Thematische Bibliographien / Rocky DEM

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Auswahl der wissenschaftlichen Literatur zum Thema „Rocky DEM“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 19. Februar 2023

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Zeitschriftenartikel zum Thema "Rocky DEM"

Zhu, Wei, Liang Gao, Yingai Zhao, Chao Yang, Wei Sun und Pengqiang Yu. „Stability Analysis of Jointed Rock Cutting Slope Based on Discrete Element Method“. Advances in Civil Engineering 2022 (16.07.2022): 1–10. http://dx.doi.org/10.1155/2022/4915820.

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The joints in the rock mass are essential for the stability of rocky slopes, and the destabilization damage of the slope is often directly related to the joints. In this study, in order to reveal the instability process and mechanism of rock slopes from a microscale perspective, the DEM simulations for rocky slopes of the K88 + 400∼K88 + 540 section of Zhongkai Expressway are carried out considering the influence of joints. Based on the findings of the on-site jointed structural surfaces, a rocky slope model containing two sets of intermittent joints was constructed, and the linear parallel bond model and the smooth joint model are used to characterize the rock body and joints, respectively. The evolution of microfracture, contact force chain, and particle displacement are analyzed to explore the micromechanism of slope instability. Finally, the triple reinforcement scheme of anchor cable frame and grass planting is proposed. The research results can provide a reference for stability analysis and reinforcement of similar rocky slope projects.

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Shevchuk, Ruslan, Volodymyr Filipovych, Anton Mychak und Mykola Lybskyi. „Satellite monitoring features of crystalline rocks mining territories within Zhitomyr region based on optical and radar remote sensing data“. Ukrainian journal of remote sensing, Nr. 22 (01.10.2019): 12–21. http://dx.doi.org/10.36023/ujrs.2019.22.157.

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Opportunities of optical and radar satellite data application for ecological state and reclamation quality assessment of disturbed by crystalline rocks open cast mining lands are considered in the article. Digital elevation models analysis is proposed for the problem of identification of mines among rock dumps and rocky outcrops solution. Radar interferograms were used as source data for DEM creating. The research was performed on three study sites within Korostishiv, Cherniahiv and Khoroshiv districts of Zhitomir region. As result of the study an abandoned quarry with no reclamation done and an illegal stone processing waste dump were found. It is stated that environmental impact of crystalline rock open cast mining not as serious as ilmenite or amber open cast mining impacts and facts of violation of law caused by mining activities were not found.

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Laptev, V. V. „Numerical modelling of fragmented mined rock flow during ore drawing using the ROCKY DEM programme“. Vestnik MGTU 22, Nr. 1 (März 2019): 149–57. http://dx.doi.org/10.21443/1560-9278-2019-22-1-149-157.

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Liu, J., G. Q. Zhou, B. Jia, T. Yue und X. Y. Peng. „KARST ROCKY DESERTIFICATION ANALYSIS BASED ON HISTORICAL DISP DATA TAKE TWO REGIONS FOR EXAMPLE“. ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3/W10 (08.02.2020): 871–74. http://dx.doi.org/10.5194/isprs-archives-xlii-3-w10-871-2020.

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Abstract. Karst rocky desertification (KRD) is used to characterize the processes that transform a karst area covered by vegetation and soil into a rocky landscape almost devoid of soil and vegetation. This situation seriously affects and threatens the living environment and standards of local people, which results in a series of social problems. In view of the importance and harmfulness of KRD, many scholars have studied the spatial and temporal evolution of KRD and its driving forces. In this paper, the Visual Interpretation Marks of Rocky Desertification in Southwest China in 1960s are constructed by using the DISP image of the United States, combined with DEM data and Hydrogeological data. The area of rocky desertification in Guangnan and Funing counties, where rocky desertification is more serious, is about 2457.729 km2. The area of rocky desertification can be used as the basic data for studying the historical changes in southwestern China by researchers.

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Lvov, Vladislav, und Leonid Chitalov. „Semi-Autogenous Wet Grinding Modeling with CFD-DEM“. Minerals 11, Nr. 5 (01.05.2021): 485. http://dx.doi.org/10.3390/min11050485.

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The paper highlights the features of constructing a model of a wet semi-autogenous grinding mill based on the discrete element method and computational fluid dynamics. The model was built using Rocky DEM (v. 4.4.2, ESSS, Brazil) and Ansys Fluent (v. 2020 R2, Ansys, Inc., United States) software. A list of assumptions and boundary conditions necessary for modeling the process of wet semi-autogenous grinding by the finite element method is presented. The created model makes it possible to determine the energy-coarseness ratios of the semi-autogenous grinding (SAG) process under given conditions. To create the model in Rocky DEM the following models were used: The Linear Spring Rolling Limit rolling model, the Hysteretic Linear Spring model of the normal interaction forces and the Linear Spring Coulomb Limit for tangential forces. When constructing multiphase in Ansys Fluent, the Euler model was used with the primary phase in the form of a pulp with a given viscosity and density, and secondary phases in the form of air, crushing bodies and ore particles. The resistance of the solid phase to air and water was described by the Schiller–Naumann model, and viscosity by the realizable k-epsilon model with a dispersed multiphase turbulence model. The results of the work methods for material interaction coefficients determination were developed. A method for calculating the efficiency of the semi-autogenous grinding process based on the results of numerical simulation by the discrete element method is proposed.

