213 research outputs found

    Energy managed reporting for wireless sensor networks

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    In this paper, we propose a technique to extend the network lifetime of a wireless sensor network, whereby each sensor node decides its individual network involvement based on its own energy resources and the information contained in each packet. The information content is ascertained through a system of rules describing prospective events in the sensed environment, and how important such events are. While the packets deemed most important are propagated by all sensor nodes, low importance packets are handled by only the nodes with high energy reserves. Results obtained from simulations depicting a wireless sensor network used to monitor pump temperature in an industrial environment have shown that a considerable increase in the network lifetime and network connectivity can be obtained. The results also show that when coupled with a form of energy harvesting, our technique can enable perpetual network operatio

    Nesochlamys capensis Locker, sp. nov.

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    Nesochlamys capensis Löcker, sp. nov. (Figs 8 A–C, 18) Types. Holotype 3, AUSTRALIA, Qld: 3 km W of Cape Tribulation, 500 m, 20.ix.– 7.x. 1982 (Monteith, Yeates & Thompson) (QM T. 156365). Paratype, Qld: 1 3, 4 km W of Cape Tribulation, 720 m, baited flight trap, rainforest, 23.ix.– 7.x. 1982 (Monteith, Yeates & Thompson) (QM). Etymology. Named after the type locality, Cape Tribulation. Colour. Vertex light brown near basal emargination, mid brown apically. Face mid brown, carinae concolorous, except for pale lateral carinae of frons. Pronotum light brown, mesonotum dark brown. Forewings hyaline colourless with some light to mid brown patches; veins and tubercles concolorous with cells; apical parts of veins near pterostigma darkened; pterostigma light brown. Abdomen light to mid brown. Legs light brown, femora slightly darker. Morphology. Body length: 3 3.6–3.9 mm. Head: Vertex 0.7 times as wide as long; with median carina covering 1 / 2–3 / 4 of length of vertex. Frons 1.3–1.4 times longer than wide. Rostrum not reaching hind coxae. Thorax: Forewing with about 15 tubercles on costa; Sc+R forking basad of fork CuA 1 +CuA 2; position of crossvein R-M distad or at same level as fork MA-MP; RP apically trifid; apical cells 10. Hind leg: 1 st tarsomere with 6 apical teeth; 2 nd tarsomere with 6 (rarely 7) apical teeth and three very fine setae. Male genitalia: Anal tube as in Figs 18 B, 18 C. Genital styles (Figs 18 D, E) apically with numerous fine setae. Ventromedian process of pygofer trapezoid (Fig. 18 D). Aedeagus (Fig. 18 A): phallotheca left laterally with long spine (a), inserted near apex and bifurcated spine (b) with branches of unequal length; ventrally with long, flattened spine (c) directed cephalad. Flagellum without spines. Remarks. This species can be distinguished from the other Australian species of Nesochlamys by the arrangement of spines on the aedeagus (two single spines and one bifurcated spine with branches of unequal length as in Fig. 18 A).Published as part of Löcker, Birgit, Fletcher, Murray J. & Gurr, Geoff M., 2010, Taxonomic revision of the Australian Eucarpiini (Hemiptera: Fulgoromorpha: Cixiidae) with the description of nine new species, pp. 1-31 in Zootaxa 2425 on page 20, DOI: 10.5281/zenodo.19460

    Enforcing reputation constraints on business process workflows

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    The problem of trust in determining the flow of execution of business processes has been in the centre of research interst in the last decade as business processes become a de facto model of Internet-based commerce, particularly with the increasing popularity in Cloud computing. One of the main mea-sures of trust is reputation, where the quality of services as provided to their clients can be used as the main factor in calculating service and service provider reputation values. The work presented here contributes to the solving of this problem by defining a model for the calculation of service reputa-tion levels in a BPEL-based business workflow. These levels of reputation are then used to control the execution of the workflow based on service-level agreement constraints provided by the users of the workflow. The main contribution of the paper is to first present a formal meaning for BPEL processes, which is constrained by reputation requirements from the users, and then we demonstrate that these requirements can be enforced using a reference architecture with a case scenario from the domain of distributed map processing. Finally, the paper discusses the possible threats that can be launched on such an architecture

    Bajauana acuminata Locker, sp. nov.

