Capacity Evaluation Model Research Articles

The construction and application of a carrying capacity evaluation model in a national park

This work applies ecological footprint analysis to establish the framework of a carrying capacity model for a national park. The model estimates changes in ecological footprint and biocapacity indicators for Taroko National Park (Taiwan) from 2002 to 2011. The findings indicate that: (1) In the past 10 years, the biocapacity status of Taroko National Park has remained within the environmental capacity; however, the per-capita ecological reserve decreased by 73.38 % between 2002 and 2011, from 0.085010 global hectares to 0.022633 global hectares. Evaluation of the ecological footprint intensity index reveals that the park has maintained a level 1 status, the highest ecological security level; (2) Linear estimation undertaken in the study predicts that when the ecological footprint intensity index reaches 0.5—when the ecological security level falls from level 1 (good) to level 2 (fair)—the critical tourist-carrying capacity would be 3,380,351 visitors per year, or 1.18 times the number of tourists in 2011. Furthermore, when the ecological footprint intensity index reaches 0.8—when the ecological security falls to level 3 (poor)—the critical tourist-carrying capacity would be 5,408,561 visitors per year, or 1.88 times the number of tourists in 2011. This work adopted the ecological footprint method and the threshold ecological footprint intensity index value to estimate the critical number of tourists for the sustainable biocapacity of Taroko National Park. The results are intended to serve as a reference for national park administrators to develop policies on tourist carrying capacity.

Modelo de evaluación de la capacidad de acogida del territorio con SIG y técnicas de decisión multicriterio respecto a la implantación de edificaciones en espacios rurales

Se muestra un método, que apoyado en propuestas científicas, ayuda en la planificación del uso sostenible del territorio. Dicho método se basa en los modelos de evaluación de la capacidad de acogida del territorio. Su fundamento es el desarrollo de una metodología de evaluación con una perspectiva amplia de la sostenibilidad rural y contempla la necesaria puesta en valor de los recursos naturales, la preservación del medio por su calidad ambiental y la minimización de los riesgos naturales. Con él se evaluará la implantación de edificaciones relacionadas con el proceso de urbanización difusa en los espacios rurales. Para ello se aborda la evaluación de las condiciones particulares del medio rural en orden a la mejor estimación de sus posibilidades y de su vulnerabilidad respecto a los riesgos naturales. Como resultado se ha realizado una evaluación basada en juicios de valor claramente definidos y en atributos concretos del territorio. Mediante este proceso se obtiene una capa de información que muestra una clasificación del espacio estudiado con una valoración asignada a cada parte del territorio en función de su capacidad para acoger los usos que han sido evaluados.

Study on the Economic Carrying Capacity Evaluation of Chinese Coal Resource

By choosing economic carrying capacity of coal resource as an evaluation index and the economic carrying capacity evaluation models, the paper conducts empirical analysis for economic carrying capacity of Chinese coal resources. The results indicate the economic carrying capacity evaluation of coal resource in China is very low and the economic carrying time is a little shorter and China is also in ecological deficit in this period.

Models for dynamic evaluation of mudstone/shale cap rocks and their applications in the Lower Paleozoic sequences, Sichuan Basin, SW China

The estimation of the sealing capability of cap rocks dynamically is one of the fundamental geological problems that must be resolved in petroleum exploration. In this paper, a porosity–capillary pressure (ϕ–Pc) method was used to estimate the sealing capacity during cap rock burial and a permeability–capillary pressure (K–Pc) plus over-consolidation ratio (OCR) method to estimate the sealing capacity during uplift. Based on 120 capillary pressure–porosity measurements, a ϕ–Pc mathematical model has been established for the burial phase. By analyzing the permeability data measured from 12 mudstone/shale samples from different stratigraphic intervals under step loading conditions, a permeability–confining pressure (K–P) mathematical model has been constructed. Moreover, capillary pressure–permeability data measured from 141 mudstone or shale cap rocks have been used to establish a K–Pc mathematical model for seal capacity evaluation during uplift. Additionally, the OCR of mudstone or shale was calculated from the results of reconstructed burial and uplift histories. These mathematical models were used in case studies in the Sichuan Basin, South China. The results indicate that capillary pressure (Pc) is inadequate in evaluating sealing capacity of cap rocks but the combination of parameters Pc and OCR works well. The agreement between calculated and measured values shows the effectiveness and reliability of the models for dynamic estimation of the sealing capacity of mudstone/shale cap rocks established in this study.

