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The development of logistics and regional economy is complementary to each other, and the study of logistics efficiency is an important foundation to promote regional economic development. Based on the DEA model, this paper constructs the corresponding input-output index, and uses spss software to analyze the reasonableness of the selected indicators. It takes eight cities in the Yangtze Delta of...
Under the indoor building environment, when the fires and other accidents occur, how to effectively organize the masses evacuation and fire rescue, is closely related to the safety of people's lives and property and has become a critical problem of public concern. This paper presents an improved ant colony algorithm (ACO) to solve the problem of how to optimize the evacuation route and rescue route...
We are currently observing a huge paradigm shift by different organizations moving their information technology services from enterprise-based data centers that run on different dedicated servers on their premises to cloud computing environment. Organizations are renting these services on demand basis from large cloud service providers that build and manage various large scaled data centers consisting...
Overviews of comprehensive geometry-based and electrical-based PCB layout checks are given. Layout check results are then compared with signal integrity simulations at various levels: with vs. without trace couplings; with vs. without via couplings; ideal PDN vs. non-ideal PDN; partial channel vs. full channel. A DDR3 memory design is used as an example.
Virtual prototyping technology provides increasingly effective support to improve the car's handling and stability. Micro-sports vehicle is as the research object. In order to enhance automobile's handling stability, using ADAMS/Car precisely to establish virtual prototype model of mini sport car, through three dimensional coordinate graphic to measure a same type of car. Then carries on the steering...
In light of the characteristics of circuit experiment teaching and the problems in the experiment. The electron design automation software Multisim is used to develop a virtual simulation platform to bridge the gap between textbook theory and the real circuits. The application of Multisim in electronics experiment teaching have been discussed with examples. The results indicates that the new methodology...
The development of delay-tolerant networks (DTNs) has attracted significant attention in the network research community. In this paper, we propose a new type of DTN - a homing-pigeon-based DTN (HoP-DTN). In the HoP-DTN, each node owns a dedicated messenger (called a pigeon). The only form of internode communication is for a pigeon to periodically carry a batch of messages originated at the home node,...
Education has the scientific attributes, also the artistic attributes. Former theories and process models for instructional design incline to view instructional activities as a science, neglecting its artistic feature. Based on the education duality, this paper puts forward a new process model for designing instruction, discusses the basic principles of artistic design, and also offers an initiative...
In a peer-to-peer (P2P) live streaming system, the streaming quality of an end user is much affected by the aggregate download bandwidth from the partners. In this paper, we propose a stochastic model for the P2P streaming system to analyze the asymptotic probability distribution of the aggregate download bandwidth of a peer. Using renewal theory, we derive a close form expression for the asymptotic...
In this paper, we analyze a new type of delay tolerant networks (DTN) where each node owns multiple dedicated messengers, called pigeons. The only form of inter- node communication is for a pigeon to periodically carry a batch of messages originated at the home node, deliver to the corresponding destination nodes and return home. We name this as homing-pigeon (HoP) based routing mechanism, which is...
The development of delay tolerant networks (DTN) has attracted significant attention in the networking research community. In this paper, we investigate a new type of delay tolerant network - homing pigeon based DTN (HoP-DTN) system. In HoP-DTN, each node owns multiple dedicated messengers (called pigeons), and each pigeon will take a round trip starting from its home, through the destination nodes...
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