The importance of shelter in reducing neonatal lamb deaths

1972 ◽  
Vol 12 (58) ◽  
pp. 470 ◽  
Author(s):  
JK Egan ◽  
JW McLaughlin ◽  
RL Thompson ◽  
JS McIntyre
Keyword(s):  
Wind Speed ◽  
Major Part ◽  
Inclement Weather ◽  
Western Victoria

A flock of Merino ewes was confined in yards to areas of shelter in the field of lambing each night and during periods of inclement weather. A second flock was lambed in the open, but otherwise under identical conditions of management. The experiment was conducted in the spring in south western Victoria, and the mortality of single-born lambs during the period from birth to 48 hours, was reduced from 19.0 per cent to 6.3 per cent by the provision of shelter. It is concluded that the reduction of wind speed plays a major part in reducing lamb losses in intensive lambing systems of this nature.

B. The Non-Linear Calculations for Pulsating Stars

1967 ◽  
Vol 28 ◽  
pp. 105-176
Author(s):  
Robert F. Christy
Keyword(s):  
Major Part ◽  
Afternoon Session ◽  
Discussion Session ◽  
Pulsating Stars ◽  
Fourth Symposium ◽  
Non Linear ◽  
Considerable Discussion ◽  
Informal Approach ◽  
Preceding Session

(Ed. note: The custom in these Symposia has been to have a summary-introductory presentation which lasts about 1 to 1.5 hours, during which discussion from the floor is minor and usually directed at technical clarification. The remainder of the session is then devoted to discussion of the whole subject, oriented around the summary-introduction. The preceding session, I-A, at Nice, followed this pattern. Christy suggested that we might experiment in his presentation with a much more informal approach, allowing considerable discussion of the points raised in the summary-introduction during its presentation, with perhaps the entire morning spent in this way, reserving the afternoon session for discussion only. At Varenna, in the Fourth Symposium, several of the summaryintroductory papers presented from the astronomical viewpoint had been so full of concepts unfamiliar to a number of the aerodynamicists-physicists present, that a major part of the following discussion session had been devoted to simply clarifying concepts and then repeating a considerable amount of what had been summarized. So, always looking for alternatives which help to increase the understanding between the different disciplines by introducing clarification of concept as expeditiously as possible, we tried Christy's suggestion. Thus you will find the pattern of the following different from that in session I-A. I am much indebted to Christy for extensive collaboration in editing the resulting combined presentation and discussion. As always, however, I have taken upon myself the responsibility for the final editing, and so all shortcomings are on my head.)

Characterizing the convective heat exchange with plastic shading nets under natural arid conditions

2019 ◽  
pp. 11-20
Author(s):  
Ahmed M Abdel-Ghanya ◽  
Ibrahim M Al-Helal
Keyword(s):  
Wind Speed ◽  
Thermal Radiation ◽  
Convective Heat ◽  
Convective Heat Transfer Coefficient ◽  
Convective Heat Exchange ◽  
Radiative Properties ◽  
Wooden Frame ◽  
Arid Conditions ◽  
Air Temperatures ◽  
Radiation Fluxes

Plastic nets are extensively used for shading purposes in arid regions such as in the Arabian Peninsula. Quantifying the convection exchange with shading net and understanding the mechanisms (free, mixed and forced) of convection are essential for analyzing energy exchange with shading nets. Unlike solar and thermal radiation, the convective energy, convective heat transfer coefficient and the nature of convection have never been theoretically estimated or experimentally measured for plastic nets under arid conditions. In this study, the convected heat exchanges with different plastic nets were quantified based on an energy balance applied to the nets under outdoor natural conditions. Therefore, each net was tacked onto a wooden frame, fixed horizontally at 1.5-m height over the floor. The downward and upward solar and thermal radiation fluxes were measured below and above each net on sunny days; also the wind speed over the net, and the net and air temperatures were measured, simultaneously. Nets with different porosities, colors and texture structures were used for the study. The short and long wave’s radiative properties of the nets were pre-determined in previous studies to be used. Re and Gr numbers were determined and used to characterize the convection mechanism over each net. The results showed that forced and mixed convection are the dominant modes existing over the nets during most of the day and night times. The nature of convection over nets depends mainly on the wind speed, net-air temperature difference and texture shape of the net rather than its color and its porosity.

