Entertainment news
King Charles celebrating Christmas at Sandringham with family – BBC
King Charles will attend the Christmas Day church service at Sandringham later for the first time as monarch.
The King and Camilla, the Queen Consort will be joined by the Prince and Princess of Wales on the royal estate in Norfolk.
They are expected to greet crowds gathering outside St Mary Magdalene Church following the service.
It will be the first time members of the Royal Family have spent Christmas at Sandringham House since 2019.
The royal standard is flying above the Sandringham House, marking a return to traditional royal festivities.
The Princess Royal and her family, and the Earl and Countess of Wessex and their children, are expected to join the King this Christmas.The Duke of York and his former wife, Sarah, Duchess of York, are also understood to be at the royal estate.
The only notable absentees are the Duke and Duchess of Sussex who last celebrated Christmas at Sandringham in 2018.
It will be the first year the King has hosted the Royal Family’s traditional gathering at the Norfolk estate since the death of his mother.
Queen Elizabeth II hosted 32 Christmases at Sandringham but was forced to cancel her annual festivities in 2020 and 2021 due to the Covid pandemic.
The King recorded his first Christmas broadcast on 13 December in St George’s Chapel at Windsor Castle,
where the late Queen was buried in September.
Crowds have gathered outside St Mary Magdalene Church on the Norfolk estate to see the royals as they walk back to the house following the service.Some have brought Christmas gifts for the Royal Family.
Members of the public had been advised to arrive early to get a glimpse of the royals.
Norfolk Police said usual security and traffic control measures would be in place.
Sandringham House has been the private home of British monarchs for more than 160 years.
Entertainment news
400-foot asteroid heading for Earth on Christmas Day; NASA clocks it at a scary 25028 kmph – HT Tech
NASA has warned about this giant 400-foot-wide potentially hazardous asteroid, which will come extremely close to Earth today.Should you worry? Know what NASA said.
Even as you are celebrating Christmas with your friends, family, and loved ones, there is an enormous asteroid rushing towards the Earth and is set to come dangerously close.NASA’s Jet Propulsion Laboratory informed on its portal that a potentially hazardous asteroid of a whopping 400-foot in diameter is rushing towards the Earth on December 25, that is today.
This asteroid dubbed 2022 TE14 will make an uncomfortably close approach to the Earth.
At its worst, a giant asteroid collision with Earth can have disastrous consequences, it can even end the whole of humankind on the planet.
Do you remember those tales about the disappearance of the dinosaurs from Earth? Yes, those tales are true! The reason is none other than the strike of the
asteroid 65 million years ago.However, to keep a constant eye on these monster rocks, NASA’s Planetary Defense Coordination Office monitors the skies and keeps a watch on various Near-Earth Objects (NEOs).If any NEO comes within 8 million kilometers of Earth, the organization red flags the NEO and issues an alert.So should you worry about this upcoming 400-foot-wide asteroid? Know what NASA said.
Danger of 400-foot wide asteroid
As per the asteroid data tracking page by NASA, Asteroid 2022 TE14 will fly past the Earth today December 25 at a horrifyingly close distance of just 2.67 million miles at a speed of 25028 kmph.NASA’s JPL has given the tag of potentially hazardous objects to all the
space rocks that approach within 4.6 million miles of Earth and have a size larger than about 150 meters.This is what makes this giant 400-foot asteroid a potential threat to Earth.
The asteroid 2022 TE14 was first discovered on September 22, 2022, which belongs to the Apollo group.
Sky.org said that this asteroid makes one orbit around the Sun in 932 days.After this, the next expected close approach of this giant space rock is expected on January 08, 2074.
However, you should not worry as there are several Earth and Sky-based technologies like telescopes, satellites, and more deployed by NASA in space.NASA keeps a constant eye on the movements of the asteroids to ensure any kind of threat is quickly found.
Entertainment news
Three-dimensional muon imaging of cavities inside the Temperino mine (Italy) | Scientific Reports – Nature.com
Muon imaging at the Temperino mine
In order to obtain the measured transmission (t_ {meas} (varphi , theta )) of muons at the measurement positions it is necessary to compare the muon counts obtained in the target configuration with those measured in a free-sky one.The two-dimensional angular maps of the counts obtained in both configurations are shown in Fig.
