Academic literature on the topic 'Auto correlation tests'

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Journal articles on the topic "Auto correlation tests"

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Rafi, Mehdi Hasan, and Golam Mostafa. "Time Series Models for Radiated Electromagnetic Energy of Lightning Strokes Detected by World Wide Lightning Location Network." Journal of Physics: Conference Series 2471, no. 1 (2023): 012024. http://dx.doi.org/10.1088/1742-6596/2471/1/012024.

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Abstract Lightning is a significant atmospheric event and has a wide-ranging influence on the Earth’s climate. Recently a sensor station of World Wide Lightning Location Network (WWLLN) is hosted at Dhaka (23.81°N, 90.41°E) and one year (Jan 2021 to Dec 2021) lightning strokes energy data is investigated. In an effort to switch the analysis from descriptive to predictive, WWLLN lightning strokes energy data is modeled using time series analysis. The autoregressive integrated moving average (ARIMA) model has been applied to predict the data. According to the process of model selection, the auto
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Fu, Rong, Jizi Deng, Shang Yuan, Lu Gong, Jun Sun, and Zonghong Shao. "The Auto-Antibodies on Bone Marrow Cells in the Patients with Systemic Lupus Erythematosus." Blood 108, no. 11 (2006): 3856. http://dx.doi.org/10.1182/blood.v108.11.3856.3856.

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Abstract Objective:To explore the pathogenesis of cytopenia in the patients with systemic lupus erythematosus (SLE), the auto-antibodies on bone marrow mononuclear cells (BMMBC) in the patients with SLE were determined. Methods:Twenty one patients with SLE and ten healthy controls were enrolled in this study. BMMNC Coombs test was used to determine the aotoantibodies. The correlation between the types of auto-antibodies on BMMNC, the types of serum auto-antibodies and the counts of blood cells in the patients with SLE were also investigated. Results:Positive results of BMMBC-Coombs test were s
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Wang, Xisen. "White Noise Tests on the LSTM Model Trained with Double Pendulum." Journal of Physics: Conference Series 2137, no. 1 (2021): 012032. http://dx.doi.org/10.1088/1742-6596/2137/1/012032.

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Abstract This paper describes the intrinsic qualities of a simple double pendulum (DP), with a visual representation, a rigorous deduction of the Lagrangian equation, and a concrete factor analysis. LSTM model was utilized to simulate the double pendulum’s periodic and chaotic behaviors and evaluates the effectiveness of the model. The auto-correlation coefficients was calculated. Meanwhile, Box-Pierce test and Ljung-Box tests for various state-dependent time series were conducted to give various initial conditions to explore the DP system’s random characteristics. The research results are as
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Malahaeva, Svetlana, and Roman Potapov. "Aggressivness and Autoagressivness in the Web Text: Content Analysis of Pages in the Social Network «VKontakte»." Theoretical and Practical Issues of Journalism 7, no. 4 (2018): 724–40. http://dx.doi.org/10.17150/2308-6203.2018.7(4).724-740.

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The authors make a supposition that any social network is an array of texts that can be formally analyzed. Relying on the ideas of cultural-historical psychology, the authors consider the text as a model that is used to cognize the world and with the help of which higher mental functions are formed. The network text is analyzed as a semiotic system. The authors have created categories of the content analysis of pages in the social network VKontakte. These categories help to assess a persons aggressiveness and auto-aggressiveness. The respondents were 58 women and 63 men aged from 17 to 23. Com
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Srinivasulu, Akasam. "Validating The Assumptions of Residuals in ARIMA Model for Daily Stock Price Data By using R." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (2021): 971–78. http://dx.doi.org/10.22214/ijraset.2021.38942.

