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Design Practice (design + practice)
Selected AbstractsParallel Processing: Design /PracticeARCHITECTURAL DESIGN, Issue 5 2006David Erdman Abstract In the late 1990s servo emerged as a young design collaborative embracing new forms of distributed practice as enabled by the advent of telecommunications technologies. In this section, David Erdman, Marcelyn Gow, Ulrika Karlsson and Chris Perry write about how these organisational principles are at work not only in the context of their practice, but in the design work itself, which stretches across a variety of design disciplines to incorporate areas of expertise particular to information and interaction design, as well as a number of manufacturing and fabrication technologies. Many of servo's projects have focused on small-scale interior infrastructures, typically in the form of gallery installations, furniture systems and exhibition designs. This particular scale has allowed the group to focus on the development of full-scale prototypes, exploring a wide range of potential innovations at the point of integration between various technological and material systems. Copyright © 2006 John Wiley & Sons, Ltd. [source] Instructional Design Practice: Career Environments, Job Roles, and a Climate of ChangePERFORMANCE IMPROVEMENT QUARTERLY, Issue 1 2004Miriam B. Larson ABSTRACT Instructional Design and Technology (IDT) professionals practice their skills in a broad range of career environments and job roles. The resulting collection of competency lists and wide range of practice environments, coupled with the frequent changes that have always characterized the field, produce complexity that is difficult to communicate to IDT students. However, students need to understand these complex aspects of the field so that they can make informed decisions about their career goals and educational direction. This review of the current literature looks at the current issues impacting practice and preparation. It concludes that the path professional academic preparation programs choose will depend on their orientation to instructional design and performance improvement, and whether they see themselves as preparing students for specific career environments or are pursuing a generalist program. [source] Optimisation Stories: The Impact of Building Information Modelling on Contemporary Design PracticeARCHITECTURAL DESIGN, Issue 2 2009Richard Garber First page of article [source] Modellierung der Baugrund-Tragwerk-Interaktion: Ein Fundament der geotechnischen EntwurfspraxisBETON- UND STAHLBETONBAU, Issue 4 2005Conrad Boley Univ.-Prof. Der vorliegende Beitrag beschäftigt sich mit den Ursachen und Auswirkungen der Baugrund-Tragwerk-Interaktion. Welche Möglichkeiten es gibt, die Interaktion zwischen Baugrund und Tragwerk zu berücksichtigen, bzw. welche Folgen es haben kann, wenn sie vernachlässigt wird, soll anhand einiger Beispiele aus der Baupraxis verdeutlicht werden. Modelling of the Soil-Structure-Interaction: The Basis for Geotechnical Design Practice This article reviews the causes and the effects of the interaction between soil and structure. The possible ways to deal with this interaction, respectively what will happen if it is neglected, will be demonstrated with some practical examples. [source] Refactoring service-based systems: how to avoid trusting a workflow serviceCONCURRENCY AND COMPUTATION: PRACTICE & EXPERIENCE, Issue 10 2006Howard Chivers Abstract Grid systems span multiple organizations, so their workflow processes have security requirements, such as restricting access to data or ensuring that process constraints are observed. These requirements are often managed by the workflow component, because of the close association between this sub-system and the processes it enacts. However, high-quality security mechanisms and complex functionality are difficult to combine, so designers and users of workflow systems are faced with a tradeoff between security and functionality, which is unlikely to provide confidence in the security implementation. This paper resolves that tension by showing that process security can be enforced outside the workflow component. Separating security and process functionality in this way improves the quality of security protection, because it is implemented by standard system mechanisms; it also allows the workflow component to be deployed as a standard service, rather than a privileged system component. To make this change of design philosophy accessible outside the security community it is documented as a collection of refactorings, which include problem templates that identify suspect design practice, and target patterns that provide solutions. Worked examples show that these patterns can be used in practice to implement practical applications, with both traditional workflow security concerns, and Grid requirements. Copyright © 2005 John Wiley & Sons, Ltd. [source] Applicability of pushover methods for the seismic analysis of single-column bent viaductsEARTHQUAKE ENGINEERING AND STRUCTURAL DYNAMICS, Issue 8 2008Tatjana Isakovi Abstract An overview of the applicability of a typical single-mode pushover method (the N2 method) and two typical multi-mode pushover methods (the modal pushover analysis (MPA) and incremental response spectrum analysis (IRSA) methods) for the analysis of single column bent viaducts in the transverse direction is presented. Previous research, which was limited to relatively short viaducts supported by few columns, has been extended to longer viaducts with more bents. The single-mode N2 method is accurate enough for bridges where the effective modal mass of the fundamental mode is at least 80% of the total mass. The applicability of this method depends on (a) the ratio of the stiffness of the superstructure to that of the bents and (b) the strength of the bents. In short bridges with few columns, the accuracy of the N2 