Microlecture in the teaching of data structure
Hu Ruijuan
Sch J Eng Tech | 341-342
DOI : 10.36347/sjet
Abstract
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Microlecture is an approach to teaching, in which the teacher gives lectures in videos. Recently, microlecture
is enjoying increasing popularity. This paper studies microlecture in the teaching of data structure. The author first points
out current problems in data structure courses, describe how to prepare a microlecture, and then discuss how to make
teaching more interesting and easy understanding by microlecture.
Case Study on Overhaul Performance of Excavator CAT 320 Series by Lean Production Program
Chin-Chiuan Lin, Chang-Jiang Lee, Hsin-Yao Kuo
Sch J Eng Tech | 390-396
DOI : 10.36347/sjet
Abstract
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Present study developed and proposed improve steps of Overhaul process which conducted by lean production
program. The research procedure includes four stages: analyze the current status, establish improve steps, implement
improve step, and confirm improved status after implement improve step. The eight types of waste was confirmed and
the improve steps was established after analyze the current status. After implement the improving steps, the Overhaul
days was reduced from 88 to 49 days, reduced about 5% of costs, and increased about 18% of profit. The results were
confirmed that the Overhaul performance of excavator can be improved by the improving steps which conducted by lean
production program.
Collision Detection Optimization of 3d Landscape Design by LOD Algorithm
Xue Ting
Sch J Eng Tech | 494-499
DOI : 10.36347/sjet
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Focusing on the visual effect deficiency in the application of standard LOD algorithm for 3D landscape
design, 3D landscape designing model based on terrain complexity collision and shading rendering is built in this paper.
First, 3D landscape design models are devided into two categories, regular terrain and irregular terrain, and different
rules are respectively adopted during model building. Then, select the LOD model scheduling index according to
auxiliary viewpoint, estimate light occlusion by virtue of chebyshev inequality, finally complete the shading rendering
optimization by establishing fuzzy variance shadow maps. Meanwhile simulation experiment was conducted, and the
experimental results showed that improved algorithm had better visual effect compared to standard algorithm.
Mathematical Modeling of Infra-red Drying of Mango-Sweetpotato Leathers
Effah-Manu L, Oduro I, Addo A, Adjei I.A
Sch J Eng Tech | 334-340
DOI : 10.36347/sjet
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Infra-red drying has in recent times been of use due to the potential for obtaining quality dried foodstuffs. To
reduce losses associated with mangoes and sweet potatoes, infra-red dryer was employed in drying mango-sweetpotato
leather. Cured sweetpotatoes were dextrinized in an oven and the edible portion removed and homogenized to obtain
slurry. The slurry was added to mango puree in various proportions and dried in an infra-red dyer for 45, 50 and 55 oC for
1, 1.5 and 2 h with different tray loads of 100, 150, 200 g to study the drying characteristics using the infra-red dryer.
The values obtained were fitted to four thin layer drying models. The effect of dextrinized sweetpotatoes on the drying
characteristics of infra-red dried leathers has been investigated. Generally, all the drying processes occurred in the falling
rate period. The Henderson and Pabis model best described the thin layer drying characteristics of infra-red dried mangosweetpotato leathers. The high ko values of 4.032 × 106, 4.20 × 106 and 4.342 × 106 ( h-1) show low resistance to moisture
loss. Based on ko and Ea values, the suitable temperature for drying mango-sweetpotato leathers is 50 oC.
Fault-Tolerant Unicast, Multicast and Broadcast Routing Flow-Based Models
Olexandr V. Lemeshko, Kinan M. Arous, Oleksandra S. Yeremenko
Sch J Eng Tech | 343-350
DOI : 10.36347/sjet
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Flow-based models of unicast, multicast and broadcast fault-tolerant routing in telecommunication networks
were proposed. The novelty of models is a description of multiproduct case, as well as in consideration of flowing nature
of modern network traffic, allowing to implement previously known conditions for communication links overload
prevention for the case of unicast, multicast and broadcast routing type. The models represented by a system of linear
equations and inequalities, which makes them effective in terms of algorithm implementation. As part of the proposed
models tasks of unicast, multicast and broadcast routing are focused on solving optimization problems. Numerical
examples showed efficiency of the proposed models in terms of serving multiple flows with different characteristics
concurrently and adaptation to changes of network parameters (e.g. channel capacity). The proposed model can be used
for solving the unicast, multicast and broadcast routing problems, and the mathematical description of more complex
processes and problems, such as those associated with the design of telecommunication networks (selection of topology
and bandwidth of communication links).
