نتایج جستجو برای: impulsive period
تعداد نتایج: 501006 فیلتر نتایج به سال:
BACKGROUND The symptoms of Alzheimer's disease (AD) are numerous, including worsening of mood, psychotic symptoms, aggressive and impulsive behaviours, and many others. It is generally assumed that there exists a relationship between the severity of dementia and aggressive symptoms. The aim of this study was to assess the relationship between aggressive and impulsive behaviours and cognitive fu...
In this paper, by using theories and methods of ecology and ODE, a predator–prey system with Watt-type functional response and impulsive perturbations on the predator is established. It proves that there exists a locally asymptotically stable prey-eradication periodic solution when the impulse period is less than some critical value, otherwise, the system can be permanent. Further, by using the...
objective: the purposes of this study were to examine the relationships between personality traits, cognitive emotion regulation strategies and impulsive behaviors of borderline personality disorder, and to explore which personality traits and cognitive emotion regulation strategies can better predict and explain the impulsive behaviors in borderline personality disorder. methods: this study wa...
impulsive and convective frequencies are one of the most important subjects for evaluation of the seismic behavior of tanks. these two frequencies are defined by housner and used for obtaining rayleigh damping in time history analysis. aci 350 and nzsee standards have suggested some analytical solutions for finding convective and impulsive frequencies. these frequencies can also extract from mo...
Since the investigation of impulsive delay differential equations are inchoate, the literature on delay epidemic models with pulse vaccination is not extensive. In this paper, we propose a delay SIR epidemic model with impulsive effect and analyze the global dynamics behaviors of the model. Using the discrete dynamical system determined by the stroboscopic map, we show that there exists an ’inf...
In this paper, using the theories and methods of ecology and ordinary differential equations, an ecological model with an impulsive control strategy and a distributed time delay is defined. Using the theory of the impulsive equation, small-amplitude perturbations, and comparative techniques, a condition is identified which guarantees the global asymptotic stability of the prey-(x) and predator-...
The aim of this study was to the effectiveness of acceptance and commitment therapy on five personality factors and impulsivity components in borderline personality disorder. The research method was A-B-A single-subject design. The statistical population included all people with borderline personality disorder who were referred to the outpatient department of Zare Psychiatric Hospital and Mana ...
Adolescence is characterized by both maturation of brain structure and increased risk of negative outcomes from behaviors associated with impulsive decision-making. One important index of impulsive choice is delay discounting (DD), which measures the tendency to prefer smaller rewards available soon over larger rewards delivered after a delay. However, it remains largely unknown how individual ...
We investigate bifurcation and chaos observed in coupled BVP neurons with external impulsive forces. Although the single neuron without the external force has only one equilibrium point, combining these n (n ≥ 3) neurons unidirectionally in a ring, nphase periodic solutions are generated. Applying the impulsive forces, successive period-doubling bifurcations of the n-phase solution occur and ch...
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