1997

SISUKORD

CONTENTS * INHALT

Number 1

In English. Summaries in Estonian

The transfer matrix and the boundary element method; 3–12
Andres LAHE
Sustainable phosphate rock mining; 13–22
Alo ADAMSON, Enno REINSALU, Lauri JUUSE, and Ingo VALGMA
Pillar strength and failure mechanisms; 23–34
Jüri-Rivaldo PASTARUS
Inner friction factor of fine powders; 35–49
Jüri TADOLDER and Jaan TAMM
A minimum material volume based shell–plate–frame–pipe system; 50–59
Mati HEINLOO and Kaspar KAUL
Some aspects of heat requirements in residential buildings; 60–67
Teet-Andrus KÕIV

Number 2

In English. Summaries in Estonian

Residential thermal energy storage development; 75–84
Roger A. CRANE, José L. F. PORTEIRO, and Ivan KLEVTSOV
Thermal shocks and fatigue life of helically coiled once-through steam generator tubes in transition boiling zone; 85–97
Ivan KLEVTSOV
On radial deflections in cylindrical shells under local loading; 98–106
Toomas LEPIKULT and Mati HEINLOO
Adaptive estimation scheme for linear interconnected subsystems; 107–114
Ingmar RANDVEE
Improvement of energy transfer in bidirectional phase conversion circuits by switched-mode positive-sequence filters; 115–126
Vello SARV and Maire OJAVEER
Knowledge-based test generation from specifications; 127–142
Jaak TEPANDI

Number 3

In English. Summaries in Estonian

Sonic stimulation of natural gas combustion; 147–157
Medhat HUSSAINOV, Harri KÄÄR, Igor SHCHEGLOV, and Toomas TIIKMA
New active diode-switched transformer filters to improve power factor of three-phase diode rectifiers with capacitive smoothing; 158–170
Tiiu SAKKOS and Vello SARV
Time-dependent properties of a viscous vortex ring; 171–184
Felix KAPLANSKI and Ülo RUDI
Design of the elastic double-spiral strip under local loading; 185–195
Mati HEINLOO and Margus KÜLASALU
Application of iterative dynamic programming to optimal control of nonseparable problems; 196–204
Rein LÜÜS

EVENTS
From Natural Resources Research Institute to the Estonian Energy Research Institute 1937–97; 205–222
Paul TAMKIVI

CHRONICLE
Ilmar Öpik 80; 223–225
Arvo OTS
Paul Tamkivi 70; 226
Teolan TOMSON

IN MEMORIAM
Harri Käär 1. 07. 1944–20. 04. 1997; 227
Ülo RUDI

Number 4

In English. Summaries in Estonian

Preface; 235–236
Mart MIN
Current-mode signal processing circuits; 237–249
Vello MÄNNAMA
Interfaces to 6H-SiC substrates – technology and simulation; 250–259
Toomas RANG and Alfons BLUM
Guardbands in random testing; 260–270
Günter KEMNITZ
Mixed-level test generator for digital systems; 271–282
Marina BRIK, Gert JERVAN, Antti MARKUS, Priidu PAOMETS, Jaan RAIK, and Raimund UBAR
Circuit partitioning method for FPGAs; 283–292
Helena KRUPNOVA and Gabrièle SAUCIER
On the robust controller design via Schur invariant transforms; 293–301
Ülo NURGES
Preliminary analysis of the energy balance of a solar-heated hot-bed; 302–309
Teolan TOMSON and Eha PAJUMETS

CORRESPONDENCE

Corrections to "Sustainable phosphate rock mining"; 310
Alo Adamson, Enno REINSALU, Lauri JUUSE, and Ingo VALDMA
Comments on "Sustainable phosphate rock mining"; 311
Robert PÄSOK
Authors, response to Päsok,s comments; .312
Instructions to authors; .314
Copyright transfer agreement; 317
Contents of volume 3; 318