ASEAN Engineering Journal最新文献

{"title":"COMPARATIVE STUDY OF ELGAMAL AND LUC ALGORITHM IN CRYPTOGRAPHIC KEY GENERATION","authors":"Nur Rochmah Dyah Puji Astuti, Dimas Panji Setiawan, D. C. Hakika","doi":"10.11113/aej.v13.19184","DOIUrl":"https://doi.org/10.11113/aej.v13.19184","url":null,"abstract":"In today’s era of digital, data security in communication channel becomes important factor to be considered during exchange of information. Cryptography is one of techniques to send and receive information securely through an insecure channel. Based on the number of keys used, encryption methods are categorized as symmetric and asymmetric cryptography. Compared to symmetric cryptography that often suffers from key management issues, asymmetric cryptography delivers higher level of data security. Thus, asymmetric cryptography is more preferred when security if the priority. To determine suitable algorithm, three essential aspects should be considered: security, speed, and prime numbers. This study aims to compare the application of asymmetric cryptographic algorithms between ElGamal and LUC algorithms in the key generation process. A comparative analysis of these two algorithms was conducted by evaluating the processing speed and prime numbers during key generation process to determine the advantages and drawbacks from ElGamal and LUC algorithms. The application in this study was developed using PHP programming language by following the Waterfall Model. Application testing involved two kinds of tests: (i) Black Box test and (ii) System Usability Scale (SUS) test. Results show the application developed from this study successfully performed the encryption, decryption, and checking of prime numbers from ElGamal and LUC algorithms. It displayed ciphertext, plaintext, and the speed of the encryption and decryption process from both methods. The black box test showed that all application functions follow the user's needs, while System Usability Scale (SUS) test obtained an average score of SUS interpretation of 83.75. This value means the adjective ratings was “excellent”, the grade scale was “B”, and the acceptability range was “acceptable”. It is concluded that the LUC algorithm superior to ElGamal in terms of the speed of encryption process. However, during the decryption process the LUC algorithm responded slower than ElGamal.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314869","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":"SHEAR STRENGTH OF SOFT CLAY REINFORCED WITH ACRYLONITRILE BUTADIENE STYRENE (ABS) COLUMN","authors":"Thevagar Nedunchelian, Muzamir Hasan","doi":"10.11113/aej.v13.20136","DOIUrl":"https://doi.org/10.11113/aej.v13.20136","url":null,"abstract":"The troublesome soil that many geotechnical engineers encounter in the sector is clay soil. It presents a major danger to the foundations of light structures. Granular columns have proved beneficial in resolving foundation stabilisation and settling issues, making soft clay more appropriate for foundation building. This study aims to determine whether adding acrylonitrile butadiene styrene (ABS) to kaolin clay increases its shear strength. The physical, mechanical, and morphological properties of the materials used in this research (i.e., kaolin and ABS) must first be identified. The soft clay kaolin was strengthened with ABS columns and tested using the unconfined compression test (UCT) and the unconsolidated undrained test (UUT). The diameter of the columns used in this study was 8, 12, and 16 mm, while the penetration depth ratio used was 0.5, 0.75, and 1.0. The highest improvement in shear strength occurred at a height penetration ratio of 0.5 with values of 102.94%, 48.56%, and 50.02%. The UCT results demonstrated a decrease in the volume of the replacement ratio, followed by an increase in the height of the column. The UUT was conducted to evaluate the soft clay's shear strength when reinforced with an ABS column. The cell pressure used was 50, 100, and 200 kPa with the same column diameter specification as the UCT. The friction angle, υ, increased significantly from 8.92% to 18.21%. Furthermore, there was an improvement in cohesiveness, c, which increased from 4.54% to 45.45%. The results show that installing ABS columns improves the strength and compressibility of clay samples.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314463","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":"LIFE CYCLE ASSESSMENT OF NUTMEG OIL SUPPLY CHAIN","authors":"Trisna Trisna, Muhammad Zakaria, M. A. Saptari","doi":"10.11113/aej.v13.18186","DOIUrl":"https://doi.org/10.11113/aej.v13.18186","url":null,"abstract":"The nutmeg oil supply chain has several members, including farmers, collectors, traders, processing industries, and exporters. Every activity along the nutmeg supply chain has an environmental impact due to resources usages such as raw materials, water, and energy.  