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Pasi Tyrväinen - One of the best experts on this subject based on the ideXlab platform.
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Role of acquisition intervals in Private and public cloud Storage costs
Decision Support Systems, 2014Co-Authors: Gabriella Laatikainen, Oleksiy Mazhelis, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in the foreseeable future to reach 8 ZB by 2015. Traditionally, organizations proactively have built and managed their Private Storage facilities to cope with the growing demand for Storage capacity. Recently, many organizations have instead welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services due to the proliferation of public cloud infrastructure offerings. The comparative cost-efficiency of these two alternatives depends on a number of factors, such as the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study the relationship between the cost-efficiency of the Private vs. public Storage and the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that for commonly encountered exponential growth of Storage demand, shorter acquisition intervals increase the likelihood of less expensive Private Storage solutions compared with public cloud infrastructure. This phenomenon is also numerically illustrated in the paper using the Storage needs encountered by a university back-up and archiving service as an example. Because the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, via provisioning schedules of Storage equipment providers, and internal practices of the organization, among other factors, organizations that own a Private Storage solution may want to control some of these factors to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.
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impact of Storage acquisition intervals on the cost efficiency of the Private vs public Storage
International Conference on Cloud Computing, 2012Co-Authors: Oleksiy Mazhelis, Gabriella Fazekas, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in foreseeable future reaching 8ZB already by 2015. Traditionally, in order to cope with the growing demand for Storage capacity, organizations proactively built and managed their Private Storage facilities. Recently, with the proliferation of public cloud infrastructure offerings, many organizations, instead, welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services. The comparative cost-efficiency of these two alternatives depends on a number of factors, among which are e.g. the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study how the cost-efficiency of the Private vs. public Storage depends on the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that the shorter the acquisition interval, the more likely it is that the Private Storage solution is less expensive as compared with the public cloud infrastructure. This phenomenon is also illustrated in the paper numerically using the Storage needs encountered by a university back-up and archiving service as an example. Since the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, by the provisioning schedules of Storage equipment providers, and by internal practices of the organization, among other factors, the organization owning a Private Storage solution may want to control some of these factors in order to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.
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IEEE CLOUD - Impact of Storage Acquisition Intervals on the Cost-Efficiency of the Private vs. Public Storage
2012 IEEE Fifth International Conference on Cloud Computing, 2012Co-Authors: Oleksiy Mazhelis, Gabriella Fazekas, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in foreseeable future reaching 8ZB already by 2015. Traditionally, in order to cope with the growing demand for Storage capacity, organizations proactively built and managed their Private Storage facilities. Recently, with the proliferation of public cloud infrastructure offerings, many organizations, instead, welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services. The comparative cost-efficiency of these two alternatives depends on a number of factors, among which are e.g. the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study how the cost-efficiency of the Private vs. public Storage depends on the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that the shorter the acquisition interval, the more likely it is that the Private Storage solution is less expensive as compared with the public cloud infrastructure. This phenomenon is also illustrated in the paper numerically using the Storage needs encountered by a university back-up and archiving service as an example. Since the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, by the provisioning schedules of Storage equipment providers, and by internal practices of the organization, among other factors, the organization owning a Private Storage solution may want to control some of these factors in order to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.
Oleksiy Mazhelis - One of the best experts on this subject based on the ideXlab platform.
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Role of acquisition intervals in Private and public cloud Storage costs
Decision Support Systems, 2014Co-Authors: Gabriella Laatikainen, Oleksiy Mazhelis, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in the foreseeable future to reach 8 ZB by 2015. Traditionally, organizations proactively have built and managed their Private Storage facilities to cope with the growing demand for Storage capacity. Recently, many organizations have instead welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services due to the proliferation of public cloud infrastructure offerings. The comparative cost-efficiency of these two alternatives depends on a number of factors, such as the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study the relationship between the cost-efficiency of the Private vs. public Storage and the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that for commonly encountered exponential growth of Storage demand, shorter acquisition intervals increase the likelihood of less expensive Private Storage solutions compared with public cloud infrastructure. This phenomenon is also numerically illustrated in the paper using the Storage needs encountered by a university back-up and archiving service as an example. Because the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, via provisioning schedules of Storage equipment providers, and internal practices of the organization, among other factors, organizations that own a Private Storage solution may want to control some of these factors to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.
