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Artykuły w czasopismach na temat "Adjacency Independent Row"
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Keilson, J., i M. Zachmann. "Homogeneous row-continuous bivariate markov chains with boundaries". Journal of Applied Probability 25, A (1988): 237–56. http://dx.doi.org/10.2307/3214160.
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The matrix-geometric results of M. Neuts are extended to ergodic row-continuous bivariate Markov processes [J(t), N(t)] on state space B = {(j, n)} for which: (a) there is a boundary level N for N(t) associated with finite buffer capacity; (b) transition rates to adjacent rows and columns are independent of row level n in the interior of B. Such processes are of interest in the modelling of queue-length for voice-data transmission in communication systems.One finds that the ergodic distribution consists of two decaying components of matrix-geometric form, the second induced by the finite buffer capacity. The results are obtained via Green's function methods and compensation. Passage-time distributions for the two boundary problems are also made available algorithmically.
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Keilson, J., i M. Zachmann. "Homogeneous row-continuous bivariate markov chains with boundaries". Journal of Applied Probability 25, A (1988): 237–56. http://dx.doi.org/10.1017/s0021900200040390.
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The matrix-geometric results of M. Neuts are extended to ergodic row-continuous bivariate Markov processes [J(t), N(t)] on state space B = {(j, n)} for which: (a) there is a boundary level N for N(t) associated with finite buffer capacity; (b) transition rates to adjacent rows and columns are independent of row level n in the interior of B. Such processes are of interest in the modelling of queue-length for voice-data transmission in communication systems. One finds that the ergodic distribution consists of two decaying components of matrix-geometric form, the second induced by the finite buffer capacity. The results are obtained via Green's function methods and compensation. Passage-time distributions for the two boundary problems are also made available algorithmically.
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Adler, André. "Limit theorems for randomly selected adjacent order statistics from a Pareto distribution". International Journal of Mathematics and Mathematical Sciences 2005, nr 21 (2005): 3427–41. http://dx.doi.org/10.1155/ijmms.2005.3427.
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Consider independent and identically distributed random variables{Xnk, 1≤k≤m, n≥1}from the Pareto distribution. We randomly select two adjacent order statistics from each row,Xn(i)andXn(i+1), where1≤i≤m−1. Then, we test to see whether or not strong and weak laws of large numbers with nonzero limits for weighted sums of the random variablesXn(i+1)/Xn(i)exist, where we place a prior distribution on the selection of each of these possible pairs of order statistics.
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Wu, Pu, Zepeng Li, Zehui Shao i Seyed Mahmoud Sheikholeslami. "Trees with equal Roman {2}-domination number and independent Roman {2}-domination number". RAIRO - Operations Research 53, nr 2 (6.03.2019): 389–400. http://dx.doi.org/10.1051/ro/2018116.
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A Roman {2}-dominating function (R{2}DF) on a graph G =(V, E) is a function f : V → {0, 1, 2} satisfying the condition that every vertex u for which f(u) = 0 is adjacent to either at least one vertex v with f(v) = 2 or two vertices v1, v2 with f(v1) = f(v2) = 1. The weight of an R{2}DF f is the value w(f) = ∑u∈Vf(u). The minimum weight of an R{2}DF on a graph G is called the Roman {2}-domination number γ{R2}(G) of G. An R{2}DF f is called an independent Roman {2}-dominating function (IR{2}DF) if the set of vertices with positive weight under f is independent. The minimum weight of an IR{2}DF on a graph G is called the independent Roman {2}-domination number i{R2}(G) of G. In this paper, we answer two questions posed by Rahmouni and Chellali.
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MITSUSHIO, Masaru, i Toshifumi YOSHIDOME. "Development of a Gold-deposited Square Glass Rod Sensor Capable of Independent and Simultaneous Measurements on Two Adjacent Faces". BUNSEKI KAGAKU 71, nr 4.5 (5.04.2022): 261–67. http://dx.doi.org/10.2116/bunsekikagaku.71.261.
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Cabral, Oscar Manuel de Jesús Vera, Eduardo da Silva Lopes, Carla Krulikowski Rodrigues i Afonso Figueiredo Filho. "Impact of Distance between Strip Roads on Productivity and Costs of a Forwarder in Commercial Thinning of Pinus Taeda Stands". Croatian journal of forest engineering 41, nr 2 (8.04.2020): 243–49. http://dx.doi.org/10.5552/crojfe.2020.592.
