[Cadastral map of the blocks surrounding Washington Circle, Washington D.C.].

Cadastral map of area bounded by 24th, L. 22nd, and I streets N.W.

Plan of the city north of K Street next the Creek (R) : [West End, N.W. Washington D.C.].

Shows block numbers and dimensions.

Plan shewing the present & proposed direction of the Canal between 3d & Seventh streets : [Washington D.C.] /

Oriented with north to the left.

[Cadastral map of part of the West End, Washington D.C.].

Cadastral map showing unidentified tinted lots, lot numbers, and block numbers.

Plan of basin between 12 & 10th streets as laid out for the Canal Co. : [Washington Canal, Washington D.C.].

Also covers part of central business district adjacent to canal.

"Jazz is Back": Alternative Jazz Venues and Gentrification in Washington, D.C.

Gentrification has dramatically changed the urban landscape of Washington, D.C. Non-profit alternative jazz venues have become important sites for negotiating this complex process that is re-shaping the city. Each such venue aligns itself with one of the two primary factions of gentrification: new urban migrants or long-term residents. Westminster Presbyterian Church’s Jazz Night in Southwest fosters a community of repeat-attendees resisting social displacement. The Jazz and Cultural Society unabashedly foregrounds ties to long-term residents in highlighting a black identity and its local interconnectedness. CapitolBop’s Jazz Loft demonstrates the difficulties that come with trying to cater to a young audience, and at the same time, resist gentrification. These venues present three perspectives on gentrification and together bring light to the overlapping complexity of gentrification.

[Route from Washington, D.C. to Old Pohick Church, Accotink, Virginia].

Shows distances from the White House at selected points.

Plan of the town of Alexandria, D.C. with the environs : exhibiting the outlet of the Alexandria Canal, the shipping channel, wharves, Hunting Cr. &c. /

Relief shown by hachures. Depths shown by contours.

THE INFLUENCE OF URBAN FORM AT DIFFERENT GEOGRAPHICAL SCALES ON TRAVEL BEHAVIOR; EVIDENCE FROM U.S. CITIES

Suburban lifestyle is popular among American families, although it has been criticized for encouraging automobile use through longer commutes, causing heavy traffic congestion, and destroying open spaces (Handy, 2005). It is a serious concern that people living in low-density suburban areas suffer from high automobile dependency and lower rates of daily physical activity, both of which result in social, environmental and health-related costs. In response to such concerns, researchers have investigated the inter-relationships between urban land-use pattern and travel behavior within the last few decades and suggested that land-use planning can play a significant role in changing travel behavior in the long-term. However, debates regarding the magnitude and efficiency of the effects of land-use on travel patterns have been contentious over the years. Changes in built-environment patterns is potentially considered a long-term panacea for automobile dependency and traffic congestion, despite some researchers arguing that the effects of land-use on travel behavior are minor, if any. It is still not clear why the estimated impact is different in urban areas and how effective a proposed land-use change/policy is in changing certain travel behavior. This knowledge gap has made it difficult for decision-makers to evaluate land-use plans and policies. In addition, little is known about the influence of the large-scale built environment. In the present dissertation, advanced spatial-statistical tools have been employed to better understand and analyze these impacts at different scales, along with analyzing transit-oriented development policy at both small and large scales. The objective of this research is to: (1) develop scalable and consistent measures of the overall physical form of metropolitan areas; (2) re-examine the effects of built-environment factors at different hierarchical scales on travel behavior, and, in particular, on vehicle miles traveled (VMT) and car ownership; and (3) investigate the effects of transit-oriented development on travel behavior. The findings show that changes in built-environment at both local and regional levels could be very influential in changing travel behavior. Specifically, the promotion of compact, mixed-use built environment with well-connected street networks reduces VMT and car ownership, resulting in less traffic congestion, air pollution, and energy consumption.

Map of Milwaukee County and plans of Pewaukee, Oconomowoc, Wauwatosa, Waukesha /

Includes index.

PHYTOPLANKTON AND NUTRIENT DYNAMICS WITH A FOCUS ON NITROGEN FORM IN THE ANACOSTIA RIVER, IN WASHINGTON, D.C. AND WEST LAKE, IN HANGZHOU, CHINA

Nutrient loading has been linked with severe water quality impairment, ranging from hypoxia to increased frequency of harmful algal blooms (HABs), loss of fisheries, and changes in biodiversity. Waters around the globe are experiencing deleterious effects of eutrophication; however, the relative amount of nitrogen (N) and phosphorus (P) reaching these waters is not changing proportionately, with high N loads increasingly enriched in chemically-reduced N forms. Research involving two urban freshwater and nutrient enriched systems, the Anacostia River, USA, a tributary of the Potomac River feeding into the Chesapeake Bay, and West Lake, Hangzhou, Zhejiang Province, China, was conducted to assess the response of phytoplankton communities to changing N-form and N/P-ratios. Field observations involving the characterization of ambient phytoplankton communities and N-forms, as well as experimental (nutrient enrichment) manipulations were used to understand shifts in phytoplankton community composition with increasing NH4+ loads. In both locations, a >2-fold increase in ambient NH4+:NO3- ratios was followed by a shift in the phytoplankton community, with diatoms giving way to chlorophytes and cyanobacteria. Enrichment experiments mirrored this, in that samples enriched with NH4+ lead to increased abundance of chlorophytes and cyanobacteria. This work shows that in both of these systems experiencing nutrient enrichment that NH4+ supports communities dominated by more chlorophytes and cyanobacteria than other phytoplankton groups.

