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1.
Article in English | LILACS, BBO | ID: biblio-1365230

ABSTRACT

ABSTRACT Over the past year and a half dental education has been conducted primarily online due to the SARS-CoV-2 pandemic. During the pandemic, we have spent many hours a day on our computers, mobile phones, and tablets to gather information and participate in online seminars and classrooms. Health consequences resulting from the overuse of these devices include carpal tunnel syndrome as well as computer vision syndrome (CVS). Computer vision syndrome, also known as digital eye strain, has several associated features such as eye burning, strained vision, dry eye, blurred vision, and associated neck and shoulder pain. Several predisposing factors have been linked with CVS, but often this problem gets ignored. The management of this syndrome is aimed at educating dentists on computer use, position, and the surrounding environment. Considering all this, we must ensure that we spend some time away from these devices every day to avoid any significant vision problems. The objective of preparing this manuscript was to provide a brief overview of the increased prevalence of computer vision syndrome and its associated features.


Subject(s)
Vision Disorders/prevention & control , Artificial Intelligence , Dentists , Eye Diseases/prevention & control , COVID-19/complications , Microcomputers , Carpal Tunnel Syndrome , Prevalence , Risk Factors , Education, Dental , Screen Time , India
2.
Article in Chinese | WPRIM | ID: wpr-928880

ABSTRACT

Aiming at the current situation of performance testing of hemodialysis extracorporeal circulation tubing, which has slow efficiency, inaccurate measurement, and inconvenient testing, a portable detection system for testing the performance of hemodialysis extracorporeal circulation tubing is designed. The system mainly includes a hardware system and a software system. The hardware system uses STM32F407 single-chip microcomputer as the core to design the driving control of the roller pump; the software system uses the C++ real-time operating system, and the flow detection data is transmitted to the upper computer through RS485 communication and displayed. Experimental showed that the system detects the accuracy and the stability of the flow rate. It has the characteristics of stability and high precision. The relative error of the experimental measurement is within the range of ±10%. The weight of the whole machine is 2 kg, which improves the efficiency by 50% compared with the traditional detection method.


Subject(s)
Computers , Equipment Design , Extracorporeal Circulation , Microcomputers , Renal Dialysis , Software
3.
Article in Chinese | WPRIM | ID: wpr-928856

ABSTRACT

In order to effectively prevent the damage to the human body caused by abnormal oxygen concentration in the medical hyperbaric oxygen chamber, a ZigBee-based medical hyperbaric oxygen chamber oxygen concentration automatic control system is designed. The data acquisition module uses the microprocessor STM32F103C8T6 to receive the oxygen concentration data of each acquisition point, and the ZigBee of the data processing module transmits the processing results to the MSP430G2553 single-chip microcomputer at the receiving end of the slave. The MSP430G2553 single-chip microcomputer uses a self-organizing TS fuzzy neural network (SOTSFNN) and adds activation. The intensity concept realizes automatic control of the oxygen concentration in the hyperbaric oxygen chamber, and controls the buzzer to give an alarm when the oxygen concentration is lower than 19 mg/L and higher than 23 mg/L, and displays the current real-time oxygen concentration through LCD12864. The experimental results show that as the communication distance increases, the packet loss rate of the system is always lower than 5%, and the signal strength under the same communication distance is better; the system can effectively control the oxygen concentration value within the set range, and the oxygen concentration. The control accuracy is high and the stability is good.


Subject(s)
Humans , Hyperbaric Oxygenation , Microcomputers , Oxygen
4.
ABCS health sci ; 46: e021207, 09 fev. 2021. tab
Article in English | LILACS | ID: biblio-1152228

ABSTRACT

INTRODUCTION: Primary headaches, defined as disorders in themselves caused by independent pathomechanisms and not by other disorders, are prevalent in university students and considered one important health problems in the world. OBJECTIVE: To investigate the prevalence of primary headaches and analyze associations with sociodemographic characteristics and the use of electronic devices by university students. METHODS: A cross-sectional observational study analysis was carried out with a sample of 1,143 students of both genders who responded to the questionnaire on demographic, socioeconomic aspects, use of electronic devices, and on the primary headaches. Descriptive analysis, bivariate analysis, and Poisson regression were performed. RESULTS: The overall prevalence of primary headache of 60.7%, being that, in relation to the type, 33.2% presented tension-type headache, 54.3% migraine, and 12.3% other types of headache. Regression analysis showed that female gender and income of up to two minimum wages were associated with primary headache and migraine type. The primary headache was associated with subjects of the white race; watching television and playing video games for more than 3 hours per day, for example. The sitting posture, semi-lying down, and distance from the eyes to the mobile phone and tablet longer than 20 cm were associated with primary headache and the three types of headaches. CONCLUSION: The results allow us to conclude that there is a high prevalence of primary headaches in college students and that socioeconomic factors related to the use of electronic devices are associated with the presence of primary headaches.


