Impacts of Arrests for Sexual Crimes on Child Sexual Exploitation

The purpose of this study is to analyze the relationship between the use of teen pornography and the increase of sexual exploitation of children in San Bernardino County. This study sought to explain and answer the following question regarding sexual exploitation of children: 1) What is growth of child sexual exploitation in San Bernardino County? Secondary data utilizing the city of San Bernardino’s arrest records for sexual offenses from the years 2015 to 2019 was analyzed to look at trends of crime against minors. What was found was that virtually all crimes found were committed by women and a very insignificant amount of crimes committed against minors were reported. There was a lack of reporting on sexual crimes against children, although these crimes are known to be prevalent in this area from information from local task forces. Implications of this disconnect between the study’s findings and information from local task forces is discussed, and implications of the arrests that do occur are discussed

The Unscientific Chinese

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Thirty endangered languages in the Philippines

There are 6,809 languages spoken in the world today. Conservative estimates are that the world\u27s languages are currently dying at the rate of at least two languages each month, and linguists predict that most of today\u27s languages will die out in the next 100 years. Since 1962, the author has been gathering field data on some of the smallest language groups in the world-the Philippine Negritos. This paper will explain why the thirty-plus Negrito languages in the Philippines are endangered, and what the projected future is for these numerically tiny post-foraging societies in the 21st century. The argument will be supported by a review of the population sizes, interethnic human rights problems, and the environmental destruction of the rainforests of these marginalized peoples

The Shackleton Memorial Library at the Scott Polar Research Institute: a new international resource for the study of the polar regions (poster)

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Analysis of 3D-printed metal for rapid-prototyped reflective terahertz optics

We explore the potential of 3D metal printing to realize complex conductive terahertz devices. Factors impacting performance such as printing resolution, surface roughness, oxidation, and material loss are investigated via analytical, numerical, and experimental approaches. The high degree of control offered by a 3D-printed topology is exploited to realize a zone plate operating at 530 GHz. Reflection efficiency at this frequency is found to be over 90%. The high-performance of this preliminary device suggest that 3D metal printing can play a strong role in guided-wave and general beam control devices in the terahertz range.Comment: 13 pages, 6 figures, submitted to Optics Expres

In the shadow of the laser phantom needle cross: dynamic air-plasma aperture sheds light on terahertz microscopy

Two plasma filaments crossing above the target create a subwavelength window for terahertz microscopy that excludes any subwavelength probe in vicinity

Holocene Foragers and Interethnic Trade: A Critique of the Myth of Isolated Independent Hunter-Gatherers

It is popularly thought that today's existing hunter-gatherers lived until recently in isolation, independent of food-producing peoples. The present thesis takes a different view, proposing that middle-to-late Holocene foragers followed an economy based heavily on trade relationships with neighboring food producers. It is argued here that the symbiosis observed today among such groups as Southeast Asian Negritos, the !Kung Bushmen, and the African Pygmies is neither recent nor anomalous but reflects a subsistence strategy that has been followed by most hunter-gatherers for millennia