The Gongsaeng(貢生) figures in the Joseon dynasty’s latter half period - Nature of their existence, as well as their increase in numbers -

2019 ◽  
Vol 111 ◽  
pp. 255-286
Author(s):  
Sung-hak Jung
Keyword(s):  
Half Period

scholarly journals Chiral Floquet Systems and Quantum Walks at Half-Period

2021 ◽  
Author(s):  
C. Cedzich ◽  
T. Geib ◽  
A. H. Werner ◽  
R. F. Werner
Keyword(s):  
Quantum Walks ◽  
Half Period

scholarly journals Formation of half-period surface relief gratings in azobenzene containing polymer films

2020 ◽  
Vol 126 (9) ◽  
Author(s):  
Joachim Jelken ◽  
Carsten Henkel ◽  
Svetlana Santer
Keyword(s):  
Polymer Film ◽  
Polymer Films ◽  
Surface Relief ◽  
Incident Light ◽  
Glassy State ◽  
Polarized Light ◽  
Half Period ◽  
Polarization Distribution ◽  
Linearly Polarized ◽  
Set Up

Abstract We study the peculiar response of photo-sensitive polymer films irradiated with a certain type of interference pattern where one interfering beam is S-polarized, while the second one is P-polarized. The polymer film, although in a glassy state, deforms following the local polarization distribution of the incident light, and a surface relief grating (SRG) appears whose period is half the optical one. All other types of interference patterns result in the matching of both periods. The topographical response is triggered by the alignment of photo-responsive azobenzene containing polymer side chains orthogonal to the local electrical field, resulting in a bulk birefringence grating (BBG). We investigate the process of dual grating formation (SRG and BBG) in a polymer film utilizing a dedicated set-up that combines probe beam diffraction and atomic force microscopy (AFM) measurements, and permits acquiring in situ and in real-time information about changes in local topography and birefringence. We find that the SRG maxima appear at the positions of linearly polarized light (tilted by 45° relative to the grating vector), causing the formation of the half-period topography. This permits to inscribe symmetric and asymmetric topography gratings with sub-wavelength period, while changing only slightly the polarization of one of the interfering beams. We demonstrate an easy generation of sawtooth profiles (blazed gratings) with adjustable shape. With these results, we have taken a significant step in understanding the photo-induced deformation of azo-polymer films.

ANALYSIS OF TRENDS OF TOTAL EVAPORATION FLUXES (FOR 2003-2017) ACCORDING TO THE DATA OF PRODUCT MOD16A2 FOR THE TERRITORY OF THE MARKSOVSKY DISTRICT OF THE SARATOV REGION

2021 ◽  
pp. 16-25
Author(s):  
O. S. ERMOLAEVA ◽  
◽  
A. M. ZEYLIGER
Keyword(s):  
Time Series ◽  
Irrigation System ◽  
Growing Season ◽  
Half Period ◽  
Anthropogenic Factors ◽  
Time Interval ◽  
Total Evaporation ◽  
Saratov Region ◽  
Growing Seasons ◽  
Dominant Part

This paper presents the results of calculations of areal trends of total evaporation ETa fl uxes for the growing periods of 2003-2017 in the territory of the Marksovsky district of the Saratov region. Raster layers formed for the territory with a 500 m resolution of the Eta8 (Eta 8-day averaging) for each year of the investigated time interval were obtained from tiles sets h20v03 of the product MOD16A2 for the period from May 25 to September 2 of the corresponding year. As a result, the 19830 time series of total evaporation fl uxes for the ETaw growing seasons of the 15-year study period were drawn up for the Marksovsky district. The obtained time series of geodata of the actual evapotranspiration for the growing season ETaw for each of the 15 studied years were used for the spatial analysis of ETaw trends. For the analysis, the method of nonparametric Mann-Kendal statistics was used. It revealed the presence of 2 half-periods with diametrically opposite trends in the dominant part of time series. The fi rst half-period found out negative values (downward) trends and falls on 2003-2010, the second half-period showed positive (upward) trends for 2010-2017. The presented results of the spatial distribution of both trends indicate the presence of an infl uence on ETaw both distance from the bank of R. Volga and anthropogenic factors. Hypotheses for additional analysis are proposed. For the visual deciphering of the places of abnormal values of trends velocities of the both half-periods there were used space photos of high resolution. As a result it was marked that the location of these anomalies corresponded to the location of pivot sprinklers in the territory of the Privolzhskoj irrigation system.

scholarly journals Diffuse Coplanar Surface Barrier Discharge in Artificial Air: Statistical Behaviour of Microdischarges

2014 ◽  
Vol 13 (1) ◽  
Author(s):  
Jan Čech ◽  
Jana Hanusová ◽  
Pavel Sťahel ◽  
Mirko Černák
Keyword(s):  
High Speed ◽  
Barrier Discharge ◽  
Atmospheric Pressure Plasma ◽  
Input Voltage ◽  
Half Period ◽  
Surface Barrier ◽  
Electrical Measurements ◽  
Large Area ◽  
Electrode Gap ◽  
Surface Barrier Discharge

AbstractDiffuse Coplanar Surface Barrier Discharge (DCSBD) is a novel type of atmospheric-pressure plasma source developed for high-speed large-area surface plasma treatments. The statistical behavior of microdischarges of DCSBD generated in artificial air atmosphere was studied using time-correlated optical and electrical measurements. Changes in behavior of microdischarges are shown for various electrode gap widths and input voltage amplitudes. They are discussed in the light of correlation of the number of microdischarges and the number of unique microdischarges’ paths per discharge event.The ‘memory effect’ was observed in the behavior of microdischarges and it manifests itself in a significant number of microdischarges reusing the path of microdischarges from previous half-period. Surprisingly this phenomenon was observed even for microdischarges of the same half-period of the discharge, where mechanisms other than charge deposition have to be involved. The phenomenon of discharge paths reuse is most pronounced for wide electrode

scholarly journals Opportunities for the application of linear program­ming in forest management planning

