Gotowa bibliografia na temat „Multiple two-way design information exchanges”
Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych
Zobacz listy aktualnych artykułów, książek, rozpraw, streszczeń i innych źródeł naukowych na temat „Multiple two-way design information exchanges”.
Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.
Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.
Artykuły w czasopismach na temat "Multiple two-way design information exchanges"
1
Mujumdar, Purva, i J. Uma Maheswari. "Alternate beeline diagramming method network analysis for interdependent design entities". Engineering, Construction and Architectural Management 26, nr 1 (18.02.2019): 66–84. http://dx.doi.org/10.1108/ecam-07-2017-0112.
Pełny tekst źródłaStreszczenie:
Purpose The design phase is generally characterized with two-way multiple information exchanges/overlaps between the interdependent entities. In this paper, entity is a generic term to represent teams, components, activities or parameters. Existing approaches can either capture a single overlap or lack practical application in representing multiple overlaps. The beeline diagraming method (BDM) network is efficient in representing multiple overlaps for construction projects. However, it considers any entity as indivisible and cannot distinguish partial criticality of entities. In reality, the design phase in any construction project is driven by need basis and often has numerous interruptions. Hence, there is a need to develop an alternate network analysis for BDM for interruptible execution. The paper aims to discuss these issues. Design/methodology/approach A pilot study is conducted to formulate the hypothetical examples. Subsequently, these hypothetical BDM examples are analyzed to trace a pattern for criticality. This pattern study along with the existing precedence diagramming method network analysis enabled to derive new equations for forward pass, backward pass and float. Finally, the proposed concepts are applied to two design cases and reviewed with the design experts. Findings The proposed network analysis for BDM is efficient for interruptible entity execution. Practical implications The proposed BDM network is an information-intensive network that enables the design participants to view the project holistically. Application to two distinct cases emphasizes that the concept is generic and can be applied to any project that is characterized with beelines. Originality/value An alternate network analysis for BDM is investigated for interruptible entity execution. This study also clarifies the related concepts – interdependency, iteration, overlaps and multiple information exchanges/linkages.
2
Darsena, Donatella, Giacinto Gelli, Ivan Iudice i Francesco Verde. "Separable MSE-Based Design of Two-Way Multiple-Relay Cooperative MIMO 5G Networks". Sensors 20, nr 21 (4.11.2020): 6284. http://dx.doi.org/10.3390/s20216284.
Pełny tekst źródłaStreszczenie:
While the combination of multi-antenna and relaying techniques has been extensively studied for Long Term Evolution Advanced (LTE-A) and Internet of Things (IoT) applications, it is expected to still play an important role in 5th Generation (5G) networks. However, the expected benefits of these technologies cannot be achieved without a proper system design. In this paper, we consider the problem of jointly optimizing terminal precoders/decoders and relay forwarding matrices on the basis of the sum mean square error (MSE) criterion in multiple-input multiple-output (MIMO) two-way relay systems, where two multi-antenna nodes mutually exchange information via multi-antenna amplify-and-forward relays. This problem is nonconvex and a local optimal solution is typically found by using iterative algorithms based on alternating optimization. We show how the constrained minimization of the sum-MSE can be relaxed to obtain two separated subproblems which, under mild conditions, admit a closed-form solution. Compared to iterative approaches, the proposed design is more suited to be integrated in 5G networks, since it is computationally more convenient and its performance exhibits a better scaling in the number of relays.
3
Nguyen, Do Dung, i Qingchun Chen. "On the Energy Efficient Multiple Pair Communications in Two-Way Massive MIMO Relaying Networks with Imperfect CSI". Journal of Science and Technology: Issue on Information and Communications Technology 3, nr 1 (31.03.2017): 9. http://dx.doi.org/10.31130/jst.2017.33.
Pełny tekst źródłaStreszczenie:
Multiple-pair two-way communication in massive multiple-input multiple-output (MIMO) relay network is studied in this article wherein K single antenna source nodes exchange their messages to the corresponding K single antenna destination nodes with the help of one relay provisioned with N(N >> K) antenna array. And the energy efficient two-way multiple-pair communication in Massive MIMO relay network through the precoding design at relay is addressed. It is shown hat, even with the imperfect channel state information at the relay, the maximum ratio combining-maximum ratio transmission (MRC/MRT) precoding and the zero-forcing reception zero-forcing transmission (ZFR/ZFT) precoding at relay can be employed to mitigate inter-pair interference. The asymptotic signal to interference plus noise ratio (SINR) analysis of four power-scaling schemes in the regime of very large number of antenna at relay shows that, the inter-pair interference can be eliminated, the effect of the small-scale fading can be averaged out; the total transmit power consumption can be reduced for a better energy efficient multiple-pair communication when the number of antenna at relay is large enough. Moreover, when the transmit power at relay is sufficient, both the MRC/MRT and the ZFR/ZFT based relaying strategy can effectively cope with the channel state information (CSI) error. Simulation results are presented to validate our analysis.
4
Shu, Qiguan, Thomas Rötzer, Andreas Detter i Ferdinand Ludwig. "Tree Information Modeling: A Data Exchange Platform for Tree Design and Management". Forests 13, nr 11 (19.11.2022): 1955. http://dx.doi.org/10.3390/f13111955.
