English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We compared the open and the sealed bid auctions used for procurement transaction at the electronic platform Bolsa Eletronica de Compras (BEC) of Sao Paulo state using data from refined sugar purchases between 2008 and 2011. The sealed bid generates lower prices in about 3% compared to the open auction. Under the independent private values paradigm, we adopted asymmetric bidders and risk aversion. We recover with structural econometrics the cumulative distribution functions of cost of potential bidders and we found evidence we can fit reasonably well our data, although we cannot reject collusion or behaviors generated by online auctions. Key-words: Industrial Organization, Econometrics, Auction, Procurement Auction Lista de ilustracoes Figura 1 – Sazonalidade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Figura 2 – Ranking dos licitantes . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Figura 3 – Densidade de Micro e Pequenas empresas versus outras empresas . . . 38 Figura 4 – Exemplos de comportamento dos licitantes . . . . . . . . . . . . . . . . 39 Figura 5 – Competicao em alguns meses com base na frequencia de vitorias dos licitantes em meses anteriores . . . . . . . . . . . . . . . . . . . . . . . 40 Figura 6 – Histograma sobre especializacao no formato de licitacao . . . . . . . . . 41 Figura 7 – Funcao distribuicao acumulada estimada para cada tipo de licitante . . 53 Figura 8 – Funcao densidade estimada para cada tipo de licitante . . . . . . . . . 54 Figura 9 – Funcao melhor resposta de cada tipo de licitante . . . . . . . . . . . . 56

Leilão aberto versus leilão selado: evidência com dados brasileiros de compras governamentais