4a which refers to measurement position 1 (similar maps are obtained for measurement position 3 and 5) and in Fig.4b.As indicated in Fig.
4a, each bin represents a particular pseudo-polar direction ((varphi , theta )), the value of the zenith angle (theta) is the distance from the centre and the value of the azimuth angle (varphi) is evaluated clockwise from North.The center of the map represents the vertical direction of the detector (corresponding to (theta =0^{circ })).
These maps are geo-referenced and must be interpreted as seen from above.The measurements in the mine lasted about 60 days, for a total of about 2 million reconstructed events.The detector was oriented towards the zenith, under an overburden of roughly fifty metres of rock, with a resulting trigger rate of about 0.5 Hz and with each (X-Y) module achieving more than 99% efficiency.Figure 4b refers to a free-sky measurement made previously at the INFN building in Florence with the detector again pointing to the zenith.In this case, about 37 million reconstructed events were acquired in 53 days with a trigger rate of about 22 Hz.
Using equation (
1) we obtain the plot in Fig.
4c, which represents the muon measured transmission (t_ {meas}(varphi ,theta )) in the mine from measurement position 1, with the contour of the Gran Cava’s laser scan shown.In correspondence of the two access points of the quarry there is a noticeable increase in the muon transmission.Furthermore, coherently with the morphological trend of the hill, the muon transmission decreases in the SW-NE direction, due to the increase in the rock layer’s thickness.The simulation program used in this work 7, 23 includes a realistic ground muon flux model and implements the geometry of the target structure (i.e.the Gran Cava).
Concerning the geometry of the mine and the thickness of the rock crossed, we used a LiDAR survey ((2times 2),mathrm {m ^ {2}}) of the surface of the hill above the mine obtained from the Ministry of the Environment and Land and Sea Protection 24.The simulated transmission (t_ {simu} (varphi , theta , rho )) can be obtained in the same way as from equation ( 1) using, in this case, the simulated target and free-sky fluxes:
$$begin{aligned} Phi _{simu-target}(varphi ,theta ,rho )= & {} int _{E_{min}(varphi ,theta ,rho )}^{infty }phi (varphi ,theta ,E) ,dE end{aligned}$$
(3)
$$begin{aligned} Phi _{simu-free}(varphi ,theta )= & {} int _{E_{0}}^{infty }phi (varphi ,theta ,E) ,dE end{aligned}$$
(4)
where (E_ {0} simeq 130, textrm{MeV}) is the minimum muon energy necessary to traverse the detector materials
12, (E_ {min}) is the minimum energy for which, in the target measurement, the muon can traverse the target and be detected.
This energy value derives from a calculation that takes into account the thickness and density of the materials crossed (l(varphi , theta )).The differential flux model of cosmic muons on the ground (phi (varphi ,theta ,E)) is obtained from measurements with the ADAMO magnetic spectrometer (INFN Florence) 25, 26.Figure 4d shows the simulated muon transmission obtained assuming a homogeneous density of the target of (2.65 , mathrm {g / cm ^ {3}}) (density of the standard rock 27).
Concerning this last plot, the muons are simulated with a larger acceptance than that of the detector.The absence of events in the NE direction near the boundary (for (theta sim 60^{circ })–(70^{circ })) is due to the significant overburden of the rock in that region due to the presence of the hill.Also, the presence in the centre of the map (in the vertical direction) of a high transmission zone, is due to the fact that the LiDAR data accurately portrays the area of the collapse of the Gran Cava and the main entrance and it is included in the simulated target.
Simulations are also key to obtain an average density distribution from the transmission angular distribution as described in the introduction.Figure
5a shows the two-dimensional angular distributions of the average density obtained from the three measurement positions (with the Gran Cava and two previously unknown cavities indicated with A and B) in range of zenith angles within about (60^{circ }).It is observed that the Gran Cava profile corresponds to zones whose density is less than 2-(2.2,mathrm {g/cm^{3}}).
These values are lower than the densities of the typical rocks that can be found in the mine (some of which are shown in Table https://www.nature.com/articles/s41598-022-26393-7#Tab1) and therefore can be associated with the presence of a cavity.
