Relevant bibliographies by topics / Point source analysis

Academic literature on the topic 'Point source analysis'

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Published: 10 December 2022
Last updated: 28 January 2023

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Journal articles on the topic "Point source analysis"

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Qichang An, Qichang An, Jingxu Zhang Jingxu Zhang, Fei Yang Fei Yang, and Hongchao Zhao Hongchao Zhao. "Normalized point source sensitivity analysis in GSSM prototype." Chinese Optics Letters 15, no. 11 (2017): 111202. http://dx.doi.org/10.3788/col201715.111202.

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BELLENI-MORANTE, A., W. LAMB, and A. C. McBRIDE. "PHOTON TRANSPORT PROBLEMS INVOLVING A POINT SOURCE." Analysis and Applications 05, no. 01 (January 2007): 77–93. http://dx.doi.org/10.1142/s0219530507000894.

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We consider both a direct and an inverse problem of photon transport in an interstellar cloud with a point photon source. By using a non-rigorous (but physically reasonable) procedure, we prove that the direct problem has a unique solution and that the inverse problem also has a unique solution, under the assumptions that a single value of the photon far-field is known and the scattering cross-section is suitably small. Finally, we show in a rigorous way that the direct problem has a unique distributional solution if the point source is modelled by a Dirac δ functional.
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Bellenghi, C., T. Glauch, C. Haack, T. Kontrimas, H. Niederhausen, R. Reimann, and M. Wolf. "A new and improved IceCube point source analysis." Journal of Instrumentation 16, no. 11 (November 1, 2021): C11002. http://dx.doi.org/10.1088/1748-0221/16/11/c11002.

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Abstract The IceCube Neutrino Observatory, a cubic kilometer scale Cherenkov detector deployed in the deep ice at the geographic South Pole, investigates extreme astrophysical phenomena by studying the corresponding high-energy neutrino signal. Its discovery of a diffuse flux of astrophysical neutrinos with energies up to the PeV scale in 2013 has triggered a vast effort to identify the mostly unknown sources of these high energy neutrinos. Here, we present a new IceCube point-source search that improves the accuracy of the statistical analysis, especially at energies of a few TeV and below. The new approach is based on multidimensional kernel density estimation for the probability density functions and new estimators for the observables, namely the reconstructed energy and the estimated angular uncertainty on the reconstructed arrival direction. The more accurate analysis provides an improvement in discovery potential up to ∼30% over previous works for hard spectrum sources.
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Miller, E. K. "Time-Domain Far-Field Analysis of Radiation Sources and Point-Source Coherence." IEEE Antennas and Propagation Magazine 54, no. 2 (April 2012): 100–108. http://dx.doi.org/10.1109/map.2012.6230721.

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Chung, Jaywan, Yong-Jung Kim, and Marshall Slemrod. "An explicit solution of Burgers equation with stationary point source." Journal of Differential Equations 257, no. 7 (October 2014): 2520–42. http://dx.doi.org/10.1016/j.jde.2014.05.046.

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Dubath, P., J. Knödlseder, G. K. Skinner, P. Connell, I. Kreykenbohm, A. Strong, P. Sizun, et al. "TheINTEGRALspectrometer SPI: performance of point-source data analysis." Monthly Notices of the Royal Astronomical Society 357, no. 2 (February 2005): 420–28. http://dx.doi.org/10.1111/j.1365-2966.2005.08675.x.

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Hu, Yaozhong, and Guanglin Rang. "Identification of the Point Sources in Some Stochastic Wave Equations." Abstract and Applied Analysis 2014 (2014): 1–11. http://dx.doi.org/10.1155/2014/219876.

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We introduce and study a type of (one-dimensional) wave equations with noisy point sources. We first study the existence and uniqueness problem of the equations. Then, we assume that the locations of point sources are unknown but we can observe the solution at some other location continuously in time. We propose an estimator to identify the point source locations and prove the convergence of our estimator.
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Cekirge, H. "Auxiliary source point method: the Laplace equation." Engineering Analysis with Boundary Elements 4, no. 4 (December 1987): 186–89. http://dx.doi.org/10.1016/0955-7997(87)90040-3.

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Benamou, Jean-David, Guillaume Chazareix, Wilbert IJzerman, and Giorgi Rukhaia. "Point source regularization of the finite source reflector problem." Journal of Computational Physics 456 (May 2022): 111032. http://dx.doi.org/10.1016/j.jcp.2022.111032.

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AN Qi-chang, 安其昌, 张景旭 ZHANG Jing-xu, 杨. 飞. YANG Fei, 赵宏超 ZHAO Hong-chao, and 曹海峰 CAO Hai-feng. "Normalized point source sensitivity analysis of large sparse telescopes." Chinese Optics 12, no. 3 (2019): 567–74. http://dx.doi.org/10.3788/co.20191203.0567.

