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Relevant bibliographies by topics / HDOP

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Academic literature on the topic 'HDOP'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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Journal articles on the topic "HDOP"

1

Tang, Wenjie, Junping Chen, Chao Yu, Junsheng Ding, and Ruyuan Wang. "A New Ground-Based Pseudolite System Deployment Algorithm Based on MOPSO." Sensors 21, no. 16 (2021): 5364. http://dx.doi.org/10.3390/s21165364.

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Pseudolite deployment is the premise of ground-based pseudolite system networking, which affects the coverage and positioning accuracy of ground-based pseudolite systems. Optimal deployment algorithms can help to achieve a higher signal coverage and lower mean horizontal precision factor (HDOP) with a limited number of pseudolites. In this paper, we proposed a multi-objective particle swarm optimization (MOPSO) algorithm for the deployment of a ground-based pseudolite system. The new algorithm combines Digital Elevation Model (DEM) data and uses the mean HDOP of the DEM grid to measure the geometry of the pseudolite system. The signal coverage of the pseudolite system was calculated based on the visual area analysis with respect to reference planes, which effectively avoids the repeated calculation of the intersection and improves the calculation efficiency. A selected area covering 10 km×10 km in the Jiuzhaigou area of China was used to verify the new algorithm. The results showed that both the coverage and HDOP achieved were optimal using the new algorithm, where the coverage area can be up to approximately 50% and 30% more than using the existing particle swarm optimization (PSO) and convex polyhedron volume optimization (CPVO) algorithms, respectively.

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Bian, Yuxia, Meizhen Wang, Yongbin Chu, et al. "A Cost Function for the Uncertainty of Matching Point Distribution on Image Registration." ISPRS International Journal of Geo-Information 10, no. 7 (2021): 438. http://dx.doi.org/10.3390/ijgi10070438.

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Computing the homography matrix using the known matching points is a key step in computer vision for image registration. In practice, the number, accuracy, and distribution of the known matching points can affect the uncertainty of the homography matrix. This study mainly focuses on the effect of matching point distribution on image registration. First, horizontal dilution of precision (HDOP) is derived to measure the influence of the distribution of known points on fixed point position accuracy on the image. The quantization function, which is the average of the center points’ HDOP* of the overlapping region, is then constructed to measure the uncertainty of matching distribution. Finally, the experiments in the field of image registration are performed to verify the proposed function. We test the consistency of the relationship between the proposed function and the average of symmetric transfer errors. Consequently, the proposed function is appropriate for measuring the uncertainty of matching point distribution on image registration.

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Wilkinson, Luke A., Kevin B. Vincent, Anthony J. H. M. Meijer, and Nathan J. Patmore. "Mechanistic insight into proton-coupled mixed valency." Chemical Communications 52, no. 1 (2016): 100–103. http://dx.doi.org/10.1039/c5cc07101a.

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Stabilisation of the mixed-valence state in [Mo<sub>2</sub>(TiPB)<sub>3</sub>(HDOP)]<sub>2</sub><sup>+</sup> (HTiPB = 2,4,6-triisopropylbenzoic acid, H<sub>2</sub>DOP = 3,6-dihydroxypyridazine) by electron transfer (ET) is related to the proton coordinate of the bridging ligands.

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Chew, Wi Kang, and Muhammad Aizzat Zakaria. "Outdoor Localisation for Navigation Tracking using Differential Global Positioning System Estimation (DGPS) : Positioning Errors Analysis." Mekatronika 1, no. 2 (2019): 103–14. http://dx.doi.org/10.15282/mekatronika.v1i2.4994.

