86 research outputs found
Data for temperature and leaf gas exchange of aquaponic lettuce
No full textThe CEA_Data.xlsx file contains 6 sheets containing thermo-gas and leaf canopy growth and moisture signatures. Sheet 1 (Perday) contains week no., day, humidity, temperature, O2 and CO2 concentrations outside and inside a partially diffused microclimatic chamber, net ecosystem exchange, photosynthetic quotient, and the produced O2 and assimilated CO2 for the light-dependent photosynthetic reaction. It also contains the week no., day, humidity, temperature, O2 and CO2 concentrations outside and inside the chamber, net ecosystem exchange, thermal sensitivity Q1, and the produced and assimilated CO2 and O2 during the dark-period respiration. Sheet 2 (GDD) contains temperature variances, growing degree day values, thermal ratio (max/min), and the photothermal unit. Sheet 3 (FMT_EWT) contains the measured and RNN-predicted full moisture content and equivalent water thickness as metrics of leaf moisture stress. Sheet 4 (PCSI) contains minor and major axis length and the resulting plant canopy shape index per plant from week 1 to week 6 of cultivation. Sheet 5 (VI) contains the RGB, MGVRI, GLI, MPRI, RGBVI, ExG, and VEG as optical vegetative stress indices. Sheet 6 (SUMMARY) contains the established parameter ranges for vegetative, head development, and harvest stages of aquaponic lettuce
Data for chlorophyll and anthocyanin dyes combination optimization using evolutionary computing
No full textThe uploaded file has six tabs pertaining to dye concentration optimization and characterizations. Tab 1 (AM1.5) presents the short-circuit current, open-circuit voltage, fill factor, efficiency, power, and cell resistance of the 9 fabricated DSSCs. Tab 2 (AM1.5 range) presents the photocurrent and power generated through voltage sweeping from -2 to 0 V. Tab 3 (Optimization) presents the characterization of selection rate, mutation rate, and crossover rate of genetic algorithm and evolutionary strategy in determining the fitness value and the best solution for green and violet dye concentrations that will give the maximum possible power efficiency. Tab 4 (FTIR) presents the raw data spectral analysis in the 4000 to 500 cm-1 range. Tab 5 (UV-Vis absorbance) presents the spectral absorbance of each dye combination without the optimization yield and the photon energy and absorption coefficient of dyes data. And Tab 6 (Stability) presents the 21-day stability test of pure green, pure violet, GA-based, and ES-based dyes without thermoplastic Surlyn jacket
Maize root behavior as three-inputs-three-outputs logical gates due to positive gravitropism and nutritropism
No full textRoot growth and their interactions can provide valuable information for the development of asynchronous logic systems. Here, maize root behavior due to positive gravitropism and nutritropism is evaluated as three-inputs-three-outputs logical gates. Using plant roots as the element for unconventional computing, the Boolean functions of each root tropism were constructed through arithmetic-logical operations. One gravity gate (rGG) and two nutrient gates (rNG1 and rNG2) were fabricated using additive manufacturing. The rGG platform was oriented with roots directly pulled down by gravity which computes (x, y, z) = (xz + yz, x + y ̄z+yz ̄, xy + yz), whereas specific output channels in rNG1 and rNG2 were fertigated with high phosphorus concentration resulting in (x, y, z) = (x + y + z, xy + xz, xyz) for rNG1 and (x, y, z) = (xyz, xy ̄z+xyz ̄, x + y + z) for rNG2. For rGG, rNG1, and rNG2, the symbols x, y, and z pertain to "root presence" in the related channel, whereas top bar on the symbols indicates "root absence". Anatomical traits of roots were evaluated to assess possible differences in vascular tissues due to gravitropic and nutritropic responses. Overall, maize primary roots showed prominent positive gravitropism and nutritropism, and the roots that were most attracted by gravitational or nutritional stimuli showed an increase in the diameter of phloem and xylem. The logic exhibited by roots was dependent on the gravitropic and nutritropic stimuli to which they were exposed in the different logic gates. The responsiveness of maize roots to environmental stimuli such as gravity and nutrients provided valuable information to be used in computational bioelectronics
Design of a Hypergravity Simulation Platform with Speed and Axis Stability Control Systems
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Machine learning-based classification of corn seed viability using electrical impedance spectroscopy
No full textCorn (Zea mays L.), an essential global commodity, plays an ever-increasing role in agri-food systems. To support growing demand, rapid and noninvasive methods for determining seed germination rates are crucial alongside invasive techniques such as dissection, germination paper tests, and chemical assays. This study introduces electrical impedance spectroscopy (EIS) as a novel, non-invasive approach for classifying viable and non-viable corn seeds. Non-viable corn seeds were prepared by exposing them to 100 °C convection heat for 30 minutes. Impedance spectra were measured using the EVAL-AD5933EBZ evaluation board from 400 kHz to 1 MHz frequency range within 30 seconds. Furthermore, a comparison of six optimized supervised machine learning (ML) algorithms, including shallow and deep networks, was performed, setting this apart from other studies. The trained model was deployed to assess the viability of new seed samples effectively. Key impedance metrics, including their frequencies, were extracted to train and test the algorithms. The regression tree (RTree) model outperformed deep learning classifiers, achieving 95% accuracy, 90% precision, and 100% sensitivity. The results indicated an upward trend in viable seed impedance, increasing by 0.000164 Ω/Hz, peaking at 990 kHz. This approach offers a rapid, non-invasive solution for seed viability assessment, with significant potential to enhance agricultural productivity
Non-destructive in Situ measurement of aquaponic lettuce leaf photosynthetic pigments and nutrient concentration using hybrid genetic programming