Metro Emergency Management Capacity Assessment Research Based on AHP-FCE Model

Based on the characteristics of the Metro Operation System and the types of accidents, linked with Metro Operation Emergency Management System, this thesis develops a System of Metro Emergency Management Capacity Evaluation Index. Whats more, with the application of Analytic Hierarchy Process (AHP) and Fuzzy Comprehensive Evaluation (FCE), it also sets up the Metro Emergency Management Capacity Evaluation Model AHP - FCE Comprehensive Evaluation Model. Finally, the model comprehensively evaluates the ability of the domestic Metro Operation Emergency Management System. By analyzing the evaluation results, the author finds out the vulnerable spots of the system and puts forward his own opinions for improvement.

Terminal Airspace Sector Optimum Partition Based on Way Points

Abstract. In order to reduce air traffic controller workload, optimized terminal sector partition was studied. The terminal way point capacity evaluation model was built, power polygon divided the terminal area into several units according to the vital way points, each unit workload could be calculated by the European method “RAMS”, and the sector optimum mathematical model was built. One improved ant colony optimization was adopted to solve the model. At last, an example of one terminal airspace sector partition was given. The results show it is an effective method to be applied into sector optimum partition based on way points.

Research on Evaluation Model of Capacity of Self-Innovation about Equipment Manufacturing Based on IAHP and Fuzzy

Research on Evaluation Model of Capacity of Self-Innovation about Equipment Manufacturing Based on IAHP and Fuzzy

Composite Evaluation Model Analysis to Eco-Carrying Capacity of High-Density Residence Communities

This paper built a dynamic evaluation model of eco-carrying capacity of high-density residence communities by using state space representation and GPCA, and made an analysis of the model on dynamics vision,which enriched the content of residential ecological research and offered method for researches about eco-carrying capacity of residence communities.

Two-Layer Fuzzy Comprehensive RSA-ANP-DSS Evaluation Model of Emergency Management Capacity about Enterprise Value Network

The enterprise value network engineering is an effective social business carrier, but the “sudden adversity” or “sudden disaster” often occurs to every internal enterprise in the value network engineering system or outside, which makes the enterprise have to have a good emergency management ability in order to avoid the final crisis. The article uses a system analysis approach to construct a two-layer fuzzy comprehensive evaluation model of emergency management capacity about enterprise value network engineering based on RSA-ANP-DSS research methods, which can provide a decision-making theory foundation for emergency management and improve emergency management capabilities to the “sudden adversity” or “sudden disaster” in the value network engineering.

Water Environmental Carrying Capacity Assessment of an Industrial Park

Abstract Industrial parks are specialized areas that undergo high-intensity economic activities and high-strength resource consumption. Additionally, environmental water carrying capacity is one of the most important supports for sustainable regional development. In this paper, the Fushan Industrial Park in Zhuhai City was selected as a case study, and an integrated evaluation indicator system for environmental water carrying capacity was established according to the environmental and socio-economic status and development plan for this industrial park. The water environmental carrying capacity evaluation model was established according to simulations of socio-economic activity. Our model can forecast the value of assessment indicators to represent their impact degree, which is brought about by socio-economic activities. Next, an entropy indicator assessment method was proposed to analyze the changes in environmental water carrying capacity and to obtain key indicators. The results demonstrate that the industrial park's development can be supported within the carrying capacity of the current environmental water resources. However, it will exceed the carrying capacity in the future if the industrial park develops without any sustainable regulation or ecological protection, such as water saving technology.

