Bibliographies thématiques / PAPER SENSORS

Littérature scientifique sur le sujet « PAPER SENSORS »

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Publié le 19 janvier 2024

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Articles de revues sur le sujet "PAPER SENSORS"

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Immanuel, Phillip Nathaniel, Song-Jeng Huang, Yudhistira Adityawardhana et Yi-Kuang Yen. « A Review of Paper-Based Sensors for Gas, Ion, and Biological Detection ». Coatings 13, no 8 (28 juillet 2023) : 1326. http://dx.doi.org/10.3390/coatings13081326.

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Gas, ion, and biological sensors have been widely utilized to detect analytes of great significance to the environment, food, and health. Paper-based sensors, which can be constructed on a low-cost paper substrate through a simple and cost-effective fabrication process, have attracted much interests for development. Moreover, many materials can be employed in designing sensors, such as metal oxides and/or inorganic materials, carbon-based nanomaterials, conductive polymers, and composite materials. Most of these provide a large surface area and pitted structure, along with extraordinary electrical and thermal conductivities, which are capable of improving sensor performance regarding sensitivity and limit of detection. In this review, we surveyed recent advances in different types of paper-based gas, ion, and biological sensors, focusing on how these materials’ physical and chemical properties influence the sensor’s response. Challenges and future perspectives for paper-based sensors are also discussed below.
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Guo, Yixuan, et Gaoyang Liang. « Perceptual Feedback Mechanism Sensor Technology in e-Commerce IoT Application Research ». Journal of Sensors 2021 (28 septembre 2021) : 1–12. http://dx.doi.org/10.1155/2021/3840103.

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With the development of sensor technology and the Internet of Things (IoT) technology, the trend of miniaturization of sensors has prompted the inclusion of more sensors in IoT, and the perceptual feedback mechanism among these sensors has become particularly important, thus promoting the development of multiple sensor data fusion technologies. This paper deeply analyzes and summarizes the characteristics of sensory data and the new problems faced by the processing of sensory data under the new trend of IoT, deeply studies the acquisition, storage, and query of sensory data from the sensors of IoT in e-commerce, and proposes a ubiquitous storage method for massive sensory data by combining the sensory feedback mechanism of sensors, which makes full use of the storage resources of IoT storage network elements and maximally meets the massive. In this paper, we propose a ubiquitous storage method for massive sensing data, which makes full use of the storage resources of IoT storage network elements to maximize the storage requirements of massive sensing data and achieve load-balanced data storage. In this paper, starting from the overall development of IoT in recent years, the weak link of intelligent information processing is reinforced based on the sensory feedback mechanism of sensor technology.
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Movafaghi, Sanli, Matthew D. Cackovic, Wei Wang, Hamed Vahabi, Anudeep Pendurthi, Charles S. Henry et Arun K. Kota. « Superomniphobic Papers for On‐Paper pH Sensors ». Advanced Materials Interfaces 6, no 13 (14 mai 2019) : 1900232. http://dx.doi.org/10.1002/admi.201900232.

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Suranthiran, Sugathevan, et Suhada Jayasuriya. « Signal Conditioning With Memory-Less Nonlinear Sensors ». Journal of Dynamic Systems, Measurement, and Control 126, no 2 (1 juin 2004) : 284–93. http://dx.doi.org/10.1115/1.1766030.

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Proposed in this paper is an off-line signal conditioning scheme for memoryless nonlinear sensors. In most sensor designs, a linear input-output response is desired. However, nonlinearity is present in one form or another in almost all real sensors and therefore it is very difficult if not impossible to achieve a truly linear relationship. Often sensor nonlinearity is considered a disadvantage in sensory systems because it introduces distortion into the system. Due to the lack of efficient techniques to deal with the issues of sensor nonlinearity, primarily nonlinear sensors tend to be ignored. In this paper, it is shown that there are certain advantages of using nonlinear sensors and nonlinear distortion caused by sensor nonlinearity may be effectively compensated. A recursive algorithm utilizing certain characteristics of nonlinear sensor functions is proposed for the compensation of nonlinear distortion and sensor noise removal. A signal recovery algorithm that implements this idea is developed. Not having an accurate sensor model will result in errors and it is shown that the error can be minimized with a proper choice of a convergence accelerator whereby stability of the developed algorithm is established.
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Shimojima, Koji, Toshio Fukuda, Fumihito Arai et Hideo Matsuura. « Multi-Sensor Integration System utilizing Fuzzy Inference and Neural Network ». Journal of Robotics and Mechatronics 4, no 5 (20 octobre 1992) : 416–21. http://dx.doi.org/10.20965/jrm.1992.p0416.

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Sensors are important for recognizing the system state environmental status in the intelligent robotic system. Thus, the sensor integration system (SIS) has been studied in a wide range of applications. In this paper, it is shown that the SIS can expand the measurable region of sensors with higher accuracy by multiple sensors and that operators can use the system as easily as a single high-performance sensor system. Systems which have been reported so far do not have flexibility for changing/replacing sensors. Thus, this paper presents an approach to the SIS with the knowledge data base of sensors, so the proposed SIS has the flexibility for changing/replacing sensors. This system consists of four subsystems: 1) sensors as hardware sensing devices, 2) knowledge data base of sensors (KBS), 3) fuzzy inference, and 4) neural network(NN). This system can estimate the error for the sensor’s measured value by fuzzy inference with KBS. The measured values are integrated by NN. The inferred error and measured value are put into NN. Then, NN’s output gives the integrated value of multiple sensors. The proposed system is shown to be effective through extensive experiments.
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Zhang, Chang Jie, et Yu Liu. « A Sensor Grouping Method for Industrial Sensor Health Management ». Applied Mechanics and Materials 621 (août 2014) : 271–76. http://dx.doi.org/10.4028/www.scientific.net/amm.621.271.

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As many sensor networks have been deployed in industry monitoring area, the focus on sensor data quality has also increased. Sensor networks provide us with process details which we can utilize to help making decisions on process monitoring.In order to make meaningful decisions, the quality of the data produced by sensors must be validated. As we evaluate the status of a specific sensor, we may also regard the status of the related sensors. If a sensor’s data show some abnormal, but the sensors related to it didn’t, we may have much more confidence to believe that the sensor is malfunction. In our early study, the sensors grouping strategy is manual. In this paper, we proposed a sensor grouping algorithm, which combines both PCA decouple method and the K-means cluster method. Finally, a test has been made with real data from an oilfield.
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HUGHES, KEN, et N. RANGANATHAN. « MODELING SENSOR CONFIDENCE FOR SENSOR INTEGRATION TASKS ». International Journal of Pattern Recognition and Artificial Intelligence 08, no 06 (décembre 1994) : 1301–18. http://dx.doi.org/10.1142/s0218001494000656.

