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| 1 | Variable retention in Tasmania, Australia: trends over 16 years of monitoring and adaptive management显示文摘Background:Variable retention harvesting using aggregated retention(ARN)has been applied in some Tasmanian wet eucalypt forests for>15 years.Implementation of ARN in Tasmania differs from most other regions,as forest influence(or the proximity of harvested areas to long-term retention)is primarily used to distinguish ARN from clearfelling rather than retention level,and broadcast burning is used as a regeneration treatment,resulting in a preference for edge aggregates instead of isolated retained islands.Clear emphasis on site-level retention of biological legacies and forest influence to facilitate re-establishment of mature forest species ensures that ARN coupes achieve the ecological objectives associated with retention forestry.Results:Spatial and survey data collected from operational ARN coupes illustrates the development of this silvicultural practice over time and allows comparisons with conventional clearfelling.Over 90%of ARN coupes have met the forest influence target of>50%.The number of ARN coupes harvested per year has varied,but mean retention levels(29%)and the mean area harvested per coupe(24 ha)have remained the same.Forest influence in ARN coupes has decreased over time,as have perimeter-to-area ratios,largely due to a decrease in the number of island aggregates.Although these measures of complexity have decreased,ARN coupes still have much greater forest influence,retention,and perimeter-to-area ratios when compared to conventional clearfell,burn and sow(CBS)coupes.The observed decrease in boundary complexity should facilitate regeneration burning in ARN coupes,although no increase in the proportion of burnt seedbed was observed.The proportion of burnt seedbed is strongly correlated with eucalypt seedling stocking and density in ARN coupes,and these attributes were all significantly lower in recent ARN coupes compared to clearfells.These differences appear to be due to achieving better burns in recent CBS coupes,rather than poorer ones in ARN coupes.Conclusions:Although the area that can feasibly be harvested by ARN is limited by the requirement for regeneration burning,ARN provides clear biodiversity benefits and satisfactory silvicultural outcomes and is now firmly embedded as a viable alternative to clearfelling in Tasmanian wet eucalypt forests. | Robyn E.Scott Mark G.Neyland Susan C.Baker | 2019 | Ecological Processes2019，8，1： | 5 |
| 2 | Chopper-modulated gas chromatography electroantennography enabled using high-temperature MEMS flow control device显示文摘We report the design,fabrication and characterization of a microelectromechanical systems(MEMS)flow control device for gas chromatography(GC)with the capability of sustaining high-temperature environments.We further demonstrate the use of this new device in a novel MEMS chopper-modulated gas chromatography-electroantennography(MEMS-GC-EAG)system to identify specific volatile organic compounds(VOCs)at extremely low concentrations.The device integrates four pneumatically actuated microvalves constructed via thermocompression bonding of the polyimide membrane between two glass substrates with microstructures.The overall size of the device is 32 mm×32 mm,and it is packaged in a 50 mm×50 mm aluminum housing that provides access to the fluidic connections and allows thermal control.The characterization reveals that each microvalve in the flow control chip provides an ON to OFF ratio as high as 1000:1.The device can operate reliably for more than 1 million switching cycles at a working temperature of 300℃.Using the MEMS-GC-EAG system,we demonstrate the successful detection of cis-11-hexadecenal with a concentration as low as 1 pg at a demodulation frequency of 2 Hz by using an antenna harvested from the male Helicoverpa Virescens moth.In addition,1μg of a green leafy volatile(GLV)is barely detected using the conventional GC-EAG,while MEMS-GC-EAG can readily detect the same amount of GLV,with an improvement in the signal-to-noise ratio(SNR)of~22 times.We expect that the flow control device presented in this report will allow researchers to explore new applications and make new discoveries in entomology and other fields that require high-temperature flow control at the microscale. | Ming-Da Zhou Muhammad Akbar Andrew J.Myrick Yiqiu Xia Waleed J.Khan Xiang Gao Thomas C.Baker Si-Yang Zheng | 2017 | Microsystems & Nanoengineering2017，3，1： | 2 |