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impact of Storage acquisition intervals on the cost efficiency of the Private vs public Storage
International Conference on Cloud Computing, 2012Co-Authors: Oleksiy Mazhelis, Gabriella Fazekas, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in foreseeable future reaching 8ZB already by 2015. Traditionally, in order to cope with the growing demand for Storage capacity, organizations proactively built and managed their Private Storage facilities. Recently, with the proliferation of public cloud infrastructure offerings, many organizations, instead, welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services. The comparative cost-efficiency of these two alternatives depends on a number of factors, among which are e.g. the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study how the cost-efficiency of the Private vs. public Storage depends on the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that the shorter the acquisition interval, the more likely it is that the Private Storage solution is less expensive as compared with the public cloud infrastructure. This phenomenon is also illustrated in the paper numerically using the Storage needs encountered by a university back-up and archiving service as an example. Since the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, by the provisioning schedules of Storage equipment providers, and by internal practices of the organization, among other factors, the organization owning a Private Storage solution may want to control some of these factors in order to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.
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IEEE CLOUD - Impact of Storage Acquisition Intervals on the Cost-Efficiency of the Private vs. Public Storage
2012 IEEE Fifth International Conference on Cloud Computing, 2012Co-Authors: Oleksiy Mazhelis, Gabriella Fazekas, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in foreseeable future reaching 8ZB already by 2015. Traditionally, in order to cope with the growing demand for Storage capacity, organizations proactively built and managed their Private Storage facilities. Recently, with the proliferation of public cloud infrastructure offerings, many organizations, instead, welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services. The comparative cost-efficiency of these two alternatives depends on a number of factors, among which are e.g. the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study how the cost-efficiency of the Private vs. public Storage depends on the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that the shorter the acquisition interval, the more likely it is that the Private Storage solution is less expensive as compared with the public cloud infrastructure. This phenomenon is also illustrated in the paper numerically using the Storage needs encountered by a university back-up and archiving service as an example. Since the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, by the provisioning schedules of Storage equipment providers, and by internal practices of the organization, among other factors, the organization owning a Private Storage solution may want to control some of these factors in order to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.
Fabienne Femenia - One of the best experts on this subject based on the ideXlab platform.
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The effects of direct Storage subsidies under limited rationality: a general equilibrium analysis
Agricultural Economics, 2015Co-Authors: Fabienne FemeniaAbstract:We study here the effects of a public subsidy to Private Storage set up at world level. To simulate the welfare effects and impacts on market fluctuations of this subsidy, we use a dynamic Computable General Equilibrium model assuming imperfect expectations. We also perform different statistical analysis based on our CGE results and show that the Storage subsidy can have the undesired effect of destabilizing agricultural markets, depending on the form of economic agents’ price expectations and on the structure of the shocks impacting the agricultural production.
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Should Private Storage be subsidized to stabilize agricultural markets after price support schemes are removed? A general equilibrium analysis applied to european reforms
2012Co-Authors: Fabienne FemeniaAbstract:In this paper, we focus on the volatility of agricultural markets generated by a reform of the CAP, and examine the effect of a subsidization of Private Storage at world level on this volatility. Storage, is based on inter temporal arbitrages of stockholders who buy stocks when prices are low to sell them when price increase, thus limiting price fluctuations. However, some economic studies still question its efficiency as a risk managing instrument, showing that the market stabilization induced by stockholding behaviors is sensitive to Storage costs, or advocating the possible destabilizing role of speculators. This raises the question of the potential for a public intervention on this instrument, like the subsidization of Storage costs to enhance the Storage activity. But the effects of such subsidies on producers’ decisions have to be taken into account. Furthermore, one can question their effects on speculative behaviors, especially if stockholders don’t have perfect expectations. To take these elements into account, we use a Dynamic CGE model. Indeed, this framework allows to consider the behaviors of all economic agents, the possible transfer and sharing of risk between agents, sectors or regions, and to simulate the evolution of markets under different policy scenario. The originalities of this model are that: it is fully dynamic in the sense that the inter temporal dimension of economic decisions is taken into account:, Storage and Private stockholding behaviors are endogenous; and we rely on an imperfect expectation assumption, so as to represent the endogenous aspect of market volatility that can be generated by expectation errors and to acknowledge the possible destabilizing role of speculators in that case. Concerning the dynamics of the model, first, as commonly done in dynamic CGE models, the accumulation of capital stocks and foreign debt from one period to the other debt creates a link between...
