bluuebunny/crossref_metadata_2025_split huggingface dataset:
Metaheuristic‐based approach for state and process parameter prediction using hybrid grey wolf optimization
Authors: Sankaranarayanan S. , Sivakumaran N. , Radhakrishnan T.K. , Swaminathan G. 
Published: June 2018

AbstractMetaheuristic‐based optimization algorithms can be used to solve the complexities in estimating the parameters and states of a complex nonlinear process. In this work, a hybridized version of grey wolf optimizer is employed to solve the intricacies of a complex linear process using hybrid grey wolf optimization. The proposed algorithm is executed simultaneously in 2 steps: (a) predicting the parameters and states using grey wolf optimizer and (b) updating the predicted parameters using static modified Kalman–Bucy mechanism. The significance of the hybridization is that it improves the convergence rate towards an optimal solution and explores global optimum effectively over a complex search space. The performance of the proposed algorithm is tested through 10 typical benchmark functions and is compared with the parent algorithm, grey wolf optimizer, and conventional particle swarm optimization. Furthermore, the findings of the hybrid grey wolf optimization are compared with the outcomes of the conventional algorithms to establish the effectiveness of the proposed hybrid grey wolf optimization in process parameter estimation.
Selective Hydrosilylation of Alkynes with Octaspherosilicate (HSiMe2O)8Si8O12
Authors: Stefanowska Kinga , Franczyk Adrian , Szyling Jakub , Pyziak Mikołaj , Pawluć Piotr , Walkowiak Jędrzej 
Published: June 2018

AbstractComprehensive studies on platinum‐catalyzed hydrosilylation of a wide range of terminal and internal alkynes with spherosilicate (HSiMe2O)8Si8O12 (1 a) were performed. The influence of the reaction parameters and the types of reagents and catalysts on the efficiency of the process, which enabled the creation of a versatile and selective method to synthesize olefin octafunctionalized octaspherosilicates, was studied in detail. Within this work, twenty novel 1,2‐(E)‐disubstituted and 1,1,2‐(E)‐trisubstituted alkenyl‐octaspherosilicates (3 a–m, 6 n–t) were selectively obtained with high yields, and fully characterized (1H, 13C, 29Si NMR, FTIR, MALDI TOF or TOF MS ES+ analysis). Moreover, the molecular structure of the compound (Me3Si(H)C=C(H)SiMe2O)8Si8O12 (3 a) was determined by X‐ray crystallography for the first time. The developed procedures are the first that allow selective hydrosilylation of terminal silyl, germyl, aryl, and alkyl alkynes with 1 a, as well as the direct introduction of sixteen functional groups into the 1 a structure by the hydrosilylation of internal alkynes. This method constituted a powerful tool for the synthesis of hyperbranched compounds with a Si−O based cubic core. The resulting products, owing to their unique structure and physicochemical properties, are considered novel, multifunctional, hybrid, and nanometric building blocks, intended for the synthesis of star‐shaped molecules or macromolecules, as well as nanofillers and polymer modifiers. In the presented syntheses, commercially available reagents and catalysts were used, so these methods can be easily repeated, rapidly scaled up, and widely applied.
Successful systemic thrombolytic therapy for massive pulmonary embolism in a patient with breast cancer, brain metastasis, and thrombocytopenia: A case report
Authors: Alirezaei Toktam , Hajimoradi Behzad , Pishgahi Mehdi , Nekooghadam Seyyed Mojtaba , Golmohamadi Mohamad 
Published: June 2018

Key Clinical MessageA female with massive PTE and absolute contraindication for thrombolytic did not meet guidelines due to unavailability of catheter or surgical embolectomy and giving thrombolytic as a last resort to save a life. In such cases, physicians should consider to act outside of the guidelines to save a life.
Some data about geotechnical engineering in the Republic of Macedonia
Authors: JOVANOVSKI Milorad , PAPIĆ Jovan Br. , SHESHOV Vlatko , VITANOV Vasil , TALAGANOV Kosta 
Published: June 2018

