Response features for low-cost statistical analysis and tolerance-aware design of antennas

2017 ◽  
Vol 31 (3) ◽  
pp. e2297 ◽  
Author(s):  
Slawomir Koziel ◽  
Adrian Bekasiewicz ◽  
Qingsha S. Cheng
Keyword(s):  
Statistical Analysis ◽  
Low Cost

Delivering More Fit-for-Purpose Wells with Low Cost Approach at Untapped Area Matured Field – Application of Cone Concept Statistical Approach

2021 ◽  
Author(s):  
M. Hatta M. Yusof ◽  
M. Zarkashi Sulaiman ◽  
Rahimah A. Halim ◽  
Nurfaridah Ahmad Fauzi ◽  
Ahgheelan Sella Thurai ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Statistical Approach ◽  
Control Method ◽  
Low Cost ◽  
Volatile Oil ◽  
Field Application ◽  
Well Design ◽  
Execution Phase ◽  
Sand Control ◽  
Fit For Purpose

Abstract This paper discusses the Case study of Field A in offshore Sarawak, Malaysia which focus on re-thinking development based on statistical analysis of the fields. Conventionally, well design is driven by subsurface requirement by targeting the high-reserve sand and well is designed to meet subsurface objectives. However, the conventional way may not be efficient to develop matured field environment due to the high CAPEX and the inconsistencies among well design especially in current volatile oil price period. The objective of this fit-for-purpose approach which is called "Cone Concept Statistical Approach" is to steer away from the conventional way of targeting only sweet spots whilst leaving the remaining potential resources undeveloped. Based on the statistical analysis and subsurface fields pattern, the "Cone Concept Statistical Approach" in which standardizing well design and trajectories was developed to extract the whole fields’ reserve at maximum. Well design boundaries were introduced to ensure this approach can be replicated throughout the field. Not only this study covers drilling perspective, completion perspective was also taken into consideration by exploring a cheaper and fit for purpose sand control method, considering it is a matured field with relatively short remaining field life. The Well Cost Catalogue for this field-specific approach was also developed which contains different types of design and completion, in order to holistically evaluate sand control method and identify the best option for the project moving forward. This "Cone Concept Statistical Approach" aims to enable operator to drill simple wells within the same allocated budget in which poses low-to-no risk in the design and execution phase. This promotes a learning curve to improve operation & HSE, and ultimately gets positive project economics. Since this simple approach can be implemented early on even during the pre-FEL stage, the FDP team & host authority can come together to jointly discuss the targets/platform ranking and segregate them into various phases. Hence, the number of platforms or drilling centers, and its location also can be optimized early on with this concept, and again, translating into further reduction in overall project cost. This paper will help other operators and host authority to understand better on how a specific development concept on statistical approach can result and turn the matured-challenging fields into more economically attractive projects – low overall development cost and maximizing the recovery.

Evaluation of an Uncooled Focal Plane Array Infrared Camera for Effusion Cooling Research

2000 ◽  
Author(s):  
Scott K. McGhee ◽  
A. M. Birk
Keyword(s):  
Image Analysis ◽  
Statistical Analysis ◽  
Focal Plane ◽  
Low Cost ◽  
Infrared Camera ◽  
Thermocouple Calibration ◽  
On Line ◽  
Research Grade ◽  
Temperature Maps ◽  
High Degree

This study assessed a low-cost, uncooled ferroelectric detector infrared camera for effusion cooling research. Advances in uncooled IR technology have led to applications previously limited to research-grade cameras. The imager operated in the 7–14μm waveband and sampled up to 30 frames per second. Thermal images were made of a matte-black flat plate, downstream of two cylindrical jets with injection angles of α = 30° and 90°, and L/D = 6. Thermocouple calibration was specific to each image. Statistical analysis and image analysis yielded detailed temperature maps with uncertainty as small as 0.9°C, a spatial resolution of 0.4mm, and a sensitivity of 0.1 °C. The system compared favorably with established infrared systems. Advantages include minimal instrumentation, on-line results, and a high degree of accuracy and resolution, at significantly reduced cost.

scholarly journals Comparison of 3D Coral Photogrammetry and Coral Video Transect for Coral Lifeform Analysis Using Low-cost Underwater Action Camera