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Should Private Storage be subsidized to stabilize agricultural markets after price support schemes are removed? A general equilibrium analysis applied to european reforms
2012Co-Authors: Fabienne FemeniaAbstract:Currently, there is increased focus on the methods in which public interventions stabilize agricultural markets. The subsidization of Private Storage is one of the options advocated. However, the efficiency of such an instrument is still being discussed and has not yet been explored in the context of imperfect information. Nevertheless, this is one of the potential sources of market fluctuations and one of the arguments in favor of a public intervention on agricultural markets. To fill this gap, our main objective in this paper is to simulate the effects of a subsidization of Storage costs, aimed at stimulating Private Storage at the world level, on markets fluctuations following Common Agricultural Policy (CAP) reforms, so as to stimulate Private Storage at the world level, and to study the welfare effects of this public intervention. To do so, we conduct a dynamic general equilibrium analysis and assume that agents have imperfect expectations. We simulate the effects of a radical reform: the complete removal of the CAP in arable crops sectors; we then study the impacts of a subsidization of wheat Storage costs at the world level. Our results first show that the CAP removal in arable crop sectors destabilizes European markets and tends to stabilize markets in the United States and in the rest of the world. Then, the subsidization of Private Storage effectively boosts the Storage activity; it generates welfare losses, but these are very limited compared with the world welfare gains arising from the CAP removal. However, the effects of this subsidy on market volatilities are contrasted: we find some cases where crop markets are actually stabilized following the subsidy, but other cases with the opposite result, where markets are destabilized. To understand the factors related to the effects of the subsidy, we perform a logistic regression and show that results are dependent on the form of the agents’ expectations and on some distributional characteristics of the productivity shocks arising in the crop sectors. Namely, the more that information from the past is taken into account by economic agents to make their decision, and the more the productivity shocks are negatively auto correlated, the more the Storage subsidy is efficient in stabilizing the markets.
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Should Private Storage be subsidized to stabilize agricultural markets after price support schemes are removed
2012Co-Authors: Fabienne FemeniaAbstract:Currently, there is increased focus on the methods in which public interventions stabilize agricultural markets. The subsidization of Private Storage is one of the options advocated. However, the efficiency of such an instrument is still being discussed and has not yet been explored in the context of imperfect information. Nevertheless, this is one of the potential sources of market fluctuations and one of the arguments in favor of a public intervention on agricultural markets. To fill this gap, our main objective in this paper is to simulate the effects of a subsidization of Storage costs, aimed at stimulating Private Storage at the world level, on markets fluctuations following Common Agricultural Policy (CAP) reforms, so as to stimulate Private Storage at the world level, and to study the welfare effects of this public intervention.
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To Subsidize or Not to Subsidize Private Storage? Evaluation of the Effects of Private Storage Subsidies as an Instrument to Stabilize Agricultural Markets After CAP Reforms
2011Co-Authors: Fabienne FemeniaAbstract:We study here the effects on agricultural markets volatility of a public subsidy to Private Storage set up after a CAP reform. This kind of instrument is indeed often advocated in current international debates focusing on the management of agricultural price fluctuations. We use a dynamic Computable General Equilibrium model to simulate the welfare and market stabilizing impacts of such a subsidy. The model we use assumes that agents have imperfect expectations, which allows a representation of the endogenous dimension of agricultural market volatility. Our results corroborate the fact, often advocated, that removing the european price support scheme tends to increase the agricultural markets volatility in the European Union and to decrease this volatility in the rest of the world. Furthermore, we show that Private stockholding behaviours allow a reduction of market volatility, both before and after the political reform. On the other hand, the set up of a public subsidy aimed at stimulating Private stockholdings comes to scramble the market signals sent to agricultural producers and therefore has a destabilizing effect.
