Performance Prediction in a Single-Operator Simulated Surveillance System

1973 ◽  
Vol 15 (4) ◽  
pp. 337-348 ◽  
Author(s):  
Robert G. Mills ◽  
Robert C. Williges
Keyword(s):  
Central Composite Design ◽  
Response Surface ◽  
Surveillance System ◽  
Automatic Tracking ◽  
System Parameters ◽  
Operator Performance ◽  
Single Operator ◽  
Complex Relationships ◽  
Performance Results ◽  
Central Composite

A semiautomatic radar surveillance system was simulated using a time-compressed, real-time cathode-ray tube display. Subjects were required to detect targets entering the surveillance area, initiate automatic tracking of these targets, and reinitiate lost tracks when automatic tracking failed. A within-subject response surface methodology (RSM) central-composite design was employed which permitted simultaneous investigation of the effects of five system parameters on surveillance operator performance. Response surface fits (second-order polynomials) were obtained and analyses of variance were conducted to describe these effects on two dependent measures of performance. Results support the contention that operator performance may be dependent upon complex relationships among the five system parameters tested. Furthermore, an RSM central-composite design provided an efficient method for obtaining data and quantifying these relationships.

scholarly journals Optimization of Eugenol Extraction from Clove Oil using Response Surface Methodology

2015 ◽  
Vol 9 (11) ◽  
pp. 68
Author(s):  
Widayat Widayat ◽  
Hadiyanto Hadiyanto ◽  
Bambang Cahyono ◽  
Ngadiwiyana Ngadiwiyana
Keyword(s):  
Response Surface Methodology ◽  
Optimum Condition ◽  
Central Composite Design ◽  
Response Surface ◽  
Design Method ◽  
Main Process ◽  
Clove Oil ◽  
Design Variables ◽  
Central Composite

The objective of this research was to obtain optimum condition of eugenol production from clove oil using a central composite design method. The main process occured in the eugenol production was saphonification and neutralization processes. In order to optimize these processes, the ratio of NaOH/clove oil and temperature were studied as design variables i.e. ratio of NaOH/clove oil=1:2.5-1:3.5 while temperature was varied between 40 and 60oC. The yield of eugenol was considered as the main response in of this experiment. The result showed that the optimum condition was achieved when the temperature and the ratio of NaOH/clove oil were 50oC and 2.75:1, respectively and the yield was 39.17%.<br />

scholarly journals Pembuatan Biodiesel dari Minyak Sawit Off-Grade Menggunakan Katalis CaO Melalui Proses Dua Tahap

2015 ◽  
Vol 10 (3) ◽  
Author(s):  
Febrina Dwi Putri ◽  
Zuchra Helwani ◽  
Drastinawati Drastinawati
Keyword(s):  
Response Surface Methodology ◽  
Central Composite Design ◽  
Response Surface ◽  
Central Composite

Biodiesel merupakan sumber bahan bakar alternatif yang bisa dihasilkan dari minyak nabati melalui transesterifikasi dengan metanol. Sawit Off-grade merupakan salah satu sumber minyak nabati yang mempunyai potensi untuk digunakan sebagai bahan dasar produksi biodiesel. Reaksi transesterifikasi dilangsungkan dengan bantuan katalis CaO dari cangkang telur yang dikalsinasi pada suhu 900ºC selama 2 jam. Tujuan dari penelitian ini adalah untuk memproduksi biodiesel dari minyak sawit off-grade melalui reaksi dua-tahap, melihat performa katalis Cao terhadap reaksi transesterifikasi, serta mempelajari pengaruh temperatur reaksi, rasio mol minyak:metanol dan konsentrasi katalis terhadap yield biodiesel pada reaksi transesterifikasi. Esterifikasi dilakukan pada suhu 60°C dengan perbandingan mol minyak:metanol 1:12 menggunakan 1%wt katalis H2SO4. Asam lemak bebas (ALB) tereduksi dari 16,18% menjadi 0,6%. Reaksi transesterifikasi dilakukan dengan variasi perbandingan mol minyak:metanol 1:7, 1:9, 1:11, konsentrasi katalis 2%wt, 4%wt, 6%wt, serta suhu reaksi pada 50ºC, 60ºC, 70ºC selama 2 jam. Data yang diperoleh diproses dengan menggunakan response surface methodology (RSM), sedangkan jumlah eksperimen ditentukan dengan central composite design (CCD). Yield yang diperoleh pada penelitian ini yaitu sebanyak 62,30%-87,41%. Yield optimum dihasilkan pada reaksi dengan suhu 70ºC menggunakan minyak:metanol dengan perbandingan 1:11 dan katalis CaO 2%wt. Kondisi proses yang berpengaruh terhadap yield biodiesel adalah suhu reaksi, perbandingan mol minyak:metanol, serta interaksi antara suhu dengan perbandingan mol minyak:metanol. Akan tetapi tidak ditemukan adanya pengaruh signifikan konsentrasi katalis terhadap yield biodiesel.

