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Metallic materials are an important area of study in materials engineering due to their long history and diverse physical properties. They also have great potential for modern applications, such as finding ways to make metals harder and more durable, and developing new materials using nanotechnology. Understanding the properties and applications of these metallic materials can help solve a wide...

It is argued that embryonic stem cell research should be stopped due to bioethical concerns and research safety issues. Embryos should be respected as living beings with the potential to differentiate into human beings and should not be subjected to the risks of incomplete research. Instead, alternatives such as adult stem cell research should be used to advance biotechnology.   Science and...

This article explains why altruistic behavior is rare in humans from an evolutionary perspective and discusses how the reciprocity hypothesis suggests that altruistic behavior is actually for mutual benefit. In doing so, it highlights the continued importance of altruistic behavior in human society and nature.   Thick, thick, thick, I’ll give you my old house, I’ll give you a new...

The issue of free riding in group work is stressful for many college students. The best way to prevent free riding is to create a sense of moral obligation and conscience through group communication. This is more likely to encourage continued cooperation and good behavior than a simple grade penalty.   It’s the day before the group presentation, but the group hasn’t received the...

The 2016 Go match between AlphaGo and Lee Sedol put deep learning in the spotlight. Deep learning enables AI to learn on its own and has revolutionized many fields, including image recognition, speech recognition, and more. AlphaGo won the game through unsupervised learning, and advances in deep learning technology will positively transform industries such as healthcare, education, and finance...

With the rapid proliferation of smartphones, touchscreen technology has revolutionized our daily lives. Resistive, capacitive, ultrasonic, and infrared touchscreen technologies, each with their own advantages and disadvantages, have been applied to a variety of electronic devices, not just smartphones, to increase convenience and efficiency.   When you get on the subway on your way home and...

Dye-sensitized solar cells are a technology that uses dyes to absorb sunlight and convert it into electricity, with the advantages of low cost, a wide range of colors, and the ability to operate in low light levels. This technology has potential applications in various fields such as architecture, agriculture, and environmental protection, and commercial success is expected to be achieved by...

DuPont sold its textile business and adopted the Six Sigma movement to transform itself into a multidisciplinary science company. The Six Sigma movement was a key tool that enabled DuPont to succeed in new areas through quality improvement and management innovation. DuPont has made great strides in the agriculture and food sectors and has established itself as a company that practices...

Learn how a large supermarket used data mining to discover that diapers and beer sales are related, and then changed the product mix to increase sales. We explain in detail how data mining works, the different types of data mining, and what it can do for you. Data mining can be used in many fields, not just marketing, and will play an increasingly important role in the era of big data.   You...

Multiverse theory, the theory that there are an infinite number of universes, is a controversial idea that, while attractive and full of promise, is practically unverifiable, making it difficult to grant it scientific status. Although multiverse theory is not currently recognized as science according to Kuhn and Feynman’s definition of science, its philosophical implications and...