AbstractThe long tradition of Danube‐European conferences obliges the geotechnical society to show highest respect to historical facts, as essential basis for further development. Having in mind that XVI Danube‐European Conference on Geotechnical Engineering (DECGE) is held in Skopje, it is good occasion to present some historical data connected with development of geotechnics in R. Macedonia (RM) to larger scientific community. Facts about teaching tradition, first‐time‐ever application of testing methods and some rare phenomenon – part of world geological heritage, are underlined. The authors also note details about present state of geotechnics in RM. Knowing that geotechnical hazards and risks are never confined with state borders, it is underlined that closer cooperation between experts in geotechnical family is necessary. The idea is to insure applicable engineering politics along Danube catchment area and wider, which confirms that the vision of Austrian Society of Engineers and Architects from the First DECGE to bring together geotechnical engineers is still – vital.
Comparison of field loading test results of bored piles with bearing capacity analysis based on various standards
Authors: SAGLAMER Ahmet , OZALP Hüsnü Korhan , KARGIOGLU Bahadir 
Published: June 2018

AbstractICA Construction (Ictas ‐ Astaldi JV) is the general contractor of the WHSD ring road project in St. Petersburg and Section 7 & 8 of M11 Motorway project, which will be the toll highway between St. Petersburg and Moscow. WHSD ring road that has been constructed by ICA Construction passes through nearshore and offshore areas on viaducts and there are also two cable stayed bridges on the alignment. As a part of M11 motorway project, several bridges have been constructed overpassing various rivers. Since, all these structures have deep foundation systems, several axial pile loading tests have been performed on both projects. Soil in the vicinity of St. Petersburg consists of soft to medium dense silty, partially sandy clay layers at top levels. These layers are followed by Cambrian aged hard clay layers. In Russian Federation and some Eastern European countries, bored pile design is based on SNIP norms. In norms like AASHTO or Eurocode, pile bearing capacity calculations consider both contribution of the tip resistance and skin friction. On the contrary, in SNIP norms contribution of the skin friction to pile bearing capacity is very limited. Therefore, piles are generally extended to deep bearing layers. For piles where large axial bearing capacities are required, base enlargement is applied. In this paper, axial pile bearing capacities in the scope of the above mentioned projects are calculated based on SNIP, AASHTO LRFD and Eurocode 7, respectively and the calculated values are compared with the pile bearing capacities obtained from field tests. Total number of axial pile load tests gives the possibility to make a statistical comparison. Results of axial pile load tests have revealed that especially the bearing capacities calculated in accordance with SNIP norms underestimates bearing capacities of bored piles erected in clayey soils.
Interaction of transport infrastructure with natural hazards (landslides, rock falls, floods)
Authors: VANÍČEK Ivan , JIRÁSKO Daniel , VANÍČEK Martin 
Published: June 2018

AbstractThe significance of the transport infrastructure is going strongly up during last period. It is connected with two aspects. Firstly the interest is connected with energy consumption as about 40% of overall consumption is consumed for transport infrastructure. Secondly the interest is focused on securing the serviceability of transport infrastructure also during nonstandard conditions. Between these conditions belong not only cases elicited by human factor, as transport for example the blockade caused by transport accident, but also by cases elicited by external factors, mostly by natural hazards. The paper is focused on securing serviceability during natural impacts ‐ hazards. Floods, landslides, rock falls are natural hazards typical for middle Europe. Therefore natural hazards like tsunami, typhoons, hurricanes typical for coastal zones, or avalanches typical for alpine zones, respective earthquakes for seismic prone zones are not included in. The paper is therefore focussed in more details on the interaction of transport infrastructure with floods, landslides and rock falls with the main aim to guarantee at least limited serviceability during such events. In doing so the view of geotechnical engineering is playing primordial task.
Optimized design of foundations on soil reinforced by floating columns
Authors: BOUASSIDA Mounir , ELLOUZE Souhir 
Published: June 2018

