Hoang-Tuan Vu, Chih-Chiang Yang, Ba-Son Nguyen, Y. Su
{"title":"Hybrid PVK: OXD-7: QDs Emitting Layer for High Color Purified Quantum Dot Light Emitting-Diode","authors":"Hoang-Tuan Vu, Chih-Chiang Yang, Ba-Son Nguyen, Y. Su","doi":"10.1109/GTSD.2018.8595499","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595499","url":null,"abstract":"In this paper, we proposed a novel hybrid quantum dot emitting layer (QD EML) for the efficient quantum dot light-emitting diodes (QLEDs). This proposed hybrid emitting layer consisted of a composite polymer with poly (9-vinlycarbazole) (PVK) and 1,3-bis[(4-tert-butylphenyl)-1,3,4oxadiazolyl]phenylene (OXD-7) in the weight ratio of 7:3 and high quantum yield CdSe@ZnS/ZnS quantum dots. By using PVK as hole transport and OXD-7 as electron transport polymer, both hole and electron was supported to inject into QD efficiently. Consequently, the maximum current efficiencies of 7.9 cd/A was achieved in QLEDs with the hybrid EML, which was $sim 250$ % improvement over the bared EML-device. Moreover, high color purity and wavelength stable green QLEDs with peak wavelength of 536 nm was also obtained.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123917443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Theoretical and Experimental Study of Intermittent Absorption Refrigeration System","authors":"N. Nguyen, Q. Hoang, Hiep-Chi Le, H. Hoang","doi":"10.1109/GTSD.2018.8595599","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595599","url":null,"abstract":"In the absorption refrigerations, intermittent absorption refrigeration system is a bright candidate for widespread application because of the simplicity of fabrication, operation, and utilization of large solar power in Vietnam This paper presents the relationship of optimum generation temperature to required cooling and ambient temperature in Vietnam In addition, the concentration of the feed solution in accordance with the evaporation temperature achieved and evaporation requirements are also determined The results were found and evaluated with other similar studies by other authors. In order to reach this target, the simulation related to intermittent absorption refrigeration system were developed. Based on these simulations, the theoretical studies were done for intermittent absorption refrigeration system in order to narrow the working area where the experiments later focused on. The results of this study will be the basis for subsequent application research.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126274729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on Heat Exchanger between Water with Air in an Intercooler Based on CFD","authors":"Cuong Duong Quoc, T. L. Dinh, Thang Dao Trong","doi":"10.1109/GTSD.2018.8595568","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595568","url":null,"abstract":"The purpose of this paper is to present the numerical simulation on heat exchanger between the hot air with cold water in an intercooler using perpendicular flow plate fins. In this paper, the structural characteristics of plate fin in the intercooler were analyzed and the finite volume model in computational fluid dynamics fluent software was established. The structured grid is used to mesh. The finite volume model is imported to Fluent before simulation. The distributions of inlet-outlet temperature and pressures of intake air and coolant in two channels of intercooler are shown in the result. The heat transfer rate from air to water was achieved for this intercooler heat exchanger. In addition, the simulation result provides a scientific basis for structure and performance optimization to intercooler on the engine.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125790755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. H. Huu, Duc Tran Cong Toan, T. Huu, H. T. T. Thu
{"title":"Effects of Infill, Infill Patterns and Number of Perimeter Shells on Casting Patterns Fabricated Using FDM Method","authors":"N. H. Huu, Duc Tran Cong Toan, T. Huu, H. T. T. Thu","doi":"10.1109/GTSD.2018.8595703","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595703","url":null,"abstract":"Rapid prototyping has been the up-and-coming technology to replace traditional manufacturing processes for several decades. However, the cost of producing a rapid prototyping machine that’s able to create a model using metal is too high to apply to low volume production. Therefore, one of the focal points of rapid prototyping is producing patterns for investment casting processes, called rapid casting. Fused deposition modelling (FDM) is a rapid prototyping process which forms a part by continuously melts plastic filaments such as ABS and PLA layer by layer. FDM is a method frequently used in rapid casting. There are two main problems with rapid casting, the cracking of mould shells during the