15,978 research outputs found
Dr. Patricia Ventura, Spelman College, March 2014
No full textThis video is a conversation with Dr. Patricia Ventura. Dr. Ventura talks about her book, "Neoliberal Culture: Living with American Neoliberalism". Yolanda Gilmore-Bivins, AUC Woodruff Library, is the interviewer
Il progetto Aladin: un agroalimentare idro intelligente contro l’approccio settoriale al risparmio idrico
No full textIl progetto ALADIN punta a raggiungere concreti avanzamenti nell’irrigazione ottimale delle colture intensive, in particolare su mais e pomodoro, con una sperimentazione biennale che supera i vecchi approcci settoriali. Essa è basata sulla messa a sistema di tutte le componenti che intervengono nella valutazione dell’esigenza idrica e nelle pratiche irrigue, e sull’integrazione nel collaudato sistema IrriNet del CER, che indica quando e quanto irrigare, per scendere al dettaglio delle parti diversamente idroesigenti all’interno di un singolo appezzamento.
Il raggruppamento ALADIN è composto da: CIDEA Università di Parma, Terra & Acqua Tech Università di Ferrara; CER Bologna, CRPA LAB Reggio Emilia, SSICA Parma, DipSA Università di Bologna, ARPAE Idro-Meteo-Clima Bologna e Azienda Sperimentale Stuard Parma e dalle imprese: AeroDron Parma, Sacmi Imola, RM Irrigation Equipment Parma e Tomato Colors Bologna
A comparison of quasi-likelihood ratios for general estimating functions
No full textGeneral estimating functions are usually used when one desires to conduct inference about a parameter of interest but either robustness with respect to model misspecification is required or the full distribution of the observations is unknown. Unfortunately, the estimating function approach may have
limited utility due to, for instance, a Walds test with poor behaviour even for large samples (see, e.g., Jennings, 1986; Heritier and Ronchetti, 1994; Bellio et al., 2008). The use of a quasi-likelihood ratio test derived from estimating functions seems to be appealing since, as the classical likelihood ratio test,
it avoids the drawbacks of Wald’s type test. Moreover, a quasi-likelihood function for the parameter of interest is generally derived in order to have a quasi-likelihood ratio test with the usual chi-squared asymptotic distribution (see McCullagh, 1991; Barndorff-Nielsen, 1995; Adimari and Ventura, 2002).
The aim of this paper is to compare two different methods of constructing a quasi-likelihood ratio and to show how they are related. The first method is based on the quasi-likelihood approach discussed in Hanfelt and Liang (1995), while the second one is based on a suitable modification of a general estimating function for a parameter of interest in order to achieve the usual first order asymptotic theory (Adimari and Ventura, 2002). The two techniques are illustrated and compared with applications and simulation studies
CROP COEFFICIENTS TO ADAPT FOR CLIMATE CHANGE IMPACT ON EVAPOTRANSPIRATION
No full textCrop water requirements are important factors for food production, expecially in areas where the climate is arid or semiarid. These areas are experiencing increasing population growth, which amplifies the need for more efficient irrigation. Better water use efficiency is needed to produce more food while conserving water as a limited natural resource. Crop coefficients are critically important for estimating crop evapotranspiration, but in literature there are a plethora of articles reporting different values for the same crop, mainly because of different weather and crop management conditions. A new and more precise method of calculation of crop water requirement is presented, which will help improve irrigation scheduling to face future climate change and its effect on world food production
The Study of Musical Performance in Antiquity: Archaeology and Written Sources
No full textIl 6 Novembre 2015 si svolgerà presso l'Aula Olimpia (Museo dei gessi) della Facoltà di Lettere della Sapienza il workshop internazionale The Study of Musical Performance in Antiquity: Archaeology and Written Sources dedicato alle prospettive di studio delle fonti sulla musica antica organizzato da A. García Ventura ("Sapienza"), C. Tavolieri (Roma Tre), L. Verderame ("Sapienza")
Migration, diversity and regional risk sharing
No full textThe economic consequences of migration have become the topic of many recent contributions in theoretical and applied economics. However, only a handful of papers have dealt with the implications of migration for risk sharing. We intend to fill in this gap in the literature by exploring the effects of migration and the ensuing cultural diversity on risk sharing in receiving economies, by using data on US states in the period 2000–2015. Our empirical results strongly suggest that migration enhances risk sharing in host economies, but non monotonically so. Moreover, cultural diversity is key in this risk sharing-enhancing effect of migration
Pseudo-Bayes factors
No full textFor eliminating nuisance parameters, recent literature indicates that non-Bayesian methods based on pseudo-likelihoods can be usefully incorporated into classical Bayesian analyses (see Ventura et al., 2009, and references therein) . This approach has the remarkable advantages of avoiding elicitation on the nuisance parameters and the computation of multidimensional integrals. In Bayesian model selection, when hypotheses involve unknown parameters, also Bayes Factors have the drawbacks of calling for priors on the nuisance parameters and integration. In this setting, it may be useful to resort to a pseudo-likelihood for the parameter of interest only in order to derive non genuine BF, called Pseudo-Bayes Factors (PBF). Here, it is of interest to study inferential properties of PBF throught illustrative examples, and to give a criterion to compare PBF with genuine BF, based on the frequentist risk function
The cutaneous cancer of Ferdinando Orsini, 5th Duke of Gravina (death in 1549)
No full textThe natural mummy of Ferdinando Orsini, Duke of Gravina in Apulia (southern Italy), dead in 1549 at about 50-55 years of age, showed the face completely covered by a veil and two small patches of cloth at the root of the nose and in the right orbit. After removal of the veil and the patches, surely a medical dressing, an extensive and destructive lesion of the right orbit and the root of the nose appeared. The lesion revealed, at macroscopic examination, complete destruction of the right and root of the left nasal bone, destruction of the medial wall of the right orbit with extensive erosion of the glabellar region and the upper third of the vomer.