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Dissertations / Theses on the topic "Point source analysis"

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Fulford, Ross Anthony. "Structure-borne sound power and source characterisation in multi-point-connected systems." Thesis, University of Liverpool, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284262.

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Xu, Yang. "Performance Analysis of Point Source Model with Coincident Phase Centers in FDTD." Digital WPI, 2014. https://digitalcommons.wpi.edu/etd-theses/214.

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The Finite Difference Time Domain (FDTD) Method has been a powerful tool in numerical simulation of electromagnetic (EM) problems for decades. In recent years, it has also been applied to biomedical research to investigate the interaction between EM waves and biological tissues. In Wireless Body Area Networks (WBANs) studies, to better understand the localization problem within the body, an accurate source/receiver model must be investigated. However, the traditional source models in FDTD involve effective volume and may cause error in near field arbitrary direction. This thesis reviews the basic mathematical and numerical foundation of the Finite Difference Time Domain method and the material properties needed when modeling a human body in FDTD. Then Coincident Phase Centers (CPCs) point sources models have been introduced which provide nearly the same accuracy at the distances as small as 3 unit cells from the phase center. Simultaneously, this model outperforms the usual sources in the near field when an arbitrary direction of the electric or magnetic dipole moment is required.
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Towler, Jerry Alwynne. "Autonomous Aerial Localization of Radioactive Point Sources via Recursive Bayesian Estimation and Contour Analysis." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/43465.

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The rapid, accurate determination of the positions and strengths of sources of dangerous radioactivity takes high priority after a catastrophic event to ensure the safety of personnel, civilians, and emergency responders. This thesis presents approaches and algorithms to autonomously investigate radioactive material using an unmanned aerial vehicle.
Performing this autonomous analysis comprises five major steps: ingress from a base of operations to the danger zone, initial detection of radioactive material, measurement of the strength of radioactive emissions, analysis of the data to provide position and intensity estimates, and finally egress from the area of interest back to the launch site. In all five steps, time is of critical importance: faster responses promise potentially saved lives.
A time-optimal ingress and egress path planning method solves the first and last steps. Vehicle capabilities and instrument sensitivity inform the development of an efficient search path within the area of interest. Two algorithmsâ a grid-based recursive Bayesian estimator and a novel radiation contour analysis methodâ are presented to estimate the position of radioactive sources using simple gross gamma ray event count data from a nondirectional radiation detector. The latter procedure also correctly estimates the number of sources present and their intensities.
Ultimately, a complete unsupervised mission is developed, requiring minimal initial operator interaction, that provides accurate characterization of the radiation environment of an area of interest as quickly as reasonably possible.
Master of Science
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Raine, Teresa Jeannette 1976. "Modeling and analysis of non-point source runoff and best management practice devices in Acton, MA." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80167.

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Thesis (M.Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
Includes bibliographical references (leaves 33-35).
by Teresa Jeannette Raine.
M.Eng.
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Alagoz, Eda. "Kinetic Analysis Of Glucose-6-phosphate Branch Point In Saccharomyces Cerevisiae." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606556/index.pdf.

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Glycolysis is the main metabolic route in Saccharomyces cerevisiae and it is the sequence of enzyme catalyzed reactions that oxidatively convert glucose to pyruvic acid in the yeast cytoplasm. In addition to the basic steps, glycolysis involves branch points providing the intermediary building blocks of the cell (i.e amino acids and nucleotides). One of these pathways is glucose-6-phosphate branch point which is a junction of glycolytic pathway and pentose phosphate pathway. At this point glucose-6-phosphate can be converted to fructose-6-phosphate a metabolite of glycolytic pathway by phosphoglucoisomerase or it can be dehydrogenated to 6-phosphogluconolactone by glucose-6-phosphate dehydrogenase which is the first enzyme of the pentose phosphate pathway. In this study, the influence of different nitrogen sources on the flux distribution through the pentose phosphate pathway and glycolysis in Saccharomyces cerevisiae was examined. For this purpose, four different compositions of nitrogen sources were used in growth media. The growth medium contained one of the following composition of nitrogen sources
only ammonium sulfate, only yeast nitrogen base, ammonium sulfate and histidine, yeast nitrogen base and histidine. Histidine was added because its synthesis branches from pentose phosphate pathway. In order to analyse the effect of the different compositions of nitrogen sources on the physiology of the yeast, specific activities of hexokinase, phosphoglucose isomerase, glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase enzymes were measured in the crude extracts of the biomass samples taken in the late exponential phase of the cultures. Addition of histidine caused an increase in the specific activities of all the enzymes analysed in medium containing ammonium sulfate. The specific activity of hexokinase, phosphoglucose isomerase and glucose-6-phosphate dehydrogenase in medium containing yeast nitrogen base and histidine were higher than medium containing yeast nitrogen base. However, the specific activity of 6-phosphogluconate dehydrogenase decreased 3.1% in medium containing yeast nitrogen base and histidine medium with respect to medium with only yeast nitrogen base. The OD value and dry weight in the culture containing histidine aminoacid was higher than the cultures contaning only ammonium sulfate and only yeast nitrogen base. Also the period of the exponential phase was shorter in medium containing ammonium sulfate and histidine and yeast nitrogen base and histidine than medium only ammonium sulfate and only yeast nitrogen base.
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Manglallan, Eduardo P. "Water quality baseline study and non-point source pollution analysis on Waikele Stream, West Loch Estuary, Oahu, Hawaii." Thesis, Monterey, California. Naval Postgraduate School, 1994. http://hdl.handle.net/10945/26334.

