Relevant bibliographies by topics / Projector principle

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Projector principle'

Author: Grafiati
Published: 4 June 2021
Last updated: 14 February 2022

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Journal articles on the topic "Projector principle"

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Zhao, Shuaihe, Mengyi Zhao, and Shuling Dai. "Automatic Registration of Multi-Projector Based on Coded Structured Light." Symmetry 11, no. 11 (November 12, 2019): 1397. http://dx.doi.org/10.3390/sym11111397.

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Multi-projector display systems are widely used in virtual reality, flight simulators, and other entertainment systems. Geometric distortion and color inconsistency are two key problems to be solved. In this paper a geometric correction principle is theoretically demonstrated and a consistency principle of geometric correction is first proposed. A new method of automatic registration of a multi-projector on a curved screen is put forward. Two pairs of binocular-cameras are used to reconstruct the curved screen. To capture feature points of the curved screen precisely, a group of red-blue coded structured light images is designed to be projected onto the screen. Geometric homography between each projector and the curved screen is calculated to gain a pre-warp template. Work which can gain a seamless display is illustrated by a six-projector system on the curved screen.
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He, Wan Tao, Xiang Lin Meng, and Can Zhao. "Phase Error Immunity Optical Measurement System." Advanced Materials Research 142 (October 2010): 194–98. http://dx.doi.org/10.4028/www.scientific.net/amr.142.194.

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In this paper, a 3D shape measurement system based on a digital fringe projection and phase-shifting technique was described. The fringe generated by a computer was projected onto the object by utilizing a digital video projector. Four steps phase shifting algorithm was used to calculate the 2π wrapping phase, and a heterodyne principle was used to unwrap the phase to obtain the real phase. Then the 3D coordinates object was calculated base on stereo vision algorithm by using the real phase as a constraint. Experiments demonstrated that the system was not sensitive to the phase error caused by the DVP’s nonlinearity.
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Hayakawa, Hiroki, and Tomohiro Yendo. "Projection type 3D display using spinning screen." Electronic Imaging 2020, no. 2 (January 26, 2020): 99–1. http://dx.doi.org/10.2352/issn.2470-1173.2020.2.sda-099.

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We propose 3D display that scans light rays from projector and enables stereoscopic display by arranging a number of long and thin mirror scanners with a gap and spinning each mirror scanner. This proposal aims at large-screen 3D display that allows multiple people to observe simultaneously with the naked eye. In previous study, multi-projection type 3D display was proposed as largescreen 3D display. However, many projectors make installation and adjustment complicated. Therefore, we have proposed 3D display that can display large screen with single projector in the past. However, there is a problem that the screen vibrates due to the screen swing mechanism, the scanning speed cannot be increased, and the displayed image appears to flicker. Our new proposed method can reduce the screen vibration by the spin mechanism, increase the scanning speed, and prevent the displayed image from flickering. Computer simulation was performed to confirm the principle of the proposed method, and it was confirmed that appropriate parallax could be presented. The necessary conditions and problems when manufacturing the actual machine were considered, and the prototype was designed.
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FU, Jiyun, Weile JIA, Zongyan CAO, Long WANG, Huang YE, and Xuebin CHI. "First-principle nonlocal projector potential calculation on GPU cluster." Journal of Computer Applications 33, no. 6 (October 29, 2013): 1540–43. http://dx.doi.org/10.3724/sp.j.1087.2013.01540.

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Zhang, Haihua, Qican Zhang, Yong Li, and Yihang Liu. "High Speed 3D Shape Measurement with Temporal Fourier Transform Profilometry." Applied Sciences 9, no. 19 (October 2, 2019): 4123. http://dx.doi.org/10.3390/app9194123.

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A novel high-speed 3D shape measurement technology called temporal Fourier transform profilometry (TFTP for short) is proposed by combining the merits of Fourier transform profilometry (FTP) and phase-measuring profilometry (PMP). Instead of using the digital light projector, a mechanical projector is employed to generate multi-period phase-shifting fringe patterns sequentially. During the reconstruction process, the phase value of each pixel is calculated independently along the temporal axis and no spectrum filtering operation is performed in a spatial domain. Therefore, high-frequency components containing the detailed information of the measured object effectively remain. The proposed method is suitable for measuring isolated dynamic objects. Only one frame of deformed fringe pattern is required to retrieve one 3D shape of the measured object, so it has the obvious advantage if measuring the dynamic scene at a high speed. A low-cost self-made mechanical projector with fast projection speed is developed to execute the principle-proof experiments, whose results demonstrate the feasibility of measuring isolated dynamic objects.
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Li, Zhong Wei, Chao Ma, Chun Li Liu, Cong Jun Wang, Kai Zhong, and Yu Sheng Shi. "PMP-Based Micro-3D Dental Measuring Technology." Applied Mechanics and Materials 192 (July 2012): 310–17. http://dx.doi.org/10.4028/www.scientific.net/amm.192.310.