Improvement Design of Vertically-telescopical Substructure of ZJ30 Rig based on the theory of finite element
Zhang Xiaoguang, Xu Baorui, Yang Jingyuan
Sch J Eng Tech | 351-367
DOI : 10.36347/sjet
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According to the actual structure and stress state of the ZJ30 rig derrick and substructure, the beam element
model of the derrick and the entity model of the substructure for finite element analysis were established in the article.
Considering three most dangerous working conditions, the derrick rising, maximum hook load and casing installation, the
load on the substructure was calculated by the software ANSYS ,a finite element analysis software the force and
deformation on the part of the substructure were analyzed. The weak parts with the big stress and deformation were
redesigned and recalculated based on the above to ensure the safety of the substructure in operation
Prestressed concrete continuous rigid frame bridge closure segments jacking force calculation and analysis
Tang Ke-ping
Sch J Eng Tech | 368-371
DOI : 10.36347/sjet
Abstract
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Prestressed concrete continuous rigid frame bridge in the completion of system transformation, the late creep
and shrinkage of concrete combined with cooling effect between the two pier girder has a tendency to shorten, Forced to
cross the pillar top displacement direction, the bottom of the pier top and pier produce bigger bending moment, Is limited
by fibre concrete girders at the same time, the tensile stress inside the structure, the structural damage. Therefore, after
the final closure for the side span, across different before the final closure of the cantilever end on a horizontal thrust,
make the bridge produces a deviation to resist the displacement, is beneficial to late bridge stress, increase the safety of
the structure. This article is based on a continuous rigid frame bridge under construction in chongqing construction
present situation, in accordance with the requirements of design drawings, by establishing a finite element model,
Calculation and analysis to determine which span closure jacking force value, Provide a theoretical basis to guide the
construction.
Diagnostics of Motor Oil Quality by Using the Device Based on Surface Plasmon Resonance Phenomenon
Volodymyr Maslov, Anatoliy Liptuga, Valentyn Gordienko, Glib Dorozinsky, Vitalii Pidgornyi
Sch J Eng Tech | 372-374
DOI : 10.36347/sjet
Abstract
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We demonstrate the possibility to examine quality of motor oil by using the method of surface plasmon
resonance (SPR) for comparing values of refractive indexes inherent to initial and used oil. It was experimentally shown
that the SPR method can be applied for examining quality of motor oils for controlling their quality and wear factor of
machinery and mechanisms.
Alkali-surfactant-polymer flooding experiment in GT block of Daqing oil field
Zhao Yang, Liya Wang, Xingang Wang
Sch J Eng Tech | 379-382
DOI : 10.36347/sjet
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GT block at present, injection-production well pattern and water injection mode has basically met the needs of
oil field development. In order to study the suitable surfactant flooding system of domestic carboxylate for ASP flooding
in Daqing oil field, for the first time, in GT block we carry out domestic oleic acid carboxylate surfactant applied to field
experiment of asp flooding. The indoor experiment and field test show that, test obtained the effect that oil is increased
and water precipitation is reduced. In addition, great changes have taken place in ion of produced fluid. And
emulsification happened, but emulsification extent without added. This experiment is the first time to apply oleic acid
surfactant in Daqing oil field. Therefore the result and analysis produce a positive effect on alkali-surfactant-polymer
flooding in Daqing oil field.