Other areas with lower average densities appear in the plots: some of them correspond to known cavities and tunnels but others, such as those named A and B in Fig.
5a, correspond to cavities that have never been mapped before.The high density values present in the Gran Cava area (near the two surface accesses), indicate the presence of skarn material below the cavity compatible with the values listed in Table https://www.nature.com/articles/s41598-022-26393-7#Tab1.The same procedure was used to obtain the density distributions from measurements 3 and 5, which are shown in Fig.5b,c.In the next section, the three-dimensional imaging reconstruction of the cavities will be described.
Three-dimensional reconstruction of cavities
Triangulation technique for three-dimensional low density areas localization
Triangulation requires two measurements of the same target with the detector placed in different positions.In this case, the two-dimensional angular density maps obtained from measurements position 1, 3 and 5, shown in Fig.
5, were used.A three-dimensional representation of the principle of operation is shown in Fig.6.
The three cones centred at each measurement point respectively, represent the three angular regions observed by the detector.
The rays projecting from the measurement points have a colour scale linked to the average densities observed in that direction.For example, areas in space where low density rays from different measurement positions intersect will correspond to low density objects in space.In the procedure, a three-dimensional world volume was created and divided into cubic voxels with a side of 1 m 23.
A single voxel’s centre is observed with different polar angles from each of the three measurement positions: ((varphi _{1},theta _{1})), ((varphi _{3},theta _{3})), ((varphi _{5},theta _{5})).If the three sets of coordinates pointing to the voxel correspond to three low density areas in the respective density maps, the voxel is associated with a cavity.
The result of the procedure is shown in Fig.
https://www.nature.com/articles/s41598-022-26393-7#Fig7 in orange scale, where only the voxels which density below a certain threshold are shown.Three distinct clusters emerge: the largest is located at a vertical distance of about 20 m from measurement position 1 (which is located at 185 m above sea level), and is compatible with the Gran Cava, the other two smaller are localized about 15 m (cavity A) and 7 m (cavity B) distance in the vertical direction.Cluster E even though it appears separated from the Gran Cava cluster, is in reality associated to it, the separation beeing an artifact of triangulation method.In fact reconstruction of a cavity based on triangulation of 2D density distributions obtained from different measurement positions requires an intersection of the low density regions independently identified from the different density distributions.
This can be significantly affected by the difference in perspectives under which the distribution of the materials present along the line of sight is seen.The same figure shows the point cloud of the Gran Cava obtained with the laser scanner in order to have a visual comparison with its real development.The elongated shape obtained for the Gran Cava is not an accurate depiction of its real spatial development.In fact, this is a limitation of the triangulation technique that is evident whenever the measurement positions are too close to each other, resulting in a loss of vertical resolution and vertical scale dilation.
Clusters A and B, that are identified as cavities, are not found in cartography of the Temperino mine, so we can’t compare the result with their real spatial development.
These results anyway triggered first explorations performed by a team of speleologists, that seem to confirm their presence.Unfortunatlelly the entrances are obstructed by cave-ins and mud.The back-projection algorithm can address some of the issues and give a more truthful rendering of the cavity volumes.
Back-projection technique, an innovative three-dimensional cavity reconstruction algorithm
The back-projection technique was applied at the Temperino mine to estimate the distance from the detector to the cavities and their profiles as seen by the detector
23.Only the data acquired from the measurement position 1 were used.An example of a back-projection map created at a relative altitude of (z=20) m with respect to the detector, is shown in Fig.
8 on the right.The Cartesian axes represent the linear size of the back-projection plane at the z level.Every back-projection map is a two-dimensional histogram created at different values of the z coordinate in space and is centered on the vertical direction of the detector.A schematic representation is shown in Fig.8 on the left.Each bin contains the difference between the number of back-projected tracks in the target and in the free-sky configuration, normalized using the simulated transmission.Three compact zones with a high number of tracks corresponding to the three cavities are shown.
Compared to density maps, back-projection maps have an inverted Y axis because they are displayed in the detector reference system.
