181,057 research outputs found
Long-Term Consequences of Congestion Pricing: A Small Cordon in the Hand Is Worth Two in the Bush
No full textWe evaluate and compare the long-term economic effects of three cordon-based road pricing schemes applied to the Washington, DC, metropolitan area. To conduct this analysis, we employ a spatially disaggregated general equilibrium model of a regional economy that incorporates the decisions of residents, firms, and developers, integrated with a spatially disaggregated strategic transportation planning model that features mode, time period, and route choice. We find that all cordon pricing schemes increase welfare of the residents, as well as lead to GDP growth. At the optimum, the larger cordon and a double cordon lead to higher benefits than the small cordon encompassing downtown core. Nevertheless, the small cordon seems to be a safer bet because when the toll charge is set suboptimally, the net benefits from the small cordon compared to the optimum change negligibly, while the net benefits from the larger cordon decline sharply as the charge deviates from the optimal level.traffic congestion, cordon tolls, land use, welfare analysis, road pricing, general equilibrium, simulation, Washington DC
North American import? Charting the origins of an enigmatic Trypanosoma cruzi domestic genotype.
No full textBACKGROUND: Trypanosoma cruzi, the agent of Chagas disease, is currently recognized as a complex of six lineages or Discrete Typing Units (DTU): TcI-TcVI. Recent studies have identified a divergent group within TcI - TcI(DOM). TcI(DOM). is associated with a significant proportion of human TcI infections in South America, largely absent from local wild mammals and vectors, yet closely related to sylvatic strains in North/Central America. Our aim was to examine hypotheses describing the origin of the TcI(DOM) genotype. We propose two possible scenarios: an emergence of TcI(DOM) in northern South America as a sister group of North American strain progenitors and dispersal among domestic transmission cycles, or an origin in North America, prior to dispersal back into South American domestic cycles. To provide further insight we undertook high resolution nuclear and mitochondrial genotyping of multiple Central American strains (from areas of México and Guatemala) and included them in an analysis with other published data. FINDINGS: Mitochondrial sequence and nuclear microsatellite data revealed a cline in genetic diversity across isolates grouped into three populations: South America, North/Central America and TcI(DOM). As such, greatest diversity was observed in South America (A(r) = 4.851, π = 0.00712) and lowest in TcI(DOM) (Ar = 1.813, π = 0.00071). Nuclear genetic clustering (genetic distance based) analyses suggest that TcI(DOM) is nested within the North/Central American clade. CONCLUSIONS: Declining genetic diversity across the populations, and corresponding hierarchical clustering suggest that emergence of this important human genotype most likely occurred in North/Central America before moving southwards. These data are consistent with early patterns of human dispersal into South America
Habitos y costumbres alimentarias de los estudiantes de la carrera de nutrición y gastronomía de la universidad Le Cordon Bleu Perú
No full textIn the present research of body mass index (BMI) were measured and food habits and practices of students in the careers of Nutrition and Food, University Le Cordon Bleu Peru met. It’s main objective was to make a comparison between food life style of students to do two samples of 12 students took career Kolmogorov and were applied to determine whether the distributions are normal in the samples, the test was applied Pearson to determine the correlation between variables and finally the Chi square and Spearman wereapplied to measure the independent variables were the final results no relationship between the lifestyles of students of both races but there is a tendency students have better nutrition food habit and habit that students cuisine. En el presente trabajo de investigación se midieron los índices de masas corporales (IMC) y se conocieron los hábitos y costumbres alimentarias de los estudiantes de las carreras profesionales de Nutrición y Gastronomía de la Universidad Le Cordon Bleu Perú. Se tuvo como objetivo principal realizar una comparación entre los estilo de vida alimentaria de los estudiantes para ello se tomó dos muestras de 12 estudiantes por carrera y se aplicaron las pruebas de Kolmogorov para determinar si las distribuciones son normales en las muestras, se aplicó la prueba Pearson para determiner la correlación entre las variables y por último se aplicaron las pruebas de Chi Cuadrado y Spearman para medir la independencia de las variables los resultados finales fueron que no hay relación entre los estilos de vida de los estudiantes de ambas carreras pero existe una tendencia que los estudiantes de nutrición tienen mejor costumbre y habito alimentario que los estudiantes de gastronomía
Echeveria flammigera Rosales-Martinez & Hernández-Campos 2023
No full text<p> <b> <i>Echeveria flammigera</i>:—</b> </p> <p> <b>MEXICO. Durango:</b> near Tayoltita, San Dimas, <i>R</i>. Spencer s.n. (HNT!); La Desmontada, 4.5 km al S, por el camino a Mala Noche, San Dimas, 2150 m, 7 March 1990, <i>M. González 2388</i> (MEXU!).</p>Published as part of <i>Rosales-Martínez, C. Santiago & Hernández-Campos, J. Daniel, 2023, Echeveria flammigera (Crassulaceae), a new name and status for E. pringlei var. parva, pp. 99-108 in Phytotaxa 592 (2)</i> on page 105, DOI: 10.11646/phytotaxa.592.2.3, <a href="http://zenodo.org/record/7840417">http://zenodo.org/record/7840417</a>
Urban Congestion Charging: Theory, Practice and Environmental Consequences
No full textThe theory of road pricing developed for single links suggests time andlocation varying charges equal to the marginal congestion cost at the efficientlevel of traffic. The second-best network counterpart is derived, but would beinfeasible to implement. Cordon tolls are feasible, and their optimal levelcomputed for eight towns. A cost-benefit study showed that with a suitablechoice of location, all schemes were socially profitable, though with widevariations across towns. The environmental benefits of cordon tolls aremeasured and shown to correlate with optimal congestion tolls, but to bemodest in size and not to affect the optimal toll.road traffic congestion, road pricing, congestion charging, cordontolls, environmental taxes.