Modelling natural gas pressure reducing stations for power generation using expansion turbines
Ali Ebrahimi, Hossein Ahmadi Danesh
Sch J Eng Tech | 383-389
DOI : 10.36347/sjet
Abstract
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Natural gas has a high pressure before consumption in industries and cities. This pressure is reduced using
relief valves in urban gas pressure reducing stations. Pressure drop results in great energy loss and accordingly stations
are able to generate power. If we could install an expansion turbine parallel with the station and to move an axis, we
could gain electricity from axial work. In this paper, first urban gas pressure reducing stations are modelled using
HYSYS Software. After installation of an expansion turbine in the direction of station, productivity of the station is
investigated, followed by examination of temperature, pressure, and productivity in the station and their results.
Study on Effect of Different Size Fraction Laterite Particles on Adsorption of Arsenic
Peng Liu, Ying Huang
Sch J Eng Tech | 397-401
DOI : 10.36347/sjet
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The problem of environmental geotechnical engineering is the important problem that relates to the safety and
the sustainable development of the geotechnical structure. This paper, studied the adsorption characteristics and pH of
arsenic in different size of laterite particles. The test results show that the adsorption trend of arsenic by different particle
size aggregates is consistent with that of the change. The isothermal adsorption process of arsenic in each particle of the
particle was fitted by Langmuir equation. The effect of pH on the adsorption of arsenic in laterite was greatly. The
adsorption capacity of arsenic decreased with the increase of pH value. The pH effect the greatest impact on the four
types of laterite in class A, the other three types of laterite effect is almost the same, indicating that particle size range for
the laterite in the middle reaches of the 0-0.005mm high off the state of iron oxide content, and pH value has a direct
impact on the free ferric oxide existing forms and characteristics, and ultimately effect of arsenic ion adsorption capacity
of laterite particles.
Functional Properties of Water Holding Capacity, Oil Holding Capacity, Wettability, and Sedimentation of Swell-Dried Soybean Powder
Duc Quang Nguyen, Sabah Mounir, Karim Allaf
Sch J Eng Tech | 402-412
DOI : 10.36347/sjet
Abstract
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Functional properties of expanded granule soybean powder issued from swell-drying were studied and
compared with those of conventional ground powder. Swell-dried soybeans were textured by Instant Controlled Pressure
Drop DIC and subsequently airflow dried before grinding. The obtained results showed a remarkable increasing of swelldried soybeans in both Water Holding Capacity and Oil Holding Capacity. The increasing ratios were found to be up to
51% and 57%, respectively. Furthermore, the time required for rewetting expanded granule powder was about 51 s
against 10 min in the case of conventional powder. No sedimentation was observed for expanded granule powder during
the first 5 min of settling, and after 1 h, sedimentation volume kept almost constant with no significant difference.
Response surface methodology was used for a multi-criteria optimization of DIC treatment in terms of the best functional
properties. Saturated steam pressure was the dominant parameter for all studied functional properties.
A Case Study: A Process FMEA Tool to Enhance Quality and Efficiency of Bearing Manufacturing Industry
Riddhish Thakore, Rajat Dave, Tejas Parsana
Sch J Eng Tech | 413-418
DOI : 10.36347/sjet
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This Paper is an attempted to represent the potential tool for evaluates the problem of manufacturing process
by implementing the process FMEA. This study has a goal to concentrate and eliminate the potential problem for
manufacturing process of bearing in company through executing the Failure Mode and Effect Analysis. Various possible
causes of failure and their effect of sub system has been evaluated for improving the reliability of the product as well as
bottom line of the manufacturing can be improved. Process FMEA having some parameters needed to define which are
Severity values, occurrence number, Detection and Risk priority Number (RPN). On the basis of the parameters some of
the suggestions are proposed for avoiding the possible risk and ultimately decrease the loss to the industries in terms of
money, time and quality.
A High Efficient Method of GIS Spatial Data Conversion
Lili Wang, Xincheng Gao
Sch J Eng Tech | 419-423
DOI : 10.36347/sjet
Abstract
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At present, most historical surveying data are stored with CAD format, so they can’t be used directly in GIS.
