objektbuch   249

« earlier    

List of languages by total number of speakers - Wikipedia
- has both L1 (native speakers) and L2 (second-language speakers)
- I'm guessing most of Mandarin's L2 speakers are Chinese natives. Lots of dialects and such (Cantonese) within the country.
wiki  reference  data  list  top-n  ranking  population  scale  language  linguistics  anglo  china  asia  foreign-lang  objektbuch  india  MENA  europe  gallic  demographics 
4 weeks ago by nhaliday
Bragging Rights: Does Corporate Boasting Imply Value Creation? by Pratik Kothari, Don M. Chance, Stephen P. Ferris :: SSRN
We examine all S&P 500 firms over 1999-2014 that publicly characterize their annual performance with extreme positive language. We find that only 18% of such firms increase shareholder value, while nearly 75% have insignificant performance, and the remaining 7% actually destroy shareholder value. Our evidence suggests that firms often base their positive claims on high raw returns or strong relative accounting performance. In comparison to firms that generate positive abnormal returns without boasting, our sample firms tend to have superior accounting performance. These results show that boasting about performance is rarely associated with value creation and is consistent with executive narcissism.
study  economics  business  management  stylized-facts  trivia  leadership  finance  investing  objektbuch  correlation  language  emotion 
april 2018 by nhaliday
The rate of return on everything - Marginal REVOLUTION
Here is what I learned from the paper itself:

1. Risky assets such as equities and residential real estate average about 7% gains per year in real terms.  Housing outperformed equity before WWII, vice versa after WWII.  In any case it is a puzzle that housing returns are less volatile but about at the same level as equity returns over a broader time span.
2. Equity and housing gains have a relatively low covariance.  Buy both!
3. Equity returns across countries have become increasingly correlated, housing returns not.
4. The return on real safe assets is much more volatile than you might think.
5. The equity premium is volatile too.
6. The authors find support for Piketty’s r > g, except near periods of war.  Furthermore, the gap between r and g does not seem to be correlated with the growth rate of the economy.

I found this to be one of the best and most interesting papers of the year.
econotariat  marginal-rev  commentary  study  summary  economics  macro  investing  ORFE  securities  data  street-fighting  objektbuch  scale  time-preference  cost-benefit  outcome-risk  housing  money  monetary-fiscal  debt  history  mostly-modern  world-war  trends  correlation  moments  growth-econ  inequality  piketty  stylized-facts  war  meta:war 
december 2017 by nhaliday
python - Short Description of the Scoping Rules? - Stack Overflow
Actually, a concise rule for Python Scope resolution, from Learning Python, 3rd. Ed.. (These rules are specific to variable names, not attributes. If you reference it without a period, these rules apply)

LEGB Rule.

L, Local — Names assigned in any way within a function (def or lambda)), and not declared global in that function.

E, Enclosing-function locals — Name in the local scope of any and all statically enclosing functions (def or lambda), from inner to outer.

G, Global (module) — Names assigned at the top-level of a module file, or by executing a global statement in a def within the file.

B, Built-in (Python) — Names preassigned in the built-in names module : open,range,SyntaxError,...

As a caveat to Global access - reading a global variable can happen without explicit declaration, but writing to it without declaring global(var_name) will instead create a new local instance.

--

Essentially, the only thing in Python that introduces a new scope is a function definition. Classes are a bit of a special case in that anything defined directly in the body is placed in the class's namespace, but they are not directly accessible from within the methods (or nested classes) they contain.
q-n-a  stackex  programming  intricacy  gotchas  python  pls  objektbuch  cheatsheet 
november 2017 by nhaliday
The Moon And Tides
Why does the Moon produce TWO water tides on the Earth and not just one?
"It is intuitively easy to understand why the gravitational pull of the Moon should produce a water tide on the Earth in the part of the ocean closest to the moon along the line connecting the center of the Moon with the center of the Earth. But in fact not one but TWO water tides are produced under which the Earth rotates every day to produce about two high tides and two low tides every day. How come?