| 3 | PCB布线设计显示文摘 | Bonnie C.Baker | 2003 | 电子设计应用2003，，10： | 2 |
| 4 | PCB布线设计(之五)显示文摘 | Bonnie C.Baker | 2004 | 电子设计应用2004，，2： | 1 |
| 5 | 模拟电路噪声的来源和消除显示文摘模拟电路噪声的消除更多地依赖于经验而非科学依据。设计人员经常遇到的情况是电路的模拟硬件部分设计出来以后,却发现电路中的噪声太大,而不得不重新进行设计和布线。这种“试试看”的设计方法在几经周折之后最终也能获得成功。不过,避免噪声问题的更好方法是在设计初期进行决策时就遵循一些基本的设计准则,并运用与噪声相关的基本原理等知识。本文将探讨12位A/D转换系统中的不同噪声源(包括器件噪声、发射噪声和传导噪声)及其消除方法。 | Bonnie C.Baker | 2005 | 今日电子2005，，5： | 1 |
| 6 | 为低通滤波器选择合适的放大器显示文摘为有源低通滤波器电路选择合适的单电源运算放大器是件比较麻烦的事,本文将讨论如何为滤波器电路选择合适的放大器。 | Bonnie C.Baker | 2004 | 电子设计应用2004，，12： | 1 |
| 7 | Sex and Age Effects on Willingness to Communicate, Anxiety, Perceived Competence, and L2 Motivation Among Junior High School French Immersion Students显示文摘 | Peter D.MacIntyre Susan C.Baker RichardClément Leslie A.Donovan | 2003 | Language Learning2003，，1： | 1 |
| 8 | Human Invasion by Lesser Known Medically Important Trematodes in the Proximity of Tshwane,Gauteng Province,South Africa显示文摘It is well-documented that digenetic trematodes exhibit complex life cycles where the definitive hosts are vertebrates—mostly birds,other mammals and reptiles.It is also known that digenetic trematodes are host specific,but changes in our feeding habits, agricultural and social practices,have led to human beings infected with parasites that were previously regarded to be of no or insignificant medical importance. The objective of this study was to identify the less known digenetic parasites in the water bodies around Tshwane that may result in possible | E.B.E.Moema P.H.King C.Baker | 2009 | 地学前缘2009，16，S1： | 1 |
| 9 | 数据采集系统中滤波器的选择显示文摘从频率的角度设计滤波器电路,必须考虑诸如滤波器带宽设 计和阶数(极点的数量)之类的问题。本文将向您介绍能帮助确定 低通滤波器的极点数量、逼近类型和一些电路拓扑的技术。 | Bonnie C.Baker | 2004 | 电子设计应用2004，，11： | 1 |
| 10 | PCB布线设计(之二)显示文摘 | Bonnie C.Baker | 2003 | 电子设计应用2003，，11： | 0 |
| 11 | 如何更好地使用SPICE工具显示文摘有人说对您的摸拟数字电路进行计算机仿真非常重要,这是因为您可以使用特定的计算机SPICE程序(集成电路模拟的仿真程序)进行模拟仿真或使用IBIS程序(I/O缓冲信息规范)进行数字仿真,以此来减少初始错误并缩短开发时间。如果您正确地使用仿真器,那么您在查看电路试验板之前就能找出电路错误和各电路之间的细微差别。在开始仿真以前,确定您期望的电路性能是正确使用这些工具的第一步,然后开始您的电路仿真。使用这种方法,您就可以事先检验您的电路设计,而不用花费时间去实际焊接电路。 | Bonnie C.Baker | 2008 | 电子设计技术 EDN CHINA2008，15，10： | 0 |
| 12 | 用数字电位器替代机械式电位器(下)显示文摘偏置调节电路
在模拟电路中,可通过简单分压器或完全可调参考电压,向信号路径加电压来进行偏置调节.在图8和图9中,用数字电位器改变简单放大器电路中的偏置误差.其中,放大器配置为反相.输入信号VIN的传递函数为: | Bonnie C.Baker | 2003 | 世界电子元器件2003，，9： | 0 |
| 13 | PCB布线设计(之六)显示文摘 | Bonnie C.Baker | 2004 | 电子设计应用2004，，3： | 0 |
| 14 | △∑转换器中的转换时延显示文摘小信号传感器通常生成慢速移动的DC信号。对这类传感器来说,△∑ADC就可以作为完整的高分辨率、低噪声解决方案,而无需大部分模拟输入电路。一些系统采用多个传感器,这些传感器要求输出端带多路复用器的高分辨率、低噪声ADC相匹配。例如,汽车诊断应用就是一种多路夏用传感器系统,其通过焱多小信号传感器监控温度、胎压、气囊就绪情况等(如图1所示)。 | Bonnie C.Baker | 2007 | 电子产品世界2007，14，12： | 0 |
| 15 | Impact of surgical volume and resident involvement on patency rates after vasectomy reversaldA 14-year experience in an open access system显示文摘Objective:Evaluate the influence of fellowship training,resident participation,reconstruction type,and patient factors on outcomes after vasectomy reversals in a high volume,open access system.Methods:Retrospective review of all vasectomy reversals performed at a single institution from January 1,2002 to December 31,2016 was conducted.Patient and spouse demographics,patient tobacco use and comorbidities,surgeon training and case volume,resident participation,reconstruction type,and postoperative patency were collected and analyzed.Results:Five hundred and twenty-six vasectomy reversals were performed during the study period.Follow-up was available in 80.6%of the cohort and overall patency,regardless of reconstruction type was 88.7%.The mean time to reversal was 7.87 years(range of 0-34 years).The majority of cases included resident