Theory of Computing Systems \/ Mathematical Systems Theory最新文献_第6页

Experimental Study of the Chimney Height Variation Against Double Pots Biomass Stove Performance 烟囱高度变化对双锅生物质炉性能影响的实验研究

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-09 DOI: 10.7454/MST.V21I3.3393

F. Faisal, A. Setiawan, W. Wusnah, K. Khairil, Luthfi Luthfi, Mona Fajriana

引用次数: 0

Adsorption of Cu(Ii) Ions in Aqueous Solution Onto Limonia Acidissima Shellbased Activated Carbon: Kinetic and Isotherm Studies 酸性柠檬壳活性炭吸附水溶液中Cu(Ii)离子的动力学和等温线研究

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-09 DOI: 10.7454/MST.V21I3.3461

A. Muslim, S. D. Said, Gita Suci Hariati, Siti Fajar Karina, F. Djuned, Rizka Mulyawan

{"title":"Adsorption of Cu(Ii) Ions in Aqueous Solution Onto Limonia Acidissima Shellbased Activated Carbon: Kinetic and Isotherm Studies","authors":"A. Muslim, S. D. Said, Gita Suci Hariati, Siti Fajar Karina, F. Djuned, Rizka Mulyawan","doi":"10.7454/MST.V21I3.3461","DOIUrl":"https://doi.org/10.7454/MST.V21I3.3461","url":null,"abstract":"Adsorption of Cu(II) ions from aqueous solution using activated carbon prepared from Limonia acidissima fruit shell (LAFS-AC) was conducted in batch mode experiments at pH 5 (±0.15), 100 rpm and 1 atm. The effects of contact time, initial Cu(II) ions concentration, KOH concentration, and adsorption temperature on Cu(II) ions adsorption capacity were investigated. Fourier Transform Infrared Spectroscopy and Scanning Electron Microscopy analyses were performed to investigate the active site and surface morphology of the LAFS-AC, respectively. The Cu(II) ions adsorption was fitted very well (R = 0.94 on average) to the pseudo second-order adsorption kinetic with the adsorption capacity and rate being 25.58 mg/g and 0.07 g/mg.min, respectively at 27 C by the LAFS AC activated using 0.5 M KOH. It was 26.88 mg/g and 0.15 g/mg.min, respectively at 60 C. The Cu(II) ions adsorption followed the Langmuir adsorption isotherm model (LAIM) (R = 0.98 on average). The LAIM adsorption capacity and constant were 26.67 mg/g and 0.03 L/g, respectively at 27 C. It increased dramatically to 0.09 L/g at 60 C. The optimal adsorption condition obtained was the 0.5 M KOH activated LAFS-AC, initial Cu(II) concentration of 509.81 mg/L and 120-min contact time at 60 C with the Cu(II) ions adsorption capacity of 26.95 mg/g.","PeriodicalId":22842,"journal":{"name":"Theory of Computing Systems \\/ Mathematical Systems Theory","volume":"12 1","pages":"129-136"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83522614","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}

引用次数: 1

Innovation of Hydrocarbon Investigation Using Audio-Magnetotelluric in Cepu Field, Indonesia 印尼Cepu油田音频大地电磁勘探油气的创新

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-09 DOI: 10.7454/MST.V21I3.3213

Iqbal Fauzi Aditama, W. Widodo

{"title":"Innovation of Hydrocarbon Investigation Using Audio-Magnetotelluric in Cepu Field, Indonesia","authors":"Iqbal Fauzi Aditama, W. Widodo","doi":"10.7454/MST.V21I3.3213","DOIUrl":"https://doi.org/10.7454/MST.V21I3.3213","url":null,"abstract":"An audio-magnetotelluric (AMT) survey has been performed at Cepu oil field located in Indonesia. The objective of this research is to detect resistivity structures of this important hydrocarbon rock. This research can be classified as an innovation in application of the AMT method for hydrocarbon exploration. The lack of seismic resolution has been provided by the AMT method, especially in the location of sub-basalt and sub-salt plays. In additional, the cost of AMT survey is quite low compared to seismic. The forward modelling is included in this research to understand the measurement data response from a mathematical model. In the field campaign, AMT data were acquired along two profiles in a frequency range of 0.1 to 8000 Hz. Anticlinal structure that has an E-W trend has also been identified by AMT resistivity model. Analyses of the AMT data suggest signatures of hydrocarbon reservoir from the anticlinal structure that indicated by a low resistivity zone. The basement structure is estimated to be located at 1600 m or deeper. This study concludes that, as far as the hydrocarbon prospects are concerned, the AMT results seem to confirm the continuation of the anticlinal structure, which was identified as the primary hydrocarbon prospect in previous studies.","PeriodicalId":22842,"journal":{"name":"Theory of Computing Systems \\/ Mathematical Systems Theory","volume":"83 1","pages":"145-152"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80676434","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}

引用次数: 1

Experimental Study on Automatic Control for Collision Avoidance of Ships 船舶避碰自动控制的实验研究

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-09 DOI: 10.7454/MST.V21I3.3447

D. Paroka, M. Kamil, A. Muhammad

{"title":"Experimental Study on Automatic Control for Collision Avoidance of Ships","authors":"D. Paroka, M. Kamil, A. Muhammad","doi":"10.7454/MST.V21I3.3447","DOIUrl":"https://doi.org/10.7454/MST.V21I3.3447","url":null,"abstract":"Automatic control system is widely applied to control the ship direction or heading angle in accordance with the decided trajectory. Several methods for improving performance of control system have been developed such as ProportionalIntegral-Derivative (PID) control and fuzzy logic based control. Within the last decade, application of automatic control system is not only for ship navigation but also for avoiding collision risk of ships in seaways. This paper discusses the application of automatic control system for avoiding ship collision by free running experiment. Fuzzy logic based control was developed using Mamdani Centroid method to estimate the necessary rudder angle in order to change the ship heading angle. Collision scenario was designed using four fixed obstacles with a certain distance which will be avoided by ship model. The results of free running experiment showed that the automatic control system can minimize the risk against collision or at least provide initial warning that may be faced by the ship. with minimum distance of 3.50 of length between perpendicular. To improve performance of control, external disturbance such as wind and wave should be considered in the design of automatic control system.","PeriodicalId":22842,"journal":{"name":"Theory of Computing Systems \\/ Mathematical Systems Theory","volume":"49 1","pages":"137-144"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77365948","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}