Ellen Delpapa - One of the best experts on this subject based on the ideXlab platform.
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Obstetricians and Their Role in Cord Blood Banking: Promoting a Public Model
Obstetrics and gynecology, 2013Co-Authors: M.m. Herlihy, Ellen DelpapaAbstract:Umbilical cord blood, the blood remaining in the umbilical cord at birth, can be collected at birth and be a source of stem cells for a patient in need of a bone marrow transplant. Obstetricians and other health care practitioners are recognized as a patient's primary source for medical information affecting the mother and her neonate and frequently are asked to provide education and guidance regarding options of Private and public cord blood banking. As the use of cord blood continues to grow in medicine and research uncovers more potential for cord blood, cord blood banking has become an important resource. The Stem Cell Therapeutic and Research Act has provided funding to expand public banking initiatives in the United States and to create a more ethnically diverse inventory of units. Private Storage is not advocated unless there is an identified need in the family such that banked cord blood would offer a benefit. A recent report outlined the challenges of increasing participation and inventory, particularly among minority groups. Obstetricians and other health care practitioners should have a primary role in efforts to increase awareness of umbilical cord blood donation and be involved in initiatives to expand current public banking activities.
Gabriella Fazekas - One of the best experts on this subject based on the ideXlab platform.
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impact of Storage acquisition intervals on the cost efficiency of the Private vs public Storage
International Conference on Cloud Computing, 2012Co-Authors: Oleksiy Mazhelis, Gabriella Fazekas, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in foreseeable future reaching 8ZB already by 2015. Traditionally, in order to cope with the growing demand for Storage capacity, organizations proactively built and managed their Private Storage facilities. Recently, with the proliferation of public cloud infrastructure offerings, many organizations, instead, welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services. The comparative cost-efficiency of these two alternatives depends on a number of factors, among which are e.g. the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study how the cost-efficiency of the Private vs. public Storage depends on the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that the shorter the acquisition interval, the more likely it is that the Private Storage solution is less expensive as compared with the public cloud infrastructure. This phenomenon is also illustrated in the paper numerically using the Storage needs encountered by a university back-up and archiving service as an example. Since the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, by the provisioning schedules of Storage equipment providers, and by internal practices of the organization, among other factors, the organization owning a Private Storage solution may want to control some of these factors in order to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.
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IEEE CLOUD - Impact of Storage Acquisition Intervals on the Cost-Efficiency of the Private vs. Public Storage
2012 IEEE Fifth International Conference on Cloud Computing, 2012Co-Authors: Oleksiy Mazhelis, Gabriella Fazekas, Pasi TyrväinenAbstract:The volume of worldwide digital content has increased nine-fold within the last five years, and this immense growth is predicted to continue in foreseeable future reaching 8ZB already by 2015. Traditionally, in order to cope with the growing demand for Storage capacity, organizations proactively built and managed their Private Storage facilities. Recently, with the proliferation of public cloud infrastructure offerings, many organizations, instead, welcomed the alternative of outsourcing their Storage needs to the providers of public cloud Storage services. The comparative cost-efficiency of these two alternatives depends on a number of factors, among which are e.g. the prices of the public and Private Storage, the charging and the Storage acquisition intervals, and the predictability of the demand for Storage. In this paper, we study how the cost-efficiency of the Private vs. public Storage depends on the acquisition interval at which the organization re-assesses its Storage needs and acquires additional Private Storage. The analysis in the paper suggests that the shorter the acquisition interval, the more likely it is that the Private Storage solution is less expensive as compared with the public cloud infrastructure. This phenomenon is also illustrated in the paper numerically using the Storage needs encountered by a university back-up and archiving service as an example. Since the acquisition interval is determined by the organization's ability to foresee the growth of Storage demand, by the provisioning schedules of Storage equipment providers, and by internal practices of the organization, among other factors, the organization owning a Private Storage solution may want to control some of these factors in order to attain a shorter acquisition interval and thus make the Private Storage (more) cost-efficient.