Construction cost estimation is one of the essential processes in construction management. Project cost is a complex engineering problem due to various factors affecting the construction industry. Accurate cost estimation is important in construction management and significantly impacts project performance. Artificial intelligence models have been effectively implemented in construction management studies in recent years owing to their capability to deal with complex problems. In this research, extreme gradient boosting is developed as an advanced input selector algorithm and (...) coupled with three AI models, including random forest, artificial neural network, and support vector machine for cost estimation. Datasets were gathered based on a survey conducted on 90 building projects in Iraq. Statistical indicators and graphical methods were used to evaluate the developed models. Several input predictors were used, and XGBoost highlighted inflation as the most crucial parameter. The results indicated that the best prediction was attained by XGBoost-RF using six input parameters, with r-squared and the mean absolute percentage error equal to 0.87 and 0.25, respectively. The comparison results revealed that all AI models showed good prediction performance when applied to datasets affected by more than two parameters. The outcomes of this research revealed an optimistic strategy that can help decision makers select the influencing parameters in the early phases of project management. Also, developing a prediction model with high precision results can assist the project’s estimators in decreasing the errors in the cost estimation process. (shrink)

Adaptation to the impacts of climate change is a rapidly emerging, new area of knowledge and policy that is coevolving with political negotiations in the UN Framework Convention on Climate Change. As such, it offers the opportunity to study the coproduction of knowledge and social order within the climate change regime. A subset of adaptation knowledge relates to cost estimates of adaptation policy. Here the methodology of the adaptation cost studies are reviewed and compared to economic theory. Although (...) presented as technical and apolitical applications of economic theory, this analysis shows that these studies in fact differ significantly and consistently from theory in that they largely ignore autonomous adaptation and almost universally cost complete adaptation rather than an efficient level of adaptation. It is suggested that these differences are related to the political nature of adaptation cost estimates, which are closely connected with normative claims for both adaptation funding for developing countries and compensation for the unavoidable climate change impacts. As such, adaptation cost estimates are an example of boundary objects, used to manage normative and highly politicized claims for restitution using scientific and therefore apolitical language and framings. (shrink)

This book uses an incidence approach to look at the economic repercussions of birth defects. The authors investigate eighteen of the most clinically significant birth defects affecting 35,000 newborns each year in our country. Their assessments suggest that the annual cost of these eighteen birth defects, together, is more than eight billion dollars . The authors describe in detail their methodology and data sources while providing thorough accounts of each of the eighteen birth defects. Waitzman, Scheffler, and Romano break (...) new ground by using reports from the California Birth Defects Monitoring Program in order to provide cost estimates. They illustrate to the reader how cost estimates of specific birth defects can be used to justify prevention interventions and strategies. In chapter seven, they provide an important example, showing cost-benefit analysis of a program of folate supplementation of food to prevent neutral tube defects. Contents: List of Tables; Preface; Acknowledgements; Introduction; The Application of Cost-of-Illness Methodology To Birth Defects; The Direct Medical Costs of Birth Defects; Nonmedical Direct Costs of Birth Defects: Developmental Services and Special Education; The Indirect Costs of Birth Defects; Premature Mortality and Heightened Morbidity; An Assessment of Total Costs and Policy Implications; Description of Birth Defects; Description of Major Data Sources; Index. (shrink)

This article provides a method for estimating the bounds of transaction costs in horizontal mergers. Consider, for example, a completed monopoly merger in linear Cournot oligopolies with 10 symmetric firms. The method shows that its transaction costs are at most 25% (78%) of total premerger profits if there is zero (100%) excess capacity. Such estimations can be extended in a straightforward manner to other mergers and other oligopoly models. The estimation is based both on the profitability precondition, and on the (...) non-empty core precondition, which postulates that the split of a merger’s profits be in its core. The article shows that the core in linear Cournot oligopolies has a non-empty interior, and indicates that the non-empty core precondition also sheds new lights on understanding important issues such as the stylized fact that mergers are likely to occur in markets plagued by excess capacities; why profitable mergers might not be formed; and why completed mergers might break up in the future. (shrink)

Autonomy, an individual's right to make personal decisions regarding his/her own health, represents one of the major ethical principles of medicine. While there are many examples citing the benefits this right provides for the individual, the impact that personal healthcare decisions have on others is often neglected. Here, evidence from end-stage renal disease is reviewed to hypothesise the creation of a universal kidney donation programme that although provides unparalleled benefits to its citizens, relies on the participation of a large proportion (...) of the society. Given that this essay also addresses the public's major concerns regarding kidney donation, one of the only remaining implementation barriers is the individuals' right not to participate. Therefore, irrespective of the humane and complex emotionally laden reasons for not enrolling in such programmes, this essay provides some estimates of the significant resource and quality of life costs associated with autonomy. Assuming humans are competent to make informed personal healthcare choices, similar to recent efforts to increase awareness about the negative impact of certain lifestyle choices on global warming, citizens should also be better informed about the medical costs their autonomy has on society. (shrink)

