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ALTCALC : Electronic Altitude and Distance Calculating Device
J. G. Casia,K. A.,De La Torre,S. E.,Nellas 국제과학영재학회 2017 APEC Youth Scientist Journal Vol.9 No.1
Altitude measurement in fields, forestry and engineering remain essential but still conventional methods of altitude measurement remain challenging. Present altitude measurement methods include height poles for trees and photogrammetric instruments. Both methods remain arduous as either process is both time and money consuming or susceptible to large parallax errors. In this innovative work an altitude and distance calculating device out of potentiometers based on trigonometry was developed. A laser diode was attached to a potentiometer, and the other components were soldered together in a circuit board. Device accuracy and precision was determined. User satisfaction survey was also noted. For the altimeter testing, the lasers were pointed at the top of the object and the device was placed at a 1-meter distance from the base of the object. The device was set to measure different heights from 0.5 m to 2.5m. For the distance sensor, the lasers were pointed at a 1-meter height and the device was set to measure different distances from 0.5m to 2.5m. Three replicates for each trial were performed and device readings were then compared to actual measurements to determine accuracy. Standard deviations of reading were then computed to determine precision. Net Promoter Score was used in order to assess external evaluator feedback. An Arduino based altimeter and distance sensor was successfully fabricated with 94.2 percent degree of accuracy and 95.4 percent precision for height measurement. For the distance sensor, a 91.4% accuracy, and 95.4% precision was determined. The device garnered a net promoter score of 66%.
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Deciphering short stature in children
Nella Polidori,Valeria Castorani,Angelika Mohn,Francesco Chiarelli 대한소아내분비학회 2020 Annals of Pediatirc Endocrinology & Metabolism Vol.25 No.2
Short stature is a common reason for referral to pediatric endocrinologists. Multiple factors, including genetic, prenatal, postnatal, and local environmental factors, can impair growth. The majority of children with short stature, which can be defined as a height less than 2 standard deviation score below the mean, are healthy. However, in some cases, they may have an underlying relevant disease; thus, the aim of clinical evaluation is to identify the subset of children with pathologic conditions, for example growth hormone deficiency or other hormonal abnormalities, Turner syndrome, inflammatory bowel disease, or celiac disease. Prompt identification and management of these children can prevent excessive short stature in adulthood. In addition, a thorough clinical assessment may allow evaluation of the severity of short stature and likely growth trajectory to identify the most effective interventions. Consequently, appropriate diagnosis of short stature should be performed as early as possible and personalized treatment should be started in a timely manner. An increase in knowledge and widespread availability of genetic and epigenetic testing in clinical practice in recent years has empowered the diagnostic process and appropriate treatment for short stature. Furthermore, novel treatment approaches that can be used both as diagnostic tools and as therapeutic agents have been developed. This article reviews the diagnostic approach to children with short stature, discusses the main causes of short stature in children, and reports current therapeutic approaches and possible future treatments.
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Need For Sound : An Aleatoric Music Generator Motivated From Driving
오채령(Nella Cheryoung Oh),이다영(Lee Dayoung) 한국HCI학회 2019 한국HCI학회 학술대회 Vol.2019 No.2
본 작품 “Need For Sound”는 운전의 형식으로 연주하는 악기로, 운전을 하며 사용자가 변화할 수 있는 요소들을 음악의 코드와 비주얼의 변화로 확장한 작품이다. 사용자는 이 작품을 통해 맵 이곳저곳을 각자의 속도로, 각자의 방향으로 운전하며 자신만의 곡을 만들 수 있다. 핸들의 회전각은 음악의 모드를 변화한다. 회전각을 7 개로 나누어, 이에 따라 자동차의 전조등 색도 변화한다. 휠의 기어는 코드 진행방식을 변화한다. 기어마다 각자 다른 코드 진행방식을 가지고 있고, 기어를 변환할 때 마다 코드 진행방식과 함께 하늘과 배기가스의 색이 변화한다. 엔진 회전속도는 재생되는 음악의 음량을 변화한다. 회전속도가 클수록 음량이 커진다. 자동차의 z 축 이동방향은 음의 상향, 하향 여부를 결정한다. 자동차가 상행할때 음도 상행하고, 자동차가 하행할 떄 음도 하행한다. 평지 위를 달릴 때에는 임의의 리듬으로 해당 모드에서의 음이 재생된다. 장애물에 부딪히면 장애물이 터지면서 크래쉬 심벌 소리를 낸다. 본 작품을 체험한 사람들이 음악 창작에 대한 관심을 환기할 수 있을 거라 기대한다.
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Insulin resistance and type 2 diabetes in children
Valeria Castorani,Nella Polidori,Cosimo Giannini,Annalisa Blasetti,Francesco Chiarelli 대한소아내분비학회 2020 Annals of Pediatirc Endocrinology & Metabolism Vol.25 No.4
Type 2 diabetes (T2D) is an emerging health risk in obese children and adolescents. Both environmental (lack of physical activity, excess nutritional intake, sedentary lifestyle) and genetic factors contribute to this global epidemic. The growing prevalence of T2D in youth is also associated with a consistently increased incidence of metabolic and cardiovascular complications. Insulin resistance (IR), i.e., whole-body decreased glucose uptake in response to physiological insulin levels, determines impaired glucose homeostasis and it is recognized as cardinal trigger of T2D and cardiovascular disease in both adults and children. In particular, IR and beta-cell dysfunction lead to the persistent hyperglycemia which characterizes T2D. Indeed, both pathological states influence each other and presumably play a crucial, synergistic role in the pathogenesis of T2D, although the precise mechanisms are not completely understood. However, beta-cell dysfunction and IR induce impaired glucose metabolism, thus leading to the progression to T2D. Therefore, understanding the mechanisms correlated with the decline of beta-cell function and IR is crucial in order to control, prevent, and treat T2D in youth. This review focuses on the current knowledge regarding IR and T2D in children and adolescents and showcases interesting opportunities and stimulating challenges for the development of new preventative approaches and therapeutic strategies for young patients with T2D.
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