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Yao, M., G. Zhou, W. Wang, Z. Wu, Y. Huang und X. Huang. „STUDY ON KARST INFORMATION IDENTIFICATION OF QIANDONGNAN PREFECTURE BASED ON RS AND GIS TECHNOLOGY“. ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3 (30.04.2018): 2121–25. http://dx.doi.org/10.5194/isprs-archives-xlii-3-2121-2018.

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Karst area is a pure natural resource base, at the same time, due to the special geological environment; there are droughts and floods alternating with frequent karst collapse, rocky desertification and other resource and environment problems, which seriously restrict the sustainable economic and social development in karst areas. Therefore, this paper identifies and studies the karst, and clarifies the distribution of karst. Provide basic data for the rational development of resources in the karst region and the governance of desertification. Due to the uniqueness of the karst landscape, it can’t be directly recognized and extracted by computer in remote sensing images. Therefore, this paper uses the idea of “RS&thinsp;+&thinsp;DEM” to solve the above problems. this article is based on Landsat-5 TM imagery in 2010 and DEM data, proposes the methods to identify karst information research what is use of slope vector diagram, vegetation distribution map, distribution map of karst rocky desertification and other auxiliary data in combination with the signs for human-computer interaction interpretation, identification and extraction of peak forest, peaks cluster and isolated peaks, and further extraction of karst depression. Experiments show that this method achieves the “RS&thinsp;+&thinsp;DEM” mode through the reasonable combination of remote sensing images and DEM data. It not only effectively extracts karst areas covered with vegetation, but also quickly and accurately locks down the karst area and greatly improves the efficiency and precision of visual interpretation. The accurate interpretation rate of karst information in study area in this paper is 86.73&thinsp;%.

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Lee, Hoseung, Jihyun Moon und Hoonyol Lee. „Activity of Okgye Limestone Mine in South Korea Observed by InSAR Coherence and PSInSAR Techniques“. Remote Sensing 14, Nr. 24 (10.12.2022): 6261. http://dx.doi.org/10.3390/rs14246261.

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The Okgye limestone mine, which is the largest open-pit limestone mine located in a mountainous area in Korea, suffered a collapse in 2012 that claimed four casualties. Restoration work on the rocky mined-out slopes, as well as mining and dumping activities, are still in progress. Monitoring slope stability is important to prevent the sudden collapse of slopes, which can be efficiently performed by satellite-based interferometric synthetic aperture radar (InSAR) techniques. Firstly, we obtained elevation changes using InSAR-generated Copernicus 30 m DEM in 2014 and an SRTM 1Sec DEM in 2000, through which the area was roughly classified into the mining area, tailings storage area, and the mined-out area. A time series of 12-day coherence images produced by Sentinel-1B SAR were averaged annually to produce an RGB-composite image to observe the change in mining activities during 2018, 2019, and 2020. We found many persistent scatterers (PS) when observing the ground displacement, both in the ascending and descending orbits, from which we decomposed this into the vertical and east components. The largest displacement of 63.6 mm/year was observed during 2019 and 2020 in the tailings storage area in the direction of the dumping slope. For the rocky outcrops and the transmission tower, we found a seasonal oscillation, which can be interpreted as the thermal expansion of limestone and iron. This paper demonstrated that the surface stability and deformation of open-pit mines could be effectively monitored by combining InSAR DEM, coherence, and PSInSAR techniques.

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Piacentini, Daniela, Francesco Troiani, Davide Torre und Marco Menichetti. „Land-Surface Quantitative Analysis to Investigate the Spatial Distribution of Gravitational Landforms along Rocky Coasts“. Remote Sensing 13, Nr. 24 (09.12.2021): 5012. http://dx.doi.org/10.3390/rs13245012.

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The increasing availability of high-quality digital elevation models (DEMs) has been associated with a growing interest in developing quantitative analyses aimed at taking advantage of these detailed, updated, and promising digital datasets. Land-surface quantitative (LSQ) analysis is valuable for describing the land-surface topography and performing measures of the signature of specific geomorphic processes, taking into account site-specific geological contexts and morphoclimatic settings, proving to be particularly effective in transitional environments, such as rocky coasts. This paper presents the results of research aimed at investigating the spatial distribution of gravitational landforms along rocky coasts, by means of LSQ analysis based on a DEM with a ground resolution of 2 m, derived from airborne LiDAR (light detection and ranging) surveys. The study area is at Mt. San Bartolo (Northern Marche, Italy) and characterized by a sea cliff diffusely affected by gravitational phenomena of different sizes and types. Geomorphological and geological field data, interpretations of remotely sensed datasets derived from ad hoc unmanned aerial vehicle (UAV) flights, and DEM-derived hillshades were also adapted to support LSQ analysis. In detail, four morphometric variables (slope, roughness, terrain ruggedness index, and elevation standard deviation) were computed and the outputs evaluated based on visual–spatial inspections of derived raster datasets, descriptive statistics, and joint comparison. Results reveal the best performing variables and how combined interpretations can support the identification and mapping of zones characterized by varying spatial distribution of gravitational landforms of different types. The findings achieved along the Mt. San Bartolo rocky coast confirm that an approach based on land-surface quantitative analysis can act as a proxy to efficiently investigate gravitational slope processes in coastal areas, especially those that are difficult to reach with traditional field surveys.