American universities rely upon a large workforce of adjunct faculty—contract workers who receive low pay, no benefits, and no job security. Many news sources, magazines, and activists claim that adjuncts are exploited and should receive better pay and treatment. This paper never affirms nor denies that adjuncts are exploited. Instead, we show that any attempt to provide a significantly better deal faces unpleasant constraints and trade-offs. “Adjunct justice” would cost universities somewhere between an additional $15–50 billion per year. At (...) most, universities can provide justice for a minority of adjuncts at the expense of the majority, as well as at the expense of poor students. Universities may indeed be exploiting adjuncts, but they cannot rectify this mistake without significant moral costs. (shrink)

Cognitive Science, Volume 46, Issue 8, August 2022.

BackgroundThe amount and value of researchers’ peer review work is critical for academia and journal publishing. However, this labor is under-recognized, its magnitude is unknown, and alternative ways of organizing peer review labor are rarely considered.MethodsUsing publicly available data, we provide an estimate of researchers’ time and the salary-based contribution to the journal peer review system.ResultsWe found that the total time reviewers globally worked on peer reviews was over 100 million hours in 2020, equivalent to over 15 thousand years. (...) The estimated monetary value of the time US-based reviewers spent on reviews was over 1.5 billion USD in 2020. For China-based reviewers, the estimate is over 600 million USD, and for UK-based, close to 400 million USD.ConclusionsBy design, our results are very likely to be under-estimates as they reflect only a portion of the total number of journals worldwide. The numbers highlight the enormous amount of work and time that researchers provide to the publication system, and the importance of considering alternative ways of structuring, and paying for, peer review. We foster this process by discussing some alternative models that aim to boost the benefits of peer review, thus improving its cost-benefit ratio. (shrink)

Trees architectural study shows gradients in the meristematic activity. This activity is described by the number of internodes per growth unit, which is considered as the output of a dynamic random process. Several species were observed, which led us to propose and then estimate some mathematical models. Computing the functioning of a tree in a given environment therefore involves finding the probability function of the meristems and following the evolution of the parameters of this law along the botanical gradients (...) (order, trend, acrotony) within its architecture. (shrink)

The cost of basic income is typically estimated for a particular year. However, to assess the financial feasibility of basic income, it is also important to consider how much basic income will cost in the future. This is especially important in countries experiencing an ageing population, where the proportion of workers is expected to shrink. This article considers basic income as a universal life annuity and develops two models based on actuarial concepts to estimate the flat tax (...) rate required to finance basic income. The first model considers the cost of basic income over the lifetime of the current population and the second model additionally considers changing population dynamics. The proposed models are conceptually simple, providing a straightforward way to assess the financial feasibility of basic income. Using Singapore data, the models show that the monthly cut-off income separating net contributors and net recipients is around $2710 and benefits around 39 % of adult residents. A tax rate of around 22 % is required to support a basic income of $600. (shrink)

Health reform proposals tend to be rich with details and dimensions. The primary goal of health reform is typically to extend health coverage to people who lack it. Yet even the most similar of plans differ in terms of exactly who is targeted for assistance, the means by which assistance is delivered, and the type of health coverage promoted. Moreover, the Byzantine nature of the existing U.S. health system means that any reform plan can appear complex. The plan that aims (...) for a new, simple health system will require radical changes to achieve it, while the plan that strives to be the least disruptive will have extensive rules that target assistance while maintaining the existing sources of coverage. Indeed, some have argued that the complexity inherent in meaningful reform is an impediment to reform itself. (shrink)

This paper provides estimates of the economic welfare effects of tobacco taxation in India, S.Africa, S.Korea, Japan and the European Union. It argues that past studies of the cost-benefits of smoking are flawed as they fail to net out Paretoirrelevant pecuniary externalities. It estimates tobacco demand for both the myopic and rational addiction models and finds the latter invariably perform better. It finds that the net welfare losses associated with current tax levels an increase over current taxation of 10% (...) and an increase of 10% a year for!0 years in all these countries, but particularly in the poorest, are large.Cet article fournit des estimations des effets des taxes sur le tabac sur le bien-être : l’Inde, l’Afrique du Sud, la Corée du Sud, le Japon et l’Union Européenne. L’article soutient que les analyses antérieures des coûts et des bénéfices de la cigarette sont erronées car elles ne tiennent pas compte des externalités pécuniaires non pertinentes dans un monde parétien. Il donne des estimations de la demande non tant pour les modèles myopes que pour ceux supposant une addiction rationnelle et constate que ces derniers donnent de meilleurs résultats. Il en ressort aussi que les pertes nettes de bien-être associées aux niveaux actuels de taxes, à une augmentation de 10% des taxes actuelles et à une augmentation annuelle de 10% des taxes sur 10 ans dans toutes les zones étudiées, mais particulièrement dans les plus pauvres d’entre elles, sont conséquentes. (shrink)

