Election Forecasts in 1984: How Accurate Were They?

1985 ◽  
Vol 18 (01) ◽  
pp. 53-62 ◽  
Author(s):  
Michael S. Lewis-Beck

One autumn out of four, election forecasting surpasses baseball as America's national pastime. Then, everyone wants to know who will win, and everyone has a guess. Now, with the ballots carefully counted, forecasters await their awards. Below, I evaluate the quality of a wide range of 1984 presidential and congressional forecasts. The evaluation proceeds from nonscientific to scientific approaches, although this distinction is sometimes blurred. To lower the level of suspense, I should say that some forecasts turned out to be quite good. By way of conclusion, I offer a set of rules for selecting a high-quality forecasting instrument.Lucky GuessesMany popular election forecasting rules take advantage of chance, which has been working in their favor. Perhaps the most famous is the World Series forecast, which says, “If the American League wins the World Series, then the Republican presidential candidate will win.” This technique was accurate from 1952 to 1976, missed in 1980, but worked again in 1984 with the victory of the Detroit Tigers. A lesser known rule of this type, which is my personal favorite, is based on the Beaujolais wine harvest. Accordingly, “If the Beaujolais vintage looks bad, then the Republican will take the presidency.” This has held post-1960, and continues to do so with the poor 1984 crop (yielding a wine too light, with little color). There are other such rules that relate more directly to the candidates themselves and, in that sense, have more verisimilitude.

2015 ◽  
Vol 50 (3) ◽  
pp. 301-323 ◽  
Author(s):  
Özde Öztekin

AbstractThis article examines the international determinants of capital structure using a large sample of firms from 37 countries. The reliable determinants for leverage are firm size, tangibility, industry leverage, profits, and inflation. The quality of the countries’ institutions affects leverage and the adjustment speed toward target leverage in significant ways. High-quality institutions lead to faster leverage adjustments, whereas laws and traditions that safeguard debt holders relative to stockholders (e.g., more effective bankruptcy procedures and stronger creditor protection) lead to higher leverage.


2021 ◽  
Author(s):  
Jason Hunter ◽  
Mark Thyer ◽  
Dmitri Kavetski ◽  
David McInerney

<p>Probabilistic predictions provide crucial information regarding the uncertainty of hydrological predictions, which are a key input for risk-based decision-making. However, they are often excluded from hydrological modelling applications because suitable probabilistic error models can be both challenging to construct and interpret, and the quality of results are often reliant on the objective function used to calibrate the hydrological model.</p><p>We present an open-source R-package and an online web application that achieves the following two aims. Firstly, these resources are easy-to-use and accessible, so that users need not have specialised knowledge in probabilistic modelling to apply them. Secondly, the probabilistic error model that we describe provides high-quality probabilistic predictions for a wide range of commonly-used hydrological objective functions, which it is only able to do by including a new innovation that resolves a long-standing issue relating to model assumptions that previously prevented this broad application.  </p><p>We demonstrate our methods by comparing our new probabilistic error model with an existing reference error model in an empirical case study that uses 54 perennial Australian catchments, the hydrological model GR4J, 8 common objective functions and 4 performance metrics (reliability, precision, volumetric bias and errors in the flow duration curve). The existing reference error model introduces additional flow dependencies into the residual error structure when it is used with most of the study objective functions, which in turn leads to poor-quality probabilistic predictions. In contrast, the new probabilistic error model achieves high-quality probabilistic predictions for all objective functions used in this case study.</p><p>The new probabilistic error model and the open-source software and web application aims to facilitate the adoption of probabilistic predictions in the hydrological modelling community, and to improve the quality of predictions and decisions that are made using those predictions. In particular, our methods can be used to achieve high-quality probabilistic predictions from hydrological models that are calibrated with a wide range of common objective functions.</p>


