Promoting sustainability culture among citizens: a system dynamic analysis of the role of schools

This paper concerns the issue of how to promote sustainable behaviours among citizens and consumers, that is increasingly viewed as crucial to tackle global social and environmental problems. More in detail, it investigates the potential role of schools at all levels, from kinder garden to unive rsity, in their relation to (mainly) local stakeholders. The study aims at shedding light on potential diffusion dynamics of sustainable behaviour among individuals when schools, universities and other stakeholders are involved. To do so, we develop a simp le system dynamics model, that is an approach that is well suited to model non - linear dynamics, interdependencies, and time lags typical of human decision processes and behaviour. The model proposed is a first preliminary attempt to highlight the system ef fects that could be triggered by active sustainability projects in schools. The variables included in the model and the data are taken from an action - research project \u2018Sustainability Labs\u2019 that is being carried out in a set of schools in the Milan (Italy) area. Results suggest that taking advantage of the school - university - local stakeholder triad is able to reach many people and in quite an engaging way that is likely to have interesting results in terms of behavioural change

Does the Sustainability of Food Products Influence Consumer Choices? The Case of Italy

In this paper we analyse if there is a diffuesed interest among consumers about the environmental impacts of their food choices, and try to capture the different types of attitudes of Italian consumers with respect to environmental sustainability of food products. The analysis builds on a survey based on vis-a-vis interviews with 240 consumers in Milan, and on a cluster analysis. The results highlight a high level of stated concern about environmental issues and about possible impacts of personal food consumption choices on the environment. Nevertheless, when investigating their actions during everyday shopping we have identified four groups of consumers: (1) those who take into consideration the environmental information on labels do not require additional information; (2) those for which environmental information on labels does not have a great effect on purchase, but would like to receive more information; (3) those for which the presence of environmental information directs product selection and would also like to receive more; (4) those that do not take into account environmental issues when purchasing and are not interested in receiving more information about the impacts of the products

Does the Sustainability of Food Products Influence Consumer Choices? The Case of Italy

In this paper we analyse if there is a diffused interest among consumers about the environmental impacts of their food choices, and try to capture the different types of attitudes of Italian consumers with respect to environmental sustainability of food products. The analysis builds on a survey based on vis-a-vis interviews with 240 consumers in Milan, and on a cluster analysis. The results highlight a high level of stated concern about environmental issues and about possible impacts of personal food consumption choices on the environment. Nevertheless, when investigating their actions during everyday shopping we have identified four groups of consumers: (1) those who take into consideration the environmental information on labels and do not require additional information; (2) those for which environmental information on labels does not have a great effect on purchase, but would like to receive more information; (3) those for which the presence of environmental information directs product selection and would also like to receive more; (4) those that do not take into account environmental issues when purchasing and are not interested in receiving more information about the impacts of the products

Does the Sustainability of Food Products Influence Consumer Choices? The Case of Italy

In this paper we analyse if there is a diffuesed interest among consumers about the environmental impacts of their food choices, and try to capture the different types of attitudes of Italian consumers with respect to environmental sustainability of food products. The analysis builds on a survey based on vis-a-vis interviews with 240 consumers in Milan, and on a cluster analysis. The results highlight a high level of stated concern about environmental issues and about possible impacts of personal food consumption choices on the environment. Nevertheless, when investigating their actions during everyday shopping we have identified four groups of consumers: (1) those who take into consideration the environmental information on labels do not require additional information; (2) those for which environmental information on labels does not have a great effect on purchase, but would like to receive more information; (3) those for which the presence of environmental information directs product selection and would also like to receive more; (4) those that do not take into account environmental issues when purchasing and are not interested in receiving more information about the impacts of the products

Food labelled Information: An Empirical Analysis of Consumer Preferences

This paper aims at analysing which kinds of currently labelled information are of interest and actually used by consumers, and which additional kinds could improve consumer choices. We investigate the attitude of consumers with respect to innovative strategies for the diffusion of product information, as smart-labels for mobile-phones. The empirical analysis was organised in focus groups followed by a survey on 240 consumers. Results show that the most important nutritional claims are vitamins, energy and fat content. Consumers show a high interest in the origin of the products, GMOs, environmental impact, animal welfare and type of breeding

Food labelled Information: An Empirical Analysis of Consumer Preferences

features. Nevertheless, the space available on packaging is limited and some indications are not used by consumers. This paper aims at analysing which kinds of currently labelled information are of interest and actually used by consumers, and which additional kinds could improve consumer choices. Moreover, we investigate the attitude of consumers with respect to innovative strategies for the diffusion of product information, considering in particular the development of a smart label for mobile phones. The empirical analysis is organised in two phases: first, three focus groups have been carried out and, second, a survey on 240 consumers was conducted on the basis of an ad hoc questionnaire. The results showed that, among nutritional claims, those more important to consumers are vitamins, energy and fat content, whereas sodium received a low score. Moreover, consumers show a high interest in the origin of the products and GMOs. Among the types of information that are currently scarcely available on food products, the major interest was received by the environmental impact, animal welfare and type of breeding

Spontaneous exciton dissociation enables spin state interconversion in delayed fluorescence organic semiconductors.

Engineering a low singlet-triplet energy gap (ΔEST) is necessary for efficient reverse intersystem crossing (rISC) in delayed fluorescence (DF) organic semiconductors but results in a small radiative rate that limits performance in LEDs. Here, we study a model DF material, BF2, that exhibits a strong optical absorption (absorption coefficient = 3.8 × 105 cm-1) and a relatively large ΔEST of 0.2 eV. In isolated BF2 molecules, intramolecular rISC is slow (delayed lifetime = 260 μs), but in aggregated films, BF2 generates intermolecular charge transfer (inter-CT) states on picosecond timescales. In contrast to the microsecond intramolecular rISC that is promoted by spin-orbit interactions in most isolated DF molecules, photoluminescence-detected magnetic resonance shows that these inter-CT states undergo rISC mediated by hyperfine interactions on a ~24 ns timescale and have an average electron-hole separation of ≥1.5 nm. Transfer back to the emissive singlet exciton then enables efficient DF and LED operation. Thus, access to these inter-CT states, which is possible even at low BF2 doping concentrations of 4 wt%, resolves the conflicting requirements of fast radiative emission and low ΔEST in organic DF emitters

Differential cross section measurements for the production of a W boson in association with jets in proton–proton collisions at √s = 7 TeV

Measurements are reported of differential cross sections for the production of a W boson, which decays into a muon and a neutrino, in association with jets, as a function of several variables, including the transverse momenta (pT) and pseudorapidities of the four leading jets, the scalar sum of jet transverse momenta (HT), and the difference in azimuthal angle between the directions of each jet and the muon. The data sample of pp collisions at a centre-of-mass energy of 7 TeV was collected with the CMS detector at the LHC and corresponds to an integrated luminosity of 5.0 fb[superscript −1]. The measured cross sections are compared to predictions from Monte Carlo generators, MadGraph + pythia and sherpa, and to next-to-leading-order calculations from BlackHat + sherpa. The differential cross sections are found to be in agreement with the predictions, apart from the pT distributions of the leading jets at high pT values, the distributions of the HT at high-HT and low jet multiplicity, and the distribution of the difference in azimuthal angle between the leading jet and the muon at low values.United States. Dept. of EnergyNational Science Foundation (U.S.)Alfred P. Sloan Foundatio

Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan

This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good