scholarly journals Extension of HLOD Technique for Dynamic Scenes with Deterministic Events

2019 ◽  
Author(s):  
Виталий Семёнов ◽  
Vitaliy Semenov ◽  
Василий Шуткин ◽  
Vasiliy Shutkin ◽  
Владислав Золотов ◽  
...  
Keyword(s):  
Computer Graphics ◽  
Specific Class ◽  
Dynamic Scenes ◽  
Levels Of Detail ◽  
Hierarchical Levels ◽  
The Common ◽  
Large Groups ◽  
Different Levels

Rendering of large 3D scenes with a convincing level of realism is a challenging computer graphics problem. One of the common approaches to solving this problem is to use different levels of details (LOD) for scene objects, depending on their distance from the observer. Using hierarchical levels of detail (HLOD), when levels of details are created not for each object individually, but for large groups of objects at once, is more effective for large scenes. However, this method faces great challenges when changes occur in the scene. This paper discusses a specific class of scenes with a deterministic nature of events and introduces a method for effective rendering of such scenes based on usage of so-called hierarchical dynamic levels of details (HDLOD). Algorithms for generating HDLOD and their use for visualization of the scenes are also described.

scholarly journals The constructs of site layout modeling: an overview

2015 ◽  
Vol 42 (3) ◽  
pp. 199-212 ◽  
Author(s):  
Farnaz Sadeghpour ◽  
Mohsen Andayesh
Keyword(s):  
Construction Sites ◽  
Layout Planning ◽  
Holistic View ◽  
Advantages And Disadvantages ◽  
Levels Of Detail ◽  
Site Layout ◽  
Planning Models ◽  
Efficient Planning ◽  
The Common ◽  
Different Levels

The efficient planning of site space through the course of a construction project is referred to as site layout planning. Due to its impact on safety, productivity and security on construction sites, several site layout planning models have been developed in the past decades. These models have the common aim of generating best layouts considering the defined constraints and conditions. However, the underlying assumptions that were made during the development of these models seem disparate and often implicit. This study provides an overview of the existing models and aims to draw a holistic view of variables that have been considered at different levels of detail and using different approaches in the site layout literature. Through close examination and comparative analysis of existing models, this study identifies the components that need to be considered for site layout modeling, referred to as constructs. Possible approaches that can be used to realize each construct are presented, and the advantages and disadvantages of these approaches are discussed. It is hoped that this study contributes to a better understanding of site layout modeling, and provide an outline for the development of new site layout planning models.

Development of a Simulation-Based Process Chain – Strategy for Different Levels of Detail for the Preprocessing Definitions

2011 ◽  
Vol 21 (3-4) ◽  
pp. 135-140 ◽  
Author(s):  
Toni A. Krol ◽  
Sebastian Westhäuser ◽  
M. F. Zäh ◽  
Johannes Schilp ◽  
G. Groth
Keyword(s):  
Process Chain ◽  
Levels Of Detail ◽  
Simulation Based ◽  
Different Levels

unrechtliche peinliche schmehung oder dem gemeinen nutz nuetzlich?Eine Fallstudie zur Normenkonkurrenz im Schmähschriftprozess des 16. Jahrhunderts

2020 ◽  
Vol 25 (1) ◽  
pp. 135-149
Author(s):  
Jan Siegemund
Keyword(s):  
Early Modern ◽  
Common Good ◽  
Public Places ◽  
Legal Norms ◽  
The Public ◽  
The Common ◽  
The Public Sphere ◽  
The City ◽  
Different Levels

AbstractLibel played an important and extraordinary role in early modern conflict culture. The article discusses their functions and the way they were assessed in court. The case study illustrates argumentative spaces and different levels of normative references in libel trials in 16th century electoral Saxony. In 1569, Andreas Langener – in consequence of a long stagnating private conflict – posted several libels against the nobleman Tham Pflugk in different public places in the city of Dresden. Consequently, he was arrested and charged with ‘libelling’. Depending on the reference to conflicting social and legal norms, he had therefore been either threatened with corporal punishment including his execution, or rewarded with laudations. In this case, the act of libelling could be seen as slander, but also as a service to the community, which Langener had informed about potentially harmful transgression of norms. While the common good was the highest maxim, different and sometimes conflicting legally protected interests had to be discussed. The situational decision depended on whether the articulated charges where true and relevant for the public, on the invective language, and especially on the quality and size of the public sphere reached by the libel.

