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Full-Text Articles in Engineering

An Effective Illumination Compensation Method For Face Recognition, Yea-Shuan Huang, Chu-Yung Li Dec 2013

An Effective Illumination Compensation Method For Face Recognition, Yea-Shuan Huang, Chu-Yung Li

Journal of Marine Science and Technology–Taiwan

Face recognition is very useful in many applications, such as safety and surveillance, intelligent robot, and computer login. The reliability and accuracy of such systems will be influenced by the variation of background illumination. Therefore, how to accomplish an effective illumination compensation method for human face image is a key technology for face recognition. Our study uses several computer vision techniques to develop an illumination compensation algorithm to processing the single channel (such as grey level or illumination intensity) face image. The proposed method mainly consists of three processing modules: (1) Homomorphic Filtering, (2) Ratio Image Generation, and (3) Anisotropic …


Automatic Location For Multi-Symbology And Multiple 1d And 2d Barcodes, Daw-Tung Lin, Chin-Lin Lin Dec 2013

Automatic Location For Multi-Symbology And Multiple 1d And 2d Barcodes, Daw-Tung Lin, Chin-Lin Lin

Journal of Marine Science and Technology–Taiwan

Multi-symbology barcode location is a practical and challenging issue. Image-based barcode recognition techniques are robust and extendable approaches for reading versatile one-dimensional (1D) and two-dimensional (2D) barcodes. Most methods may work for a single 1D or 2D barcode or rely on a unique pattern to locate a single 1D or 2D barcode. This work proposes a general localization framework for extraction of real barcodes under complex backgrounds when multiple symbology types exist in the same snapshot for 1D barcodes, 2D barcodes, or both. There are five steps of the proposed algorithm: image grayscale conversion, adaptive thresholding, application of a modified …


Physical Models For Simulating Ship Stability And Hydrostatic Motions, Shyh-Kuang Ueng Dec 2013

Physical Models For Simulating Ship Stability And Hydrostatic Motions, Shyh-Kuang Ueng

Journal of Marine Science and Technology–Taiwan

In this paper, efficient physics models are presented for simulating ship hydrostatic motions caused by sea waves, cargoes and flooding water. Based on the stability theory of ship, a ship is regarded as a floating body whose stability is indicated by its gravity, buoyancy and meta centers. These stability centers are influenced by cargoes, sea waves, flooding water and the ship mass. Variations of these stability centers create torques and forces which cause the ship to heave, pitch and roll. Because of the irregularity of the ship shape, analytical solutions of these stability centers do not exist. In this work, …


Traffic Monitoring And Event Analysis Based On Integrated Multivideo And Petri Net Process, Chang-Lung Tsai Dec 2013

Traffic Monitoring And Event Analysis Based On Integrated Multivideo And Petri Net Process, Chang-Lung Tsai

Journal of Marine Science and Technology–Taiwan

Decreasing traffic accidents and events are one of the most important responsibilities for all of the governments in the world. However, it is difficult to exactly measuring the traffic condition. To find out the root cause of traffic accidents and restore the occurrence of traffic events, a traffic monitor and event analysis mechanism based on multi-videos processing and Petri net analysis techniques is proposed. In which, the traffic information is collected through the deployment of cameras at intersection of heavy traffic area. After then, all of the collected information is provided for constructing multiviewpoint traffic model. The significant features are …


A Heat Island Observation Via Modis And Concurrent Helicopter-Borne Ir Imager, Tsung-Hua Kuo, Gin-Rong Liu, Tang-Huang Lin, Chia-Wen Lan, Chi-Ping Huang Dec 2013

A Heat Island Observation Via Modis And Concurrent Helicopter-Borne Ir Imager, Tsung-Hua Kuo, Gin-Rong Liu, Tang-Huang Lin, Chia-Wen Lan, Chi-Ping Huang

Journal of Marine Science and Technology–Taiwan

In this study, observations and aerial surveys were conducted in delineating the heat island patterns. Concurrent datasets from the satellite-borne MODIS sensor and helicopter-borne thermal IR imager were employed. The sampling data in this experiment covered an area exceeding 100 km2 in Taiwan’s western plain. A more than 10°C temperature difference between different sampling points could be observed in this area. The relationship between the surface temperature and vegetation index values was also showed. Results showed that the surface canopy and the air humidity together played an important role in the surface temperature increase.


