Camera-Based Remote Photoplethysmography for Estimation of Heart Rate using Single Board Computers

The objective of this project was to develop a wireless, noncontact monitoring system that measures multiple physiological parameters in human faces from a distance using a camera. Compared to traditional sensors, this monitoring system does not use wires or adhesives, providing a safer, more user-friendly application. The goal of the monitoring systems was to estimate heart rate (HR). The current practices of measuring HR involve collecting electrocardiogram (ECG) signals from adhesive electrodes placed on various parts of the body and using a pulse oximeter (PO) typically placed on the ear lobe or finger. We were able to successfully create 2 monitoring systems and compare their results to the PO. Both monitoring systems are low-cost at less than $200. Neither system has been shown to exist in literature thus making them novel implementations. After analysis, we found the estimated HR from one of the systems to be not significantly different from the PO readings. In conclusion, we were able to estimate HR from a distance using a camera-based system which can have many useful applications, potentially in the Neonatal ICU and in other home health settings

Storytelling, Spoon-Feeding, and Traditions: Teaching Art History Better

As an art historian, it is increasingly hard to teach art history to students who have no background or interest in history. This paper definitely does not criticize my university or my state’s educational practices, but I believe that teaching history is very important to all of our students as citizens. I was educated in, have taught in three countries, and have published in four countries. That said, in the past 20 years, it has become more and more difficult to teach the history of art, artists, and stylistic movements. Why? The majority of my students lack any background or knowledge concerning basic history, culture, and traditions. So, how do we, as educators, overcome this lack of knowledge, and what can we do about this deficiency – or should we do anything about this at all? Should we be concerned? Is art history (and maybe other subjects in the humanities) doomed in the future? What can be done about this, and can any of these remedies be transparent in the course of our teaching? Solutions to these problems that I have effectively employed involve storytelling, spoon-feeding, and explaining traditions, and these solutions have been extremely successful

Three dimensional ink-jet printing of biomaterials using ionic liquids and co-solvents

1-Ethyl-3-methylimidazolium acetate ([C2C1Im][OAc]) and 1-butyl-3-methylimidazolium acetate ([C4C1Im][OAc]) have been used as solvents for the dissolution and ink-jet printing of cellulose from 1.0 to 4.8 wt%, mixed with the co-solvents 1-butanol and DMSO. 1-Butanol and DMSO were used as rheological modifiers to ensure consistent printing, with DMSO in the range of 41–47 wt% producing samples within the printable range of a DIMATIX print-head used (printability parameter < 10) at 55 °C, whilst maintaining cellulose solubility. Regeneration of cellulose from printed samples using water was demonstrated, with the resulting structural changes to the cellulose sample assessed by scanning electron microscopy (SEM) and white light interferometry (WLI). These results indicate the potential of biorenewable materials to be used in the 3D additive manufacture process to generate single-component and composite materials

Manifesting power : gender and the interpretation of power in archaeology

Manifesting power menghadapkan hubungan antara gender dan kekuasaan dalam masyarakat presejarah dan bersejarah. ini membahas sejauh mana prasangka kita tentang sifat kekuasaan, dan hubungan antara jenis kelamin, berakar pada pengalaman kita sendiri tentang masyarakat barat, dan berpendapat bahwa baik kondisi dan prepepsi mungkin sangat berbeda di anatara orang- orang di masa lalu.xiii, 196 p.: ill.; 24 c

Parallel practices: P.S. Richards and the architectural practices with which he was associated in Australasia

© 1998 Gay Caryll SweelyArchitect Percival Selwyn Richards (1865-1952) practiced for sixty-five years, fifty-three of which were in Ballarat. From 1881-93, he was introduced to the ideas and designs of some of the most influential Australasian colonial architects in Christchurch and Melbourne. After the Land-Boom Crash, he partnered in Ballarat with eccentric provincial architect William Brazenor. Following federation, Richards' firm (including A. Lanyon Clark, H.L. Coburn, and G.S. Richards) dominated the profession and continued to showcase contemporary Australian designs in the district until the mid-1960's. Research for this thesis has uncovered the life and designs of Federation- era architect P.S. Richards and the one-hundred-year history of his practice in Ballarat. The history of the firm begins with colonial architect William Brazenor's successful tenders for the building of the railway embankment at Ballarat West and cattleyards around the goldrush city in the early 1860's

An Architectural History of the Canterbury Hebrew Congregation

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Detecting “Invisible” Dwellings in the Maya Area Using Electromagnetic Induction: Significant Findings of a Pilot Study at Chau Hiix, Belize

AbstractSettlement studies of the prehispanic Lowland Maya have tended to rely upon dwelling remains that are visible at the ground surface, though floors and living surfaces that leave no surface indications are known to exist. Such “invisible” dwellings have been encountered beneath platforms and in “vacant terrain” lacking surface indications of architecture, and given more systematic attention, could represent a sizable and socially significant segment of the prehispanic populations in the region. This paper describes the application of electromagnetic induction, a geophysical technique, for locating nonplatform dwellings at Chau Hiix, Belize. A conductivity signature for nonplatform dwellings was identified that includes plaster, nonplatform floors, both in an area of vacant terrain and beneath a residential terrace, in association with trash pits and episodes of limestone bedrock mining, presumably for the acquisition of raw material for the floor. The technique also holds promise for locating ground-level floors, use-areas, and possibly footpaths. While this pilot study was limited in scope, it demonstrates the enormous potential of electromagnetic induction for locating these otherwise elusive features.</jats:p