DESIGN ACTIVITY MODELING IN DISTRIBUTED KNOWLEDGE RESOURCES ENVIRONMENT

2011 ◽  
Vol 10 (01) ◽  
pp. 69-76 ◽  
Author(s):  
XUDONG DAI ◽  
XUEFEN MA ◽  
YOUBAI XIE
Keyword(s):  
Integrated Design ◽  
Knowledge Flow ◽  
Design Activity ◽  
Distributed Resources ◽  
Value Analysis ◽  
Knowledge Resources ◽  
Design Activities ◽  
Design Requirements ◽  
The Common ◽  
Different Levels

For the definition of knowledge flow, knowledge-flow control and knowledge-acquisition in integrated product design within distributed knowledge resources environment, this paper studies the structural modeling of design activity for integrated product design. The common features of integrated design in distributed resources environment are summarized as follows: centering on specific design requirements, organizing related design resources to perform design activities, outputting design results, carrying on value analysis of design results, and then making design decisions on the basis of value analysis. Based on the common features, a structural model of integrated design activities in distributed resources environment is built, which presents the structural expression of knowledge flow by defining the design requirements, the design resource input, the result output, the design activities, the relationship between the design activities, and the values of the design activities. Design activities at different levels are defined according to the design process models at different levels. A design activity that has been defined can be packaged into design components. The essence of integrated design lies in knowledge integration, which is to be realized by defining the input and output relationship between the design components and the knowledge components.

scholarly journals Influence of saprophages (Isopoda, Diplopoda) on leaf litter decomposition under different levels of humidification and chemical loading

2020 ◽  
Vol 28 (4) ◽  
pp. 384-389
Author(s):  
A. P. Pokhylenko ◽  
O. O. Didur ◽  
Y. L. Kulbachko ◽  
L. P. Bandura ◽  
S. A. Chernykh
Keyword(s):  
Leaf Litter ◽  
Litter Decomposition ◽  
Zinc Content ◽  
Leaf Litter Decomposition ◽  
Absolute Difference ◽  
Average Weight ◽  
Chemical Stress ◽  
Experimental Conditions ◽  
The Common ◽  
Different Levels

The paper presents a study about the influence of two saprophage groups (Isopoda, Diplopoda) on leaf litter decomposition under different levels of humidification and chemical stress. Because of their worldwide distribution, we focused on the common pillbug Armadillidium vulgare (Latreille, 1804) (Isopoda, Armadillidiidae), and the common millipede species Rossiulus kessleri (Lohmander, 1927) (Julida, Julidae). The function of environment creation by the given saprophages, as destructors of dead plant matter, supporting such ecosystem services as soil fertility improvement and nutrients’ turnover, is highlighted. To conduct the experiment, the animals were collected manually and using pitfall trapping. In order to bring the experimental conditions closer to the natural, the individuals were not sexed. The maximum consumption of leaf litter by woodlice was recorded in the conditions with adequate moisture (0.5 mL of distilled water per box) and amounted to 2.52 mg/10 individuals per day, which exceeds its consumption with low and increased moisture, respectively, by 1.82 and 1.24 times. As for the effect of interaction, the consumption of maple litter with optimal moisture (4.77 mg/10 individuals per day) was the greatest. The largest absolute difference between broad-leaved tree species in the average weight of leaf litter consumed by woodlice was between maple leaf litter and oak leaf litter, the minimum – between robinia leaf litter and oak leaf litter. According to the results of the obtained data (Diplopoda), it can be stated that there is a statistically significant effect of chemical stress and discrepancy of the average zinc content in the object of study (in Diplopoda and their faecal pellets). We found that the diet provided did not affect the distribution of zinc in Diplopoda under conditions of chemical stress. According to the results of pairwise comparisons, we determined that the zinc content in the Diplopoda clearly differs for control and almost every concentration of zinc sulfate solution – 0.03 and 0.15 g/L, the samples of which do not form a homogeneous group. The species composition, abundance and distribution in space of soil invertebrates are informative indicators which reflect the ecological state of soils, intensity in development of soil horizons as well as intensity of processes occurring in them.

scholarly journals SHORT COMMUNICATION: THE EFFECT OF TANNIN SOLUTION IN PERFORMING SUCCESFULL EGG MICROINJECTION ON AFRICAN CATFISH (Clarias gariepinus)

2009 ◽  
Vol 4 (2) ◽  
pp. 153
Author(s):  
Muhammad Hunaina Fariduddin Ath-thar ◽  
Komar Sumantadinata ◽  
Alimuddin Alimuddin
Keyword(s):  
Short Communication ◽  
Clarias Gariepinus ◽  
Standard Operating Procedure ◽  
African Catfish ◽  
Hatching Rate ◽  
The Common ◽  
Transgenic Embryos ◽  
The Individual ◽  
Breeding And Genetics ◽  
Different Levels

