Approaches to estimating the universe of natural history collections data

This contribution explores the problem of recognizing and measuring the universe of specimen-level data existing in Natural History Collections around the world, in absence of a complete, world-wide census or register. Estimates of size seem necessary to plan for resource allocation for digitization or data capture, and may help represent how many vouchered primary biodiversity data (in terms of collections, specimens or curatorial units) might remain to be mobilized. Three general approaches are proposed for further development, and initial estimates are given. Probabilistic models involve crossing data from a set of biodiversity datasets, finding commonalities and estimating the likelihood of totally obscure data from the fraction of known data missing from specific datasets in the set. Distribution models aim to find the underlying distribution of collections’ compositions, figuring out the occult sector of the distributions. Finally, case studies seek to compare digitized data from collections known to the world to the amount of data known to exist in the collection but not generally available or not digitized. Preliminary estimates range from 1.2 to 2.1 gigaunits, of which a mere 3% at most is currently web-accessible through GBIF’s mobilization efforts. However, further data and analyses, along with other approaches relying more heavily on surveys, might change the picture and possibly help narrow the estimate. In particular, unknown collections not having emerged through literature are the major source of uncertainty

Measures of collaborative venture performance: An analysis of construct validity

This study presents a methodology to evaluate the construct validity of measures of collaborative venture (CV) performance and applies it to a sample of 69 CVs. After discussing content validity of the different measures, empirical results show that subjective measures of CV performance are reliable and present convergent validity. Results also support their discriminant validity with respect to other measures such as contractual changes, but not to longevity; no conclusive evidence is found with respect to survival.methodology; collaborative venture;

Testing Assumptions about Evaluating Strategic Alliance Performance

Researchers have used a variety of measures to evaluate strategic alliance performance. In this paper we use data collected on performance of R&D consortia in the U.S. and of Spain-based equity and non-equity dyadic alliances to investigate empirically five basic assumptions made by strategic alliance researchers. We find that while several assumptions are supported, others are not. Results are consistent across samples. We conclude with recommendations for how to evaluate performance in future research into strategic alliances.strategic alliances; performanca evaluation; equity alliances; consortia;

Alliance contractual design

Our purpose in this paper is to provide an overview of what we know about alliance contracts. After a short introduction to the contents of alliance contracts, we start by contrasting alliance contractual form and governance form. Next, we focus on two related constructs: contractual complexity and contractual completeness. We suggest that contractual complexity is a more adequate construct to investigate in the absence of information about the transaction contemplated in the contract. After that, we present the measures of contractual complexity used in past studies. Then, we go over the determinants of contractual complexity by considering their influence on contracting costs and benefits given environmental and behavioral uncertainty. Conclusions and suggestions for research are offered at the end.alliance contracts; collaborative relationships; contractual complexity; strategic alliances; cooperation; joint ventures;

Contractual heterogeneity in strategic alliances.

We investigate firms' alliance design choices by examining alliances as multifaceted contractual forms. The analysis explores the contractual heterogeneity underlying alternative governance structures for alliances, the bundling of different contractual provisions, and the dimensionality of the contractual completeness construct. The empirical evidence indicates that the complexity of collaborative agreements ­in terms of the number and stringency of provisions­ is greater for alliances that are strategically important and that involve high levels of asset specificity. Factor analysis of tetrachoric correlations among eight contractual provisions reveals two distinct dimensions of contractual completeness. Partners with prior collaborative relationships tend to institute fewer contractual provisions for monitoring and control of an alliance. Relative to open-ended contractual agreements, time-bound alliances tend to rely less heavily on such provisions, but more so on safeguards concerning confidential and proprietary information, alliance termination, and the adjudication of disputes by third parties.alliance design; governance structures; collaborative agreements; alliance termination;

Governance changes in strategic alliances: Antecedents of contractual renegotiations

This study provides an empirical investigation of the incidence and antecedents of contractual renegotiations in strategic alliances. We bring together initial conditions based on transaction cost theory and ex post contingencies highlighted by recent conceptual and qualitative research on the evolution of collaborative agreements. The results indicate that firms tend to change the governance of alliances when a misalignment exists between the chosen structure and features of the transaction. Further, we find that asset specificity affects alliance design as well as post-formation governance decisions. Contractual alterations are more likely in the presence of strategic change and when firms employ less extensive ex post deterrents in their alliances. We find no evidence that cross-border ventures are any more or less likely to experience contractual renegotiations than domestic alliances.Strategic alliances; renegotiation

Using NLP tools in the specification phase

The software quality control is one of the main topics in the Software Engineering area. To put the effort in the quality control during the specification phase leads us to detect possible mistakes in an early steps and, easily, to correct them before the design and implementation steps start. In this framework the goal of SAREL system, a knowledge-based system, is twofold. On one hand, to help software engineers in the creation of quality Software Requirements Specifications. On the other hand, to analyze the correspondence between two different conceptual representations associated with two different Software Requirements Specification documents. For the first goal, a set of NLP and Knowledge management tools is applied to obtain a conceptual representation that can be validated and managed by the software engineer. For the second goal we have established some correspondence measures in order to get a comparison between two conceptual representations. This information will be useful during the interaction.Postprint (published version

The Synonym management process in SAREL

The specification phase is one of the most important and least supported parts of the software development process. The SAREL system has been conceived as a knowledge-based tool to improve the specification phase. The purpose of SAREL (Assistance System for Writing Software Specifications in Natural Language) is to assist engineers in the creation of software specifications written in Natural Language (NL). These documents are divided into several parts. We can distinguish the Introduction and the Overall Description as parts that should be used in the Knowledge Base construction. The information contained in the Specific Requirements Section corresponds to the information represented in the Requirements Base. In order to obtain high-quality software requirements specification the writing norms that define the linguistic restrictions required and the software engineering constraints related to the quality factors have been taken into account. One of the controls performed is the lexical analysis that verifies the words belong to the application domain lexicon which consists of the Required and the Extended lexicon. In this sense a synonym management process is needed in order to get a quality software specification. The aim of this paper is to present the synonym management process performed during the Knowledge Base construction. Such process makes use of the Spanish Wordnet developed inside the Eurowordnet project. This process generates both the Required lexicon and the Extended lexicon that will be used during the Requirements Base construction.Postprint (published version

Alliance dynamics for entrepreneurial firms

Small firms are thought to encounter various difficulties implementing strategic alliances. Due to these problems, they may be less able to reap the benefits of alliance adaptation, and the changes that occur in alliances over time often will not coincide with the small firm's interests. The evidence we present on contractual renegotiations in alliances suggests that small firms are no more or less likely to experience contractual changes in general. However, small firms tend to bear inefficiencies of two kinds in their collaborations. They are less likely to adapt alliances in the presence of governance misalignments. Furthermore, they are prone to make greater transaction-specific investments without commensurate contractual safeguards, which can lead to ex post hold-up in the form of contractual renegotiations.strategic alliances; entrepreneurial firms; small firms; contractual renegotiation; governance misalignment;