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This paper addresses the problem of determining the reliability of individual sensors in a multi-sensor robotic system in an unknown environment. The inherent difficulty in this problem is that the decision must be based solely upon the data from the sensors themselves. While some previous research has considered unstructured environments (see Refs. 1 and 2 for examples) little if any consideration has been given to totally unknown environments. This problem has usually been avoided by assuming that the sensors would not provide erroneous data or ignoring sensors when they appeared to provide erroneous data. We believe a more robust solution is to consider each sensor’s performance over time compared to other sensors, and from this determine a measure of confidence in each sensor. This allows sensors which temporarily provide erroneous data to be accommodated. A system which can determine the reliability of its sensors is more robust since it can wisely decide which sensors are most appropriate for a given task and can also determine whether sensor conflicts are the result of poorly performing sensors.
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Chen, Cong, Lulu Tian, Wen Li, Kun Wang, Qijing Yang, Jinying Lin, Tianshou Zhang, Biao Dong et Lin Wang. « Recent Advances and Perspectives Regarding Paper-Based Sensors for Salivary Biomarker Detection ». Chemosensors 11, no 7 (7 juillet 2023) : 383. http://dx.doi.org/10.3390/chemosensors11070383.

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Paper-based sensors overcome the drawbacks of conventional sensors in terms of their flexibility, portability, and stability compared to conventional sensors. Moreover, as a noninvasive bodily fluid, saliva contains various biomarkers related to physical status, which makes it perfectly matched with to use of paper-based sensors to manufacture a convenient and inexpensive disposable sensing device. This review focuses on the recent advances and progress in the design of paper-based salivary sensors and their applications. The first part mainly discusses various paper-based sensors and their advanced compositions, including dipstick assay, lateral flow assay, and microfluidic analytical device. Different detection methods in salivary biomarker detection are specially introduced in the secondary section, then their multiple potential applications and prospects are summarized. The sensor has excellent advantages for saliva detection, provides a reliable platform for point-of-care tests and telemedicine, and epically promotes the development of the medical Internet of Things.
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Tay, Li-Lin, Shawn Poirier, Ali Ghaemi et John Hulse. « Inkjet-printed paper-based surface enhanced Raman scattering (SERS) sensors for the detection of narcotics ». MRS Advances 7, no 9 (7 mars 2022) : 190–96. http://dx.doi.org/10.1557/s43580-022-00257-8.

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AbstractRecent advances in inkjet-printing of advanced materials have provided a versatile platform for the rapid development and prototyping of sensor devices. We have recently demonstrated inkjet-printed surface enhanced Raman scattering (SERS) sensors on flexible substrates for the detection of variety of small molecules [Tay et al. in Front Chem 9:680556 (2021); Tay et al. in J Raman Spectrosc 52:563 (2020)]. These flexible SERS sensors have many advantages for performing point-of-sampling testing, among them liquid or aerosol filtration and swabbing capabilities. These simple sampling and separation features make these inkjet-printed paper-based sensors ideal for field applications. SERS detection of molecules with poor binding affinity towards the plasmonic surfaces of the sensors tends to be inefficient. A surface functionalization approach has been applied to SERS sensors to improve the molecule affinity and hence their detection sensitivity. In this paper, we investigate the optimization of SERS sensor fabrication to achieve optimal performance. Three performance criteria: diffuse reflectance, SERS background intensity from the as-printed blank sensors and SERS performance of sensors exposed to the benzenethiol reporter molecule, are characterized carefully to derive the optimal inkjet-printing conditions for producing the best performing SERS sensors. Additionally, we demonstrate the use of a simple potassium iodide functionalization scheme to improve the detection sensitivity for narcotics such as fentanyl by two orders of magnitude. Graphical abstract
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Elangkovan, Shuthish, Mastura Shafinaz Zainal Abidin, Shaharin Fadzli Abd Rahman, Mohammad Shafiq Che Soh et Ahmad Bukhairi Md Rashid. « Economical fabrication of graphite/paper-based humidity sensor ». Indonesian Journal of Electrical Engineering and Computer Science 20, no 1 (1 octobre 2020) : 54. http://dx.doi.org/10.11591/ijeecs.v20.i1.pp54-59.

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<p>Paper is regarded as a promising alternative for low-cost and biodegradable substrate. Paper can be a very good humidity detecting substrate due to its capability to absorb water vapour, thanks to its porous surface. This work explores the feasibility of developing a paper-based humidity sensor using simple and low cost fabrication process. Two type of electrode structures, namely interdigitated and parallel electrode, were formed by using two different pencil grade. The pencil grades used were 2B and 6B. The current-voltage (I-V) characteristics of the fabricated device were measured under different relative humidity and its humidity sensing operation was analyzed. It was observed that the sensor with the 6B and parallel electrode configuration was the most responsive to humidity changes while the 6B interdigitated sensor was the second best. The sensors fabricated with the 6B electrodes are better at sensing humidity changes compared to the sensors fabricated using 2B electrodes.</p>
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Thèses sur le sujet "PAPER SENSORS"

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Novell, Recasens Marta. « Paper-based potentiometric platforms for decentralised chemical analysis ». Doctoral thesis, Universitat Rovira i Virgili, 2015. http://hdl.handle.net/10803/313994.

