Abstract: A computing device includes an optical network transceiver and a basic input/output system (BIOS). The optical network transceiver is to connect to an optical network and to generate an event indicating that an optical signal strength has attenuated below a threshold. The BIOS is to determine generation of the event by the optical network transceiver, and responsively detect occurrence of a potential optical network intrusion attack. In response to detecting occurrence of the potential optical network intrusion attack, the BIOS is to perform an action to protect the computing device from the potential optical network intrusion attack.

Abstract: An example computing device can include a processing resource and a memory resource storing instructions thereon, the instructions executable by the processing resource to: log commands directed to the computing device, identify missed utterances from the logged commands, extract features from the missed utterances, wherein the features include an entity and a key phrase associated with the missed utterances, generate a list of the missed utterances based on a priority associated with the features associated with each of the missed utterances, and provide a portion of the missed utterances to a service for resolution, wherein the portion of the missed utterances are above a threshold priority within the list of the missed utterances.

Abstract: An example operation method of an image forming apparatus includes forming a test image with respect to a pattern used for diagnosing an image-quality state of a printout output by the image forming apparatus, obtaining a test signal corresponding to the test image via a sensor of the image forming apparatus, obtaining image-quality state information indicating an image-quality state of the test image based on the test signal corresponding, identifying a type of a screen corresponding to halftone information indicating a resolution of the printout based on the image-quality state information, and performing a first image forming operation according to the type of the screen.

Abstract: Upon fulfillment of a replacement cartridge of print material, whether projected usage of a printing device will likely deplete a current cartridge of print material prior to anticipated arrival of the replacement cartridge is determined. Responsive to determination that the projected usage will likely deplete the current cartridge prior to the anticipated arrival of the replacement cartridge, the printing device is to enter a reduced print material usage mode during subsequent actual usage of the printing device.

Abstract: An example of a computer-readable medium to store machine-readable instructions. The instructions may cause a processor to update a machine learning model based on first confidential data set. The machine learning model may have been previously trained based on a training data set distinct from the confidential data set. The instructions may cause the processor to apply the machine learning model after the update to a second confidential data set.

Abstract: In one example, a memory having instructions thereon that when executed cause a 3D printing system to determine a cure time for a functional agent applied to print a part as a function of build platform position and then cure the functional agent for the determined cure time.

Abstract: An example display device includes a housing, a protractible hook fittable within the housing, a charging device coupled to the protractible hook, and an actuation member that moves the protractible hook from the retracted position to a protracted position where the protractible hook is positioned external to the housing.

Abstract: In an example a tangible machine-readable medium stores instructions which, when executed by a processor, cause the processor to determine an object generation arrangement for additive manufacturing based on a separation distance between objects, wherein the separation distance varies based on an intended location of object generation.

Abstract: In one example, a notification may be generated to prompt a user to clean a personal computing device. The notification may be based upon usage data of the personal computing device. Multiple types of usage data may be determined and combined to create a composite usage value. The composite usage value may be compared to a threshold usage value. A notification may be generated if the composite usage value exceeds the threshold usage value.

Abstract: In an example of a method for three-dimensional (3D) printing, a polymeric build material is applied to form a build material layer. A fusing agent is selectively applied, based on a 3D object model, onto the build material layer to form a patterned portion. A hydrophobic agent is selectively applied, based on the 3D object model, onto at least a portion of the patterned portion. The hydrophobic agent includes a lipophilic phase discontinuously dispersed within an aqueous phase by a surfactant, wherein the lipophilic phase includes an organosilane having a central silicon atom coupled to a C6 to C24 aliphatic or alicyclic hydrocarbon and multiple hydrolyzable groups, wherein the organosilane is present in the hydrophobic agent at from about 1 wt % to about 20 wt %. The build material layer is exposed to energy to selectively coalesce the patterned portion and form a 3D object layer having a hydrophobic portion.

Abstract: A microfluidic device includes a first channel having a first width and a second channel having a second width greater than the first width. The microfluidic device includes a transition channel having a first end fluidically connected to the first channel and a second end fluidically connected to the second channel. The transition channel expands in width from the first width to the second width so as to promote fluid flow from the first channel to the second channel.

Abstract: Examples of light source distance alterations are described herein. An example device for providing light source distance alterations can include a display that includes a light source coupled to a piezo material to alter a distance between the light source and a corresponding aperture of an aperture layer.

Abstract: A fluidic die may include a fluid channel layer defining a number of fluid channels therein, a slot layer disposed on a side of the fluid channel layer, and a first fluid slot and a second fluid slot defined in the slot layer. At least one of the fluid channels fluidically couples the first fluid slot to the second fluid slot. The first fluid slot and the second fluid slot are defined in the slot layer along a length of the fluidic die.

Abstract: A fabric coating composition can include water, from 3 wt % to 95 wt % oxazoline reactive compound by dry weight including an oxazoline group, and from 3 wt % to 70 wt % cationic charging agent by dry weight. The fabric coating composition can have a pH from pH 2 to pH 6.

Abstract: Disclosed herein are kits, methods, systems, and compositions for threedimensional printing. In an example, disclosed herein is a multi-fluid kit for threedimensional printing comprising: a marking agent comprising a marking component which is a fluorescent color agent that is activated by ultraviolet radiation to emit light in the visible range of from about 400 nm to about 780 nm; a first fusing agent; a second fusing agent different from the first fusing agent; and a detailing agent.

Abstract: Examples of methods performed by an electronic device are described. In some examples of the methods, a machine learning model is trained based on a plurality of interaction events and a corresponding plurality of images. In an example, each of the plurality of interaction events corresponds to one of a plurality of displays. In some examples of the methods, a display is selected of the plurality of displays based on the machine learning model. In an example, an object is presented on the display.

Abstract: According to examples, an apparatus may include a processor and a memory on which are stored machine-readable instructions that when executed by the processor, cause the processor to determine physical characteristics of a build layer of build material particles. The instructions may also cause the processor to determine an adjustment to forming data based on the determined physical characteristics, the forming data to be used informing a subsequent build layer. The instructions may further cause the processor to apply the determined adjustment to the forming data for use in forming the subsequent build layer, in which portions of a three-dimensional (3D) object are to be formed in the build layer and the subsequent build layer.

Abstract: In one example in accordance with the present disclosure, a method is described. According to the method, a pump is selectively activated to draw print fluid from a print fluid delivery system towards a reclamation container. It is detected when a reservoir of the print fluid delivery system is empty. In response to an indication that the reservoir is empty, the pump is selectively deactivated to terminate a print fluid reclamation process.

Abstract: In an example, a machine-readable medium stores instructions which, when executed by a processor may cause the processor to modify data for characterising geometrical modifications for use by each of a plurality of additive manufacturing apparatus, wherein a modification for a particular additive manufacturing apparatus is based on dimensions of objects generated by that apparatus.

Abstract: Examples of methods for notification delivery are described herein. In some examples, a method may include determining a flow state of a user based on biometric data from a biometric sensor in an extended reality device. In some examples, the method may include determining a modality for notification delivery based on the flow state. In some examples, the method may include delivering the notification using the modality.