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Demand for higher value-added wood products stimulates research for new, mainly mechanized, thinning operations in order to increase productivity and reduce production costs. In this context, the aim of this study was to evaluate the impact of distance between strip roads on forwarder productivity and costs of thinning operations in Pinus taeda stands. The study was carried out in 10-year-old Pinus taeda stands located in Parana State, Brazil. Two thinning methods were evaluated: (1) TH5: systematic harvest in every fifth tree row and selective harvest in adjacent rows; and (2) TH7: systematic harvest in every seventh tree row and selective harvest in adjacent rows. Working cycle times, productivity and costs were determined through a time-motion study of the forwarder. The additional variables evaluated were wood assortments (industrial wood and energy wood) and extraction distances (50, 100, 150 and 200 m), and mean values were compared between thinning methods using t tests for independent samples (α=0.05). Loading and unloading elements consumed the most time in the working cycle, with lower participation time in TH7 due to greater availability of logs along the strip roads (higher pile volumes), influencing total cycle time up to the mean distance of 150 m for both assortments. TH7 consequently showed 6% higher productivity, its energy yield was 5.3% lower and its production cost was 3.0% lower.
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Goicoechea, P. G., A. Roca, A. R. Linde, T. Naranjo i R. Giraldez. "Independent arrangement of bivalents and (or) quadrivalents in linear meiotic metaphase plates of rye". Genome 34, nr 3 (1.06.1991): 421–29. http://dx.doi.org/10.1139/g91-064.
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The relative positioning of bivalents and (or) quadrivalents in flattened lateral views of metaphase I (linear metaphase plates) has been analyzed in three different plant types of rye: normal plants (type 1); heterozygotes for translocation T305W (type 2); and double heterozygotes for translocations T305W and TR01 (type 3). In all plant types all bivalents and (or) quadrivalents were identified using C-banding. The results indicate that quadrivalents show a preference towards being located in marginal positions of the linear plate, and there are also differences in position preferences between specific bivalents. Adjacently oriented quadrivalents and rod bivalents show a stronger preference for marginal positions than alternate quadrivalents and ring bivalents, respectively, but this does not indicate the existence of a fixed or ordered arrangement of chromosomes in the spindle since bivalents and (or) quadrivalents are independently located relative to each other.Key words: Secale, meiosis, metaphase, arrangement, multivalents, bivalents.
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Kocić, Gordana, Jovan Hadzi-Djokić, Andrej Veljković, Stefanos Roumeliotis, Ljubinka Janković-Veličković i Andrija Šmelcerović. "Template-Independent Poly(A)-Tail Decay and RNASEL as Potential Cellular Biomarkers for Prostate Cancer Development". Cancers 14, nr 9 (29.04.2022): 2239. http://dx.doi.org/10.3390/cancers14092239.
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The post-transcriptional messenger RNA (mRNA) decay and turnover rate of the template-independent poly(A) tail, localized at the 3′-untranslated region (3′UTR) of mRNA, have been documented among subtle mechanisms of uncontrolled cancer tissue growth. The activity of Poly(A) deadenylase and the expression pattern of RNASEL have been examined. A total of 138 prostate tissue specimens from 46 PC patients (cancer specimens, corresponding adjacent surgically healthy tissues, and in their normal counterparts, at least 2 cm from carcinoma) were used. For the stratification prediction of healthy tissue transition into malignant phenotype, the enzyme activity of tumor-adjacent tissue was considered in relation to the presence of microfocal carcinoma. More than a four-times increase in specific enzyme activity (U/L g.prot) was registered in PC on account of both the dissociation of its inhibitor and genome reprogramming. The obtained ROC curve and Youden index showed that Poly(A) deadenylase identified PC with a sensitivity of 93.5% and a specificity of 94.6%. The RNASEL expression profile was raised significantly in PC, but the sensitivity was 40.5% and specificity was 86.9%. A significantly negative correlation between PC and control tissue counterparts with a higher expression pattern in lymphocyte-infiltrated samples were reported. In conclusion, significantly upregulated Poly(A) deadenylase activity may be a checkpoint for the transition of precancerous lesion to malignancy, while RNASEL may predict chronic inflammation.
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Yan, Ning, Cong Liu, Fang Tian, Ling Wang, Yimin Wang, Zhaoying Yang, Yan Jiao i Miao He. "Downregulated mRNA Expression of ZNF385B Is an Independent Predictor of Breast Cancer". International Journal of Genomics 2021 (3.02.2021): 1–13. http://dx.doi.org/10.1155/2021/4301802.
