Likelihood Ratios for Deep Neural Networks in Face Comparison

In this study, we aim to compare the performance of systems and forensic facial comparison experts in terms of likelihood ratio computation to assess the potential of the machine to support the human expert in the courtroom. In forensics, transparency in the methods is essential. Consequently, state-of-the-art free software was preferred over commercial software. Three different open-source automated systems chosen for their availability and clarity were as follows: OpenFace, SeetaFace, and FaceNet; all three based on convolutional neural networks that return a distance (OpenFace, FaceNet) or similarity (SeetaFace). The returned distance or similarity is converted to a likelihood ratio using three different distribution fits: parametric fit Weibull distribution, nonparametric fit kernel density estimation, and isotonic regression with pool adjacent violators algorithm. The results show that with low-quality frontal images, automated systems have better performance to detect nonmatches than investigators: 100% of precision and specificity in confusion matrix against 89% and 86% obtained by investigators, but with good quality images forensic experts have better results. The rank correlation between investigators and software is around 80%. We conclude that the software can assist in reporting officers as it can do faster and more reliable comparisons with full-frontal images, which can help the forensic expert in casework

Effective Building Modelling for Energy Performance Contracting

Energy Performance Contracts (EPC) are contractual agreements between beneficiaries and energy service providers, where budgets are established in relation to a determined level of energy performance. Hence, the problem of forecasting the energy performance of buildings in the EPC tendering phase becomes relevant for the reliability of the overall contract. Unfortunately, fuzziness and incompleteness often characterize the technical information supporting EPC call for tenders. Furthermore, buildings that are the subjects of EPCs are normally quite complex public buildings (hospitals, schools, etc.) usually relatively old and not technically well known. Gathering information about such buildings is a time consuming and expensive process within the usually short time frame of EPC call for tenders. This paper investigates the application of Grey-Box modelling to the energy performance forecast of complex buildings, in perfectly and poorly informed operational cases. The proposed methodology offers a potential solution to the EPC operational requirements since it requires a substantially reduced parameter set. Results show that the proposed Grey-Box modelling can be used to arrange a calibration set-up with good forecasting performance. Furthermore, Grey-Box modelling allows an effective management of the information uncertainty usually present in the EPC context

Promoting energy users' behavioural change in social housing through a serious game

Housing represents about 29% of the total energy consumption in Europe and contributes with around 20% of emissions (European Commission 2013). Social housing represents about 12% of the total European housing stock and therefore is a significant target for energy efficiency measures by governments of EU member states. This paper is aimed at exploring how an innovative serious game could contribute to energy consumption and carbon emissions reduction in social housing by increasing the social tenants’ understanding and engagement in energy efficiency. The proposed solution is being developed under the auspices of the EnerGAware project (Energy Game for Awareness of energy efficiency in social housing communities), funded by the European Commission under the Horizon 2020 programme

Accounting for Carbon Footprint Flows in Wine Production Process. Case Study in Spanish Winery

Companies are gradually becoming conscious about the necessity of reducing their environmental impact and adopting low-carbon strategies in order to cope with increasing institutional and social demands. However, remaining competitive while reducing the environmental impact and improving the corporate image requires adopting sophisticated mechanisms boosting eco-efficiency and keeping costs tight. Material Flows Cost Accounting (MFCA) is an instrument that allows the monitoring of, measurement of, and accounting for physical and monetary processes along the production process. If extended to the supply chain, and applied to the energy usage and CO2 emissions, it allows one to account for the Carbon Footprint (CF) of a company and its products at any given stage of the value chain. The current paper presents a case study developed under the framework of a three-year project to introduce an energy use and carbon emissions monitoring and accounting system in a large winery company in Spain, based on the MFCA approach and CF accountability. Including the supply chain of the company and the whole farming cycle of its main input, the case study presents the method and phases adopted to implement the project, its direct and indirect results and outcomes, and the conclusions that can be extracted, which may be inspirational for practitioners and scholars envisaging similar projects

¿Reportar mediciones o midiendo para reportar? Medición interna de la Economía Circular desde una perspectiva de la contabilidad medioambiental y su interrelación

