bluuebunny/crossref_metadata_2025 huggingface dataset:
Water culture connection
Authors: Mascarenhas Poonam Verma
Published: December 2021

The increasingly frequent natural disasters in the last decade, are not only symptomatic of climate change, but indicate the critical importance of a holistically overhauling our lifestyles and sympathetically engaging with our built and natural environment. There is an urgent need to actively engage with and analyse the pre-industrial era traditional settlements, as they constitute a three-dimensional record of past wisdom embodying a holistic way of life that reflects a synergetic relationship with nature. The essay explores connect of water and settlements in Indian subcontinent from the Indus Valley civilization to mediaeval times to the colonial and then Independent India. Traditionally in India, land, rivers, fields, groundwater, and forests were all valuable resources and not commodities. Each of the states of India and their traditional settlements are a repository of such knowledge systems for respective climate. By combining 21st Century mapping technologies and regional traditional knowledge systems of water harvesting and management, it is possible to effectively synergise the top-down and ground-up planning policies. Citing examples and experiential learning’s, the essay espouses for conservation led development as preferred planning policy to achieve an equitable, stable, self-sustaining, compassionate, and humane future, as continuum of three thousand years of nature-culture journey.

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A People’s process
Authors: Balsavar Durganand
Published: December 2021

This essay elucidates some of the lessons learnt from the community participatory process adopted by Artes, in the Post- Tsunami housing reconstruction project at Nagapatinam, Tamilnadu (2005-08). The program was a self-build process, respectful of gender. A pragmatic assessment of regional technologies, materials and skills was undertaken. The technological assessment was conducted by the community, in collaboration with structural engineers. Projects under consideration are in Sirkazhi Taluk and Akkaraipettai, Nagapatinam region in Tamilnadu, which had been adversely affected.
The projects were nominated as best practices by the UNDP, India (2008) for community participatory processes. It inspired a new sense of belonging and confidence in the community. Besides indigenous construction practices, the community was provided an opportunity to learn new construction skills that they desired, which were beneficial in the longer term. The new construction skill sets ensured the community was independent to build their own dwellings incrementally in later years. The community was no more at the mercy of external contractors. The design of the dwellings also enabled future incremental growth. This research highlights some of the lessons in capacity building of communities; using construction skills to enable them to rebuild their own homes, as well as be self-reliant in future extensions and additions.
La Importancia de la Mediación en la Solución de Conflictos Privados en Panamá
Authors: González González Erick Javier
Published: December 2021

En este trabajo se analizan los aspectos generales de la mediación con énfasis en la

solución de conflictos privados para que los casos en los juzgados, especialmente

civiles y comerciales, puedan ser derivados a mediación. De allí, que es importante

crear conciencia en los Abogados para que transiten de una cultura del litigio hacia

una cultura de paz. En este orden de ideas, hay un alto índice de causas por resolver

en la jurisdicción civil y comercial, lo que trae como problemática el aumento del

rezago judicial. Por tal motivo, la mediación es un instrumento eficaz para que las

partes intervinientes puedan solucionar de manera pacífica su conflicto, permitiendo

de esta manera reducir el índice de causas pendientes por dar respuesta. A su vez,

se robustece la cultura de paz frente al alto índice de litigio que se percibe en los

juzgados, procurando además beneficios para las partes en cuanto a reducción de

tiempo, ahorro de dinero y se minimiza el desgaste tanto físico como emocional.
Los principios de la mediación y sus abordajes desde la normatividad en Colombia y el derecho internacional privado
Authors: Fornaris Parejo Zulgenis Ester
Published: December 2021

La mediación es uno de los métodos de solución de conflictos que tiende a ser amigable en el tratamiento de las controversias, invitando a la actuación de las partes, bajo algunos principios que caracterizan las funciones de los que en ella intervienen, tanto las partes en conflicto, como el tercero, quien asume el rol de mediador, por lo que resulta relevante en el presente documento realizar un análisis de los diversos conceptos de la mediación, y los principios de voluntariedad, imparcialidad, neutralidad y confidencialidad como los ejes del proceso, identificando su presencia en la normatividad que existe desde lo nacional en Colombia, y su abordaje desde el derecho internacional privado, tomando como principales referentes las Leyes Modelo CNUDMI de los años 2002 y 2018, para finalmente evidenciar la presencia de los principios en mención y las relaciones existentes entre ambas normatividades respecto a éstos.
ANALISIS SOP (STANDARD OPERATING PROSEDURE) DALAM PRODUKSI ROTI GEMBOPADA USAHA ROTI GEMBONG BITE DI SAMARINDA
Authors: Syahdi Nur
Published: December 2021