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Abstract: Identifying the past data and plannig for future is very important for every organization . Now a days Stock market playes a major role for the development of economy. For the countries economic development, stock market plays a vital role. For this modelling, forecasting is the best way to know the future stock prices based on the past stock prices data. In stock price data, forecasting of closed price plays a major role in financing economic decisions. The Arima model has developed and implemented in many applications .So the researchers utilize arima model in forecasting the close
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Spagnolo, Alessandro, Teresa Primo, Gabriele Papadia, and Antonio del Prete. "Numerical – Experimental Correlation of Sheet Hydroformed Component." Key Engineering Materials 651-653 (July 2015): 1140–45. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.1140.

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Sheet hydroforming has gained increasing interest in the automotive and aerospace industries because of its many advantages such as higher forming potentiality, good quality of the formed parts which may have complex geometry. The main advantage is that the uniform pressure can be transferred to any part of the formed blank at the same time. This paper reports numerical and experimental correlation for symmetrical hydroformed component. Experimental tests have been carried out through the hydroforming cell tooling, designed by the authors thanks to a research project, characterized by a variab
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Ni, Zejun. "Analysis of the Walt Disney Company's Stock Using the ARIMA Model." Advances in Economics, Management and Political Sciences 185, no. 1 (2025): 205–11. https://doi.org/10.54254/2754-1169/2025.lh23955.

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Nowadays, the entertainment industry, especially major companies like The Walt Disney Company, faces rapid market changes, and their stock prices are hugely influenced by global trends. Therefore, understanding and forecasting stock price movements has become crucial for investors and experts. This study uses the Auto Regressive Integrated Moving Average (ARIMA) model to analyze and forecast the stock price of the Walt Disney Company. Using daily stock data from September 2024 to March 2025, the research identifies that the original series is non-stationary and achieves stationarity after seco
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Ojha, Radhe Shyam, Vineet Kumar, and Sudesh Singh. "Impact of 5S on productivity and quality in an Indo-Japanese auto-component manufacturing company: An empirical study." E3S Web of Conferences 430 (2023): 01241. http://dx.doi.org/10.1051/e3sconf/202343001241.

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The present work probes the relationship between 5S vis-a-vis productivity and quality. 5S is an extraordinarily economical yet highly effective method of business management. Two hypotheses were formulated for testing with the random sample survey with a reliable and valid questionnaire on the targeted population. The collected data were analyzed using the statistical software SPSS Statistics V23. The statistical tests, namely, multiple correlations, regression analysis, and Pearson- Correlation analysis, were performed. The results show a strong positive correlation between productivity and
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Teixeira, Elsa M., Bruno J. Barros, Vasco M. C. Ferreira, and Noemi Frusciante. "Dissecting kinetically coupled quintessence: phenomenology and observational tests." Journal of Cosmology and Astroparticle Physics 2022, no. 11 (2022): 059. http://dx.doi.org/10.1088/1475-7516/2022/11/059.

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Abstract We investigate an interacting dark energy model which allows for the kinetic term of the scalar field to couple to dark matter via a power-law interaction. The model is characterised by scaling solutions at early times, which are of high interest to alleviate the coincidence problem, followed by a period of accelerated expansion. We discuss the phenomenology of the background evolution and of the linear scalar perturbations and we identify measurable signatures of the coupling in the dark sector on the cosmic microwave background, the lensing potential auto-correlation and the matter
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Priya, Nautiyal Shivani, Rawat Deepesh, et al. "IMPACT OF CLIMATIC VARIATION ON GROUNDWATER - A REVIEW." International Journal of Advances in Engineering & Scientific Research, Vol.4,, Issue 2, Feb-Apr-2017, (2017): 01–06. https://doi.org/10.5281/zenodo.569672.