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Imaichi, Kenta, Lawrence K. Nordell, Brandt Porter und Alexander Potapov. „Development and Performance Variation of Energy Saving Type Comminution Machine Using General Purpose DEM Simulation Soft “ROCKY”“. Journal of the Society of Powder Technology, Japan 54, Nr. 10 (2017): 666–72. http://dx.doi.org/10.4164/sptj.54.666.

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Chakraborty, M., S. Panigrahy und S. Kundu. „Semi-automated Technique to Extract Boundary of Valley/mountain Glaciers using Glacio-morphological Information from Digital Elevation Model“. ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-8 (28.11.2014): 511–16. http://dx.doi.org/10.5194/isprsarchives-xl-8-511-2014.

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A semi automated technique has been developed to extract the spatial extension of valleys and mountain glaciers. The method is based on morphological properties of glaciated area extracted from Digital Elevation Model (DEM). Identification of glacial boundary based on spectral information from optical remote sensing imageries produces errors due to misclassification of debris-covered ablation area with surrounding rocky terrain and perennially snow-covered slope with debris free glaciated area. Elevation information DEM of Shuttle Radar Topography Mission (SRTM), CartoDEM and ASTER DEM have been used. A part of western Himalayas was selected as the study area that contains large glaciated basins, e.g., Bhagirathi, Baspa, Chandra basin. First order derivatives, slope aspect, and second order derivatives like, profile and plan curvatures are computed from the DEM. The derivatives are used to quantify and characterise the morphological aspects of the glaciated area and used in the decision rule models to generate the glacial boundaries. The ridge lines of the study areas are also generated from the plan curvature and used in the model to delineate the catchments areas of the glaciers. The slope based boundary is checked for consistency with the boundary from profile curvature and combined manually to generate the final glacier boundary. Area and length under the derived boundary of Gangotri glacier of Bhagirathi catchments are 90.25 sq km and 30.5 km. The result has been checked with high resolution optical data. This objective approach is important to delineate glaciated area, measure the length, width and area and generate glacial hypsometry, concentration factor of the glaciers. Accuracy of the result depends up on the quality of the DEM. DEM generated by SAR interferometric technique is found superior over DEM generated from other interpolation techniques.

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Dissertationen zum Thema "Rocky DEM"

Smith, Emily Katherine. „Modeling Blister Rust Incidence in Whitebark Pine at Northern Rocky Mountain Alpine Treelines: A Geospatial Approach“. Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/33040.

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The status of whitebark pine (Pinus albicaulis), a foundation and keystone species and a pioneer establisher at alpine treeline, is threatened by the invasive and exotic fungal pathogen (Cronartium ribicola) that causes white pine blister rust in five-needled pines. Originally thought to be limited to moderate environments, the disease is now found extensively throughout colder and dryer regions east of the Continental Divide, including alpine treeline. My research objective was to determine how blister rust infection of treeline whitebark pine varies across Glacier National Park. I present findings from field sampling conducted in July 2008 in Glacier National Park, Montana. Thirty plots were randomly placed at 6 different treeline study sites on the eastern slopes of the Continental Divide. Vegetative and geomorphic characteristics, along with presence/absence and level of blister rust intensity, were detailed within each plot. Vegetation measurements included conifer composition, tree island dimensions and windward growth patterns, evidence and intensity of blister rust, as well as shelter type. Field-measured topographic characteristics included elevation, aspect, and slope. In addition, high resolution GPS-derived DEMs were created at each plot in order to model the land surface and calculate detailed environmental variables in a GIS. Environmental and blister rust intensity variables were used to determine spatial correlates of blister rust infection at treeline. The resulting blister rust prediction model (P < 0.001, F(4,25) = 6.79, R2 = 0.52, Adjusted R2 = 0.44) suggests that areas exhibiting increased wind speed, northwest facing slopes, high flow accumulation rates, and close proximity to perennial streams have a higher likelihood of blister rust intensity, specifically total canker density. Results of this research may contribute to the understanding of the dynamics of this disease, and prove useful in whitebark ecosystem management and conservation.
Master of Science

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Smith-McKenna, Emily Katherine. „Geospatial Variation of an Invasive Forest Disease and the Effects on Treeline Dynamics in the Rocky Mountains“. Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/24200.

