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1. Fragmentation Function
- rd11.web.cern.ch
- Next: Fragmentation Region Up: No Title Previous: Four-momenta .
- Fragmentation Function.
- The fragmentation functions measured in e+e- or interactions are characterized by a peak at zero and a fast experimental falloff towards higher values. ...
- The measured fragmentation functions show clear differences between quark and gluon jets: gluon jets have higher particle multiplicities, but their energy and energy fraction is lower: the fragmentation is softer. ...
2. Gossamer Threads Links: Urban_Forestry/Planning_and_Management/Fragmentation
- forestryindex.net
- Urban Forestry: Planning and Management: Fragmentation.
- Contribution of Roads to Forest Fragmentation http://www. ... htm Increasingly, previously extensive, continuous tracts of forest are being reduced to widely dispersed patches of remnant forest vegetation by logging and road-building, but few measures of the effects of roads on forest fragmentation are available. ...
- Forest fragmentation creating genetic bottleneck http://www. ...
- html Forest fragmentation from urban sprawl is a site-level phenomenon; however, it affects conservation of biodiversity at landscape and regional scales. ...
- The Forest Fragmentation Project, Northern Wisconsin http://www. ... This parcelization, or fragmentation, of our northern woods is another unfortunate form of sprawl. ...
- What is Forest Fragmentation and Why is it Important? http://birds. ... edu/bfl/gen_instructions/fragmentation. html Forest fragmentation occurs when large, continuous forests are divided into smaller blocks, either by roads, clearing for agriculture, urbanization, or other human development. Ornithologists suspect that fragmentation harms many woodland birds by increasing their susceptibility to predation and nest parasitism. ...
3. BFL: What is Forest Fragmentation and Why is it Important?
- birds.cornell.edu
- FOREST FRAGMENTATION.
- What is Forest Fragmentation and Why is it Important? .
- Forest fragmentation occurs when large, continuous forests are divided into smaller blocks, either by roads, clearing for agriculture, urbanization, or other human development. Ornithologists suspect that fragmentation harms many woodland birds by increasing their susceptibility to predation and nest parasitism.
- Nevertheless, forest-interior species that require mature forests are affected by both sources of fragmentation. ...
- BFL will provide us with data on the specific effects of forest fragmentation throughout the geographic ranges of many species of high-priority forest birds. ... Region-specific management plans are particularly important for species with large ranges, over which the effects of fragmentation may vary.
4. GIS Applications in Habitat Fragmentation Studies
- oregonstate.edu
- 5703 150 Clean Clean false false false MicrosoftInternetExplorer4 Habitat Fragmentation:.
- Habitat fragmentation due to land use change has long been recognized as a major threat to the preservation of biodiversity and to the viability of endangered species. ...
- Habitat edge has often been investigated as a significant consideration in areas which have undergone habitat fragmentation. ...
- Landscape fragmentation and forest composition effects. ...
- In order to examine the relationship between breeding success of Black Grouse (Tetrao tetrix) and forest fragmentation, the authors used GIS data on both grouse distribution from a previous census and GIS information on habitat connectivity. They found a negative correlation between grouse breeding success and habitat fragmentation both in areas of farmland and in areas with a decreasing proportion of older forest land. ...
- The resulting fragmentation of habitat is impacting many threatened species, including the Louisiana black bear (Ursus americanus luteolus) and several Neotropical migratory birds. ...
- Habitat fragmentation is an ever-increasing issue in the fields of population ecology and conservation biology, yet the authors here argue that current research emphasizes the effects of habitat patch area and isolation only, and does not incorporate enough information on habitat quality and landscape structure. ...
- They found that with the maximum fragmentation scenario which was modeled, 63% of potential panther habitat, 66% of potential Sandhill Crane habitat, and 67% of potential wading bird nesting habitat could be lost. ...
- Contribution of roads to forest fragmentation in the Rocky Mountains. ...
- Geographic Information Systems were used to quantify and compare the potential effects of fragmentation by road construction and fragmentation by clearcuts. ...
- Assessment of forest fragmentation in southern New England using remote sensing and Geographic Information Systems technology. ...
- Patterns and rates of forest fragmentation were evaluated using remote sensing data in an area that has had rapid rates of population increases in recent decades. The author found that with only slight population increases, there were dramatic increases in forest fragmentation. This study provides a tool for assessing forest fragmentation across large areas, providing an accurate assessment of the magnitude of this disturbance. ...