The results showed that the SOP used was the SOP in the simplest form which only had a few activities and decision making. In the production process there are five stages carried out during the production process, namely, preparing raw materials, stirring the dough into a mixer, the process of rolling bread, the process of developing bread and the process of developing the dough ready to bake. Here the raw materials in the form of main raw materials namely wheat flour, capital in the form of owner's personal capital, machines in the form of tools used during the production process and work force are very influential during the production process because workforce is the main actor in the production of bread king. As one of the kingpin bread businesses in Samarinda, it is expected that the staff of the kingpin bread must continue to improve and maintain the quality of the production produced, that is bread kingpin and still maintain the quality of human resources namely labor. The most important thing must not be forgotten is that labor is a very very important factor of production in every production process that should be a benchmark to find out whether the system implemented has been implemented properly.
Mesoptychia morrisoncola (Jungermanniaceae, Marchantiophyta) – An Addition to the Bryoflora of Indian Eastern Himalaya
Authors: Singh Devendra , Singh Devendra 
Published: December 2021

Mesoptychia morrisoncola (Horik.) L. Söderstr. & Vá?a – earlier known in Indian bryoflora from Gulmarg in Jammu & Kashmir, is described for the first time form Sikkim in Eastern Himalaya. Identification key to the Indian species of the genus has been provided.
Operationalizing the emergent management of psychiatric patients during the COVID-19 pandemic at an academic public hospital
Authors: Thomas Ynhi , Andrabi Sara , Moukaddam Nidal , Shah Asim , Buehler Greg , Carnell Jennifer , Bicette Richina , Dark Cedric , Bezek Sarah
Published: December 2021

Background: While the volume of Emergency Department (ED) visits has declined during the 2019 novel coronavirus disease or COVID-19, the opposite has been observed with mental-health related visits. The need to screen and manage potential COVID-19 symptoms in parallel with psychiatric complaints have imposed new challenges in the ED at an academic public hospital.Objective: The objective is to share operational modifications in addressing the challenges related to the influx of ED mentalhealth related complaints at the departmental, hospital-wide, and city-wide level within an academic, public hospital.Methods: At the departmental level, a triage algorithm for screening patients with concerning symptoms was developed. A dedicated Respiratory Decision Unit with psychiatrically safe rooms that adhered to infection prevention protocol was also created. All staff were trained to utilize personal protective equipment through lectures, asynchronous learning, and multidisciplinary simulations. The ED team worked with hospital leadership to increase inpatient medical psychiatric bed capacity and to develop testing protocols for patients being admitted to allow for cohorting of symptomatic patients. At the city level, leadership within the three main organizations that provide mental health services to the city met regularly to address operational issues.Conclusions: The COVID-19 pandemic has imposed new challenges in terms of increased psychosocial needs while limiting transmission risks. Based on the experiences shared, a multitier approach is necessary. At all levels, the goals were to screen appropriately, decrease transmission risk, and maintain throughput. The purpose of this descriptive manuscript is to encourage dialogue and to raise awareness about the unique needs of the mental health system.
Analysis of total ozone, potential vorticity and tropopause pressure over southeast Asia during winter
Authors: BEGUM D. A.
Published: December 2021

This article shows the analysis of total ozone and potential vorticity and also tropopause  pressure during winter period (December, January and February) over the area 20°-50°N, 90°.160oE (southeast Asia), This is done for three different latitude bands 20o-30oN, 30° -40° N and 40°S -50oN. Due to maximum, latitudinal gradient of ozone in the lower latitudinal band, high correlation is found with potential vorticity and also with tropopause level
An oceanic model for the prediction of southwest monsoon rainfall over India
Authors: SlNGH J. P. , PAI D. S.
Published: December 2021

Nine new oceanic predictor for long range forecasting of Indian summer monsoon rainfall been identified utilizing  the marine meteorological data of the North Indian Ocean and the monsoon rainfall data of the period 1961-91. In order to develop a reliable regression model the principal component analysis (PCA) of original variables has been done. Five parameters having maximum influence on first principal component, which is having highest correlation with the monsoon rainfall are : wind power in the atmospheric boundary layer over the north Indian Ocean between Equator and 100 N, mean evaporation over the Arabian Sea (00 -150 N) mean sea surface temperature (SST) gradient over the Arabian Sea between 7.50 – 17.50 N, mean evaporation over Bay of Bengal between Equator and 100 N and mean sea level pressure (SLP) over the Arabian Sea, each pertaining to the month of May. A multiple regression model for all Indian rainfall of southwest monsoon season has been developed using the principal components which have got good cor-relations with the monsoon rainfall. The model was tested for all the years from 1987 to 1991 and it has been found that the predicted values of all India summer monsoon rainfall of all the years except 1989 were very close to the actual values. However, there was a substantial difference between the predicted and actual rainfall of 1989 summer monsoon.
Rainfall distribution over Bangladesh stations during the monsoon months in the absence of depressions and cyclonic storms
Authors: HUSSAIN M. AMIRUL , SULTANA NAHID
Published: December 2021