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Background. ZNF385B, a zinc finger protein, has been known as a potential biomarker in some neurological and hematological studies recently. Although numerous studies have demonstrated the potential function of zinc finger proteins in tumor progression, the effects of ZNF385B in breast cancer (BC) are less studied. Methods. The Oncomine database and “ESurv” tool were used to explore the differential expression of ZNF385B in pan-cancer. Furthermore, data of patients with BC were downloaded from The Cancer Genome Atlas (TCGA). The receiver operating characteristic (ROC) curve of ZNF385B expression was established to explore the diagnostic value of ZNF385B and to obtain the cut-off value of high or low ZNF385B expression in BC. The chi-square test as well as Fisher exact test was used for identification of the relationships between clinical features and ZNF385B expression. Furthermore, the effects of ZNF385B on BC patients’ survival were evaluated by the Kaplan-Meier and Cox regression. Data from the Gene Expression Omnibus (GEO) database were employed to validate the results of TCGA. Protein expression of ZNF385B in BC patient specimens was detected by immunohistochemistry (IHC) staining. Results. ZNF385B expression was downregulated in most types of cancer including BC. Low ZNF385B expression was related with survival status, overall survival (OS), and recurrence of BC. ZNF385B had modest diagnostic value, which is indicated by the area under the ROC curve ( AUC = 0.671 ). Patients with lower ZNF385B expression had shorter OS and RFS (relapse-free survival). It had been demonstrated that low ZNF385B expression represented independent prognostic value for OS and RFS by multivariate survival analysis. The similar results were verified by datasets from the GEO database as well. The protein expression of ZNF385B was decreased in patients’ samples compared with adjacent tissues by IHC. Conclusions. Low ZNF385B expression was an independent predictor for worse prognosis of BC patients.
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Humphreys, Tom, i Philip S. Marcus. "Vortex Street Dynamics: The Selection Mechanism for the Areas and Locations of Jupiter’s Vortices". Journal of the Atmospheric Sciences 64, nr 4 (1.04.2007): 1318–33. http://dx.doi.org/10.1175/jas3882.1.
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Abstract With the exception of the Great Red Spot, Jupiter’s long-lived vortices are not isolated, but occur in east–west rows. Each row is centered about a westward-going jet stream with anticyclones on the poleward side and cyclones on the equatorial. Vortices are staggered so that like-signed vortices are never longitudinally adjacent. These double rows of vortices, called here Jovian vortex streets (JVSs) are robust. Calculations with no forcing and no dissipation (i.e., Hamiltonian dynamics) allow a continuum of JVS solutions, so they cannot be used to determine the physics that selects the observed values of the areas, circulations, and locations of Jupiter’s vortices. Constraints imposed by stability put few bounds on these values. When small amounts of dissipation and forcing are added to the governing equations, there is no longer a continuum of solutions; an initial JVS that was a solution of the Hamiltonian equations is now out of equilibrium and evolves to an attractor. For fixed forcing, all initial JVS evolve to the same attractor, so that the area of the vortices in the late-time JVS is selected uniquely as is the separation width in latitude between the row of cyclones and row of anticyclones. The separation width of the attracting JVS is nearly independent of the forcing, but the areas of the vortices in the attracting JVS depend strongly on the strength of the forcing, which is a measure of the ambient Jovian turbulence. Results are compared with observations.
Rozprawy doktorskie na temat "Adjacency Independent Row"
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Mahesh, Babu Vaddi. "Adjacent Independent Row (Air) Matrices and Index Coding". Thesis, 2018. https://etd.iisc.ac.in/handle/2005/5406.
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An index coding problem, comprises a transmitter that has a set of independent
messages and a set of receivers. Each receiver knows a subset of messages, called
its side-information, and demands another subset of messages, called its want-set.
The transmitter can take cognizance of the side-information of the receivers and
broadcast coded messages, called the index code, over a noiseless channel. The
objective is to minimize the number of coded transmissions, called the length of the
index code, such that each receiver can decode its wanted messages using its sideinformation
and the coded messages. An index coding problem is single unicast if
the want-sets of the receivers are disjoint and the cardinality of want-set of every
receiver is one. In a single unicast index coding problem, we have equal number of
messages and receivers. A single unicast index coding problem is called symmetric
if the side-information of the receivers is symmetric with respect to their wanted
message. Motivated with topological interference management problems, Maleki,
Cadambe and Jafar studied the symmetric index coding problems. This thesis
deals with the symmetric index coding problems and present some interesting
results.
