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You searched for: Publication year rev 7982-2018 Remove constraint Publication year rev: 7982-2018 Subject term dynamic models Remove constraint Subject term: dynamic models
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1. A Bayesian approach to estimation of dynamic models with small and large number of heterogeneous players and latent serially correlated states

Author:
A. Ronald Gallant; Han Hong; Ahmed Khwaja
Source:
Journal of econometrics 2018 v.203 no.1 pp. 19-32
ISSN:
0304-4076
Subject:
Bayesian theory; Monte Carlo method; autocorrelation; dynamic models; econometric models; economic theory; market share; product quality; profitability
Abstract:
... We propose a Bayesian approach to estimating dynamic models that can have state variables that are latent, serially correlated, and heterogeneous. Our approach employs sequential importance sampling and is based on deriving an unbiased estimate of the likelihood within a Metropolis chain. Under fairly weak regularity conditions unbiasedness guarantees that the stationary density of the chain is th ...
DOI:
10.1016/j.jeconom.2017.04.004

2. A Computational Fluid Dynamics Model of Biological Heat and Gas Generation in a Dairy Holding Area

Author:
Jessica L. Drewry; Mario R. Mondaca; Brian D. Luck; Christopher Y. Choi
Source:
Transactions of the ASABE v.61 no.2 pp. 449-460
ISSN:
2151-0032
Subject:
air; air flow; animals; dynamic models; greenhouse gases; heat
Abstract:
... The design and operation of ventilation systems for animal housing is a crucial component in maintaining a suitable environment for both animals and workers by removing heat, moisture, and gas species. However, important design and operational criteria, such as profiles of velocity and extent of mixing within animal housing, can be difficult to study experimentally. Thus, a computational fluid dyn ...
DOI:
10.13031/trans.12394

3. A Mass-Transfer Model of Nitric Oxide Removal In a Rotating Drum Biofilter Coupled with FeII(EDTA) Absorption

Author:
Jun Chen; Jiali Wu; Jun Wang; Shihan Zhang; Jianmeng Chen
Source:
Industrial & engineering chemistry process design and development 2018 v.57 no.24 pp. 8144-8151
ISSN:
1520-5045
Subject:
EDTA (chelating agent); absorption; biofilters; denitrification; drums (equipment); dynamic models; liquids; mass transfer; nitric oxide; process design; solubility
Abstract:
... The biological nitric oxide (NO) reduction rate in a rotating drum biofilter (RDB) mainly depends on the mass transfer between the gas and liquid phase because of the poor solubility of NO. This work, aimed to facilitate the gas–liquid (GL) mass transfer of NO in RDB, the Feᴵᴵ(EDTA) was used to capture NO and porous drum was employed to increase the eddy current effect of the system. The denitrifi ...
DOI:
10.1021/acs.iecr.8b00966

4. A Review on Heavy Metal Ions and Dye Adsorption from Water by Agricultural Solid Waste Adsorbents

Author:
Sharmeen Afroze; Tushar Kanti Sen
Source:
Water, air, and soil pollution 2018 v.229 no.7 pp. 225
ISSN:
0049-6979
Subject:
activated carbon; adsorbents; adsorption; agroindustrial byproducts; cost effectiveness; desorption; dyes; dynamic models; heavy metals; metal ions; pollutants; solid wastes; toxicity; wastewater treatment
Abstract:
... Agricultural solid wastes either in natural or in modified forms have been successfully used for decades as non-conventional cost-effective adsorbents for removing metal ions and dyes from their aqueous phase and have been recognized as a sustainable solution for wastewater treatment. Therefore, this review article provides extensive literature information about heavy metals and dyes, their classi ...
DOI:
10.1007/s11270-018-3869-z

5. A System Dynamics Model to Evaluate Effects of Retailer-Led Recycling Based on Dual Chains Competition: A Case of e-Waste in China

Author:
Renzheng Xue; Fengbin Zhang; Feng Tian
Source:
Sustainability 2018 v.10 no.10 pp. -
ISSN:
2071-1050
Subject:
dynamic models; economic development; electronic wastes; environmental impact; income; market competition; market share; recycling; supply chain; China
Abstract:
... China, as the largest electronic waste producer in the world, is facing a critical challenge to manage its negative impacts on the environment. Hence, e-waste management is crucial for sustainable Chinese economic development. In this paper, a system dynamics model is adopted to identify the effects of retailer-led recycling based on closed-loop dual chains competition. The influence of contracts ...
DOI:
10.3390/su10103391

