A new method is developed for analyzing case series data in situations where occurrence of the event censors, curtails, or otherwise affects post-event exposures. Unbiased estimating equations derived from the self-controlled case series model are adapted to allow for exposures whose occurrence or observation is influenced by the event. The method applies to transient point exposures and rare n...

In this paper, a new procedure for decoding cyclic and BCH codes up to their actual minimum distance is presented. Previous algebraic decoding procedures for cyclic and BCH codes such as the Peterson decoding procedure and our procedure using nonrecurrent syndrome dependence relations can be regarded as special cases of this new decoding procedure. With the aid of a computer prokram, it has bee...

In this paper we characterize topologically the empty interior subsets of a compact surface S which can be ω-limit sets of recurrent orbits (but of no nonrecurrent ones) of continuous flows on S. This culminates the classification of ω-limit sets for surface flows initiated in [Jiménez & Soler, 2001], [Soler, 2003], [Jiménez & Soler, 2004], and [Jiménez & Soler, 2004b]. We also show that this t...

Nonrecurrent traffic congestion (NRTC) usually brings unexpected delays to commuters. Hence, it is critical accurately detect and recognize the NRTC in a real-time manner. The advancement of road detectors provides researchers with large-scale multivariable temporal-spatial data, which allows deep research on be conducted. However, remains challenging task construct an analytical framework thro...

We construct new substantive examples of non-autonomous vector fields on 3-dimensional sphere having a simple dynamics but non-trivial topology. The construction is based two ideas: the theory diffeomorpisms with wild separatrix embedding (Pixton, Bonatti-Grines, etc.) and suspension over diffeomorpism (Lerman-Vainshtein). As result, we get periodic, almost periodic or even nonrecurrent which h...

BACKGROUND Obstetricians in developing countries appear generally reluctant to conduct vaginal delivery in women with a previous Cesarean because of lack of adequate facilities for optimal fetomaternal monitoring. OBJECTIVE To describe delivery outcomes among women with one previous Cesarean section at a tertiary hospital in Southeast Nigeria. METHODS This was a prospective observational st...