Author(s):  
Mohannad Alahmadi ◽  
Peter Pocta ◽  
Hugh Melvin

Web Real-Time Communication (WebRTC) combines a set of standards and technologies to enable high-quality audio, video, and auxiliary data exchange in web browsers and mobile applications. It enables peer-to-peer multimedia sessions over IP networks without the need for additional plugins. The Opus codec, which is deployed as the default audio codec for speech and music streaming in WebRTC, supports a wide range of bitrates. This range of bitrates covers narrowband, wideband, and super-wideband up to fullband bandwidths. Users of IP-based telephony always demand high-quality audio. In addition to users’ expectation, their emotional state, content type, and many other psychological factors; network quality of service; and distortions introduced at the end terminals could determine their quality of experience. To measure the quality experienced by the end user for voice transmission service, the E-model standardized in the ITU-T Rec. G.107 (a narrowband version), ITU-T Rec. G.107.1 (a wideband version), and the most recent ITU-T Rec. G.107.2 extension for the super-wideband E-model can be used. In this work, we present a quality of experience model built on the E-model to measure the impact of coding and packet loss to assess the quality perceived by the end user in WebRTC speech applications. Based on the computed Mean Opinion Score, a real-time adaptive codec parameter switching mechanism is used to switch to the most optimum codec bitrate under the present network conditions. We present the evaluation results to show the effectiveness of the proposed approach when compared with the default codec configuration in WebRTC.


In many image processing applications, a wide range of image enhancement techniques are being proposed. Many of these techniques demanda lot of critical and advance steps, but the resultingimage perception is not satisfactory. This paper proposes a novel sharpening method which is being experimented with additional steps. In the first step, the color image is transformed into grayscale image, then edge detection process is applied using Laplacian technique. Then deduct this image from the original image. The resulting image is as expected; After performing the enhancement process,the high quality of the image can be indicated using the Tenengrad criterion. The resulting image manifested the difference in certain areas, the dimension and the depth as well. Histogram equalization technique can also be applied to change the images color.


2020 ◽  
Vol 10 (513) ◽  
pp. 197-203
Author(s):  
O. I. Garafonova ◽  
◽  
I. F. Nechai ◽  

In the world, product quality has long been one of the major instruments for ensuring the economic development of companies. Achieving high quality parameters, in turn, is an important part of the economic strategy of any success-oriented business organization. The article is aimed at developing directions for improving products of PJSC «Beer and Non-Alcoholic Plant «Radomyshl». The object of the research is the quality of beer produced by PJSC «Beer and Non-Alcoholic Plant «Radomyshl». The assessment of the quality level of the selected product in accordance with the requirements of DSTU 3888:2015 was carried out using the following groups of indicators: microbiological, organoleptic and physic-chemical. The process of assessing the product quality parameters is presented, which consists of seven consecutive stages and is carried out throughout the product life cycle. The factors under the influence of which the quality of products are formed and which may cause deviation from the specified quality parameters are analyzed and structured. The defects that appear due to these factors have been identified. The basis for improving the quality of products is primarily a thorough study of changes in demand for the business organization products. Three groups of measures are singled out, with the help of which one can achieve the desired level of product quality, namely: technological, organizational and socio-economic. A complex of priority measures to improve the quality of products of PJSC «Beer and Non-Alcoholic Plant «Radomyshl» is proposed. The element of scientific novelty is the development of an algorithm for the implementation of measures to improve the quality of products. During the implementation of measures to improve the quality, it is necessary to carry out systematic monitoring and generate reports on the implementation of the project in order to make possible an adjustment of the final result.


2009 ◽  
Vol 2 (2) ◽  
pp. 158-166 ◽  
Author(s):  
Juan Carlos Jaramillo Estrada

Born in the late nineteenth century, within the positivist paradigm, psychology has made important developments that have allowed its recognition in academia and labor. However, contextual issues have transformed the way we conceptualize reality, the world and man, perhaps in response to the poor capacity of the inherited paradigm to ensure quality of life and welfare of human beings. This has led to the birth and recognition of new paradigms, including complex epistemology, in various fields of the sphere of knowledge, which include the subjectivity, uncertainty, relativity of knowledge, conflict, the inclusion of "the observed" as an active part of the interventions and the relativity of a single knowable reality to move to co-constructed realities. It is proposed an approach to the identity consequences for a psychology based on complex epistemology, and the possible differences and relations with psychology, traditionally considered.


Equilibrium ◽  
2013 ◽  
Vol 8 (2) ◽  
pp. 101-113
Author(s):  
Wiktor Morohin ◽  
Aleksandrs Rubanovskis

The quality of the workforce is a precondition for economic growth of a society. One of the main indicators of these preconditions is education. The effectiveness of economies of developed countries is based on the high quality of knowledge. As a resutl the quality and balanced education determines the rating of a state in the world and serves as a driving force of national economic development. The aim of the article is to identify opportunities that will allow integrating the balanced education in the educational systems of the national economy.