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    Bajauana acuminata Löcker, sp. nov. (Figs 2, 12) Types. Holotype 3, AUSTRALIA, Qld: 26 km up Tinaroo Ck Rd via Mareeba, 29.ix.– 11.xi. 1983 (Storey & Brown) (QM T. 156363, originally from QDPI). Paratypes, Qld: 1 Ƥ, Kuranda Range State Forest, 20.iv. 1967 (D.H. Colless) (ANIC); 1 Ƥ, Lambs Head (East End), 17 º02’S 145 º 40 ’E, 1180 m, pyrethrum, trees & logs, 29.xi. 1993 (Monteith & Janetzki) (QM); 1 Ƥ, Massey Ra., 6 km NW of Bellenden Ker, 17 º 14 ’S 145 º 48 ’E, 1150 m, pyrethrum, 11.x. 1991 (Monteith & Janetzki) (QM); 1 Ƥ, Crawford’s Lookout, Palmerston Nat. Pk., 1.iv. 1976 (I.D. Galloway) (QDPI); 1 Ƥ, GS 1 Mt Haig, 17.06 S 145.36 E, 1150 m, malaise trap, 29.ix.– 31.x. 1995 (L. Umback) (ANIC). Etymology. The Latin term ‘ acuminatus ’ means ‘pointed’. Named after the pointed tips of the flagellum. Colour. Head light brown to mid brown, carinae paler, apex of rostrum dark brown. Pro- and mesonotum light brown to mid brown, carinae paler. Forewings hyaline with numerous brown marks scattered over forewing, mainly along veins; veins and tubercles concolorous with cells; pterostigma light brown, sometimes with brown marks. Abdominal sternites mid to dark brown. Legs light brown. Morphology. Body length: 3 4.2 mm; Ƥ 4.3–4.8 mm. Head: Vertex 2.0 times wider than long; with indistinct median carina, covering 3 / 4 of length of vertex. Frons 1.1 times longer than wide; median carina incomplete, covering more than 3 / 4 of length of frons. Thorax: Forewing 2.5 times longer than wide; with 28–29 tubercles on costa; position of crossvein R-M basad of fork MA-MP. Hind leg: 2 nd tarsomere with 7 apical teeth and three very fine setae. Male genitalia: Anal tube as in Figs 12 C, D. Genital styles as in Figs 12 E, F. Ventromedian process of pygofer triangular as in Fig. 12 E. Aedeagus as in Figs 12 A, B. Phallotheca ventrally with long, straight spine (a) inserted at apex of phallotheca. Flagellum with several, more or less sclerotised, pointed tips.Published as part of Löcker, Birgit, Fletcher, Murray J. & Gurr, Geoff M., 2010, Taxonomic revision of the Australian Eucarpiini (Hemiptera: Fulgoromorpha: Cixiidae) with the description of nine new species, pp. 1-31 in Zootaxa 2425 on page 6, DOI: 10.5281/zenodo.19460

    Comparing estimates of actual evapotranspiration from satellites, hydrological models, and field data: a case study from Western Turkey

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    Evapotranspiration / Estimation / Remote sensing / Satellite surveys / Field tests / Measurement / Productivity / Crops / Water requirements / Water balance / Irrigation management / River basins / Hydrology / Models / Turkey / Gediz River

    Ozoliarus alces Locker 2006, sp. nov.