The back-projection technique was applied to each single cavity signal, obtaining a three-dimensional bottom profile of the cavities as seen from the detector’s point of view.In particular, to estimate the profiles of the observed cavities, the technique was applied to slices of the signal (as shown schematically by the red lines in Fig.
8) with a width of 30 cm at a distance of 20 m.This choice defines the accuracy of the reconstruction on the horizontal direction and takes into account the angular resolution of the detector, the presence of multiple scattering and muon statistics in a single slice.To create a three-dimensional rendering of the Gran Cava and the other two cavities, point clouds of the bottom profiles were created and were interpolated approximating the measured profiles.For the three identified low density areas, that we assumed corresponding to cavities, we estimated the air thickness in the different directions based on the average density values along line of sight that characterize the cavities and the surrounding rocks.Figure 9 shows the air thickness angular distributions for the three cavities.
With this method a Gran Cava thickness results of the order of 12-14 m was obtained, comparable to the laser scan survey values.For cavities A and B the thickness of the order of 8 m (for A) and 6 m (for B).
Starting with the bottom profile obtained with the back-projection technique, adding the estimated air thicknesses, a three-dimensional reconstruction of the entire low density volumes was obtained.
Figure
10a shows the reconstructed air volume of the Gran Cava using the procedure described above, while Fig.10b the laser scanner point cloud.The laser scan also contains a region extending in the SE direction that corresponds to a region of the Gran Cava where the vault has collapse and is visible from the exterior.The images were visualized using the CloudCompare software and show a substantial overlap.
To have a quantitative estimate of the difference between the two point clouds, the method “Cloud-to-cloud distance” implemented in the CloudCompare software was used.The method calculates the Euclidean distance between each point of the laser scan point cloud (point cloud of Fig.10b) respect to the closest point of the muographic point cloud (point cloud of Fig.10a).The distance thus calculated is displayed as a color scale on the muographic point cloud.The result is shown in Fig.
10c.The average difference measured between the two point clouds is nearly everywhere less than one metre.
There are some differences in the vault collapsed area and in the volume corresponding to the entrance.The slope in the collapse area seen with muon radiography is steeper than that seen with the laser scanner, probabily due to the presence of many small boulders on the floor that can hide the bottom floor from the laser scanner itself.In the North direction, near the Gran Cava entrance, there is an area that has not been mapped with the laser scanner and which could introduce some uncertainties in the simulated terrain surface profiles.Other small cavities or tunnels partly buried in that region can entangle their signals with the one linked to the Gran Cava.
The three-dimensional reconstruction has been repeated for cavities A and B.Figure 10d shows all three cavities three-dimensional meshes as reconstructed from muographic data.
Finally, a consistency test was performed: the mesh profiles of the unknown cavities reconstructed from measurement position 1 were overlapped on the density maps obtained from the other measurement positions (Fig
5b,c).If the shape, size and height of reconstructed meshes from measurement 1 alone are realistic, their profiles should overlap with low density zones in these maps.The results are shown in Fig.
11 in which an overlap of these profiles with areas of lower density is visible.While for measurement position 5 the correspondence with areas at low density areas is evident, for measurement position 3 it is less clear.This is probably due to high density material which is partly shadowing the signal of the Gran Cava quarry along the line of sight from this measurement position.
Entertainment news
3 Spectacular Growth Stocks to Put in Your Stocking in 2022 – The Motley Fool
After a year like no other, the holiday season is upon us.The combination of rising interest rates, high inflation, and the bear market no doubt has some shareholders thinking “bah, humbug.”
Seasoned investors, however, are filled with the joy of the season, remembering that the downturn in stock prices has resulted in some amazing holiday deals.Many are busy putting pen to paper and making holiday wish lists of their favorite high-growth stocks selling at bargain basement prices.
Here’s a list of three stocks that investors should consider as stocking stuffers this year.
Alphabet
The first remarkable growth stock investors should put in their stocking in 2022 is Alphabet (
GOOGL 1.68%) ( GOOG 1.76%).
The tech giant boasts several industry-leading businesses, including internet search engine Google, cloud computing platform Google Cloud, and streaming video platform YouTube.Businesses have been reining in spending and advertising revenue has taken a hit, but Alphabet’s competitive advantages should put the stock at the top of your gift list.
