IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Astronomy - Stat eof the Art - CosmologyChris Impey
Astronomy - State of the Art is a course covering the hottest topics in astronomy. In this section, the properties of the whole universe are covered, including Hubble expansion, the age and size, the big bang, and dark energy.
I used this Powerpoint as an example for a presentation I did on using Dukane projectors to teach STEM, and thought it might be useful to others.
Bill McIntosh
SchoolVision Inc ( my consulting company)
Authorized Dukane/Convey Consultant
Phone :843-442-8888
Email :WKMcIntosh@Comcast.net
Twitter : @OtisTMcIntosh
SchoolVision Website on Facebook: https://www.facebook.com/WKMIII
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
Astronomy - Stat eof the Art - CosmologyChris Impey
Astronomy - State of the Art is a course covering the hottest topics in astronomy. In this section, the properties of the whole universe are covered, including Hubble expansion, the age and size, the big bang, and dark energy.
I used this Powerpoint as an example for a presentation I did on using Dukane projectors to teach STEM, and thought it might be useful to others.
Bill McIntosh
SchoolVision Inc ( my consulting company)
Authorized Dukane/Convey Consultant
Phone :843-442-8888
Email :WKMcIntosh@Comcast.net
Twitter : @OtisTMcIntosh
SchoolVision Website on Facebook: https://www.facebook.com/WKMIII
RV 2014: Great Expectations for Large-Scale TOD by James KennedyRail~Volution
Great Expectations for Large-Scale TOD AICP CM 1.5
What kinds of expectations should you have when initiating a large-scale TOD project? Hear from three different perspectives -- a private developer, a transit agency and a redevelopment authority -- about how TOD projects evolve, from concept to implementation. Learn about the pitfalls, as well as the keys to success. Real project highlights, case studies and lessons that will help you make your large-scale TOD project a success.
Moderator: William C Van Meter, Assistant General Manager of Planning, Regional Transportation District, Denver, Colorado
James Kennedy, Redevelopment Director (retired), Walnut Creek, California
Cynthia A Parker, President and Chief Executive Officer, BRIDGE Housing Corporation, San Francisco, California
Bill Sirois, Senior Manager, TOD and Planning Coordination, FasTracks Team, Regional Transportation District, Denver, Colorado
Apreciados Amigos de la Sociedad Julio Garavito para el Estudio de la Astronomía y de las Ciencias Espaciales en general. Reciban un cordial saludo. El sábado 8 de Junio de 2019 desde las 11:00 Am hasta las 1:00 PM. se tuvo la reunión de la Sociedad Julio Garavito en el Auditorio del Planetario de Medellín "Jesús Emilio Ramírez González"-Antioquia-Colombia con la Charla: EINSTEIN’S THEORY OF GENERAL RELATIVITY GRAVITATIONAL LENSING PHENOMENON SOBRAL (Brazil) – ISLA PRINCIPE OBSERVATION SITES OF TOTAL SOLAR ECLIPSE MAY 29, 1919" Por: Herman J. Mosquera Cuesta (PhD Astrophysics). Resumen: In this talk we will review the foundational physics arguments for the occurrence of the phenomenon of gravitational lensing as predicted by Einstein’s general theory of relativity (GTR). A short review of the Einstein’s equations formulated by 1915 and the successful observational confirmations of the theory, in particular the August 2017 spectacular direct detection of the spacetime curvature waves, i.e. gravitational waves, from merging of a neutron star binary, as seeing by LIGO and VIRGO gravitational-wave observatories. Some comments on Einstein’s pathway to predict such phenomenon will be offered, and the specific expression to short-hand computing the angular deviation of background stars around the Sun field of view, will be given. In the offing, we shall briefly digest on the overall implications of such an achievement on May 29, 1919 for our understanding of the universe we live in. https://www.slideshare.net/SociedadJu... Nota: Estas charlas promovidas por la Sociedad Julio Garavito son de entrada libre sin costo alguno. La Sociedad Julio Garavito agradece a los Directivos del Parque Explora por permitirle realizar sus reuniones quincenales que han sido tradicionales por más de 44 años en un lugar que se ha convertido en un referente de Ciencia, Ingeniería, Tecnología e Industria AeroEspacial en la Ciudad de Medellín. Por la atención prestada, muchas gracias. Sinceramente: Campo Elías Roldán. Director Sociedad Julio Garavito para el Estudio de la Astronomía Medellín-Antioquia COLOMBIA. sociedadjuliogaravito@gmail.com campoelias.roldan@gmail.com 3046633269
A presentation on the first cosmic explosions and how the Universe started to make heavy elements, by Monash University's Professor Alexander Heger from the Faculty of Science, School of Mathematical Science.
