74 research outputs found
Incoltorrida madagassica Steffan 1973
No full text<i>Incoltorrida madagassica</i> Steffan <p>Figs. 5, 6 (habitus); 14, 15, 19 (genitalia); 38 (map); 48, 49 (habitat)</p> <p> <i>Incoltorrida madagassica</i> Steffan 1973: 635.</p> <p> <b>Type material:</b> Holotype (male) with labels: “ HOLOTYPUS [red]// Madagascar (65) Cap Ambalasandra H. BERTRAND, 29.III.60 //MUS. ROY. AFR. CENTR. caput fehlt! TO-ma-03. mikr prap: 03.01. = genital// Incoltorrida madagassica STEFFAN 1973 HOLOTYPUS male [red].” Now deposited, with permanent microslide of male genitalia, in MNHN; see remarks.</p> <p> <b>Material examined (52):</b> <b>Fianarantsoa</b>, 20.7722S 47.1809E; Amoron’i Mania, 3km south of Ambalamanakana next to RN7, Ankazomivady forest, hygropetric rocks and marsh with vegetation, elev. 1700 m, 1 xi 2014, J. Bergsten, T. Ranarilalatiana & S. Holmgren (MAD 14-02) (3 NHRS). <b>Toamasina</b>: Analanjirofo: S. side of Nosy Mangabe, Masoala National Park, hygropetric rocks by the sea, 15.5056S, 49.7571E, sea level, 20.II.2018, MAD 18- 60, J. Bergsten & T. Ranarilalatiana (49 NHRS, BMNH, MCZ, PBZT / MBC).</p> <p> <b>Differential Diagnosis.</b> Similar in some characters to <i>I. magna</i>; differing therefrom by smaller size (ca. 2.31 vs. 2.62 mm), less convex elytra with a more gradual posterior declivity, slightly narrower elytral costae, smaller elytral serial punctures, more sinuate fifth elytral costa, and especially differing by having two carinae and a distinct impression between the carinae on the basal 1/2 of the pronotum. The elytron of <i>I. madagassica</i> has two transverse ridges, offset from one another, one linking costae #3 and #5 (located just behind the humeral umbo), and one linking costae #5 and #8 (located at the sinuation dip of costa #5). In <i>I. magna</i> these two ridges are located in the same plane, not offset from one another. The male genitalia of <i>I. madagassica</i> differ from that of <i>I. magna</i> in being less arcuate in lateral view, and shaped differently in ventral view (Figs. 14, 15, 19, 21).</p> <p> <b>Description</b>. Size: holotype (length/width, mm): body (length to elytral apices) 2.31/1.29; head width 0.46; pronotum 0.50/0.96; elytra 1.51/1.29. Dorsum dark brown, venter brown to reddish brown, legs brown to reddish brown except tarsi and femoral-tibial articulations black.</p> <p>Sides of frontoclypeal shield slightly arcuate toward midline at frontoclypeal suture, narrowest part slightly past midlength of shield, at frontoclypeal suture.</p> <p>Short oblique carinae on the anterior 1/3 of the pronotum are well developed, but there is no indication of a midlongitudinal carina. Two short carinae and a distinct impression between carinae located on basal 1/2 of pronotum.</p> <p>Elytron with eight costae; fourth costa interrupted by strong punctures; fifth costa strongly bisinuate; sixth and seventh costae very indistinct. Two transverse ridges, one linking costae #3 and #5 (located just behind the humeral umbo), and one linking costae #5 and #8 (located at the sinuation dip of costa #5).</p> <p>Posterior 1/2 of metaventral tabella with closely spaced transverse grooves. Midlongitudinal groove in posterior 1/2 of metaventral tabella shallow, with ill-defined margins.</p> <p>Midlongitudinal carina of first abdominal ventrite is strong and extends length of ventrite.</p> <p>Male genitalia (Figs. 14, 15, 19) in lateral view slightly arcuate, aedeagal tips wide, apically rounded and with many pores (apparently without microsetae); in ventral view aedeagus nearly parallel-sided, with narrowed tips.</p> <p> <b>Remarks.</b> In the original description, Steffan (1973) stated that the holotype was deposited in the MNHN. However, MNHN collection staff were unable to find the type. Search at other museums determined that the holotype was still with the paratypes, at the MRAC. Having permission of that museum, the holotype (fragmentary; Fig. 6) and the permanent slide mounted male genitalia were transferred to the MNHN.</p> <p>In the original description (Steffan 1973), it is noted by the author that the head of the holotype is missing (“caput fehlt”). However, both the head and the prothorax are missing (Fig. 6). The two paratypes, both females, are from a different locality than the holotype (“Zentrales Hochland auf der Strecke Tananarie - Ambositra”). These paratypes are larger than the holotype and have some sculptural differences; they probably represent a different species.