Search results for "Hull"

Volatility in Financial Markets: Stochastic Models and Empirical Results

2002

We investigate the historical volatility of the 100 most capitalized stocks traded in US equity markets. An empirical probability density function (pdf) of volatility is obtained and compared with the theoretical predictions of a lognormal model and of the Hull and White model. The lognormal model well describes the pdf in the region of low values of volatility whereas the Hull and White model better approximates the empirical pdf for large values of volatility. Both models fails in describing the empirical pdf over a moderately large volatility range.

Parametric Design of Sailing Hull Shapes

2006

The author presents an original algorithm aimed at automatically generating the hull shape of a sailing yacht starting from an initial set of parameters. The procedure consists of two steps. First one keel line and a Designed Water Line (DWL in the following) are faired according to a set of parameters, say length of water line, canoe body draft, stem angle and some adimensional coefficients. This information is then used to fair the hull surface, which must in turn fulfil more prerequisites (parameters like displaty cement, floatation area and related coefficients). The hull is defined by means of a B-spline surface, the fairing of which is ensured by allowing for all the imposed objective…

Closed Form Approximation of Swap Exposures

2013

This paper provides closed form lower and upper bounds for the price of European swaption on cross currency basis swap with the presence of dynamic basis spreads. Cross currency basis spreads are treated as integrals of spot spreads, approach familiar from interest rate models. The spot spread is modelled by two-factor mean reverting Gaussian model that is equivalent to two-factor Hull-White model introduced by [Hull and White(1994)]. This model allows closed form approximations and relatively well fitting and simple calibration to the spread term structure.

Design of the stabilization control system of a high-speed craft

2016

In this paper, the main causes of technical malfunction of a hydrofoil was analyzed. In particular, a preliminary analysis evaluates the economic impact for the navigation company of the periodical maintenance related to the keeping of the vessel in dry dock. The study demonstrated that the main critical points are focused on the fragility of the stabilization control system. The increasing of operating costs has motivated the realization of a study aimed at redesigning the stabilization system. The continuing failure of the stabilization system (usually in water-immersed) severely limits the use of the high-speed craft. The proposed design solution considers the positioning of the control …

Improving the Frying Performance and Oxidative Stability of Refined Soybean Oil by Tocotrienol-Rich Unsaponifiable Matters of Kolkhoung (Pistacia khi…

2018

Increasing consumer awareness for all natural products has quickly led to growing research on new resources of potent and profitable natural antioxidants. In this context, for the first time, the Kolkhoung hull oil (KHO) (Pistacia khinjuk)-unsaponifiable matters (USM) (UHO) (100, 200, and 400 mg kg−1) were incorporated into refined soybean oil (RSO) and the oxidative stability of prepared oils was measured during 32 hours of frying. Then, the obtained results (oxidative stability) were compared to the samples containing tert-butyl hydroquinone (TBHQ) (100 mg kg−1) as a common synthetic antioxidant. According to the results of oxidative stability assays of acid values, conjugated diene value…

"Ääni on meissä, joka olemme, kun meitä ei ole" : skitsofrenian muotoja ja poetiikkaa Neuromaanissa

2019

publishedVersion peerReviewed

Topology Optimization Design of Internal Reinforcements in a Sailing Dinghy

2021

AbstractIn this paper, a novel approach has been followed based on FEM simulation and Topology Optimization tools to locate and model the reinforcements inside the hull of a sailing dinghy. This process assumes that the inner volume included between the hull and the deck is, at the beginning of the simulation, filled with material; then a portion of this inner volume is eroded until a final free form shape of the reinforcements is obtained. A key point of this procedure is the definition of the optimization constrains because the final shape of the reinforcements must fulfill several requirements such as weight, stiffness and stress. At the end of the optimization procedure, the final shape…

Hullu lehmä lautasella : suomalaisen ruoan luottamuksen rakentuminen

2005

”Sanovat minua hulluksi” : hulluuden määrittyminen, merkityksellistyminen ja nimeäminen Arto Paasilinnan Ulvovassa myllärissä

2014

Tutkimus käsittelee hulluuden määrittymistä, merkityksellistymistä ja nimeämistä Arto Paasilinnan fiktiivisessä romaanissa Ulvova mylläri (1981), jonka päähenkilöä Gunnar Huttusta aletaan pitää hänen kotikylässään hulluna. Tutkimus asettaa kolme hulluutta koskevaa viitekehystä, joiden kautta hulluus voidaan määritellä ja merkityksellistää, ja tarkastelee noiden viitekehysten ilmentymiä romaanissa. Viitekehyksien kautta tutkimus tarkastelee hulluutta poikkeavuutena (1), järjen puutteena tai vajavaisuutena (2) ja mielisairautena (3).

Hulluus ja kulttuurinen mielenterveystutkimus

2019

Hulluus ja kulttuurinen mielenterveystutkimus pureutuu siihen, miten käsityksiä hulluudesta, mielenterveydestä ja poikkeavuudesta on eri aikoina ja eri paikoissa tuotettu kielessä, taiteessa ja kulttuurisissa käytänteissä. Artikkelikokoelmassa hulluuden rajojen määrittely nähdään historiallisena ja kulttuurisidonnaisena. Sitä lähestytään ilmiönä, joka kattaa laajan kirjon outoudesta patologiaan. Teos on syntynyt osana Jyväskylän yliopiston humanistisessa tiedekunnassa 2013 perustetun Kulttuurisen mielenterveystutkimuksen tutkijaverkoston toimintaa. Verkoston jäseniä on yhdistänyt tieteenalarajat ylittävä kiinnostus hulluuteen ja mielenterveyteen. Artikkeleissa hulluutta tarkastellaan eletty…