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Journal articles on the topic 'RTKLIB'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Takács, B., Z. Siki, and R. Markovits-Somogyi. "EXTENSION OF RTKLIB FOR THE CALCULATION AND VALIDATION OF PROTECTION LEVELS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W2 (July 5, 2017): 161–66. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w2-161-2017.

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System integrity (i.e. the capability of self-monitoring) and the reliability of the positions provided need to be ensured within all safety critical applications of the GPS technology. For the sake of such applications, GPS augmentations, for example Space Based Augmentation Systems (SBAS) are to be applied to achieve the required level of integrity. SBAS provides integrity in a multi-step procedure that is laid out in the Radio Technical Commission for Aeronautics (RTCA) Minimum Operational Performance Standards (MOPS) for airborne navigation equipment using GPS. Besides integrity, SBAS also

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Berber, M., R. Munjy, and J. Lopez. "Kinematic GNSS positioning results compared against Agisoft Metashape and Pix4dmapper results produced in the San Joaquin experimental range in Fresno County, California." Journal of Geodetic Science 11, no. 1 (2021): 48–57. http://dx.doi.org/10.1515/jogs-2020-0122.

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Abstract RTKLIB which is an open source Global Navigation Satellite Systems (GNSS) software has gained rapid acceptance among Surveying professionals thanks to recent developments in UAS (Unmanned Aerial System) technology. RTKLIB enables standard and precise point positioning (PPP) in real-time and post-processing modes to be performed. As such, UAS users utilize this software to analyze GNSS data collected by GNSS systems on UAS. By being versatile and free, RTKLIB is commonly used by many; however, it is not the only freely available GNSS software. There are also freely available online GNS

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Ferreira, António, Bruno Matias, José Almeida, and Eduardo Silva. "Real-time GNSS precise positioning: RTKLIB for ROS." International Journal of Advanced Robotic Systems 17, no. 3 (2020): 172988142090452. http://dx.doi.org/10.1177/1729881420904526.

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The global navigation satellite system (GNSS) constitutes an effective and affordable solution to the outdoor positioning problem. When combined with precise positioning techniques, such as the real time kinematic (RTK), centimeter-level positioning accuracy becomes a reality. Such performance is suitable for a whole new range of demanding applications, including high-accuracy field robotics operations. The RTKRCV, part of the RTKLIB package, is one of the most popular open-source solutions for real-time GNSS precise positioning. Yet the lack of integration with the robot operating system (ROS

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Escobar, Melissa Gisel, Fabian Octavio Sesin, Valeria Sara Titiosky, Rubén Edgar Corvalán, Norberto Argentino Sanabria, and Elvira Eva Ferrari. "Uso del software RTKLIB para el procesamiento de señales GPS." Extensionismo, Innovación y Transferencia Tecnológica 6 (June 17, 2020): 230. http://dx.doi.org/10.30972/eitt.604396.

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<p>La ionosfera, que retrasa la señal, en una cantidad variable y desconocida, es la principal fuente de error en el posicionamiento puntual; la única manera de eliminarla seria contando con navegadores que midan sobre el código C/A (código de fácil acceso) y P (código preciso), lo que, si bien es posible, no resulta practico por motivos económicos; por lo que analizamos los modelos ionosféricos, ya que ellos reducen este error. Se estudio el Software libre RTKLIB 2.4.2, que es un paquete de programas de código abierto para el posicionamiento estándar y preciso con GNSS; consta de una bi

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Josić, Nikola. "ODREĐIVANJE KOORDINATA TAČAKA U GNSS MREŽAMA PERMANENTNIH STANICA." Zbornik radova Fakulteta tehničkih nauka u Novom Sadu 36, no. 05 (2021): 982–85. http://dx.doi.org/10.24867/12kg04josic.

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U savremeno doba dolazi do svakodnevnog razvoja novih tehnologija i softvera, što stručnjacima iz različitih oblasti, pa tako i geodezije omogućava da adekvatno odgovore na postavljene zadatke. U okviru ovog rada, izvršena je analiza obrade GNSS podataka opažanja u dva različita programa (RTKLib i Bernese AUSPOS). Opisan je način procesiranja podataka i izvršeno je poređenje dobijenih rezultata, odnosno koordinata tačaka.

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А. Д., Шунков, та Башкуев Ю. Б. "АНАЛИЗ СУТОЧНЫХ ВАРИАЦИЙ ИЗМЕРЕННЫХ КООРДИНАТ GPS–СТАНЦИИ ULAZ ПРОГРАММАМИ RTKLIB И MATHLAB". Chemistry Physics 48, № 1 (2019): 32–37. http://dx.doi.org/10.18101/2306-2363-2019-1-32-37.

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Yan-yi, Li, Huang Jin, and Tang Ming-xiu. "Performance evaluation of GPS / BDS combined single-point positioning based on RTKLIB." E3S Web of Conferences 165 (2020): 03009. http://dx.doi.org/10.1051/e3sconf/202016503009.