AbstractThis paper studies the reinforcement of very thick compressible soft soil layer by floating columns. Analysis is made on the basis of recent methodology of design that combines the bearing capacity and settlement verifications to provide the optimized improved area ratio. Introducing the allowable long term settlement of unreinforced compressible soil and assuming that the short term total settlement is completed at the end of construction an optimized length of floating columns is obtained. The discussion of this method of design highlights the feasibility of a potential solution of reinforcement in making a whole cost effective design both including the improvement area ratio within the reinforced upper layer and the thickness of the soft clay. Design charts are proposed for soft clays reinforced by floating columns. Illustration by a case study highlighted the efficiency of floating columns.
In‐situ and laboratory methods for liquefaction hazard assessment
Authors: BOJADJIEVA J. , SHESHOV Vl. , EDIP K. , KITANOVSKI T. , CHANEVA J. 
Published: June 2018

AbstractConsidering liquefaction as one of the geotechnical instabilities (problems), which increase damages during strong earthquakes, there are different approaches available for assessment of its potential. The study presents the investigations and results on the evaluation of the potential of liquefiable soil layers at location where new business ‐ residential complex is planned to be built. Results from the performed in situ investigations (SPT, CPT) and laboratory experiments provide valuable contribution regarding the evaluation of liquefaction hazard at the location with medium to high seismicity and non‐homogenous soil condition. Furthermore, recommendations are given for the proper depth as a foundation level of the structures that are planned to be built on this site. Methodology applied in this study points out the necessity of attention and precaution to deliver conclusions for potential of liquefaction in urban areas.
Methods for assessment and identification of dispersive soils
Authors: DJOKOVIĆ Ksenija , ČAKI Laslo , ŠUŠIĆ Nenad , HADŽI‐NIKOVIĆ Gordana 
Published: June 2018

AbstractDispersive clay soils represent a specific type of fine‐grained soils, which can not be determined by the visual classification or using standard identification ‐ classification tests such as granulometric (particle size) analysis, plasticity tests and similar. The paper gives an overview of the results of testing dispersivity of fine‐grained soil using other classification tests: the crumb test, the double hydrometer test and the pinhole test. Tests were conducted on samples: sandy clay embankment dams of “Rovni”, loess from different locations (Zemun, Novi Beograd, Titel, Kelebija, Srbobran, Slankamen, Ruma, Mali Iđoš) and kaolinite sandy clay deposits Grabež ‐ Aranđelovac. In order to improve soil properties, special consideration was given to the influence of soil compaction to dispersion properties. However, dispersion tests obtained with the use of the pinhole method at different degrees of compaction showed that the degree of compaction has no significant effect on the soil behavior, i.e. its class of dispersion.
The use of InSAR as a tool to assess ground deformation: the cases of Rácalmás and Dunaszecksó, Hungary
Authors: RAVENTÓS Josep , SÁNCHEZ Jordi , FUSI Bálazs 
Published: June 2018

AbstractIn the FP7 DORIS project, one of the main tasks was devoted to generate and deliver relevant and accurate maps and timely information for managing the different civil defence phases involved in the onset of ground deformation. TRE ALTAMIRA provided ground motion data over different periods of time by the use of Synthetic Aperture Radar Interpherometry on sites of Rácalmás and Dunaszeksö, where high loess river bank collapses along the Danube with deep seated landslides affected urban areas and infrastructures, and former volcanic mountain with several ground deformation events occured. Several radars and time periods where used to obtain the maximum information: L band mid‐resolution sensors ERS and ENVISAT for 1992–2002 and 2003–2010, ALOS sensor for 2007 and 2011 and X band high‐resolution TerraSAR‐x for 2011. Their combination allows to improve and optimize the information and to correlate radar with on‐site data, improving the knowledge of the phenomena and its triggering as well as the in situ observational method approach.
Experimental interpretation of seismically induced instability of mountain slopes
Authors: TOWHATA Ikuo , GUNJI Keigo 
Published: June 2018

