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Isomeric ratio of the ^(181)Ta(γ,3n)^(178m,g)Ta reaction products at energy Eγmax up to 95 Mev

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Chinese Physics C 2022年第1期46卷 102-109页

作者： O.S.Deiev I.S.Timchenko S.N.Olejnik v.a.kushnir v.v.Mytrochenko S.A.Perezhogin National Science Center"Kharkiv Institute of Physics and Technology" 1 Akademicheskaya St.61108 KharkivUkraine

The photoneutron reaction^(18)Ta(y,3m)(178m,g)Ta was investigated with the beam from the NSC KIPT electron linear accelerator *** measurements were performed using the residual y-activity *** bremsstrahlung flux-averaged cross sections((E_(γmax))>.(r(E_(γmax))>m.values of the averaged cross-sections and isomeric ratio were calculated using the partial cross-sections from the TALYS1.95 code for different level density models LD 1-6..The obtained experimental d(E_(γmax))agree with the data in the lterature,but differ from the theoretical values in ab-solute magnitude and the behavior of the energy dependence.A comparison of the determined averaged cross-sec-tions with the calculated cross sections showed the best agreement for the case of the LD 5 model.

关键词： bremsstrahlung flux-averaged cross-section isomeric ratio bremsstrahlung end-point energy of 35-95 Mev activation and off-line 7-ray spectrometric technique TALYS1.95 GEANT4.9.2

Cross-sections of photonuclear reactions ^(65)Cu(γ, n)^(64)Cu and ^(63)Cu(γ, xn)^(63−x)Cu in the energy range E_(γmax) = 35–94 Mev

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Chinese Physics C 2022年第12期46卷 208-216页

作者： O.S.Deiev I.S.Timchenko S.M.Olejnik S.M.Potin v.a.kushnir v.v.Mytrochenko S.A.Perezhogin B.I.Shramenko National Science Center“Kharkov Institute of Physics and Technology” 1Akademichna St.61108KharkivUkraine

The flux-averaged cross-sectionsfor the reactions^(65)Cu(γ,n)^(64)Cu,^(63)Cu(γ,n)^(62)Cu,^(63)Cu(γ,2n)^(61)Cu,and^(63)Cu(γ,3n)^(60)Cu have been measured within the bremsstrahlung end-point energy E_(γmax)range of 35–94 *** experiments were performed with the electron beam from the NSC KIPT linear accelerator LUE-40 with the use of the activation and off-lineγ-ray spectrometric *** calculation of the flux-average cross-sections_(th)was conducted using the cross-sectionσ(E)values from the TALYS1.95 code,run with default *** is shown that the experimental average cross-sections for the reactions^(65)Cu(γ,n)^(64)Cu,^(63)Cu(γ,n)^(62)Cu,and^(63)Cu(γ,2n)^(61)Cu are systematically higher than the theoretical estimates based on the TALYS1.95 *** obtainedvalues supplement the data of different laboratories for the(γ,n)and(γ,2n)reactions of^(63)Cu and^(65)*** the reaction^(63)Cu(γ,3n)^(60)Cu,the values ofwere measured for the first time.

关键词： ^(63)Cu ^(65)Cu photonuclear reactions flux-averaged cross-section bremsstrahlung end-point energies of 35-94 Mev activation and off-lineγ-ray spectrometric techniques TALYS1.95 GEANT4

Isomeric pair 95m,g Nb in the photonuclear reactions on natMo at the bremsstrahlung end-point energy of 38–93 Mev

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Chinese Physics C 2023年第12期47卷 64-72页

作者： I.S.Timchenko O.S.Deiev S.M.Olejnik S.M.Potin v.a.kushnir v.v.Mytrochenko S.A.Perezhogin v.A.Bocharov Institute of Physics Slovak Academy of SciencesSK-84511 BratislavaSlovakia National Science Center"Kharkov Institute of Physics and Technology" 1Akademichna St.61108KharkivUkraine CNRS/IJCLAB 15 Rue Georges Clemenceau Str.Orsay91400France

