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Tytuł:
U.S. Naval Academy -- stewardship and direction
Autorzy:
Williams, J. A.
Powiązania:
USNI Proceedings 1997, nr 5, s. 67-72
Data publikacji:
1997
Tematy:
Akademia Marynarki Wojennej (Annapolis, Stany Zjednoczone) kształcenie 1997 r.
Marynarka wojenna szkolnictwo wyższe Stany Zjednoczone 1997 r.
Szkolnictwo wyższe wojskowe Stany Zjednoczone 1997 r.
Akademie wojskowe Stany Zjednoczone 1997 r.
Opis:
Charakterystyka szkolnictwa wyższego sił morskich Stanów Zjednoczonych.
Fot.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Community, Frame of Reference, and Boundary: Three Sociological Concepts and their Relevance for Virtual Worlds Research
Autorzy:
Williams, J. Patrick Williams
Powiązania:
https://bibliotekanauki.pl/articles/2138611.pdf
Data publikacji:
2009-08-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Massively-multiplayer online game (MMO)
Online community
Straight edge
Subculture
Videogame
World of Warcraft
Opis:
Virtual-worlds research is a dynamic and growing interdisciplinary area in the social sciences and humanities. Sociological theory can play an important role in how virtual worlds are conceptualized and studied. Drawing on data from ethnographic projects on two distinct types of virtual worlds, an asynchronous text-based internet forum and a massively-multiplayer online game, I consider what social and cultural similarities these two types of virtual worlds have with one another, despite their radically different forms and functions. My comparative analysis is framed in terms of three questions. First, are virtual worlds temporary and/or intentional communities? Second, what are the frames of reference through which virtual-world communities are built? Third, how do boundaries function in virtual worlds? My discussion suggests some of the common social and cultural features of virtual worlds.
Źródło:
Qualitative Sociology Review; 2009, 5, 2; 3-16
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Byt: jednoznaczny czy wieloznaczny?
Autorzy:
Williams, Christopher J. F.
Powiązania:
https://bibliotekanauki.pl/articles/1918920.pdf
Data publikacji:
2020-10-27
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Opis:
Jest to tekst wykładu wygłoszonego na Wydziale Filozofii KUL 29 kwietnia 1992 roku. Autor jest profesorem na Uniwersytecie w Bristolu. Jego dorobek naukowy obejmuje następujące książki: What Is Truth? Cambridge 1976; What Is Existence? Oxford 1981; What Is Identity. Oxford 1989; Being, Identity, and Truth. Oxford 1992. Tłumaczenia niektórych zdań używanych w tym wykładzie jako przykłady brzmią w języku polskim sztucznie, lecz użycie struktur gramatycznych zbliżonych jak najbardziej do struktur gramatycznych języka angielskiego było konieczne dla jasnego przedstawienia myśli autora. (Przyp. tłum.)
Źródło:
Roczniki Filozoficzne; 1994, 42, 1; 205-214
0035-7685
Pojawia się w:
Roczniki Filozoficzne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrical and Optical Properties of Highly Non-stoichiometric GaAs
Autorzy:
Kurpiewski, A.
Korona, K.
Kamińska, M.
Palczewska, M.
Jagadish, C.
Williams, J.
Powiązania:
https://bibliotekanauki.pl/articles/1876991.pdf
Data publikacji:
1995-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
73.90.+f
78.30.Er
Opis:
The studies of transport and optical properties of GaAs implanted with high arsenic doses were performed. As-implanted samples showed hopping conductivity and the exponential absorption tail in the near-IR region. Both effects were probably caused by the amorphization of implanted layer. Using EPR measurements it was found that arsenic antisite defect with high local strain field was created during implantation. Annealing of implanted layers at 600°C led to substantial removal of amorphization, decrease in absorption coefficient and hopping conductivity leading to resistive samples. The possible model of such behaviour may be similar to the one of suggested for low temperature GaAs layers.
Źródło:
Acta Physica Polonica A; 1995, 87, 2; 518-522
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Epitaxially Induced Defects in Sr- and O-doped La$\text{}_{2}$CuO$\text{}_{4}$ Thin Films Grown by MBE: Implications for Transport Properties
Autorzy:
Locquet, J.-P
Williams, E. J.
