Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Walter Kramer"'
Autor:
Walter Kramer, T. Ziebach
Publikováno v:
Statistica, Vol 64, Iss 3, Pp 505-510 (2007)
We show that the weak Pareto law, as used to characterize the tail behaviour of income distributions, implies regularly varying tail probabilities, but that the reverse implication does not hold. We also establish implications among other versions of
Externí odkaz:
https://doaj.org/article/75af04ee2d2b40a7b16a3dbcee42e068
Autor:
Walter Kramer
Publikováno v:
Statistica, Vol 63, Iss 3, Pp 435-440 (2007)
It is shown that the null distribution of the F-test in a linear regression is rather non-robust to spatial autocorrelation among the regression disturbances. In particular, the true size of the test tends to either zero or unity when the spatial aut
Externí odkaz:
https://doaj.org/article/d0fa2d0d3eb24fc9830858ff27e7a6d9
Molecular Methods Used for the Identification of Potentially Probiotic Lactobacillus reuteri Strains
Publikováno v:
Food Technology and Biotechnology, Vol 43, Iss 3, Pp 295-300 (2005)
Forty potentially probiotic Lactobacillus strains as well as reference strains of different genera were grown under standardised conditions. Cell masses were harvested and DNA was isolated. For identification, all strains were subjected to genus-spec
Externí odkaz:
https://doaj.org/article/87832a2956c5459093c2e2b7397a0174
Autor:
Walter Kramer, Philipp Sibbertsen
Publikováno v:
International Journal of Business and Economics. 1(3):235-242
We derive the limiting null distributions of the standard and OLS-based CUSUM- tests for a structural change of the coefficients of a linear regression model in the context of long-memory disturbances. We show that both tests behave fundamentally dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_______645::265419176d445bfc76f4c805b7b2dac7
Publikováno v:
Archiv der Pharmazie. 324:529-531
Syntheses of New Bridged Heterocycles by 1,3-Dipolar Cycloaddition Cycloaddition of bridged Quinonehydrazones 1, 4, 5 with mesoionic reagents are studied; the p-nitrophenylhydrazone 1 reacts with 3-phenylsydnone (2) under elimination of CO2 and dehyd
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1e7e84a334bae2d31093ddef3eaff4c
https://doi.org/10.1002/ardp.2503240901
https://doi.org/10.1002/ardp.2503240901
Publikováno v:
Journal of Heterocyclic Chemistry. 36:1001-1012
Nucleophilic reactions of two 2,2′-bisbenzimidazole systems, namely the bis(2H-benzimidazole-2-ylidene) 2 and the dispiro[2H-benzimidazole-2,1′-cyclohexane-4′,2″-2″H-benzimidazole] 3, as well as the syntheses of new 2,2′-bisbenzimidazoles
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2323097b551371f8c6893165f322a594
https://doi.org/10.1002/jhet.5570360429
https://doi.org/10.1002/jhet.5570360429
Publikováno v:
Journal of Heterocyclic Chemistry. 36:117-128
The readily available title compounds 2, 16 and 27 react with pseudohalogenes (cyanide, azide), carbon and heterocyclic N-nucleophiles in the presence of manganese dioxide to give the corresponding substituted azaisobenzimidazoles (= 2H-azabenzimidaz
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60f90d1d9f0474fec57c7cded9cfdd5c
https://doi.org/10.1002/jhet.5570360118
https://doi.org/10.1002/jhet.5570360118
Publikováno v:
Journal of Chromatography B: Biomedical Sciences and Applications. 664:107-118
HIV-1 reverse transcriptase from the HIV-1 strain WMF 1.13 was expressed in Escherichia coli JM 105 using a pKK233-2 vector. The bacteria were cultivated in a 20-1 fermentor with 14-1 net volume using M9ZB medium containing bactotryptone and yeast ex
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb31d2b5c380aaef78ff32a0a11a54be
https://doi.org/10.1016/0378-4347(94)00468-k
https://doi.org/10.1016/0378-4347(94)00468-k
Publikováno v:
Helvetica Chimica Acta. 77:2175-2190
The readily available title compounds 4a and 24 react with N-, O-, S-, and C-nucleophiles in presence of MnO2 to give the corresponding mono- or disubstituted 2H-azabenzimidazoles ( = azaisobenzimidazoles), e.g., 11–18 and 26a–h, respectively, or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a1274659ff45c7c0a26fb829f706949
https://doi.org/10.1002/hlca.19940770811
https://doi.org/10.1002/hlca.19940770811
Publikováno v:
Helvetica Chimica Acta. 76:2407-2417
Syntheses and Investigations of [Oxazolo[2,3-a]isoindol-9b(2H)-yl]phosphonates and -phosphinates: a New Class of Heterocycles We attempted to synthesize diethyl (1-methyl-2-phthalimidoethyl)phosphonate (14a) in a Michaelis-Becker reaction using dieth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68692cd5cfb4028746e08aea66deaaea
https://doi.org/10.1002/hlca.19930760627
https://doi.org/10.1002/hlca.19930760627