6. A comparison of large-scale climate signals and the North American Multi-Model Ensemble (NMME) for drought prediction in China

Author:
Lei Xu; Nengcheng Chen; Xiang Zhang
Source:
Journal of hydrology 2018 v.557 pp. 378-390
ISSN:
0022-1694
Subject:
Bayesian theory; climate; climate models; drought; dynamic models; hydrology; lead; prediction; rain; statistical analysis; statistical models; summer; China; Yangtze River
Abstract:
... Drought is an extreme natural disaster that can lead to huge socioeconomic losses. Drought prediction ahead of months is helpful for early drought warning and preparations. In this study, we developed a statistical model, two weighted dynamic models and a statistical-dynamic (hybrid) model for 1–6 month lead drought prediction in China. Specifically, statistical component refers to climate signals ...
DOI:
10.1016/j.jhydrol.2017.12.044

7. A dynamic model for managing adulteration risks of dairy industry supply chain in Indonesia

Author:
Muhammad Arwani; Imam Santoso; Nuria Rahmatin
Source:
Advances in Food Science, Sustainable Agriculture, and Agroindustrial Engineering 2018 v.1 no.1 pp. 1-8
ISSN:
2622-5921
Subject:
adulterated products; dairy industry; dynamic models; milk; risk factors; risk reduction; supply chain; supply chain management; sustainable agriculture; Indonesia
Abstract:
... Supply chain has a principal role in supporting the development of milk processing industry. The supply chain of the dairy industry in Indonesia involves a number of actors and a variety of dairy handling that may lead into potential risks and failures. One of the risks affecting supply chain performance is the adulteration of raw materials. This condition can possibly result in the occurrence of ...
DOI:
10.21776/ub.afssaae.2018.001.01.1

8. A dynamic model for thermoelectric generator applied to vehicle waste heat recovery

Author:
Song Lan; Zhijia Yang; Rui Chen; Richard Stobart
Source:
Applied energy 2018 v.210 pp. 327-338
ISSN:
0306-2619
Subject:
carbon dioxide; diesel engines; dynamic models; electric generators; electricity; energy use and consumption; greenhouse gas emissions; heat exchangers; heat recovery; heat transfer coefficient; prototypes; temperature; thermal energy; transmission electron microscopy; wastes
Abstract:
... Waste heat recovery using a thermoelectric generator (TEG) is a promising approach for vehicle original equipment manufacturers to reduce fuel consumption and lower CO₂ emissions. A TEG can convert otherwise wasted thermal energy from engines to electricity directly for use in the vehicle systems. This paper focuses on the development of a dynamic model of TEG system designed for vehicle waste hea ...
DOI:
10.1016/j.apenergy.2017.11.004

9. A dynamic model for water management at the farm level integrating strategic, tactical and operational decisions

Author:
Marion Robert; Alban Thomas; Muddu Sekhar; Hélène Raynal; Éric Casellas; Pierre Casel; Patrick Chabrier; Alexandre Joannon; Jacques-Éric Bergez
Source:
Environmental modelling & software 2018 v.100 pp. 123-135
ISSN:
1364-8152
Subject:
climate change; computer simulation; computer software; dynamic models; environmental models; farmers; farming systems; groundwater; irrigation; issues and policy; rain; resource management; semiarid zones; small farms; socioeconomics; villages; water management
Abstract:
... Farming systems are complex and have several dimensions that interact in a dynamic and continuous manner depending on farmers' management strategies. This complexity peaks in Indian semi-arid regions, where small farms encounter a highly competitive environment for markets and resources, especially unreliable access to water from rainfall and irrigation. NAMASTE, a dynamic computer model for water ...
DOI:
10.1016/j.envsoft.2017.11.013

10. A dynamic model used for controller design for fast cut back of coal-fired boiler-turbine plant

Author:
Di Wang; Yunlong Zhou; Xiaoli Li
Source:
Energy 2018 v.144 pp. 526-534
ISSN:
0360-5442
Subject:
coal; dynamic models; electricity; energy; heaters; mathematical models; power plants; turbines
Abstract:
... Fast cut back (FCB) technology of thermal power plant can restore electricity supply quickly after electric grid fault is repaired. In order to optimize the control technology for FCB, it is necessary to establish an accurate and simple mathematical model for thermal power plant. In this work, a mathematical model of coal-fired boiler-turbine is built up, basing on the balance laws of mass and ene ...
DOI:
10.1016/j.energy.2017.12.053

