242 research outputs found
Francisci Redi patricii Aretini, Opusculorum pars prior, sive, Experimenta circa generationem insectorum : accedit J. Frid. Lachmund, De ave diomedea dissertatio.
No full textIncludes indexes.Paging, v. 1: [12], 216, [20], 40, [8] p. (last 2 blank), [45] leaves of plates (19 folded); v. 2: [8], 312, [32] p., [12] leaves of plates (10 folded).Getty copy lacks M12, v. 1 (blank).Signatures, v. 1: *⁶ A-I¹² K¹⁰ L-M¹². Vol. 2: pi⁴ A-O¹² P⁴.Frontispiece of v. 1 signed by Romeyn de Hooghe and dated 1670. That of v. 2 signed by Cornelis Decker. Some in-text engravings in addition to plates. Woodcut device on both t.p.'s.Edition statement from p. [12] of 1st sequence, v. 1. Previously published Amsterdam, 1671. Esperienze intorno alla generazione degli insetti first published Florence, 1668.T.p. of v. 1 has date 1686, that of v. 2 has 1685. Title on t.p., v. 2: Francisci Redi nobilis Aretini Experimenta circa varias res naturales, speciatim illas quae ex Indiis afferuntur."Elenchus authorum, quo hoc tractatu citantur vel illustrantur"--K1r-K3v, v. 1.v. 1. Experimenta circa generationem insectorum. Accedit appendicis loco: J.F. Lachmund De ave diomedea dissertatio. -- v. 2. Experimenta circa varias res naturales, speciatim illas quae ex Indiis afferuntur -- Observationes de viperis -- Epistola de quibusdam objectionibus contra suas de viperis observationes -- Observationes circa illas guttulas & fila ex vitro, quae rupta in quaecunque sui parte, dissiliunt & comminuuntur.Mode of access: Internet.Gift inscription on front pastedown to the botanist MichelAngiolo Tilli, dated 1726. Gift inscription of William Holmes to Alexander John.(?) Smith on front free endpaper. Signature of J.S. Albrecht on both t.p.'s; that on t.p. of v. 1 lined out in favor of "Etlinger." Ownership inscription of Lisa & Leonard Baskin on back pastedown, with Baskin's initial L written before signature letter B of 1st sequence, and with his printed labels for Fort Hill and Lurley Manor on front pastedown.Bound in 1 vol. in vellum. Author & title written at head of spine. Edges red
Harnessing high altitude solar power
No full textAs an intermediate solution between Glaser's satellite solar power (SSP) and ground-based photovoltaic (PV) panels, this paper examines the collection of solar energy using a high-altitude aerostatic platform. A procedure to calculate the irradiance in the medium/high troposphere, based on experimental data, is described. The results show that here a PV system could collect about four to six times the energy collected by a typical U.K.-based ground installation, and between one-third and half of the total energy the same system would collect if supported by a geostationary satellite (SSP). The concept of the aerostat for solar power generation is then briefly described together with the equations that link its main engineering parameters/variables. A preliminary sizing of a facility stationed at 6 km altitude and its costing, based on realistic values of the input engineering parameters, is then presented
REDI for Binned Data: A Random Empirical Distribution Imputation Method for Estimating Continuous Incomes
No full textResearchers often need to work with categorical income data. The typical nonparametric (including midpoint) and parametric estimation methods used to estimate summary statistics both have advantages, but they carry assumptions that cause them to deviate in important ways from real-world income distributions. The method introduced here, random empirical distribution imputation (REDI), imputes discrete observations using binned income data, while also calculating summary statistics. REDI achieves this through random cold-deck imputation from a real-world reference data set (demonstrated here using the Current Population Survey Annual Social and Economic Supplement). This method can be used to reconcile bins between data sets or across years and handle top incomes. REDI has other advantages for computing values of an income distribution that is nonparametric, bin consistent, area and variance preserving, continuous, and computationally fast. The author provides proof of concept using two years of the American Community Survey. The method is available as the redi command for Stata
REDI for Binned Data: A Random Empirical Distribution Imputation method for estimating continuous incomes
No full textPublished in Sociological Methodology. Researchers often need to work with categorical income data. The typical nonparametric (including midpoint) and parametric estimation methods used to estimate summary statistics both have advantages, but they carry assumptions that cause them to deviate in important ways from real-world income distributions. The method introduced here, random empirical distribution imputation (REDI), imputes discrete observations using binned income data, while also calculating summary statistics. REDI achieves this through random cold-deck imputation from a real-world reference data set (demonstrated here using the Current Population Survey Annual Social and Economic Supplement). This method can be used to reconcile bins between data sets or across years and handle top incomes. REDI has other advantages for computing values of an income distribution that is nonparametric, bin consistent, area and variance preserving, continuous, and computationally fast. The author provides proof of concept using two years of the American Community Survey. The method is available as the redi command for Stata
Investigation of the RESURF Dielectric Inserted (REDI) LDMOS as a novel Silicon-based RF Power Device
No full textIn this paper, a novel power device named as RESURF Dielectric Inserted (REDI) LDMOS is put forward. It is fully compatible with standard CMOS technology, which can sharply reduce the cost. In this novel REDI LDMOS, a RESURF structure and a dielectric region are inserted at the suitable position of the drift region to reconstruct the electric field and the electric potential distributions of the channel region and the drift region, which can effectively reduce the peak electric field and increase the breakdown voltage. The impacts of key device parameters on REDI LDMOS behaviors are comprehensively studied with device simulation tools. The structural parameters are optimized to obtain acceptable high breakdown voltage (> 10V), excellent on-state behavior and high frequency performance (> 10GHz).http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000265971000049&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Engineering, Electrical & ElectronicPhysics, AppliedEICPCI-S(ISTP)
