A new approach of prediction of Sidoarjo hot mudflow disastered area based on cellular automata with probabilistic adjustment for minimizing prediction errors is proposed. Sidoarjo hot mudflow has specific characteristics such as plane and complex area, huge mud plumes, high viscosity and surface temperature changes, so that it needs combined approaches of slow debris flow, and material changes caused by viscous fluid and thermal changes. Some deterministic approaches can not show the high state changes. This paper presents a new approach of cellular automata using probabilistic state changing to simulate hot mudflow spreading. The model was calibrated with the time series of topological maps. The experimental results show new inundated areas that are identified as high risk areas where are covered by mud. It is also show that the proposed probabilistic cellular automata approach works well for prediction of hot mudflow spreading areas much accurate than the existing conventional methods.
Modeling Sediment Accumulation at Kenyir Reservoir Using GSTARS3ijceronline
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
Modeling Sediment Accumulation at Kenyir Reservoir Using GSTARS3ijceronline
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
Groundwater Quality Modelling using Coupled Galerkin Finite Element and Modif...AM Publications
This paper presents a coupled Galerkin finite element model for groundwater flow simulation (FEFLOW)
and Modified Method of Characteristics model for the simulation of solute transport (MMOCSOLUTE) in twodimensional,
transient, unconfined groundwater flow systems. The coupling factor is velocity field which is simulated
by finite element technique. The study mainly focuses on groundwater quality aspects hence the flow simulation
model has been kept conventional whereas the solute transport model is improvised by approximating dispersion term.
This coupled model is used to obtain the space and time distribution of head and concentration for the reported
synthetic test case. Further the sensitivity of model results to variation in parameters viz. porosity, dispersivity and
combined injection and pumping rates is analyzed. The model results are compared with the reported solutions of the
model presented by Chiang et al. (1989).
ASSESSING THE EFFECTS OF SPATIAL INTERPOLATION OF RAINFALL ON THE STREAMFLOW ...civej
Precipitation within a river basin varies spatially and temporally and hence, is the most relevant input for
hydrologic modelling. Various interpolation methods exist to distribute rainfall spatially within a basin.
The sparse distribution of raingauge stations within a river basin and the differences in interpolation
methods can potentially impact the streamflow simulated using a hydrologic model. The present study
focuses on assessing the effect of spatial interpolation of rainfall using Theissen polygon, Inverse distance
weighted (IDW) method and Ordinary Kriging on the streamflow simulated using a physically based
spatially distributed model-SHETRAN in Vamanapuram river basin in Southern Kerala, India. The
SHETRAN model in the present study utilises rainfall data from the available rain gauge stations within the
basin and potential evapo-transpiration calculated using Penman-Monteith method, along with other input
parameters like soil and landuse. Four years of rainfall and evapo-transpiration data on a daily scale is
used for model calibration and one year data for validation. The performance of the different spatial
interpolation methods were assessed based on the Mean Annual flow and statistical parameters like NashSutcliffe
Efficiency, coefficient of determination. The ordinary kriging and IDW methods were found to be
satisfactory in the spatial interpolation of rainfall.
A study confined to the lower tapi basin in Gujarat, India to find out the primary causes for 2006 floods in Surat city. The study involves collection of topographical data from the local geological survey organization, rainfall data from meteorological department of india and the application of HEC-HMS software from US Army corps of engineers to identify the primary cause of the runoff.
LOWERING GROUNDWATER IN THE ARCHAELOGICAL BABYLON CITY USING UNDERGROUND DAMS IAEME Publication
In this study a mathematical model used to simulate the groundwater lowering in the Ancient Babylon City, located 90 kilometres south of the capital Baghdad, Iraq. The solution proposed within this study is constructing of subground in addition to use 21 discharging wells with (45)m depth
distributed around the study area, which covers about (11) km2 Four scenarios are presented basing on the number and location of subground dams used. For each scenario, wells discharge and time of operation are varied and the results were analyzed. The results showed that installing of subground dam effects significantly groundwater elevations in the studied region and reduce time and efforts required to lower the Ancient Babylon City.
Almost the same as the talk given to Ph.D. students one year ago. It covers the problem of research reproducibility and the tools for doing it. First comes some "theoretical" arguments, then the enumeration of some tools.
Language Combinatorics: A Sentence Pattern Extraction Architecture Based on C...Waqas Tariq
A \"sentence pattern\" in modern Natural Language Processing is often considered as a subsequent string of words (n-grams). However, in many branches of linguistics, like Pragmatics or Corpus Linguistics, it has been noticed that simple n-gram patterns are not sufficient to reveal the whole sophistication of grammar patterns. We present a language independent architecture for extracting from sentences more sophisticated patterns than n-grams. In this architecture a \"sentence pattern\" is considered as n-element ordered combination of sentence elements. Experiments showed that the method extracts significantly more frequent patterns than the usual n-gram approach.
Logistic Loglogistic With Long Term Survivors For Split Population ModelWaqas Tariq
Split population models are also known as mixture model . The data used in this paper is Stanford Heart Transplant data. Survival times of potential heart transplant recipients from their date of acceptance into the Stanford Heart Transplant program [3]. This set consists of the survival times, in days, uncensored and censored for the 103 patients and with 3 covariates are considered Ages of patients in years, Surgery and Transplant, failure for these individuals is death. Covariate methods have been examined quite extensively in the context of parametric survival models for which the distribution of the survival times depends on the vector of covariates associated with each individual. See [6] for approaches which accommodate censoring and covariates in the ordinary exponential model for survival. Currently, such mixture models with immunes and covariates are in use in many areas such as medicine and criminology. See for examples [4][5][7]. In our formulation, the covariates are incorporated into a split loglogistic model by allowing the proportion of ultimate failures and the rate of failure to depend on the covariates and the unknown parameter vectors via logistic model. Within this setup, we provide simple sufficient conditions for the existence, consistency, and asymptotic normality of a maximum likelihood estimator for the parameters involved. As an application of this theory, the likelihood ratio test for a difference in immune proportions is shown to have an asymptotic chi-square distribution. These results allow immediate practical applications on the covariates and also provide some insight into the assumptions on the covariates and the censoring mechanism that are likely to be needed in practice. Our models and analysis are described in section 5.
A Proposed Web Accessibility Framework for the Arab DisabledWaqas Tariq
The Web is providing unprecedented access to information and interaction for people with disabilities. This paper presents a Web accessibility framework which offers the ease of the Web accessing for the disabled Arab users and facilitates their lifelong learning as well. The proposed framework system provides the disabled Arab user with an easy means of access using their mother language so they don’t have to overcome the barrier of learning the target-spoken language. This framework is based on analyzing the web page meta-language, extracting its content and reformulating it in a suitable format for the disabled users. The basic objective of this framework is supporting the equal rights of the Arab disabled people for their access to the education and training with non disabled people. Key Words : Arabic Moon code, Arabic Sign Language, Deaf, Deaf-blind, E-learning Interactivity, Moon code, Web accessibility , Web framework , Web System, WWW.
A Design of fuzzy controller for Autonomous Navigation of Unmanned VehicleWaqas Tariq
The design approach is proposed for fuzzy logic controller for autonomous navigation of a vehicle in an obstacle filled environment. The proposed fuzzy controller is composed obstacle avoidance layer, orientation control layer, passage detection module. Here the fuzzy controller for obstacle avoidance is proposed. It provides a model for multiple sensor input fusion and it is composed of eight individual controllers, each calculating a collision possibility in different directions of movement. By calculating value of collision possibility main controller that performs real-time collision avoidance. The operating frequency & logic cells requirements for different implementation techniques are find out. The designs have been carried out in the digital domain with VHDL using Altera Quartus-II software.
Groundwater Quality Modelling using Coupled Galerkin Finite Element and Modif...AM Publications
This paper presents a coupled Galerkin finite element model for groundwater flow simulation (FEFLOW)
and Modified Method of Characteristics model for the simulation of solute transport (MMOCSOLUTE) in twodimensional,
transient, unconfined groundwater flow systems. The coupling factor is velocity field which is simulated
by finite element technique. The study mainly focuses on groundwater quality aspects hence the flow simulation
model has been kept conventional whereas the solute transport model is improvised by approximating dispersion term.
