Still No Jetpacks or Gender Parity: Animated Film from 1980 through 2016

This study examines the gender ratio of characters in the 150 top-grossing full-length animated films from 1980 through 2016. Results show that males hold an overwhelming majority of both central and auxiliary roles. Male characters fill significantly more of the lead or protagonist roles, the speaking roles, the members of the protagonist’s main gang, and the film’s titles. No significant change has occurred over the years (1980–2016) to alter the gender balance; however, an increase in female authors and screenwriters corresponds with an increase in female characters in all of these roles. The underrepresentation of female characters in animated films exemplifies the ways in which popular media reflects and reproduces social inequality

The monic integer transfinite diameter

We study the problem of finding nonconstant monic integer polynomials, normalized by their degree, with small supremum on an interval I. The monic integer transfinite diameter t_M(I) is defined as the infimum of all such supremums. We show that if I has length 1 then t_M(I) = 1/2. We make three general conjectures relating to the value of t_M(I) for intervals I of length less that 4. We also conjecture a value for t_M([0, b]) where 0 < b < 1. We give some partial results, as well as computational evidence, to support these conjectures. We define two functions that measure properties of the lengths of intervals I with t_M(I) on either side of t. Upper and lower bounds are given for these functions. We also consider the problem of determining t_M(I) when I is a Farey interval. We prove that a conjecture of Borwein, Pinner and Pritsker concerning this value is true for an infinite family of Farey intervals.Comment: 32 pages, 5 figure

On univoque Pisot numbers

We study Pisot numbers $\beta \in (1, 2)$ which are univoque, i.e., such that there exists only one representation of 1 as $1 = \sum_{n \geq 1} s_n\beta^{-n}$, with $s_n \in \{0, 1\}$. We prove in particular that there exists a smallest univoque Pisot number, which has degree 14. Furthermore we give the smallest limit point of the set of univoque Pisot numbers.Comment: Accepted by Mathematics of COmputatio

Conceptual design of thermal energy storage systems for near term electric utility applications. Volume 2: Appendices - screening of concepts

Volume 2 of this 2 volume report is represented. This volume contains three appendices: (1) bibliography and cross references; (2) taxonomy - proponents and sources; and (3) concept definitions

Conceptual design of thermal energy storage systems for near term electric utility applications. Volume 1: Screening of concepts

Over forty thermal energy storage (TES) concepts gathered from the literature and personal contacts were studied for their suitability for the electric utility application of storing energy off-peak discharge during peak hours. Twelve selections were derived from the concepts for screening; they used as storage media high temperature water (HTW), hot oil, molten salts, and packed beds of solids such as rock. HTW required pressure containment by prestressed cast-iron or concrete vessels, or lined underground cavities. Both steam generation from storage and feedwater heating from storage were studied. Four choices were made for further study during the project. Economic comparison by electric utility standard cost practices, and near-term availability (low technical risk) were principal criteria but suitability for utility use, conservation potential, and environmental hazards were considered

An eight-month climatology of marine stratocumulus cloud fraction, albedo, and integrated liquid water

As part of the FIRE/Extended Time Observations (ETO) program, extended time observations were made at San Nicolas Island (SNI) from March to October, 1987. Hourly averages of air temperature, relative humidity, wind speed and direction, solar irradiance, and downward longwave irradiance were recorded. The radiation sensors were standard Eppley pyranometers (shortwave) and pyrgeometers (longwave). The SNI data were processed in several ways to deduce properties of the stratocumulus covered marine boundary layer (MBL). For example, from the temperature and humidity the lifting condensation level, which is an estimate of the height of the cloud bottom, can be computed. A combination of longwave irradiance statistics can be used to estimate fractional cloud cover. An analysis technique used to estimate the integrated cloud liquid water content (W) and the cloud albedo from the measured solar irradiance is also described. In this approach, the cloud transmittance is computed by dividing the irradiance measured at some time by a clear sky value obtained at the same hour on a cloudless day. From the transmittance and the zenith angle, values of cloud albedo and W are computed using the radiative transfer parameterizations of Stephens (1978). These analysis algorithms were evaluated with 17 days of simultaneous and colocated mm-wave (20.6 and 31.65 GHz) radiometer measurements of W and lidar ceilometer measurements of cloud fraction and cloudbase height made during the FIRE IFO. The algorithms are then applied to the entire data set to produce a climatology of these cloud properties for the eight month period

Stress and strain rate analysis of the FT4 Powder Rheometer

The Freeman FT4 Powder Rheometer has been reported to describe well the powder flow behaviour in instances where other techniques fail. We use DEM to simulate the FT4 operation for slightly cohesive large glass beads at a range of strain rates. The curved impeller is shown to be beneficial in comparison to a flat blade as the variation of shear stress across the blade is reduced. The shear stress in front of the blade correlates well with flow energy (which the device measures) for a range of tip speeds and is shown to increase approximately linearly with tip speed when operating beyond the quasi-static regime

Study of the distribution of the bronchial tree, the pulmonary artery and the pulmonary vein in the lungs of the sheep

1) A description of the early development of the bronchial tree in the sheep is given based on the findings of Nicolas and Dimitrova (1897) and d'Hardiviller (1897) in the sheep, and of Flint (1906) in the pig. In the summary of the findings the nomenclature used in the description of the adult bronchial tree is substituted for that used by these workers. 2) The findings of Flint (1906) on the early development of the pulmonary artery and vein in the pig are recorded, because it is thought that, with certain exceptions, these vessels will follow similar lines of development in the sheep. 3) The external appearance of the lungs is described. The term "pulmonary lobe" is defined, and based on this definition the right lung is divided into four lobes, an apical, a cardiac, an intermediate and a diaphragmatic, and the left lung is divided into two lobes, an apical -cardiac and a diaphragmatic. 4) An analysis is made of the variations which occurred in the external form of the lobes in the lungs of one hundred and fifty sheep, and possible explanations for these variations are suggested. 5) The number of subdivisions of the bronchial tree which occur between a segmental bronchus and a respiratory bronchiole are recorded in the case of three segments. The number of bronchial generations is found to be about sixteen and the number of bronchiolar generations about fifteen. 6) The broncho-pulmonary segments are described following a survey of the lungs of fifteen sheep; the right lung is found to consist of twelve segments and the left lung of eight segments. The basic international nomenclature accepted by the Thoracic Society for the human lung is adopted whenever possible. 7) Following a survey of the lungs of fifty sheep, the main branches of the bronchial tree are described, with attention to the areas which they ventilate. 8) The large branches of the pulmonary arteries are described, following a study of the lungs of fifteen sheep, with reference to the areas of the lung which they supply, and their relations to the bronchi are given. 9) The main tributaries of the pulmonary veins are described with attention to the areas which they drain. They were studied in the lungs of thirteen sheep. 10) A short discussion on the importance of a well defined pulmonary terminology is included