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Improved slime mold algorithm boosts efficiency in e-commerce cloud data migration

As e-commerce platforms grow ever more reliant on cloud computing, efficiency and sustainability have come to the fore as urgent pressures on development. A study published in the International Journal of Reasoning-based Intelligent Systems has introduced an innovative approach to the problem based on a slime mold algorithm (SMA). The work could improve both performance and energy efficiency for e-commerce systems.

At the core of the work is the development of BOSMA—the Balanced Optimization Slime Mold Algorithm. The SMA is a heuristic optimization technique inspired by the natural behavior of slime molds.

Slime molds are useful models for algorithms because they excel at finding efficient paths through complex environments and adapting to changing conditions. Moreover, they do so without any central control system. They can explore their surroundings by sending out multiple tendrils, pseudopodia, in different directions, adjusting their shape and connections in response to feedback such as nutrient availability or obstacles.

Terminal renal failure as a contributor to high-sensitivity cardiac troponin T elevations: insights from patients undergoing renal transplantation

Background False cardiac troponin (cTn) elevations from non-cardiac causes are a major concern. We aimed to assess terminal renal failure as a possible non-cardiac cause of elevated high-sensitivity cTnT (hs-cTnT) concentrations using renal transplantation as an in vivo model of rapid restoration of renal function.

Methods We analysed consecutive patients with end-stage renal disease (ESRD) undergoing renal transplantation at a single centre. Patients with perioperative myocardial infarction or injury were excluded. Changes in hs-cTnT and creatinine were measured pretransplant and at four post-transplant intervals (day 1, days 2–5 and days 14–180). A decrease of ≥25% in hs-cTnT within 24 hours post-transplant was deemed evidence of renal clearance recovery.

Results Among 45 patients (median age 67 years, 31% women), the median pretransplant plasma creatinine concentration was 608 μmol/L (IQR 482–830), and fell to 425 μmol/L (IQR 337–619) on day 1289 μmol/L (IQR 201–492) on days 2–5 and 126 μmol/L (IQR 103–191) on days 14–180 (p0.001, p0.001 and p=0.003, respectively). The median pretransplant hs-cTnT concentration was 48 ng/L (IQR 34–70). It fell to 26 ng/L (IQR 15–38; geometric mean of relative change 36%) on day 1 (p0.001) and then remained constant on days 2–5 (26 ng/L (IQR 18–35)) and days 14–180 (25 ng/L (IQR 20–30), p=ns).

Hiding secret codes in light can protect against fake videos

Fact-checkers may have a new tool in the fight against misinformation.

A team of Cornell researchers has developed a way to “watermark” light in videos, which they can use to detect if video is fake or has been manipulated.

The idea is to hide information in nearly-invisible fluctuations of lighting at important events and locations, such as interviews and press conferences or even entire buildings, like the United Nations Headquarters. These fluctuations are designed to go unnoticed by humans, but are recorded as a hidden watermark in any video captured under the special lighting, which could be programmed into computer screens, photography lamps and built-in lighting. Each watermarked light source has a secret that can be used to check for the corresponding watermark in the video and reveal any malicious editing.

A guidance to intelligent metamaterials and metamaterials intelligence

The bidirectional interactions between metamaterials and artificial intelligence have recently attracted much attention. Here, the authors stand from a unified perspective to discuss intelligent metamaterials (AI for metamaterials) and metamaterials intelligence (metamaterials for AI).

New cooling technology raises power and longevity of solar cells

A team of international researchers led by King Abdullah University of Science and Technology (KAUST) and including researchers from King Abdulaziz City for Science and Technology (KACST) has developed a new composite material that enhances the performance of solar cells. Solar cells with the material functioning for weeks in the Saudi Arabia desert showed higher power output and a longer operation time than solar cells without. Additionally, the material is cheap to fabricate and reduces the cost of maintaining solar cells. The study can be read in Materials Science and Engineering.

Composite material keeps solar cells cool using air moisture and no electricity to extend solar cell lifetime more than 200%.

Metamaterials: Highly Twisted Rods Store Large Amounts of Energy

An international research team coordinated at KIT (Karlsruhe Institute of Technology) has developed mechanical metamaterials with a high elastic energy density. Highly twisted rods that deform helically provide these metamaterials with a high stiffness and enable them to absorb and release large amounts of elastic energy. The researchers conducted simple compression experiments to confirm the initial theoretical results. Their findings have been published in the science journal Nature. (DOI: 10.1038/s41586-025–08658-z)

Be it springs for absorbing energy, buffers for mechanical energy storage, or flexible structures in robotics or energy-efficient machines: Storage of mechanical energy is required for many technologies. Kinetic energy, i.e. motion energy or the corresponding mechanical work, is converted into elastic energy in such a way that it can be fully released again when required. The key characteristic here is enthalpy – the energy density that can be stored in and recovered from an element of the material. Peter Gumbsch, Professor for mechanics of materials at KIT’s Institute for Applied Materials (IAM), explains that achieving the highest possible enthalpy is challenging: “The difficulty is to combine conflicting properties: high stiffness, high strength and large recoverable strain.”

Clever arrangement of helically deformed rods in metamaterials.

Flexible transmitter chip could make wireless devices more energy efficient

Researchers from MIT and elsewhere have designed a novel transmitter chip that significantly improves the energy efficiency of wireless communications, which could boost the range and battery life of a connected device.

Their approach employs a unique scheme to encode digital data into a , which reduces the amount of error in the and leads to more reliable communications.

The compact, flexible system could be incorporated into existing internet-of-things devices to provide immediate gains, while also meeting the more stringent efficiency requirements of future 6G technologies.

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