This coupled model is used to obtain the space and time distribution of head and concentration for the reported
synthetic test case. Further the sensitivity of model results to variation in parameters viz. porosity, dispersivity and
combined injection and pumping rates is analyzed. The model results are compared with the reported solutions of the
model presented by Chiang et al. (1989).
ASSESSING THE EFFECTS OF SPATIAL INTERPOLATION OF RAINFALL ON THE STREAMFLOW ...civej
Precipitation within a river basin varies spatially and temporally and hence, is the most relevant input for
hydrologic modelling. Various interpolation methods exist to distribute rainfall spatially within a basin.
The sparse distribution of raingauge stations within a river basin and the differences in interpolation
methods can potentially impact the streamflow simulated using a hydrologic model. The present study
focuses on assessing the effect of spatial interpolation of rainfall using Theissen polygon, Inverse distance
weighted (IDW) method and Ordinary Kriging on the streamflow simulated using a physically based
spatially distributed model-SHETRAN in Vamanapuram river basin in Southern Kerala, India. The
SHETRAN model in the present study utilises rainfall data from the available rain gauge stations within the
basin and potential evapo-transpiration calculated using Penman-Monteith method, along with other input
parameters like soil and landuse. Four years of rainfall and evapo-transpiration data on a daily scale is
used for model calibration and one year data for validation. The performance of the different spatial
interpolation methods were assessed based on the Mean Annual flow and statistical parameters like NashSutcliffe
Efficiency, coefficient of determination. The ordinary kriging and IDW methods were found to be
satisfactory in the spatial interpolation of rainfall.
A study confined to the lower tapi basin in Gujarat, India to find out the primary causes for 2006 floods in Surat city. The study involves collection of topographical data from the local geological survey organization, rainfall data from meteorological department of india and the application of HEC-HMS software from US Army corps of engineers to identify the primary cause of the runoff.
LOWERING GROUNDWATER IN THE ARCHAELOGICAL BABYLON CITY USING UNDERGROUND DAMS IAEME Publication
In this study a mathematical model used to simulate the groundwater lowering in the Ancient Babylon City, located 90 kilometres south of the capital Baghdad, Iraq. The solution proposed within this study is constructing of subground in addition to use 21 discharging wells with (45)m depth
distributed around the study area, which covers about (11) km2 Four scenarios are presented basing on the number and location of subground dams used. For each scenario, wells discharge and time of operation are varied and the results were analyzed. The results showed that installing of subground dam effects significantly groundwater elevations in the studied region and reduce time and efforts required to lower the Ancient Babylon City.
Almost the same as the talk given to Ph.D. students one year ago. It covers the problem of research reproducibility and the tools for doing it. First comes some "theoretical" arguments, then the enumeration of some tools.
Language Combinatorics: A Sentence Pattern Extraction Architecture Based on C...Waqas Tariq
A \"sentence pattern\" in modern Natural Language Processing is often considered as a subsequent string of words (n-grams). However, in many branches of linguistics, like Pragmatics or Corpus Linguistics, it has been noticed that simple n-gram patterns are not sufficient to reveal the whole sophistication of grammar patterns. We present a language independent architecture for extracting from sentences more sophisticated patterns than n-grams. In this architecture a \"sentence pattern\" is considered as n-element ordered combination of sentence elements. Experiments showed that the method extracts significantly more frequent patterns than the usual n-gram approach.
Logistic Loglogistic With Long Term Survivors For Split Population ModelWaqas Tariq
Split population models are also known as mixture model . The data used in this paper is Stanford Heart Transplant data. Survival times of potential heart transplant recipients from their date of acceptance into the Stanford Heart Transplant program [3]. This set consists of the survival times, in days, uncensored and censored for the 103 patients and with 3 covariates are considered Ages of patients in years, Surgery and Transplant, failure for these individuals is death. Covariate methods have been examined quite extensively in the context of parametric survival models for which the distribution of the survival times depends on the vector of covariates associated with each individual. See [6] for approaches which accommodate censoring and covariates in the ordinary exponential model for survival. Currently, such mixture models with immunes and covariates are in use in many areas such as medicine and criminology. See for examples [4][5][7]. In our formulation, the covariates are incorporated into a split loglogistic model by allowing the proportion of ultimate failures and the rate of failure to depend on the covariates and the unknown parameter vectors via logistic model. Within this setup, we provide simple sufficient conditions for the existence, consistency, and asymptotic normality of a maximum likelihood estimator for the parameters involved. As an application of this theory, the likelihood ratio test for a difference in immune proportions is shown to have an asymptotic chi-square distribution. These results allow immediate practical applications on the covariates and also provide some insight into the assumptions on the covariates and the censoring mechanism that are likely to be needed in practice. Our models and analysis are described in section 5.
A Proposed Web Accessibility Framework for the Arab DisabledWaqas Tariq
The Web is providing unprecedented access to information and interaction for people with disabilities. This paper presents a Web accessibility framework which offers the ease of the Web accessing for the disabled Arab users and facilitates their lifelong learning as well. The proposed framework system provides the disabled Arab user with an easy means of access using their mother language so they don’t have to overcome the barrier of learning the target-spoken language. This framework is based on analyzing the web page meta-language, extracting its content and reformulating it in a suitable format for the disabled users. The basic objective of this framework is supporting the equal rights of the Arab disabled people for their access to the education and training with non disabled people. Key Words : Arabic Moon code, Arabic Sign Language, Deaf, Deaf-blind, E-learning Interactivity, Moon code, Web accessibility , Web framework , Web System, WWW.
A Design of fuzzy controller for Autonomous Navigation of Unmanned VehicleWaqas Tariq
The design approach is proposed for fuzzy logic controller for autonomous navigation of a vehicle in an obstacle filled environment. The proposed fuzzy controller is composed obstacle avoidance layer, orientation control layer, passage detection module. Here the fuzzy controller for obstacle avoidance is proposed. It provides a model for multiple sensor input fusion and it is composed of eight individual controllers, each calculating a collision possibility in different directions of movement. By calculating value of collision possibility main controller that performs real-time collision avoidance. The operating frequency & logic cells requirements for different implementation techniques are find out. The designs have been carried out in the digital domain with VHDL using Altera Quartus-II software.
This study presents an improvement to the Brent¡¯s Method by reconstruction. The Brent¡¯s Method determines the next iteration interval from two subsections, whereas the new method determines the next iteration interval from three subsections constructed by four given points and thus can greatly reduce the iteration interval length. The new method not only gets more readable but also converges faster. An experiment is made to investigate its performance. Results show that, after simplification, the computational efficiency can greatly be improved.
Using Met-modeling Graph Grammars and R-Maude to Process and Simulate LRN ModelsWaqas Tariq
Nowadays, code mobility technology is one of the most attractive research domains. Numerous domains are concerned, many platforms are developed and interest applications are realized. However, the poorness of modeling languages to deal with code mobility at requirement phase has incited to suggest new formalisms. Among these, we find Labeled Reconfigurable Nets (LRN) [9], This new formalism allows explicit modeling of computational environments and processes mobility between them. it allows, in a simple and an intuitive approach, modeling mobile code paradigms (mobile agent, code on demand, remote evaluation). In this paper, we propose an approach based on the combined use of Meta-modeling and Graph Grammars to automatically generate a visual modeling tool for LRN for analysis and simulation purposes. In our approach, the UML Class diagram formalism is used to define a meta-model of LRN. The meta-modeling tool ATOM3 is used to generate a visual modeling tool according to the proposed LRN meta-model. We have also proposed a graph grammar to generate R-Maude [22] specification of the graphically specified LRN models. Then the reconfigurable rewriting logic language R-Maude is used to perform the simulation of the resulted R-Maude specification. Our approach is illustrated through examples.