An Effective Color-Difference-Based Demosaicking Method, Yea-Shuan Huang, Sheng-Yi Cheng Dec 2013

An Effective Color-Difference-Based Demosaicking Method, Yea-Shuan Huang, Sheng-Yi Cheng

Journal of Marine Science and Technology–Taiwan

This paper proposes an effective color-difference-based (ECDB) interpolation algorithm for color filter array (CFA) image demosaicking. A CFA image consists of a set of spectrally selective filters which are arranged in an interleaved pattern such that only one color component is sampled at each pixel location. To improve the quality of reconstructed fullcolor images from CFA images, the ECDB algorithm first analyzes the samples immediately around a missing green pixel to determine suitable samples for interpolating the value of this missing green pixel. After finishing the interpolation operations of all the missing green pixels, a complete green plane (i.e G …


Vehicle Counting Without Background Modeling, Cheng-Chang Lien, Cheng-Ta Hsieh, Ming-Hsiu Tsai Dec 2013

Vehicle Counting Without Background Modeling, Cheng-Chang Lien, Cheng-Ta Hsieh, Ming-Hsiu Tsai

Journal of Marine Science and Technology–Taiwan

In general, the vision-based methods for vehicle detection/tracking may face the problems of illumination variation, shadows, or swaying trees. In this study, we propose a novel vehicle detection method without background modeling to overcome the aforementioned problems. First, a modified block-based frame differential method is established to quickly detect the moving vehicles without the influences of rapid illumination variations. Second, the precise vehicles’ regions are extracted with the dual foregrounds fusion method. Third, a texture-based object segmentation method is proposed to segment each vehicle from the merged foreground image blob and remove the shadows. Fourth, based on the concept of …


Determining The Internal Structure Of Cement-Based Materials By Using Mri Techniques, Hsiang-Wei Chiang, Ran Huang, Chia-Jung Tsai Dec 2013

Determining The Internal Structure Of Cement-Based Materials By Using Mri Techniques, Hsiang-Wei Chiang, Ran Huang, Chia-Jung Tsai

Journal of Marine Science and Technology–Taiwan

The primary concerns of the internal structure of cementbased materials involve the distribution of pores, pore size, and the manner in which they are connected. Thoroughly understanding the distributive rules of pores and the approaches to breaking their links can contribute considerably to enhancing the durability of cement-based materials. Several methods are used to measure the pores of cement-based materials; however, they cannot determine the exact location of pores or structural links. Magnetic resonance imaging (MRI) has been widely applied in physical examinations and has matured to the level of being able to obtain 3D images of the organs of …


Microgrid Development Using A Grid Tie Inverter, Hartono Budi Santoso, Budiyanto Budiyanto Dec 2013

Microgrid Development Using A Grid Tie Inverter, Hartono Budi Santoso, Budiyanto Budiyanto

Makara Journal of Technology

The use of renewable energy sources (RES), especially photovoltaic (PV), to meet the demand of electrical energy has been getting a great deal of attention as an alternative solution to electrical energy deficit problems. RES are being applied in power systems in a variety of configurations including microgrid systems. One of the characteristics of a microgrid is capability to supplying power to grid when there is an excess power to supply local load. This research examines the chances of saving power consumption from grid using power converters grid tie inverter (GTI) in a microgrid configuration. The test is done by …


Surface Treatment Of Fly Ash For Improving The Tensile Strength Of Fly Ash/Unsaturated Polyester Composites, Sugiman Sugiman, Paryanto Dwi Setyawan Dec 2013

Surface Treatment Of Fly Ash For Improving The Tensile Strength Of Fly Ash/Unsaturated Polyester Composites, Sugiman Sugiman, Paryanto Dwi Setyawan

Makara Journal of Technology

The paper presents the surface treatment of fly ashes using acid and alkali solution on the tensile strength of the fly ash/unsaturated polyester (UP) composites. Sulfuric acid (H2SO4), hydrofluoric acid (HF) and sodium hydroxide (NaOH) solution with concentration of 0%, 5%, 10%, 15%, and 20% (by weight) were used for surface treatment of fly ashes. Generally, the tensile strength of the treated fly-ash/UP composites shows a significant increase compared to the untreated fly ash. Of all surface treatments studied, the optimum tensile strength was obtained at a concentration of 10%. At this concentration, at a fly ash content of 30% …