In this work, we construct binary matrices of size m × n such that any n
adjacent rows of the matrix are linearly independent over every finite field for any
arbitrary positive integers m and n (m ≥ n). We call these matrices as Adjacency
Independent Row (AIR) matrices. We derive combinatorial properties of AIR
matrices.
We use AIR matrices to construct optimal or near-optimal index codes for various
symmetric settings. By using the combinatorial properties of AIR matrices,
we give a simple low-complexity decoding procedure for the constructed optimal
or near-optimal index codes. By using this decoding procedure, we give a reduced set of side-information required by each receiver to decode its wanted message. We
also derive bounds on the broadcast rate of two well known classes of symmetric
settings and derive the capacity for some special cases of the same.
The interlinked cycle (IC) structure, that generalizes cycles and cliques was
defined by Thapa, Ong and Johnson. Interlinked-cycle-cover (ICC) scheme that
leverages IC structures as side-information graphs to construct scalar linear index
codes was proposed. A class of infinitely many digraphs, where the proposed
scalar linear codes based on ICC scheme are optimal were characterized. Thapa
et. al. conjectured that for any IC structure, the ICC scheme is optimal. It was
also conjectured that for any digraph, the ICC scheme performs at least as well as
the partial-clique-cover scheme. In this work, we disprove both the conjectures.
We provide an addition to the class of IC structures by providing optimal length
index codes for IC structures with one cycle among non-inner vertex set.
Streszczenia konferencji na temat "Adjacency Independent Row"
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Haldeman, Charles W., Michael G. Dunn, John W. Barter, Brian R. Green i Robert F. Bergholz. "Experimental Investigation of Vane Clocking in a One and 1/2 Stage High Pressure Turbine". W ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53477.
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Aerodynamic measurements were acquired on a modern single-stage, transonic, high-pressure turbine with the adjacent low-pressure turbine vane row (a typical civilian one and one-half stage turbine rig) to observe the effects of low-pressure turbine vane clocking on overall turbine performance. The turbine rig (loosely referred to in this paper as the stage) was operated at design corrected conditions using the Ohio State University Gas Turbine Laboratory Turbine Test Facility (TTF). The research program utilized uncooled hardware in which all three airfoils were heavily instrumented at multiple spans to develop a full clocking dataset. The low-pressure turbine vane row (LPTV) was clocked relative to the high-pressure turbine vane row (HPTV). Various methods were used to evaluate the influence of clocking on the aeroperformance (efficiency) and the aerodynamics (pressure loading) of the LPTV, including time-resolved and time-averaged measurements. A change in overall efficiency of approximately 2–3% due to clocking effects is demonstrated and could be observed using a variety of independent methods. Maximum efficiency is obtained when the time-average surface pressures are highest on the LPTV and the time-resolved surface pressure (both in the time domain and frequency domain) show the least amount of variation. The overall effect is obtained by integrating over the entire airfoil, as the three-dimensional effects on the LPTV surface are significant. This experimental data set validates several computational research efforts that suggested wake migration is the primary reason for the perceived effectiveness of vane clocking. The suggestion that wake migration is the dominate mechanism in generating the clocking effect is also consistent with anecdotal evidence that fully cooled engine rigs do not see a great deal of clocking effect. This is consistent since the additional disturbances induced by the cooling flows and/or the combustor make it extremely difficult to find an alignment for the LPTV given the strong 3D nature of modern high-pressure turbine flows.
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Baldauf, S., M. Scheurlen, A. Schulz i S. Wittig. "Correlation of Film Cooling Effectiveness From Thermographic Measurements at Engine Like Conditions". W ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30180.
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Adiabatic film cooling effectiveness on a flat plate surface downstream of a row of cylindrical holes is investigated. Highly resolved two dimensional surface data were measured by means of infrared thermography and carefully corrected for local conduction and radiation effects [1]. These locally acquired data are laterally averaged to give the streamwise distributions of the effectiveness. An independent variation of the flow parameters blowing rate, density ratio, and turbulence intensity as well as the geometrical parameters streamwise ejection angle and hole spacing is examined. The influences of these parameters on the laterally effectiveness is discussed and interpreted with the help of surface distributions of effectiveness and heat transfer coefficients presented in earlier publications [1, 2]. Besides the known jet in cross-flow behavior of coolant ejected from discrete holes, these data demonstrate the effect of adjacent jet interaction and its impact on jet lift-off and adiabatic effectiveness. In utilizing this large matrix of measurements the effect of single parameters and their interactions are correlated. The important scaling parameters of the effectiveness are shaped out during the correlation process and are discussed. The resulting new correlation is designed to yield the quantitatively correct effectiveness as a result of the interplay of the jet in crossflow behavior and the adjacent jet interaction. It is built modularly to allow for future inclusion of additional parameters. The new correlation is valid without any exception within the full region of interest, reaching from the point of the ejection to far downstream, for all combinations of flow and geometry parameters.
