Relevant bibliographies by topics / SSAM

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
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Academic literature on the topic 'SSAM'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "SSAM"

1

Bhowmick, Patit P., Devananda Devegowda, H. A. Darshanee Ruwandeepika, Iddya Karunasagar, and Indrani Karunasagar. "Presence of Salmonella pathogenicity island 2 genes in seafood-associated Salmonella serovars and the role of the sseC gene in survival of Salmonella enterica serovar Weltevreden in epithelial cells." Microbiology 157, no. 1 (January 1, 2011): 160–68. http://dx.doi.org/10.1099/mic.0.043596-0.

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The type III secretion system encoded by the Salmonella pathogenicity island 2 (SPI-2) has a central role in the pathogenesis of systemic infections by Salmonella. Sixteen genes (ssaU, ssaB, ssaR, ssaQ, ssaO, ssaS, ssaP, ssaT, sscB, sseF, sseG, sseE, sseD, sseC, ssaD and sscA) of SPI-2 were targeted for PCR amplification in 57 seafood-associated serovars of Salmonella. The sseC gene of SPI-2 was found to be absent in two isolates of Salmonella enterica serovar Weltevreden, SW13 and SW39. Absence of sseC was confirmed by sequencing using flanking primers. SW13 had only 66 bp sequence of the sseC gene and SW39 had 58 bp sequence of this gene. A clinical isolate, S. Weltevreden – SW3, 10 : r : z6 – was used to construct a deletion mutant for the sseC gene. Significant reduction in the survival of SW3, 10 : r : z6 ΔsseC and natural mutants SW13 and SW39 in HeLa cells suggests that sseC has a crucial role in the intracellular survival of S. Weltevreden. Expression of sseC was upregulated during the intracellular phase of both S. enterica serovar Typhimurium and clinical isolate S. Weltevreden SW3, 10 : r : z6, suggesting a crucial role for this gene in the survival of S. Weltevreden inside host cells.
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Werner-Washburne, M., D. E. Stone, and E. A. Craig. "Complex interactions among members of an essential subfamily of hsp70 genes in Saccharomyces cerevisiae." Molecular and Cellular Biology 7, no. 7 (July 1987): 2568–77. http://dx.doi.org/10.1128/mcb.7.7.2568.

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Saccharomyces cerevisiae contains a large family of genes related to hsp70, the major heat shock-inducible gene of Drosophila melanogaster. One subfamily, identified by sequence homology, contains four genes, SSA1, SSA2, SSA3, and SSA4 (formerly YG100, YG102, YG106, and YG107, respectively). Previous studies showed that strains containing mutations in SSA1 and SSA2 are temperature sensitive for growth. SSA4, which is normally heat inducible and not expressed during vegetative growth, is expressed at high levels in ssa1 ssa2 strains at 23 degrees C. We constructed mutations in SSA3 and SSA4 and analyzed strains carrying mutations in the four genes. Strains carrying mutations in SSA3 SSA4 or SSA3 and SSA4 were indistinguishable from the wild type. However, ssa1 ssa2 ssa4 strains were inviable. SSA3, like SSA4, is a heat-inducible gene that is not normally expressed at 23 degrees C. Nevertheless, an intact copy of SSA3 regulated by the constitutive SSA2 promoter was capable of rescuing a ssa1 ssa2 ssa4 strain. This indicates that SSA3 encodes a functional protein and that the SSA1, SSA2, SSA3, and SSA4 gene products are functionally similar.
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Werner-Washburne, M., D. E. Stone, and E. A. Craig. "Complex interactions among members of an essential subfamily of hsp70 genes in Saccharomyces cerevisiae." Molecular and Cellular Biology 7, no. 7 (July 1987): 2568–77. http://dx.doi.org/10.1128/mcb.7.7.2568-2577.1987.

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Saccharomyces cerevisiae contains a large family of genes related to hsp70, the major heat shock-inducible gene of Drosophila melanogaster. One subfamily, identified by sequence homology, contains four genes, SSA1, SSA2, SSA3, and SSA4 (formerly YG100, YG102, YG106, and YG107, respectively). Previous studies showed that strains containing mutations in SSA1 and SSA2 are temperature sensitive for growth. SSA4, which is normally heat inducible and not expressed during vegetative growth, is expressed at high levels in ssa1 ssa2 strains at 23 degrees C. We constructed mutations in SSA3 and SSA4 and analyzed strains carrying mutations in the four genes. Strains carrying mutations in SSA3 SSA4 or SSA3 and SSA4 were indistinguishable from the wild type. However, ssa1 ssa2 ssa4 strains were inviable. SSA3, like SSA4, is a heat-inducible gene that is not normally expressed at 23 degrees C. Nevertheless, an intact copy of SSA3 regulated by the constitutive SSA2 promoter was capable of rescuing a ssa1 ssa2 ssa4 strain. This indicates that SSA3 encodes a functional protein and that the SSA1, SSA2, SSA3, and SSA4 gene products are functionally similar.
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Nelson, R. J., M. F. Heschl, and E. A. Craig. "Isolation and characterization of extragenic suppressors of mutations in the SSA hsp70 genes of Saccharomyces cerevisiae." Genetics 131, no. 2 (June 1, 1992): 277–85. http://dx.doi.org/10.1093/genetics/131.2.277.

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Abstract Saccharomyces cerevisiae strains that contain null alleles of two hsp70 genes, SSA1 and SSA2, are temperature sensitive for growth. In this study, extragenic suppressors of ssa1 ssa2 have been isolated. Suppression is due to mutations at nuclear loci designated EXA1, EXA2 and EXA3 for EXtragenic suppressor hsp70 subfamily A. Two of the four EXA1 alleles are dominant as is EXA3-1. The other two EXA1 alleles as well as the sole EXA2 allele are recessive. EXA1 mutations lead to accumulation of a previously uncharacterized form of hsp70. EXA2 and EXA3 mutations affect the regulation of the stress response. In exa2-1 ssa1 ssa2 strains the gene products of the remaining SSA hsp70 genes, SSA3 and SSA4 (Ssa3/4p), accumulate to higher levels. The EXA3-1 mutation results in increased accumulation of both Ssa3/4p and the hsp70s encoded by the SSB1 and SSB2 genes (Ssb1/2p), suggesting that the EXA3 gene product plays a central role in the yeast stress response. Consistent with this hypothesis, EXA3-1 is tightly linked to HSF1, the gene encoding the transcriptional regulatory protein known as "heat shock factor." All of the genes identified in this study seem to be involved in regulating the expression of SSA3 and SSA4 or the activity of their protein products.
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Grassi, Lorenzo, Sami P. Väänänen, Matti Ristinmaa, Jukka S. Jurvelin, and Hanna Isaksson. "Prediction of femoral strength using 3D finite element models reconstructed from DXA images: validation against experiments." Biomechanics and Modeling in Mechanobiology 16, no. 3 (December 21, 2016): 989–1000. http://dx.doi.org/10.1007/s10237-016-0866-2.