method increases as the seismic intensity increases, whereas in long viaducts (e.g. viaducts with lengths greater than 500,m) the method is in general less effective. In the case of the analyzed moderately irregular long viaducts, which are common in construction design practice, the MPA method performed well. For the analysis of bridges where the modes change significantly, depending on the seismic intensity, the IRSA method is in principle more appropriate, unless a viaduct is torsionally sensitive. In such cases, all simplified methods should be used with care. Copyright © 2008 John Wiley & Sons, Ltd. [source] Stress-life fatigue assessment of pipelines with plain dentsFATIGUE & FRACTURE OF ENGINEERING MATERIALS AND STRUCTURES, Issue 12 2009S. B. CUNHA ABSTRACT This paper presents a new algorithm for assessing the fatigue life of dented pipelines. The proposed methodology was conceived according to the current stress-life fatigue theory and design practice: it employs S,N curves inferred from tensile test material properties and uses well established methodologies to deal with the stress concentration, the mean stress and the multi-axial stress state that characterizes a dented pipe. Finite element analyses are carried out to model the denting process and to determine the stress concentration factors of several pipe-dent geometries. Using dimensional analysis over the numerical results, a non-dimensional number to characterize the pipe-dent geometry is determined and linear interpolation expressions for the stress concentration factors of dented pipelines are developed. Fatigue tests are conducted with the application of cyclic internal pressure on small-scale dented steel pipe models. In view of the fatigue test results, the more appropriate S,N curve and mean stress criteria are selected. [source] Examples of fire engineering design for steel members, using a standard curve versus a new parametric curveFIRE AND MATERIALS, Issue 2-4 2004C. R. Barnett Abstract This paper presents examples of the differences that can occur when a standard time-temperature curve and a parametric time-temperature curve are used to determine temperatures likely to be reached by uninsulated and insulated steel members during a fire. For low and moderate structural fire severity situations, determination of the adequacy of a steel member by comparing the temperature reached in a ,design fire' with the limiting temperature based on the member heat sink characteristics, extent of insulation and utilization factor is becoming increasingly common fire engineering design practice. For this it is important to have an accurate and widely applicable parametric fire model as is practicable. The standard time-temperature curve used in the examples is the ISO 834 curve. The two parametric time-temperature curves used in the paper are the Eurocode parametric curve and a recently developed one termed the ,BFD curve'. The latter has been found to fit the results of a wide range of actual fire tests more closely than do existing parametric curves and is mathematically simpler in form. The shape of the BFD curve and the parameters used to define it bear a strong relationship to both the pyrolysis coefficient (R/Avhv0.5) and the opening factor, F02. The curve also models the development of fire without the need for time shifts. It uses a single and relatively simple equation to generate the temperature of both the growth and decay phases of a fire in a building and only three factors are required to derive the curve. These factors are (i) the maximum gas temperature, (ii) the time at which this maximum temperature occurs, and (iii) a shape constant for the curve. If desired, the shape constant can be different on the growth and the decay sides to model a very wide range of natural fire conditions and test results. This paper presents an overview of the background to the BFD curve. It then illustrates its use in a simple fire engineering design application, where the adequacy of a steel beam is checked using the Eurocode parametric curve and the BFD curve to represent the fire. Copyright © 2004 John Wiley & Sons, Ltd. [source] Lateral load distributions on grouped piles from dynamic pile-to-pile interaction factorsINTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, Issue 2 2009Der-Wen Chang Abstract The load distributions of the grouped piles under lateral loads acting from one side of the pile cap could be approximately modeled using the elasticity equations with the assumptions that the underground structure is rigid enough to sustain the loads, and only small deformations of the soils are yielded. Variations of the soil,pile interactions along the depths are therefore negligible for simplicity. This paper presents the analytical modeling using the dynamic pile-to-pile interaction factors for 2,×,2 and 2,×,3 grouped piles. The results were found comparative with the experimental and numerical results of other studies. Similar to others' findings, it was shown that the leading pile could carry more static loads than the trailing pile does. For the piles in the perpendicular direction with the static load, the loads would distribute symmetrically with the centerline whereas the middle pile always sustains the smallest load. For steady-state loads with operating frequencies up to 30 Hz, the pile load distributions would vary significantly with the frequencies. It is interesting to know that designing the pile foundation needs to be cautioned for steady-state vibrations as they are a problem of machine foundation. However, for transient loads or any harmonic loads acting upon relatively higher frequencies, the pile loads could be regarded as uniformly distributed. It is hoped that the numerical results of this paper will be helpful in the design practice of pile foundation. Copyright © 2008 John Wiley & Sons, Ltd. [source] Strategic Teaching: Student Learning through Working the ProcessINTERNATIONAL