11. A lumped-parameter dynamical model of a nuclear heating reactor cogeneration plant

Author:
Zhe Dong; Yifei Pan
Source:
Energy 2018 v.145 pp. 638-656
ISSN:
0360-5442
Subject:
computer software; dynamic models; electricity generation; generators (equipment); heat; heat exchangers; heat tolerance; mathematical models; momentum; steam; systems engineering
Abstract:
... Based on the conservation laws of mass, energy and momentum, a lumped-parameter dynamical model is proposed for the nuclear heating reactor cogeneration plant NHR200-II that can be served for electricity production and district heating. This model is mainly composed of the dynamics of the reactor, steam generator, turbine, deaerator, heat exchangers and secondary steam flow network. Then, the stea ...
DOI:
10.1016/j.energy.2017.12.153

12. A model for simulating schedule risks in prefabrication housing production: A case study of six-day cycle assembly activities in Hong Kong

Author:
Clyde Zhengdao Li; Xiaoxiao Xu; Geoffrey Qiping Shen; Cheng Fan; Xiao Li; Jingke Hong
Source:
Journal of cleaner production 2018 v.185 pp. 366-381
ISSN:
0959-6526
Subject:
business enterprises; case studies; computer software; construction industry; dynamic models; humans; model validation; planning; risk; China
Abstract:
... The construction industry in Hong Kong has been exposed to serious housing production issues such as insufficient manpower, safety, environmental concerns and inefficient housing supply. Prefabrication housing production has shown as efficient construction model which enables to overcome these issues and it is applied in construction industry in Hong Kong. In this paper, hybrid modeling techniques ...
DOI:
10.1016/j.jclepro.2018.02.308

13. A modelling approach to assess the long-term stability of a novel microbial/electrochemical system for the treatment of acid mine drainage

Author:
Emma Thompson Brewster; Guillermo Pozo; Damien J. Batstone; Stefano Freguia; Pablo Ledezma
Source:
RSC advances 2018 v.8 no.33 pp. 18682-18689
ISSN:
2046-2069
Subject:
acid mine drainage; bicarbonates; biocathodes; biomass; chlorides; dynamic models; electrochemistry; heavy metals; inorganic carbon; ions; monitoring; remediation; sulfates; sulfur
Abstract:
... Microbial electrochemical processes have potential to remediate acid mine drainage (AMD) wastewaters which are highly acidic and rich in sulfate and heavy metals, without the need for extensive chemical dosing. In this manuscript, a novel hybrid microbial/electrochemical remediation process which uses a 3-reactor system – a precipitation vessel, an electrochemical reactor and a microbial electroch ...
DOI:
10.1039/c8ra03153c

14. A novel surface-cluster approach towards transient modeling of hydro-turbine governing systems in the start-up process

Author:
Hao Zhang; Diyi Chen; Pengcheng Guo; Xingqi Luo; Aggidis George
Source:
Energy conversion and management 2018 v.165 pp. 861-868
ISSN:
0196-8904
Subject:
dynamic models; equations; mathematical models; torque; water power
Abstract:
... Transient process, an essential condition for the operation of the hydro-turbine governing system, is critical for the safety and stability of a hydropower station. This research focuses on the transient modeling and dynamic analysis of the hydro-turbine governing system in the start-up process. A novel approach is developed to establish the dynamic model of the hydro-turbine governing system in t ...
DOI:
10.1016/j.enconman.2018.03.097

15. A preliminary study on ABC estimation approach for ecosystem-based TAC management

Author:
Hee Joong Kang; Young Il Seo; Chang Ik Zhang
Source:
Ocean & coastal management 2018 v.157 pp. 9-22
ISSN:
0964-5691
Subject:
Scomber japonicus; dynamic models; fisheries; mortality; regression analysis; risk; risk analysis; Korean Peninsula
Abstract:
... Korea's acceptable biological catch (ABC) for total allowable catch (TAC) management has been estimated by a five-tier system that relies on population-based stock assessment models according to available ecological information for pelagic or demersal species. To overcome the limitations of the current ABC estimation system based on population dynamic models, this study attempted to integrate the ...
DOI:
10.1016/j.ocecoaman.2018.02.006

16. A stochastic dynamic model of a dairy farm to evaluate the technical and economic performance under different scenarios