Supporting visual quality assessment with machine learning
No full textObjective metrics for visual quality assessment often base their reliability on the explicit modeling of the highly non-linear behavior of human perception; as a result, they may be complex and computationally expensive. Conversely, machine learning (ML) paradigms allow to tackle the quality assessment task from a different perspective, as the eventual goal is to mimic quality perception instead of designing an explicit model the human visual system. Several studies already proved the ability of ML-based approaches to address visual quality assessment; nevertheless, these paradigms are highly prone to overfitting, and their overall reliability may be questionable. In fact, a prerequisite for successfully using ML in modeling perceptual mechanisms is a profound understanding of the advantages and limitations that characterize learning machines. This paper illustrates and exemplifies the good practices to be followed.Intelligent SystemsElectrical Engineering, Mathematics and Computer Scienc
As diferentes concepções de Francesco Redi (1628-1698) sobre a geração animal e tradução de excertos de Experiências sobre a geração de insetos
No full textEsta pesquisa é composta de duas unidades coordenadas entre si: a tradução para o português de excertos do livro Experiências sobre a geração de insetos, de Francesco Redi (1626-1698), precedida de análise das posições do autor sobre a geração animal. Os trechos traduzidos e a análise empreendida mostram que Redi além de reconhecer que o aparecimento de larvas sobre alimentos era decorrente de reprodução sexual nas moscas, considerou a existência de um tipo intermediário de geração espontânea, que ocorreria no interior de plantas e animais vivos, a partir de uma certa “alma” ou “virtude”. Além de considerações sobre o trabalho de tradução, o artigo contextualiza a obra de Francesco Redi, destacando o seu papel no desenvolvimento das observações e experimentos com seres vivos nas fases iniciais das ciências modernas.
This research is composed of two units coordinated among themselves: the translation into Portuguese of excerpts from the book Experiments on the generation of insects, by Francesco Redi (1626-1698), preceded by an analysis of the author\u27s positions on the animal generation. The translated excerpts and the analysis carried out show that Redi, in addition to recognizing that the appearance of larvae on food was due to sexual reproduction in the flies, considered the existence of an intermediate type of spontaneous generation that would occur inside plants and live animals, from a certain "soul" or "virtue". In addition to considerations on the work of translation, the article contextualizes the work of Francesco Redi, highlighting his role in the development of observations and experiments with living beings in the early stages of the modern science
STUDI KASUS SISTEM LAMPU LALU LINTAS PERSIMPANGAN MENGGUNAKAN METODE ADAPTIF NEURO FUZZY
No full textPengaturan Lampu Lalu Lintas yang ada di Indonesia saat ini menggunakan sistem pengaturan yang statis (menggunakan sistem Fixed Time Signal) tanpa memperhatikan naik turunnya arus lalu lintas. Kemacetan menjadi permasalahan di berbagai wilayah, terutama di kota-kota besar. Kota Jakarta sebagai pusat pemerintahan dan pusat perekonomian terbesar di Indonesia memiliki kegiatan yang tinggi, namun kurang didukung dengan prasarana dan sikap pengguna jalan kurang disiplin, salah satu permasalahan yang timbul adalah pada persimpangan. Permasalahan ini tidak mudah untuk diatasi karena semakin hari pertumbuhan populasi kendaraan semakin bertambah.Untuk itu dibutuhkan pengaturan lampu lalu lintas yang optimal dan efektif, dengan menggunakan sistem Fuzzy Logic. Dengan metode Fuzzy Logic pada sistem transportasi dapat mengefisienkan waktu nyala lampu lalu lintas berdasarkan tingkat kepadatan suatu persimpangan jalan. Ciri utama dari sistem ini adalah cocok untuk logika berfikir yang tidak pasti khususnya untuk sistem yang sulit dimodelkan secara matematika dan sistem ini membolehkan pengambilan keputusan dengan nilai pemikiran atau berdasarkan informasi yang tidak lengkap atau tidak pasti.Variabel input sistem ini yaitu tingkat kepadatan lalu lintas dan variabel output dari sistem ini adalah durasi waktu nyala lampu hijau. Hasil dari penelitian menunjukkan metode Adaptif Neuro Fuzzy memberikan perhitungan waktu lampu yang lebih optimal dibandingkan metode statis (durasi tetap). Kata Kunci : fuzzy logic, sistem lampu lalu lintas, persimpangan, tingkat kepadatan, duras
Exploring economic empowerment and marginalization using data from developing countries
No full textThe Poverty Action Center is engaged in several ongoing data analyses to answer questions at the forefront of applied economics globally. Our Nepal team is examining links between migration and social mobility through the lens of caste/ethnicity and wealth accumulation using micro-data from the World Bank. This research contributes to understanding whether international migration allows marginalized groups to bypass labor market discrimination at home to advance economically. Our Haiti team is studying the effects of water, sanitation, and hygiene (WASH) on measures of women's empowerment (e.g., economic independence and decision-making) to link to the United Nation's Sustainable Development Goals of clean water and sanitation, good health and well-being, and gender equality. Our Ethiopia group is examining how water infrastructure and access in Ethiopia influences individual time use disaggregated by gender
Comparing subjective image quality measurement methods for the creation of public databases
No full textMan-Machine InteractionElectrical Engineering, Mathematics and Computer Scienc
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