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En les darreres dècades, el món ha experimentat profunds canvis socials i tecnològics. Entre aquests, són destacables les tendències emergents d’anàlisis descentralitzats i de xarxes de sensors, que estan tenint un gran impacte en moltes àrees, especialment en el sistema sanitari. El desenvolupament d’eines per a realitzar anàlisis fora del laboratori de forma robusta, simple i econòmica, serà de gran ajuda per generar, per exemple, eines de diagnòstic assequibles. Per complementar aquestes tendències, aquesta tesis presenta el desenvolupament d’una eina analítica nova per anàlisis descentralitzats, usant paper modificat amb nanotubs de carboni com a substrat i la potenciometria com a tècnica de detecció. Els nanotubs de carboni s’han incorporat amb èxit sobre un paper de filtre convencional, convertint-lo així en conductor, i proporciona’t-li habilitat transductora ió-electró. Amb aquesta plataforma s’han desenvolupat elèctrodes selectius de ions per a diferents ions –mantenint el mateix rendiment analític que els elèctrodes convencionals- així com també un elèctrode de referència. La demostració de que aquesta plataforma pot solucionar un problema analític s’ha dut a terme a través del desenvolupament d’una cel·la potenciomètrica complerta de paper per a la detecció de liti en sang. Aquests elèctrodes també han estat combinats amb èxit amb un potenciòmetre d’identificació per radiofreqüència (RFID), cosa que permet el seu ús de forma descentralitzada. Altres aplicacions possibles, juntament amb les limitacions del sistema es discuteixen en detall. En definitiva, aquest treball obre la possibilitat de substituir sensors convencionals per aquesta plataforma més econòmica, obrint així tota una nova gama d’oportunitats.
En las últimas décadas, el mundo ha experimentado profundos cambios sociales y tecnológicos. Entre los cuáles son destacables las tendencias emergentes de análisis descentralizados y de redes de sensores, que tienen un gran impacto en muchas áreas, especialmente en el sistema sanitario. El desarrollo de herramientas para realizar análisis fuera del laboratorio de forma robusta, simple i económica, será de gran ayuda per generar, para generar, herramientas de diagnóstico asequibles. Para complementar estas tendencias, esta tesis presenta el desarrollo de una herramienta analítica nueva para análisis descentralizados, usando papel modificado con nanotubos de carbono como sustrato y la potenciometría como técnica de detección. Los nanotubos de carbono se han incorporado con éxito sobre un papel de filtro convencional, convirtiéndolo así en conductor, y proporcionándole habilidad transductora ion-electrón. Con esta plataforma se han desarrollado electrodos selectivos de iones para distintos iones manteniendo el mismo rendimiento analítico que los electrodos convencionales- así como también un electrodo de referencia. La demostración de que esta plataforma puede solucionar un problema analítico se ha hecho a través del desarrollo de una celda potenciométrica completa de papel para la detección de liti en sangre. Estos electrodos también se han combinado con éxito con un potenciómetro de identificación por radiofrecuencia (RFID), cosa que permite su uso de forma descentralizada. Otras aplicaciones posibles, junto con las limitaciones sistema se discuten en detalle. En definitiva, este trabajo abre la posibilidad de substituir los sensores convencionales por esta plataforma más económica, abriendo así tota una nueva gama de oportunidades.
During the last decades, the world has undergone deep social and technological changes. Remarkably are the emerging trends of decentralised analysis and sensing networks, which are having a deep impact in many areas, especially in the healthcare system. The development of tools for performing measurements out of the lab in a robust, simple and cost-effective way will be of great help to generate, for example, affordable diagnostic tools. To complement this trends, this thesis presents the development of a novel analytical tool for decentralised measurements, by using paper as a substrate modified with carbon nanotubes (CNT), and potentiometry as detection approach. CNTs have been successfully incorporated over a conventional filter paper making it conductive, and giving to it ion-to-electron transduction capability. Over this platform ion-selective electrodes for different ions have been developed –keeping the same analytical performance as conventional electrodes- as well as a reference electrode. The demonstration that this platform can solve an analytical problem has been proved through the development of a complete paper cell for the detection of lithium in blood. This electrodes have been also combined with a radio frequency identification (RFID) potentiometer, which will allows its use in a decentralised way. Other possible application of this platform together with its limitations are also discussed. All in all, this work opens the possibility to substitute conventional sensors for this low-cost paper sensors, thus unlocking a whole new range of possibilities.
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Jain, Ishan. « Paper-Based Sensors for Contaminant Detection Using Surface Enhanced Raman Spectroscopy ». Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/53946.

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Surface enhanced Raman spectroscopy (SERS) is highly promising analytical technique for trace detection of analytes. It is particularly well suited for environmental analyses due to its high sensitivity, specificity, ease of operation and rapidity. The detection and characterization of environmental contaminants, using SERS is highly related to the uniformity, activity and reproducibility of the SERS substrate. In this thesis, SERS substrates were produced by gold nanoparticle formation on wax patterned chromatography paper. In situ reduction of hydrogen tetrachloroaurate (gold precursor) by trisodium citrate dihydrate (reducing agent) was used to produce gold nanoparticles within a paper matrix. These gold nanoparticle based SERS substrates were analyzed by FE-SEM, UV-Vis and Raman spectroscopy. This work discusses the SERS signal enhancements for Raman active MGITC dye for a series of substrates prepared by in situ reduction of gold salt and pre-produced gold nanoparticles. UV-Vis analysis was performed to understand the effect of different molar ratio (reducing agent to gold precursor) and reaction time on the size and shape of the localized surface plasmon resonance (LSPR) band that dictates the SERS enhancements. It was concluded that lower molar ratio (1:1 and 2:1) of citrate-to gold produced better SERS signal enhancements and broader LSPR band. Therefore, use of lower molar ratio (MR) was recommended for paper-based substrates using in situ-based reduction approach.
Master of Science
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Araujo, William Reis de. « Desenvolvimento de sensores eletroquímicos e colorimétricos para aplicações em amostras de interesse forense ». Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-18082016-084906/.