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In order to evaluate the performance of GPS / BDS, RTKLIB, an open-source software of GNSS, is used in this paper. In this paper, the least square method, the weighted least square method and the extended Kalman filter method are respectively applied to BDS / GPS single system for data solution. Then, the BDS system and GPS system are used for fusion positioning and the positioning results of the two systems are compared with that of the single system. Through the comparison of experiments, on the premise of using the extended Kalman filter method for positioning, when the GPS signal is not go

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Dardanelli, Gino, Antonino Maltese, Claudia Pipitone, Alessandro Pisciotta, and Mauro Lo Brutto. "NRTK, PPP or Static, That Is the Question. Testing Different Positioning Solutions for GNSS Survey." Remote Sensing 13, no. 7 (2021): 1406. http://dx.doi.org/10.3390/rs13071406.

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Worldwide, the determination of the coordinates from a Global Navigation Satellite System (GNSS) survey (in Network Real Time Kinematic, Precise Point Positioning, or static mode) has been analysed in several scientific and technical applications. Many of those have been carried out to compare Precise Point Positioning (PPP), Network Real Time Kinematic (NRTK), and static modes’ solutions, usually, using the latter as the true or the most plausible solution. This approach is not always possible as the static mode solution depends on several parameters (baseline length, acquisition time, ionosp

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Surono, Surono, Adhi Kusuma Negara, and Endro Sigit Kurniawan. "Purwarupa Differential Global Navigation Satellite System dengan Metode Real Time Kinematik Berbasis Radio Link Type Htox." Jurnal HIDROPILAR 6, no. 1 (2021): 8–13. http://dx.doi.org/10.37875/hidropilar.v6i1.166.

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Purwarupa Differential Global Navigation Satellite System bertujuan untuk meningkatkan akurasi dari receiver GNSS, dengan menambahkan referensi stasiun lokal untuk menambah informasi yang diterima dari satelit. Differential Global Navigation Satellite System ini menggunakan metode real time kinematik yang berbasiskan pada carrier phase (besaran sudut) dalam penentuan posisi data secara relatif dengan tingkat ketelitian mencapai satuan milimeter. Sistem RTK menggunakan data pengamatan fase data atau koreksi fase dikirim secara seketika dari stasiun referensi ke receiver pengguna. Hasil dari pur

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ENRÍQUEZ, DENNYS, and ALFONSO MORILLO. "ANÁLISIS DE LA POSICIÓN HORIZONTAL DEL SISTEMA GALILEO EN EL ECUADOR CONTINENTAL UTILIZANDO EL SOFTWARE RTKLIB." Revista Geoespacial 15, no. 2 (2019): 80. http://dx.doi.org/10.24133/geoespacial.v15i2.1243.

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La navegación por satélite ha evolucionado de manera que se ha podido evidenciar un rápido crecimiento del Sistema de Navegación Global por Satélite (GNSS), que actualmente, está conformado por GPS, GLONASS, BeiDou, QZSS, IRNSS y Galileo. La ausencia de información del comportamiento de la constelación Galileo sobre el Ecuador continental muestra problemas, ya que no se ha identificado el error que presenta el sistema sobre la posición horizontal, esto implica el desconocimiento de las aplicaciones útiles para dicha constelación. Por lo tanto, el objetivo del presente proyecto es analizar la p

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Sharma, Kanta Prasad, Ramesh C. Pooniaa, and Surendra Sunda. "Map matching algorithm: curve simplification for Frechet distance computing and precise navigation on road network using RTKLIB." Cluster Computing 22, S6 (2018): 13351–59. http://dx.doi.org/10.1007/s10586-018-1910-z.

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Zabala Haro, Monica Andrea, Jhonny Alvarez, Jomaira Ruilova, and Rodrigo Vinueza. "Estudio del Impacto de la Troposfera sobre la Señal de GPS L1 en la ciudad de Riobamba." Revista Perspectivas 2, no. 1 (2020): 38–44. http://dx.doi.org/10.47187/perspectivas.vol2iss1.pp38-44.2020.

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En el presente trabajo se analiza el retardo que sufre la señal GPS durante la transmisión a través del canal de propagación el mismo que es afectado por factores, características y condiciones de las capas de la atmosfera. La troposfera debido a las componentes húmedas y secas produce el retardo hidrostático el cual representa aproximadamente el 90% del retardo total de la señal que depende directamente por la presión atmosférica y el retardo troposférico el que se ve influenciado por el vapor de agua y la temperatura. Para la estimación del retardo se opta por la muestra de los datos de los

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Krasuski, Kamil, Janusz Ćwiklak, and Norbert Grzesik. "Accuracy Assessment of Aircraft Positioning by Using the DGLONASS Method in the GBAS System." Journal of KONBiN 45, no. 1 (2018): 97–124. http://dx.doi.org/10.2478/jok-2018-0006.

