75 research outputs found
Povertà e potere. Un corpo a corpo
No full textThe question that moves this essay is whether there is an opposite of power, which is not non-power as a simple negation, but its opposite. If it is possible to fight against power without submitting to its essence. Poverty could be interpreted in this sense, as a form of conscious dispossession of the will to dominate
Joining Diversification and Optimization for Asset Allocation
No full textThe classical approach to portfolio selection calls for finding a feasible portfolio that
optimizes one of the several proposed risk measures, or (expected) utility functions,
or performance indexes. However, the optimization approach might be misleading
due to the difficulty of obtaining good estimates for the parameters involved in thefunction to be optimized and to the high sensitivity of the optimal solutions to the
input data.
This observation has led some researchers to claim that a straightforward capital
diversification, i.e., the Equally Weighted portfolio can hardly be beaten by an optimized
portfolio [3]. However, if the market contains assets with very different
intrinsic risks, then this leads to a portfolio with limited total risk diversification.
Therefore, alternative risk diversification approaches to portfolio selection have been
proposed, such as the practitioners’ approach of taking weights proportional to 1/σi
,
where σi
is the volatility of asset i. A more thorough approach to risk diversification
requires to formalize the notion of risk contribution of each asset, and then to manage
it by a model. For example the Risk Parity approach (see [5], and references therein)
aims at a portfolio where the total risk contributions of all assets are equal among
them [4]. The original risk parity approach was applied to volatility. However alternative
risk measures can also be considered (see, e.g., [1]). It can also be shown that
the Risk Parity approach is actually dominated by Equal Risk Bounding [2], where
the total risk contributions of all assets are bounded by a common threshold which is
then minimized. Furthermore, several alternative approaches to diversify risk have
recently appeared in the literature.
We propose here a new approach that tries to reduce the impact of data estimation errors
and to join the benefits of the optimization and of the diversification approaches
by choosing the portfolio that is best diversified (e.g., Equally Weighted or Risk Parity)
on a subset of assets of the market, and that optimizes an appropriate risk, or
utility, or performance measure among all portfolios of this type. We show that this
approach yields portfolios that are only slightly suboptimal in-sample, and generally
show improved out-of-sample performance with respect to their purely diversified or
purely optimized counterparts.
[1] Cesarone F, Colucci S (2015) Minimum Risk vs. Capital and Risk Diversification
Strategies for Portfolio Construction. Available at SSRN:
http://ssrncom/abstract=2552455
[2] Cesarone F, Tardella F (2016) Equal risk bounding is better than risk parity for
portfolio selection. Journal of Global Optimization pp 1–23
[3] DeMiguel V, Garlappi L, Uppal R (2009) Optimal versus naive diversification:
How inefficient is the 1/N portfolio strategy? Rev Financ Stud 22:1915–1953
[4] Maillard S, Roncalli T, Teiletche J (2010) The Properties of Equally Weighted
Risk Contribution Portfolios. J Portfolio Manage 36:60–70
[5] Roncalli T (2014) Introduction to risk parity and budgeting. Chapman &
Hall/CRC Financial Mathematics Series, CRC Press, Boca Raton, F
"Senza essere" e "privo di niente". L'essere e l'ente a partire dall'evento (Ereignis)/a partire dall'inizio (Anfang).
No full textI Trattati inediti degli anni Trenta e Quaranta propongono l'elaborazione della domanda sull'essere in maniera radicale, seguendo la stessa dinamica di superamento/involgimento dell'essere nella sua verità quale evento dell'inizio. In questo movimento di inabissamento dell'essere in direzione del carattere iniziale della sua essenza quale inizio è catturato anche l'ente e la sua differenza dall'essere. L'intento del contributo è quello di dar conto del modo in cui, soprattutto nei Trattati degli anni Quaranta ("Über Den Anfang" e "Das Ereignis"), Heidegger ripensi e ridefinisca il rapporto tra l'essere e l'ente
L'evento e la storia. Il lessico della forza nei "Trattati inediti"
No full textIl saggio indaga la connessione tra i termini che compongono il lessico della forza (Macht, Kraft, Machenschaft) nei Trattati inediti di Heidegger dal 1936 al 1944 come chiave per intendere la collocazione del pensiero heideggeriano rispetto agli eventi storici che prepararono e accompagnarono il secondo conflitto mondiale in Germania
“Die Sage des Seyns” nei Beiträge. La ricerca del dire originario tra parola e silenzio
No full text
Heidegger und die technische Welt
No full textDieser Band thematisiert Heideggers Verständnis der technischen Welt und deren Verhältnis zu Kunst, Politik und Sprache. Diskutiert wird dabei auch, wie Heideggers Denken der Technik von Philosophen der Gegenwart aufgegriffen und weiter entwickelt wird und wie es dabei helfen kann, Globalisierung, Digitalisierung und die Entwicklung in den Biotechnologien philosophisch zu verstehen
A mother of light in the age of Enlightenment: Heterodoxy, interiority, and epistemology in eighteenth-century New Spain
No full textColonial Mexico was a land steeped in Marian devotion, both to invocations brought from Europe and those arising locally. Into this Marian Zodiac of New Spain, Madre Santísima de la Luz entered in the early 18th century, and her devotion swiftly proliferated. The cult and image of this Most Holy Mother serve as an excellent case study to examine certain contentions in the age of Enlightenment, because just at the beginning of the period of contention, she burst into view in a blaze of light, proclaiming an alternate vision of a divine feminine, disciplined interiority, and knowledge as experience—alternate, that is, to the vision of enlightened reform and enlightened philosophy that was in process of taking root.