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Esta tese apresenta os estudos e esforços visando ao desenvolvimento de sensores químicos para aplicações diversas na área forense. Foram desenvolvidos métodos eletroanalíticos para detecção e quantificação de alguns compostos comumente encontrados na adulteração de amostras de drogas de abuso (procaína, fenacetina, aminopirina, paracetamol, levamisol), além da cocaína e estudos fundamentais sobre o comportamento eletroquímico desses compostos. Empregaram-se também métodos eletroquímicos para quantificação de compostos tóxicos e perigosos como explosivos (ácido pícrico) e melamina por exemplo. Os trabalhos utilizando sensores eletroquímicos contemplam modificações eletroquímicas das superfícies eletródicas, utilização de sensores com polímeros molecularmentes impressos (MIP) e eletrodos descartáveis em papel utilizando diferentes técnicas voltamétricas e amperométricas, eletrodo disco rotatório (EDR) e microbalança de cristal de quartzo. Além da fabricação de dispositivos analíticos descartáveis em papel empregando detecção eletroquímica utilizou-se também a detecção colorimétrica para quantificação de alguns dos principais adulterantes de amostras de apreensão de cocaína, como procaína e fenacetina, bem como análises e discriminações de compostos explosivos (peroxi e nitro compostos) nessas plataformas portáteis e de baixo custo. Os métodos foram sempre desenvolvidos visando característicos como: facilidade, praticidade, baixo custo e portabilidade para análises diretamente no local de medida com mínima infraestrutura laboratorial. Por fim, são apresentados alguns estudos realizados durante estágio de pesquisa no exterior (Universidade da Califórnia - San Diego (UCSD)) na área de Wearable Sensors, em que foram desenvolvidos métodos para análises de micronutrientes no suor (zinco) e um metabólito (ácido úrico) na saliva usando sensores aplicados diretamente no corpo humano.
This thesis shows studies and efforts to the development of chemical sensors for different applications in the forensic field. Electroanalytical methods were developed for detection and quantification of some compounds (procaine, phenacetin, aminopyrine, acetaminophen, levamisole) commonly found in the drug of abuse adulteration process and cocaine, as well as, fundamental studies about the electrochemical behavior of these compounds. It was also employed electrochemical methods for quantification of hazardous compounds such as explosives (picric acid) and melamine. Analytical methods with electrochemical sensors included electrochemical modification of electrodic surfaces, molecularly imprinted polymers (MIP), and paper disposable electrochemical devices using different voltammetric and amperometric techniques, rotating disc electrode (RDE) and quartz crystal microbalance. In addition to the fabrication of paper disposable analytical devices with electrochemical detection, it was also used the colorimetric detection to quantify some of the major adulterants in cocaine seizure samples, such as procaine and phenacetin, as well as analysis and discrimination of explosive compounds (peroxy and nitro explosives) in these low cost portable platforms. All proposed methods were always developed aming at theses characteristics: ease, convenience, low cost and portability for analysis directly at the measurement site with minimal laboratory infrastructure. Finally, we presented some studies conducted during research internship abroad (University of California - San Diego (UCSD)) in the area of Wearable Sensors, which have been developed methods for micronutrient analysis in sweat (Zn) and a metabolite (Uric Acid) in saliva using sensors applied directly to the human body
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Schoberg, Paul, Harry Beatty et Robert A. McKinley. « ITC TENA-Enabled Range Roadmap Paper ». International Foundation for Telemetering, 2012. http://hdl.handle.net/10150/581847.

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This paper discusses the Department of Defense (DoD) direction to provide an environment for realistic Test & Evaluation in a Joint operational context and enhance interoperability and reuse with other test ranges and facilities though the use of the Test and Training Enabling Architecture (TENA) and connectivity to the Joint Mission Environment Test Capability (JMETC) joint test infrastructure. The intent of the "TENA-Enabled Range Roadmap" is to describe how TENA would be incorporated into PMRF's range infrastructure through both near-term upgrades and long-term system replacement. While details of this implementation plan are specific to PMRF, this roadmap can serve as a blueprint for TENA implementation at other ranges throughout the DoD.
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Koehly, Rodolphe. « Fabrication of sustainable resistive-based paper touch sensors : Application to music technology ». Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104691.

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Building novel Digital Music Instruments (DMIs) requires the use of a variety of sensors to transduce human actions to electronic signals that will control sound synthesis variables. Among them, contact (force/pressure) sensors such as the Force Sensing Resistors (FSR) are the most commonly used in the design of DMIs. Similar commercial sensor designs based on conductive materials also enable to detect position, displacement or flexion. Unfortunately, although commercial sensors can be easily found at electronic resellers, only a few standardised models with predefined sizes, shapes and electric characteristics can be purchased. Moreover, the quality of the sensor appears to depend on their shape and dimension. These limitations have direct implications on the design of novel DMIs, which actually need to be adapted to the existing offer of commercial sensors. After various investigations with polymers, textiles, adhesives and glues, we finally chose to focus on conductive paper as a generic material for producing sustainable, flexible and customisable contact sensors. This thesis study presents two directions on paper sensors investigations: We first began by studying the potential of building paper contact sensors using industrial paper. This type of paper is originally produced to provide optimal colour properties and is not optimised for use as a conductive material. Nevertheless, it has been shown that it provides a very efficient choice for the design of custom sensors. Several sensor prototypes were built using samples of four industrial papers from three main manufacturers (ArjoWiggins (Canson), Fabriano, and PASCO) and have been used in the design of various gesture controllers. In order to verify the electrical behaviour of these prototypes, we developed a special test machine that enabled us to characterise the sensor's properties in terms of repeatability, drift and hysteresis, and to compare the results with commercial sensors. The second step was to consider how to produce such a paper. Laboratory experiments were performed to evaluate the influence of the papermaking process as well as the chemicals to be added to optimise the retention and formation of a uniform mix of pigments and fibres, enabling the fabrication of a rough, porous, compressible but still elastic material. Papers with various amounts of pigment and different sheet structures were made and characterised in order to evaluate the influence of the paper characteristics onto their electrical resistance. Resulting materials were also characterised with the test machine and compared to other types of resistive materials. This research contributes to the promotion of alternative solutions for the development of contact sensors. In particular, it shows that conductive paper and inks are an ecological alternative to conducting polymers for producing custom contact sensors. Paper sensors can replace industrial sensors in many applications, as they are equally efficient. Moreover they are recyclable or reusable, flexible and customisable, therefore extending the capabilities of industrial solutions. The production of such a paper will provide researchers with raw materials to produce their own sensors and realise new DMIs, such as the ones presented in this thesis. Apart from their usefulness in acquiring expert musical gestures, paper sensors have potential applications in many other fields such as medical (e.g. as hospital bed sheet), security (e.g. sensitive floors), intelligent packaging, etc. Multi-disciplinary research is a profitable way for creating new technological outputs. Conductive paper can provide new ways of building DMIs at moderate cost and with an environmental-friendly label. Music and arts can in return offer an efficient and sensitive proof-of-work to convince industries that conductive papers have a major potential in other applications.
La fabrication de nouveaux instruments musicaux numérique (IMN) nécessite l'utilisation de plusieurs types de capteurs afin de convertir les actions humaines en signaux électroniques pour le contrôle de variables de synthèse sonore. Parmi eux les capteurs de contact (force/pression) tels que les "Force Sensing Resistors" (FSR) sont les capteurs les plus utilisés. Même si des capteurs commerciaux peuvent facilement êtres trouvés chez des détaillants en électronique, seul un nombre limité de modèles standardisés, avec des tailles, des formes et des caractéristiques électriques prédéfinies, peuvent êtres achetés. Ces limitations ont des conséquences directes sur le design de nouveaux IMN qui doivent ainsi se limiter aux offres commerciales existantes.Après divers essais utilisant des polymères souples, des textiles, et des colles, nous avons choisi de nous concentrer sur les papiers conducteurs comme matières premières pour produire des capteurs de contact sensibles et adaptables. Ces recherches de thèse se sont alors orientées vers deux directions.Premièrement, nous avons commencé par fabriquer des capteurs à partir de papiers industriels à l'origine produit pour fournir des papiers colorés, et non pour une utilisation en tant que matériau conducteur. Nous avons montré néanmoins que ce papier conducteur est un matériaux sensible et exploitable. Plusieurs prototypes de capteurs ont ainsi été fabriqués en utilisant des échantillons de quatre types de papiers industriels provenant de trois manufacturiers (ArjoWiggins (Canson), Fabriano et PASCO). Ces prototypes ont ensuite été utilisés pour le développement de divers contrôleurs gestuels. Afin de vérifier le comportement des capteurs en action, nous avons développé un banc d'essai permettant de caractériser les propriétés électriques de ces capteurs en termes de répétabilité, dérive et hystérésis, et de les comparer à ceux des capteurs commerciaux.La seconde direction consistait à rechercher comment produire de tels papiers. Des expériences de laboratoires ont permis d'évaluer réglages des processus de fabrication à privilégier et les additifs chimiques à ajouter pour optimiser la rétention et la formation d'un mélange uniforme de pigments et de fibres et la formation d'un papier rugueux, poreux et compressible mais toujours élastique. Plusieurs types de papiers ont été réalisés en faisant varier la quantité de pigments et la structure des feuilles afin d'évaluer l'influence des caractéristiques d'un papier sur sa résistance électrique. Cette recherche contribue à la promotion de solutions alternatives pour le développement de capteurs de contact. Elle montre en particulier que les papiers conducteurs et les encres conductrices sont une alternative écologique aux polymères conducteurs pour la production de capteurs de contact. Les capteurs en papiers peuvent remplacer les capteurs industriels dans de nombreuses applications. De plus, ils sont recyclables et adaptables à tous types de design. La production d'un tel papier va procurer un stock de matières premières aux chercheurs afin qu'ils produisent leurs propres capteurs et conçoivent de nouveaux IMN tels que ceux qui sont présentés dans cette thèse. De plus, mis à part leurs capacités pour le contrôle de gestes musicaux experts, les capteurs en papier ont des applications potentielles dans d'autres domaines tels qu'en médecine (monitoring de lits d'hôpitaux), sécurité et domotiques (sols et murs sensibles), emballages intelligents, etc…La recherche multidisciplinaire est un moyen susceptible de générer de nouvelles technologies. Le papier conducteur offre de nouveaux moyens de produire des IMN pour un coût modéré en plus d'un label environnemental. La musique et les arts permettent en retour d'offrir une application ludique, attirante qui à fait ses preuves afin de convaincre les industries que les papiers conducteurs ont un gros potentiel dans d'autres applications.
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Wigent, Mark, et Robert A. McKinley. « TENA Implementation at Pacific Missile Range Facility (PMRF) Paper ». International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579669.