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Whitebark pine is an important keystone and foundation species in western North American mountain ranges, and facilitates tree island development in Rocky Mountain treelines. The manifestation of white pine blister rust in the cold and dry treelines of the Rockies, and the subsequent infection and mortality of whitebark pines raises questions as to how these extreme environments harbor the invasive disease, and what the consequences may be for treeline dynamics. This dissertation research comprises three studies that investigate abiotic factors influential for blister rust infection in treeline whitebark pines, how disease coupled with changing climate may affect whitebark pine treeline dynamics, and the connection between treeline spatial patterns and disease. The first study examined the spatial variation of blister rust infection in two whitebark pine treeline communities, and potential topographic correlates. Using geospatial and field approaches to generate high resolution terrain models of treeline landscapes, microtopography associated with solar radiation and moisture were found most influential to blister rust infection in treeline whitebark pines. Using field-based observations from sampled treeline communities, the second study developed an agent-based model to examine the effects of disease and climate on treeline pattern and process. Treeline dynamics were simulated under five hypothetical scenarios to assess changes in tree spatial patterns and populations. Blister rust-induced loss of whitebark pines resulted in a decline of facilitative processes, and an overall negative treeline response to disease—despite the beneficial effects of climate amelioration. The objective of the third study was to explore whether spatial patterns of tree proximity, size, and growth infer disease patterns. Comparing spatial patterns of tree characteristics between diseased and undiseased treeline communities, I found that trees growing near trees with larger stem diameters, and larger tree islands, tended to have more blister rust cankers, and displayed clustered spatial patterns. Undiseased treeline patterns revealed near neighbors smaller in stem diameter and tree island size, and were randomly dispersed. Blister rust diseased whitebark pines reveal spatial autocorrelation, despite the complex blister rust disease life cycle. Overall, findings from this dissertation reveal the implications of invasive disease on sensitive treeline ecotones dependent on a keystone species.
Ph. D.

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Busta, Michal. „Analýza namáhání vybraných konstrukčních částí bagru při provozu“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443770.

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This thesis is focused on the issue of computational modeling of soil harvesting while using the compact excavator from the company DOOSAN BOBCAT EMEA s.r.o.. The solution consists in creating two computational models in Rocky DEM and Ansys Mechanical. Rocky DEM software is used to solve the disconnection of soil by excavator components using the discrete element method. The outcome includes courses of forces and moments during the particular time of the individual joints of the model that was used. The obtained courses are then applied as an external load to the joint of a selected structural part of the analyzed model using a kinematic model in ANSYS Mechanical. The kinematic model consists of simplified geometry models of individual parts of the excavator arm, and a more detailed geometry model of the analyzed part of the arm. All the parts are connected to each other by rotational bonds representing joints. A static structural analysis of the mechanical stress is performed in ANSYS Mechanical for the prepared model during the simulated process. Finally, the selected structural part is assessed with respect to the elastic limit and fatigue strength.

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Lopez, Philippe. „Comportement mécanique d'une fracture en cisaillement : analyse par plan d'expériences des données mécaniques et morphologiques connues sur une fracture /“. Thèse, Chicoutimi : [Talence, France] : Université du Québec à Chicoutimi, Université Bordeaux 1, 2000. http://theses.uqac.ca.

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Thèse (Ph.D.)--Université du Québec à Chicoutimi, 2000.
"...pour obtenir le grade de docteur de l'Université Bordeaux I - France et comme exigence partielle au philosophiae doctor de l'Université du Québec à Chicoutimi - Canada. Spécialité: mécanique" La thèse avec ses annexes sont accessibles via le curriculum vitae, section "COMMUNICATIONS". CaQCU CaQCU Document électronique également accessible en format PDF. CaQCU

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Barber-Kersovan, Alenka. „Vom "Punk-Frühling" zum "Slowenischen Frühling" der Beitrag des slowenischen Punk zur Demontage des sozialistischen Wertesystems“. Hamburg Krämer, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2655733&prov=M&dok_var=1&dok_ext=htm.

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Wessling, Albin. „Towards Discrete Element Modelling of Rock Drilling“. Licentiate thesis, Luleå tekniska universitet, Material- och solidmekanik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83911.

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Koleini, Mehran. „Engineering geological assessment and rock mass characterization of the Asmari formation (Zagros range) as large dam foundation rocks in southwestern Iran“. Thesis, University of Pretoria, 2012. http://hdl.handle.net/2263/24303.

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The Zagros fold-thrust belt results from the continent-continent collision between the Arabian margin and the Eurasian plate following the closure of the Neo-Tethys Ocean during the Tertiary. Despite some ongoing controversies about the timing of the onset of the collision there is little doubt that the main episode of the cover shortening in the Zagros folded belt occurred since about 10 Ma as suggested by the youngest folded strata of the Agha Jari red marls. Shortening by about 70 km derived from balanced sections across the Zagros folded belt, yields shortening rates of 7 km Ma-1 consistent with the present-day rates of 0.7 cm yr-1 based on GPS studies. A major unconformity between the Agha Jari formation and the Bakhtyari conglomerates indicates that cover shortening decreased or ceased 5 Ma ago. During or since the deposition of the Bakhtyari Formation, the Zagros fold belt underwent a regional uplift whose origin still remains enigmatic. The deformation is characterized by periodic folding with axial lengths sometimes greater than 200 km. This fold geometry is outlined by the limestone beds of the Asmari Formation, which is one of the main oil reservoirs in the Zagros. The Zagros also serves as the main originating headspring of the rivers running into the Persian Gulf and Oman Sea watersheds. Among all these rivers, the major ones are: Arvand Rud, Gamasb, Karun, Rajah, Zaal and Marun join and form Jarahi, Seymareh, Qareh Aqhaj, Zohreh, Dalaki, Mend, Shur, Minab, Mehran and Naband. Therefore, the Zagros region has high potential for dam construction to control surface water for electric energy, water supply for irrigation of agricultural lands and land reclamation. Among various formations in the Zagros region, the Asmari Formation limestone with relatively exclusive characteristics such as rigidity and morphology is a suitable rock foundation for dams in the Zagros range. It should be considered that the Asmari limestones constitute a series of double plunging, asymmetrical folds with northwest-southeast trend and that the southern flanks are steeper than the north-eastern ones (70° to 90º, locally reversed). Due to varying inclinations, there are much more curvatures of strata in the southwestern flanks of folded structures, with different characteristics of the rock mass in the two flanks of the anticlines. The anticlines, particularly in the Asmari Formation, contain tension-induced, open fracturing which has introduced significant secondary permeability. Engineering geological investigations indicate that there is a clear relationship between rock mass characteristics of the Asmari Formation and tectonic activities such as various tilting and curvature rates of strata at folded structures in the Zagros Mountain range. In this regard it should be considered that the upper and middle units of the Asmari Formation that constituted the main dam foundation rock mass on the northern flanks are influenced by karstification processes which have resulted from aggressive mineral waters. Thus huge karst features and cavities can be observed, where the Gachsaran evaporites stratigraphically overlie Asmari Formation succession limestones. The aggressive mineral waters originating from the Gachsaran Formation play the main role in karstification of the Asmari Formation limestones, whereas the lower Asmari is less influenced by these solutions and karstification processes as it is restricted to where the Karun-3 and Karun-4 dams are situated. Reassessment of available data and geological investigations during this research, lead to a new proposed configuration of engineering characterization of the rock mass for the Asmari formation limestones in the Zagros Region.
Thesis (PhD)--University of Pretoria, 2012.
Geology
unrestricted

