The Racer

Constructed by owner George Boeckling along the Cedar Point beach in 1902, the Racer was his first roller coaster. It was manufactured by the Ingersoll Company of Pittsburgh, Pennsylvania. The coaster reached a height of 46 feet. In 1906, when this picture was taken, a ride on the Racer cost five cents.

G. A. Boeckling Steamer

The "G. A. Boeckling" carried visitors to and from Cedar Point from 1909 to 1952. After her service ended, she became a floating warehouse in Wisconsin. In 1983, a group of Sandusky, Ohio residents purchased her. While undergoing restoration at Toledo, Ohio in 1989, she was destroyed by fire.

Checker Convention

In the summer of 1936, Cedar Point hosted a convention and competition of the nation's premier checker players. Note the formal dress of the checker players.

Cedars Hotel

The Cedars Hotel opened on the Bay side of Cedar Point in 1915. It incorporated the original White House Hotel. It featured 270 guest rooms, a cafeteria, and a gift shop as well as areas with wicker chairs and writing tables.

Rotunda of the Breakers Hotel

The five-story Rotunda of the lobby of the Breakers Hotel provided a place for guests to relax and enjoy the hotel. Wicker furniture was imported from Europe. The Rotunda was also the scene of entertainment including impromptu concerts from Metropolitan Opera stars such as Enrico Caruso, who stopped at Cedar Point on their way to Chicago for the Met's summer season.

Foot of Columbus Avenue, Sandusky, Ohio

The foot of Columbus Avenue in Sandusky, Ohio was the location of Lake Erie steamer service during the years from 1870 to 1930. As this picture shows hundreds of men and women have arrived and parked their automobiles and are preparing to board steamers for Lakeside, Kelleys Island, Cedar Point, and South Bass Island.

Area wage survey.

1981- : 21 x 28 cm.

Occupational compensation survey--pay only.

Title from caption.

Los cambios en la política de formación patrimonial de la oligarquía de Sevilla a fines de la Edad Media. El ejemplo de una familia de jurados

A fines del siglo XV, la introducción de nuevos miembros en el grupo oligárquico sevillano, cuando los esquemas de reparto de propiedad ya se habían consolidado, propiciará cambios importantes en la política de formación patrimonial de este grupo social tan singular como característico de la sociedad sevillana de la Baja Edad Media. En este trabajo se analiza este fenómeno a través de una familia de jurados. Con un patrimonio fundiario que ya no tiene como base el olivar y en el que se emplean nuevos sistemas de explotación, esta familia deberá hacer frente, además, a las graves coyunturas que el campo andaluz sufre en las primeras décadas del siglo XVI. Todo un ejemplo de intento de adaptación a una nueva época por parte de un grupo que siempre se caracterizó por su dinamismo económico.

Ecological infrastructures in sustainable olive growing: studies about Prays oleae (Bernard) and its natural enemies

Doutoramento em Engenharia Agronómica - Instituto Superior de Agronomia - UL

Age and growth of the undulate ray, Raja undulata, in the Algarve (southern Portugal)

Aspects of the population dynamics of the undulate ray, Raja undulata (Chondrichthyes: Rajidae), one of the more abundant elasmobranch fish captured along the Portuguese south coast (Algarve), were studied for the first time. Some traditional elasmobranch vertebral enhancing techniques were compared and the most precise for this species determined to be the cedar wood oil immersion and the alizarin red S stain. The sample consisted of 14 age-classes, with age-classes 3 to 8 being the most represented. Evidence of an annual deposition pattern of a pair of bands (one opaque and one translucent) was found by marginal increment analyses. Von Bertalanffy growth parameters were estimated and no differences found between males and females (all data: L-inf=110.22 cm, K=0.11 y(-1) and t(0)=-1.58 y).

Alternativas de integración de ecosistemas estratégicos a la planificación urbana. Estudio de caso: el crecimiento urbano sobre la función eco-sistémica del corredor natural Usaquén – Suba. Periodo 2003– 2016

Los modelos de gestión urbana a nivel global, incorporan en la planeación y en el desarrollo de los entornos urbanos, al suelo natural de soporte como estructura fundamental; debido principalmente a sus funciones ecosistémicas y a los bienes ambientales que provee, incluyendo la biodiversidad y la conservación de entornos con calidad paisajística, entre otros. Teniendo en cuenta lo anterior, el objetivo principal de esta investigación, consiste en hacer un seguimiento y caracterización del ecosistema estratégico del corredor biológico borde norte en la ciudad de Bogotá, con el fin de identificar y dar visibilidad a los aspectos críticos, que son necesarios a tener en cuenta en la política e instrumentos de planeación, para el tratamiento de ésta área. En el desarrollo de esta investigación, se aplicaron las nociones metodológicas de la ecología urbana, dando inicio con una fase de diagnóstico y caracterización de la situación actual, seguido de la formulación de alternativas, entre las que se destacan, la restauración ecológica. En el diagnóstico se pudo identificar que, si bien existe disponibilidad de agua y de cobertura vegetal en las condiciones de suelo, también está presente una gran presión inmobiliaria en el sector, lo cual, ha promovido la alteración de los predios, haciendo urgente un tratamiento integral de restauración ecológica de éste corredor, que permita la recuperación de la función ecosistémica, aportando beneficios a la ciudad.

Evaluation of water use, yield and water productivity of a high-density orchard (cv. Cobrançosa) subjected to different irrigation regimes – An account of four years

The impact of different irrigation scheduling regimes on the water use, yield and water productivity from a high-density olive grove cv. Cobrançosa in southern Portugal was assessed during the irrigation seasons of 2011, 2012, 2013 and 2014. The experiments were conducted in a commercial olive orchard at the Herdade Álamo de Cima, near Évora (38o 29' 49.44'' N, 7o 45' 8.83'' W; alt. 75 m) in southern Alentejo, Portugal. The orchard was established with 10-year old Cobrançosa trees in grids of 8.0 x 4.2 m (300 trees ha-1) in the E-W direction, and experiments conducted on a shallow sandy loam Regosoil Haplic soil. From mid-May to the end of September the orchard was irrigated and three plots were subjected to one of two irrigation treatments: a control treatment A, irrigated to replace 100% ETc, a moderate deficit irrigation treatment B irrigated to 70% of ETc, and a more severe deficit irrigation treatment C that provided for approximately 50% of ETc. Daily tree transpiration rates were obtained by continuously monitoring of sap flow in representative trees per treatment. Among the irrigated treatments, water use efficiency (WUE, ratio of water used to irrigation- water applied) of treatment C was the highest, with a value of 0.89, being treatment B slightly lower, with a WUE of 0.76. Olive harvest for 2012 was an exceptional “on year”. Bearing yields showed contrasting differences within years where an “on year” was followed by an “off year”. In 2011 and 2012 treatment B yields were 41 and 50% higher than treatment C, respectively. In 2013 treatment B yield was 45% higher than yield of the fully irrigated treatment A, and treatment C showed practically the same yield than treatment A. In the “on year” of 2014 treatment B averaged 48% higher yield than treatment C. Treatment B farm irrigation water productivity (WPI-Farm, ratio of yield to water applied) was the highest among all treatments. Treatment A showed the lowest conversion efficiency of all treatments, indicating treatment B as the adequate deficit irrigation treatment for our Cobrançosa orchard