AbstractThis paper addresses the earthquake‐induced landslide and the post‐earthquake slope instability. After gigantic earthquakes in Taiwan, Pakistan and China have been suffering many slope disasters and there are many reasons for such long‐term aftereffects. Namely, the induced surface cracks can bring in rain water and affect the slope stability. On the other hand, the present study is interested in material deterioration caused by cyclic shear stress and attempted to demonstrate the relationship between the intensity of cyclic shear and the decrease of material strength. The unconfined compression tests were conducted on artificial rock samples to reveal that the post‐cyclic peak stress and strain follows a unique curve and that the strength decreases in accordance with the magnitude of cyclically induced strain. It is further interesting that a similar deterioration occurs after creep deformation, accounting for the material weakening and many slope failures along fault zones where long‐term static loading induces creep deformation. This finding is in line with what is called process zone.
Evaluation of the landslide risk based on the hazard maps for Iasi city, in Romania
Authors: ADOMNITEI Cristian , LUNGU Irina , STANCIU Anghel , ANICULAESI Mircea 
Published: June 2018

AbstractAccording to the World Bank statistics, 57% of the total yearly losses of Romania are caused by flooding and landslides. At the same time, 37.4% of the country surface and 45.8% of the population is subjected to risk, while approximately 50.3% of the yearly national income can be affected by material losses and human lives as result of natural disasters (earthquakes, flooding and landslides). The paper presents the drawing up stages of the landsliding hazard map and the quantification of the hazard medium coefficient (K(m)) for a particular zone, respectively in Iasi city – Bucium area. Through a comparative analysis between the values of the stability factor (Fs), using the Spencer method for the area taken into consideration, and the distribution of the hazard medium coefficient values for landsliding (K(m)), a good correspondence between the two indicators reflecting the slope stability has been identified.
Integrative analysis used for landslide susceptibility zoning at local scale based on GIS modeling
Authors: DOBRESCU Cornelia‐Florentina , CĂLĂRAŞU Elena‐Andreea , HUZUI‐STOICULESCU Alina Elena 
Published: June 2018

AbstractThe current use of risk assessment methods with parametric analysis and GIS‐based techniques to develop susceptibility models were implemented at local scale in a selected landslide prone areas, in order to improve the urban planning strategies and emergency management tools using site‐specific criteria. For spatial analysis and GIS numerical modeling, the geomorphologic data from digital elevation model were used. Combined semi‐quantitative and deterministic approaches were carried out to obtain spatial distribution mapping of stability factor on different sites. The semi‐quantitative method deals with quantification of several intrinsic parameters related to landslide process using the available national inventory database. In deterministic approach, the integration of infinite slope model based on geotechnical properties was performed for mapping stability factor and defining spatial distribution of susceptibility classes. Landslide information will contribute to further strategies for decision makers and planners using multidisciplinary assessment information.
Groundwater Pollution Threats in the Republic of Macedonia due to Uncontrolled Landfills
Authors: DONEVSKA Katerina , PESHEVSKI Igor , KOSTADINOV Trajce 
Published: June 2018

AbstractWaste management practices are among the most important environmental issues in the Republic of Macedonia. Reusing, recycling, recovery and treatment of municipal solid waste are very limited. Nearly all municipal solid wastes in the country are disposed on landfills, out of which some are sanitary, while most are uncontrolled landfills/dumps and do not comply with the Directive 99/31/EC of 26 April 1999 set by the European Commission. This is a major environmental concern due to pollution of surrounding soil, ground and surface waters, human and wildlife food sources, animal habitat patterns and aesthetic impacts in the countryside. Available data about uncontrolled landfills locations are mapped and compared to the geology, hydrogeology, groundwater vulnerability as well as rainfall maps, upon which appropriate analysis is performed related to the groundwater contamination potential. The uncontrolled landfill sites and surrounding regions are then ranked according to their threats for groundwater contamination and prioritized for sustainable remediation.
Geotechnical consideration of the cut‐and‐fill slope problems related to the Struma motorway construction
Authors: KERENCHEV Nikolay , MIHOVA Lena 
Published: June 2018

