Relationship of wool production to stocking rate in Victoria

1975 ◽  
Vol 15 (74) ◽  
pp. 357 ◽  
Author(s):  
R Jardine ◽  
S O'Brien ◽  
MV Frew

Data from 14 stocking rate experiments, conducted over the period 1964-72, are used to derive a general relationship between wool production (W, kg sheep-1) and stocking rate (R, sheep ha-1), for the wool-growing areas of Victoria. This relationship is: W = (2.10 + 1.11P - 0.0045 C2) - (0.16 + 0.026 P - 0.00054 C2). R, where P ('productivity', kg sheep-1) and C ('carrying capacity', sheep ha-1) characterise any particular locality in a given year. The relationship is shown to be in accord with a simple theoretical model. In addition, some comparative ewe-wether relationships are presented.

1977 ◽  
Vol 16 (10) ◽  
pp. 1036-1048 ◽  
Author(s):  
Joe R. Eagleman ◽  
Wen C. Lin

Abstract Dual-Doppler radar data were analyzed for three different times during the life cycle of a severe thunderstorm. The thunderstorm developed a double vortex inside as a tornado was generated beneath the cloud.The organized kinematic and precipitation internal structure of the thunderstorm support a theoreticaldouble-vortex thunderstorm model that was developed earlier. The horizontal perturbation and relativewinds, vertical winds, horizontal divergence and vorticity are compared for the three different times ofmeasurement. The measurements and theoretical model provide new explanations of the severe thunderstorm and the relationship of associated tornadoes.


2019 ◽  
Vol 15 (3) ◽  
Author(s):  
Ken Yahagi

Abstract This paper presents a simple theoretical model to analyze the relationship between hate groups and hate crimes. This paper focuses on two important roles of hate groups; as providers of membership benefits for group members and as a coordination device for leadership. This paper shows that this interaction implies the possibility of multiple equilibria of the crime rate. This result explains why hate crimes and extreme criminal activities vary across communities and over time, and why a social shock such as 9/11 resulted in a rapid increase of hate crimes. Moreover, if hate groups work as coordination devices, the existence of hate groups may increase hate crimes. This result supports recent empirical results analyzing relationships between hate groups and hate crimes.


2014 ◽  
Vol 1073-1076 ◽  
pp. 2709-2713
Author(s):  
Ta Liu ◽  
Dong Ping Han ◽  
Hang Zhou

Nowadays, economic system scale is continuously extendinging; it has closed to or maybe exceeding the carrying capacity of ecological system. To convert such situation, human beings have to concern about how to maximize material capital service while minimizing ecological capital consumption. One of the approaches is to turn the traditional operating model into environmental operation model, which extends the value-based management idea, explores the relationship of economic and ecological capital efficiency, establishes the ecological capital efficiency analytical system and discovers its driving factors and improving methods.


1958 ◽  
Vol 38 (1) ◽  
pp. 53-60
Author(s):  
S. B. Slen ◽  
E. C. Banky ◽  
H. F. Peters

The relationship of shearling and second-year clean fleece weight to total wool production, i.e., first 5 years of life, was analysed in three breeds of range sheep (Canadian Corriedale, Rambouillet, and Romnelet) to determine its usefulness in selection for increased wool production.A correlation of +.67 (p <.01) between shearling clean fleece weight and the sum of the four mature fleece weights was obtained in the three breeds studied. When the first mature weight (second fleece) was correlated with the total weight of the three subsequent fleeces, the correlation was increased significantly (p <.01). Consequently, the second fleece appeared to be a more reliable estimate of lifetime production than shearling weight. No breed differences in these correlations were found when lifetime production was compared to shearling or to second-year fleece weights. The regression coefficients of lifetime production on shearling fleece weight showed that a shearling ewe which produced 1.0 lb. of clean wool above the average produced approximately 3.0 lb. more than the average during her productive life.Shearling fleece weight was found to represent 83, 77, and 80 per cent of the maximum mature fleece weight in the Canadian Corriedale, Rambouillet, and Romnelet, respectively. No breed differences were observed in this relationship.The repeatability of annual clean fleece weight was found to be.93,.83, and.76 for the Rambouillet, Romnelet, and Canadian Corriedale, respectively.


Author(s):  
Homero Zambrano

A simple theoretical model explains the divergent empirical results concerning the effect of wage dispersion on firm performance. First, causality in the relationship is clarified. Then, through the model, it is shown that firm performance is non-monotonic with respect to wage dispersion. Likewise, it is shown that large firms are more likely to benefit from a dispersed wage structure than small firms.


2013 ◽  
Vol 405-408 ◽  
pp. 1067-1072
Author(s):  
Xiao Sheng Song ◽  
Jing Yu Su ◽  
Xiao Dong Guo

Mortise-tenon joint is an important characteristic of Chinese ancient timber buildings. Survey on mortise-tenon joint of Chinese timber structures in the last twenty years is summarized and reviewed in five aspects as follows: (1) load transfer mechanism, (2) the relationship of M-θ, (3) the failure characteristics, (4) carrying capacity, and (5) seismic performance. Finally, research on the strengthening of mortise-tenon joints is presented in this paper.


2016 ◽  
Vol 6 (1) ◽  
pp. 481 ◽  
Author(s):  
Cassandro Mendes ◽  
Sabino Junior

<p class="ber"><span lang="EN-GB">Deforestation is a global issue and recently has been given much attention by governments and international institutions. The present paper aims to present a simple theoretical model on the relationship between corruption and deforestation. To model such relationship, we used differential games. Our model suggests that corruption increases deforestation. Moreover, the salary paid in the public sector may be an important tool to fight deforestation in development countries.</span></p>


1956 ◽  
Vol 7 (1) ◽  
pp. 57 ◽  
Author(s):  
PG Schinckel

The relationship of body weight to wool production was examined in a flock of Merino sheep of South Australian strain over a period of 7 years. In only one out of 10 groups examined was there a significant correlation between body weight and the amount of clean wool produced per unit area of midside skin. It is concluded that body weight and wool production per unit area of body surface are independent. In all groups there was a highly significant correlation between clean fleece weight and clean wool per unit area of body surface in the midside region. The regression of log fleece weight on log body weight was determined in 15 groups. In no case was the regression coefficient significantly different from 0.60. As the regression of log surface area on log body weight in sheep is of the order of 0.60, it is concluded that wool production is proportional to fleece-bearing surface. The mean regression coefficients of log fleece weight on log body weight, calculated within sire and year groups, were: rams, 0.52 ± 0.056; ewes, 0.61 ± 0.038; wethers, 0.30 ± 0.068. There were no significant differences between sires in the regression of log fleece weight on log body weight. There were, however, highly significant differences between sire groups in mean log fleece weight, after adjustment for differences in log body weight. Skin areas 3 by 3 cm were tattooed on the left midside of 24 lambs at 1 month of age. The wool produced on these areas, and the areas of the tattoos, were measured at 4-monthly intervals from 4 months of age until 28 months. The amount of wool produced m7as proportional to the area in each of the six periods. There was also a highly significant difference between periods and between sheep in the amount of wool produced after adjustment for differences in tattoo area.


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