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TAKEDA, Kazuya, Takanori NISHINO, and Kenta NIWA. "Selective Listening Point Audio Based on Blind Signal Separation and Stereophonic Technology." Institute of Electronics, Information and Communication Engineers, 2009. http://hdl.handle.net/2237/15055.

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Cziesch, Jarrett. "An Introduction to Identifying Nonpoint Sources of Water Pollution Using a Modified Land Use Conflict Analysis Identification Strategy (LUCIS) Model, Non-point Source Identification Strategy: NPSIS." The University of Arizona, 2015. http://hdl.handle.net/10150/576109.

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This paper examines the Non-Point Source Identification Strategy (NPSIS); a modification of the Land Use Conflict Identification Strategy (LUCIS): NPSIS is a raster model useful for identifying non-point sources of water pollution from three known contributors (agriculture, domestic, and natural background). By using a standard operating procedure, developers are able to create standardized datasets useful for identifying non-point sources of water pollution throughout the contiguous United States. The NPSIS model process requires the use of three “non-point source water pollution” contributors. A contributor is termed as a Non-Point Category (NPC) that contains collective elements (i.e. nutrient applications for agricultural purposes and urban runoff from highly developed areas). Using a survey, water resource professionals familiar with chosen study areas rank each NPC element according to potential impact to water quality. Following the survey, raster datasets that represent each NPC and impact to water quality are created using a lowest to highest (“1-9”) ordinal rank system derived from survey results after which each dataset is normalized using a (“1-3”) ordinal rank. Finally, the normalized NPC datasets are combined into one final model useful for identifying each dominant NPC by rank and location within a specified USGS watershed. In conclusion, the modifications to the LUCIS method yields results beneficial for identifying non-point source loads of water pollution.
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Koo, Bonjin. "A study on the filtration efficiency of micro particle pollutants from non-point source : focused on road runoff and CSOs." Thesis, Nice, 2014. http://www.theses.fr/2014NICE4092/document.

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L’imperméabilisation des surfaces et l’augmentation des débits de pointe sont liés au développement croissant des environnements urbains. Avec cette croissance urbaine, les processus de ruissellement sont largement affectés et représentent un secteur dans lequel des actions doivent être entreprises afin d’assurer à la fois le développement économique et la protection de l’environnement et des ressources en eau. Le ruissellement est fréquemment associé à des pollutions diffuses (Non Point Source) qui ne sont généralement pas prises en compte dans les dispositifs classiques de régulation hydraulique. L’objectif de cette recherche était d’évaluer les performance de dispositifs de filtration sur les micro particules polluantes diffuses issues des chaussées routières et des déversoirs d’orages des réseaux d’assainissement unitaires (Combined Sewer Overflows – CSOs). Le protocole expérimental implique de mesurer, dans un premier temps, la taille et les caractéristiques des particules polluantes diffuses et ensuite, de réaliser une procédure identique à la sortie des installations de filtration et de traitement. Les modifications dans la distribution de la taille des particules et de leurs caractéristiques sont alors analysées. Les quatre principaux dispositifs de filtration disponibles - Expanded Polypropylene (EPP), Expanded polystyrene (EPS), Perlite pour les particules flottantes et Zeolite pour les non flottantes – ont été implanté sur un équipement de test et les résultats comparés. Une modélisation 3D (CFD) a été réalisée afin d’optimiser la conception de la disposition de filtration
The impermeable area and the peak discharge volume have been consistently increasing due to widening of city development and renewal. Thus, distortion of water cycle has been serious problem compared to the past. When it comes to NPS pollution, lack of information on the load and characteristics of pollutants led to the insufficient reduction measures. The purpose of this study is to investigate the effectiveness of filters to control micro particles from non-point sources, especially from road runoff and Combined Sewer Overflows (CSOs). The study first examined the particle size and characteristics of NPS pollutants, and then analyzed the head loss, treatment efficiency and changes in particle size distribution before and after the treatment using device type facilities. The four most commonly used filters - Expanded Polypropylene (EPP), Expanded polystyrene (EPS), and Perlite as floatability filtering materials, and Zeolite as non-floatability - were compared. The upward-type filtering equipment was manufactured for the lab experiment, and CFD modeling was conducted to identify optimized design parameters. The results showed that the ratio of micro particles(＜100 ㎛), to which the filtering process can be applied, was highest in samples from the road runoff, followed by one from the bridge, and from the parking lot. The results using road runoff displayed that EPP was most efficient with ratio of 89% to treat SS and COD
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Bradley, Xuan Qi. "Analysis of Non-point Sources and Natural Attenuation Effect in the Acid Mine Drainage Affected Black Fork Sub-watershed, Perry County, Ohio." Ohio University / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1038836721.