INTRODUÇÃO: As dores de cabeça primárias, definidas como perturbações em si mesmas, causadas por patomecanismos independentes e não por outras perturbações, são prevalentes em universitários e considerada um importante problema de saúde mundial. OBJETIVO: Investigar a prevalência de cefaleia primária e analisar associações com características sociodemográficas e uso de dispositivos eletrônicos em estudantes universitários. MÉTODOS: Foi realizado um estudo observacional transversal com uma amostra de 1143 estudantes de ambos os sexos, que responderam ao questionário sobre aspectos demográficos, socioeconômicos, uso de dispositivos eletrônicos e cefaleia primária. Foram realizadas análises descritivas, análises bivariadas e regressão de Poisson. RESULTADOS: A prevalência geral de cefaleia primária de 60,7%, sendo que, em relação ao tipo, 33,2% apresentavam cefaleia tensional, 54,3% enxaqueca e 12,3% outros tipos de cefaleia. A análise de regressão mostrou que o sexo feminino e a renda de até dois salários-mínimos estavam associados à cefaleia primária e a enxaqueca; a cefaleia primária está associada a indivíduos da raça branca; assistir televisão e jogar videogame por mais de 3 horas por dia foi associado ao tipo tensional, a enxaqueca e cefaleia primária; a postura sentada, semideitada e distância dos olhos ao telefone celular e tablet com mais de 20 cm com a cefaleia primária e aos três tipos específicos. CONCLUSÃO: Os resultados permitem concluir que existe alta prevalência de cefaleia primária em estudantes universitários e que fatores socioeconômicos e relacionados ao uso de dispositivos eletrônicos estão associados à presença de cefaleia primária.


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Students , Universities , Risk Factors , Headache Disorders, Primary/epidemiology , Headache/epidemiology , Television , Microcomputers , Demography , Cross-Sectional Studies , Cell Phone
5.
Article in Chinese | WPRIM | ID: wpr-880443

ABSTRACT

Aiming at the low efficiency and low quality detection level of the manual infusion set, a gas detection system for infusion set based on STM32 single-chip microcomputer was designed. The detection system includes hardware system design and software system design. The hardware system is based on the STM32F103 single-chip microcomputer. It mainly designs the gas pressure sensor acquisition circuit and the multi-way solenoid valve control circuit. The software system uses a C ++ real-time operating system to ensure system monitoring's real-time performance and validity. Test data is transmitted to the upper computer and displayed via USB serial communication. The experiment proves that the infusion set gas detection system can perform gas detection on the infusion set. The system has the characteristics of stability and high accuracy. The relative error of the experimental measurement is within ±5%, and the detection efficiency is better than manual detection.


Subject(s)
Computers , Equipment Design , Microcomputers , Software
6.
Article in English | WPRIM | ID: wpr-764922

ABSTRACT

BACKGROUND: Volume models made from magnetic resonance images on computed tomographs can produce horizontal, coronal, sagittal, and oblique planes that are used widely in clinics, although detailed structures cannot be identified. Existing real color volume models are mostly commercial and their production methods have not been released. The aim of this study was to distribute free of charge, real-color volume models produced from sectioned images with the production method. METHODS: The original voxel size of sectioned images was increased appropriately so that the volume model could be handled by typical personal computers. By using Dicom Browser and MRIcroGL, the sectioned images were processed to become the volume models. RESULTS: On the MRIcroGL, the resultant volume model with the voxel size of 0.5 × 0.5 × 0.5 mm3 could be displayed and freely rotated. By adjusting variables of the software, desired oblique planes could be produced instantly. With overlay function, a model of segmented structure can be overlapped to the entire volume models. The sectioned images with high quality and the segmentation data of Visible Korean enabled the identification of detailed anatomical structures on the planes. CONCLUSION: The volume models can be used by medical students and doctors for learning sectional anatomy. Other researchers can utilize the method of this study to produce volume models from their own sectioned images.