No full textPhytopigment and nutrient concentration determination normally rely on laboratory chemical analysis. However, non-destructive and onsite measurements are necessary for intelligent closed environment agricultural systems. In this study, the impact of photosynthetic light treatments on aquaponic lettuce leaf canopy (Lactuca sativa var. Altima) was evaluated using UV-Vis spectrophotometry (300-800 nm), fourier transform infrared spectroscopy (4000-500 per cm), and the integrated computer vision and computational intelligence. Hybrid decision tree and multigene symbolic regression genetic programming (DT-MSRGP) exhibited the highest predictive accuracies of 80.9%, 89.9%, 83.5%, 85.5%, 81.3%, and 83.4% for chlorophylls a and b, β-carotene, anthocyanin, lutein, and vitamin C concentrations present in lettuce leaf canopy based on spectro-textural-morphological signatures. An increase in β-carotene and anthocyanin concentrations verified that these molecular pigments act as a natural sunscreen to protect lettuce from light stress and an increase in chlorophylls a and b ratio in the white light treatment corresponds to reduced emphasis on photon energy absorbance in chloroplast photosystem II. Red-blue light induces chlorophyll b concentration while white light promotes all other pigments and vitamin C. It was confirmed that the use of the DT-MSRGP model is essential as the concentration of phytopigment and nutrients significantly change during the head development and harvest stages
South Pacific Diary, 1942-1943
No full textA unique chronicle of the war from the perspective of a sensitive twenty-four-year-old sergeant who wrote for the Army’s in-house paper, Yank, the Army Weekly and a tale of the South Pacific that will not soon be forgotten. Correspondent Mack Morriss reluctantly left his diary in the Honolulu Yank office in July 1943. “Here is contained an account of the past eight and one-half months,” he wrote in his last entry, “a period which I shall never forget.” The next morning he was on a plane headed back to the South Pacific and the New Georgia battleground.
Morriss was working out of the press camp at Spa, Belgium, in January 1945, when he learned that the diary he had kept in the South Pacific had arrived in a plain brown wrapper at the New York office. He was so happy “to know that this impossible thing had happened,” he wrote to his wife, that he helped two friends “murder a quart of scotch.” What was preserved and appears in print here for the first time is a unique chronicle of the war in the South Pacific from the perspective of a sensitive twenty-four-year-old sergeant.
This is an intensely personal account, reporting the war from the ridge known as the Sea Horse on Guadalcanal, from the bars and dance halls of Auckland to a B-17 flying through the moonlit night to bomb Japanese installations on Bougainville. Morriss thought deeply and wrote movingly about everything connected with the war: the sordiness and heroism, the competence and ineptitude of leaders, the strange mixture of constant complaint and steady courage of ordinary GIs, friendships formed under combat stress, and, above all, what he perceived to be his own indecisiveness and weaknesses.
Ronnie Day introduces Morriss’s diary and illuminates the work with extensive notes based on private papers, government documents, travel in the Solomon Islands, and the recollections of men mentioned in the diary.
Mack Morriss, author of The Proving Ground, a novel based on his wartime experiences, died in 1975.
Ronnie Day is professor and chair of the Department of History at East Tennessee State University.
Lively, colorful, and simply and forcefully written. It is a personal journey, giving not only an account of the battles but also of the life in the barracks and bars. —Knoxville News-Sentinel
Beautifully edited, this diary provides a detailed look at a very introspective World War II reporter. —Register of the Kentucky Historical Societyhttps://uknowledge.uky.edu/upk_united_states_history/1102/thumbnail.jp
"The Community Reinvestment Act, Lending Discrimination, and the Role of Community Development Banks"
No full textThe Community Development Banks (CDBs) should not be seen as a substitute for the Community Reinvestment Act (CRA) or for other programs designed to revitalize lower income areas. Rather, they should be seen as a complement for existing programs and for other programs that will be proposed by the Clinton administration. As discussed above, the CRA process ensures that a dialogue takes place among regulators, financial institutions, and served communities: it ensures that banks identify their communities and that they satisfy some of the needs of these communities. Moreover, it helps to expand the awareness of bankers such that their expectations about presently undeserved areas are revised. It is unrealistic to expect that any financial institution can meet all the needs of any community; this, there is a role for a CDB to play in some communities that supplements the role played by traditional financial institutions. Similarly, while we believe that CDBs have an important role to play in revitalizing low income communities, we certainly do not see these as a substitute for the wide range of programs (both public and private) that will be needed to reverse long trends of deterioration experienced by some distressed communities. Finally, the CDBs are not intended to be welfare programs but to provide services to the community's residents, and consequently, they must meet the long-run market tests of profitability. Aside from the service aspect, community development banks will: (i)improve the well-being of our citizens not now served because of unresponsive, yet traditional loan qualification norms, and (ii) directly increase the opportunities for potential entrepreneurs and potential employees. The basic assumption underlying the community development bank is that all areas of the country need banks that are clearly oriented toward the small customer: households that have a small net worth, a small IRA account, and a small transactions account, and businesses that need financing measured in thousands rather then millions or billions of dollars.
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