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Abstract Computed tomography (CT)-based finite element (FE) models may improve the current osteoporosis diagnostics and prediction of fracture risk by providing an estimate for femoral strength. However, the need for a CT scan, as opposed to the conventional use of dual-energy X-ray absorptiometry (DXA) for osteoporosis diagnostics, is considered a major obstacle. The 3D shape and bone mineral density (BMD) distribution of a femur can be reconstructed using a statistical shape and appearance model (SSAM) and the DXA image of the femur. Then, the reconstructed shape and BMD could be used to build FE models to predict bone strength. Since high accuracy is needed in all steps of the analysis, this study aimed at evaluating the ability of a 3D FE model built from one 2D DXA image to predict the strains and fracture load of human femora. Three cadaver femora were retrieved, for which experimental measurements from ex vivo mechanical tests were available. FE models were built using the SSAM-based reconstructions: using only the SSAM-reconstructed shape, only the SSAM-reconstructed BMD distribution, and the full SSAM-based reconstruction (including both shape and BMD distribution). When compared with experimental data, the SSAM-based models predicted accurately principal strains (coefficient of determination >0.83, normalized root-mean-square error <16%) and femoral strength (standard error of the estimate 1215 N). These results were only slightly inferior to those obtained with CT-based FE models, but with the considerable advantage of the models being built from DXA images. In summary, the results support the feasibility of SSAM-based models as a practical tool to introduce FE-based bone strength estimation in the current fracture risk diagnostics.
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Brasier, Clive, Selma Franceschini, Jack Forster, and Susan Kirk. "Enhanced Outcrossing, Directional Selection and Transgressive Segregation Drive Evolution of Novel Phenotypes in Hybrid Swarms of the Dutch Elm Disease Pathogen Ophiostoma novo-ulmi." Journal of Fungi 7, no. 6 (June 6, 2021): 452. http://dx.doi.org/10.3390/jof7060452.

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In the 1970s, clones of the two subspecies of Ophiostoma novo-ulmi, subsp. americana (SSAM) and subsp. novo-ulmi (SSNU) began to overlap in Europe, resulting in hybrid swarms. By 1983–1986, hybrids with high, SSAM-like growth and pathogenic fitness comprised ~75% of popula-tions at Limburg, Netherlands and Orvieto, Italy. We resampled these populations in 2008 to examine trends in hybrid fitness traits. Since preliminary sampling in 1979–1980, MAT-1 locus frequency had increased from ~0% to ~32% at Orvieto and 5% to ~43% at Limburg, and vegeta-tive incompatibility type frequency had changed from near clonal to extremely diverse at both sites. This represents an enormous increase in outcrossing and recombination potential, due in part to selective acquisition (under virus pressure) of MAT-1 and vic loci from the resident O. ulmi and in part to SSAM × SSNU hybridisation. Overt virus infection in the 2008 samples was low (~4%), diagnostic SSAM and SSNU cu and col1 loci were recombinant, and no isolates exhib-ited a parental SSAM or SSNU colony pattern. At both sites, mean growth rate and mean patho-genicity to 3–5 m clonal elm were high SSAM-like, indicating sustained directional selection for these characters, though at Orvieto growth rate was slower. The once frequent SSNU-specific up-mut colony dimorphism was largely eliminated at both sites. Perithecia formed by Limburg isolates were mainly an extreme, long-necked SSNU-like form, consistent with transgressive segregation resulting from mismatch of SSAM and SSNU developmental loci. Orvieto isolates produced more parental-like perithecia, suggesting the extreme phenotypes may have been se-lected against. The novel phenotypes in the swarms are remodelling O. novo-ulmi in Europe. Locally adapted genotypes may emerge.
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Harder, Phillip, Warren D. Helgason, and John W. Pomeroy. "Modeling the Snowpack Energy Balance during Melt under Exposed Crop Stubble." Journal of Hydrometeorology 19, no. 7 (July 1, 2018): 1191–214. http://dx.doi.org/10.1175/jhm-d-18-0039.1.

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Abstract On the Canadian Prairies, agricultural practices result in millions of hectares of standing crop stubble that gradually emerges during snowmelt. The importance of stubble in trapping wind-blown snow and retaining winter snowfall has been well demonstrated. However, stubble is not explicitly accounted for in hydrological or energy balance snowmelt models. This paper relates measurable stubble parameters (height, width, areal density, and albedo) to the snowpack energy balance and snowmelt with the new, physically based Stubble–Snow–Atmosphere Model (SSAM). Novel process representations of SSAM quantify the attenuation of shortwave radiation by exposed stubble, the sky and vegetation view factors needed to solve longwave radiation terms, and a resistance scheme for stubble–snow–atmosphere fluxes to solve for surface temperatures and turbulent fluxes. SSAM results were compared to observations of radiometric snow-surface temperature, stubble temperature, snow-surface solar irradiance, areal-average turbulent fluxes, and snow water equivalent from two intensive field campaigns during snowmelt in 2015 and 2016 over wheat and canola stubble in Saskatchewan, Canada. Uncalibrated SSAM simulations compared well with these observations, providing confidence in the model structure and parameterization. A sensitivity analysis conducted using SSAM revealed compensatory relationships in energy balance terms that result in a small increase in net snowpack energy as stubble exposure increases.
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Wu, Mike, Marzyeh Ghassemi, Mengling Feng, Leo A. Celi, Peter Szolovits, and Finale Doshi-Velez. "Understanding vasopressor intervention and weaning: risk prediction in a public heterogeneous clinical time series database." Journal of the American Medical Informatics Association 24, no. 3 (October 5, 2016): 488–95. http://dx.doi.org/10.1093/jamia/ocw138.