Monsoonal rainfall plays an important role in the annual rainfall distribution over Bangladesh. It is generally believed that monsoon depressions and cyclonic storms significantly affect the rainfall distribution over Bangladesh during the monsoon months and their absence causes deficient rainfall during the individual monsoon months. This aspect has been examined by computing the average rainfall for 32 meteorological observatories of Bangladesh Meteorological Department during the period 1948.91 for those monsoon months which were free from depressions and cyclonic storms. It has been found that the absence of monsoon depressions and cyclonic storms is not the main factor which causes deficient rainfall and consequent drought conditions in the individual monsoon months over different stations of the country. All the stations in the country experienced normal rainfall conditions inspite of the absence of depressions and cyclonic storms in the monsoon season (June-September).
A linear model study of the mid-tropospheric ridge and its displacement
Authors: CHANDRASEKAR A. , GOSWAMI B. N.
Published: December 2021

A linear model of the steady response of a stratified fluid to isolated heat sources is used to study the maintainence of the mean position of the mid-tropospheric ridge and its displacemerit. It is well known that the performance of the southwest Indian monsoon is intimately related to the latitudinal position of the April 500 hPa ridge along 75°E. Recent observational studies have demonstrated that the winter/spring snow cover over Eurasia are negatively related to the April  500 hPa ridge position. In this study we propose one possible physical mechanism of southward displacement of the mid-tropospheric ridge. The anomalous cooling associated with the increased snow cover in Eurasia may be considered as a heat sink north of  the tropical heal sources. It is demonstrated that such a heat sink can result in significant southward displacement of the mid-tropospheric ridge.
Relationship between tropospheric thickness anomalies and Indian summer monsoon rainfall
Authors: SINGH DHANNA , BHADRAM C.V.V. , MANDAL G.S.
Published: December 2021

ABSTRACT .The tropospheric mean monthly thickness anomalies of northern Indian stations of selected layers for the months April to July for a 28 years (1968-95) period have been analysed. The thickness anomalies of April and May exhibit significant persistence through July. Also the thickness anomalies of different layers for the months May-July are found to have generally significant (5% to 0.1% level) linear correlations with the succeeding all India seasonal monsoon rainfall. Out of different layers and all the months analysed, the thickness anomalies of 850-300 and 850-100 hPa layers for May are found to have maximum correlations (significant at 0.1% level). From linear and multiple regression results, 850-300 hPa thickness anomaly is seen to be a useful predictor for long range prediction of Indian monsoon rainfall.
The role of meteorological parameters on the infestation of rust and leaf miner of groundnut at Akola
Authors: CHATTOPADHYAY N. , DUBEY R. C. , WADEKAR S. N.
Published: December 2021

ABSTRACT- Effect of meteorological parameters on the incidence of rust and leaf miner of groundnut at Akola, Maharashtra is studied. Both graphical and statistical methods are used as tools for evaluating correlation of meteorological parameters with rust and leaf miner. It is found that rust infestation occurs in the pod ripening stage whereas leaf miner attack extends from pod formation to pod ripening stage of groundnut. Decrease of minimum temperature, relative humidity and increases of sunshine hours a few days back increases rust  infestation. Increase in maximum temperature in humid and bright sunshine condition helps to raise leafminer population.
Prediction of annual runoff using Artificial Neural Network and Regression approaches
Authors: VIVEKANANDAN N.
Published: December 2021

Prediction of runoff is often important for optimal design of water storage and drainage works andmanagement of extreme events like floods and droughts. Rainfall-runoff (RR) models are considered to be most effectiveand expedient tool for runoff prediction. Number of models like stochastic, conceptual, deterministic, black-box, etc. iscommonly available for RR modelling. This paper details a study involving the use of Artificial Neural Network (ANN)and Regression (REG) approaches for prediction of runoff for Betwa and Chambal regions. Model performanceindicators such as model efficiency, correlation coefficient, root mean square error and root mean absolute error are usedto evaluate the performance of ANN and REG for runoff prediction. Statistical parameters are employed to find theaccuracy in prediction by ANN and REG for the data under study. The paper presents that ANN approach is found to besuitable for prediction of runoff for Betwa and Chambal regions.
Use of scatterometer based surface vorticity fields in forecasting genesis of tropical cyclones over the north Indian Ocean
Authors: SINGH O. P. , SINGH HARVIR
Published: December 2021

