Relevant bibliographies by topics / Top-down input-output

Academic literature on the topic 'Top-down input-output'

Author: Grafiati
Published: 4 June 2021
Last updated: 19 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Top-down input-output.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Top-down input-output"

1

Martens, Wim, Frank Neven, and Marc Gyssens. "Typechecking top-down XML transformations: Fixed input or output schemas." Information and Computation 206, no. 7 (July 2008): 806–27. http://dx.doi.org/10.1016/j.ic.2008.01.002.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Munksgaard, Jesper, Manfred Lenzen, Thomas C. Jensen, and Lise-Lotte Pade. "Transport Energy Embodied in Consumer Goods: A Hybrid Life-Cycle Analysis." Energy & Environment 16, no. 2 (March 2005): 283–301. http://dx.doi.org/10.1260/0958305053749480.

Full text
Abstract:
This paper describes an analysis of the transport-related energy embodied in goods consumed by households. Our approach combines bottom-up with top-down modelling in a hybrid life-cycle analysis. The bottom-up part is a process analysis of international transport, examining foreign trade statistics, transportation modes, transport distances, and energy efficiencies. The top-down part is an input-output analysis identifying transport energy use in upstream production layers. To demonstrate the application of the model we carry out a three-step empirical analysis of goods consumed in Denmark in 1995, starting with highly aggregated commodity groups, and ending with “bread”.
APA, Harvard, Vancouver, ISO, and other styles
3

Ling, Meng, Xue Luo, Sheng Hu, Fan Gu, and Robert L. Lytton. "Numerical Modeling and Artificial Neural Network for Predicting J-Integral of Top-Down Cracking in Asphalt Pavement." Transportation Research Record: Journal of the Transportation Research Board 2631, no. 1 (January 2017): 83–95. http://dx.doi.org/10.3141/2631-10.

Full text
Abstract:
Top-down cracking (TDC) is recognized as one of the major distress modes in asphalt pavements. This study aimed to determine the fracture parameter J-integral of TDC, which is a critical input to predict the crack growth rate and fatigue life of pavements for this type of distress. Previous research studies demonstrated that TDC is affected by various factors, including the complex state of high tensile or shear stresses induced by the loading at the edge of or within the tire and material properties such as the modulus gradient in the asphalt layer, moduli of the base and subgrade layers, and pavement structures. In this study, the finite element model (FEM) was adopted to simulate the propagation of TDC by considering combinations of these essential factors and to calculate the J-integral for 194,400 cases. It was shown that the modulus gradient plays an important role in determining the J-integral, and the J-integral is not uniformly distributed within the pavement depth. On the basis of the database generated from the FEM, six backpropagation artificial neural network (ANN) models—including one input layer, two hidden layers, and one output layer—were developed by using the same input variables and output variable as those for the FEM. The R2 value for each ANN model was greater than .99, which indicates the goodness of fit. After the parameters of each ANN model have been determined, the J-integral can be predicted for any combination of the design parameters without reconstruction of the FEM.
APA, Harvard, Vancouver, ISO, and other styles
4

Maneth, Sebastian. "A Survey on Decidable Equivalence Problems for Tree Transducers." International Journal of Foundations of Computer Science 26, no. 08 (December 2015): 1069–100. http://dx.doi.org/10.1142/s0129054115400134.

Full text
Abstract:
The decidability of equivalence for three important classes of tree transducers is discussed. Each class can be obtained as a natural restriction of deterministic macro tree transducers (MTTs): (1) no context parameters, i.e., top-down tree transducers, (2) linear size increase, i.e., MSO definable tree transducers, and (3) monadic input and output ranked alphabets. For the full class of mtts, decidability of equivalence remains a long-standing open problem.
APA, Harvard, Vancouver, ISO, and other styles
5

Sun, Zhongxiao, Arnold Tukker, and Paul Behrens. "Going Global to Local: Connecting Top-Down Accounting and Local Impacts, A Methodological Review of Spatially Explicit Input–Output Approaches." Environmental Science & Technology 53, no. 3 (December 11, 2018): 1048–62. http://dx.doi.org/10.1021/acs.est.8b03148.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Liao, Yi-Hung. "A Step Up/Down Power-Factor-Correction Converter with Modified Dual Loop Control." Energies 13, no. 1 (January 1, 2020): 199. http://dx.doi.org/10.3390/en13010199.