AbstractThe forthcoming construction of the Struma motorway which is part of the Pan‐European corridor IV is one of the most challenging geotechnical assignments in Bulgaria nowadays. The road trace is situated in a region of high seismic activity where the topography reveals mostly areas with steep mountain slopes. Geotechnical considerations of the road construction including cut‐and‐fill works and building of different supporting structures as pile founded retaining structures, anchor systems and reinforced soil embankments is needed. Numerical solutions based on the limit equilibrium theory and the finite element method are applied. This paper analyses and summarizes the design options and the results of the different numerical models of preferred structures.
Risk assessment in reconstruction of flood protection embankments due to climate change
Authors: KOVAČEVIĆ Meho Saša , JURIĆ KAĆUNIĆ Danijela , LIBRIĆ Lovorka , BAČIĆ Mario 
Published: June 2018

AbstractThis paper presents the methodology for risk assessment in reconstruction of embankments for protection of floods caused by climate change. Main risks that appear in such projects have been identified. For assessing the risks in the project of reconstructing the Otok Virje ‐ Brezje flood protection embankment, the Analytic Hierarchy Process (AHP), one of the methods for multiple criteria decision‐making, is applied. The result of the risk assessment is a list of risk priorities. Depending on the position a risk occupies in the list, i.e. the relative value of its exposure compared to other risks, appropriate contingencies are applied as the expected response to the risk. Sensitivity analyses have shown exceptional stability of the results of the decision‐making.
Some limitations during hydraulic and geotechnical design of small flood protection embankment near the river Neretva
Authors: LJUBENKOV Igor , STRAŠESKI Atanas , PAPIĆ Br. Jovan 
Published: June 2018

AbstractThe small Krvavac settlement is situated on the shore of the Neretva river in R. Croatia. It has suffered from floods in the past, due to which programme has been prepared in order to design a protective embankment. The groundwater at the location is almost at the ground surface, and different soil materials are present, with variable parameters. Thus, after accepting the appropriate cross section and respecting the geotechnical data, slope stability calculations have been conducted, which allowed more precise position of the geosynthetic impermeable material, as well as settlement analyses for several time domains which asked for recommendations in order to reduce their intensity. The obtained experiences stress the need of such embankments, regardless the settlement size, especially due to unexpected radical changes of weather conditions not only in the region.
Assessment of landslide‐related hazard and risk on the road network of the Valjevo city, Serbia
Authors: MARJANOVIĆ Miloš , ABOLMASOV Biljana , ĐURIĆ Uroš , KRUŠIĆ Jelka 
Published: June 2018

AbstractDuring the heavy rainfall and associated disastrous floods and massive landslides in 2014, the territory of the the Valjevo City, located in the western Serbia, suffered strong road network issues, particularly landslide‐related effects. Herein, it was attempted to assess critical sections, to propose targeted and systematic actions. The network included about 200 km of categorized roads which were identified as elements at risk. The territory was assessed for landslide susceptibility and hazard, by Analytical Hierarchy Process multi‐criteria approach, with standard conditioning factors and landslide inventory from BEWARE project deliverables. Further analysis involved exposure and vulnerability assessment per each road segment, including distance to the highest landslide hazard zone and road segment importance/frequency/quality‐state. These were overlapped and the risk along the road network segments was delineated. High risk points were used to simulate road breaks in various routing impact scenarios, to delineate road segments with highest priority for preventive/precaution actions.
One approach in definition of acceptable level of risk for slopes in hard rocks
Authors: PESHEVSKI Igor , JOVANOVSKI Milorad , NEDELKOVSKA Natasha , LEPITKOVA Sonja 
Published: June 2018

AbstractSlope stability analysis in hard rocks is one of the most complex tasks in geotechnical engineering. It requires application of specific design principles in order to find a way to incorporate all uncertainties coming from geological, geotechnical, economic and social aspects. In the frame of this article are presented the basics of one approach that shows how is possible to link the acceptable level of risk with the values of Factor of Safety or Probability of Failure. The methodology is supported with some results from stability analyses performed for slopes on the access road to dam “Sveta Petka” in R.Macedonia and some other case histories. Based on these analyses, the article gives some new proposals in definition of acceptable (tolerable) level of risks using also criteria of probability of failure, potential loss of life and economic impacts.