Prestressed Concrete Bridge Bearing Capacity Evaluation Based on Analytic Hierarchy Process and Fuzzy Evaluation Method

A bearing capacity evaluation model of prestressed concrete bridge is established based on analytic hierarchy process. In order to determine the bearing capacity of the existing bridge condition, fuzzy evaluation method is used to evaluate material damage degree of bridge structures, in which of experience of experts can be used sufficiently. The method is evident and useful, which can reflect the prestressed concrete bridge in service effectively, improve the existing structure model and optimize the bearing capacity of synthetic evaluation. At the same time, the result is verified reasonably by an engineering example.

Modification of a Highway Capacity Manual Model for Evaluation of Capacity and Level of Service at a Signalized Intersection in India

Modification of a Highway Capacity Manual Model for Evaluation of Capacity and Level of Service at a Signalized Intersection in India

Establishment of Evaluation Index System of Ecological Carrying Capacity in Changping District Pusalu Village

Abstract Base on the establishment of evaluation model of ecological carrying capacity in Beijing shallow mountain area, according to the local conditions of Beijing Changping District Pusalu village, analyze and discuss ecological system composition of Pusalu village, define the index layer and sub-index layer of ecological carrying capacity and ecological stress, lay the foundation for evaluating ecological carrying capacity of Pusalu village.

Empirical Research on Dynamic Evaluation Model of Reservoir Environmental Capacity

Empirical Research on Dynamic Evaluation Model of Reservoir Environmental Capacity

A capacity evaluation and trading model for semiconductor foundry manufacturing

This study addresses a capacity-trading problem for semiconductor foundry manufacturing. Because of the geographic proximity of fabs, a semiconductor foundry with insufficient capacity can purchase capacity from partner fabs as a short-term solution if a capacity-trading agreement has been established. Capacity-trading with partners could be considered as a source for enhancing competitiveness of factory clusters. This investigation presents several linear programming and mixed integer liner programming formulations for establishing the capacity-trading platform. This research was implemented via a computer program with real factory data using mathematical programming formulations capable of rapidly generating reliable solutions. The proposed trading model involves three modules. The first module, a factory scheduling module, allows planners to make capacity outsourcing decisions. Secondly, a tradable capacity economic analysis module identifies capacity requirements and evaluates tradable capacity. Thirdly, optimal resource allocation is obtained using a combinatorial auction module. This research makes two main contributions. A capacity-trading model is to integrate several mathematical programming modules in capacity auction. In addition, this model is presented for short-term flexibility of capacity expansion and combinatorial purchase strategies are designed to solve the large-scale problem.

Investigation of capacity and call admission control schemes in TD‐SCDMA uplink systems employing smart antenna techniques

AbstractDue to the TDMA (time division multiple access)/time division duplex (TDD) specialization in the uplink (UL) of code division multiplex access (CDMA) systems, some advanced techniques, such as smart antenna (SA) and multi‐user detection (MUD), are utilized conveniently in time division‐synchronous code division multiplex access (TD‐SCDMA) systems. These advanced techniques have great impacts on the capacity and radio resource management (RRM) schemes. In this paper, the UL capacity and load models specified for TD‐SCDMA systems are proposed, in which the impacts from SA and MUD techniques are considered, and the UL load can be estimated based on the total received power in the base station. According to the proposed theoretical capacity and load evaluation models, the call admission control (CAC) strategies suitable for TD‐SCDMA systems are presented. Since there are two kinds of SA schemes (i.e., tracking beam antenna (TBA) and switched beam antenna (SBA)) utilized in TD‐SCDMA systems, the efficient CAC algorithms suitable for these two SA schemes are designed and evaluated, which are based on principles of the interference increase estimation. All simulation results show that the proposed CAC strategies can work efficiently and improve performances of TD‐SCDMA systems dramatically. Copyright © 2009 John Wiley & Sons, Ltd.