The ^(nat)Mo(γ,xnp)^(95m,g)Nb photonuclear reaction was studied using the electron beam from the NSC KIPT linear accelerator *** experiment was performed using the activation and off-line γ-ray spectrometric *** experimental isomeric yield ratio(IR) was determined for the reaction products ^(95m,g)Nb at the bremsstrahlung end-point energy E_(γmax) range of 38-93 *** obtained values of IR are in satisfactory agreement with the results of other studies and extend the range of previously known *** theoretical values of the yields Y_(m,g)(E_(γmax)) and the IR for the isomeric pair ^(95m,g)Nb from the ^(nat)Mo(γ,xnp) reaction were calculated using the partial cross-sections σ(E) from the TALYS1.95 code for six different level density *** the investigated range of E_(γmax),the theoretical dependence of IR on energy was confirmed-the IR smoothly increases with increasing *** comparison showed a noticeable difference(more than 3.85 times) in the experimental IR relative to all theoretical estimates.

关键词： photonuclear reactions natMo isomeric pair 95m gNb isomeric yield ratio reaction yield bremsstrahlung end-point energy of 38–93 Mev activation and off-lineγ-ray spectrometric technique TALYS1.95 level density model GEANT4.9.2.

Methods and Means for Small Dynamic Objects Recognition and Tracking

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Computers, Materials & Continua 2022年第11期73卷 3649-3665页

作者： Dmytro kushnir Department of Computer Engineering Lviv Polytechnic National UniversityLviv79013Ukraine

A literature analysis has shown that object search,recognition,and tracking systems are becoming increasingly ***,such systems do not achieve high practical results in analyzing small moving living objects ranging from 8 to 14 *** article examines methods and tools for recognizing and tracking the class of small moving objects,such as *** fulfill those aims,a customized You Only Look Once Ants Recognition(YOLO_AR)Convolutional Neural Network(CNN)has been trained to recognize Messor Structor ants in the laboratory using the LabelImg object marker *** proposed model is an extension of the You Only Look Once v4(Yolov4)512×512 model with an additional Self Regularized Non–Monotonic(Mish)activation ***,the scalable solution for continuous object recognizing and tracking was *** solution is based on the OpenDatacam system,with extended Object Tracking modules that allow for tracking and counting objects that have crossed the custom boundary *** the study,the methods of the alignment algorithm for finding the trajectory of moving objects were modified.I discovered that the Hungarian algorithm showed better results in tracking small objects than the K–D dimensional tree(k-d tree)matching algorithm used in ***,such an algorithm showed better results with the implemented YOLO_AR model due to the lack of False Positives(FP).Therefore,I provided a new tracker module with a Hungarian matching algorithm verified on the Multiple Object Tracking(MOT)***,additional customization parameters for object recognition and tracking results parsing and filtering were added,like boundary angle threshold(BAT)and past frames trajectory prediction(PFTP).Experimental tests confirmed the results of the study on a mobile *** the experiment,parameters such as the quality of recognition and tracking of moving objects,the PFTP and BAT,and the configuration parameters of the neural network an

关键词： Object detection artificial intelligence object tracking object counting small movable objects ants tracking ants recognition YOLO_AR Yolov4 Hungarian algorithm k-d tree algorithm MOT benchmark image labeling movement prediction

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应用小台阵资料对统计最佳事件检测的研究

世界地震译丛 2000年第3期31卷 14-24页

作者： A.F.kushnir v.M.Lapshin v.I.Pinsky J.Fyen 黄金莉中国地震局分析预报中心

介绍了检测和估计地震信号的Capon最大似然技术。通过采用地震台阵噪声的多维自回归近似,提出了一项用Capon的多通道滤波技术作为在线处理。结果表明,这种适用于通用噪声矩阵功率谱的自回归方法能很好地抑制互相关台阵噪声。作为一个例... 详细信息

介绍了检测和估计地震信号的Capon最大似然技术。通过采用地震台阵噪声的多维自回归近似,提出了一项用Capon的多通道滤波技术作为在线处理。结果表明,这种适用于通用噪声矩阵功率谱的自回归方法能很好地抑制互相关台阵噪声。作为一个例子,用这项技术对ARCESS台阵得到的塞米巴拉金斯克小当量地下核爆炸记录进行了检测。

关键词：工程地震核爆炸地震信号事件检测小台阵资料