In article number 2110288, João Ventura and co-workers demonstrate a hybrid device that couples triboelectric and thermomagnetic effects to generate useful electrical energy in the presence of small temperature gradients near room temperature (from 15 to 37 ºC in the cold side and from 60 to 90 ºC in the hot side). The versatile prototype generates 35 times more power than a conventional thermomagnetic generator driven by magnetic induction, expanding the applicability of triboelectricity into the realm of room temperature thermal harvesting.
Budgets are important management tools recognized for their help in planning, communication, monitoring the expense performance, and even motivating collaborators. However, recently there has been criticism of the traditional Budgeting Process due to its cumbersomeness, long duration, and eventual diversion of the focus from the day-to-day activities. Thus, improving the Budgeting Process by incorporating Expense component uncertainties is of uttermost importance to accelerate its approval.
This paper presents a methodology for companies to assess their budget risk based on their historical Expense data by applying Monte Carlo Simulation and Time Series Bootstrapping Techniques. Besides, some state-of-the-art sensitivity Importance Measures are also implemented to help evaluate the relative importance of the Expense components. The methodology proposed, based on a real case study with data from a major Portuguese retailer, has the advantage of being objective and supported by data, thus not being subject to bias from the management.
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