without doubt is one important aspects of sustainable forest management the continuing forest regeneration. identify and determine is effective dispersal and distribution pattern of regeneration patches in various types of forest and its evolution, in maintaining biodiversity in natural ecosystems. purpose was chosen of gorazbon district kheyrod forest for study, all patches regeneration were l...

Fault management in distribution systems lacks effective solution because of the unavailability of sufficient measurement data and comprehensive tools for fault analysis. To improve fault management, a systematic approach that takes advantage of distribution-level Smart Grid technologies is proposed. The new approach executes very accurate fault locating first, and then advices system operators...

Knowledge management in higher education is a set of organizational processes that support creating and transferring the knowledge in these institutions and allows for achieving organizational and university objectives. Therefore, for the proper management of organizational knowledge, appropriate tools are needed to be able to be aware of the effectiveness of knowledge management in organizatio...

globalization, increasing the global regulations of governmental and non-governmental organizations and customers’ request regarding to environmental compliance issues have led to organizations considering the green supply chain management to improve the environmental and economical performance. in order to maximize the efficiency of energy consumption and resources across the supply chain, gre...

Background: Social and contact networks affect both epidemic spread and intervention implementation. Network-based interventions are most powerful when the full network structure is known. However, in practice, resource constraints require decisions to be made based on partial network information. We investigated how the effectiveness of network-based vaccination schemes varied based on the acc...

Securing group communications in dynamic and large-scale groups is more complex than securing one-to-one communications due to the inherent scalability issue of group key management. In particular, cost for key establishment and key renewing is usually relevant to the group size and subsequently becomes a performance bottleneck in achieving scalability. To address this problem, this paper propo...

In many biological and social systems, where the ideal of heritance and aberrance exist at the same time, normal distribution failed in describing the distributions of variables. In stead, many real data as well as simulations indicate that log-normal distribution and power-law distribution can characterize many properties of this kind of systems. In this paper, the failure of normal distributi...

The evolving of vehicular network applications, from simple alert message exchanging to more elaborated and sophisticated systems, boosts the need for content delivery solutions. A useful technique, in such case, is the content replication, in which strategically selected vehicles replicate content and help on the delivery process. However, content replication is particularly challenging in veh...

The aim of this series of experiments was to determine whether attention is normally required for continuously processing vestibular information concerning orientation, or is required only when orientation is disrupted (eg by vestibular dysfunction or by conflicting visual and vestibular orientation cues). In the first two studies, healthy subjects were passively oscillated, and indicated when ...

QoS is the presentation level of service presented by a network to the user. The objective of QoS is to accomplish more deterministic system activities so that the information conceded by the network can be better conveyed and the resources can be better employed. QoS routing and security is the process of offering continuous free paths to guarantee the required QoS parameters. The security of ...