A new pterosaur tracksite from the Lower Cretaceous of Wuerho, Junggar Basin, China: inferring the first putative pterosaur trackmaker

We report the discovery of 114 small pterosaur footprints preserved in a greyish-green fine sandstone slab comprising 57 manus imprints and 57 pes imprints. Due to the chaotic distribution of footprints, the trackways are difficult to recognize. The pes imprints are sub-triangular and enlongate, the metatarsal part is roughly subequal to the digital part. The manus imprints are asymmetrical, longer than wide, and the lengths of digits I–III gradually increase. According to the diagnostic features of the Wuerho small pterosaur tracks, the present set was classified as Pteraichnus and is different from the nine reported valid ichnospecies of Pteraichnus. We therefore propose a new ichnospecies, Pteraichnus wuerhoensis isp. nov. The description is based on the anatomical characteristics (lengths of digits I–IV, length of digital part, length of metatarsal part) extracted from the pes imprints and comparisons with the pes bone fossils of Noripterus complicidens. We infer that the footprints were probably left by N. complicidens and the total width of the wings was presumably 2–2.3 m. In addition, the high density (365 per square meter) and varied sizes of the Wuerho small pterosaur tracks suggest that many pterosaurs of different ages lived in Huangyangquan Reservoir tracksite 1 area. Thus the trackmakers may have had gregarious behavior.

STUDY OF METHODS FOR REDUCING POWER CONSUMPTION AND AREA FOR A DIGITAL PART OF THE RFID-TAG

The results of the development of a digital part for the low-frequency RFID tag and the results of power saving methods study in 180 nm, 90 nm and 45 nm CMOS processes are presented. Using of the presented methods allows to reduce the power consumption and area of the digital part by 400 % and by 50 %, respectively. For the target 180 nm CMOS process the maximum dynamic power is less than 1 μW, and the occupied area is 0.042 mm2.

JORNALISMO REGIONAL NAS REDES SOCIAIS: a cobertura político-eleitoral na fanpage do jornal o estado do Maranhão

Este artigo apresenta uma análise sobre como o jornal O Estado do Maranhão (MA) se apropria da sua página no Facebook como espaço para difundir conteúdo jornalístico. A abordagem metodológica é quantitativa e qualitativa a partir da análise do conteúdo de 608 posts extraídos da fanpage do jornal e de entrevista com a responsável pela versão digital do veículo. A pesquisa tem por objetivo analisar as características dos conteúdos distribuídos pela rede social, especialmente observando o espaço destinado para temas políticos e eleitorais. A análise trabalha com as seguintes características: temas, tema eleitoral, abrangência, valência e interação. Como resultado principal ressalta-se que O Estado do Maranhão concedeu espaço considerável para o tema político-eleitoral, com baixa presença de entretenimento. PALAVRAS-CHAVE: Jornalismo; redes sociais; eleições. ABSTRACT This article presents an analysis of how the newspaper O Estado de Maranhão (MA) appropriates the Facebook page as a space for disseminating journalistic content. The methodological approach is quantitative and qualitative from the content analysis of 608 posts extracted from the fanpage of the newspaper and interview with the responsible for digital part of the vehicle. The research aims to analyze the characteristics of the contents distributed by the social network, especially observing the space destined for electoral subjects. The analysis discuses these characteristics: themes, electoral theme, scope and engagement. As a main result, O Estado do Maranhão granted considerable space for the political-electoral theme. KEYWORDS: journalism; social networks; elections. RESUMEN Este artículo presenta un análisis sobre cómo el diario El Estado de Maranhão (MA) se apropia de su página en Facebook como espacio para difundir contenido periodístico. El enfoque metodológico es cuantitativo y cualitativo a partir del análisis del contenido de 608 posts extraídos de la fanpage del periódico y de entrevista con la responsable de la parte digital del vehículo. La investigación tiene por objetivo analizar las características de los contenidos distribuidos por la red social, especialmente observando el espacio destinado a temas electorales. El análisis trabaja con las siguientes características: temas, tema electoral, alcance y la relación com os lectores. Como resultado principal se resalta que el Estado de Maranhão concedió espacio considerable para el tema político-electoral. PALABRAS CLAVE: periodismo, redes sociales, elecciones.

Multi-Chip Module Design of a MEMS Air Pressure Sensor

A MEMS air pressure sensor system is proposed in the paper, which can monitor the air pressure by means of measuring the discharge time of the sensor. The system contains two parts: the MEMS air pressure sensor and the data acquisition system. The MEMS air pressure sensor is an enhanced pizeoresistive pressure sensor. The data acquisition system contains a time-to-digital part, which measures time interval by using of the propagation delays of logical gates. The time-to-digital part can measure the resistors’ discharge time and turn it into digital output, when the resistors on the air pressure sensor are connected to a capacitor which is full of charge. The discharge time is only related to the resistor, and then the pressure measurement is changed to time measurement. The digital output is shown through a liquid crystal display screen.