burnout process and patterns incompletely burns out, leaving residual ash and releases corrosive by-products which affect the shells. In this study, we use three parameters to determine their effects on the amount of residual ash the patterns leave behind: Number of perimeters shells, infill percentage and infill pattern. ABS patterns fabricated using FDM method are used because ABS has considerably higher burnout temperature amd is used more frequently in industrial processes, previous studies have also shown that semi-hollow ABS plastic patterns have better dimensional accuracy and surface roughness compared to PLA plastic patterns. After that, we trained an Artificial neural network (ANN) and let it predict the outcomes of the same experiments and compared the results to that of Taguchi’s method predictions using the mean absolute percentage error (MAPE). The results indicate that the predicted outputs of the ANN are very close to the expected output with high reliability (95.218%). ANN method also has a lower MAPE than Taguchi’s method, highlighting that ANN method is a reliable alternative method to accurately predict the relationship between the chosen parameters and the results.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126062849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Design of an VIAM-USVI000 Unmanned Surface Vehicle for Environmental Monitoring Applications","authors":"Ngoc-Huy Tran, Tu-Cuong Nguyen, Van-Tao Tran, Vuong-Chi Nguyen, Thanh-Nam Nguyen","doi":"10.1109/GTSD.2018.8595624","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595624","url":null,"abstract":"Unmanned surface vehicles (USV) has become popular around the world with their capabilities in complicated and low-cost applications, also reduce the danger to humans especially in the environmental field. The environmental pollution situation is appearing more and more anywhere in the world, a large effect on the lives of people, economic development and national security. With that requirement, the design and implementation of USV systems is underway urgently but a few results have been achieved as expected. This article describes a USV’s design with flexible structure, easily integrated sensors for a range of environmental monitoring applications, and the developed control algorithm verified in simulation and experiment. Also, the hardware architecture of the control system is presented and the functions of all parts are clarified. And thence, the simulation and experiment results prove that the developed control system, strategies for waypoint guidance using light of sight (LOS) algorithm and PID controller have good performance and the feasibility, reliability of the designed control system.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124977307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Navigating Self-Driving Vehicles Using Convolutional Neural Network","authors":"Minh-Thien Duong, Truong-Dong Do, M. Le","doi":"10.1109/GTSD.2018.8595533","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595533","url":null,"abstract":"In this paper, a method for navigation of self-driving vehicles is proposed. Although the research for this problem has been performed for several years, we noticed that the elevated accuracy results have not been achieved yet. Therefore, the method using a convolutional neural network (CNN) for training and simulation of unmanned vehicle model on the UDACITY platform has been made. Details, we used three cameras mounted in front of a vehicle to follow three directions were left, right and center position to collect data. The data are the images that captured from three cameras. The number of samples image is 15504. In this research, the label with two parameters are the steering angle and speed from each image would also be created. After collecting the data, these parameters will be achieved by training CNN used to navigate the vehicle. With the combination of three cameras, the accuracy of this navigation task is improved significantly. When vehicle deviates to the left, we will compute the error of the steering angle value between the middle and left position. Afterward, the steering angle value will be adjusted to control the vehicle could run in the center of the lane. Similarly, in the case when vehicles deviate to the right. Based on the simulation platform of UDACITY, we simulated and obtained the result with accuracy was 98, 23%.