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Abstract The paper presents the accuracy results of aircraft positioning using the DGLONASS method in the GBAS augmentation system in air transport. In the research test, the coordinates of Cessna 172 aircraft were recovered on the basis of the DGLONASS technique. The calculations were executed in RTKLIB software in RTKPOST library in module “DGPS/DGNSS”. The raw GLONASS data from the onboard Topcon HiperPro receiver and also from the REF1 physical reference station were utilized in the research test. In the paper, the standard deviations of aircraft coordinates and integrity HPL and VPL param

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Krasuski, Kamil, Artur Goś, and Adam Ciećko. "The Research Into the Integrity Parameter in Air Transport Using GLONASS Data." Journal of KONBiN 50, no. 2 (2020): 231–41. http://dx.doi.org/10.2478/jok-2020-0037.

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AbstractThe article presents the results of the integrity parameter of the GLONASS satellite positioning system in civil aviation. As a source material for the research the authors used observation and navigation data of the GLONASS system from the onboard GNSS receiver mounted on the Cessna 172. In the research, the authors used a model to determine the aircraft position based on the single-frequency SPP code method for GLONASS L1-C/A observations. The numerical calculations were conducted in the RTKLIB software, in the RTKPOST library. The obtained results are interesting from the point of u

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Park, J. W., H. H. Jeong, J. S. Kim, and C. U. Choi. "Development of Open source-based automatic shooting and processing UAV imagery for Orthoimage Using Smart Camera UAV." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 22, 2016): 941–44. http://dx.doi.org/10.5194/isprsarchives-xli-b7-941-2016.

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Recently, aerial photography with unmanned aerial vehicle (UAV) system uses UAV and remote controls through connections of ground control system using bandwidth of about 430 MHz radio Frequency (RF) modem. However, as mentioned earlier, existing method of using RF modem has limitations in long distance communication. The Smart Camera equipments’s LTE (long-term evolution), Bluetooth, and Wi-Fi to implement UAV that uses developed UAV communication module system carried out the close aerial photogrammetry with the automatic shooting. Automatic shooting system is an image capturing device for th

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Wu, Qiong, Mengfei Sun, Changjie Zhou, and Peng Zhang. "Precise Point Positioning Using Dual-Frequency GNSS Observations on Smartphone." Sensors 19, no. 9 (2019): 2189. http://dx.doi.org/10.3390/s19092189.

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The update of the Android system and the emergence of the dual-frequency GNSS chips enable smartphones to acquire dual-frequency GNSS observations. In this paper, the GPS L1/L5 and Galileo E1/E5a dual-frequency PPP (precise point positioning) algorithm based on RTKLIB and GAMP was applied to analyze the positioning performance of the Xiaomi Mi 8 dual-frequency smartphone in static and kinematic modes. The results showed that in the static mode, the RMS position errors of the dual-frequency smartphone PPP solutions in the E, N, and U directions were 21.8 cm, 4.1 cm, and 11.0 cm, respectively, a

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Park, J. W., H. H. Jeong, J. S. Kim, and C. U. Choi. "Development of Open source-based automatic shooting and processing UAV imagery for Orthoimage Using Smart Camera UAV." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 22, 2016): 941–44. http://dx.doi.org/10.5194/isprs-archives-xli-b7-941-2016.

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Recently, aerial photography with unmanned aerial vehicle (UAV) system uses UAV and remote controls through connections of ground control system using bandwidth of about 430 MHz radio Frequency (RF) modem. However, as mentioned earlier, existing method of using RF modem has limitations in long distance communication. The Smart Camera equipments’s LTE (long-term evolution), Bluetooth, and Wi-Fi to implement UAV that uses developed UAV communication module system carried out the close aerial photogrammetry with the automatic shooting. Automatic shooting system is an image capturing device for th

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Ning, Fang-Shii, Xiaolin Meng, and Yi-Ting Wang. "Low-Cost Receiver and Network Real-Time Kinematic Positioning for use in Connected and Autonomous Vehicles." Journal of Navigation 72, no. 04 (2019): 917–30. http://dx.doi.org/10.1017/s037346331800111x.

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Connected and Autonomous Vehicles (CAVs) have been researched extensively for solving traffic issues and for realising the concept of an intelligent transport system. A well-developed positioning system is critical for CAVs to achieve these aims. The system should provide high accuracy, mobility, continuity, flexibility and scalability. However, high-performance equipment is too expensive for the commercial use of CAVs; therefore, the use of a low-cost Global Navigation Satellite System (GNSS) receiver to achieve real-time, high-accuracy and ubiquitous positioning performance will be a future

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Garcia, H. H., M. E. Mercurio, D. P. Noveloso, and R. B. Reyes. "POSITIONAL ACCURACY ASSESSMENT USING SINGLE AND MULTI-GNSS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W19 (December 23, 2019): 223–27. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w19-223-2019.

