Abstract The Single Shot MultiBox Detector (SSD) is one of the fastest detection algorithms. Although it has achieved good results in detection, also problem poor effect for small targets and occlusion between objects. Here, authors propose a new target method called single‐shot with multi‐scale feature fusion enhancement. introduce module, enhancement module efficient channel attention integrate them into original SSD algorithm to improve ability network extraction. Experimental on pascal...

Radiative lifetimes of 79 levels belonging to the 3d34s4p, 3d44p, 3d34s5p, 3d45p, and 3d34s4d configurations V i with energy from 26,604.807 46,862.786 cm−1 have been measured using time-resolved laser-induced fluorescence (TR-LIF) spectroscopy in laser-produced plasma. The lifetime values reported this paper are range 3.3–494 ns, uncertainties these measurements within ±10%. A good agreement was obtained previous data. HFR+CPOL calculations performed used combine calculated branching...

Natural radiative lifetimes for 60 excited levels of La i and ii were measured using time-resolved laser-induced fluorescence spectroscopy in plasma. The 40 i, the energy range from 24 507.87 to 52 030.4 cm−1, 20 ii, 26 414.01 56 035.70 this work. results 4.2 330 ns with uncertainties within 10 per cent. To our best knowledge, 34 17 are reported first time.

The radiative lifetime measurements using the time-resolved laser-induced fluorescence (TR-LIF) technique are reported for 34 levels of Y I between 27 824.50 and 50 254.0 cm−1, among which lifetimes first time. branching fraction (BF) based on emission spectrum a hollow cathode lamp (HCL) were performed 12 these levels, results 64 lines 274.250 670.063 nm obtained. By combining them with values, transition probabilities absolute oscillator strengths determined. strength in general good...

Radiative lifetimes for 14 odd-parity levels with the energy range between 31,654.79 and 47,184.52 cm−1 of Mo I have been measured using time-resolved laser-induced fluorescence technique. The lifetime values from 7.7 to 53.6 ns. Branching fraction measurements these were performed based on emission spectrum a hollow cathode lamp. By combining branching fractions, absolute transition probabilities oscillator strengths 130 transitions in wavelength extending 275.430 600.478 nm derived.

Branching fractions of 13 levels in Gd I and 12 II were experimentally determined based on the emission spectrum a hollow cathode lamp. In addition, transition probabilities oscillator strengths for 66 lines 74 derived from combination radiative lifetimes reported earlier literature branching obtained present paper.

Radiative lifetimes of 27 levels (27 041.751–38 434.97 cm−1) in Gd I and 130.397–45 394.925 II have been measured using the time-resolved laser-induced fluorescence method. Laser ablation was used to generate atoms ions on a plate. The lifetime values range from 4.0 90 ns with an uncertainty 5% or less. Of all results, our knowledge, 23 11 are reported for first time. Good agreement between results previous ones has achieved.

Branching fractions (BFs) of 64 spectral lines for 27 levels in Eu I were measured by the emission spectrum a hollow cathode lamp (HCL). The transition probabilities and oscillator strengths these determined using time-resolved laser-induced fluorescence technique to combine BFs with experimental radiative lifetimes relative reported literature.

The Landé gJ factors of 35 levels, and the radiative lifetimes 43 neutral chromium in energy range 23 305.0026 to 53 782.78 cm−1 were measured by time-resolved laser-induced fluorescence Zeeman quantum beat methods laser-ablation plasma. Good agreements between present results previous experimental values achieved for both lifetimes. are quite close those calculated under pure LS-coupling scheme. lifetime obtained 11.4 193 ns. To best our knowledge, 15 17 reported first time.

Radiative lifetimes for 30 even-parity levels in the 4f65d6s, 4f65d2 and 4f8 configurations with energy range between 34923.43 57388.87 cm−1 of Eu II were measured by time-resolved laser-induced fluorescence (TR-LIF) method. Branching fraction measurements seven performed based on emission spectrum a hollow cathode lamp. By combining branching fractions, absolute transition probabilities oscillator strengths 18 transitions derived. The obtained results compared published data, basically good...

Abstract The development and application of biodegradable mulching film is an efficient way to solve the “white pollution” farmland. In actual production, we found that mulch produced by different processing technology with same formula showed quite properties. Here, poly (butyleneadipate‐co‐terephthalate)/polylactide (PBAT/PLA) composite films two die/screw diameters eight blow‐up ratio were prepared extrusion blowing. Results increasing can significantly improve tensile strength at...

The magneto-optical Kerr effect (MOKE) for both Heusler type alloys (AuMnSb and AuMnSn) were studied using the full-potential linearized augmented plane-wave (FP-LAPW) method, based on density functional theory implemented in WIEN2k code. differences with previous calculations spectra have been found explicitly. At proper Lorentzian such as δ = 0.4 eV, calculated angle of AuMnSn reaches its maxima +0.3° near 0.6 eV and-0.5° at 5.2 respectively while MOKE AuMnSb exhibit less prominent Peaks...

Measuring shape of bubbles is very important in many industrial processes, because that its behavior the fluid closely related to morphology. Phase microscopy imaging (PMI) method one best useful methods this field. In paper, considering on PMI idea, it put out a new which improves an ordinary light microscope into dual function can do both and function. Its optical structure designed by using Mach-Zehnder interferometer be added platform microscope. A glass hole (bubble) used as sample...

In this work the total energy calculations on atomic geometry and chemisorption properties of Co(0001)/H surface are performed by using density-functional theory in approach projector-augmented wave (PAW) method. For a clean Co(0001) relaxations top three layers obtained. The adsorptions Hydrogen have been investigated periodicities p(1×1), p(1×2), p(2×2), (  )R30º combined with hcp hollow fcc sites. cases studied work, hydrogen occupies site preferably drawn from energies. these structures...

The transmission spectrum of a two-atom timed Dicke state is investigated in an open optical cavity. In the proposed system, two identical atoms are excited by external single photon field. this process, grasp different excitation phases for their spatial positions. For coupling strength and cavity, get coupled via cavity vacuum fields, they finally induce cosine-type quantum interference on splitting peaks spectrum. However, when one decoupled with cannot directly but must be mediated which...

In order to improve the classification accuracy of cell subsets, a telecentric system which is based on characteristics cell’s scattering designed. The irradiating and receiving light work collinearly in this system, optical efficiency back scatter increases twice origin by using special mirror. design parameters structures are given aberration theories software. performance signal collection analysised. When resolution 100lp/mm, MTF more than 0.17. stray effectively filtered out improved....

The phase images of cells and tissues are great importance for obtaining their morphological dynamics information. However, because the uniform optical path-length a light field passing through inhomogeneous whose nuclei’ shape structure different but with equivalent physical thickness, we can not identify subgroup just from images, since wrapped have similar shape. Thus put out new idea that uses scattering distributions as auxiliary criterion identifying nuclei structure. We built...