Trees architectural study shows gradients in the meristematic activity. This activity is described by the number of internodes per growth unit, which is considered as the output of a dynamic random process. Several species were observed, which led us to propose and then estimate some mathematical models. Computing the functioning of a tree in a given environment therefore involves finding the probability function of the meristems and following the evolution of the parameters of this law along the botanical gradients (...) (order, trend, acrotony) within its architecture. (shrink)

This study investigated the impact of three prior distributions: matched, standard vague, and hierarchical in Bayesian estimation parameter recovery in two and one parameter models. Two Bayesian estimation methods were utilized: Markov chain Monte Carlo (MCMC) and the relatively new, Variational Bayesian (VB). Conditional (CML) and Marginal Maximum Likelihood (MML) estimates were used as baseline methods for comparison. Vague priors produced large errors or convergence issues and are not recommended. For both MCMC and VB, the hierarchical and matched priors showed (...) the lowest root mean squared errors (RMSEs) for ability estimates; RMSEs of difficulty estimates were similar across estimation methods. For the standard errors (SEs), MCMC-hierarchical displayed the largest values across most conditions. SEs from the VB estimation were among the lowest in all but one case. Overall, VB-hierarchical, VB-matched, and MCMC-matched performed best. VB with hierarchical priors are recommended in terms of their accuracy, and cost and (subsequently) time effectiveness. (shrink)

Of all the different types of public buildings, hospitals are the biggest energy consumers. Cooling systems for air conditioning and healthcare uses are particularly energy intensive. Forecasting hospital thermal-cooling demand is a remarkable and innovative method capable of improving the overall energy efficiency of an entire cooling system. Predictive models allow users to forecast the activity of water-cooled generators and adapt power generation to the real demand expected for the day ahead, while avoiding inefficient subcooling. In addition, the maintenance costs (...) related to unnecessary starts and stops and power-generator breakdowns occurring over the long term can be reduced. This study is based on the operations of a real hospital facility and details the steps taken to develop an optimal and efficient model based on a genetic methodology that searches for low-complexity models through feature selection, parameter tuning and parsimonious model selection. The methodology, called GAparsimony, has been tested with neural networks, support vector machines and gradient boosting techniques. Finally, a weighted combination of the three best models was created. The new operational method employed herein can be replicated in similar buildings with similar water-cooled generators. (shrink)

In their controversial 2016 paper in this journal, Brennan and Magness argue that fair pay for part-time, adjunct faculty would be unaffordable for most colleges and universities and would harm students as well as many adjunct faculty members. In this critique, I show that their cost estimates fail to take account of the potential benefits of fair pay for adjunct faculty and are based on implausible assumptions. I propose that pay per course for new adjunct faculty members should be (...) tied to pay per course for new full-time non-tenure track instructors or to pay per course for new assistant professors. That framework for adjunct faculty justice yields an aggregate cost range of $18.5–$27.9 billion, one-third to one-half lower than the range computed by Brennan and Magness. Its opportunity cost would not be borne by students since students and faculty are complements, not substitutes, in the educational process. Instead it could be financed by reducing spending on non-educational purposes. Current adjunct faculty members would be protected from job displacement in this justice framework. The real obstacle to achieving justice for adjunct faculty is the priorities of university administrators, not budget constraints or opportunity costs. (shrink)

Statistical power is often a concern for clustered randomized control trials (RCTs) due to variance inflation from design effects and the high cost of adding study clusters (such as hospitals, schools, or communities). While covariate pre-specification can improve power for estimating regression-adjusted average treatment effects (ATEs), further precision gains can be achieved through covariate selection once primary outcomes have been collected. This article uses design-based methods underlying clustered RCTs to develop Lasso methods for the post-hoc selection of covariates for (...) ATE estimation that avoids a lack of transparency and model overfitting. Our focus is on two-stage estimators: in the first stage, Lasso estimation is conducted using data on cluster-level averages or sums, and in the second stage, standard ATE estimators are adjusted for covariates using the first-stage Lasso results. We discuss l 1 {l}_{1} consistency of the estimated Lasso coefficients, asymptotic normality of the ATE estimators, and design-based variance estimation. The nonparametric approach applies to continuous, binary, and discrete outcomes. We present simulation results and demonstrate the method using data from a federally funded clustered RCT testing the effects of school-based programs promoting behavioral health. (shrink)

