Abstract: Dispensing towels includes, using a motor assembly configured to cause a leading edge of the toweling to be extended from a housing of the dispenser and to cause the toweling to be subsequently retracted back into the housing, (a) the step of extending the toweling exterior of the housing for grasping by a user; and (b) subsequent thereto, the steps of (1) retracting the toweling into the housing using the motor assembly; (2) sensing a leading edge of the toweling, using a sensor, while retracting the toweling; and (3) ceasing retracting of the toweling into the housing using the motor assembly as a function of sensing the leading edge of the toweling using the sensor. The toweling is advanced by the motor assembly such that a line of perforations in the toweling, along which the user tears the toweling, is located downstream of the sensor.

Abstract: A portable towel dispenser includes a housing configured to stand upright and an interior space for receiving a toweling assembly including a roll of towels on an arbor. The interior space is configured to receive in a vertical orientation the arbor for vertical support thereof during unwinding of the roll of towels. A loading door is configured to rotate relative to the housing about a generally vertical axis between a closed position, in which the loading door and housing together enclose the toweling assembly within the dispenser, and an open position, in which the dispenser is configured to receive the toweling assembly therein without obstruction by the loading door. The dispenser is battery operated, includes a handle, and is readily hand portable. A button on a bottom of the housing is depressed to enable dispensing when the housing is stood upright.

Abstract: Dispensing towels includes, using a motor assembly configured to cause a leading edge of the toweling to be extended from a housing of the dispenser and to cause the toweling to be subsequently retracted back into the housing, (a) the step of extending the toweling exterior of the housing for grasping by a user; and (b) subsequent thereto, the steps of (1) retracting the toweling into the housing using the motor assembly; (2) sensing a leading edge of the toweling, using a sensor, while retracting the toweling; and (3) ceasing retracting of the toweling into the housing using the motor assembly as a function of sensing the leading edge of the toweling using the sensor. The toweling is advanced by the motor assembly such that a line of perforations in the toweling, along which the user tears the toweling, is located downstream of the sensor.

Abstract: Computer-implemented methods and systems for textual analysis by generating models of the progression of writing and writing abilities are provided. A set of examinee-generated responses for one or more test items may be identified based upon at least one index. One or more data-based profiles may be assembled from the identified set of examinee-generated responses. Writing characteristics may be quantified from the assembled one or more data-based profiles based on the at least one index.

Abstract: A portable towel dispenser includes a housing configured to stand upright and an interior space for receiving a toweling assembly including a roll of towels on an arbor. The interior space is configured to receive in a vertical orientation the arbor for vertical support thereof during unwinding of the roll of towels. A loading door is configured to rotate relative to the housing about a generally vertical axis between a closed position, in which the loading door and housing together enclose the toweling assembly within the dispenser, and an open position, in which the dispenser is configured to receive the toweling assembly therein without obstruction by the loading door. The dispenser is battery operated, includes a handle, and is readily hand portable. A button on a bottom of the housing is depressed to enable dispensing when the housing is stood upright.

Abstract: An apparatus to perform tests on fluid flow and configured to operate at field conditions includes one or more vessels and one or more sets of fluid injecting devices corresponding to respective ones of the one or more vessels. Each set of fluid injecting devices includes one or more fluid injecting devices each configured to inject a respective fluid through its respective vessel. The apparatus further includes one or more measurement devices operatively coupled to respective ones of the one or more vessels and configured to measure data associated with fluid flow of the one or more fluids injected into its respective vessel. The measured data comprises one or more of pressure gradient data and flow rate data. The apparatus is in communication with at least one processor configured to calculate a model based on the measured data. In calculating the model, the at least one processor is configured to infer one or more parameters for the model from the measured data.

Abstract: A towel dispenser includes a housing mounted to a wall and defining an interior space for receiving toweling comprising a roll of towels, the interior space comprising a curved surface configured to receive the roll of towels in floating engagement therewith such that the roll of towels rolls and slides on the curved surface during unwinding of the roll of towels. The towel dispenser further includes a loading door configured to rotate relative to the main body, when the main body is mounted to a wall, between a closed position in which the loading door extends over a top of and closes off the interior space of the main body in which toweling is received, and an open position, in which the housing is configured to receive toweling therein without obstruction by the loading door, with the loading door extending upwardly above and over a top of the housing.

Abstract: A towel dispenser includes a housing for receiving toweling. The housing includes a main body; a loading door that is configured to rotate relative to the main body between a closed position and an open position; and a guide system that includes a first roller attached to the main body and a second roller attached to the loading door. The towel dispenser may include a motor for driving dispensing of the toweling from the housing and an associated sensor. The towel dispenser can be mounted to an underside of a cabinet. In an aspect, the front wall of the main body and a lip of the loading door collectively define a gap to which the guiding system guides the toweling and through which towels are dispensed when the loading door is in the closed position.

Abstract: A microfluidic device, including a matrix array of controllable shape-changing micropillars where a shape of the shape-changing micropillars is changed by a fluid.

Abstract: A microfluidic device, including a substrate including a microchannel, an activation setup disposed in the microchannel, and a matrix array of controllable shape-changing micropillars connected to the activation setup. A shape of the controllable shape-changing micropillars changes based on an activation of the activation setup.