2021 ◽  
pp. 59-63
Author(s):  
А.Н. Жарылқасын ◽  
А. Жунусов ◽  
К.Д. Шертаева ◽  
Г.Ж. Умурзахова ◽  
Г.И. Утегенова ◽  
...  

В условиях серьезной конкуренции аптеки вынуждены прибегать к различным способам привлечения и удержания покупателей. Приоритетными факторами в плане воспитания и поддержания лояльности покупателей являются традиционный набор приемлемых цен, широкий ассортимент, высокое качество лекарственных средств, космецевтики и изделий медицинского назначения, а также удобное расположение аптеки и выкладка аптечных товаров. Однако сегодня это обязательные, но недостаточные атрибуты приверженности покупателей к конкретной аптеке. В данной статье рассматриваются основные элементы "искусства продаж", которые, по мнению экспертов, являются основополагающими для мотивации покупок в аптеке. In the face of serious competition, pharmacies have to resort to various means of attracting and retaining customers. Priority factors in terms of cultivating and maintaining customer loyalty are the traditional set of acceptable prices, wide range, high quality of pharmaceuticals, cosmeceuticals and medical products, as well as the convenient location of the pharmacy and the display of pharmacy products. However, today these are mandatory, but not sufficient attributes of customer commitment to a particular pharmacy. This article discusses the main elements of the "art of sales", which, according to experts, are fundamental for motivating purchases in a pharmacy.


Author(s):  
Yu. A. Zolotukhin ◽  
N. S. Andreichikov ◽  
A. Ya. Eremin ◽  
T. F. Kraskovskaya ◽  
V. V. Kuprygin

Coal raw material base of coking is the main factor characterizing the quality of coke. Therefore, it is very important to know technological properties and peculiarities of coals behavior in a charge during coking process for coals charge batching and coke quality control. One of the priority directions in study coals and charges is petrographic and reflectogram analysis, which enable to obtain data related to evaluation genuine (one-valued) technological properties of coals, coal blends and charges at production of coke of required quality. Using a broad material of study, including the one carried out by the authors of the article, a wide range of application of reflectogram analysis of coals, coals blends and charges in the coking production was shown. It was demonstrated also that application of the analysis enabled to exclude the problem of “twins”, to define the degree of genetic coals recoverability and coals grades or types relation in the mixtures for the coking. Based on the elaborated by the authors reflectogram criteria of charges for coking, a strategy of coals batching was proposed, which ensures production of metallurgical coke of required and high quality and safe running of coke ovens. Based on wide experimental studies of plastic-tough properties of coal charges, porosity of coke, its X-ray structure characteristics, strength and reaction ability, theoretical ideas were formed about mechanism of interaction in a charge of petrographically nonuniform coals comprising it during coking process, by using the proposed by the authors indices of coals nonuniformity. The indices of coals, comprising the charge, nonuniformity, differ by metamorphism degree (σR) and petrographic composition (σСК), explaining regularities of forming of quality of coke from the charge with participation of petrographically nonuniform coals. The package of the factors noted by the authors, revealed in the process of the study of coals, coals blends and charges, as well as quality of coke obtained from them, enabled to elaborate a complex index of charges coking ability (К.п.к.Vo), which enables to considerably simplify the mathematical model of coke quality prediction and to increase its reliability. Mathematical models of coke quality prediction were verified and implemented at several plants of Russia.


Author(s):  
Elena Kazakova

The practice of working with business cases contradicts all basic school education organizations' canons. Judge for yourself: the authors of the cases do not know initially how to solve them. They often do not even guess which methods they should use to do so. Moreover, they are not always sure that they formulate the problem correctly. However, students for some reason find such problems to be the most interesting to solve. The middle adolescence is the age when young people are in search of themselves. Therefore, these cases, dictated by the chaos of a changing life, serve as a real window to the world of future destiny for them. The chapter will consider the process of selecting enterprises that can become the authors of cases, reveal the stages of case creation, describe the problems that the designers of cases are faced with, analyze in detail the experience of organizing the educational process based on cases with schoolchildren, and provide examples of high quality scientific and technological cases.


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