X-ray examination of the facial skull showed a large, irregular loss of bone, extending from the inner corner of the right orbit, near the root of the nose, towards the frontal bone, with total involvement of the right and partial of left sinuses and the ethmoid, without any sclerotic reaction. Total body X-ray did not reveal any other osteolithic lesion.
Histology of eroded fragments of the vomer and left nasal bone showed largelacunae with clear borders, surrounded by other smaller round lacunae, destructing the normal lamellar bone, sometimes containing clusters of partially necrotic cells with solid epithelial-like aspects(Fig. 7a, b), well visible in particular inside one of the largest lacunae.The border between the bone and the underlying tissue in lacunae is clear and sharp and the brownish like-epithelial mass reveals a darker margin (looking like a palisade) and it is separated from the bone by clefting artifacts.The epithelial origin of the cells of the osteolytic lesion was confirmed by the strong positivity for pancytokeratin.
The lesion of the facial skull of Ferdinando Orsini is macroscopically and microscopically suggestive of a diagnosis of destructive basal cell carcinoma in advanced stage of evolution (Fornaciari et al., 1989; Gaeta et al., 2015).
This tumor, histologically characterizedby a front of neoplastic invasion with cells arranged in a palisade and cleft-like retraction spaces of artefactual nature, has a strong local aggressiveness and cause skin ulceration and bone destruction (hence the Latin name of ‘ulcus rodens’), without remote metastases, is also at present one of the most common malignant skin neoplasms, caused by exposure to sunlight.
Literature cited
Fornaciari G, Bruno J, Corcione N, Tornaboni D, Castagna M: Un cas de tumeur maligne primitive de la region naso-orbitairedansunemomie de la basilique de S. Domenico Maggiore à Naples (XVIe siècle); in Capasso L (ed): Advances in Paleopathology: Proceedings of the VII European Meeting of the Paleopathology Association: Lyon, September 1988. J PaleopatholMonogrPubl. Chieti, Solfanelli, 1989, pp 65–69.
Gaeta R, Ventura L, Fornaciari G: Il tumore di Ferdinando Orsini, duca di Gravina di Puglia (+1549); in Atti del 50° Congresso Nazionale della Società Italiana di Storia della Medicina, Palermo 2-4 ottobre 2014. Palermo 2015, pp. 189-194
Ventura County's Ethnic Histories
No full textNo abstract available."Ventura County’s Ethnic Histories." with F. Barajas, J. Alamillo, M. Gately, and L. Welty Tamai. Panel discussion at 110th Meeting of the Pacific Coast Branch of the American Historical Association. Los Angeles, CA, Aug 1, 2017
Outdoor ed-ventures in Ventura County
No full textAlthough there are many opportunities for outdoor learning in Ventura County, knowledge of these resources was scattered and random. This thesis-project satisfies the need to have a central location on the World Wide Web that identifies and describes outdoor educational opportunities in Ventura County. A web-site was created using informational data and color photographs gathered from fifteen outdoor excursion field trip sites in Ventura County. The excursion sites' information was categorized into four types of excursions: Agriculture, Environmental Education, Animals and History and Culture with the option to add more sites. In addition, the Contact the Site Creator page allowed for interaction and information exchange between web site visitors and the author. The Outdoor Ed-Ventures in Ventura County web site was available at www.vtusd.k12.ca.usloutdoorslindex.htm.Includes bibliographical references (leaves 105-106)California State University, Northridge. Department of Education
- …