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    Global Positioning System (GPS) is a very popular outdoor positioning system. Due to the satellites’ errors signal, the Global Positioning System (GPS) receivers determine the accuracy of a current location with about 100 meters in latitude and 156 meters in longitude. In this few years, the technology on autonomous vehicles is rising. Autonomous vehicles need to navigate with high positioning accuracy for preventing any potential danger to road user. So in this paper, Differential Global Positioning System (DGPS) experiment will be introduced for improve the positioning accuracy. Differential Global Positioning System (DGPS) operations compose of Reference Station and Rover Station. Both of the station will use the GPS receiver for receiving the positioning data from GPS satellites and the positioning data collected from Reference Station will be used to calculate the positioning errors and the errors correction will then be transferred to Rover Station to improve the positioning accuracy. The results obtained will be discussed based on the average and range of errors in both latitude and longitude, number of satellites detected, Horizontal Dilution of Precision (HDOP), Vertical Dilution of Precision (VDOP) and the improvement on Differential Global Positioning System (DGPS) at the same time in different day. In four days’ results, it can be seen that the number of satellites detected will be affected by the Horizontal Dilution of Precision (HDOP) and Vertical Dilution of Precision (VDOP) which cause the positioning errors in latitude and longtitude. The average of positioning errors range between -4.165m and 2.925m in latitude and -0.618m and 1.998m in longitude.   

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Akopian, David, Arsen Melkonyan, and C. L. Philip Chen. "Validation of HDOP Measure for Impact Detection in Sensor Network-Based Structural Health Monitoring." IEEE Sensors Journal 9, no. 9 (2009): 1098–102. http://dx.doi.org/10.1109/jsen.2009.2026002.

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Zhao, Xinyang, Qiangqiang Shuai, Guangchen Li, Fangzhou Lu, and Bocheng Zhu. "A Geometric Layout Method for Synchronous Pseudolite Positioning Systems Based on a New Weighted HDOP." ISPRS International Journal of Geo-Information 10, no. 9 (2021): 601. http://dx.doi.org/10.3390/ijgi10090601.

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The positioning accuracy of a ground-based system in an indoor environment is closely related to the geometric configuration of pseudolites. This paper presents a simple closed-form equation for computing the weighted horizontal dilution of precision (WHDOP) with four eigenvalues, which can reduce the amount of calculation. By comparing the result of WHDOP with traditional matrix inversion operation, the effectiveness of WHDOP of the proposed simple calculation method is analyzed. The proposed WHDOP has a linear relationship with the actual static positioning result error in an indoor environment proved by the Pearson analysis method. Twenty positioning points are randomly selected, and the positioning variance and WHDOP of each positioning point have been calculated. The correlation coefficient of WHDOP and the positioning variance is calculated to be 0.82. A pseudolite system layout method based on a simulated annealing algorithm is proposed by using WHDOP, instead of Geometric dilution of precision (GDOP). In this paper, the constraints of time synchronization are discussed. In wireless connection system, the distance between master station and slave station should be kept within a certain range. Specifically, for a given indoor scene, many positioning target points are randomly generated in this area by using the Monte Carlo method. The mean WHDOP value of all positioning points corresponding to the synchronous pseudolite layout is used as the objective function. The results of brute force search are compared with the method, which proves the accuracy of the new algorithm.

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Mun, Seung-Hwan, Jong-Woo An, and Jang-Myung Lee. "Robust Positioning Algorithm for a Yard Transporter Using GPS Signals with a Modified FDI and HDOP." International Journal of Precision Engineering and Manufacturing 19, no. 8 (2018): 1107–13. http://dx.doi.org/10.1007/s12541-018-0131-y.

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Gururajan, Srikanth, and Ye Bai. "Autonomous “Figure-8” Flights of a Quadcopter: Experimental Datasets." Data 4, no. 1 (2019): 39. http://dx.doi.org/10.3390/data4010039.

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This article describes the data acquired from multiple flights of a custom-built quadcopter. The Quadcopter was programmed to fly a pre-defined “Figure-8” flight path, at a constant altitude. The data set includes flights with a varying number of waypoints (10 and 15 waypoints in each lobe of the “Figure-8”) and at two different velocities (1.5 and 2.5 m/s). The data also contains information on the output of the flight controller in terms of the Pulse Width Modulation (PWM) signals to each of the four Electronic Speed Controllers (ESC) driving the motors, the recorded outputs of the Inertial Measurement Unit (linear accelerations ax, ay, az and angular velocities p, q, r), GPS data (Latitude, Longitude, altitude, Horizontal Dilution of Precision (HDOP) and Vertical Dilution of Precision (VDOP). The data are included as Supplemental Material.

