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Papers by CRPASE Journal

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

In this work, we will examine a fractional system of differential equations. This system is model... more In this work, we will examine a fractional system of differential equations. This system is modelled for the contamination of an arrangement of lakes. We have to find the analytic results of this model by utilizing analytical method familiar as Variation of Parameters method (VPM).This technique reduces the computational work and converges to its solution by removing noise terms. These terms frequently occur in an iteration process of some techniques. To manage a fractional expression, we are coupling Riemann-Liouville fractional integral. We will also analyze our outcomes with some other familiar analytical methods like Variation of iteration technique, Adomian decomposition technique and Daftardar-Jafari technique to examine the ability of our applied approach.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Main Concept We introduce a new concept of massive body travel with less than the speed of light,... more Main Concept We introduce a new concept of massive body travel with less than the speed of light, with the speed of light, and with greater than the speed of light in a circular path. According to Einstein's equation = 2 , energy and mass are exchangeable. If a person is moving with the speed of light, its mass will increase (i.e.body traveling with 90% of the speed of light then its mass becomes double). Einstein's equation also tells us, if the mass is converted into some energy, it also means how much energy resided in the mass. According to scientists' thinking, at this stage, a massive body cannot travel at the speed of light. If an object travels with the speed of light, the time stops and the mass of the body becomes infinite which is unrealistic but here we introduce a unique theoretical concept about energy, time and space with the help of the following cases: We consider that the body (say; we) rotate along a circular path or rotate around the pole with some speed, If; 1. Speed of the body is slightly less than the speed of light: It is possible to move from one place to another in a short interval of time. When the speed is high enough but less than the speed of light, then we can see our backside but not touch it. 2. Speed of body is equal to the speed of light: If an object(we) travel with the speed of light in a circular path, there is a chance to catch ourself. It means that we will be at the initial point from where we started our rotation, the time will stop, and probably our whole mass will be converted into energy. 3. Speed of body is greater than the speed of light: If an object (we) travel with the speed of light in a circular path, there is a chance that we pass through  Corresponding. ourself. The whole mass is converted into energy. Space and energy are exchangable. In the above two cases, the motion of the object looks like a wave.The consequence of this analysis is giving the path to scientists and opening the door into new physics.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

The scope of this paper is to consider the physiology of change deeply and studies the stages of ... more The scope of this paper is to consider the physiology of change deeply and studies the stages of change and its bold factors that involvers in software projects (e.g. developers or managers) in companies which require attention for bringing success along with change process in software development organizations.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