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Wishart, Jeremy Scott. „Overtopping Breaching of Rock-Avalanche Dams“. Thesis, University of Canterbury. Civil Engineering, 2007. http://hdl.handle.net/10092/1193.

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River blockages formed by rock avalanches appear to pose a higher hazard potential than other landslide dams, given the extreme run-out distances and volumes of rock avalanche deposits. Recent research has identified rock avalanche deposits to have internal sedimentology consisting of a coarse surficial material (carapace) and a finer fragmented interior (body) potentially of critical importance to rock-avalanche dam stability. Physical scale modelling of overtopping failure and breach development in rock avalanche dams was used to quantify the influence of this sedimentology on critical breach parameters, and their prediction using existing embankment dam breach technologies. Results from this study indicate that the time to failure for rock avalanche dams is approximately twice that observed for homogeneous dams due to the armouring properties of the carapace; and that peak discharge is not significantly affected by sedimentology. While application of empirical, parametric, dimensional and physically based models indicated that uncertainty associated with predicted dam break discharges could range from ±19% to ±107%, no modelling technique was able to simulate the armouring phenomenon adequately. Comparison of actual and simulated breach evolution shows linear assumptions of breach depth and width development (as observed in homogeneous dams) to be incorrect. In the context of hazard management, the results suggest that empirical regression relationships should be used for rapid assessment of potential dam break flood magnitude.

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Alipaz, Sillo Antonio Jhimmy. „Definición ideológica del rock cristiano“. Universidad Mayor de San Andrés. Programa Cybertesis BOLIVIA, 2011. http://www.cybertesis.umsa.bo:8080/umsa/2011/alipaz_san/html/index-frames.html.

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El tema de esta investigación es la definición ideológica del rock cristiano. En la discusión de las características “cristianas” o “mundanas” que generalmente se presenta entre los creyentes cristianos, suele percibirse cierto juego de franquicias ideológicas que tienen el propósito de recuperar los aspectos más relevantes para una adecuada reproducción social y/o cultural de la institución religiosa. En este sentido, el propósito nuestro es el conocimiento etnográfico de la definición ideológica del rock cristiano. Para esto, se ha optado por la utilización de una perspectiva interpretativa de la subjetividad en el rockero cristiano. Interpretación que se define teóricamente mediante las pautas epistemológicas propuestas por el antropólogo norteamericano Clifford Geertz. Así, pues, el objetivo principal está dirigido al conocimiento interpretativo del significado, que se entiende como la representación simbólica que el objeto asume en la subjetividad de los rockeros cristianos; pero, también, de la función, o sea, al empleo que se promueve del mismo objeto entre aquellos. De esta manera, la definición ideológica del rock cristiano se descubre en la explicación exegética que se tiene de su significado y/o función religiosa. Para el análisis de este objetivo, se ha visto por conveniente la consideración de un esquema de clasificación etnomusicológico que —así como fue postulado por Alan P. Merriam— debe enfocarse en la representación que la música tiene para un determinado grupo social y/o cultural. En este sentido, los objetivos secundarios están establecidos en los siguientes aspectos temáticos: a. instrumentos musicales; b. lírica de las canciones; c. clasificación de la música; d. papel y categoría de los músicos; e. utilización de la música; f. creatividad artística. La metodología está basada en la etnografía, o sea, en el trabajo de campo antropológico, es decir, en la convivencia del investigador con los sujetos de estudio, refiriendo los aspectos que hacen a su propia cultura. En este sentido, las técnicas que constituyen a la etnografía están basadas en la observación, o sea, el examen del tiempo y/o espacio de los sujetos de estudio, y la entrevista, es decir, el conocimiento de los pensamientos sociales y/o culturales de los sujetos de estudio. Esta metodología se ha efectuado entre los miembros de la Congregación Cristiana Vida Nueva, que funciona en la ciudad de La Paz, zona de Villa Fátima, avenida Tejada Sorzano, nº 532. Concretamente, las técnicas etnográficas han sido aplicadas al “ministerio de alabanza y adoración” de esta congregación pentecostalista. Por su parte, las entrevistas personales se han realizado mayoritariamente entre los músicos cristianos del grupo Ciudad de Dios. En conclusión se afirma que la definición ideológica del rock cristiano se efectúa en el acuerdo íntimo o “comunión de santidad” que los creyentes cristianos tienen con Dios; pero, también, en relación con la utilidad práctica que esta clase de música cristiana ofrece para la evangelización y/o adoración pentecostalistas, principalmente