In order to successfully perform a gene transfer activity using microinjection, an individual egg is needed. The common standard operating procedure to collect the individual egg is by applying chemical solution to remove the sticky layer covering the egg surface. Among several available solutions, tannin is one of alternative substances that can be used in performing egg microinjection on African catfish. In this study, the effect of different dosages of tannin solution to remove the sticky layer of eggs was observed. The study was conducted at the Laboratory of Fish Breeding and Genetics, Bogor Agricultural University. Prior to microinjection, the eggs were treated with different dosages of tannin solution right after fertilization. There were four different levels of dosage used as the treatments i.e.: 0.3, 0.5, 0.7, and 0.9 ppm. After the treatments, each individual egg was injected using DNA pmâactin-hrGFP plasmid with a concentration of 20 μg/mL. The results showed that the dosage of 0.5 ppm of tannin was the most effective treatment compared to the other dosages. This dosage produced 71.4% hatching rate and 57.1% transgenic embryos respectively.

Architecture for Symbolic Object Warehouse

2009 ◽  
pp. 648-657
Author(s):  
Sandra Elizabeth González Císaro ◽  
Héctor Oscar Nigro
Keyword(s):  
Decision Making ◽  
Data Warehouse ◽  
Complex Data ◽  
Data Complexity ◽  
Intrinsic Structure ◽  
Levels Of Detail ◽  
Decision Making Processes ◽  
Design Systems ◽  
Central Database ◽  
Different Levels

Much information stored in current databases is not always present at necessary different levels of detail or granularity for Decision-Making Processes (DMP). Some organizations have implemented the use of central database - Data Warehouse (DW) - where information performs analysis tasks. This fact depends on the Information Systems (IS) maturity, the type of informational requirements or necessities the organizational structure and business own characteristic. A further important point is the intrinsic structure of complex data; nowadays it is very common to work with complex data, due to syntactic or semantic aspects and the processing type (Darmont et al., 2006). Therefore, we must design systems, which can to maintain data complexity to improve the DMP.

Kinetics Study of the Acidic Catalyzed Polymerization of Tetraethoxysilane by 29Si NMR.

1988 ◽  
Vol 121 ◽  
Author(s):  
Jean-Claude Pouxviel ◽  
J. P. Boilot
Keyword(s):  
Significant Contribution ◽  
Hydrolysis Rate ◽  
Hydroxyl Groups ◽  
29Si Nmr ◽  
Condensation Reactions ◽  
Levels Of Detail ◽  
Degree Of Condensation ◽  
By Products ◽  
Different Levels

ABSTRACTTEOS has been hydrolysed under acidic condition with stoichiome-tric or excess amount of water. Evolution of the silicon species is followed by 29Si NMR. The data are analyzed at different levels of detail; first, analysis of the by products of polymerization reactions, second determination of the extents and overall rate constants of hydrolysis and condensation reactions and finally kinetics simulations of the evolution taking into account all the present silicon species. We have shown that the hydrolysis rate increases with the number of hydroxyl groups, and the reesterification reactions have a significant contribution. We also found that condensation reactions preferentially occur with loss of water between the more hydrolyzed monomers; their rates rapidly decrease with the degree of condensation. We compare the two compositions as a function of their water content and pH.

Approaches to the Numerical Estimates of Grid Convergence of NSE in the Presence of Singularities

2018 ◽  
Vol 19 (3-4) ◽  
pp. 281-287
Author(s):  
Chenguang Zhang ◽  
Krishnaswamy Nandakumar
Keyword(s):  
Numerical Algorithms ◽  
Nonlinear Problems ◽  
Order Of Accuracy ◽  
One Dimensional ◽  
Accuracy Order ◽  
Uniform Grids ◽  
Grid Convergence ◽  
The Common ◽  
Spatial Grid ◽  
Different Levels

AbstractEvaluating the order of accuracy (order) is an integral part of the development and application of numerical algorithms. Apart from theoretical functional analysis to place bounds on error estimates, numerical experiments are often essential for nonlinear problems to validate the estimates in a reliable answer. The common workflow is to apply the algorithm using successively finer temporal/spatial grid resolutions ${\delta _i}$, measure the error ${\isin _i}$ in each solution against the exact solution, the order is then obtained as the slope of the line that fits $(\log {\isin _i}, \log {\delta _i})$. We show that if the problem has singularities like divergence to infinity or discontinuous jump, this common workflow underestimates the order if solution at regions around the singularity is used. Several numerical examples with different levels of complexity are explored. A simple one-dimensional theoretical model shows it is impossible to numerically evaluate the order close to singularity on uniform grids.

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