El Tlacuache Núm. 340 (2008). 340 Año 9 (2008) noviembre. El Tlacuache
No full textChipilez, Síndrome de filiación cultural y su tratamiento en Coatetelco, Morelos por Nalleli Franco Mejía, Carolina Mendoza Rosales, Aidee Palacios Barrios, Ariana Rangel Oregon, Victoria Sandoval-Eslava. - Chipilez, Síndrome de filiación cultural y su tratamiento en Coatetelco, Morelos por Nalleli Franco Mejía, Carolina Mendoza Rosales, Aidee Palacios Barrios, Ariana Rangel Oregon, Victoria Sandoval-Eslava. - Patrimonio cultural en imágenes historia y fototeca
Editorial
No full textHace algún tiempo atrás surgió la idea de publicar una revista de divulgación científica relacionada con el ámbito educativo de la universidad Le Cordon Bleu, dando lugar a Hedypatheia, una revista que recoge el nombre de una obra escrita en poesía por el general Arquestrato, considerada como la primera publicación de la historia relacionada con la gastronomía y el “bien comer”, producto de la gran afición por la comida descrita por el autor en tono crítico durante sus viajes y travesías por el Mediterráneo en el siglo IV antes de Cristo
Graptopetalum trujilloi A. Vázquez & Rosales, sp. nov.
No full textGraptopetalum trujilloi A. Vázquez & Rosales sp. nov. (Figs. 3–5). Diagnosis:— Graptopetalum trujilloi is similar to G. rosanevadoense in sharing a ramose habit, smooth stem surface and stem diameter, but it differs from the latter in having a smaller habit 15.0–35.0 (–41.0) vs. 40.0–87.0 cm, more numerous primary branches per inflorescence 8–10 vs. 5–7, larger mean flower density per 10.0 cm of the scape 16–20 vs. 6–14, fewer flowers per basal branch 3–6 vs. 7–8, smaller flower diameter 12.9–13.1 vs. 14.9–15.1, petals greenish with transversal inconspicuous red stripes vs. yellowish with transversal conspicuous red stripes, petal width 2.7–2.8 vs. 2.9–3.0 mm, filaments greenish to distally red vs. red and carpels abaxially obtuse vs. rounded. It is also similar to G. superbum in sharing a ramose habit, similar rosette diameter and similar mean flower density per 10 cm of the scape, but it differs from the latter in having a smaller habit 15.0–35.0 (–41.0) cm vs. 40.0–80.0 cm, stem surface smooth vs. squamose, smaller stem diameter 6.0–8.0 mm vs. 10.0–12.0 mm, less numerous primary branches per inflorescence 8–10 vs. 12–15, and smaller flower diameter 12.9–13.1 vs. 15.0–16.0 mm. Type:— MEXICO, Jalisco: Municipio de San Gabriel, 4 km north of San Gabriel, Bosque de galería con Pittocaulon, Ficus, Salix. Abundante sobre laderas rocosas, 1350-1400 m, 19 April 2011, P. Carrillo-Reyes & J.M. Carrillo-García 6335 (holotype: IBUG!, Isotypes: CIMI!, ZEA!). Plants perennial, ramose, 15.0–35.0 (–41.0) cm tall without scape, branching basally; stems decumbent to pendant, surface smooth, brownish, 6.0–8.0 mm in diam. at the base, with oval to circular, bumped and dark greenish scars, 1.0–2.0 mm in diameter, the tip soon dried; each stem bearing a sparse terminal rosette 9.0–11.0 (–12.0) cm in diam.; leaves 15–32 per rosette, to 52 in cultivation, 4.0–7.5 × 2.3–2.8 cm, 6.0–9.0 mm thick, on an apical 4.0–7.0 cm stem, obovate, glabrous, base cuneate, adaxially slightly concave, abaxially convex, an apical mucro 1.0–3.0 × 1.0–3.0 mm, glaucous greenish to pinkish; scape 2.0–3.0 mm thick at the base, 1.0 mm thick on the upper part, gray-bluish to pinkish, mean flower density per 10 cm of the scape 16–20; panicle 15.0–32.0 cm long, dense, with 8–10 