What is claimed is:
1. An apparatus, comprising:
(a) an elongated core member having a longitudinal axis and a periphery extending around said core member in a line perpendicular to said longitudinal axis, said core member further defined by a first end, a second end, an exterior surface and an interior space;
(b) an outer filter member surrounding said core member; and
(c) chitosan applied to at least one of said core member and said outer filter member.
2. The apparatus of claim 1, wherein said core member is at least partially filled with a ballast material.
3. The apparatus of claim 2, wherein said ballast material comprises rocks, gravel or sand.
4. The apparatus of claim 1, wherein said outer filter member comprises a fiber roll.
5. The apparatus of claim 4, wherein said fiber roll comprises excelsior or straw.
6. The apparatus of claim 1, wherein said outer filter member comprises a porous foam material.
7. The apparatus of claim 1, wherein said core member is eccentrically positioned within said outer filter member.
8. The apparatus of claim 1, further comprising one or more openings in said core member communicating said interior space with the exterior of said core member.
9. The apparatus of claim 8, wherein said core member comprises a flexible plastic pipe or netting.
10. The apparatus of claim 1, further comprising:
(d) a plurality of ribs extending along at least a portion of said exterior surface of said elongated core member.
11. The apparatus of claim 10, further comprising:
(e) one or more openings in one or more of said ribs communicating said interior space with the exterior surface of said core member.
12. An apparatus, comprising:
(a) an elongated core member having a first end, a second end, and an interior space;
(b) an outer filter member surrounding said core member;
(c) a ballast material filling at least a portion of said interior space; and
(d) chitosan applied to at least one of said core member, said outer filter member and said ballast material.
13. The apparatus of claim 12, further comprising one or more openings in said elongated core member communicating said interior space with the exterior of said core member.
14. The apparatus of claim 12, wherein said ballast material comprises rocks, gravel or sand.
15. The apparatus of claim 12, wherein said core member comprises a flexible plastic pipe or netting.
16. A method for forming an erosion control roll comprising the steps of:
(a) creating an elongated core member having a first end, a second end, and an interior space;
(b) forming a separate blanket of filter material;
(c) applying chitosan to said blanket of filter material
(d) covering said elongated core member with said blanket of chitosan enhanced filter material, such that said blanket forms an outer filter member situated around said elongated core member.
17. The method of claim 16, wherein said step of creating an elongated core member includes filling said elongated core member with a ballast material.
18. The method of claim 16, wherein said step of applying chitosan includes spraying a liquid form of chitosan onto said blanket of filter material.
19. The method of claim 16, further comprising the step of:
(e) drying said blanket of filter material after the step of applying chitosan to said blanket.
20. The method of claim 16, further comprising the step of:
(e) placing said erosion control roll into a sealed container.
21. An erosion control roll, comprising:
(a) A filter member having a longitudinal axis and a periphery extending around said filter member in a line perpendicular to said longitudinal axis, said filter member further defined by first and second ends and an exterior surface; and
(b) chitosan applied to said filter member.
22. The erosion control roll of claim 21, further comprising (c) a porous covering material around said exterior surface of said filter member.
23. The erosion control roll of claim 22, wherein said porous covering material comprises a woven cloth or netting.
24. The erosion control roll of claim 21, wherein said filter member comprises a fiber roll.
25. The erosion control roll of claim 24, wherein said fiber roll comprises excelsior or straw.
26. The apparatus of claim 21, wherein said outer filter member comprises a porous foam material.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method comprising:
storing data associated with performance metrics of a plurality of information technology (IT) projects;
generating an investment map of a plurality of IT portfolios, using said stored data, showing at least where said IT portfolios stand on risk, investment size and soundness, with placement of each graphical representation of an IT project denoting at least the risk of the IT portfolio, a first visual attribute of the graphical representation denoting an amount of investment in the IT portfolio, and a second visual attribute of the graphical representation denoting soundness of the IT portfolio;
receiving a selection of a graphical representation of an IT project; and
replacing the investment map with a tabular presentation of the performance metrics for the IT project corresponding to the selected graphical representation.
2. The method of claim 2, wherein said first and second visual attributes of the graphical representation comprise size and color of the graphical representation.
3. A computer program product comprising:
a computer-readable storage medium having stored therein
programming instructions to access stored data associated with performance metrics of a plurality of information technology (IT) projects,
programming instructions to generate an investment map of a plurality of IT portfolios, using said stored data, showing at least where said IT portfolios stand on risk, investment size and soundness, with placement of each graphical representation of an IT project denoting at least the risk of the IT portfolio, a first visual attribute of the graphical representation denoting an amount of investment in the IT portfolio, and a second visual attribute of the graphical representation denoting soundness of the IT portfolio,
programming instructions to receive a selection of a graphical representation of an IT project, and
programming instructions to replace the investment map with a tabular presentation of the performance metrics for the IT project corresponding to the selected graphical representation.
4. The computer program product of claim 3, wherein said first and second visual attributes of the graphical representation comprise size and color of the graphical representation.
5. A system comprising:
a database to store data associated with performance metrics of a plurality of information technology (IT) projects;
a scorecard generator to generate a plurality of scorecards for a plurality of IT portfolios, using said stored data, with each scorecard showing where IT projects of an IT portfolio stand on said performance metrics, each IT portfolio having a subset of said IT projects;
an investment overview generator to generate one or more investment maps of said IT portfolios, using also said stored data, showing where said IT portfolios stand on a plurality of performance metrics;
wherein the scorecard generator and the investment overview generator are navigationally coupled to facilitate user navigation between a selected one of said one or more investment maps and a corresponding one of said scorecards.
6. A computer signal embodied in a transmission medium, comprising:
a code segment including instructions to access stored data associated with performance metrics of a plurality of information technology (IT) projects;
a code segment including instructions to generate a plurality of scorecards for a plurality of IT portfolios, using said stored data, with each scorecard showing where IT projects of an IT portfolio stand on said performance metrics, each IT portfolio having a subset of said IT projects;
a code segment including instructions to generate one or more investment maps of said IT portfolios, using also said stored data, showing where said IT portfolios stand on a plurality of performance metrics;
a code segment including instructions to facilitate user navigation between a selected one of said one or more investment maps and a corresponding one of said scorecards.