Subject(s)
Anatomy, Cross-Sectional , Computer Simulation , Humans , Imaging, Three-Dimensional , Learning , Methods , Microcomputers , Students, Medical , Visible Human Projects
7.
Article in English | WPRIM | ID: wpr-728015

ABSTRACT

Manually reviewing electroencephalograms (EEGs) is labor-intensive and demands automated seizure detection systems. To construct an efficient and robust event detector for experimental seizures from continuous EEG monitoring, we combined spectral analysis and deep neural networks. A deep neural network was trained to discriminate periodograms of 5-sec EEG segments from annotated convulsive seizures and the pre- and post-EEG segments. To use the entire EEG for training, a second network was trained with non-seizure EEGs that were misclassified as seizures by the first network. By sequentially applying the dual deep neural networks and simple pre- and post-processing, our autodetector identified all seizure events in 4,272 h of test EEG traces, with only 6 false positive events, corresponding to 100% sensitivity and 98% positive predictive value. Moreover, with pre-processing to reduce the computational burden, scanning and classifying 8,977 h of training and test EEG datasets took only 2.28 h with a personal computer. These results demonstrate that combining a basic feature extractor with dual deep neural networks and rule-based pre- and post-processing can detect convulsive seizures with great accuracy and low computational burden, highlighting the feasibility of our automated seizure detection algorithm.


Subject(s)
Animals , Dataset , Electroencephalography , Epilepsy , Mice , Microcomputers , Seizures
8.
Article in English | WPRIM | ID: wpr-718781

ABSTRACT

OBJECTIVE: A tablet device has several medical applications because it's portability. Most importantly, its powerful graphics and touch-based features have several benefits in the surgical field, especially for generating three-dimensional (3D) images based on patients' computed tomography (CT) scans. METHODS: In this study, 3D objects were manipulated by an operator on an iPad during several laparoscopic surgeries of intra-abdominal organs. Before surgery, 3D structures, such as vessels, soft tissues, and bones, were reconstructed by the surgeon using the patients' CT scans on the patients' bed-side personal computer. RESULTS: In this study, 3D image-guided surgeries were performed using an iPad in five patients. The benefits of this technique were recorded and analyzed in detail by the surgeon. CONCLUSION: Although in a pilot phase with unresolved issues, direct intra-operative handling of a patient-tailored 3D model developed using a tablet device could be useful compared with conventional two-dimensional imaging.


Subject(s)
Humans , Laparoscopy , Microcomputers , Surgery, Computer-Assisted , Tomography, X-Ray Computed
9.
An. bras. dermatol ; 91(5,supl.1): 79-80, Sept.-Oct. 2016. graf
Article in English | LILACS | ID: biblio-837953

ABSTRACT

Abstract Erythema ab igne is a condition characterized by skin changes due to chronic exposure to moderate temperature. We describe a female patient with continuous use of a laptop computer on exposed legs for 6 months and consequent development of reticulated hyperpigmentation at the area. Histopathological examination revealed epidermal atrophy, collagen fragmentation, and vacuolar changes in the basal layer, among other signs. We consider this case to be a modern cause of erythema ab igne.


Subject(s)
Humans , Female , Middle Aged , Microcomputers , Hyperpigmentation/etiology , Hyperpigmentation/pathology , Erythema/etiology , Erythema/pathology , Hot Temperature/adverse effects , Epidermis/pathology
10.
Rev. saúde pública ; 50(supl.1): 7s, Feb. 2016. tab
Article in Portuguese | LILACS | ID: lil-774634

