Search results for "ITC"

The Muti Coffari mine: natural and antrhopogenic hazard in evaporitic area (Sicily)

2007

Positive L1 observer design for positive Switched systems

2014

Published version of an article in the journal: Circuits, Systems, and Signal Processing. Also available from the publisher at: http://dx.doi.org/10.1007/s00034-013-9737-6 This paper investigates the problem of L1 observer design for positive switched systems. Firstly, a new kind of positive L1 observer is proposed for positive switched linear delay-free systems with observable and unobservable subsystems. Based on the average dwell time approach, a sufficient condition is proposed to ensure the existence of the positive L1 observer. Under the condition obtained, the estimated error converges to zero exponentially, and the L1 -gain from the disturbance input to the estimated error is less t…

»just de niillä oli sovmorgon» : Kulturella och pragmatiska aspekter på kodväxling i tvåspråkiga ungdomssamtal i Haparanda, Stockholm och Helsingfors

2017

The aim of the study is to explore situational, cultural and pragmatic factors that might trigger code-switching during informal conversations outside of the classroom at school among bilingual adolescents in Haparanda, Helsinki and Stockholm. An attempt is made to clarify different functions of code-switching, i.e. why bilingual adolescents code-switch from Swedish to Finnish and vice versa. The conversational data, consisting of video-recorded group and pair conversations, was collected in 2014–2015 at six junior high schools in Haparanda, Helsinki and Stockholm. The analysis of the data is qualitative. The theoretical framework is found in the field of translanguaging, which aims to desc…

Naisen asema ja naiseus Margaret Mitchellin romaanissa Gone with the wind

2001

The Possibility of Performing Money Functions by Digital Currencies Illustrated With an Example of Bitcoin

2018

In this paper the considerations on possibility of performing money functions by digital currency with an example of bitcoin are presented. The conditions of bitcoin emerge and its spectacular dynamic development caused by limitations of contemporary financial system are being discussed. This paper introduced one of the most popular digital currencies — bitcoin in terms of three elementary economic functions of money: mean of exchange, measure of value and store of value.

Supramolecular Association of Halochromic Switches and Halloysite Nanotubes in Fluorescent Nanoprobes for Tumor Detection

2022

Fluorescence imaging has become an indispensable tool in the biomedical laboratory to elucidate the fundamental dynamic and structural factors regulating cellular processes. The development of fluorescent nanoprobes represents a challenge to detect any cellular process under a microscope. Herein, a fluorescent nanomaterial was synthesized by exploiting the supramolecular interaction between a halochromic switch (1Cl) and halloysite nanotubes (HNTs). The successful synthesis of a HNTs/1Cl nanomaterial was confirmed by thermogravimetric analysis and Fourier transform infrared. The aqueous mobility was investigated by dynamic light scattering and ζ-potential measurements as well. Furthermore, …

Wall mannoproteins in cells from colonial phenotypic variants of Candida albicans.

1990

Candida albicans ATCC 26555 switched at high frequency (10(-1) to 10(-3)) between several phenotypes identified by colony morphology on a defined mineral amino-acid-containing agar medium supplemented with arginine and zinc (LAZ medium). When cells taken from colonies exhibiting distinct morphologies were plated directly onto LAZ agar, spontaneous conversion to all the variant phenotypes occurred at combined frequencies of 2.1 x 10(-1) to 9.5 x 10(-3). However, when cells taken from the different colonial phenotypes were plated directly onto an undefined medium (yeast extract/peptone/dextrose; YPD medium), or first incubated in liquid YPD medium and then cloned on YPD agar, all colonies obs…

Comparison of Pitch Range in Finnish (L1) and Russian (L2)

2007

The aim of the present study is to investigate whether the pitch range of a speaker can vary according to the language he speaks. The hypothesis is tested on Finnish university students studying Russian as a foreign language before and after their stay in Russia. First, the global pitch range (max – min) is determined. Second, the pitch range in different types of utterances (declarative, question, exclamation) is examined by superimposing pitch contours. The results indicate that the learners have a narrower pitch range and a less variable pitch than native speakers both in L1 and L2. However, the results also suggest that L2 experience seems to help most students to produce a more native-…

Sedimentary model and high-frequency cyclicity in a Mediterranean, shallow-shelf, temperate-carbonate environment (uppermost Miocene, Agua Amarga Bas…

1996

Uppermost Tortonian to lower Messinian temperate carbonates crop out in the Agua Amarga Basin (SE Spain). They consist of four units. The lower three units can be tentatively assigned to the lowstand systems tract of a fourth-order sequence, constituting in turn the lowstand (‘megatrough unit’), transgressive (‘breccia unit’) and highstand (‘bedded unit’) stages of a higher-order cycle. All these materials were deposited in a small pull-apart basin related to the sinistral Carboneras strike-slip fault system. The best represented is the bedded unit (up to 25 m thick), which consists of bioclastic, bryozoan/bivalve-dominated calcarenites/calcirudites with abundant fragments of echinoids, bar…

Large-scale drainage and breeding success in boreal forest grouse

2007

Summary 1 The breeding success of Finnish grouse has been in decline for decades. While it has been shown that fragmentation and modern forestry practices such as clear-cutting affect the viability of grouse populations, little is known about effects of large-scale drainage. The drainage network in Finland has increased dramatically during the past decades. By 1988, 6 million ha of bog ecosystems had been drained. This is likely to have had a profound direct and indirect effects on grouse productivity. Because ditches persist in time, large-scale drainage may therefore have strong potential for affecting the long-term breeding success of three forest grouse species in Finland. 2 Using a mix…