszewski T., Russell J.

Structure and Environment

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2011

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Vol. 3, no. 4

5-13

EN

Much has been written about how the world has changed and continues to change at an incredibly rapid pace. Much has also been written about globalization, population demands, water quality, waste management, and maw more oldie issues that confront human kind throughout the world. It is not the authors' purpose in this paper to repeal the familiar maxim: civil engineering education must change to meet the challenges of a rapidly changing world. Instead, the authors clarify the very real risks of the vectors ofpsychological inertia, and describe how systems analysis and the theory of inventive problem solving (TRIZ) justify substantive change in civil engineering education and how that could be accomplished.

3

Typowe elementy i modele systemów paliwowo-energetycznych

Suwała W.

Zeszyty Naukowe Instytutu Gospodarki Surowcami Mineralnymi i Energią PAN

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2009

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nr 76

5-16

PL

Podstawowym narzędziem analizy systemowej są modele, a ich konstrukcja jest uwarunkowana szeregiem czynników - w tym subiektywnych. Nie można zatem przedstawić jednego modelu określonego systemu, zawsze będzie on budowany pod kątem znalezienia rozwiązania pewnego problemu. Niemniej jednak w modelach systemów paliwowo-energetycznych można wyróżnić pewne typowe elementy i ich relacje, które znajdą się niemal w każdym modelu. Artykuł poświęcono jednemu z możliwych ujęć elementów i równań modelu będącemu do pewnego stopnia ujęciem typowym.

EN

Models are the basic tools of the systems analysis, but their construction is warranted by many factors some of subjective character. The is no one model of a certain system, it is always constructed for a specific purpose - task of the system research. However, in the fuels and energy systems it is possible to diversify certain typical elements and their relations, which could be found nearly in each model. The paper is devoted to presentation of one of feasible sets of elements and model's equations which is to some extent typical for fuels and energy systems.

4

Systemic analysis of models of dynamic systems of shaft machining in elastic-deformable condition

Taranenko G., Taranenko V., Szabelski J., Świć A.

Applied Computer Science

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2007

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Vol. 3, no 2

115--138

EN

The paper presents methodology of developing models of dynamic systems of machining shafts in the elastic-deformable condition. The specifics of dynamic system (DS) identification concerning straight turning and straight and plunge grinding of low-rigidity shafts is presented. The specifics of the process of lowrigidity elements machining is taken into account through the introduction of suitable equations of constraint reflecting additional elastic strain in one of the equations describing the control force effect. Systemic analysis of the developed models is performed, and their hierarchical structure is given.

5

Kryteria prawdy i użyteczności informacji w modelach zarządzania w warunkach niepewności i ryzyka

Gil Z.

Zagadnienia Techniczno-Ekonomiczne

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2005

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T. 50, z. 1

29-39

PL

W artykule przedstawiono model podejmowania decyzji w firmie w warunkach niestabilnych, zagrażających jej funkcjonowaniu. Decydent zmuszony jest wówczas do podejmowania szybkich decyzji w oparciu o informację nie zawsze w pełni wiarygodną i kompletną. Pojawia się wówczas konflikt pomiędzy skutecznym zarządzaniem w warunkach ryzyka a awersją do podejmowania działań wyzwalających ryzyko wtórne w grupie decydenckiej. Artykuł przedstawia propozycje złagodzenia tego konfliktu.

EN

In this paper there is presented the model of making decisions in the company where its condisions is unstable. Then the decidend is forced to make quick decisions based on information not always reliable and complete. There is a conflict between effective managment in the case of a risk and an aversion to some action within a group of decidends which causes a risk. This paper presents some suggestions how to mitigate the conflict.

6

Structural modeling and systems analysis of uneasy factors for realizing safe, secure and reliable society

Tamura H., Akazawa K.

Journal of Telecommunications and Information Technology

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2005

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nr 3

64-72

EN

In this paper we try to extract various uneasy factors in our life. Then, we try to construct structural models among these factors using Decision Making Trial and Evaluation Laboratory (DEMATEL). For the purpose of analyzing priority among these factors we revised the DEMATEL and found effective factors to be resolved in order to realize future safe, secure and reliable (SSR) society.

7

Multi-loop linear control systems design

Goncharov V., Barkovsky A., Blinova N., Datsko O.