Abstract: A method is provided including receiving data corresponding to a three-dimensional physical representation of a porous rock sample; calculating a low-dimensional representation of a pore network in the porous rock sample based on the three-dimensional physical representation; extracting one or more geometrical parameter from the low-dimension representation; generating a capillary network model of the porous rock sample based at least on the at least one geometrical parameter for simulating fluid flow inside the porous rock sample; and performing at least one simulation of a flow of the fluid through the capillary network model of the porous rock sample with a fluid additive to provide a predicted enhanced fluid recovery efficiency.

Abstract: A method is provided including calculating a first property vector indicative of physical properties derived from a digital image of a first rock sample; determining a set of one or more similar rock samples by calculating a value indicating a similarity between the first rock sample and second rock samples based on the first property vector and second property vectors associated with the second rock samples; selecting a list of fluid additives based on existing enhanced fluid recovery efficiency values associated with the similar rock samples; performing, for each of the fluid additives, a simulation of a flow of fluid through a digital model of the first rock to determine a simulated enhanced fluid recovery efficiency value for the respective fluid additives; and outputting an optimal fluid additive for the first rock sample based at least in part on the calculated similarity values and simulated enhanced fluid recovery efficiency values.

Abstract: A system for controlling a temperature a within an interior volume of a cargo trailer adapted to transport perishable goods is described herein. The system includes a fluid distribution assembly and a monitoring system. The fluid distribution assembly is configured to selectively channel a flow of cryogenic cooling fluid into the cargo trailer interior volume to facilitate adjusting a temperature within the interior volume. The monitoring system includes at least one sensor for sensing an environmental parameter of the cargo trailer, and a controller coupled to the sensor and to the fluid distribution assembly. The controller is configured to receive a monitoring signal indicative of the sensed environmental parameter, determine an environmental condition of the cargo trailer as a function of the environmental parameter, and provide a notification signal if the determined environmental condition is different than a predefined environmental condition.

Abstract: A system for controlling a temperature a within an interior volume of a cargo trailer adapted to transport perishable goods is described herein. The system includes a fluid distribution assembly and a monitoring system operatively coupled to the fluid distribution assembly for selectively channeling a flow of cryogenic cooling fluid into the cargo trailer interior volume to facilitate adjusting a temperature within the interior volume. The monitoring system includes at least one sensor for sensing an environmental parameter of the cargo trailer, and a controller coupled to the sensor and to the fluid distribution assembly. The controller is configured to receive a monitoring signal indicative of the sensed environmental parameter, determine an environmental condition of the cargo trailer as a function of the environmental parameter, and provide a notification signal if the determined environmental condition is different than a predefined environmental condition.

Abstract: A microfluidic device, including a substrate including a microchannel, an activation setup disposed in the microchannel, and a matrix array of controllable shape-changing micropillars connected to the activation setup. A shape of the controllable shape-changing micropillars changes based on an activation of the activation setup.

Abstract: A portable towel dispenser includes a housing configured to stand upright and an interior space for receiving a toweling assembly including a roll of towels on an arbor. The interior space is configured to receive in a vertical orientation the arbor for vertical support thereof during unwinding of the roll of towels. A loading door is configured to rotate relative to the housing about a generally vertical axis between a closed position, in which the loading door and housing together enclose the toweling assembly within the dispenser, and an open position, in which the dispenser is configured to receive the toweling assembly therein without obstruction by the loading door. The dispenser is battery operated, includes a handle, and is readily hand portable. A button on a bottom of the housing is depressed to enable dispensing when the housing is stood upright.

Abstract: Disclosed herein is a golf putting device is described which comprises a cuboid tube body filled with cement and either capped at both ends or painted at both ends. The golf putting practice device enables the golfer to practice stance alignment, stroke mechanics, directional guidance and reading surface contours. The golf putting practice device is portable, easily moveable and position able for use with every stroke. Proper use of the device allows the golfer to learn how to assess the results of a stroke and, through trial and error, teaches the golfer how to select the best stroke path.

Abstract: A system for manipulating electric fields within a microscopic fluid channel includes a fluid channel with an inlet and an outlet to support fluid flow, at least one controllable electric field producer that applies a non-uniform and adjustable electric field to one or more regions of the fluid channel, one or more sensors that measure one or more parameters of a fluid flowing through the fluid channel, and a controller with hardware and software components that receives signals from the one or more sensors representative of values of the one or more parameters and, based on the parameter values, drives one or more actuators to adjust the electric field produced by the plurality of electric field producers.

Abstract: A towel dispenser includes a housing mounted to a wall and defining an interior space for receiving toweling comprising a roll of towels, the interior space comprising a curved surface configured to receive the roll of towels in floating engagement therewith such that the roll of towels rolls and slides on the curved surface during unwinding of the roll of towels. The towel dispenser further includes a loading door configured to rotate relative to the main body, when the main body is mounted to a wall, between a closed position in which the loading door extends over a top of and closes off the interior space of the main body in which toweling is received, and an open position, in which the housing is configured to receive toweling therein without obstruction by the loading door, with the loading door extending upwardly above and over a top of the housing.

Abstract: A battery-free wireless network is provided with one or more series or parallel capacitive networks. One or more solar panels are used to charge the capacitive networks and one or more charging circuits are used to control the charging of the capacitive networks. One or more DC-DC converters maybe used to provide a voltage to a wireless router, switch or other network device, the timer/clock circuitry, and a user interface. In those instances when it is desired that the timer/clock circuitry remain powered at all times, the timer/clock circuitry is preferentially preserved at the expense of the network device such that if, for any reason, the capacitive network is drained after running the network device, there will still be sufficient power stored in the capacitive network to maintain the timer/clock circuitry.