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    <i>Ozoliarus alces</i> Löcker, sp. nov. <p>(Figs 23E–H, 44J–P)</p> <p> <i>Type material</i></p> <p> <i>Holotype</i>, ♂, <b>AUSTRALIA, Qld:</b> Mt Robert, 5 km SW, 21.24S 148.27E, 300 m, mv light, brigalow, 23.x.2000 (S. Wright) (QM QMT123827), <i>Paratypes</i>, AUSTRALIA, Qld: 1 ♀, same data as holotype (QM), 1 ♀, same data as holotype, pitfall trap, 22.x.–18.xii.2000 (Cook, Monteith) (QM), 1 ♂, Brigalow Res. Stn, 24.48S 149.47E, 170 m, pyrethrum, brigalow trunks, 12.x.2001 (Monteith, Burwell) (QM), 2 ♀, Brigalow Res. Stn, 24.49S 149.45E, 170 m, pyr. trunks, logs, 12.x.2001 (Burwell, Monteith) (QM), 1 ♀, same data, vine scrub (QM), 1 ♂, Mitchell District, ix.1942 (N. Geary) (AMS), 1 ♂, 6.5 km S Moonie, 27.46S 150.21E, on <i>Wahlenbergia</i>, 20.ix.1991 (G. Daniels) (UQIC).</p> <p> <i>Etymology</i></p> <p> Named after a spine on the phallotheca which is shaped like the large palmate antlers of the male elk (<i>Alces alces</i> Linnaeus).</p> <p> <i>Colour</i></p> <p>Body mid to dark brown, carinae and clypeus paler, frons lateral with a white mark; legs mid brown; forewing hyaline colourless with brown marks along crossveins, veins dark brown, tubercles concolorous with veins, pterostigma dark brown; abdominal sternites dark brown.</p> <p> <i>Morphology</i></p> <p>Body length: ♂ 7.5–7.7 mm, ♀ 8.0– 9.3 mm.</p> <p>Head: Vertex (total length) 1.5–1.9 times longer than wide; basal emargination acutely angled or rectangular. Postclypeus with well­developed (rarely evanescent) median carina. Rostrum surpassing hind coxae.</p> <p>Thorax: Hind margin of pronotum obtusely angled. Mesonotum with well­developed carinae. Forewing 3.0–3.1 times longer than wide; costa with 21–33 tubercles; 9 apical cells.</p> <p>Male genitalia: Anal tube as in Figs 44N–P; pygophore and genital styles as in Figs 44L–M. Aedeagus (Figs 44J–K): Phallotheca with a rounded spine (a) left lateral; a rounded spine (b) pointing upwards (caudad) right lateral; a large, flattened, bifurcated spine (c) dorsal, shaped like antlers of male elk; and a large, rounded ventral ridge. Flagellum partly sclerotised with a long spine.</p>Published as part of <i>Löcker, Birgit, Fletcher, Murray J., Larivière, Marie-Claude & Gurr, Geoff M., 2006, The Australian Pentastirini (Hemiptera: Fulgoromorpha: Cixiidae), pp. 1-138 in Zootaxa 1290 (1290)</i> on page 7

    Longitudinal patterns of behavioral, emotional, and social difficulties and self-concept in adolescents with a history of specific language impairment

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    Purpose: This study explored the prevalence and stability of behavioral difficulties and self-concepts between 8 and 17 years in a sample of children with a history of specific language impairment (SLI). We investigated whether earlier behavioral, emotional and social difficulties (BESD), self-concepts, language, and literacy abilities predicted behavioral difficulties and self-concepts at 16/17 years. Method: In this prospective longitudinal study, 65 students were followed up with teacher behavior ratings and individual assessments of language, literacy, and self-concepts at 8, 10, 12, 16, and 17 years. Results: The students had consistently higher levels of five domains of BESD, which had different trajectories over time, and poorer scholastic competence, whose trajectory also varied over time. Earlier language ability did not predict later behavioral difficulties or self-concepts but the prediction of academic self-concept at 16 by literacy at 10 years approached significance. Conclusions: We demonstrate the importance of distinguishing domains of behavioral difficulties and self-concept. Language, when measured at 8 or 10 years, was not a predictor of behavior or self-concepts at 16 years, or of self-concepts at 17 years. The study stresses the importance of practitioners addressing academic abilities and different social-behavioral domains in delivering support for adolescents with SLI
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