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Vista IV, Felipe P., Deok Jin Lee, and Kil To Chong. "Fusing Multiple Inexpensive GPS Heading Data via Fuzzified Ad-Hoc Weighing." Applied Mechanics and Materials 776 (July 2015): 425–30. http://dx.doi.org/10.4028/www.scientific.net/amm.776.425.

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Applying the same principle behind the Ad-hoc weighing used in fusing data from two inexpensive GPS and an electronic compass (EC) brought up the problem of numerous conditions when trying to fuse data from three GPS devices. Fusing data from two GPS and one EC required at least thirty-two (32) conditions while using three GPS would require 182 conditions that would have entailed a complex set of programming codes. Fuzzy logic was explored as a possible candidate to replace the hard-coding of if-then-statements but still perform the ad-hoc algorithm as desired. The GPS Fix and HDOP (horizontal dilution of precision) values are utilized to derive the corresponding weight to be assigned to the individual GPS as well as the overall fused GPS data. Experimental tests using actual GPS data showed the effectivity of the proposed method.

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An, Jongwoo, and Jangmyung Lee. "Robust Positioning and Navigation of a Mobile Robot in an Urban Environment Using a Motion Estimator." Robotica 37, no. 08 (2019): 1320–31. http://dx.doi.org/10.1017/s0263574718001534.

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SummaryRobust positioning and navigation of a mobile robot in an urban environment is implemented by fusing the Global Positioning System (GPS) and Inertial Navigation System (INS) data with the aid of a motion estimator. To select and isolate malicious satellite signals and guarantee the minimum number of GPS signals for the localization, an enhanced fault detection and isolation (FDI) algorithm with a short-term memory has been developed in this research. When there are sufficient satellite signals for positioning, the horizontal dilution of precision (HDOP) has been applied for selecting the best four satellite signals to localize the mobile robot. Then, the GPS data are fused with INS data by a Kalman filter (KF) for a straight path and a curved motion estimator (CME) for a curved path. That is, the INS data are properly fused to the GPS data through the KF or CME process. To verify the effectiveness of the proposed algorithm, experiments using a mobile robot have been carried out on a university campus.

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Dissertations / Theses on the topic "HDOP"

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薮本, 康之, 正昭片山, 敬也山里 та 明. 小川. "通信との統合を考慮した単一衛星によるディファレンシャル測位方式". 電子情報通信学会, 1995. http://hdl.handle.net/2237/12650.

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Čurda, Pavel. "Měřicí přístroj HDO signálů." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2019. http://www.nusl.cz/ntk/nusl-400610.

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The thesis deals with the introduction of the measuring instrument SVA - M on the market for compliance with electromagnetic compatibility and electrical safety requirements. Furthermore it deals with determination of measuring accuracy instrument SVA - M and measurement uncertainties. For the determination of accuracy there is a theoretical analysis and subsequent practical measurements.

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Vacek, Tomáš. "Vývoj HDP, strukturální analýza, postavení zemědělství." Master's thesis, Česká zemědělská univerzita v Praze, 2016. http://www.nusl.cz/ntk/nusl-257153.

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This master thesis deals with the gross domestic product as one of the basic macroeconomic indicators. The subject of the work is also examining the situation of Czech agriculture. The work presents theoretical basis for understanding the basic relations and concepts that relate to the gross domestic product. They describe the various methods of GDP calculation and underlying economic factors, which contribute to the final value of GDP. In detail, the work deals with the development of Czech gross domestic product since 1993, and its comparison with not only with neighboring states, but also with other European Union countries. The last part deals with the position of Czech agriculture and its development since 2003. In addition, he also position of individual plant and animal production, number of employees and contribution to gross domestic product. In the final part, the work tries to summarize the trend of the gross domestic product of the Czech Republic and agriculture as its integral part.