JOURNAL OF ART & DESIGN EDUCATION, Issue 2 2010Nancy Spanbroek The designers of our future built environment must possess intellectual tools which will allow them to be disciplined, flexible and analytical thinkers, able to address and resolve new and complex problems. In response, an experimental and collaborative design studio was designed to inspire and build on students' knowledge and their creative thinking abilities through a series of explorative exercises and modelling. The learning experience of students undertaking this studio was enabled and guided by a collaboration of teachers experienced in both teaching and creative practice. A series of guest creative practitioners joined the studio's intensive 10-week hands-on workshop sessions within which students undertook set exercises. These creative research workshops then served to inform subsequent design development of the students' work through planning and documentation over a period of 4 weeks. Strategic teaching is central to the creative development process. The driving educational belief, as idea and practice, is that by bringing ideas to life in design, by working with full-scale three-dimensionality, students are able to cement their commitment to ,working the process', towards becoming excellent designers. This ambitious strategy enables students to work on the many different aspects of the design problem towards meeting their design outcome at the highest level of resolution and intent. Through a combination of pragmatic tasks , writing and developing design briefs , and visual tasks , evidence gathering and analysis of design through photographic, modelling and diagramming exercises , students were encouraged to think outside and beyond the ,normal' realm of design practice. [source] The Impact of Formal Assessment Procedures on Teaching and Learning in Art and Design in Secondary SchoolsINTERNATIONAL JOURNAL OF ART & DESIGN EDUCATION, Issue 2 2006Rachel Mason Assessment is widely considered to be the most significant issue affecting art and design practice at secondary level. The article begins with an historical overview of developments in and critiques of assessment procedures in England, Wales and Northern Ireland since the inception of GCSE examination. This is followed by a report of an attempt to carry out a systematic review of research on the impact of assessment on the art and design curriculum in secondary schools. Author conclusions and findings from eight studies subjected to in-depth analysis are discussed together with the implications of the review exercise for art education policy, practice and research. [source] Empirical Design Research: Student Definitions, Perceptions, and ValuesJOURNAL OF INTERIOR DESIGN, Issue 2 2007Joan I. Dickinson Ph.D. ABSTRACT Third and fourth year undergraduate interior design students in Colleges of Architecture or Human Sciences at three different research universities were surveyed to compare their: (1) perceived value of research in interior design practice, (2) perceptions of who should conduct research, (3) attitudes toward research in interior design education, and (4) definitions of research. A survey instrument was developed that consisted of one open-ended question and 29 questions using a Likert scale. Questions were adapted from the Chenoweth and Chidister (1983) scale that measured landscape architecture attitudes toward research, and from the Dickson and White (1993) scale administered to interior design practicing professionals. A total of 89 undergraduate students were surveyed from the three universities. The majority of the students were Caucasian (n = 79) and female (n = 84). The results indicated that, overall, students valued research for the profession regardless of their college or university affiliation. However, their definitions of research were pragmatic in nature, and they often regarded research as the gathering of information rather than the generation of new knowledge. The students were also unclear about who should be conducting interior design research. College affiliation revealed that students who were in an architecturally-based program put a higher value on research at the undergraduate level than those students housed in a College of Human Sciences; similarly, College of Architecture students had a better understanding that research advanced a profession. [source] "I'm feeling lucky": The role of emotions in seeking information on the WebJOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY, Issue 6 2006James Kalbach Recent research highlights the potential relevance of emotions in interface design. People can no longer be modeled as purely goal-driven, task-solving agents: They also have affective motivations for their choices and behavior implying an extended mandate for search design. Absent from current Web design practice, however, is a pattern for emotive criticism and design reflecting these new directions. Further, discussion of emotions and Web design is not limited to visual design or aesthetic appeal: Emotions users have as they interact with information also have design implications. The author outlines a framework for understanding users' emotional states as they seek information on the Web. It is inspired largely by Carol Kuhlthau's (1991, 1993, 1999) work in library services, particularly her information searching process (ISP), which is adapted to Web design practice. A staged approach resembling traditional models of information seeking behavior is presented here as the basis for creating appropriate search and navigation systems. This user-centered framework is flexible and solution-oriented, enjoys longevity, and considers affective factors. Its aim is a more comprehensive, conceptual analysis of the user's entire information search experience. [source] Evidence-based practice in search interface designJOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE AND TECHNOLOGY, Issue 