</p> <p>The original description gives “Cap Ambalasandra” as the type locality. Multiple searches online gave only one record with that geographical name, in a table in a paper on geological deposits. That locality is very near where the Mananara River enters the Indian Ocean (Fig. 38).</p> <p>Thirty-three larvae were collected in association with adults at site MAD 18-60.</p>Published as part of <i>Perkins, Philip D. & Bergsten, Johannes, 2019, New Myxophagan water beetles from Madagascar (Coleoptera: Torridincolidae, Hydroscaphidae), pp. 57-96 in Zootaxa 4657 (1)</i> on pages 64-67, DOI: 10.11646/zootaxa.4657.1.2, <a href="http://zenodo.org/record/3369801">http://zenodo.org/record/3369801</a>
Juan Steffan and his instrucción or method to learn english pronunciation
Get PDFEste trabajo busca poner en valor la figura de esos filólogos y maestros
de lenguas ingleses que favorecieron y potenciaron la enseñanza del inglés en España,
en particular la de Juan Steffan. Analizaremos su obra, el carácter didáctico de su
gramática y la importancia dada a la enseñanza de la pronunciación. El autor parte de
una reflexión general sobre el concepto de pronunciación para, a continuación, explicar
por orden alfabético de vocales y consonantes todos los sonidos del inglés y compararlos
con los españoles.This work aims to fulfil the role played by one of those English philologist
who aimed to foster the study of the English language in Spain, in this case Juan
Steffan. We focus in one element we consider of great importance the didactic character
of his grammar and the importance given to the teaching of pronunciation. The author
begins with a reflection upon the concept of pronunciation to follow explaining by
alphabetical order the vowel and consonant sounds of English and compare them with
Spanish
The Columbia River Treaty
Get PDFPolitical ScienceThe Columbia River Treaty is the largest international resource deal ever entered into by Canada. Much controversy still surrounds this agreement that was signed officially on January 17, 1961. The treaty has stirred up much thought and resentment in many people in Canada. What we can do now and in the future concerning the Columbia River Treaty, or deals like it, is what this term paper tries to explore
Seasonal frequency and positioning of parasitic midges (Chironomidae) on Pteronarcys biloba nymphs (Plecoptera: Pteronarcyidae)
No full textMature nymphs of Pteronarcys biloba collected from Catamaran Brook, New Brunswick, between October 1994 and October 1995, were hosts to high numbers of parasitic chironomid larvae [Nanocladius (Plecopteracoluthus) undescribed sp., nr, branchicolus]. Nanocladius (P.) sp. has a univoltine life cycle in Catamaran Brook, with emergence occurring nearly simultaneously with the stonefly host in late May and early June. The chironomid larva constructs a silken case on the stonefly nymphs and feeds on hemolymph by piercing the gill tissue or the intersegmental membranes. Stoneflies were collected from different habitat types in 4 stream reaches from the headwaters to the mouth, and the position and number of attached chironomids was recorded for each nymph. The frequency and density of parasitic chironomids was not related to habitat type, but was related to reach; significantly more larvae/host were found in mid-catchment reaches than at the headwaters or mouth (p < 0.05). No parasitized stoneflies were found in the headwater reach, but between 80 and 100% of mature stonefly nymphs collected from the mid-catchment and mouth reaches were parasitized. Mean chironomid densities ((x) over bar +/- SE) were 6.7 +/- 0.4 chironomids/mature host in the fail of 1994 and 3.5 +/- 0.44 in the summer and fall of 1995. Both frequency and density of chironomids were highest on the oldest stonefly age class present; younger stoneflies were also parasitized, but at significantly lower levels. Larval positioning on stoneflies differed with age of larvae; early instar chironomids attached mainly to the thoracic pleura, just under the wingpads, but most migrated to femora by early fall (September), and overwintered on the femora.PT: J; CR: BENEDICT PR, 1972, ANN ENTOMOL SOC AM, V65, P109 BOTTORFF RL, 1987, ENTOMOL GEN, V12, P97 CLAASEN PW, 1931, PLECOPTERA NYMPHS N CORBET PS, 1961, B ENTOMOL RES, V52, P695 CUNJAK RA, 1990, CANADIAN TECHNICAL R, V1751 