The study investigates the problem of traveling salesman problem with circular neighborhood (TSPC... more The study investigates the problem of traveling salesman problem with circular neighborhood (TSPCN). Instead of cities there are circles and each point on the circle can be a potential visiting node. The problem is to find the minimum length Hamiltonian cycle connecting the circles. Among the various real life applications of the problem, this paper concentrates on robot path planning for the laser welding robot and data collection in a wireless sensor network by unmanned aerial vehicles (UAVs). The TSPCN is formulated as a nonlinear model, the objective function is linearized, and as a solution algorithm solved with a two-phase method. The Models are coded in Cplex and Knitro and solved for small and medium sized instances.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Thermo-mechanical reliability, Creep-fatigue failure, Qualification tests, Solder joints, Multi-c... more Thermo-mechanical reliability, Creep-fatigue failure, Qualification tests, Solder joints, Multi-chip module. A multi-chip module (MCM) which is integrated by multiple integrated circuits (IC) into a unified substrate can significantly reduce the interconnection spacing between various chips and enhance the electrical characteristics. Despite multi-chip module's greater performance compared with traditional encapsulation, the corresponding problem is mainly induced by thermo-mechanical, and the reliability assessment has also been a critical issue in the electronic industry. The creep-fatigue failure of solder joints under cyclic temperature fluctuations, which is caused by both ambient temperature changes and internal power cycling, plays an important role in the thermo-mechanical reliability of the MCM. In order to assess the influence of cyclic temperature loading profiles on the fatigue life of the solder joints, three different kinds of temperature-related qualification tests, i.e. accelerated temperature cycles (ATC), thermal shock cycles and modified temperature cycles with 10-minutes dwell period, are utilized in the finite element analysis (FEA). Using the FEA method, we can obtain the critical solder joints located in the outer corner of the substrate in MCM and the specific failure location of the solder joint, which is validated by the optical micrograph. Furthermore, based on the energy-partitioning damage model, a comparative analysis of the fatigue life of critical solder joints under various temperature loading profiles is made. The results obtained can improve the design and manufacture in the field of microelectronics encapsulation. For a basic qualification test, these results can also provide the guidelines for the engineers and manufacturers.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Rutting and cracking are two common modes of failures in asphalt pavements. Due to increase in tr... more Rutting and cracking are two common modes of failures in asphalt pavements. Due to increase in traffic volume and traffic loads, asphalt pavements get deteriorated gradually during their service life. Deterioration of asphalt pavements can be eliminated/minimized by enhancing the quality of bitumen and with modified bitumen. The use of nano materials as an additive because of its special characteristics is one of the self healing technique which have the potential to improve the pavement performance, extending its life span and also eliminating the need for pavement maintenance. This research work investigates the performance of nano silica in asphalt pavement. Experiments were conducted on bitumen and modified bitumen (addition of nano silica of different percentages, 2%, 4%, 6%, 8% and 10% with bitumen) in order to find the optimum nano silica content for preparing Marshal Mix. It was found that, for 6% of nano silica in modified bitumen, gave improved properties among other percentages of nano silica contents that are examined. Nano silica modified bituminous mix (NSMBM) samples were prepared for various bitumen contents, i.e., 4.5%, 5% and 5.5% and conducted marshal stability test. This study concludes that, the results obtained from marshal test gives higher stability value (10. 32 kN to 20.18 kN) and lesser flow value (4.48 mm to 2.60 mm) for Modified bituminous mixes over unmodified bituminous mix samples. Finally, the healing index was also determined based on theoretical approach and obtained 80 % healing rate for modified bituminous mix. Further investigations can be carried out on long term effects of NS in asphalt pavements as well as test rest periods for different temperatures and different loads.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Mobile Mapping Systems (MMS) can be employed for road safety inspection purposes to obtain Global... more Mobile Mapping Systems (MMS) can be employed for road safety inspection purposes to obtain Global Positioning System data and achieve accurate image data of the side features. Utilizing the MMS data, this paper develops a two-phase automated methodology to evaluate the location and numerical value of the speed limit signs before horizontal curves on two-lane rural roadways. The first phase includes the collection of the GPS data, including the horizontal curve radius, the associated speed, curve starting point, and the safe distance before the curve to install the speed limit sign and its' value. In the second phase, the required features on speed limit signs are extracted using a Support Vector Machine (SVM)-based pattern recognition method. Findings indicate that the proposed methodology leads to 92% and 97% accuracy while identifying the speed limit signpost itself in a frame and distinguishing the speed value on the sign, respectively. In addition, horizontal curve beginning points and curve radii have been identified with a precision of 97% and 90%, respectively. The proposed methodology has the potential to help attain the needed safety standards related to the location and value on the speed limit signs before the horizontal curves in a low-cost manner.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Keywords Abstract Composite Sandwich Structure; Structural Beams, Construction; Damage mechanisms... more Keywords Abstract Composite Sandwich Structure; Structural Beams, Construction; Damage mechanisms In this review paper, the applications of composite sandwich structures in structural engineering are presented. Composite sandwich structures are getting a special attention in most engineering applications as they provide beneficial replacement to the traditional construction materials. This is attributed to their unique mechanical properties such as high specific flexural stiffness, ultra-low structural weight, excellent flammability and corrosion resistance. The use of composite sandwich structures in construction and housing, railway sleepers, huge building frames, and roofs is discussed in detail in this article. Furthermore, a comparison between the numerous types of composite sandwich structures and their most common applications is provided. Also, this study dedicates a section to review the damage mechanisms of composite sandwich structures.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Innovation Maturity Model (IMM) creates the ability to improve and find the position of the innov... more Innovation Maturity Model (IMM) creates the ability to improve and find the position of the innovative software ideas in a more organized way through segments with specific processes which defined to evolve and measure the capability of the core idea. The creation of this framework has been done by exploring related frameworks; such as open innovation process model, Fugle innovation model, capability maturity model and perception of innovation in companies model. Therefore this paper seeks the contribution to evaluate the practical usefulness of the designed framework and proposes possible improvement roadmap of Innovation Maturity Model concept.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Based on the simulation results, steady-state tracking errors are improved. Control of indetermin... more Based on the simulation results, steady-state tracking errors are improved. Control of indeterminate systems, despite the actuator and sensor bias, has been and remains a major challenge. Sensor error can cause process error. Among the cases where sensor bias is common, air velocity measurements and gyroscope rates can be mentioned. Although considerable research efforts have previously focused on adapting the error, the bias correction of the sensor appears to be relatively limited. However, the cause of several crashes was the sensor error (due to radio altimeter error, angle of attack sensor error, airspeed speed sensor error). Also, finding a way to fix the sensor bias problem is of the utmost importance. The direct model reference adaptive control (MRAC) method is used to control uncertain systems using controllers that are adapted to achieve a performance close to a reference model. However, these controllers maintain system stability and provide close tracking of the reference model response. In this paper, we intend to address the problem of unknown sensor bias matching by adjusting the direct reference model adaptive control for state-feedback for state-tracking (SFST). Also, to obtain an asymptotic stable bias sensor estimator, we use the Kalman filter to estimate the bias sensor error. Based on the simulation results, steady-state tracking errors are improved.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Overvoltages caused by lightning strikes on the power system can damage the power system and redu... more Overvoltages caused by lightning strikes on the power system can damage the power system and reduce the reliability of the system, and this is always one of the main challenges in designing power transmission lines. Due to their relatively high height, they are one of the most vulnerable parts of the transmission line against lightning strikes. In this paper, we have tried to model the transient state of power and lightning network equipment using EMTP-RV software. Different lightning strikes on the tower and the phase conductor for a 400 kV double-circuit transmission line to be clay. To achieve this goal, an attempt was made to use the precision modeling mode of each network equipment, also since in recent years, the use of GIS substation has been considered due to the smaller space required for the construction of this type of substation and one of the main causes of equipment failure is this type of substation. Fast transient Overvoltages. Because the transmission line leads to a 400 kV GIS substation, an attempt has been made to model the substation equipment for this type of overvoltage on substation equipment and insulation coordination. It should also be examined.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