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Background: The widespread adoption of electronic health records allows us to ask evidence-based questions about the need for and benefits of specific clinical interventions in critical-care settings across large populations. Objective: We investigated the prediction of vasopressor administration and weaning in the intensive care unit. Vasopressors are commonly used to control hypotension, and changes in timing and dosage can have a large impact on patient outcomes. Materials and Methods: We considered a cohort of 15 695 intensive care unit patients without orders for reduced care who were alive 30 days post-discharge. A switching-state autoregressive model (SSAM) was trained to predict the multidimensional physiological time series of patients before, during, and after vasopressor administration. The latent states from the SSAM were used as predictors of vasopressor administration and weaning. Results: The unsupervised SSAM features were able to predict patient vasopressor administration and successful patient weaning. Features derived from the SSAM achieved areas under the receiver operating curve of 0.92, 0.88, and 0.71 for predicting ungapped vasopressor administration, gapped vasopressor administration, and vasopressor weaning, respectively. We also demonstrated many cases where our model predicted weaning well in advance of a successful wean. Conclusion: Models that used SSAM features increased performance on both predictive tasks. These improvements may reflect an underlying, and ultimately predictive, latent state detectable from the physiological time series.
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Kim, Kyung Min, Mitsuru Saito, Grant G. Schultz, and Dennis L. Eggett. "Evaluating Safety Impacts of Access Management Alternatives with the Surrogate Safety Assessment Model." Transportation Research Record: Journal of the Transportation Research Board 2672, no. 17 (May 14, 2018): 120–28. http://dx.doi.org/10.1177/0361198118773505.

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In a traditional safety impact analysis, it is necessary to have crash data on existing roadway conditions and a few years must pass before accumulating additional crash data to evaluate the safety impact of an improvement. This is a time-consuming approach and there remains uncertainty in the crash data integrity. The surrogate safety assessment model (SSAM) was developed for resolving these issues. With SSAM, a conflict analysis is performed in a simulated environment. A planned improvement alternative is modeled and no physical installation of the alternative is needed. This study evaluated if SSAM can be used to assess the safety of a highway segment in terms of the number and type of conflicts and to compare the safety effects of multiple access management alternatives. An evaluation of the effect of converting a two-way left-turn lane (TWLTL) into a raised median on a section of an urban street was performed using SSAM working on VISSIM simulation’s trajectory files. The analysis showed that a raised median would be much safer than a TWLTL median for the same level of traffic volume, with approximately 32 to 50 percent reduction in the number of crossing conflicts. The analysis showed that about 34,000 to 38,000 veh/day would be the demand level where the median conversion is recommended for the four-lane study section. The study concluded that the combination of a simulation software program with SSAM could be a viable surrogate analysis approach for evaluating and comparing the safety effects of multiple access management alternatives.
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Essa, Mohamed, and Tarek Sayed. "Comparison between Surrogate Safety Assessment Model and Real-Time Safety Models in Predicting Field-Measured Conflicts at Signalized Intersections." Transportation Research Record: Journal of the Transportation Research Board 2674, no. 3 (February 27, 2020): 100–112. http://dx.doi.org/10.1177/0361198120907874.

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Traffic simulation models are frequently used to evaluate the safety of signalized intersections, especially when testing unconventional designs or investigating the effects of emerging technologies such as connected and autonomous vehicles. In this approach, vehicle trajectories extracted from traffic simulation are usually analyzed using the surrogate safety assessment model (SSAM) to estimate the number and severity of traffic conflicts. However, recent research has shown that evaluating safety using SSAM has several limitations. First, a rigorous calibration procedure must be applied to the simulation model to obtain reliable conflict results. Second, simulation models in many cases do not accurately represent actual driving behavior. Subsequently, they often fail to capture the actual mechanisms generating near-misses. This paper presents a new procedure, alternative to SSAM, for evaluating the safety of signalized intersections. The procedure combines simulated vehicle trajectories with real-time safety models to predict rear-end conflicts. The conflict prediction is based on dynamic traffic parameters, such as traffic volume and shock wave characteristics, repeatedly measured over a short time interval (a few seconds). To validate the proposed procedure, its performance was investigated in predicting traffic conflicts extracted from 54 hours of real-world video data at two signalized intersections in the city of Surrey, British Columbia. The predicted conflict results were compared with SSAM. Overall, the results showed that the proposed procedure outperforms SSAM in relation to accuracy of conflict prediction. Lastly, a case study of using the proposed procedure in evaluating the safety impact of a recently developed connected-vehicles application is presented.
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Dissertations / Theses on the topic "SSAM"

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Wang, Chen. "A NEW SIMULATION-BASED CONFLICT INDICATOR AS A SURROGATE MEASURE OF SAFETY." UKnowledge, 2012. http://uknowledge.uky.edu/ce_etds/3.

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Traffic safety is one of the most essential aspects of transportation engineering. However, most crash prediction models are statistically-based prediction methods, which require significant efforts in crash data collection and may not be applied in particular traffic environments due to the limitation of data sources. Traditional traffic conflict studies are mostly field-based studies depending on manual counting, which is also labor-intensive and oftentimes inaccurate. Nowadays, simulation tools are widely utilized in traffic conflict studies. However, there is not a surrogate indicator that is widely accepted in conflict studies. The primary objective of this research is to develop such a reliable surrogate measure for simulation-based conflict studies. An indicator named Aggregated Crash Propensity Index (ACPI) is proposed to address this void. A Probabilistic model named Crash Propensity Model (CPM) is developed to determine the crash probability of simulated conflicts by introducing probability density functions of reaction time and maximum braking rates. The CPM is able to generate the ACPI for three different conflict types: crossing, rear-end and lane change. A series of comparative and field-based analysis efforts are undertaken to evaluate the accuracy of the proposed metric. Intersections are simulated with the VISSIM micro simulation and the output is processed through SSAM to extract useful conflict data to be used as the entry into CPM model. In the comparative analysis, three studies are conducted to evaluate the safety effect of specific changes in intersection geometry and operations. The comparisons utilize the existing Highway Safety Manual (HSM) processes to determine whether ACPI can identify the same trends as those observed in the HSM. The ACPI outperforms time-to-collision-based indicators and tracks the values suggested by the HSM in terms of identifying the relative safety among various scenarios. In field-based analysis, the Spearman’s rank tests indicate that ACPI is able to identify the relative safety among traffic facilities/treatments. Moreover, ACPI-based prediction models are well fitted, suggesting its potential to be directly link to real crash. All efforts indicate that ACPI is a promising surrogate measure of safety for simulation-based studies.
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Barge, Alexis. "Propriétés lagrangiennes de l'accélération turbulente des particules fluides et inertielles dans un écoulement avec un cisaillement homogène : DNS et nouveaux modèles de sous-maille de LES." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSEC012/document.