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Based on the structured light measurement principle, digital fringes projection technology and phase-shifting measuring technology, specific to the 3D profile of some tiny objects like teeth, in this paper we proposes a 3D scanning system which was directly used for intraoral dental measurement utilizing the merits of flexible and long distance signal transmission of the fiber image bundle. The structured light is projected out from DLP LightCommander produced by Texas Instruments Company, shrunk via telecentric imaging lens, conveyed in fiber image bundle. Utilizing the transformational relation between single-camera and projector, afterwards, the 3D profile of teeth is obtained by reconstructing the acquisition images in electronic endoscope. The feasibility of this system has been testified in our experiments. It satisfies the requirements of miniaturization, directness and flexibility; expands the scope of application of micro-3D measurement with structured light in dental clinical practice.
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Liu, Yu Bao, Bin Liu, and Jun Yi Lin. "A Method of Line Structured Light Vision System Calibration Based on Stereo Vision." Applied Mechanics and Materials 397-400 (September 2013): 1453–58. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1453.

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It is a difficult task to get enough numbers of highly accurate control points for projector calibration in line structured light vision system. A new projector calibration method based on binocular stereo vision is proposed in this paper. Two cameras calibration can be done usingtraditional camera calibration method and they composed a binocular stereo vision. In projector calibration procedure, a planar template was located at several different positions in front of the stereo vision system. Two cameras captured the stripe images in each position simultaneously. Every center points of the laser stripe can be used as control points of the projector plane. The 3D coordinate of the stripe center points can be obtained through binocular stereo vision principle easily. So the light plane can be calculated quickly. Experiments were carried out and the result shows that the proposed method is flexible and stable.
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Liu, Fei, Qing Dong Yan, and Shou Wen Yao. "Research and Realization of Virtual Assembly Environment of Armored Vehicle Transmission Based on Dual-Channel Projection." Applied Mechanics and Materials 246-247 (December 2012): 408–12. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.408.

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The characteristics of assembly of vehicle transmission have been analyzed in this paper. General structure of PC-cluster virtual assembly environment of vehicle transmission based on dual-channel projection was described in detail. According to the characteristics of virtual assembly, analysis on technology of spectra stereoscopic display was performed. A geometric correction method of mechanic correction combined with software correction was proposed on the basis of arrangement form of curtain wall and the type of projector. Dual-channel synchronization mechanism in combination with the principle of PC-cluster was put forward. The application of a practical example in the virtual environment was realized for verifying the aforesaid methods and technologies.
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Shiou, Fang Jung, Hsin Ju Chen, and Chia Hao Hsu. "Development of a Print-Through Phenomenon Measurement System Using the Fringe Reflection Method for the Fiber Reinforced Plastics." Key Engineering Materials 437 (May 2010): 131–35. http://dx.doi.org/10.4028/www.scientific.net/kem.437.131.

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Precision noncontact measurement of the print-through phenomenon (PTP) of the fiber-reinforced plastics (FRP) is an urgent problem to be solved in yacht industry, especially for the quantization of the surface roughness and the profile of the yacht surface with PTP. The study presents the development of a surface profile measurement system using a fringe reflection method on a PC-based 3-axis measuring machine. The developed system mainly consists of a PC-based 3-axis machine, a CCD Camera, a programmable liquid crystal display (LCD) as a fringe projector, a screen on which the reflected fringe would be projected, a set of measurement software, and a PC. The surface roughness and the 2D profile of the flat composite specimens with PTP could be measured simultaneously using the fringe reflection method, based on the calibration results. Two-dimensional profile of a specimen with PTP was determined by the triangulation principle. The surface roughness of a test object was determined based on the scattering principle.
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Peng, Tao, and Satyandra K. Gupta. "Model and Algorithms for Point Cloud Construction Using Digital Projection Patterns." Journal of Computing and Information Science in Engineering 7, no. 4 (July 29, 2007): 372–81. http://dx.doi.org/10.1115/1.2798115.

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This paper describes a computational framework for constructing point clouds using digital projection patterns. The basic principle behind the approach is to project known patterns on the object using a digital projector. A digital camera is then used to take images of the object with the known projection patterns imposed on it. Due to the presence of 3D faces of the object, the projection patterns appear distorted in the images. The images are analyzed to construct the 3D point cloud that is capable of introducing the observed distortions in the images. The approach described in this paper presents three advances over the previously developed approaches. First, it is capable of working with the projection patterns that have variable fringe widths and curved fringes and hence can provide improved accuracy. Second, our algorithm minimizes the number of images needed for creating the 3D point cloud. Finally, we use a hybrid approach that uses a combination of reference plane images and estimated system parameters to construct the point cloud. This approach provides good run-time computational performance and simplifies the system calibration.
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Dissertations / Theses on the topic "Projector principle"

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Zelenenkaya, Ekaterina. "The Projector Principle as a Means of Portraying the Cultural through the Personal in Olive Senior's Summer Lightning and Other Stories." Thesis, Linköpings universitet, Avdelningen för språk och kultur, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-102466.

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The essay represents the projector principle, on which, as the essay’s author believes, the narration of The Summer Lightning and Other Stories by Olive Senior is based. The projector principle illustrates the idea that little details and images in the text serve big purposes, for example, reflect the emotional state of the characters or how the characters construct their identity. The literary analysis of the present essay aims at exploring a complicated identity construction in the context of Jamaica with its half-lost indigenous and half-remained colonial legacies through the identity construction of adolescent Jamaican protagonists of the short stories.
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Mercer, Leah Gwenyth. "Complementarity and the uncertainty principle as aesthetic principles : the practice and performance of The Physics Project." Queensland University of Technology, 2009. http://eprints.qut.edu.au/29938/.