This study aimed to measure the environmental impacts along the nutmeg oil supply chain using a life cycle assessment framework. The effects assessed in this study are greenhouse gas emissions, global warming potential (GWP), and acidification potential (AP). The research stages involve preliminary study, objectives and scope determination, data collection, environmental impacts measurement, and interpretation. The results showed that the most significant environmental impact was the distillation process with greenhouse gas emissions are 22,400 kg CO2, 60kg CH4, and 0.8 kg N2O, GWP of 23,908 kg CO2 (eq), and AP of 34 kg SO2 (eq). Based on identifying of environmental impacts, it is necessary to improve the existing boiler combustion system by using a closed burning system. These study results are the basis for decision-makers to improve the production process, design green supply chain management, and reduce environmental impacts.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314900","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":"TECHNO-ECONOMIC ANALYSIS OF TRIANGULAR ROOFTOP SOLAR PV MODEL/PLN ON-GRID HOUSEHOLD SCALE IN INDONESIA","authors":"Aris Ansori, Made Arsana, Indra Herlamba Siregar, Heru Adiwibowo, Isnur Haryuda","doi":"10.11113/aej.v13.19858","DOIUrl":"https://doi.org/10.11113/aej.v13.19858","url":null,"abstract":"The use of solar PV as an alternative to fulfill household-scale electricity needs has begun to be widely developed. However, the problem of investment costs and the location of solar PV placement for household scale is still a challenge in its implementation. The construction model of rooftop solar PV can affect the investment cost and performance of solar PV. In this paper, the triangle model of rooftop solar PV on grid with PLN (PT. Perusahaan Listrik Negara) electricity network is studied in terms of technology and economics to determine the feasibility of implementing 900 VA household-scale power plants. Testing the application of solar PV technology under solar radiation conditions in the city of Surabaya, Indonesia as a case study. Calculation of electricity production, energy savings, energy sales, and energy purchases to determine technological feasibility as well Net Present Value (NPV), Benefit Cost Ratio (BCR), and Payback Period (PP) to determine the level of economic feasibility. The results of the research of 1,5 KWP (kilowatt peak) solar PV technology on a household scale are able to meet energy needs and reduce PLN electricity purchases to 0% and can sell electrical energy by 13.96% / year of the total electrical energy produced. In addition, the NPV, BCR with a value greater than zero, and PP of 8.6 is less than 15 years which is the service life of solar PV, so solar PV/ PLN on grid is feasible to be implemented for household scale power generation models.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314594","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":"FLOWABILITY PROPERTIES OF BINARY POWDER MIXTURES CONTAINING DATES POWDER (PHEONIX DACTYLIFERA) MIXED WITH LACTOSE MONOHYDRATE AND MICROCRYSTALLINE CELLULOSE BASED EXCIPIENTS","authors":"Fara Wahida Ahmad Hamidi, Mohd Shamsul Anuar, A. S. Baharuddin, M. A. P. Mohammed, Mohd Nazli Naim, S. Mohd Tahir","doi":"10.11113/aej.v13.18784","DOIUrl":"https://doi.org/10.11113/aej.v13.18784","url":null,"abstract":"Powder flow is important in powder processing industries to obtain a quality by design product and efficient manufacturing process. Poor powder flowability can cause problems especially during high speed tableting and capsule filling processes. In this study, dates powder (DP), lactose monohydrate powder, and two types of microcrystalline-based powder excipients evaluated for their flow properties as a binary mixture. Angle of repose (AoR), Hausner ratio (HR) and Carr index (CI) were used to characterize the extent of the powder cohesion. The results show that generally, as particle size increases, values of AoR generally decreases, depicting lower flowability characteristics with decreasing binary mixture particle size. However, HR and CI flowability indicators give contrasting flowability characteristics for the binary mixture containing lactose monohydrate and dates powder.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314651","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":"DETECTION MODEL FOR FAKE NEWS ON COVID-19 IN INDONESIA","authors":"Achmad Pratama Rifai, Y. P. Mulyani, Rian Febrianto, H. Arini, Titis Wijayanto, Nurul Lathifah, Xiao Liu, Jianxin Li, Hui Yin, Yutao Wu, Rami Mohawesh","doi":"10.11113/aej.v13.19648","DOIUrl":"https://doi.org/10.11113/aej.v13.19648","url":null,"abstract":"Today, fake information has become a significant problem, exacerbated by the acceleration of access to information. The spread of fake information has a dangerous impact, especially regarding global health issues, for example COVID-19. People can access various resources to obtain information, including online sites and social media. One of the methods to control the spread of false information is detecting hoaxes. Many methods have been developed to identify hoaxes; most previous studies have focused on developing hoax detection methods using