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ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NV
PMRF provides a volume of space, which may include any combination of below-surface, surface, above-surface environments to safely test, gather data, and monitor in real time, the performance of systems being developed. This paper discusses how TENA implementation in range instrumentation; including radar, optics, video, GPS, and telemetry systems; will enhance data acquisition and distribution of systems under test. While details of this implementation plan are specific to PMRF, this approach can serve as a blueprint for TENA implementation at other ranges throughout the DoD.
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Silva, José Ricardo da. « Desenvolvimento de sensores químicos de baixo custo visando ao monitoramento da qualidade e da potabilidade de águas ». Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-08022019-094800/.

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A falta de acesso à água potável ainda é um problema de saúde pública no Brasil. O desenvolvimento de novos métodos analíticos de baixo custo para o reconhecimento de amostras contaminadas é uma necessidade, pois análises laboratoriais estão fora da realidade socioeconômica da população mais vulnerável. Visando contribuir para a resolução deste problema, esta tese apresenta esforços para o desenvolvimento de métodos de baixo custo para a análise de qualidade de águas ambientais. Foi estudada a associação de ferramentas quimiométricas com sensores voltamétricos para tentar discriminar amostras de águas contaminadas com espécies eletroativas. O modelo desenvolvido foi capaz de discriminar de forma satisfatória amostras contaminadas contendo chumbo(II), cobre(II), zinco(II) e nitrito. Os esforços para a redução do custo das análises também focaram no desenvolvimento de sensores com materiais de baixo custo. Um dos dispositivos voltamétricos propostos foi capaz de quantificar metais tóxicos e pesticidas, utilizando papel, grafite e cera. Foi desenvolvido também um sistema de agitação por som que resultou em um aumento significativo da sensibilidade dos dispositivos voltamétricos portáteis permitindo a quantificação de chumbo(II) até 48 nmol L-1, cádmio(II) até 370 nmol L-1 e zinco(II) até 340 nmol L-1. Outro sensor voltamétrico foi confeccionado utilizando apenas papelão como matéria prima, para o qual um laser de CO2 foi utilizado pela primeira vez com o intuito de pirolisar a superfície do papelão gerando estruturas de carbono condutoras. Sensores colorimétricos em papel foram testados com sucesso para a quantificação de fluoreto até 500 µmol L-1 em amostras de água mineral utilizando fotografias retiradas por um telefone celular para a construção de modelos12 de calibração. Com outro sistema colorimétrico em papel foi possível medir o pH de amostras utilizando um método de calibração multivariada. Como mostrado neste trabalho, o desenvolvimento e a integração dos dispositivos analíticos em papel é uma alternativa abrangente, confiável e de baixo custo para a análise da qualidade de águas ambientais.
The lack of access to safe water remains as a public health problem in Brazil. The development of new analytical methods for low cost contaminated samples recognition is necessary since the complete laboratorial procedures are away from the reality of the most socioeconomic vulnerable population. In order to contribute to solve this problem, this thesis shows our efforts to develop new low-cost analytical methods to evaluate environmental waters quality. The combination of chemometric tools with voltammetric sensors was studied to discriminate contaminated water samples with electroactive species. The proposed model was able to discriminate potable and contaminated samples containing lead(II), copper(II), zinc(II) and nitrite species. Efforts to reduce the analysis cost have also focused on the development of sensors using low-cost materials. A proposed voltammetric device fabricated with paper, graphite and wax was able to quantify heavy metals and pesticides. The use of a sound agitation system for the portable voltammetric devices resulted in a significant increase in the sensitivity allowing the quantification of lead(II) above 48 nmol L-1, cadmium(II) above 370 nmol L-1 e and zinc(II) above 340 nmol L-1 . Another voltammetric sensor was made for the first time using only cardboard as material and a CO2 laser to pyrolyze the cardboard surface generating conductive carbon structures. Paper colorimetric sensors were successfully tested for fluoride quantification in spring water samples based on photographs taken by a smartphone with a LOQ of 500 µmol L-1. Another paper colorimetric system was capable to measure the pH of samples using a multivariate calibration method. As shown in this thesis, the development and integration of analytical paper-based devices is a reliable and low-cost alternative for water quality analysis
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Hannani, Adnan. « Analysis of authentication systems : which is the most suitable for BTG ? » Thesis, University West, Department of Technology, Mathematics and Computer Science, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-464.