scholarly journals OPTIMASI TEKSTUR BUAH TOMAT SETELAH SIMULASI TRANSPORTASI MENGGUNAKAN RESPON SURFACE METODOLOGY (RSM)

2019 ◽  
Vol 7 (2) ◽  
pp. 139-147
Author(s):  
Ida Ayu Widhiantari ◽  
Sandra Sandra ◽  
Gunomo Djoyowasito
Keyword(s):  
Response Surface Methodology ◽  
Central Composite Design ◽  
Response Surface ◽  
Central Composite

Selama kegiatan transportasi buah tomat dapat mengalami kerusakan akibat adanya frekuensi getaran yang berasal dari mesin transportasi dan juga lama waktu kegiatan transportasi. Adanya getaran selama proses transportasi buah tomat dapat mempengaruhi perubahan tekstur buah tomat. Optimasi dilakukan dalam penelitian ini dengan tujuan untuk memperoleh mutu buah tomat yang optimal setelah dilakukan simulasi transportasi. Optimasi dilakukan dengan menggunakan Response Surface Methodology (RSM) central composite design (CCD) dengan dua variabel bebas yaitu frekuensi getaran (3 Hz, 6HZ, dan 9Hz) dan lama waktu penggetaran (120, 150, dan 180 menit) serta tekstur buah tomat sebagai respon. Kondisi optimum diperoleh pada frekuensi getaran  2,33 Hz dan waktu simulasi transportasi 133,42 menit dengan nilai tekstur optimum buah tomat yaitu 0,147768 dengan nilai desirability sebesar 0,928.    

scholarly journals Multivariate Optimization of Pb2+ Adsorption onto Ethiopian Low-Cost Odaracha Soil Using Response Surface Methodology

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6477
Author(s):  
Yohanis Birhanu ◽  
Seyoum Leta
Keyword(s):  
Central Composite Design ◽  
Response Surface ◽  
Removal Efficiency ◽  
Interaction Effect ◽  
Contact Time ◽  
Low Cost ◽  
Design Model ◽  
Lead Ions ◽  
Experimental Result ◽  
Central Composite

Lead pollution is a severe health concern for humankind. Utilizing water contaminated with lead can cause musculoskeletal, renal, neurological, and fertility impairments. Therefore, to remove lead ions, proficient, and cost-effective methods are imperative. In this study, the Odaracha soil which is traditionally used by the local community of the Saketa District was used as a novel low-cost technology to adsorb lead ions. Odaracha adsorbent was characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The adsorption process followed the batch adsorption experiment. The response surface method was implemented to derive the operating variables’ binary interaction effect and optimize the process. According to the study’s experimental result, at optimum experimental conditions Odaracha adsorbent removes 98.17% of lead ions. Based on the result of the central composite design model, the Pb2+ ion removal efficiency of Odaracha was 97.193%, indicating an insignificant dissimilarity of the actual and predicted results. The coefficient of determination (R2) for Pb2+ was 0.9454. According to the factors’ influence indicated in the results of the central composite design model, all individual factors and the interaction effect between contact time and pH has a significant positive effect on lead adsorption. However, other interaction effects (contact time with dose and pH with dose) did not significantly influence the removal efficiency of lead ions. The adsorption kinetics were perfectly fitted with a pseudo-second-order model, and the adsorption isotherm was well fitted with the Freundlich isotherm model. In general, this study suggested that Odaracha adsorbent can be considered a potential adsorbent to remove Pb2+ ions and it is conceivable to raise its effectiveness by extracting its constituents at the industrial level.

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