Multi dimensional simulations_of_the_expanding_supernova_remnant_of_sn1987_aSérgio Sacani
Artigo descreve as mais novas simulações computacionais realizadas para se poder entender o funcionamento e a origem da remanescente de supernova SN1987A.
El Británico Roger Penrose por sus desarrollos teóricos sobre agujeros negros. La Estadounidense Andrea Ghez y el Alemán Reinhald Genzel por el hallazgo de un objeto súper masivo y compacto en el centro de nuestra galaxia.
Por:
Herman J. Mosquera Cuesta
Ingeniero Mecánico UdeA.
PhD en Astrofísica.
Tres investigadores han sido galardonados con el premio Nobel de Física de este año por sus descubrimientos sobre estos fenómenos supermasivos. Roger Penrose por demostrar su existencia según la teoría de la relatividad general y Reinhard Genzel y Andrea Ghez por demostrar que los agujeros negros son capaces de interferir en las órbitas de estrellas cercanas.
Los astrónomos Roger Penrose, Reinhard Genzel y Andrea Ghez se han hecho con el premio Nobel de Física de 2020. El primero de los científicos ha obtenido la mitad del galardón por la demostración fáctica de la existencia de los agujeros negros, siguiendo los preceptos de la teoría de la relatividad de Einstein. Los otros dos investigadores han sido distinguidos por el descubrimiento de un objeto supermasivo en el centro de la Vía Láctea, a unos 26.000 años luz de nuestro planeta.
Reinhard Genzel y Andrea Ghez descubrieron un agujero negro en el centro de la Vía Láctea comprobando la velocidad de las órbitas de sus estrellas circundantes.
“Los descubrimientos de los galardonados de este año han abierto nuevos caminos en el estudio de objetos compactos y supermasivos. Pero estos objetos exóticos todavía plantean muchas preguntas que piden respuestas y plantean nuevos retos de investigación en el futuro, no solo sobre la estructura interna de estos objetos masivos, sino también sobre cómo usar la teoría de la relatividad general en condiciones extremas”, ha declarado David Haviland, presidente del Comité Nobel de Física.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Honest Reviews of Tim Han LMA Course Program.pptxtimhan337
Personal development courses are widely available today, with each one promising life-changing outcomes. Tim Han’s Life Mastery Achievers (LMA) Course has drawn a lot of interest. In addition to offering my frank assessment of Success Insider’s LMA Course, this piece examines the course’s effects via a variety of Tim Han LMA course reviews and Success Insider comments.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
N.34 michel great-influence-of paolo-farinella-in-studies-of
1. Great influence of Paolo Farinella in studies of
dynamics of Near-Earth asteroids and
collisional processes
Vth Catastrophic
Disruption
Workshop,
Oregon, 1998
Pisa, 06/16/2010
2. • Amors: a>1 AU
1.017<q<1.3 AU
• Apollos: a>1 AU
q<1.017 AU
• Atens: a<1 AU
Q>0.987 AU
• IEOs: a<1 AU
Q<0.987
1000 Objects
with D>1 km
3.
4. Years of studies
have shown that
asteroids from
different regions of
the Main Belt (MB)
are injected into
resonances which
transport them on
Earth-crossing orbits
But once NEOs, what are the main dynamical mechanisms
at work? Are there only planetary approaches, as
commonly assumed at that time?