2013 ◽  
pp. 175-191
Author(s):  
Damjan Pantic ◽  
Bojan Tubic ◽  
Marko Marinkovic ◽  
Dragan Borota ◽  
Snezana Obradovic
Keyword(s):  
Linear Programming ◽  
Maximum Yield ◽  
Half Period ◽  
Management Planning ◽  
Forest Management Planning ◽  
Conflicting Interests ◽  
Poplar Plantations ◽  
The One ◽  
Forest Practice ◽  
The U.S

In situations where it is necessary to consider a variety of options when making decisions in forestry (and in general), with the choice influenced by hardly comparable criteria and a number of conflicting interests, a possible solution is to use multiple criteria methods. One of these methods, which can be applied in forestry, is mathematical programming (in particular, linear programming). Linear programming has a long tradition of being used in the U.S. and European forestry, whereas in the forestry of Serbia it still represents a theoretically and practically unknown tool. Therefore, in this paper we analyze the possibility of applying the methods of linear programming in developing a plan of regeneration cutting in the poplar plantations of FMU "Topolik" managed by PE "Vojvodinasume." Using the aimed function (linear programming) and the corresponding software package the maximum yield that can be achieved by cutting the plantation was obtained. The planned management period was from 2012 to 2021 and its volume was 155 852 m3. The preset condition that the yield in half-periods remains equal was fulfilled (half-period I 77,925 m3, half-period II 77,927 m3). The maximum yield obtained with this methodology was by 4,040 m3 lower than the theoretically possible yield that would be obtained if all stands were cut down at the end of the second half-period, i.e. higher by 8,430 m3 than the yield that would be obtained if cutting of the stands were performed at the start of the management period. The results obtained and foreign experience in this area clearly indicate that linear programming can successfully be used to solve this problem and even more complex problems (than the one presented in this paper) in our local forest practice (multidimensional planning with a series of constraints).

scholarly journals Diffuse Coplanar Surface Barrier Discharge in Nitrogen: Microdischarges Statistical Behavior

10.14311/1731 ◽  
2013 ◽  
Vol 53 (2) ◽  
Author(s):  
Jan Cech ◽  
Jana Hanusova ◽  
Pavel Stahel ◽  
Pavel Slavicek
Keyword(s):  
High Voltage ◽  
Barrier Discharge ◽  
Input Voltage ◽  
Half Period ◽  
Surface Barrier ◽  
Storage Oscilloscope ◽  
Iccd Camera ◽  
Ignition Voltage ◽  
Surface Barrier Discharge ◽  
Statistical Behavior

We studied statistical behavior of microdischarges of diffuse coplanar surface barrier discharge (DCSBD) operated in nitrogen atmosphere at two input voltage regimes. We measured spectrally unresolved discharge patterns together with discharge electrical parameters using highspeed iCCD camera and digital storage oscilloscope. External synchronization enabled us to measure the discharge pattern during positive and/or negative half-period of input high voltage in the single-shotmode of operation. The comparison of microdischarges behavior during positive, negative and both half periods of input high voltage was performed for two levels of input voltage, i.e. voltage slightly above ignition voltage and high above ignition voltage (“overvoltage”). The number of microchannels crossing discharge gap was counted and compared with number of microdischarge current peaks observed during corresponding half-period of input high voltage. The relations of those incidences was shown and discussed.

558. The secretion of a single tracer dose of labelled iodide in the milk of the lactating cow

1954 ◽  
Vol 21 (3) ◽  
pp. 318-322 ◽  
Author(s):  
R. F. Glascock
Keyword(s):  
Single Dose ◽  
Dose Level ◽  
Potassium Iodide ◽  
Chemical Form ◽  
Half Period ◽  
Tracer Dose ◽  
Iodide Ion ◽  
Equilibrium Level

1. A tracer dose of 131I in the form of radioactive potassium iodide of about 50µg. in weight has been administered to a lactating cow and the secretion of the radioactivity in the milk studied.2. The highest activity was found in the milk on the 1st day after dosing and was only slightly lower than that expected if the iodide had been uniformly distributed throughout all the water in the animal's body.3. The secretion of labelled iodine in the milk attained a maximum on the 1st day after dosing and thereafter declined exponentially with a half period of 1·5 days until the 9th day. The rate of secretion, though still approximately exponential, then had a much longer half period (about 10 days) but was too small to study at the dose level used.4. Owing to the decay of the element the observed secretion of radioactivity declined more rapidly than that calculated for labelled iodine and over the first 9 days of the experiment had a half period of approximately 1·2 days. Thereafter the radioactivity declined more slowly with a half period of approximately 3·5 days.5. From these findings it is calculated that regular daily dosing at the same rate would result in an equilibrium level in the milk about 2·3 times the maximum arising from a single dose.6. Less than 5 % of the original dose was recovered from the milk over the period of the experiment by which time the concentration had declined to 0·5 % of its maximum.7. The radioactivity in the milk was found to be in the chemical form of iodide ion.

Efficient terahertz oscillation using a half-period staggered grating resonator

2014 ◽  
Vol 53 (6) ◽  
pp. 066201
Author(s):  
Ohjoon Kwon ◽  
Matlabjon Abdurahimovich Sattorov ◽  
Sun-Hong Min ◽  
In-Keun Baek ◽  
Seontae Kim ◽  
...  
Keyword(s):  
Half Period
Sign in / Sign up

Export Citation Format

Share Document