Pełny tekst źródłaStreszczenie:
Trees integrated into buildings and dense urban settings have become a trend in recent years worldwide. Without a thoughtful design, conflicts between green and gray infrastructures can take place in two aspects: (1) tree crown compete with living space above ground; (2) built underground environment, the other way round, affect tree’s health and security. Although various data about urban trees are collected by different professions for multiple purposes, the communication between them is still limited by unmatched scales and formats. To address this, tree information modeling (TIM) is proposed in this study, aiming at a standardized tree description system in a high level of detail (LoD). It serves as a platform to exchange data and share knowledge about tree growth models. From the perspective of architects and landscape designers, urban trees provide ecosystem services (ESS) not only through their overall biomass, shading, and cooling. They are also related to various branching forms and crown density, forming new layers of urban living space. So, detailed stem, branch and even root geometry is the key to interacting with humans, building structures and other facilities. It is illustrated in this paper how these detailed data are collected to initialize a TIM model with the help of multiple tools, how the topological geometry of stem and branches in TIM is interpreted into an L-system (a common syntax to describe tree geometries), allowing implementation of widely established tree simulations from other professions. In a vision, a TIM-assisted design workflow is framed, where trees are regularly monitored and simulated under boundary conditions to approach target parameters by design proposals.
5
Cashman, Timothy G. "“In spite of the way the world is”". International Journal of Comparative Education and Development 22, nr 1 (27.08.2019): 16–29. http://dx.doi.org/10.1108/ijced-11-2018-0050.
Pełny tekst źródłaStreszczenie:
Purpose The purpose of this paper is to provide comparative perspectives on how educators teach issues that affect two countries with a history of governmental tensions. The investigation examines how teachers in Cuban classrooms engage in discourses on the recent developments in Cuban and US relations, including the teaching of historical and territorial issues. This research considers border pedagogy, critical border dialogism and critical border praxis as approaches for those who educate on the effects of US international policies. Ultimately, pragmatic hope offers the possibilities for an emergent third space for Cuban and US relations, including educational exchanges. Design/methodology/approach The research took place in Cuba during an educational exchange to Cuban secondary and university educational sites. Cuban educators of pedagogy and social education engaged in dialogue and shared information on how they address US international policies during their classroom discussions. The researcher employed methodologies that followed Stake’s (2000) model for a substantive case study. Impressions, data, records and salient elements at the observed site were recorded. Transcriptions were documented for face-to-face interviews and hour-long focus group sessions. Participants also logged responses to written survey questions. The study focused on how Cuban educators taught, discussed and addressed the US international policies in classrooms. Findings Heteroglossia, meliorism, critical cosmopolitanism, nepantla, dialogic feminism and pragmatic hope were components of the data analysis. Heteroglossia was an essential consideration throughout the study as multiple interpretations of Cuban and US interconnectedness emerged. Meliorism factored into Cuban educators’ commitments to their professions. Critical cosmopolitanism developed as educators put forth different conceptualizations of human rights and democracy. Nepantla emerged as a key aspect as indigenous and self-determined viewpoints emerged. Dialogic feminism was preeminent as patriarchy continues to exist, despite a new awareness of gender roles and gender violence. Pragmatic hope offers possibilities for a transnational community of inquiry and collaboration. Research limitations/implications The most obvious limitation to this study is, as a case study, the limited scope of perception. Practical implications If future relations between Cuban and the US are deemed uncertain, critical border praxis has an essential role in addressing new sets of uncertainties. This study recommends that educational communities engage in discourses addressing ongoing issues facing the dynamic, fluid border environs. Critical border praxis provides conditions in which we, as educators and members of diverse communities of learners, become cross-borders and broaden the possibilities to achieve what had been considered the unattainable. Resources need to be prioritized and redirected toward educational efforts on national, state and local levels so critical border praxis becomes a reality. Social implications Through transnational and transborder engagements, such as educational exchanges, both US and Cuban educators are provided opportunities to reflect on the strengths and weaknesses of their own educational systems. The role of education, formal and informal, then serves to transform perceptions one-by-one, school-by-school, community-by-community and to influence policy makers to reconstruct education country-by-country as part of pragmatic hope for an enduring Pax Universalis. Pax Universalis serves as a third space where transborder students and educators alike are positioned as co-creators of knowledge and agents of change. Originality/value This study proposes a new emergent third space resulting from critical border dialogism that utilizes border pedagogy and critical pedagogies of place to seek new zones of mutual respect and cooperation among educators. Common educational understandings are the key starting point for a critical border praxis that facilitates ongoing dialogue between the two countries and offers pragmatic hope for the futures of both nations and opportunities to ameliorate relationships. An emergent third space is possible through sustained critical border praxis, a praxis that seeks to address points of contention and the bridges that need crossing between the two neighboring countries.
6
Yee, Rachel W. Y., Thomas Y. Choi, Andy C. L. Yeung i T. C. E. Cheng. "High-contact services of the transient and high-uncertainty type: managing customer experience". Industrial Management & Data Systems 122, nr 3 (15.02.2022): 752–73. http://dx.doi.org/10.1108/imds-07-2021-0417.
