This paper is to propose solutions to selected exercises in Differential Topology by Guillemin and Pollack, [1], and to comment on certain proofs in the book. Although the sections covered in this paper correspond to specific sections in the book, they have been freely renamed to suit the content. The sections of the book which will be covered here are, in order: §6: Homotopy and Stability Appe...

This comment on Valsiner’s (2003) theory of enablement appreciates the theory’s contribution to fill the lacuna of social representation theory in dealing with individual reasoning and behaviour through a mechanism of semiotic mediation. It is shown, however, that the experimental illustration of the theory falls slightly short of providing evidence for the claims. In re-interpreting the experi...

an Overlooked Clue Is There a Perihematomal Ischemic Penumbra? More Questions and −− Editorial Comment Print ISSN: 0039-2499. Online ISSN: 1524-4628 Copyright © 2003 American Heart Association, Inc. All rights reserved. is published by the American Heart Association, 7272 Greenville Avenue, Dallas, TX 75231 Stroke doi: 10.1161/01.STR.0000077013.83817.12 2003;34:1680; originally published online...

Online news platforms curate high-quality content for their readers and, in many cases, users can post comments in response. While comment threads routinely contain unproductive banter, insults, or users “shouting” over each other, there are often good discussions buried among the noise. In this paper, we define a new task of identifying “good” conversations, which we call ERICs—Engaging, Respe...

We investigate the impact of a discussion snippet’s overall sentiment on a user’s willingness to read more of a discussion. Using sentiment analysis, we constructed positive, neutral, and negative discussion snippets using the discussion topic and a sample comment from discussions taking place around content on an enterprise social networking site. We computed personalized snippet recommendatio...

Revision is a core writing skill that presents challenges to both novice and expert writers. Within the context of peer review, peer feedback has the potential to provide rich guidance for reviewing, especially when making content-level changes. However, authors must review and evaluate each piece of feedback for meaningful critiques that can be applied to further drafts. In this work, we analy...

Correspondence regarding this manuscript should be addressed to: Dr. Jean Stockard, Director of Research, National Institute for Direct Instruction and Professor Emerita, University of Oregon, P. O. Box 11248, 805 Lincoln Street, Eugene, OR 97440; Email: [email protected]. I appreciate the opportunity to reply to Professor Eppley’s comment on my paper that was recently published in the Journa...

This paper is organized as follows. First, in Section 1, an outline is given of the theory of information packaging|i.e., the structuring of propositional content in function of the speaker's assumptions about the hearer's information state|as it is presented by Vallduv (1992, 1993, 1994), who identiies the informational primitives focus and ground, link and tail, adapted from the traditional p...

Copyright © 2001 American Heart Association. All rights reserved. Print ISSN: 0039-2499. Online Stroke is published by the American Heart Association. 7272 Greenville Avenue, Dallas, TX 72514 2001;32;1054-1060 Stroke Deanna M. Rothwell, Susan J. Bondy, J. Ivan Williams and Marie-Germaine Bousser Editorial Comment: A Population-Based Case-Control Study Chiropractic Manipulation and Stroke : A Po...

Many thanks for the comments. Please see our response below. To the first comment on NPP as a surrogate for soil carbon (C) inputs: NPP-C data from IMAGE or MIAMI are not directly used as soil C inputs to the RothC model. Soil C inputs are initially estimated by the model itself using an equilibrium simulation. Such a simulation uses the given soil organic carbon (SOC) content, here from the IS...