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11篇 您的检索式:作者名="Annukka"
    题名 作者 年代 出处 被引量
1Determinants and consequences of internal control in firms: a contingency theory based analysis显示文摘Annukka Jokipii 2010Journal of Management & Governance2010,,2:3
2National centralization of biliary atresia care to an assigned multidisciplinary team provides high-quality outcomes显示文摘Hanna Lampela Annukka Ritvanen Silja Kosola Antti Koivusalo Risto Rintala Hannu Jalanko Mikko Pakarinen 2012Scandinavian Journal of Gastroenterology2012,,1:1
3Biochemistry and Clinical Role of Trypsinogens and Pancreatic Secretory Trypsin Inhibitor显示文摘Annukka Paju Ulf-H?kan Stenman 2006Critical Reviews in Clinical Laboratory Sciences2006,,2:1
4The effect of left and right poses on the expression of facial emotion显示文摘Michael E.R. Nicholls Bradley J. Wolfgang Danielle Clode Annukka K. Lindell 2002Neuropsychologia2002,,10:1
5The effects of postnatal maternal depression and anxiety on the processing of infant faces显示文摘Adriane Arteche Jutta Joormann Allison Harvey Michelle Craske Ian H. Gotlib Annukka Lehtonen Nicholas Counsell Alan Stein 2011Journal of Affective Disorders2011,,1:1
6Determinants and consequences of internal con- trol in firms : a contingency theory based analysis 显示文摘Annukka Jokipii 2010Journal of Management & Governance2010,,2:1
7Determinants and consequences of internal control in firms: a contingency theory based analysis显示文摘Annukka Jokipii 2010J Manag Gov2010,,14:1
8Junctional Adhesion Molecule-A Is Required for Hematogenous Dissemination of Reovirus显示文摘Annukka AR Jennifer A Konopka L 2009Cell Host Microbe2009,5,:1
9Adaptive and cross - adap- tive responses of persistent and non - persistent Listeria monocyto- genes strains to disinfectants 显示文摘Janne L Tiina A Annukka M 2003Int J Food Microbiol2003,82,3:1
10Epiphytic macrolichen conenunity correlates with modeled air pollutants and forest conditions显示文摘Audrey L M Leena V Ncora N Annukka L 2009Ecological Indicators2009,9,:1
11Inventory of aspen trees in spruce dominated stands in conserva-tion area显示文摘Background: The occurrence of aspen trees increases the conservation value of mature conifer dominated forests.Aspens typically occur as scattered individuals among major tree species, and therefore the inventory of aspens is challenging.Methods: We characterized aspen populations in a boreal nature reserve using diameter distribution, spatial pattern, and forest attributes: volume, number of aspens, number of large aspen stems and basal area median diameter. The data were collected from three separate forest stands in Koli National Park, eastern Finland. At each site, we measured breast height diameter and coordinates of each aspen. The comparison of inventory methods of aspens within the three stands was based on simulations with mapped field data. We mimicked stand level inventory by locating varying numbers of fixed area circular plots both systematically and randomly within the stands. Additionally, we also tested if the use of airborne laser scanning(ALS) data as auxiliary information would improve the accuracy of the stand level inventory by applying the probability proportional to size sampling to assist the selection of field plot locations.Results: The results showed that aspens were always clustered, and the diameter distributions indicated different stand structures in the three investigated forest stands. The reliability of the volume and number of large aspen trees varied from relative root mean square error figures above 50% with fewer sample plots(5–10) to values of25%–50% with 10 or more sample plots. Stand level inventory estimates were also able to detect spatial pattern and the shape of the diameter distribution. In addition, ALS-based auxiliary information could be useful in guiding the inventories, but caution should be used when applying the ALS-supported inventory technique.Conclusions: This study characterized European aspen populations for the purposes of monitoring and management of boreal conservation areas. Our results suggest that if the number of sample plots is adequate,i.e. 10 or more stand level inventory will provide accurate enough forest attributes estimates in conservation areas(minimum accuracy requirement of RMSE% is 20%–50%). Even for the more ecologically valuable attributes, such as diameter distribution, spatial pattern and large aspens, the estimates are acceptable for conservation purposes.Matti Maltamo Annukka Pesonen Lauri Korhonen Jari Kouki Mikko Vehmas Kalle Eerik?inen 2015Forest Ecosystems2015,2,2:0
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