Pełny tekst źródłaStreszczenie:
PurposeMany small-to-medium sized service shops (e.g. jewelry shops, fine-dining restaurants etc.) operate in a unique service environment. They often face customers in transit (i.e. transient delivery) and with minimal information of their preferences (i.e. high uncertainty). This study investigates how such shops create service experience to customers by focusing on three constructs, namely, customer orientation, management commitment to service quality and quality of leader-member exchange in service systems with the uncertain and transient nature. Building on a systems approach of service experience design, the authors examine all possible effects (main effects and two-way and three-way interaction effects) on customer experience. Specifically, to frame the two-way and the three-way interaction effects, the authors adopt the contingency and configuration approaches, respectively.Design/methodology/approachThis study employs a multiple respondent approach involving managers, employees and customers to collect data from 225 service shops in Hong Kong. Hierarchically moderated regression analysis is employed to analyze the collected data.FindingsContrary to our initial conceptualization, most of the direct effects and two-way interaction effects among the three constructs are insignificant. The authors do, however, uncover a significant effect of the three-way interaction term. The authors analyze the results from the configuration perspective.Originality/valueThe finding suggests that the configuration approach is necessary to determine the configuration concerning how design elements align with one another to generate an integrative effect on customer experience. The authors conclude that for high-contact services of the transient and high-uncertainty type, all three constructs must operate simultaneously to evoke favorable customer experience. Customer experience is holistically developed in a service system with high-uncertainty and transient nature, requiring simultaneous alignment across a range of design choices among those involved in service delivery (manager, employee and customer).
7
Crisan, Alina, T. Klein, R. Rohlsberger, E. Burkel i O. Crisan. "Alternative Solutions for Data Storage Using Magnetic Films Exchange-Coupled Through Non-Magnetic Layer". International Journal of Research in Science 3, nr 2 (24.06.2017): 1. http://dx.doi.org/10.24178/ijrs.2017.3.2.01.
Pełny tekst źródłaStreszczenie:
Abstract—We describe an alternative solution to encode information in magnetic films that goes beyond the conventional way of digital magnetic recording. In our approach the information is stored via a continuous variable, namely the remanent coupling angle between two magnetic films that are separated by a nonmagnetic spacer layer. Using the technique of nuclear resonant scattering (NRS) [1, 2] we show with good precision, how this coupling angle can be conveniently adjusted with high degree of remanence by shortly applied external magnetic fields. Moreover this effect is explained using a micromagnetic model [3, 4]. Extremely important for future applications of this concept, we demonstrate, that the remanent coupling angles can be read out via magneto-optical or magneto-resistance effects. In principle, this approach allows to design novel memory cells for advance data storage devices, where multiple states per unit cell can be generated and recorded.
Index Terms—Magnetic films, data storage, FePt
8
Bodolica, Virginia, i Martin Spraggon. "Life on heels and making deals". Management Decision 53, nr 5 (15.06.2015): 984–1004. http://dx.doi.org/10.1108/md-10-2013-0552.
Pełny tekst źródłaStreszczenie:
Purpose – The purpose of this paper is to discuss issues related to entrepreneurial undertakings of women in the United Arab Emirates (UAE) with the purpose of contributing to the development of context-dependent knowledge of entrepreneurship. Focussing on the life narratives of two expatriate female business-owners who created a common enterprise, the case permits to uncover and critically assess the different stages of the entrepreneurial process in a unique cultural setting. Design/methodology/approach – The authors employed a narrative case study approach to allow for a rich contextual information to emerge from the detailed accounts of individual lives and entrepreneurial experiences of case protagonists. Data were gathered from multiple sources (e.g. interviews, e-mail exchanges, web sites) and subsequently analyzed and coded into prevalent themes by two researchers and one assistant independently, permitting to achieve both data and investigator triangulation. Findings – This case elucidates the entrepreneurial journey of two female expatriates who launched their individual businesses and joined efforts in the establishment of Heels and Deals (H & D), a network that helps UAE-based women-entrepreneurs reach their professional aspirations within a patriarchal society. The cofounders are now at a cross-roads where they have to make a choice between running their own businesses to secure their sustainability and focussing on H & D to lead its international expansion. The narratives of the case protagonists allow contrasting the discovery and creation views of entrepreneurship and examining the role of leadership skills and personality characteristics in entrepreneurial success. Originality/value – Despite an increasing number of businesswomen in the UAE, little is known about the way they approach the complex entrepreneurial process and deal with challenges and opportunities faced on the road. The case bridges this gap by offering the possibility to reflect on how expatriate female entrepreneurs in a Middle-Eastern context balance multiple trade-offs to succeed in their business-related endeavors.
9
Yang, Chieh Yun, Dengming Xie i Jose Weng Chou Wong. "CHALLENGES AND BENEFITS OF EXPERIENTIAL LEARNING: THE CASE OF OVERSEAS EXCHANGE PROGRAMS". Advanced Education, nr 19 (29.12.2021): 79–88. http://dx.doi.org/10.20535/2410-8286.239232.