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Gonçalves, Ricardo Miguel Romão. « Antenna design for passive sensors in non-conventional materials ». Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17298.

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Doutoramento em Engenharia Eletrotécnica
Motivado pela larga expansão dos sistemas RFID e com o desenvolvimento do conceito de Internet das Coisas, a evolução no desenho e métodos de produção de antenas em suportes de materiais alternativos tem tido uma exploração intensiva nos últimos anos. Isto permitiu, não só o desenvolvimento de produtos no campo da interação homem-máquina, mas também tornar estes produtos mais pequenos e leves. A procura de novas técnicas e métodos para produzir eletrónica impressa e antenas em materiais alternativos e, portanto, uma porta aberta para o aparecimento de novas tecnologias. Isto aplica-se especialmente no mercado dos sensores, onde o peso, o tamanho, o consumo energético, e a adaptabilidade a diversos ambientes, têm grande relevância. Esta tese foca-se no desenvolvimento de antenas com suporte em materiais não convenvionais, como os já testados papel e têxteis, mas também na exploração de outros, desconhecidos do ponto de vista eléctrico, como a cortiça e polímeros biodegradáveis usados em impressão 3D. Estes materiais são portanto usados como substrato, ou material de suporte, para diversas antenas e, como tal, as propriedades electromagnéticas destes materiais têm de ser determinadas. Assim, e apresentado neste documento uma revisão de métodos de caracterização de materiais, bem como a proposta de um método baseado em linhas de trasmissão impressas, e a respectiva caracterização electromagnética de diversos materiais. Além disso, são propostos desenhos de antenas para diversos cenários e aplicações utilizando os materiais anteriormente mencionados. Com esta tese concluiu-se que a utilização de materiais alternativos e hoje uma realidade e os resultados obtidos são muito encorajodares para o desenvolvimento de um conjunto de sensores para aplicações RFID com uma grande capacidade de integração.
The advancement of the design and fabrication of antennas using textiles or paper as substrates has rapidly grown motivated by the boom of RFID systems and the developing concept of the Internet of Things. These advancements have allowed, not only the development of products for manmachine interaction, but also to make these products smaller and lighter. The search for new techniques and methods to produce printed electronics and antennas in alternative materials is therefore an open door for new technologies to emerge. Especially in the sensors market, where weight, size, power consumption and the adaptability to the target application, are of great importance. This thesis focuses on the development of antenna design approaches with alternative materials, such as the already tested paper and textiles, but also others relatively unknown, such as cork and biodegradable polymers used in 3D printing. These materials are applied to act as substrates, or support structures for the antennas. Therefore, their electromagnetic properties need to be determined. Due to that, a review of electromagnetic characterization methods, as well as the proposal of a custom method based on printed transmission lines, is presented in this document. Besides, several antenna designs, for di erent application scenarios, using the previously mentioned materials, are proposed. With this thesis it was proved that it is possible to develop passive sensors in di erent alternative materials for RFID applications and others, which shows great promise in the use of these materials to achieve higher integration in sensing and identi cation applications.
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Björk, Anders. « Chemometric and signal processing methods for real time monitoring and modeling using acoustic sensors : applications in the pulp and paper industry / ». Stockholm, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4383.

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Livres sur le sujet "PAPER SENSORS"

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Reinhardt, Willsch, et Kersten Ralf Th 1947-, dir. Selected papers on fiber optic sensors. Bellingham, Wash : SPIE Optical Engineering Press, 1995.

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Corrosion/94 Symposium "Corrosion and Corrosivity Sensors" (1994 Baltimore, Md.). Corrosion and corrosivity sensors : Papers presented at the Corrosion/94 Symposium "Corrosion and Corrosivity Sensors". Houston, TX : NACE International, 1994.

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1964-, Sanders Jeffrey S., dir. Selected papers on natural and artificial compound eye sensors. Bellingham, Wash., USA : Spie Optical Engineering Press, 1996.

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A, Sadjadi Firooz, dir. Selected papers on sensor and data fusion. Bellingham, Wash : SPIE Optical Engineering Press, 1996.

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N, Kulchin Yuri, Society of Photo-optical Instrumentation Engineers. Russian Chapter. et Society of Photo-optical Instrumentation Engineers., dir. Distributed fiber optical sensors and measuring networks : Selected papers on distributed fiber optical sensors and measuring networks, 1999-2000. Bellingham, Wash : SPIE, 2001.

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International, Conference on Optical Fiber Sensors (1988 New Orleans La ). Optical fiber sensors : Summaries of papers presented at the Optical Fiber Sensors Topical Meeting, January 27-29, 1988, New Orleans, Louisiana. Washington, D.C : OSA, 1988.

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International, Conference on Optical Fiber Sensors (1988 New Orleans La ). Optical fiber sensors : Summaries of papers presented at the Optical Fiber Sensors Topical Meeting, January 27-29, 1988, New Orleans, Louisiana. Washington, D.C : Optical Society of America, 1988.

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International Conference on Optical Fiber Sensors (1991 Wuhan, China). Advances in optical fiber sensors : Selected papers from the International Conference on Optical Fiber Sensors, 9-11 October 1991, Wuhan, China. Bellingham, Wash., USA : SPIE Optical Engineering Press, 1992.

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Glaz, Kazimir. Works on paper, 1997. [60] leaves : chiefly ill. (col.), 1998.

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Hutchinson, Suzanne. Gardens of the senses : Paintings, reliefs, works on paper. Brighton : Art for Breakfast, 1995.

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Chapitres de livres sur le sujet "PAPER SENSORS"

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Long, Graham. « Paper Making and Printing ». Dans Real Applications of Electronic Sensors, 57–72. London : Macmillan Education UK, 1989. http://dx.doi.org/10.1007/978-1-349-10107-8_4.

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Sundriyal, Poonam, et Shantanu Bhattacharya. « Paper-Based Energy Storage Devices ». Dans Advanced Functional Materials and Sensors, 183–91. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0489-1_11.

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Chauhan, Pankaj Singh, Mohit Pandey et Shantanu Bhattacharya. « Paper Based Sensors for Environmental Monitoring ». Dans Advanced Functional Materials and Sensors, 165–81. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0489-1_10.