Author:
S. Calsamiglia; S. Astiz; J. Baucells; L. Castillejos
Source:
Journal of dairy science 2018 v.101 no.8 pp. 7517-7530
ISSN:
0022-0302
Subject:
Internet; artificial insemination; case studies; cows; dairy farming; days open; decision making; dynamic models; economic factors; economic indicators; economic performance; economic sustainability; environmental factors; farms; heifers; insemination; milk; milk yield; pregnancy rate; profitability; protocols; simulation models
Abstract:
... Dairy farms need to improve their competitiveness through decisions that are often difficult to evaluate because they are highly dependent on many economic and technical factors. The objective of this project was to develop a stochastic and dynamic mathematical model to simulate the functioning of a dairy farm to evaluate the effect of changes in technical or economic factors on performance and pr ...
DOI:
10.3168/jds.2017-12980

17. Accelerating Bayesian inference in hydrological modeling with a mechanistic emulator

Author:
David Machac; Peter Reichert; Jörg Rieckermann; Dario Del Giudice; Carlo Albert
Source:
Environmental modelling & software 2018 v.109 pp. 66-79
ISSN:
1364-8152
Subject:
Bayesian theory; computer software; data collection; dynamic models; hydrologic models
Abstract:
... As in many fields of dynamic modeling, the long runtime of hydrological models hinders Bayesian inference of model parameters from data. By replacing a model with an approximation of its output as a function of input and/or parameters, emulation allows us to complete this task by trading-off accuracy for speed. We combine (i) the use of a mechanistic emulator, (ii) low-discrepancy sampling of the ...
DOI:
10.1016/j.envsoft.2018.07.016

18. Advances in Mechanistic Approaches to Quantifying Biophysical Fire Effects

Author:
J. J. O’Brien; J. K. Hiers; J. M. Varner; C. M. Hoffman; M. B. Dickinson; S. T. Michaletz; E. L. Loudermilk; B. W. Butler
Source:
Current forestry reports 2018 v.4 no.4 pp. 161-177
ISSN:
2198-6436
Subject:
analytical methods; biogeochemistry; dynamic models; energy transfer; fire behavior; fire ecology; fires; forestry; heat transfer; mass transfer; mortality; population dynamics; soil heating; stems; tree damage
Abstract:
... PURPOSE OF REVIEW: The search for causal mechanisms in fire ecology has been slow to progress for two main reasons. First, many fire ecology investigations often occur after fires, with no detailed information on fire behavior. These fire effects are then used to infer both fire behavior and the subsequent effects themselves. Second, that fire behavior is heterogeneous at many scales both spatiall ...
DOI:
10.1007/s40725-018-0082-7

19. African swine fever control and market integration in Ugandan peri-urban smallholder pig value chains: An ex-ante impact assessment of interventions and their interaction

Author:
Emily Ouma; Michel Dione; Rosemirta Birungi; Peter Lule; Lawrence Mayega; Kanar Dizyee
Source:
Preventive veterinary medicine 2018 v.151 pp. 29-39
ISSN:
0167-5877
Subject:
African swine fever; biosecurity; business enterprises; disease control; disease outbreaks; dynamic models; economic impact; economic incentives; farmers; issues and policy; markets; profits and margins; supply chain; swine; swine production; Uganda
Abstract:
... Pig production in peri-urban smallholder value chains in Uganda is severely constrained by impact of disease, particularly African swine fever (ASF), and the economic consequences of an inefficient pig value chain. Interventions in the form of biosecurity to control ASF disease outbreaks and pig business hub models to better link smallholder farmers to pig markets have the potential to address the ...
DOI:
10.1016/j.prevetmed.2017.12.010

20. An Analysis of the Eco-Innovation Mechanism and Policies in the Pulp and Paper Industry Based on Coupled Game Theory and System Dynamics

Author:
Lin MA; Jiayu HU
Source:
Sustainability 2018 v.10 no.10 pp. -
ISSN:
2071-1050
Subject:
bamboos; business enterprises; dynamic models; economic development; ecosystems; farmers; game theory; income; issues and policy; local government; paper; pollution; pulp and paper industry; sustainable technology; wood pulp; China
Abstract:
... The environment is the basis for the living and development of the human, and eco-innovation is the key driver of new economic growth. However, for some underdeveloped regions in China, it is still a challenge for the local government to get a balance between the goals of economic and environment. The paper selects the pulp and paper industry, which creates tremendous pollution to the environment ...
DOI:
10.3390/su10103482