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Ce travail de thèse porte sur l’étude de l’accélération de particules fluides et inertielles en déplacement dans une turbulence soumise à un gradient de vitesse moyen. L’objectif est de récupérer des données de référence afin de développer des modèles LES stochastiques pour la prédiction de l’accélération de sous-maille et l’accélération de particules inertielles dans des conditions inhomogènes. La modélisation de l’accélération de sous-maille est effectuée à l’aide de l’approche LES-SSAM introduite par Sabel’nikov, Chtab et Gorokhovski[EPJB 80:177]. L’accélération est modélisée à l’aide de deux modèles stochastiques indépendants : un processus log-normal d’Ornstein-Uhlenbeck pour la norme d’accélération et un processus stochastique Ornstein-Uhlenbeck basé sur le calcul de Stratonovich pour les composantes du vecteur d’orientation de l’accélération. L’approche est utilisée pour la simulation de particules fluides et inertielles dans le cas d’une turbulence homogène isotrope et dans un cisaillement homogène. Les résultats montrent une amélioration des statistiques à petites échelles par rapport aux LES classiques. La modélisation de l’accélération des particules inertielles dans le cisaillement homogène est effectuée avec l’approche LES-STRIP introduite par Gorokhovski et Zamansky[PRF 3:034602] et est modélisée avec deux modèles stochastiques indépendants de manière similaire à l’accélération de sous-maille. Nos calculs montrent une amélioration de l’accélération et de la vitesse des particules lorsque le modèle STRIP est utilisé. Enfin dans une dernière partie, nous présentons une équation pour décrire la dynamique de particules ponctuelles de taille supérieure à l’échelle de Kolmogorov dans une turbulence homogène isotrope calculée par DNS. Les résultats sont comparés avec l’expérience et montrent que cette description reproduit bien les propriétés dynamiques des particules
The main objective of this thesis is to study the acceleration of fluid and inertial particles moving in a turbulent flow under the influence of a homogeneous shear in order to develop LES stochastic models that predict subgrid acceleration of the flow and acceleration of inertial particles. Subgrid acceleration modelisation is done in the framework of the LES-SSAM approach which was introduced by Sabel’nikov, Chtab and Gorokhovski[EPJB 80:177]. Acceleration is predicted with two independant stochastic models : a log-normal Ornstein-Uhlenbeck process for the norm of acceleration and an Ornstein-Uhlenbeck process expressed in the sense of Stratonovich calculus for the components of the acceleration orientation vector. The approach is used to simulate fluid and inertial particles moving in a homogeneous isotropic turbulence and in a homogeneous sheared turbulence. Our results show that small scales statistics of particles are better predicted in comparison with classical LES approach. Modelling of inertial particles acceleration is done in the framework of the LES-STRIP which was introduced by Gorokhovski and Zamansky[PRF 3:034602] with two independant stochastic models in a similar way to the subgrid fluid acceleration. Computations of inertial particles in the homogeneous shear flow present good predicitons of the particles acceleration and velocity when STRIP model is used. In the last chapter, we present an equation to describe the dynamic of point-like particles which size is larger than the Kolmogorov scale moving in a homogeneous isotropic turbulence computed by direct numerical simulation. Results are compared with experiments and indicate that this description reproduces well the properties of the particles dynamic
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Adamson, Michael Louis. "An Analysis of Decision Boundaries for Left-Turn Treatments." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/7129.

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The purpose of this project is to evaluate the safety and operational differences between three left-turn treatments: permitted, protected, and protected-permitted left-turn phasing. Permitted phasing allows vehicles to turn left after yielding to any opposing vehicles; protected phasing provides an exclusive phase for vehicles to turn left that does not allow opposing vehicles; and protected-permitted phasing combines the previous phasing alternatives, allowing vehicles to turn after yielding while also providing some green time for protected left-turns.As part of evaluating the differences between these left-turn treatments, crashes before and after the change at intersections that had experienced a permanent change from one phase alternative to another were compared. The crashes that took place at these intersections were compared with the number of crashes experienced at a baseline set of intersections. A general increase in total crashes was observed for most intersections, and an increase in left-turn crashes per million entering vehicles was also observed in intersections that had experienced a change from protected to protected-permitted phasing; no other clear trends were observed.The research team also gathered simulated data using VISSIM traffic modeling software and safety data were extracted from these simulations using the Surrogate Safety Assessment Model (SSAM) created by the Federal Highway Administration to identify decision boundaries between each left-turn treatment. The simulations modeled intersections with 1-, 2-, and 3-opposing-lane configurations with permitted and protected-permitted models (split into green times of 10-, 15-, and 20-seconds) for a total of 12 different simulation models. Each model was divided into 100-225 different volume scenarios, with incremental increases in left-turn vs. opposing volumes. By exporting trajectory files from VISSIM and importing these files into SSAM, crossing conflicts for each volume combination in each model were identified and extracted. These were then entered into MATLAB to create contour maps; the contours of these maps represent the number of crossing conflicts per hour associated with different combinations of left-turn and opposing volume. Basic decision boundaries were observed in the contour maps for each model. To extract an equation to estimate each boundary, JMP Pro statistical analysis software was used to perform a linear regression analysis and develop natural log-based equations estimating the decision boundaries for each configuration and phase alternative. These equations were then charted using Excel and final decision boundaries were developed for the 1-, 2-, and 3-lane configurations between permitted and protected-permitted phasing as well as between protected-permitted and protected phasing.
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Kim, Kyung Min. "Analysis of Safety Impacts of Access Management Alternatives Using the Surrogate Safety Assessment Model." BYU ScholarsArchive, 2017. https://scholarsarchive.byu.edu/etd/6629.

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In a traditional safety impact analysis, it is necessary to have crash data on existing roadway conditions in the field and a few years must pass before accumulating reliable crash data. This is a time-consuming approach and there remains uncertainty in the crash data due to the random nature of crash occurrences. The Surrogate Safety Assessment Model (SSAM) was developed for resolving these issues. With SSAM, a conflict analysis is performed in a simulated environment. A planned improvement alternative under study is modeled and no physical installation of the alternative is needed. Hence, the method using a simulation software along with SSAM consumes less time compared to other traditional safety analysis methods that may require a physical installation of the new alternative and a long wait time for data collection. The purpose of this study is to evaluate if SSAM can be used to assess the safety of a highway segment or an intersection in term of the number and type of conflicts and to compare the safety effects of multiple access management alternatives with less time, less cost and less uncertainty than the traditional safety analysis methods. To meet the purpose of the study, two study sections, one on University Parkway in Orem and Provo and the other on Main Street in American Fork were selected and analyzed in this research. Based on the findings from the calibration of SSAM on the University Parkway study section, an evaluation of the effect of converting a TWLTL median into a raised median on a section of Main Street (US-89) from 300 West to 500 East in American Fork was performed using SSAM working on VISSIM simulation's trajectory files of the study section. This evaluation study was conducted to show how SSAM could be used to evaluate the effect of access management alternatives using surrogate safety measures. The analysis showed that a raised median would be much safer than a TWLTL median for the same level of traffic volume. Approximately a 32 to 50 percent reduction in the number of crossing conflicts was achieved when a raised median was used in lieu of a TWLTL median at the Main Street study section.
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Andrade, Miguel Ângelo Teixeira. "Medidas de apoio à bicicleta em interseções rodoviárias." Master's thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/21950.