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Abstract. Global Navigation Satellite System (GNSS) provides users worldwide with a three-dimensional positioning, velocity and time solution 24-hour service using transmitted radio signals from orbiting satellites in space. Dependency on the number of satellites available during observation can improve satellite geometry and increase redundancy which be a factor for the quality of GNSS positioning result. Each position derived from different combinations of satellite systems were evaluated aside from using GPS only. The test is conducted by single and relative positioning method using survey

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Mohammed, Israa H., Tariq N. Ataiwe, and Hisham Al Sharaa. "Accuracy Assessment of a Variety of GPS Data Processing, Online Services and Software." Geomatics and Environmental Engineering 15, no. 4 (2021): 5–19. http://dx.doi.org/10.7494/geom.2021.15.4.5.

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The processing of GPS observations in precise positioning is complex and requires professional surveyors since it must be carried out after each static measurement. In GPS network adjustment, the obtaining of the correct coordinates of the determined point is possible after determining the components of GPS vectors and aligning the networks of these vectors, while PPP requires the availability of precise products for the reference satellites orbits and clock. For that reason, surveyors can take advantage of free online GPS data processing. In this paper, the authors compare the results obtaine

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Chamorro Navarro Ferreira, Samara. "Análise preliminar dos impactos do uso de mais de um sistema GNSS no posicionamento preciso." Revista Cartográfica, no. 92 (September 27, 2019): 31–51. http://dx.doi.org/10.35424/rcarto.i92.435.

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Para la obtención de coordenadas precisas en Geodesia Satelital se utilizan las técnicas de posicionamiento relativo y de Posicionamiento Preciso por Punto (PPP). Se presenta en este trabajo un análisis preliminar de los impactos en la Dilución de la Precisión (DOP) y en la calidad del posicionamiento causados por el rastreo de diversos Sistema  Globales de Navegación por Satélites (GNSS), con la utilización de receptores de simple y doble frecuencia, considerando sesiones de dos y 24 horas de duración en dos épocas del año y, por lo tanto, sometidas a distintas condiciones ionosféricas.

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Angrisano, Antonio, Gino Dardanelli, Anna Innac, Alessandro Pisciotta, Claudia Pipitone, and Salvatore Gaglione. "Performance Assessment of PPP Surveys with Open Source Software Using the GNSS GPS–GLONASS–Galileo Constellations." Applied Sciences 10, no. 16 (2020): 5420. http://dx.doi.org/10.3390/app10165420.

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In this work, the performance of the multi-GNSS (Global Navigation Satellite System) Precise Point Positioning (PPP) technique, in static mode, is analyzed. Specifically, GPS (Global Positioning System), GLONASS, and Galileo systems are considered, and quantifying the Galileo contribution is one of the main objectives. The open source software RTKLib is adopted to process the data, with precise satellite orbits and clocks from CNES (Centre National d’Etudes Spatiales) and CLS (Collecte Localisation Satellites) analysis centers for International GNSS Service (IGS). The Iono-free model is used t

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Abdul Jabbar, A., I. Aicardi, N. Grasso, and M. Piras. "URBAN DATA COLLECTION USING A BIKE MOBILE SYSTEM WITH A FOSS ARCHITECTURE." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W2 (July 5, 2017): 3–9. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w2-3-2017.

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European community is working to improve the quality of the life in each European country, in particular to increase the quality air condition and safety in each city. The quality air is daily monitored, using several ground station, which do not consider the variation of the quality during the day, evaluating only the average level. In this case, it could be interesting to have a “smart” system to acquire distributed data in continuous, even involving the citizens. On the other hand, to improve the safety level in urban area along cycle lane, road and pedestrian path, exist a lot of algorithm

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Krasuski, Kamil, Janusz C´wiklak, and Henryk Jafernik. "Aircraft positioning using PPP method in GLONASS system." Aircraft Engineering and Aerospace Technology 90, no. 9 (2018): 1413–20. http://dx.doi.org/10.1108/aeat-06-2017-0147.

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Purpose The purpose of the study is focused on implementation of Global Navigation Satellite System (GLONASS) technique in civil aviation for recovery of aircraft position using Precise Point Positioning (PPP) method in kinematic mode. Design/methodology/approach The aircraft coordinates of Cessna 172 plane in XYZ geocentric frame were obtained based on GLONASS code and phase observations for PPP method. The numerical computations were executed in post-processing mode in the RTKPOST module in RTKLIB program. The mathematical scheme of equation observation of PPP method was solved using Kalman

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Bae, Tae-Suk. "Network-based RTK Performance for Drone Navigation." E3S Web of Conferences 94 (2019): 01006. http://dx.doi.org/10.1051/e3sconf/20199401006.

