Online communities exist in many forms and sizes, and are a source of considerable influence for individuals and organizations (1, 2). Yet, there is limited insight into why some online communities are sustainable, while others cease to exist (3). We find that communities that fail to maintain a typical hierarchical social structure which balances cohesiveness across size scales do not survive,...

Charles R. Anderson, Jr., Trophy Game Section, Wyoming Game and Fish Department, Lander, WY 82520, USA Keith Aune, Research and Technical Services, Montana Fish, Wildlife and Parks, Helena, MT 59620, USA Kim Barber, U.S. Department of Agriculture, Forest Service, Shoshone National Forest, Cody, WY 82414, USA Dan Bjornlie, Trophy Game Section, Wyoming Game and Fish Department, Lander, WY 82520, ...

Monolayer MX2 (M = Mo, W; X = S, Se) has recently been drawn much attention due to their application possibility as well as the novel valley physics. On the other hand, it is also important to understand the electronic structures of bulk MX2 for material applications since it is very challenging to grow large size uniform and sustainable monolayer MX2. We performed angle-resolved photoemission ...

We identify sustainable sizes for a multi-agent system that consists of two classes of agents: one class is responsible for searching an area; the other for providing perimeter security for that area. In this context, sustainability means the ability of the system to accomplish the task while balancing shared resources. Bio-inspired rules based on the pride structures of African lions are devel...

There is evidence of genetically determined host resistance mechanisms for most of the sheep parasites evaluated. The mechanisms vary; from no or reduced establishment, early expulsion, to suppression of parasites resulting in reduced size and fecundity. There is a need to integrate breeding for parasite resistance with the genetic improvement of production traits in farm animals, aiming for op...

Water treatment with metallic iron (Fe) is still based on the premise that Fe is a reducing agent. An alternative concept stipulates that contaminants are removed by adsorption, co-precipitation and size-exclusion in a reactive filtration process. This article underlines the universal validity of the alternative concept. It is shown that admixing non-expansive material to Fe as a pre-requisite ...

Taro (ColocasiaesculentaL. Schott) is a perennial root crop that belongs to Araceace family. It is widely cultivated as a staple food in Africa, Asia and pacific Islands. Despite its importance, there is limited information on many aspects of the crop. In order to obtain data that can support improved and sustainable taro production, a field trial was conducted to study the effects of ...

Taro (ColocasiaesculentaL. Schott) is a perennial root crop that belongs to Araceace family. It is widely cultivated as a staple food in Africa, Asia and pacific Islands. Despite its importance, there is limited information on many aspects of the crop. In order to obtain data that can support improved and sustainable taro production, a field trial was conducted to study the effects of ...

Regional integration has been used with varying success to overcome disadvantages associated with small size. The fundamental premise for regional cooperation in the Caribbean has been the promotion of economic development particularly in the manufacturing and industrial sectors. The opportunity exists however, for use of a regional approach to develop strategic responses to other issues essent...