Computational modeling plays an important role in prediction and optimization of real systems and processes. Models usually have some parameters which should be set up to the proper value. Therefore, parameter estimation is known as an important part of the modeling and system identification. It usually refers to the process of using sampled data to estimate the optimum values of parameters. The accuracy of model can be increased by adjusting its parameters to the optimum value which need a richer (...) dataset. One simple solution for having a richer dataset is increasing the amount of data, but that can be costly and time consuming. When using data from animals or people, it is especially important to have a proper plan. There are several available methods for parameter estimation in dynamical systems; however there are some basic differences in chaotic systems due to their sensitivity to initial condition. Accordingly, in this paper, a new cost function which is proper for chaotic systems is applied to the chaotic one-dimensional map. Then the efficiency of a newly introduced intelligent method experimental design in extracting proper data is investigated. The results show the success of the proposed method. (shrink)

In this paper I examine the relation between Social Cost of Carbon (SCC) estimates, abatement cost analyses, and individual climate duties. I first highlight the stakes that SCC and abatement cost estimates potentially have for the content of individual duties to either pay the full or fair cost of their carbon emissions, or offset the volume of their emissions. I survey four methodological options (a minimalist approach, a precautionary approach, an averaging approach, and what I call (...) a ‘sufficiency-bounded’ precautionary approach) for conceptualizing the terrain of individual duties in light of SCC and abatement cost estimates that are both contentious and evolving. (shrink)

The purpose of the research is to study the feasibility of using the combined modeling method in evaluation of business value. Modern approaches and methods of evaluating business value and the possibilities of combining them are explored. The peculiarities of the methodology of evaluating the business value by methods of Gordon Growth Model and Exit Multiple are disclosed. During the research the fair value of Luxoft company and the reasons for its deviation from the cost of sale are found. (...) Luxoft’s business value forecast is calculated by 2023. Recommendations for further development of the field of knowledge of modern business analyst are given. (shrink)

A new method for evaluating aircraft engine monitoring data is proposed. Commonly, prognostics and health management systems use knowledge of the degradation processes of certain engine components together with professional expert opinion to predict the Remaining Useful Life (RUL). New data-driven approaches have emerged to provide accurate diagnostics without relying on such costly processes. However, most of them lack an explanatory component to understand model learning and/or the nature of the data. A solution based on a novel recurrent version of (...) a VAE is proposed in this paper to overcome this gap. The latent space learned by the model, trained with data from sensors placed in different parts of these engines, is exploited to build a self-explanatory map that can visually evaluate the rate of deterioration of the engines. Besides, a simple regressor model is built on top of the learned features of the encoder in order to numerically predict the RUL. As a result, remarkable prognostic accuracy is achieved, outperforming most of the novel and state-of-the-art approaches on the available modular aero-propulsion system simulation data (C-MAPSS dataset) from NASA. In addition, a practical real-world application is included for Turbofan engine data. This study shows that the proposed prognostic and explainable framework presents a promising new approach. (shrink)

This paper conducts a cost–benefit analysis of Australia’s Covid-19 lockdown strategy relative to pursuit of a mitigation strategy in March 2020. The estimated additional deaths from a mitigation strategy are 11,500 to 40,000, implying a Cost per Quality Adjusted Life Year saved by locking down of at least 11 times the generally employed figure of $100,000 for health interventions in Australia. The lockdowns do not then seem to have been justified by reference to the standard benchmark. Consideration of (...) the information available to the Australian government in March 2020 yields a similar ratio and therefore the same conclusion that lockdown was not warranted. If Australia experiences a new outbreak, and cannot contain it without resort to a nationwide lockdown, the death toll from adopting a mitigation strategy at this point would be even less than had it done so in March 2020, due to the vaccination campaign, lessons learned since March 2020, and because the period over which the virus would then inflict casualties would now be much less than the period from March 2020. This would favour a mitigation policy even more strongly than in March 2020. This approach of assessing the savings in quality adjusted life years and comparing them to a standard benchmark figure ensures that all quality adjusted life years saved by various health interventions are treated equally, which accords with the ethical principle of equity across people. (shrink)

Purpose of review: What is the relationship between rationality and mental health? By considering the psychological literature on depressive realism and unrealistic optimism it was hypothesized that, in the context of judgments about the self, accurate cognitions are psychologically maladaptive and inaccurate cognitions are psychologically adaptive. Recent studies recommend being cautious in drawing any general conclusion about style of thinking and mental health. Recent findings: Recent investigations suggest that people with depressive symptoms are more accurate than controls in tasks involving (...) time perception and estimates of personal circumstances, but not in other tasks. Unrealistic optimism remains a robust phenomenon across a variety of tasks and domains, and researchers are starting to explore its neural bases. However, the challenge is to determine to what extent and in what way unrealistic optimism is beneficial. Summary: We should revisit the hypothesis that optimistic cognitions are psychologically adaptive, whereas realistic thinking is not. Realistic beliefs and expectations can be conducive to wellbeing and good functioning, and wildly optimistic cognitions have considerable psychological costs. (shrink)