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Mestrado em Engenharia Civil
Em Portugal, a bicicleta ainda tem um papel discreto como modo de transporte diário. A falta de infraestrutura dedicada, aliada a uma elevada sinistralidade rodoviária, nomeadamente nas interseções, faz com que este modo não seja preferencial face ao transporte rodoviário. A presente dissertação incide sobre as medidas de apoio à bicicleta que se podem aplicar nos diferentes tipos de interseções rodoviárias. São apresentadas diferentes soluções a implantar, resultantes de um trabalho de pesquisa em documentos oriundos de cinco países onde a bicicleta apresenta um papel relevante como modo de transporte (Holanda, Reino Unido, Irlanda, Estados Unidos da América e Dinamarca). Com objetivo de estudar o impacto de algumas soluções na infraestrutura de apoio ao velocípede, sobretudo em interseções, foi elaborado um caso de estudo localizado na cidade de Aveiro. Para o efeito foi construído um modelo de microssimulação de tráfego utilizando para o efeito o simulador de microssimulação de tráfego VISSIM com o qual se procurou estudar o comportamento de um percurso durante a hora de ponta da manhã. Foi escolhido o trajeto entre a Universidade de Aveiro (UA) e a Estação Ferroviária de Aveiro, tendo-se simulado 4 cenários diferentes (um base e três alternativos). O cenário base representa a infraestrutura existente, o cenário alternativo sem ciclovia pretende simular as condições da não existência de infraestrutura ciclável ao longo do percurso; o cenário com ciclovia pretende representar a existência de uma infraestrutura ciclável (ciclovias/vias cicláveis) e o cenário com ciclovia e ASL (Advanced Stop Line) pretende estudar o efeito de uma caixa de espera dedicada à bicicleta nas interseções semaforizadas. O cenário com ciclovia foi de entre os cenários testados aquele que no trajeto proposto permitiu a obtenção dos menores tempos de percurso. A existência de uma via ciclável permitiu melhorar o nível de serviço (LOS) nas interseções para os veículos ligeiros, pesados e bicicletas. No que diz respeito aos resultados obtidos sobre a análise de conflitos, a presença de vias cicláveis verificou um aumento do número total de conflitos, embora o número de conflitos de atravessamento tenha verificado uma diminuição. A microssimulação realizada e apresentada na dissertação, com intuito de estudar medidas de apoio à bicicleta em interseções rodoviárias, demonstrou que a presença de vias cicláveis e de ciclovias não é prejudicial ao desempenho da rede onde estão inseridas, devendo-se assim alterar o panorama atual dos transportes e apostar mais nos transportes suaves.
The bicycle in Portugal has a discrete role as a daily mode of transportation. The lack of dedicated infrastructure associated with high number of accidents, especially at road intersections, makes this mode not preferential to individual road transport. The present thesis focuses on bicycle support measures that can be applied to different types of road intersections. Different solutions to be implemented are presented, resulting from a research work on documents from five countries where the bicycle has a important role as a means of transport (Netherlands, United Kingdom, Ireland, United States of America and Denmark). In order to carry out a case study in the city of Aveiro, it was necessary to carry out traffic counts (light duty, heavy, bicycles) at intersections in order to carry out a microsimulation of traffic at peak hour in the morning. The route was chosen between the UA and the Railway Station, simulating four different scenarios (base line and three alternative). The baseline scenario represents the existing infrastructure, the alternative scenario without a bicycle path is intended to simulate the conditions of non-existence of cycling infrastructure along the route; The cycling scenario is intended to represent the existence of a cycling infrastructure (cycle paths / cycling routes) and the scenario with cycle path and ASL (Advanced Stop Line) intends to study the effect of a dedicated bicycle waiting box at the traffic lights. The scenario with a bicycle path was one of the scenarios tested, which in the proposed route allowed the lowest travel times to be obtained. The existence of a cycle route has enabled the level of service (LOS) at the intersections (for light duty vehicles, heavy duty vehicles and bicycles) to be improved. Regarding the results obtained on the analysis of conflicts, the presence of cycling routes allowed a reduction in the number of crossing conflicts, although it causes an increase in the total number of conflicts. The microsimulation presented in the dissertation showed that the presence of cycling routes and bicycle paths is not detrimental to the performance of the network where they are inserted, thus changing the current transport perspective and more on active transport mods.
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Wolfe, Sage M. "Integration of CarSim into a Custom Cosimulation Program for Automotive Safety." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313077226.

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Tichonov, Jevgenij. "SSIM metodo taikymas didelių vaizdų analizei." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2013. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130807_115031-16027.

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Darbe nagrinėjamas vienas iš vaizdų kokybės vertinimo metodų (metrikų) – SSIM (struktūrinio panašumo) indekso metodas bei šio metodo naudojimas tiriant didelius vaizdus. Darbo eigoje: • nustatyta kai kurių įgyvendintų SSIM indekso algoritmų problematika, vertinant aukštos raiškos vaizdus; • nustatytos gaunamų skaitinių reikšmių priklausomybės nuo tiriamų vaizdų dydžio; • pagrindžiamas vaizdo duomenų mažinimas SSIM indekso algoritmuose; • pasiūlyti tam tikri sprendimai SSIM indekso algoritmo sudarymui, skirto didelės raiškos vaizdų vertinimui; • palyginti SSIM indekso algoritmų veikimo laikai tarp skirtingų algoritmų; • sukurta programinė įranga, kuri yra pritaikyta Windows operacinei sistemai bei gali būti patogiai įdiegta kompiuteryje. Programoje: – patobulintas SSIM indekso įgyvendinimo algoritmas; – atvaizduojamas SSIM skirtumų žemėlapis; – sukurta patogi vartotojui vizualinė aplinka. Realizuota programinė įranga gali būti naudojama edukaciniais tikslais bei užsakomiesiems apdorotų vaizdų kokybės vertinimo tyrimams.
The paper analyzes one of image quality assessment methods (metrics) – SSIM (structural similarity) index method, and this method in order to analyze the large images. In work process: • problems of some SSIM index algorithms for high-resolution images have been identified; • dependence of image size and SSIM index values has been found; • some solutions for SSIM index algorithm for high-resolution images have been proposed; • the image data down sampling in SSIM index algorithms has justified; • SSIM index algorithm run times between different algorithms has been compared; • Software which is designed for MS Windows operating system and can be easily installed on the computer has been developed. In this software: – SSIM index algorithm is updated; – program Displays the SSIM index map; – User-friendly visual environment is developed. Implemented software can be used for educational purposes and commercial use for analyzing processed image quality assessment.
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Shibata, Takafumi, Masaaki Katayama, and Akira Ogawa. "Performance of Asynchronous Band-Limited DS/SSMA Systems." IEICE, 1993. http://hdl.handle.net/2237/7200.