Institutional Investors Heterogeneity And Earnings Management: The R&D Invest...Waqas Tariq
This study examines the association between different institutional investors\' ownership and earnings management practice through R&D expenditures. It investigates this relationship for a sample of 123 US firms. We examine also the effect of institutional ownership on earnings management of firms having different information environment (S&P 500 versus non S&P 500). Results show that while investment funds exacerbate earnings management by encouraging managers to limit R & D expenditures, pension funds and banks follow passive behaviors. Moreover, the hypothesis of the relevance of the environment information in the explanation of the institutional investors’ behavior seems to be important in our case.
Domain Specific Named Entity Recognition Using Supervised ApproachWaqas Tariq
This paper introduces Named Entity Recognition approach for textual corpus. Supervised Statistical methods are used to develop our system. Our system can be used to categorize NEs belonging to a particular domain for which it is being trained. As Named Entities appears in text surrounded by contexts (words that are left or right of the NE), we will be focusing on extracting NE contexts from text and then perform statistical computing on them. We are using n-gram modeling for extracting contexts from text. Our methodology first extracts left and right tri-grams surrounding NE instances in the training corpus and calculate their probabilities. Then all the extracted tri-grams along with their calculated probabilities are stored in a file. During testing, system detects unrecognized NEs in the testing corpus and categorize them using the tri-gram probabilities calculated during training time. The proposed system consists of two modules namely Knowledge acquisition and NE Recognition. Knowledge acquisition module extracts the tri-grams surrounding NEs in the training corpus and NE Recognition module performs the categorization of Named Entities in the testing corpus.
Application of Mobile Technology in Waste CollectionWaqas Tariq
One of the stages in waste management is waste collection, and as global waste generation continue to increase year after year, the need for better and more efficient waste disposal, collection and management methods become more evident and urgent. Automated forms of waste collection are very expensive and far from being affordable in many low income communities, especially in the so called developing countries. To solve this dilemma, mobile technologies are considered for use in waste collection as a prospective means of improving waste management. This paper is an attempt to proffer a generic but yet concrete and efficient solution to the problems associated with waste collection via the application of mobile technologies, firstly, by tackling the problems individually in form of subsystems and then, through integration of the subsystems together.
Dynamic Construction of Telugu Speech Corpus for Voice Enabled Text EditorWaqas Tariq
In recent decades speech interactive systems have gained increasing importance. Performance of an ASR system mainly depends on the availability of large corpus of speech. The conventional method of building a large vocabulary speech recognizer for any language uses a top-down approach to speech. This approach requires large speech corpus with sentence or phoneme level transcription of the speech utterances. The transcriptions must also include different speech order so that the recognizer can build models for all the sounds present. But, for Telugu language, because of its complex nature, a very large, well annotated speech database is very difficult to build. It is very difficult, if not impossible, to cover all the words of any Indian language, where each word may have thousands and millions of word forms. A significant part of grammar that is handled by syntax in English (and other similar languages) is handled within morphology in Telugu. Phrases including several words (that is, tokens) in English would be mapped on to a single word in Telugu.Telugu language is phonetic in nature in addition to rich in morphology. That is why the speech technology developed for English cannot be applied to Telugu language. This paper highlights the work carried out in an attempt to build a voice enabled text editor with capability of automatic term suggestion. Main claim of the paper is the recognition enhancement process developed by us for suitability of highly inflecting, rich morphological languages. This method results in increased speech recognition accuracy with very much reduction in corpus size. It also adapts Telugu words to the database dynamically, resulting in growth of the corpus.
Cloud-Based Environmental Impact Assessment Expert System – A Case Study of FijiWaqas Tariq
Environmental impact assessments [EIA] involve identifying, measuring, and assessing impacts. This complex process deals with considerable amount of information and requires processing and analysis of quantitative data, qualitative information as well as expert human judgements. Often, available information is incomplete, subjective, and inconsistent. This challenge of collecting, processing, analyzing, and reporting EIA information can be met by computer systems. A Cloud-based Environmental Impact Assessment [EIA] system is proposed in this paper to overcome the many challenges faced by practitioners. Fiji’s EIA process is used as a case study. The steps involved in the process are automated as a sequence of computer executable programs with Expert System. Based on the information provided about projects, the EIA system is expected to compute environmental impacts and produce Environment Impact Statements. With the system, a user enters information about the environmental settings in which the development project is expected to take place as well as the proposed development project activities. Based on the input, an expert system with an inference engine uses rules to check the knowledge base and report on possible impacts and mitigation actions. The knowledge base is connected to databases on domain experts, GIS and simulation models.
Real Time Blinking Detection Based on Gabor FilterWaqas Tariq
New method of blinking detection is proposed. The utmost important of blinking detections method is robust against different users, noise, and also change of eye shape. In this paper, we propose blinking detections method by measuring of distance between two arcs of eye (upper part and lower part). We detect eye arcs by apply Gabor filter onto eye image. As we know that Gabor filter has advantage on image processing application since it able to extract spatial localized spectral features, such line, arch, and other shape are more easily detected. After two of eye arcs are detected, we measure the distance between both by using connected labeling method. The open eye is marked by the distance between two arcs is more than threshold and otherwise, the closed eye is marked by the distance less than threshold. The experiment result shows that our proposed method robust enough against different users, noise, and eye shape changes with perfectly accuracy.
Impact of Defence Offsets On The Companies of The Participating Industry - A ...Waqas Tariq
The knowledge about the connection between purchases of equipment and offset obligations is almost unknown in many areas of the economy. The requests for this offsets occurs primarily in the area of arms imports and covers the full range of benefits that firms provide to the buying governments as inducements for the purchase of military equipment. For those companies which participate for the first time in such offset programs, is it very limited to inform on the effects of offsets. So it is necessary to provide information about the impact of offset for the companies of the participating industry. This examination was triggered through an overall research project on the impact of offsets on the business processes of SMEs. During the necessary Pre-Study for this research project first indications appear that the impact of offset is often not known by the affected companies. The purpose of this paper is to analyze the generic impact of offset for the affected companies with the help of a case study examination. The data for this examination were obtained from secondary sources. After data collection, an analysis was performed on the chosen case studies: Switzerland and Malaysia. This analyzes shows that offset has a wide range impact for the companies.
General Principles of User Interface Design and WebsitesWaqas Tariq
User Interfaces have gone a major transformation since 1970s, all this was possible because of the advances in HCI and related technologies. The Principles of User Interface design has contributed much to the change that we see in the present day user interfaces and predominantly the web interfaces of various websites. This paper presents the various General Principles of User Interface Design and their relevance for present day web interfaces with full length analysis. Each principle is investigated over five different types of web interfaces with 30 different websites per type. The various properties that contribute to the principles have been investigated thoroughly and their statistical values are reported in their entirety
Design Auto Adjust Sliding Surface Slope: Applied to Robot ManipulatorWaqas Tariq
The main target in this paper is to present the nonlinear methods in order to control the robot manipulators and also the related results. Also the important role of sliding surface slope in sliding mode fuzzy control of robot manipulator should be considered. Sliding mode controller (SMC) is a significant nonlinear controller in certain and uncertain dynamic parameters systems. To solve the chattering phenomenon, this paper complicated two methods to each other; boundary layer method and applied fuzzy logic in sliding mode methodology. To remove the chattering sliding surface slope also played important role so this paper focused on the auto tuning this important coefficient to have the best results by applied mathematical model free methodology. Auto tuning methodology has acceptable performance in presence of uncertainty (e.g., overshoot=0%, rise time=0.8 s, steady state error = 1e-9 and RMS error=0.0001632).