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Noorian-Bidgoli, Majid. „Strength and deformability of fractured rocks“. Doctoral thesis, KTH, Mark- och vattenteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-155719.

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This thesis presents a systematic numerical modeling framework to simulate the stress-deformation and coupled stress-deformation-flow processes by performing uniaxial and biaxial compressive tests on fractured rock models with considering the effects of different loading conditions, different loading directions (anisotropy), and coupled hydro-mechanical processes for evaluating strength and deformability behavior of fractured rocks. By using code UDEC of discrete element method (DEM), a series of numerical experiments were conducted on discrete fracture network models (DFN) at an established representative elementary volume (REV), based on realistic geometrical and mechanical data of fracture systems from field mapping at Sellafield, UK. The results were used to estimate the equivalent Young’s modulus and Poisson’s ratio and to fit the Mohr-Coulomb and Hoek-Brown failure criteria, represented by equivalent material properties defining these two criteria. The results demonstrate that strength and deformation parameters of fractured rocks are dependent on confining pressures, loading directions, water pressure, and mechanical and hydraulic boundary conditions. Fractured rocks behave nonlinearly, represented by their elasto-plastic behavior with a strain hardening trend. Fluid flow analysis in fractured rocks under hydro-mechanical loading conditions show an important impact of water pressure on the strength and deformability parameters of fractured rocks, due to the effective stress phenomenon, but the values of stress and strength reduction may or may not equal to the magnitude of water pressure, due to the influence of fracture system complexity. Stochastic analysis indicates that the strength and deformation properties of fractured rocks have ranges of values instead of fixed values, hence such analyses should be considered especially in cases where there is significant scatter in the rock and fracture parameters. These scientific achievements can improve our understanding of fractured rocks’ hydro-mechanical behavior and are useful for the design of large-scale in-situ experiments with large volumes of fractured rocks, considering coupled stress-deformation-flow processes in engineering practice.

QC 20141111

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Bücher zum Thema "Rocky DEM"

Gardens, Denver Botanic, American Rock Garden Society und International Rock Garden Plant Conference (2nd : 1986 : Boulder, Colo.), Hrsg. Rocky Mountain Alpines: Choice rock garden plants of the Rocky Mountains in the wild and in the garden. Portland, OR: Timber Press, 1986.

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Gianni, Della Cioppa, Hrsg. Il negromante del rock: Le origini dei Death SS. Falconara Marittima (AN) [i.e. Ancona, Italy]: Crac, 2011.

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Thies, Klaus Johannes. Die Dunkelkammer unter dem Rock: Geschichten. Leipzig: Reclam, 1998.

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Sombra del rock. México, D.F: Trilce Ediciones, 2011.

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Julià, Ignacio. Geografía del rock. Valencia: Máscara, 1997.

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Poéticas del rock. Buenos Aires: Marcelo H. Oliveri Editor, 2007.

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Dodd, Philip. Libro del rock. Barcelona: Ediciones B, 2001.

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Def Leppard: "Rock! Rock! till you drop". Berkeley Heights, NJ: Enslow Publishers, 2010.

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Montoro, Isaac Felipe. Los demonios del rock. [Peru]: Gabrielle Editores, 1994.

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1973-, Duque Carlos R., Hrsg. Burning: Veneno del rock. Lleida: Editorial Milenio, 2010.

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Buchteile zum Thema "Rocky DEM"

Saftig, Simone. „»Ich war ein Sack voller vergammelnder Träume«:“. In Alter(n)skulturen, 285–302. Bielefeld, Germany: transcript Verlag, 2022. http://dx.doi.org/10.14361/9783839459928-014.

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Simone Saftig untersucht in ihrem Beitrag Darstellungsformen von Alter in der Populärliteratur am Beispiel von Rocko Schamonis Roman »Fünf Löcher im Himmel«. Sie geht der Frage nach, inwiefern das Selbstbild des alternden Protagonisten, die Bilanzierung seines Lebens und mögliche Zukunftsvisionen besonders durch die Erinnerung an seine Jugend bestimmt werden. Unter Berücksichtigung verschiedener philosophischer, psychologischer und soziologischer Alterstheorien analysiert sie den Roman in Hinblick auf die Themen Adoleszenz und Alter, Zeit und Verfall, Erinnerung und Identität.

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Wang, Guodong, und Francesco Calvetti. „DEM Modelling of Ice Filled Rock Joints“. In Challenges and Innovations in Geomechanics, 941–48. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64518-2_112.

