43,322 research outputs found
Analytic Kramer kernels, Lagrange-type interpolation series and de Branges spaces
No full textThe classical Kramer sampling theorem provides a method for obtaining orthogonal sampling formulas. In particular, when the involved kernel is analytic in the sampling parameter it can be stated in an abstract setting of reproducing kernel Hilbert spaces of entire functions which includes as a particular case the classical Shannon sampling theory. This abstract setting allows us to obtain a sort of converse result and to characterize when the sampling formula associated with an analytic Kramer kernel can be expressed as a Lagrange-type interpolation series. On the other hand, the de Branges spaces of entire functions satisfy orthogonal sampling formulas which can be written as Lagrange-type interpolation series. In this work some links between all these ideas are established
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Göttinger Bodenkundliche Berichte 1
No full textInhalt:
1. Moschrefi, N., u. Meyer, B.:
Bedeutung der Wasserbewegung im ungesättigten Feuchtezustand (unsaturated flow), des
Lufteinschlusses und des Grundwasserstandes
für Niederschlagsversickerung und Grundwasserspende.
- Modellversuche an Lößsäulen -
2. Ulrich, B.:
Das System Boden - Pflanze in Öologischer Sicht.
3. Kramer, W., Lorenz, J., u. Meyer, B.:
Die Messung der Wärmeleitfähigkeit als
Mittel kontinuierlicher Feuchtemessungen
im Boden.
4. Ulrich, B.:
Charakterisierung des Nährstoffzustandes
von Boden.
5. Kramer, W., u. Meyer, B.:
Messungen der ungesättigten hydraulischen
Leitfähigkeit von Bodenproben natürlicher
Lagerung mit Hilfe einer Doppelmembran-
Apparatur.
6. Bartels, R., u. Kuntze, II.:
Ungesättigte hydraulische Leitfähigkeit
von Moorböden.
(1. vorläufige Mitteilung)1. Moschrefi, N., u. Meyer, B.:
Bedeutung der Wasserbewegung im ungesättigten Feuchtezustand (unsaturated flow), des
Lufteinschlusses und des Grundwasserstandes
für Niederschlagsversickerung und Grundwasserspende.
- Modellversuche an Lößsäulen -
2. Ulrich, B.:
Das System Boden - Pflanze in Öologischer Sicht.
3. Kramer, W., Lorenz, J., u. Meyer, B.:
Die Messung der Wärmeleitfähigkeit als
Mittel kontinuierlicher Feuchtemessungen
im Boden.
4. Ulrich, B.:
Charakterisierung des Nährstoffzustandes
von Boden.
5. Kramer, W., u. Meyer, B.:
Messungen der ungesättigten hydraulischen
Leitfähigkeit von Bodenproben natürlicher
Lagerung mit Hilfe einer Doppelmembran-
Apparatur.
6. Bartels, R., u. Kuntze, II.:
Ungesättigte hydraulische Leitfähigkeit
von Moorböden.
(1. vorläufige Mitteilung)researc
Göttinger Bodenkundliche Berichte 1
No full textInhalt:
1. Moschrefi, N., u. Meyer, B.:
Bedeutung der Wasserbewegung im ungesättigten Feuchtezustand (unsaturated flow), des
Lufteinschlusses und des Grundwasserstandes
für Niederschlagsversickerung und Grundwasserspende.
- Modellversuche an Lößsäulen -
2. Ulrich, B.:
Das System Boden - Pflanze in Öologischer Sicht.
3. Kramer, W., Lorenz, J., u. Meyer, B.:
Die Messung der Wärmeleitfähigkeit als
Mittel kontinuierlicher Feuchtemessungen
im Boden.
4. Ulrich, B.:
Charakterisierung des Nährstoffzustandes
von Boden.
5. Kramer, W., u. Meyer, B.:
Messungen der ungesättigten hydraulischen
Leitfähigkeit von Bodenproben natürlicher
Lagerung mit Hilfe einer Doppelmembran-
Apparatur.