. Utilizing surface vorticity fields computed with the ocean surface wind speed and direction dataobtained from QuikSCAT, a study has been undertaken to investigate the increase in surface vorticity during the genesisphase of tropical cyclones over the north Indian Ocean. Six named tropical cyclones; Agni, Hibaru, Mala, Akash, Nargisand Phyan which formed over the region during 2004-2009 have been selected for this purpose. It has been found thatthere was a steep rise in scatterometer based surface vorticity before the formation of a cyclone in the cyclogenesisregion. The peak surface vorticity in the genesis region was observed on the day of intensification of the vortex to thedepression stage or a day earlier. However, the rising trend in the genesis region begins a few days before the formationof the system. Thus, the surface vorticity fields derived on the basis of scatterometer data can provide predictiveindication of the genesis of tropical cyclones over the Bay of Bengal and Arabian Sea with a lead time of 2-3 days. Usingthis technique it is possible to increase the lead time of pre-cyclone watch period over the north Indian Ocean.

No relationship was found between the peak surface vorticity anomaly during the genesis phase and the surfacevorticity anomaly at the time of peak intensity of the system during its life cycle. In other words, the peak surfacevorticity anomaly during genesis phase does not provide any indication of future maximum intensity of the cyclone.
Impact of climate change on agriculture in eastern Uttar Pradesh and Bihar states (India)
Authors: KUMAR ARVIND , TRIPATHI PADMAKAR , SINGH K.K. , MISHRA A.N.
Published: December 2021

Production of crops is greatly influenced by weather phenomena and therefore any change in climate will have major effects on crop yield and productivity. Using NYD analysis for prediction of crop yield on seasonal basis, it has been observed that maximum temperature may cause the reduction in yield of rice in Eastern Uttar Pradesh by 1.0 to 1.1% per ha by 2020. Similarly, minimum temperature may decrease the yield of rice by 1.5 to 1.9% per ha in Eastern Uttar Pradesh. From future scenario of rainfall it was observed that south-west monsoonal rainfall would be the major factor for controlling the yield of rice. The role of maximum temperature for wheat production in Bihar state is more significant as compared to Eastern Uttar Pradesh. The model predicts that wheat yield may decrease by 5-6% in Bihar state due to increase in maximum temperature by the end of 2080 whereas this decrement in Eastern Uttar Pradesh may be 1.5-2.0%.
Using dispersion modeling for ground level concentration
Authors: ESSA KHALEDS.M. , MUBARAK FAWZIA
Published: December 2021

A short range model calculating ground-level concentration from elevated sources is estimated, which realized a Fickian-type formula. Taking the source and mixing height are functions of the wind velocity and eddy diffusivity profiles. The model estimated with an exact solution of the advection diffusion equation is compared with experimental ground level concentrations using meteorological data collected near the ground.
Association of major earthquakes (magnitude >= 6 Richter scale) with geomagnetic activity index KP during the period 2001-2007
Authors: MIDYA S.K. , DUTTA A.K. , PANDA P.
Published: December 2021

A critical study of variation of geomagnetic activity index Kp for the period 2001-2007 have been made and its close association with major earthquakes (magnitude >= 6 Richter scale) is presented. From statistical analysis it is confirmed that when Kp touches 0 or 0+ values, major earthquakes take place within 48 hours. This is also explained considering the motion of the molten metal inside the outer core of earth.
Variation of aerosol optical thickness with atmospheric water vapour : A case study over a continental station Mysore, India
Authors: GANESH K.E. , UMESH T.K. , NARASIMHAMURTHY B.
Published: December 2021

Atmospheric measurements in a continental, low latitude station Mysore (12.3° N) has been carried out, for the period December 2003 to June 2006. Measurements were made using a sunphotometer with five bands in the visible and near-infrared range of the solar spectrum. To bring out the wavelength dependence of Aerosol Optical Thickness (AOT) on atmospheric water vapour, typically two wavelength channels are being used, one at 500 nm and the other at 1020 nm. A linear dependence between AOT and water vapour on meteorologically calm days is the important observation made. Growth rate of AOT is found to be larger at shorter wavelength (500 nm) than that of the longer wavelength (1020 nm). A mass-plot representation is followed on monthly basis, which is nothing but the graphical plot of spectral AOT versus water vapour of the scans for all the clear sky days of a particular month. Further investigations reveal that some months exhibit a single trend of growth of AOT with water vapour whereas double trend is the scenario for other months. These results provide insight into the changes in the atmospheric aerosol characteristics with precipitable water vapour, which is the subject matter of this paper.
Origin of «Plasma», or The History of a Word
Authors: A. Kotelnikov Igor
Published: December 2021