V/F Control of Squirrel Cage Induction Motor Drives Without Flux or Torque Me...Waqas Tariq
Based on the popular constant volts per hertz principle, two improvement techniques are presented: keeping maximum torque constant or keeping magnetic flux constant. An open-loop inverter-three-phase squirrel-cage induction motor drive system that provides constant maximum torque or increased maximum torque and reduced slip speed at frequencies below the nominal frequency has been modeled, simulated and tested. Load performance analysis of the proposed system under different operation conditions was provided. These principles of operation are extended to the case of operation from variable frequency or variable voltage control method. Finally, the effects of the non-sinusoidal voltage and/or current wave shapes are covered. The results show that both suggested improvement techniques (constant torque or constant flux) improve the steady-state performance A.C. drive system with squirrel cage induction motors. The slip speed has been decreased and the starting torque and maximum torque have been increased, which means that the suggested control techniques can be used in drive systems with short time operating mode under light loads.
Anonymization techniques are used to ensure the privacy preservation of the data owners, especially for personal and sensitive data. While in most cases, data reside inside the database management system; most of the proposed anonymization techniques operate on and anonymize isolated datasets stored outside the DBMS. Hence, most of the desired functionalities of the DBMS are lost, e.g., consistency, recoverability, and efficient querying. In this paper, we address the challenges involved in enforcing the data privacy inside the DBMS. We implement the k-anonymity algorithm as a relational operator that interacts with other query operators to apply the privacy requirements while querying the data. We study anonymizing a single table, multiple tables, and complex queries that involve multiple predicates. We propose several algorithms to implement the anonymization operator that allow efficient non-blocking and pipelined execution of the query plan. We introduce the concept of k-anonymity view as an abstraction to treat k-anonymity (possibly, with multiple k preferences) as a relational view over the base table(s). For non-static datasets, we introduce the materialized k-anonymity views to ensure preserving the privacy under incremental updates. A prototype system is realized based on PostgreSQL with extended SQL and new relational operators to support anonymity views. The prototype system demonstrates how anonymity views integrate with other privacy- preserving components, e.g., limited retention, limited disclosure, and privacy policy management. Our experiments, on both synthetic and real datasets, illustrate the performance gain from the anonymity views as well as the proposed query optimization techniques under various scenarios.
The use of Cellular Automata is extended in various disciplines for the modeling of complex system procedures. Their inherent simplicity and their natural parallelism make them a very efficient tool for the simulation of large scale physical phenomena. We explore the framework of Cellular Automata to develop a physically based model for the spatial and temporal prediction of shallow landslides. Particular weight is given to the modeling of hydrological processes in order to investigate the hydrological triggering mechanisms and the importance of continuous modeling of water balance to detect timing and location of soil slips occurrences. Specifically, the 3D flow of water and the resulting water balance in the unsaturated and saturated zone is modeled taking into account important phenomena such as hydraulic hysteresis and evapotranspiration. In this poster the hydrological component of the model will be presented and tested against well established benchmark experiments [Vauclin et al, 1975; Vauclin et al, 1979]. Furthermore, we investigate the applicability of incorporating it in a hydrological catchment model for the prediction (temporal and spatial) of rainfall-triggered shallow landslides.
The Effect of Geometry Parameters and Flow Characteristics on Erosion and Sed...Dr. Amarjeet Singh
One of the most critical problems in the river
engineering field is scouring, sedimentation and morphology
of a river bed. In this paper, a finite volume method
FORTRAN code is provided and used. The code is able to
model the sedimentation. The flow and sediment were
modeled at the interception of the two channels. It is applied
an experimental model to evaluate the results. Regarding the
numerical model, the effects of geometry parameters such as
proportion of secondary channel to main channel width and
intersection angle and also hydraulic conditionals like
secondary to main channel discharge ratio and inlet flow
Froude number were studied on bed topographical and flow
pattern. The numerical results show that the maximum
height of bed increased to 32 percent as the discharge ratio
reaches to 51 percent, on average. It is observed that the
maximum height of sedimentation decreases by declining in
main channel to secondary channel Froude number ratio. On
the assessment of the channel width, velocity and final bed
height variations have changed by given trend, in all the
ratios. Also, increasing in the intersection angle accompanied
by decreasing in flow velocity variations along the channel.
The pattern of velocity and topographical bed variations are
also constant in any studied angles.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology
Mesoscopic simulation of incompressible fluid flow in porous mediaeSAT Journals
Abstract
Lattice Boltzmann method is used to simulate cavity driven fluid flow in porous media. A square cavity is considered with the top
lid moving with uniform velocity and other sides kept stationary. Simulation is carried out for values of Darcy number ranging
from 10-6 to10-2 at Reynolds number 10 and 100. Influence of Darcy number and Reynolds number is investigated on velocity
profiles and the streamline plots. Half-way bounce back boundary conditions are employed in the numerical simulation. The
numerical code is first verified with the results available in the literature and then used to simulate the Newtonian fluid flow in
porous media. The Darcy number and the Reynolds number were observed to have great influence on the flow properties and the
location of the primary vortex. Simulation was carried out for a 100100 mesh grid and a fine agreement is established theories
in incompressible fluid flow.
Keywords: Lattice Boltzmann method, incompressible flow, porous media
This project aims at simulating lid driven cavity flow problem using package MATLAB. Steady Incompressible Navier-Stokes equation with continuity equation will be studied at various Reynolds number. The main aim is to obtain the velocity field in steady state using the finite difference formulation on momentum equations and continuity equation. Reynold number is the pertinent parameter of the present study. Taylor’s series expansion has been used to convert the governing equations in the algebraic form using finite difference schemes.
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
LATTICE BOLTZMANN SIMULATION OF NON-NEWTONIAN FLUID FLOW IN A LID DRIVEN CAVITY IAEME Publication
Lattice Boltzmann Method (LBM) is used to simulate the lid driven cavity flow to explore the mechanism of non-Newtonian fluid flow. The power law model is used to represent the class of non-Newtonian fluids (shear-thinning and shear-thickening fluids) by considering a range of 0.8 to 1.6. Investigation is carried out to study the influence of power law index and Reynolds number on the variation of velocity profiles and streamlines plots. Velocity profiles and the streamline patterns
for various values of power law index at Reynolds numbers ranging 100 to 3200 are presented. Half way bounce back boundary conditions are employed in the numerical method.
journal of engineering and applied science 18.pdfnareshkotra
The International Journal of Mechanical Engineering Research and Technology is an international online journal in English published Quarterly offers a speed publication schedule with whilst maintaining rigorous peer review and the use of recommended electronic formats for article delivery of expedites the process of All submitted research articles are subjected to immediate rapid screening by the editors consultation with the Editorial Board or others working in the field as appropriate to ensure that they are as same as to be the level of interest and importance appropriate for the journal.
journal of applied science and engineering.pdfnareshkotra
The International Journal of Mechanical Engineering Research and Technology is an international online journal in English published Quarterly offers a fast publication schedule with maintaining rigorous peer review and the use of recommended electronic formats of article delivery expedites the process of All submitted research articles are subjected to immediate rapid screening by the editors consultation with the Editorial Board or others working in the field of appropriate to ensure that they are likely to be the level of interest and importance of appropriate for the journal.
In the framework of mathematical morphology, watershed transform (WT) represents a key step in image segmentation procedure. In this paper, we present a thorough analysis of some existing watershed approaches in the discrete case: WT based on flooding, WT based on path-cost minimization, watershed based on topology preservation, WT based on local condition and WT based on minimum spanning forest. For each approach, we present detailed description of processing procedure followed by mathematical foundations and algorithm of reference. Recent publications based on some approaches are also presented and discussed. Our study concludes with a classification of different watershed transform algorithms according to solution uniqueness, topology preservation, prerequisites minima computing and linearity.
The Use of Java Swing’s Components to Develop a WidgetWaqas Tariq
Widget is a kind of application provides a single service such as a map, news feed, simple clock, battery-life indicators, etc. This kind of interactive software object has been developed to facilitate user interface (UI) design. A user interface (UI) function may be implemented using different widgets with the same function. In this article, we present the widget as a platform that is generally used in various applications, such as in desktop, web browser, and mobile phone. We also describe a visual menu of Java Swing’s components that will be used to establish widget. It will assume that we have successfully compiled and run a program that uses Swing components.