In this dissertation, I examine these contentions of ideas and practices between what scholars have called traditional baroque devotion and both enlightened reform religiosity and the more radical enlightened philosophy. This examination is based on a study of the history, visual imagery, and iconography of Madre de la Luz; and of many texts, including devotionaries, treatises on mystical theology, artistic treatises, archival materials, council proceedings, and other resources.
The areas of contention that I study are principally three: (1) heterodoxy; (2) interiority and exteriority; and (3) epistemology. In each of these areas, the image and cult of Madre de la Luz offer serious challenges to an orthodoxy that is established or is in process of being established. With regard to heterodoxy, they provide an alternate view to particular Catholic dogmas and religious attitudes. The challenge is made through the divine feminine redemptive force, blurring dogmatic options and tolerating ambiguity, that Madre represents. With regard to interiority and exteriority, they provide an alternate view to the newly developing orthodoxy of enlightened reform, with its preference for states of interiority intended to serve external useful ends and for the new bounded self. This challenge is made through a valuation of interiority for its own sake, tolerating a fluid self. With regard to epistemology, they provide an alternate view to the newly developing orthodoxy of the enlightened epistemology of disengaged study that claims dominance over an epistemology of direct experience. This challenge is made by proclaiming the value of the epistemology of experience, while appreciating the enlightened epistemology.
Through the study of these contentions, the dissertation makes a number of claims as part of the extended scholarly project that contrasts ideas from the baroque and enlightened eras. It proposes that both the enlightened reformers of the late 18th century and modern scholars have misunderstood the roles of interior and exterior practices in both baroque Catholicism and enlightened reform Catholicism; thereby suggesting that we need to free ourselves from a reliance on enlightened reformers’ judgments, and attend to the teacher-practitioners of baroque religion themselves. Its more careful study of baroque devotional texts on Madre de la Luz (than any previous study), has identified intense interiorizing practices promoted within a context of exterior practices; thereby suggesting that we need to not only re-evaluate our understanding of the two Catholicisms, but also how we conceive of interiority, exteriority, and their interrelation. The dissertation gives voice to proponents of baroque interiorizing religion, a voice that has been hitherto poorly heard in the scholarly literature; and thus offers a more nuanced view of baroque interiorizing religious practice. It elaborates connections between iconography and devotional practice. It presents a comparative metaphorology of baroque and Enlightenment visual images, expanding the work of earlier scholars’ Enlightenment metaphorologies. It contrasts baroque epistemology of experience versus enlightened epistemology of disengaged study. It expands cases of particular doctrinal heterodoxies to express challenges against wider orthodoxies. Finally, as an undercurrent, it suggests first, the value of studying other religious systems (such as the religious philosophies of India) for understanding devotional religion in Mexico, and second, the importance of taking the researcher’s experience into account when doing historical research.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-08-01The student, Bernard Cesarone, accepted the attached license on 2018-06-07 at 16:17.The student, Bernard Cesarone, submitted this Dissertation for approval on 2018-06-07 at 16:53.This Dissertation was approved for publication on 2018-06-07 at 18:20.DSpace SAF Submission Ingestion Package generated from Vireo submission #12618 on 2018-09-27 at 11:33:05Made available in DSpace on 2018-09-27T16:45:30Z (GMT). No. of bitstreams: 3
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