Full text
Abstract:
A step up/down AC/DC converter with modified dual loop control is proposed. The step up/down AC/DC converter features the bridgeless characteristic which can reduce bridge-diode conduction losses. Based on the step up/down AC/DC converter, a modified dual loop control scheme is proposed to achieve input current shaping and output voltage regulation. Fewer components are needed compared with the traditional bridge and bridgeless step up/down AC/DC converters. In addition, the intermediate capacitor voltage stress can be reduced. Furthermore, the top and bottom switches still have zero-voltage turn-on function during the negative and positive half-line cycle, respectively. Hence, the thermal stresses can also be reduced and balanced. Simulation and experimental results are provided to verify the validity of the proposed step up/down AC/DC converter and its control scheme.
APA, Harvard, Vancouver, ISO, and other styles
7

Rocco, Matteo, Yassin Rady, and Emanuela Colombo. "Soft-linking bottom-up energy models with top-down input-output models to assess the environmental impact of future energy scenarios." Modelling, Measurement and Control C 79, no. 3 (September 30, 2018): 103–10. http://dx.doi.org/10.18280/mmc_c.790307.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Hou, Siyu, Yu Liu, Xu Zhao, Martin Tillotson, Wei Guo, and Yiping Li. "Blue and Green Water Footprint Assessment for China—A Multi-Region Input–Output Approach." Sustainability 10, no. 8 (August 9, 2018): 2822. http://dx.doi.org/10.3390/su10082822.

Full text
Abstract:
Research on blue and green water footprints (WF) for China has typically been carried out based on bottom-up and top-down approach using a single-region input–output table. However, this research typically lacks detail on the sectoral interrelationships which exist between China and its trading partners in other countries/regions of the world. Here, a multi-region input–output approach using the WIOD database was applied to quantify the blue and green WF for China in 2009. The quantification was conducted from both production (WFP) and consumption (WFC) perspectives. The results show that the total WFP for China in 2009 was 1152.2 km3, second only to India. At 1070.9 km3, China had the largest WFC volume in the world. The internal WF was 953.5 km3, taking the substantial share for both the WFC and WFP. Overall, China’s trade resulted in a net export of 53.5 km3 virtual water. In contrast, the agricultural sector resulted in a net import of 70.6 km3 virtual water to China, with United States, Brazil, and Canada acting as major suppliers. This study suggests that quantifying the WF of China at global level through a MRIO framework is a necessary step towards achieving sustainability for China’s water management.
APA, Harvard, Vancouver, ISO, and other styles
9

Asuad Sanen, Normand Eduardo, and José Manuel Sánchez. "An exploratory and comparative analysis between bottom-up and top-down approaches for a spatialized construction of a regional Input-Output matrix." Revista Mexicana de Economía y Finanzas 13, no. 2 (April 1, 2018): 137–74. http://dx.doi.org/10.21919/remef.v13i2.273.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Zhang, Jin, Xiaoming Qian, and Jing Feng. "Review of carbon footprint assessment in textile industry." Ecofeminism and Climate Change 1, no. 1 (June 3, 2020): 51–56. http://dx.doi.org/10.1108/efcc-03-2020-0006.

Full text
Abstract:
Purpose Under the global climate change, carbon footprint has become a hot issue at home and abroad. However, there is no consensus on the concept, measurement and application of carbon footprint. Design/methodology/approach In this paper, first, the concept and connotation of carbon footprint are reviewed; then, different methods of carbon footprint measurement are compared, and it is found that “bottom-up” life cycle assessment and “top-down” input–output analysis are applicable to different research scales. Findings Finally, the problems in the process of carbon footprint assessment in textile industry are analyzed and further research directions are proposed. Originality/value Analyzed and further research directions are proposed.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Top-down input-output"

1

Gangemi, Michael Andrew, and michael gangemi@rmit edu au. "Modeling The Economic Impact of A Farming Innovation Group On A Regional Economy - A Top-Down Versus Hybrid Input-Output Approach." RMIT University. Economics, Finance And Marketing, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080828.163749.