It is not the gravitational force that is doing it, but the change in the gravitational force across the body of the Earth. If you were to plot the pattern of the Moon's 'tidal' gravitational force added to the Earth's own gravitational force, at the Earth's surface, you would be able to resolve the force vectors at different latitudes and longitudes into a radial component directed towards the Earth's center, and a component tangential to the Earth's surface. On the side nearest the moon, the 'differential' gravitational force is directed toward the Moon showing that for particles on the Earth's surface, they are being tugged slightly towards the Moon because the force of the Moon is slightly stronger at the Earth's surface than at the Earth's center which is an additional 6300 kilometers from the Moon. On the far side of the Earth, the Moon is tugging on the center of the Earth slightly stronger than it is on the far surface, so the resultant force vector is directed away from the Earth's center.

The net result of this is that the Earth gets deformed into a slightly squashed, ellipsoidal shape due to these tidal forces. This happens because if we resolve the tidal forces at each point on the Earth into a local vertical and horizontal component, the horizontal components are not zero, and are directed towards the two points along the line connecting the Earth and the Moon's centers. These horizontal forces cause rock and water to feel a gravitational force which results in the flow of rock and water into the 'tidal bulges'. There will be exactly two of these bulges. At exactly the positions of the tidal bulges where the Moon is at the zenith and at the nadir positions, there are no horizontal tidal forces and the flow stops. The water gets piled up, and the only effect is to slightly lower the weight of the water along the vertical direction.

Another way of thinking about this is that the gravitational force of the Moon causes the Earth to accelerate slightly towards the Moon causing the water to get pulled towards the Moon faster than the solid rock on the side nearest the Moon. On the far side, the solid Earth 'leaves behind' some of the water which is not as strongly accelerated towards the Moon as the Earth is. This produces the bulge on the 'back side' of the Earth."- Dr. Odenwald's ASK THE ASTRONOMER
org:junk  nibble  space  physics  mechanics  cycles  navigation  gravity  marginal  oceans  explanation  faq  objektbuch  rhythm 
november 2017 by nhaliday

« earlier    

related tags

:/  abortion-contraception-embryo  absolute-relative  academia  accuracy  acm  advice  africa  age-generation  age-of-discovery  aging  agriculture  ai  amt  analysis  anglo  anglosphere  anthropology  antidemos  antiquity  aphorism  apollonian-dionysian  applications  approximation  archaeology  archaics  arms  arrows  article  asia  attaq  audio  authoritarianism  automation  axioms  backup  benchmarks  best-practices  better-explained  big-peeps  big-picture  bio  bioinformatics  biophysical-econ  biotech  brands  britain  broad-econ  business  c(pp)  calculation  calculator  california  canada  career  chart  cheatsheet  checklists  china  civil-liberty  civilization  class-warfare  class  climate-change  coalitions  cocktail  cold-war  commentary  comparison  compensation  complex-systems  complexity  concept  conquest-empire  contrarianism  cooking  correlation  corruption  cost-benefit  counter-revolution  crime  crooked  crosstab  culture  current-events  cycles  cynicism-idealism  data-science  data  database  dataset  dataviz  dbs  death  debt  debugging  deep-materialism  defense  definite-planning  democracy  demographics  density  desktop  deterrence  developing-world  devtools  diet  differential  dignity  dirty-hands  discovery  discussion  disease  distribution  dominant-minority  drama  driving  drugs  duality  duty  dynamic  dysgenics  early-modern  earth  eastern-europe  ecology  econ-metrics  econometrics  economics  econotariat  editors  education  efficiency  egalitarianism-hierarchy  electromag  elite  embodied-pack  embodied  emotion  empirical  endogenous-exogenous  energy-resources  engineering  ensembles  entertainment  environment  epidemiology  estimate  ethanol  ethics  ethnocentrism  ethnography  eu  europe  evidence-based  evidence  evolution  examples  expansionism  expectancy  experiment  expert-experience  expert  explanation  exploratory  faq  fermi  fertility  fighting  film  finance  fitsci  fluid  flux-stasis  food  foreign-lang  foreign-policy  fourier  frequency  frontier  gallic  games  garett-jones  gelman  gender-diff  gender  genetic-load  genetics  geography  geopolitics  germanic  giants  gibbon  git  gnon  gotchas  government  grad-school  graphs  gravity  great-powers  ground-up  group-level  growth-econ  h2o  hard-tech  hardness  hari-seldon  harvard  health  healthcare  heavy-industry  heuristic  hi-order-bits  high-dimension  higher-ed  history  hmm  horror  housing  howto  human-bean  hypochondria  hypocrisy  ide  ideas  identity-politics  identity  ideology  ieee  impetus  incentives  increase-decrease  india  industrial-revolution  inequality  info-foraging  infographic  init  innovation  input-output  institutions  integral  interests  intricacy  investing  iraq-syria  iron-age  iteration-recursion  japan  jargon  journos-pundits  korea  kumbaya-kult  labor  language  latin-america  law  leadership  learning  lecture-notes  left-wing  lesswrong  let-me-see  letters  leviathan  lexical  libraries  life-history  lifehack  linearity  linguistics  links  list  local-global  long-short-run  longevity  low-hanging  lower-bounds  machiavelli  machine-learning  macro  madisonian  magnitude  management  maps  marginal-rev  marginal  martial  math.ca  math.cv  math.nt  math  matrix-factorization  maxim-gun  measure  measurement  mechanics  media  medicine  mediterranean  memes(ew)  mena  mental-math  meta:war  metabolic  metabuch  methodology  metrics  midwest  migration  military  mit  model-class  modernity  moments  monetary-fiscal  money  mood-affiliation  morality  mostly-modern  multi  mutation  nascent-state  natural-experiment  nature  navigation  news  nibble  nietzschean  nihil  nitty-gritty  nl-and-so-can-you  nordic  northeast  notation  nuclear  nutrition  nyc  occident  oceans  ocw  old-anglo  order-disorder  orfe  org:anglo  org:biz  org:data  org:edu  org:euro  org:fin  org:gov  org:health  org:junk  org:lite  org:mag  org:mat  org:nat  org:ngo  org:popup  org:rec  org:sci  osx  outcome-risk  outdoors  overflow  oxbridge  papers  parasites-microbiome  paternal-age  pdf  peace-violence  personal-finance  phalanges  phys-energy  physics  pic  piketty  piracy  planning  plots  pls  policy  polis  polisci  political-econ  politics  poll  pop-structure  popsci  population  power-law  power  prediction-markets  prediction  prepping  preprint  princeton  priors-posteriors  privacy  pro-rata  probability  profile  programming  properties  protocol  public-goodish  public-health  publishing  putnam-like  python  q-n-a  qra  quixotic  race  random  ranking  ratty  realness  realpolitik  reddit  redistribution  reduction  reference  reflection  regional-scatter-plots  regression  regularizer  regulation  religion  rent-seeking  reputation  retention  rhythm  risk  ritual  roots  rot  rounding  russia  s-factor  safety  sanctity-degradation  sapiens  scale  schelling  science-anxiety  scitariat  search  securities  security  sequential  sex  sexuality  shift  short-circuit  signum  simulation  sinosphere  skunkworks  sky  sleuthin  slides  social-structure  social  society  sociology  socs-and-mops  space  spatial  speaking  spearhead  speedometer  spock  sports  spreading  stackex  stanford  stats  status  stock-flow  stories  strategy  street-fighting  study  studying  stylized-facts  summary  survival  sv  symbols  symmetry  syntax  tactics  tainter  taxes  tcs  tech  technology  techtariat  temperature  terrorism  texas  the-classics  the-great-west-whale  the-south  the-trenches  the-west  the-world-is-just-atoms  things  thinking  threat-modeling  thucydides  tidbits  time-preference  time-series  time  tools  top-n  traces  track-record  trade  transportation  travel  trends  tribalism  tricks  trivia  trump  trust  tutorial  twitter  unaffiliated  uncertainty  unintended-consequences  urban-rural  urban  us-them  usa  values  variance-components  video  virginia-dc  visual-understanding  visualization  visuo  volo-avolo  war  washington  wealth-of-nations  wealth  west-hunter  westminster  white-paper  wiki  wire-guided  within-group  wonkish  working-stiff  world-war  world  writing  x-sports  yoga  🌞  🎩  🐸  🔬  🖥 

Copy this bookmark:



description:


tags: