Re: Sims 4 Into The Future Conversion
Aquarium Morris
I recently got into ROS2 and simulating robots and I started with the official Nvidia guide that talks about the turtlerobot3. I downloaded ROS2 Humble (for Ubuntu 22.04) and everything according to their guide, but when I git cloned the repo and tried the xacro command to convert .xarco to .urdf for Isaac Sim, I get the following error:Why isn't it detecting the "turtlebot_description" folder?
Seek medical attention for signs and symptoms that concern you or interfere with your ability to function. If the underlying cause is a neurological disease or another medical condition, quick diagnosis and treatment may be important. If the diagnosis is functional neurologic disorder, treatment may improve the symptoms and help prevent future problems.
i've never actually played sims 3 but I thought the concept of going to the future seems cool and if EA don't add it can the modding community do it (i'd do it myself but I don't know how to code) or has it already been made and if so can someone provide a link
While the DateTime object can handle dates before 1970, the convert() command cannot. This is because the convert() command first converts all values into UNIX time, which (as you have noted) starts in 1970.
@jordan.johnson, Yes, objects in our model have a specific creation date, which is used to determine future actions. For example, people have their date of birth stored (which is often before 1970), which we use to determine (for example) their age, which is then uses in the model to trigger certain events (e.g. retirement). There's similar uses in our model for buildings, some of which were constructed before 1970.
While a workaround for this specific example might be possible, what we really want is to just put these dates in a DateTime object and treat all dates in the model the same way. The fact that the DateTime object does support pre-1970 dates, but that we just can't convert our strings into DateTime objects, is the frustrating part.
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Nonlinear techniques such as stimulated Brillouin scattering (SBS) imaging [27, 28] and impulsive Brillouin imaging [29, 30] form an alternative group of Brillouin imaging methods that exploit the formation of an acoustic wave by electrostriction or thermal excitation. The phenomenon of electrostriction is associated with the change in material density as the result of application of a strong electromagnetic field. Light absorption and thermal expansion could be the second route for excitation of phonons in the material. Regardless of mechanism, phonons generated as the result of exposure to high-intensity periodic optical fields can be probed by a weaker beam of light to obtain the phonon propagation speed and ultimately some mechanical properties of a material. The efficiency of phonon generation in this case is proportional to the pump light intensity, and hence the probe scattering could be orders of magnitude stronger than in the scenario of spontaneous Brillouin scattering. High scattered signal magnitude translates into better signal-to-noise ratio of stimulated versus the spontaneous techniques, and consequently faster acquisition times.
The non-contact and label-free nature of Brillouin imaging makes this technology an ideal solution for in vivo and in situ imaging for a number of applications in biomedical or industrial monitoring. The footprint of a Brillouin imaging system and its reliance on bulk-optical alignment is, however, the major drawback in the translation of this technology into real-world environments. Despite the dramatic improvement in the performance of Brillouin microscopes since the first publication by Koski and Yarger in 2005 [1], much more effort is needed to integrate the instrument into a scalable, robust and easy to transport device. Some progress in this objective was made by Kabakova et al with a study of the performance of Brillouin fiber probes [40]. Single and dual fiber probe designs were evaluated in terms of their collection efficiency and imaging performance, with dual fiber design offering a straightforward solution to the removal of unwanted fiber-generated Brillouin scattering background [40]. However, further work is needed to improve the efficiency of the scattered light collection in such fiber probes and to create monolithic fiber devices capable of 360 imaging within the tissue [59].
Similarly, Randall et al sought to determine the effect of fiber orientation with BFS in wetted rat tail collagen and horse hair keratin [22]. Differences in peaks with scattering vectors parallel, perpendicular and at a 45 angle with the length of the fiber were demonstrated, with implications in fiber structure and probing direction on Brillouin measurements. Lees et al similarly measured BLS across wetted collagen and various dried and/or mineralized tissues including antler (bone), tibia and tendon and compared sound velocity resolved into axial and radial components for each material [82]. Optical refractive index of mineralized samples was found via Brillouin scattering. While mineralization is not standard practice for tissue sample preparation for biological characterization, the technique enabled sample compatibility with the optical systems of that time.
