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Most control systems involve the execution of periodic activities, which are automatically activated by the operating system at the specified rates. When the application consists of many concurrent tasks, each control activity may experience delay and jitter, which depend on several factors, including the scheduling algorithm running in the kernel, the overall workload, the task parameters, and th
This paper develops a very simple test for the null hypothesis of no cointegration in panel data. The test is general enough to allow for heteroskedastic and serially correlated errors, unit-specific time trends, cross-sectional dependence and unknown structural breaks in both the intercept and slope of the cointegrated regression, which may be located at different dates for different units. The l
The major seminal vesicle secreted proteins in human semen, semenogelin I and semenogelin II, interact non-covalently and via disulphide bridges to instantly form a coagulum upon ejaculation. The coagulum is liquefied after a few minutes due to the action of a prostatic serine protease, prostate-specific antigen (PSA). In contrast to rat semen, which forms an insoluble plug within minutes of expul
In today's competitive society the difference between winning and disappearing might very well be dependent on who is first to release a new product or an update to an existing product to the market. The impact that this situation has on the design analysis department in a company is tremendous. It is a known fact, to everyone working with design analysis, that the demands on analyses from the pro
The mass media and popular science launch the idea that the generation that is retiring now, that is people born in the 1940s, is different from previous generations. The templates for ageing are no longer considered applicable. Pensioners are expected to make completely new and higher demands on life. They are presumed to be healthy, active and well-off. Österlen is often described as a place in
In Japan, used mobile phones are collected through several voluntary projects. In European countries, on the other hand, used mobile phones are handled together with other electronic waste in mandatory EPR systems and municipalities collect most of them as recyclable wastes. In this study, we focused on the role of producers and municipalities. We seek to conduct a comparative analysis of current
The end-to-end assignment of bandwidth to node-pairs (demands) in a communication network can be considered fair if it is distributed according to the max-min fair (MMF) principle. This paper investigates the problem of obtaining an MMF allocation if each demand is required to use exactly one path (i.e., to use unsplittable flows). First it is shown that the problem is NP-hard, both if each demand
