scholarly journals Over-Sampled Codes Design for PCFM Waveforms based WideBand BeamPattern Synthesis

Author(s):  
Ashenafi Yadessa Gemechu

The paper focuses on the design of over-sampled sequence to realize pulse coded frequency modulated(PCFM) waveform based wideband beampattern synthesis. It aims to solve the problem with space-frequency nulling having spectrally contained constant modulus waveforms. Specifically, it considers to minimize the OOB spectral power of the individual code sequences, hence, the individual waveforms during the design process. <div><br></div>

2021 ◽  
Author(s):  
Ashenafi Yadessa Gemechu

The paper focuses on the design of over-sampled sequence to realize pulse coded frequency modulated(PCFM) waveform based wideband beampattern synthesis. It aims to solve the problem with space-frequency nulling having spectrally contained constant modulus waveforms. Specifically, it considers to minimize the OOB spectral power of the individual code sequences, hence, the individual waveforms during the design process. <div><br></div>


Author(s):  
Jacqueline B. Barnett

The application of ergonomics is important when considering the built environment. In order to create an environment where form follows function, a detailed understanding of the tasks performed by the individuals who will live and work in the facility is required. Early involvement in the project is key to maximizing the benefit of ergonomics. At Sunnybrook and Women's College Health Sciences Centre in Toronto, Canada, this early intervention was embraced during the design process of a behavioural care unit for aggressive patients. The ergonomist was involved in three phases of design; user needs analysis, block schematics and detailed design. The user needs and characteristics were established using a combination of focus groups, interviews, direct observation, task analysis and critique of current working environments. The challenge was to present the information to the design team in a useful manner. The format chosen was a modification of Userfit (Poulson 1996) that outlined the various characteristics of the patient group and the design consequences with “what does this mean for me” statements. During the block schematics phase an iterative design process was used to ensure that the ergonomic principles and the user needs were incorporated into the design. Ergonomic input was used in determining the room sizes and layout and to ensure work processes were considered. Simple mock-ups and anthropometric data assisted in illustrating the need for design changes. Examples that highlight the areas of greatest impact of ergonomic intervention include the patient bathrooms, showers and tub room. Significant changes were made to the design to improve the safety of the work and living space of the end users. One of the greatest challenges was having an appreciation for the individual goals of the team members. Ensuring there was adequate space for equipment and staff often resulted in recommendations for increased space. This in turn would increase the cost of the project. The architect and, later in the project, the engineer had goals of bringing the project in on budget. The final design was very much a team effort and truly die result of an iterative process. The sum of the individual contributions could not match the combined efforts. It was only through the ergonomic contributions in this early design phase that the needs of the staff, patients and families could be so well represented. The success of the iterative process provides the foundation for bringing ergonomics considerations into the early design stages of future projects.


Author(s):  
Monika Maria Stumpp ◽  
Claudio Calovi Pereira

The development of design activity uses technical suports that allow the architect to record the evolution of your idea or communication with it. Historically, the support that has been used is the graphical representation, which, as a intelligence technology, joins with the creative and cognitive processes of the individual, allowing communication with their imagination and also to all individuals involved in projecting. The representations graphically materialized, calls drawing,  are important in the practice of architecture because they represent the evolution of the design process. The drawing means the way in which design is conducted, tested, controlled and ultimately appears performed. In this context the drawings of the Renaissance architect Andrea Palladio play a special role in the history of architecture, because it makes clear how he understood and thought the architecture. At that time, the graphical representation of the space acquired an importance that had not previously, incorporating a greater number of alternative representation, highlighting the aesthetic concerns and the current building techniques. A lot of drawings produced by Palladio, shows how he was deeply convinced of eloquence and priority of images to understand the architecture, more than any other form of discursive explanation. In this sense, this work investigates the drawings of Palladio as a tool at the process of design solutions translation. The reading of the project through the design has been used to study designs and architectural objects or certain styles or specific authorship of an architect. Here the method is used for reading the project of Villa Pisani in Bagnolo (1542). Using two and three dimensional drawings, represented by plan, section and volumetry, it is intended to make explicit certain aspects underlying the architectural work, as questions of proportion and symmetry. It is expected that, at the work of Palladio, this method allows to compare and understand drawings, in order to analyze mutations and replications and  search of new meanings, readings and interpretations.


10.14311/464 ◽  
2003 ◽  
Vol 43 (5) ◽  
Author(s):  
I. Jelínek

In this paper we show the possibility to formalize the design process by means of one type of non-standard logic - modal logic [1]. The type chosen for this study is modal logic S4. The reason for this choice is the ability of this formalism to describe modeling of the individual discrete steps of design, respecting necessity or possibility types of design knowledge.


