Essex County, Massachusetts, 1825 (Raster Image)

This layer is a georeferenced raster image of the historic paper map entitled: The county of Essex, made by John G. Hales ; engraved by J.V.N. Throop. It was published June 19th, 1825. Scale [ca. 1:90,000]. The image inside the map neatline is georeferenced to the surface of the earth and fit to the Massachusetts State Plane Coordinate System, Mainland Zone (in Feet) (Fipszone 2001). 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, or other information associated with the principal map. This map shows features such as roads, drainage, public buildings, churches, industry locations (e.g. mills, factories, mines, etc.), individual dwellings, town and county boundaries and more. Relief is shown by hachures. This layer is part of a selection of digitally scanned and georeferenced historic maps of Massachusetts from the Harvard Map Collection. These maps typically portray both natural and manmade features. The selection represents a range of regions, originators, ground condition dates (1755-1922), scales, and purposes. The digitized selection includes maps of: the state, Massachusetts counties, town surveys, coastal features, real property, parks, cemeteries, railroads, roads, public works projects, etc.

Defences of the Niagara Frontier (1764-1870) : An Historical Survey of Fort George, Fort Erie & Fort Mississauga

The intention of the Niagara Parks Commission to undertake restorations of Fort George, Fort Mississauga and Fort Erie has inspired this survey. The aim has not been to create an historical narrative - so many already exist - but rather to present an accurate description of the original appearance, structure and design of each of the Niagara Forts. This it is hoped may be of some practical assistance to those in charge of the actual work of restoration. In the case of Fort Mississauga which was maintained as a military post until 1857, vary complete information has been available. Fort George and Fort Erie were abandoned for military purposes after the War of 1812 and fewer plans and contemporary accounts have survived. While the work of research, involving the collection of every possible plan of the works and every drawing of their appearance as well as the piecing together of material, has been more difficult in the case of the latter forts, it is felt that the essential information has been secured. The use of a number of military terms in the description of the fortifications has been unavoidable and a glossary of these is included on page 66. The list of plans and illustrations is as complete as possible.

Strumenti e metodi per il miglioramento delle performance: il pilastro TPM del Focus Improvement. Il caso Philip Morris Manufacturing & Technology Bologna S.p.A.

Le peculiarità del contesto competitivo attuale richiedono alle aziende di muoversi con la massima velocità per rispondere il più rapidamente possibile al soddisfacimento delle richieste dei clienti. La ricerca di massima flessibilità non può prescindere dall’esigenza di mantenere alti livelli di efficienza produttiva e di tendere ad un continuo miglioramento dei flussi interni. L’elaborato ripercorre i passaggi fondamentali di un progetto di miglioramento delle performance di un impianto svolto nel primo semestre 2016 presso Philip Morris Manufacturing & Technology Bologna S.p.A. La metodologia utilizzata riprende strumenti, modelli e metodi dai principi alla base del Focus Improvement, primo pilastro del tempio della Total Productive Maintenance. Attraverso l’applicazione sistematica di tecniche tipiche del problem solving (ciclo di Deming) e di approcci analitici per la determinazione delle cause di guasto (curva di Pareto, Diagramma di Ishikawa), è stato possibile identificare i principali tipi di perdite (tempo, performance, difetti qualitativi) di una macchina industriale e mettere in atto gli interventi migliorativi necessari. L’analisi si conclude con la valutazione dei futuri sviluppi dello scenario, proponendo diverse alternative a seconda dell’abilità dell’organizzazione di sostenere i risultati raggiunti o addirittura di superarli.