Powiązania:
https://bibliotekanauki.pl/articles/1964235.pdf
Data publikacji:
1997-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.72.Nn
74.62.Fj
81.15.Hi
74.72.Dn
Opis:
In this paper, the critical role played by various types of defects and strain relaxation mechanisms in high-T$\text{}_{c}$ thin films is highlighted and illustrated with examples. The defects are essential for providing adequate diffusion channels for oxygen ingress during the cooling step in c-axis thin films. The operation of strain relaxation mechanisms necessitated by the lattice mismatch between film and substrate can impose a compressive or tensile biaxial pressure, which either increases or reduces the critical temperature.
Źródło:
Acta Physica Polonica A; 1997, 92, 1; 69-84
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effectiveness of fMRI Data when Combined with Polygraph Data
Эффективность сочетания данных фМРТ с данными полиграфа
Autorzy:
Gordon, Nathan J.
Mohamed, Feroze B.
Platek, Steven M.
Ahmad, Harris
Williams, J. Michael
Faro, Scott H.
Powiązania:
https://bibliotekanauki.pl/articles/523470.pdf
Data publikacji:
2018
Wydawca:
Krakowska Akademia im. Andrzeja Frycza Modrzewskiego
Tematy:
Integrated Zone Comparison Technique
Polygraph
ASIT PolySuite Scoring Algorithm
Horizontal Scoring System
fMRI
Pneumo
Electro-dermal Response
Cardio
Opis:
The Integrated Zone Comparison Technique (IZCT) was utilized with computerized polygraph instrumentation and the Academy for Scientific Investigative Training’s Horizontal Scoring System ASIT PolySuite algorithm, as part of a blind study in the detection of deception. This paper represents a synergy analysis of combining fMRI only deception data with each of the three individual physiological parameters that are used in polygraph. They include the electro-dermal response (EDR), pneumo, and cardio measurements. In addition, we compared the detection accuracy analysis using each single parameter by itself. The fMRI score and each individual polygraph parameter score on individual subjects were averaged to establish an overall score.
Źródło:
European Polygraph; 2018, 12, 1(43); 19-25
1898-5238
2380-0550
Pojawia się w:
European Polygraph
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accuracy performance of e-Loran receivers under Cross-Rate Interference conditions
Autorzy:
Šafář, J.
Williams, P.
Vejražka, F.
Powiązania:
https://bibliotekanauki.pl/articles/320661.pdf
Data publikacji:
2012
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
e-Loran
Cross-Rate Interference
signal processing
Opis:
According to a recent Business Case produced by the General Lighthouse Authorities of the United Kingdom and Ireland (GLAs), e-Loran is the only system that, when combined with GNSS, can achieve cost effective resilient Positioning, Navigation and Timing (PNT) by 2018 for maritime e-Navigation. The GLAs currently operate a trial e-Loran service from Harwich, UK and are working towards establishing e-Loran Initial Operational Capability (IOC) in the seven busiest UK ports and port approaches by mid-2013. A future extension of e-Loran coverage to the entire GLA service area will require the installation of additional transmitting stations. When planning the installation of e-Loran transmitters service providers will need a good understanding of the effects of the new signals on the system’s performance. Since all e-Loran stations share the same frequency band and the e-Loran signals propagate over vast distances, special attention needs to be paid to the issue of intra-system interference. This is also referred to as Cross-Rate Interference (CRI) and is inherent to the way e-Loran operates. In this paper we examine the impact of CRI on the position accuracy performance of e-Loran receivers. First, a signal processing model for a typical e-Loran receiver is developed. This could provide the e-Loran community with a unified framework for receiver performance evaluation. Numerical and, where possible, analytical results obtained from the model are then presented, describing the achievable accuracy performance under different interference conditions. The theoretical results are also compared to those obtained from measurements made on a commercially available receiver driven by a signal simulator. Our analysis shows that modern e-Loran signal processing algorithms can achieve a substantial reduction of the negative effects of CRI. However, there is still an appreciable residual effect, which should be taken into account when designing future e-Loran networks and determining their coverage and performance.