Monitoring Coastal Wind Speed Using BeiDou GEO Reflected Signals

2016 ◽  
Author(s):  
Qiang Wang ◽  
Dongkai Yang ◽  
Hongxing Gao ◽  
Weiqiang Li ◽  
Yunlong Zhu ◽  
...  
Keyword(s):  
Wind Speed

Filipino Guest Workers, Gender Segregation, and the Changing Social/Labor-Scape in the Kingdom of Saudi Arabia

2019 ◽  
Vol 16 (4) ◽  
pp. 503-512
Author(s):  
Simeon S. Magliveras
Keyword(s):  
Saudi Arabia ◽  
Migrant Workers ◽  
Major Part ◽  
Gender Segregation ◽  
Guest Workers ◽  
Kingdom Of Saudi Arabia ◽  
Gcc Countries ◽  
Overseas Filipino Workers ◽  
Dress Codes ◽  
Social Labor

Filipinos are a major part of the workforce in the Kingdom of Saudi Arabia with a population of almost one million. This article investigates the effects of gender segregation on Filipino workers and how they navigate their lives through systems imposed on them. In particular, it examines the Kafala system (administrative sponsoring system) used for recruiting migrant workers for GCC countries. This article suggests that contrary beliefs about gender segregation and dress codes, Filipinas found it empowering. However, this article also concludes that gender segregation and dress codes also lead to isolation and loneliness. In addition, it is concluded that the fate and contentment of the overseas Filipino workers are directly dependent on who sponsors them.

A note on John Hawkins (1761–1841) and the Hawkins archive

2000 ◽  
Vol 27 (2) ◽  
pp. 261-268
Author(s):  
R. J. CLEEVELY
Keyword(s):  
Major Part ◽  
Reference Lists ◽  
The West ◽  
History Of ◽  
The 1960S

A note dealing with the history of the Hawkins Papers, including the material relating to John Hawkins (1761–1841) presented to the West Sussex Record Office in the 1960s, recently transferred to the Cornwall County Record Office, Truro, in order to be consolidated with the major part of the Hawkins archive held there. Reference lists to the correspondence of Sibthorp-Hawkins, Hawkins-Sibthorp, and Hawkins to his mother mentioned in The Flora Graeca story (Lack, 1999) are provided.

Otherness in More’s Utopia

Moreana ◽  
2016 ◽  
Vol 53 (Number 205- (3-4) ◽  
pp. 73-94
Author(s):  
Guillaume Navaud
Keyword(s):  
Foreign Policy ◽  
Major Part ◽  
Point Of View ◽  
Way Of Life ◽  
Old World ◽  
Self Sufficiency

Utopia as a concept points towards a world essentially alien to us. Utopia as a work describes this otherness and confronts us with a world whose strangeness might seem disturbing. Utopia and Europe differ in their relationship to what is other (Latin alienus) – that is, that which belongs to someone else, that which is foreign, that which is strange. These two worlds are at odds in regards to their foreign policy and way of life: Utopia aspires to self-sufficiency but remains open to whatever good may arrive from beyond its borders, while the Old World appears alienated by exteriority yet refuses to welcome any kind of otherness. This issue also plays a major part in the reception of More’s work. Book I invites the reader to distance himself from a European point of view in order to consider what is culturally strange not as logically absurd but merely as geographically remote. Utopia still makes room for some exoticism, but mostly in its paratexts, and this exoticism needs to be deciphered. All in all, Utopia may invite us to transcend the horizontal dialectics of worldly alterity in order to open our eyes to a more radical, metaphysical otherness.