The period of plasma physics formation as a science is mythologized. Even the birthday of plasma physics and the parentage of the word «plasma» are disputed. On the eve of 80th anniversary of the paper, where the electrically neutral region of the gas discharge has been named plasma for the first time, it is noteworthy separating the truth from archaeological stratifications.
Vortex Generation in a Thin Liquid Layer under the Effect of Moving Heater
Authors: A. Kuibin Pavel , V. Sharypov Oleg
Published: December 2021

An effect of moving local heater on the flow structure in a thin liquid layer on horizontal substrate is analyzed. The 2-D problem is considered under boundary layer approximation. For the case of small Reynolds numbers the steadystate equation is derived for description of the liquid film deformation in the accompanying frame of reference. The obtained equation can be applied in particular at horizontal substrate orientation. The results of simulations of the film thickness, pressure and liquid velocity at a given model temperature distribution on a free surface are presented. The dependencies of liquid viscosity and density on the temperature are neglected in the model, as well as heat, mass and momentum transfer at the free surface. It is shown that even in absence of liquid motion under gravity action the motion of local heater provides the existence of steady-state regime without film breakdown and dry spot formation. As outcome the theoretical background for new scheme of experimental study of phenomena in non-isothermal liquid films is developed.
Magnetic field and temperature dependences of the electrical resistance of onion structure carbon
Authors: N. Tkachev Evgeny , I. Romanenko Anatoliy , B. Anikeeva Olga , I. Buryakov Timofey , R. Zhdanov Kamil , L. Kuznetsov Vladimir , I. Moiseenkov Sergey
Published: December 2021

In this paper electro physical properties of samples of onion-like carbon have been investigated. Samples have been synthesized by method of thermal graphitization of nanodiamonds. 1D Mott variable-range hopping conductivity has been observed for temperature dependences of resistance of nanoonions volume samples at temperature range 4.2 K – 300 K. Also second-degree increase of positive magnetoresistance up to 6 tesla has been revealed. Some coefficients such as localization radius a, density of states on Fermi level N(EF) have been estimated.
The Impact of Stationary Crossed Electrical and Magnetic Fields on Excess Charge Carriers Generated by Radiation in P-Type Mercury-Cadmium-Telluride Epitaxial Films (Review)
Authors: Kostyuchenko Vladimir Ya.
Published: December 2021

The main characteristics of infrared photodetectors on base of p-type mercury-cadmium-telluride epitaxial films are mainly governed by recombination and diffusion parameters of minor charge carriers. The investigation of excess charge carriers behavior in epitaxial films placed in stationary crossed electrical and magnetic fields is allows determining of this parameters. This paper reviews of such photoelecromagnetic methods for investigation of excess charge carriers’ recombination and diffusion properties as methods of photomagnetic effects and photoconductivity in magnetic fields for Voight and Faradey geometry.
Graphene-Semiconductor Tubular Needles for Operations of Living Cells
Authors: Kopylov Aleksandr V. , Prinz Viktor Ya.
Published: December 2021

The possibility of application of the novel class of tubular needles for piercing cells and injecting biological material inside the cell is considered. Stability calculations of tubular (multiwall) needles were made. Calculations were made for the needles with walls formed from hybrid graphene-semiconductor or graphene structures and spires shaped as trapeziform open cylindrical shells. The possibility of mass fabrication of such needles and chips for AFM significantly broadens the range of available operations on the surface and inside the living cell and opens prospects of effective high-precision manipulations with individual cells.
On the Effect of Velocity Profile Type on the Thermocapillary Deformation of Locally Heated Thin Liquid Film
Authors: Kuibin Pavel A. , Sharypov Oleg V.
Published: December 2021