5. The Effects of Age and Fragmentation on File System Performance
- www.eecs.harvard.edu
- THE EFFECTS OF AGE AND FRAGMENTATION ON FILE SYSTEM PERFORMANCE.
- Unfortunately, most real-world file systems are not empty, and are subject to fragmentation, which decreases the opportunities for file clustering. ...
- The goals have this work are to understand the effects of fragmentation on UNIX file system performance, and to analyze the causes of this fragmentation in the hopes of discovering better algorithms for disk allocation and file layout. ...
- In order to study the impact of fragmentation on UNIX file system performance, I have collected a series of snapshots from the file servers used by the Harvard University Division of Applied Sciences. ...
- Small files suffer from more fragmentation than large files do. ...
- A major cause of fragmentation is small files is the policy that FFS uses when allocating fragments. ...
- The file systems that serve usenet news articles suffer from extreme fragmentation. ...
- After each run of the benchmark program, I took a snapshot of the test file system to determine the fragmentation of the files created by the benchmark. ...
- File system performance is closely correlated to the fragmentation of the files that are being read and written on that file system. ...
- The amount of fragmentation in existing files on a file system is not a good predictor for the fragmentation of newly created files. ...
- File fragmentation caused performance degradation of up to 30% (on one of the news file systems). ...
6. Habitat Fragmentation Effects on Birds
- www.npwrc.usgs.gov
- Habitat Fragmentation Effects on Birds in Grasslands.
- Abstract: Habitat fragmentation exacerbates the problem of habitat loss for grassland and wetland birds. ... Knowledge of the effects of fragmentation on bird populations is critically important for decisions about reserve design, grassland and wetland management, and implementation of cropland set-aside programs that benefit wildlife. In my review of research that has been conducted on habitat fragmentation, I found at least five common problems in the methodology used. ...
- Key Words: birds, fragmentation, grasslands, habitat, wetlands, wildlife This resource is based on the following source (Northern Prairie Publication 1160): Johnson, Douglas H. ... Habitat fragmentation effects on birds in grasslands and wetlands: a critique of our knowledge. ...
- Habitat fragmentation effects on birds in grasslands and wetlands: a critique of our knowledge. ...
- Problems of Fragmentation Studies .
- zip ( 45K bytes) -- Habitat Fragmentation Effects on Birds in Grasslands and Wetlands: A Critique of Our Knowledge Installation: Extract all files and open habfrag. ...
7. Contribution of Roads to Forest Fragmentation in the West
- www.cpluhna.nau.edu
- Contribution of Roads to Forest Fragmentation.
- Contribution of Roads to Forest Fragmentation.
- "Contribution of Roads to Forest Fragmentation in the Rocky Mountains. ...
- Increasingly, previously extensive, continuous tracts of forest are being reduced to widely dispersed patches of remnant forest vegetation by logging and road-building, but few measures of the effects of roads on forest fragmentation are available. Fragmentation affects animal populations in a variety of ways, including decreased species diversity and lower densities of some animal species in the resulting smaller patches. ...
- Roads precipitate fragmentation by dissecting previously large patches into smaller ones, and in so doing they create edge habitat in patches along both sides of the road, potentially at the expense of interior habitat. ...
- The objectives of this study were to determine the importance of roads in delineating and quantifying landscape structure, including the proportion of the landscape occupied by edge habitat, and compare the effects of roads and clearcut logging on forest fragmentation. ...
- The number of patches (areas of intact forest) in the study area increased 179 and 158% respectively (see Figure 1), indicating extensive fragmentation of previously contiguous areas. ... Measurements comparing roads to clearcut logging indicate that the construction of roads causes even greater fragmentation than clearcutting alone (see Figure 1). ...
- Timber harvests should be planned to minimize impact on the landscape and exacerbation of the current landscape fragmentation problems on many forestlands.
8. Re: jffs2 fragmentation
- mhonarc.axis.se
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- Re: jffs2 fragmentation .
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9. 1999 Progress Report - THE EFFECT OF HABITAT FRAGMENTATION ON MAMMALIAN CARNIVORES
- es.epa.gov
- 1999 Progress Report - THE EFFECT OF HABITAT FRAGMENTATION ON MAMMALIAN CARNIVORES.
- Title: THE EFFECT OF HABITAT FRAGMENTATION ON MAMMALIAN CARNIVORES.
- ) To evaluate the effects of urban development and habitat fragmentation on the distribution, abundance, and conservation of mammalian carnivore species. ...