simple or bifurcate primary branches, with 30–50 flowers per inflorescence; bracts 1.0–3.0 mm long, lanceolate to elliptic; panicle primary branches 2.0–6.0 cm, simple or bifurcate, with 3–7 flowers each, 3–6 in the basal branch; pedicels 9.0–11.0 mm long; flowers 12.9–13.1 mm in diameter; petals (4–) 5, 2.7–2.8 mm wide, triangular, subequal, greenish with inconspicuous transversal red stripes, longitudinally with a shallow groove; stamens (4–) 5, erect in early stage of anthesis, later reflexed, filaments greenish to distally red; gynoecium yellow greenish to pinkish orange, carpels abaxially obtuse; fruits costate oblongoid, 5.0–6.0 × 2.0–3.0 mm; seeds unknown. Distribution, habitat and phenology:— Graptopetalum trujilloi is known only from populations at the type locality, on the canyon of the Rio Tapalpa at an elevation of 1350-1410 m. The vegetation corresponds to the tropical deciduous forest with Bursera sp., Heliocarpus sp., Isolatocereus dumortierii, Lysiloma sp., Pithecellobium dulce, Plumeria rubra, Pseudobombax sp., Verbesina oligantha, V. tecolotlana, and Vitex sp., among others. Plants form rock-dwelling dense colonies in North exposure vertical slopes along with Agave attenuata subsp. dentata, Astrolepis sinuata, Dioscorea sp., Epidendrum examinis, Euphorbia sp., Peperomia sp., Pitcairnia sp., Pittocaulon velatum Sedum chazaroi and Tillandsia aff. capitata (Fig. 5). Flowering in early March. Fruiting in early June. Eponymy and ethnobotany:—The specific epithet honours Jesús Trujillo Lara, an outstanding explorer of the Gran Barranca de Guadalajara and expert in succulent cultivation who contributed to the discovery of this species. Additional specimens examined:— MÉXICO, Jalisco: 4 km north of San Gabriel, 1390 m, 7 September 2008, J. A . Vázquez-García 8835, with J . Trujillo, J . Etter, M . Kristen and M . Cházaro (IBUG). Same location as previous, 4 km north of San Gabriel, 1410 m, 27 June 2021 (sterile), S . Rosales w/ C. Rosales and E. Martínez 1 (IBUG), same location as previous, 27 June 2021 (infructescence), S . Rosales w/ C. Rosales and E. Martínez 2 (IBUG).Published as part of Vázquez-García, J. Antonio, Rosales-Martínez, C. Santiago & Acevedo-Rosas, Raúl, 2022, Graptopetalum trujilloi (Crassulaceae), a new haplostemonous and critically endangered species endemic to western Mexico: comments on taxa of subg. Glassia, pp. 275-287 in Phytotaxa 532 (3) on page 282, DOI: 10.11646/phytotaxa.532.3.5, http://zenodo.org/record/596468
La ruta de la uva y el origen del pisco: del Jardín de las Hespérides a las viñas del Perú
No full textEsta publicación digital de la Universidad Le Cordon Bleu cuenta el recorrido que siguió la vid a lo largo de la historia hasta su llegada al Perú en la primera mitad del siglo XVI dando lugar a la creación de viñedos, la producción de vino y el origen del pisco, una bebida espirituosa que se obtiene a través de un tradicional proceso de destilación del mosto de la uva en las costas del Perú, y cuyo nombre hace referencia al puerto donde se produce y a los contenedores que permitieron su exportación a varios continentes alcanzando una gran reconocimiento en el mundo por su extraordinaria calidad y forma tradicional de producción que, hasta estos días, se realiza con especial cuidado y dedicación por parte de los productores peruanos en las regiones que cuentan con la denominación de origen pisco
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