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Using the generative processes developed over two stages of creative development and the performance of The Physics Project at the Loft at the Creative Industries Precinct at the Queensland University of Technology (QUT) from 5th – 8th April 2006 as a case study, this exegesis considers how the principles of contemporary physics can be reframed as aesthetic principles in the creation of contemporary performance. The Physics Project is an original performance work that melds live performance, video and web-casting and overlaps an exploration of personal identity with the physics of space, time, light and complementarity. It considers the acts of translation between the language of physics and the language of contemporary performance that occur via process and form. This exegesis also examines the devices in contemporary performance making and contemporary performance that extend the reach of the performance, including the integration of the live and the mediated and the use of metanarratives.
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Massam, Diane. "Case theory and the Projection Principle." Thesis, Massachusetts Institute of Technology, 1985. http://hdl.handle.net/1721.1/15172.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Linguistics and Philosophy, 1985.
MICROFICHE COPY AVAILABLE IN ARCHIVES AND HUMANITIES
Bibliography: leaves 390-407.
by Diane Massam.
Ph.D.
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Makhoalibe, Puleng. "Towards design principles for project artistry in exploratory sandpit projects: A design-based research perspective." Doctoral thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/26897.

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Organisations are increasingly finding themselves operating in environments that are characterised by higher levels of ambiguity, uncertainty and complexity, as well as environmental and internal changes that are beyond their control (Reeves, 2015). This context is affecting the way in which projects are executed, as project managers are expected to conceive, manage and successfully implement projects within such an environment. An important question to ask is: Are intrinsically unpredictable environments becoming more dominant leading to increase in the complexity of projects? We are now living in a volatile, uncertain, complex and ambiguous (VUCA) world; project management as a field has to overcome significant barriers to change and develop the capacity for more subjective, interactive, and interpretive innovations that appear to be more effective in these settings. The primary question addressed in this study is how the design of exploration projects may be carried out to bring clarity to project objectives and enablers. Design thinking, which is said to embody practices, mind-sets and processes that empower teams to co-create innovative solutions to wicked problems (Rittel and Webber, 1973) has been adopted in this study. Its design principles together with the creative problem-solving principles are combined to create a framework that facilitates design of exploration projects. This study uses design-based research (DBR) to apply the emerging framework to educational sandpit projects. These projects inherit the characteristics of exploration projects which are highly ambiguous toward more innovative, context-relevant, targeted solutions developed by diverse project teams. The study adopted a qualitative, interpretivist approach in order to enhance the design principles emerging from this study through authentic interventions in educational sandpits using DBR as a methodology. The outcome of the study, namely, a project artistry framework, emerged from the iterative process which was undertaken. The framework's value proposition is that it (the framework) had been proven to enable diverse teams to shift the participants' orientation from significant ambiguity and uncertainty to the ability to plan action by co-creating project visions with clear objectives and goals. The project artistry framework reflects the construction of a house and a more holistic framework, which consists of a roof (design process), the pillars required to hold up the roof (design pillars) and the foundational bricks. The design pillars include reflection, creative language, applied imagination, diverging and converging while the foundational bricks include empathy, empowerment, engagement, emergence, experimentation, environment, exploration and exploitation. In addition, an ambiguity acceptance journey is proposed to encourage a tolerance of ambiguity that leads to questioning and inquiry in projects that cultivates fresh insights and innovation in projects. New approaches to project leadership and design are essential to transform the world we live in. Although no panacea, project artistry provides project leaders with a new dimension to understanding the changing conditions that surround their project and envisioning better, innovative solutions to some of the most troublesome challenges facing our projects. It brings together the power of analysis and intuition to synthesize real solutions that not only work but meet the needs of the people. This fresh approach also brings enlightenment and transformation to those engaged in such projects and cultivates creative confidence and fosters collaboration.
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Carnie, Andrew, and David Medeiros. "Tree maximization and the generalized extended projection principle." University of Arizona Linguistics Circle, 2005. http://hdl.handle.net/10150/126609.

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In this paper we argue that a number of unexplained and stipulative properties of the grammar (such as the Generalized Extended Projection Principle, Binary Branching, Labeling) find a functional explanation, if we view them as correlates of a general desire for the grammar to maximize trees in such a way that they result in a Fibonacci-like sequence of maximal categories.
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Van, Heerden Johan P. "Reducing risks in large scale projects : investigating the integration of systems engineering principles into project management." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80151.