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Naik, Priyanka, Riddha Manna et Debjani Paul. « Nucleic Acid Amplification on Paper Substrates ». Dans Advanced Functional Materials and Sensors, 115–46. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0489-1_8.

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Pandey, Mohit, Krutika Shahare, Mahima Srivastava et Shantanu Bhattacharya. « Paper-Based Devices for Wearable Diagnostic Applications ». Dans Advanced Functional Materials and Sensors, 193–208. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0489-1_12.

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Rashiku, Mohammed, et Shantanu Bhattacharya. « Fabrication Techniques for Paper-Based Microfluidic Devices ». Dans Advanced Functional Materials and Sensors, 29–45. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0489-1_3.

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Jaitpal, Siddhant, et Debjani Paul. « Flow Control in Paper-Based Microfluidic Devices ». Dans Advanced Functional Materials and Sensors, 47–66. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0489-1_4.

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Choudhary, Aditya, Urmila Brighu et Kanika Saxena. « Paper-Based Devices for Food Quality Control ». Dans Advanced Functional Materials and Sensors, 147–63. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0489-1_9.

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Xue, Peng, et Yuejun Kang. « Paper-Based Sensors and Microfluidic Chips ». Dans Encyclopedia of Microfluidics and Nanofluidics, 2647–55. New York, NY : Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4614-5491-5_1712.

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Shergujri, Mohd Aurif, Rabeuj Jaman, Arup Jyoti Baruah, Mrityunjoy Mahato, Davidson Pyngrope, L. Robindro Singh et Manashjit Gogoi. « Paper-Based Sensors for Biomedical Applications ». Dans Biomedical Engineering and its Applications in Healthcare, 355–76. Singapore : Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-3705-5_15.

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Actes de conférences sur le sujet "PAPER SENSORS"

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Tentzeris, Manos M., Anya Traille, Hoseon Lee, Amin Rida, Vasilis Lakafosis et Rushi Vyas. « Inkjet-printed paper/polymer-based ». Dans 2010 Ninth IEEE Sensors Conference (SENSORS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icsens.2010.5690595.

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Allen, Noah, Preston Pinto, Aziz Traore et Masoud Agah. « Paper-based capacitive mass sensor ». Dans 2011 IEEE Sensors. IEEE, 2011. http://dx.doi.org/10.1109/icsens.2011.6127369.

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Mostafalu, Pooria, et Sameer Sonkusale. « Paper-based super-capacitor using micro and nano particle deposition for paper-based diagnostics ». Dans 2013 IEEE Sensors. IEEE, 2013. http://dx.doi.org/10.1109/icsens.2013.6688437.

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Crowley, Kevin, Diana Nakidde, Jeffrey Travis et Masoud Agah. « Paper-based MEMS hair cell array ». Dans 2013 IEEE Sensors. IEEE, 2013. http://dx.doi.org/10.1109/icsens.2013.6688543.

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López-Higuera, José Miguel. « Biomedical Optical Sensors : Currents and Trends (Invited Paper) ». Dans Optical Sensors. Washington, D.C. : OSA, 2016. http://dx.doi.org/10.1364/sensors.2016.sem3d.1.

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Paul, Ambarish, Md Abdul Kafi et Ravinder Dahiya. « Paper based pressure sensor for green electronics ». Dans 2017 IEEE SENSORS. IEEE, 2017. http://dx.doi.org/10.1109/icsens.2017.8233980.

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Butzbach, Markus, André Malz et Wilhelm Stork. « Optical Coherence Tomography for the Assessment of Paper Quality ». Dans Optical Sensors. Washington, D.C. : OSA, 2010. http://dx.doi.org/10.1364/sensors.2010.swd4.

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Qian, Jingjing, Qinming Zhang, Joyce C. Lai, Yixuan Wang et Meng Lu. « Rapid MicroRNA Detection Using Paper-Based Isothermal Amplification ». Dans 2021 IEEE Sensors. IEEE, 2021. http://dx.doi.org/10.1109/sensors47087.2021.9639797.

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Maddipatla, Dinesh, Binu Baby Narakathu, Sai Guruva Reddy Avuthu, Sepehr Emamian, Ali Eshkeiti, Amer Abdulmahdi Chlaihawi, Bradley J. Bazuin, Margaret K. Joyce, Christie Wong Barrett et Massood Zandi Atashbar. « A novel flexographic printed strain gauge on paper platform ». Dans 2015 IEEE Sensors. IEEE, 2015. http://dx.doi.org/10.1109/icsens.2015.7370606.

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Malik, Shahid, Meraj Ahmad, Meera Punjiya, Aydin Sadeqi, Maryam Shojaei Baghini et Sameer Sonkusale. « Respiration Monitoring Using a Flexible Paper-Based Capacitive Sensor ». Dans 2018 IEEE Sensors. IEEE, 2018. http://dx.doi.org/10.1109/icsens.2018.8589558.

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Rapports d'organisations sur le sujet "PAPER SENSORS"

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Hall, Maclin S., Theodore G. Jackson et Ernest Brown. On-machine ultrasonic sensors for paper stiffness. Final report. Office of Scientific and Technical Information (OSTI), avril 2000. http://dx.doi.org/10.2172/807457.

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Hall, M. S., P. H. Brodeur et T. G. Jackson. On-machine sensors to measure paper mechanical properties. Final report. Office of Scientific and Technical Information (OSTI), octobre 1993. http://dx.doi.org/10.2172/10156887.

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Hall, M. S., et C. C. Jr Habeger. On-machine sensors to measure paper mechanical properties, Report No. 1. Office of Scientific and Technical Information (OSTI), octobre 1988. http://dx.doi.org/10.2172/6825594.

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Jelinek, Raz, Paul Dawson, Timothy Hanks, William Pennington et Julie Northcutt. Bacterial sensors for food processing environments. United States Department of Agriculture, janvier 2013. http://dx.doi.org/10.32747/2013.7598157.bard.