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The Real-time Kinematic (RTK) was predominantly used for the positioning of the ground applications including moving vehicles. Due to the limited baseline lengths, the Network-based RTK (NRTK) was introduced since late-1990s, and successfully applied to the high precision surveying purposes for more than a decade. We conducted the experiments to analyze the performance of the single-baseline RTK (SRTK) as well as the NRTK using one of the operational NRTK systems of Korea, which is the Virtual Reference Stations (VRS) technique. A total of 46 Continuously Operating Reference Stations (CORS) ar

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Kuntjoro, Wedyanto, D. D. Wijaya, A. Pramansyah, Z. A. J. Tanuwijaya, and Dhota Pradipta. "Zenith Wet Delay (ZWD) Seasonal Correlation with Rainfall in Cikapundung River Discharge, North Bandung Region, Indonesia." E3S Web of Conferences 94 (2019): 05004. http://dx.doi.org/10.1051/e3sconf/20199405004.

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In a GPS survey study, the biases produced by the ionosphere and troposphere layers are known as ionospheric biases and troposphere bias. The distance deviation due to the slowing travel time of GPS signals in troposphere is commonly referred to as Zenith Tropospheric Delay (ZTD). The magnitude of this ZTD can also be used to characterize and analyze the troposphere conditions around the GPS observation area. This can be done by separating the wet delay component from ZTD, so as to obtain Zenith Wet Delay (ZWD) and dry component so as to obtain Zenith Hydrostatic Delay (ZHD). The total moistur

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Jafernik, Henryk, Janusz Ćwiklak, Kamil Krasuski, and Jarosław Kozuba. "Application of IGS Products for Air Navigation." Annual of Navigation 24, no. 1 (2017): 285–300. http://dx.doi.org/10.1515/aon-2017-0021.

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Abstract Single Point Positioning (SPP) method is widely used in air, marine, and land navigation to determine the user’s position in real time and post factum. A typical accuracy for this method of determining the user’s position in the static mode is approximately 10 meters. In air operations, the SPP method accuracy can be several times lower and that may cause problems with precise positioning of an aircraft. The authors of this article presented preliminary results of research concerning aircraft positioning in the kinematic mode based on GPS observations. For this purpose, an in-flight e

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Andrei, Constantin-Octavian, Sonja Lahtinen, Maaria Nordman, et al. "GPS Time Series Analysis from Aboa the Finnish Antarctic Research Station." Remote Sensing 10, no. 12 (2018): 1937. http://dx.doi.org/10.3390/rs10121937.

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Continuous Global Positioning System (GPS) observations have been logged at the Finnish Antarctic research station (Aboa) since February 2003. The station is located in Dronning Maud Land, East Antarctica. Almost 5000 daily observation files have been archived based on yearly scientific expeditions. These files have not been fully analysed until now. This study reports for the first time on the consistent and homogeneous data processing and analysis of the 15-year long time series. Daily coordinates are obtained using Precise Point Positioning (PPP) processing based on two approaches. The firs

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Zhang, Shaocheng, Shikang Du, Wei Li, and Guangxing Wang. "Evaluation of the GPS Precise Orbit and Clock Corrections from MADOCA Real-Time Products." Sensors 19, no. 11 (2019): 2580. http://dx.doi.org/10.3390/s19112580.

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The Japanese Quasi-Zenith Satellite System (QZSS) is a regional navigation satellite system covering the entire Asia-Oceania region. Except for the standard satellite navigation signals, QZSS satellites also broadcast L6E augmentation signals with real time GNSS precise orbit every 30 s and clock messages every 1 s, which is very important and necessary for Real-Time precise point positioning (RTPPP) applications. In this paper, the MADOCA real-time services derived from L6E augmentation signals were evaluated for both accuracy and availability compared with IGS final products. To avoid the da

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Krasuski, Kamil, and Damian Wierzbicki. "New Methodology for Computing the Aircraft’s Position Based on the PPP Method in GPS and GLONASS Systems." Energies 14, no. 9 (2021): 2525. http://dx.doi.org/10.3390/en14092525.

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In the field of air navigation, there is a constant pursuit for new navigation solutions for precise GNSS (Global Navigation Satellite System) positioning of aircraft. This study aims to present the results of research on the development of a new method for improving the performance of PPP (Precise Point Positioning) positioning in the GPS (Global Positioning System) and GLONASS (Globalnaja Nawigacionnaja Sputnikovaya Sistema) systems for air navigation. The research method is based on a linear combination of individual position solutions from the GPS and GLONASS systems. The paper shows a com

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Bolcaen, Julie, Shankari Nair, Cathryn Driver, Tebatso Boshomane, Thomas Ebenhan, and Charlot Vandevoorde. "Novel Receptor Tyrosine Kinase Pathway Inhibitors for Targeted Radionuclide Therapy of Glioblastoma." Pharmaceuticals 14, no. 7 (2021): 626. http://dx.doi.org/10.3390/ph14070626.

