Package Patterns for Visual Architecture Recovery

Recovering the architecture is the first step towards reengineering a software system. Many reverse engineering tools use top-down exploration as a way of providing a visual and interactive process for architecture recovery. During the exploration process, the user navigates through various views on the system by choosing from several exploration operations. Although some sequences of these operations lead to views which, from the architectural point of view, are mode relevant than others, current tools do not provide a way of predicting which exploration paths are worth taking and which are not. In this article we propose a set of package patterns which are used for augmenting the exploration process with in formation about the worthiness of the various exploration paths. The patterns are defined based on the internal package structure and on the relationships between the package and the other packages in the system. To validate our approach, we verify the relevance of the proposed patterns for real-world systems by analyzing their frequency of occurrence in six open-source software projects.

EXHAUST EMISSIONS OF LOW LEVEL BLEND ALCOHOL FUELS FROM TWO-STROKE AND FOUR-STROKE MARINE ENGINES

The U.S. Renewable Fuel Standard mandates that by 2022, 36 billion gallons of renewable fuels must be produced on a yearly basis. Ethanol production is capped at 15 billion gallons, meaning 21 billion gallons must come from different alternative fuel sources. A viable alternative to reach the remainder of this mandate is iso-butanol. Unlike ethanol, iso-butanol does not phase separate when mixed with water, meaning it can be transported using traditional pipeline methods. Iso-butanol also has a lower oxygen content by mass, meaning it can displace more petroleum while maintaining the same oxygen concentration in the fuel blend. This research focused on studying the effects of low level alcohol fuels on marine engine emissions to assess the possibility of using iso-butanol as a replacement for ethanol. Three marine engines were used in this study, representing a wide range of what is currently in service in the United States. Two four-stroke engine and one two-stroke engine powered boats were tested in the tributaries of the Chesapeake Bay, near Annapolis, Maryland over the course of two rounds of weeklong testing in May and September. The engines were tested using a standard test cycle and emissions were sampled using constant volume sampling techniques. Specific emissions for two-stroke and four-stroke engines were compared to the baseline indolene tests. Because of the nature of the field testing, limited engine parameters were recorded. Therefore, the engine parameters analyzed aside from emissions were the operating relative air-to-fuel ratio and engine speed. Emissions trends from the baseline test to each alcohol fuel for the four-stroke engines were consistent, when analyzing a single round of testing. The same trends were not consistent when comparing separate rounds because of uncontrolled weather conditions and because the four-stroke engines operate without fuel control feedback during full load conditions. Emissions trends from the baseline test to each alcohol fuel for the two-stroke engine were consistent for all rounds of testing. This is due to the fact the engine operates open-loop, and does not provide fueling compensation when fuel composition changes. Changes in emissions with respect to the baseline for iso-butanol were consistent with changes for ethanol. It was determined iso-butanol would make a viable replacement for ethanol.

Performance-Based Engineering Framework for Earthquake and Fire Following Earthquake

The objective for this thesis is to outline a Performance-Based Engineering (PBE) framework to address the multiple hazards of Earthquake (EQ) and subsequent Fire Following Earthquake (FFE). Currently, fire codes for the United States are largely empirical and prescriptive in nature. The reliance on prescriptive requirements makes quantifying sustained damage due to fire difficult. Additionally, the empirical standards have resulted from individual member or individual assembly furnace testing, which have been shown to differ greatly from full structural system behavior. The very nature of fire behavior (ignition, growth, suppression, and spread) is fundamentally difficult to quantify due to the inherent randomness present in each stage of fire development. The study of interactions between earthquake damage and fire behavior is also in its infancy with essentially no available empirical testing results. This thesis will present a literature review, a discussion, and critique of the state-of-the-art, and a summary of software currently being used to estimate loss due to EQ and FFE. A generalized PBE framework for EQ and subsequent FFE is presented along with a combined hazard probability to performance objective matrix and a table of variables necessary to fully implement the proposed framework. Future research requirements and summary are also provided with discussions of the difficulties inherent in adequately describing the multiple hazards of EQ and FFE.

An Isopach Map and Discussion of the Marine Jurassic of Western United Sates and Canada

Recent demands for petroleum to carry on the war effort have resulted in widespread prospecting in the northern Great Plains. Nearly all oil wells now drilled are of a depth to penetrate the marine Jurassic formations. It is known that these strata differ in thickness from place to place, but information of distribution, thickness, and lithology has not yet been compiled.

Model Driven Architecture (MDA): Integration and Model Reuse for Open Source eLearning Platforms

Open Source (OS) community offers numerous eLearning platforms of both types: Learning Management Systems (LMS) and Learning Content Systems (LCS). General purpose OS intermediaries such as SourceForge, ObjectWeb, Apache or specialized intermediaries like CampusSource reduce the cost to locate such eLearning platforms. Still, it is impossible to directly compare the functionalities of those OS software products without performing detailed testing on each product. Some articles available from eLearning Wikipedia show comparisons between eLearning platforms which can help, but at the end they barely serve as documentation which are becoming out of date quickly [1]. The absence of integration activities between OS eLearning platforms - which are sometimes quite similar in terms of functionalities and implementation technologies - is sometimes critical since most of the OS projects possess small financial and human resources. This paper shows a possible solution for these barriers of OS eLearning platforms. We propose the Model Driven Architecture (MDA) concept to capture functionalities and to identify similarities between available OS eLearning platforms. This contribution evolved from a fruitful discussion at the 2nd CampusSource Developer Conference at the University of Muenster (27th August 2004).

Towards a treaty instrument on marine genetic resources

Marine genetic resources other than fish and mammals are of increasing commercial interest and importance in genetic engineering, but fail being properly addressed in the law of the sea and in international economic law. The paper analyses the implication of the United Nations Convention on the Law of the Sea, the Convention on Biodiversity, the WTO Agreement on Trade Related Aspects of Intellectual Property Rights and related instruments under the auspices of WIPO. The paper argues that the triangle of these agreements does not adequately address marine genetic resources in particular in the high seas. Neither concerns of protecting biodiversity nor of access and benefit sharing find appropriate answers commensurate to the commercial potential of marine genetic resources. The paper suggests developing an instrument inspired by, and comparable to, the mechanisms developed by the International Treaty on Plant Genetic Resources for Food and Agriculture. The instrument would grant facilitated access to marine genetic resources and offer a more detailed set of rules with respect to the sharing of benefits resulting from their use, thereby addressing the existing legal gaps in a comprehensive way.

Trayectoria reciente y perspectivas futuras de la industria naval pesada argentina : Los astilleros estatales

Con un marco regulatorio de tipo proteccionista que buscaba promover la construcción de barcos en el país, la industria naval argentina se consolidó y expandió hasta los años 80 gracias a una fuerte intervención estatal, iniciada durante el proceso de Industrialización por Sustitución de Importaciones (isi). El presente trabajo se propone describir la historia reciente de este sector industrial, desde 1950 hasta la actualidad, centrando la atención en dos aspectos fundamentales: por un lado, el rol central del Estado (y de su política industrial) como regulador, productor, cliente y agente de financiación de la industria naval; por otro, la activa participación de los actores sociales, especialmente los trabajadores organizados, en la supervivencia productiva del sector en la década del 90. Para llevar adelante este propósito, nos centramos en el estudio de los dos astilleros estatales de construcción y reparación naval más importantes del país: Astillero Río Santiago (ars) y Talleres Dársena Norte (Tandanor). A modo de conclusión, reflexionamos sobre los principales desafíos y la perspectiva futura del sector así como sobre las responsabilidades que, en tal sentido, les caben a los actores sociales más relevantes

Trayectoria reciente y perspectivas futuras de la industria naval pesada argentina : Los astilleros estatales

Con un marco regulatorio de tipo proteccionista que buscaba promover la construcción de barcos en el país, la industria naval argentina se consolidó y expandió hasta los años 80 gracias a una fuerte intervención estatal, iniciada durante el proceso de Industrialización por Sustitución de Importaciones (isi). El presente trabajo se propone describir la historia reciente de este sector industrial, desde 1950 hasta la actualidad, centrando la atención en dos aspectos fundamentales: por un lado, el rol central del Estado (y de su política industrial) como regulador, productor, cliente y agente de financiación de la industria naval; por otro, la activa participación de los actores sociales, especialmente los trabajadores organizados, en la supervivencia productiva del sector en la década del 90. Para llevar adelante este propósito, nos centramos en el estudio de los dos astilleros estatales de construcción y reparación naval más importantes del país: Astillero Río Santiago (ars) y Talleres Dársena Norte (Tandanor). A modo de conclusión, reflexionamos sobre los principales desafíos y la perspectiva futura del sector así como sobre las responsabilidades que, en tal sentido, les caben a los actores sociales más relevantes

Trayectoria reciente y perspectivas futuras de la industria naval pesada argentina : Los astilleros estatales

Con un marco regulatorio de tipo proteccionista que buscaba promover la construcción de barcos en el país, la industria naval argentina se consolidó y expandió hasta los años 80 gracias a una fuerte intervención estatal, iniciada durante el proceso de Industrialización por Sustitución de Importaciones (isi). El presente trabajo se propone describir la historia reciente de este sector industrial, desde 1950 hasta la actualidad, centrando la atención en dos aspectos fundamentales: por un lado, el rol central del Estado (y de su política industrial) como regulador, productor, cliente y agente de financiación de la industria naval; por otro, la activa participación de los actores sociales, especialmente los trabajadores organizados, en la supervivencia productiva del sector en la década del 90. Para llevar adelante este propósito, nos centramos en el estudio de los dos astilleros estatales de construcción y reparación naval más importantes del país: Astillero Río Santiago (ars) y Talleres Dársena Norte (Tandanor). A modo de conclusión, reflexionamos sobre los principales desafíos y la perspectiva futura del sector así como sobre las responsabilidades que, en tal sentido, les caben a los actores sociales más relevantes

Box Corer (engineering detail drawing of the large version)

The Box corer is a marine geological and biological sampling tool for soft sediments in lakes or oceans. It is deployed from a research vessel with a deep sea wire and suitable for any water depth. It is designed for a minimum of disturbance of the sediment surface by bow wave effects which is important for quantitative investigations of the benthos micro- to macrofauna, geochemical processes, sampling of bottom water or sedimentology. The large box corer version with an area of 2,500 cm? is frequently used on research vessels since the 1980th years. This data set is a publication of the engeneering drawings.