Barley stripe mosaic virus (stripe mosaic of barley).

2021 ◽  
Author(s):  
Malgorzata Jezewska
Keyword(s):  
North Dakota ◽  
Mosaic Virus ◽  
Total Loss ◽  
Barley Stripe Mosaic Virus ◽  
Economic Significance ◽  
The Usa ◽  
The Impact

Abstract In the USA, BSMV has been economically significant only in Montana and North Dakota (Carroll, 1983). Between 1953 and 1970 the total loss in barley caused by this virus was calculated at more than US$ 30 million. In 1964 the virus caused damage estimated at over US$ 3.1 million (Carroll, 1980). Yield reductions in barley were 24-46% when BSMV was inoculated mechanically (Chiko and Barker, 1978; Carroll, 1980). In most states of the USA and also in most other countries where it occurs, the economic significance of BSMV has decreased (Carroll, 1983). For further information, see Carroll (1986). The impact of mild strains of BSMV on barley yield is substantially lower (Jezewska, 2006).

Institutional barriers to productive public-sector entrepreneurship

2018 ◽  
Vol 7 (4) ◽  
pp. 306-319 ◽  
Author(s):  
Brian Strow ◽  
Claudia Strow
Keyword(s):  
Public Sector ◽  
Credit Rating ◽  
Optimal Level ◽  
Barriers To Entry ◽  
Content Type ◽  
Practical Applications ◽  
Economic Significance ◽  
The Usa ◽  
The Impact ◽  
Public Sector Entrepreneurship

Purpose The purpose of this paper is to outline barriers to public-sector entrepreneurship and explore the impact of those barriers on population shifts within the USA. Design/methodology/approach This paper lays out five specific barriers to public-sector entrepreneurship: barriers to entry and exit for consumers and producers, increased centralization and concentration in government, the lack of residual claim amongst public-sector actors, the rise of public-sector union membership and increasingly uncompetitive elections. The paper then assesses the impact of each of these barriers on population and production changes within the USA from 2010 to 2017. Findings Those state governments with limited barriers for productive public-sector entrepreneurship are rewarded with faster growing populations. Specifically, states with higher incomes, less centralized spending, lower public-sector unionization rates and higher state credit ratings tend to experience the greatest levels of population growth. States with less centralized spending also experience the largest increases in gross state product per capita. Practical implications This paper offers practical applications for policy makers wishing to increase their tax bases, increase the standard of living for their constituents or increase the efficiency in production and distribution of government goods and services. In particular, this paper offers evidence that an improved credit rating carries the most economic significance for population gains. Originality/value To the best of the authors’ knowledge, this is the first paper to examine Tiebout effects from barriers to public-sector entrepreneurship in the USA. Researchers in fields including political science, economics, management and public policy have all contributed to our understanding of public entrepreneurship. And yet, there are still numerous barriers preventing productive public-sector entrepreneurship from occurring at an optimal level.

ECONOMIC SIGNIFICANCE OF BARLEY STRIPE MOSAIC VIRUS IN THE CANADIAN PRAIRIES

1978 ◽  
Vol 58 (2) ◽  
pp. 331-340 ◽  
Author(s):  
ARTHUR W. CHIKO ◽  
R. J. BAKER
Keyword(s):  
Mosaic Virus ◽  
Survey Data ◽  
Seed Yield ◽  
Barley Stripe Mosaic Virus ◽  
Yield Losses ◽  
Canadian Prairies ◽  
Economic Significance ◽  
Southern Alberta ◽  
Hordeum Distichum ◽  
Symptomless Infection

A method is described by which losses in seed yield due to barley stripe mosaic virus (BSMV) in commercially grown two-row barley (Hordeum distichum L. emend. Lam.) in the Canadian prairies were estimated. Commercial loss estimates were based on previously obtained survey data on the incidence of barley stripe mosaic (BSM) and experimentally determined yield losses for three cultivars of two-row barley inoculated with BSMV at the tillering stage. Based on studies conducted in several fields, a correction factor (1.5 × % plants with BSM symptoms) was used to account for probable symptomless infection by BSMV in surveyed fields examined at the tillering and jointing stages. Using this method, it was estimated that BSMV infection of two-row barley in southeastern Manitoba and southern Alberta accounted for combined yield losses of approximately 7,600 t (equivalent to about $0.8 million) in both 1974 and 1975. The possible nature of symptomless infection by BSMV is discussed.

