The processes of airline operational control

January 1995Includes bibliographical references (p. 97-98)The airline industry has undergone many drastic changes in the way operations are conducted since the Airline Deregulation Act of 1978. The Federal Aviation Administration of the Department of Transportation, however, has not fully kept up with these changes. This has created tension between the airlines and the FAA, who, responsible for providing air traffic control and management, is using decades old technology and procedures to handle modern day problems. This thesis details the process of building and implementing an airline schedule. This is based on interviews with several major US airlines. Particular attention is paid to the day to day running of the airline at the Airline Operations Control Center. Several areas are identified where the FAA can provide better ATC service to the airlines, and to the traveling public. These areas include more lenient rules for swapping ground delay program slots, including slot sale, and new tools to make more efficient use of the national air space

Ambitious environmental and economic goals for the future of agriculture are unequally achieved by innovative cropping systems

International audienceAgriculture has to face huge challenges in the decades ahead. Four innovative cropping systems were assessed ina “cropping system experiment” in the Ile-de-France region (France) from 2009 to 2014. Three were designed tomeet ambitious goals: the total elimination of pesticides (No-Pest), reducing fossil energy consumption by 50%(L-EN), or decreasing greenhouse gas (GHG) emissions by 50% (L-GHG). They were also required to satisfy awide range of environmental criteria and to maximize yields whilst respecting the major constraint on the systemand the environmental targets set. A fourth system (PHEP), in which the environmental and yield targets wereachieved with no major constraint, was also assessed. After completion of the first full crop sequence for theseinnovative systems, the results obtained indicated that it was possible to design and implement innovativesystems achieving multiple goals. In our field trial conditions, the pesticide and energy constraints were almostsatisfied, whereas the GHG target was missed by a considerable margin. All four innovative systems satisfiedenvironmental criteria in terms of N management, pesticide use, energy consumption and crop diversity.However, herbicide treatment frequency index (TFIH) was higher than expected in the two systems with no-plowpractices, L-EN and L-GHG. In the pesticide-free system, soil organic matter content was lower than expected,due to frequent plowing (every 2 years) and low residue levels as a result of the lower yields obtained. Yieldswere lower for the L-EN system than for the reference system, and yield was variable in the L-GHG system. Theseinnovative systems had better environmental performances than the systems currently used in the Ile-de-Franceregion, with no decrease in gross margins

Experiencias comparativas en el cultivo de la avena empleando el nitrato de sosa, el sulfato de amoníaco y la sangre desecada : resumen de los resultados obtenidos en veintiún departamentos de Francia empleando simultáneamente el nitrato de sosa y los abonos fosfatados

Nombre del trad. obtenido del final del text

Presentations from the annual meeting of the MIT/Industry Cooperative research Program.

Caption titleMay 199

[Cuestiones de abonos]

Obra facticia que contiene: Del aprovechamiento para abono agrícola de los grandes depósitos de hueso enterrado descubiertos en Castilla La Mancha : apuntes acerca de la facultad fertilizante del fosfato de cal, y acerca de los abonos químicos con él fabricados / por Diego López de Quintana. -- Madrid : Imp. de J.M. Lapuente, 1876. -- 44, VIII p. -- Abonos agrícolas : memoria presentada á la Real Sociedad Económica Aragonesa de Amigos del País... / de su autor José Alloza y Temprado. -- Zaragoza : Imp. del Hospicio Provincial, 1888. -- 67, VIII p. -- Elaboración de abonos económicos con destino á los principales cultivos : memoria exponiendo medios seguros para que los agricultores... / por Enrique Sagols y Ferrer. -- Zaragoza : Imp. del Hospicio Provincial, 1988. -- 73 p. -- Indice -- Experiencias comparativas en el cultivo de la Avena empleando el Nitrato de sosa, el sulfato de amoniaco y la sangre desecada : resumen de los resultados obtenidos en veintiún departamentos de Francia... / por D.L. Grandeau. -- Londres : Permanent Nitrate Comité, 1897. -- 15, VIII p. -- Abonos para agricultura : apuntes para un libro / por Juan Juste y Cararach. -- Zaragoza : Imp. del Hospicio Provincial, 1888. -- 128 p., [2] h. de lám

[Cuestiones de abonos]

Contiene: Del aprovechamiento para abono agrícola de los grandes depósitos de hueso enterrado descubiertos en Castilla La Mancha : apuntes acerca de la facultad fertilizante del fosfato de cal, y acerca de los abonos químicos con él fabricados / por Diego López de Quintana. -- Madrid : Imp. de J.M. Lapuente, 1876. -- 44, VIII p. -- Abonos agrícolas : memoria presentada á la Real Sociedad Económica Aragonesa de Amigos del País... / de su autor José Alloza y Temprado. -- Zaragoza : Imp. del Hospicio Provincial, 1888. -- 67, VIII p. -- Elaboración de abonos económicos con destino á los principales cultivos : memoria exponiendo medios seguros para que los agricultores... / por Enrique Sagols y Ferrer. -- Zaragoza : Imp. del Hospicio Provincial, 1988. -- 73 p. -- Indice -- Experiencias comparativas en el cultivo de la Avena empleando el Nitrato de sosa, el sulfato de amoniaco y la sangre desecada : resumen de los resultados obtenidos en veintiún departamentos de Francia... / por D.L. Grandeau. -- Londres : Permanent Nitrate Comite, 1897. -- 15, VIII p. -- Abonos para agricultura: apuntes para un libro / por Juan Juste y Cararach. -- Zaragoza : Imp. del Hospicio Provincial, 1888. -- 128 p., [2] h. de lám.Enc. cartonéEnc. varias obras formando un vol. facticioNota ms sueltaSello en guarda : Encuadernador Cayetano Fernández, ZaragozaTít. tomado del lom

Rapport sur le cours de chimie agricole professé en 1868 à la faculté des sciences de Nancy et sur l'organisation de la Station d'essais agricoles de l'Est

Grandeau Louis. Rapport sur le cours de chimie agricole professé en 1868 à la faculté des sciences de Nancy et sur l'organisation de la Station d'essais agricoles de l'Est. In: Bulletin administratif de l'instruction publique. Tome 10 n°189, 1868. pp. 511-519