Entre el terror y la solidaridad : La influencia de la revolución haitiana en las independencias de Venezuela y Nueva Granada (1804-1825)

En este trabajo me propongo analizar la influencia de la revolución de Haití en las independencias de Venezuela y Colombia durante los años 1804-1825. Miintención es demostrar que las repercusiones del proceso haitiano fueron vastas, complejas y sufrieron importantes cambios durante el transcurso de los años. En líneas generales, la revolución generó pánico entre las elites criollas y peninsulares y esperanzas entre grupos de esclavos y pardos. Inicialmente los sectores criollos revolucionarios buscaron evitar todo contacto con la isla y eludir el modelo insurgente haitiano por considerar que produciría en la Tierra Firme una "guerra de razas" y una hecatombe similar a la que, en su opinión, allí había acontecido. Sin embargo, a partir de 1812-1813 debido a las dificultades de la guerra de independencia una fracción de la elite criolla comenzó a estrechar vínculos con la República del Sur de Haití a través de contactos diplomáticos y corsarios. Estas primeras relaciones, más bien tímidas, fueron la condición de posibilidad de un cambio importante que sobrevino en 1816. En dicho año, debido a la reconquista de la expedición realista, la mayoría de los líderes independentistas huyeron de Tierra Firme y tuvieron que exiliarse en Haití, uno de los pocos lugares donde encontraron refugio y apoyo. En aquel contexto, se dio el pacto entre Alexandre Petión y Simón Bolívar, por el cual el primero se comprometió a aportar armas, barcos y hombres a la causa patriota a cambio de la emancipación de los esclavos hispanoamericanos. Este acuerdo fue fundamental ya que no sólo posibilitó la exitosa contraofensiva independentista, sino que además le dio un cariz social al proceso revolucionario de Venezuela y Colombia. Así, a partir de 1816 y hasta 1821, se dieron numerosos contactos e incluso el gobierno de Jean Pierre Boyer (sucesor de Alexandre Petión) colaboró con otras dos expediciones a cargo de Gregor Mac Gregor para liberar Panamá y Río Hacha. Sin embargo, el cambio no fue total y aún durante estos años, los líderes criollos continuaron teniendo reparos frente al peligro de la explosión de un nuevo Haití en la Tierra Firme hispana. Por último, el fin de la guerra de independencia abrió un nuevo contexto en el cual aquellos miedos se intensificaron debido a la movilización social interna. Esto derivó en nuevo alejamiento y el gobierno de Colombia no sólo se negó a mantener relaciones con Haití, sino que incluso lo excluyó del Congreso de Panamá.

Foraminifera in sediment cores of the Lomonosov Ridge and Morris Jesup Rise

X-ray fluorescence (XRF) scanning of sediment cores from the Lomonosov Ridge and the Morris Jesup Rise reveals a distinct pattern of Ca intensity peaks through Marine Isotope Stages (MIS) 1 to 7. Downcore of MIS 7, the Ca signal is more irregular and near the detection limit. Virtually all major peaks in Ca coincide with a high abundance of calcareous microfossils; this is particularly conspicuous in the cores from the central Arctic Ocean. However, the recorded Ca signal is generally caused by a combination of biogenic and detrital carbonate, and in areas influenced by input from the Canadian Arctic, detrital carbonates may effectively mask the foraminiferal carbonates. Despite this, there is a strong correlation between XRF-detected Ca content and foraminiferal abundance. We propose that in the Arctic Ocean north of Greenland a common palaeoceanographic mechanism is controlling Ca-rich ice-rafted debris (IRD) and foraminiferal abundance. Previous studies have shown that glacial periods are characterized by foraminfer-barren sediments. This implies that the Ca-rich IRD intervals with abundant foraminifera were most likely deposited during interglacial periods when glaciers left in the Canadian Arctic Archipelago were still active and delivered a large amount of icebergs. At the same time, conditions were favourable for planktic foraminifera, resulting in a strong covariance between these proxies. Therefore, we suggest that the XRF scanner's capability to efficiently map Ca concentrations in sediment cores makes it possible to systematically examine large numbers of cores from different regions to investigate the palaeoceanographic reasons for the calcareous microfossils' spatial and temporal variability.

Medieval India under Mohammedan rule (A.D. 712-1764).

Mode of access: Internet.