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Glioblastoma (GB) remains the most fatal brain tumor characterized by a high infiltration rate and treatment resistance. Overexpression and/or mutation of receptor tyrosine kinases is common in GB, which subsequently leads to the activation of many downstream pathways that have a critical impact on tumor progression and therapy resistance. Therefore, receptor tyrosine kinase inhibitors (RTKIs) have been investigated to improve the dismal prognosis of GB in an effort to evolve into a personalized targeted therapy strategy with a better treatment outcome. Numerous RTKIs have been approved in the

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Yan, Fei, Xueqi Hu, Lidan Xu, and Yongrui Wu. "Construction and Accuracy Analysis of a BDS/GPS-Integrated Positioning Algorithm for Forests." Croatian journal of forest engineering 42, no. 2 (2021): 321–35. http://dx.doi.org/10.5552/crojfe.2021.1105.

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The objective of this study was to construct a BeiDou navigation satellite system (BDS)/global positioning system (GPS)-integrated positioning algorithm that meets the accuracy requirement of forest surveys and to analyze its accuracy to provide theoretical and technical support for accurate positioning and navigation in forests. The Quercus variabilis broad-leaved forest in Jiufeng National Forest Park and the Sabina Coniferous forest in Dongsheng Bajia forest farm were selected as the study area. A Sanding T-23 multi-frequency three-constellation receiver and a u-blox NEO-M8T multi-constella

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Tai, Katherine Yuxi, Jad El Abiad, Carol Morris, Adam Levin, and Mark Christopher Markowski. "Efficacy of receptor tyrosine kinase inhibitors (RTKIs) and immunotherapy (PD-1/PD-L1) for treatment of osseous vs. soft tissue metastases of renal cell carcinoma (RCC)." Journal of Clinical Oncology 37, no. 15_suppl (2019): e16094-e16094. http://dx.doi.org/10.1200/jco.2019.37.15_suppl.e16094.

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e16094 Background: Checkpoint inhibitors and RTKIs have changed the standard of care in metastatic RCC. However, anecdotal evidence suggests these therapies may be less effective for treating bone metastases than soft tissue metastases. Our study aimed to evaluate this potential difference in treatment response between osseous and visceral metastases. Methods: Our institutional Cancer Registry database was queried for RCC patients treated at Johns Hopkins Hospital from 1997-2017 (n = 2212). 68 patients were identified with measurable bone and soft tissue metastatic disease who were treated wit

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Grassot, J. "RTKdb: database of receptor tyrosine kinase." Nucleic Acids Research 31, no. 1 (2003): 353–58. http://dx.doi.org/10.1093/nar/gkg036.

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Abdollahi, Amir, Minglun Li, Gong Ping, et al. "Inhibition of platelet-derived growth factor signaling attenuates pulmonary fibrosis." Journal of Experimental Medicine 201, no. 6 (2005): 925–35. http://dx.doi.org/10.1084/jem.20041393.

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Pulmonary fibrosis is the consequence of a variety of diseases with no satisfying treatment option. Therapy-induced fibrosis also limits the efficacy of chemotherapy and radiotherapy in numerous cancers. Here, we studied the potential of platelet-derived growth factor (PDGF) receptor tyrosine kinase inhibitors (RTKIs) to attenuate radiation-induced pulmonary fibrosis. Thoraces of C57BL/6 mice were irradiated (20 Gy), and mice were treated with three distinct PDGF RTKIs (SU9518, SU11657, or Imatinib). Irradiation was found to induce severe lung fibrosis resulting in dramatically reduced mouse s

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Roy, Mridul, Yu-Hao Luo, Mao Ye, and Jing Liu. "Nonsmall Cell Lung Cancer Therapy: Insight into Multitargeted Small-Molecule Growth Factor Receptor Inhibitors." BioMed Research International 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/964743.

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To date, lung cancer is the leading cause of cancer-related death worldwide, among which nonsmall cell lung cancer (NSCLC) comprises about 85%. Taking into account the side effects of surgery, radiation, platinum-based doublet chemotherapy, and the growth self-sufficiency characteristic of cancer cells, drugs have been discovered toward growth factor receptor (GFR) to treat NSCLC. As expected, these drugs provide a greater benefit. To increase the efficacy of such growth factor receptor tyrosine kinase inhibitors (RTKIs), coinhibition of GFR signaling pathways and combination of inhibitors alo

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Remon, Jordi, Teresa Moran, Diego Alcaraz, et al. "Treatment strategies after failure to reversible tyrosine kinase inhibitors (rTKI) in EGFR mutant (mut) non-small cell lung cancer (NSCLC) patients (p): A retrospective analysis of 41 Spanish p." Journal of Clinical Oncology 31, no. 15_suppl (2013): e19089-e19089. http://dx.doi.org/10.1200/jco.2013.31.15_suppl.e19089.

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e19089 Background: Different therapeutic approaches have been used in the clinical setting in NSCLC p harbouring EGFR mutations progressing to rTKI, although the standard of care in this situation is still not well established. Methods: A multi-institutional database from four different centers in Spain was review to identify EGFR mut p with acquired resistance to rTKI in order to evaluate the therapeutic strategies after rTKI failure and the effect on the post-progression survival (PPS) of these treatments. Results: 41 p with acquired resistance to rTKI were identified: 63% female; median (m)

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Wisniewski, Bartosz, Krzysztof Bruniecki, and Marek Moszynski. "Evaluation of RTKLIB's Positioning Accuracy Using low-cost GNSS Receiver and ASG-EUPOS." TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation 7, no. 2 (2013): 79–85. http://dx.doi.org/10.12716/1001.07.01.10.