Anopheles darlingi polytene chromosomes: revised maps including newly described inversions and evidence for population structure in Manaus

Salivary gland polytene chromosomes of 4th instar Anopheles darlingi Root were examined from multiple locations in the Brazilian Amazon. Minor modifications were made to existing polytene photomaps. These included changes to the breakpoint positions of several previously described paracentric inversions and descriptions of four new paracentric inversions, two on the right arm of chromosome 3 and two on the left arm of chromosome 3 that were found in multiple locations. A total of 18 inversions on the X (n = 1) chromosome, chromosome 2 (n = 7) and 3 (n = 11) were scored for 83 individuals from Manaus, Macapá and Porto Velho municipalities. The frequency of 2Ra inversion karyotypes in Manaus shows significant deficiency of heterozygotes (p < 0.0009). No significant linkage disequilibrium was found between inversions on chromosome 2 and 3. We hypothesize that at least two sympatric subpopulations exist within the An. darlingi population at Manaus based on inversion frequencies.

Design of bicycling suitability maps for hilly cities

Post-print version. Pictures and tables separated from main text and presented at the end.

A travel-guidance engine for visually impaired people

Fino a pochi anni fa, usare i trasporti pubblici poteva essere fonte di confusione e richiedere la comprensione del sistema dei trasporti locali. Più tardi, con la diffusione di dispositivi con localizzazione GPS, reti dati cellulare e Google Maps (inizialmente Google Transit), tutto è cambiato, rendendo possibile la pianificazione di un viaggio mentre si è fuori casa. Nonostante Google Maps disponga di indicazioni stradali più o meno in tutto il mondo e mostri molte informazioni, alcune funzionalità, come l’integrazione degli orari in tempo reale, non sono disponibili in tutte le città, ma sono basate su accordi con le agenzie dei trasporti locali. GoGoBus è un’applicazione Android per l’ausilio al trasporto nella città di Bologna. Combinando diversi servizi, GoGoBus si rivolge a svariati tipi di utilizzatori: offre la pianificazione per i meno pratici del sistema e coloro che usano i trasporti pubblici raramente, dispone di orari in tempo reale per chi usa i mezzi frequentemente, e in più traccia la posizione dell’autobus, ha un supporto vocale e un’interfaccia semplice per persone con disabilità. Progettata appositamente per ipovedenti, l’aspetto più innovativo dell’applicazione è il suo supporto durante il percorso sull’autobus, integrato alla pianificazione del tragitto e agli orari aggiornati in tempo reale. Il sistema traccia la posizione dell’autobus attraverso il GPS del dispositivo mobile, la cui posizione è usata sia per riconoscere quando una fermata viene superata, sia per mostrare informazioni utili come la distanza dalla prossima fermata, il numero di fermate e i minuti rimanenti prima di scendere, e soprattutto notificare l’utente quando deve scendere. L’idea dietro GoGoBus è incrementare la fruibilità dei trasporti pubblici per non vedenti, ma anche per persone che li usano di rado, aumentando ampiamente la loro indipendenza, allo stesso tempo migliorando la qualità del servizio per chi usa i mezzi quotidianamente.

Plan de mejoramiento a la Supply Chain de BCD TRAVEL Colombia

Mediante el acercamiento que se hizo al área corporativa de BCD TRAVEL COLOMBIA y considerando el importante crecimiento actual del Sector Turismo y más precisamente de los viajes con motivo corporativo en el país, surge la necesidad del presente trabajo. Al hacer un análisis interno en la organización y de su entorno, se evidenció que la compañía tiene carencia en procesos y establecimiento de nuevas estrategias que le permitan identificar y potencializar oportunidades en su mercado objetivo y en torno a sus clientes y proveedores, lo cual, puede amenazar y comprometer la estabilidad y prestigio de empresa y así mismo su perdurabilidad. Se elaborará un propuesta de mejora en torno a el área de mercadeo y de logística con el fin de estructurar herramientas que le permitan a la compañía tener un horizonte definido, conocer su posición estratégica en el mercado actual, a donde quiere llegar y que debe hacer para lograr los objetivos establecidos en su unidad de negocio corporativa, la cual representa el mayor porcentaje de ingresos para la compañía. . Se espera que los planes de mejora y estrategias establecidas generen servicios de valor agregado e impacten positivamente a lo largo de la cadena de suministro logrando mayor rentabilidad, competitividad y seguimiento de todos los procesos de esta unidad de negocio.