Search results for "NETWORKS"

Zjawisko korupcji w demokracji skonsolidowanej. Przypadek Finlandii

2017

Zjawisko korupcji w stabilnych, zamożnych państwach demokratycznych określanych mianem demokracji skonsolidowanych było przez długi czas ignorowane przez badaczy. Jednak w ostatnim dziesięcioleciu XX wieku pojawiły się czynniki, które doprowadziły do instytucjonalizacji kwestii korupcji w dojrzałych demokracjach. Tę zmianę obserwujemy również w Finlandii, która według Indeksu Percepcji Korupcji publikowanym przez Transparency International jest postrzegana jako jedno z najmniej skorumpowanych państw świata. Jednak również w tym kraju możemy odnaleźć specyficzne formy korupcji. Celem artykułu jest charakterystyka tzw. sieci starych braci jako praktyk korupcyjnych charakterystycznych dla Finl…

A Clustering Technique for the Parameter Estimation in Flow Pipe Network Models

1999

Hydrogeologinen WSN-ympäristömonitorointi : tapaustutkimus Kaitforsin patoalueen pohjavesien korkeusseurannan pilottijärjestelmästä

2017

Tämän pro gradu -tutkielman tavoitteena on selvittää Kaitforsin patoalueelle toteutetun pohjavesien monitorointiin Kokkolan yliopistokeskus Chydeniuksessa kehitetyn pilottijärjestelmän näkökulmasta, millaisin menetelmin vedenkorkeuksien ja veden laadun monitorointia voidaan IoT:n ja langattomien sensoriverkkojen asettamista lähtökohdista automatisoidusti suorittaa. Tämän lisäksi tutkimuksen tavoitteena on selvittää automatisoidun ympäristömonitoroinnin nykytilaa ja siihen kytkeytyviä kehityssuuntauksia. Tutkimuksessa perehdytään myös Kaitforsin patoalueelle asennetun pilottijärjestelmän IEEE 802.15.4 -standardiin perustuvaan langattoman sensoriverkon toimintaan ja siihen kytkeytyneiden sens…

Local indicators of spatio-temporal association on linear networks

In this work, we extend the Local Indicators of Spatio-Temporal Association (LISTA) functions (Siino et al. 2018) to the non-Euclidean space of linear networks. We introduce the local version of some inhomogeneous second-order statistics for spatio-temporal point processes on linear networks (Morandi and Mateu, 2019), namely the K-function and the pair correlation function. Following the work of Adelfio et al. (2019) for the Euclidean case, we employ the proposed LISTA functions to assess the goodness-of-fit of different spatio-temporal models fitted to point patterns occurring on linear networks. Indeed, the peculiar lack of homogeneity in a network discourages the usage of traditional spa…

Sistemi urbani in transizione: la crisi, gli effetti, le visioni

2013

Considerando le città i luoghi in cui si territorializzano le dinamiche globali e in cui avviene l’integrazione tra locale e globale, si propone un nuovo modello di sviluppo e di governo delle città, con l’obiettivo di riconfigurare il territorio per creare spazi competitivi multi-livello in cui i territori possono interagire e relazionarsi, dove il paradigma della “rete” diventa il modo con cui interpretare e intercettare la nuova logica spaziale dei flussi. Partendo dal modello insediativo policentrico e applicando il concetto del poly-decentricity, si propone un “modello di policentrismo reticolare multi-livello”, che intreccia le potenzialità di un territorio policentrico funzionalmente…

Raman Investigations to Identify Corallium rubrum in Iron Age Jewelry and Ornaments

2016

International audience; During the Central European Iron Age, more specifically between 600 and 100 BC, red precious corals (Corallium rubrum) became very popular in many regions, often associated with the so-called (early) Celts. Red corals are ideally suited to investigate several key questions of Iron Age research, like trade patterns or social and economic structures. While it is fairly easy to distinguish modern C. rubrum from bone, ivory or shells, archaeologists are confronted with ancient, hence altered, artifacts. Due to ageing processes, archaeological corals lose their intensive red color and shiny surface and can easily be confused with these other light colored materials. We pr…

Regulatory networks underlying mycorrhizal development delineated by genome-wide expression profiling and functional analysis of the transcription fa…

2017

Background: Ectomycorrhizal (ECM) fungi develop a mutualistic symbiotic interaction with the roots of their host plants. During this process, they undergo a series of developmental transitions from the running hyphae in the rhizosphere to the coenocytic hyphae forming finger-like structures within the root apoplastic space. These transitions, which involve profound, symbiosis-associated metabolic changes, also entail a substantial transcriptome reprogramming with coordinated waves of differentially expressed genes. To date, little is known about the key transcriptional regulators driving these changes, and the aim of the present study was to delineate and functionally characterize the trans…

Literacy Skills as Local Intangible Capital : The History of a Rural Lending Library c. 1860–1920

2016

PROPAGATING INTERFACES IN A TWO-LAYER BISTABLE NEURAL NETWORK

2006

The dynamics of propagating interfaces in a bistable neural network is investigated. We consider the network composed of two coupled 1D lattices and assume that they interact in a local spatial point (pin contact). The network unit is modeled by the FitzHugh–Nagumo-like system in a bistable oscillator mode. The interfaces describe the transition of the network units from the rest (unexcited) state to the excited state where each unit exhibits periodic sequences of excitation pulses or action potentials. We show how the localized inter-layer interaction provides an "excitatory" or "inhibitory" action to the oscillatory activity. In particular, we describe the interface propagation failure a…

Pinning of a kink in a nonlinear diffusive medium with a geometrical bifurcation: Theory and experiments

2004

International audience; We study the dynamics of a kink propagating in a Nagumo chain presenting a geometrical bifurcation. In the case of weak couplings, we define analytically and numerically the coupling conditions leading to the pinning of the kink at the bifurcation site. Moreover, real experiments using a nonlinear electrical lattice confirm the theoretical and numerical predictions.