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Pottier, Charles, Margaux Fresnais, Marie Gilon, Guy Jérusalem, Rémi Longuespée, and Nor Eddine Sounni. "Tyrosine Kinase Inhibitors in Cancer: Breakthrough and Challenges of Targeted Therapy." Cancers 12, no. 3 (2020): 731. http://dx.doi.org/10.3390/cancers12030731.

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Receptor tyrosine kinases (RTKs) are key regulatory signaling proteins governing cancer cell growth and metastasis. During the last two decades, several molecules targeting RTKs were used in oncology as a first or second line therapy in different types of cancer. However, their effectiveness is limited by the appearance of resistance or adverse effects. In this review, we summarize the main features of RTKs and their inhibitors (RTKIs), their current use in oncology, and mechanisms of resistance. We also describe the technological advances of artificial intelligence, chemoproteomics, and micro

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Tai, Katherine Yuxi, Jad M. El Abiad, Carol D. Morris, Mark Christopher Markowski, and Adam S. Levin. "Comparing the Responses of Osseous Versus Soft-Tissue Metastases of Renal Cell Carcinoma to Receptor Tyrosine Kinase Inhibitors and Immunotherapy." Kidney Cancer 4, no. 3 (2020): 151–58. http://dx.doi.org/10.3233/kca-200094.

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BACKGROUND: Checkpoint inhibitors and receptor tyrosine kinase inhibitors (RTKIs) have changed the standard of care for metastatic renal cell carcinoma (mRCC). Anecdotal evidence suggests these therapies may be less effective for treating bone than soft-tissue metastases. PURPOSE: We performed a retrospective review evaluating the relative clinical responses in soft-tissue and bone metastases in patients undergoing therapy using RTKIs and anti-programmed death-1 (PD-1) agents for mRCC. METHODS: Of the 2,212 patients in our institutional cancer registry with renal cell carcinoma (1997–2017), 68

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Verstraete, Kenneth, Gonzalez Vandriessche, Mariska Januar, et al. "Structural insights into the extracellular assembly of the hematopoietic Flt3 signaling complex." Blood 118, no. 1 (2011): 60–68. http://dx.doi.org/10.1182/blood-2011-01-329532.

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Abstract The class III receptor tyrosine kinase (RTKIII) Fms-like tyrosine kinase receptor 3 (Flt3) and its cytokine ligand (FL) play central roles in hematopoiesis and the immune system, by establishing signaling cascades crucial for the development and homeostasis of hematopoietic progenitors and antigen-presenting dendritic cells. However, Flt3 is also one of the most frequently mutated receptors in hematologic malignancies and is currently a major prognostic factor and clinical target for acute myeloid leukemia. Here, we report the structural basis for the Flt3 ligand-receptor complex and

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Das, Satya, and Arvind Dasari. "Novel therapeutics for patients with well-differentiated gastroenteropancreatic neuroendocrine tumors." Therapeutic Advances in Medical Oncology 13 (January 2021): 175883592110180. http://dx.doi.org/10.1177/17588359211018047.

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Gastroenteropancreatic (GEP) neuroendocrine tumors (NETs) represent the most common subtype of NETs. The incidence of all NETs, and specifically GEP NETs, has risen exponentially over the last three decades. Only within the past several years have these tumors been appropriately classified, allowing for meaningful drug development. Broadly, some of the most exciting drug classes being developed for patients with well-differentiated GEP NETs include newer types of peptide receptor radionuclide therapy (PRRT) or combinations which increase the potency of lutetium-177 (177Lu)-Dotatate, novel mult

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Wagiran, W. "Penggunaan Data Penginderaan Jauh dalam Perencanaan Pembangunan Permukiman Transmigrasi." Forum Geografi 8, no. 2 (2016): 82. http://dx.doi.org/10.23917/forgeo.v8i2.4823.

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Ada banyak tahap yang harus dikerjakan dalam program perencanaan pemungkinan transmigrasi. Tahap awal dari kegiatan ini adalah menentukan area untuk lokasi transmigrasi. Informasi fisik area terse but dapat diperoleh dari data penginderaan jauh, baik citra satelit maupun foto udara. Tidak semua tahap dalam kegiatan ini memerlukan data bantu foto udara. Tahap yang memerlukan data bantu foto udara adalah tahap: perencanaan jangka panjang, perencanaan jangka menengah, "SKPT" dan "RTKIM".

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Kumar, Naveen, Nishi R. Sharma, Hinh Ly, Tristram G. Parslow, and Yuying Liang. "Receptor Tyrosine Kinase Inhibitors That Block Replication of Influenza A and Other Viruses." Antimicrobial Agents and Chemotherapy 55, no. 12 (2011): 5553–59. http://dx.doi.org/10.1128/aac.00725-11.