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Worldwide climatic parameter characteristics are influenced due to Climatic variations .Investigations have been carried out by climatologists in order to find a possible relation of climate change with anthropogenic behavior by studying trends in different climatic parameters. However, the changes are not in same pattern for all the regions especially in India due to localized intensity and must be quantified locally to manage the natural resources. Temperature and Precipitation are the most important components of climatic parameter, has been widely measured as a starting point towards the a
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Dissertations / Theses on the topic "Auto correlation tests"

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Balit, Yanis. "Mechanical properties of additively manufactured or repaired single-track thickness structures by Directed Energy Deposition." Thesis, Institut polytechnique de Paris, 2019. http://www.theses.fr/2019IPPAX014.

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Les travaux de cette thèse ont été dédiés à l’étude de pièces minces en acier inoxydable 316L fabriquées ou réparées par Directed Energy Deposition (DED). La nouveauté principale est l’observation de la déformation à l’échelle de la microstructure. Pour ce faire, une expérience associant un essai de traction in situ dans un microscope électronique à balayage, de la corrélation d’images à haute résolution et une carte EBSD de la microstructure ont été réalisés. Les résultats obtenus permettent alors de mieux appréhender les différentes propriétés en traction ainsi que les comportements d’autoéc
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Truong, Thi Kim Tien. "Grandes déviations précises pour des statistiques de test." Thesis, Orléans, 2018. http://www.theses.fr/2018ORLE2057/document.

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Cette thèse concerne l’étude de grandes déviations précises pour deux statistiques de test:le coefficient de corrélation empirique de Pearson et la statistique de Moran.Les deux premiers chapitres sont consacrés à des rappels sur les grandes déviations précises et sur la méthode de Laplace qui seront utilisés par la suite. Par la suite, nous étudions les grandes déviations précises pour des coefficients de Pearson empiriques qui sont définis par:$r_n=\sum_{i=1}^n(X_i-\bar X_n)(Y_i-\bar Y_n)/\sqrt{\sum_{i=1}(X_i-\bar X_n)^2 \sum_{i=1}(Y_i-\bar Y_n)^2}$ ou, quand les espérances sont connues, $\t
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ROW, JEFFREY. "Origins of genetic variation and population structure of foxsnakes across spatial and temporal scales." Thesis, 2011. http://hdl.handle.net/1974/6271.

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Understanding the events and processes responsible for patterns of within species diversity, provides insight into major evolutionary themes like adaptation, species distributions, and ultimately speciation itself. Here, I combine ecological, genetic and spatial perspectives to evaluate the roles that both historical and contemporary factors have played in shaping the population structure and genetic variation of foxsnakes (Pantherophis gloydi). First, I determine the likely impact of habitat loss on population distribution, through radio-telemetry (32 individuals) at two locations varying in
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Book chapters on the topic "Auto correlation tests"

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Wuit Yee Kyaw, Hnin, and Phone Pyai Tun. "Spatial-Temporal Relations of Flood Risk and Its Potential Dynamic Pressures in Myanmar." In Natural Hazards - New Insights [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109831.

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Despite multiple challenges, floods remain the most frequently occurring hazard in Myanmar. Current developments of political instability, multidimensional insecurity, and associated economic crisis have burdened the existing vulnerabilities and inequalities of the Burmese people and their ecosystems. Diminishing adaptive capacities of degraded ecosystems, poor infrastructure, and extreme poverty, together with major livelihood dependency on climate-sensitive agriculture, will further increase flood risk. Moreover, other hazards such as COVID-19, heatwaves, and droughts may exacerbate flood im
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Zimeras, S., and Y. Matsinos. "Modelling Spatial Medical Data." In Effective Methods for Modern Healthcare Service Quality and Evaluation. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9961-8.ch004.

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Models are sometimes incomplete, especially in scaling data where other information of large regions needs to be predicted by smaller ones. Uncertainty analysis is the process of assessing uncertainty in modelling or scaling to identify major uncertainty sources, quantify their degree and relative importance, examine their effects on model output under different scenarios, and determine prediction accuracy. Especially for large dimensional data where spatial process in regional investigation are difficult to applied due to incompleteness leading us to spatial heterogeneity and non-linearity of
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Conference papers on the topic "Auto correlation tests"

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Simpson, Mark W., Willem B. van der Linde, Duncan C. McCune, and Herbert E. Townsend. "License-Plate Cosmetic Corrosion Tests of Automotive Coated Steel Sheet." In CORROSION 1998. NACE International, 1998. https://doi.org/10.5006/c1998-98553.

