Reconfigurable intelligent surface (RIS)-assisted transmission and space shift keying (SSK) appear as promising candidates for future energy-efficient wireless systems. In this article, two RIS-based SSK schemes are proposed to efficiently improve the error throughput performance of conventional systems, respectively. The first one, termed RIS-SSK with passive beamforming (RIS-SSK-PB), employs ...

Karkheh Dam is the largest dam in Iran with a capacity of about 7.4×109 cubic meters and height of 127 meters. Since the first impoundment, increasing in seismic activity in the dam area has been observed that indicates the possible occurrence of reservoir-induced seismicity (RIS).In the present work, a preliminary evaluation is conducted firstly in order to investigate these observations. Base...

INTRODUCTION Few studies focused on predictors of unfavorable outcomes (modified Rankin Scale, 2-6) after reconstructive treatment of the ruptured intracranial spontaneous vertebral artery dissection aneurysms (ris-VADAs), which was evaluated based on 57 reconstructed lesions in this study. METHODS Results of 57 consecutive patients (M:F = 29∶28; median age, 48 years; range, 27 to 69 years) h...

RIS Review of Information Science, a full refereed electronic journal, has been published at the Department of Information Science, University of Konstanz, Germany since July 1996. This text firstly gives a brief introduction to RIS and then reports the main results of a study on the users’ behaviour when using RIS followed by a discussion on these results. The study is based on an analysis of ...

An improved interfacial drug delivery system (DDS) based on polyelectrolyte complex (PEC) coatings with controlled drug loading and improved release performance was elaborated. The cationic homopolypeptide poly(l-lysine) (PLL) was complexed with a mixture of two cellulose sulfates (CS) of low and high degree of substitution, so that the CS and PLL solution have around equal molar charged units....

BACKGROUND Antipsychotic-induced weight gain occurs in a substantial percentage of treated persons. There remains a paucity of naturalistic data that describe relative weight-gain liability with the available novel atypical antipsychotics (NAPs). This investigation describes comparative NAP-induced weight gain in a prospective naturalistic cohort of persons with schizophrenia and related psycho...

The random Incentive System (RIS) is a standard method to incentivize participants in economic experiments. However, recent theoretical studies point out the possibility of its failure under ambiguity. We propose modification RIS, named independent RIS (I-RIS), improve reliability. conducted an experiment evaluate performances and I-RIS direct indirect manners. Whereas nonnegligible fraction ar...

Recently, reconfigurable intelligent surfaces (RIS) have attracted a lot of attention due to their capability extending cell coverage by reflecting signals toward the receiver. In this letter, we analyze downlink RIS-assisted network with one base station (BS) and user equipment (UE). Since RIS orientation horizontal distance between BS significant influence on coverage, formulate an placement ...

PURPOSE The in-stent signal reduction of the stented artery caused by susceptibility artifact or radiofrequency shielding artifact limited the use of time-of-flight MR angiography (TOF-MRA) as a follow-up tool after intracranial stenting. We showed the degree of an artifact according to different stent types, and optimized MR parameters for TOF-MRA in patients with intracranial stent on 3.0 T M...