scholarly journals Integrated Tools for Future Distributed Engine Control Technologies

Author(s):  
Dennis Culley ◽  
Randy Thomas ◽  
Joseph Saus

Turbine engines are highly complex mechanical systems that are becoming increasingly dependent on control technologies to achieve system performance and safety metrics. However, the contribution of controls to these measurable system objectives is difficult to quantify due to a lack of tools capable of informing the decision makers. This shortcoming hinders technology insertion in the engine design process. NASA Glenn Research Center is developing a Hardware-in-the-Loop (HIL) platform and analysis tool set that will serve as a focal point for new control technologies, especially those related to the hardware development and integration of distributed engine control. The HIL platform is intended to enable rapid and detailed evaluation of new engine control applications, from conceptual design through hardware development, in order to quantify their impact on engine systems. This paper discusses the complex interactions of the control system, within the context of the larger engine system, and how new control technologies are changing that paradigm. The conceptual design of the new HIL platform is then described as a primary tool to address those interactions and how it will help feed the insertion of new technologies into future engine systems.

Author(s):  
Godfrey Nakitare Nambafu ◽  
Richard Ndemo Onwonga

Over the years, new technologies have been tested and introduced to control Striga in maize producing areas but adoption has remained low. The study done in 2013, determined the demographic and socioeconomic factors that influenced the adoption of Striga control technologies in Kisumu West, Bumula and Teso South sub counties of Western Kenya. Through Multi stage sampling technique, 40 households were selected per sub county for questionnaire administration; to gather information on demographic profiles of the sample population, type of fertilizer and seed variety used, income of the household, source of credit facilities and challenges faced in weed control. Chi square test at P<0.05 and logistic regression analysis, using R software was used to determine the relationship between demographic and socioeconomic factors and uptake of Striga control technologies. Farmers cited high cost, poor availability of improved varieties and lack of adequate knowledge as reasons for non-adoption of the Striga control strategies. Farmer’s age, education, land size and hiring of labour were found to significantly influence the adoption of the Striga control technologies. The low levels of adoption of modern technology indicate that they were not meeting farmers’ expectations, thus, researchers should put into consideration farmers’ education, age, land size and ability to high labour in their planning for an informed technology adoption. In addition, alternative options should be extended to farmers who are not able to use expensive technologies.


2013 ◽  
Vol 22 (11) ◽  
pp. 3124-3140 ◽  
Author(s):  
Julian Catchen ◽  
Paul A. Hohenlohe ◽  
Susan Bassham ◽  
Angel Amores ◽  
William A. Cresko

Author(s):  
Andreas Knüpfer ◽  
Holger Brunst ◽  
Jens Doleschal ◽  
Matthias Jurenz ◽  
Matthias Lieber ◽  
...  

2021 ◽  
Author(s):  
Farren Kaylyn Foo ◽  
Derric Shen Chien Ong

Abstract Oil prices see large fluctuations peculiarly over the last eight years due to natural disasters, political instability, and Covid-19 pandemic shock. These prompt to anxiety towards expenditure in planning and forecasting of a field development plan (FDP). Economic optimization of a reservoir under water drive can be extremely tedious and time consuming especially for complex field. Traditionally, upon completion of forecast optimization on fluid production, reservoir engineer willhand over the reservoir models to petroleum economist for economical evaluation. If the chosen development strategy is not economically viable, the model strategies will have to be updated, and continue the repetition of financial evaluation all over again. Hence, this paper established an automated workflow that diminished the dilemma on iterations obligation between simulation runs and financial reviews in searching for most efficient waterflooding strategy. The automated workflow is accomplished by bridging three tools together seamlessly utilizing python scripting. These include the cash flow economic spreadsheet model, the dynamic simulator, and an assisted uncertainty analysis tool. The process first started with defining the economic parameters such as OPEX, CAPEX, oil price, taxes, discounted rates, and other financial parameters on an annual basis in spreadsheet. The uncertainty parameters: water injection rate, maximum water cut, and injection duration will be evaluated during forecast optimization to produce project efficiency indexes: Net Present Value (NPV) and Benefit-Cost Ratio (BCR). This integration was achieved by python script that automatically creates a coding path which exchanges simulation production and economic spreadsheet data at every simulation time step and each development strategy, that require no manual intervention. The integrated economic-dynamic model workflow has successfully applied on West Malaysian field and Olympus model, a development strategy that maximize oil recovery without neglecting cost of water disposal, storage for total water produced from the reservoir. This paper successfully identified the most efficient waterflooding strategy and production constraints for each well using BCR as objective function for optimization. The optimum development scenario does have a BCR which is more than 2 which show that investment on that particular development strategy is profitable. The results also demonstrated a crucial impression that the highest oil cumulative production may not results in high BCR due to cost involvement in resolving water production and field maintenance services. This paper outlined the methodology, python scripting codes, and how integration automation works that successfully optimized an injection strategy in a development project using economic model from third-party application. The results of this automated workflow demonstrate a successful utilization of new technologies and simple customize programming knowledge that promote cross-discipline integration for enhanced work-time efficiencies in problem solving that is suitable for all reservoir model type to determine its success rate and economic viability during FDP.