Economic Significance of Social Capital

2011 ◽  
pp. 46-65 ◽  
Author(s):  
L. Polishchuk ◽  
R. Menyashev
Keyword(s):  
Social Capital ◽  
Collective Action ◽  
Common Good ◽  
Economic Conditions ◽  
Formal Institutions ◽  
Transmission Channels ◽  
Economic Significance ◽  
Bonding And Bridging ◽  
The Impact

The paper deals with economics of social capital which is defined as the capacity of society for collective action in pursuit of common good. Particular attention is paid to the interaction between social capital and formal institutions, and the impact of social capital on government efficiency. Structure of social capital and the dichotomy between its bonding and bridging forms are analyzed. Social capital measurement, its economic payoff, and transmission channels between social capital and economic outcomes are discussed. In the concluding section of the paper we summarize the results of our analysis of the role of social capital in economic conditions and welfare of Russian cities.

THE IMPACT OF MINERAL FERTILIZERS ON THE BIOLOGICAL YIELD OF SUGAR BEET CROP (BETA VULGARIS L. VAR. SACCHARIFERA)

2018 ◽  
Vol 28 (4) ◽  
pp. 1281-1284
Author(s):  
Petar Petrov ◽  
Bojan Mitrovski
Keyword(s):  
Sugar Beet ◽  
Field Trials ◽  
Mineral Fertilizers ◽  
Qualitative Properties ◽  
New Production ◽  
Economic Significance ◽  
Random Block ◽  
Biological Yield ◽  
Sugar Beet Crop ◽  
The Impact

Due to the great economic significance of the sugar beet, the new production trends are aimed at improving the quantitative and qualitative properties and one of the basic agro technical measures that is directly dependent on the yield and quality of the turnip is the properly conducted plant nutrition. Exporting high quantities of nutrients from the soil, the sugar beet requires application of advanced agro-technology, primarily application of adequate and controlled nutrition and irrigation. Application of this measure, in combination with soil processing, has sustained influence over the following cultures in the crop rotation in terms of nutrients regiment and fight against weeds.In order to determine the effects of mineral fertilizers on sugar beet, field experiment was conducted on fluvisol soil. The experiment is set according to a random block system, following the standard methods of agricultural chemistry for conducting field trials. The experiment includes eight variants, as follows: 1. Control (non-fertilized), 2. NP, 3. NK, 4. PK, 5. NPK, 6. N2PK, 7. N2P2K, 8. N3PK.In the phase of technological maturity of sugar beet, collection of the vegetative material and measurement of the height of the biological yield of the turnips was carried out. Based on the survey results, it can be concluded that the variant N2P2K has achieved the highest yield of swollen roots, i.e. 69.330 kg/ha. The highest yield of leafy greens was achieved in the variant N3PK, i.e. 41.920 kg/ha, which indicates the fact that nitrogen has direct influence over the vegetation mass of sugar beet.

SCENARIOS FOR AN EXPANDING DEMAND OF TOURISM ON THE COASTS OF CUBA

2017 ◽  
Author(s):  
Oscar Gutiérrez-Bolívar ◽  
Oscar Gutiérrez-Bolívar ◽  
Pedro Fernández Carrasco ◽  
Pedro Fernández Carrasco
Keyword(s):  
United States ◽  
The Other ◽  
Sudden Increase ◽  
Tourist Destination ◽  
Other Hand ◽  
The Usa ◽  
The Impact

The opening of relationships between United States and Cuba could be a drive for a huge increase in the affluence of tourism to Cuba and especially to the coast areas. Cuba has been for many years an important tourist destination for people from many countries, but almost forbidden for US citizens. The proximity of the USA, its amount of population as well as their great acquisition power will increase in a very substantial way the demand for accommodation and other uses in the proximity of the coasts. There will be a need to implement a package of measures that reduce the impact of such sudden increase in the coastal line. On the other hand that augment in tourism could be an opportunity to improve the standard of life of Cubans. The consideration of different possibilities of such development, the analysis of the damages that each one could cause as well as the measures that could avoid, ameliorate or compensate such effects are the goals that are going to be presented in this paper.