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Thesis (MScEng)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: Project management (PM) is a very important field in engineering as a whole. The management of most projects has become more complex in recent times, due to greater technical complexity and the requirement of diversified skills. The management of risks is a very important process to improve the performance of a project. This is due to the link between project risks and objectives. However, this aspect of PM becomes increasingly more difficult to manage with increasing project complexity. For these reasons a need exists for more efficient PM methods. This thesis had three objectives. The first was to understand the processes and principles of PM, systems engineering (SE) and risk management. This was achieved by doing a literature study on the three fields. The second objective was to identify areas of greater risk within the management of projects. The final objective was to develop an effective generic model that illustrates the integration of SE principles into PM, with the goal to reduce the identified risks. Five risks were identified during this research. They were considered to be the most important in project management. This was accomplished by means of a questionnaire that was sent out to experts in the industry. It was established from this investigation that the following five risks, in order of importance, pose the biggest threat to the success of a project: 1. Poorly defined requirements; 2. Poor communication; 3. Poor risk management; 4. Lack of customer involvement; and 5. Inaccurate estimates. These risks were addressed by integrating the principles of SE into PM. SE is an iterative process that needs a diverse set of people, with a variety of skills, to achieve customer requirements. Various SE approaches and strategies were developed throughout the years. They were investigated to obtain insight into which of them can be used to improve PM. The top-down iterative development principles of SE offer a great advantage, and therefore it was appropriate to integrate these principles into PM. A model was developed as part of this thesis to illustrate the integration of SE principles into PM, and the importance of risk management. The model was named “Project Management Integrated with Systems Engineering Principles Model”. This tool can be used by engineers and their project teams to enhance the management of projects. It is also a generic tool that can be used for any project. The final step of this research was the validation of the model. This was done by means of expert evaluation. The purpose of this validation was to test whether the objectives of the research were met, and if the model was valid in the sense of ease of use and usefulness. The final objective of the validation process was to determine if the integration of systems engineering (SE) principles into project management (PM) were successful, and if it will reduce risks in large scale projects. It was concluded from this evaluation that its objectives were met and that the model successfully demonstrated the integration of SE into PM to reduce risks in large scale projects. Several recommendations were made that may enhance this study. They main recommendations are: 1. Researching the impact of communication on projects, by using case studies. 2. SE principles are mainly used in the first two phases of the model. Further investigation of using SE principles in phase three may be researched. 3. Customer involvement may be used during changes in the project. For this reason it is recommended that future studies may include investigation of the impact the customer has on project changes and the change management process. 4. The model could be tested in the industry on an active project. This will greatly improve the validity of the model.
AFRIKAANSE OPSOMMING: Projekbestuur is ‘n baie belangrike veld in ingenieurswese as geheel. As gevolg van die toenemende tegniese kompleksiteit en die vereiste van verskillende vaardighede, het die bestuur van meeste projekte meer gekompliseerd geraak met tyd. Die bestuur van risiko’s is ‘n baie belangrike proses om die uitvoering van ‘n projek te verbeter. Hierdie aspek van projekbestuur het egter al hoe moeiliker geword om te bestuur. Dus hiervoor bestaan daar ‘n behoefte vir meer doeltreffende projekbestuur metodes. Hierdie tesis het drie doelwitte gehad. Die eerste doelwit was om die prosesse en beginsels van projekbestuur, stelsels ingenieurswese en risikobestuur te verstaan. Dit was bevredig deur ‘n literatuur studie wat gedoen is in die drie velde. Die tweede doelwit was gestel om die areas van groter risiko binne die bestuur van projekte te identifiseer. Die finale doelwit was die ontwilkkeling van ‘n effektiewe generiese model wat die integrasie van stelsels ingenieurswese beginsels binne projekbestuur demonstreer, met die doel om die geïdentifiseerde risiko’s te verminder. Vyf risiko’s, wat as die mees belangrikste in projekbestuur beskou word, was geïdentifiseer. Hierdie risiko’s was deur middel van ‘n vraelys, wat aan deskundiges in die industrie gestuur was, geïdentifiseer. Die risiko’s, gelys in volgorde van belangrikheid, was: 1. Swak bepaalde vereistes; 2. Swak kommunikasie; 3. Swak risiko bestuur; 4. Onnoukeurige skattings; en 5. Geen kliënt betrokkenheid. Vervolgens was hierdie risiko’s deur die integrasie van stelsels ingenieurswese beginsels in projekbestuur toegespreek. Stelsels ingenieurswese is ‘n herhalingsproses wat die kliënt se vereistes bevredig, deur gebruik te maak van ‘n diverse groep mense met ‘n verskeidenheid van vaardighede. Verskeie stelsels ingenieurswese benaderings en strategië is deur die jare ontwikkel. Hierdie benaderings en strategië was geondersoek om vas te stel watter van hulle toegepas kan word om projekbestuur te verbeter. Die “top-down” herhalende ontwikkeling beginsels van stelsels ingenieurswese bied ‘n groot voordeel, en dit was om hierdie rede toepaslik om dié beginsels in projekbestuur te integreer. ‘n Model was ontwikkel as deel van die navorsing om die integrasie van stelsels ingenieurswese beginsels binne projekbestuur te illustreer, asook die belangrikheid van risikobestuur. Die model is genoem “Project Management Integrated with Systems Engineering Principles Model”. Hierdie model kan deur ingenieurs en hul projekspanne gebruik word om die bestuur van projekte te versterk. Die finale stap van die navorsing was die evaluasie van die model. Dit was gedoen deur middel van deskundige evaluasie. Die validasie proses het twee doelwitte gehad. Die eerste doel was om te bepaal of die doelwitte van die ondersoek bereik was, asook om vas te stel of die model geldig was in die sin van gemak van gebruik en bruikbaarheid. Die tweede doel van die validasie proses was om te bepaal of die model suksesvol die integrasie van stelsels ingenieurswese binne projekbestuur gedemonstreer het, en of hierdie integrasie risiko’s in groot skaalse projekte sal verminder. Dit was afgelei van die evaluasie dat die model wel suksesvol die integrasie van stelsels ingenieurswese binne projekbestuur demonstreer om risiko’s in grootskaalse projekte te verminder. Verskeie aanbevelings was gemaak wat hierdie navorsing kan versterk in waarde. Die hoof aanbevelings was: 1. Die impak wat kommunikasie op projekte het kan geondersoek word deur middel van gevallestudies. 2. Stelsels ingenieurswese beginsels is hoofsaaklik gedurende die eerste twee fases van die model gebruik. Die gebruik van stelsels ingenieurswese beginsels in fase drie kan verder ondersoek word. 3. Kliënt betrokkenheid gedurende veranderinge in ‘n projek kan gebruik word. Om hierdie rede word dit aanbeveel dat verdere studies die kliënt se impak op projek veranderings en verandering in bestuursproses ondersoek word. 4. Die model kan getoets word in die industrie op ‘n aktiewe projek. Dit sal die geldigheid van die model grootliks verbeter.
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Toner, Anna L., Tom R. Franks, I. Goldman, David Howlett, Faustin Kamuzora, F. Muhumuza, and T. Tamasane. "Goodbye to Projects? Briefing Paper 1: An Overview: Projects and Principles." Thesis, Bradford Centre for International Development, 2004. http://hdl.handle.net/10454/2895.

