a simple system dynamics model
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Adamsen, Paul B. - Frameworks for Complex System Development [CRC Press 2000] Episode 1 Part 4 ppsx
... QnominalQPhase avgQPhase avg (4.3) where the values of Qnominal, QPhase 1, and QPhase are the instantaneous values at the time QPhase is calculated If k equals the number of phases in the hierarchy, ... nominal quality of the phase in question times the average quality of the input data Thus, each phase starts at a quality level, Q, equaling its nominal quality times the quality of the input data ... second variable for quality is called “average quality.” Once the program starts, it is calculated Average quality, Qavg, is defined as: Qavg = Work Done Work Done + Rework (4.1) As the program progresses,...
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báo cáo sinh học:" Forecasting the need for medical specialists in Spain: application of a system dynamics model" potx
... stock variables are represented as squares, flow variables are circles and constants are diamonds Equations represent mathematical relationships between variables The System Dynamics simulation model ... structures and interactions of feedback loops, and consists of variables for cause and effect, and causal links A causal link connects a cause variable with an effect variable by a link with a positive ... loops diagram, stock and flow diagrams and equations Causal loops include feedback loops, reinforcing (+) and balancing (-) In the stock and flow diagram, system dynamics standard notation is...
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Báo cáo khoa học: "A Simple, Similarity-based Model for Selectional Preferences" pdf
... generalization paradigms that we are aware of, Gildea and Jurafsky’s (2002) task-based evaluation has found clusteringbased approaches to have better coverage than WordNet generalization, that ... charts the number of seen headwords against error rate for a Jaccard similarity-based model (uniform weights) As can be seen, error rates reach a plateau at about 25 seen headwords for Jaccard ... generalization corpus Our primary corpus will consist of manually semantically annotated data, and we will use semantic verb classes as pred2 icates and semantic roles as arguments ExFor details about...
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A bayesian system for modeling promoter structure a case study of histone promoters
... R09798 CAATCAGGTCCG H4TF2/HinF-P binding site: H4TF2 (Pauli et al 1987, R00681 La Bella and Heintz 1991, Mitra et al 2003) AC-box: H1TF1 (La Bella et al 1989), HiNF -A (van AACAAACACAA Wijnen et al ... transcription factor (OTF-1) (Fletcher R00662 ATGCAAATGAGG et al 1987) CTATAAAAACC TATA-box: TBP, TFIID (Nakajima et al 1988) R00770 TTTTCGCGCCCA E2F-binding site: E2F-1 factor (Oswald et al ... et al 2003), R00660 H1TF2 (La Bella et al 1989; Martinelli and Heintz 1994; Gallinari et al 1989) CCATTGGTTAAA CCAAT-box: H1TF2 (La Bella et al 1989; Martinelli R00660 and Heintz 1994; Gallinari...
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Exergoeconomic optimization and improvement of a cogeneration system modeled in a process simulator using direct search and evolutionary methods
... exergoeconomic analysis of the system at each iteration and on several qualitative and quantitative objective criteria, a hierarchical classification of the system components, and the associated subsets ... Exergy accounting: Capabilities and drawbacks Energy 2006, 31(1), 164-180 Giannantoni C., Lazzaretto A. , Macor A. , Mirandola A. , Stoppato A. , Tonon S., Ulgiati S Multicriteria approach for the improvement ... algorithm Decision variable Case Case EIS EIS Alternative Alternative Mathematical EIS optimization Alternative EIS Alternative Mathematical optimization GT01.kW (kW) GT0 1a. kW (kW) 40601 40601...
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Shaking a box of sand I – a simple lattice model
... density may attain values that are substantially higher than random close packing, and quite close to the crystalline limit [131, 132] An analogous transition has also been observed experimentally ... use as an order parameter The vertical orientation of a grain thus wastes space proportional to − a, relative to the horizontal one We examine the response of the packing fraction for typical parameter ... granular dynamics will carry all the usual characteristics of ageing ξdyn so that ω 1; from Eq (7.14), this Now recall that that in Regime II, ξeq implies that the grain is nearly square (a ∼...
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Tài liệu A Comparison of High-Level Full-System Power Models ppt
... performance-counter-based model uses memory activity as a parameter, it is no surprise that the performancecounter-based models are most accurate Finally, the models are all quite accurate for the disk-intensive ... where C2 and r are additional fitted parameters The fourth model, similar to that proposed by Heath et al., is a linear model that uses disk utilization in addition to CPU utilization [6] To model ... portable across systems For some systems, simpler approaches may be just as good The Mantis modeling methodology allows an entire family of models to easily be developed, and their trade-offs evaluated,...
