In our prior work, we have demonstrated the effectiveness of a probabilistic reciprocity mechanism by which self-interested agents may learn to adopt a cooperative relationship with other similar agents. Reciprocative decisions were made based on the balance of help with another agent. In this paper, we expand that framework by making an agent explicitly model the help-giving procedure of the o...

BACKGROUND Diagnosing atypical atrioventricular node-dependent long RP supraventricular tachycardias (SVTs) can be challenging. METHODS AND RESULTS Nineteen patients with 20 SVTs (atypical atrioventricular nodal reentrant tachycardia without [n=11]/with [n=3] a bystander nodofascicular [NF] accessory pathway, orthodromic reciprocating tachycardia [ORT] using a decremental atrioventricular [pe...

This paper presents investigations of two special cases of dynamic valve analysis. These special cases arose in the development of a new type of gas field reciprocating compressor. These special cases were for a moving frame of reference (since the discharge valves were integral with the piston) , and for independent mass damping {sealing/damping elements are modelled separately instead of as "...

before concluding the surgical procedure, these complications can be prevented. We describe a case in which a lenticular fragment is identified and describe a novel technique of using a cannula to remove the piece rather than the typical re-insertion of the irrigation/aspiration handpiece which can actually create turbulent flow and lead to loss of the fragment under the iris or in the ciliary ...

OBJECTIVE To compare the capacity of a reciprocating system (Endo-Gripper) and a rotary system (Profile .04) for mechanical removal of root-filling material from curved root canals in vitro. MATERIALS AND METHODS Eighty canals (40 mesiobuccal and 40 mesiolingual) from mandibular first molars were instrumented and had their roots filled. After 6 months, 3-dimensional images of the roots were o...

BACKGROUND Primary root canals are considered to be most challenging due to their complex anatomy. "Wave one" and "one shape" are single-file systems with reciprocating and rotary motion respectively. The aim of this study was to evaluate and compare dentin thickness, centering ability, canal transportation, and instrumentation time of wave one and one shape files in primary root canals using a...

In order to reduce the failure probability of rubber sealing rings in reciprocating dynamic seal, a new structure of sealing ring based on bionics was designed. The biomimetic ring has three concave ridges and convex bulges on each side which are very similar to earthworms. Bulges were circularly designed and sealing performances of the biomimetic ring in both static seal and dynamic seal were ...