The Debye theory of solid-state heat capacities

“The Debye theory of solid-state heat capacities” gives a careful account of the Debye cut-off. We start by looking at a monatomic linear chain, leading to degrees of freedom and the equipartition of energy at the high-temperature (classical) limit. Reasonable approximations lead more naturally to the Born–von Karman model than to Debye, but Debye follows via a further reasonable step.

Four Strategies Of Murshid Tariqat In Optimizing Muzakiy Behavior In West Nusa Tenggara

Indonesia, with 87.18% Of Muslims, has a high zakat potential reaching 217 trillion per year. However, the law and various ways suggested by experts still fail in collecting zakat. Through the data of collecting zakat, which only reaches 1.2%, therefore, a new approach and way are needed to maximize the collection of zakat. Research with observations, documentation, and interviews found that murshid tariqat has a strategic role in maximizing zakat collection. Murshid had a strong influence on students. Students' adherence to murshid in religious and socio-political affairs reached an average of 98%. The readiness of students' obedience in terms of zakat reached 100%. The high compliance and willingness to comply is a reasonable step to maximize the murshid order's strategic role in collecting zakat. Murshid's strategic step in collecting zakat can be maximized through four stages; first, establishing institutions amil zakat infaq and sadaqah; second, socialization and education about the law and wisdom of zakat, third professionalism ammil, fourth, distribution of zakat transparent and on target

Development of Parametric Design System for Disc Cams with Translating Roller Followers

The parameterized design system of disc cams with translating roller followers was studied. The secondary development of AutoCAD was chosen as the developing tool. According to the design theories of the disc cam, the solution steps of the best offset and base circle radius were proposed in this work. All the solution steps meet the requirements of the motion parameters of the push bar. The method of identifying the reasonable step angle for the given fitting precision was developed. The profile curve of the disc cam can be drawn automatically and saved as the ‘dwg’ format file. Finally, an example was used to verify the feasibility of the system.