Greenhouse-gas emissions are indirectly causing future deaths by multiple mechanisms. For example, reduced food and water supplies will exacerbate hunger, disease, violence, and migration. How will anthropogenic global warming (AGW) affect global mortality due to poverty around and beyond 2100? Roughly, how much burned fossil carbon corresponds to one future death? What are the psychological, medical, political, and economic implications? Predicted death tolls are crucial for policy formulation, but uncertainty increases with temporal distance from the present and estimates may be (...) biased. Order-of-magnitude estimates should refer to literature from diverse relevant disciplines. The carbon budget for 2°C AGW (roughly 10 12 tonnes carbon) will indirectly cause roughly 10 9 future premature deaths (10% of projected maximum global population), spread over one to two centuries. This zeroth-order prediction is relative and in addition to existing preventable death rates. It lies between likely best- and worst-case scenarios of roughly 3 × 10 8 and 3 × 10 9, corresponding to plus/minus one standard deviation on a logarithmic scale in a Gaussian probability distribution. It implies that one future premature death is caused every time roughly 1,000 (300–3,000) tonnes of carbon are burned. Therefore, any fossil-fuel project that burns millions of tons of carbon is probably indirectly killing thousands of future people. The prediction may be considered valid, accounting for multiple indirect links between AGW and death rates in a top-down approach, but unreliable due to the uncertainty of climate change feedback and interactions between physical, biological, social, and political climate impacts (e.g., ecological cascade effects and co-extinction). Given universal agreement on the value of human lives, a death toll of this unprecedented magnitude must be avoided at all costs. As a clear political message, the “1,000-tonne rule” can be used to defend human rights, especially in developing countries, and to clarify that climate change is primarily a human rights issue. (shrink)

AimTo examine the relative cost-effectiveness of predictive genetic tests for familial breast and ovarian cancer provided by Genetic Services of Western Australia.MethodsThe relative cost-effectiveness was assessed using a decision analytic model.ResultsThe cost and outcomes of genetic testing was compared in first-degree relatives of known BRCA1/2 mutation-carriers who have a 50% risk of carrying the mutated gene (intervention group) to individuals with the same a priori risk but who do not undergo a genetic test (control subjects).Since genetic testing (...) enables the restriction of intensive surveillance to individuals with an identified BRCA1/2 gene mutation, net savings in the period observed (age 25-70) were $980-$1008 per woman in the ovarian intervention group and $1681-$1795 per woman in the breast intervention group, and delayed the onset of breast cancer (6mths BRCA1, 3mths BRCA2).Compared to control subjects undergoing population surveillance, it was estimated the onset of breast cancer could be delayed at a total net cost of $3055 (5.1yrs) to $3389 (3.2yrs) for women in the breast intervention group with BRCA1/2 mutations. Since population surveillance is not currently recommended for ovarian cancer, control subjects undergoing no surveillance were compared with the intervention group. The onset of ovarian cancer was delayed at a net cost of $1630 (3.5yrs) to $2509 (1.2years) for women with BRCA1/2 mutations.ConclusionsTesting allows targeted high-level surveillance for gene mutation carriers, which ensures the cost-effective use of resources and reduces cancer-related morbidity if clinical recommendations for intervention are adopted. (shrink)

This article presents estimates of the global cost of collective and interpersonal violence for the period of one year. This includes war, terrorism, homicides, assaults and domestic violence against women and children. The cost of conventionally defined interpersonal violence, that is, homicides and assault, are about 7.5 times higher than the cost due to war and terrorism. I also estimate the costs of non-fatal domestic violence against children and women and suggest that these costs are much (...) higher than the combined costs of homicide, assault, terrorism and war. The main reason is that the prevalence of these types of violence is very high: possibly as many as 16 per cent of all children are punished using violent methods and about 12 per cent of all women experience intimate partner violence. Richer societies have lower levels of violence, and there is evidence that prevalence rates have been declining over time. However, it is often unclear why this is the case. Much of the evidence from violence red... (shrink)

