On the sustainability of a monocentric city : lower transport costs from new transport facilities

This paper proposes a general equilibrium model of a monocentric city based on Fujita and Krugman (1995). Two rates of transport costs per distance and for the same good are introduced. The model assumes that lower transport costs are available at a few points on a line. These lower costs represent new transport facilities, such as high-speed motorways and railways. Findings is that new transport facilities connecting the city and hinterlands strengthen the lock-in effects, which describes whether a city remains where it is forever after being created. Furthermore, the effect intensifies with better agricultural technologies and a larger population in the economy. The relationship between indirect utility and population size has an inverted U-shape, even if new transport facilities are used. However, the population size that maximizes indirect utility is smaller than that found in Fujita and Krugman (1995).

Business Process Optimization in Madrid City Council.

While designing systems and products requires a deep understanding of influences that achieve desirable performance, the need for an efficient and systematic decision-making approach drives the need for optimization strategies. This paper provides the motivation for this topic as well as a description of applications in Computing Center of Madrid city Council. Optimization applications can be found in almost all areas of engineering. Typical problems in process, working with a database, arise in query design, entity model design and concurrent processes. This paper proposes a solution to optimize a night process dealing with millions of records with an overall performance of about eight times in computation time.

SMArc: a proposal for a smart, semantic middleware architecture focused on Smart City energy management

Among the main features that are intended to become part of what can be expected from the Smart City, one of them should be an improved energy management system, in order to benefit from a healthier relation with the environment, minimize energy expenses, and offer dynamic market opportunities. A Smart Grid seems like a very suitable infrastructure for this objective, as it guarantees a two-way information flow that will provide the means for energy management enhancement. However, to obtain all the required information, another entity must care about all the devices required to gather the data. What is more, this entity must consider the lifespan of the devices within the Smart Grid—when they are turned on and off or when new appliances are added—along with the services that devices are able to provide. This paper puts forward SMArc—an acronym for semantic middleware architecture—as a middleware proposal for the Smart Grid, so as to process the collected data and use it to insulate applications from the complexity of the metering facilities and guarantee that any change that may happen at these lower levels will be updated for future actions in the system.

Battles of Mexico, Mexico City, Mexico, 1847 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Battles of Mexico : survey of the line of operations of the U.S. Army under the command of Major General Winfield Scott on the 8th, 12th, & 13th Septr. 1847 made under the direction of Maj. W. Turnbull Topl. Engineers by Capt. McClellan & Lieut. Hardcastle, Topl. Engineers ; drawn by Capt. McClellan. It was published by Lit. de Salazar in 1847. Scale [ca. 1:15,900]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator (UTM Zone 14N, meters, WGS 1984) projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, built-up areas, selected buildings with names of landowners, drainage, canals, troop disposition, movements, and lines of defenses, fortifications, ground cover, and more. Relief shown by hachures. Includes also legend of troop movements, chart of "killed or wounded & missing 13th", and inset: "Worth's Command on 8th Sept."This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

Battles of Mexico, Mexico City, Mexico, 1848 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: Battles of Mexico : survey of the line of operations of the U.S. Army, under command of Major General Winfield Scott, on the 19th & 20th August & on the 8th, 12th & 13th September, 1847, made by Maj. Turnbull, Capt. McClellan & Lieut. Hardcastle, Topl. Engs. ; drawn by Capt. McClellan. It was published by C.B. Graham in 1848. Scale [ca. 1:31,680]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Universal Transverse Mercator (UTM Zone 14N, meters, WGS 1984) projected coordinate system. All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. This map shows features such as roads, built-up areas, selected buildings with names of landowners, drainage, canals, troop disposition, movements, and lines of defenses, fortifications, ground cover, and more. Relief shown by hachures and pictorially. Includes positions and numbers of troops, and casualty statistics for the battles of Contreras, Churubusco, Molino del Rey, and Chapultepec, and inset: Part of the Valley of Mexico. This layer is part of a selection of digitally scanned and georeferenced historic maps from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of originators, ground condition dates, scales, and map purposes.

The City school-tooth-clinic in Strassburg, Alsace and its activity : presented by the city of Strassburg to the visitors of the exposition ...

Also published in German as Die Städtische Schulzahnklinik in Strassburg im Elsass und ihre Tätigkeit : den Besuchern der Ausstellung überreicht von der Stadt Strassburg.

Beach changes at Atlantic City, New Jersey (1962-73) /

"March 1981."

Long-term effects of beach nourishment on the benthic fauna of Panama City Beach, Florida /

The long-term effects of beach nourishment on the benthic infauna and surface sediments of Panama City beaches were investigated. Forty-seven stations located on nine transects between West Pass and Philips Inlet, and two nourishment borrow sites were sampled in November-December 1979 and May 1980. The data collected were compared to prenourishment base-line information collected by Saloman (1976). Abiotic parameters, water temperature, dissolved oxygen and salinity were measured. Sediments were analyzed for particle-size distribution, percent organic carbon and percent carbonate. Benthic macroinvertebrates were represented by 162 taxa of 14 major animal phyla. Species composition and faunal densities varied seasonally. Polychaetes and amphipods were the most abundant animal groups; a small number of species were dominant at nearly all stations. Species diversity was lowest in the swash zone and sandbar stations and highest offshore. Sediment composition was similar to that of Saloman's (1976) study within limits of sampling and processing errors. Faunal composition was found to be different from 1976 but was attributed to normal seasonal and spatial variations. Based on benthic community analyses and sediment parameters, no significant differences were found between nourishment borrow sites and surrounding areas and in the nearshore areas where beach nourishment was conducted. No long-term adverse effects of beach nourishment were detected. (Author).

Benthic community response to dredging borrow pits, Panama City Beach, Florida /

This report gives biological and physical oceanographic data from baseline work, and studies of dredged and undredged sediments before and after dredging (9-meter contour) for beach nourishment at Panama City Beach, Florida. These studies were designed to show major short-term environmental effects of offshore dredging and included analyses of hydrology, sediments, and benthos. (Author).

Perspectives on nonpoint source pollution : proceedings of a national conference, Kansas City, Missouri, May 19-22, 1985.

Mode of access: Internet.

School desegregation in the St. Louis and Kansas City areas : metropolitan interdistrict options : a report /

Item 288-A

Sale of Carson City silver dollars by the General Services Administration : hearing before the Subcommittee on Consumer Affairs of the Committee on Banking, Finance, and Urban Affairs, House of Representatives, Ninety-sixth Congress, second session, August 19, 1980.

Mode of access: Internet.

Revenue sharing with the States : hearing before the Subcommittee on the City of the Committee on Banking, Finance and Urban Affairs, House of Representatives, Ninety-sixth Congress, first session, May 3, 1979.

"Serial no. 96-14."

The New York City infant day care study : a comparative study of licensed group and family infant day care programs and the effects of these programs on children and their families /

"Final report, grant MC-R-360011."