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Books on the topic "Point source analysis"

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Arnold, Forest D. Analysis of pollutant discharges from West Coast point sources. Rockville, Md: National Oceanic and Atmospheric Administration, Strategic Assessment Branch, 1988.

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Golding, Steven. Spokane area point source PCB survey, May 2001. Olympia, Wash: Environmental Assessment Program, 2002.

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Golding, Steven. Spokane area point source PCB survey, May 2001. Olympia, Wash: Environmental Assessment Program, 2001.

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1931-, Young Robert A., and United States. Agricultural Research Service., eds. AGNPS, Agricultural Non-Point-Source Pollution Model: A watershed analysis tool. [Washington, D.C.?]: U.S. Dept. of Agriculture, Agricultural Research Service, 1987.

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Golding, Steven. Spokane River PCB and source survey, August 2000. Olympia, Wash: Environmental Assessment Program, 2001.

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Golding, Steven. Spokane River PCB and source survey, August 2000. Olympia, Wash: Environmental Assessment Program, 2001.

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Panuska, John C. Water quality modeling: Terrain analysis and the agricultural non-point source pollution (AGNPS) model. St. Paul, MN: Water Resources Research Center, University of Minnesota, 1991.

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Manglallan, Eduardo P. Water quality baseline study and non-point source pollution analysis on Waikele Stream, West Loch Estuary, Oahu, Hawaii. Springfield, Va: Available from National Technical Information Service, 1994.

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Taylor, Lisa A. Digital elevation models of Sand Point, Alaska: Procedures, data sources and analysis. Boulder, Colo: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center, 2008.

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Minobrnauki, Rossiyskoy. Finance and Financial analysis. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1242227.

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The textbook systematizes basic knowledge in the field of finance, financial analysis and financial management, presented in their direct relationship and significance from the point of view of evaluation, diagnosis, forecasting and monitoring of the continuity of the organization's activities. It includes seven chapters grouped into three sections. The first section is devoted to the theoretical foundations of the organization's financial management, stakeholders and sources of the organization's activities. The second section discusses the basics of financial analysis, providing knowledge of the main directions, information base and methods of financial analysis, as well as allowing them to be applied reasonably, calculate and evaluate analytical indicators, determine the impact of globalization processes, various macro-and microfactors on the financial condition of the organization. The third section contains the basics of financial management, providing an understanding of the essence of the financial mechanism of the organization and algorithms for justifying decisions in the field of financial management. It complies with the federal state educational standards of higher education of the latest generation and provides the formation of basic competencies in the field of finance, financial management and financial analysis. For bachelor's, specialist's and master's students studying in the field of Economics, the system of additional professional education, training centers for advanced training of auditors and other financial market specialists, as well as for individual preparation of applicants for qualification certification and passing qualification exams.
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Book chapters on the topic "Point source analysis"

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Hipel, Keith W., and A. Ian McLeod. "Intervention Analysis in Environmental Engineering." In Statistical Methods for the Assessment of Point Source Pollution, 85–101. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1960-0_6.

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Cullen, A. L. "Complex-Source-Point Theory and the Open Resonator." In Electromagnetic Modelling and Measurements for Analysis and Synthesis Problems, 89–102. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3232-9_6.

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Buccheri, R., C. M. Carollo, J. Linsley, and L. Scarsi. "Track Pattern Analysis for Study of Point-Source Air Showers." In Data Analysis in Astronomy III, 351–59. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4684-5646-2_34.

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Farewell, V. T. "Some Comments on Analysis Techniques for Censored Water Quality Data." In Statistical Methods for the Assessment of Point Source Pollution, 185–93. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1960-0_11.

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Poulton, Donald J. "Statistical Zonation of Sediment Samples Using Ratio Matching and Cluster Analysis." In Statistical Methods for the Assessment of Point Source Pollution, 279–304. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1960-0_18.

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Ferguson, Richard B., and Gary W. Hergert. "Sampling and spatial analysis techniques for quantifying soil map unit composition." In Assessment of Non‐Point Source Pollution in the Vadose Zone, 79–91. Washington, D. C.: American Geophysical Union, 1999. http://dx.doi.org/10.1029/gm108p0079.