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Abrahão, Ricardo. „Soft Rocks in Dam Foundation and Dam Sites“. In Soft Rock Mechanics and Engineering, 699–718. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-29477-9_24.

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Marchuk, A. „Results of stressed anchorage study at the Bratsk dam“. In Rock Bolting, 593–98. London: Routledge, 2021. http://dx.doi.org/10.1201/9780203740507-60.

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Picado, Estefanía, und Raúl E. de Barrio. „Ornamental Rocks from Tierra del Fuego“. In Springer Geology, 43–58. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-60683-1_4.

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Yoshioka, Keita, Mathias Nest, Daniel Pötschke, Amir Shoarian Sattari, Patrick Schmidt und David Krach. „Numerical Platform“. In GeomInt–Mechanical Integrity of Host Rocks, 63–95. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-61909-1_3.

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AbstractAn essential scientific goal of the GeomInt project is the analysis of potentials and limitations of different numerical approaches for the modelling of discontinuities in the rocks under consideration in order to improve the understanding of methods and their synergies with regard to theoretical and numerical fundamentals. As numerical methods, the “Lattice Element Method” (LEM), the non-continuous discontinuum methods “Discrete Element Method” (DEM), the “Smoothed Particle Hydrodynamics” (SPH), the “Forces on Fracture Surfaces” (FFS) as well as the continuum approaches “Phase-Field Method” (PFM), “Lower-Interface-Method” (LIE), “Non-Local Deformation” (NLD) and the “Hybrid-Dimensional Finite-Element-Method” (HDF) will be systematically investigated and appropriately extended based on experimental results (Fig. 3.1).

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Pastore, Eraldo L. „Sandstones in Dam Foundations and Tunnels“. In Soft Rock Mechanics and Engineering, 109–28. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-29477-9_5.

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Bettendorf, Gerhard. „Rock, John“. In Zur Geschichte der Endokrinologie und Reproduktionsmedizin, 455–56. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79152-9_185.

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Freitas, Manoel de S. „Soft Rock as a Dam Construction Material“. In Soft Rock Mechanics and Engineering, 719–42. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-29477-9_25.

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Nader, François, Klaus Thoeni, Anna Giacomini, Stephen Fityus und Olivier Buzzi. „Numerical Investigation of the Strength Variability of Rock Using DEM“. In Challenges and Innovations in Geomechanics, 895–902. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-64514-4_97.

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Konferenzberichte zum Thema "Rocky DEM"

Mirzamatov, R. R. „SIMULATION OF THE MOVEMENT OF ALFALFA SEEDS IN THE EXPERIMENTAL SCARIFIER USING ROCKY DEM“. In Международная студенческая научно-практическая конференция "Наука. Образование. Профессия". Башкирский государственный аграрный университет, 2022. http://dx.doi.org/10.31563/9785745607950-2022-113-117.

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Meng, Lin, Baoqing Hu und Lianglin Wu. „Artificial neural network classification of Karst rocky desertification degree using SPOT satellite imagery and DEM data“. In Seventh International Symposium on Multispectral Image Processing and Pattern Recognition (MIPPR2011), herausgegeben von Jianguo Liu, Jinwen Tian, Hongshi Sang und Jie Ma. SPIE, 2011. http://dx.doi.org/10.1117/12.901954.

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Elemam, Mahmoud Ahmed, Chen Han, Shi wei Dong und Ling Zhou. „<i>ROCKY DEM- CFD simulation for Realistic Granular Flow in an Aerodynamic separating device. </i>“. In 2019 Boston, Massachusetts July 7- July 10, 2019. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2019. http://dx.doi.org/10.13031/aim.201900387.

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Opalev, Aleksandr, und Anita Palivoda. „STUDY OF THE CONJUGATE SOLUTION OF ROCKY DEM AND ANSYS FLUENT SOFTWARE FOR MODELING THE SINGLE-PHASE FLUID-SOLID SYSTEM FOR FURTHER MODELING OF GRINDING PROCESSES“. In 21st SGEM International Multidisciplinary Scientific GeoConference Proceedings 2021. STEF92 Technology, 2021. http://dx.doi.org/10.5593/sgem2021/1.1/s04.074.

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Monley, Greg J., Steve Jamieson, Henry (Sonny) Buczek und Don Lopez. „Clear Lake Dam Replacement: RCC Dam on a Challenging Soil Foundation“. In Rocky Mountain Geo-Conference 2018. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481936.006.

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Myers, Sarah, John Batka, Robin Dornfest und Steve Kuehr. „Small Dam, Big Problems, Unique Solutions—Coal Ridge Waste Dam“. In 2016 Biennial Rocky Mountain Geo-Conference. Reston, VA: American Society of Civil Engineers, 2016. http://dx.doi.org/10.1061/9780784480250.011.

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Schoolmeesters, Ryan. „Calibration Models Reveal Stability Concerns at Marshall Lake Dam“. In Rocky Mountain Geo-Conference 2018. Reston, VA: American Society of Civil Engineers, 2018. http://dx.doi.org/10.1061/9780784481936.007.

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Kuehr, Steve. „Geosynthetic Clay Liner Used to Rehabilitate Lower Chinns Dam, Colorado“. In Rocky Mountain Geo-Conference 2021. Reston, VA: American Society of Civil Engineers, 2021. http://dx.doi.org/10.1061/9780784483268.010.