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Atif, Maimoon, i Fahad A. Al-Sulaiman. "Time Instant Optimization of a Heliostat Field Using a Heuristic Algorithm". W ASME 2014 8th International Conference on Energy Sustainability collocated with the ASME 2014 12th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/es2014-6566.
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Solar central receiver systems are viewed as one of the most promising concentrated solar power (CSP) technologies for power production, in which solar radiation is concentrated through large mirrors (heliostats) onto a central receiver. This is due to the fact that very high temperatures can be reached at the receiver and thus higher thermal efficiency can be achieved compared with other CSP technologies. Heliostat field layout optimization is an essential task for any solar central receiver system. In this paper, a heuristic algorithm, i.e. the differential evolution (DE), was employed to perform efficient optimization of the conventional radial staggered heliostat field layout using MATLAB. The model calculates all the required optical performance parameters at every step of the optimization process for each heliostat and consequently more reliable results are obtained as compared with many other optimization methods. Two cases were considered: one with single variable optimization and the other with multi-variable optimization. For the first case, the azimuthal spacing between the adjacent heliostats or the radial distance between the rows of heliostats were optimized independently and for the second case both of these variables were optimized simultaneously. Both cases were examined for high sun altitude angle and low altitude angle and a comparison study was performed between them to check their effect on the heliostat field efficiency. Finally, it was noted that varying the radial distance between the rows of the heliostats yields slightly better efficiency as compared with when optimizing the azimuthal spacing.
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Gabriela Ene, Alexandra, Carmen Mihai, Constantin Jomir i Mihaela Jomir. "Mathematical Models for the Assessment of the Composite Structures of Cylindrical Floating Elements Level of Performances, Used in Brackish Seas." W 14th International Conference on Applied Human Factors and Ergonomics (AHFE 2023). AHFE International, 2023. http://dx.doi.org/10.54941/ahfe1003522.
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The safety of life and navigation in the areas with high risk potential adjacent parts to the coast, the fight against pollution with oil fractions, as well as the protection of marine biodiversity, all represent the central objective of this research action. One of the critical points was to statistically assess and decide the performance level of the composite structures of the modular systems with a cylindrical form, designed for the sustainable development of biodiversity and aquatic ecosystems. For this purpose, a database that includes two independent variables related to the physical-mechanical/physical-chemical values of the used raw materials was created. There were considered 1000 values associated to the: i) mass per surface unit; ii) maximum breaking force in the warp; iii) elongation at break in the warp; iv) tearing force in the warp and batting; v) film type. Moreover, 800 values related to the raw material were included for the determination of the length density, resistance and elongation at break, torsion, resistance and elongation at the knot, resistance and elongation at the loop. Descriptive statistics were used for the: a) determination of the parameters that evidence the homogeneity degree of the analysed data; b) assessment of the coefficients of variability that demonstrate the extent to which the data groups are homogeneous or heterogeneous; c) histograms of each variable, which highlight the asymmetry of the distribution, with the predominance of frequencies or variables. The statistical data analysis enabled the prediction of the asymmetries of the data series, related to Skewness and Kurtosis. The links between the considered variables were established according to the values of the correlation coefficients for each of the composite structures studied. The regression equations were developed to express the influence on the resistance to tearing for the transverse/longitudinal system of: mass, resistance and elongation at break of the composite material and resistance to knot breaking of the yarn from composite matrix structure. It was shown that for the prediction of the value of the composite element’s resistance to tearing, the values of this characteristic in the warp should be preferentially considered. In the weft direction, the introduction of additional independent variables is necessary. The two tested variants of composite material were differentiated by the fibrous composition and structure of the reinforcement matrix, for the longitudinal and transversal systems (45//55%PES//PA6.6, ratio: 1:1/100//100 PES//PES, ratio 2:1). Four mathematical models that are approximately normally distributed and follow the cumulative percentage line described by the normal curve were created. The mathematical models demonstrated that, in the design stage, for dynamic conditions (impact factor 2.5), the tear resistance value should be considered in both systems.