179,593 research outputs found
Microclimate and ectotherm model based on NicheMapR for Rozen-Rechels et al.
No full textR script of the microclimatic and operative lizard modeling in our experimental system in CEREEP-Ecotron. See Rozen-Rechels et al. (not published) for more informations.</p
al- Maǧmūʿ al-auwal min rasāʾil aš-šaiḫ al-bābī Bahāʾ-allāh
No full textIzd. V. Rozen [Baron Viktor Romanovič Rozen][Arab.]al- Maǧmūʿ al-auwal min rasāʾil aš-šaiḫ al-bābī Bahāʾ-allāhIn arab. Schrift, pers., Vorw. in kyrill. Schr. russ.[russ.], [pers.-arab.
Anthophorula (Anthophorisca) nitens
No full textANTHOPHORULA (ANTHOPHORISCA) NITENS (COCKERELL) DIAGNOSIS: The larva of this species is also nearly identical to that of Anthophorula chionura, but the spines on the planar cuspal surface are smaller and less pronounced than those of A. chionura and A. consobrina, and the large spines on the ventral edge are more pronounced. MATERIAL STUDIED: Four predefecating larvae: CA: Riverside Co., 12 mi S of Corona, V-25-1985 (J.G. Rozen, R. Snelling). REMARKS: Nesting biology was described by Rozen and Snelling (1986).Published as part of Rozen, Jerome G., 2011, Immatures of Exomalopsine Bees with Notes on Nesting Biology and a Tribal Key to Mature Larvae of Noncorbiculate, Nonparasitic Apinae (Hymenoptera: Apidae), pp. 1-52 in American Museum Novitates 2011 (3726) on page 15, DOI: 10.1206/3726.2, http://zenodo.org/record/456580
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
De wilde rozen (Rosa L.) van Nederland
No full textDit artikel in boekvorm biedt nieuwe inzichten in het complexe geslacht Rosa L. en presenteert een systematische bewerking van de in Nederland in het wild voorkomende rozensoorten. In inleidende hoofdstukken worden de cultuurhistorie, biologie, morfologie, genetica, taxonomie en ecologie van rozen behandeld, daarnaast wordt het natuurbeheer inzake de bescherming van de wilde rozensoorten bediscussieerd en een voorstel voor een Rode Lijst gepresenteerd. Tweederde van de in Nederland inheemse rozensoorten komt in aanmerking voor plaatsing op deze Rode Lijst. Het artikel geeft bovendien een overzicht van de geschiedenis van het rozenonderzoek in Nederland. De systematische bewerking omvat een algemene bespreking van het geslacht, de secties en subsecties, en beschrijvingen van de 26 rozen soorten die in Nederland in het wild voorkomen, inclusief bijbehorende lijntekeningen, foto’s en verspreidingskaartjes; van deze 26 soorten zijn er 17 inheems met autochtone populaties. Dit hoofdstuk wordt voorafgegaan door een determinatiesleutel voor deze 26 soorten.
Rozen zijn polyploïd. Van de 26 in Nederland in het wild voorkomende rozensoorten behoren er 17 tot de sectie Caninae (inclusief de neofyten Rosa glauca en R. villosa). Deze groep omvat genetisch gestabiliseerde hybridogene soorten. Alle soorten van deze sectie zijn van allo poly ploïde oorsprong. Binnen de soorten van de sectie Caninae is de morfologische en genetische variabi liteit groot. Bovendien worden alle soorten in deze sectie gekenmerkt door een afwijkende vorm van meiose (de canina-meiose), waardoor bij de nakomelingen het merendeel van de chromosomen en de meeste onderscheidende kenmerken van de moeder afkomstig zijn (matroclinie). Een aantal voor de determinatie belangrijke kenmerken worden echter via de vader overgeërfd.
Na twintig jaar veldonderzoek aan rozen in Nederland, Duitsland en België, een grondige oriëntatie op de Europese literatuur en consultatie van internationaal vermaarde rozenexperts hebben de auteurs gekozen voor de soortomgrenzingen van Henker in de Illustrierte Flora von Mittel europa.1 Henkers benadering volgt een gulden middenweg tussen splitters en lumpers en zijn soortomgrenzingen zijn vrijwel gelijk aan die in de Duitse Standaardlijst2 en de Atlas Florae Europaea.3 Zij wijken echter af van de soortomgrenzingen die in onder meer Heukels’ Flora van Nederland4 en de Belgische5 en Engelse Flora6 worden aangehouden.
Tijdens het veldonderzoek en de revisie van herbariummateriaal zijn vijf nieuwe rozensoorten voor Nederland gevonden: Rosa henkeri-schulzei, R. inodora, R. nitida, R. pseudoscabriuscula en R. subcanina.