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Foster, Derek H., Dan Bole und Ted W. Deere. „Rio Grande Dam - Seepage Reduction Design and Construction“. In 2014 Biennial Rocky Mountain Geo-Conference. Reston, VA: American Society of Civil Engineers, 2014. http://dx.doi.org/10.1061/9780784413807.003.

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Ghorbanpour, Amin B. „Importance of Dataset Size in Liquefaction Study for a New Earth Dam in Colorado“. In Rocky Mountain Geo-Conference 2022. Reston, VA: American Society of Civil Engineers, 2022. http://dx.doi.org/10.1061/9780784484517.005.

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Berichte der Organisationen zum Thema "Rocky DEM"

McDonald, Robert. Rock Island Dam Smolt Monitoring; 1996 Annual Report. Office of Scientific and Technical Information (OSTI), Oktober 1996. http://dx.doi.org/10.2172/564125.

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Peven, Charles M., Diane H. Sheffield und Paul C. Fielder. Rock Island Dam Smolt Monitoring, 1987 Final Report. Office of Scientific and Technical Information (OSTI), August 1987. http://dx.doi.org/10.2172/766705.

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Peven, Charles M., und Paul C. Fielder. Rock Island Dam Smolt Monitoring, 1988 Final Report. Office of Scientific and Technical Information (OSTI), September 1988. http://dx.doi.org/10.2172/766713.

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Peven, Charles M. Rock Island Dam Smolt Monitoring, 1991 Annual Report. Office of Scientific and Technical Information (OSTI), September 1991. http://dx.doi.org/10.2172/766722.

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Truscott, Keith B., und Paul C. Fielder. Rock Island Dam Smolt Monitoring; 1994-1995 Annual Report. Office of Scientific and Technical Information (OSTI), Oktober 1995. http://dx.doi.org/10.2172/437700.

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Filiz, Ibrahim, Jan René Judek, Marco Lorenz und Markus Spiwoks. Hüftsteife Aktienmarktanalysten. Sonderforschungsgruppe Institutionenanalyse, Februar 2021. http://dx.doi.org/10.46850/sofia.9783941627895.

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Wenn die Variabilität der Wirklichkeit systematisch unterschätzt wird, kann dies im Bereich der Aktienmarktprognose zu sehr kostenträchtigen Fehleinschätzungen beitragen. Die Zuverlässigkeit von Aktienmarktprognosen wird nur selten untersucht. Zwar liegt eine große Zahl von Studien zu Gewinnprognosen (pretax profit forecasts) vor (vgl. Ramnath, Rock & Shane, 2008), aber Untersuchungen der Prognosen von Aktienkursen, Aktienindizes oder Aktienrenditen sind nach wie vor rar. Deshalb wendet sich die vorliegende Studie der Betrachtung von Aktienindexprognosen zu. Es handelt sich um Prognosen des Deutschen Aktienindex (DAX), des Dow Jones Industrial Index (DJI) und des Euro Stoxx 50 (SX5E), die im Zeitraum von 1992 bis 2020 in den deutschen Tagesbeziehungsweise Wirtschaftszeitungen „Handelsblatt“ (HB) und „Frankfurter Allgemeine Zeitung“ (FAZ) veröffentlicht werden. Es handelt sich dabei um Prognosen mit Prognosehorizonten von sechs und zwölf Monaten, die regelmäßig von deutschen und internationalen Bankhäusern erstellt werden. In der vorliegenden Studie wird die Frage aufgeworfen, ob das Verhalten der betrachteten Aktienmarktanalysten der von Ogburn (1934) beschriebenen Charakteristik des Konservatismus entspricht und ob die Prognosen als tauglich oder als untauglich zu beurteilen sind.

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Calomeni, Alyssa, Charles Theiling und Burton Suedel. Planning and implementation of environmental pool management at Lake Red Rock, Des Moines River, Iowa. Engineer Research and Development Center (U.S.), September 2022. http://dx.doi.org/10.21079/11681/45524.

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This technical note complements “Environmental Pool Management: The 25-Year Evolution of an Engineering With Nature® Practice,” an ArcGIS Story Map available for public access on the Engineering With Nature (EWN) website (EWN 2021b), and communicates the planning and implementation of environmental pool management (EPM) at Lake Red Rock located along the Des Moines River in Iowa.

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Truscott, Keith B. Juvenile Salmonid Monitoring at Rock Island Dam Bypass Sampler, 1985 Annual Report. Office of Scientific and Technical Information (OSTI), Dezember 1985. http://dx.doi.org/10.2172/766693.

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Fielder, Paul C., und Charles M. Peven. Juvenile Salmonid Monitoring at Rock Island Dam Bypass Sampler, 1986 Annual Report. Office of Scientific and Technical Information (OSTI), Oktober 1986. http://dx.doi.org/10.2172/766702.

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Llopis, Jose L., Michael K. Sharp und Enrique E. Matheu. In Situ Geophysical Surveys for Estimation of Foundation Rock Properties, Concrete Gravity Section, Folsom Dam. Fort Belvoir, VA: Defense Technical Information Center, August 2005. http://dx.doi.org/10.21236/ada438857.

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