6 2006Barbara M. Wildemuth An evidence-based practice approach to search interface design is proposed, with the goal of designing interfaces that adequately support search strategy formulation and reformulation. Relevant findings from studies of information professionals' searching behaviors, end users' searching of bibliographic databases, and search behaviors on the Web are highlighted. Three brief examples are presented to illustrate the ways in which findings from such studies can be used to make decisions about the design of search interfaces. If academic research can be effectively connected with design practice, we can discover which design practices truly are "best practices" and incorporate them into future search interfaces. [source] A TRIANGULAR MODEL OF DIMENSIONLESS RUNOFF PRODUCING RAINFALL HYETOGRAPHS IN TEXAS,JOURNAL OF THE AMERICAN WATER RESOURCES ASSOCIATION, Issue 4 2003William H. Asquith ABSTRACT: A synthetic triangular hyetograph for a large data base of Texas rainfall and runoff is needed. A hyetograph represents the temporal distribution of rainfall intensity at a point or over a watershed during a storm. Synthetic hyetographs are estimates of the expected time distribution for a design storm and principally are used in small watershed hydraulic structure design. A data base of more than 1,600 observed cumulative hyetographs that produced runoff from 91 small watersheds (generally less than about 50 km2) was used to provide statistical parameters for a simple triangular shaped hyetograph model. The model provides an estimate of the average hyetograph in dimensionless form for storm durations of 0 to 24 hours and 24 to 72 hours. As a result of this study, the authors concluded that the expected dimensionless cumulative hyetographs of 0 to 12 hour and 12 to 24 hour durations were sufficiently similar to be combined with minimal information loss. The analysis also suggests that dimensionless cumulative hyetographs are independent of the frequency level or return period of total storm depth and thus are readily used for many design applications. The two triangular hyetographs presented are intended to enhance small watershed design practice in applicable parts of Texas. [source] Computatonal Intelligence: The Grid as a Post-Human NetworkARCHITECTURAL DESIGN, Issue 5 2006Philippe Morel Abstract Research and design collaborative EZCT Architecture & Design Research has adopted grid computing to produce a series of furniture systems and other small-scale prototypes using genetic algorithms in combination with automated fabrication technologies. Here, cofounder Philippe Morel relates this design practice to the broader technical and social implications of various grid-computing projects, such as the online organisation Folding@Home, which utilises grid computing and distributed communities for the production and exchange of postindustrial knowledge. He argues that these ,knowledge farms' which create an ,ambient factory', are perhaps the ultimate form of social-economic production, transforming not only the evolution of design but of the communities that produce and eventually consume its products. Copyright © 2006 John Wiley & Sons, Ltd. [source] Catastrophic incident prevention and proactive risk management in the new biofuels industry,ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY, Issue 1 2009Judy A. Perry Abstract This article is directed at assisting bioethanol manufacturers with preventing catastrophic incidents which could impact the entire Biofuels Industry. The biofuels industry has common hazards and potential consequences like other industries, related to the handling of flammables, dust explosion hazards and toxic or corrosive materials handling. This article ensures the reader understands these specific bioethanol manufacturer's process hazards are very real as demonstrated by past incidents and their catastrophic results. Regulatory obligations are discussed, as well as key engineering resources and design practices to ensure adequate safeguards are incorporated into the design of a new bioethanol manufacturing facility. The industry is fairly new, however, the hazards and safeguards to reduce the risk level with the common hazards are not new. Preliminary indications are this industry has yet to establish the proactive risk management efforts that are required to reduce the risks to a tolerable level. This article is to provide the supporting data and direction to the Biofuels Industry to ensure each are headed down a path of preventing a future catastrophe. © 2009 American Institute of Chemical Engineers Environ Prog, 2009 [source] System design in normative and actual practice: A comparative study of cognitive task allocation in advanced manufacturing systemsHUMAN FACTORS AND ERGONOMICS IN MANUFACTURING & SERVICE INDUSTRIES, Issue 2 2004Sotiris Papantonopoulos The Human Factors Engineering approach to human-machine system design is based largely on normative design methods. This article suggests that the scope of Human Factors Engineering shall be extended to the descriptive study of system design in actual practice by the application of theoretical frameworks that emphasize the role of the system-design practitioner and organization in the design process. A comparative study of system design in normative and actual practice was conducted in the design of cognitive task allocation in a Flexible Manufacturing System (FMS) cell. The study showed that the designers' allocation decisions were influenced strongly by factors related to their own design practices, yet exogenous to the tasks to be allocated. Theoretical frameworks from Design Research were applied to illustrate differences between normative and actual practice of system design. © 2004 Wiley Periodicals, Inc. Hum Factors Man 14: 181,196, 2004. [source] Project Development in Complex Environments: Assessing Safety in Design and Decision-MakingJOURNAL OF