442 research outputs found
Yorknia Schockaert & Curini-Galletti & Ridder & Volonterio & Artois 2009, GEN. NOV.
No full textYORKNIA GEN. NOV. Diagnosis: Elongated Meidiamidae with many testes. Copulatory organ without atrial needles, and without accessory glandular organ. Prepenial copulatory bursa. Type species: Yorknia aprostatica sp. nov.Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De, Volonterio, Odile & Artois, Tom, 2009, A new family of lithophoran Proseriata (Platyhelminthes), with the description of seven new species from the Indo-Pacific and South America, and the proposal of three new genera, pp. 759-773 in Zoological Journal of the Linnean Society 155 (4) on page 765, DOI: 10.1111/j.1096-3642.2008.00463.
Yorknia Schockaert & Curini-Galletti & Ridder & Volonterio & Artois 2009, GEN. NOV.
No full textYORKNIA GEN. NOV. Diagnosis: Elongated Meidiamidae with many testes. Copulatory organ without atrial needles, and without accessory glandular organ. Prepenial copulatory bursa. Type species: Yorknia aprostatica sp. nov.Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De, Volonterio, Odile & Artois, Tom, 2009, A new family of lithophoran Proseriata (Platyhelminthes), with the description of seven new species from the Indo-Pacific and South America, and the proposal of three new genera, pp. 759-773 in Zoological Journal of the Linnean Society 155 (4) on page 765, DOI: 10.1111/j.1096-3642.2008.00463.x, http://zenodo.org/record/463503
Serrula Schockaert & Curini-Galletti & Ridder & Volonterio & Artois 2009, GEN. NOV.
No full textSERRULA GEN. NOV. Diagnosis: Meidiamidae with a single pair of testes and the pharynx in the anterior part of the body. Copulatory organ with a pair of short atrial needles sitting on a muscular base. Without stylet and accessory glandular organ. Seminal vesicles paired or single. With or without prepenial vagina. Genitointestinal connection absent? Type species: Serrula byronensis sp. nov. There are four species that are very similar, and these are described together.Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De, Volonterio, Odile & Artois, Tom, 2009, A new family of lithophoran Proseriata (Platyhelminthes), with the description of seven new species from the Indo-Pacific and South America, and the proposal of three new genera, pp. 759-773 in Zoological Journal of the Linnean Society 155 (4) on page 766, DOI: 10.1111/j.1096-3642.2008.00463.x, http://zenodo.org/record/463503
Meidiamidae Schockaert & Curini-Galletti & Ridder & Volonterio & Artois 2009, NEW FAMILY
No full textMEIDIAMIDAE, NEW FAMILY Diagnosis: Lithophoran Proseriata with an encapsulated brain, a precerebral gut diverticle, intraepidermal nuclei, and with the epidermis completely ciliated. Ovaries in front of the vitellaria, anterior of and close to the pharynx; a long female duct, the oviducts joining before the male copulatory organ, and with the female pore behind it (digonoporid condition). With a genito-intestinal connection close to the female pore, leading to a resorbing bursa incorporated in the gut. Testes: in front of the ovaries. Copulatory organ directed forwards, with a stylet and atrial needles, only needles, or only a stylet. One or a pair of seminal vesicles behind the copulatory organ. Accessory glandular organ, associated with the male atrium, present or not. Pharynx globular and directed ventrally. Type genus: Meidiama Marcus, 1946.Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De, Volonterio, Odile & Artois, Tom, 2009, A new family of lithophoran Proseriata (Platyhelminthes), with the description of seven new species from the Indo-Pacific and South America, and the proposal of three new genera, pp. 759-773 in Zoological Journal of the Linnean Society 155 (4) on page 760, DOI: 10.1111/j.1096-3642.2008.00463.x, http://zenodo.org/record/463503
Dreuxiola Schockaert & Curini-Galletti & Ridder & Volonterio & Artois 2009, GEN. NOV.
No full textDREUXIOLA GEN. NOV. Diagnosis: Filiform Meidiamidae with many testes. The prostate vesicle has the proximal pole directed forwards, where the paired seminal vesicles enter. The distal pole is directed backwards, but at its end, where the stylet is attached, it turns sharply forwards, so that the stylet is directed forwards. It enters the male atrium next to the atrial needles. These needles are surrounded by a glandular epithelium with its own muscular envelope. Female duct with a prepenial vagina, functioning as a copulatory bursa. Genito-intestinal duct near the female pore leading to a resorbing bursa. Type species: Dreuxiola philippi sp. nov.Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De, Volonterio, Odile & Artois, Tom, 2009, A new family of lithophoran Proseriata (Platyhelminthes), with the description of seven new species from the Indo-Pacific and South America, and the proposal of three new genera, pp. 759-773 in Zoological Journal of the Linnean Society 155 (4) on page 764, DOI: 10.1111/j.1096-3642.2008.00463.