3D Human Hand Posture Reconstruction Using a Single 2D ImageWaqas Tariq
Passive sensing of the 3D geometric posture of the human hand has been studied extensively over the past decade. However, these research efforts have been hampered by the computational complexity caused by inverse kinematics and 3D reconstruction. In this paper, our objective focuses on 3D hand posture estimation based on a single 2D image with aim of robotic applications. We introduce the human hand model with 27 degrees of freedom (DOFs) and analyze some of its constraints to reduce the DOFs without any significant degradation of performance. A novel algorithm to estimate the 3D hand posture from eight 2D projected feature points is proposed. Experimental results using real images confirm that our algorithm gives good estimates of the 3D hand pose. Keywords: 3D hand posture estimation; Model-based approach; Gesture recognition; human- computer interface; machine vision.
Camera as Mouse and Keyboard for Handicap Person with Troubleshooting Ability...Waqas Tariq
Camera mouse has been widely used for handicap person to interact with computer. The utmost important of the use of camera mouse is must be able to replace all roles of typical mouse and keyboard. It must be able to provide all mouse click events and keyboard functions (include all shortcut keys) when it is used by handicap person. Also, the use of camera mouse must allow users troubleshooting by themselves. Moreover, it must be able to eliminate neck fatigue effect when it is used during long period. In this paper, we propose camera mouse system with timer as left click event and blinking as right click event. Also, we modify original screen keyboard layout by add two additional buttons (button “drag/ drop” is used to do drag and drop of mouse events and another button is used to call task manager (for troubleshooting)) and change behavior of CTRL, ALT, SHIFT, and CAPS LOCK keys in order to provide shortcut keys of keyboard. Also, we develop recovery method which allows users go from camera and then come back again in order to eliminate neck fatigue effect. The experiments which involve several users have been done in our laboratory. The results show that the use of our camera mouse able to allow users do typing, left and right click events, drag and drop events, and troubleshooting without hand. By implement this system, handicap person can use computer more comfortable and reduce the dryness of eyes.
Computer Input with Human Eyes-Only Using Two Purkinje Images Which Works in ...Waqas Tariq
A method for computer input with human eyes-only using two Purkinje images which works in a real time basis without calibration is proposed. Experimental results shows that cornea curvature can be estimated by using two light sources derived Purkinje images so that no calibration for reducing person-to-person difference of cornea curvature. It is found that the proposed system allows usersf movements of 30 degrees in roll direction and 15 degrees in pitch direction utilizing detected face attitude which is derived from the face plane consisting three feature points on the face, two eyes and nose or mouth. Also it is found that the proposed system does work in a real time basis.
Toward a More Robust Usability concept with Perceived Enjoyment in the contex...Waqas Tariq
Mobile multimedia service is relatively new but has quickly dominated people¡¯s lives, especially among young people. To explain this popularity, this study applies and modifies the Technology Acceptance Model (TAM) to propose a research model and conduct an empirical study. The goal of study is to examine the role of Perceived Enjoyment (PE) and what determinants can contribute to PE in the context of using mobile multimedia service. The result indicates that PE is influencing on Perceived Usefulness (PU) and Perceived Ease of Use (PEOU) and directly Behavior Intention (BI). Aesthetics and flow are key determinants to explain Perceived Enjoyment (PE) in mobile multimedia usage.
Collaborative Learning of Organisational KnolwedgeWaqas Tariq
This paper presents recent research into methods used in Australian Indigenous Knowledge sharing and looks at how these can support the creation of suitable collaborative envi- ronments for timely organisational learning. The protocols and practices as used today and in the past by Indigenous communities are presented and discussed in relation to their relevance to a personalised system of knowledge sharing in modern organisational cultures. This research focuses on user models, knowledge acquisition and integration of data for constructivist learning in a networked repository of or- ganisational knowledge. The data collected in the repository is searched to provide collections of up-to-date and relevant material for training in a work environment. The aim is to improve knowledge collection and sharing in a team envi- ronment. This knowledge can then be collated into a story or workflow that represents the present knowledge in the organisation.
Our research aims to propose a global approach for specification, design and verification of context awareness Human Computer Interface (HCI). This is a Model Based Design approach (MBD). This methodology describes the ubiquitous environment by ontologies. OWL is the standard used for this purpose. The specification and modeling of Human-Computer Interaction are based on Petri nets (PN). This raises the question of representation of Petri nets with XML. We use for this purpose, the standard of modeling PNML. In this paper, we propose an extension of this standard for specification, generation and verification of HCI. This extension is a methodological approach for the construction of PNML with Petri nets. The design principle uses the concept of composition of elementary structures of Petri nets as PNML Modular. The objective is to obtain a valid interface through verification of properties of elementary Petri nets represented with PNML.
Development of Sign Signal Translation System Based on Altera’s FPGA DE2 BoardWaqas Tariq
The main aim of this paper is to build a system that is capable of detecting and recognizing the hand gesture in an image captured by using a camera. The system is built based on Altera’s FPGA DE2 board, which contains a Nios II soft core processor. Image processing techniques and a simple but effective algorithm are implemented to achieve this purpose. Image processing techniques are used to smooth the image in order to ease the subsequent processes in translating the hand sign signal. The algorithm is built for translating the numerical hand sign signal and the result are displayed on the seven segment display. Altera’s Quartus II, SOPC Builder and Nios II EDS software are used to construct the system. By using SOPC Builder, the related components on the DE2 board can be interconnected easily and orderly compared to traditional method that requires lengthy source code and time consuming. Quartus II is used to compile and download the design to the DE2 board. Then, under Nios II EDS, C programming language is used to code the hand sign translation algorithm. Being able to recognize the hand sign signal from images can helps human in controlling a robot and other applications which require only a simple set of instructions provided a CMOS sensor is included in the system.
An overview on Advanced Research Works on Brain-Computer InterfaceWaqas Tariq
A brain–computer interface (BCI) is a proficient result in the research field of human- computer synergy, where direct articulation between brain and an external device occurs resulting in augmenting, assisting and repairing human cognitive. Advanced works like generating brain-computer interface switch technologies for intermittent (or asynchronous) control in natural environments or developing brain-computer interface by Fuzzy logic Systems or by implementing wavelet theory to drive its efficacies are still going on and some useful results has also been found out. The requirements to develop this brain machine interface is also growing day by day i.e. like neuropsychological rehabilitation, emotion control, etc. An overview on the control theory and some advanced works on the field of brain machine interface are shown in this paper.
Exploring the Relationship Between Mobile Phone and Senior Citizens: A Malays...Waqas Tariq
There is growing ageing phenomena with the rise of ageing population throughout the world. According to the World Health Organization (2002), the growing ageing population indicates 694 million, or 223% is expected for people aged 60 and over, since 1970 and 2025.The growth is especially significant in some advanced countries such as North America, Japan, Italy, Germany, United Kingdom and so forth. This growing older adult population has significantly impact the social-culture, lifestyle, healthcare system, economy, infrastructure and government policy of a nation. However, there are limited research studies on the perception and usage of a mobile phone and its service for senior citizens in a developing nation like Malaysia. This paper explores the relationship between mobile phones and senior citizens in Malaysia from the perspective of a developing country. We conducted an exploratory study using contextual interviews with 5 senior citizens of how they perceive their mobile phones. This paper reveals 4 interesting themes from this preliminary study, in addition to the findings of the desirable mobile requirements for local senior citizens with respect of health, safety and communication purposes. The findings of this study bring interesting insight to local telecommunication industries as a whole, and will also serve as groundwork for more in-depth study in the future.
Principles of Good Screen Design in WebsitesWaqas Tariq
Visual techniques for proper arrangement of the elements on the user screen have helped the designers to make the screen look good and attractive. Several visual techniques emphasize the arrangement and ordering of the screen elements based on particular criteria for best appearance of the screen. This paper investigates few significant visual techniques in various web user interfaces and showcases the results for better understanding and their presence.