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Abstract A new, standard laboratory test (SAE J2334) for evaluation of the cosmetic corrosion resistance of autobody steel sheet has been developed through the joint efforts of SAE’s Automotive Corrosion Prevention Committee (SAE/ACAP) and the Auto/Steel Partnership’s (A/SP) Corrosion Task Force. Results from this test have been shown to give an excellent correlation with those of on-vehicle tests conducted for five years in Canada at St. John’s, Newfoundland and Montreal, Quebec. To determine how results of the Canadian tests relate to environments in the US, racks of identical materials were
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Wan, C. K., Hongzhe Sun, and Ji-Dong Gu. "Surface Properties of Galvanized Metals and Attachment by the Bacterium Janthinobacterium Lividum." In CORROSION 2003. NACE International, 2003. https://doi.org/10.5006/c2003-03567.

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Abstract Atomic Force Microscopy (AFM) is a useful tool for characterizing material surface properties and studying in situ bacterial biofilms formed on metal surfaces. The aims of the present study were to evaluate metal surface roughness after a series of treatments and attachment of the bacterium Janthinobacterium lividum, isolated from a drinking-water catridge, and to establish the relationship between surface treatment and susceptibility to biofilm formation. The four metal coupons used included Al Galvanized 0.3%, 5%, 55% and a pure zinc plate. Our results showed that several roughness
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Tan, Yong-Keng, and Jianye Ching. "Identification of Horizontal Auto-Correlation Parameters Using Inclined Cone Penetration Tests—Preliminary Results." In Geo-Risk 2023. American Society of Civil Engineers, 2023. http://dx.doi.org/10.1061/9780784484999.015.

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Nakakita, Tomofumi, Masahiro Kurosaki, and Yukio Kamiyoshihara. "Experimental Investigation of a Stall Prediction System Using a Transonic Multistage Compressor." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28199.

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This paper describes the test results of a stall prediction system using a transonic multistage axial compressor. The test results show that there is a clear relationship between the stall margin and the stall-warning index measured at the first stage. The stall warning index is derived from auto correlation of casing wall pressure signals above the rotor tip. In the tests, the compressor installed with pressure transducers on the casing wall near the leading edges of the first three rotors was forced to stall while operating at a constant speed by closing the discharge valve. The test results
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Bounaceur, Roda, Romain Heymes, Pierre-Alexandre Glaude, et al. "Development of an Artificial Intelligence Model to Predict Combustion Properties, With a Focus on Auto-Ignition Delay." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-102128.

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Abstract Hydrogen-compatible gas turbines are one way to decarbonize electricity production. However, burning and handling hydrogen is not trivial because of its high reactivity and tendency to detonate. Mandatory safety parameters, such as auto-ignition delay times, can be estimated thanks to predictive detailed kinetic models, but with significant calculation times that limit coupling with fluid mechanic codes. An auto-ignition prediction tool was developed based on an artificial intelligence (AI) model for fast computations and an implementation into an explosion model. A dataset of ignitio
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Bayliff, Scott, Bret Windom, Anthony Marchese, et al. "Controlled End Gas Auto Ignition With Exhaust Gas Recirculation on a Stoichiometric, Spark Ignited, Natural Gas Engine." In ASME 2020 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icef2020-2979.