引用次数: 2

Assessment on Heck-Immine Derivatives as Organic Semiconductor Materials heck -亚胺衍生物作为有机半导体材料的评价

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-09 DOI: 10.7454/MST.V21I3.3368

R. Rahamathullah, Lim Keemi, W. Khairul

{"title":"Assessment on Heck-Immine Derivatives as Organic Semiconductor Materials","authors":"R. Rahamathullah, Lim Keemi, W. Khairul","doi":"10.7454/MST.V21I3.3368","DOIUrl":"https://doi.org/10.7454/MST.V21I3.3368","url":null,"abstract":"This paper reports the synthetic, characterization and theoretical evaluation of new class of hybrid Heck-immine system involving mixed moieties of vinylene (C=C) and azomethines (CH=N) which has been successfully integrated into an addition of organic semiconducting materials. The assessment of 4-[(hexyloxyphenyl)methylene]amino)-4’-chlorostilbene (HEXCS) based on Donor (D)-π-Acceptor (A) was evaluated as active semiconductor material candidates via several spectroscopic and analytical techniques. In turn, the investigation of its potential as dopant system in conductive film was successfully deposited on indium tin oxide (ITO) coated substrate via spin coating method. The relationship between electronic and optical properties, chemical modelling at molecular interactions and electrical performances of the designated system were evaluated. In addition, the quantum mechanical calculation proved that the value of energy separation of HEXCS between HOMO and LUMO exhibits 3.09 eV which was in good agreement with the experimental result of optical band gap 3.10 eV. The findings from the thermal and conductivity analysis revealed that the developed film HEXCS exhibited good stability at high temperature and electrical performance with an increasing conductivity up to 0.1531 Scm under maximum light intensity of 100 Wm. Therefore, this proposed type of molecular framework has given an ideal indication to act as semiconductor material candidates potentially use in any designated electronic application.","PeriodicalId":22842,"journal":{"name":"Theory of Computing Systems \\/ Mathematical Systems Theory","volume":"4 1","pages":"115-121"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86464370","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}

引用次数: 0

Indonesia’s Municipal Solid Waste 3R and Waste to Energy Programs 印度尼西亚的城市固体废物3R和废物转化为能源计划

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-09 DOI: 10.7454/MST.V21I3.3536

F. Farizal, R. Aji, A. Rachman, N. Nasruddin, T. Mahlia

{"title":"Indonesia’s Municipal Solid Waste 3R and Waste to Energy Programs","authors":"F. Farizal, R. Aji, A. Rachman, N. Nasruddin, T. Mahlia","doi":"10.7454/MST.V21I3.3536","DOIUrl":"https://doi.org/10.7454/MST.V21I3.3536","url":null,"abstract":"Like most cities in the world, population in Indonesia continues to grow every year. Problems that can arise from this are the increasing amount of municipal solid waste (MSW) production and the growing demand for electricity. To deal with the problems, Indonesian government runs 3R (Reduce, Reuse and Recycle) and WTE (Waste to Energy) Programs simultaneously. 3R program aims to reduce the number of waste, while WTE program aims to generate electricity as an alternative energy source. This study aims to find out the optimal proportion of MSW treated through the 3R and WTE programs. For the purpose, a goal programming model has been developed and solved using LINGO 11. The results showed that the optimal proportion of MSW through the 3R program is 49.90%, 12.37% through WTE program. This leaves 37.73% of waste untreated. The electricity generated from WTE program reached 1,229.695 GWh, total emissions that can be saved is 1,809,208.2 tons CO2 equivalent and total land-use for the programs is 4,036,239.1 m. This study was enriched by performing some scenarios, i.e. adding budget allocation of WTE program, tightening the limit of total emission from waste management and reducing the limit of land-use for waste treatment.","PeriodicalId":22842,"journal":{"name":"Theory of Computing Systems \\/ Mathematical Systems Theory","volume":"106 1","pages":"153-159"},"PeriodicalIF":0.0,"publicationDate":"2018-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89687580","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}

引用次数: 20

Online prediction of battery discharge and flight mission assessment for electrical rotorcraft 电动旋翼机电池放电在线预测与飞行任务评估

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-08 DOI: 10.31274/ETD-180810-5698

A. Alnaqeb

引用次数: 8

Ion Dynamics of Ethylammonium Nitrate by Means of Quasielastic Neutron Scattering 准弹性中子散射法研究硝酸乙铵离子动力学

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-01 DOI: 10.7282/T3-FBNX-JE88

S. R. Huq

引用次数: 0

Structural Transformations in Diluted Micellar and Lamellar Systems 稀释胶束和片层体系的结构转变

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-01 DOI: 10.23860/thesis-zelaya-rincon-blanca-2017

Blanca Zelaya-Rincon

引用次数: 0

Analysis of Dimensionless Scaling Relationships for Rotating Free Flight Bodies 旋转自由飞行体的无量纲标度关系分析

Theory of Computing Systems \/ Mathematical Systems Theory Pub Date : 2018-01-01 DOI: 10.33915/etd.6659

Shawn A. Smearcheck

引用次数: 0