CUNJAK RA, 1993, CANADIAN TECHNICAL R, V1914 DELAROSA CL, 1992, J N AMER BENTHOL SOC, V11, P316 DELATORREBUENO JR, 1978, GLOSSARY ENTOMOLOGY DOSDALL LM, 1981, CAN ENTOMOL, V113, P141 DOSDALL LM, 1986, CAN ENTOMOL, V118, P511 EPLER JH, 1995, J N AMER BENTHOL SOC, V14, P50 GOTCEITAS V, 1986, CAN J ZOOL, V58, P2260 HILSENHOFF WL, 1968, ANN ENTOMOL SOC AM, V61, P1622 HITCHCOCK SW, 1974, B STATE GEOLOGICAL 7, V107 JACOBSEN RE, 1993, CURRENT DIRECTIONS R, P317 SMITH LW, 1917, T ENTOMOLOGICAL SOC, V43, P433 STEFFAN AW, 1965, CAN ENTOMOL, V97, P1323 STEFFAN AW, 1967, NATURE, V213, P846 STEFFAN AW, 1967, SYMBIOSIS, V2, P207 STEWART KW, 1993, NYMPHS N AM STONEFLY SVENSSON B, 1976, ARCH HYDROBIOL, V77, P22 WHITE TR, 1980, ENTOMOL NEWS, V91, P69; NR: 22; TC: 7; J9: J N AMER BENTHOL SOC; PG: 8; GA: WC658Source type: Electronic(1
Precision Robotic Machining: Modelling and Control Innovations for Improved Performance
No full textRobotic manipulators have transformed numerous industries by automating many diverse processes. However, robotic machining has not been widely adopted in industry due to limited accuracy, low structural rigidity, difficulty localizing workpieces in the robot’s workspace, and slow cycle times due to high process complexity. This thesis aims to address these shortcomings by developing advanced modelling, control, and optimization techniques to improve the feasibility of robotic machining. A novel numerical inverse kinematics algorithm is introduced, the Quick Inverse Kinematics (QuIK) method, which notably improves reliability and reduces evaluation time for real-time applications. The advantages of this method allow the use of kinematically calibrated robot models for increased machining accuracy, without the associated reliability issues. A novel dynamic modelling method is also proposed, called Pseudo-Symbolic Dynamic Modelling (PSDM). The PSDM method simplifies derivation and calibration in dynamic modelling while drastically reducing evaluation times. The efficient model evaluation can be leveraged for fast, high-fidelity simulation, or enable the real-time use of nonlinear state estimation tools such as the extended or unscented Kalman filters, model-predictive control, or other advanced control methods that may improve robot performance in machining but otherwise be too computationally expensive. This thesis also proposes and tests an innovative novel neural-network-based numerical integration method called Neural Network Integration (NNI). This integration method allows for a pre-computation of certain types of integral problems and is proposed as a potential solution to resolve the computational limitations of on-the-fly robotic workspace optimization for machining applications. Finally, this thesis introduces and tests a novel control framework called Simultaneous Registration and Machining (SRAM) to more intelligently machine planar workpieces with uncertain registration. This framework refines the workpiece registration in real-time by leveraging measured force and position data, while simultaneously adaptively tuning a force controller for optimal behaviour based on path requirements. This framework is implemented in a custom, high-accuracy robotic machining workcell, developed within the current thesis, and shown to significantly improve path accuracy and contact stability in deburring applications while simultaneously reducing tool wear and allowing for improved cycle times and efficiency
DISTRIK MELINGKAR: Circular housing in Indonesia
No full textIndonesia is currently facing a housing deficit of 15 million units. In order to try and resolve this problem, 800.000 units of formal housing are being build every year and the most popular typology in this fast growing housing market is the Indonesian housing cluster. The goal within this project is to do a redesign of the housing cluster typology and create a sustainable neighbourhood using building principles derived from the learnings of circular economy.Architecture, Urbanism and Building Sciences | Explorela
Más allá de la jarana tradicional. Antropología. Boletín Oficial del Instituto Nacional de Antropología e Historia: Música tradicional y procesos de globalización. Num. 80 Nueva Época (2007) septiembre
