Multi-AUV Cooperative Hunting Control with Improved Glasius Bio-inspired Neural Network

Cooperative hunting with multiple Autonomous Underwater Vehicles (AUVs) not only needs the AUVs to cooperate, but also demands real-time path planning to catch up with evading targets. In this paper a time-based alliance mechanism to form efficient dynamic hunting alliances is proposed. After that, during the active hunting stage, an improved neural network model based on a Glasius Bio-inspired Neural Network (GBNN) is presented for path planning to immediately achieve tracking of an intelligent target. This study shows that the improved GBNN model has good performance in real-time hunting path planning. From the simulation studies as described in this paper, both the hunting alliance formation mechanism and the proposed real-time hunting path planning strategy show their advantages. The results show that the improved GBNN model proposed in this paper can work well in the control of multiple AUVs to hunt for intelligent evading targets in environments containing obstacles.

William Robertson on Natural Resources and Cultural Contacts in Colonial America

Key to the Scottish conception of historical progress was the famous four-stages theory, claiming that all societies, given the proper natural surroundings, would progress from a hunting stage, to a shepherding (pastoral), agricultural, and finally the commercial stage found in modern advanced societies. Scholars have long recognized that each stage was characterized by the development of new modes of acquiring subsistence. What has not been sufficiently emphasized, however, is that stadial theory entailed growing sophistication in utilizing natural resources, thus enhancing the Enlightenment's emphasis on the mastery of nature. The purpose of the present paper is not to revisit these well-studied aspects of Scottish Enlightenment thought, but rather to investigate their intersection. Scholars to date have devoted little attention to how these two topics were often mutually at play in discussions of the progress, or lack thereof, of non-Europeans. This was particularly evident in the thought of Robertson, and to a certain extent also Smith.

Lanceolate Points and Fossil Beaches in the Upper Great Lakes Region

Lanceolate points, formerly called “Yuma,” but now designated by specific type names such as Plainview, Milnesand, Eden, Browns Valley, and others, seem to have been various expressions of a common pattern or tradition that has been called "Piano" by Jennings (Griffin 1957: 23). The Piano tradition in the West represents an ancient hunting stage of culture that followed an earlier stage manifested by the paleo-Indians who used fluted points and hunted elephants of types now extinct.

Chapter I: Introductory Conclusions

In Order to understand the problems presented by the archaeological material from the middle and lower Yukon Valley, we will need to see this region in a cultural perspective. The area is inhabited today by Athabaskanspeaking Indians whom I call the Tena, following Jetté. These correspond to Osgood's Tanana, Koyukon and Ingalik. Practically all the specimens we shall have to discuss come from the territory of Osgood's last two tribes.These Tena had, at the time of white contact, a culture which was much like that of all the interior Alaskan Athabaskans, whom we can take as typical exponents of the Snowshoe hunting stage, discussed in Chapter X. The Tena differ from their relatives in two respects: first, they had a richer source of food in the salmon which come up the Yukon every summer to spawn, and second, they had borrowed much from the Eskimo. On the north, west, and southwest, Tena territory abutted on that of the Eskimo, and their strongest contacts were with the Eskimo of Kotzebue Sound, Norton Sound, the deltas of the Yukon and Kuskokwim, and Bristol Bay.