Pełny tekst źródłaStreszczenie:
This article highlights an increasingly popular form of experiential learning, namely overseas exchange programs. Experiential learning is regarded as a valuable way to link up theoretical knowledge and practical skills in hospitality and tourism education. Although some studies have addressed the importance of experiential learning, the factors influencing students’ choice of overseas exchange programs, and the challenges and benefits of students’ experiential learning are still unclear, especially on the overseas exchange programs. The purpose of this study is to reveal the whole picture of overseas exchange programs by utilizing experiential learning cycle theory, and further understand students’ perception of overseas experiential learning. By employing quantitative and qualitative methods, including questionnaire survey and in-depth interviews with students who have participated in the overseas exchange programs and content analysis of program information, this study analyzes the differences of factors considered by males and females in choosing overseas exchange programs, and displays the four-stage learning process of experiential learning in overseas exchange programs and identifies two themes of challenges (living challenges and learning challenges) and five themes of benefits (cognitive development, behavioural change, multiple skill development, social bonding development, academic competitiveness & employability enhancement) for experiential learning for students majoring in Hospitality and Tourism. The study enriches our understandings of the experiential learning cycle theory and provides insights to educators in the design of future overseas exchange programs.
10
Brennan, Niamh M., Collette E. Kirwan i John Redmond. "Accountability processes in boardrooms". Accounting, Auditing & Accountability Journal 29, nr 1 (18.01.2016): 135–64. http://dx.doi.org/10.1108/aaaj-10-2013-1505.
Pełny tekst źródłaStreszczenie:
Purpose – The purpose of this paper is to understand the influence of information and knowledge exchange and sharing between managers and non-executive directors is important in assessing the dynamic processes of accountability in boardrooms. By analysing information/knowledge at multiple levels, invoking the literature on implicit/tacit and explicit information/knowledge, the authors show that information asymmetry is a necessary condition for effective boards. The authors introduce a conceptual model of manager-non-executive director information asymmetry as an outcome of the interpretation of information/knowledge-sharing processes amongst board members. The model provides a more nuanced agenda of the management-board information asymmetry problem to enable a better understanding of the role of different types of information in practice. Design/methodology/approach – The analysis of information/knowledge exchange, sharing and creation and the resultant conceptual model are based on the following elements: manager-non-executive director information/knowledge, management-board information/knowledge and board dynamics and reciprocal processes converting implicit/tacit into explicit information/knowledge. Findings – The paper provides new insights into the dynamics of information/knowledge exchange, sharing and creation between managers and non-executive directors (individual level)/between management and boards (group level). The authors characterise this as a two-way process, back-and-forth between managers/executive directors and non-executive directors. The importance of relative/experienced “ignorance” of non-executive directors is revealed, which the authors term the “information asymmetry paradox”. Research limitations/implications – The authors set out key opportunities for developing a research agenda from the model based on prior research of knowledge conversion processes and how these may be applied in a boardroom setting. Practical implications – The model may assist directors in better understanding their roles and the division of labour between managers and non-executive directors from an information/knowledge perspective. Originality/value – The authors apply Ikujiro Nonaka’s knowledge conversion framework to consider the transitioning from individual implicit personal to explicit shared information/knowledge, to understand the subtle processes at play in boardrooms influencing information/knowledge exchange, sharing and creation between managers and non-executive directors.
Rozprawy doktorskie na temat "Multiple two-way design information exchanges"
1
Mujumdar, Purva. "Modeling design interdependency and iteration for multiple two-way information exchanges in construction projects". Thesis, 2017. http://localhost:8080/iit/handle/2074/7489.
Pełny tekst źródłaCzęści książek na temat "Multiple two-way design information exchanges"
1
Targowski, Andrew. "Asymmetric Communication". W Information Technology and Societal Development, 345–62. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-60566-004-2.ch015.
