Experimental Design and Its Posterior Efficiency for the Calibration of Wearable Sensors

Author(s):Lin Ye, Steven W. Su

This paper investigates experimental design (DoE) for the calibration of the triaxial accelerometers embedded in a wearable micro Inertial Measurement Unit (μ-IMU). Firstly, a new linearization strategy is proposed for the accelerometer model associated with the so called autocalibration scheme. Then, an effective Icosahedron design is developed, which can achieve both D-optimality and G-optimality for linearized accelerometer model in ideal experimental settings. However, due to various Continue reading

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Cancers in Children Ages 8 to 12 Are Injury-Related

Author(s): Kirsten H. Walen

Cancers in young children in early growing age was a short PBS (KQED) report (11/21/2014), but without informational source, which prompted a Google search. Sports-associated injuries with medical healing treatments concluded that there were no association between these body traumas and cancer development. But there are other activities from young children, such as “dare-devil” skateboard and bicycling meter-high jumping with potential high energy falls, to serious broken-bone injuries. Falls of children are among the most common causes of US Continue reading

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How Does the Change of Carbon Dioxide Emissions Affect Transportation Productivity? A Case Study of the US Transportation Sector from 2002 to 2011

Author(s):Jaesung Choi, David C. Roberts

A variety of research fields has analyzed actual productivity change from environmental pollution through the Malmquist environmental productivity index, but to our best knowledge, no research has thus far been conducted in the transportation sector to evaluate the effects of a CO2 emissions change on actual productivity. For this reason, this study reviews how actual productivity in the US transportation sector has been affected by the CO2 emissions change for 2002-2012 and then reveals the driving forces behind it. We find that a CO2 emissions increase from 2002 to 2007 has Continue reading

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A Contribution to the Epipelic Algal Ecology in Lotic Ecosystem of Iraq

Author(s): Fikrat M. Hassan, Ali Obaid Shaawiat


CCA analysis of species—environment correlations.
CCA analysis of species—environment correlations.

The study was conducted on epipleic diatoms in a lotic ecosystem. The Al-Shamiyah River was selected which is a distance from industrial activities. Four sites along the river were selected for sampling during the period from March 2013 to February 2014. A total of 173 species of epipelic diatoms were identified. The pennate diatoms predominated and represented about 92.49% of the total diatoms, while centric diatoms formed only 7.51%. The total number of diatoms ranged between 185.1 – 422.34 cell × 104/cm2. Some of the pennate diatom species were Achnanthes affinis Grunow, Achnanthes mintussima Küetzing, Cocconeis placentula var. euglypta (Ehr.) Cleve, Cymbella affinis Küetzing, Diatoma vulgare Bory, Fragilaria capucina Desmazieres, Gomphonema angustatum var. productu Grun., Navicula lanceolata (Ag.) Kuetzing, Navicula radiosa Küetzing, Continue reading

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The Beginnings of Maritime Travel

Author(s): Robert G. Bednarik


Sea trials of the Lombok near the south coast of Flores, 14 April 2008.
Sea trials of the Lombok near the south coast of Flores, 14 April 2008.

Navigation of the sea is shown to have commenced in the order of one million years ago. The earliest evidence for it appears to be that available from Nusa Tenggara, Indonesia, but seafarers colonized also numerous other islands and one continent during the Pleistocene. These early technological feats of hominins provide a reliable measure of their technological limits, and indirectly about their cognitive faculties as well. To explore these aspects, the First Mariners Project conducts numerous experiments, some of which are briefly described in this paper. The implications of its findings for the first colonization of the Americas are also considered. Continue reading

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Call For Papers—Special Issue on Disaster Psychology

PsychologyWhether you are injured physically or psychologically, disasters can take a serious emotional toll. Normal reactions include intense, unpredictable feelings; flashbacks; trouble concentrating or making decisions; disrupted eating and sleeping patterns; emotional upsets on anniversaries or other reminders; strained personal relationships; and physical symptoms such as headaches, nausea or chest pain. Emotional reactions to disasters have predictable patterns according to some researchers. Continue reading

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Change of Receptor Binding Preference of Novel Avian Origin H7N9 in China from 2013 to 2014

Author(s): Wei Hu

The advent of a novel avian origin H7N9 emerged in China in March 2013 is of major health concern, as it has little virulence in birds but can cause severe illness and death in humans. As people continue to get infected by this new virus in 2014, we need to understand the current status and trend of its evolution at the end of year 2014. The influenza viruses have two surface proteins, haemagglutinin (HA) and neuraminidase (NA), which are involved in viral entry into and egress from the host cells respectively. Continue reading

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An Investigation of the Secular Acceleration of Psychiatric Disorders

Author(s): Sebastian Lemke1*, Sunka De Vries2

Secular acceleration, for example an increase in height in groups of people over a period of time of more than a century, is a unique, perhaps “ecological” event. In the study presented here, historical patient files from the Jena Psychiatric Clinic were evaluated in relation to the problem of acceleration. A first sampling of 119 patient files for the years 1880-1890 revealed that, for children and adolescents up until the end of their twentieth year of life, the average age at the time of their first admission was 17 years. Compared to this, the first admission of a second sample of 132 patient Continue reading

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Transmittance Spectrum of Unbranded Sunglasses Using Spectrophotometer

Author(s): Huseyin Gursoy, Hikmet Basmak, Hamza Esen, Ferhan Esen

Background: The sunglass standards are not strictly implemented in many countries except Aus-tralia. The purpose of the study was to evaluate the optical properties of unbranded sunglasses for light transmittance. Methods: Unbranded sunglasses with no information about their specifications were included. They were allocated to two groups based on their prices; the ones > 25 US$ (Group A) and the cheaper ones (Group B). Their transmittance spectrum was measured between 190 nm and 900 nm using a double beam scanning spectrophotometer. The European standard for sunglasses Continue reading

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What Do Teachers Desire in Music Digital Textbook for Leaner-Centered Curriculum?

Author(s): Sahoon H. Kim


A screen capture of a function music teachers wanted for DT (apple.com).
A screen capture of a function music teachers wanted for DT (apple.com).

We are living in the 21st century that requires us to know how to integrate paper based curricula into interactive media. The purpose of the study is to provide exemplary cases that music teachers hope for their music classes through using Digital Textbook. For this purpose, two times of interviews with ten music teachers in South Korea were conducted. Case study and grounded theory methodology were adopted as a tool for analyzing the data. As a result, the teachers’ desires for Digital Textbook were categorized into two perspectives: learner-centered learning, and collaborative learning & connection with open sources. Continue reading

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