179 research outputs found
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Series 4: Born-digital
No full textCompiled index of articles published in issues of The Engine Collectors' Journal and The Model Engine Collector with listings by subject, title, author, engine manufacturers, and plane models
Series 4: Born-digital
No full textCompiled index of articles published in issues of The Engine Collectors' Journal and The Model Engine Collector with listings by subject, title, author, engine manufacturers, and plane models
Lothar Bickel : (8. Mai 1902 - 23. April 1951).
No full textThe author describes his friendship with Lothar "Elieser" Bickel in the Zionist youth group "Hashomer Hazair", where he met him in 1919 in Czernowitz, Bukowina. Discussion of Jewish-national and social problems and studies of Hebrew. Elieser's growing interest in philosophical and socialist themes. His brother Schlomoh Bickel was a leader of the worker's movement Poale Zion. Influence of the ethic seminary by Dr. Kettner and criticism on Zionist ideals. Elieser Bickel became acquainted with the philosopher Constantin Brunner and grew to become one of his most talented students. In 1922 Elieser enrolled at the Medical School in Bucharest, where he experienced virulent anti-Semitism at the university. Disintegration of Dr. Kettner's seminary in Czernowitz. Circle around Elieser Bickel who promoted the growing importance of Brunner's philosophy. In 1926 Elieser graduated. After completing his military service he decided to move to Berlin in 1927. Czernowitz philosophy circle in Berlin and friendship with Constantin Brunner. Lectures and studies of philosophy. Work as a physician in Berlin and Prenzlau. In 1931 journey to Spain. After Hitler's takeover in 1933 he moved back to Bucharest, where Lothar Bickel became one of the most renowned gynecologists. He continued his philosophic interests and specialized in the ethic of Spinoza and Kant. Death of Constantin Brunner in 1937. Acquaintance with Maedi Moscovici. They married in 1939 in Czernowitz. Military service and growing danger of approaching Germans. Precarious situation of the Jewish population. Armistice and continuation of his philosophic work. In 1950 Lothar Bickel emigrated to Canada. He died in Toronto in 1951.Lothar (Elieser) Bickel was born 1902 in Kisselew, a village in Northern Bukowina. He grew up in an orthodox house. His father was the owner of a small pub. Elieser was sent to his pious grandparents in Kolomea, where he received a pronounced Jewish education. He was sent to the high school (Gymnasium) and excelled as a student. After World War I and the collapse of the Austro-Hungarian Monarchy Kisselow became part of Romania. In 1918 Elieser continued his schooling at the Jewish Gymnasium in Czernowitz, where he was part of the Zionist youth group Hashomer Hazair. Elieser became a radical assimilationist under the influence of the philosopher Constantin Brunner. He studied medicine in Bucharest and settled as a physician in Berlin and Prenzlau. In 1933 Lothar Bickel returned to Bucharest. He emigrated to Canada in 1950, where he died one year later. Bickel wrote four philosophical books, which were published posthumously.Ball, SchlomohBrunner, LotteKasch, MagdalenaSemmel, KarlSonntag, LeoSternschuss, Mosche (Sterian)Stier, GabrielBucharestBerlinKolomeaAssimilationEducation, Jewish, 1871-1918Education, higher, 1918-1933FriendshipLiteratureMedicineMilitary servicePoale ZionYouth grou
Impacts drive lunar rockfalls over billions of years
No full textPast exploration missions have revealed that the lunar topography is eroded through mass wasting processes such as rockfalls and other types of landslides, similar to Earth. We have analyzed an archive of more than 2 million high-resolution images using an AI and big data-driven approach and created the first global map of 136.610 lunar rockfall events. Using this map, we show that mass wasting is primarily driven by impacts and impact-induced fracture networks. We further identify a large number of currently unknown rockfall clusters, potentially revealing regions of recent seismic activity. Our observations show that the oldest, pre-Nectarian topography still hosts rockfalls, indicating that its erosion has been active throughout the late Copernican age and likely continues today. Our findings have important implications for the estimation of the Moon’s erosional state and other airless bodies as well as for the understanding of the topographic evolution of planetary surfaces in general
Artizein Journal Launch Part 1
No full textPart 1 of 2 Journal Launches, Vol. V, Iss I
75 minutes of author-artists from the issue presenting on their articles.
