BACKGROUND The Pittsburgh Sleep Quality Index (PSQI) and the Epworth Sleepiness Scale (ESS) are commonly used to quantify sleep and excessive daytime sleepiness in older adults. These measures, however, have not been comprehensively evaluated for their psychometrics in older men. We determined the internal consistency reliability and construct validity of the PSQI and ESS in a sample of older m...

The aim of this paper is to compare the operational pattern of an energy storage system (ESS) in a vertically-integrated utility and in a deregulated market environment for different levels of wind integration. As the main feature of a vertically-integrated utility is a centralized decision-making process, all of the investment and operating decisions are made with a single goal of minimizing t...

BACKGROUND The orbital complications account for about 80% of all complications secondary to acute rhinosinusitis. If the treatment is not correct and in time, orbital complications could progress rapidly, leading to optic neuritis, cavernous sinus thrombophlebitis or life-threatening intracranial complications. AIMS To evaluate the therapeutic efficacy of conservative therapy for the patient...

Meeting the world's growing energy demand through bioenergy production involves extensive land-use change which could have severe environmental and social impacts. Second generation bioenergy feedstocks offer a possible solution to this problem. They have the potential to reduce land-use conflicts between food and bioenergy production as they can be grown on low quality land not suitable for fo...

11 As a recently increasing trend among different applications of smart grid vision, smart households as a new implementation area of demand 12 response (DR) strategies have drawn more attention both in research and in engineering practice. On the other hand, optimum sizing of 13 renewable energy based small scale hybrid systems is also a topic that is widely covered by the existing literature....

OBJECTIVE To compare psychophysiological responses among novice surgeons during performance of endoscopic sinus surgery (ESS). DESIGN Randomized study. SETTING Academic institution. PARTICIPANTS Fifteen novice surgeons. MAIN OUTCOME MEASURES The psychophysiological effects of performing ESS were assessed among 15 novice surgeons at 30 minutes before (T - 30), at the beginning of (T0), a...

Vendors of Enterprise systems software (ESS) offer a portfolio of software components to support a variety of specific business functions. Client organizations construct a digital platform for their business processes by buying software components from one or more ESS firms and expect the components to be compatible with each other. Each software component (e.g., ERP, CRM, analytics) forms a ma...


 Obituary: Josef van Ess (1934–2021)

BACKGROUND Patients with chronic rhinosinusitis (CRS) often have to endure significant wait times for endoscopic sinus surgery (ESS). The pyschiatric impact of placement on a waitlist for ESS has not been explored. METHODS Questionnaires measuring CRS symptom severity and health-related anxiety and stress (SNOT-22, HADS, WPAI-GH) were sent to patients diagnosed with CRS and currently on a wai...