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Reuter, Jas, La música popular de México. Origen e historia de la música que canta y toca el pueblo mexicano, México, Panorama Editorial, 1994.Robertson, Roland, “Glocalization. Time-space and homogeneity heterogeneity”, en Mike Featherstone, Scout Lass y Roland Robertson (eds.), Global modernities, Londres, Sage, 1995.Romero, Jesús, Daniel Pérez Ayala y Fernando Burgos Zamada, “Historia de la música”, en Enciclopedia yucatanense, t. IV, Mérida, Gobierno de Yucatán, 1977.Rosado Ojeda, Vladimiro, varios artículos (tipo físico, psíquico, organización social, religiosa, política, economía, música, literatura y medicina), en Enciclopedia yucatanense, t. II, Mérida, Gobierno de Yucatán, 1977.Sevilla, Amparo, Hilda Rodríguez y Elizabeth Cámara, Danzas y bailes tradicionales del estado de Tlaxcala, México, Premiá (La red de Jonás), 1983.Solano, Fernando, Raúl Cardiel Reyes, Raúl Bolaños Martínez, Historia de la educación pública, México, SEP/FCE, 1981.
Villa Rojas, Alfonso, Los elegidos de Dios, México, Conaculta/INI (Presencias), 1992.Wade, Peter, Music, race & nation: Tropical music in Colombia, Chicago, University of Chicago Press, 2000.Washabaugh,William, The passion of music and dance. Body, gender and sexuality, Oxford y Nueva York, Berg, 1998.Yúdice, George, Toby Millar, Política cultural, Buenos Aires, Gedisa, 2001
Design for immersion: A case study on creating an outdoor escape experience
No full textThe main goal of this thesis is answering the question: “How can immersion be achieved in an outdoor experience, using synergy between narrative, puzzles and location?”From literature research the following definition of immersion is formed: Immersion is a state where the interactor feels as if they were located in a different reality or world with an overarching specific theme. A narrative, interactions and location each contributes to this. To find out what the players experience during an escape room, two indoor games and two outdoor games are played and evaluated to see what does and does not work for their immersion. The main takeaway is that the narrative, and the interaction play a major part in immersion. After finding out what is considered immersive, an outdoor escape experience is built to function as a case study. Here, designs are tested and iterated upon to find out what improves players immersion even more. Two final tests are held to find out if the entire experience is as immersive as can be. From these tests conclusions will be drawn to see how each individual aspect of the experience influences the total experience. The conclusion of this thesis is that there is a synergy between narrative, puzzles and location. As having a location that fits the story, or the other way around, works great for storytelling and immersion levels. Also if the puzzles have a matching theme, Players experience more immersion, fun and excitement.Design for Interactio
Determination of Total Chromium in Tanned Leather Samples used in Car Industry
Get PDFDespite the high competition of synthetic fibers leather is nowadays still widely used for many applications. In order
to ensure a sufficient stability of the skin matrix against many factors, such as microbial degradation, heat and sweat, a
tanning process is indispensable. Using chromium (III) for this purpose offers a multitude of advantages, thus this way
of tanning is widely applied. During the use of chromium tanned leather as clothing material as well as for decoration/
covering purposes, chromium is extracted from the leather and may then cause nocuous effects to human skin, e.g.
allergic reactions. Thus the knowledge of the total chromium content of leather samples expected to come into prolonged
touch with human skin is very important. In car industry leather is used as cover for seats, steering wheel and gearshift
lever. The chromium contents of ten chromium tanned leather samples used in car industry were determined. First all
samples were dried at 65°C overnight and then cut in small pieces using a ceramic knife, weighed and analyzed by inductively
coupled plasma – optical emission spectrometry (ICP-OES) after acidic microwave assisted digestion. The total
chromium amounts found were in the range from 19 mg/g up to 32 mg/g. The extraction yield of chromium from leather
samples in sweat is approximately 2–7%. Thus especially during long journeys in summer chromium can be extracted in
amounts which may cause nocuous effects for example on the palm of the hands or on the back
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