ABSTRACT

ABSTRACT OBJECTIVE To describe the length of exposure to screens and the prevalence of consumption of meals and snacks by Brazilian adolescents in front of screens. METHODS We evaluated 74,589 12 to 17-year old adolescents from 1,247 schools in 124 Brazilian municipalities. A self-administered questionnaire was used. Its segment regarding nutrition contained questions about using TV, computers, and video game systems, having meals while watching TV, and consuming snacks in front of screens. Consumption of meals and snacks in front of screens was analyzed according to the following variables: geographical region, gender, age range, type of school (public or private), and school shift. The prevalences and their respective 95% confidence intervals were estimated under a complex sampling design. RESULTS A great deal of the adolescents (73.5%, 95%CI 72.3-74.7) reported spending two or more hours a day in front of screens. That habit was more frequent among male adolescents, private school students, morning shift students, and students from Brazil’s South region. More than half of the adolescents (56.6%, 95%CI 55.4-57.8) reported almost always or always having meals in front of TV, and 39.6% (95%CI 38.8-40.5) of them said they consumed snacks in front of screens exactly as often. Both situations were the most prevalent ones among the girls, who attended public schools and were from Brazil’s Midwest region. CONCLUSIONS Length of exposure to screens and consumption of meals and snacks almost always or always in front of screens are high among Brazilian adolescents. It is necessary to develop strategies aiming to reduce the length of screen use, considering the media reality that children and adolescents have been experiencing from earlier and earlier ages. That context must therefore be analyzed in an indissociable way.


RESUMO OBJETIVO Descrever o tempo de exposição às telas e a prevalência de consumo de refeições e petiscos em frente a telas em adolescentes brasileiros. MÉTODOS Foram avaliados 74.589 adolescentes de 12 a 17 anos de 1.247 escolas em 124 municípios brasileiros. Foi utilizado questionário autopreenchível, cujo bloco sobre alimentação continha perguntas sobre o uso de TV, computador e videogames, realização de refeições assistindo TV e consumo de petiscos em frente a telas. O consumo de refeições e petiscos em frente a telas foi analisado segundo as variáveis: região geográfica, sexo, faixa etária, tipo de escola (pública ou particular) e turno de estudo. Foram estimadas prevalências e respectivos intervalos de confiança de 95%, considerando-se o desenho de amostra complexa. RESULTADOS Grande parte dos adolescentes (73,5%, IC95% 72,3-74,7) referiu passar duas ou mais horas por dia em frente às telas. Esse hábito foi mais frequente entre os adolescentes do sexo masculino, de escola particular, do turno da manhã e da região Sul do País. Mais da metade dos adolescentes (56,6%, IC95% 55,4-57,8) relatou realizar as refeições quase sempre ou sempre em frente à TV, e 39,6% (IC95% 38,8-40,5) consumiam petiscos em frente às telas com essa mesma frequência. Ambas as situações foram mais prevalentes entre as meninas, que estudavam na rede pública de ensino e da região Centro-Oeste. CONCLUSÕES O tempo de exposição às telas e o consumo de refeições e petiscos quase sempre ou sempre em frente a telas é elevado entre os adolescentes brasileiros. Faz-se necessário desenvolver estratégias que visem à redução do tempo de uso de telas, considerando a realidade midiática que crianças e adolescentes têm vivenciado de forma cada vez mais precoce, devendo-se, portanto, trabalhar esse contexto de forma indissociável.


Subject(s)
Humans , Male , Female , Adolescent , Attitude to Computers , Cell Phone/statistics & numerical data , Computers, Handheld/statistics & numerical data , Feeding Behavior , Microcomputers/statistics & numerical data , Snacks , Students/statistics & numerical data , Surveys and Questionnaires , Television/statistics & numerical data , Brazil , Cross-Sectional Studies , Residence Characteristics , Socioeconomic Factors , Video Games
11.
Article in English | WPRIM | ID: wpr-26777

ABSTRACT

PURPOSE: The objective of this study was to measure secondhand smoke (SHS) exposure in personal computer (PC) rooms with the purpose of determining the strength of scientific evidence supporting the legislative ban on smoking in PC rooms located in the Republic of Korea. MATERIALS AND METHODS: From June to September 2012, particulate matter (PM2.5) and air nicotine concentration (ANC) were measured in the smoking and non-smoking areas of PC rooms in Goyang City, Korea. In 28 randomly sampled PC rooms, field investigators completed an observational questionnaire on building characteristics, smoking policies, and evidence of smoking. The geometric means (GM) of PM2.5 and ANC in smoking and non-smoking areas were compared. RESULTS: Evidence of smoking was identified in both the smoking and non-smoking areas of all PC rooms. The GMs of PM2.5 and ANC in both areas were high and did not differ significantly (174.77 μg/m3 and 48.95 μg/m3 in smoking areas; 93.38 μg/m3 and 41.30 μg/m3 in non-smoking areas). Overall PM2.5 concentrations were 5.5-fold higher than those listed in the World Health Organization guidelines. CONCLUSION: This study supported previous reports that a partial smoking ban did not protect individuals from SHS exposure. Furthermore, the results from our study suggest how research can support policy. Countries in which smoke-free policies are not yet comprehensive may find our results useful.