This paper provides new insights in the complex genus Rosa L. and presents a systematic treatment of the wild roses of The Netherlands. It gives an overview of the cultural history, biology, morphology, genetics, taxonomy, and ecology of roses and discusses nature conservation issues concerning wild rose species; a proposal for a Red List is included. The paper also presents an overview of the history of rose research in The Netherlands. The systematic treatment includes species descriptions, illustrations, photos, and distribution maps of the 26 species of roses occurring in the wild in The Netherlands, of which 17 are indigenous with autochthonous populations. This section is preceded by a key for these 26 species of wild roses.
Roses are polyploids. Seventeen species among the 26 rose species occurring in the wild, including the neophytes Rosa glauca and R. villosa, belong to the section Caninae. This group contains genetically stabilised hybridogenic species. All species of this section are of allopolyploid origin and show tremendous intraspecific variability in morphology and genetics. In addition, all representatives of the section Caninae are characterised by a form of unbalanced meiosis (socalled ‘canina meiosis’), by which most chromosomes in the offspring have a maternal origin and offspring traits are primarely derived from the mother plant (matrocliny). A few taxonomically important characters, however, are inherited paternally.
After twenty years of field research in The Netherlands, Germany and Belgium, a thorough study of the European literature, and consultation of several international rose taxonomists, the authors adopted the species delimitations in roses used by Henker in the Illustrierte Flora von Mitteleuropa1, which closely resemble those used in the German Standard List2 and the Atlas Florae Europaea.3 Although Henker’s species delimitations differ from those used in Heukels’ Flora van Nederland4, and the Belgian5 and the British Floras6, his approach represents a perfect compromise between splitters and lumpers.
Revision of herbarium material and field inventories resulted in finding five rose species new to The Netherlands: Rosa henkeri-schulzei, R. inodora, R. nitida, R. pseudoscabriuscula, and R. subcanina
On the accuracy of analytic approximations for the mean cycle time in semiconductor manufacturing equipment with PM events
No full textPreventive Maintenance activities (PMs) are essential for semiconductor manufacturing equipment. Since PMs are typically non-preemptive, they are usually modeled as high priority customers. We examine the accuracy of a popular approximation for the mean cycle time in G/G/1 queues with high priority PM customers. This approximation follows Kingman's and is based on a heavy traffic assumption. We observe that the approximations can perform very poorly when the mean and coefficient of variation of the PM durations are large and small, respectively. This is precisely the practical case for PMs in semiconductor manufacturing. We propose two practical correction candidates and assess their effectiveness. SPECIAL SESSION CODE = 4yd3b
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
FIGURE 3 in A new species of Geodiscelis Michener & Rozen (Hymenoptera: Colletidae: Xeromelissinae) from Peru
No full textFIGURE 3. Figures illustrating characters used in the taxonomic key. A–B: dorsal view of genital capsule; (A) medioventral process on gonocoxa conical and strongly developed in Geodiscelis antiminera sp. nov., (B) rounded and weakly developed medioventral process of gonocoxa in G. nazcalinea. C–D: lateral view of head; (C) supraclypeal area flat in G. antiminera sp. nov., (D) convex and protuberant in G. thaumaskelos. E–F: lateral view of mesosoma; (E) metepisternum glabrous in G. antiminera sp. nov., (F) densely pilose in G. nazcalinea.Published as part of Ferrari, Rafael R., 2015, A new species of Geodiscelis Michener & Rozen (Hymenoptera: Colletidae: Xeromelissinae) from Peru, pp. 293-300 in Zootaxa 4033 (2) on page 298, DOI: 10.11646/zootaxa.4033.2.10, http://zenodo.org/record/23732
Exploring the efficacy of negative pressure wound therapy in the management of mycobacterium ulcerans wounds: A comprehensive literature review
No full textMycobacterium ulcerans (M Ulcerans) infection leads to the debilitating Buruli ulcer (BU), characterized by necrotizing skin and soft tissue lesions. Conventional treatment primarily focuses on an antibiotic regimen, but wound management remains paramount to patient recovery. This literature review aims to evaluate the efficacy and benefits of Vacuum Assisted Dressing (VAC) in the treatment and management of BU wounds. A systematic literature search was undertaken using databases such as PubMed, Cinahl, Cochrane database, Joanna Briggs Institute, Medline, Internurse, Nursing & Allied Health database, and Scopus search from January 1995 to December 2023. The key search terms included "Mycobacterium ulcerans", OR "Buruli ulcer", AND "vacuum assisted dressing", "vacuum assisted therapy", "Vacuum Assisted Dressing", "negative pressure wound therapy", and "Negative Pressure Wound Therapy (NPWT)". The exclusion criteria were animal studies and studies not in the English language. The current literature emphasizes the importance of antibiotic treatment for BU and highlights the skin and soft tissue damage that results in open, infected wounds. However, there is a notable lack of quantitative data on the efficacy of NPWT for treating BU wounds. Early evidence indicates that NPWT might accelerate wound healing, decrease secondary infections, and enhance wound bed readiness for grafting or secondary healing. While more comprehensive quantitative studies are warranted, NPWT emerges as a promising adjunctive therapy in the holistic management of BU wounds, offering benefits that may improve patient outcomes and reduce morbidity
- …