Virtual teams are used more and more by companies and other organizations to receive benefits. They are a great way to enable teamwork in situations where people are not sitting in the same physical place at the same time. As companies seek to increase the use of virtual teams, a need exists to explore the context of these teams, the virtuality of a team and software that may help these teams working virtualy. Virtual teams have the same basic principles as traditional teams, but there is one big difference. This difference is the way the team members communicate. Instead of using the dynamics of in-office face-to-face exchange, they now rely on special communication channels enabled by modern technologies, such as e-mails, faxes, phone calls and teleconferences, virtual meetings etc. This is why this paper is focused on the issues regarding virtual teams, and how these teams are created and progressing in Albania.
Cognitive Approach Towards the Maintenance of Web-Sites Through Quality Evalu...Waqas Tariq
It is a well established fact that the Web-Applications require frequent maintenance because of cutting– edge business competitions. The authors have worked on quality evaluation of web-site of Indian ecommerce domain. As a result of that work they have made a quality-wise ranking of these sites. According to their work and also the survey done by various other groups Futurebazaar web-site is considered to be one of the best Indian e-shopping sites. In this research paper the authors are assessing the maintenance of the same site by incorporating the problems incurred during this evaluation. This exercise gives a real world maintainability problem of web-sites. This work will give a clear picture of all the quality metrics which are directly or indirectly related with the maintainability of the web-site.
USEFul: A Framework to Mainstream Web Site Usability through Automated Evalua...Waqas Tariq
A paradox has been observed whereby web site usability is proven to be an essential element in a web site, yet at the same time there exist an abundance of web pages with poor usability. This discrepancy is the result of limitations that are currently preventing web developers in the commercial sector from producing usable web sites. In this paper we propose a framework whose objective is to alleviate this problem by automating certain aspects of the usability evaluation process. Mainstreaming comes as a result of automation, therefore enabling a non-expert in the field of usability to conduct the evaluation. This results in reducing the costs associated with such evaluation. Additionally, the framework allows the flexibility of adding, modifying or deleting guidelines without altering the code that references them since the guidelines and the code are two separate components. A comparison of the evaluation results carried out using the framework against published evaluations of web sites carried out by web site usability professionals reveals that the framework is able to automatically identify the majority of usability violations. Due to the consistency with which it evaluates, it identified additional guideline-related violations that were not identified by the human evaluators.
Robot Arm Utilized Having Meal Support System Based on Computer Input by Huma...Waqas Tariq
A robot arm utilized having meal support system based on computer input by human eyes only is proposed. The proposed system is developed for handicap/disabled persons as well as elderly persons and tested with able persons with several shapes and size of eyes under a variety of illumination conditions. The test results with normal persons show the proposed system does work well for selection of the desired foods and for retrieve the foods as appropriate as usersf requirements. It is found that the proposed system is 21% much faster than the manually controlled robotics.
An Improved Approach for Word Ambiguity RemovalWaqas Tariq
Word ambiguity removal is a task of removing ambiguity from a word, i.e. correct sense of word is identified from ambiguous sentences. This paper describes a model that uses Part of Speech tagger and three categories for word sense disambiguation (WSD). Human Computer Interaction is very needful to improve interactions between users and computers. For this, the Supervised and Unsupervised methods are combined. The WSD algorithm is used to find the efficient and accurate sense of a word based on domain information. The accuracy of this work is evaluated with the aim of finding best suitable domain of word. Keywords: Human Computer Interaction, Supervised Training, Unsupervised Learning, Word Ambiguity, Word sense disambiguation
Parameters Optimization for Improving ASR Performance in Adverse Real World N...Waqas Tariq
From the existing research it has been observed that many techniques and methodologies are available for performing every step of Automatic Speech Recognition (ASR) system, but the performance (Minimization of Word Error Recognition-WER and Maximization of Word Accuracy Rate- WAR) of the methodology is not dependent on the only technique applied in that method. The research work indicates that, performance mainly depends on the category of the noise, the level of the noise and the variable size of the window, frame, frame overlap etc is considered in the existing methods. The main aim of the work presented in this paper is to use variable size of parameters like window size, frame size and frame overlap percentage to observe the performance of algorithms for various categories of noise with different levels and also train the system for all size of parameters and category of real world noisy environment to improve the performance of the speech recognition system. This paper presents the results of Signal-to-Noise Ratio (SNR) and Accuracy test by applying variable size of parameters. It is observed that, it is really very hard to evaluate test results and decide parameter size for ASR performance improvement for its resultant optimization. Hence, this study further suggests the feasible and optimum parameter size using Fuzzy Inference System (FIS) for enhancing resultant accuracy in adverse real world noisy environmental conditions. This work will be helpful to give discriminative training of ubiquitous ASR system for better Human Computer Interaction (HCI). Keywords: ASR Performance, ASR Parameters Optimization, Multi-Environmental Training, Fuzzy Inference System for ASR, ubiquitous ASR system, Human Computer Interaction (HCI)
Interface on Usability Testing Indonesia Official Tourism WebsiteWaqas Tariq
Ministry of Tourism and Creative Economy of The Republic of Indonesia must meet the wide audience various needs and should reach people from all levels of society around the world to provide Indonesia tourism and travel information. This article will gives the details in the evolution of one important component of Indonesia Official Tourism Website as it has grown in functionality and usefulness over several years of use by a live, unrestricted community. We chose this website to see the website interface design and usability and to popularize Indonesia tourism and travel highlights. The analysis done by looking at the criteria specified for usability testing. Usability testing measures are the ease of use (effectiveness, efficiency, consistency and interface design), easy to learn, errors and syntax which is related to the human computer interaction. The purpose of this article is to test the usability level of the website, analyze the website interface design, and provide suggestions for improvements in Indonesia Official Tourism Website of analysis we have done before.
Monitoring and Visualisation Approach for Collaboration Production Line Envir...Waqas Tariq
In this paper, a tool, called SPMonitor, to monitor and visualize of run-time execution productive processes is proposed. SPMonitor enables dynamically visualizing and monitoring workflows running in a system. It displays versatile information about currently executed workflows providing better understanding about processes and the general functionality of the domain. Moreover, SPMonitor enhances cooperation between different stakeholders by offering extensive communication and problem solving features that allow actors concerned to react more efficiently to different anomalies that may occur during a workflow execution. The ideas discussed are validated through the study of real case related to airbus assembly lines.
Hand Segmentation Techniques to Hand Gesture Recognition for Natural Human Co...Waqas Tariq
This work is the part of vision based hand gesture recognition system for Natural Human Computer Interface. Hand tracking and segmentation are the primary steps for any hand gesture recognition system. The aim of this paper is to develop robust and efficient hand segmentation algorithm where three algorithms for hand segmentation using different color spaces with required morphological processing have were utilized. Hand tracking and segmentation algorithm (HTS) is found to be most efficient to handle the challenges of vision based system such as skin color detection, complex background removal and variable lighting condition. Noise may contain, sometime, in the segmented image due to dynamic background. An edge traversal algorithm was developed and applied on the segmented hand contour for removal of unwanted background noise.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
How to Create Map Views in the Odoo 17 ERPCeline George
The map views are useful for providing a geographical representation of data. They allow users to visualize and analyze the data in a more intuitive manner.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
New Approach of Prediction of Sidoarjo Hot Mudflow Disastered Area Based on Probabilistic Cellular Automata
1. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 1
New Approach of Prediction of Sidoarjo Hot Mudflow Disastered
Area Based on Probabilistic Cellular Automata
Kohei Arai arai@is.saga-u.ac.jp
Department of Information Science
Faculty of Science and Engineering, Saga University
Achmad Basuki basuki@eepis-its.edu
Department of Information Science
Faculty of Science and Engineering, Saga University
Electronic Engineering Polytechnic Institute of Surabaya
Abstract
A new approach of prediction of Sidoarjo hot mudflow disaster area using cellular
automata with probabilistic adjustment for minimizing prediction errors is
proposed. Sidoarjo hot mudflow has some characteristics such as occurring in
the urban area, huge-mud plumes, high-viscosity and surface temperature
changes, so that it needs combined approaches of slow debris flow, and material
changes caused by viscous fluid and thermal changes. Some deterministic
approaches can not show the high-state changes. This paper presents a new
approach of cellular automata using probabilistic state changing to simulate hot
mudflow spreading. The model was calibrated with the time series of topological
maps. The experimental results show new inundated areas that are identified as
high-risk areas where are covered with mud. Furthermore, the proposed
probabilistic cellular automata approach works well for prediction of hot mudflow
spreading areas much accurate than the existing conventional methods.
