نتایج جستجو برای: choice of species
تعداد نتایج: 21207014 فیلتر نتایج به سال:
Pigeon and human subjects were given repeated choices between variable and adjusting delays to token reinforcement that titrated in relation to a subject's recent choice patterns. Indifference curves were generated under two different procedures: immediate exchange, in which a token earned during each trial was exchanged immediately for access to the terminal reinforcer (food for pigeons, video...
examining the universities postgraduate landscape architecture table in iran, indicates the increasing growth in the establishment of this major course in most universities nationwide, since almost 10 years from the beginning of the first academic course of this major in the shahid beheshti university (sbu). as a result, every year the number of graduated entering the market is increasing in th...
in order to respond to the problem of urban decline, different approaches have been defined in sucha way that urban regeneration approach became current in the 1980s (and more wildly after 1995) as a replacement for urban renewal. urban regeneration is the holistic process of reversing economic, social and physical decay in areas where it has reached a stage when market forces alone will not su...
Sequential mate choice strategies predict how females should alter their choosiness based on the availability of attractive males. There are many studies on sequential mate choice within species, but few have asked whether females apply these strategies to interactions between species and how these strategies may affect hybridization. We tested how previous interactions with conspecific and het...
Recently, despite the application of surgery and antifungal therapy, mortality rate of invasive fungal infections due to opportunistic fungi such as Candida and Aspergillus species has dramatically increased specially in immunocompromised host. The status of the immune system plays a key role in controlling the disease, yet antifungal therapy is of great benefit in saving involved patients. Tod...
Butterflies in the family Lycaenidae that have obligate associations with ants frequently exhibit ant-dependent egg laying behaviour. In a series of field and laboratory choice tests, we assessed oviposition preference of the Australian lycaenid Jalmenus evagoras in response to different species and populations of ants. Females discriminated between attendant and nonattendant ant species, betwe...
learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
both urban and rural cutaneous leishmaniasis (cl) are endemic in different parts of iran and have long been recognized in most provinces. however, there is no report of endemicity of cl in rural areas of kashan, 200 km north of isfahan and 260 km south of tehran, iran. to our knowledge, this is the first report of outbreak of cutaneous leishmaniasis in this area. to study and identify the natur...
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