Digging through the dirt: a general method for abstract discrete state estimation with limited prior knowledge
No full textAutonomous robots are often successfully deployed in controlled environments. Operation in uncontrolled situations remains challenging; it is hypothesized that the detection of abstract discrete states (ADS) can improve operation in these circumstances. ADS are high-level system states that are not directly detectable and influence system dynamics. An example of a typical ADS problem that is used in this thesis is that of a wheeled robot driving through puddles of mud that, when entered, alters the velocity of the robot. When the robot is in such a puddle, it is in an ADS 'mud', and when it is not, it is in an ADS 'free'. ADS can be indirectly inferred through the analysis of lower-level data such as the velocity of the robot. The goal of this thesis is to design a general abstract discrete state estimator (ADSE) operating with limited prior knowledge. An ADSE is a hierarchical system for detecting changes in ADS. The ADSE should be general; applicable to multiple ADSE problems. The ADSE should further operate under limited prior knowledge: only assuming that the amount of ADS and the ADS that describes the regular operation are known. The basis for the ADSE designed in this thesis is a Gaussian hidden Markov model (GHMM), a hidden Markov model enhanced with Gaussian emissions. Randomly generated experiments are done on a simple but general ADSE problem. Two unsupervised learning methods derived from Expectation Maximization are evaluated, namely Baum-Welch (BW) and forward extraction (FWE). FWE is introduced in this thesis and is a simpler implementation of Viterbi extraction, leveraging assumptions of ADSE to in theory gain computational efficiency. We found that both BW and FWE exhibit superior performance compared to a likelihood-based baseline estimator when the maximum score of the learning curve is considered. When the final score is considered, in some cases, FWE displays a deteriorating learning curve, resulting in worse final scores compared to the baseline. Furthermore, it was found that the lower the overlap coefficient (therefore the less similar the ADS), the higher the maximum reached score. It was further shown that BW exhibits better convergence than FWE to the true model parameters. Besides this, FWE obtained comparable or in some cases even superior scores compared to BW. In general, from the results, the diversity of the experiments conducted, and the assumptions made we can conclude that the GHMM can be a general method for an ADSE with limited prior knowledge. To quantify the suitability of the GHMM for ADSE, further research should include the evaluation of different ADSE methods on the same problem. There exists a tradeoff between the lower computational cost FWE and the more stable but more computationally intensive BW learning. Therefore, future research can include a combination of these methods. Other extensions include extending the GHMM to a Gaussian mixture hidden Markov model to allow for the modeling of more complex distributions, or the application to multiple states or a changing environment.https://github.com/Wouter-deBoer/adseMechanical Engineering | Vehicle Engineering | Cognitive Robotic
FIGURE 6 in On the Calviriidae Martens and Curini-Galletti, 1993 (Platyhelminthes, Proseriata), with the description of three new species
No full textFIGURE 6. Micrographs and drawings of the hard parts of Diskeria tasmanica n.sp. in the mount used for karyology. A. Corpulatory organ. B. The accessory organ, close to the copulatory organ. C. Second accessory organ in the mount. Scale bar for all figures= 50µ m.Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De & Artois, Tom, 2011, On the Calviriidae Martens and Curini-Galletti, 1993 (Platyhelminthes, Proseriata), with the description of three new species, pp. 32-46 in Zootaxa 3034 on page 40, DOI: 10.5281/zenodo.20319
sj-docx-1-eso-10.1177_23969873221145771 – Supplemental material for Association between type of intervention center and outcomes after endovascular treatment for acute ischemic stroke: Results from the MR CLEAN Registry
No full textSupplemental material, sj-docx-1-eso-10.1177_23969873221145771 for Association between type of intervention center and outcomes after endovascular treatment for acute ischemic stroke: Results from the MR CLEAN Registry by Susanne GH Olthuis, Wouter H Hinsenveld, Florentina ME Pinckaers, Marzyeh Amini, Hester F Lingsma, Julie Staals, Tobien HCML Schreuder, Wouter J Schonewille, Lonneke SF Yo, Yvo BWEM Roos, Alida A Postma, Diederik WJ Dippel, Wim H van Zwam, Robert J van Oostenbrugge and Inger R de Ridder in European Stroke Journal</p
Serrula CONCHARUM 2009, SP. NOV.
No full textSERRULA CONCHARUM SP. NOV. Serrula concharum: species of Serrula with paired seminal vesicles; needles are similar to those of S. maxillaria, 15-Mm long and 5-Mm wide. Pre-cerebral diverticle ends anteriorly of the statocyst. Serrula concharum: Eaglehawk Neck, Australia (Tasmania); exposed intertidal, with fine sand, and with a high density of Mesodesmatidae bivalves of the genus Paphies Lesson, 1830 (October 1993).Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De, Volonterio, Odile & Artois, Tom, 2009, A new family of lithophoran Proseriata (Platyhelminthes), with the description of seven new species from the Indo-Pacific and South America, and the proposal of three new genera, pp. 759-773 in Zoological Journal of the Linnean Society 155 (4) on pages 767-768, DOI: 10.1111/j.1096-3642.2008.00463.x, http://zenodo.org/record/463503
Serrula BYRONENSIS 2009, SP. NOV.
No full textSERRULA BYRONENSIS SP. NOV. Diagnoses: Serrula byronensis: species of Serrula with an unpaired seminal vesicle, a prepenial vagina, and a copulatory bursa. The needles are pointed: 14-Mm long, and 5–6-Mm wide at the base. The precerebral diverticle ends at the statocyst. Occurrence: Serrula byronensis: Byron Bay, Australia (New South Wales); exposed intertidal at Tallum Beach, mid-fine sand (October 1993).Published as part of Schockaert, Ernest R., Curini-Galletti, Marco, Ridder, Wouter De, Volonterio, Odile & Artois, Tom, 2009, A new family of lithophoran Proseriata (Platyhelminthes), with the description of seven new species from the Indo-Pacific and South America, and the proposal of three new genera, pp. 759-773 in Zoological Journal of the Linnean Society 155 (4) on page 767, DOI: 10.1111/j.1096-3642.2008.00463.x, http://zenodo.org/record/463503
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