The foundation for Alphabet’s success is the company’s dominant internet search.Google commands roughly 92% of the worldwide search engine market, and its share hasn’t wavered much in years.
The company’s near-monopoly in search underpins its digital advertising business — another industry it dominates — controlling 29% of global digital ad spending last year.
Google was quick to recognize the vast potential of YouTube’s short-form videos, and its foresight has been amply rewarded.YouTube is the No.1 video streaming platform worldwide, with about 2.6 billion viewers visiting the platform every month, according to Global Media Insight.Alphabet is always on the hunt for ways to boost that revenue, so YouTube should continue to be a long-term winner.
Then there’s Google Cloud, which is the third-largest cloud infrastructure provider, with 9% of the worldwide market according to Canalys.
The digital transformation has only just begun to take shape, so Google is well positioned to expand its share in this lucrative market for many years to come.
Finally, at less than 4 times next year’s sales, Alphabet stock hasn’t been this cheap in nearly a decade.
Toast
The second jaw-dropping growth stock that should be at the top of every investor’s holiday shopping list is Toast (
TOST -0.17%).While it isn’t a household name like Alphabet, Toast is quickly becoming an indispensable technology provider to the restaurant industry.
Most eateries suffer with a hodgepodge of hardware and software systems to take orders, process payments, schedule staff, process digital food orders and deliveries, and order inventory.
Toast does all that and more, with a cloud-based, software-as-a-service (SaaS) platform that consolidates these tasks in one place using a single, integrated system.
Restaurant owners and managers get improved efficiency and lower turnover.Customers get improved service, which results in increased sales and higher tips for employees — which is truly a win-win-win.
In just 15 short months since its
IPO, Toast has made a splash, moving quickly to consolidate a fragmented industry, yet still serves less than 9% of the roughly 860,000 restaurant locations in the U.S., providing a long runway for growth.
For the first nine months of 2022, Toast’s revenue grew 65% year over year and is on track to surpass $1 billion in annual recurring revenue over the next few quarters.Management recently raised its outlook, noting it hadn’t seen any pullback in demand.The company is also expected to reach profitability in 2023, well ahead of schedule.
Co-founders Stephen Fredette, Jonathan Grimm, and Aman Narang are all still at the helm, currently serving as president, chief technology officer, and chief operating officer, respectively — and are heavily invested in Toast’s success.The trio own 86 million shares of Toast stock (and 25% of the voting control), a combined stake valued at $1.54 billion.
Investors should take heart that the founders have a vested interest in the company’s success.
Finally, at just over 2 times next year’s sales, Toast is selling for a song, particularly considering the significant opportunity that remains.
Sea Limited
The third and final stunning growth stock for your stocking is Sea Limited (
SE -0.62%).Despite mounting losses over the past couple of years, this was in service of expanding its ecosystem of three interconnected businesses with room to run over the long term.
Garena, the company’s digital entertainment segment, is driven by its blockbuster mobile videogame Free Fire.While adoption of the game has slowed from its lockdown-induced growth spurt, it remains one of the most downloaded mobile games in the world, fueling Sea Limited’s other business segments.
Shopee, the company’s e-commerce segment, continues to generate enviable growth that is outpacing the industry, with third-quarter revenue of $1.9 billion, up 32%, or 39% in constant currency.This was driven by gross merchandise volume (GMV) of $19.1 billion, up 14%, but even that doesn’t tell the whole story.Core marketplace revenue grew 54%, while value-added services increased 20%.This seems to dispel the rumor that e-commerce is dead.
Sea Limited’s smallest, but perhaps most promising, segment is Sea Money, its
fintech business.
Revenue of $327 million grew 147% year over year, fueled by its mobile wallet and credit businesses.
Management has recently been laser-focused on profitability, making great strides, as evidenced by a 45% quarter-over-quarter improvement in adjusted
EBITDA, excluding one-time charges.
This ecosystem of businesses should continue to grow for some time to come.Furthermore, the stock is selling at just 2 times next year’s sales, the cheapest
price-to-sales ratio in Sea Limited’s history.
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