38 research outputs found
Trees to tap, science review working papers
No full textThis report provides the results of a literature review on the effects of active forest management (harvest, forest roads, and reforestation) on drinking water quality. In addition to the literature review, community water suppliers who rely on surface water as their primary source were surveyed to better understand their operations and priorities, and three case studies were conducted.contributors: Jon A. Souder, Kevin Bladon, Emily Jane Davis, Bogdan Strimbu, Jeff Behan, Michelle A. Day, Chris Ringo, Alan A. Ager, Robert Kennedy, Peter Clary, Lisa Gaines.Title from PDF cover (viewed on July 8, 2020).This archived document is maintained by the State Library of Oregon as part of the Oregon Documents Depository Program. It is for informational purposes and may not be suitable for legal purposes.Includes bibliographical references.Mode of access: Internet from the Oregon Government Publications Collection.Text in English
Development of a multi-lane cargo bike with a view to driving behaviour
No full textCargo bikes are a suitable alternative to cars for transporting food or loads for private individuals or delivery services,especially in city centers. Major advantages are that the use of cargo bikes is emission-free and causes no noise. In comparison,the intensive use of private cars in inner-city traffic is very harmful to the traffic system and the environment. In order to solvethis problems, this project deals with the product development of a multi-lane cargo bike, which is designed for the transport ofloads over short and medium distances. The funded SteigtUM project therefore developed an urban mobility concept based onmicromobiles. One part of these micromobiles are the cargo bikes mentioned above, which are used with an app-based hire system.The aim for the newly developed cargo bike with two wheels in the front is to achieve a driving behavior that is comparable to thedriving behavior of conventional single-lane bicycle. The reasons for the multi-lane design are an autonomous parking function,which is one of the overall objectives of the project and a safe standing even with loads. In order to gain a comparable drivingbehavior like single-lane bicycles, the strong dependence of the geometric design on the steering head angle and the caster mustbe given special consideration. In addition, the torsional stiffness and the track adjustment of the multi-lane axle are of greatimportance. The developments in the overall project take particular account of suitability for everyday use. Furthermore, they arebased on various user studies on driving behavior and thus ensure a high level of acceptance and usability. Cargo bikes thereforeoffer a great opportunity to further strengthen sustainable inner-city mobility and reduce the use of cars as a means of transport
Model Generation from Physical Principles: A Progress Report
No full textThis paper describes a framework and a system for generating mathematical models (i.e. sets of equations) for analyzing physical systems. The models are derived from physical principles and include not only models based on algebraic and ordinary differential equations (i.e. lumped" models), but also those based on partial differential equations (i.e. distributed" models). We are motivated by the need for analysis models to be used in designing artifacts and focus on the domain of thermal manufacturing. Our framework involves three sequential subtasks: identify regions of interest on the artifact, determine and identify the relevant physical processes, transform the set of individual processes into equations and carry out mathematical simplification. We take the view that understanding the task of model generation is fundamental to our future research on approximate modeling in design.Technical report CAP-TR-
Dynamic behaviour of cargo bikes: An approach for quantitative evaluation
No full textPeople’s desire for individuality and flexibility in inner-city traffic often leads to high emissions and a critical parking situation. The extensive use of private cars puts a strain on the entire transportation system. In order to counteract, this paper deals with quantifying driving behaviour in order to influence the product development of cargo bikes, which are designed to transportloads for short distances. The overall bicycle developments are based on user studies on riding behaviour and thus focus on higher acceptance. The aim is that the newly developed multi-lane cargo bikes will achieve the same driving behaviour as a conventional bicycle and increase public acceptance of sharing systems and usability of cargo bikes. A single-lane cargo bike is presented, which is used for the active recording of measured values. This enables the assessment of forces such as saddle forces, pedal forces and steering forces, as well as steering movement and velocity. Statistical methods can be used to draw conclusions about the driving behaviour of cargo bikes, which is significantly influenced by the load distribution. Cargo bikes present a valuable opportunity to reinforce sustainable mobility and supplant the automobile as a mode of transportation. In particular, if the transportation of heavy loads remains within the rider’s control, a positive riding experience can be achieved, as is the case with conventional bicycles
Synchronization of a WDM Packet-Switched Slotted Ring
No full textIn this paper, we present two different strategies of
slot synchronization in wavelength-division-multiplexing (WDM)
packet-switched slotted-ring networks. Emphasis is given to the
architecture behind the WDM Optical Network Demonstrator
over Rings (WONDER) project, which is based on tunable
transmitters and fixed receivers. The WONDER experimental
prototype is currently being developed at the laboratories
of Politecnico di Torino. In the former strategy, a slotsynchronization
signal is transmitted by the master station on a
dedicated control wavelength; in the latter, slave nodes achieve
slot synchronization aligning on data packets that are received
from the master. The performance of both synchronization strategies,
particularly in terms of packet-collision probability, was
evaluated by simulation. The technique based on transmitting a
timing signal on a dedicated control wavelength achieves better
performance, although it is more expensive due to the need for an
additional wavelength. However, the technique based on aligning
data packets that are received from the master, despite attaining
lower timing stability, still deserves further study, particularly
if limiting the number of wavelengths and receivers is a major
requirement. Some experimental results, which were measured on
the WONDER prototype, are also shown. Measurement results,
together with theoretical findings, demonstrate the good synchronization
performance of the prototype
Approximation Operators in Distributed Modeling
No full textComputer programs which do any task which requires reasoning about physical systems need to use models of those systems with varying accuracy/complexity traders. This paper describes an approach to model generation in the domain of heat transfer which is capable of producing models that vary greatly along this dimension. This approach is based on the law of conservation of energy, which provides a set of choices for the models in terms of control volumes" and heat flows. These choices are made by using rules of thumb, which can be seen as instances of two reduction operators, delta-iso, and dominance. Various rough models are used to estimate the physical parameters on which these rules depend. That is, the rough models are evaluated in the process of building more accurate ones. The application of these operators is only valid for a specific set of physically meaningful quantities; thus we are really reasoning about physics, not equations. This method has been implemented in a running system, MSG.Technical report CAP-TR-1
Right of Pre-emption
No full textŠī maģistra darba nosaukums ir „Izpirkuma tiesība”. Izpirkuma tiesība ir viduslaikos radies, bet mūsdienās novecojies vācu tiesību institūts .Izpirkuma tiesības institūts nav īpaši pētīts Latvijas valsts juridiskajā lieteratūra. Šajā maģistra darbā tiek konstatēts, ka vairumā gadījumos izpirkuma tiesības ir pārkāpto pirmpirkuma tiesību realizācijas instruments. Līdz ar to, lai konstatētu pirmpirkuma tiesības pārkāpumu vai arī, lai noteiktu vai personai attiecīgājā gadījumā vispār ir bijušas pirmpirkuma tiesības, šī maģistra darba ietvaros tiek pētīta arī pirmpirkuma tiesības būtība un tās tiesikās problēmas. Tāpat tiks apskatīti gadījumi, kad izpirkuma tiesība var pastāvēt atsevišķi no pirmpirkuma tiesības, bet pirmpirkuma tiesība - atsevišķi no izpirkuma tiesības.