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Aldrin, Magne, Eivind Damsleth, and Hans Viggo Sæbø. "Time Series Analysis of Unequally Spaced Observations - With Applications to Copper Contamination of the River Gaula in Central Norway." In Statistical Methods for the Assessment of Point Source Pollution, 127–43. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-1960-0_8.

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Chester, T. "A Statistical Analysis and Overview of the IRAS Point Source Catalog." In Light on Dark Matter, 3–22. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4672-9_1.

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Mödersheim, Sebastian, and Luca Viganò. "The Open-Source Fixed-Point Model Checker for Symbolic Analysis of Security Protocols." In Foundations of Security Analysis and Design V, 166–94. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03829-7_6.

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Aggarwal, Anu G., Vikas Dhaka, Nidhi Nijhawan, and Abhishek Tandon. "Reliability Growth Analysis for Multi-release Open Source Software Systems with Change Point." In System Performance and Management Analytics, 125–37. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7323-6_12.

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Conference papers on the topic "Point source analysis"

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Cox, J. Allen. "Point Source Location Sensitivity Analysis." In 30th Annual Technical Symposium, edited by Hideyoshi Nakamura. SPIE, 1986. http://dx.doi.org/10.1117/12.936535.

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Collmar, W. "COMPTEL time-averaged all-sky point source analysis." In Fifth compton symposium. AIP, 2000. http://dx.doi.org/10.1063/1.1303271.

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Deest, Gael, Tomofumi Yuki, Olivier Sentieys, and Steven Derrien. "Toward scalable source level accuracy analysis for floating-point to fixed-point conversion." In 2014 IEEE/ACM International Conference on Computer-Aided Design (ICCAD). IEEE, 2014. http://dx.doi.org/10.1109/iccad.2014.7001432.

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Yang, Fei, Qichang An, Hongchao Zhao, Peng Guo, Haibo Jiang, Haifeng Cao, and Jing Zhang. "Normalized point source sensitivity analysis for GSSM of TMT." In Large Mirrors and Telescopes, edited by Xiaoliang Ma, Bin Fan, Xiangang Luo, Adrian Russell, and Yongjian Wan. SPIE, 2019. http://dx.doi.org/10.1117/12.2506716.

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Hall, Siedah, Ivan V. Kotov, David Gopinath, Andi Barbour, Jiemin Li, Yanhong Gu, Karen Holland, et al. "X-ray analysis of the EMCCD point-source response." In X-ray, Optical, and Infrared Detectors for Astronomy IX, edited by Andrew D. Holland and James Beletic. SPIE, 2020. http://dx.doi.org/10.1117/12.2575012.

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Jiang, Zhiming, Xiaodong Zhang, Teng Zhang, Yi Zhang, and Yachun Wang. "Analysis of Nerve Excitation for TENS under Point Current Source." In 2020 10th Institute of Electrical and Electronics Engineers International Conference on Cyber Technology in Automation, Control, and Intelligent Systems (CYBER). IEEE, 2020. http://dx.doi.org/10.1109/cyber50695.2020.9279191.

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Huang, Ping, Rongrong Yin, and Yingjie Han. "Simulation and analysis of the dual point-source decoying ARM." In 2010 International Conference on Information and Automation (ICIA). IEEE, 2010. http://dx.doi.org/10.1109/icinfa.2010.5512073.

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Xiang, Dao P., and Matthys M. Botha. "Fast Point Source Shadowing Determination for Mesh-Based Physical Optics Analysis." In 2022 International Conference on Electromagnetics in Advanced Applications (ICEAA). IEEE, 2022. http://dx.doi.org/10.1109/iceaa49419.2022.9899935.

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Byeon, Seongjoon, Bonjin Koo, and Jintak Choi. "Computational Fluid Dynamics Analysis on Filtration Effect of Non-Point Source." In Information Technology and Computer Science 2015. Science & Engineering Research Support soCiety, 2015. http://dx.doi.org/10.14257/astl.2015.99.51.

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Liu, Zijing, and Yuntao Guan. "Distribution Analysis for Non-Point Source Pollution Control Programs Using Multivariate Statistical Analysis Methods." In International Low Impact Development Conference China 2016. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784481042.015.

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Reports on the topic "Point source analysis"

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Sinclair, Samantha, and Sandra LeGrand. Reproducibility assessment and uncertainty quantification in subjective dust source mapping. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41523.

