Search results for "PreP"

Fast 3D Ray Tracing for Indoor Coverage Solutions

2016

Optimal wireless indoor network planning requires huge number of iterations and evaluations of indoor coverage for each antenna location until an optimal solution is reached. Consequently, accurate and scalable calculation of power strength for indoor scenarios becomes necessary. The contribution in this paper is to reduce the complexity of 3D ray tracing for deterministic indoor power prediction. In order to achieve that while preserving the accuracy, image theory with feasible reflection volume as preprocessing approach is introduced. This proposed algorithm stores the image, its feasible reflection volume and valid area of receiving points. Significant complexity reduction is achieved by…

Prepulse Inhibition and Vulnerability to Cocaine Addiction

2021

Remote Sensing Geometric Corrections

2016

This article reviews the different aspects of geometrical processing of remote sensing data, discussing error sources and methods to determine the transformation from the image acquisition geometry to the output cartographic product. Resampling methods are discussed to transform the input image to the output geometry. Several practical examples of remote sensing platforms are discussed, including satellite cases and airborne sensors. Validation of the resulting geometrical processed products is also discussed. Spatial mosaicking techniques and multitemporal composites used to produce multisource integrated products and advanced applications are finally considered, keeping a perspective on t…

Significant others’ experience of hospitalized patients’ transfer to home:a systematic review protocol

2014

Review question/objective The objective of this review is to identify, appraise and synthesize the best available evidence exploring significant others’ experiences of the discharge/transfer of patients after hospitalization. More specifically, the review questions are: What is the significant other(s) experience of hospital/discharge transfer of patients; in particular, experiences relating to transitions concerning organizational, psychosocial and existential issues? How do significant others experience their preparedness for bringing the patient(s) home? How do significant others experience the planning of discharge? Inclusion criteria Types of participants The participants of this revie…

Computer-assisted preparation in conference interpreting

2017

Preparation has been proposed in the literature as one of the most important phases of an interpreting assignment, especially if the subject is highly specialised. Preparing an assignment in advance aims at bridging the linguistic and extra-linguistic gap between conference participants and interpreters and at reducing the cognitive load during interpretation. For these reasons it is considered crucial in ensuring higher interpreting quality. Yet, preparation is generally time-consuming and interpreters may often experience the feeling of not knowing exactly how to perform this task efficiently. Information technology could change this. Even though the first computer-assisted interpreting s…

Effectiveness of a web-based acceptance and commitment therapy program for adolescent career preparation : A randomized controlled trial

2021

Acceptance and commitment therapy (ACT) programs have rarely been used as tools for promoting adolescents' career preparation. This randomized controlled trial examined the possibility to promote the career preparation of Finnish ninth-grade adolescents (n = 249, 49% females) with a web-based five-week ACT-based online intervention program. Participants were randomly assigned to three conditions, of which two groups received an iACT including support via SMS (iACTface: iACT+two face-to-face sessions; only iACT: iACT with no face-to-face sessions) and the third (control) group received no treatment. The results showed that career-related insecurity decreased as a result of the intervention i…

Variación y fijeza en la fraseología castellana medieval. Locuciones prepositivas complejas en la prosa sapiencial castellana (Siglos XIII-XV)

2015

Como resultado del notable auge que en los últimos años está experimentando la Fraseología histórica, esta tesis estudia el origen y la consolidación de aquellas locuciones castellanas que por resultar hoy demasiado abstrusas no favorecen su incorporación a la sintaxis. Para distinguir los usos locucionales prepositivos del castellano medieval del repertorio de locuciones prepositivas plenamente consolidadas en la fraseología del español actual, hemos designado a las primeras como Formas locucionales prepositivas (FLP), pues aun no habiendo sobrevivido muchas de ellas hasta la actualidad, manifiestan en su génesis y desarrollo histórico cierta potencialidad locucional, en el sentido de que …

Stability and marginal bone loss in implants placed using piezoelectric osteotomy versus conventional drilling: systematic review and meta-analysis.

2021

Background The main objective of this systematic review was to compare primary and secondary implant stability between placement with piezoelectric osteotomy and conventional drilling, comparing marginal bone losses as a secondary objective. Material and Methods An electronic search was conducted using PubMed (MEDLINE), Scopus, and Cochrane Library (Wiley) databases, besides a manual search. Results A total of 153 articles were retrieved, 39 from Pubmed, 44 from Scopus, and 70 from the Cochrane Library. After removing duplicates, 112 articles (1 from the manual search) were screened, and 9 were finally selected for qualitative and statistical analyses. Conclusions Piezoelectric surgery is a…

Introduction to MIP synthesis, characteristics and analytical application

2019

Abstract One of the trends in analytical chemistry is associated with designing and developing new types of sample preparation techniques, which might significantly increase the efficiency and selectivity of the analytes isolation or/and preconcentration process. One of the most widely employed solutions is selective sorption materials, defined as molecularly imprinted polymers (MIPs), as well as the sorbents with the molecular fingerprint. Due to their simple preparation protocol, mechanical, thermal and chemical stability and selectivity, MIPs have found application as a stationary phase in separation techniques such as liquid chromatography or capillary electrophoresis, in electrochemica…

Two-step polymerization of propylene over MgCl2-supported titanium catalyst

1998

The prepolymerization effect on propylene polymerization in the presence of a MgCl 2 -supported titanium catalyst was studied. The catalyst was pre-activated by polymerizing a small amount of propylene in the presence of Et 3 Al and cyclohexylmethyldimethoxysilane under mild conditions, and then it was used in a second step of propylene polymerization. Comparative studies of the polymerization process involving the investigated catalyst and its unmodified counterpart showed the rate-enhancement effect of prepolymerization and the same molecular weights, MWD's and isotacticities of the polymers obtained. Concentrations of active sites and propagation rate as well as transfer rate constants w…