1460730834-7ff4489a-e114-47ac-905a-6707ac9a50c6

1. A method comprising:
repeatedly transmitting messages from a first wireless node at a transmit power;
receiving feedback from a second wireless node, the feedback based on a quality of reception of at least some of the messages at the second wireless node; and
adjusting the transmit power of the first wireless node based on the feedback to maintain the quality of reception proximate to a setpoint.
2. The method of claim 1, wherein:
receiving the feedback comprises receiving feedback from multiple second wireless nodes; and
adjusting the transmit power comprises adjusting the transmit power based on the feedback from at least one of the second wireless nodes.
3. The method of claim 1, wherein:
the messages are transmitted on multiple wireless channels;
receiving the feedback comprises receiving feedback for each wireless channel based on the quality of reception for that wireless channel; and
adjusting the transmit power comprises adjusting the transmit power for each wireless channel based on the feedback for that wireless channel.
4. The method of claim 1, wherein:
the feedback comprises quantized values; and
adjusting the transmit power comprises:
identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message;
integrating the numerical values for multiple messages; and
identifying a transmit power value based on the numerical value associated with the most recently transmitted message and the integrated numerical values.
5. The method of claim 1, wherein:
the first wireless node comprises a digital-to-analog converter and a power amplifier, the transmit power based on an amount of amplification provided by the power amplifier, the amount of amplification controlled by the digital-to-analog converter;
the feedback comprises quantized values; and
adjusting the transmit power comprises:
identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message;
integrating the numerical values for multiple messages;
identifying a digital value based on the numerical value associated with the most recently transmitted message and the integrated numerical values; and
providing the digital value to the digital-to-analog converter.
6. The method of claim 5, wherein identifying the digital value comprises:
determining the digital value using a non-linear transformation function, the non-linear transformation function transforming the quantized values into non-linear numerical values allowing for more rapid increases in the transmit power and less rapid decreases in the transmit power.
7. The method of claim 5, wherein each quantized value has one of at least four states, the at least four states including states that indicate:
the quality of reception is better than the setpoint;
the quality of reception is acceptable compared to the setpoint;
the quality of reception is worse than the setpoint; and
the quality of reception is much worse than the setpoint.
8. The method of claim 1, wherein adjusting the transmit power of the first wireless node minimizes the transmit power while maintaining the quality of reception proximate to the setpoint.
9. The method of claim 1, further comprising:
re-transmitting at least one of the messages not successfully received by the second wireless node, wherein the re-transmission occurs using an increased transmit power that is not based on the feedback.
10. The method of claim 1, wherein the quality of reception comprises at least one of: a bit error rate, a packet error rate, and a receive signal strength.
11. The method of claim 1, wherein the quality of reception is determined for a sliding window associated with a subset of the transmitted messages.
12. An apparatus comprising:
a wireless radio configured to repeatedly transmit messages at a transmit power, the wireless radio also configured to receive feedback from a receiving node, the feedback based on a quality of reception of at least some of the messages at the receiving node; and
a controller configured to adjust the transmit power of the wireless radio based on the feedback to maintain the quality of reception proximate to a setpoint.
13. The apparatus of claim 12, wherein the controller comprises a proportional-integral controller or a proportional-integral-derivative controller.
14. The apparatus of claim 12, wherein:
the feedback comprises feedback from multiple receiving nodes; and
the controller is further configured to select the feedback from one of the receiving nodes, the transmit power adjusted based on the selected feedback.
15. The apparatus of claim 12, wherein:
the feedback comprises quantized values; and
the controller is configured to adjust the transmit power by:
identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message;
integrating the numerical values for multiple messages; and
identifying a transmit power value based on the numerical value associated with the most recently transmitted message and the integrated numerical values.
16. The apparatus of claim 12, wherein:
the wireless radio comprises a digital-to-analog converter and a power amplifier, the transmit power based on an amount of amplification provided by the power amplifier, the amount of amplification controlled by the digital-to-analog converter;
the feedback comprises quantized values; and
the controller is configured to adjust the transmit power by:
identifying numerical values associated with at least some of the quantized values, including a numerical value associated with a most recently transmitted message;
integrating the numerical values for multiple messages;
identifying a digital value based on the numerical value associated with the most recently transmitted message and the integrated numerical values; and
providing the digital value to the digital-to-analog converter.
17. The apparatus of claim 16, wherein the controller is configured to identify the digital value by:
determining the digital value using a non-linear transformation function, the non-linear transformation function transforming the quantized values into non-linear numerical values allowing for more rapid increases in the transmit power and less rapid decreases in the transmit power.
18. The apparatus of claim 16, wherein each quantized value has one of at least four states, the at least four states including states that indicate:
the quality of reception is better than the setpoint;
the quality of reception is acceptable compared to the setpoint;
the quality of reception is worse than the setpoint; and
the quality of reception is much worse than the setpoint.
19. An apparatus comprising:
a wireless radio configured to wirelessly receive first messages from a transmitting node; and
a feedback controller configured to:
determine a quality of reception of at least some of the received first messages; and
generate a second message comprising at least one of: information identifying the quality of reception and information associated with the quality of reception; and