The field of tissue engineering aims to recapitulate functional biofidelic tissues and organs using a combination of biomaterials, cells and relevant factors. Also known as tissue constructs, tissue analogues and tissue phantoms, engineered tissues currently serve as a more ethical and readily producible platform for drug screening, disease modeling, or for patient-specific organ replacement. While many methods to fabricate 3D engineered tissues exist, bioprinting is the most recent development in enabling the generation of complex structures. While a variety of biomaterials are compatible with bioprinting technologies, hydrogels have been the most commonly investigated due to their biocompatibility and proximity of their physical characteristics with ECM. These hydrogels, also known as 'bio-inks', are composed of natural, synthetic or composite biomaterials that may be chemically or crosslinked via conjugation with a photo-initiator to form controlled structures. Being soft and viscoelastic, hydrogel mechanics are difficult to characterize conventionally through rheology which only allows assessment of bulk volumes. Given that cells are sensitive to local environmental cues, there exists an immediate opportunity to utilize BM for studying and characterizing properties of bioprinted hydrogel constructs on a microstructural level that is directly relevant to the cells. This has the potential to provide more conclusive insights into cellular responses and construct remodeling processes. In [92], Correa et al demonstrated an efficient Brillouin data collection and image analysis workflow on collagen gelatin hydrogels with different stiffness created by varying crosslinker concentration and formalin concentration. This is valuable for analysis of biologically-relevant tissue analogues with physiological hydration levels and subjected to routine fixation methods.
While promising, clinical BLS measurements of corneal or ocular tissue necessitate consideration and resolution of two important issues: (i) the intrinsic risk of laser irradiation damage to the eye and (ii) motion-induced vibrational noise. More advanced optical technologies able to provide improved signal to noise ratio will enable a safe operational laser power compatible with live measurements of ocular tissues. In addition, future improvements to signal detectors and the development of more sophisticated processing algorithms will be able compensate and filter out natural movements and vibrations. These considerations will be further discussed in section 6.
Note that M_s is the longitudinal modulus of the hydrated solid polymer network (that includes contribution of fluid bound to the network) rather than the longitudinal modulus of bulk dry polymer this network is made of. The linear relation described by equation (9) is clearly an approximation and does not take into account many important factors of hydrogel viscoelasticity, e.g. any interaction between fluid and solid fractions, the internal geometric structure of the pores, pores size, the number of crosslinks or the network topography. The biphasic model should only be applied in the limit \epsilon \to 1, in which it proves to be quite useful in the explanation of Brillouin scattering data from highly-hydrated materials such as hydrogels [25] and cornea [30].
In some instances, a conversion needs to be defined between the two systems due to differences in units, data types, measurement systems, or precision. Dexter allows the integrator to create several different types of conversions, including: measurement systems, unit, logic (if/then, lookup table), and pre-existing code. These conversions can also be saved into a library for future use.
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Because of a transnational nature, live virtual learning allows for a greater and deeper level of feedback. Chat functions in videoconferencing platforms enable participants to converse easily and ask real-time questions in ways that would be too disruptive in a conference-room setting. Virtual formats also allow for configuration and tailoring. When the transforming manufacturing company launched its digital program, lessons were translated into multiple languages, reinforcing, once again, the underlying message: management is investing in you.
Companies often require designers to work with and operate between different computer-aided design (CAD) systems. To interoperate between these systems, a neutral design standard for CAD models is needed that allows for generation, customization, and parameterization. Current standards often fail to incorporate file history and design intent. The research proposes a simplified, neutral design format that can be used to generate models in different CAD systems. The format proposes additional functionality not yet found in existing neutral formats or scripts. The system was tested by generating models in both NX and CATIA, then comparing the models for accuracy, flexibility, and similarity of the results. Utilizing the principles established with the neutral framework, a system was developed that facilitates a collaborative CAD modeling environment that supports the interaction of models within virtual reality (VR). A framework is presented that allows for the models to be created and then used in VR without the need for conversion. Strategies are discussed for minimizing the impacts of latency and unit testing was conducted to evaluate functionality. Furthermore, feasibility of using modern game engines such as Unity, Unreal Engine, and Godot to aid in the development of both VR and physics simulations are discussed. The above foundation and frameworks enhance collaboration in training and simulation in VR environments. This research demonstrates that by using neutral design standards, collaboration could be improved between different software, as well as between different engineers. Common strategies can be used for solving issues with conversions across the design space and integrated into future VR systems. This research will be indispensable to furthering studies of collaboration and design in remote environments.
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