Differential instructional productivity indices

1983 ◽  
Vol 18 (2) ◽  
pp. 179-193 ◽  
Author(s):  
Allan M. Bloom
Keyword(s):  
2019 ◽  
Vol 1 (1) ◽  
Author(s):  
Alan Todhunter ◽  
◽  
Mark Crowley ◽  
Farid Sartipi ◽  
◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Marylene de Brito Arduino

The control of dengue relies on the elimination of vector breeding sites. This study identified the container categories most productive for A. aegypti within the framework of the São Paulo dengue vector control program (DVCP) in São Sebastião, a large city located on the state’s coast where dengue cases have occurred since 2001. Containers were inspected monthly for the occurrence of mosquito immature stages during two consecutive vector-breeding seasons in 2002–2004. Containers were classified by their material, use, and fixed or removable status. Pupal productivity differed significantly among container types, items made of metal and plastic, and boats being those with the highest relative contribution. Significant correlations between traditional indices of A. aegypti abundance (Container Index, House Index, and Breteau Index) and pupal productivity/demographic indices (Pupae/Container, Pupae/House, Pupae/ha, and Pupae/Person) ranged 0.56–0.65; correlations were not statistically significant for any combination involving the Pupae/Container index. The assessment of pupal productivity indices could be incorporated into the DVCP without any additional operational onus, allowing vector control managers to determine appropriate control actions targeting the most productive containers and sites. Further studies are needed to assess whether pupal productivity indices may be used as epidemiological indicators of risk of dengue transmission.


Author(s):  
Ф. М. Парій ◽  
М. П. Андрощук ◽  
С. Г. Труш

Вивчення батьківських компонентів є важливимнапрямом досліджень. Використання в якості ма-теринської форми лінії ЧС 94 дозволяє створюва-ти гетерозисні гібриди з високим рівнем продук-тивності. Авторами вивчено вплив поліпшеної закомплексом селекційно-генетичних ознак стериль-ної лінії на прояв господарськи цінних ознак устворених гібридів цукрових буряків. Проведеновипробування отриманих гібридів та оціненопоказники їх продуктивності. Лінію ЧС 94рекомендовано залучати до селекційного процесу зформування високопродуктивних гібридів буряківцукрових нового покоління. Studying of parent components is an important direction for research. Using МС 94 line as a mother form makes it possible to create geterosis hybrids with high productivity. The authors investigated the influence of the improved in the complex of selection-genetic features sterile line as to their commercially valuablecharacteristics in the process of creating sugar beet hybrids. Testing of the received hybrids was conducted and their productivity indices were evaluated. MС 94 line is recommended to be involved in the selection process for the formation of highly productive sugar beet hybrids of new generation.


2021 ◽  
Vol 45 ◽  
Author(s):  
Eustáquio Souza Dias ◽  
Diego Cunha Zied ◽  
Arturo Pardo-Gimenez

ABSTRACT The cultivation of button mushroom has reached a high technological level in developed countries and is associated with high productivity indices. This technological level involves not only compost production and crop management but also the casing layer. Peat has been established as one of the most appropriate casing materials for the cultivation of button mushroom due to its excellent properties. However, good-quality peat is not available in all countries, and peat is not renewable, which reinforces the need for alternative materials. Therefore, studies on the casing layer should include its response to the induction of fruiting since this stage is where the main changes that lead to the formation of primordia occur. This review addresses the different aspects of fruiting induction of Agaricus mushrooms and the influence of the characteristics of the casing layer on mushroom production.


2003 ◽  
Vol 55 (4) ◽  
pp. 391-405 ◽  
Author(s):  
Jean-Philippe Boussemart ◽  
Walter Briec ◽  
Kristiaan Kerstens ◽  
Jean-Christophe Poutineau

Author(s):  
Carlos J. Navarrete ◽  
James B. Pick

This chapter examines the relationship between IT expenditure and bank profitability, efficiency, productivity, and performance for Mexican banks. The principal research method is correlation analysis between IT expenditure and four bank performance indices: a profitability index that combines bank profits, income, operational cost, and financial cost; a performance index that includes credit and bank income market share; a productivity index consisting of the number of employees, branches, and managers; and an efficiency index that includes banks’ operational cost and income. The unit of analysis is the firm. The data are from the 18 banks comprising the Mexican banking industry from 1982–1992, when Mexico’s banks were owned by the federal government. The study’s interpretations are supported by interviews with four bank CIOs and a CEO, in office during the period. The main findings are that bank IT expenditure ratio is positively correlated to bank performance and productivity indices, whereas IT expenditure is not correlated with bank efficiency or profitability indices. There are fluctuations in the strength of correlation during the 11-year period, which are explained. The chapter results not only reject the productivity paradox but also provide insights to explain the paradox and IT contribution to the firm performance.


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