Systems Science

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2003

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Vol. 29, nr 3

5-15

EN

A numerical synthesis method of continuous control systems having few internal loops is proposed. Every loop may contain the correcting devices, both in the direct channel and in the feedback circuit, The basis of the method is a real integral transform allowing writing the synthesis equation in the image domain in such a way that it contains the functions of real argument only. The interpolation approach provides the development of synthesis equations for the unknown coefficients of correcting device transfer functions. The system solution by Newton's method is found.

8

Reliability of distributed networks

Kozlowska J.

Systems Science

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2001

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Vol. 27, nr 2

119-126

EN

Reliability of the communication network is one of its most important characteristics. When designing maximally reliable networks, subject to fixed cost constraints, the objective is to maximize the value of a chosen reliability criterion. Recently, the number of alternative routes in the networks is assumed to be the measure of reliability. In this paper, two methods for constructing highly reliable non-hierarchical communication networks are described. In the first method, we assume that all the links have the same cost of construction. For the different costs of construction of the links we propose the heuristic design method of non-hierarchical network, which has the required number of alternative routes, and which has the minimum cost. This heuristic method uses simple matrix calculation, which is suitable for a super-computer. The minimization of the large network cost under the constraints of the number of independent routes, can be done fast. In this paper, there is shown the error of heuristic method for different constraints of the reliability and different topologies of networks.

9

On M/D/1 queue with deterministic server vacations

Madan K.C., Saleh M.F.

Systems Science

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2001

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Vol. 27, nr 2

107-118

EN

We study a single server vacation queue with Poisson arrivals, deterministic service of constant duration b (> 0) and deterministic vacations of constant duration d (> 0) and designate this model as M/D/D/1. After completion of each service, the server may take a vacation with probability p or may continue working in the system with probability 1 - p. We obtain time-dependent as well as steady state probability generation functions for the number in the system. For the steady state we obtain explicitly the mean number and the mean waiting time for the system and for the queue. All known results of the M/D/1 queue are derived as a special case. Finally, a numerical illustration is discussed.

10

On conflict-free executions of elementary nets

Ochmański E.

Systems Science

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2001

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Vol. 27, nr 2

89-105

EN

The paper deals with analysis of elementary Petri nets with respect to possibilities of avoiding conflicts during their executions. There are two main aims of the paper. The first is to find a method of checking if a net is conflict-avoidable (i.e., if it possesses a conflict-free fair run). The second is to find a method of rebuilding any net to a totally conflict-avoidable net (i.e., a net possessing a conflict-free fair run in every one process) with the same behaviour. The main results are the following: 1. The proof of decidability, for elementary nets, of the problem of existence of a conflict-avoidable fair process (and an algorithm producing all fair runs). 2. Construction, for an arbitrary given elementary net, of a totally conflict-avoidable net with the same behaviour. The net, completed this way, has the same behaviour as the original one. Moreover, it is totally conflict-avoidable, and its execution may be supervised (in order to ensure conflict-freeness) by the reduced case graph built by the algorithm of the former section.

11

MGST (mathematical general systems theory) + extProlog = another operational UML for problem solving EUD

Takahara Y., Liu Y.

Systems Science

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2001

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Vol. 27, nr 1

5-23

EN

We are working for research on problem solving end user development. A problem solving EUD requires an EU (end user) to develop a System to solve his decision problem. In order to build a system, an EU should have a modeling language to describe the system, and at the same time a fourth generation language should be provided for him to implement the model on computers. This paper proposes a general system development methodology (GSDM) for problem solving EUD, and asserts that the GSDM is quite an effective methodology for it. GSDM adopts MGST (mathematical general systems theory) as a desirable modeling tool and extProlog (an extended Prolog which our group is developing) as its implementation language. It consists of six stages, block diagram description, input-output specification in the set theory, goal seeking specification in the set theory, automaton formulation, frame representation of state and implementation in extProlog. Since MGST uses set theory, it can describe a system in a more formal and precise way. Furthermore, a model described in MGST can have an easy implementation on computer by using extProlog.

12

A hybrid-neural network and population learning algorithm approach to solving reliability optimization problem

Czarnowski I., Jedrzejowicz P., Ratajczak E.

Systems Science

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2001

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Vol. 27, nr 2

73-87

EN

The paper proposes a hybrid approach integrating dedicated artificial neural network (ANN) and population learning algorithm (PLA) applied to maximising system reliability under cost and technical feasibility constraints. The paper includes a formulation of the system reliability optimisation (SRO) problem and a description of the dedicated neural network trained by applying the population learning algorithm. A solution to the example SRO problem is shown and results of the computational experiment are presented and discussed.