Elucidating the diel and seasonal calling behaviour of Elachistocleis matogrosso (Anura: Microhylidae)

ABSTRACT

Acoustic monitoring provides the opportunity to study ecological processes that are difficult to assess with traditional surveys. Elachistocleis matogrosso is an anuran species, described in 2010, for which limited biological information is available. This study investigated the calling activity of the species in the north-eastern portion of the Pantanal, Brazil, a wetland area with marked seasonality between the dry and wet seasons. The calling activity of E. matogrosso was monitored using automated digital recorders in combination with automated signal recognition software over two different annual cycles. The species was vocally active only during the wet season (October – April), with a peak in November-December during the 2013–2014 annual cycle and in February-March during the 2015–2016 annual cycle. The peak calling activity occurred at dusk. This species has nocturnal habits and an explosive breeding activity. The detection of the species was intermittent, which suggests that environmental predictors or site-specific conditions might play an important role in species detection. Moreover, this intermittent occupancy indicated that surveys that employ traditional field techniques would likely fail to detect this species. We describe an effective protocol for detecting E. matogrosso with acoustic monitoring, which requires recording during 20 days in February from 17:01 to 05:00. Our procedure would be easy to adapt to other anuran species, and it could be used for investigating new localities and assessing population changes over time.     

SD卡车载录像机专用操作控制电路设计

介绍了用于某SD卡车载录像机操作控制电路硬件和软件的设计,指出该设计基于高速低功耗MSP430单片机系统,减少了硬件电路的复杂程度,注意了所有与控制相关的输入、输出信号的完备性,考虑到了硬软件配合的简约化以减少成本,其软件程序借助定时中断既防止了漏键问题,也解决了主程序等待按键可能产生的CPU运行阻塞现象。     

凸轮—摆杆式全自停机构的分析和优化设计

本文对日本盒式录音机的一种全自停机构作了研究。阐明这种包含摩擦副、具有两个输入件和两种输出状态的组合机构的功能和运动特点,进行了运动分析和力分析,对凸轮极限转速、响应时间、最小摩擦力矩和弹簧力的取值范围作了深入探讨,并提出按响应时间和最大加速度多目标优化设计的方法。     

收录机装配流水线的工作研究

本文以收录机装配流水线工作研究为例，讨论了工作研究在流水线上应用的步 骤和方法。在基本不增加投资情况下，通过工作研究使流水线效率从４２．７ ％提高到 　８３．７８％，日产量由原来的１０２台提高到２０４台。本方法可以在其他流水线上普遍推 广应用。     

一种智能型数字电子记录傻的设计

进口的机械式记录仪，这种记录仪在使用过程中存在如卡纸、卡笔等缺点和不足。针对这些问题，提出了基于捣固车的数字多通道记录仪的设计和实现方案：记录仪采用分层控制的硬件结构。以Windows CE嵌入式系统作为系统平台，以主、子线程结构和数据驱动方式实现记录软件的实时记录与控制。     

降水量自动采集中的干扰分析和处理

介绍了降水量测量的几种方式和翻斗式雨量计的计量原理，并针对翻斗式雨量计使用过程中的出现的问题作了分析，给出了几种解决的方法。     

读取数据库的DBF文件通用算法分析

本文分析了ＤＢＦ文件的结构，讨论了真实记录和虚拟记录的关系，给出了记录长度和文件结构说明长度之间的数学表达式，按这种算法编写的程序具有通用性。     

THE HARDWARE ＆ SOFTWARE DESIGN AND IMPLEMENTATION OF A NEW TYPE INTERFACE FOR THE CASSETTE TAPE RECORDER

This paper analyzes in detail the operating principle and characteristics of hardware and software of a new type interface for the cassette tape recorder, which has been developed by this author for the 8097BH target prototype machine. It discusses the design of the audio cassette tape recording format and some important aspects which must be taken care of in software for reading the cassette tape. The paper also illustrates debugging methods thoroughly.     

D－5格式数字录像机

对Ｄ-５格式分量数字录像机的主要内容进行介绍和分析，并较详细地阐述了其功能、特点．     

DataSocket技术在分布式故障录波系统中的应用

用通常的方法实现测控数据的网络传输，编程复杂，难度大，DataSocket技术可以很好地解决这个问题．对DataSocket技术进行了简要介绍．同时给出了用DataSocket技术实现分布式故障录波系统信息传输的具体方法，较好地解决了分布式故障录波系统的信息开放性问题．