participation.Case volume was high with faculty and residents logging a mean of 37.0 and 38.7(median 18 and 37)cases respectively.Bilateral vasovasostomy was the most common reconstruction type(83%)and demonstrated a significantly better patency rate(89%)than all other reconstructions(p=0.0008).Overall patency and patency by reconstruction type were not statistically different among faculty surgeons and were not impacted by fertility fellowship training,resident participation or postgraduate year.Multivariate analysis demonstrated that increased time to reversal and repeat reconstructions had a negative impact on patency(p=0.0023 and p=0.043,respectively).Conclusions:Surgeons with a high volume of vasectomy reversals have outcomes consistent with contemporary series regardless of fellowship training in fertility.Patency was better for bilateral vasovasostomies.Patency was not negatively impacted by tobacco use,comorbidities,resident participation,or post-graduate year. | Alexandria M.Hertz Andrew W.Stamm Mark I.Anderson Karen C.Baker | 2021 | Asian Journal of Urology2021，8，2： | 0 |
| 16 | 牛呼吸道合胞体病:免疫病理学机制显示文摘牛呼吸道合胞体病毒(BRSV)是犊牛呼吸道疾病的重要病因,与人呼吸道 包体病毒(HRSV)及其相应的疾病有许多相似性,故认为免疫病理学机制参与了呼吸道合胞体病毒(RSV)感染的致病作用,本文分析了免疫病理学机制在RSV感染和疫苗诱导超敏反应中的作用,讨论了与RSV感染的非免疫病理学机制。 | John C.Baker | 1991 | 国外兽医学(畜禽传染病)1991，11，4： | 0 |
| 17 | 放大器偏移失衡?显示文摘你是否曾经花费许多时间选择电路适合的运算放大器,只为了了解偏移电压在制造商的基准检验输入下是否有误?事实上,偏移电压(offset voltage)比应用电路的规格高出10倍!这时应该怎么处理?是要将芯片送交失效分析?或者不理会芯片并且重新选择可用的放大器?笔者会建议设计人员再次查看放大器的规则,尝试找出偏移误差的原因。 | Bonnie C.Baker | 2011 | 电子与电脑2011，，1： | 0 |
| 18 | Comparative sensitivity to environmental variation and human disturbance of Asian tapirs (Tapirus indicus) and other wild ungulates in Thailand显示文摘Southeast Asia’s tropical forests suffer the highest rates of deforestation and disturbance of any on Earth,with poorly understood impacts on native fauna.Asian tapirs(Tapirus indicus)are among the least studied of the large mammals in these forests.Using records from 9 camera trap surveys in 7 of the largest(>1000 km2)pro-tected area complexes,we assessed the influence of environmental variation and human-induced disturbance on tapir occurrence.Tapirs were detected at 13%of locations sampled,significantly associated with evergreen for-est(P<0.001).A multiple logistic regression model predicted tapir presence 87%of the time.According to this model,tapir occurrence was positively influenced by annual rainfall and proximity to the forest edge.Howev-er,tapirs may not avoid edges but instead prefer wetter evergreen forest,a habitat type that tended to occur fur-ther from the forest edge at higher elevations in our particular study sites(P<0.001).By comparison,4 other wild ungulate species that share habitats with tapirs showed a range of differing responses.Tapirs are expect-ed to be less sensitive to disturbance because they are not targets for hunting and trade,and are almost entire-ly active at night,so avoid peak traffic periods in parks.Tapir populations in Thailand may be more stable than in other parts of their global range because rates of forest loss have decreased>40%over the past 20 years.We recommend surveys to fill gaps in the understanding of the status in lesser-known protected areas,research to better understand the fine-scale environmental influences on behavior and habitats of tapirs,and other forest un-gulates,and continued legal status for tapirs in the highest category of protection. | Antony J.LYNAM Naruemon TANTIPISANUH Wanlop CHUTIPONG Dusit NGOPRASERT Megan C.BAKER Passanan CUTTER George GALE Shumpei KITAMURA Robert STEINMETZ Ronglarp SUKMASUANG Somying THUNHIKORN | 2012 | Integrative Zoology2012，7，4： | 0 |
| 19 | 用单一ADC提取AC信号并对它实现数字化显示文摘在单电源环境下不牺牲数字化转 换器的输入动态范围来抑制一 个信号的无用部分,这始终是一个复杂问题。这些无用信号在信号通路中可能取两种形式中的一种:出现在差分通路的两条支路上,在这种情况下为了抑制这些信号需要一差分输入级;在单端信号通路中作为消隐脉冲电压出现。这后一种更难处理的情况大部分发生在运放的输出端,而信号重叠在2~2.5V消隐脉冲电压上。在模拟域中为了保证感兴趣的信号不被箝位到低于地电压。 | Bonnie C.Baker 冰 | 1997 | 电子产品世界1997，4，9： | 0 |
| 20 | 使运算放大器的噪声性能与ADC匹配显示文摘 | Bonnie C.Baker | 2006 | 电子产品世界2006，13，08S： | 0 |
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