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Klimentová, Veronika. "Nezaměstnanost a HDP - analýza vzájemných vztahů." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193368.

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The present thesis describes the relation of the gross domestic product and the unemployment rate by educational attainment. The analysis of relation between time series refers to data for the Czech Republic. The thesis is divided into four main chapters. The first chapter deals with the definition of the gross domestic product, the calculation method, the detection and the measurement. The following chapter is focused on the issue of unemployment. Both the chapters are supplemented by historical development of indicators in the Czech Republic. The last theoretical part presents the statistical methods used in the time series analysis. The fourth chapter provides the actual analysis of relations between the gross domestic product and the unemployment rate by educational attainment. The analysis is based on data for the period 1996--2014, which are quarterly seasonally unadjusted data.

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Jiráková, Eliška. "Investování v ČR ve vztahu k HDP." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-17021.

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Investment has undergone dramatic development lately and people are looking more and more new ways to evaluate their funds to protect them from the effects of inflation or as easy to get rich This work deals with investment opportunities for Czechs in relation to their income and appreciation in relation to the welfare of the country measured by GDP. The first part describes the history of investment and investment opportunities. Subsequently, the work deals with the development of GDP and of the allocation of funds in various investment instruments in the development of GDP. The last part is devoted to modeling the development of further investment on GDP in the CR.

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Šabatka, Matěj. "Investování v ČR ve vztahu k HDP." Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-192781.

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The aim of this thesis is to explore investment opportunities of the Czech population, the ability of businesses to obtain needed capital for their investment plans and possibilities to obtain these funds from individuals through securities. The main part of this work is to evaluate the dependence between the securities markets and the growth of gross domestic product between 2006 - 2012. For the research, graphical and correlation analysis were used. Due to detected dependencies between gross domestic product and the bond market, issuance of bonds with a five-month delay of the positive fluctuation of gross domestic product was recommended. The final section is concentrates on prediction of the future development of the bond market, which proved to be unpredictable.

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Tomanová, Veronika Anna. "Vyhodnocení závislosti HDP na provozních výkonech letecké dopravy." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232085.

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The diploma thesis describes performance in the area of air transport, based on performance of national economies of two selected neighbouring countries, Czech Republic and Germany, through comparison of their gross domestic product in the selected time period. The operating performance is focused mainly on transportation performance of air transport. First part of the thesis is dealing with interconnection of economy with air transportation. Crucial part of the work contains analysis of development of GDP and analysis of development of transportation performance of both countries. Part of the thesis is also acquisition of passenger-kilometre data derived from fuel consumption and produced emissions of CO2.

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Nejman, Milan. "Testování Grangerovy kauzality mezi akciovými indexy a HDP." Master's thesis, Vysoká škola ekonomická v Praze, 2007. http://www.nusl.cz/ntk/nusl-1736.

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Cílem diplomové práce je pomocí nástrojů ekonometrické analýzy otestovat vztah Grangerovy kauzality mezi vývojem akciových indexů a HDP v České republice, Německu a Velké Británii. Neméně důležitou součástí je popsání jednotlivých teoretických východisek, zvážení různých argumentů pro a proti existenci tohoto vztahu.

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Bieliková, Nikol. "Průměrná mzda a HDP - vzájemné vztahy a vazby." Master's thesis, Vysoká škola ekonomická v Praze, 2013. http://www.nusl.cz/ntk/nusl-198019.

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The thesis describes interactions and relationships between selected economic indicators. These indicators are the gross domestic product and the average gross monthly wage. The analysis of these selected indicators, are made for the Czech Republic and Slovakia. The work has four main parts, which are divided into several other sections. The first defines the concept of national accounting, the second part contents gross domestic product, the method of its calculating and the frequency of compilation. In the third section is described the field theory of wages and salaries and the concepts such as minimum wage, the average gross monthly wage and median wage and salary are defined. In this two chapters are compared selected countries on the basis of the tables and graphs of selected indicators. The last chapter analyzes the relationships between selected economic indicators in selected countries based on quarterly data from the years 2001-2013.