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130915750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Environmental Condition Dependent Electrical Resistivity of High Performance Fiber-Reinforced Concretes*","authors":"Duy‐Liem Nguyen","doi":"10.1109/GTSD.2018.8595526","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595526","url":null,"abstract":"High-performance fiber-reinforced concretes (HPFRCs), including ultra-high-performance fiber-reinforced concretes (UHPFRCs) refers to smart construction materials those can monitor themselves by determining their electrical resistivity under loading, i.e., the electrical resistivity importantly governs the such smart property of HPFRCs. In this research work, the influences of environmental condition on the electrical resistivity of HPFRCs were experimentally reported. The electrical resistivities of HPFRCs were measured under controlled temperature and relative humidity using a chamber machine. As the temperature or relative humidity increased, the electrical resistivity of the studied HPFRCs clearly decreased. The electrical resistivities of cement-based composites were generally dependent much upon temperature and relative humidity.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122452945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Tra Catfish Oil Production: Phospholipid Removal Using Citric Acid and Bleaching Using Activated Carbon","authors":"P. T. Hoan, T. K. Son","doi":"10.1109/GTSD.2018.8595528","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595528","url":null,"abstract":"Tra catfish (Pangasianodon hypophthalmus) is widely cultivated in the Mekong Delta Region, Vietnam, with mainly production of frozen fillets. Crude oil was extracted from tra catfish fat, a by-product, by hot water. Crude oil has phosphorus content of 18.1 mg/kg, Abs $_{mathbf {228nm}}$of 1.07, melting and solidification points of 33.8$^{mathbf {o}}textbf{C}$ and 24$^{mathbf {o}}textbf{C}$, respectively. After treatment stages (degumming using citric acid, neutralization, winterization, dewaxing, bleaching using activated carbon and deodorization), chemical and physical properties of refined oil have many advantaged changes. Respectively, phosphorus content, Abs$_{mathbf {228nm}}$, melting and solidification points were reduced to 3.84 mg/kg, 0.52, $10.2 ^{circ}mathrm {C}$ and $- 2.0 ^{circ}mathrm {C}$. Besides, quality parameters such as peroxide value (2.66 m.eq/kg), iodine value (66.85 g/100g), and saponification value (152 mg KOH/g) were analytical measurements. Moreover, total content of unsaturated fatty acid was 59.7% including palmioleic, oleic, linoleic, $gamma $-linolenic, paullinic, eicosadienoic, dihomo-$gamma $-linolenic, erucic acids. Refined tra catfish oil is pale yellow, liquid state at ambient temperature without strange odor. Obviously, our treatments elevated quality of tra catfish oil to reach the Codex 2017 standard.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122920135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hojin Jeong, J. Baek, Namhun Kim, Geunsoo Lee, S. Kwak, Chihyung Ahn
{"title":"Analysis and Design of Distributed and Concentrated IPMSM for Compressor in Electric Vehicles","authors":"Hojin Jeong, J. Baek, Namhun Kim, Geunsoo Lee, S. Kwak, Chihyung Ahn","doi":"10.1109/GTSD.2018.8595683","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595683","url":null,"abstract":"According to the change of traction system from combustion engine to electric motor for electric vehicles, the compressor in air conditioner needs to be replaced to the separated system. This paper compares the performance of distributed and concentrated wound interior permanent magnet synchronous motor (IPMSM) for compressor. Each IPMSM model is analyzed by 2D FEA for cogging torque, output torque and back-EMF. Furthermore, the analysis of torque ripple characteristics, loss calculation and saliency ratio are performed.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121028143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Diatom Biosilica: from Biosilicification to Bone Tissue Applications","authors":"Thi Duy Hanh Le","doi":"10.1109/GTSD.2018.8595697","DOIUrl":"https://doi.org/10.1109/GTSD.2018.8595697","url":null,"abstract":"Bone tissue engineering has attracted a lot of research attention recently as an interdisciplinary subject aiming to restore, maintain, and improve the functions of bone. The procedure of bone tissue engineering is based on the combination of three main factors, including biomaterials, cells and bioactive molecules. Interestingly, the natural bone structure is quite similar to diatom biosilica and both of them are formed from biomineralization. Following the development of technology, mimicking natural phenomenon have become upward trend of engineered bone scaffold materials. Here, we summarize condensed knowledge about diatom biosilica formation, bone tissue engineering and recent advanced applications of diatom biosilica for bone tissue engineering.","PeriodicalId":344653,"journal":{"name":"2018 4th International Conference on Green Technology and Sustainable Development (GTSD)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122258947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}