Pełny tekst źródłaStreszczenie:
This chapter defines a framework for the crosscultural communication process, including efficiency and cost. The framework provides some directions for dialogue among civilizations, which is one of the main routes toward creation of the universal civilization. A developed architectural design of the cross-cultural communication process is based on a universal system approach that not only considers the complexities of the various cultural hierarchies and their corresponding communication climates, but also compares and quantifies the cultural-specific attributes with the intention of increasing efficiency levels in crosscultural communication. The attributes for two selected cultures (Western-West and Egyptian) are estimated in a normative way using expert opinions, measuring on a scale from 1 to 5 with 5 as the best value. Quantifying cultural richness (R), cultural efficiency (?), modified cultural differences (DMC, and cultural ability (B) reflects how a given culture’s strength can overcome cultural differences and enhance its competitive advantage (V). Two components of the culture factor cost, explicit (CE) and implicit (CI), are defined, examined and quantified for the purposes not only of controlling the cost of doing business across cultures, but also to determine the amount of investment needed to overcome cultural differences in a global economy. In this new millennium, global organizations will increasingly focus on the critical value of the cross-cultural communication process, its efficiency, its competence, its cost of doing business. In order to successfully communicate crossculturally, knowledge and understanding of such cultural factors as values, attitudes, beliefs and behaviors should be acquired. Because culture is a powerful force that strongly influences communication behavior, culture and communication are inseparably linked. Worldwide, in the last 20 years, countries have experienced a phenomenal growth in international trade and foreign direct investment. Similarly, they have discovered the importance of crosscultural communication. As a result, practitioners and scholars are paying attention to the fact that cultural dimensions influence management practices (Hofstede, 1980; Child, 1981; Triandis, 1982; Adler, 1983; Laurent, 1983; Maruyama, 1984). In recent years, empirical work in the crosscultural arena has focused on the role of culture on employee behavior in communicating within business organizations (Tayeb, 1988). But current 346 Asymmetric Communication work on cross-cultural business communication has paid little attention to either (a) how to adapt these seminal works on general communication to the needs of intercultural business or (b) how to create new models more relevant to cross-cultural business exchanges (Limaye & Victor, 1991, p. 283). There are many focused empirical studies on cross-cultural communication between two specific cultures (e.g., Wong & Hildebrandt, 1983; Halpern, 1983; Victor, 1987; Eiler & Victor, 1988; Varner, 1988; Victor & Danak, 1990), but such results must be arguable when extrapolated across multiple cultures. The prevailing western classical linear and process models of communication (Shannon & Weaver, 1949; Berlo, 1960) neglect the complexity of cross-cultural communication. Targowski and Bowman (1988) developed a layer-based pragmatic communication process model which covered more variables than any previous model and indirectly addressed the role of cultural factors among their layer-based variables. In a similar manner, the channel ratio model for intercultural communication developed by Haworth and Savage (1989) has also failed to account completely for the multiple communication variables in cross-cultural environments. So far, there is no adequate model that can explain the cross-cultural communication process and efficiency, let alone estimate the cost of doing business with other cultures worldwide.
2
Roy, Satadru, William A. Crossley i Samarth Jain. "A Hybrid Approach for Solving Constrained Multi-Objective Mixed-Discrete Nonlinear Programming Engineering Problems". W Optimization Problems in Engineering [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.97054.
Pełny tekst źródłaStreszczenie:
Several complex engineering design problems have multiple, conflicting objectives and constraints that are nonlinear, along with mixed discrete and continuous design variables; these problems are inherently difficult to solve. This chapter presents a novel hybrid approach to find solutions to a constrained multi-objective mixed-discrete nonlinear programming problem that combines a two-branch genetic algorithm as a global search tool with a gradient-based approach for the local search. Hybridizing two algorithms can provide a search approach that outperforms the individual algorithms; however, hybridizing the two algorithms, in the traditional way, often does not offer advantages other than the computational efficiency of the gradient-based algorithms and global exploring capability of the evolutionary-based algorithms. The approach here presents a hybridization approach combining genetic algorithm and a gradient-based approach with improved information sharing between the two algorithms. The hybrid approach is implemented to solve three engineering design problems of different complexities to demonstrate the effectiveness of the approach in solving constrained multi-objective mixed-discrete nonlinear programming problems.
3
Karoui, Kamel, i Fakher Ben Ftima. "Effectiveness of Web Services". W Electronic Services, 1754–62. IGI Global, 2010. http://dx.doi.org/10.4018/978-1-61520-967-5.ch106.
Pełny tekst źródłaStreszczenie:
With the development of the Internet, the number of people buying, selling, and performing transactions is expected to increase at a phenomenal rate. The emergence of e-commerce applications has resulted in new net-centric business models. This has created a need for new ways of structuring applications to provide cost-effective and scalable models. Mobile Agents (MA) systems are seen as a promising paradigm for the design and implementation of distributed applications, including e-commerce. MA are also useful in applications requiring distributed information retrieval because they move the location of execution closer to the data to be processed. While MA have generated considerable excitement among the research community, they have not been applied into a significant number of real applications. Web services (WS) are emerging as a dominant paradigm for constructing distributed business applications and enabling enterprise-wide interoperability. A critical factor to the overall utility of WS is a scalable, flexible and robust discovery mechanism; an application can be built by integrating multiple services together to make a more efficient service. WS represent a major development in the e-commerce sector. They enable companies to capitalize on their existing architecture by making their application services accessible via the Internet. The application of MA and WS technologies to e-commerce will provide a new way to conduct business-to-business (B2B), business-to-consumer (B2C), and consumer-to-consumer transactions (C2C) and facilitate the communication between heterogeneous environments. In this article, we first focus on these two technologies of actuality and show their integration in an e-commerce system. Second, we present different kinds of interaction between MA and WS and study their effect on application performance. We also study an example that illustrates an e-commerce system including three categories of transactions: -Shopping transactions: a customer delegates one MA for research and purchase of articles online. The MA will interact with available WS to find the article and its best price. -Salesman transactions: to valorize their products, WS will invoke MA to make publicity for the customers. -Auction transactions: for this type of transaction, a MA (respectively a WS) can sell and buy a product from/to others MA (WS) by auction. Finally, we conclude with a discussion on our inferences and their implications. This work is structured as follows: Section “background” reviews the notions of e-commerce system, WS and MA paradigms. Section “Web services and mobile agents’ technologies on e-commerce system” presents the integration of these two paradigms on the e-commerce system. In section “performance evaluation,” we evaluate the performances of our approach and we study an illustrated example in the section “a case study.” The section “future trends” presents our future perspectives and we end this work with the “conclusion” in the last section.
