Organic food prices and the consumer - review of the evidence

There is a lack of research on actual organic price knowledge and on how consumers deal with prices during information search and purchase decision at the point of sale. Further research into this can help market actors to strike the balance between price as a barrier and as a cue to quality perception. Research on consumers and organic food prices should increasingly differentiate between organic consumer segments, product categories, distribution channel and brands. Such research will guide market actors towards more targeted pricing strategies that can support further market growth

Anisotropic g factor in InAs self-assembled quantum dots

We investigate the wave functions, spectrum, and g-factor anisotropy of low-energy electrons confined to self-assembled, pyramidal InAs quantum dots (QDs) subject to external magnetic and electric fields. We present the construction of trial wave functions for a pyramidal geometry with hard-wall confinement. We explicitly find the ground and first excited states and show the associated probability distributions and energies. Subsequently, we use these wave functions and 8-band $k\cdot p$ theory to derive a Hamiltonian describing the QD states close to the valence band edge. Using a perturbative approach, we find an effective conduction band Hamiltonian describing low-energy electronic states in the QD. From this, we further extract the magnetic field dependent eigenenergies and associated g factors. We examine the g factors regarding anisotropy and behavior under small electric fields. In particular, we find strong anisotropies, with the specific shape depending strongly on the considered QD level. Our results are in good agreement with recent measurements [Takahashi et al., Phys. Rev. B 87, 161302 (2013)] and support the possibility to control a spin qubit by means of g-tensor modulation.Comment: 9 pages, 9 figure

Description of eight new Phaoniinae species from the Ethiopian region (Diptera: Muscidae).

Acht neue Arten der Gattung Limnophora, Hennigmyia, Hydrotaea, Helina und Mydaea werden aus der äthiopischen Region beschrieben und mit den nächstverwandten Arten verglichen.Nomenklatorische Handlungenparacaesioides Zielke, 1971 (Helina), spec. n.patersoni Zielke, 1971 (Helina), spec. n.zumpti Zielke, 1971 (Hennigmyia), spec. n.tanzaniae Zielke, 1971 (Hydrotaea), spec. n.wittei Zielke, 1971 (Hydrotaea), spec. n.abdominalis Zielke, 1971 (Limnophora), spec. n.stuckenbergi Zielke, 1971 (Limnophora), spec. n.capensis Zielke, 1971 (Mydaea), spec. n.Eight new species of the genera Limnophora, Hennigmyia, Hydrotaea, Helina and Mydaea from the Ethiopian region are described and compared with related species. Nomenclatural Actsparacaesioides Zielke, 1971 (Helina), spec. n.patersoni Zielke, 1971 (Helina), spec. n.zumpti Zielke, 1971 (Hennigmyia), spec. n.tanzaniae Zielke, 1971 (Hydrotaea), spec. n.wittei Zielke, 1971 (Hydrotaea), spec. n.abdominalis Zielke, 1971 (Limnophora), spec. n.stuckenbergi Zielke, 1971 (Limnophora), spec. n.capensis Zielke, 1971 (Mydaea), spec. n

Relative differentiability and integral representation of a class of weak Markov systems

AbstractIntegral representations for Markov systems have been given under various hypotheses. It is shown that two of these representations do not hold in general, and an improved version is given which is more general than existing results. The proof is based on a number of new results concerning weak Markov systems which may be of independent interest

Der Baader-Meinhof Komplex

This is a review of Der Baader Meinhof Complex (2008)

Resurrection of a Madagascan Dichaetomyia Species (Diptera: Muscidae) and Proposal of a New Replacement Name.

Dichaetomyia scutellaris (Zielke, 1974) kann eindeutig von Dichaetomyia rangeri (Zielke, 1973) unterschieden werden und ist als eigenständige Art zu betrachten. Die Unterschiede zwischen den beiden von Madagaskar stammenden Arten werden beschrieben und in einer Tabelle erfasst. Da der Name Dichaetomyia scutellaris bereits von Dichaetomyia scutellaris Malloch, 1928 besetzt ist, wird Dichaetomyia perineta nom. nov. als Ersatz vorgeschlagen. Für die existierende Bestimmungstabelle für Madagassische Dichaetomyia Arten werden entsprechende Ergänzungen empfohlen.StichwörterDichaetomyia scutellaris, replacement name, Dichaetomyia perineta nom. nov., key.Nomenklatorische Handlungenscutellaris Zielke, 1974 (Annaria), stat. rev. previously a synonym of Dichaetomyia rangeri (Zielke, 1973)perineta Zielke, 2016 (Dichaetomyia), nom. n. pro Dichaetomyia scutellaris (Ziekle, 1974), nec Dichaetomyia scutellaris Malloch, 1928Dichaetomyia scutellaris (Zielke, 1974) is recognized as a good species, distinct from Dichaetomyia rangeri (Zielke, 1973). The differences between the two species are described and listed in a table. As the name of Dichaetomyia scutellaris is preoccupied by Dichaetomyia scutellaris Malloch, 1928, Dichaetomyia perineta nom. nov. is proposed as replacement name. Amendments for the existing key to Madagascan Dichaetomyia species are proposed.KeywordsDichaetomyia scutellaris, replacement name, Dichaetomyia perineta nom. nov., key.Nomenclatural Actsscutellaris Zielke, 1974 (Annaria), stat. rev. previously a synonym of Dichaetomyia rangeri (Zielke, 1973)perineta Zielke, 2016 (Dichaetomyia), nom. n. pro Dichaetomyia scutellaris (Ziekle, 1974), nec Dichaetomyia scutellaris Malloch, 192