- Unfortunately, the effects of this widespread habitat fragmentation on populations of mammalian carnivores remain unknown. ...
- With distribution and abundance data for each species, I could evaluate their relative sensitivities to habitat fragmentation measured at both a local and landscape scale. ...
- Mammalian carnivores as indicators of habitat fragmentation in southern California. ...
10. Fragmentation: Chapter 2
- www.execsoft.com
- WHAT IS FRAGMENTATION? .
- File Fragmentation and Free Space Fragmentation .
- Fragmentation means two things: .
- Condition 1 is referred to as file fragmentation, while Condition 2 is referred to as disk fragmentation or, more precisely, free space fragmentation. File fragmentation causes performance problems when reading files, while free space fragmentation causes performance problems when creating and extending files. ...
- Internal Fragmentation .
- The term fragmentation is sometimes applied to the contents of a file. This type of fragmentation will be explained here only to differentiate it from our real subjects, file and free space fragmentation. ...
- There are three basic kinds of files, each affected by file content fragmentation differently: .
- Accordingly, sequential files are not subject to internal fragmentation. ...
- Fragmentation of the contents of such a file causes virtually no performance problems, as the file is designed to be accessed in random order and any new record is guaranteed to fit precisely within any free space in the file. ...
- Indexed: Indexed files, however, do suffer from internal fragmentation. ... This type of fragmentation affects performance of only those applications accessing the affected file (unless such activity is so intense that it degrades the performance of the entire system). ...
- This internal file fragmentation is not the type of fragmentation with which this book is concerned. ...
- Pagefile Fragmentation .
- Another type of fragmentation which occurs on OpenVMS systems but is beyond the scope of this book is pagefile fragmentation. ...
11. Spontaneous DNA Fragmentation in Swim-Up Selected Human Spermatozoa During Long Term Incubation -- Muratori et al. 24 (2): 253 -- Journal of Andrology
- www.andrologyjournal.org
- Spontaneous DNA Fragmentation in Swim-Up Selected Human Spermatozoa During Long Term Incubation .
- The origin and the meaning of DNA fragmentation in ejaculated human spermatozoa are not yet clear, although some hypotheses have been proposed. In the present study, we used investigated sperm DNA fragmentation by terminal deoxynucleotidyl transferase-mediated fluorescein-dUTP nick end labeling (TUNEL)-coupled flow cytometry to investigate DNA fragmentation in spermatozoa that were selected by the swim-up procedure and incubated long-term. ... We found that in vitro sperm DNA fragmentation 1) occurs after ejaculation under experimental conditions without the involvement of any external factor, 2) is not affected by treatment with the nuclease inhibitor aurintricarboxylic acid, 3) is increased by treatment with the glutathione peroxidase inhibitor mercaptosuccinate, 4) correlates with basal values (ie, just after swim-up selection) of DNA fragmentation in teratozoospermic but not in normospermic semen samples, 5) develops in a sharply associated manner with the in vitro occurrence of sperm necrosis, and 6) is predicted by the basal value of annexin V binding in viable spermatozoa. These findings suggest an involvement of endogenously produced reactive oxygen species as the possible cause of in vitro sperm DNA fragmentation. ...
12. Reactive Oxygen Species and Cryopreservation Promote DNA Fragmentation in Equine Spermatozoa -- Baumber et al. 24 (4): 621 -- Journal of Andrology
- www.andrologyjournal.org
- Reactive Oxygen Species and Cryopreservation Promote DNA Fragmentation in Equine Spermatozoa .
- The objective of this study was to examine the effect of reactive oxygen species (ROS) and cryopreservation on DNA fragmentation of equine spermatozoa. ... Following incubation, DNA fragmentation was determined by the single cell gel electrophoresis (comet) assay. In experiment 3, equine spermatozoa were cryopreserved, and DNA fragmentation was determined in fresh, processed, and postthaw sperm samples. In experiment 1, incubation of equine spermatozoa in the presence of ROS, generated by the X-XO system, increased DNA fragmentation (P <. ... In Experiment 2, the increase in DNA fragmentation associated with X-XO treatment was counteracted by the addition of catalase and GSH but not by SOD, suggesting that hydrogen peroxide and not superoxide appears to be the ROS responsible for such damage. ... 01) in DNA fragmentation when compared with fresh or processed samples. This study indicates that ROS and cryopreservation promote DNA fragmentation in equine spermatozoa; the involvement of ROS in cryopreservation-induced DNA damage remains to be determined. ...
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