Additions to the Known Endemic Flora and Fauna of Arkansas

Robison and Smith\u27s (1982) list of endemic species of Arkansas rendered a valuable service to the community of biologists interested in the endemic biota of the state. These authors listed seven species of plants and forty species of animals endemic to Arkansas. This paper stimulated my interest in the endemic biota of the Ozark/Ouachita Mountain region of Missouri, Arkansas, and Oklahoma. During the course of compiling a list of Ozark/Ouachita endemic species several references were found that listed Arkansas endemic taxa inadvertently overlooked by Robison and Smith. Most notable among these references was Chamberlin and Hoffman (1958), Checklist of the Millipeds of North America. This paper chronicles the work of N. B. Causey and R. V. Chamberlin who describe thirty-two species of endemic Arkansas Millipeds. These records as well as a few additional records for other animal and plant taxa are presented in this paper

New Species of Occasjapyx From the Interior Highlands (Insecta: Diplua: Japygidae)

A new species of Japygidea, Occasjapyx carltoni is described from the Ozark Mountains of the Interior Highlands. This is the first record of the genus outside of California in North America. The genus is also known from China and Japan

Public Participation in Resolving Environmental Disputes and the Problem of Representativeness

Dr. Allen, the symposium organizer, reviews recent .efforts to increase public involvement in environmental disputes

Hydrodynamic pressures on sloping dams during earthquakes. Part 2. Exact theory

The equations for the earthquake forces on a rigid dam with an inclined upstream face of constant slope are solved exactly by two-dimensional potential-flow theory. The distribution of the hydrodynamic pressure along the upstream face and the total horizontal, vertical and normal loads on the dam are computed from the integral solutions. The results obtained from the exact theory are compared with those derived from the momentum-balance method and there is reasonable agreement

Commentary on the Limits of Compensation and Deterrence in Legal Remedies

Allen comments on papers written by James Cox and Deborah DeMott regarding the deterrence of corporate misconduct. He examines the limits of compensation and deterrence as legal remedies

System Description for a Scalable, Fault-Tolerant, Distributed Garbage Collector

We describe an efficient and fault-tolerant algorithm for distributed cyclic garbage collection. The algorithm imposes few requirements on the local machines and allows for flexibility in the choice of local collector and distributed acyclic garbage collector to use with it. We have emphasized reducing the number and size of network messages without sacrificing the promptness of collection throughout the algorithm. Our proposed collector is a variant of back tracing to avoid extensive synchronization between machines. We have added an explicit forward tracing stage to the standard back tracing stage and designed a tuned heuristic to reduce the total amount of work done by the collector. Of particular note is the development of fault-tolerant cooperation between traces and a heuristic that aggressively reduces the set of suspect objects.Comment: 47 pages, LaTe