We solve an extremal problem that arises in the study of the refractive indices of passive metamaterials. The problem concerns Hermitian functions in H of the upper half-plane, i.e., H functions satisfying f(−x) = f(x). An additional requirement is that the imaginary part of f be nonnegative for nonnegative arguments. We parameterize the class of such functions whose real part is constant on an...

W are the drivers of retailer pricing tactics over time? Based on multivariate time-series analysis of two rich data sets, we quantify the relative importance of competitive retailer prices, pricing history, brand demand, wholesale prices, and retailer category-management considerations as drivers of retail prices. Interestingly, competitive retailer prices account for less than 10% of the over...

Memperhatikan kondisi alam dan perkembangan era yang tidak signifikan perubahannya berdampak pada aktivitas siswa. Begitu juga dampak pandemi covid-19 masih dirasakan oleh sebagian besar siswa mengikuti distance learning. Permasalahan muncul adalah banyaknya gangguan dihadapi para di luar jadwal sekolah sehingga membutuhkan self-management baik. Tujuan pengabdian kepada masyarakat ini untuk dap...

nowadays project management is a key component in introductory operations management. the educators and the researchers in these areas advocate representing a project as a network and applying the solution approaches for network models to them to assist project managers to monitor their completion. in this paper, we evaluated project’s completion time utilizing the q-learning algorithm. so the ...

From around the world we have had evidence that the ‘‘guideline-driven’’ attainment of good asthma control is not being achieved. Surveys over the past decade have provided the evidence and concluded that ‘‘physicians and patients should raise their expectations of the level of asthma control that can be achieved’’, and ‘‘the critical need for improved asthma care, including a more global evalu...

D istributed mission-critical environments employ a mixture of hard and soft real-time applications that usually expect a guaranteed range of quality of service. These applications have different levels of criticality and varied structures ranging from periodic independent tasks to distributed pipelines or event-driven modules. The underlying distributed system must evolve and adapt to the high...

Management of workflow processes is more than just enactment of process activities according to business rules. Time management functionality should be provided to control the lifecycle of processes. Time management should address planning of workflow executions in time, provide various estimates about activity execution durations, avoid violations of deadlines assigned to activities and the en...