5. • Eros: target of NEAR Hayabusa
(NASA/APL) cambe back
on June 13th, one day
before Paolo’s meeting:
• Nereus: initial target of Re-entry capsule in the
Muses-C (Hayabusa,JAXA) Woomera desert
(Australia)
6. From Michel&Thomas 1996, AA 307
Semimajor axis close to 1 AU or 0.72 AU
Low inclination < 20°
ω librates around 0° or 180°
17. Experiments using the two-stage light gas gun of ISAS in Japan
Setoh, Nakamura, Michel et al. 2010, Icarus 205
Prof. A. Fujiwara: leader of the Science Team of the mission Hayabusa,
Pioneer of impact experiments, and good colleague of Paolo!
18. Comparison with impact experiments on basalt
→ SPH simulations using 3.5×106 particles
Nakamura & Fujiwara 93
Benz & Asphaug 1994!
High-res. Runs by M. Jutzi !
largest fragment as a function of impact angle
dust removed
19. Example: a projectile
hits a 100 km-size
body at 5 km/s (average
impact velocity in the MB)
From Jutzi, Michel, Benz,
Richardson 2010.
Red zones are damaged
20. Gravitational phase:
once fragments have been generated they Michel P. et al. 2001. 2002, 2003, 2004
reaccumulate due to their mutual attractions Michel P. 2006, Lecture Notes Physics
Michel P. 2009, Lecture Notes in Physics
Snapshots centered on the largest fragment; time t=0 to 84 minutes
Increase of realism of simulations: model of rigid body allows
Reproducingthe shapes of aggregates formed during a collision
(Richardson, Michel et al. 2009, PSS 57): Itokawa
21. Forming asteroid families:
Testing the gravity regime
P. Michel, W. Benz, P. Tanga and D. Richardson, 2001
1) the parent body is totally disrupted by a catastrophic impact
→ SPH simulations of impact
2) expanding debris are re-accumulating to form family members
time
→ N-body simulations of re-accumulation
Size distribution of an asteroid
family: actual and simulated members
22. Internal structure of small bodies:
Characterisation and role
Our simulations of asteroid disruptions reproduced for
the first time asteroid families and suggest that objects
> km are gravitational agregates (rubble piles)
Michel et al., Science 294 (2001)
Impact energies and disruption outcomes
greatly depend on the initial internal
structure of the impacted body
Michel et al., Nature 421 (2003)
23.
24.
25.
26. Jutzi, Michel, Hiraoka, Nakamura, Benz, 2009, Icarus 201
Différent kinds of porosity
Impact speed: 3 km/s
Winter 2010 with A. Nakamura, a good colleague of Paolo
27. Jutzi, Michel, Hiraoka, Nakamura, Benz, 2009, Icarus 201
Experiment! T = 1.5 ms! Simulation!
First validations of a model of fragmentation of porous body
28. Experiment! T = 8 ms! Simulation!
First application at large scale: formation of
the crater on the asteroid Stein (Rosetta image)
Jutzi, Michel, Benz 2010. A&A 509, L2
29. Asphaug et al.
2003
Threshold for "
which the "
largest "
fragment has "
50% of the " This parameter still
mass of the " needs to be better
original body" estimated for monolithic
targets, and
was not estimated for
(thick line with dots:" rubble piles and
Benz & Asphaug " porous bodies
1999)"
Impact energy threshold for disruption of a solid target vs. Target’s radius
34. Walsh K., Richardson D.C., Michel, P., Nature 454
Spin-up due to YORP, a variant of the re-discovered Yarkowsky effect by
Paolo
Final Snapshot of
a simulation of
spin-up of a km-size
aggregate resulting
in a binary with similar
properties as observed ones 1999 KW4
(Radar Image
Ostro et al.)
Particles initially at the surface in orange, those initially inside in blank
(the pole of the primary should be less weathered than that at the equator)
35.
36. Thank you!!
And thank you, Paolo,
for accompanying
my researches every day!!
Porous versus non-porous!!