2020 ◽  
Vol 37 (1) ◽  
Author(s):  
Zuhairi Bin Ahmad ◽  
Muhammad Idzham Helmi Bin Mohd Jinah ◽  
Shahbudin Bin Saad
Keyword(s):  
Statistical Analysis ◽  
Survey Methods ◽  
Low Cost ◽  
Scientific Research ◽  
Data Sets ◽  
Percentage Cover ◽  
Future Studies ◽  
Scuba Divers ◽  
Coral Morphology ◽  
Video Transect

This research analysed the use of 3D Coral Photogrammetry (CP) and Coral Video Transect (CVT) images collected from SCUBA divers using a low-cost underwater action camera to examine the coral lifeform. A comparison was made between data sets obtained using both methods on nine transects with different coral lifeform compositions and percentage cover within an area of 4 × 7 m. The comparison of the statistical analysis for CPCe revealed that there were no significant differences (p < 0.05) between CP and CVT photos where dead corals (p = 0.006), sand (p = 0.011), and unknown (p = 0.002) are present. Additionally, the coral value (p = 0.131) between CP and CVT was not significant. CP was capable of producing prominent branching, massive, and plate coral morphology results. This suggests that survey methods using low-cost action cameras for 3D Coral Photogrammetry would yield appropriate results in terms of coral lifeform detection. Hypothetically, by improving camera quality, it will yield a higher accuracy of 3D coral images that are suitable for use in scientific research and management. Other benefits of using CP include the possibilities for future studies with 3D coral surveys using remotely operated vehicles, less field time, and 3D coral seabed information.

Pemanfaatan Receiver Gnss Berbiaya Rendah “Expandable-Gnss” dengan Metode Post-Processing Kinematic dalam Pengukuran Kadastral

Tunas Agraria ◽  
2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Rizka Dita Samsudin Al Chodiq ◽  
Tanjung Nugroho ◽  
Bambang Suyudi
Keyword(s):  
Statistical Analysis ◽  
Spatial Planning ◽  
Low Cost ◽  
Data Communication ◽  
Tolerance Test ◽  
Static Method ◽  
Baseline Length ◽  
Post Processing ◽  
Gnss Receiver ◽  
Gnss Receivers

Abstract: Utilization of GNSS receiver by RTK method is expected to accelerate the land parcels measurement in the Ministry of Agrarian Affairs and Spatial Planning/National Land Agency. However, due to the expensive price, the number of current GNSS receivers is not yet comparable with the existing targets and work loads. Utilization of low-cost GNSS receiver can be a solution to the situation. One of the low-cost GNSS receivers is Expandable-GNSS (E-GNSS). The limitation of RTK method, related to the dependence of data communication during observation can be solved by the Post-Processing Kinematic (PPK) method. This research aims to test the accuracy of observations using E-GNSS with PPK method. The comparator in this research is the result of observation using GNSS receiver with static method. Data were analyzed by comparing the differences of coordinates between the three sample groups based on the baseline length classification, and also compared the coordinate differences between the two methods and the tolerance test based on the provisions of the PMNA / KBPN Technical Guidelines Number 3 of 1997. Based on the analysis indicates an increase in coordinate difference proportional to the length of the baseline. Statistical analysis also shows that there are significant differences between the coordinates of both methods, but still meet the fault tolerance point of 0.250 m. The length of the measured land parcels also meets the tolerance based on the provisions of the PMNA / KBPN Technical Guidelines Number 3 of 1997.Keywords: Cadastral, Low-Cost GNSS Receiver, Post-Processing Kinematic Intisari: Pemanfaatan receiver GNSS dengan metode RTK diharapkan dapat mempercepat kegiatan pengukuran bidang tanah di Kementerian ATR/BPN. Akan tetapi, karena harga receiver GNSS yang relatif mahal menyebabkan jumlahnya belum sebanding dengan target dan beban pekerjaan yang ada. Pemanfaatan receiver GNSS berbiaya rendah dapat menjadi solusi keadaan tersebut. Salah satu receiver GNSS berbiaya rendah adalah Expandable-GNSS (E-GNSS). Sedangkan keterbatasan metode RTK, terkait ketergantungan akan komunikasi data selama pengamatan dapat di atasi dengan penggunaan metode Post-Processing Kinematic (PPK). Pada penelitian ini, dilakukan pengujian ketelitian hasil pengamatan menggunakan E-GNSS dengan metode PPK. Sebagai pembanding dalam penelitian ini adalah hasil pengamatan menggunakan receiver GNSS dengan metode statik. Analisis dilakukan dengan membandingkan perbedaan koordinat kedua metode antar kelompok sampel berdasarkan klasifikasi panjang baseline, selain itu juga dibandingkan perbedaan koordinat hasil pengamatan antara kedua metode serta uji toleransi berdasarkan ketentuan pada Petunjuk Teknis PMNA/KBPN Nomor 3 Tahun 1997. Berdasarkan analisis hasil penelitian menunjukkan adanya peningkatan perbedaan koordinat sebanding dengan semakin panjang baseline. Analisis statistik juga menunjukkan terdapat perbedaan signifikan koordinat yang dihasilkan kedua metode, akan tetapi masih memenuhi toleransi kesalahan titik sebesar 0,250 m. Panjang sisi bidang tanah hasil pengukuran juga memenuhi toleransi berdasarkan ketentuan Petunjuk Teknis PMNA/KBPN Nomor 3 Tahun 1997.Kata kunci: Kadastral, Receiver GNSS Berbiaya Rendah, Post-Processing Kinematic