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Abstract The goal of this study is to address fundamental limitations to achieving diesel-like efficiencies in heavy duty on-highway natural gas (NG) engines. Engine knock and misfire are barriers to pathways leading to higher efficiency engines. This study explores enabling technologies for development of high efficiency stoichiometric, spark ignited, natural gas engines. These include design strategies for fast and stable combustion and higher dilution tolerance. Additionally, advanced control methodologies are implemented to maintain stable operation between knock and misfire limits. To imp
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Kwon, Jieun, Luke Bromback, and Barry Kudrowitz. "Divergent Thinking Ability + Interest = Creative Ideas: Exploring the Relationships Between Cognitive Creativity Assessments and Product Design Idea Generation." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67261.

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The external validity of existing creativity tests was examined in the product-design field. To examine the external validity, this study adopted the Consensual Assessment Technique (CAT), by which industry leaders directly rate product ideas for their creativity. A simple correlation analysis showed that among three broadly used creativity tests (Remote Associations Test, Alternative Uses Test, and Torrance Test for Creative Thinking), only the Alternative Uses Test (AUT) was found to predict creativity in the product-design industry. In addition to the correlations analysis, two factors, pro
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Wilkinson, D., P. Vowden, A. B. Latif, S. M. Rajah, and R. C. Kester. "EICOSANOIDS AND VASOSPASM." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643385.

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To investigate the hypothesis that abnormalities in prostanoid metabolism may be an aetiological factor in Raynaud's syndrome (RS) we have measured the stable metabolites 6-keto-prostaglandin F1α (6-keto-PGF1α ) and thromboxane B2 (TXB2), using a radioimmunoassay. The table gives their levels (in ng/ml) and ratio (mean±SD) in healthy volunteers and in a group of patients with RS.In the control group there was no significant correlation between prostanoid levels and age, sex or smoking habit. In primary Raynaud's TXB2- levels and the ratio tend to be elevated from our control values. Patients w
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Adil Mansoor, AL-Husnah. "Role of Interleukin-35 In The Pathogenesis of Hashimoto’s Thyroiditis Disease." In X INTERNATIONAL CONGRESS OF PURE AND APPLIED TECHNOLOGICAL SCIENCES. Rimar Academy, 2023. http://dx.doi.org/10.47832/minarcongress10-1.

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The immune system has the ability to distinguish between self and non-self. Also, Regulatory T-cells are a portion of Tcells that are in charge of preserving regulation of the immune system and immune tolerance through active immunerepression. Immune tolerance is very important to prevent the immune system from interacting against itself and thus to avoid the development of autoimmune diseasesInterleukin-35 (IL-35), which is a member of the interleukin-12 (IL12) cytokine family, is an anti-inflammatory immune response that plays the important function in the obstruction of the development of a
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Narayanan, Aditya, Andy Morris, Catrin Mair Davies, and John Dear. "Recent Developments in ARCMAC and Related Creep Strain Monitoring Techniques." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57948.

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Developments have been made to E.ON’s Auto-Reference Creep Management and Control (ARCMAC) system to measure strain at high temperature using both Digital Image Correlation (DIC) and conventional ARCMAC techniques. These techniques are aimed at measuring creep strain rate in power plant steam pipes and associated weldments operating at high temperatures and pressures for the purposes of estimation of remaining life of such components. The ARCMAC optical strain measurement system is used to measure point to point strain through the capture and analysis of images of a pair of Inconel gauges, wit
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Reports on the topic "Auto correlation tests"

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Galili, Naftali, Roger P. Rohrbach, Itzhak Shmulevich, Yoram Fuchs, and Giora Zauberman. Non-Destructive Quality Sensing of High-Value Agricultural Commodities Through Response Analysis. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7570549.bard.

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The objectives of this project were to develop nondestructive methods for detection of internal properties and firmness of fruits and vegetables. One method was based on a soft piezoelectric film transducer developed in the Technion, for analysis of fruit response to low-energy excitation. The second method was a dot-matrix piezoelectric transducer of North Carolina State University, developed for contact-pressure analysis of fruit during impact. Two research teams, one in Israel and the other in North Carolina, coordinated their research effort according to the specific objectives of the proj
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