Subject(s)
Humans , Korea , Microcomputers , Nicotine , Particulate Matter , Republic of Korea , Research Personnel , Smoke , Smoke-Free Policy , Smoking , Tobacco Smoke Pollution , World Health Organization
12.
Article in English | WPRIM | ID: wpr-26730

ABSTRACT

BACKGROUND: The primary outcome of sugammadex reversal for rocuronium-induced neuromuscular block (NMB) is a train-of-four ratio (TOFR) of 0.9, not first twitch (T1) height. We investigated whether the recovery of TOFR or T1 differs based on the reversal of NMB with neostigmine or sugammadex. METHODS: The acceleromyographic responses from 0.6 mg/kg of rocuronium were monitored supramaximally in 80 patients after induction of anesthesia. The TOFR and T1 height were recorded, and saved in a personal computer using TOF-Watch SX Monitor software in all patients. Patients were randomly assigned to 2 groups to receive either neostigmine 50 µg/kg with glycopyrrolate 10 µg/kg (neostigmine group, n = 40) or sugammadex 2.0 mg/kg (sugammadex group, n = 40). The primary objective was to determine the difference of recovery time between TOFR to 0.9 and T1 to 0.9 after sugammadex or neostigmine administration during moderate rocuronium-induced NMB. RESULTS: The recovery pattern of the TOFR 2 min after sugammadex administration was 1.0 or more, but that of T1 was less than 90% (T1 / control value) up to 6 min after drug was injected. The recovery pattern of TOFR and T1 was similar during the 20 min after reversal with neostigmine. CONCLUSIONS: If you have not performed the T1 monitoring, both TOFR and T1 should be considered to confirm suitable recovery during the 6 min after reversal with sugammadex during rocuronium-induced moderate NMB.


Subject(s)
Anesthesia , Depression , Glycopyrrolate , Humans , Microcomputers , Neostigmine , Neuromuscular Blockade , Neuromuscular Monitoring
13.
J. pediatr. (Rio J.) ; 91(4): 339-345, July-Aug. 2015. tab
Article in English | LILACS | ID: lil-759344

ABSTRACT

OBJECTIVE: The purpose of this study was twofold: to analyze the association between physical fitness and academic attainment, and to determine the influence of screen time on the association between physical fitness and academic attainment.METHODS: A cross-sectional study including 395 schoolchildren from seven schools of the Maule Region, Chile (mean age 12.1 years; 50.4% boys) participated in the autumn of 2014 (March to June). Self-reported physical activity and screen time were evaluated. The study measured academic achievement (mean of the grades obtained in several core subjects), physical fitness (cardiorespiratory fitness and muscular strength), weight, height, parental education, and socioeconomic status. Linear regression analysis was used to analyze the relationships between physical fitness and academic attainment after adjusting for potential confounders by gender. Analysis of variance was used to analyze the differences in academic attainment according to fitness and screen time categories (< 2 hours/day and ≥ 2 hours/day).RESULTS: In both genders good cardiorespiratory fitness levels were associated with high language (ß = 0.272-0.153) and mean academic attainment (ß = 0.192-0.156) grades; however, after adjusting for screen time and other potential confounders, these associations disappear. Similarly, no relationship was observed after analyzing those children who spend more hours of screen time (≥ 2 hours/day).CONCLUSIONS: Academic attainment is associated with higher cardiorespiratory fitness levels; however, it was weakly impaired by screen time. These findings seem to suggest that parents and policymakers should minimize the negative effects of screen time on children's lives to maximize the beneficial effect of healthy habits on academic attainment.