Determination of Satranidazole through Ion-Associative Complex Reaction

2019 ◽  
Vol 4 (1) ◽  
pp. 23-27
Author(s):  
K. Kiran Kumar ◽  
R. Venkata Nadh ◽  
M. Siva Kishore ◽  
G. Giri Prasad
Keyword(s):  
Statistical Analysis ◽  
Low Cost ◽  
Ion Association ◽  
Pharmaceutical Formulations ◽  
High Accuracy ◽  
Complex Reaction ◽  
Colored Complex ◽  
Absorbance Maximum ◽  
Association Complex

A simple, selective, accurate and low-cost spectrophotometric method has been described for determination of satranidazole in bulk and pharmaceutical formulations. The developed method involves the formation of chloroform extractable colored ion-association complex of satranidazole with Tropaeolin OOO (TPooo). The extracted colored complex showed absorbance maximum at wavelength 484 nm and obeying Beer′s law in the concentration 4-20 μg mL-1 with the correlation coeffiecent of 0.9998. The results of statistical analysis of the proposed method reveals high accuracy and good precession. Thus, the proposed method can be used commercially for the determination of satranidazole in bulk and pharmaceutical formulations.

An Improved Watermarking-Based Algorithm of Tamper Detection for Low-Cost EPC C1G2 RFID Tags

2014 ◽  
Vol 513-517 ◽  
pp. 1005-1008
Author(s):  
Xiao Ming Yao ◽  
Hong Yu Chen ◽  
Hong Lei Li ◽  
Xiao Yi Zhou
Keyword(s):  
Statistical Analysis ◽  
Theoretical Analysis ◽  
Data Security ◽  
Detection Method ◽  
Low Cost ◽  
Tamper Detection ◽  
Rfid Tags ◽  
Security Issues ◽  
Serial Number ◽  
The Way

Data tampering as one of the primary security issues in RFID-enabled applications has been presented in recent years and proposals based on watermarking have been put forward to address different aspects of tampering in RFID tags. However, most of current researches are focused on the way of generating the watermark from the data to be protected and embedding it into the tag field (usually the field of serial number or SN) used as the cover medium, thus the innate structural coding relationship as a new clue to guess out the hidden watermark might be ignored. In this paper, this flaw has been fully considered, and a novel tamper detection method using CFB based encryption to hide the location clues is presented. Although it cant resist the attack from statistical analysis either, theoretical analysis has demonstrated that our scheme outperforms its previous counterparts in data security.

scholarly journals Association of patients with fluorosis who underwent vital bleaching - A hospital-based study

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 1592-1597
Author(s):  
Sadhvi B ◽  
Delphine priscilla Antony S ◽  
Suresh V
Keyword(s):  
Statistical Analysis ◽  
Data Collection ◽  
Low Cost ◽  
Descriptive Study ◽  
Tooth Bleaching ◽  
Permanent Teeth ◽  
P Value ◽  
Treatment Approaches ◽  
Spss Software

