82 research outputs found

    Optimal sampling plan for clean development mechanism lighting projects with lamp population decay

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    This paper proposes a metering cost minimisation model that minimises metering cost under the constraints of sampling accuracy requirement for clean development mechanism (CDM) energy efficiency (EE) lighting project. Usually small scale (SSC) CDM EE lighting projects expect a crediting period of 10 years given that the lighting population will decay as time goes by. The SSC CDM sampling guideline requires that the monitored key parameters for the carbon emission reduction quantification must satisfy the sampling accuracy of 90% confidence and 10% precision, known as the 90/10 criterion. For the existing registered CDM lighting projects, sample sizes are either decided by professional judgment or by rule-of-thumb without considering any optimisation. Lighting samples are randomly selected and their energy consumptions are monitored continuously by power meters. In this study, the sampling size determination problem is formulated as a metering cost minimisation model by incorporating a linear lighting decay model as given by the CDM guideline AMS-II.J. The 90/10 criterion is formulated as constraints to the metering cost minimisation problem. Optimal solutions to the problem minimise the metering cost whilst satisfying the 90/10 criterion for each reporting period. The proposed metering cost minimisation model is applicable to other CDM lighting projects with different population decay characteristics as well

    The effect of explicit and tacit synergies on alliances radical innovation: The moderating roles of interfirm technological diversity and environmental technological dynamism

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    This study draws on theories of organizational inertia and relational view to examine how the pursuit of partnership synergy influences radical innovation in different technological contexts. We differentiate between two types of synergy: explicit synergy, defined as the potential to exchange interfirm operational elements to renew processes or capabilities, and tacit synergy, conceptualized as the potential to synthesize cross-boundary resources to develop new perspectives or thinking modes. We find that both explicit and tacit synergy have positive impacts on radical innovation, and such impacts are contingent on interfirm technological diversity and environmental technological dynamism in opposing ways. Specifically, environmental technological dynamism positively moderates the relationship between explicit synergy and radical innovation but not the relationship between tacit synergy and radical innovation. In contrast, interfirm technological divers ity positively moderates the relationship between tacit synergy and radical innovation but not the relationship between explicit synergy and radical innovation. Our study sheds new light on the generation of radical innovation in alliances. It also provides practitioners with useful guidelines for crafting synergy strategies that will facilitate the pursuit of radical innovation

    Building interfirm leadership: a relational identity perspective

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    While leadership has been recognized as an approach to facilitating network orchestration, little is known about the mechanism through which a hub firm enhances interfirm leadership. Grounded on the theory of social identity and network orchestration, we develop a framework of the enhancement of interfirm leadership, proposing that the tendency of building leadership rests on the hub firm’s ability to shape the partners’ relational identity. We identify three types of role-adoption that indicate seven actions a hub firm might take to establish such an identity. We suggest that the mechanism through which leadership emerges is contingent on relationship duration, dependence asymmetry, and competition intensity

    Modelling required energy consumption with equivalence scales

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    Due to difficulties in accessing detailed energy modelling and usage data that are required to estimate energy needs that are responsive to local circumstances, we propose an equivalence scale approach to the determination of required energy consumption. Our method requires the estimation of energy equivalence scales that are used to rescale reference household energy consumption and, thus, yield household-specific energy requirements. We apply the method using readily available income and expenditure data, finding that estimated required energy is well above actual energy expenditure for low- and middle-income households, which is consistent with an expectation that basic energy needs for poor households may not be met. The proposed approach is general enough to incorporate other features that might be deemed relevant and available in other settings, and, therefore, can be used to examine the affordability component of SDG 7, undertake energy poverty analysis or design appropriate policies.http://www.iaee.org/en/publications/journal.aspxhj2023Economic

    O Serviço Social nas Autarquias e a sua Importância para o Desenvolvimento Social Local

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    Aprofundar o conhecimento do Serviço Social e reflectir sobre a prática profissional do Assistente Social e a criação de políticas sociais com vista ao desenvolvimento social local, nomeadamente, na Câmara Municipal da Batalha, constituíram o objectivo de estudo. A descentralização do Poder Central para o Poder Local, assente na proximidade ao cidadão, mantém-se em discussão na agenda política e ganha maior relevo na conjuntura actual, com a reforma do Poder Local. Contudo, até ao momento, as transferências no âmbito da Acção Social mantêm-se bastante genéricas e sem regulamentação. Por essa razão, o Poder Local intervém na área social sem que essas competências estejam delineadas pela tutela e muitas vezes sem o devido financiamento, deixando aos Executivos Municipais a decisão sobre a criação de políticas sociais. Neste sentido, com o intuito de assegurarem os interesses das suas populações, as Câmaras Municipais implementam medidas sociais de âmbito local, que se revelam mais ou menos intensas, consoante o importância que lhes é dada por cada Executivo, que define as áreas de intervenção prioritárias e quais os recursos disponíveis para investir no domínio social. O Serviço Social revela ser um importante recurso das autarquias na criação das políticas sociais locais, na medida em que o Assistente Social, ao conhecer o território e intervir mais próximo dos cidadãos, pode propor programas de desenvolvimento local, adequados aos interesses da população. No caso particular da Câmara Municipal da Batalha, reflectiu-se sobre a prática da Assistente Social e evocaram-se as políticas sociais por esta planeadas e desenvolvidas, revelando o seu contributo para o desenvolvimento social do concelho. Atestou-se, em género de conclusão, que, apesar do Assistente Social ter um papel cada vez mais preponderante na execução das políticas de desenvolvimento local, a sua prática profissional tem limitações por não ser capaz, por si só, de resolver problemas sociais de génese estrutural, influenciados pela conjuntura nacional e internacional

    Pessimistic Portfolio Choice with One Safe and One Risky Asset and Right Monotone Probability Difference Order

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    As is well known, a first-order dominant deterioration in risk does not necessarily cause a risk-averse investor to reduce his holdings of that deteriorated asset under the expected utility framework, even in the simplest portfolio setting with one safe asset and one risky asset. The purpose of this paper is to derive conditions on shifts in the distribution of the risky asset under which the counterintuitive conclusion above can be overthrown under the rank-dependent expected utility framework, a more general and prominent alternative of the expected utility. Two new criterions of changes in risk, named the monotone probability difference (MPD) and the right monotone probability difference (RMPD) order, are proposed, which is a particular case of the first stochastic dominance. The relationship among MPD, RMPD, and the other two important stochastic orders, monotone likelihood ratio (MLR) and monotone probability ratio (MPR), is examined. A desired comparative statics result is obtained when a shift in the distribution of the risky asset satisfies the RMPD criterion
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