Recycling Roof Tile Waste Material For Wall Cover Tiles, Ambar Mulyono, Silfia Mona Aryani, Joko Lulut Dec 2013

Recycling Roof Tile Waste Material For Wall Cover Tiles, Ambar Mulyono, Silfia Mona Aryani, Joko Lulut

Makara Journal of Technology

Prior research on roof tile waste treatment has attempted to find the appropriate technology to reuse old roof tile waste by create wall cladding materials from it. Through exploration and experimentation, a treatment method has been discovered to transform the tile fragments into artificial stone that resembles the shape of coral. This baked clay artificial stone material is then processed as a decorative element for vertical surfaces that are not load-bearing, such as on the interior and exterior walls of a building. Before applying the fragments as wall tiles, several steps must be taken: 1) Blunting, which changes the look …


Synthesis Of Tungsten Oxide Nanowires Onto Ito Glass Using T-Cvd, Tomy Abuzairi, Bohr-Ran Huang, Tzu-Ching Lin Dec 2013

Synthesis Of Tungsten Oxide Nanowires Onto Ito Glass Using T-Cvd, Tomy Abuzairi, Bohr-Ran Huang, Tzu-Ching Lin

Makara Journal of Technology

Tungsten oxide is an n-type semiconductor with interesting physical and chemical properties that make it suitable for various technological applications. Tungsten oxide nanowires were synthesized not only at low temperature but also without the use of any catalysts. The tungsten oxide nanowires were synthesized at 550 °C with tungsten layers onto the ITO glass using thermal chemical vapor deposition (T-CVD). The SEM image shows that the tungsten oxide nanowires are effectively grown with the 200 nm tungsten film. The Raman spectra shoulder at ~690 cm-1 proves the synthesized of tungsten oxide nanowires.


Semiconductor Thermal Neutron Detector, Toru Aoki, Aki Miyake, Takayuki Nakano, Akifumi Koike, Hisashi Morii, Hidenori Mimura Dec 2013

Semiconductor Thermal Neutron Detector, Toru Aoki, Aki Miyake, Takayuki Nakano, Akifumi Koike, Hisashi Morii, Hidenori Mimura

Makara Journal of Technology

The CdTe and GaN detector with a Gd converter have been developed and investigated as a neutron detector for neutron imaging. The fabricated Gd/CdTe detector with the 25 mm thick Gd was designed on the basis of simulation results of thermal neutron detection efficiency and spatial resolution. The Gd/CdTe detector shows the detection of neutron capture gamma ray emission in the 155Gd(n, g)156Gd, 157Gd(n, g)158Gd and 113Cd(n, g)114Cd reactions and characteristic X-ray emissions due to conversion-electrons generated inside the Gd film. The observed efficient thermal neutron detection with the Gd/CdTe detector shows its promise in neutron radiography application. Moreover, a …


Radiation Characteristics Of A Planar Strip Dipole Antenna And A Slot Dipole Antenna For Thz Applications, Catur Apriono, Eko Tjipto Rahardjo Dec 2013

Radiation Characteristics Of A Planar Strip Dipole Antenna And A Slot Dipole Antenna For Thz Applications, Catur Apriono, Eko Tjipto Rahardjo

Makara Journal of Technology

The development of a THz system often requires a device that is used to radiate or detect THz waves. One way to fulfill this requirement is to use an antenna. Therefore, we need to consider the radiation characteristics of an antenna working in the THz region. In this paper, we present simulation study of two dipole antennas, i.e. a planar strip dipole antenna and a slot dipole antenna. The simulation results show that a planar strip dipole antenna has a better radiation efficiency (more than 95%) compared to the slot dipole. It also shows that an efficiency of more than …


The Effect Of Pressing Temperature And Time On The Quality Of Particle Board Made From Jatropha Fruit Hulls Treated In Acidic Condition, Apri Heri Iswanto, Fauzi Febrianto, Yusuf Sudo Hadi, Surdiding Ruhendi, Dede Hermawan Dec 2013

