The impact of financial restatements on financial markets: A systematic review of the literature

Purpose: The purpose of this paper is to discuss the most relevant issues related to the impact of financial restatements in the dynamics of financial markets and identify several research gaps to be investigated in future research. Design/methodology/approach: The methodology is based on a systematic review of the literature described by Tranfield et al. (2003). The final sample includes 47 academic papers published from 1996 to 2019. Findings: Papers in this domain discuss three main topics: how the market prices the announcement of a financial restatement; how financial restatements affect the announcing firm’s cost of capital and how financial restatements affect firms’ reputation. There are several issues to explore in future research, including whether financial restatements affect the dynamics of financial markets in Europe, whether the market fully and promptly assimilates the information content of a restatement, the role of financial analysts’ information disclosures in this process or how regulators may improve the way they provide investors with timely information about firms’ restating problems. Research limitations/implications: There is always some degree of subjectivity in the definition of the keywords, search strings and selection criteria in a systematic review. These are all important aspects, as they delimitate the scope of the study and define the sample of papers to be reviewed. Practical implications: The answers to the research questions identified in this paper may provide regulators with information to improve financial accounting and reporting standards and strengthen investors’ confidence in accounting information and the dynamics of financial markets. Originality/value: This paper systematically reviews the relevant literature exploring the connection between financial restatements and the dynamics of financial markets. It contributes to the academic community by identifying several research questions that may impact the theory and practice related to accounting quality and capital markets.info:eu-repo/semantics/acceptedVersio

Population genetics and diversity structure of an invasive earthworm in tropical and temperate pastures from Veracruz, Mexico

Pontoscolex corethrurus (Müller, 1857) is an invasive tropical earthworm, globally distributed. It reproduces through parthenogenesis, which theoretically results in low genetic diversity. The analysis of the population structure of P. corethrurus using molecular markers may significantly contribute to understanding the ecology and reproductive system of this earthworm species. This work assessed the genetic diversity and population structure of P. corethrurus with 34 polymorphic inter simple sequence repeat markers, covering four populations in tropical and temperate pastures from Veracruz State. Nuclear markers distinguished two genetic clusters, probably corresponding to two distinct genetic lineages. The number of clones detected in the AC population was lower than expected for a parthenogenetic species. Also, the apparent lack of differences in population structures related to the geographic region among the populations studied may indicate that human-mediated transference is prevalent in these areas. Still, most individuals apparently belong to lineage A, and only a few individuals seem to belong to the lineage B. Thus, the admixture signatures found among the four populations of P. corethrurus may have facilitated a successful invasion by directly increasing fitness. In summary, addressing the genetic variation of P. corethrurus with ISSR markers was a suitable approach, as it evidenced the genetic diversity and relationships in the populations evaluated

Incidência de percevejos em genótipos de arroz no Tocantins.

O objetivo deste trabalho foi a avaliação da intensidade de ataque de percevejos dos grãos em diferentes genótipos de arroz irrigado tropical. Espera-se com isso que não haja diferenças estatísticas entre os genótipos avaliados

Validação da estratégia de silenciamento gênico visando indução de resistência a Meloidogyne incognita e Heterodera glycines em soja GM.