CONTINGENCIES AND CRISIS MANAGEMENT, Issue 3 2001Joop F. M. Koppenjan How can we be sure that safety risks are adequately dealt with in the design of complex, innovative projects? In The Netherlands, a number of recent innovative project initiatives have made this a relevant question. These initiatives include projects such as the construction of tunnels using new technologies, the construction of underground facilities that combine several functions, i.e. shopping, parking and transport, and the development of a transport corridor in which rail, road and waterway have been or will be combined. These projects combine several functions and have been, or will be, realised in densely built and populated areas. Although safety regulations for products and systems have been institutionalised through legislation and professional design practices, recent project proposals link systems and their environment in new and complex ways. The risks evolving from these links are unknown and the extent to which they are covered by existing safety approaches is uncertain. In this contribution, we examine how the attention paid to safety can be increased and maintained in the design process of infrastructural projects. First, we discuss the need to reorganise the safety focus in the design process. Then we describe the role of the design process in decision-making for major projects with regard to utility building, town planning and the construction of infrastructures. Third, we elaborate how the focus on safety can be organised within this context, given developments in the field of interactive decision-making and the design and management of interaction processes. We then outline a safety risk management method that can be used to achieve this and, finally, address the conditions that influence the use of this method. [source] Emerging Christian Scholars among the Intellectual Virtues or Why They All Should Be ThomistsNEW BLACKFRIARS, Issue 1020 2008Todd C. Ream Abstract The reason why all of our students should be Thomists is that excellence among the intellectual virtues is what should come to define our aspirations for them as emerging Christian scholars. Such aspirations are formed by the design and implementation of practices of study. Such aspirations denounce any distinction between subject and object or finite and infinite. However, such aspirations are also guided by the narrative of excellence as defined by the beatific vision of God. Thomas Aquinas reminds us that this narrative is not one the academy generates on its own but is the story of Christianity as embodied by the Church. Failure to recognize such a narrative and design practices of study accordingly not only leaves our students beyond the formative influence of the intellectual virtues but also leaves them susceptible to the influences wielded by other narratives such as the narrative of the market economy. [source] Revisiting DIERS' two-phase methodology for reactive systems twenty years laterPROCESS SAFETY PROGRESS, Issue 3 2006Hans K. Fauske Building on the original DIERS methodology presented 20 years ago, an easy to use design methodology for reactive vapor, gassy, and hybrid systems has resulted that properly accounts for two-phase flow effects. The methodology is shown to be consistent with available experimental and incident information and examples of bad and good design practices are provided for vapor, gassy, and hybrid systems. The latest methods for calculating the area of reliefs for vapor, gassy, and hybrid systems are given in this article. © 2006 American Institute of Chemical Engineers Process Saf Prog, 2006 [source] Design Inertia: Designing for Life-Cycle Flexibility in Internet-Based Services,THE JOURNAL OF PRODUCT INNOVATION MANAGEMENT, Issue 3 2005Roberto Verganti Managing innovation in rapidly moving environments, such as Internet-based services, is a major challenge in theory and in practice. Most of the existing literature focuses on the development process as the main area in which innovation takes place. However, in environments where the pace of change of technology and market needs is extremely high, managing service innovations means not only being able to design a good service but also, more importantly, continuously redesigning and adapting the service in order to deal with frequent exogenous changes and opportunities. A high number of innovations therefore must be introduced throughout the entire life cycle of a service. This capability of introducing incremental and radical innovations during the service life cycle (i.e., to adapt a service to contextual changes and opportunities after it has been first released onto the market) at low costs and in the shortest possible time is what is defined here as service life-cycle flexibility. This process of service adaptation and upgrading implies significant challenges that can be traced back to when a service is first conceived and designed. In fact, many decisions made during the first design process (i.e., the choice of a given database environment) involve a low reversibility rate and may reduce the possibility of taking advantage of future unpredictable opportunities, creating what is called inertia toward innovation. In other words, service life-cycle flexibility largely depends on how a service has been first designed. This article analyzes two in-depth case studies of Italian online newspapers and identifies five possible inertia factors that may influence service life-cycle flexibility, namely (1) technological inertia; (2) internal organizational inertia; (3) external organizational inertia; (4) customer inertia toward changes in the service package; and (5) customer inertia toward changes in the service interaction design. These inertia factors are traced back to the service development process in order to suggest design practices that may increase the service life-cycle flexibility. [source] | |||||||||||||||||||