The traditional compressed air energy storage (CAES) technology requires the use of fossil fuels,... more The traditional compressed air energy storage (CAES) technology requires the use of fossil fuels, which will cause environmental pollution and other problems. The development of advanced adiabatic CAES (AA-CAES) system is of great significance for promoting the development of energy storage technology. First, the development of CAES technology is studied and analyzed. Then, according to the thermodynamic characteristics of the air storage components of energy storage system, we build two general purpose air storage models. Finally, based on the thermodynamic characteristics of the two air storage models, the AA-CAES system model is established, and the thermodynamic characteristics of the system are compared and analyzed with different air storage models. There are great differences in the stability, efficiency, thermal utilization and thermodynamic properties of AA-CAES system when the different air storage models are used.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Smartphones are very popular with young people, especially with university students. Actually, th... more Smartphones are very popular with young people, especially with university students. Actually, they take full advantage of the gadget, mainly in their communicative, entertainment and educational functionalities; these are, aspects of the social and educational field. Then, students from the School of Systems Engineering of the National University of Trujillo are not the exception. In fact, smartphones are currently one of the personal devices most used in their activities. In that way, the aim of this study was to determine the influence of using Smartphones in the teaching-learning process of the Systems Engineering's students in the National University of Trujillo. To fulfill the objective, the literature related was reviewed, a questionnaire was developed and process to collect data related to the use of the Smartphones in Systems Engineering's students, and finally statistical tests were carried out to be able to affirm that there is influence of using Smartphones in the teaching-learning process.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

The field of underwater acoustics has been extensively developed over the past four decades in re... more The field of underwater acoustics has been extensively developed over the past four decades in response to practical needs originating within both the naval sonar and the marine seismology communities. In contrast to electromagnetic waves, which are highly attenuated in water, acoustic waves can propagate long distances in underwater environments. For this reason, sound waves are used in water in much the same way that electromagnetic waves are used in the atmosphere to sense the environment and communicate. Hence, there is SONAR (Sound Navigation and Ranging) instead of radar, acoustic communication instead of radio, and acoustic imaging and tomography instead of microwave or optical imaging or x ray tomography. Underwater acoustics is the science of sound in water (most commonly in the ocean) and encompasses not only the study of sound propagation, but also the masking of sound signal by interfering phenomenon and the signal processing for extracting these signals from interference. This paper reviews the latest advances on underwater acoustics, specifically underwater acoustic communication and wave propagation.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