The Effect Of Pressing Temperature And Time On The Quality Of Particle Board Made From Jatropha Fruit Hulls Treated In Acidic Condition, Apri Heri Iswanto, Fauzi Febrianto, Yusuf Sudo Hadi, Surdiding Ruhendi, Dede Hermawan

Makara Journal of Technology

The high of pH of jatropha fruit hulls causes the negative properties of particleboard made from this material. Adjusting the particle acidity and pressing conditions (temperature and time) is among the technical modifications available to improve this particleboard’s properties. Particle acidity has been adjusted in a previous research project, and immersing the particles in acetic acid was found to be the best treatment in this preliminary research. In order to improve the particleboard’s properties, an experiment was conducted to determine the best pressing temperature and time. The objective of the research was to evaluate the influence of pressing temperature and …


Corrosion Behavior Of Tialn Film On Aisi 4140 Steel, T Wongpinij, P Wongpanya, C Euaruksakul, P Photongkam, N Witit-Anun Dec 2013

Corrosion Behavior Of Tialn Film On Aisi 4140 Steel, T Wongpinij, P Wongpanya, C Euaruksakul, P Photongkam, N Witit-Anun

Journal of Metals, Materials and Minerals

The corrosion behavior of uncoated and TiAlN coated on AISI 4140 steel were studied by an electrochemical technique in 3.5 wt% NaCl solution at pH value of 2, 7 and 10 at room temperature. The corrosion potential (Ecorr), pitting potential (Epit), corrosion rate (Rmmy) and passive region in polarization curves were analyzed and compared.After electrochemical testing, samples surface was characterized by scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDX) and X-ray photoemission electron microscopy (X-PEEM). The results indicated that the TiAlN coated samples yielded better corrosion resistance than the uncoated samples. The coated samples had lower corrosion rate …


Ole Miss Engineer 2013-2014 Dec 2013

Ole Miss Engineer 2013-2014

Ole Miss Engineer

No abstract provided.


Dolomite Stabilized Zirconia For Refractory Application : Part-I Phase Analysis, Densification Behavior And Microstructure Of Partial Stabilized Zirconia, R Prasad Rana, P Kumar, A Suvrajit Bal Dec 2013

Dolomite Stabilized Zirconia For Refractory Application : Part-I Phase Analysis, Densification Behavior And Microstructure Of Partial Stabilized Zirconia, R Prasad Rana, P Kumar, A Suvrajit Bal

Journal of Metals, Materials and Minerals

In the continuous casting of steel, Zircon and Zirconia based products are used due to its high thermal stability, excellent erosion resistance, self-opening, consistent casting speed and resistance to oxygen lancing during casting for removal of inclusion clogging and to streamline the flow. Higher casting sequences of molten steel CaO or MgO stabilized zirconia nozzles were being used and for industrial application point of view, dolomite stabilized zirconia (DSZ) could be a better substitute for the stabilization of zirconia. DSZ samples were prepared having 3,4,5,6 and 7 mole % of dolomite by solid state route using high purity monoclinic zirconia …


Mineralogical Characterization Of Pozuzo District's Soils Through Physical Techniques, M L Cerón Loayza, J B. Cabrejos, F Reyes Navarro Dec 2013

Mineralogical Characterization Of Pozuzo District's Soils Through Physical Techniques, M L Cerón Loayza, J B. Cabrejos, F Reyes Navarro

Journal of Metals, Materials and Minerals

We introduce a study on soils in three different fields of plantations in Pozuzo District, Oxapampa province, Peru. Two of the fields are cultivated and the third one has a degradation problem. In situ, in all, we collected 29 samples in the three plantations. We utilized analytical and physical techniques, namely, energy dispersive X-ray fluorescence, X-ray diffractometry, and transmission Msbauer spectroscopy; we complemented our research with a physical-chemical analysis to determine texture, pH, content of organic matter and cation interchange capacity. For all analyzed samples, the results of the analysis by energy dispersive X-ray fluorescence show the presence of the …


Scitech Book News Reviews, Susan Fingerman Dec 2013

Scitech Book News Reviews, Susan Fingerman

Sci-Tech News

No abstract provided.