This paper aims to provide a model to measure the circular economy in businesses from an environmental accounting approach. The range of circular activities and the intensity with which companies implement them are analysed to increase the understanding of the relationship between the implementation of circular economy in firms and their different environmental management accounting and reporting practices. The study is developed through an empirical analysis based on a survey addressed to a sample of Spanish companies and designed to analyse different environmental accounting practices and measure the circular economy-related activities introduced by companies to close the material loops in processes. Main results indicate that circular economy activities are generally introduced by companies progressively, without clearly responding to common patterns for the introduction of the different circular principles and activities. A moderate correlation is observed between companies’ level of circular economy and their environmental management accounting practices, with a more significant correlation for a higher number of circular activities, particularly for firms that implement environmental management systems and have higher levels of transparency and sustainability information policies. Although companies are progressively adopting circular activities, the lack of specific indicators limits their internal measurement. Consequently, the information provided by organisations about the closing of material loops remains sporadic. The results highlight the need for built-in specific metrics to deploy environmental accounting practices in circular economy models.Este trabajo presenta un modelo para medir la economía circular en las empresas desde un enfoque de contabilidad medioambiental. Se analizan tanto el rango de actividades circulares como la intensidad con la que son implementadas para contribuir al conocimiento de la relación entre la introducción de la economía circular en las empresas y sus prácticas de contabilidad e información de gestión medioambiental. El estudio se desarrolla a través de un análisis empírico llevado a cabo a través de una encuesta dirigida a una muestra de empresas españolas diseñada para analizar las prácticas de contabilidad e información medioambiental y de medición de las actividades relacionadas con la economía circular introducidas por las empresas en sus procesos de cierre de círculos de materiales. Los principales resultados obtenidos indican que las actividades de economía circular son generalmente introducidas por las empresas progesivamente, sin responder de forma clara a paulas relacionadas con los distintos principios y actividades circulares. Se observa una correlación moderada entre el nivel de circularidad de las empresas y sus prácticas de contabilidad de gestión medioambiental, siendo la correlación mayor a mayor número de actividades, especialmente en lo que concierne a la implementación de sistemas de gestión ambiental o el desarrollo de políticas de transparencia y de información de sostenibilidad. A pesar de que las empresas estén adoptando progresivamente actividades circulares, la falta de indicadores específicos limita la medición interna de la economía circular por parte de las empresas. Por consiguiente, la información proporcionada por las organizaciones acerca del cierre de círculos sigue siendo esporádica. Los resultados ponen de manifiesto la necesidad de métricas integradas específicas para el despliegue de prácticas de contabildiad medioambiental para modelos de economía circular

Reporting measurements or measuring for reporting? Internal measurement of the Circular Economy from an environmental accounting approach and its relationship

This study presents a model to measure Circular Economy (CE) in businesses from the point of view of both the range of activities and the intensity with which they are implemented to close material circles. The scope of CE is analysed from an environmental accounting approach with the aim of knowing the degree of implementation of the CE and increasing our understanding of the relationship between the implementation of CE in firms and environmental management accounting and reporting practices (EMAR) developed.The results of an empirical survey conducted on a sample of Spanish companies will be used to examine environmental accounting and reporting practices that can be related to the implementation and measurement of CE and also to the progress being made by these companies in closing material and resource circles. The principal results show that CE activities are generally adopted without thinking in an integrated view of CE principles. Furthermore, there is a moderate correlation between the level of circularity of companies and the development of EMAR practices. This correlation is higher the greater the number of EMAR practices that have been developed, especially the implementation of environmental management systems or the development of transparency and reporting policies. Although firms are progressively adopting practices related to CE, the lack of specific indicators does not allow firms to specifically account for their effect on the closing of material loops. Este trabajo presenta un modelo para medir la Economía Circular (CE) en las empresas desde la perspectiva del rango de actividades y de la intensidad con que son implementadas para el cierre de círculos de materiales. El alcance de CE ha sido analizado desde un enfoque de la contabilidad medioambiental con el objetivo de saber el grado de implantación de la CE y aumentar la comprensión de la relación entre la implementación de la CE en las empresas y el desarrollo de prácticas de contabilidad e información de gestión medioambiental (EMAR).Los resultados de una encuesta dirigida a una muestra de empresas españolas han sido utilizados para analizar las prácticas de contabilidad e información medioambiental que pueden estar relacionadas con la implementación y medición de la CE, y con el progreso realizado por dichas compañías en el cierre de círculos de materiales y recursos. Los resultados principales muestran que las actividades de CE son generalmente adoptadas sin tener una visión global e integrada de los principios de la CE. Además, existe una correlación moderada entre el nivel de circularidad de las empresas y el desarrollo de las prácticas EMAR. Esta correlación es mayor cuanto mayor número de actividades de EMAR se han desarrollado, especialmente la implementación de sistemas de gestión ambiental o el desarrollo de políticas de transparencia y de información de sostenibilidad. Las empresas están adoptando progresivamente prácticas que están relacionadas con la CE, pero la falta de indicadores específicos no permite que las empresas contabilicen específicamente su efecto en el cierre de círculos