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Yes
This briefing paper reports on research exploring ten detailed case studies of livelihoods-oriented interventions operating in Tanzania, Lesotho, South Africa and Uganda. Analysing these interventions through an audit of sustainable livelihood `principles¿ (as a proxy for best practice) revealed general lessons both about the practical opportunities and challenges for employing sustainable livelihoods approaches to the design, implementation, monitoring and evaluation of development interventions and also about the changing format of development interventions.
Department for International Development
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Vinger, Gift. "THE STATUS OF THE PROJECTION PRINCIPLE IN GOVERNMENT-BINDING THEORY." Journal for New Generation Sciences, Vol 6, Issue 2: Central University of Technology, Free State, Bloemfontein, 2008. http://hdl.handle.net/11462/509.

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The role of the Projection Principle within Chomsky's Government-Binding (GB) Theory is to preserve the subcategorisation properties of lexical items at all levels of syntactic representation, viz. D-structure, S-structure, and Lexical Form. Arguments have been made that the Projection Principle is a new concept that is simply an extension of theTransformational Component (XFM) and Emonds' Structure-Preserving Constraint (SPC), and that it does not deserve the high status it has been accorded in GB theory. This paper provides evidence, based on sentences involving movement operations, that the Projection Principle is innovative and that it convincingly addresses what theXFMandSPChave failed to address.
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Braizinha, Joaquim José. "Projecto clássico em arquitectura." Phd thesis, Instituições portuguesas -- UTL-Universidade Técnica de Lisboa -- -Faculdade de Arquitectura, 1989. http://dited.bn.pt:80/29762.

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Zeytuncu, Yunus Ergin. "Lp and Sobolev Regularity of Weighted Bergman Projections." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1273761421.

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Books on the topic "Projector principle"

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The principle of the fermionic projector. Providence, RI: American Mathematical Society, 2005.

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Dianne, Rowe, ed. The projection principle. New York: St. Martin's Press, 1988.

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Project partnering: Principle and practice. London: Thomas Telford, 1995.

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Spinner, M. Project management: Principles and practices. London: Prentice-Hall International, 1997.

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Spinner, M. Project management: Principles and practices. Upper Saddle River, N.J: Prentice Hall, 1997.

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Sotiriou, Constantine Evangelos. Success principles for project management. Portland, Or: Thompson Osborn Pub., 1997.

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Dianne, Rowe, ed. Le principe de la projection. Montréal, Qué: Actualisation, 1990.

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1942-, Lukas Joan, ed. Logo: Principles, programming, and projects. Monterey, Calif: Brooks/Cole Pub. Co., 1986.

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Lukas, George. Logo: Principles, programming, and projects. Monterey, Calif: Brooks/Cole Pub. Co., 1986.

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Kaufman, Allan. Exploring solar energy: Principles & projects. Ann Arbor, MI: Prakken Publications, 1989.

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Book chapters on the topic "Projector principle"

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(Bud) Griffis, F. H., Frederick B. Plummer, and Francis X. DarConte. "Principles of Leadership." In Leadership, Ethics, and Project Execution, 26–48. New York: Routledge, 2021. http://dx.doi.org/10.4324/9781003129943-4.

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Cottrell, Stella. "Principles of good research." In Dissertations and Project Reports, 89–96. London: Macmillan Education UK, 2014. http://dx.doi.org/10.1007/978-1-137-36427-2_11.

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Ding, Ronggui. "Fundamental Principles of Project Management." In Key Project Management Based on Effective Project Thinking, 37–55. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-47731-1_3.

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Marle, Franck, and Ludovic-Alexandre Vidal. "Project Management Traditional Principles." In Managing Complex, High Risk Projects, 1–52. London: Springer London, 2015. http://dx.doi.org/10.1007/978-1-4471-6787-7_1.

