Search results for " greed"
showing 5 items of 5 documents
Iterated greedy with variable neighborhood search for a multiobjective waste collection problem
2020
Abstract In the last few years, the application of decision making to logistic problems has become crucial for public and private organizations. Efficient decisions clearly contribute to improve operational aspects such as cost reduction or service improvement. The particular case of waste collection service considered in this paper involves a set of economic, labor and environmental issues that translate into difficult operational problems. They pose a challenge to nowadays optimization technologies since they have multiple constraints and multiple objectives that may be in conflict. We therefore need to resort to multiobjective approaches to model and solve this problem, providing efficie…
Modeling Energy Demand Aggregators for Residential Consumers
2013
International audience; Energy demand aggregators are new actors in the energy scenario: they gather a group of energy consumers and implement a demand- response paradigm. When the energy provider needs to reduce the current energy demand on the grid, it can pay the energy demand aggregator to reduce the load by turning off some of its consumers loads or postponing their activation. Currently this operation involves only greedy energy consumers like industrial plants. In this paper we want to study the potential of aggregating a large number of small energy consumers like home users as it may happen in smart grids. In particular we want to address the feasibility of such approach by conside…
Whom to befriend to influence people
2020
Alice wants to join a new social network, and influence its members to adopt a new product or idea. Each person $v$ in the network has a certain threshold $t(v)$ for {\em activation}, i.e adoption of the product or idea. If $v$ has at least $t(v)$ activated neighbors, then $v$ will also become activated. If Alice wants to activate the entire social network, whom should she befriend? More generally, we study the problem of finding the minimum number of links that a set of external influencers should form to people in the network, in order to activate the entire social network. This {\em Minimum Links} Problem has applications in viral marketing and the study of epidemics. Its solution can be…
Consumer biases in the perception of organizational greed
2022
This article extends current models of how consumers judge or perceive organizations as greedy by employing the theoretical framework of motivated moral reasoning. We show that inherent features of an organization (size and “black sheep” status) and its behavior (relative frequency) bias consumer perceptions of organizational greed. We use an experimental methodology, present subjects with vignettes describing different scenarios, validate our questionnaire using confirmatory factor analysis, and test our hypotheses by employing a general linear model with covariates. Our findings suggest that consumer perceptions of organizational greed are subject to three effects: the underdog effect (St…
Ἀνὰ μέσον ἡδονῆςτε καὶ λύπης: Avidità umana e filantropia alla prova dell’oro in Diodoro
2021
In the Third book of his Bibliotheca, Diodorus Siculus includes an account of the Egyptian gold mines and describes the terrible living conditions of the slaves who are exploited to extract the metal. In this regard, Diodorus’ source is the historian Agatharchides of Cnidus, whose account is handed down by the Byzantine writer Photius. The comparison between the two texts allows scholars to highlight the different historical perspective of Diodorus, which privileges a worldview dominated by philanthropy and compassion for the most peripheral humanity. Further confirmation arises from the description of the Iberian mines (V 35-38), which Diodorus derives from the historian and philosopher Po…