Background: Omalizumab, an anti-immunoglobulin E antibody, reduces exacerbations and symptoms in uncontrolled allergic asthma. The study objective was to estimate the costs and consequences of omalizumab compared to usual care from a US payer perspective. Methods: We estimated payer costs, quality-adjusted survival (QALYs), and the incremental cost-effectiveness ratio (ICER) of omalizumab compared to usual care using a state-transition simulation model that included sensitivity analyses. Every 2 weeks, patients could transition between chronic asthma and exacerbation health states. The best (...) available evidence informed the clinical and cost input estimates. Five years of omalizumab treatment followed by usual care was assumed to estimate a lifetime horizon. Omalizumab responders (60.5% of treated) were modeled as a separate scenario where nonresponders reverted back to usual care after 16 weeks of active treatment. Results: The mean lifetime discounted costs and QALYs were $83 400 and 13.87 for usual care and $174 500 and 14.19 for omalizumab plus usual care resulting in $287 200/QALY (95% interval: $219 300, $557 900). The ICER was $172 300/QALY when comparing omalizumab to usual care in the responder scenario. One-way sensitivity analyses indicated that the results were sensitive to the difference in treatment-specific utilities for the chronic state, exacerbation-associated mortality, omalizumab price, exacerbation rates, and response definition. Conclusions: The results suggest that adding omalizumab to usual care improves QALYs at an increase in direct medical costs. The cost-effectiveness of omalizumab is similar to other chronic disease biologics. The value increases when omalizumab response is used to guide long-term treatment. (shrink)

The new Hungarian Labour Code allows informal payments to be accepted, subject only to the prior permission of the employer. In Hungary, the area most affected is Health Care, where informal payments to medical staff are common. The article assesses the practice on ethical terms, focusing on organisational justice. It includes an analysis of distributional injustice, that is, of non-equitable payments to professionals, on the distribution of payments depending on the specialisation and status of the doctor, on his or her (...) rights to allocate Health Care resources and/or on how assertive he or she is. We show, by means of a content analysis of internet postings and of interviews with physicians, the feelings and attitudes of both patients and doctors—thus enabling us to trace interactional and procedural injustice and portray the main driving forces of informal payment with causal loops. We use a new approach (a system dynamics computer simulation) to demonstrate how informal payments influence therapy procedures. The example of treating the common skin disease of psoriasis examines the specific behaviour of doctors in their everyday practice and estimates the extent to which the prescription of unnecessary or more expensive therapy increases the costs. With this multi-method approach, we demonstrate that the legislation allowing informal payment represents bad ethics, since it enforces organisational injustice, creates mistrust between physicians and patients, decreases performance and increases the total costs paid both by society and the Health Insurance Fund. Informal payments distort the allocation of resources, enforce discrimination based solely on money, violate the concept of solidarity and limit Human Rights in terms of health. (shrink)

The Patient Self-Determination Act (PSDA) requires hospitals to ask patients upon admission whether they have an advance directive. Although the PSDA has received extensive criticism, little attention has been paid to the cost of the law, either during its legislative course or following its implementation. Nonetheless, several tangible and intangible costs are associated with the PSDA. Such costs may be incurred by different parties. This paper examines the costs and benefits of the PSDA and illustrates the extent of some (...) of its tangible costs. The incremental start-up cost for one institution's response to the PSDA is estimated to be $49,304 ($1.31 per admission) and the total implementation cost of the program to be $114,528. In addition, the national incremental start-up cost for hospitals to implement the PSDA is estimated to be between $43,625,114 and $101,569,922. Finally, the potential implications of the PSDA for future governmental health care ethics regulation are discussed. (shrink)

Risk is the probability that within a certain time some expected negative event will take place. In medicine risk can be related to a decision or to some intrinsic factors which are associated with the probability of the occurrence of a disease. Decisions can be necessary in the individual life with respect to the question of visiting a physician or performing a certain diagnostic or therapeutic procedure. The introduction of new pharmaceutical or technical products into medical use are another set (...) of decisions which can generate certain risks. Intrinsic or inherent risk factors are a set of variables or signs and symptoms which indicate the presence of a certain probability that some disease or event, e.g., arteriosclerosis or sudden infant death syndrome, may occur. Risk is always related to judgement. In a decision process cost, effectiveness and profit can be used to estimate the magnitude of the risk to be taken. In a similar way the problems in connection with an inherent risk are primarily related to the recognition of the magnitude of risk and to the possibility of prophylactic measures.In our own area of research, the sudden infant death syndrome (SIDS) is an event where only risk factors can be observed. We point at two facts in this context: Highly complex patterns of symptoms like behaviour can better be classified by intuitive Gestalt perception. A medical procedure like induction of labour can itself become a risk factor. (shrink)

