نتایج جستجو برای: farm structure
تعداد نتایج: 1603283 فیلتر نتایج به سال:
That we are living in an age of information and knowledge explosion is an accepted cliché. Formal and informal data, information and knowledge are available to individuals and organizations in both structured and unstructured formats leading to information overload, concerns about data accessibility, discussions of the role of metadata, content farms, return on investment in both the creation a...
This paper aims to construct an empirical model for the analysis of two principal simultaneous decisions of farm operators: participation in the off-farm labor market, and the amount of resources to invest in farm capital. We first develop a theoretical model analyzing the effects of exogenous shocks on farmers’ decisions. Then, we estimate jointly a multinomial probit model of farmers’ off-far...
recent debates concerning sustainable agriculture have received many attentions, but efforts concerning materialization of the concept haven’t enough. if the concept of sustainability is to be used as an underlying component of human interventions in the environment and ecosystem, a sound measure of sustainability is surely required. development of agricultural sector without considering the co...
In the spring and summer of 2001, 47 fathers, 48 mothers and 117 children of Iowa farm and non-farm households were recruited to participate in a study investigating take-home pesticide exposure. On two occasions approximately 1 month apart, urine samples from each participant and dust samples from various rooms were collected from each household and were analyzed for atrazine, metolachlor, gly...
It is necessary to know the etiological structure of diseases in each region country that affects a particular animal species for successful prevention and diagnosis natural focal diseases, leptospirosis. In this paper, authors presented research materials on distribution pathogenic leptospirosis circulating populations farm animals Yakutia. Currently, 8 unfavorable points have been registered ...
In modern farming, it is indispensable to monitor the field environment, crop conditions, and farming operations. To support these activities at farm level, we have developed several types of farm operation monitoring systems based on various needs of farms. FVS (Farming Visualization System) is one of such systems and designed in order to record and replay all the information of farming operat...
In this paper we analytically derive the sojourn time of a user accessing an online IPTV recording service. Basically, the system consists of a server (or server farm) and the bandwidth at which a user can download recorded files depends on the number of other concurrently downloading users. In particular, we consider both cases, one in which the user’s download speed is limited by his own acce...
In order obtain suitable and effective farm machinery performance besides higher crop yield, on time farm machinery field operations are essential. Farm tractors are important machines that used for soil tillage, crop planting and protection. It is even used for harvesting crops in some areas. Thus, any failure in farm tractors influences the series of field operations. Farm managers are usuall...
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