Streszczenia konferencji na temat "Multiple two-way design information exchanges"
1
Aguirre, Milton E., i Mary Frecker. "Size and Shape Optimization of a 1.0mm Multifunctional Forceps-Scissors Instrument for Minimally Invasive Surgery". W ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35367.
Pełny tekst źródłaStreszczenie:
A size and shape optimization routine is developed and implemented on a 1 mm multifunctional instrument for minimally invasive surgery. The instrument is a compliant mechanism, without hinges, capable of both grasping and cutting. Multifunctional instruments have proven to be beneficial in the operating room because of their ability to perform multiple tasks, thereby decreasing the total number of instrument exchanges in a single procedure. In addition, with fewer exchanges the risk of inadvertent tissue trauma as well as overall surgical time and costs are reduced. The focus of the paper is to investigate the performance effects of allowing the cross-sectional area along the length of the device to vary. This is accomplished by defining various cross-sectional segments along the device in terms of parametric variables (Wi) and optimizing the dimensions to provide a sufficient forceps jaw opening while maintaining adequate cutting and grasping forces. Two optimization problems are considered. First, all parametric segments are set equal to one another permitting all cross-sections to vary uniformly and achieving size optimization. Second, each segment is defined as a separate design variable to allow segments to vary independently and thereby achieving shape optimization. Due to the device’s symmetry, one-half of the mechanism is modeled as a cantilever beam undergoing large deformation. ANSYS’ optimization module is employed using the first order method because it is capable of performing optimization considering non-linear deformation and multiple loading conditions. Finally, prototypes are fabricated using wire EDM and prototype evaluations are conducted to compare size versus shape optimization, and to validate ANSYS as the solution method.
2
Gola, Muzio M., Marcelo Braga dos Santos i Tong Liu. "Measurement of the Scatter of Underplatform Damper Hysteresis Cycle: Experimental Approach". W ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70269.
Pełny tekst źródłaStreszczenie:
This work presents the design and the calibration of a test rig specially developed to measure the in-plane forces transferred between the blade platforms through the under-platform damper and their relative displacement. This device is composed of two distinct parts each one representing a platform. One is static and accommodates the load cells which measure the forces in two perpendicular directions; the other produces the in-plane motion, actuated by two piezoelectric stacks. The device reproduces any in-plane relative displacement between two adjacent platforms and measures both the relative motion between platforms and the forces they reciprocally transmit. The damper, placed between the two platform simulators, is loaded by thin wires pulled by dead weights, a way to apply the equivalent of the centrifugal force. The mechanical features of the rig are described and discussed with their influence on the measurements. An example application is given. Tests aim at assessing the role of “outer” measured parameters (such as frequency and amplitude of platform-to-platform relative displacement, damper external load (simulating the in-service centrifugal load), damper geometry) on the shape and area of the hysteresis cycle and therefore the damper real and imaginary stiffness components. It is found that equal values for the supposedly governing “outer” parameters may lead to a multiplicity of markedly different hysteresis cycles. The same happens if platform-to-platform force is considered rather than displacement. It is shown how the system evolves through the many possible equilibrium conditions. It is also shown how the forces between damper and underplatforms are calculated. It is suggested that the measurement of platform-to-platform hysteresis cycles is an effective way to synthetically approach the problem of elastic coupling and energy dissipation between adjacent blades, while detailed knowledge of forces exchanged between the underplatform and damper contact surfaces will be a valuable tool toward the better knowledge of damper micromechanics, perhaps opening a better way to finding damper geometries capable of reducing the scatter of hysteresis cycle shape and area. Two dampers are investigated, at this stage, in order to assess the dependence of the above said behavior on the damper geometry. Results show that dampers exhibit multiple behaviors under the same input conditions. They may be alarming because they show that the damper-platforms system always converges to the solution with the lowest hysteresis area, a fact which deserves of course deeper investigations.
3
Lambiase, Nicole E., Douglas J. Nelson, Frank J. Falcone, Michael A. Wahlstrom i Kristen G. De La Rosa. "Using Online Resources for an Advanced Vehicle Technology Engineering Competition". W ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37934.
Pełny tekst źródłaStreszczenie:
Advanced Vehicle Technology Competitions have adopted an online collaboration system to coordinate information sharing and dissemination among hundreds of people from numerous organizations and across multiple countries, including universities, competition organizers, and sponsors involved in the competitions. Microsoft SharePoint is a collection of software elements that includes web browser based collaboration functions, process management modules, search modules and a document-management platform that serves as the foundation for this online collaboration system. SharePoint is used to host a secure web site that accesses shared workspaces, information stores and documents, as well as threaded discussion forums. Users can manipulate controls called “web parts” or interact with pieces of content such as lists and document libraries. The overall team-based engineering education strategy is facilitated throughout the three year EcoCAR program by a two way flow of information between the teams and organizers. Safety and design rules are updated and posted for teams to access. Each team has their own secure document library area for posting required progress reports, design reports, safety documentation, and technical report deliverables that are scored as part of the competition. Scoring results with comments are returned to each team under the team specific site. Proprietary vehicle and component data are also made available, and can be restricted to only those teams that have approved non disclosure agreements with the sponsor. Specific subject and component-based forums are used for asynchronous, threaded exchange of information and questions to subject matter experts. Issues and solutions discovered by students are shared among all teams. The SharePoint Online Collaboration system has significantly improved the information-sharing, evaluation and communications capabilities of the Advanced Vehicle Technology Competitions across a vast audience. This has enabled us to significantly enhance the technical scope of the program and improve the educational value to the university participants.