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Sprite: A Simple, Cheat-Proof, Credit-Based System for Mobile Ad-Hoc Networks potx
... Discussion and extension The above approach is secure for route discovery Its security can be argued in a similar way as the unicast case As route-discovery broadcast can be viewed as a special case ... send a message and that of an intermediate node to forward a message, respectively We observe that RSA has a much smaller forwarding overhead Thus, if reducing forwarding overhead is the major ... misbehaving nodes, and a pathrater, which selects routes that avoid the identified nodes Their simulations showed that these two tools can maintain the total throughput of an ad hoc network at an acceptable...
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Báo cáo khoa học: Identification of sodium salicylate as an hsp inducer using a simple screening system for stress response modulators in mammalian cells pptx
... Ishihara, K., Yasuda, K & Hatayama, T (1999) Molecular cloning, expression and localization of human 105 kDa heat shock protein, Hsp105 Biochim Biophys Acta 1444, 138–142 16 Yasuda, K., Nakai, A. , ... 3465 Activation of HSF by SA and accumulation of Hsp10 5a and Hsp70 To examine whether SA enhances heat shock promoter activity by activating HSF, a gel mobility shift assay using 32 P-labelled ... cells SA has a potent anti-inflammatory effect mediated by suppression of the production of inflammatory mediators by inhibition of cyclooxygenase and nuclear factor-kappa B activation [9,10] In addition...
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Agency and Consciousness in Discourse: Self-other Dynamics as a Complex System ppt
... Prevignano, Duane Savage-Rumbaugh, Susan SavageRumbaugh, Zhang Shaojie, Jared Tagliatela, Godfrey Tanner, Amy Tsui, Theo van Leeuwen, Eija Ventola, and David Wallace To my daughter, Ilaria, many thanks ... include Basil Bernstein, Mikhail Bakhtin, Robert de Beaugrande, James J Gibson, Michael Halliday, Ruqaiya Hasan, Walter Kauffman, Lakoff & Johnson, Jay Lemke, Jean Piaget, Stanley Salthe, xii Preface ... dyad evidence protometafunctional characteristics Language (not protolanguage) is internally organized along metafunctional lines The metafunctional organization of language form is an order parameter...
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System dynamics applied to project management: a survey, assessment, and directions for future research potx
... and (4) management training and education We briefly describe the general area of application and the role system dynamics models have played, then illustrate with specific applications that have ... modeling and goal-oriented measurement Park and Pena-Mora (Park, 2001; Park and Pena-Mora, 2003, 2004) propose and apply an integration of dynamic schedule buffering using a system dynamics model ... simulator—supporting diagnostic and educational materials are also needed Developing a useful system dynamics project model- based teaching tool for widespread project management training and education...
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Báo cáo hóa học: " Spontaneous voltage oscillations and response dynamics of a Hodgkin-Huxley type model of sensory hair cells" ppt
... IK1 and Ih , are activated by hyperpolarization A fast inactivating outward potassium current (A- type) was not included, as it had negligible effect on the dynamics of the membrane potential [16] ... neuronal models [37, 38] While the two-parameter bifurcation diagram in Figure was obtained using parameter continuation software CONTENT and MATCONT [24, 25], the one-parameter bifurcation diagram ... basis of Equation for a random Gaussian force that was band-limited to 200 Hz and had a standard deviation of σs = pN (b) Sensitivity as a function of the amplitude of the sinusoidal external...
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Báo cáo hóa học: " Modeling of polyethylene, poly(l-lactide), and CNT composites: a dissipative particle dynamics study" docx
... assumed that a range of a has a linear variation between 15 and 115, with a c value of 0.3 at a a = 15 and a value of 0.2 at a = 15 After modifying a, the surface tension is a constant and ... between the same materials are 38.403 When the repulsive interaction parameter between different materials is larger than that between the same material, it means that these two materials have stronger ... details Department of Mechanical and Electro-Mechanical Engineering, Center for Nanoscience and Nanotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan 804 2Material & Chemical Research...
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Báo cáo hóa học: " Research Article Dynamics of a Rational System of Difference Equations in the Plane" pot
... mapping a1 /ak , a2 /ak , , ak /ak for a1 , a2 , , ak ∈ Rk with given by q a1 , a2 , , ak k k a1 , a2 , , ak , , it is shown in such ak / and : R → R is given by a1 , a2 , , ak ... Netherlands, 1993 M R S Kulenovi´ and G Ladas, Dynamics of Second Order Rational Difference Equations, Chapman & c Hall/CRC, Boca Raton, Fla, USA, 2002 E Camouzis, M R S Kulenovi´ , G Ladas, and ... that P1 if and only if x0 and, in such case, xn and yn takes alternatively the values A 1 and A 1 β1 with A P2 P3 / P2 − P3 Notice that y0 / guaranties P2 P3 / and, since β1 / 0, we can not have...