6. Bartels, R., u. Kuntze, II.:
Ungesättigte hydraulische Leitfähigkeit
von Moorböden.
(1. vorläufige Mitteilung)1. Moschrefi, N., u. Meyer, B.:
Bedeutung der Wasserbewegung im ungesättigten Feuchtezustand (unsaturated flow), des
Lufteinschlusses und des Grundwasserstandes
für Niederschlagsversickerung und Grundwasserspende.
- Modellversuche an Lößsäulen -
2. Ulrich, B.:
Das System Boden - Pflanze in Öologischer Sicht.
3. Kramer, W., Lorenz, J., u. Meyer, B.:
Die Messung der Wärmeleitfähigkeit als
Mittel kontinuierlicher Feuchtemessungen
im Boden.
4. Ulrich, B.:
Charakterisierung des Nährstoffzustandes
von Boden.
5. Kramer, W., u. Meyer, B.:
Messungen der ungesättigten hydraulischen
Leitfähigkeit von Bodenproben natürlicher
Lagerung mit Hilfe einer Doppelmembran-
Apparatur.
6. Bartels, R., u. Kuntze, II.:
Ungesättigte hydraulische Leitfähigkeit
von Moorböden.
(1. vorläufige Mitteilung)researc
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Ochrona wód powierzchniowych w lubuskiem w kontekście realizacji polityki UE
No full textIn this article author – based on literature, documents and statistical data - attempted to analyze the problem of protection surface waters in Lubuskie in the context of the implementation of European Union policy. A review of concepts relating to the EU Water Framework Directive and integrated water management was made. Investment activities in the field of water and wastewater were compared with environmental data in order to obtain a synthetic evaluation of the scale of the province. In summary applied conclusions.W opracowaniu podjęto – na podstawie literatury, dokumentów oraz danych statystycznych – próbę analizy problemu ochrony wód powierzchniowych w województwie lubuskim w kontekście realizacji polityki Unii Europejskiej. Dokonano przeglądu pojęć dotyczących Ramowej Dyrektywy Wodnej UE i zintegrowanego zarządzania wodami. Działania inwestycyjne w zakresie gospodarki wodno-ściekowej porównano z danymi środowiskowymi w celu uzyskania syntetycznej oceny w skali omawianego województwa. W podsumowaniu opracowania zawarto wnioski
Coelindroma fungosa Kramer 1964
No full text<i>Coelindroma fungosa</i> Kramer, 1964 <p>Figs 25, 28</p> <p> <b>Specimens examined.</b> Male (INPA), with following labels: “ BRASIL, <i>Amazonas,</i> Ipixuna, Rio\ Gregório, Com. Lago Grande\ 07°10’11.7’’S – 71°49’10.3’’W \ 18–23.v.2011, varredura\ J. T. Câmara, R. F.\ Silva, A. Somavilla, R. Ale-Rocha leg.; <i>Coelindroma fungosa</i> Kramer,1964. Det. Gonçalves C. & Marques-Costa A.P., 2011 ”.</p> <p> <b>Comments.</b> For the first time <i>Coelindroma fungosa</i> is recorded from Brazil, occurring in the State of Amazonas.</p>Published as part of <i>Gonçalves, Clayton Correa, Marques-Costa, Ana Paula & Ale-Rocha, Rosaly, 2012, Coelindroma Kramer (Hemiptera: Cicadellidae: Neocoelidiinae) from Brazil: description of two new species and new record of C. fungosa, pp. 40-47 in Zootaxa 3349</i> on pages 44-47, DOI: <a href="http://zenodo.org/record/281532">10.5281/zenodo.281532</a>