Keywords: Cellular Automata, LUSI, Hot Mudflow, Prediction, Minimization Difference, Probabilistic State
Changing.
1. INTRODUCTION
The occurrence of hot mudflow at Sidoarjo (East Java, Indonesia) has attracted many
researchers from around the world to study its cause, environment effects and the flow behavior.
About 150,000m3/day of hot mud have been coming up from several unexpected location for four
years now [1][2]. The uncontrolled nature of this hot-mud phenomenon may affect the dense
highly populated area with several critical public infrastructures, such as railway, highway,
schools and hospital as shown in Figure 1. It is necessary to estimate the new inundated area
around the disaster area due to minimize disaster damage.
To estimate the new inundated area, several models for simulations have been proposed. For
example, Argentini [3] proposed fluid a flow model, Vicari [4] proposed a lava flow model, and
Ambrossio [5] and Yuan [6] proposed a soil-erosion model using two-dimensional CA. However,
those models lack dynamic-moving parameters, which is necessary to predict the new inundated
location of hot mudflow. With this parameter, it is difficult to develop mathematical equation of
mass transport model using two-dimensional CA because there are many considered
phenomena such as infiltration, thermal surface changing and absorption [7]. When simulations
2. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 2
are based on differential equation methods for solution, predicting the fluid flow on disaster
spreading may meet serious difficulties. Avolio [8] proposed the minimization differences
approach on CA model to simulate lava flow. This approach has dynamical state changing. The
key-point of this approach is easy to develop. The update state algorithm can be developed by
ordinary rules for all lattice condition. This approach show appreciable result to predict lava flow
area, but it is not for water flow. Therefore, combination of water flow and lava flow need some
unknown parameters.
FIGURE 1. LUSI mud Eruption at Sidoarjo, Indonesia (CRISP & Google Map).
The mud characteristic is similar with the lava characteristic, but it contains 70% water as high
viscous fluid. Because the minimization approach is deterministic approach for reach equilibrium
state by average, this condition makes the minimization approach is not powerful to simulate hot
mudflow on LUSI mud eruption disaster, because some possibility mass transports change every
time. A new approach of cellular automata with probability state adjustment is proposed to
simulate hot mudflow with high dynamic mass transports [9]. In this approach, mass transports
depend on not only landslide, mud volume and viscosity but also probability to material changing
as a function of material mixing ratio and surface thermal changing.
Simulation results were obtained by the landscape map using ASTER DEM, and initial
parameters of mud flow such as mud blow volume, viscosity and some probability function of
material changing. This paper shows some simulation result on map view and percentage of
predicting performances. We also show the comparison of predicting on inundated area and
direction with the other previous approach.
2. CELLULAR AUTOMATA APPROACH
CA approach is a discrete dynamical system to explain a complex system such as fluid dynamic,
whose evolution can be described in terms of local interactions [10]. The use of cellular automata
for the representation of the evolution of a phenomenon, natural or not, presents two benefits
respect a possible analytical description [3]. CA model consist of an array of cells, and each cell
contain a limited range of values that are called cell’s state. The cell’s state is updated in discrete
time step according to set of rules. These rules depend on the state of the cell or its neighbors in
3. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 3
current time steps [11].
Cellular Automata (CA) is an alternative approach to standard differential equation method in
modeling complex phenomenon [4]. The use of CA for the representation of the evolution of a
phenomenon, natural or not, presents two benefits respect as possible analytical description [3]:
• the facility of a computational implementation,
• the possibility of avoiding the formulation of a sophisticated mathematical model and/or the
resolution of complicated differential equations, if they have been already found.
FIGURE 2. CA approach for water flow
Some CA approaches were used to simulate complex fluid dynamic with some obstacle and fluid
charateristic such as water flow [3] and lava flow [4][8]. Argentini showed the simple CA approach
to simulate water flow that mass of fluid was assumed by discrete state as shown in figure 2.
Vicari showed more extend CA approach using Newtonian fluid dynamic to simulate lava flow as
viscous fluid. Some differential equation was used of this approach, and it made some difficulties
to develop new phenomenon of fluid dynamic such as absorption.
Avolio introduced a CA approach to simulate viscous fluid is the minimization difference approach
[8]. It is one alternative approach for solve the complex fluid dynamic without sophisticated
mathematical formulation. Another implementation of this method, D’Ambrossio used it to
simulate soil erosion by water [5]. This approach obtains the lava flow spreading with many
parameters such as viscosity and surface thermal changing that are similar with hot mudflow in
this plan. This approach is powerful to simulate fluid flow. The minimization difference approach
has the following instruction to update states:
(a) A is the set of cell not eliminated. Its initial value is set to the number of its neighbors.
(b) The average height is found for the set of A of non-eliminated cells:
1+
+
=
∑
∈
A
Ai
ic
n
hh
m
Where:
hc is height of the center cell.
hi is height of the non-eliminated neighbor cells.
nA is number of non-eliminated neighbor cells.
(c) The cells with height larger than average height are eliminated from A.
(d) Go to step (b) until no cell is to be eliminated.
(e) The flows, which minimize the height differences locally, are such that the new height of the
non-eliminated cell is the value of the average height.
Figure 3 shows an example of two-dimensional CA based on minimization of difference. In this
figure, the final result is flat on average. When the previous state we have 10 elements of solid
material and 7 elements of fluid material, the final state we have 9 elements of solid material. This
approach does not describe the solid or fluid material on the mass transport, although it shows
sediment erosion.
4. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 4
FIGURE 3. Example of minimization of differences in a two dimensional CA.
3. PROPOSED METHODS
The minimization difference approach does not show the mass transport creates direct
equilibrium states as water or low viscous fluid. For example, the characteristic of mass transport
does not change when the unknown variables add to the system such as human built structures.
For this purpose, we use the probability of moving on the neighbor depend on the structure of the
neighbor cells such as mud height, static soil height and dynamic soil height. Static soil is the
ground that can not flow, and dynamic soil is the soil on the surface of soil that have the
possibility to change because erosion. Because of that reason, in this proposed method, we use
three variables on each cell that are static soil, dynamic soil and mud. The height of mud is
written by sij. The height of dynamic soil is written by uij. The height of static soil is written by gij.
Probability of changing from dynamic soil to mud is pm that describe the differences of dynamic
soil in this state. Probability of changing from mud to soil is pvis that depends on the viscosity
value. Figure 4 shows state variables on this simulation and some probability value for material
changing caused by viscous flow.
FIGURE 4. Three state variables
The update rule in this approach is comparable with the minimization rules, but the flow is not
deterministic as minimization rules. We use probability values adjustment pm and pvis to derive
some mass from the center cell to its neighbor cells. To improve the prediction results suggest
controlling of these probability values.
Our proposed approach based on minimization method has the following instruction to update
states and an example of our approach is shown in figure 5:
(a) A is the set of cell not eliminated. Its initial value is set to the number of its neighbors. Each
cell on position (i,j) has two components such as soil and mud. The height of them are gij
and sij. Total height of this cell is: hij = gij + sij. There is dynamic soil uij, but it is the small
portion of soil and we adjust on normal distribution of pm.
(b) The average height is found for the set of A of non-eliminated cells:
( )
1
.
+
++
=
∑
∈
A
Ai
cmic
n
gphh
m
Where:
5. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 5
hc is height of the center cell.
hi is height of the non-eliminated neighbor cells.
nA is number of non-eliminated neighbor cells.
(c) The cells with height larger than average height are eliminated from A.
(d) Go to step (b) until no cell is to be eliminated.
(e) The flows, which minimize the height differences locally, are such that the new height of the
non-eliminated cell changes with difference of fluid material mass transport soil and mud are
△hg and △hs.
