Search results for " control system"
showing 10 items of 262 documents
Towards a typology of Management control systems in the post-Soviet context
2019
International audience
Evolutionary approach to coverage testing of IEC 61499 function block applications
2015
The paper addresses the problem of coverage testing of industrial automation software represented in the IEC 61499 standard, one of the recent standards for distributed control system design. Contrary to model-based testing (MBT), the paper focuses on implementation coverage, not model coverage. An approach based on evolutionary algorithms is presented which generates coverage test suites for both basic and composite IEC 61499 function blocks. It employs two third-party tools, FBDK and EvoSuite. The evaluation of the approach was performed on a set of control applications for two lab-scale demonstration plants. Results show that the approach is applicable and shows good performance at least…
Il reporting per segmenti nei settori del trasporto pubblico locale e della cura della salute. Esperienze a confronto.
2020
This paper examines issues of cost and revenue allocation that arise when segment reporting is carried out in local public transportation and healthcare companies. It also presents reports by segment schemes that can be used by companies operating in the aforementioned sectors. The research was carried out with the qualitative methods of participant observation and document analysis. this study focuses on the-oretical principles that have been derived from experiences carried out in the design and implementation of a segment reporting system in two companies operating in the public transportation and healthcare sectors. The analysis of the issues and solu-tions adopted by the companies obse…
Outsourcing information systems: A strategic partnership with risks
1993
Abstract As information processing and telecommunications technology increase in sophistication and complexity, organizations are finding it more difficult to manage their information systems (IS) for business success. Growing numbers are now sharing these responsibilities and risks with outsourcing vendors. American Standard, Eastman Kodak, General Dynamics, Metropolitan Life, and Young & Rubicam are prominent companies which have outsourced some or all of their IS activities. They are looking to gain competitive advantages by cutting costs and focusing internal resources on core activities. However, compromises in management control and data security, the potential of hidden costs, and th…
INNOVATIVE MASS-DAMPING-BASED APPROACHES FOR SEISMIC DESIGN OF TALL BUILDINGS
2021
Mass damping is a well known principle for the reduction of structural vibrations and applied in tall building design in a variety of configurations. With mass usually small (around 1% of building mass), the properly “tuned” mass damper (TMD) shows great effectiveness in reduc-ing wind vibrations, but minor advantages under earthquake excitations. The above limitation can be surpassed by utilizing relatively large mass TMD. For this pur-pose, two different solutions are here proposed. In both cases, the idea is to separate the building into two or more parts, thus allowing for a relative motion between them, and acti-vating the mass damping mechanism. In the first solution, the building is …
Cost consciousness: conceptual development from a management accounting perspective
2015
Purpose – This paper aims to take note of the need to better understand cost consciousness from a management accounting perspective and serves as an exploratory study striving to analyze how the notion has been addressed by management accounting scholars. Design/methodology/approach – This paper presents the findings of a thorough literature review identifying the drivers, interpretations, definitions and results which management accounting scholars have associated with cost consciousness. Findings – This paper has synthesized the definitions and interpretations by considering their conceptual broadness and the subjects that cost consciousness characterizes. In addition, various potential …
Design of the Biotechnological System for the Cultivation of a Polysaccharide-Producing Microorganism and Metabolites Separation
1970
This paper presents a design of the biotechnological system established for the cultivation of a polysaccharide-producing microorganism and the separation of the polysaccharide together with other metabolites. The strain used is a halophilic archaeon called Haloferax mediterranei (Mironescu et al., 2003). On designing the biotechnological system, some requirements are important: The recipients and the pipes must be resistant to the corrosion action of the cultivation substrate very rich in NaCl (125 to 150 g/l); A command and control system for pH, temperature and substrate and inoculum feeding is necessary; A system for monitoring dissolved oxygen and gases evacuated from the bioreactor (O…
Controllo di gestione nelle PMI e consulenti esterni
2019
L'articolo considera, a partire da un'indagine di campo su un campione di professionisti, il loro ruolo, in particolare quello degli esperti contabili e dei dottori commercialisti, nella diffusione degli strumenti e delle metodiche del controllo di gestione nell'ambito delle PMI. Management control in SMEs and external consultants. The issue of management control in small and medium-sized enterprises has long been the subject of scientific debate, as well as a key point of professionals’ interest. Starting from the recognition of the role played by the latter, this paper aims to investigate the type and level of dissemination of management control tools in SMEs by adopting the perspective o…
Robust delay-dependent H∞ control of uncertain time-delay systems with mixed neutral, discrete, and distributed time-delays and Markovian switching p…
2011
Author's version of an article published in the journal: IEEE Transactions on Circuits and Systems I: Regular Papers. Also available from the publisher at: http://dx.doi.org/10.1109/tcsi.2011.2106090 The problem of robust mode-dependent delayed state feedback H ∞ control is investigated for a class of uncertain time-delay systems with Markovian switching parameters and mixed discrete, neutral, and distributed delays. Based on the LyapunovKrasovskii functional theory, new required sufficient conditions are established in terms of delay-dependent linear matrix inequalities for the stochastic stability and stabilization of the considered system using some free matrices. The desired control is …
L'articulation des usages diagnostique et interactif d'un seul et même système de contrôle de gestion : le cas d'un système d'indicateurs environneme…
2013
With the conceptual framework of control levers of Simons (1995), this article shows how to coordinate diagnostic and interactive uses of the same "management control system" (in this case a system of environmental indicators) for the deployment and the emergence of new strategies. In contrast to the literature, we propose an articulation "in parallel" of levers of control as alternative to sliding levers of control. These results are obtained from a case study in a French wine and spirits subject to large strategic environmental uncertainties.