Heat Treatment Of Steel Parts In Different Media, Sc Maidargi, V Rani Dec 2013

Heat Treatment Of Steel Parts In Different Media, Sc Maidargi, V Rani

Journal of Metals, Materials and Minerals

This study reports an investigation of the effect of different media (oil and polymer) on the properties of different grade steel parts. Steel parts after manufacture, will not have the desired properties like wear resistance, tensile strength, surface and core hardness. To attain these, heat treatment processes like Case Hardening (CH) or Through Hardening (TH) were carried out in sealed quench furnace and rotary furnace. The microstructure of the steel part influences the hardness of the same. The required microstructure is Fine Tempered Martensite (FTM) and the Quench media has a very important role in achieving this. Using different grades …


Fabrication Of Chitosan/Titanium Dioxide Composites Film For The Photocatalytic Degradation Of Dye, P Norranattrakul, K Siralertmukul, R Nuisin Dec 2013

Fabrication Of Chitosan/Titanium Dioxide Composites Film For The Photocatalytic Degradation Of Dye, P Norranattrakul, K Siralertmukul, R Nuisin

Journal of Metals, Materials and Minerals

The investigation of the chitosan film as a polymer matrix for titanium dioxide (TiO2) dispersion was carried out. Chitosantitanium dioxide composite films were prepared by solution casting, using Chitosan, TiO2, Arquad T50 HFP as surfactant. The mixture of 1.0 g chitosan in 100 mL acetic acid was prepared, subsequently with the addition of TiO2. The solution was then cast onto an acrylic mold and allowed to air-dry. The external morphology of the composite film revealed the high dispersion of TiO2 in the polymer matrix. Three types of crosslinking agent; glutaraldehyde, citric acid, and itaconic acid were studied. It was found …


Sio2-Included Cesium Polyoxotungstate Catalysts For Oxidation, W Trakarnpruk, W Kanjina Dec 2013

Sio2-Included Cesium Polyoxotungstate Catalysts For Oxidation, W Trakarnpruk, W Kanjina

Journal of Metals, Materials and Minerals

SiO2-included cesium polyoxotungstate catalysts were synthesized by a sol-gel method and characterizied by FTIR, XRD and N2 adsorption isotherms. XRD patterns prove that the cesium polyoxotungstate is uniformly dispersed in the silica network. The catalysts were used in oxidation of cyclohexane with H2O2. The products are cyclohexanol and cyclohexanone. The catalysts prepared by using a copolymer surfactant show higher surface area and exhibit higher activity. These catalysts are truly heterogeneous and can be reused at least 3 times.


Crystallization Of Carnallite From Kcl-Mgcl2 Brine Solutions By Solvent Evaporation Process And Its Structural And Mechanical Characterization, J Podder, S Gao, R W Evitts, Rw Besant, D Matthews Dec 2013

Crystallization Of Carnallite From Kcl-Mgcl2 Brine Solutions By Solvent Evaporation Process And Its Structural And Mechanical Characterization, J Podder, S Gao, R W Evitts, Rw Besant, D Matthews

Journal of Metals, Materials and Minerals

Carnallite crystals have been synthesized from brine solutions at room temperature (23C) by solvent evaporation growth technique to show the effect of the concentration of potassium chloride (KCl) and magnesium chloride (MgCl2) on the growth, structural and mechanical properties of the crystal. Transparent and pseudo-hexagonal shape carnallite crystals with the dimension of 4 5 2 mm to 16 13 3 mm were grown. The crystals were characterized by powder X-ray diffraction and the lattice parameters were found to be a = 9.598 b = 16.141and c = 22.519 space group: Pnna, Z: 12, ? = ? = ? = 90 …


Effect Of Heat Treatment On Phase Transformation Of Tio2 And Its Reflectance Properties, K Archaapinun, N Witit-Anun, P Visuttipitukul Dec 2013

Effect Of Heat Treatment On Phase Transformation Of Tio2 And Its Reflectance Properties, K Archaapinun, N Witit-Anun, P Visuttipitukul