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Accurate dust-source characterizations are critical for effectively modeling dust storms. A previous study developed an approach to manually map dust plume-head point sources in a geographic information system (GIS) framework using Moderate Resolution Imaging Spectroradiometer (MODIS) imagery processed through dust-enhancement algorithms. With this technique, the location of a dust source is digitized and recorded if an analyst observes an unobscured plume head in the imagery. Because airborne dust must be sufficiently elevated for overland dust-enhancement algorithms to work, this technique may include up to 10 km in digitized dust-source location error due to downwind advection. However, the potential for error in this method due to analyst subjectivity has never been formally quantified. In this study, we evaluate a version of the methodology adapted to better enable reproducibility assessments amongst multiple analysts to determine the role of analyst subjectivity on recorded dust source location error. Four analysts individually mapped dust plumes in Southwest Asia and Northwest Africa using five years of MODIS imagery collected from 15 May to 31 August. A plume-source location is considered reproducible if the maximum distance between the analyst point-source markers for a single plume is ≤10 km. Results suggest analyst marker placement is reproducible; however, additional analyst subjectivity-induced error (7 km determined in this study) should be considered to fully characterize locational uncertainty. Additionally, most of the identified plume heads (> 90%) were not marked by all participating analysts, which indicates dust source maps generated using this technique may differ substantially between users.
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Sinclair, Samantha, and Sandra LeGrand. Reproducibility assessment and uncertainty quantification in subjective dust source mapping. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41542.

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Accurate dust-source characterizations are critical for effectively modeling dust storms. A previous study developed an approach to manually map dust plume-head point sources in a geographic information system (GIS) framework using Moderate Resolution Imaging Spectroradiometer (MODIS) imagery processed through dust-enhancement algorithms. With this technique, the location of a dust source is digitized and recorded if an analyst observes an unobscured plume head in the imagery. Because airborne dust must be sufficiently elevated for overland dust-enhancement algorithms to work, this technique may include up to 10 km in digitized dust-source location error due to downwind advection. However, the potential for error in this method due to analyst subjectivity has never been formally quantified. In this study, we evaluate a version of the methodology adapted to better enable reproducibility assessments amongst multiple analysts to determine the role of analyst subjectivity on recorded dust source location error. Four analysts individually mapped dust plumes in Southwest Asia and Northwest Africa using five years of MODIS imagery collected from 15 May to 31 August. A plume-source location is considered reproducible if the maximum distance between the analyst point-source markers for a single plume is ≤10 km. Results suggest analyst marker placement is reproducible; however, additional analyst subjectivity-induced error (7 km determined in this study) should be considered to fully characterize locational uncertainty. Additionally, most of the identified plume heads (> 90%) were not marked by all participating analysts, which indicates dust source maps generated using this technique may differ substantially between users.
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Kleinmann, Susan G. Observational Study and Analysis of Point Sources Found by the Infrared Astronomy Satellite. Fort Belvoir, VA: Defense Technical Information Center, April 1991. http://dx.doi.org/10.21236/ada248416.

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4

Kholoshyn, Ihor V., Olga V. Bondarenko, Olena V. Hanchuk, and Iryna M. Varfolomyeyeva. Cloud technologies as a tool of creating Earth Remote Sensing educational resources. [б. в.], July 2020. http://dx.doi.org/10.31812/123456789/3885.

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This article is dedicated to the Earth Remote Sensing (ERS), which the authors believe is a great way to teach geography and allows forming an idea of the actual geographic features and phenomena. One of the major problems that now constrains the active introduction of remote sensing data in the educational process is the low availability of training aerospace pictures, which meet didactic requirements. The article analyzes the main sources of ERS as a basis for educational resources formation with aerospace images: paper, various individual sources (personal stations receiving satellite information, drones, balloons, kites and balls) and Internet sources (mainstream sites, sites of scientific-technical organizations and distributors, interactive Internet geoservices, cloud platforms of geospatial analysis). The authors point out that their geospatial analysis platforms (Google Earth Engine, Land Viewer, EOS Platform, etc.), due to their unique features, are the basis for the creation of information thematic databases of ERS. The article presents an example of such a database, covering more than 800 aerospace images and dynamic models, which are combined according to such didactic principles as high information load and clarity.
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Samji, Salimah, and Mansi Kapoor. Funda Wande through the Lens of PDIA: Showcasing a Flexible and Iterative Learning Approach to Improving Educational Outcomes. Research on Improving Systems of Education (RISE), January 2022. http://dx.doi.org/10.35489/bsg-rise-ri_2022/036.

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Funda Wande has adopted a ‘learning by doing’ strategy that is similar to the Problem Driven Iterative Adaptation (PDIA) approach to solving complex problems. PDIA is a high-impact process of innovation that helps organisations develop the capability to solve complex problems while they are solving such problems. It is a step-by-step framework that helps break down problems into their root causes, identify entry points, search for possible solutions, take action, reflect upon what is learned, adapt, and then act again. Its dynamic process and tight feedback loops enable teams to find and fit solutions to the local context. This case provides a narrative of the Funda Wande story with boxes illustrating how PDIA principles and tools like problem construction, deconstruction, entry point analysis, iteration, and building authorisation would have been applied in practice. The sources of this case include a literature review of education in South Africa, related research documents, and conversations with staff at Funda Wande.
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Warrick, Arthur, Uri Shani, Dani Or, and Muluneh Yitayew. In situ Evaluation of Unsaturated Hydraulic Properties Using Subsurface Points. United States Department of Agriculture, October 1999. http://dx.doi.org/10.32747/1999.7570566.bard.