Ajami

This is a review of Ajami (2009)

Revalidation of an erroneously synonymized Helina species and reminder of a forgotten Lispe species from the Afrotropical Region

Helina scutellaris Zielke, 1971 ist in den Websites von Systema Dipterorum und Catalogue of Life als Synonym von Dichaetomyia rangeri (Zielke, 1973) aufgeführt. Die Art kann jedoch eindeutig von D. rangeri unterschieden werden und ist als eigenständige Art zu betrachten. Die wichtigsten taxonomischen Unterschiede werden aufgezeigt. Außerdem ist die eigenständige, bereits 1970 beschriebene Art Lispe congensis Zielke weder als eigenständige Art noch als Synonym in den Websites registriert. Um zu verhindern, dass L. congensis völlig in Vergessenheit gerät, wird sie hiermit in Erinnerung gebracht.Helina scutellaris Zielke, 1971 registered at the websites of Systema dipterorum and Catalogue of Life as a synonym of Dichaetomyia rangeri (Zielke, 1973), is recognized as a valid species, distinct from D. rangeri. The major taxonomic differences between the two species are discussed. Additionally, another valid species, Lispe congensis Zielke, 1970 is not to be found in the two websites, neither as a valid species, nor as synonym. To prevent L. congensis falling into complete oblivion, the species is brought to recollection

Descriptions of two new African Curranosia species with characteristics not yet reported from the genus and remarks on the subspecies of Curranosia spekei s. l. (Diptera; Muscidae)

Curranosia setissima spec. nov. und Curranosia allroundera spec. nov. werden von Uganda bzw. Kamerun beschrieben. Beide Arten fallen durch taxonomische Merkmale auf, die bisher nicht von anderen Arten der Gattung bekannt sind. Curranosia setissima unterscheidet sich von allen anderen Arten durch eine ventrale, überaus lange haarförmige Borste auf dem distalen Ende der Stammvene des Flügels. Curranosia allroundera weist praktisch alle für Curranosia typischen Merkmale auf, aber ungewöhnlich für die Gattung ist, dass das untere Thorakalschüppchen deutlich kleiner erscheint als bei den meisten anderen Arten der Gattung und sich auch nicht unter das Scutellum erstreckt. Darüber hinaus ist C. allroundera die erste Art der Gattung mit einem, je nach Lichteinfall, überwiegend violett- oder bläulich-braunen oder gelblichen Abdomen. Es wird ferner empfohlen, jede der drei Unterarten von Curranosia spekei s. l. als eine eigenständige Art zu behandeln, nämlich als Curranosia spekei (Jaennicke, 1867), Curranosia pilarara (Snyder, 1951) und Curranosia vansomereni (Snyder, 1951). Nomenklatorische Handlungen Curranosia setissima spec. nov. – urn:lsid:zoobank.org:act:5D58F0DE-2B3C-4CC6-8E82-67F4086BEB3F Curranosia allroundera spec. nov. – urn:lsid:zoobank.org:act:DB44B29A-762E-408C-902E-7BB61EAF2F65Curranosia setissima spec. nov. and Curranosia allroundera spec. nov. are described from Uganda and Cameroun, respectively. Both species are marked by taxonomic characteristics, which were not known hitherto from other species of the genus. C. setissima is distinguished from all other species by an extraordinarily long ventral hair-like seta on the distal end of the stem vein of the wing. Curranosia allroundera has practically all characteristics present which are typical for Curranosia, but, unusual for the genus, the lower calypter does not extend under the scutellum and appears in general clearly smaller than in most of the other species of the genus. In addition, it is the first species of the genus with a violet-brownish or yellowish-brownish abdomen, depending on the point of viewing. It is also recommended that each subspecies of Curranosia spekei s. l. be treated as a distinct species, namely as Curranosia spekei (Jaennicke, 1867), Curranosia pilarara (Snyder, 1951) and Curranosia vansomereni (Snyder, 1951). Nomenclatural acts Curranosia setissima spec. nov. – urn:lsid:zoobank.org:act:5D58F0DE-2B3C-4CC6-8E82-67F4086BEB3F Curranosia allroundera spec. nov. – urn:lsid:zoobank.org:act:DB44B29A-762E-408C-902E-7BB61EAF2F65   &nbsp