OBJETIVO: Analisar a relação entre a forma física e o sucesso acadêmico e determinar a influência do tempo de tela sobre a relação entre a forma física e o sucesso acadêmico.MÉTODO: Estudo transversal que incluiu 395 crianças em idade escolar de sete escolas da região de Maule, Chile (com idade média de 12,1 anos; 50,4% de meninos), foi feito no outono de 2014 (março a junho). A atividade física e o tempo de tela autorrelatados foram avaliados. Mensuramos o desempenho escolar (média das notas obtidas em diversas matérias principais), a forma física (aptidão cardiorrespiratória e força muscular), o peso, a estatura, a escolaridade dos pais e a condição socioeconômica. A análise de regressão linear foi usada para avaliar as relações entre a forma física e o sucesso acadêmico após o ajuste pelas possíveis variáveis de confusão por sexo. A análise de variância foi usada para avaliar as diferenças no sucesso escolar de acordo com as categorias de forma física e tempo de tela (< 2 horas/dia e ≥ 2 horas/dia).RESULTADOS: Em ambos os sexos, os bons níveis de aptidão cardiorrespiratória foram associados às maiores notas em línguas (ß = 0,272-0,153) e à média de sucesso acadêmico (ß = 0,192-0,156); contudo, após ajustar o tempo de tela e outras possíveis variáveis de confusão, essas associações desaparecem. Da mesma forma, não foi observada relação após analisar as crianças com mais horas de tempo de tela (≥ 2 horas/dia).CONCLUSÕES: O sucesso acadêmico está associado a maiores níveis de aptidão cardiorrespiratória; contudo, foi pouco prejudicado pelo tempo de tela. Esses achados parecem sugerir que os pais e órgãos reguladores devem minimizar os efeitos negativos do tempo de tela sobre as vidas das crianças para maximizar o efeito benéfico de hábitos saudáveis sobre o sucesso acadêmico.


Subject(s)
Child , Female , Humans , Male , Achievement , Educational Measurement , Microcomputers , Physical Fitness/physiology , Television , Video Games/adverse effects , Body Mass Index , Chile , Cross-Sectional Studies , Linear Models , Motor Activity/physiology , Muscle Strength/physiology , Sedentary Behavior , Sex Factors , Surveys and Questionnaires , Time Factors
15.
Psicol. soc. (Online) ; 27(1): 24-34, Jan-Apr/2015.
Article in Portuguese | LILACS | ID: lil-736099

ABSTRACT

Este artigo procura apresentar os conceitos de agenciamento e phylum maquínico, concebidos por Gilles Deleuze e Felix Guattari, para sublinhar o silício dentro do agenciamento contemporâneo homem-natureza. O silício (Si), matéria de destaque da microeletrônica, torna-se matéria expressiva de uma ética e de uma estética próprias. Com o objetivo de cartografar as forças que se colocam em ação em alguns agenciamentos homem-silício, busca criar uma imagem-pensamento tributária de uma estética do silício, que exprime um modo de existência. Neste trajeto, estão cartografadas algumas linhas de sustentação de uma sociedade de controle e outras linhas que agem em ruptura com a mesma. Com a arte, na idade da informatização planetária, vislumbram-se linhas orientadas a uma nova processualidade criativa e singularizante, capazes de promover mudanças nos posicionamentos do homem por uma vida portadora de certos valores estéticos...


Este artículo presenta los conceptos de agenciamiento y phylum maquínico, concebidos por Gilles Deleuze y Felix Guattari, para subrayar el silicio dentro del agenciamiento contemporáneo hombre-naturaleza. El silicio (Si), resalte el campo de la microelectrónica, se convierte en materia expresiva de una ética y de una estética propias. Con el propósito de cartografiar las fuerzas que se ponen a la acción en algunos agenciamientos hombre-silicio, busca crear una imagen-pensamiento tributaria de una estética del silicio, que expresa un modo de existencia. En este camino, se asignan algunas líneas de sostentación de una sociedad de control y otras líneas que actúan en ruptura de la misma. Con el arte, a la edad de informatización planetaria, se vislumbran líneas orientadas a una nueva procesualidad creativa y singularizante, capaces de promover cambios en los posicionamientos del hombre por una vida portadora de ciertos valores estéticos...


In this article we introduce the concepts of arrangement and machinic phylum, created by Gilles Deleuze and Felix Guattari, to underline the silicon inside the contemporary arrangement Man-Nature. Silicon (Si), the highlight of microelectronics, becomes expressive subject of an ethics and an aesthetic. In order to map the forces in action in some arrangements Man-Silicon, we seek to create a thought-image of a silicon aesthetic, which expresses a mode of existence. In this way, we map a few support lines of a control society and others which act in breach with that. With art, at the age of planetary computerization, we find lines oriented to a new creative and singularity process, able to promote changes in man's positions, toward to another mode of existence carried with some aesthetic values...