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Alleman, Glen B., Tom Coonce, and Rick Price. "Risk management principles." In The Practitioner’s Handbook of Project Performance, 125–43. Names: Phillips, Mark, 1960- editor.Title: The practitioner’s handbook of project performance: agile, waterfall and beyond/edited by Mark Phillips.Description: 1. Edition. | New York: Routledge, 2019.: Routledge, 2019. http://dx.doi.org/10.4324/9781315268040-10.

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Cohan, Steven. "Project management." In Business Principles for Landscape Contracting, 96–107. Third edition. | Milton Park, Abingdon, Oxon ; New York, NY : Routledge, [2018] | Revision of: Business principles of landscape contracting. 2013. 2nd edition.: Routledge, 2018. http://dx.doi.org/10.4324/9781315225500-6.

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Davies, Martin, and Nathan Hughes. "The Principles of Sampling." In Doing a Successful Research Project, 55–70. London: Macmillan Education UK, 2014. http://dx.doi.org/10.1007/978-1-137-30650-0_4.

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Griffith, Alan, and Tony Sidwell. "Constructability Concepts and Principles." In Constructability in Building and Engineering Projects, 1–30. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-13137-2_1.

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Gratchev, Ivan, Dong-Sheng Jeng, and Erwin Oh. "Principles of soil deformation." In Soil Mechanics Through Project-Based Learning, 105–14. London ; Boca Raton : CRC Press/Balkema is an imprint of the Taylor & Francis Group, an Informa Business, [2019]: CRC Press, 2018. http://dx.doi.org/10.1201/9780429507786-9.

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Trendowicz, Adam, and Ross Jeffery. "Principles of Effort and Cost Estimation." In Software Project Effort Estimation, 11–45. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-03629-8_2.

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Conference papers on the topic "Projector principle"

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Zhou, Chi, and Yong Chen. "Additive Manufacturing Based on Multiple Calibrated Projectors and Its Mask Image Planning." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28922.

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Additive manufacturing (AM) processes based on mask image projection such as digital micro-mirror devices (DMD) have the potential to be fast and inexpensive. More and more research and commercial systems have been developed based on such digital devices. However, a digital micro-mirror device such as a digital light processing (DLP) projector has limited accuracy and resolution. Based on the principle of pixel blending, we present a novel AM process by using multiple DMDs to significantly improve the accuracy and resolution of built components. In order to achieve the desired pixel blending result for a given layer, it is critical to plan the mask images that will be used by the multiple projectors. In addition, the mask image planning needs to compensate the calibrated light intensity in a projection image that is usually non-uniform and non-linear. We present a general optimized pixel blending method based on direct discrete search (DDS). Its mathematic model and computing method for the mask image planning are presented. Various test cases have been performed to verify its effectiveness and efficiency.
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Peng, Tao, and Satyandra K. Gupta. "A Computational Framework for Point Cloud Construction Using Digital Projection Patterns." In ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99553.

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Many reverse engineering and inspection applications require generation of point clouds representing faces of physical objects. This paper describes a computational framework for constructing point clouds using digital projection patterns. The basic principle behind the approach is to project known patterns on the object using a digital projector. A digital camera is then used to take images of the object with the known projection patterns imposed on it. Due to the presence of 3-D faces of the object, the projection patterns appear distorted in the images. The images are analyzed to construct the 3-D point cloud that is capable of introducing the observed distortions in the images. The approach described in this paper presents three advances over the previously developed approaches. First, it is capable of working with the projection patterns that have variable fringe widths and curved fringes and hence can provide improved accuracy. Second, our algorithm minimizes the number of images needed for creating the 3-D point cloud. Finally, we use a hybrid approach that uses a combination of reference plane images and estimated system parameters to construct the point cloud. This approach provides good run-time computational performance and simplifies the system calibration.
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Chen, Po-Chih, Chia-Ou Chang, Wen-Tien Chang Chien, and Chan-Shin Chou. "Molecular/Mechanical Dynamics Simulations With Nonholonomic Constraints." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38469.

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In this paper a new method of incorporating linear/nonlinear nonholonomic constraints into the mechanical/molecular dynamical systems is presented. We first introduce the mass-weighted coordinates such that acceleration and forces are scaled to have the same units, and can be operated in the same space. Then we use the projector formalism and Gauss’s principle of least constraint to derive the constraint force in the explicit form so that the equations of motion are free of Lagrange multipliers. The use of mass-weighted coordinates enable the equation of the constraint forces to be expressed in terms of first generalized inverse of constraint matrix rather than the two-time generalized inverse of matrices used in the recent works. An algorithm of numerical integration for ensuring the satisfaction of constraint equations and avoiding the numerical drift is proposed. Two simple examples, constant kinetic energy (or temperature) and time-varying prescribed kinetic energy of three-particle dynamical system effectively verify our method.
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Kauranena, Sandra, Dina Bite, and Zenija Kruzmetra. "Sustainable project management: case of culture projects in Zemgale planning region." In 21st International Scientific Conference "Economic Science for Rural Development 2020". Latvia University of Life Sciences and Technologies. Faculty of Economics and Social Development, 2020. http://dx.doi.org/10.22616/esrd.2020.54.019.