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Omar, Nazri. "Host defence peptide (HDP) human beta defensin 9 (HBD9)." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/33280/.

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Introduction: The emergence of antibiotic resistance has led to the continuing search for discovery of effective antibiotics. Host defence peptides (HDPs) confer defence mechanisms against infection and investigation of their specific roles and interplays are ongoing. Among the HDPs, defensins are a group of effector molecules which plays important roles in humans. Although several stereotypes of human beta defensins (hBDs) such as the hBD1-3 are well studied, other members including the human beta defensin 9 (hBD9), are not entirely known. Understanding the properties of these HDPs will enable us to discover a safe and efficacious, broad-spectrum and resistance-free antibiotic for therapeutic application in the future. Purpose: The purpose of this study is to clone the DEFB109 gene, express and purify the hBD9 propeptide, before determining the hBD9 propeptide antimicrobial property using a recombinant system in Escherichia coli. Methods: The second exon of the DEFB109 was amplified through reverse transcription polymerase chain reaction (RT-PCR) and inserted into selected plasmid vectors. The recombinant plasmid construct was cloned, and transformed into E coli expression host. The correctly transformed colonies were selected before the plasmid constructs were purified and verified through nucleotide sequencing. Expression and purification of the hBD9 propeptide were carried out and antimicrobial property of the peptide was investigated. Result: HBD9 fusion protein was successfully expressed and purified. It was shown to have antimicrobial efficacy against Staphylococcus aureus and Pseudomonas aeruginosa. The effect of the free hBD9 propeptide against wider spectrum of organisms needs to be studied in the future.

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Books on the topic "HDOP"

1

Green, Vivian. Monitoring in TG-HDP. Thai-German Highland Development Programme, 1991.

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Brandenberg, Leo. TG-HDP 5-year framework plan. Thai-German Highland Development Programme, 1991.

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Thai-German Highland Development Programme, TG-HDP. The Programme, 1991.

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Programme, Thai-German Highland Development. TG-HDP five year plan framework: Draft. Thai-German Highland Development Programme, 1991.

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Programme, Thai-German Highland Development. Summary document: Thai-German Highland Development Programme TG-HDP. Thai-German Highland Development Programme, 1998.

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HDP Scientific Symposium (3rd 1995 Geneva, Switzerland). Global change, local challenge: HDP Third Scientific Symposium, 20-22 September 1995. HDP, 1996.

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Söhn, Gerhart. Handbuch der Original-Graphik in deutschen Zeitschriften, Mappenwerken, Kunstbüchern und Katalogen (HDO), 1890-1933. Edition GS, 1989.

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Thai-Norwegian Church Aid Highland Development Project (Chiang Mai, Thailand). Thai-Norwegian Church Aid Highland Development Project (TN-HDP): Half year report, July-December, 1992. Norwegian Church Aid, 1993.

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Salzer, Walter. The TG-HDP approach towards sustainable agriculture and soil and water conservation in the hills of northern Thailand. Thai-German Highland Development Programme, 1991.

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Gebert, Rita. Community-based drug abuse control at the TG-HDP: Status as of March 1995 and operational plan for April-September 1995. Thai-German Highland Development Programme, 1995.

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Book chapters on the topic "HDOP"

1

Ji, Haifu, Lihua Ma, Guoxiang Ai, and Meng Wang. "The Distributions of HDOP and VDOP in GNSS and a Corresponding New Algorithm of Fast Selecting Satellites." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29175-3_37.

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Xie, Boyi, and Rebecca J. Passonneau. "Supervised HDP Using Prior Knowledge." In Natural Language Processing and Information Systems. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-31178-9_21.

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Bahk, Yong-Whee. "99mTc-HDP Pinhole Bone Scanning." In Imaging of Trabecular Microfracture and Bone Marrow Edema and Hemorrhage. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4466-8_2.

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Zhou, HongWei, Xin Wu, WenChang Shi, JinHui Yuan, and Bin Liang. "HDROP: Detecting ROP Attacks Using Performance Monitoring Counters." In Information Security Practice and Experience. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06320-1_14.