Subject(s)
Humans , Esthetics , Psychology, Social , Science, Technology and Society , Silicon/history , Social Behavior/history , Microcomputers , Optical Devices
16.
Article in Chinese | WPRIM | ID: wpr-265604

ABSTRACT

<p><b>OBJECTIVE</b>To improve the radio frequency (RF) transmission distance of the wireless terminal of the medical internet of things (LOT), to realize the real-time and efficient data communication, the intelligent relay system based on STM32F103 single chip microcomputer (SCM) is proposed.</p><p><b>METHODS</b>The system used nRF905 chip to achieve the collection, of medical and health information of patients in the 433 MHz band, used SCM to control the serial port to Wi-Fi module to transmit information from 433 MHz to 2.4 GHz wireless Wi-Fi band, and used table look-up algorithm of ready list to improve the efficiency of data communications.</p><p><b>RESULTS</b>The design can realize real-time and efficient data communication.</p><p><b>CONCLUSION</b>The relay which is easy to use with high practical value can extend the distance and mode of data transmission and achieve real-time transmission of data.</p>


Subject(s)
Algorithms , Communication , Humans , Internet , Medical Informatics , Microcomputers , Radio Waves , Wireless Technology
17.
Article in Chinese | WPRIM | ID: wpr-302582

ABSTRACT

<p><b>OBJECTIVE</b>To describe the prevalence and relationship between screen time and sub-health status among middle school students in weekdays and weekends.</p><p><b>METHODS</b>With multistage stratified random cluster sampling, 14 400 students from junior and senior middle schools in 288 classes of 30 schools in 4 cities( Shenyang, Chongqing, Xinxiang, Guangzhou) were investigated in October, 2011. A total of 13 817 valid questionnaires were retained for analysis. Survey content includes general demographic information, screen time, sub-health state. Logistic regression model was used to analyze the relationship between screen time and sub-health status.</p><p><b>RESULTS</b>The screen time among middle school students > 2 h/d on weekdays and weekends were 15.1% (2 085/13 817) and 58.5% (8 077/13 817) , respectively. Among them, the boys' screen time > 2 h/d on weekdays and weekends were 17.9% (1 187/6 644) and 61.3% (4 070/6 644), which were higher than girls (12.5% (898/7 173), 55.9% (4 007/7 173) )(χ² values were 76.95 and 41.35, respectively. P < 0.01). The prevalence of physical sub-health status, psychological sub-health status and sub-health status were 24.8% (3 431/13 817), 21.7% (2 997/13 817) and 22.1% (3 051/13 817), respectively. Among them, the girls' prevalence of physical sub-health status, psychological sub-health status and sub-health status were 26.0% (1 863/7 173), 22.9% (1642/7 173) and 23.1% (1 658/7 173) ), respectively, which were higher than boys' (23.6% (1 568/6 644), 20.4% (1 355/6 644) and 21.0% (1 393/6 644)) (χ² values were 10.39, 12.66 and 9.25, respectively. P < 0.05). The senior students' prevalence of physical sub-health status, psychological sub-health status and sub-health status were 31.6% (2 176/6 884) , 28.3% (1 946/6 884) and 28.9% (1 990/6 884), respectively, which were higher than junior students' (18.1% (1 255/6 933), 15.2% (1 051/6 933) and 15.3% (1 061/6 933)) (χ² values were 337.65, 349.46 and 371.54, respectively, P < 0.05). After adjusting on demographic characteristics, compared with screen time ≤ 2 h/d on weekday, screen time > 2 h/d on weekday was significantly associated with physical sub-health status, psychological sub-health status and sub-health status (OR (95% CI): 1.39 (1.25-1.55), 1.62 (1.45-1.81) and 1.59 (1.43-1.78)). And compared with screen time ≤ 2 h/d on weekend, screen time > 2 h/d on weekend was also significantly associated with physical sub-health status, psychological sub-health status and sub-health status (OR(95% CI):1.49 (1.37-1.61), 1.81 (1.66-1.98), and 1.71 (1.57-1.87)).</p><p><b>CONCLUSION</b>The rate of the screen time > 2 h/d and the detection ratio of sub-health among the middle school students in Shenyang, Chongqing, Xinxiang, Guangzhou in 2011 were high. Screen time >2 h/d on weekdays or weekends was a risk factor for sub-health status.</p>