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Adherence to the principles of sustainability in the acquisition of different funds and financial instruments is one of the basic conditions for obtaining funding. In the field of cultural project management, sustainability is more difficult to assess because the concept of culture is multifaceted and not always quantifiable. Identifying and promoting the sustainability of the results of cultural projects outside large cities and in rural areas is particularly important, as each project implemented should serve the growth and cultural development of the area. Unfortunately, the lack of research on this issue proves the need to invest a great deal in identifying and analysing the situation. There is a lack of studies analysing the contribution of cultural projects to the development of regional territories and their long-term benefits. To do this, the research set a goal: to study the practice of ensuring sustainability of results of cultural projects in Zemgale planning region, Latvia. The research used quantitative and qualitative research methods - content analysis of Zemgale Planning Region municipal websites, document research and analysis of Zemgale Planning Region (state institution), as well as semi-structured interviews. The study reveals certain practices that municipal authorities are pursuing to ensure the sustainability of cultural projects, such as linking different activities, using the 'project basket' principle etc., but overall it has to be concluded that sustainable cultural project management still needs to be expanded and improved. There is often a lack of links and feedback between project applicants and final beneficiaries. There are no clear indicators to measure sustainability. New approaches need to be found not only to learn how to integrate sustainability principles into project management, but also to introduce a set of convenient and practical steps to make the desirable sustainability scenario described in theory a common practice in cultural project management.
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Elnaz, Safapour, Kermanshachi Sharareh, and Jafari Amirhosein. "Effective Project Management Principles and Strategies in Transportation Infrastructure Projects." In Creative Construction e-Conference 2020. Online: Budapest University of Technology and Economics, 2020. http://dx.doi.org/10.3311/ccc2020-064.

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Holladay, Seth. "Projects lead to principles." In SA '16: SIGGRAPH Asia 2016. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2993363.2993368.

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Zheng, Yi, and Beiwen Li. "Uniaxial High-Speed Micro-Scale 3D Surface Topographical Measurements Using Fringe Projection." In ASME 2020 15th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/msec2020-8303.

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Abstract In-situ inspection has drawn many attentions in manufacturing due to the importance of quality assurance. With the rapid growth of additive manufacturing technology, the importance of in-line/in-situ inspections has been raised to a higher level due to many uncertainties that could occur during an additive printing process. Given this, having accurate and robust in-situ monitoring can assist corrective actions for a closed-loop control of a manufacturing process. Contact 3D profilometers such as stylus profilometers or coordinate measuring machines can achieve very high accuracies. However, due to the requirement for physical contact, such methods have limited measurement speeds and may cause damage to the tested surface. Thus, contact methods are not quite suitable for real-time in-situ metrology. Non-contact methods include both passive and active methods. Passive methods (e.g., focus variation or stereo vision) hinges on image-based depth analysis, yet the accuracies of passive methods may be impacted by light conditions of the environment and the texture quality of the surface. Active 3D scanning methods such as laser scanning or structured light are suitable for instant quality inspection due to their ability to conduct a quick non-contact 3D scan of the entire surface of a workpiece. Specifically, the fringe projection technique, as a variation of the structured light technique, has demonstrated significant potential for real-time in-situ monitoring and inspection given its merits of conducting simultaneous high-speed (from 30 Hz real-time to kilohertz high speeds) and high accuracy (tens of μm) measurements. However, high-speed 3D scanning methods like fringe projection technique are typically based on triangulation principle, meaning that the depth information is retrieved by analyzing the triangulation relationship between the light emitter (i.e., projector), the image receiver (i.e., camera) and the tested sample surface. Such measurement scheme cannot reconstruct 3D surfaces where large geometrical variations are present, such as a deep-hole or a stair geometry. This is because large geometrical variations will block the auxiliary light used in the triangulation based methods, which will resultantly cause a shadowed area to occur. In this paper, we propose a uniaxial fringe projection technique to address such limitation. We measured a stair model using both conventional triangulation based fringe projection technique and the proposed method for comparison. Our experiment demonstrates that the proposed uniaxial fringe projection technique can perform high-speed 3D scanning without shadows appearing in the scene. Quantitative testing shows that an accuracy of 35 μm can be obtained by measuring a step-height object using the proposed uniaxial fringe projection system.
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Chung, Sheng-Luen, and Yong-Ling Tseng. "Projection reversibility principle and its application to projection corrections." In 2018 International Workshop on Advanced Image Technology (IWAIT). IEEE, 2018. http://dx.doi.org/10.1109/iwait.2018.8369774.

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Swann, Jennifer M., and Noel D. Perreira. "“Animal-Like, Sensor-Based Robot Motions: Learning From Nature”—An Interdisciplinary Project for Rising Sophomores at Lehigh University." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43967.

