Search results for "CHANNEL"
showing 10 items of 1643 documents
Estimation of the Time-Variant Velocity of a Single Walking Person in Two-Dimensional Non-Stationary Indoor Environments Using Radio-Frequency Techni…
2020
Accurate estimation of the time-variant (TV) velocity of moving persons/objects in indoor spaces is of crucial importance for numerous wireless indoor applications. This article introduces a novel iterative procedure to estimate the TV velocity, i.e., TV speed and TV angle-of-motion (AOM), of a single moving person in 2D indoor environments by using radio-frequency (RF) techniques. The indoor area is equipped with a distributed 2 × 2 multiple-input multiple-output (MIMO) system. The proposed method is divided into two parts. In the first part, we estimate the path gains and the instantaneous Doppler frequencies by fitting the exact spectrograms of the complex channel gains of a 2D no…
Configurational theory in traditional manufacturing industries: a new model of high-performing small and medium-sized enterprises
2020
The goal of this study is to provide a model of high-performing small and medium-sized companies to address the new environmental challenges in traditional manufacturing industries. Adopting a configurational logic and following an inductive approach based on four high-performing firms, this paper provides new empirical evidence on how the steps followed by these firms are adjusted to the high-performance models prescribed by the literature. In doing so, it also offers a dynamic view of the interrelationships between the strategy and the new conditions of the environment. At a practitioner level, the paper illustrates which recipes are more appropriate to prescribe recommendations for a mor…
Asymmetric effects of monetary policy shocks across US states
2019
This paper provides new empirical evidence of the asymmetric effects of monetary policy shocks across regions. Using a measure of unanticipated changes in the Fed's policy rates over the period 1969Q3–2008Q4 and a local projection method extended to account for spatial effects, we find that monetary policy tightening leads to a long-lasting decrease in states' real personal income, with asymmetric effects across states that are amplified by spatial spillovers. The paper then investigates the role played by several transmission channels finding larger contractionary effects of monetary policy tightening in states with higher manufacturing share, smaller firms, smaller banks and higher house …
A Novel Pathophysiological Mechanism Contributing to Trigeminal Neuralgia
2016
Trigeminal neuralgia (TN) is a form of neuropathic pain that affects the fifth cranial nerve, the most widely distributed nerve in the head. Although TN has been associated with a variety of pathological conditions, neurovascular compression on the trigeminal nerve, as it exits the brain stem, is the most frequent reported cause. This compression provides a progressive demyelination of the nerve and a subsequent aberrant neural transmission. Although several studies have clarified some physiopathological mechanisms underlying TN, the molecular basis remains vague. Very recently the substitution of methionine 136 by valine (MET126Val) in sodium channel Nav1.6 in a case study of typical TN ha…
Pyrrethroid resistance in Varroa destructor: Investigating the role of mutations in the voltage-gated sodium channel
2022
Entre les majors amenaces de l'apicultura contemporània es troba el parasitisme de Varroa destructor, Anderson & Trueman (Acari: Varroidae). Aquest àcar ectoparàsit altament especialitzat s'alimenta directament de les pupes i els adults de l'abella mel·lífera europea, Apis mellifera L. (Hymenoptera: Apidae), la qual cosa debilita greument a les abelles i les indueix una immunosupressió que desemboca en brots d'infeccions preexistents o vectorizades pels àcars que comprometen la viabilitat de les colònies. El control dels àcars V. destructor es un problema agreujat pel limitat número de tractaments de control disponibles i l'evolució de la resistència a aquests en les poblacions d'àcars. Enc…
Omnichannel experience: Towards successful channel integration in retail
2019
According to Deloitte’s (2018) forecast for 2018 many changes will occur in retail markets. The growth of online retailing is continuing, and it is going to have a great impact on traditional retail players. The number of physical stores will decrease, but they will still have important role in retailing. Customer experiences are now more important than ever, and digital technologies will have a key role to the store experience. Consumers are spending more and more time on smartphones relative to other devices. Typically, they conduct searches on mobile devices and make purchase in physical stores (Singh and Swait, 2017). Today, 8% of time spent online is related to shopping (Mander and Jas…
The Effects of General and Mobile Online Shopping Skilfulness and Multichannel Self-Efficacy on Consumer Showrooming Behaviour
2022
Although showrooming behaviour is a characteristic aspect of modern omnichannel retailing, our understanding of its antecedents remains limited. In this study, we aim to address this gap in prior research by examining how showrooming behaviour is affected by three different kinds of perceived consumer capabilities: general online shopping skilfulness, mobile online shopping skilfulness, and multichannel self-efficacy. The examination is done by utilising data from 1,024 Finnish consumers, which was collected with an online survey in 2021 and is analysed with structural equation modelling (SEM). In summary, we find mobile online shopping skilfulness to have a strong positive effect on showro…
A Customer Perspective on Omnichannel Customer Journey and Channel Usage : A Qualitative Study
2022
This qualitative study investigates customer behavior during the omnichannel customer journey. The study aims to increase the understanding of omnichannel service environments from a customer-centric point of view. The data was collected by interviewing 10 young adults (from 26 to 30 years old) who had bought a Finnish clothing brand (R-Collection) product via a digital or a physical channel. The research interviews dealt with the interviewees' experiences and channel behavior during their shopping journeys. Our results reflect the multidimensional nature of the omnichannel customer journey and give interesting insights into the usage of digital channels and technologies for clothing shoppi…
Reinforcement of brand relationships in an omnichannel environment: a qualitative study on clothing shopping
2022
Today’s brands operate in an omnichannel environment consisting of different online and offline channels where the brand can be experienced. This qualitative study investigates brand relationship reinforcement in the omnichannel environment among customers of a Finnish clothing brand, R-Collection. The data collection was conducted in 2021 by interviewing ten customers of R-Collection. We examined the brand relationship reinforcement in four channels: brick-and-mortar (B&M), online store, social media, and second hand. The findings show that brand relationships can be rein-forced differently in these channels. In B&M stores, sensing the quality of clothing, a customer experience that meets …
Sparsity-aware multiple relay selection in large multi-hop decode-and-forward relay networks
2016
In this paper, we propose and investigate two novel techniques to perform multiple relay selection in large multi-hop decode-and-forward relay networks. The two proposed techniques exploit sparse signal recovery theory to select multiple relays using the orthogonal matching pursuit algorithm and outperform state-of-the-art techniques in terms of outage probability and computation complexity. To reduce the amount of collected channel state information (CSI), we propose a limited-feedback scheme where only a limited number of relays feedback their CSI. Furthermore, a detailed performance-complexity tradeoff investigation is conducted for the different studied techniques and verified by Monte …