Petrocephalus wesselsi Kramer and Van der Bank 2000
No full text<i>Petrocephalus wesselsi</i> Kramer and Van der Bank, 2000 <p> ZSM 28556, holotype, 10.8 cm SL; ZSM 28554 – ZSM 28555, ZSM 28557 – ZSM 28566 (12 paratypes, 5.6–10.1 cm SL), SMF 28266 (13 paratypes, 5.7–8.9 cm SL), SAIAB 054449 (13 paratypes, 5.4–8.4 cm SL), all from Sabie River, Kruger National Park, South Africa, bridge near Lower Sabie tourist camp (25 ◦ 07 ′ S, 31 ◦ 55 ′ E), 29–30 March 1996, coll. F.H. Van der Bank and B. Kramer, 139 µS <i>/</i> cm and 25.1 ◦ C,</p> <p>Non-types: SAIAB 85922(5), 2.0–3.0 cm SL, same time and place etc. as previous paragraph,</p> <p> SAIAB 58157 (9), SL 4.7–9.8 cm, Nwanedzi River (Limpopo system) at Nwanedi, Northern Province, South Africa, below dams, 22 ◦ 37 ′ 45 ′′ S, 30 ◦ 23 ′ 52 ′′ E, 25 March 1997, coll B. van der Waal,</p> <p> SAIAB 85920 (2), 4.8–5.7 cm SL, Groot Letaba River (Olifants System, Limpopo drainage) just below Tzaneen Dam, Northern Province, South Africa, 23 ◦ 49 ′ 00 ′′ S, 30 ◦ 10 ′ 00 ′′ E, 22 September 1998, coll. W. Vlok and B. Kramer, 114 µS <i>/</i> cm and 21.4 ◦ C,</p> <p> SAIAB 85923 (6), 3.8–9.0 cm SL, Blyde River (Olifants System, Limpopo drainage) just below Blydepoortriviers Dam, Mpumalanga, South Africa, 24 ◦ 32 ′ 00 ′′ S, 30 ◦ 47 ′ 05 ′′ E, 25 <i>/</i> 26 September 1998, coll. J. Engelbrecht and B. Kramer, 154 µS <i>/</i> cm and 16.7 ◦ C, 82–90 mm SL,</p> <p> SAIAB 85919 (1), 7.2 cm SL, Pongola River, KwaZulu-Natal, South Africa, at bridge on road from Ndumo to Kosibay, 27 ◦ 01 ′ 15 ′′ S, 32 ◦ 18 ′ E, 14 August 1999, coll. J. Engelbrecht and B. Kramer, 600 µS <i>/</i> cm and 22 ◦ C,</p> <p> SAIAB 068279 (2), 4.6–8.8 cm SL, Mnjoli Dam Wall, Mbuluzi River, Swaziland, 26 ◦ 09 ′ 41 ′′ S, 31 ◦ 40 ′ 14 ′′ E, 29 January 2003, coll. R. C. Boycott,</p> <p> SAIAB 067228 (1), 8.9 cm SL, Mnjoli Dam Wall, Mbuluzi River, Swaziland, 26 ◦ 09 ′ 41 ′′ S, 31 ◦ 40 ′ 14 ′′ E, 14 August 2002, coll. R. C. Boycott,</p> <p> SAIAB 066355 (1), 9.8 cm SL, Mnjoli Dam Wall, Mbuluzi River, Swaziland, 26 ◦ 09 ′ 26 ′′ S, 31 ◦ 40 ′ 10 ′′ E, 19 July 2002, coll. R. C. Boycott,</p> <p> SAIAB 95989 (30), 3.7–6.0 cm SL, specimens: Mogol05–Mogol14, Mogol17, Mogol20, Mogol21, Mogol30, Mogol31a, Mogol31b, Mogol39–Mogol51; and ZSM 39537(8), 4.5–5.9 cm SL, specimens: Mogol52–Mogol56, Mogol58–Mogol60; and ZSM 39538 (10), 4.3–5.4 cm SL, specimens: Mogol 61– Mogol 66, MogolDead 1– MogolDead 3, ohne Fish-ID; Limpopo System: Mokolo River, 24 ◦ 06.823 ′ S, 27 ◦ 48.153 ′ E, altitude 932 m, near Hermanusdorings, 20 October 2008, coll. A. Hoffman and B. Kramer,</p> <p> SAIAB 96537 (2), 4.8 cm SL, specimens Palala 04, Palala 05, Limpopo System: Lepalala River, 23 ◦ 59.049 ′ S, 28 ◦ 24.281 ′ E, 1144 m altitude, near Melkrivier, 22 October 2008, coll. A. Hoffman and Bernd Kramer.