Rehabilitation for disabled children requires long-term programmeswhich are expensive to the family. This study aimed to estimate the costincurred by caregivers’ children with disabilities from Pahang, Terengganu andKelantan participating in Community-Based Rehabilitation and cost of seeking alternative rehabilitation. Costanalysis using the Activity-Based Costing method was used to estimatetwelve-months’ expenditure in 2014 institutional year on 297 caregivers ofchildren with disability, aged 0 to 18 years who attended CBR. Data werecollected using a self-administered costing questionnaire and presentedin median. Results showed (...) that the median direct and indirect costs,excluding medications and alternative care were nearly four times as highin Home-Based compared to Centre-Based vs. RM608. Both groups of caregivers spent a significant amount ofresources on alternative rehabilitation. The high costs incurred for alternativerehabilitation is a major economic burden to the family. (shrink)

At first glance, it may seem that climate policy based on estimates of the social cost of carbon (SCC) presupposes a set of controversial assumptions, especially about what detailed knowledge regulators have about the impacts of climate change, and what the proper role of government and policy is in responding to those impacts. However, I explain why the SCC-based approach need not actually have these problematic presuppositions as well as why SCC estimates may provide the best guide to climate (...) policy when implemented in a way that incorporates a healthy dose of humility. The SCC-based approach can be used in a way that is ecumenical between the wide range of reasonable but incompatible views about the proper goals of government and policy, ranging from views that aim only at market-efficiency, to utilitarian views, to rights-based and other deontological views, to libertarian views, to virtue ethics views, and others. Beyond this, I suggest that the SCC-based approach can help us find an overlapping consensus on a particular climate policy given the range of reasonable but incompatible normative views endorsed in diverse societies. Finally, I consider a number of specific objections to the SCC-based approach that are especially prominent in contemporary discourse and policy debates. I suggest that even if we agree that all of these objections to existing SCC-based analyses have an important kernel of truth, nonetheless the correct response to climate change still involves substantial emissions reductions to be achieved via policy, and the best methods for deciding the magnitude of those reductions still depend essentially on the SCC-based approach. (shrink)

Conflicts have arisen between communities and operators of confined animal feeding as farms have become bigger in order to maintain their competitiveness. These conflicts have been difficult to resolve because measuring and allocating the benefits and costs of livestock production is difficult. This papers demonstrates a policy tool for promoting compromise whereby the community gets reduced negative impacts from livestock while at the same time continues to benefit from livestock jobs, taxes, and related economic activity. Public economic benefits and public (...) economic costs of confined animal feeding operations are estimated for every farm and affected house in Craven County, North Carolina. The results show public economic benefits of $5.7 million and public economic costs of $2.2 million, but that the ratio of benefits to costs for individual farm-house pairs varies in important ways across the 26 hog farms in Craven County. (shrink)

The information on extra costs of disability among developingcountries, including Malaysia, is lacking and the issue seems neglected. As aresult, an appropriate amount of monetary assistance that should be providedto the disabled community in Malaysia could not be determined. This paperundertakes a preliminary analysis of the extra costs of having a disability,by taking the staff of International Islamic University Malaysia asthe sample as to calculate the extra costs of having a disability. The standardof living approach is adopted, and the extra (...) costs are calculated by dividingthe estimated coefficient of disability variables by the estimated coefficientof income. This paper analyses the extra costs among households containingone person with disabilities, and also across different severity levels, types ofdisability, according to gender, and residential area. Overall,a household containing one person with disabilities accounted 27.5 per cent outof their monthly income to fulfil disability-related needs. (shrink)

This article analyses the cost of motherhood borne by Polish women. The cost of motherhood is defined as a drop in earnings caused by the presence of children. The findings show that motherhood in Poland is associated with a drop in women’s net monthly earnings of around 13–19%. The results also show that the cost of motherhood varies with the number of children and the drop in wages is particularly high for mothers of three or more children. (...) The investigation of mother’s self-selection into employment suggests that the estimated cost would be higher if the choice could be accounted for. (shrink)

This study aimed to estimate the indirect expenses borne by tenant farmers due to credits they receive in community salt farming operations managed through contract farming systems in Pamekasan Regency. Credits constitute a crucial aspect of tenant farmers’ rights within the community salt farming contract farming framework. This study employed a comparative analysis of the cost of funds based on the adopted contract farming models, specifically the two-way and three-way contract farming structures. Moreover, it investigated the correlation between (...) the cultivated salt field’s size and the magnitude of the cost of funds endured by tenant farmers. The results of the analysis reveal that the average costs of funds borne by tenant farmers are notably high, ranging from 5.24% to 6.71% per month. Surprisingly, these figures exceed the loan interest rates offered by two formal financial institutions: BRI and Bank JATIM. Another significant finding is the positive correlation between the size of cultivated salt fields and the magnitude of the cost of funds borne by tenant farmers. Lastly, there is a clear positive relationship between the credit amount received and the corresponding cost of funds endured by tenant farmers. The substantial costs of funds shouldered by tenant farmers involved in the community salt farming, operated through contract farming systems in Pamekasan Regency, signify inefficiencies within the contract farming structure. It is expected that the government can aid these tenant farmers by disbursing subsidized credits through collaborations with relevant ministries and local formal financial institutions. (shrink)

