In the skin, sympathetic nerves, arrector pili muscles, and hair follicles form a tri-lineage unit to cause piloerection or goosebumps. In this issue of Cell, Schwartz et al. report that, beyond ...goosebumps, muscle-anchored nerves form “synapse-like” connections with hair follicle stem cells to promote hair regeneration in response to cold.
In the skin, sympathetic nerves, arrector pili muscles, and hair follicles form a tri-lineage unit to cause piloerection or goosebumps. In this issue of Cell, Schwartz et al. report that, beyond goosebumps, muscle-anchored nerves form “synapse-like” connections with hair follicle stem cells to promote hair regeneration in response to cold.
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GEOZS, IJS, IMTLJ, KILJ, KISLJ, NLZOH, NUK, OILJ, PNG, SAZU, SBCE, SBJE, UILJ, UL, UM, UPCLJ, UPUK, ZAGLJ, ZRSKP
Abstract
Assuming N available calendar days, each with M intraday returns, the realized volatility literature suggests creating N end-of-day estimators by summing the M squared returns from each ...particular date. Instead of this “Calendar” realized variance (RV) approach, we propose a “Rolling” rolling RV (RRV) approach that simply sums trailing M returns at each timestamp, regardless if all M returns belong to the same calendar date. When estimating an out-of-sample 1-day realized volatility model, the former results in an ordinary least squares (OLS) regression with N−1 datapoints while the latter incorporates M(N−2)+1 datapoints, effectively lowering the standard errors, and potentially resulting in more accurate forecasts. We compare both models for the S&P 500 and 26 Dow Jones Industrial Average stocks; our results generally suggest that the Rolling approach yields both statistically and economically significant superior out-of-sample performance over the traditional Calendar approach.
THE VUCA CONCEPT IN THE DIGITAL SPHERE Pascalau, Simona Valentina
Agora International Journal of Economical Sciences,
06/2023, Volume:
17, Issue:
1
Journal Article
Peer reviewed
Open access
The article's main goal is to explain the idea of VUCA in detail and show how it may affect digital marketing efforts. The article's goal is to give those interested skills and strategies to deal ...with the difficulties and uncertainties in a constantly evolving digital world by examining the idea of VUCA in the context of digital marketing. It will examine how decision-making in digital marketing can be influenced by elements including volatility, uncertainty, complexity, and ambiguity and how these factors can be effectively controlled. The article's main objective is to inform about the significance and influence of the VUCA concept in the digital sphere and to offer helpful advice for adjusting to and thriving in a digital marketing environment.
Damaskios (5./6. Jh.) ist der letzte Scholarch der Platonischen Akademie und zugleich der letzte systematische Denker der paganen Antike. Die von Pascalau vorgelegte Arbeit untersucht die zentralen ...Themen der Damaskenischen Metaphysik, deren originellster Zug in der Uberbietung des neuplatonischen Transzendenz-Diskurses und in der Setzung eines Prinzips jenseits des Einen besteht. Die Dialektik, die Damaskios entwickelt, um vom Unsagbaren jenseits des Einen zu sprechen, bildet zweifellos die konsequenteste Theorie des Absoluten in der abendlandischen Geistesgeschichte. Pascalau analysiert Damaskios' Argumente fur die Annahme eines absolut transzendenten Prinzips sowie die Methodik, die zu einem unartikulierbaren Bewusstsein des Absoluten hinleitet. Im Lichte des vertieften Transzendenzbewusstseins erweisen sich alle Konzepte der Metaphysik als unartikulierbare Begriffe (arrhetoi ennoiai), die das Unsagbare einzuholen versuchen und dabei standig scheitern. Pascalau zeigt, dass die Vorwurfe des Mystizismus , die vielfach gegen Damaskios vorgebracht wurden, eben aufgrund dieser radikalisierten Theorie des Absoluten unhaltbar sind: Die unio mystica der Seele mit dem Einen scheitert bei Damaskios wegen der Einheits-Transzendenz des Unsagbaren . Was bleibt, ist die Einsicht in die Unerreichbarkeit des ersten Urgrundes und die Selbstbescheidung des Menschen angesichts dieser uberwaltigenden Wahrheit .
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