Maģistra darba ietvaros tiks pētīti izpirkuma tiesības problēmjautājumi. Šajā nolūkā tiks izmantota ne tikai mūsdienu tiesībzinātnieku izdotie Civillikuma komentāri, bet arī līdz 1941.gadam izdota juridiskā literatūra, kā arī Latvijas Republikas Augstākās tiesas Senāta, Latvijas Republikas Augstākās tiesas Civillietu tiesu palātu un apgabaltiesu Civillietu tiesas kolēģiju spriedumu aprakstošās, motīvu un rezolutīvas daļas. Kā galvenie problemātiskie jautājumi tiek apskatīti izpirkuma tiesības realizācijas civilprocesualais raksturs (nekustamā īpašuma izpirkšana Civilprocesa likuma sevišķajā tiesāšanas kārtībā un prasības kārtībā), tai skaitā tiks nošķirti gadījumi, kad izpirkuma tiesības pieteikšana var notikt sevišķajā vai prasības kārtībā), piekritības noteikšanas nianses, izpirkuma tiesības noilguma izpratne un neprecīza interpretācija tiesu praksē, izpirkuma prasības nošķiršana no īpasuma prasības, kā arī izpirkuma tiesības izlietošanas nianses un izpircēja rīcības modelis nekustamā īpašuma pēc izpirkuma tiesības pieteikšanas atsavināšanas gadījumā.The title of this master’s thesis is the “Redemption rights”. The redemption rights is the German legal institution which was established during the middle ages though has become obsolete nowadays. The institution of the redemption rights has not earned any profound examination in the legal literature of the Latvian state. In this master’s thesis the author has established that in most cases the redemption rights are the tool to implement the pre – emptive rights violated. Therefore, in order to establish the violation of the pre – emptive rights or to determine whether a person in a certain case had any pre – emptive rights at all, the author within the framework of this thesis has also explored the essence of the pre – emptive rights and the related legal issues. The author has also looked into the cases when the redemption rights may exist separately from the pre – emptive rights, and the pre – emptive rights apart from the redemption rights.
Within the framework of the master’s thesis the author has also examined the problematic issues with the redemption rights. For this reason the author has used not only the commentaries to the Civil Law published by the modern legal scientists, but also the legal literature published prior to the year 1941 as well as the descriptive, motivational and resolution parts of the verdicts by the Senate of the Supreme Court of the Republic of Latvia, the Boards of the courts of the civil cases of the court chambers of the civil cases and the regional courts of the Supreme Court of the Republic of Latvia. As the main problematic issues the author has explored the civil and procedural character of the implementation of the redemption rights (the redemption of the real estate under the special litigation procedure and the claim procedure of the Law on the Civil Procedure); the author has also set aside the cases when the announcement of the redemption rights may occur under the special procedure or the claim procedure); the author has also explored the nuances for the determination of the competency, the understanding of the limitation for the redemption rights and inaccurate interpretation of the redemption rights in the jurisprudence, the separation of the redemption claim from the property claim as well as the nuances of the use of the redemption rights and the model for the actions by the redeemer in a case of the alienation of the real estate after the announcement of the redemption rights
Better than Cheesecake : An Analysis of Pin-Up Drawings in Esquire Magazine
No full text95 p.The author traces the evolution of the "pin-up girl" from the Victorian era Gibson Girl to the airbrushed drawings of artists like George Petty and Alberto Vargas in the mid-20th Century "girlie magazines like Esquire
MSG: A Computer System for Automated Modeling of Heat Transfer
No full textThe task of modeling, i.e. of creating a set of equations that can be used to predict the behavior of a physical object, is a key step in engineering analysis. This paper describes a computer system, MSG, for generating mathematical models to analyze physical systems involving heat transfer behavior. MSG is motivated by the need for modeling in an automated design process. The models are sets of equations which may include algebraic equations, ordinary differential equations, and partial differential equations. MSG uses the strong domain theory to guide model construction in three sequential tasks: identify regions of interests on an object, determine relevant heat transfer and energy storage processes, and transform these processes into equations. The decisions in these tasks are guided by estimates of variation in temperature and material property, and the relative strengths of heat transfer processes.Technical report CAP-TR-1