4
Szykman, Simon, Steven J. Fenves, Walid Keirouz i Steven B. Shooter. "A Foundation for Interoperability in Next-Generation Product Development Systems". W ASME 2000 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/detc2000/cie-14622.
Pełny tekst źródłaStreszczenie:
Abstract U.S. industry spends billions of dollars as a result of poor interoperability between computer-aided engineering software tools. While ongoing standards development efforts are attempting to address this problem in today’s tools, the more significant demand in next-generation tools will be for representations that allow information used or generated during various product development activities to feed forward and backward into others by way of direct electronic interchange. Although the next generation of tools has the potential for greatly increased benefits, there is also a potential for the cost of poor interoperability to multiply. The goal of this work is to develop representations of information that are unavailable in traditional CAD/CAM/CAE tools to support the exchange of product information in a distributed product development environment. This paper develops a vision of next-generation product development systems and provides a core representation for product development information on which future systems can be built.
5
Pupezescu, Valentin, Radu Radescu i Sever Pasca. "DESIGN AND IMPLEMENTATION OF AN ONLINE LEARNING APPLICATION TO STUDY A VIRTUAL E-BANKING SYSTEM". W eLSE 2017. Carol I National Defence University Publishing House, 2017. http://dx.doi.org/10.12753/2066-026x-17-107.
Pełny tekst źródłaStreszczenie:
This paper presents a case study of designing and using an Internet Banking Web application. Its goal is the online learning of administration and deployment of a virtual e-banking system. The application is developed using a three-tier architecture using Apache, PHP and MySQL. The application has all the functionalities of an actual e-banking real-life system. In addition, the paper focuses on highlighting the security problems that may occur and proposes solutions for them. For app implementation the WAMP (Windows, Apache, MySQL and PHP) system was used. Apache is an open source HTTP Server having the following main features: it allows server side programming, virtual hosting and especially the fact that it can be dynamically added modules to extend its functionality (feature that are seized in the paper). MySQL was chosen because it is the best known and widespread database management system. PHP was chosen because of its main advantages: simplicity, efficiency and flexibility. The application was developed using object-oriented programming. This application is the foundation for creating e-learning content to study the management systems of virtual banking. The application was implemented as an independent module into the online e-learning platform called Easy-Learning (an original product of the Department of Applied Electronics and Information Engineering from the University Politehnica of Bucharest). After testing the app, students suggested some improvements, such as real-time validation of user input or centralization of accounts statement, which was taken into account in completing the application. Two MySQL databases are used in this application: the database that stores all user information and account information, and the internal database for token used for authentication. Normally, each token ought to have its own database, but for simplicity a common database for all tokens was used. The implementation solution is that of a virtual event-based token and not time-based token, due to its advantages: server synchronization using an incremental counter, incrementing the counter is not performed without user’s intervention, there is no need for server timing synchronization, well-known cryptographic algorithms are used, and it does not require entering a PIN code for activation (as in the case of hardware token). The administrator has a specific menu, more complex compared to users’ menu. The administrator has additional rights, such as viewing, adding and deleting users, creating their accounts, and the ability to create a backup of the database tables and their restoration. The administrator is the only one that can add or delete users; there is no ability for users to register themselves in order to use the e-banking services. The administrator has access to the user menu, but not vice versa. From the administrator's point of view, analyzing user activity is easily performed using the menu of viewing the user operations history. This way, the administrator can oversee if a user has completed the system requirements or has experienced difficulties in carrying out banking operations. Also, the administrator can modify the user accounts balance when it is needed and can unlock user accounts experiencing authentication problems. From the user point of view, the application offers the following available financial operations: viewing accounts, opening or liquidation of deposits, paying bills or transfers between accounts, and foreign exchange. Currency exchange is updated following the rating of the National Bank of Romania, and this is a strong point of application. The web application allows users to access virtual Internet Banking accounts similar to real-life bank accounts and to accomplish financial transactions in a secure environment. There are multiple security filters, as well as financial operations that customers can achieve online. To improve user experience, a real-time validation of user input data is performed in order to inform the users when placing data in a non-specific format. Another advantage of the app is that all the IT tools and technologies used are freeware software. Overall, a free, interactive application is obtained, where the users can learn and practice in a virtual environment banking operations and procedures, and the administrator has all the necessary means to supervise and manage the whole process of learning and practical application of knowledge acquired.
6
Kreimeyer, Matthias, Stefanie Braun, Matthias Gu¨rtler i Udo Lindemann. "Relating Two Domains via a Third: An Approach to Overcome Ambiguous Attributions Using Multiple Domain Matrices". W ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/detc2008-49249.