data from a single source in English. The present study is carried out to detect fake news in Indonesian language using multiple data sources, including traditional and social media in the context of COVID-19. The study uses Long Short-Term Memory (LSTM) and the Robustly Optimised Bidirectional Encoder Representations from Transformers Pre-Training Approach (RoBERTa). The LSTM approach is used to develop four different architectures that varied based on: (1) the use of text-only versus the use of both title and text; (2) the number of LSTM and dense layers; and (3) the activation function. The LSTM model with text-only data, a single LSTM layer and two dense layers, outperformed other LSTM architectures, achieving the highest accuracy of 92.17%. The LSTM models require a considerably short training time of 23–27 minutes for 3,847 articles and has a detection time of 3.8–4.1 ms per article. The RoBERTa classifiers outperformed all LSTM models with an accuracy of over 97% and a significantly better training time, with a margin of more than 50% compared to LSTM classifiers, although it had a slightly longer test time. Both LSTM and RoBERTa models outperformed the Naïve Bayes and SVM benchmark methods in terms of accuracy, precision, and recall. Therefore, this study shows that both LSTM and RoBERTa methods are reliable and can be reasonably implemented for real-time fake news detection.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314836","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":"CUTTING ANALYSIS ON HORIZONTAL DRIILING USING CUTTING CARRY INDEX, CUTTING TRANSPORT RATIO AND CUTTING CONCENTRATION IN ANNULUS METHOD ON A WELL G FIELD S","authors":"A. R. R. Wastu, R. Husla, Ghanima Yasmaniar, P. S. Yulia, S. Samsol, O. Ridaliani","doi":"10.11113/aej.v13.20028","DOIUrl":"https://doi.org/10.11113/aej.v13.20028","url":null,"abstract":"The basic principle of the drilling operation is to grind the rock formations with bits which will later become drill cuttings. In this process, fluid is needed as a conveying medium, commonly known as drilling mud, because the deeper the drilling, the more drill flakes are produced. One of the prominent functions of drilling mud is lifting the drill shale up to surface. The purpose of this analysis is to quantitatively prove whether the cutting has been successfully lifted to the surface or not, and to determine the elements of the fluid’s physical properties and the drilling mud fluid’s rheology. This analysis was carried out using three methods including; the cutting carry index, which the value required is greater than one; the cutting transport ratio, which the value required is greater than 50%; and the cutting concentration in annulus, which the value required is less than 5%. If the value of the quantitative calculation already has a value above the standard, it can be concluded that the drill cuttings can be lifted optimally. The value of the cutting carry index has to be greater than one, because if it is less than one the solid value in the mud is still lacking, causing a low density so it will affect the carrying capacity of cutting in 1 gal of mud. The value of cutting concentration in annulus should not be more than 5, it is feared that if it exceeds this limit, it can affect the rate of penetration and can cause a stuck. As for the value of the cutting transport ratio should not be less than 50% because if it is less than that the hydrostatic pressure below will be large and can cause formation fractures. In this case, we will discuss the analysis of cutting removal on the 8.5 inch route at 4290 to 5174 ft depth, with a slope of 66.29o from the starting point of the borehole.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314512","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":"PROPERTIES AND CHARACTERIZATION OF MAGNESIUM OXYCHLORIDE CEMENT AS CARBON CAPTURE MATERIAL","authors":"Andrie Harmaji, Eva Febrina, Salsabila Ansari Putri","doi":"10.11113/aej.v13.19647","DOIUrl":"https://doi.org/10.11113/aej.v13.19647","url":null,"abstract":"Greenhouse gas emissions produced by steam-powered electric plants can trigger damage to the atmosphere and increase the average surface temperature below it, resulting in global warming as a manifestation of the operation of power plants. A material is needed to capture carbon dioxide (CO2) gas produced by the power plant. Magnesium oxychloride (MOC) cement, commonly called Sorel cement, has the potential to be used as a carbon capture material. MOC is synthesized from magnesium oxide (MgO), magnesium chloride (MgCl2), and water (H2O). This study aimed to find the optimum ratio of MgO:MgCl2:H2O to produce the MOC with highest mechanical properties ranged from 1:1:1, 2:1:1, and 3:1:1. To determine the performance of the resulting MOC, physical, mechanical, X-ray diffraction (XRD), and scanning electron microscope (SEM) characterization tests were carried out. MOC with the highest mechanical properties was exposed to a high CO2 gas environment to determine its carbon capture performance. The mechanical testing shows that the best ratio of MgO:MgCl2:H2O was 3:1:1. This produces a hardness value of 43 VHN, a compressive strength of 57 MPa, a flexural strength of 46 MPa, and a modulus of elasticity of 2 GPa. The MOC 3:1:1 shows a CO2 gas capture effectiveness of 36% after 7 days, proven by XRD and SEM. The results of the tests carried out show that MOC has the potential to reduce carbon emissions produced by the steam-powered electric plant industry.