wherein the wireless radio is further configured to transmit the second message to the transmitting node.
20. The apparatus of claim 19, wherein the feedback controller is configured to compare the quality of reception to a setpoint and to generate a code based on the comparison, wherein the code comprises the information associated with the quality of reception.

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 tissue treatment device, comprising an elastic sheet with a planar skin interfacing surface, a first edge means for reducing peak stresses and a second edge means for reducing peak stresses, wherein the second edge means is located farthest and opposite from the first edge means, a first tensile stressed configuration and a second tensile stressed configuration wherein the skin interfacing surface is configured to adhere to skin in the first tensile stressed configuration and further configured to partially relax to the second tensile stressed configuration and compress the adhered skin, wherein the first edge means comprises a first undulating edge comprising a plurality of consecutive extensions, a plurality of consecutive open spaces, and a modulation zone, wherein each extension has a peak and an amplitude, each open space has a trough, and wherein the modulation zone has a total area defined by a proximal boundary along a line or curve of best fit along the troughs, an outer boundary along a line or curve of best fit along the peaks, a first lateral boundary located at a first peak or a first trough immediately adjacent to a peak, and a second lateral boundary located at a second peak or a second trough immediately adjacent to a peak that is different from the first peak or first trough, wherein the plurality of consecutive open spaces have a total open space area, and wherein the total open space area is between about 25% and 80% of the total area of the modulation zone.
2. The tissue treatment device of claim 1, wherein the peaks comprise an average amplitude and a peak-to-peak distance that is at least 2 mm and is less than twice the average amplitude.
3. The tissue treatment device of claim 1, wherein the peaks comprise an average amplitude and the tissue treatment device comprises a width from the first means to the second means, wherein the average amplitude is between about 10% and 40% of the width.
4. The tissue treatment device of claim 3, wherein the average amplitude is between about 12% and 35% of the width.
5. The tissue treatment device of claim 1, wherein the first lateral boundary and the second lateral boundary are both peaks or both troughs.
6. The tissue treatment device of claim 5, wherein the first peak and the second peak are two peaks that are spaced farthest apart along the first edge means.
7. The tissue treatment device of claim 5, wherein the first trough and the second trough are two troughs that are spaced farthest apart along the first edge means.
8. The tissue treatment device of claim 1, wherein the plurality of consecutive extensions comprises curved distal ends with radii of curvature that are at least 1 mm.
9. The tissue treatment device of claim 5, wherein the plurality of consecutive open spaces comprises curved trough bases with radii of curvature that are at least 1 mm.
10. The tissue treatment device of claim 1, wherein the second edge means comprises a second undulating edge with at least two consecutive peaks, the at least two consecutive peaks comprising a second average amplitude and a second peak-to-peak distance that is at least 2 mm and is less than twice the second average amplitude.
11. A tissue treatment device, comprising:
an elastic sheet, comprising:
a total surface area and a net edge length;
a planar skin interfacing surface;
a first undulating edge; and
a second undulating edge farthest and opposite from the first edge;
wherein the elastic sheet further comprises a first tensile stressed configuration and a second tensile stressed configuration;
wherein the skin interfacing surface is configured to adhere to skin in the first tensile stressed configuration and configured to partially relax to the second tensile stressed configuration to compress the adhered skin;
wherein each of the undulating edges comprises at least two consecutive peaks with an average amplitude, and a peak-to-peak distance that is at least 2 mm and is equal to or less than twice the average amplitude, and the undulating edges are configured to reduce traction forces imparted by the elastic sheet, at or near one or more locations along the first undulating edge and the second undulating edge relative to an elastic sheet with the same total surface area but a smaller edge length.
12. A tissue treatment device, comprising:
an elastic sheet, comprising:
a planar skin interfacing surface;
a first undulating edge; and
a second undulating edge farthest and opposite from the first edge;
wherein the elastic sheet further comprises a first tensile stressed configuration and a second tensile stressed configuration;
wherein the skin interfacing surface is configured to adhere to skin in the first tensile stressed configuration and configured to partially relax to the second tensile stressed configuration to compress the adhered skin;
wherein the undulating edges are configured to reduce traction forces imparted by the elastic sheet at or near one or more locations along the first undulating edge and the second undulating edge; and
wherein the first undulating edge and second undulating edge define an elastic sheet width and wherein each undulating edge comprises at least two consecutive extensions with an average amplitude, wherein the average amplitude is between about 10% and 40% of the elastic sheet width.
13. The device of claim 12, wherein the average amplitude is between about 12% and 35% of the elastic sheet width.
14. The device of claim 12, wherein each undulating edge further comprises at least one of curved edge segments or straight edge segments, and wherein the first edge and the second edge each lack sharp angles and sharp vertices.
15. A tissue treatment device, comprising:
an elastic sheet, comprising:
a first undulating edge comprising a plurality of consecutive extensions, each having a peak and an amplitude and a plurality of consecutive open spaces each having a trough defining a modulation zone, wherein the modulation zone has a total area defined by a proximal boundary along a line or curve of best fit along the troughs, an outer boundary along a line or curve of best fit along the peaks, a first lateral boundary located at a first trough immediately adjacent to a first peak, and a second lateral boundary located at a second trough immediately adjacent to a second peak that is different from the first peak, wherein the first and second troughs are two troughs on the first undulating edge that are the farthest apart, wherein the plurality of consecutive open spaces have a total open space area between about 25% and 80% of the total area of the modulation zone;
a planar skin interfacing surface;