Differences in the temperature field and deformation of locally heated thin liquid film are studied theoretically for various velocity profiles: parabolic velocity profile in the case of gravity-driven film flow, and uniform one in the case of moving heat source in zero-gravity conditions. Conjugate (hydrodynamic and heat) two-dimensional steady-state problem is solved using long-wave approximation. It is shown that under equal other conditions the flow with uniform velocity profile is characterized by dramatic increase in the thermocapillary deformation of the free surface. At the same time this regime possesses higher stability for dry spot formation comparatively with the shear-driven flow regime.
Image Production with Sub-Diffraction Resolution in Radio Vision Devices of the Terahertz Range Using Receiving Arrays and Image Scanning Procedure
Authors: Bankov Sergey E. , Chebotarev Vladimir M. , Cherepenin Vladimir A. , Korjenevsky Aleksandr V. , Pestryakov Andrey V. , Vystavkin Aleksandr N.
Published: December 2021

The earlier proposed method of image reconstruction with sub-diffraction resolution in radio vision devices (RVD) of the shortwave millimeter and Terahertz frequency range is analyzed. A brief description of the method including the algorithm is given. A computer simulation of the method including the results is described. The limitation of the method due to the noise effect is discussed
Multi-Photon Ionization by a Two-Color Laser Pulse
Authors: Kotelnikov Igor A. , Shkurinov Aleksandr P.
Published: December 2021

A method of imaginary time [1] is used to calculate the probability of multi-photon ionization of atoms by a femtosecond laser field with an admixture of the second harmonic. The conditions for the second harmonic to dominate over the first harmonic in the course of ionization of atoms are found. It is shown that the average momentum of the photoelectrons ejected from an atom depends on the phase shift between the first and second harmonics, as well as on their mutual polarization. Asymptotic formulas for the ionization rate and the average momentum of photoelectrons are obtained. They generally confirm predictions of a phenomenological model based on the classical views [2]
TYDEX: Optics for THz Photonics
Authors: Kropotov Grigory I. , Tsygankova Ekaterina V.
Published: December 2021

TYDEX offers a wide range of optics for THz photonics: passive components (lenses, windows, prisms, mirrors, spectral and beam splitters, and waveplates), built up components (low pass and band pass filters, polarizers, and attenuators), and devices (Golay detectors)
Application of Terahertz Spectroscopy and Imaging
Authors: Kaijun Mu , Cunlin Zhang
Published: December 2021

We examined the feasibility of Terahertz time-domain spectroscopy (THz-TDS) using a 4-mm-thick quartz crystal to extract the angle of rotation of THz radiation polarization induced by a two-color laser in air plasma. We also used the THz-TDS technique to identify explosives and melamine in mixtures. In addition, we presented a new opto-mechanical scanner for security applications using the method of passive THz imaging
Plasmonic Devices for Detection of Terahertz Radiation
Authors: Popov Vyacheslav V.
Published: December 2021

Physics of plasma oscillations and basic principles of plasmonic detection of terahertz radiation in FET structures with two-dimensional electron channels are discussed. Plasmonic devices are practically attractive because they are extremely fast and electrically tunable through the entire terahertz frequency band by changing electric potentials at metal contacts of the device
Surface Plasmon-Polariton Terahertz Waves in Optically Active Media
Authors: P. Sukhorukov Anatoliy , O. Saparina Darya , N. Kalish Andrey
Published: December 2021

We examine the propagation of surface plasmon-polariton terahertz waves along the interface between two media: metal or metamaterial with a negative index and an optically active medium or a nonlinear dielectric. It is shown that in both cases wave profile is not exponential. On the interface of optically active media surface waves are combination of TE and TM localized modes. Diffraction and dispersion of terahertz beams and pulses is studied
Terahertz Dispersive Spectroscopy for Thin-Film Study Via Surface-Plasmon − Bulk Wave Interference
Authors: V. Gerasimov Vasily , A. Knyazev Boris , K. Nikitin Alexey
Published: December 2021

A new technique for terahertz (THz) dispersive spectroscopy of thin films employing surface plasmons (SP) has been developed. The technique is based on the SP’s complex refractive index κ strong dependence on the transition layer optical constants and employs interference in parallel beams of bulk and surface waves. It is remarkable for its accuracy and enables investigators to determine both parts of κ in one measuring procedure. Devices implementing the method may be whether of static or dynamic character; the latter requires measuring time equal at least to one pulse duration
Investigation of Terahertz Radiation Effect on Bovine Serum Albumin Conformation Dynamics by Spin Probing
Authors: F. Nemova Evgeniya , I. Fedorov Vyacheslav
Published: December 2021

Influence of terahertz radiation on bovine serum albumin conformation was investigated by use of EPR spin probing spectroscopy. It was demonstrated that radiation induces an increase of amplitude and line width of triplet. It is supposed that changes of reaction centers steric characteristics is reflected a conformation transition in albumin molecule
The Terahertz Beamline and Tissue Culture Facility on the Alice Accelerator at the Daresbury Laboratory
Authors: Weightman P. , Holder G. , Schofield A. , Williams R. L. , Harrison P. , Bowfield A. , Surman M.
Published: December 2021

