We present an innovative approach to explore water management options in irrigated agriculture considering the constraints of water availability and the heterogeneity of irrigation system properties. The method is two-folds: (i) system characterization using a stochastic data assimilation procedure where the irrigation system properties and operational management practices are estimated using r...

SOLLECITO, WILLIAM A. The Time Reversed Crossover Design in Health Servi ces Research. "(Under the di rect i on of DENNIS B. GILLINGS.) Hea1th servi ces pol icy is often determi ned based on natu ra lly occurring experiments. Because true experimental designs cannot be used, quasi-experimental designs must be Bpplied to such experiments in order to draw valid conclusions. Among the wide variety...

We prove that the pseudovarieties of all finite semigroups, and of all aperiodic fin1 e sernigroups are irreducible for join, for semidirect product and for hlal 'ce~. product. In particular, these pseudovarieties do not admit maximal proper suhpseudovariet~es. More generally, analogous results are proved for the pseudovar~ety of all finite serrigroups all of whose subgroups are in a fixed pseu...

We report 3 patients with acquired nystagmus who were treated with eye muscle tenotomy and reat­ tachment. The first patient had acquired pendular nystagmus (APN) associated with multiple sclerosis (MS) and underwent bilateral medial rectus tenoto­ mies and bilateral lateral rectus recessions to cor­ rect exotropia. Eye movements were recorded before surgery, after surgery, and after surgery an...

THE PROBLEMS of evaluation of teaching rest upon a question of view point. That this is true at the point of defining goals is broadly recognized. That it is also true at the stage of select ing and developing methods of evalua tion is more likely to be only vaguely realized or missed altogether. Perhaps it is safe to say that we can look for sig nificant insights to those situations where ther...

In an alternative mode, the Sec61 protein associates with a tetrameric Sec62/63p complex to form the SEC complex, a channel active in posttranslational transloca-heat shock 70 protein (Hsp70) called BiP, or Kar2p in yeast (Lyman and Schekman, 1997). BiP and the SEC complex are the only components required for translo-cation in a reconstituted system (Panzner et al., 1995); of A significant frac...

l)okfulam ih)a,d thmg Kong pkwong((~cs.hku.hk and Abstract A Chinese word Seglnentation algorithm based on forward icnaxinnlln matching and word binding force is t)roposed in this pai)er. This algorithm Iilays a key role in post-processing the outtmt of a character or st/eech recognizer in determining the proper word sequence c(/rre-st)onding to an input line of cha.raeter images or a speech wa...

Biocomplexity was introduced to most ecologists through the National Science Foundation’s grant program, and the literature intended to introduce that program. The generalities of that literature contrast with the abstract and mathematical sophistication of literature from physics, systems theory, and indeed even of pioneering ecologists who have translated the concept intoecology.Thissituation...

A measur ing system was designed fo r s imul taneous record ing o f modu la ted ch lo rophy l l f luorescence and l ight scatter ing changes. The k inet ic re la t ionsh ip was invest igated between l ightinduced changes in non-pho tochemica l f luorescence quenching, as de te rmined by the saturat ion pulse method , and in l ight scatter ing, as measured via the apparent absorbance change at 5...

The re cord of arc magmatism is wide spread in the Ca na dian Cor dil lera (e.g., Armstrong, 1988; Woodsworth et al., 1991), par tic u larly in the Quesnel and Stikine ter ranes, where plutonic rocks re lated to Me so zoic arcs host most of the por phyry-style min eral de pos its in the Cor dil lera (An der son, 1985; Woodsworth et al., 1991; McMillan et al., 1995; Fig 1). Iso to pic char ac te...