A Conceptual Model and Assessment Template for Capacity Evaluation in Adult Guardianship

We develop a conceptual model and associated assessment template that is usable across state jurisdictions for evaluating the independent-living capacity of older adults in guardianship proceedings. We used an iterative process in which legal provisions for guardianship and prevailing clinical practices for capacity assessment were integrated, through expert group consensus and external review by legal and health care professionals, to form a conceptual model and template. The model and template provide a structure for conducting and documenting a capacity evaluation in guardianship by using six assessment domains of interest to the courts: (a) medical condition, (b) cognition, (c) functional abilities, (d) values, (e) risk of harm and level of supervision needed, and (f) means to enhance capacity. The template also addresses the participation of the person in the guardianship hearing, confidentiality and privilege issues, and certification by the examiner. An online version of the template can be adapted to address specific jurisdictional requirements. A conceptual model and evaluation template provide a useful cross-jurisdictional format for conducting and documenting capacity assessments of older adults in guardianship proceedings. The template may be particularly useful to clinicians for providing courts with information to support limited guardianship orders.

Capacity Evaluation of Exterior Sacrificial Shear Keys of Bridge Abutments

Shear keys are used in bridge abutments to provide transverse support for the superstructure. The damage observed on bridge abutments in the aftermath of the 1994 Northridge Earthquake prompted the revision of the design of shear keys. As part of this revision, experimental and analytical work was conducted to investigate the seismic behavior of exterior shear keys in bridge abutments designed in accordance with current guidelines and to investigate shear keys designed for damage control. The latter work was aimed at providing guidance for seismic design of shear keys to act as structural fuses that would limit the input force in the abutment piles. Ten shear keys were designed and built at 1:2.5 scale of a prototype abutment design provided by Caltrans. The study concluded that a smooth construction joint should be considered at the interface of the shear key–abutment stem wall to allow sliding shear failure. A mechanism model was developed for capacity evaluation of shear keys with sliding shear failure. The results of the experimental program and development of the simple analytical model for capacity evaluation of exterior shear keys are presented in this paper.

Outer loop power control in CDMA systems with on-board power constraints

This paper aims at clarifying the role of the outer loop power control for CDMA satellite systems with on-board power constraints. If the inner loop of the power control is perfect, the channel turns into a AWGN channel and there is no need of the outer loop. In satellite CDMA sytsems, due to the longer propagation delay with respect to a terrestrial system, the inner loop of power control is only partly able to track power variations due to fast fading. Moreover, the Rice factor, which characterizes the channel statistics, can widely vary even if the user does not move but just because of the change of the elevation angle. Because of that, a wide range of target SNIR (and larger than in typical terrestrial systems) may be necessary to get the same BER performance. Therefore, the outer loop power control turns out to be essential to minimize the dynamic of the power link margins and avoid capacity degradations induced by the systematic use of static link margins. A semi-analytical model for the capacity evaluation has been developed, which is specifically intended for the power-limited satellite-to-mobile link with multi satellite reception. We found that the capacity gain with respect to pure SNIR-based strategy (i.e. only inner loop) can reach the 40% of the total capacity in a single reception scheme. A smaller, but still noticeable capacity gain of the order of 20-30% is observed in the presence of satellite diversity. Therefore, any dimensioning of CDMA satellite systems should neglet this component of the power control.

Development of a practical model for capacity evaluation of ultrapure water systems

Modern ultrapure water (UPW) systems designed for the semiconductor manufacturing industry are very complex nowadays, especially when wastewater recycling is part of the configuration. In this paper, we developed a practical model for system evaluation by correlating the actual UPW consumption rate, TI, with the velocity of water level changes (ν) in the storage tank. It was found that the UPW consumption rate is a sole function of the velocity of water level changes in the water storage tank that could be described by the following equation: ν 1-Kv. The model was then applied to a standardized UPW system to examine its accuracy and found good agreement between the estimated and actual results. When process-to-process recycling is included in the model, the equation is still valid; however, the system-related coefficient K decreases with increasing recycling capacity. By properly estimating the engineering parameters of an UPW system, a generic ν graph can also be plotted based on this equation. This ν graph provides accurate UPW flowrate information as the variation ofwater levels in the DI storage tank is monitored online, which can be easily used for capacity evaluation of an UPW system operating with or without wastewater recycling at the outset of any UPW expansion project.