An exemplification of “operational methodology” Vittorio Somenzi OriginalPaper 01 January 1955 Pages: 15 - 25
Le developpement du probleme de l'Unite de la Science dans l'Empirisme Logique Jacques Ruytinx OriginalPaper 01 January 1955 Pages: 26 - 41
The analysis of counterfactual conditionals Gabriel Nuchelmans OriginalPaper 01 January 1955 Pages: 48 - 63
Les Activities Mentales en rapport avec les Expressions Symboliques logiques et mathematiques Jean Piaget OriginalPaper 01 January 1955 Pages: 73 - 90
G. F. C. Griss and his negationless intuitionistic mathematics A. Heyting OriginalPaper 01 January 1955 Pages: 91 - 96
On the application of the concept of precisation Laura Grimm OriginalPaper 01 January 1955 Pages: 104 - 120
Some informal information on “information” D. van Dantzig OriginalPaper 01 January 1955 Pages: 137 - 144
Semantic and signific aspects of modern theories of communication G. MannouryD. Vuysje OriginalPaper 01 January 1955 Pages: 147 - 156
An introduction to scientific information J. L. van Soest OriginalPaper 01 January 1955 Pages: 177 - 181
Operational aspects of some fundamental concepts of human communication D. M. Mackay OriginalPaper 01 January 1955 Pages: 182 - 198
On the concepts of endechy and manipulation and their application to information theory J. F. Schouten OriginalPaper 01 January 1955 Pages: 199 - 204
Une contribution aux theories modernes de communication: machines de Turing et problemes de mot Dov Tamari OriginalPaper 01 January 1955 Pages: 205 - 227
The mathematical biology of physiological excitation George Karreman OriginalPaper 01 January 1955 Pages: 248 - 251
The information capacity of the human ear and of the cochlear nerve Hl. de Vries OriginalPaper 01 January 1955 Pages: 252 - 254
Recent mathematical-biological studies on communication George Karreman OriginalPaper 01 January 1955 Pages: 255 - 261
A contribution of information to sociology J. L. van Soest OriginalPaper 01 January 1955 Pages: 265 - 273
Information and content: A semantic analysis Yehoshua Bar-Hillel OriginalPaper 01 January 1955 Pages: 299 - 305
Transformation of speech into writing and simplification A. J. J. De Witte OriginalPaper 01 January 1955 Pages: 321 - 325
Criteria of meaning and analysis of usage Ingemund Gullvåg OriginalPaper 01 January 1955 Pages: 341 - 361
The distinction between modernizing and dissolving aesthetics Campbell Crockett OriginalPaper 01 January 1955 Pages: 362 - 371
In memoriam Jacob Clay The Dutch Members of the General Editorial Committee Announcement 01 January 1955 Pages: 423 - 427
Albert Einstein, inventor of chronogeometry A. D. Fokker OriginalPaper 01 January 1955 Pages: 442 - 445
Nieuwentyt's significance for the philosophy of science E. W. Beth OriginalPaper 01 January 1955 Pages: 447 - 453
Nieuwentijt und der teleologische Gottesbeweis Hans Freudenthal OriginalPaper 01 January 1955 Pages: 454 - 464
Die Mathematik als ein zugleich Vertrautes und Unbekanntes Paul Bernays OriginalPaper 01 January 1955 Pages: 465 - 471
Die Syllogistik des Johannes Hospinianus (1515–1575) Karl Dürr OriginalPaper 01 January 1955 Pages: 472 - 484