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For the last three summers Lehigh University has sponsored a Research Experience for Undergraduates with support from the National Science Foundation, Department of Defense and Pennsylvania Infrastructure and Technology Alliance. Each year 10–12 rising sophomores were recruited from throughout the US to work with 4–5 graduate students and 2 professors from biological sciences and mechanical engineering. The project’s goal is to create a chemical sensing, mobile robot using a carbon based electronic nose developed by the California Institute of Technology for NASA and principles obtained from observations of the common housefly. To date the project has: developed protocols to train houseflies to approach or avoid a novel chemical stimulus; determined the electronic signature for a pure chemical using principal component analysis; and designed and built chambers for testing the enose and flies. Lab work and lectures are complimented by seminars from professionals in biology, engineering and robotics to expose the students to scientists from research and industry. Assessed by informal interview before and after the project indicated that the students learned basic principles in biology and engineering, and were more likely to enter these fields as a result of their participation in the project.
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Radzi, Nor Haizan Mohamed, Muhammad Sirajuddin Mazlan, Noorfa Haszlinna Mustaffa, and Roselina Sallehuddin. "Police personality classification using principle component analysis-artificial neural network." In 2017 6th ICT International Student Project Conference (ICT-ISPC). IEEE, 2017. http://dx.doi.org/10.1109/ict-ispc.2017.8075348.

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Reports on the topic "Projector principle"

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Watkiss, Paul, Robert Wilby, and Charles Andrew Rodgers. Principles of Climate Risk Management for Climate Proofing Projects. Asian Development Bank, July 2020. http://dx.doi.org/10.22617/wps200203-2.

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Chauhan, Dharmistha, and Swapna Bist Joshi. Care Principles: Guidelines for promoting care-responsive institutional strategies. Oxfam, September 2021. http://dx.doi.org/10.21201/2021.8038.

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Care work, both unpaid and underpaid, is mostly carried out by women, and still remains largely invisible in policies and projects across many organizations. The principles outlined in this guide aim to influence institutional policies towards recognizing, planning, adopting and monitoring strategies that reduce and redistribute care work.
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Hulen, J. B. Participation in the Creede Scientific Drilling Project as on-site Principal Investigator. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/6812583.

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Richard M. Crooks. From First Principles Design to Realization of Bimetallic Catalysts for Ultrahigh Selectivity - Final Project Report. Office of Scientific and Technical Information (OSTI), April 2007. http://dx.doi.org/10.2172/901980.

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Hulen, J. B. Participation in the Creede Scientific Drilling Project as on-site Principal Investigator. Final report. Office of Scientific and Technical Information (OSTI), June 1992. http://dx.doi.org/10.2172/10127451.

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Gershberg, Alec. Political Economy Research to Improve Systems of Education: Guiding Principles for the RISE Program’s PET-A Research Projects. Research on Improving Systems of Education (RISE), July 2021. http://dx.doi.org/10.35489/bsg-rise-ri_2021/030.

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Thompson, Eric, and Patricio Asfura-Heim. Assessments of the Impact of 1206-Funded Projects in Selected Countries: Lebanon, Pakistan, Yemen, Sao Tome, and Principe. Fort Belvoir, VA: Defense Technical Information Center, July 2008. http://dx.doi.org/10.21236/ada484774.

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Guo, Fan. IC Project: Magnetic Reconnection versus Shocks: First-principles Kinetic Simulations of Major Particle Acceleration Mechanisms in the Universe. Office of Scientific and Technical Information (OSTI), February 2019. http://dx.doi.org/10.2172/1498007.

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Bridges, Todd, E. Bourne, Burton Suedel, Emily Moynihan, and Jeff King. Engineering With Nature : An Atlas, Volume 2. Engineer Research and Development Center (U.S.), March 2021. http://dx.doi.org/10.21079/11681/40124.

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Engineering With Nature: An Atlas, Volume 2 showcases EWN principles and practices "in action" through 62 projects from around the world. These exemplary projects demonstrate what it means to partner with nature to deliver engineering solutions with triple-win benefits. The collection of projects included were developed and constructed by a large number of government, private sector, non-governmental organizations, and other organizations. Through the use of photographs and narrative descriptions, the EWN Atlas was developed to inspire interested readers and practitioners with the potential to engineer with nature.
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Berkowitz, Jacob, Nathan Beane, Kevin Philley, Nia Hurst, and Jacob Jung. An assessment of long-term, multipurpose ecosystem functions and engineering benefits derived from historical dredged sediment beneficial use projects. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41382.

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The beneficial use of dredged materials improves environmental outcomes while maximizing navigation benefits and minimizing costs, in accordance with the principles of the Engineering With Nature® (EWN) initiative. Yet, few studies document the long-term benefits of innovative dredged material management strategies or conduct comprehensive life-cycle analysis because of a combination of (1) short monitoring time frames and (2) the paucity of constructed projects that have reached ecological maturity. In response, we conducted an ecological functional and engineering benefit assessment of six historic (>40 years old) dredged material–supported habitat improvement projects where initial postconstruction beneficial use monitoring data was available. Conditions at natural reference locations were also documented to facilitate a comparison between natural and engineered landscape features. Results indicate the projects examined provide valuable habitat for a variety of species in addition to yielding a number of engineering (for example, shoreline protection) and other (for example, carbon storage) benefits. Our findings also suggest establishment of ecological success criteria should not overemphasize replicating reference conditions but remain focused on achieving specific ecological functions (that is, habitat and biogeochemical cycling) and engineering benefits (that is, storm surge reduction, navigation channel maintenance) achievable through project design and operational management.
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