FORECASTING THE AVERAGE MONTHLY WIND SPEED WITH THE USE OF THE BAYES APPROACH TO FORECASTING

2018 ◽  
Vol 27 (103) ◽  
pp. 151-156
Author(s):  
V. Rosen, ◽  
◽  
A. Chermalykh, ◽  
A. Buchkivskii
Keyword(s):  
Wind Speed ◽  
Bayes Approach

THE INFLUENCE OF THE WIND SPEED PREDICTION ERROR ON THE SIZE OF THE STORAGE CONTROLLED OPERATION ZONE IN THE SYSTEM WITH THE WIND GENERATOR

2020 ◽  
Vol 2020 (57) ◽  
pp. 35-41
Author(s):  
K.S. Klen ◽  
◽  
M.K. Yaremenko ◽  
V.Ya. Zhuykov ◽  
◽  
...  
Keyword(s):  
Wind Speed ◽  
Prediction Error ◽  
Average Energy ◽  
Interpolation Formula ◽  
Wind Speed Prediction ◽  
Wind Generator ◽  
Prediction Horizon ◽  
Speed Prediction ◽  
Using Data ◽  
Predictor Corrector

The article analyzes the influence of wind speed prediction error on the size of the controlled operation zone of the storage. The equation for calculating the power at the output of the wind generator according to the known values of wind speed is given. It is shown that when the wind speed prediction error reaches a value of 20%, the controlled operation zone of the storage disappears. The necessity of comparing prediction methods with different data discreteness to ensure the minimum possible prediction error and determining the influence of data discreteness on the error is substantiated. The equations of the "predictor-corrector" scheme for the Adams, Heming, and Milne methods are given. Newton's second interpolation formula for interpolation/extrapolation is given at the end of the data table. The average relative error of MARE was used to assess the accuracy of the prediction. It is shown that the prediction error is smaller when using data with less discreteness. It is shown that when using the Adams method with a prediction horizon of up to 30 min, within ± 34% of the average energy value, the drive can be controlled or discharged in a controlled manner. References 13, figures 2, tables 3.

Autonomous energy supply based on the wind-energy complex and hydrogen energy storage

2019 ◽  
pp. 12-26
Author(s):  
S. I. Nefedkin ◽  
A. O. Barsukov ◽  
M. I. Mozgova ◽  
M. S. Shichkov ◽  
M. A. Klimova
Keyword(s):  
Wind Speed ◽  
Wind Energy ◽  
Power Supply ◽  
Energy Supply ◽  
Heat Supply ◽  
Hot Water ◽  
Successful Implementation ◽  
High Wind ◽  
Wind Generators ◽  
Weak Wind

The paper proposes an alternative scheme of guaranteed electricity and heat supply of an energy-insulated facility with a high potential of wind energy without the use of imported or local fuel. The scheme represents a wind power complex containing the park of wind generators located at the points with high wind potential. The wind generators provide guaranteed power supply even in periods of weak wind. For heat supply of the consumer, all surplus of the electric power goes on thermoelectric heating of water in tanks of accumulators, and also on receiving hydrogen by a method of electrolysis of water. The current heat supply is carried out with the use of hot water storage tanks, and the heat supply during the heat shortage is carried out by burning the stored hydrogen in condensing hydrogen boilers. We have developed the algorithm of calculation and the program "Wind in energy" which allows calculating annual balance of energy and picking up necessary quantity of the equipment for implementation of the scheme proceeding from the annual schedule of thermal and electric loading, and also potential of wind energy in the chosen region. The calculation-substantiation of the scheme proposed in relation to the real energy-insulated object Ust-Kamchatsk (Kamchatka) is carried out. The equipment for the implementation of an alternative energy supply scheme without the use of imported fuel is selected and compared with the traditional energy supply scheme based on a diesel power plant and a boiler house operating on imported fuel. With the introduction of an alternative power supply scheme, the equipment of the traditional scheme that has exhausted its resource can be used for backup power supply. Using climate databases, a number of energy-insulated facilities in the North and East of Russia with high wind energy potential are considered and the conditions for the successful implementation of the energy supply scheme are analyzed. This requires not only a high average annual wind speed, but also a minimum number of days of weak wind. In addition, it is necessary that the profile of the wind speed distribution in the annual section coincides with the profile of the heat load consumption.

Sign in / Sign up

Export Citation Format

Share Document