Pełny tekst źródłaStreszczenie:
Design Structure Matrices (DSM) and Domain Mapping Matrices (DMM) are commonly used to model and analyze the relationships within one domain (DSM) or between two domains (DMM). Being assembled into one larger square matrix, having DSMs on its diagonal and DMMs in all other fields, a so-called Multiple Domain Matrix (MDM) is formed. When relating two domains using a DMM, a problem arises when the nature of one individual relationship between the two domains is to be described. Usually, this is modeled by annotating each relationship with the additional information, much like comments in spreadsheet software. This, however, is yet impossible if the relationships should be in matrix notation to allow for algorithmic matrix analyses. Equally, this way, the annotations are not accessible as elements of another matrix, e.g. as DSM. This paper suggests a generic principle to solve the described problem in a way consistent with the matrix methodology. It proposes an approach using MDM and is thereby able to unambiguously provide the nature of each relationship between the elements of two domains. As a DSM is a mere case of a DMM having two identical domains, the approach proposed can equally be used to enrich the relationships within a DSM.
7
Mitchell, Mary J. "The Use of Application Model Validation in Testing a Proposed Standard". W ASME 1992 International Computers in Engineering Conference and Exposition. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/edm1992-0140.
Pełny tekst źródłaStreszczenie:
Abstract From an information system development perspective, logical data modeling techniques have traditionally served in two roles. The first role is as a method of describing the information requirements of an application system. The second role is as a mechanism for integrating the requirements from a number of applications into a single logical and consistent schema so that data can be shared by multiple applications. The Standard for the Exchange of Product Model Data (STEP) project is developing an international standard1 which uses data modeling as the basis for a multi-national and multi-enterprise integration effort. STEP is designed to provide a complete, unambiguous, computer-readable definition of the characteristics of a product throughout its life cycle. STEP product definition specifications are implementation independent, though implementation interface techniques provide the communication mechanisms for applications using file exchanges2 or shared databases. Because of the diversity of applications that are within the scope of STEP, the integration generally causes extensive changes but the changes are justified if all of the information requirements are supported.
8
Cramer, David, Uma Jayaram i Sankar Jayaram. "A Collaborative Architecture for Multiple Computer Aided Engineering Applications". W ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/detc2002/cie-34498.
Pełny tekst źródłaStreszczenie:
In this paper, we describe the need, design, and implementation of a Collaborative Architecture. The Collaboration Architecture addresses the need for multiple Computer Aided Engineering applications to exchange data packets directly with each other in an effort to decrease the design cycle time. This architecture incorporates three components in its design, a server, a controller, and multiple members. The members generate and use the data packets. The server maintains and distributes the data packets between the members. The controller component determines which CAE users are generating or using which data sets. The member component has been implemented with three subcomponents, a pusher application, a receiver application, and the CAE application which uses / generates the data packets. For the local member communication, the Collaborative Architecture uses shared memory. For inter-component communication, the architecture uses CORBA. Finally, this paper describes the implementation of two Computer Aided Applications, Dv/Mockup and an Immersive Virtual Design Environment.
9
Camburn, Bradley A., Karen H. Sng, K. Blake Perez, Kevin Otto, Kristin L. Wood, Daniel Jensen i Richard Crawford. "The Way Makers Prototype: Principles of DIY Design". W ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46295.
Pełny tekst źródłaStreszczenie:
Recent research demonstrates the importance of prototyping to support early stage design efforts. There remains a substantial opportunity to provide tools that codify the leap between the logical objectives of the design effort, and an individual’s intuitive design and fabrication experience. This study investigates project articles on the open source, Do-It-Yourself (DIY) design repository, Instructables.com. The database contains guides for producing low cost functional prototypes. Many entries in the repository include documentation of the design process along with instructions for fabrication. Through a systematic research methodology, we extract five prototype design and fabrication principles from articles in the database. An online crowdsourced assessment enables inter-rater testing, with multiple parallel raters. This assessment validates presence of the principles in the database. A controlled study was conducted in which one of two groups was exposed to the principles. This study evaluates connectivity, successful adoption of the principles by participants in the experimental group, and resulting design performance effects. Two case studies of prototyping are also provided. Observations indicate that application of the principles positively impacts prototyping outcomes. A potential area for improvement is edge case evaluation, i.e. principles only found in a single extraordinary sample.
10
Larson, Blake T., Arthur G. Erdman i Nikolaos V. Tsekos. "An MRI-Compatible Probe Exchanger for Early Diagnosis and Treatment of Breast Cancer". W ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57047.
Pełny tekst źródłaStreszczenie:
The objective of this project is to develop a device to exchange interventional probes such as biopsy needles, local anesthesia, ablation tools, and lesion removal devices to perform multiple procedures for breast cancer diagnosis and treatment during single session in the MR scanner. Used as a supplement to an existing five degree-of-freedom (DOF) interventional probe positioning device, the apparatus is fitted with two additional DOF for the selection and exchange of interventional probes to be used in an automated probe positioning device. The entire system is constructed of MR compatible materials, i.e. non-magnetic and non-conductive, to eliminate artifacts and distortion of the MR images. The apparatus is remotely controlled by means of ultrasonic piezoelectric motors and a graphical user interface, providing MRI-guided planning and monitoring of the procedure while it is in progress. Based on a timing analysis, the device can quickly exchange a probe (48 seconds), thereby reducing the complexity and cost of the overall procedure.