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ABSTRACTWe have previously reported that two receptor tyrosine kinase inhibitors (RTKIs), called AG879 and tyrphostin A9 (A9), can each block the replication of influenza A virus in cultured cells. In this study, we further characterized thein vitroantiviral efficacies and specificities of these agents. The 50% effective concentration (EC50) of each against influenza A was found to be in the high nanomolar range, and the selectivity index (SI = 50% cytotoxic concentration [CC50]/EC50) was determined to be >324 for AG879 and 50 for A9, indicating that therapeutically useful concentrations of

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Medveďová, Alžbeta, Adriana Havlíková, and Ľubomír Valík. "Growth of Staphylococcus aureus 2064 described by predictive microbiology: From primary to secondary models." Acta Chimica Slovaca 12, no. 2 (2019): 175–81. http://dx.doi.org/10.2478/acs-2019-0024.

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Abstract The growth of Staphylococcus aureus 2064 isolate in model nutrient broth was studied as affected by temperature and water activity using principles and models of predictive microbiology. Specific rates resulting from growth curves fitted by the Baranyi model were modelled by the secondary Ratkowsky model for suboptimal temperature range (RTKsub) as well as the Ratkowsky extended model (RTKext) and cardinal model (CM) in the whole temperature range. With the biological background of the RTKext model, cardinal values of temperature Tmin = 6.06 °C and Tmax = 47.9 °C and water activity aw

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Merchan, J. R., H. C. Pitot, R. Qin, et al. "Phase I/II trial of CCI 779 and bevacizumab in advanced renal cell carcinoma (RCC): Safety and activity in RTKI refractory RCC patients." Journal of Clinical Oncology 27, no. 15_suppl (2009): 5039. http://dx.doi.org/10.1200/jco.2009.27.15_suppl.5039.

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5039 Background: Combined mTOR and VEGF blockade is a potentially promising and rational strategy for the treatment of advanced RCC. We previously reported the phase I safety and efficacy results of CCI 779 (C) +bevacizumab (B) n RTKI naïve stage IV RCC patients (pts) (J Clin Oncol. 2007;25[18S Suppl]:5034). We now report the interim results of the phase 2 study of C+B in RTKI refractory RCC patients. Methods: Design: Open label, phase I/II study of C+B in advanced RCC pts. Patients with measurable stage IV RCC with a component of clear/conventional cell type, performance status 0–2 and good o

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Pivik, Jayne, Joan McComas, Ian MaCfarlane, and Marc Laflamme. "Using Virtual Reality to Teach Disability Awareness." Journal of Educational Computing Research 26, no. 2 (2002): 203–18. http://dx.doi.org/10.2190/wacx-1vr9-hcmj-rtkb.

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Giles, Francis J., Alison T. Stopeck, Lewis R. Silverman, et al. "SU5416, a small molecule tyrosine kinase receptor inhibitor, has biologic activity in patients with refractory acute myeloid leukemia or myelodysplastic syndromes." Blood 102, no. 3 (2003): 795–801. http://dx.doi.org/10.1182/blood-2002-10-3023.

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Abstract Increased bone marrow angiogenesis and vascular endothelial growth factor (VEGF) levels are adverse prognostic features in patients with acute myeloid leukemia (AML) or myelodysplastic syndromes (MDSs). VEGF is a soluble circulating angiogenic molecule that stimulates signaling via receptor tyrosine kinases (RTKs), including VEGF receptor 2 (VEGFR-2). AML blasts may express VEGFR-2, c-kit, and FLT3. SU5416 is a small molecule RTK inhibitor (RTKI) of VEGFR-2, c-kit, and both wild-type and mutant FLT3. A multicenter phase 2 study of SU5416 was conducted in patients with refractory AML o

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Dadrich, M., P. Flechsig, U. Wirkner та ін. "Reduction of Radiation-induced Pulmonary Fibrosis in a Murine Model by Combined PDGF and TGF-β RTKI". International Journal of Radiation Oncology*Biology*Physics 75, № 3 (2009): S174. http://dx.doi.org/10.1016/j.ijrobp.2009.07.406.

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Jumaah, Hayder A. "Modified Archie’s parameters for estimating water saturation for carbonate reservoir in north of Iraq." Journal of Petroleum Exploration and Production Technology 11, no. 10 (2021): 3689–97. http://dx.doi.org/10.1007/s13202-021-01258-3.

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AbstractArchie’s parameters, cementation factor (m), saturation exponent (n) and tortuosity factor (a), are general factor that have effects on water saturation magnitude, due to their sensitivity to pores distribution, lithofacies properties and wettability, particularly in carbonate reservoirs. Water saturation magnitude has a direct effect in estimating initial oil-in-place values, and inaccuracy in its values will lead to huge impact errors in initial oil-in-place values, so it would affect the economics of field management and development plans. In this paper, the main objective was to in

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