Subject(s)
Adolescent , China , Epidemiology , Cities , Data Collection , Female , Health Status , Humans , Logistic Models , Male , Microcomputers , Prevalence , Risk Factors , Schools , Sex Factors , Students , Surveys and Questionnaires , Television , Urban Population
18.
Article in English | WPRIM | ID: wpr-149995

ABSTRACT

PURPOSE: Silk fibroin (SF) is a new degradable barrier membrane for guided bone regeneration (GBR) that can reduce the risk of pathogen transmission and the high costs associated with the use of collagen membranes. This study compared the efficacy of SF membranes on GBR with collagen membranes (Bio-Gide(R)) using a rat calvarial defect model. MATERIALS AND METHODS: Thirty-six male Sprague Dawley rats with two 5 mm-sized circular defects in the calvarial bone were prepared (n=72). The study groups were divided into a control group (no membrane) and two experimental groups (SF membrane and Bio-Gide(R)). Each group of 24 samples was subdivided at 2, 4, and 8 weeks after implantation. New bone formation was evaluated using microcomputerized tomography and histological examination. RESULTS: Bone regeneration was observed in the SF and Bio-Gide(R)-treated groups to a greater extent than in the control group (mean volume of new bone was 5.49 +/- 1.48 mm3 at 8 weeks). There were different patterns of bone regeneration between the SF membrane and the Bio-Gide(R) samples. However, the absolute volume of new bone in the SF membrane-treated group was not significantly different from that in the collagen membrane-treated group at 8 weeks (8.75 +/- 0.80 vs. 8.47 +/- 0.75 mm3, respectively, P=.592). CONCLUSION: SF membranes successfully enhanced comparable volumes of bone regeneration in calvarial bone defects compared with collagen membranes. Considering the lower cost and lesser risk of infectious transmission from animal tissue, SF membranes are a viable alternative to collagen membranes for GBR.


Subject(s)
Animals , Bone Regeneration , Collagen , Dental Implants , Disease Transmission, Infectious , Fibroins , Guided Tissue Regeneration , Humans , Male , Membranes , Microcomputers , Osteogenesis , Rats , Rats, Sprague-Dawley , Silk
19.
Article in Chinese | WPRIM | ID: wpr-290716

ABSTRACT

Aiming at the single treatment and the design separation between treatment and assessment in electrotherapy equipment, a kind of system including low-intermediate frequency treatment and efficacy evaluation was developed. With C8051F020 single-chip microcomputer as the core and the circuit design and software programming used, the system realized the random switch of therapeutic parameters, the collection, display and data storage of pressure pain threshold in the assessment. Experiment results showed that the stimulus waveform, current intensity, frequency, duty ratio of the system output were adjustable, accurate and reliable. The obtained pressure pain threshold had a higher accuracy (< 0.3 N) and better stability, guiding the parameter choice in the precise electrical stimulation. It, therefore, provides a reliable technical support for the treatment and curative effect assessment.


Subject(s)
Electric Stimulation Therapy , Equipment Design , Microcomputers , Pain Measurement , Software
20.
Article in Chinese | WPRIM | ID: wpr-259926

ABSTRACT

In order to meet the requirements of the multi-physiological signal measurement of the 3D-TV health assessment, try to find the suitable biological acquisition chips and design the hardware system which can detect different physiological signals in real time. The systems mainly uses ARM11/S3C6410 microcontroller to control the EEG/EOG acquisition chip RHA2116 and the ECG acquisition chip ADS1298, and then the microcontroller transfer the data collected by the chips to the PC software by the USB port which can display and save the experimental data in real time, then use the Matlab software for further processing of the data, finally make a final health assessment. In the meantime, for the different varieties in the different brain regions of watching 3D-TV, developed the special brain electrode placement and the experimental data processing methods, then effectively disposed the multi-signal data in the multilevel.


Subject(s)
Computer Simulation , Equipment Design , Microcomputers , Physiological Phenomena , Signal Processing, Computer-Assisted , Software
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