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314590","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":"A DEEP LEARNING METHODOLOGY FOR PLANT SPECIES RECOGNITION USING MORPHOLOGY OF LEAVES","authors":"Deepti Barhate, Sunil Pathak, Ashutosh Kumar Dubey","doi":"10.11113/aej.v13.19461","DOIUrl":"https://doi.org/10.11113/aej.v13.19461","url":null,"abstract":"Plants play a crucial role in supporting all forms of life on Earth, not just humans but every living organism. Understanding the diverse range of plant species that surround us is essential due to their significance in various aspects of human life, including agriculture, the environment, medicine, cosmetics, and more. Advancements in machine learning and computer vision algorithms have opened possibilities for identifying different types of plant species, both within and across classes. Plant species detection typically involves several steps, such as image acquisition, feature extraction, categorization, and pre-processing. In this study, three datasets—namely Flavia, Swedish, and the intelligent computing laboratory (ICL) dataset—were chosen for experimentation purposes. For feature extraction, three different models were employed: k-nearest neighbour (KNN), naive Bayes (NB), and the visual geometry group (VGG)-16 model. These models were used to extract distinctive features such as shape, texture, venation, and margin from the plant images. A multiclass classification task was conducted to categorize the plant species. Among the models tested, the VGG-16 model consistently demonstrated superior performance in terms of accuracy. Specifically, when using the VGG-16 model, the obtained accuracies were 96.68% for the Flavia dataset, 97.65% for the Swedish dataset, and 96.11% for the ICL dataset.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139314806","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":"GREEN SYNTHESIS AND CHARACTERIZATION OF FE DOPED TIO2 NANOPARTICLES USING LAWSONIA INERMIS LEAF AQUEOUS EXTRACTS AS REDUCTANT FOR PHOTOCATALYTIC ACTIVITY","authors":"Syamsutajri Syamsol Bahri, Zawati Harun, Wan Norhayati Wan Salleh, Rosniza Hussin, Nur Hanis Hayati Hairom, Noor Hasliza Kamaruddin, Hatijah Basri, Nurul Izwanie Rasli, Afiqah Rosman, Mohd Riduan Jamaluddin, Ainun Rahmahwati Ainuddin","doi":"10.11113/aej.v13.19690","DOIUrl":"https://doi.org/10.11113/aej.v13.19690","url":null,"abstract":"Recently, the improvement and advancement in synthesizing nanoparticles via eco-friendly technique have been intensively explored since the used conventional physical and chemical methods always associated to the intensive energy usage and toxic waste pollution Therefore, nanoparticles synthesized from green route technique has initiate an interest among researchers due to its clean and eco-friendliness approach. In this study, the Fe doped TiO2 were synthesized using lawsonia inermis aqueous leaf extracts that act as reducing agent as well as capping and stabilizing agent. The green synthesized powder was then calcined and characterized using XRD, FESEM, EDX, FTIR and UV-Vis while photocatalytic activity was evaluated based on photodegradation efficiency of methylene blue (MB). The new obtained green calcined powder was found to have a crystalline phase (anatase structure) with crystallite size, 6.79 nm identified by XRD. The FESEM test shows the average particle size of the green synthesized calcined Fe doped TiO2 is in the range of 54.5 nm with capping agent (phyto-constituents) authorized by FTIR spectra. From EDX analysis, Fe ions was successfully incorporated into TiO2 compound during synthesis process confirmed by the presence of Fe element. It was observed that the band gap energy for green calcined Fe doped TiO2 is approximately 2.66 eV. The green synthesized calcined Fe doped TiO2 sample presented the highest photocatalytic activity efficiency under uv light irradiation for 3 hour which is 92.2% with only 7.8% of MB remained, this value is slightly higher than that of commercial P25 powder which is 90.7%. In conclusion, the green synthesis technique of using lawsonia inermis as natural resources as reduction agent was able to produce nanoparticles Fe doped TiO2. Moreover, the properties of Fe doped TiO2 nanoparticles has strong potential to be used as a photocatalyst since this sustainable green synthesis technique able to produce better nanoparticles properties as compared to conventional synthesis.","PeriodicalId":36749,"journal":{"name":"ASEAN Engineering Journal","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136081744","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}