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Robere, Robert, and Tarek Richard Besold. "Complex Analogies: Remarks on the Complexity of HDTP." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35101-3_45.

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Chen, Mubo, Taichun Tang, Jiali Ma, and Mingchui Dong. "CVD Oriented HDP&PP Categorization Method." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-55038-6_94.

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Parisi, Debora, and Stefania Perego. "Flexible Parallel Split-Merge MCMC for the HDP." In Springer Proceedings in Mathematics & Statistics. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-54084-9_20.

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Liao, Yinghong, Zhuo Su, Xiangguo Liang, and Bin Qiu. "HDP-Net: Haze Density Prediction Network for Nighttime Dehazing." In Advances in Multimedia Information Processing – PCM 2018. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00776-8_43.

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Besold, Tarek Richard, and Robert Robere. "When Almost Is Not Even Close: Remarks on the Approximability of HDTP." In Artificial General Intelligence. Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-39521-5_2.

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Cho, Wanhyun, Seongchae Seo, In-seop Na, and Soonja Kang. "Automatic Images Classification Using HDP-GMM and Local Image Features." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41671-2_42.

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Conference papers on the topic "HDOP"

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Teranishi, Yuuichi, Susumu Takeuchi, and Kaname Harumoto. "HDOV." In the 2011 ACM Symposium. ACM Press, 2011. http://dx.doi.org/10.1145/1982185.1982295.

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Luckey, S. George, and Peter A. Friedman. "Hot Draw Mechanical Preforming of an Automotive Door Inner Panel." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72133.

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A novel sheet metal forming technology based on aspects of both warm forming and superplastic forming has recently been developed. The new forming process, referred to as hot draw mechanical preforming (HDMP), uses two sequential steps to form a panel within a single tool at elevated temperature. In the first step, the cushion system acts on a binder and upper die to draw the blank over a punch which serves to draw in metal from the perimeter of the blank. In the second step gas pressure is applied to finish the panel details. This two step process of drawing in metal followed by gas forming can result in a significant expansion of the forming envelope for conventional AA5xxx series aluminum sheet alloys commonly used within the automotive industry. Similar to SPF, the HDMP process is performed within a single forming press equipped with heated platens and using gas pressure to shape the component during elevated temperature forming. However, the HDMP process utilizes a blankholder to control the flow of material into the forming cavity during the drawing stage and therefore requires the addition of an integrated cushion system in the bed of the press. HDMP dies are of interest in automotive applications because they maintain the low-investment attributes of SPF tooling while also significantly reducing the forming time as compared to conventional SPF. This work details the CAE based design of an HDMP die to form a one-piece aluminum door inner that can not be formed with conventionally forming processes. Critical aspects addressed in the development of the die include manufacturing targets, part design for manufacturing, and die design for operation at elevated temperature.

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Lovberg, R. H., R. A. Riley, J. S. Shlachter, Malcolm Haines, and Andrew Knight. "Instability Heating of the HDZP." In DENSE Z-PINCHES: Third International Conference. AIP, 1994. http://dx.doi.org/10.1063/1.2949211.

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Cassidy, Lawrence W. "HDOS HD-1003 star tracker." In SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, edited by Walter J. Fowski and Morris M. Birnbaum. SPIE, 1995. http://dx.doi.org/10.1117/12.211496.

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Mungekar, Hemant, Bruno Geoffrion, Bikram Kapoor, et al. "Heat and Mass Transport in HDP-CVD Chamber." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47030.

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HDP-CVD reactors are used for Shallow Trench Isolation (STI), Inter Metal Dielectric (IMD) and Inter Layer Dielectric (ILD) applications for logic and memory device fabrication. As device dimension shrinks, the trend has been to use lower pressure and higher plasma density for gap-fill with higher aspect ratio (AR). Higher AR gapfill in addition to higher throughput is achieved by running multiple wafers between a chamber clean, present a unique set of challenges for heat and mass-transfer in an HDP-CVD reactor. This paper describes some of the new state-of-the-art hardware innovations specifically developed to meet these challenges. In particular, heat transfer to plasma facing materials, fluid mechanics, and transport of sub-micron sized particles in the plasma environment of an HDP-CVD reactor are explored.