A description is given of the terahertz beamline and tissue culture facility that is being commissioned on the ALICE accelerator at the Daresbury laboratory
Design Study of a Table-Top THz Free-Electron Laser for Security Inspection
Authors: Jeong Y. U. , Kazakevich G. M. , Park S. H. , Lee K. , Mun J. , Jang K. H. , Lee J. Y. , Sunwoo J. , Kim K. N. , Lee B. C. , Cha Y.-H. , Cha H. , Kim D. H. , Cha B. H.
Published: December 2021

We have designed a table-top terahertz (THz) free electron laser (FEL). The main issue of the FEL design is to decrease radiation losses at a FEL resonator except outcoupling ratio. Also reducing the number of undulator periods and total undulator length is important to increase FEL conversion efficiency and to reduce its size. The FEL consists of a magnetron-based microtron having an energy of ~5 MeV, a strong electromagnetic helical undulator having the period of ~25 mm, and a cylindrical waveguide-mode optical resonator. The total diameter of the microtron is approximately 50 cm and the macropulse current is more than 50 mA. The size of the system is expected to be 1x2 m2 . The condition for lowloss and high-gain oscillator of the table-top FEL has been studied by using a 2-D FEL code. Simple injection scheme of the electron beam to the undulator was optimized by calculating beam trajectories with a 3-D PIC code. The average THz power is calculated to be 1 W with the tunable wavelength range from 200 µm to 500 µm. The FEL is expected to be used for the real-time imaging of security inspection.
Superconducting Nbn Terahertz Detectors and Infrared Photon Counters
Authors: Korneev Aleksandr A. , Finkel Matvey I. , Maslennikov Sergey N. , Korneeva Yuliya P. , Florya I. , Tarkhov Mikhail A. , Elezov Mikhail S. , Ryabchun Sergey A. , Tretyakov Ivan V. , Isupova Anastasiya A. , Voronov Boris M. , Goltsman Grigoriy N.
Published: December 2021

We present our recent achievements in the development of sensitive and ultrafast thin-film superconducting sensors: hot-electron bolometers (HEB), HEB-mixers for terahertz range and infrared single-photon counters. These sensors have already demonstrated a performance that makes them devices-of-choice for many terahertz and optical applications
The Network of Photoelectromagnetics Methods For Determination of Recombination and Diffusion Parameters of Charge Carriers in Epitaxial Films Mercury-Cadmium-Telluride p-Type
Authors: Ya. Kostyuchenko Vladimir , Yu. Protasov Dmitriy
Published: December 2021

In this paper the network of photoelectromagnetic methods of definition recombination and diffusion parameters developed for p-type epitaxial mercury-cadmium-tellurium films at temperature 77÷125 K is offered. The network includes the methods based on measurement of photoconductivity in a magnetic field for Voight and Faradey geometry, photomagnetic effect, Hall effect and magnitoresistance
The Temperature Measurements of Polymethyl Methacrylate Under Shock Loading
Authors: A. Bordzilovsky Sergey , M. Karakhanov Sergey
Published: December 2021

The brightness temperature was measured in polymethyl methacrylate shocked to 35 GPa by means of the fast two wavelengths optical pyrometer. The calibration of the pyrometer was performed by using a standard tungsten ribbon incandescent lamp prior to each shot. The measured brightness temperature at the wavelength λ = 550 nm was Tb = (1540 ± 30) K and at the wavelength λ = 630 nm it was Tb = (1510 ± 110) K. The results were compared with the temperature calculations obtained from different polymethyl methacrylate equations of state. The absorption coefficient of the shocked polymethyl methacrylate (α = 2.5 mm–1) was determined by using the time dependences in the pyrometric signals
Lasing in the Cylindrical Microresonator with Solid-State Silica Nanosol Film Infiltrated with an Organic Dye
Authors: O. Maltseva Elena , I. Plekhanov Aleksandr
Published: December 2021

For the first time laser medium based on solid-state porous silica nanasol films with the addition of an organic dye in the geometry of cylindrical microresonator is proposed and studied. Low scattering of light in the film and high quality of the modes in cylindrical microresonator determinate low threshold of lasing
Modernization of Powerful Modular Type CW HF Generators for Electron Accelerators
Authors: S. Arbuzov Vladimir , I. Gorniker Eduard , V. Kozyrev Evgeny , A. Kondakov Alexey , M. Petrov Viktor , M. Pilan Andrey , G. Cheskidov Vladimir
Published: December 2021