The transport model of improved J-V formula based on the work by Ammar and Sun[1] is now applied ... more The transport model of improved J-V formula based on the work by Ammar and Sun[1] is
now applied to hole only devices (MEH-PPV), and (PF-TAA) of different thickness with
various temperatures. The obtained results are strongly agree with complete numerical
solution and experimental data. From this study it is verified that this formula base charge
transport model is accurate, precise, and covers a large number of materials. These
theoretical result are opening an interesting prospects in near future.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Dynamical system is explained as a particle movement which depend on time and predicts its future... more Dynamical system is explained as a particle movement which depend on time and predicts its future behavior. Dynamical systems are always used for some engineering problems. These problems include movements, vibrations and technology. It has several applications in automotive engineering as well. It includes the vehicle dynamic design and control systems. Although it develops the systems that helps the human life, but it also brings plenty of necessaries which one of them is optimization. Multidisciplinary design optimization (MDO) should be used in the solving of dynamic engineering problems. Lacking MDO can lead to less efficiency or mismatch of system. MDO play important role in the improvement of the systems. In this article a review on the application of MDO in dynamic system is presented.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

In order to analyze the safety and reliability of a system, different types of probabilistic stru... more In order to analyze the safety and reliability of a system, different types of probabilistic structural methods such fault tree analysis (FTA), event tree analysis (ETA), Bayesian Network (BN) can be used. In such probabilistic methods, the failure probability of an event as root events must be obtained. Reliability Data handbook database can be used to obtain the failure probability of the events. However, in some case, there is no data about the failure probability of event. In such a case, expert judgment using fuzzy set theory and its extensions are utilized as an alternative in order to deal with the subjective uncertainty. However, the common existing expert judgment approaches still suffer from the logical lack of reliability in the experts' opinions elicitation procedure. This paper analyzes the use of fuzzy set theory and its extensions in safety and reliability analysis as well as discussing how they suffer from lack of reliability As a result, it should make researchers in that situation deeply think about finding out of a better alternative using experts' judgment-based methods.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Combined high and low cycle fatigue (CCF) of aircraft turbine blades was studied in this paper. W... more Combined high and low cycle fatigue (CCF) of aircraft turbine blades was studied in this paper. With the aim to accurately estimate the CCF damage of turbine blade alloys, a new life prediction model was presented on the basis of nonlinear damage rule to address the loading history and interaction of high cycle fatigue and low cycle fatigue. To conduct the model validation, four experimental data sets of turbine blade alloy materials and turbine blades were utilized. The statistical analysis of model validation and model errors suggested that the presented model provides the highest accurate predictions by comparing with those of three typical common models.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

Aircraft wings are a compromise that allows the aircraft to fly at a range of flight conditions. ... more Aircraft wings are a compromise that allows the aircraft to fly at a range of flight conditions. Wings of the morphing type are meaningful advancements of the conventional structures as they are benefit to maneuverability and economy of aircrafts. Aims to demonstrate features of morphing wings' performance, this paper conducts a comprehensive Finite Element Analysis to a morphing wing after the object had been carefully designed. The deformation, strain energy, equivalent stress, and equivalent elastic strain of the morphing wing after applying a certain pressure are reached according to the constructed Finite Element model. Conclusion such as stress concentration point, maximum deformation, etc. of the morphing wing are suggested according to the analytic results.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020

The pedestrian crossing speed in the signalized intersections is one of the most important parame... more The pedestrian crossing speed in the signalized intersections is one of the most important parameters in the designing intersections and also is essential information in controlling the amount of delay and traffic. The present study aims to measure and statistically analyze the pedestrian crossing speed according to the weather conditions, which is either normal or rainy. In order to do this, the crossing speed of 4381 pedestrians has been gathered through the photography of two signalized intersections in Rasht city. Furthermore, these findings have been analyzed through the Independent Sample T-Test. The results show that, with a 95 per cent confidence, in both gender groups of men and women, the difference in the pedestrian speed according to the weather conditions of either normal or rainy is statistically meaningful and the pedestrian crossing speed was significantly more in the times of rain than in normal weather conditions. Meanwhile, in Rain Condition s, the 15 th percentile crossing speeds for men and women increase 3.0 per cent and 21.5 per cent according to 15 th percentile speeds in the normal weather conditions respectively. Therefore, it is suggested that the pedestrian speed in the normal weather conditions be regarded as the base for designing, so that the 15 th percentile crossing speeds and the average of all samples in the Rain Condition are 1.05 and 1.24 meter per second successively.

COMPUTATIONAL RESEARCH PROGRESS IN APPLIED SCIENCE & ENGINEERING (CRPASE), 2020