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Westin, Andreas, and Jenny Ann Sundbro. "SSAB - stålman eller järnankare? : En företagsanalys och aktievärdering." Thesis, Stockholm University, School of Business, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6485.

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I en tid där nästan hela svenska folket är aktieägare har företagsvärdering och därtill relaterad information fått en allt större uppmärksamhet i media. Ett av dessa företag som debatterats och analyserats på senare tid – med helt olika rekommendationer som följd – är Svenskt Stål AB, SSAB, företaget som blev föremålet också för vår värdering. SSAB verkar som stålpro-ducent i en bransch som närmast dagligen diskuterats i media under senare år, framför allt på grund av kraftigt stigande stålpriser och de inverkningar detta har fått på resten av industrin. Syftet med denna uppsats har varit att med hjälp av den diskonterande kassaflödesmodellen uppskatta ett värde på SSAB och jämföra detta med den rådande aktiekursen för att därefter undersöka vad eventuella skillnader kunde bero på. Som grund för vår prognos har strategisk analys använts. Vår förhoppning är att uppsatsen ska vara till nytta för ”amatörvärderaren”, det vill säga någon som tidigare inte är direkt insatt i värdering men som har ett privateko-nomiskt intresse av att lära sig grunderna i företagsvärdering. Studiens resultat gav ett aktievärde för SSAB på 278 SEK vilket ska jämföras med de 137 SEK som aktien handlas för på OMX-börsen. Vår värdering gav med andra ord ett värde som är 103% högre än aktiemarknadens värdering. Med vår analys kunde vi konstatera att detta resultat är känsligt för förändringar i de uppskattade parametrarna och att framför allt kalkylräntan, som approximerades med Weighted Average Cost of Capital, hade stor inver-kan. Dessutom visade analysen att ”ränta på ränta-fenomenet”, det vill säga att ett givet års bidrag till företagsvärdet är beroende av tidigare års bidrag, gav upphov till att en konsekvent optimistisk syn på företagets utveckling kontra en pessimistisk syn gav radikala skillnader i företagsvärde. Ytterligare slutsats som kunde dras är att aktiemarknadens investeringshori-sont är betydligt längre än de fem år som utgjorde studiens prognosperiod, eftersom det så kallade slutvärdet representerade mer än 80% av vårt beräknade företagsvärde. Skillnader i våra bedömningar och aktiemarkandens i ovanstående moment kan därför till stor del ligga bakom de skillnader gentemot aktievärdet som vår värdering gav upphov till. Svårigheter att tolka motstridig information samt att kvantifiera kvalitativa resonemang, speciellt med hjälp av endast en modell, kan också ligga bakom skillnaden i värde.

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Mujnovic, Haris, and Daniel Månsson. "Ën studie angående SSAB och VMI : Ett beslutsunderlag." Thesis, Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-107335.

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SSAB är en svensk stålproducent som grundades år 1978. På senare år har företagets marginaler minskats och koncernen har dragits med förluster, till följd av ökad konkurrens och stigande råvarupriser. SSAB har till följd av detta försökt öka sin konkurrenskraft genom att erbjuda sina kunder värdeadderande tjänster. Som ett led i detta är SSAB intresserade av huruvida VMI kan vara en sådan tjänst. Denna rapports syfte är således att ta fram ett beslutsunderlag för SSAB huruvida förutsättningar för VMI-samarbete mellan SSAB och deras kunder finns, hur detta samarbete bör se ut och vilka kostnadsförändringar som uppstår. Syftet har brutits ned i tre mindre områden. Områdena är huruvida förutsättningar för VMI-samarbete mellan SSAB och deras kunder finns, hur VMI-lösningen bör se ut och vilka kostnadsförändringar som uppstår. För att besvara respektive huvudområde har följande tre huvudfrågeställningar tagits fram: Finns förutsättningarna för VMI-samarbete mellan SSAB och deras kunder? Hur bör SSABs VMI-erbjudande se ut? Hur påverkas kostnadsstrukturen av denna VMI-lösning? Författarna har samlat in empiri genom intervjuer och enkätundersökningar. I empiriinsamlingen har tre kunder studerats som, enligt SSAB, är representativa för övriga direkt- och konsignationslagerkunder. Denna empiri har, tillsammans med litteraturstudier, givit författarna möjlighet att genomföra analyser och beräkningar, som i sin tur har lett till slutsatser som besvarar frågeställningarna. Dessa slutsatser är sammanfattade i tabellen nedan. Frågeställning 1. Finns förutsättningarna för VMI-samarbete mellan SSAB och deras kunder? Slutsats 1: Utifrån de studerade fallen har det i studien framkommit att förutsättningarna för VMI-samarbete existerar. Frågeställning 2: Hur bör SSABs VMI-erbjudande se ut? Slutsats 2: SSAB har ansvar för alla delar utom prognostisering och att lagra in artiklar som anländer till VMI-lagret, som istället kunden har ansvar för. SSABs och kundens affärssystem bör anslutas via EDI och SSAB ska äga produkterna som ligger i lagret. Kunden faktureras när produkterna tas ut och ett Closed End Agreement bör ingå i avtalet. Frågeställning 3: Hur påverkas kostnadsstrukturen av denna VMI-lösning? Slutsats 3: Kostnaderna för framförallt lagerföring kommer att öka i de fall kunderna går över från direkt försäljning till VMI. Studien indikerar även att i de fall kunderna går över från konsignationslager till VMI så minskar lagerföringskostnaderna. Övriga kostnader som påverkas kan försummas i jämförelse med lagerföringskostnaderna.
SSAB is a Swedish producer of steel founded in 1978. In recent years, the company has suffered from reduced margins and been experiencing financial losses. As a result of this, SSAB is trying to increase its competitiveness by offering value added services to its customers. Therefore, SSAB is interested in learning whether VMI is such a service. The purpose of this study is to produce a decision support to SSAB regarding whether the prerequisites for VMI collaboration exist between SSAB and its customers, how this collaboration should be designed and what cost changes will occur. The purpose has been divided into three areas. The areas are whether the prerequisites for VMI collaboration exist between SSAB and its customers, how the VMI collaboration should be designed and what cost changes will occur. Following three main questions have been produced to answer the areas: Do the prerequisites for VMI collaboration exist between SSAB and its customers? How should SSAB’s VMI offer be designed? How does the VMI collaboration affect the costs? The authors have collected empiricist by interviews and surveys. Three customers have been studied in the empirical data collection who, according to SSAB, are representative for other direct and consignment stock customers. The collected data and the literature studies have enabled the authors to analyze and to do calculations, which have led to conclusions that answer the main questions. These conclusions are summarized in the table below. Question 1: Do the prerequisites for VMI collaboration exist between SSAB and its customers? Conclusion 1: The study has concluded that the prerequisites for VMI collaboration exist in the studied cases. Question 2: How should SSAB’s VMI offer be designed? Conclusion 2: SSAB should be responsible for all aspects of the VMI collaboration, except for forecasting and stock-picking in the VMI stock. SSAB’s and the customers’ business systems should be connected by EDI and SSAB should own the products in the VMI stock. The customer is invoiced when the products leave the stock and a Closed End Agreement should be in place. Question 3: How does the VMI collaboration affect the costs? Conclusion 3: The stock holding costs will especially increase when direct customers become VMI customers. Furthermore, the study indicates that the stock holding costs will decrease in cases of consignment stock customers becoming VMI customers. Other costs that are affected by a VMI collaboration can be neglected.
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Books on the topic "SSAM"