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Báo cáo hóa học: " Research Article A Framework for System-Level Modeling and Simulation of Embedded Systems Architectures" ppt
... layer, architecture model layer, and the mapping layer which is an interface between application and architecture models THE SESAME APPROACH The Sesame modeling and simulation environment facilitates ... architectures Rather than using the traces as input to an architecture simulator, their traces are analyzed statically In addition, a traditional hardware/software cosimulation stage is required ... from the popular SystemC language in a number of important aspects Pearl, implementing the messagepassing mechanism, abstracts away the concept of ports and Cagkan Erbas et al class Idct: public...
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Báo cáo khoa hoc:" Peripheral nervous system manifestations in a Sandhoff disease mouse model: nerve conduction, myelin structure, lipid analysis" pot
... distribution, and live a normal life span around years [9] By postnatal day 5, the Hexb-/- mice exhibit GM2 and, its asialo derivative, GA2 accumulation in the brain [10] This accumulation of GM2 parallels ... disease Neurobiol Dis 2004, 16(3):506-515 Sango K, Yamanaka S, Hoffmann A, Okuda Y, Grinberg A, Westphal H, McDonald MP, Crawley JN, Sandhoff K, Suzuki K, et al.: Mouse models of Tay-Sachs and Sandhoff ... 10(4):433-439 Sango K, Yamanaka S, Ajiki K, Tokashiki A, Watabe K: Lysosomal storage results in impaired survival but normal neurite outgrowth in dorsal root ganglion neurones from a mouse model of Sandhoff...
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Báo cáo y học: "A unified framework of immunological and epidemiological dynamics for the spread of viral infections in a simple network-based population" ppt
... parameter values and Variations accumulated viral load their effect on the populaVariations in parameter values and their effect on the population-wide accumulated viral load Additional parameter ... responsiveness and the overall behaviour of an outbreak (A) , as well as the overall severity an outbreak (B), as measured by the mean and accumulated viral load in the population, respectively Mean and accumulated ... (black and red lines) occurs Figure after (A) and accumulated (B) viral Mean100 Monte Carlo realizations loads in the population Mean (A) and accumulated (B) viral loads in the population after...
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Báo cáo y học: "Scenario based outdoor simulation in pre-hospital trauma care using a simple mannequin model" ppsx
... Commonly available simple mannequin models include the Laerdal Resuscitation Anne, Ultimate Hurt, Crash Kelly and AmbuMan Requirements for a simple mannequin” are shown in Additional file Background ... imagination and creativity of the facilitator and other staff is important for creating a scene that takes the participant into “the zone” Bredmose et al Scandinavian Journal of Trauma, Resuscitation and ... skills such as scene safety assessment, situational awareness, teamwork and crew resource management will be practiced in almost all team based simulations A realistic mechanism of injury and environmental...
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Báo cáo y học: "Risk assessment in the first fifteen minutes: a prospective cohort study of a simple physiological scoring system in the emergency department" ppsx
... score can help to select patients who can be treated as outpatients should be studied separately Our hospital serves as a primary care centre for a large urban area as well as a tertiary care centre ... established MET criteria might aid in early recognition of patients at risk of an unfavourable outcome Materials and methods Setting Table Vital Sign Scoring parameters Airway • threatened airway: ... ED patients TM and DB performed the statistical analysis The manuscript was drafted by TM, assisted by JW and JT All authors read and revised the manuscript drafts and approved the final manuscript...
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Báo cáo sinh học: " A simple algorithm to estimate genetic variance in an animal threshold model using Bayesian inference" docx
... was calculated as: h = a + a e AnimB: Same model as AnimA, except that additive genetic variance was sampled using the new algorithm as described above Heritability was calculated as in model ... algorithm (AnimB) Here, mixing was much faster, and the samples were within a reasonable parameter space, given an input heritability of 0.20 Finally, the same dataset was analyzed using a standard ... p a a = p a p a × p a np a , a p ( ) ∝ N 0, A sd a × N ( 2 Z pa p , I a ) ), where Asd is the additive relationship matrix for sires and dams As Mendelian sampling deviations of nonparents...
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