Full text
Abstract:
This thesis involves construction of input-output models measuring the economic impact of a farming innovation organisation (The Birchip Cropping Group) on the Victorian regional economy of Buloke Shire. The input-output modeling undertaken is of two forms; the first being a simple naïve top-down model, and the second a more sophisticated hybrid model. The naïve top-down model is based on input-output coefficients drawn from the Australian national input-output tables, and is regarded as naïve because these input-output coefficients are not adjusted to take account of local economic factors. The hybrid model uses the same national input-output coefficients as a base, and then modifies these coefficients to better reflect industrial conditions in the Shire using a location quotients-adjustment technique, as well as using original survey data collected from entities operating in Buloke Shire. One of the aims of the thesis is to determine whether the simpler naïve top-down approach produces results consistent with the theoretically more accurate hybrid methodology, and thus whether the naïve top-down approach represents a reliable method of conducting regional economic impact analysis. That is, can such studies be undertaken accurately using a naïve top down approach, or is it necessary to adopt the more resource intensive methodology of a hybrid model. The results of the analysis suggest construction of a hybrid model is advisable, as generally the naïve top-down approach produces over-estimates of the economic effects of the Birchip Cropping Group. That is, it appears the economic impact multipliers estimated with the naïve top-down model are too large, suggesting the time and effort involved in constructing the hybrid model was worthwhile. Using the hybrid model, the conclusion is that the Birchip Cropping Group has a significant affect on the regional economy of Buloke Shire, with the economic impact being estimated at close to $600,000 in additional output, $61,000 in additional income, and 3.5 additional jobs per year.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Top-down input-output"

1

Derrible, Sybil, Lynette Cheah, Mohit Arora, and Lih Wei Yeow. "Urban Metabolism." In Urban Informatics, 85–114. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8983-6_7.

Full text
Abstract:
AbstractUrban metabolism (UM) is fundamentally an accounting framework whose goal is to quantify the inflows, outflows, and accumulation of resources (such as materials and energy) in a city. The main goal of this chapter is to offer an introduction to UM. First, a brief history of UM is provided. Three different methods to perform an UM are then introduced: the first method takes a bottom-up approach by collecting/estimating individual flows; the second method takes a top-down approach by using nation-wide input–output data; and the third method takes a hybrid approach. Subsequently, to illustrate the process of applying UM, a practical case study is offered using the city-state of Singapore as an exemplar. Finally, current and future opportunities and challenges of UM are discussed. Overall, by the early twenty-first century, the development and application of UM have been relatively slow, but this might change as more and better data sources become available and as the world strives to become more sustainable and resilient.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Top-down input-output"

1

Kase, Yuto, Yoshihiro Kanamori, and Jun Mitani. "A Method for Designing Flat-Foldable 3D Polygonal Models." In 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/detc2015-46566.

Full text
Abstract:
We propose a method for designing targeted 3D polygonal models that can be folded flat, which consist of side panels as well as horizontal top and bottom panels. Vertically adjacent panels are connected by hinges at their horizontal edges. The models can be folded flat by pushing down the top panel, while they can be also deployed by pulling up the top panel. The key idea in making the model so that it can be folded flat is to add vertical slits along the edges of side panels; the horizontally adjacent side panels are separated in the folded state, and are connected to form a closed solid model in the deployed state. Our method takes the shapes of the top panel as well as the cross sections of the side panels as inputs. Users of our prototype system first simply draw the top panel as a convex polygon. They then draw polylines to specify the cross sections. Since the polyhedral model generated by the input data rarely satisfies flat-foldability conditions, our system modifies the positions of the vertices in cross sections based on numerical optimization. Unlike most origami design systems that ignore material thickness, our system can output the 3D geometry of panels so that they can be used to form a closed 3D model with a certain thickness.
APA, Harvard, Vancouver, ISO, and other styles
2

Mynderse, James A., and George T. C. Chiu. "Improved Control of a Steering Wheel Vibration Simulator." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14029.

Full text
Abstract:
The improved control of a steering wheel vibration simulator capable of reproducing a set of desired vibration/acceleration signals is presented. The simulator is to be used in characterizing human perception of vibration as transmitted to the hand through the steering wheel. Accelerometers are used to record the acceleration at the top of the steering wheel in both the up-down (z) and side-to-side (y) directions. The plant is modeled by frequency response measurements including an uncertainty model generated from measured changes in system frequency response due to variations in subject grip force. The simulator control problem is formulated as a 2-input, 1-output tracking control of the z-axis while minimizing the y-axis response. A two degree-of-freedom controller is synthesized with a stabilizing feedback controller and a zero phase error tracking feedforward controller. The feedback controller is designed using linear matrix inequality techniques and ensures robust stability of the coupled closed-loop system with uncertainty due to subject grip force. Simulation and experimental results to verify the effectiveness of the simulator are presented.
APA, Harvard, Vancouver, ISO, and other styles
3

IKPEZE, Victoria Kamnetochi, John Olusoji OWOLABI, Idowu Iyabo OLATEJU, and Abdulwahab GIWA. "Modelling and Simulation of Acid Gas Absorption from Natural Gas by Amine Solution Using Aspen HYSYS." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/207183-ms.

Full text
Abstract:
Abstract This work has been carried out to model and simulate a typical acid gas absorption process using Aspen HYSYS process simulator. The chemical components involved in the process development were water, methane, ethane, propane, higher alkanes, carbon dioxide, hydrogen sulphide, nitrogen and amines: monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) and methyldiethanolamine (MDEA). The fluid package selected for the simulation before entering the simulation environment was Acid Gas – Chemical Solvents. In the simulation environment, the model was developed by picking an absorber from the Model Palette, placing it and assigning the input and the output streams involved before inputting the parameters required for model convergence. The carbon dioxide-rich feed gas was made to enter the absorber at the bottom inlet stream while the lean amine stream entered at the top inlet and showered down on the uprising gas thereby trapping the carbon dioxide molecules within the gas. The top product from the absorber was the treated gas while the amine solution and the trapped carbon dioxide left the absorber as the bottom product. Different simulations were run to investigate the performance of the amines under the same operating conditions. It was discovered that, of all the four amine solvents considered in this work for the removal of carbon dioxide by chemical absorption, MEA had the highest efficiency but would require more dehydration because it had the highest water content. DEA was also found to scrub the carbon dioxide down to acceptable levels. However, TEA and MDEA barely scrubbed any carbon dioxide under these conditions, as their carbon dioxide compositions were found to be unacceptable. The analyses of the results obtained from the simulations indicated that Aspen HYSYS can be used to study the process of acid gas absorption successfully.
APA, Harvard, Vancouver, ISO, and other styles
4

Puttagounder, Dhanasekaran S., Devi K. Kalla, Bangwei Zhang, and Ramazan Asmatulu. "Sustainability in Nanomanufacturing: Status and Vision for the Future." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50271.

Full text
Abstract:
Nanomaterials and nanomanufacturing is one of the fast growing and interesting fields in recent research and industries, and gaining huge interest around the world. As the nanomaterials has a higher physical and mechanical properties compared to their metal counterparts, it is expected that significant amount (15–20%) of nanomaterials will be put into use in less than five years periods almost in all fields of manufacturing. As the nanomaterial manufacturing is new, it is essential to establish an optimal method so as to reduce wastages and to increase the ratio of output to input materials used. It’s important to use the minimal energy, water and other raw materials. Thus, this review will more concentrate on the sustainability of inputs, need to improve or optimize the production methods or sustainable manufacturing and green gas production and its global effects. Suitability of both top-down and bottom-up processing for nanoparticles will be addressed. Need of life cycle analysis to understand feasibility of recyclable at the end of the life with least possible wastage and reduced energy. Current research on environmental benefits and risk of potential toxicity and health effects of nanoproducts will be discussed.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Top-down input-output' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography