The impact of a tree virus on production value

2010 ◽  
Vol 5 (2) ◽  
pp. 194-209
Author(s):  
Donald N. Stengel ◽  
Priscilla Chaffe‐Stengel ◽  
Kathleen E. Moffitt
2013 ◽  
Vol 2 (1) ◽  
pp. 63
Author(s):  
Ariusni Ariusni ◽  
Mike Triani

This study aimed to analyze the relationship between variables wage estimates, the value of production and the number of small industries to total workers absorbed in the small industry 19 districts/cities in West Sumatra. Results of panel regression model showed that there is no significant effect on wages caused by the rigidity of wages or salaries that balances inflexible employment so the impact will be an increase in unemployment in the county/city of West Sumatra Province. The production value has no significant effect on employment in the county/city of West Sumatra Province. This is due to the labor working with a low level of productivity of labor in which the ability to produce goods is limited due to the low skill level of each area. Number of small industry has significant effect on industrial employment of small industries in 19 districts/cities in West Sumatra Province. This suggests that increasing the number of small industries will have broad impact on employment in the regions of West Sumatra Province.


2017 ◽  
Vol 65 (1) ◽  
pp. 19-25 ◽  
Author(s):  
Peter Kress ◽  
Ulrich Löwen ◽  
Alexander Pflaum

Abstract The presented role model enables the description and analysis of value networks in the manufacturing industry. Based on the production role model the impact of digitalization on value networks will be investigated. Key results by analyzing the role model are the emergence of new players, the increasing importance of system integrators, changing business models, and the increasing interconnectedness of players.


Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8568
Author(s):  
Aneta Bełdycka-Bórawska ◽  
Krzysztof Józef Jankowski ◽  
Tomasz Rokicki ◽  
Michał Gostkowski

The aim of this study was to assess the impact of the area under rapeseed cultivation on the economic performance and organization of farms. The study was conducted in 164 rapeseed farms in different Polish voivodeships. A targeted sampling procedure was used to select farms for the study. The studied population was divided into four groups depending on area under rapeseed cultivation rates. The selected farms were located in voivodeships with the highest rapeseed acreage rates of the total cropped area. The economic performance of the examined farms improved with increases in rapeseed area. Farms with larger rapeseed areas were characterized by higher production values and better economic performance. On average, the total production value per farm was highest in the group of farms with rapeseed areas of 20.1–30 ha. Similar results were noted when total production values were expressed per ha of arable land, per full-time employee and per man-hour. Total production value was lowest in farms with the smallest rapeseed areas. Farms with the largest areas under rapeseed cultivation achieved the highest farm household income. The farm household income values per full-time employee and per man-hour were highest in farms with the largest areas under rapeseed cultivation. The values of fixed assets and current assets increased with increases in rapeseed area. Most farms were run by owners with secondary school education. The highest percentages of farmers with university education were noted in farms with rapeseed areas of 10–20.1 ha (37.5%) and above 30 ha (30.4%). The vast majority of farms from all groups were run by male farmers. The research results could be useful for policy makers, because they indicate that rapeseed production can not only be profitable but can also be used for biofuel production.


2019 ◽  
Vol 7 (5) ◽  
pp. 437-451
Author(s):  
Dongling Zhang ◽  
Weili Fan ◽  
Jingshuai Chen

Abstract In order to analyze the impact of technological innovation and regional differences in marine economy on the development of marine economy, the paper uses the regional panel data of China’s total marine production value from 2006 to 2015, and uses the Theil index to measure regional differences in the marine economy based on the logarithm of the Cobb-Douglas production function. Finally, the paper establishes a random effect panel data model for empirical analysis. The research indicates that the regional differences in the marine economy show a narrowing trend, which promotes or inhibits the development of the marine economy; The extent of the impact of regional differences in the marine economy on the development of the marine economy is inconsistent; Scientific and technological innovation in various regions has promoted the development of marine economy.


2017 ◽  
pp. 43-47
Author(s):  
D. V. Balin ◽  
T. V. Semenova

On the basis of flow modeling the impact of injectioninduced fracturing on the cumulative oil production value is examined in dependence of the oil and water mobility ratio under conditions of homogeneous and heterogeneous permeability of reservoir. It is established that the presence of injection-induced fracture in the near-wellbore area of the injection well can have a positive influenceon the dynamics of production fluid. Complex approach to estimation of probability of injection-induced fractures presence and algorithm of determination of their geometric parameters areal so proposed.


2020 ◽  
Vol 50 (11) ◽  
Author(s):  
Nermin Bahşi ◽  
Eray Çetin

ABSTRACT: Agriculture is an indispensable activity for all countries. Depending on the increasing population, food needs can be met by increasing agricultural production. In this respect, it is of great importance to investigate the value of agricultural production and the factors affecting agricultural production. This study aimed to examine the impact on the agricultural production value of agricultural bank credit in Turkey. In the study, with the aim of examining the relationship between agricultural credit and agricultural production value in Turkey, 1998-2016 real agricultural loans and agricultural real gross domestic product annual data covering the period given above were used. The statistical analysis tool is ordinary least squares (OLS) techniques. According to OLS regression, the purposed model explains 83.94% of total variance. Regression coefficients show that effect of term is higher than effect of agricultural credits. The reason for this difference may be explained as dependency of credits on macroeconomic indicators and political structure of the country. This study proposes that agricultural credit mechanism in the country needs to be developed to increase the financing opportunities for the realization of technology and modernization investments by farmers.


1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.


1962 ◽  
Vol 14 ◽  
pp. 169-257 ◽  
Author(s):  
J. Green

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.


1997 ◽  
Vol 161 ◽  
pp. 197-201 ◽  
Author(s):  
Duncan Steel

AbstractWhilst lithopanspermia depends upon massive impacts occurring at a speed above some limit, the intact delivery of organic chemicals or other volatiles to a planet requires the impact speed to be below some other limit such that a significant fraction of that material escapes destruction. Thus the two opposite ends of the impact speed distributions are the regions of interest in the bioastronomical context, whereas much modelling work on impacts delivers, or makes use of, only the mean speed. Here the probability distributions of impact speeds upon Mars are calculated for (i) the orbital distribution of known asteroids; and (ii) the expected distribution of near-parabolic cometary orbits. It is found that cometary impacts are far more likely to eject rocks from Mars (over 99 percent of the cometary impacts are at speeds above 20 km/sec, but at most 5 percent of the asteroidal impacts); paradoxically, the objects impacting at speeds low enough to make organic/volatile survival possible (the asteroids) are those which are depleted in such species.


1997 ◽  
Vol 161 ◽  
pp. 189-195
Author(s):  
Cesare Guaita ◽  
Roberto Crippa ◽  
Federico Manzini

AbstractA large amount of CO has been detected above many SL9/Jupiter impacts. This gas was never detected before the collision. So, in our opinion, CO was released from a parent compound during the collision. We identify this compound as POM (polyoxymethylene), a formaldehyde (HCHO) polymer that, when suddenly heated, reformes monomeric HCHO. At temperatures higher than 1200°K HCHO cannot exist in molecular form and the most probable result of its decomposition is the formation of CO. At lower temperatures, HCHO can react with NH3 and/or HCN to form high UV-absorbing polymeric material. In our opinion, this kind of material has also to be taken in to account to explain the complex evolution of some SL9 impacts that we observed in CCD images taken with a blue filter.


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