Źródło:
Annual of Navigation; 2012, No. 19, part 1; 133-148
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isotopic ages of selected magmatic rocks from King George Island (West Antarctica ) controlled by magnetostratigraphy
Autorzy:
Nawrocki, J.
Pańczyk, M.
Williams, I.
Powiązania:
https://bibliotekanauki.pl/articles/2058738.pdf
Data publikacji:
2011
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Antarctica
King George Island
magnetostratigraphy
isotopic ages
Opis:
Isotopic and palaeomagnetic studies were carried out in the central part of King George Island. Selected mafic to intermediate igneous rocks were sampled for this purpose. Single-grain U-Pb dating of zircons from basalts to dacites was controlled by a whole rock 40Ar-39Ar data and the magnetostratigraphy. Five magmatic activity phases were distinguished in the SE coast of King George Island. The oldest, late Cretaceous (Campanian) phase represented by basalts of the Uchatka Point Formation are followed by the early to middle Eocene (~53–43 Ma) phase documented by the lava flows whose ages decrease from SW to NE. Next younger magmatic activity phases were recorded by the lava flows or vertical intrusions emplaced in the late Eocene (~37–35 Ma), late Oligocene (~~28-25 Ma) and late Pliocene to Holocene. The early to middle Eocene magmatic activity phase was the most extensive, producing the largest volume of magma in the study area. The new age determinations allow a more precise and credible stratigraphic correlation of the interbeds of sedimentary rocks observed in some places within the magmatic succession. The glacial provenance of the Herv' Cove diamictite is not obvious. It might represent a mountain river environment. Intense volcanic activity could be additional factor modelling the climate conditions of Antarctica in Paleogene
Źródło:
Geological Quarterly; 2011, 55, 4; 301-322
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rewizja wieku "najstarszych" skał w podłożu krystalicznym północno-wschodniej Polski
Revision of the "oldest" rocks age in the crystalline basement of NE Poland
Autorzy:
Krzemińska, E.
Wiszniewska, J.
Williams, I.S.
Powiązania:
https://bibliotekanauki.pl/articles/2074437.pdf
Data publikacji:
2006
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
pegmatyt
monacyt
ziarna cyrkonu
mikroskopia elektronowa
wysokopróżniowy mikroskop skaningowy
zircon
monazite
U-Pb SHRIMP geochronology
Late Paleoproterozoic
NE Poland
Opis:
The oldest geochronological results between 2.69–2.57 Ga was previously obtained by using K–Ar method on biotite from pegmatite from Jastrzębna IG–1 borehole. In consequence, in many published reports up to 1998, the Mazowsze (or Masovian) granitoid massif has been regarded as Archean age structure. Therewithal, other rocks in the area, e.g. Bargłów gneiss sequence traditionally were described as Archean in age. In the paper we present new U–Pb SHRIMP zircon and monazite results for above mentioned rocks which have been considered as Archean. Cathodoluminescence images and SHRIMP analysis were carried out for zircons and monazites from Jastrzebna IG–1 pegmatite of 514 m depth (a historical sample previously dated by K–Ar method) and for zircon magmatic cores from Bargłów IG–2 orthogneiss of the 708 m depth. The obtained U–Pb ages of 1826 š12 Ma (zircon) and 1789š34 Ma (monazite), and 1835š28 Ma (zircon) for two rock samples respectively have shown Paleoproterozoic origin. Only 4 of the 24 analysed zircons have clearly discordant results, which are all from the Jastrzebna pegmatite, where Pb–loss was possible (in partially metamict U–rich zircon grains). The new U–Pb SHRIMP dating indicates that Jastrzębna pegmatite and Bargłów magmatic protolith of the orthogneiss is only Late Paleoproterozoic in age and in general about 700 Ma younger than previously reported by K–Ar method. Therefore, there is no unequivocal evidence of the presence of Archean rocks in crystalline basement of NE Poland. This study has been undertaken as a part of a collaborative research agreement between the Polish Geological Institute and Geochronology and Isotope Geochemistry Research School of Earth Sciences of the Australian National University in Canberra.
Źródło:
Przegląd Geologiczny; 2006, 54, 11; 967-973
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
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