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Cone, Christopher, Keith Felton, Kevin Rinebold, and John Ferguson. "Shift-Left Vertification in HDAP Design." In 2019 International Wafer Level Packaging Conference (IWLPC). IEEE, 2019. http://dx.doi.org/10.23919/iwlpc.2019.8914101.

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Canteenwalla, Pervez, Craig R. Davison, Wajid A. Chishty, Cynthia Ginestra, and Brice Dally. "Testing of Synthesized Aromatic Kerosene (SAK) Aviation Fuel Blends at Simulated Altitudes." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-57570.

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A number of pathways for producing new alternative fuels are emerging. One such fuel is Hydrodeoxygenated Synthesized Aromatic Kerosene (HDO-SAK) which is composed of approximately 95% mono-aromatic compounds. This fuel is intended as a blending component to increase the aromatic content of other synthetic fuels that do not contain aromatic compounds and can be used to create either semi-synthetic or fully-synthetic jet fuel for use in aviation. This paper presents the results of engine tests using the HDO-SAK blended with Synthesized Paraffinic Kerosene from Hydroprocessed Esters and Fatty Acids (HEFA-SPK) to create a fully-synthetic fuel with aromatic content that matched that of a comparison conventional jet fuel. Both the HDO-SAK blended fuel and conventional Jet A were tested in a Microturbo TRS-18 turbojet engine at a range of engine conditions and simulated altitudes up to 8,600 m in the National Research Council Canada (NRC) Research Altitude Test Facility (RATFac). This paper details the engine performance results from this testing which represents the first time this particular alternative fuel has been tested in an engine.

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Mmata, Bella, Hilary Okeke, Mike Onyekonwu, and Jesse Joshua. "Determination of Hydrocarbon Dew Point Hdp of Natural Gas – Experimental and Theoretical." In SPE Nigeria Annual International Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/208261-ms.

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Abstract Hydrocarbon dew point (HDP) temperature is defined as the temperature at which the first hydrocarbon liquid begins to condense in a natural gas cooled at constant pressure, which is an important qualitative parameter for pipeline operators. Hydrocarbon liquid drops-out along the gas pipeline will decrease the effective cross-sectional area of the pipes causing increased pressure drop, reduced line capacity as well as system shutdowns. It is therefore imperative that the gas pipelines be operated above the hydrocarbon dew point (HDP) temperature to ensure a trouble free line; this of course requires the knowledge of the HDP for the pipeline. In this work, onsite measurement of the HDP of 5 different natural gases from different flow stations and gas processing plants in the Niger-Delta region was done using an automatic optical condensation dew point meter. Subsequently, each of the gases was collected in stainless steel Proserv bottles and taken to the laboratory for compositional analysis using gas chromatographic technique with reference to GPA 2286. In addition, the Peng Robinson (PR) and Soave Redlich Kwong (SRK) Equations of state (EOS) were used to predict the hydrocarbon dew point temperature of the gases at the flow line pressures. The Average Absolute Error (AAE) for EOS PR was 9.33% while that for EOS SRK was 14.68%. Obviously, it showed that PR EOS gave better predictions than SRK EOS. The result of this work also showed that even a 50% variation in molar contributions of the non-hydrocarbon components had negligible effects on the predicted hydrocarbon dew point temperatures for all the gas samples tested.

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Shou, Lidan, Zhiyong Huang, and Kian Lee Tan. "Performance guaranteed rendering using the HDoV tree." In the 1st international conference. ACM Press, 2003. http://dx.doi.org/10.1145/604471.604521.

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Tao, Liu, and Cai Anni. "HDP-HCRF for object segmentation." In 2014 4th IEEE International Conference on Network Infrastructure and Digital Content (IC-NIDC). IEEE, 2014. http://dx.doi.org/10.1109/icnidc.2014.7000297.

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