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The overall objective of this project was to develop a new bacterial contaminant sensor based upon polydiacetylene(PDA) which is a unique polymer that changes color and configuration in response to external molecular stimuli. While this polymer has been well studied and has been shown to respond to bacterial stimuli in the laboratory, application to food processing environments has not been demonstrated. One hurdle in the application of biosensors in a food processing environment is interference of food sanitizers with the detection of bacteria. Common food sanitizers were evaluated for their response to PDA and different concentrations paving the way for use of modified PDAs developed by the research team to be used in food plants. Further development of PDA bacterial sensors focused on simplifying its application by immobilizing PDA on cotton and paper for use on swabs, wipes and dip papers. Increasing the sensitivity of PDAs was investigated by attaching fluorophores. Future and continued work will include the decoration of PDAs with apatmers to improve the specificity of the biosensor to food pathogens.
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Hamlin, Alexandra, Erik Kobylarz, James Lever, Susan Taylor et Laura Ray. Assessing the feasibility of detecting epileptic seizures using non-cerebral sensor. Engineer Research and Development Center (U.S.), décembre 2021. http://dx.doi.org/10.21079/11681/42562.

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This paper investigates the feasibility of using non-cerebral, time-series data to detect epileptic seizures. Data were recorded from fifteen patients (7 male, 5 female, 3 not noted, mean age 36.17 yrs), five of whom had a total of seven seizures. Patients were monitored in an inpatient setting using standard video electroencephalography (vEEG), while also wearing sensors monitoring electrocardiography, electrodermal activity, electromyography, accelerometry, and audio signals (vocalizations). A systematic and detailed study was conducted to identify the sensors and the features derived from the non-cerebral sensors that contribute most significantly to separability of data acquired during seizures from non-seizure data. Post-processing of the data using linear discriminant analysis (LDA) shows that seizure data are strongly separable from non-seizure data based on features derived from the signals recorded. The mean area under the receiver operator characteristic (ROC) curve for each individual patient that experienced a seizure during data collection, calculated using LDA, was 0.9682. The features that contribute most significantly to seizure detection differ for each patient. The results show that a multimodal approach to seizure detection using the specified sensor suite is promising in detecting seizures with both sensitivity and specificity. Moreover, the study provides a means to quantify the contribution of each sensor and feature to separability. Development of a non-electroencephalography (EEG) based seizure detection device would give doctors a more accurate seizure count outside of the clinical setting, improving treatment and the quality of life of epilepsy patients.
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Riter, Karmann, Anthony Clint Clayton, Kelley Rountree et Prakash Doraiswamy. Solar Station for an Off-the-Grid Air Quality Sensor System. RTI Press, juin 2023. http://dx.doi.org/10.3768/rtipress.2023.mr.0051.2306.

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Air quality monitoring is a rapidly growing area of citizen science, or community science (CS), thanks to the availability of low-cost sensors. Contributing to a crowdsourced data platform (e.g., http:// purpleair .com/ map) is usually easy in urban areas, where there is access to uninterrupted electricity and wireless internet (Wi-Fi). However, there are sometimes security restrictions on Wi-Fi or a lack of exterior power outlets. Also, rural regions, particularly in low- and middle-income countries, often lack electricity and Wi-Fi continuity. RTI International has designed and distributed a solar power and Wi-Fi station that can adequately power both a small air quality sensor (e.g., PurpleAir PA-II) and a Wi-Fi hotspot to overcome these challenges. The station housing can accommodate a battery, a controller, and a cell phone or another type of Wi-Fi hotspot device. This paper discusses the need for such a station; a design for the current station, including parts list; suggestions for modifications in various use cases; and design factors to consider, including amount of sunlight per day, intended number of operational days under cloudy conditions, season, and total power requirements. This method is intended to be open source and a starting point for citizen scientists and CS projects.
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Rathinam, Francis, P. Thissen et M. Gaarder. Using big data for impact evaluations. Centre of Excellence for Development Impact and Learning (CEDIL), février 2021. http://dx.doi.org/10.51744/cmb2.

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The amount of big data available has exploded with recent innovations in satellites, sensors, mobile devices, call detail records, social media applications, and digital business records. Big data offers great potential for examining whether programmes and policies work, particularly in contexts where traditional methods of data collection are challenging. During pandemics, conflicts, and humanitarian emergency situations, data collection can be challenging or even impossible. This CEDIL Methods Brief takes a step-by-step, practical approach to guide researchers designing impact evaluations based on big data. This brief is based on the CEDIL Methods Working Paper on ‘Using big data for evaluating development outcomes: a systematic map’.
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Blevins, Matthew, Gregory Lyons, Carl Hart et Michael White. Optical and acoustical measurement of ballistic noise signatures. Engineer Research and Development Center (U.S.), janvier 2021. http://dx.doi.org/10.21079/11681/39501.

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Supersonic projectiles in air generate acoustical signatures that are fundamentally related to the projectile’s shape, size, and velocity. These characteristics influence various mechanisms involved in the generation, propagation, decay, and coalescence of acoustic waves. To understand the relationships between projectile shape, size, velocity, and the physical mechanisms involved, an experimental effort captured the acoustic field produced by a range of supersonic projectiles using both conventional pressure sensors and a schlieren imaging system. The results of this ongoing project will elucidate those fundamental mechanisms, enabling more sophisticated tools for detection, classification, localization, and tracking. This paper details the experimental setup, data collection, and preliminary analysis of a series of ballistic projectiles, both idealized and currently in use by the U.S. Military.
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Beshouri, Huschenbett et Bothwell. PR-360-08207-R01 Cylinder Level Sensing and Control on Typical Pipeline Engines. Chantilly, Virginia : Pipeline Research Council International, Inc. (PRCI), février 2016. http://dx.doi.org/10.55274/r0010693.

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Further reductions in NOx emissions while maintaining optimum engine performance can only be obtained by improving engine combustion control at the cylinder level. This requires cylinder level sensors capable of continuously monitoring combustion performance in both the main combustion chamber (MCC) and the pre-combustion chamber (PCC) and electronically actuated valves that can respond to those measurements. Until recently, in-PCC combustion measurements on spark ignited engines were only possible in the laboratory using very expensive pressure sensors with extremely short lives. Ion Sense offers a non-intrusive, robust and cost effective method to monitor in-PCC combustion in the field on a continuous basis. Derived from automotive technology, ion sense utilizes post ignition ionization measurements from a standard spark plug. When measured from a spark plug mounted in a PCC Ion Sense provides a wealth of previously unavailable information on misfire, instability, flame initiation, early flame propagation, in PCC air/fuel ratio, etc. This work investigated the use of ion sense data collected in the PCC to monitor and control in PCC air/fuel ratio, main chamber air/fuel ratio and the timing of combustion events in both. This paper reports on the results of this testing as well as describing the optimization strategy developed which is applicable to the full range of pipeline engines.
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Lam, Tyler. Pulse Tube Interference in Cryogenic Sensor Resonant Circuits - Final Paper. Office of Scientific and Technical Information (OSTI), août 2015. http://dx.doi.org/10.2172/1213150.

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