Nematoides parasitas de plantas representam o maior estresse biótico da agricultura, causando perdas anuais maiores que US$ 100 bilhões. Baseado nas limitações dos métodos de atuais de controle, o desenvolvimento de novas estratégias deve ser uma prioridade. Recentemente, a estratégia de silenciamento gênico, por interferência mediada por RNA dupla fita, tem-se mostrado muito promissora para o controle de nematoides. Nesse trabalho foi inserida em embriões de soja, pela técnica de biobalística, uma construção de RNAi correspondente a uma fusão de regiões de dois genes que codificam para fatores de processamento de mRNA de Heterodera glycines e Meloidogyne incognita, visando a obtenção de eventos de soja GM resistentes à esses fitonematoides. Para averiguar o efeito do silenciamento, 6 eventos GM foram desafiados com M. incognita. Seis semanas após a inoculação, as raízes das plantas foram avaliadas quanto à indução de resistência. Quando comparados ao tratamento controle, os eventos transgênicos mostraram uma redução signiricativa entre 71% a 92% no número de ovos por grama de raiz. Os eventos transgênicos não foram estatisticamente diferentes quando comparados entre si, exceto o evento GmFSMiHg ? 4IT3. Trabalhos publicados até o momento demonstram silenciamento in planta de 12 genes-alvo de Meloidogyne spp. ou Heterodera spp., resultando em redução de nematoides estabelecidos, fêmeas em desenvolvimento e/ou número de ovos de 68-95% em relação ao controle. Os resultados aqui apresentados mostram claramente a capacidade da soja transgênica em reduzir o potencial reprodutivo de M. incognita por meio de silenciamento gênico. A completa redução de M. incognita continua a ser o objetivo final, mas a redução parcial, como observado no bioensaio, pode ter aplicações importantes no controle de NFGs

Analysis of Sagunto Ibero-Roman votive bronze statuettes by portable X-ray fluorescence

The main objective of this work was the study of chemical composition of an important collection of Ibero- Roman votive bronze statuettes exposed in the Archaeological Museum of Sagunto (Spain). Precision and accuracy of the measurements were obtained developing a proper analytical method, also avoiding any possible damage to the studied objects using a portable energy dispersive X- ray fluorescence system. Principal Components Analysis (PCA) to discriminate between groups based on ratios Fe/Cu, Pb/Cu, Sn/Cu, Ag/Cu, Ni/Cu and Impurities/Cu were employed to observe differences between the used smelting, manufacturing processes and raw materials. The characterisation of bronze statuettes cross-referenced with archaeological data, gave important suggestions to clarify issues regarding manufacturing processes, quality and chronologies of the studied objects

Nuclear Tracks Morphology Study Using Raman Methodology

In this work, a new methodology for rendering profiles of etched nuclear tracks is presented, using confocal micro-Raman spectrometry instrumentation. The precise profile of etched nuclear tracks with normal and/or angular incidence of the particle can be determined in few minutes, with a great visual and numerical resolution, that means a quantitative and qualitative simultaneous chemical and morphology characterization with the Raman technique. The Raman image routine is designed to acquire at each image pixel a complete Raman spectrum. This is a mapping of the functional groups that form the polymeric structure, which may be broken by the damage caused by the incident radiation and/or the etching process

Digitalización en la ONG Afrikable y su entorno

El presente proyecto, motivado por la ejecución de la asignatura académica 'prácticas externas' en Lamu (Kenia) y con la finalidad de conocer más sobre esta economía emergente, quiere demostrar el funcionamiento de la ONG Afrikable y encontrar puntos de mejora, sobre todo, en la gestión y procesamiento de la información en el ámbito digital. Para realizar un estudio completo, se pondrán en contexto todos los factores internos y externos que influyen directamente en la actividad diaria de la organización, para así ver las oportunidades que ofrece el mercado de este rincón de África y la capacidad de la entidad en aplicar las distintas técnicas. Para dicha búsqueda, se utilizarán varias herramientas de análisis: modelos de madurez, matriz DAFO, encuestas... Afrikable , básicamente, quiere encontrar una solución que pueda facilitar el control de las tareas correspondientes al departamento de Comercio Justo porque tiene intención de empezar a ampliar su marketplace y vender sus productos en nuevas zonas de Kenia. Siguiendo esta petición, se rastreará el mercado de los ERPs y POS para estudiar la viabilidad de la implementación de un sistema de parecidas características

Comportamento de cultivares comerciais de arroz de terras altas e irrigado frente à infestação de pragas.

O objetivo deste trabalho foi avaliar as diferenças de infestação de percevejos dos grãos nas diferentes cultivares de arroz. Além disso, foi avaliada a intensidade de ataque de roedores nos materiais utilizados no experimento