In this paper I present a case study of mathematical explanation in science that is new to the philosophical literature, and that arises in the context of estimating the energetic costs of running in bipedal animals. I refer to this as the Bipedal Gait Costs explanation. I argue that it is important for examples of applied mathematics to be driven not just by philosophical and mathematical concerns but also by scientific concerns. After a detailed presentation of the BGC case study, (...) I discuss ways in which it is different from standard examples of MES. One distinctive aspect of BGC is that substantive mathematics occurs at two different levels. I argue for a distinction to be drawn between the mathematical modeling that occurs at one level, which is non-explanatory, and the mathematical theorem which is applied to results gleaned from these models, which is explanatory. I conclude by drawing some connections with broader indispensability-based arguments for platonism in the philosophy of mathematics. (shrink)

Estimation and evaluation of individualized treatment rules have been studied extensively, but real-world treatment resource constraints have received limited attention in existing methods. We investigate a setting in which treatment is intervened upon based on covariates to optimize the mean counterfactual outcome under treatment cost constraints when the treatment cost is random. In a particularly interesting special case, an instrumental variable corresponding to encouragement to treatment is intervened upon with constraints on the proportion receiving treatment. For such settings, (...) we first develop a method to estimate optimal individualized treatment rules. We further construct an asymptotically efficient plug-in estimator of the corresponding average treatment effect relative to a given reference rule. (shrink)

Over the last decade, the news media have reported on corporate scandals involving high-profile organizations such as Arthur Anderson, AOL Time Warner,Enron, Halliburton, Kmart, and Xerox. In 2001, the Conference Board of Canada noted that supplier relationships represent some of the most common ethical problems in the private sector, and estimated that 95% of corporations in the United States and 86% of corporations in Canada have implemented ethical codes of conduct and are espousing their commitment to building relationship with ethical (...) suppliers. While a significant amount of research on corporate ethics has been published (for examples see Akaah and Riordan 1989; Cullen et al. 2003; Román and Ruiz 2005; Schminke et al. 2005; and Weaver et al. 1999a, 1999b), what still remains unknown is how and when a supplier’s ethical code of conduct matters to the buyer making decisions regarding their choice of suppliers. (shrink)

The distinction between access consciousness and phenomenal consciousness is a subject of intensive debate. According to one view, visual experience overflows the capacity of the attentional and working memory system: We see more than we can report. According to the opposed view, this perceived richness is an illusion—we are aware only of information that we can subsequently report. This debate remains unresolved because of the inevitable reliance on report, which is limited in capacity. To bypass this limitation, this study utilized (...) color diversity—a unique summary statistic—which is sensitive to detailed visual information. Participants were shown a Sperling-like array of colored letters, one row of which was precued. After reporting a letter from the cued row, participants estimated the color diversity of the noncued rows. Results showed that people could estimate the color diversity of the noncued array without a cost to letter report, which suggests that color diversity is registered automatically, outside focal attention, and without consuming additional working memory resources. (shrink)

This article reassesses the quality and character of Carthaginian strategy during the First Punic War. It uses the ship count figures contained in Polybius' account, combined with comparative evidence from the Athenian navy to estimate the relative cost of naval operations for both Carthage and Rome. It shows that, contrary to prevailing scholarly opinion, Carthage's naval effort was no less extensive than Rome's. In conclusion, it seeks to explain Carthaginian strategy as a result of limitations imposed by (...) class='Hi'>cost and geography. Consequently, the critical scholarly consensus rendered against Carthaginian strategy in this war is to be revised. (shrink)

The all too common sunk cost effect is apparent when an investor influenced by what has been spent already persists in a venture, committing further resources or foregoing more profitable opportunities, when the economically rational action is to quit. Less common but arguably just as much a sunk cost effect is the mistake of giving up on a failed or failing venture too readily, sometimes out of nothing but pique at what has been lost, or perhaps through the (...) more subtle psychological forces posited by Kahneman, Tversky, Thaler and others within prospect theory and related work on ``mental budgeting''. Two case examples are considered, wherein decision makers dissatisfied with the results of their investments, and having lost money, appear to compound their losses by selling out at prices less than their own estimates of the remaining financial worth of the failed assets. These decisions are evaluated from the perspectives of both behavioral and prescriptive economics, and are found to have possible explanations in both. Their prescriptive rationale assumes a portfolio theory of investment decisions, and is demonstrated within both expected utility (economics) and mean-variance (finance) frameworks. (shrink)