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Search Results: 1 - 10 of 46805 matches for " Michael Weiss "
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User Frustrations as Opportunities
Michael Weiss
Technology Innovation Management Review , 2012,
Abstract: User frustrations are an excellent source of new product ideas. Starting with this observation, this article describes an approach that entrepreneurs can use to discover business opportunities. Opportunity discovery starts with a problem that the user has, but may not be able to articulate. User-centered design techniques can help elicit those latent needs. The entrepreneur should then try to understand how users are solving their problem today, before proposing a solution that draws on the unique skills and technical capabilities available to the entrepreneur. Finally, an in-depth understanding of the user allows the entrepreneur to hone in on the points of difference and resonance that are the foundation of a strong customer value proposition.
Economics of Software Product Development Collectives
Michael Weiss
Technology Innovation Management Review , 2011,
Abstract: Where software product development occurs is shifting from single companies to groups or collectives of companies. In this article, we retrace the evolution of how software product development is organized and then offer insights into the economic motivation for collectives, which will be relevant to companies considering joining a software product development collective. Building on the literature on software product line economics, we identify three factors affecting the economics of collectives (level of contribution, number of members, and diversity of use), and develop a model that links those factors to three economic outcomes (time, quality, and cost). This model can be used by potential members when deciding whether or not to join a collective.
TIM Series: Open APIs, Mashups and User Innovation
Michael Weiss
Technology Innovation Management Review , 2008,
Abstract: On June 11, 2008, Michael Weiss from Carleton University delivered a presentation entitled "Open APIs, Mashups and User Innovation". This section provides the key messages from the lecture. Michael's lecture examined the structure of the mashup ecosystem as well as implementation issues, including licensing.
On the Distribution of Rational Squares
Michael Weiss
Mathematics , 2015,
Abstract: Let $a$ be a positive integer, and let $\sigma(a)$ denote the least natural number $s$ such that an integer square lies between $s^2 a$ and $s^2 (a+1)$; let $\tau_s(a)$ denote the number of such integer squares. The function $\sigma(a)$ and the sequence $(\tau_s(a))_{s \in \mathbb{Z}^+}$ are studied, and are observed to exhibit surprisingly chaotic behavior. Upper- and lower-bounds for $\sigma(a)$ are derived, as are criteria for when they are sharp.
Embeddings from the point of view of immersion theory: Part I
Michael Weiss
Mathematics , 1999, DOI: 10.2140/gt.1999.3.67
Abstract: Let M and N be smooth manifolds without boundary. Immersion theory suggests that an understanding of the space of smooth embeddings emb(M,N) should come from an analysis of the cofunctor V |--> emb(V,N) from the poset O of open subsets of M to spaces. We therefore abstract some of the properties of this cofunctor, and develop a suitable calculus of such cofunctors, Goodwillie style, with Taylor series and so on. The terms of the Taylor series for the cofunctor V |--> emb(V,N) are explicitly determined. In a sequel to this paper, we introduce the concept of an analytic cofunctor from O to spaces, and show that the Taylor series of an analytic cofunctor F converges to F. Deep excision theorems due to Goodwillie and Goodwillie-Klein imply that the cofunctor V |--> emb(V,N) is analytic when dim(N)-dim(M) > 2.
Going Open: Does it Mean Giving Away Control?
Nadia Noori,Michael Weiss
Technology Innovation Management Review , 2013,
Abstract: Open source software has evolved from being an effort driven by a collective of volunteers to become an integral part of commercial software. Constant demands for new features besides maintaining product quality made companies seek open source as an answer for these demands. These growing demands brought with them control of quality, architecture, contribution management, and community management. This article explores the governance strategies adopted by open source software projects to manage the quality of complements (such as plug-ins that extend a platform's functionality) developed by community members outside the core team. The outcomes of the research contribute to our understanding of the strategies followed by different open source platform owners (the open source project initiators) to manage external innovation in the case of platform extensions in two areas: i) governance models and ii) regulatory tools.
Editorial: Open APIs (April 2009)
Dru Lavigne,Michael Weiss
Technology Innovation Management Review , 2009,
Abstract: A few short years ago, the term "Internet" reflected the technical savvy sitting at a workstation reading email or using a search engine to find data. Today, people of all ages are using all manner of devices to: obtain public transit directions with Google Maps, share photos using Flickr and videos using YouTube, Tweet their whereabouts, meet new friends through Facebook, and perform countless other activities which have quickly become ubiquitous to every day life. This new generation of online activities is the result of open APIs, mashups, and rich Internet applications. These concepts are the focus of the April issue of the OSBR. The authors have done an excellent job of taking the editorial theme of "Open APIs" from the mysterious realm of programming into their applicability to daily life and business.
Conformational Dynamics of Insulin
Michael A. Weiss
Frontiers in Endocrinology , 2011, DOI: 10.3389/fendo.2011.00048
Abstract: We have exploited a prandial insulin analog to elucidate the underlying structure and dynamics of insulin as a monomer in solution. A model was provided by insulin lispro (the active component of Humalog?; Eli Lilly and Co.). Whereas NMR-based modeling recapitulated structural relationships of insulin crystals (T-state protomers), dynamic anomalies were revealed by amide-proton exchange kinetics in D2O. Surprisingly, the majority of hydrogen bonds observed in crystal structures are only transiently maintained in solution, including key T-state-specific inter-chain contacts. Long-lived hydrogen bonds (as defined by global exchange kinetics) exist only at a subset of four α-helical sites (two per chain) flanking an internal disulfide bridge (cystine A20–B19); these sites map within the proposed folding nucleus of proinsulin. The anomalous flexibility of insulin otherwise spans its active surface and may facilitate receptor binding. Because conformational fluctuations promote the degradation of pharmaceutical formulations, we envisage that “dynamic re-engineering” of insulin may enable design of ultra-stable formulations for humanitarian use in the developing world.
On the algebraic $L$-theory of $Δ$-sets
Andrew Ranicki,Michael Weiss
Mathematics , 2007,
Abstract: The algebraic $L$-groups $L_*(\A,X)$ are defined for an additive category $\A$ with chain duality and a $\Delta$-set $X$, and identified with the generalized homology groups $H_*(X;\LL_{\bullet}(\A))$ of $X$ with coefficients in the algebraic $L$-spectrum $\LL_{\bullet}(\A)$. Previously such groups had only been defined for simplicial complexes $X$.
On the construction and topological invariance of the Pontryagin classes
Andrew Ranicki,Michael Weiss
Mathematics , 2009,
Abstract: We use sheaves and algebraic L-theory to construct the rational Pontryagin classes of fiber bundles with fiber R^n. This amounts to an alternative proof of Novikov's theorem on the topological invariance of the rational Pontryagin classes of vector bundles. Transversality arguments and torus tricks are avoided.
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