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The primary information for accurately predicting water and solute movement and their impact on water quality is the characterization of soil hydraulic properties. This project was designed to develop methods for rapid and reliable estimates of unsaturated hydraulic properties of the soil. Particularly, in situ methodology is put forth, based on subsurface point sources. Devices were designed to allow introduction of water in subsurface settings at constant negative heads. The ability to operate at a negative head allows a direct method of finding unsaturated soil properties and a mechanism for eliminating extremely rapid preferential flow from the slow matrix flow. The project included field, laboratory and modeling components. By coupling the measurements and the modeling together, a wider range of designs can be examined, while at the same time realistic performance is assured. The developed methodology greatly expands the possibilities for evaluating hydraulic properties in place, especially for measurements in undisturbed soil within plant rooting zones. The objectives of the project were (i) To develop methods for obtaining rapid and reliable estimates of unsaturated hydraulic properties in situ, based on water distribution from subsurface point sources. These can be operated with a constant flow or at a constant head; (ii) To develop methods for distinguishing between matrix and preferential flow using cavities/permeameters under tension; (iii) To evaluate auxiliary measurements such as soil water content or tensions near the operating cavities to improve reliability of results; and (iv: To develop numerical and analytical models for obtaining soil hydraulic properties based on measurements from buried-cavity sources and the auxiliary measurements. The project began in July 1995 and was terminated in November 1998. All of the objectives were pursued. Three new subsurface point sources were designed and tested and two old types were also used. Two of the three new designs used a nylon cloth membrane (30 mm) arranged in a cylindrical geometry and operating at a negative water pressure (tension). A separate bladder arrangement allowed inflation under a positive pressure to maintain contact between the membrane and the soil cavity. The third new design used porous stainless steel (0.5 and 5 mm) arranged in six segments, each with its own water inlet, assembled to form a cylindrical supply surface when inflated in a borehole. The "old" types included an "off-the-shelf" porous cup as well as measurements from a subsurface drip emitter in a small subsurface cavity. Reasonable measurements were made with all systems. Sustained use of the cloth membrane devices were difficult because of leaks and plugging problems. All of the devices require careful consideration to assure contact with the soil system. Steady flow was established which simplified the analysis (except for the drip emitter which used a transient analysis).
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Zhuo, Guifeng, Hengwang Yu, Ran Liao, Xuexia Zheng, Dongmin Liu, Libing Mei, and Guiling Wu. Auricular point pressing therapy for obstructive sleep apnea hypoventilation syndrome: A protocol for systematic review and meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, May 2022. http://dx.doi.org/10.37766/inplasy2022.5.0015.

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Review question / Objective: Patients with obstructive sleep apnea hypoventilation syndrome (OSAHS) suffer from repeated hypoxemia, hypercapnia, and sleep structure disorders at night, leading to daytime lethargy and complications of heart, brain, lung, and blood vessel damage, which seriously affect their quality of life and life span. Clinical studies have shown that auricular point pressing therapy has an excellent therapeutic effect on OSAHS, and has the potential to be a complementary and alternative therapy for patients with OSAHS. Currently, systematic reviews and meta-analyses evaluating the efficacy and safety of electroacupuncture for the treatment of OSAHS are lacking. This study aimed to address this deficiency. Information sources: RCTs of auricular point pressing therapy in the treatment of OSAHS were searched in the Web of Science, PubMed, Cochrane Library, Embase, Allied and Complementary Medicine Database (AMED), China Science and Technology Journal Database (VIP), China National Knowledge Infrastructure (CNKI), and Wan-Fang Database. The retrieval time is from database construction to the present.
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Warrick, Arthur W., Gideon Oron, Mary M. Poulton, Rony Wallach, and Alex Furman. Multi-Dimensional Infiltration and Distribution of Water of Different Qualities and Solutes Related Through Artificial Neural Networks. United States Department of Agriculture, January 2009. http://dx.doi.org/10.32747/2009.7695865.bard.