2000 ◽  
Author(s):  
Joseph R. Fragola

Abstract Designers seldom, if ever, create designs “out of whole cloth”. They might begin with a clean piece of paper but their designs, no matter how creative or pioneering, must always embrace the technological heritage within which they are imbedded, at least to a degree. If they fail to do so they will almost certainly have great difficulty in being implemented, and even greater difficulty being successful. In this way the words “heritage” and “risk” have been linked, since time immemorial, in the design process and therefore in the designer’s mind’s eye. While this linkage is, in this sense, nothing new, the linkage has until recently been done heuristically and informally based upon the judgment and expertise of the individual designer, perhaps supplemented by the judgment and expertise of those peers of personal acquaintance. Recently, as an outgrowth of the broader application of probabilistic technology, a more formal and systematic link between design heritage and design risk has been attempted. While the number of actual applications are few, those that have been attempted seem to forecast that significant benefits might accrue from further development of the concept and its wider application especially in the case of the advanced technical designs so characteristic of aerospace systems. While the process of risk-based design is still in development, the individual steps in the process are beginning to evolve. These steps, which are listed in summary form in Figure 1 below, will be discussed in the presented paper as they apply to the design of a container to return samples from Mars.


Author(s):  
Rahul Rai

Identifying customer needs and preferences is one of the most important tasks in design process. Typically, a variation of interview based approaches is used to conduct need and preference analysis. In this paper, a new approach based on text mining online (internet based) customer reviews to supplement traditional methods of need and preference analysis is considered. The key idea underlying the proposed approach is to partition online customer generated product reviews into segments that evaluate the individual attributes of a product (e.g zoom capability and support of different image formats in a camcorder). Additionally, the proposed method also identifies the importance (ranking) that customers place on each product attributes. The method is demonstrated on 100 customer reviews submitted for camcorders on epinions.com over a two year period.


Author(s):  
John H. Burgess

Psychological interactions among members of a systems design team are frequently of major importance in the design process. Problems arise from specialized design interests as well as failure in systems discipline. Such problems can be resolved only by understanding the nature of the individual and his involvement in interpersonal design conflicts. Several areas may be considered for improving interpersonal relations in the systems design effort. Through increasing emphasis on significance of systems design, greater personal and professional involvement in the systems approach may be possible. Attention is required at the corporate-management organization level to orient individual engineering professional goals in terms of total system perspective. Indoctrination and discipline in systems philosophy and practices also require increased emphasis. Comprehensive design-team training might be considered as a means for improving the systems design process. Further study is suggested.


Author(s):  
Carolina Coelho

By recognizing the reciprocity between space and use, buildings are conceived not only as stages but also as producers of human behavior, and their users are both spectators and creators of meaning by appropriating space. Hence, space use is the actual acknowledgment of the design process when encountering life. The most common ways of incorporating space use onto the design process are translated by general information, such as: standards, theoretical models and conventions. However, each project implies a deep recognition of its context, users and needs, properly suiting the space conceived by the architect to its future appropriation. Therefore, the study of space use is an operative tool for the design process, informing on quantitative and qualitative variables, invariables and specificities of a real life scenario. Despite having different study fields (whether of a more mathematical, phenomenological or sociological nature), disciplines in the scope of “Evidence-Based Design”, such as Post-Occupancy Evaluation, Space Syntax and Usability Studies, act as input to the design process - a feedforward technique that complements the architect’s options, embracing Schön’s (1983) “reflection in action” concept. Through these instruments, the project will result on a more thorough one, supported by user research outputs and the feedback of a broader stakeholders’ community. This will bring closer the space thought by the architect during the design process and the space lived in by the individual afterwards.


2021 ◽  
Author(s):  
Binyang Song ◽  
Nicolás F. Soria Zurita ◽  
Hannah Nolte ◽  
Harshika Singh ◽  
Jonathan Cagan ◽  
...  

Abstract As Artificial Intelligence (AI) assistance tools become more ubiquitous in engineering design, it becomes increasingly necessary to understand the influence of AI assistance on the design process and design effectiveness. Previous work has shown the advantages of incorporating AI design agents to assist human designers. However, the influence of AI assistance on the behavior of designers during the design process is still unknown. This study examines the differences in participants’ design process and effectiveness with and without AI assistance during a complex drone design task using the HyForm design research platform. Data collected from this study is analyzed to assess the design process and effectiveness using quantitative methods, such as Hidden Markov Models and network analysis. The results indicate that AI assistance is most beneficial when addressing moderately complex objectives but exhibits a reduced advantage in addressing highly complex objectives. During the design process, the individual designers working with AI assistance employ a relatively explorative search strategy, while the individual designers working without AI assistance devote more effort to parameter design.


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