Author(s):  
Marilyn M. Helms ◽  
Rita Moore ◽  
Mohammad Ahmadi

The healthcare industry is under pressure to improve patient safety, operate more efficiently, reduce medical errors, and provide secure access to timely information while controlling costs, protecting patient privacy, and complying with legal guidelines. Analysts, practitioners, patients and others have concerns for the industry. Using the popular strategic analysis tool of strengths, weaknesses, opportunities, and threats analysis (SWOT), facing the healthcare industry and its adoption of information technologies (IT) are presented. Internal strengths supporting further industry investment in IT include improved patient safety, greater operational efficiency, and current investments in IT infrastructure. Internal weaknesses, however, include a lack of information system integration, user resistance to new technologies and processes, and slow adoption of IT. External opportunities including increased use of the Internet, a favorable national environment, and a growing call for industry standards are pressured by threats of legal compliance, loss of patient trust, and high cost of IT.


2014 ◽  
Vol 11 ◽  
pp. 625-633 ◽  
Author(s):  
Domenico Enrico Massimo ◽  
Mariangela Musolino ◽  
Antonino Barbalace ◽  
Cinzia Fragomeni

Pollution, environmental disruption, oversized urban development and infrastructure new construction jeopardize landscape integrity and peoples quality of life. Research deals with the landscape protection and enhancement providing governments and decision makers with a comprehensive Decision Support System to assess the quality of natural and cultural heritage and address planning measures and policy actions for landscape treasuring. Research set-up a sound methodology relying upon GIS tools, to spatially detect and define landscape units along with their endowment such as natural, ecological, historic, cultural, and urban resources then valuated with a GIS integrated multi criteria analysis tool set-up by the research team. Research developed a Case Study in the European Mediterranean Basin, validating the whole system and the performance and support of the GIS tools. Results achieved open the possibility to generalize the prototype application at regional, country and federation levels and therefore support the planning implementation for landscape enhancement.


Leonardo ◽  
2004 ◽  
Vol 37 (4) ◽  
pp. 325-330
Author(s):  
Oguzhan Özcan

This article introduces a conceptual design for an interactive artwork called Feel-in-Touch! Its aim is to improve the use of imagination in artworks using abstract images in the formats of interactive media and vibro-tactile aids. New technologies can visually realize every surrealistic narration we can imagine, but these technologies limit our perceptions by presenting only one way of imagining, instead of multiple alternatives. This restricts creative thinking. Working from the above assumption, this article explores how to increase the degree of imagination in an interactive artwork. The author discusses problems of the imagination in art and interactive media and summarizes current research on vibro-tactile and vibroacoustic applications. He then outlines Feel-in-Touch! and discusses the outputs of this conceptual design.


2020 ◽  
Vol 49 (5) ◽  
pp. 58-63
Author(s):  
A. D. Sukharev ◽  
D. B. Piskunov

In the course of research activities in the field of new technologies of information interaction of on-board equipment of objects of rocket-space and aviation equipment, as well as study of protection of information against leakage through technical channels, there was a hypothesis, about stealth of radio channel formed by means of new and promising developing technologies. The article discusses the use of radio wave interference control technologies (on adaptive formation of the sum of the signal phases) for beam formation. The features of the MU-MIMO and OFDMA technologies, which allows several simultaneous outgoing streams (downlink, uplink), providing simultaneous servicing of several devices at once, which increases the performance of the network as a whole, are considered. The implementation of the secrecy of the operation of the radio channel based on the considered technology for potential unauthorized detection of the operation of the radio channel and access to the transmitted information outside the beam pointing points is considered. Based on the description of the technology and on-site experiments, conclusions are drawn and recommendations are formulated on the methodology for detecting unauthorized data transfer implemented on the basis of the technology considered.


2021 ◽  
Vol 2 ◽  
Author(s):  
Francesco Russo ◽  
Giuseppe Musolino

Geographical location, infrastructures, and services are the main consolidated pillars of a port in terms of its capacity to compete and cooperate with other ports. In the last years, a new pillar was identified: emerging technologies. Ports’ issues were initially solved with individual ICT solutions adopted by each decision-maker, which generated efficiencies in the three main port flows: cargo, information, and financial. However, new benefits and challenges are connected with the introduction of shared emerging ICT among decision-makers inside ports. The crucial issue concerns the fact that several decision-makers could share a decision about a single-port operation. Therefore, the effectiveness and efficiency of ports depend on how the interactions between the decision-makers are solved. Port operations are associated with movements (cargo) and transactions (information and financial) in a synchronic graph, which allows highlighting the role of emerging technologies in the modification of port operation generalized cost, considering the different decision-makers. The focal point concerns the building of a theoretical model using the formal equations of Transport System Models (TSMs) for the estimation of the cost for a Unit of Load (UL), e.g., a container traveling along a path, composed of a sequence of port operations, inside a port with and without emerging technologies. The proposed theoretical model provides the possibility of estimating ex ante the reduction of cost (port time of UL) given by introducing new technologies and a Port Community System (PCS). Different scenarios, considering some cases, ranging from the absence of ICT to the presence of a PCS, are compared, considering the different situations from a non-congested port to a congested one. The main results of the study and its novelty concern, on the one hand, the extension of TSMs to port systems, highlighting the problem of a non-single decision-maker (two or more) in some port operations and, on the other hand, the possibility of reducing the generalized cost (e.g., time) in the same operations in which there are concurrent decision-makers, through the use of an advanced PCS. The reported numerical example confirms the theoretical results. The work can be useful for researchers for port planners (e.g., port authorities) because it permits evaluating the utility for introducing shared emerging technologies using advanced PCS in a unified view.


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