This paper focused researches the data format of the CAD and ArcGIS, introduces several methods of data conversion,
points out the problems existing in data conversion, and achieves an efficient automatic conversion method from CAD
data to Geodatabas database. This method has been applied to the actual project and received the good effect.
An Efficient Design Method of Enterprise Attendance System Based on SSH2
Lili Wang, Panlin Jiang
Sch J Eng Tech | 424-428
DOI : 10.36347/sjet
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On the basis of SSH2 open source framework, this paper designed and implemented a set of employee
attendance management system. The system uses JSP, Ajax and JNDI technology to regulate the system standards.
Meanwhile it implements the separation of presentation layer, business layer and database layer, which reduces the
coupling of the module and improves the code reusability. The practice has proved that the system has the characteristics
with strong expansibility, good maintainability and high efficiency, and has a good application effect.
Enhancement of Efficiency of TiO2|Dye|CuI Solar Cell by Coupling Two MetalCentered Dyes
Prasad Manjusri Sirimanne
Sch J Eng Tech | 429-433
DOI : 10.36347/sjet
Abstract
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The coupling effect of cis-bis(isothiocyanato)-bis(2,2’-bipyridyl-4,4’-dicarboxylato) ruthenium(II) with
triscarboxy-rutheniumterpyridine [Ru(4,4',4"-(COOH)3-terpy) (NCS)3] on the sensitization process of solid-state
TiO2|dye|CuI cells was studied. The maximum power conversion efficiencies of 3.0%, 3.8% and 4.98 % were obtained
for TiO2|dye|CuI cell sensitized with triscarboxy-rutheniumterpyridine [Ru(4,4',4"- (COOH)3-terpy)(NCS)3], cis-bis
(isothiocyanato)-bis(2,2’-bipyridyl-4,4’-dicarboxylato) ruthenium(II) and combination of these dyes. Change of order of
dyes was significantly influenced for the efficiency of the solar cells.
An Efficient Design Method of News System
Lili Wang, CaiZhi Wang
Sch J Eng Tech | 434-437
DOI : 10.36347/sjet
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Using development method of dynamic and static B/S structure, this paper designed and implemented an static
news system based on dynamic generation technology. The system overcomes the shortcomings of traditional dynamic
website, such as low access efficiency, poor security, poor concurrency and so on. At the same time, it also inherits fast
real-time update, large concurrent traffic, normative published content, convenient interaction and other advantages.
Effect of Vegetative Cover on Urban Heat Island Effect
Ayon Tarafdar, Utkarsh Patnaik
Sch J Eng Tech | 438-441
DOI : 10.36347/sjet
Abstract
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With rapid industrialization and the rise of concrete forests, the effects of climate change have now posed a
major challenge to the scientific community. The absorbance of radiation on the surface has incremented over the years
with urbanization. The replacement of vegetation by layers of asphalt and concrete has led to changes in the
characteristics of the surface like the thermal capacity, heat capacity and albedo. The consequences of which have
developed a phenomenon now popularly known as the Urban Heat Island Effect (UHI). In a developing country like
India, where the urban growth is in its dormant phase, it is possible to strategize for a climate-sensitive infrastructure. An
observational study on the same was carried out in Kharagpur region of West Bengal. The studies revealed that
vegetation in the form of grass cover over buildings reduced interior temperatures by 7.68˚C on an average as compared
to structures exposed to direct sunlight at <95% relative humidity conditions. This paper therefore provides a possible
and sustainable strategy to tackle UHI and to overtake adverse climate changes by a significant factor.