Journal of Metals, Materials and Minerals

Titanium dioxide (TiO2) anti reflection coating film applied for solar cell application, gains more interest due to the insufficient energy problems today. Titanium dioxide can be found in several forms, and the most stable phase is rutile. This research aims to study effect of heat treatment on phase transformation of TiO2 and its effect on reflectance property. Titanium dioxide film was coated on silicon wafer by DC magnetron sputtering to obtain 190 nm and 420 nm thicknesses. Then, it was heat treated at 900C for 1 and 4 hours under ambient atmosphere. Phases and surface morphologies before and after heat …


Investigation Of Supersaturated Silver Alloys For High Hardness Jewelry Application, S Praiphruk, G Lothongkum, E Nisaratanaporn, B Lohwongwatana Dec 2013

Investigation Of Supersaturated Silver Alloys For High Hardness Jewelry Application, S Praiphruk, G Lothongkum, E Nisaratanaporn, B Lohwongwatana

Journal of Metals, Materials and Minerals

Sterling silver is one of the most widely used precious metal alloys in jewelry industry. 92.5 wt% silver content is the standard for sterling products, while 7.5 wt% is reserved for other alloying elements. Because the mechanical properties of pure silver such as yield strength and hardness are extremely low. In the bounds of 7.5 wt% solute addition, different approaches have been introduced in order to improve the properties of sterling silver. For example, to increase the hardness of the jewelry pieces, metallurgists introduced age hardening, cold working, and surface treatments. We reported on the trend of intrinsic hardness increase …


Comparison Of Ball-On-Disc And Taber Wear Tests In Assessing Wear Performance Of Electrolessly-Deposited Alloys, K Theeratatpong, S Danchaivijit, Y Boonyongmaneerat Dec 2013

Comparison Of Ball-On-Disc And Taber Wear Tests In Assessing Wear Performance Of Electrolessly-Deposited Alloys, K Theeratatpong, S Danchaivijit, Y Boonyongmaneerat

Journal of Metals, Materials and Minerals

In the industry, a Taber wear test is commonly employed to assess the wear resistance of coatings, which are applied on a panel of relatively large scales. On the other hand, other wear testing methods, such as ball-on-disc, is preferred in laboratory settings, as they require smaller test specimens and can determine coefficient of friction. In this study, we systematically compare the differences of Taber wear and ball-on disc by evaluating with an electrolessly-deposited Ni-P alloy systems. The Taber wear shows purely abrasive wear, whereas the ball-on-disc test offers a complex blend of wear mechanisms, and provides the coefficient of …


Wax Pattern Shrinkage Project Summary, David Bishop, Perry Carter Nov 2013

Wax Pattern Shrinkage Project Summary, David Bishop, Perry Carter

Journal of Undergraduate Research

Purpose: The purpose of this project was to better understand the sources of variation that influence the shrinkage of wax patterns in investment casting. With a better understanding of the variation, manufacturers will be able to produce parts that have more precise dimensions.


The Dam Truths Of Glen Canyon, Jeffrey D. Bennion, Dr. M. Brett Borup Nov 2013

The Dam Truths Of Glen Canyon, Jeffrey D. Bennion, Dr. M. Brett Borup

Journal of Undergraduate Research

The Glen Canyon Dam was completed by the Bureau of Reclamation in 1963 as the main feature of the Colorado River Storage Project. The purposes of the dam were to regulate the flow of the Colorado River, store water for consumptive use, provide for the reclamation of arid and semi-arid land, control floods, and generate hydroelectric power (U.S. Department of the Interior, 1995). Since the dam was completed prior to enactment of the National Environmental Act, no environmental impact statement was filed regarding its construction and operation. Many environmentalist groups, most recently the Sierra Club, have lobbied for the removal …


Synchronous Data Link Control Communication Chip, C. Alva Barney, Dr. Doran K. Wilde Nov 2013

Synchronous Data Link Control Communication Chip, C. Alva Barney, Dr. Doran K. Wilde

Journal of Undergraduate Research

In conjunction with the ORCA research grant I was able to design, layout and simulate an integrated Synchronous Data Link Control (SDLC) communication chip. SDLC communication chips are commonly used to transfer data between computers in serial bit-wise transmission. Extensions of the SDLC are used in high speed data links and satellite communication. In addition, this project was accompanied with full web documentation such that the VLSI Design Class (ECEn 451) can leverage my research and design as a class project.