SYSTEM ANALYSIS OF NORMATIVE REQUIREMENTS EVOLUTION IN TERMS OF COMPOSITION AND CHARACTERISTICS OF SEWAGE DISCHARGED INTO SURFACE WATER BODIES

Information on the main normative documents on wastewater discharge into surface water bodies adopted in Russia, Europe and the USA is given. The information on normalization of composition and properties of waste water discharged into surface water bodies is summarized. The system of sewage discharge rationing, operating in Russia from 1947 to 2019, formed the establishment of maximum permissible concentrations for the majority of pollutants at the level of technically unatt ainable concentrations. Implementation of normative documents of ITG (information technology guide) 10- 2019 and «Rules for att ributing water bodies to categories of water bodies to establish technological indicators of BAT (Best Available Technology)...». (2019) is the next stage of practical actions to radically change the normalization of wastewater discharge into water bodies in Russia.

Aplicação da Abordagem Ágil REACT para a Melhoria do Processo de Desenvolvimento de Requisitos: O Caso da W3AS

O relacionamento entre a Engenharia de Requisitos (ER) e os métodos ágeis tem atraído bastante atenção dos pesquisadores nos últimos anos (Daneva et al., 2015), em face dos métodos ágeis terem surgido como uma ótima opção para minimizar alguns problemas enfrentados pelas abordagens tradicionais, tais como: pouco envolvimento dos clientes, alta mudança nos requisitos, requisitos mal especificados, dentre outros. Neste cenário, Santos et al. (2018) propuseram um método ágil específico para a área da ER denominado REACT (Requirements Evolution in Agile ContexT), um método que foi concebido a partir de outros métodos ágeis. Assim, esta apresentação ter por objetivo descrever o relato de um estudo de caso sobre a aplicação do REACT, uma abordagem ágil para o desenvolvimento de requisitos de software, em um ambiente real de desenvolvimento de software, a fábrica de software da W3AS. Este estudo de caso avaliou as forças, as fraquezas, as oportunidades e as ameaças relacionadas aos ativos que compõem o REACT, a saber: artefatos, ciclo de vida, papéis e cerimônias. Dentre os resultados, observou-se que o REACT foi efetivo, simples de usar, fortemente colaborativo, suitable, centrado no usuário e orientado a metas. Assim, atendendo ao seu principal objetivo que é evoluir os requisitos de um produto de software de forma iterativa, eficiente e sob o guarda-chuva do mindset ágil.

Sentiment Analysis Based Requirement Evolution Prediction

To facilitate product developers capturing the varying requirements from users to support their feature evolution process, requirements evolution prediction from massive review texts is in fact of great importance. The proposed framework combines a supervised deep learning neural network with an unsupervised hierarchical topic model to analyze user reviews automatically for product feature requirements evolution prediction. The approach is to discover hierarchical product feature requirements from the hierarchical topic model and to identify their sentiment by the Long Short-term Memory (LSTM) with word embedding, which not only models hierarchical product requirement features from general to specific, but also identifies sentiment orientation to better correspond to the different hierarchies of product features. The evaluation and experimental results show that the proposed approach is effective and feasible.

An Effective Security Requirements Engineering Framework for Cyber-Physical Systems

Context and motivation: Cyber-Physical Systems (CPSs) are gaining priority over other systems. The heterogeneity of these systems increases the importance of security. Both the developer and the requirement analyst must consider details of not only the software, but also the hardware perspective, including sensor and network security. Several models for secure software engineering processes have been proposed, but they are limited to software; therefore, to support the processes of security requirements, we need a security requirements framework for CPSs. Question/Problem: Do existing security requirements frameworks fulfil the needs of CPS security requirements? The answer is no; existing security requirements frameworks fail to accommodate security concerns outside of software boundaries. Little or even no attention has been given to sensor, hardware, network, and third party elements during security requirements engineering in different existing frameworks. Principal Ideas/results: We have proposed, applied, and assessed an incremental security requirements evolution approach, which configures the heterogeneous nature of components and their threats in order to generate a secure system. Contribution: The most significant contribution of this paper is to propose a security requirements engineering framework for CPSs that overcomes the issue of security requirements elicitation for heterogeneous CPS components. The proposed framework supports the elicitation of security requirements while considering sensor, receiver protocol, network channel issues, along with software aspects. Furthermore, the proposed CPS framework has been evaluated through a case study, and the results are shown in this paper. The results would provide great support in this research direction.