An Experimental Investigation on AISI 316 Stainless Steel for Tool Profile Change in Die Sinking EDM Using DOE
Abhijeetsinh V Makwana, Kapil S Banker
Sch J Eng Tech | 447-462
DOI : 10.36347/sjet
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The objective of research is to study the influence of Process parameters and electrode shape configuration on
the Machining characteristics of die sinking EDM. The present work aims to study the effect of different electrode shapes
(Circular, rectangular and triangular) With constant cross sectional area of 280 mm2 on material removal rate (MRR),
surface roughness (SR) and Electrode wear rate (EWR) for AISI 316 Stainless steel workpiece material and pure copper
As electrode material. Detailed analysis of structural features of machined surface is done by using Scanning Electron
Microscope (SEM) to understand the mode of heat affected zone (HAZ), recast layer thickness and micro cracks which
alternatively affects structure of machined workpiece and hence tool life. The optimization of the parameters of the EDM
machining will be carried out by using the taguchi‟s method for design of experiments (DOE). The main objective of this
analysis is to identify the Optimum electrode shapes in terms of higher MRR, minimum EWR and excellent surface
characteristics. The optimum tool shape for higher MRR, lower EWR and excellent SR is circular, followed by
rectangular and Triangular cross sections.
A Model of Pipeline Flow Monitoring in Wide Area Wireless Sensor Network
Umunna Chike Odogwu, Ezechukwu, O.A, Aneke Jude, Okolo Chidiebere
Sch J Eng Tech | 463-472
DOI : 10.36347/sjet
Abstract
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Designing a model for pipeline flow monitoring using Wide Area Network (WAN) as well as low power
wireless sensor nodes has been the general goal of design engineers. Such network desires to have a Wide Area Wireless
Sensor Network (WAWSN) that will run on little power (if possible, none at all) thereby saving cost, and the
inconveniences of having to replace batteries in some difficult to access areas of usage. This paper then developed a
Structural Monitoring Hierarchy (SMH) starting with pipeline design considerations, pipeline energy models, fluid
pressure losses, fluid flow modelling, event location model and WAN WSN output or battery model for sustainable
transceiver energy consumption for a typical node deployment architecture. By studying the energy consumption map of
the transceiver of a WSN node battery model, this research developed an energy consumption model of the transceiver
unit of a typical sensor node battery. Important metrics like Depth of Charge (DOC), State of Charge (SOC), Load
current and Load Voltage were derived and plotted using MATLAB.
All travelling wave solutions to the regularized short pulse equation
Yangyang Cui, XuGuo
Sch J Eng Tech | 473-476
DOI : 10.36347/sjet
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The complete discrimination system for polynomial method is applied to the RSPE, and we have obtained all
of its possible exact traveling wave solutions including rational function type solutions, solitary wave solutions, triangle
function type periodic solutions and Jacobian elliptic functions double periodic solutions, some of them are new
solutions.
Numerical simulation study of flow field of centrifugal pump based on variable speed
Ma Ming-Yi
Sch J Eng Tech | 477-481
DOI : 10.36347/sjet
Abstract
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In order to study the variable speed influent to the inner flow field of centrifugal pump, we selected three
pump speed, 1500r/min, 2200r/min, 3200r/min, as working condition to conduct on fluid dynamics numerical simulation.
The simulation results indicated that with the speed increasing or decreasing, the inner flow field of centrifugal pump has
different degrees of changing. Furthermore, at the working condition of 1500r/min and 3200r/min, the inner flow passage
have very obvious difference, there are bigger pressure and velocity gradient in the local region. This centrifugal pump
has a good performance of working in this speed range.
Using MATLAB to achieve improved BP neural network model of remote sensing image classification
Ma-Xin
Sch J Eng Tech | 482-486
DOI : 10.36347/sjet
Abstract
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Application of improved BP neural network (NN) model to research the ETM + remote sensing (RS) data
classification. Select six of LANDSAT 7 ETM + multi-spectral bands as the data source, through read the six ETM
image respectively in each pixel’s gray value, construct a six - dimensional input sample of the sample space:
Vi={Vil,Vi2,Vi3,Vi4,Vi5,Vi6}. Through the experiment, ETM1, ETM3, ETM5, ETM7 was determined four wave bands
as the input layer(the number of input layer neurons M = 4), and the geological object was divided into five
categories(the number of output neurons N = 5), the optimal improved BP NN structure for the three-layers BP network,
the number of the hidden layer nodes is 24, the input layer node number is 4, the output layer nodes is 5, excitation
function for the S-type logarithmic function. The optimal network training parameters : the initial weights is 0.1, the
learning rate is 0.9 , increasing rate of learning speed is 1.0 , decreasing rate of learning speed is 0.05 , the momentum
factor is 0.001 , the network 's global error is 0.01 .Network model after 2000 times or less training, to achieve
convergence. The model was applied to RS images of Mulei County of Xinjiang carry out geology type classification, the
total classification precision reaches 89.06%, rapid classification quality is good, meet the production quality
requirements.