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Uri nŭn wae pibyŏ mŏkko ssam ssa mŏkko mara mŏngnŭn'ga. Sŏul-si: Tonga Ilbosa, 2012.

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Chagŭn konggan k'ŭn iyagi: Munhwa maegae konggan Ssam esŏ mannan Pusan ŭi yesulgadŭl. Pusan: Homil Pat, 2011.

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Tchya. Kho vàng Ssam Sơn: Lịch syu ái tình titeu thuyret. Houston, Tex: Xuân Thu, 1985.

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1681-1763, Yi Ik, ed. Yŏmso ka pat ŭl kalgo ssal ŭl simŭmyŏn ssak i nanda. Sŏul-si: Hyean, 2003.

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Trâm, Huy. Ssau xwu tirep ssau mây: Thơ. California: Hương Văn, 2000.

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Park, Linda Sue. Yŏn ssaum. Sŏul: Sŏul Munhwasa, 2003.

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Chin, Hsing-chih. Ly ssau. Houston, Tex: Xuân Thu, 1986.

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Macdonald, Andy. Select SSADM. [Huddersfield?]: [The University?], 1992.

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Yasunari, Kawabata. Tình ssau. Glendale, CA: Đại Nam, 1997.

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Bentley, Colin. SSADM: Using SSADM in a PRINCE environment. Oxford: Butterworth-Heinemann, 1995.

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Book chapters on the topic "SSAM"

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Lim, Yang Kyu, Eun Ju Lee, Joo Young Ha, and Jin Wan Park. "I am Ssam: Learning Benefits of the Korean Wrap Food." In HCI International 2016 – Posters' Extended Abstracts, 513–18. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-40542-1_83.

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Zamansky, Remi, Ivana Vinkovic, and Mikhael Gorokhovski. "LES-SSAM for a high Reynolds number turbulent channel flow." In Quality and Reliability of Large-Eddy Simulations II, 69–78. Dordrecht: Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-94-007-0231-8_6.

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Sabel’nikov, V., A. Chtab, and M. Gorokhovski. "The Coupled LES - Subgrid Stochastic Acceleration Model (LES-SSAM) of a High Reynolds Number Flows." In Springer Proceedings Physics, 209–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-72604-3_66.

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Duncan, Joyce, Lesley Rackley, and Alexandria Walker. "Introduction to Systems Analysis and Design." In SSADM in Practice, 1–14. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-10341-6_1.

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Duncan, Joyce, Lesley Rackley, and Alexandria Walker. "Stage 6: Design of the Physical System." In SSADM in Practice, 104–16. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-10341-6_10.

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Duncan, Joyce, Lesley Rackley, and Alexandria Walker. "SSADM — A Critique." In SSADM in Practice, 117–19. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-10341-6_11.

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Duncan, Joyce, Lesley Rackley, and Alexandria Walker. "Stage 1: Investigation of Current Environment." In SSADM in Practice, 15–29. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-10341-6_2.

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Duncan, Joyce, Lesley Rackley, and Alexandria Walker. "Stage 1: Investigation of Current Environment (Continued)." In SSADM in Practice, 30–39. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-10341-6_3.

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Duncan, Joyce, Lesley Rackley, and Alexandria Walker. "Completion of Stage 1 and Stage 2." In SSADM in Practice, 40–46. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-10341-6_4.

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Duncan, Joyce, Lesley Rackley, and Alexandria Walker. "Stage 3 — Requirements Specification." In SSADM in Practice, 47–60. London: Macmillan Education UK, 1995. http://dx.doi.org/10.1007/978-1-349-10341-6_5.

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Conference papers on the topic "SSAM"

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Bahorich, Michael S., and S. Rutt Bridges. "Seismic Sequence Attribute Map (SSAM)." In SEG Technical Program Expanded Abstracts 1992. Society of Exploration Geophysicists, 1992. http://dx.doi.org/10.1190/1.1822047.

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Bahorich, M. "The seismic sequence attribute map (SSAM)." In 56th EAEG Meeting. European Association of Geoscientists & Engineers, 1994. http://dx.doi.org/10.3997/2214-4609.201409900.

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Zhou, Si'en, Keping Li, Jian Sun, and Pingchao Han. "Calibration and Validation Procedure for Intersection Safety Simulation using SSAM and VISSIM." In Tenth International Conference of Chinese Transportation Professionals (ICCTP). Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41127(382)64.

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Volak, Josef, Zbynek Bunda, and Vaclav Mentl. "Comparison of P92 Steel Fatigue Test Results in Relation to Specimen Size and Manufacturing." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97702.

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This paper describes fatigue properties of steel P92. This material is used as a standard in the energy industry, especially for production of pipes and flange branches and distance pieces of supercritical steam turbines. This material contains (unlike material P91) up to 2% of tungsten which has positive influence on creep strength increase. Compared to the P91 material, it is possible to reduce wall thickness of the P92 pipe up to 20%. Fatigue tests were carried out on standard samples and compared with SFT samples (Small Fatigue Test). SFT samples can be gently withdrawn from energy component by SSam 2 device made by company Rolls Royce. There is no necessity for shutdown of power plant. Thanks to the existing correlations between SFT and Fatigue tests, it is possible to determine mechanical properties of material from a small amount of withdrawn material. At the same time a comparison between a traditional way of sample production and a sample production by means of waterjet cutting was carried out.
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Hannun, Jameel, Jamal Hannun, Khaled Shamiyeh, Mohammad Ghanim, and Mohamed Kharbeche. "Operational Performance and Safety Assessment of Signalized Roundabouts." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0077.

