A while back, I went looking for a TNG version of Deanna – not finding one, I obviously had to make one myself.

The last time I edited video was 1998.

[Link]

Come join our April non-fools day Indoor Scavenger Hunt! Can you find all the things? Post a photo or poem etc of your finds, and suggest things for people to seek.

Amanda Palmer explores how seeing Nick Cave's performance of "Magneto" in the documentary "On More Time With Feeling" showed her how powerful inviting an audience into deeply personal experiences could be. "The ability too walk into the dark and carefully take people with you is why we do our jobs."

Trevor Ashby's property south of Mount Gambier looks like a typical dairy farm from the roadside, but hidden among the cows is a tiny portal into a world-class dive site.

Moss Vale photographer Ashley Mackevicius couldn't compete with his school friend Nick Cave for music or poetry skills, so he switched to photography. Cave went on to become one of Australia's greatest ever musicians, and Mackevicius did the same for photography.

Katherine Comparti says "everything you could imagine" went through her mind when she became lost in thick jungle during a holiday to the remote island of Christmas Island off the West Australian coast.

Exchanging garbage for clothes might seem an unusual trade, but that is exactly what happens at the Seaside Scavenge.

Colby Cave, an excellent teammate whose lone goal for the Edmonton Oilers this season came on an “awesome” rush down the ice, died Saturday after a brain bleed this week. He was 25.

A review by piltdown_man (179399). A short but enjoyable bit of perversion

Greetings from Carlsbad NM We made it here yesterday from El Paso Texas. It was an easy 160 mile day. We are staying at the Carlsbad RV Park just outside of Carlsbad. It is an OK park. There are lot's of oil worker staying here. Many are from Texas. It

The secret car lairs of L.A. are under the radar and plentiful. Check out one of the latest: a state-of-the-art garage near LAX that is part Pantheon, part Batcave. Cigars? They have that too.

A new year brings another run at my annual predictions: For 17 years now, I’ve taken a few hours to imagine what might happen over the course of the coming twelve months. And my goodness did I swing for the fences last year — and I pretty much whiffed. Batting .300 is great in the majors, but it … Continue reading "Predictions 2020: Facebook Caves, Google Zags, Netflix Sells Out, and Data Policy Gets Sexy"

Marilyn Goudreault
Jan 1, 2009; 8:157-171
Research

S Xu
Jul 1, 1997; 38:1289-1298
Articles

• Quest For Fire
• 10,000 B.C.
• What We Watched
• Miscellaneous Banter

The Government is actively exploring sustainable and innovative approaches to expand the city’s land resources. One viable source of land supply is rock cavern development.

The relocation of suitable existing government facilities to caverns can release above-ground sites for housing and other beneficial uses. This would reduce the amount of land occupied by them, as well as relocate facilities which do not need to be above-ground and are incompatible with the surrounding environment and land uses nearby.

Mountain move

Sha Tin Sewage Treatment Works is one such facility. It will be relocated to caverns in Nui Po Shan of A Kung Kok to release the existing site of about 28 hectares for housing and other uses that will enhance Hong Kong’s living quality and bring extended benefits to the community and environment of Sha Tin.

Drainage Services Department Sewerage Projects Division Engineer Brian Chan said that moving the sewage treatment plant to caverns minimises any adverse impact on the environment and community.

“The whole sewage treatment works will be put inside the cavern and the cavern will serve as a natural barrier fully enclosing the sewage treatment works. With the implementation of an effective odour management system, the odour impact to the community will be minimised.”

Mr Chan added that moving the existing plant, which has been in operation for more than 35 years, provides an opportunity to formulate a long-term strategy for the ageing facility.

High-tech solutions

The relocated Sha Tin Sewage Treatment Works will consist of several caverns.

A successful local example of accommodating facilities in rock caverns is Stanley Sewage Treatment Works on which the layout for the Sha Tin treatment plant is based.

To reduce the required cavern space and shorten the construction period, advanced sewage and sludge treatment technologies will be used.

Water recycling is a multi-stage process in wastewater treatment plants.

Mr Chan explained that moving bed biofilm reactors will be used in the secondary treatment process at the relocated Sha Tin plant as they require less space than the traditional wastewater treatment.

“Compared to the conventional method, there will be some biofilm carriers inside the reactor and this biofilm carrier will enlarge the surface area for the biological treatment and therefore, the overall size will be reduced. In terms of the sewage treatment process, there will be about a 20% reduction in the areas.”

Sha Tin Sewage Treatment Works serves a population of about 630,000 in Sha Tin and Ma On Shan, which produce 250,000 cubic metres (m3) of sewage daily. After the relocation, the facility will be able to handle 340,000 m3 of sewage per day.

The first phase of works to relocate Sha Tin Sewage Treatment Works to caverns began in February. The Drainage Services Department hopes to start the second phase from the end of next year to early 2021 with the excavation of the caverns. The department plans to move the whole sewage plant in five stages. The project is expected to be completed by 2031.

Members of the public can visit the department's website for more details about the project and its latest developments.

Join host Scott Carey as the team dissects Tory meltdown and what it means for tech and the ministers we haven't heard of. What can they actually do to help the country? Charlotte Jee explains.

Then Henry Burrell chats on the new Microsoft Surface Go, an 'affordable' Surface tablet that actually still breaks the bank. Who is it for, and is Microsoft really chasing the iPad market?

David Price rounds up the pod with Musk Corner as everyone's favourite Twitter megalomaniac flies off to Thailand to help with a cave rescue - but should he stay out of it?

See acast.com/privacy for privacy and opt-out information.

Pennsylvania Avenue, would placing some of them in zoos be unethical? Would they be considered human enough to receive human rights?

Painted images of intriguing human-animal hybrids are signs of modern thought

-- Read more on ScientificAmerican.com

Secret wee Caves the third story in the series "In the Vales" A fun, light fantasy story about a young girl who inherits her Grammy's Cottage in the Vales, then starts to remember some of Grammy's favourite stories of her wee friends. I hear Max the Purple Dragon is such a gentleman, find out more by reading my wee story. "These stories allow you to enter into a parallel world set within our local community. They will take you on a journey to allow your imagination to tell the tales of the adventurous characters in a variety of unique situ's. The dialogue twists between now and then to provide a rich connection to the character's shenanigans, which motivates the reader to visualise beyond the text to create deeper meaning and connection to self, family and the community we live in."

[London] : E. & F.N. Spon, 1881.

Xuening Zhu.

Source: Electronic Journal of Statistics, Volume 14, Number 1, 1413--1448.

Abstract:
High dimensional time series receive considerable attention recently, whose temporal and cross-sectional dependency could be captured by the vector autoregression (VAR) model. To tackle with the high dimensionality, penalization methods are widely employed. However, theoretically, the existing studies of the penalization methods mainly focus on $i.i.d$ data, therefore cannot quantify the effect of the dependence level on the convergence rate. In this work, we use the spectral properties of the time series to quantify the dependence and derive a nonasymptotic upper bound for the estimation errors. By focusing on the nonconcave penalization methods, we manage to establish the oracle properties of the penalized VAR model estimation by considering the effects of temporal and cross-sectional dependence. Extensive numerical studies are conducted to compare the finite sample performance using different penalization functions. Lastly, an air pollution data of mainland China is analyzed for illustration purpose.

Long Feng, Cun-Hui Zhang.

Source: The Annals of Statistics, Volume 47, Number 6, 3069--3098.

Abstract:
The Lasso is biased. Concave penalized least squares estimation (PLSE) takes advantage of signal strength to reduce this bias, leading to sharper error bounds in prediction, coefficient estimation and variable selection. For prediction and estimation, the bias of the Lasso can be also reduced by taking a smaller penalty level than what selection consistency requires, but such smaller penalty level depends on the sparsity of the true coefficient vector. The sorted $ell_{1}$ penalized estimation (Slope) was proposed for adaptation to such smaller penalty levels. However, the advantages of concave PLSE and Slope do not subsume each other. We propose sorted concave penalized estimation to combine the advantages of concave and sorted penalizations. We prove that sorted concave penalties adaptively choose the smaller penalty level and at the same time benefits from signal strength, especially when a significant proportion of signals are stronger than the corresponding adaptively selected penalty levels. A local convex approximation for sorted concave penalties, which extends the local linear and quadratic approximations for separable concave penalties, is developed to facilitate the computation of sorted concave PLSE and proven to possess desired prediction and estimation error bounds. Our analysis of prediction and estimation errors requires the restricted eigenvalue condition on the design, not beyond, and provides selection consistency under a required minimum signal strength condition in addition. Thus, our results also sharpens existing results on concave PLSE by removing the upper sparse eigenvalue component of the sparse Riesz condition.

Charles R. Doss, Jon A. Wellner.

Source: The Annals of Statistics, Volume 47, Number 5, 2950--2976.