Gaussian Fuzzy Membership Function for Enhancement of Different Medical Images
Manjot Kaur Khehra Mohar, Mandeep Singh Devgan
Sch J Eng Tech | 500-509
DOI : 10.36347/sjet
Abstract
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Disease is a cause which originates the need of treatment, whenever there is any kind of suspicion, person
tends to visit specialist for diagnose. Diagnose of disease tissues is crucial task in order to take right decisions for treating
and preventing disease at right time. Several researches shows that if disease is diagnosed at early stage, it will decrease
the rate of morality and options of treatment will be increased. In thispaper an efficient approach for enhancement of
medical images is proposed. This approach is based on Gaussian fuzzy technique. Gaussian fuzzy approach uses
Gaussian fuzzy membership function for enhancing medical images. This approach uses average gray level values and
threshold to find bandwidth of Gaussian function, this bandwidth in turn is used in general formula for Gaussian
function. Using this function, we obtain enhanced image as an output. Medical images from standard database are
obtained and carried out through experimentation process. For efficient testing different medical images (MRI, CTSCAN, X-RAY and Mammograms etc.) are extracted from database. Obtained results are compared with the results from
other techniques and the results from the proposed approach are quite promising and when compared proposed approach
comes out to be better than previous approach. This approach can be used to develop Computer-Aided decision system
for detection of diseases in future.
Morphological recognition optimization of 3D building simplification by Delaunay algorithm
Xue Ting
Sch J Eng Tech | 510-514
DOI : 10.36347/sjet
Abstract
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Focusing on the deficiencies in the application of standard Delaunay algorithm during three dimensional
building simplification, based on morphological recognition, 3D building simplification model was proposed by
searching optimization algorithm in this paper. First the Delaunay triangulation of constrained domain was converted to
unconstrained domain, Delaunay net of discrete points was built by morphological recognition direction search method.
Adopt the method of first pre-processing and then searching, insert two vertexes of the constrained edge into Delaunay
triangulation using the mode of "point by point", then search the influence domain of the constrained edge. Finally, from
the results of the simulation experiment, through the optimization of morphological recognition by standard Delaunay
algorithm, improved algorithm had more excellent simplification effect compared to standard algorithm.
An Analysis of Boundary Layer Flow over a Flat Plate Using Modified Adomian Decomposition Method
Adewoye Raphael Adebisi
Sch J Eng Tech | 520-528
DOI : 10.36347/sjet
Abstract
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In this paper, the boundary layer flow over a flat plate was presented and discussed. The equations governing
the boundary layer and the energy equation were equally considered. Modified Adomian decomposition method
discussed and used with the Runge-Kutta shooting method to solve the Blasius equation and the Energy equation arising
from the equations governing the boundary layer flow. Numerical results were obtained and each of the methods used
converges to the true solution as the velocity profile increased to a steady state. The obtained results for the Blasius
equation revealed one of the features of boundary layer that the boundary layer increases from the edge of the boundary
layer into the free steam. Different values of Prandtl number used for the obtained results for the energy equation
revealed that as the Prandtl number used increases, the boundary layer thickness reduces which established the stability
function of the Prandtl number on the temperature. Values for the skin friction (the measure of velocity profile at the
wall) as well as the Nusselt number (the heat transfer rate at the wall) were calculated from the results obtained for the
Blasius equation and the Energy equation. Using the Runge-Kuta shooting method as the standard value, it revealed that
Modified Adomian Decomposition Method is a good approximation value to Nusselt number.