wherein the elastic sheet further comprises a first tensile stressed configuration and a second tensile stressed configuration;
wherein the skin interfacing surface is configured to adhere to skin in the first tensile stressed configuration and configured to partially relax to the second tensile stressed configuration to compress the adhered skin;
wherein the first undulating edge is configured to reduce traction forces imparted by the elastic sheet, at or near one or more locations along the first undulating edge relative to an elastic sheet with the same total surface area but a smaller edge length.
16. The tissue treatment device of claim 15, wherein the total open space area is between about 30% and 70% of the total area of the modulation zone.
17. The tissue treatment device of claim 15, wherein the first undulating edge comprises at least two consecutive extensions with a minimum separation of at least 2 mm.
18. The tissue treatment device of claim 17, wherein the at least two consecutive extensions comprise an average amplitude and an average peak-to-peak distance that is equal to or less than twice the average amplitude.
19. The tissue treatment device of claim 14, wherein the elastic sheet comprises a second undulating edge configured to reduce traction forces, wherein the second undulating edge is located farthest and opposite from the first undulating edge.
20. The tissue treatment device of claim 15, wherein the plurality of consecutive extensions comprises curved distal ends with radii of curvature that are at least 1 mm, and wherein the plurality of consecutive open spaces comprises curved trough bases with radii of curvature that are at least 1 mm.