Abstract:
We study a likelihood ratio test for the location of the mode of a log-concave density. Our test is based on comparison of the log-likelihoods corresponding to the unconstrained maximum likelihood estimator of a log-concave density and the constrained maximum likelihood estimator where the constraint is that the mode of the density is fixed, say at $m$. The constrained estimation problem is studied in detail in Doss and Wellner (2018). Here, the results of that paper are used to show that, under the null hypothesis (and strict curvature of $-log f$ at the mode), the likelihood ratio statistic is asymptotically pivotal: that is, it converges in distribution to a limiting distribution which is free of nuisance parameters, thus playing the role of the $chi_{1}^{2}$ distribution in classical parametric statistical problems. By inverting this family of tests, we obtain new (likelihood ratio based) confidence intervals for the mode of a log-concave density $f$. These new intervals do not depend on any smoothing parameters. We study the new confidence intervals via Monte Carlo methods and illustrate them with two real data sets. The new intervals seem to have several advantages over existing procedures. Software implementing the test and confidence intervals is available in the R package verb+logcondens.mode+.

Arnak S. Dalalyan, Lionel Riou-Durand.

Source: Bernoulli, Volume 26, Number 3, 1956--1988.

Abstract:
Langevin diffusion processes and their discretizations are often used for sampling from a target density. The most convenient framework for assessing the quality of such a sampling scheme corresponds to smooth and strongly log-concave densities defined on $mathbb{R}^{p}$. The present work focuses on this framework and studies the behavior of the Monte Carlo algorithm based on discretizations of the kinetic Langevin diffusion. We first prove the geometric mixing property of the kinetic Langevin diffusion with a mixing rate that is optimal in terms of its dependence on the condition number. We then use this result for obtaining improved guarantees of sampling using the kinetic Langevin Monte Carlo method, when the quality of sampling is measured by the Wasserstein distance. We also consider the situation where the Hessian of the log-density of the target distribution is Lipschitz-continuous. In this case, we introduce a new discretization of the kinetic Langevin diffusion and prove that this leads to a substantial improvement of the upper bound on the sampling error measured in Wasserstein distance.

Ester Mariucci, Kolyan Ray, Botond Szabó.

Source: Bernoulli, Volume 26, Number 2, 1070--1097.

Abstract:
The estimation of a log-concave density on $mathbb{R}$ is a canonical problem in the area of shape-constrained nonparametric inference. We present a Bayesian nonparametric approach to this problem based on an exponentiated Dirichlet process mixture prior and show that the posterior distribution converges to the log-concave truth at the (near-) minimax rate in Hellinger distance. Our proof proceeds by establishing a general contraction result based on the log-concave maximum likelihood estimator that prevents the need for further metric entropy calculations. We further present computationally more feasible approximations and both an empirical and hierarchical Bayes approach. All priors are illustrated numerically via simulations.

The findings further refute the outdated notion that humans' capacity for complex artistic expression evolved exclusively in Europe

The carvings, which depict animals including camels, leopards, cows and mules, may date back to 3000 B.C.

Anaconda Glacial Cave in Iceland

Tourism Cavendish Beach says it is hopeful the Confederation Bridge and province will reopen to certain visitors as soon as it is safe to do so.

HARRINGTON — Visitors to the Delaware State Fair can learn about farming, explore the fair and win prizes this year with the Delaware Department of Agriculture’s new Fair Scavenger Hunt. Families can search for answers in the fair’s animal barns, on equipment row, and in the DDA buildings, gaining a deeper understanding of the importance […]

Olm are salamanders that spend all their lives in pitch-black caves, and it turns out they don’t move very much – sometimes lurking in the same spot for years

The earliest cave-dwelling animal identified from the dinosaur era is a ghostly white cockroach with tiny eyes and wings that was preserved in amber

Plant-eating cave bears vanished when ice spread across Europe – maybe because their large sinuses prevented them chewing meat to adapt to the new conditions

This bowl-like, double-roof design helps to collect rainwater before it evaporates, and also provides more shade for buildings in arid regions.

Reminiscent of a bear's cozy cave, this bedroom for children maximizes the small space in a playful way.

Snakes, spiders, and bats in a tight space may sound like the stuff of nightmares, but Kantemó, Mexico, is actually an incredible place to visit.

The filming of a Sylvester Stallone movie in a Bulgarian cave has dramatically reduced the animals' numbers, bat experts say.

A small subterranean living space becomes a surprisingly luxurious urban dwelling.