Socio-Technological Aspects of Automation in Public Works Activities

1987 ◽  
Vol 19 (3-4) ◽  
pp. 633-643
Author(s):  
William F. Garber
Keyword(s):  
Industrial Revolution ◽  
Work Force ◽  
Public Works ◽  
Human Society ◽  
Training Problem ◽  
Total Employment ◽  
The Usa ◽  
History Of ◽  
Complete Automation ◽  
The Impact

The history of human society is replete with examples of advances in technology overrunning the ability of societal organizations to efficiently handle the resulting massive societal dislocations. The social impacts of the “Industrial Revolution of the 18th and 19th Centuries” illustrate how profound such effects can be. The automation-computer-robotics revolution now underway also has the potential for serious societal changes. In this regard public works activities are subject to increasing amounts of automation with impacts upon current and net total employment and training needs. To evaluate the present status of automation in the USA, questionnaires were sent to public works authorities in 110 cities or agencies. The current degree of automation, the impact upon employment and the skills now needed by public works employers were queried. It was found that in most cases automation was just starting; but that as complete automation as was possible was inevitable given the increasing complexity of the tasks, the demands of the public and the long term prospects for public works funding. In many cases the candidates now in the work force were not properly trained for automation needs. Retraining and changes in the educational system appeared necessary if the employees now needed were to be continuously available. Public works management as well as several labor organizations appeared to be aware of this need and were organizing to handle the training problem and the changes in employment qualifications now necessary. It appeared to be a consensus that the larger societal effects of automation should be handled by society as a whole.

scholarly journals Crisis Management in Higher Education in the Time of Covid-19: The Case of Actor Training

2021 ◽  
Vol 11 (3) ◽  
pp. 132
Author(s):  
Anna McNamara
Keyword(s):  
Higher Education ◽  
Crisis Management ◽  
High Frequency ◽  
High Reliability ◽  
Actor Training ◽  
Management Actions ◽  
The Usa ◽  
The Uk ◽  
The Impact ◽  
High Frequency Words

The impact of Covid-19 placed Higher Education leadership in a state of crisis management, where decision making had to be swift and impactful. This research draws on ethea of mindfulness, actor training techniques, referencing high-reliability organisations (HRO). Interviews conducted by the author with three leaders of actor training conservatoires in Higher Education institutions in Australia, the UK and the USA reflect on crisis management actions taken in response to the impact of Covid-19 on their sector, from which high-frequency words are identified and grouped thematically. Reflecting on these high-frequency words and the thematic grouping, a model of mindful leadership is proposed as a positive tool that may enable those in leadership to recognise and respond efficiently to wider structural frailties within Higher Education, with reference to the capacity of leaders to operate with increased mindfulness, enabling a more resilient organisation that unlocks the locus of control.

scholarly journals Comprehensive Overview of Sleep Disorders in Patients with Chronic Liver Disease

2021 ◽  
Vol 11 (2) ◽  
pp. 142
Author(s):  
Oana-Mihaela Plotogea ◽  
Madalina Ilie ◽  
Simona Bungau ◽  
Alexandru Laurentiu Chiotoroiu ◽  
Ana Maria Alexandra Stanescu ◽  
...  
Keyword(s):  
Sleep Disorders ◽  
Daily Practice ◽  
Chronic Liver ◽  
Asian Countries ◽  
Chronic Liver Diseases ◽  
Comprehensive Overview ◽  
The Usa ◽  
The Impact ◽  
Reliable Methods

The impact of sleep disorders (SDs) on patients with chronic liver diseases (CLD) is tremendous. SDs are frequently encountered among these patients and interfere with their quality of life. This review aims to present the data available so far about the prevalence, phenotypes, and proposed pathophysiological mechanisms of SDs in CLD. Moreover, we proposed to search the literature regarding the most reliable methods to assess SDs and the possible therapeutic options in patients with CLD. The main results of this review show that when it comes to prevalence, the percentages reported vary widely between studies performed among populations from the USA or Europe and those coming from Asian countries. Furthermore, it has been proven that SDs may also be present in the absence of neurocognitive disorders attributable to hepatic encephalopathy (HE), which contradicts traditional suppositions where SDs were considered part of the clinical scenario of HE. Currently, there are no specific recommendations or protocols to assess SDs in CLD patients and data about the therapeutic management are limited. Taking into consideration their impact, a protocol for diagnosing and managing SDs should be developed and included in the daily practice of hepatologists.

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