In the center cell:
ijvisg gpmh ).1( −−=∆
)1).(.( mijvisij
c
s pgpsh −+=∆
mijvisij pgpsd )..( +=
where d is moving material.
In the neighbors:
d
m
hm
sh
ij
ij
n
s
−
+=∆
FIGURE 5. Proposed approach in a two dimensional CA.
4. MODEL SPECIFICATION
The simulation have purpose to know the inundated area in the future. For this purpose, we use
some map data on February 2008, May 2008 and August 2008 as shown in figure 6. We use
ASTER DEM and IKONOS data for landscape prediction. We compare the simulation result on
one month step and compare it with the real data. The simulation start using map data on
February 2008 as initial map, and predict mudflow inundated area on May 2008 as the short-
period prediction and August 2008 the long-period prediction.
FIGURE 6. Some image maps from IKONOS [12] on February 2008 (left), May 2008 (center) and August
2008 (right).
6. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 6
We use ASTER/DEM map that has resolution 30m×30m. Every image data has image size
approximate 3.705km × 4.036km. When the resolution image is 400×400 pixels, pixel size is
9.2625m×10.09m. It needs to quantize the location/point that contains mud or not for this
simulation. The other data, mud contains 70% water, high viscous and mud blows 100,000-
150,000m3 per day [13]. We adjust volume of blowing, water percentage and two probabilities pm
and pvis to simulate mudflow. This simulation concern to know the location will inundate in the
future.
5. SIMULATION RESULT
On this simulation, we investigate some lattice size to show mudflow spreading characteristic. For
the formulation, we know the differences of this approach and Avolio’s approach is on the
equilibrium state. The Avolio’s approach will require all non-eliminated cells will have the same
height, but it depends on probability value and obtain the final state has a normal distribution
height different in all non-eliminated cells.
Comparison With Real Data
We use three maps to investigate this simulation; real map in May 2008 as target map, prediction
map for May 2008, and overlay map between real map and prediction map. Real-mud area is in
red colored area. Simulation result mud area is in blue colored area. Intersection of real map and
simulation results area is in pink colored area. The simulation result shows same location and
direction with real data on May 2008, but there is some different area in detail that shows in
percentage of intersection new predicted area about 67.78%, this value only for new area and
initial area are not including to determine intersection area as shown in figure 5. We use
30m 30m ASTER/DEM imagery data that can not show some detail map components such as
small building. It is still approximate of detail landscape although we had quantified this map
using the height data on some points. Resolution influence will show in other sub-chapter of this
paper.
FIGURE 7. Real map on May 2008 (left), simulation result (middle) and overlay map (right)
Figure 8 shows the intersection for new inundated area. The percentage of intersection area is
the comparison between the numbers of pixels of pink colored area and all new colored area.
Cellular Automata approach using probabilistic adjustment on Minimization Differences approach
obtains correct location and direction with real data for short-period prediction.
For medium period prediction, we check this approach to predict new inundated area on August
2008. Figure 9 shows the real map on August 2008 on red colored area, simulation result on blue
colored area and comparison the real map and simulation result with intersection area on pink
colored area. Although in mainly result prediction area show same location and direction with real
data, this result is better result that has intersection area 56.54% than previous method using
Fluid Dynamic Cellular Automata approach and Vicari’s approach that have intersection area
36.44% and 36.29% [14].
7. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 7
FIGURE 8. New inundated area and overlay between real data and simulation result
FIGURE 9. Real map on August 2008 (left), simulation result (middle) and overlay map (right)
Lattice Size Analysis
Lattice size analysis show how simulation runs in some resolutions. We use lattice size from
200×200 pixels as lowest resolution to 700×700 pixels as highest resolution. Because CA
approach is a microscopic approach to simulate hot mudflow disaster, this approach needs high
resolution. Figure 10 shows increasing resolution causes increasing prediction performance when
prediction performance is assumed by percentage of intersection area between simulation result
and real data.
Neighbor Size Analysis
One of parameter of Cellular Automata approach is neighborhood, and neighbor size is an
important variable to define neighborhood [15]. Because our model is 2D CA model, there are
three neighbors size on our model: 3×3 Von Newmann, 3×3 Moore and 5×5 Moore. Figure 11
shows three model of neighborhood.
8. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 8
40.00
45.00
50.00
55.00
60.00
65.00
70.00
75.00
80.00
200 250 300 350 400 450 500 550 600 650 700
Lattice Size (Resolution)
Performance(%)
Intersection Area
Intersection Pattern
FIGURE 10. Performance of prediction vs lattice size.
FIGURE 11. Neighborhood model: 3×3 Von Newmann (left), 3×3 Moore (middle) and 5×5 Moore (right)
Figure 12 shows comparison of performance result for each neighbor size, 3×3 and 5×5. Number
of neighbor is one important parameter in our model. Increasing number of neighbor causes
increasing performance of prediction. Although we use same approach, Moore neighborhood has
good performance, but Von Newmann neighborhood has poor performance to predict inundated
area.
40
45
50
55
60
65
70
75
80
85
90
200 300 400 500 600 700 800 900 1000
Lattice Size (Resolution)
IntersectionArea(%)
Von N ewm ann
M oore 3x3
M oore 5x5
FIGURE 12. Neighbor size on each resolution
9. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 9
5.4. Comparison With Other Approach
The other result is comparison between this approach and other approaches on hot mudflow
map. For this result, we select Avolio’s approach and D’Ambrossio‘s approach that have same
characteristic disaster simulation. Figure 13 shows comparison result between Avolio’s approach,
D’Ambrossio’s approach and our approach. All approaches obtain same location and direction,
but in detail our approach has higher percentage of intersection area in detail data.
(a) (b) (c)
FIGURE 13. Comparison D’Ambrossio (a), Avolio’s approach (b) and our approach (c)
For more detail information of comparison, we obtain performance of prediction on each
resolution as shown in figure 14. Because D’Ambrossio’s approach and Avolio’s approach use
Von-Newmann neighborhood, we compare the result with same neighborhood system. In this
comparison, this approach has higher intersection area between predicted area and real area that
D’Ambrossio’s approach and Avolio’s approach. On the previous section, the neighborhood
system that used on this comparison is the poor neighborhood system in this approach, but the
number of intersection area still higher than other approaches.
30.000
35.000
40.000
45.000
50.000
55.000
60.000
65.000
70.000
200 300 400 500 600 700 800 900 1000
Resolution
IntersectionArea(%)
D'Am brossio's Approach
Avolio's Approach
O ur Approach
FIGURE 14. Comparison performance our approach and other approach
10. Kohei Arai and Achmad Basuki
Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 10
5.4. Mud-Height Differences
This simulation shows the mud-height change in every period. We cut one line from main crater
to farthest point and determine mud-height in every point on this line. We show two graphs of
mud height; mud height in May 2008 (blue line) and August 2008 (red line) as shown in figure 15
in order to describe mud height differences. This result shows the difference of mud-height for
three months. The average of mud-height is 2.94m. It means every month mud-height increases
0.97m around main crater.
0
5
10
15
20
25
30
35
5 80 155 230 305 380 455 530 605
Distance from m ain crater (m )
MudHeight(m)
M ay-08
Aug-08
FIGURE 14. Mud-height differences
6. CONCLUSION AND FUTURE WORK
A new approach of probabilistic cellular automata approach offers a solution to predict new
inundated area on hot mudflow disaster. This approach is not only easy to develop but also has
better performance than other previous approach to predict new inundated area. It also obtains
the same location and direction with real data. This approach as model-based approach depends
on some parameters such as resolution and neighbor size.
This approach obtains better performance that previous CA approach, although the percentage of
intersection area still less than 70%. It happens because this approach requires high-resolution
map. In low-resolution map, this approach still open to improve. One possible approach is the use
of clustering on material flow. Using the cluster of material flow, we can adjust the probability
values in equilibrium states.
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Geoinformatica - An International Journal (GIIJ), Volume (1): Issue (1) 11
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