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Roundabouts are widely used to reduce the severity of conflicts at intersecting roads. While they tend to provide an acceptable level of traffic operation, their operational benefits are reduced when traffic demands increase. One possible and economic mitigation is to convert the roundabouts into signalized ones to accommodate the demand increase and to further reduce the conflicts. This conversion will allow the roundabouts to perform both functions (safety and operational) within acceptable levels. Accordingly, proper signal timing parameters are often required to achieve the anticipated safety and operational levels. Unlike the operational performance of signalized intersections that can be easily assessed based on field measurements, safety assessment is far more difficult due to the need of historical crash data, which would potentially take years. This study presents the use of traffic simulation to assess the operational performance as well as the safety performance of signalized intersections. At first, a well-calibrated model of a signalized roundabout located in the city of Doha is built in microscopic traffic simulation environment based on field measurements and observations. Secondly, Surrogate Safety Assessment Method (SSAM) is used to analyze the simulated vehicular trajectories to identify the type and severity of conflicts. The results revealed that the implemented signal timing parameters have a significant impact on the safety functionality of the signalized roundabouts.
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Březina, Martin, Jana Petzová, and Ľudovít Kupča. "Evaluation of Mechanical Properties of Primary Circuit Components Using SPT Technique." In ASME 2013 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/pvp2013-97170.

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The paper deals with the evaluation of mechanical properties of safety-related components of the primary circuit of nuclear power plants (NPPs). During a long-term operation of NPPs, changes of mechanical properties occur. To ensure the safe operation of NPP it is necessary to monitor and evaluate these changes. One possibility how to solve this problem is a direct sampling and the assessment of the actual mechanical properties using the small punch test (SPT) technique. By the SPT technique it is possible to evaluate the basic tensile properties such as the ultimate tensile strength and the yield stress of the tested materials as well as the transition temperature. The authors describe model examples of surface sampling using the special Rolls Royce equipment SSam™-2. The SPT specimens were prepared from the removed samples by application of the wire electrical discharge machining and fine grinding. The prepared specimens were tested and the obtained data were evaluated. Original pieces of primary tubes with diameter 500 mm made of stainless steel type 08Ch18N10T (AISI 321) were used for these model examples. Another experimental material used was a block of the reactor pressure vessel wall cut from NPP Greifswald Unit 7 which contains a weld joint. Those experiments were a part of the preparatory activities for the planned sampling and the assessment of the actual mechanical properties of primary components such as the main primary coolant piping, the steam generator shell and the reactor pressure vessel.
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Ma, Dianfu, Min Liu, Yongwang Zhao, and Chunyang Hu. "SSCM." In the 2008 ACM symposium. New York, New York, USA: ACM Press, 2008. http://dx.doi.org/10.1145/1363686.1364216.

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Lu, Jing, Ke Bai, and Aviral Shrivastava. "SSDM." In the 50th Annual Design Automation Conference. New York, New York, USA: ACM Press, 2013. http://dx.doi.org/10.1145/2463209.2488918.

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Lee, Nian-Ze, Yen-Shi Wang, and Jie-Hong R. Jiang. "Solving Stochastic Boolean Satisfiability under Random-Exist Quantification." In Twenty-Sixth International Joint Conference on Artificial Intelligence. California: International Joint Conferences on Artificial Intelligence Organization, 2017. http://dx.doi.org/10.24963/ijcai.2017/96.

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Stochastic Boolean Satisfiability (SSAT) is a powerful formalism to represent computational problems with uncertainly, such as belief network inference and propositional probabilistic planning. Solving SSAT formulas lies in the same complexity class (PSPACE-complete) as solving Quantified Boolean Formula (QBF). While many endeavors have been made to enhance QBF solving, SSAT has drawn relatively less attention in recent years. This paper focuses on random-exist quantified SSAT formulas, and proposes an algorithm combining binary decision diagram (BDD), logic synthesis, and modern SAT techniques to improve computational efficiency. Unlike prior exact SSAT algorithms, the proposed method can be easily modified to solve approximate SSAT by deriving upper and lower bounds of satisfying probability. Experimental results show that our method outperforms the state-of-the-art algorithm on random k-CNF formulas and has effective application to approximate SSAT on circuit benchmarks.
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Rahayu, Fitri N., Ulrich Reiter, Touradj Ebrahimi, Andrew Perkis, and Peter Svensson. "SS-SSIM and MS-SSIM for digital cinema applications." In IS&T/SPIE Electronic Imaging, edited by Bernice E. Rogowitz and Thrasyvoulos N. Pappas. SPIE, 2009. http://dx.doi.org/10.1117/12.805805.

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Reports on the topic "SSAM"

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Carrier, M., R. Masti, and B. Srinivasan. NNSA SSAP Article VT 101320. Office of Scientific and Technical Information (OSTI), October 2020. http://dx.doi.org/10.2172/1678852.

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Ketseoglou, Thomas, and Evaggelos Geraniotis. Multireception Probabilities for FH/SSMA Communications. Fort Belvoir, VA: Defense Technical Information Center, January 1989. http://dx.doi.org/10.21236/ada454840.

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Burke, J., J. Escher, N. Schunck, and N. Scielzo. SSAA Collaborations in Nuclear Science at LLNL. Office of Scientific and Technical Information (OSTI), October 2012. http://dx.doi.org/10.2172/1055854.

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Touzi, R., and F. Charbonneau. The SSCM for Ship Characterization Using Polarimetric SAR. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2003. http://dx.doi.org/10.4095/220010.

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Johnson, Ralph. Stochastic Simulation Analysis - 2005 (SSA-05). Fort Belvoir, VA: Defense Technical Information Center, July 1997. http://dx.doi.org/10.21236/ada329429.

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SCHAFER CORP ARLINGTON VA. Support for NAWC-China Lake SSGM Cloud Generation Utility. Fort Belvoir, VA: Defense Technical Information Center, February 1999. http://dx.doi.org/10.21236/ada361753.

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Erlandson, A., and D. Larson. Explosion fraction measurements and SSA experiments at LLE. [Single-Segmented Amplifier (SSA), Laboratory for Laser Energetics (LLE)]. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/5857283.

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Bhattacharyya, S., ed. An Overview of Source-Specific Multicast (SSM). RFC Editor, July 2003. http://dx.doi.org/10.17487/rfc3569.

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Haßler, Björn, and Gesine Haseloff. TVET research in SSA: Recommendations for Thematic Priorities. Undefined, January 2021. http://dx.doi.org/10.53832/opendeved.0200.

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Wilson, David G., and Marvin A. Cook. Smart Grid R&D SSM KIER FY17 Report. Office of Scientific and Technical Information (OSTI), December 2017. http://dx.doi.org/10.2172/1413416.

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