1460730825-01e44e8f-0e27-43f2-907c-d734012b4dc7

1. A method of producing a substitute natural gas (SNG), the method comprising:
generating carbon monoxide and hydrogen using coal and a metal fuel; and
generating methane from the generated carbon monoxide and hydrogen.
2. The method of claim 1, wherein the generating of the carbon monoxide and the hydrogen comprises:
generating the carbon monoxide and primary hydrogen by gasifying the coal in a first gasification unit;
generating secondary hydrogen by reacting the metal fuel in a second gasification unit; and
supplying the secondary hydrogen generated in the second gasification unit to the first gasification unit.
3. The method of claim 2, further comprising supplying heat generated from the generating of the secondary hydrogen in the second gasification unit to the first gasification unit.
4. The method of claim 2, further comprising:
generating a metal oxide by reacting the metal fuel in the second gasification unit; and
reducing and reusing the metal oxide as the metal fuel.
5. The method of claim 2, wherein the metal fuel comprises aluminum powder or magnesium powder.
6. The method of claim 4 further comprising removing impurities from the generated carbon monoxide and hydrogen in a gas cleaning unit.
7. The method of claim 1, wherein the generating of the carbon monoxide and the hydrogen comprises generating carbon monoxide and hydrogen by gasifying both the coal and the metal fuel in the first gasification unit.
8. The method of claim 7 further comprising adding an alkaline material along with the metal fuel to the first gasification unit.
9. The method of claim 8, wherein the metal fuel comprises aluminum powder or magnesium powder, and the alkaline material is selected from the group consisting of sodium hydroxide, potassium hydroxide, and gallium.
10. The method of claim 7, wherein the gasifying both the carbon monoxide and the hydrogen comprises:
generating the carbon monoxide and primary hydrogen by reacting the coal with water and oxygen; and
generating secondary hydrogen by reacting the metal fuel with water and a catalyst.
11. The method of claim 10, further comprising generating heat from the generating the secondary hydrogen by reacting the metal fuel with the water and the catalyst.
12. The method of claim 7 further comprising removing impurities from the generated carbon monoxide and hydrogen in a gas cleaning unit.
13. A substitute natural gas producing device comprising:
a first gasification unit which generates carbon monoxide and primary hydrogen using coal and a metal fuel;
a second gasification unit which generates secondary hydrogen using a metal fuel,
wherein the second gasification unit supplies the generated secondary hydrogen to the first gasification unit;
a gas cleaning unit which removes impurities from the generated carbon monoxide and hydrogen; and
a metanation unit which generates the substitute natural gas from the generated carbon monoxide and primary and secondary hydrogen.
14. The substitute natural gas producing device of claim 13, wherein the second gasification unit supplies heat generated from the generating of the secondary hydrogen in the second gasification unit to the first gasification unit.
15. The substitute natural gas producing device of claim 14, wherein
the first gasification unit generates the carbon monoxide and primary hydrogen by reacting the coal with water and oxygen; and
the second gasification generates secondary hydrogen by reacting the metal fuel with water and a catalyst.
16. A substitute natural gas producing device comprising:
a gasification unit which generates carbon monoxide and hydrogen using coal and a metal fuel;
a gas cleaning unit which removes impurities from the generated carbon monoxide and hydrogen; and
a metanation unit which generates the substitute natural gas from the generated carbon monoxide and primary and secondary hydrogen,
wherein the gasification unit is configured to intake alkaline material.
17. The method of claim 16, wherein the metal fuel comprises aluminum powder or magnesium powder, and the alkaline material is selected from the group consisting of sodium hydroxide, potassium hydroxide, and gallium.

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 golf club head assembly, comprising, in combination:
a first discrete, interchangeable weight portion;
a second discrete, interchangeable weight portion having a different weight profile as compared to the first interchangeable weight portion;
a face with milled grooves therein;
a hosel;
a body adapted to receive and retain accessibly and detachably one of: the first interchangeable weight portion, and the second interchangeable weight portion; and
the first interchangeable weight portion when received and retained accessibly and detachably in the body presenting a first center of gravity relative to the body to which it is received and retained accessibly and detachably;
the second interchangeable weight portion when received and retained accessibly and detachably in the body presenting a second center of gravity relative to the body to which it is received and retained accessibly and detachably, the second center of gravity different from the first center of gravity;
where the shaft alignment configuration of the hosel and a weight configuration provided by the received and retained interchangeable weight portion alters a balance of the golf club head.
2. The golf club head assembly as described in claim 1 wherein the hosel is a modular hosel either integrated with or connected to the head and having one of different shaft alignment configurations coupled to the body.