Co-editors & Hosts: Dr. Barbara Bickel & Dr. Darlene St. GeorgesPresenting Author-Artists: Being With Letting Go. A found poem in honour of Carl Leggo-Contemplative Arts Collective - Susan Walsh, Robyn Trail, Ashwani Kumar, Jennifer Markides, Celeste Snowber, Barbara, Yoriko Gillard, Arianna Cuculiza-Brunke, & Janice Valdez Paying it Forward: A gift economy of poetry and visual art images-Susan Gerofsky and Dan Barney Walking and Dwelling: Creating an atelier in nature-Misty aka Kwan Dae ChungA Contemplative and Artful Mettisage of Inquiry and Response.-Susan Walsh, Robin Trail, Nik Phillips, Jackie Mitchell, Medwyn McConachy, Wendalyn Bartley, Barbara Bickel Co-Creation with Youth: Teaching artistry and art outreach programs-Hallie Morison An Unlikely Correspondence: GPS and body in place-Patti PenteTo purchase a hard copy: https://www.magcloud.com/browse/search?m=a&q=artizein
Recorded on Zoom by co-host the University of LethbridgeEdited by Barbara Bicke
Discovery of a Dust Sorting Process on Boulders Near the Reiner Gamma Swirl on the Moon
No full textIn a database of lunar fractured boulders (Rüsch & Bickel, 2023, https://doi.org/10.3847/psj/acd1ef), we found boulders with reflectance features dissimilar to previously known morphologies. We performed a photo-geologic investigation and determined that the features correspond to a dust mantling on top of boulders with a unique photometric behavior. We next performed a photometric model inversion on the dust mantling using Bayesian inference sampling. Modeling indicates that the dust photometric anomaly is most likely due to a reduced opposition effect, whereas the single scattering albedo is not significantly different from that of the nearby background regolith. This implies a different structure of the dust mantling relative to the normal regolith. We identified and discussed several potential processes to explain the development of such soil. None of these mechanisms can entirely explain the multitude of observational constraints unless evoking anomalous boulder properties. Further study of these boulders can shed light on the workings of a natural dust sorting process potentially involving dust dynamics, a magnetic field, and electrostatic dust transport. The presence of these boulders appears to be limited to the Reiner K crater near the Reiner Gamma magnetic and photometric anomaly. This close spatial relationship further highlights that poorly understood processes occur in this specific region of the Moon
Thermophysical Change Detection on the Moon with the Lunar Reconnaissance Orbiter Diviner sensor
No full textThe Moon is an archive of the history of the Solar System, as it has recorded and preserved physical events that have occurred over billions of years. NASA’s Lunar Reconnaissance Orbiter (LRO) has been studying the lunar surface for more than 13 years, and its datasets contain valuable information about the evolution of the Moon. However, the vast amount and heterogeneous nature of data collected by LRO make the extraction of scientific insights very challenging - in the past most analyses relied on human review. Here, we present NEPHTHYS, an automated solution for discovering thermophysical changes on the surface using one of LRO’s largest datasets: the thermal data collected by its Diviner instrument. Specifically, NEPHTHYS is able to perform systematic, efficient, and large-scale change detection of present-day impact craters on the surface. Further work could enable more comprehensive studies of lunar surface impact flux rates and surface evolution rates, providing critical new information for future missions
LineaMapper: A deep learning-powered tool for mapping linear surface features on Europa
No full textAs discontinuities of the smooth icy surface, linear surface features might be directly or indirectly linked to Europa’s subsurface ocean. Mapping and categorising Europa’s lineaments is a means of retrieving information that could be linked to their formation history. As of today, planetary mapping is mainly conducted manually, which is tedious and subject to human bias once data sets become large. Mapping is further complicated by the heterogeneous quality and coverage of the available image data.
Here, we train LineaMapper, a convolutional neural network (Mask R-CNN), to conduct instance segmentation of the four main units of linear surface features on Europa: bands, double ridges, ridge complexes and undifferentiated lineae. LineaMapper is trained on the basis of 15 mosaics from the Galileo solid-state imager data, yielding 930 training tiles. With LineaMapper, we provide a new method that facilitates detailed mapping of lineaments in Galileo images. LineaMapper could be applied to data to be returned by the Europa Imaging System (EIS) onboard the Europa Clipper mission. We validate LineaMapper v1.0 on an independent test set. On this test set, LineaMapper shows an overall higher precision than recall. In other words, there are more non-detections of actual lineaments than there are false detections of lineaments. The model shows the most correct predictions for double ridges (highest precision), while the most complete detections happen for ridge complexes (highest recall), compared with the ground truth. In some cases, LineaMapper preserves the cross-cutting relationships. The biggest strength of LineaMapper lies in its speed and tunable output. In the future, LineaMapper can be retrained, fine tuned and applied to similar looking features, for example wrinkle ridges on Venus, ridges on other planets and moons or even dust devil tracks on Mars
Automated Discovery of Anomalous Features in Ultralarge Planetary Remote-Sensing Datasets Using Variational Autoencoders
No full textThe NASA Lunar Reconnaissance Orbiter (LRO) has returned petabytes of lunar high spatial resolution surface imagery over the past decade, impractical for humans to fully review manually. Here, we develop an automated method using a deep generative visual model that rapidly retrieves scientifically interesting examples of LRO surface imagery representing the first planetary image anomaly detector. We give quantitative experimental evidence that our method preferentially retrieves anomalous samples such as notable geological features and known human landing and spacecraft crash sites. Our method addresses a major capability gap in planetary science and presents a novel way to unlock insights hidden in ever-increasing remote-sensing data archives, with numerous applications to other science domains
The hermetic logos : reading the "Corpus Hermeticum" as a reflection of Graeco-Egyptian mentality
No full textThis study analyses Hermetic literature and focuses on the seventeen treatises of the so-called Corpus Hermeticum. It takes as its starting point the assumption that what are nowadays known as the Philosophical Hermetica emerged as a product of a Graeco-Egyptian process of self-perception. As will be demonstrated, Hermetic literature helps our understanding of how reformulations of symbolic universes led to a specific Graeco-Egyptian mentality. The Hermetica will be treated as the result of cross-cultural exchange between Greek and Egyptian symbolic universes. Hermetic literature will therefore be analysed according to its historical context, i.e. as part of a Greek-Egyptian dialogue
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