Are circular economy policies actually reaching organizations? Evidence from the largest Spanish companies

The Circular Economy (CE) model has recently gained a lot of attention as an effective way to cope with the urgent issues related to Climate Change and sustainability. The European Union (EU) has launched a series of reports, plans and activities known as the Circular Economy package which main goal is to expand the CE model throughout Europe, with large companies leading the initiative. This paper aims at assessing their engagement with the CE model, and if their actual understanding, practice and reporting of CE corresponds to the standards and principles promoted by the EU CE Action Plan. The research does also analyse if large companies’ reporting in terms of CE can be assimilated to their environmental sustainability reporting or if they consider it a different topic, with different drivers. The reports of the largest companies in Spain (IBEX35) were studied in full detail as well as their environmental scores (ESG) from DataStream database, and activity sector. Results show interesting implications highlighting how companies’ perception over CE, as reported, differs from the EU CE Action Plan approach and from the environmental sustainability framework, especially when taking into account the type of activity

Health-related quality of life in patients with a germline BRCA mutation and metastatic pancreatic cancer receiving maintenance olaparib

Qualitat de vida relacionada amb la salut; Olaparib; Càncer de pàncreesCalidad de vida relacionada con la salud; Olaparib, Cáncer de páncreasHealth-related quality of life; Olaparib; Pancreatic cancerBackground Patients with metastatic pancreatic cancer often have a detriment in health-related quality of life (HRQoL). In the randomized, double-blind, phase III POLO trial progression-free survival was significantly longer with maintenance olaparib, a poly(ADP-ribose) polymerase inhibitor, than placebo in patients with a germline BRCA1 and/or BRCA2 mutation (gBRCAm) and metastatic pancreatic cancer whose disease had not progressed during first-line platinum-based chemotherapy. The prespecified HRQoL evaluation is reported here. Patients and methods Patients were randomized to receive maintenance olaparib (300 mg b.i.d.; tablets) or placebo. HRQoL was assessed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30-item module at baseline, every 4 weeks until disease progression, at discontinuation, and 30 days after last dose. Scores ranged from 0 to 100; a ≥10-point change or difference between arms was considered clinically meaningful. Adjusted mean change from baseline was analysed using a mixed model for repeated measures. Time to sustained clinically meaningful deterioration (TSCMD) was analysed using a log-rank test. Results Of 154 randomized patients, 89 of 92 olaparib-arm and 58 of 62 placebo-arm patients were included in HRQoL analyses. The adjusted mean change in Global Health Status (GHS) score from baseline was <10 points in both arms and there was no significant between-group difference [−2.47; 95% confidence interval (CI) −7.27, 2.33; P = 0.31]. Analysis of physical functioning scores showed a significant between-group difference (−4.45 points; 95% CI −8.75, −0.16; P = 0.04). There was no difference in TSCMD for olaparib versus placebo for GHS [P = 0.25; hazard ratio (HR) 0.72; 95% CI 0.41, 1.27] or physical functioning (P = 0.32; HR 1.38; 95% CI 0.73, 2.63). Conclusions HRQoL was preserved with maintenance olaparib treatment with no clinically meaningful difference compared with placebo. These results support the observed efficacy benefit of maintenance olaparib in patients with a gBRCAm and metastatic pancreatic cancer.This study was sponsored by AstraZeneca and is part of an alliance between AstraZeneca and MSD (no grant number). This research was funded in part through the NIH/NCI Cancer Center Support Grant P30-17 CA008748