</p> <p> <i>Other material examined, of uncertain status</i></p> <p> SAIAB 059515 (1), 8.5 cm SL, <i>Petrocephalus</i> sp., Tanzania, Lake Rukwa at mouth of Luika River, Lake Rukwa, Luika, 8 ◦ 24 ′ 5 ′′ S, 32 ◦ 54 ′ 20 ′′ E, 19 November 1995, coll. P. Skelton,</p> <p> SAIAB 039264 (1), 7.7 cm SL, <i>Petrocephalus</i> sp., Malawi, Zikanyeka Beach, Lake Chiuta, 14 ◦ 43 ′ S, 35 ◦ 51 ′ E, 13 July 1992, coll. D. Tweddle.</p>Published as part of <i>Kramer, Bernd, Bills, Roger, Skelton, Paul & Wink, Michael, 2012, A critical revision of the churchill snoutfish, genus Petrocephalus Marcusen, 1854 (Actinopterygii: Teleostei: Mormyridae), from southern and eastern Africa, with the recognition of Petrocephalus tanensis, and the description of five new species, pp. 2179-2258 in Journal of Natural History 46 (35 - 36)</i> on pages 2193-2194, DOI: 10.1080/00222933.2012.708452, <a href="http://zenodo.org/record/4590828">http://zenodo.org/record/4590828</a>
Many-electron theory of resonant charge transfer: Role of surface states in He and He+ scattering off Si(100)
No full textA many-electron theory of resonant charge transfer, originally formulated for the scattering of an atom with an empty valence orbital from a surface, is extended to treat the case where the valence orbital is initially occupied by one or two electrons. The scattering of He and He+ from the Si(001) surface is investigated. The interaction is assumed to be with the narrow band of surface states, and not the much wider bulk band. As a result, considerable oscillations are found in the ionization and/or neutralization probabilities as a function of the incident energy.PT: J; CR: AMOS AT, 1989, ADV CHEM PHYS, V76, P335 AMOS AT, 1989, SOLID STATE COMMUN, V71, P449 BLOSS W, 1978, SURF SCI, V72, P277 BRAKO R, 1981, SURF SCI, V108, P253 BURROWS BL, 1984, Q APPL MATH, V42, P73 BURROWS BL, 1990, J PHYS A-MATH GEN, V23, P1101 BURROWS BL, 1991, SURF SCI, V253, P365 CHADI DJ, 1975, PHYS STATUS SOLIDI B, V68, P405 HAGSTRUM HD, 1954, PHYS REV, V96, P336 HAGSTRUM HD, 1961, PHYS REV, V122, P83 HERMAN F, 1963, ATOMIC STRUCTURE CAL IHM J, 1980, PHYS REV B, V21, P4592 MUDA Y, 1980, SURF SCI, V97, P283 MUDA Y, 1988, NUCL INSTRUM METH B, V33, P388 MUDA Y, 1988, PHYS REV B, V37, P7048 PAULING L, 1935, INTRO QUANTUM MECHAN ROBERTS N, 1990, SURF SCI, V236, P112 SOUDA R, 1985, SURF SCI, V150, L59 SOUDA R, 1986, NUCL INSTRUM METH B, V15, P114 SOUDA R, 1986, NUCL INSTRUM METH B, V15, P138 SOUDA R, 1986, SURF SCI, V176, P657 SULSTON KW, 1988, PHYS REV B, V37, P9121 SULSTON KW, 1988, SURF SCI, V197, P555 SULSTON KW, 1989, SURF SCI, V244, P543 WEAKLIEM PC, 1990, SURF SCI, V232, L219 WEISENDANGER R, 1990, SURF SCI, V232, P1; NR: 26; TC: 4; J9: PHYS REV B; PG: 11; GA: HZ245Source type: Electronic(1
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