Fluorosis staining is an esthetic problem, especially when in anterior. Numerous treatment approaches include Conservative approaches such as vital tooth bleaching, which is the most sought option to eliminate fluorosis staining as it is simple, low cost, noninvasive. Further, it is relatively rapid, no distortion of enamel and can be safely used for permanent teeth. This research emphasizes the association of patients with fluorosis who underwent vital bleaching to correct the staining and to obtain esthetically pleasing teeth. This is a comparative and descriptive study for which the data was obtained from DIAS (dental information archiving software). The data collection was from the Undergraduate and postgraduate clinics, Saveetha dental college, SIMATS. The data was collected and compiled, followed by its statistical analysis by using the SPSS software by IBM. Results revealed the incidence of Vital bleaching for fluorosis was 76.7%, and vital bleaching for other reasons was 23.3%; Out of the patients who underwent vital bleaching for fluorosis, males were 86.7%, and females were 13.3% with P-value < 0.05 statistically significant; patients from 1-34 years were 83.3%, 35-55 years were 10.0% and above 55 years were 6.7% with P-value < 0.05 statistically significant. The overall results show a Male predilection in vital bleaching for fluorosis and 1-34 years as the most predominant population for undergoing vital bleaching among fluorosis patients.

scholarly journals Can response time be trained with bilateral limb training in children with Down syndrome?

2015 ◽  
Vol 6 (03) ◽  
pp. 339-343 ◽  
Author(s):  
Pratiksha Tilak Rao ◽  
John M. Solomon
Keyword(s):  
Down Syndrome ◽  
Statistical Analysis ◽  
Response Time ◽  
Low Cost ◽  
Community Settings ◽  
Left Hand ◽  
Children With Down Syndrome ◽  
Before And After ◽  
Training Activities ◽  
The Right

ABSTRACT Aims: Response time (RT), that is, the time taken to respond is known to be delayed in children with Down syndrome (DS). We performed a pilot study to evaluate whether bilateral limb training can be used to train RT, in children with DS. Settings and Design: 10 children with DS (5 males) were recruited from a special school in a suburban region using convenience sampling. Subjects and Methods: Response time was measured using an indigenously developed RT Analyzer, before and after intervention, from right and left hand. Structured bilateral limb training was given for a period of 4 weeks, using low-cost, locally available materials, in community settings. Statistical Analysis Used: The Wilcoxon signed ranks test was used for statistical analysis. Results: Significant improvements in RT following 4 weeks of intervention were seen in the left hand (P = 0.006) but not in the right hand (P = 0.104). Conclusions: Response time can be trained in children with DS using 4 weeks of bilateral limb training activities using low-cost, locally available materials.

scholarly journals Consumer grade EEG devices: are they usable for control tasks?

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1746 ◽  
Author(s):  
Rytis Maskeliunas ◽  
Robertas Damasevicius ◽  
Ignas Martisius ◽  
Mindaugas Vasiljevas
Keyword(s):  
Statistical Analysis ◽  
Experimental Evaluation ◽  
Recognition Accuracy ◽  
Low Cost ◽  
High Variability ◽  
Significant Problem

We present the evaluation of two well-known, low-cost consumer-grade EEG devices: the Emotiv EPOC and the Neurosky MindWave. Problems with using the consumer-grade EEG devices (BCI illiteracy, poor technical characteristics, and adverse EEG artefacts) are discussed. The experimental evaluation of the devices, performed with 10 subjects asked to perform concentration/relaxation and blinking recognition tasks, is given. The results of statistical analysis show that both devices exhibit high variability and non-normality of attention and meditation data, which makes each of them difficult to use as an input to control tasks. BCI illiteracy may be a significant problem, as well as setting up of the proper environment of the experiment. The results of blinking recognition show that using the Neurosky device means recognition accuracy is less than 50%, while the Emotiv device has achieved a recognition accuracy of more than 75%; for tasks that require concentration and relaxation of subjects, the Emotiv EPOC device has performed better (as measured by the recognition accuracy) by ∼9%. Therefore, the Emotiv EPOC device may be more suitable for control tasks using the attention/meditation level or eye blinking than the Neurosky MindWave device.

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