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The project exploits the use of Artificial Neural Networks (ANN) to describe infiltration, water, and solute distribution in the soil during irrigation. It provides a method of simulating water and solute movement in the subsurface which, in principle, is different and has some advantages over the more common approach of numerical modeling of flow and transport equations. The five objectives were (i) Numerically develop a database for the prediction of water and solute distribution for irrigation; (ii) Develop predictive models using ANN; (iii) Develop an experimental (laboratory) database of water distribution with time; within a transparent flow cell by high resolution CCD video camera; (iv) Conduct field studies to provide basic data for developing and testing the ANN; and (v) Investigate the inclusion of water quality [salinity and organic matter (OM)] in an ANN model used for predicting infiltration and subsurface water distribution. A major accomplishment was the successful use of Moment Analysis (MA) to characterize “plumes of water” applied by various types of irrigation (including drip and gravity sources). The general idea is to describe the subsurface water patterns statistically in terms of only a few (often 3) parameters which can then be predicted by the ANN. It was shown that ellipses (in two dimensions) or ellipsoids (in three dimensions) can be depicted about the center of the plume. Any fraction of water added can be related to a ‘‘probability’’ curve relating the size of the ellipse (or ellipsoid) that contains that amount of water. The initial test of an ANN to predict the moments (and hence the water plume) was with numerically generated data for infiltration from surface and subsurface drip line and point sources in three contrasting soils. The underlying dataset consisted of 1,684,500 vectors (5 soils×5 discharge rates×3 initial conditions×1,123 nodes×20 print times) where each vector had eleven elements consisting of initial water content, hydraulic properties of the soil, flow rate, time and space coordinates. The output is an estimate of subsurface water distribution for essentially any soil property, initial condition or flow rate from a drip source. Following the formal development of the ANN, we have prepared a “user-friendly” version in a spreadsheet environment (in “Excel”). The input data are selected from appropriate values and the output is instantaneous resulting in a picture of the resulting water plume. The MA has also proven valuable, on its own merit, in the description of the flow in soil under laboratory conditions for both wettable and repellant soils. This includes non-Darcian flow examples and redistribution and well as infiltration. Field experiments were conducted in different agricultural fields and various water qualities in Israel. The obtained results will be the basis for the further ANN models development. Regions of high repellence were identified primarily under the canopy of various orchard crops, including citrus and persimmons. Also, increasing OM in the applied water lead to greater repellency. Major scientific implications are that the ANN offers an alternative to conventional flow and transport modeling and that MA is a powerful technique for describing the subsurface water distributions for normal (wettable) and repellant soil. Implications of the field measurements point to the special role of OM in affecting wettability, both from the irrigation water and from soil accumulation below canopies. Implications for agriculture are that a modified approach for drip system design should be adopted for open area crops and orchards, and taking into account the OM components both in the soil and in the applied waters.
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9

Avis, William. Ukraine Crisis and Climate and Environment Commitments. Institute of Development Studies, March 2022. http://dx.doi.org/10.19088/k4d.2022.047.

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This rapid literature review collates available literature on the impact of the Ukraine crisis on international climate and environment commitments and considerations. The review draws on a range of sources predominantly blogs, opinion pieces and snap analyses. Given the nature of the conflict, its myriad impacts and uncertain end point, this report should be reviewed with a degree of caution. As the analysis draws heavily on opinion pieces and snap analyses, these will likely be outdated relatively quickly, and some assumptions shown to be flawed. Similarly, as events evolve, some analysis will become redundant. The impact of Russia’s invasion of Ukraine on international climate and environment commitments and considerations will be complex and multifaceted and likely to evolve over time, key themes emerging in this report are as follows: Strategic cooperation or competition of states towards climate-related goals has long been anticipated to drive global political developments in the coming century. The nature of these volatile relationships has a determining factor on the scale, speed and final form of the transition to net zero, impacting politically, environmentally and economically. Climate change is not an isolated area of strategic concern; rather it should be understood as a pervasive condition with implications for most other areas of interstate competition and cooperation, from global trade to regulatory standards. In this sense, actors have climate-related incentives and imperatives to either cooperate or compete according to specific issue areas such as the economy or national security.
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Butler, John M. Bitemark Analysis. Gaithersburg, MD: National Institute of Standards and Technology, 2022. http://dx.doi.org/10.6028/nist.ir.8352-draft.

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This report summarizes a review of the scientific foundations of bitemark analysis conducted by the National Institute of Standards and Technology (NIST). Bitemark analysis typically involves examining patterned injuries left on a victim or object at a crime scene, identifying those injuries as bitemarks, and comparing those marks with dental impressions from a person of interest. This review specifically focuses on pattern injuries found on human skin. Over 400 sources were considered via literature searches and input from previous efforts by the National Institute of Justice Forensic Technology Center of Excellence. Our NIST review also utilized input from an October 2019 Bitemark Thinkshop organized by the Center for Statistics and Applications in Forensic Evidence (CSAFE) where experts and stakeholders associated with bitemark analysis were convened to discuss key issues. Based on this input, our study found a lack of support for three key premises of the field: 1) human dentition is unique at the individual level, 2) this uniqueness can be accurately transferred to human skin, and 3) identifying characteristics can be accurately captured and interpreted by analysis techniques. Furthermore, our review noted a lack of consensus among practitioners on the interpretation of bitemark evidence as well as thoughts on how to move the field forward. If the field seeks to advance, the key takeaways provided in this review are starting points for areas needing improvement, not an exhaustive list of specific shortcomings.
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