Search results for "Lua"

Aspetti valutativi nella costruzione del sistema informativo per la gestione ambientale dell'azienda

2013

This paper deals with the construction of an environmental management oriented corporate information system. A company point of view is adopted and a managerial approach is integrated with an evaluative approach. The work provides a critical reflection on the nature of corporate environmental responsibility and on the contribution of evaluation discipline for environment oriented improving of the traditional economic and financial corporate information system. Corporate management recognizes the principle that governs the activity of a company in the creation of economic value. In production processes, the neg-entropic aspects − relating to produced goods and other tangible and intangible b…

Architecture Enabling Adaptation of Data Integration Processes for a Research Information System

2018

Abstract Today, many efforts have been made to implement information systems for supporting research evaluation activities. To produce a good framework for research evaluation, the selection of appropriate measures is important. Quality aspects of the systems’ implementation should also not be overlooked. Incomplete or faulty data should not be used and metric computation formulas should be discussed and valid. Correctly integrated data from different information sources provide a complete picture of the scientific activity of an institution. Knowledge from the data integration field can be adapted in research information management. In this paper, we propose a research information system f…

Comparative evaluation of data preprocessing software tools to increase efficiency and accuracy in diffusion kurtosis imaging

2016

Security Threats in ZigBee-Enabled Systems: Vulnerability Evaluation, Practical Experiments, Countermeasures, and Lessons Learned

2013

In this paper, two practical attacks against ZigBee security are proposed and the latter one is also carried out in our laboratory environment. The attack scenarios are based on utilizing several vulnerabilities found from the main security components of ZigBee technology. The first attack is based on sabotaging the ZigBee End-Device by sending a special signal that makes it wake-up constantly until the battery runs out. The second attack is based on exploiting the key exchange process in ZigBee when using the Standard Security level defined by the ZigBee specification: we also demonstrate with experimental figures that attacks against ZigBee-enabled devices become practical by using our at…

The rationale for and practice of EIA follow-up: an analysis of Finnish road projects

2015

Follow-up is often considered to be a weak or even missing element in environmental impact assessment (EIA). Though it is recognized that follow-up practices could provide useful opportunities to learn from projects’ actual consequences, the practice is criticized for not achieving this goal. In this paper, we aim to clarify the relationship between the theoretical rationale for EIA follow-up and the actual practices carried out in a Finnish EIA context. An empirical analysis was performed with follow-up documents. The findings indicate that follow-ups focused on dealing with environmental impacts related to the physical environment, e.g., flora, fauna, and ground and surface waters. Social…

Comparative Evaluation of Biochemical Antioxidants as Neuroprotective Agents

2010

On the Stability of Stablecoins

2021

This paper investigates the volatility processes of stablecoins and their potential stochastic interdependencies with Bitcoin volatility. We employ a novel approach to choose the optimal combination for the power law exponent and the minimum value for the volatilities bending the power law. Our results indicate that Bitcoin volatility is well-behaved in a statistical sense with a finite theoretical variance. Surprisingly, the volatilities of stablecoins are statistically unstable and contemporaneously respond to Bitcoin volatility. Also, whereas the volatilities of stablecoins are not Granger-causal for Bitcoin volatility, lagged Bitcoin volatility exhibits Granger-causal effects on the vol…

Oral Squamous Cell Carcinoma on Gingiva, Edentulous Ridge, and Retromolar Pad: A Case Series

2021

(1) Background: Gingival cancer has a significant incidence and is often diagnosed at advanced stages. The aim of this paper is to highlight its clinical aspects on the basis of a case series analysis in order to promote awareness and improve the diagnosis process. (2) Methods: Oral cancers diagnosed and treated at three Italian University Hospitals over ten years were retrospectively investigated. Cancer location on the gingiva, edentulous ridge, and retromolar pad was addressed. Data regarding clinical features, stage at the diagnosis, and time from presenting symptoms to first medical consultation were retrieved. (3) Results: Thirty-three cancers located on the gingiva, edentulous ridge,…

El trabajo práctico en la enseñanza de las ciencias: una revisión

1996

Resumen basado en el de la publicación Resumen en inglés Se presenta una revisión sobre la efectividad de las prácticas en educación científica en los niveles secundario y terciario. A través de la revisión de más de cien referencias, se concluye que no se han proporcionado argumentos sólidos para justificar la gran cantidad de recursos materiales y humanos necesarios para la implementación de esta herramienta educativa. A pesar de estos resultados decepcionantes, los autores no se niega el papel central de las prácticas en la educación científica y se justifican estos resultados negativos al invocar la gran complejidad del tema, la ambigüedad que rodea el término «prácticas», y una metodol…

IS evolution benefit assessment: Challenges with economic investment criteria

2007

Maintenance and system evolution activities have a significant role in the information system (IS) life cycle. It has been estimated that approximately 80% of the total IT expenses are allocated for maintenance activities [20]. According to Lehman’s first law, maintenance is necessary, because software needs to be continuously improved or it will get out of date and cannot respond to the requirements of its environment [19]. Despite the importance of IS evolution investments, there is a gap between the IT related costs and company profitability [27]. Brynjolfssen [10] described this as a productivity paradox: information technology utilization has increased since the 70’s but simultaneously…