The paper considers general features of design, experience of operation and modernization of modular type powerful CW generators for charged particles accelerators. The paper states the method of power composition for malty tube stage with different kind of tubes. The features of design and operation experience of modular type generators with domestic GU 101A and foreign TH781 tetrodes are presented
Evolution of Wave Packets in a Laminar Separation Bubble
Authors: V. Dovgal Aleksandr , M. Sorokin Aleksandr
Published: December 2021

Wave packets of time-harmonic disturbances in a laminar separated flow behind a backward-facing step on flat plate are investigated. Experimental data are obtained through hot-wire measurements in a low-turbulent subsonic wind tunnel. The results show that the oscillations generated locally in the separation region are transported upstream which makes an essential difference between the separation bubble under self-excitation and the attached boundary layer
Calculation of Shock Adiabats for Materials Undergoes a Phase Transition
Authors: A. Kinelovskiy Sergey , N. Kulkov Sergey , K. Maevskiy Konstantin
Published: December 2021

We propose a model that allows a single velocity and temperature approximation, and assuming the same pressure for all phases, to calculate the behavior of porous powder mixtures during shockwave loading taking into account the phase transition. Numerical results are compared with available experimental results of different authors to solid and porous media(shock adiabat, double compression shock waves). It is shown that the calculation gives good agreement with experiment for graphite and titanium
Study of Amplitude-Frequency Characteristics Evolution of Wavy Disturbances in Falling Liquid Films
Authors: N. Chernyavskiy Andrey , N. Pavlenko Aleksandr
Published: December 2021

The computer simulation of the wave generation process in falling films of liquid nitrogen has been implemented by using the Kapitsa-Shkadov hydrodynamics model. The different stages of evalution of the wavy disturbances have been considered. The calculation of the spectral power distribution of wavy disturbances has been done for different down-flow coordinates. The relation between amplitude changes of wavy disturbances and their spectral power evolution has been detected
The Electronic Spectrum of Graphene
Authors: A. Kozhevnikov Arkadiy
Published: December 2021

Based on the tight binding approximation for the energy levels of the electron in periodic potential, the electronic spectrum is found of the two-dimensional allotrope of the carbon called graphene. The problem of finding the Landau energy levels of graphene in external magnetic field is solved
ATIK LASTİKLERDEN ELDE EDİLEN SİYAH KARBONUN ASFALTIN İŞLENEBİLİRLİK ÖZELLİKLERİNE ETKİSİ
Authors: GEÇKİL Tacettin , AKSAĞAN Zülfükar , İNCE Ceren Beyza
Published: December 2021

Bu çalışmada, atık lastiklerden elde edilmiş olan siyah karbon (SK) katkısının asfaltın orta ve yüksek sicakliklardaki işlenebilirlik özellikleri üzerindeki etkisi araştırılmıştır. Bu amaçla, penetrasyon sınıfı B 160/220 olan saf asfalta ağırlıkça %5, 10, 15 ve 20 oranlarında SK eklenerek modifiye asfaltlar elde edilmiştir. Saf ve modifiye asfaltların fiziksel özellikleri penetrasyon, yumuşama noktası ve düktilite testleri ile belirlenmiştir. Ayrıca, bağlayıcıların sıcaklık hassasiyetlerinin bir ölçüsü olarak kabul edilen penetrasyon indeksi (PI) değerleri de hesaplanmıştır. Daha sonra, saf ve modifiye bağlayıcıların yüksek sıcaklıklarda bünyelerinde meydana gelen uçucu madde kaybı dönel ince film etüvü deneyi (RTFOT) ile, bağlayıcıların işlenebilirlik özellikleri ise dönel viskozimetre (RV) deneyi ile belirlenmiştir. Fiziksel test sonuçlarına göre, SK katkısıyla bağlayıcıların sertleşme eğiliminin arttığı ve penetrasyon sınıfının B 100/150 olarak değiştiği görülmüştür. Ayrıca, SK katkısıyla bağlayıcıların sıcaklık hassasiyetlerinin azaldığı bu bakimdan en uygun oranın %15SK olduğu görülmüştür. RV sonuçlarına göre, SK katkısıyla bağlayıcıların işlenebilirliklerinin azalarak karıştırma ve sıkıştırma sıcaklıklarının yükseldiği görülmüştür.
THE INFLUENCE OF ENVIRONMENT, E-WOM, AND FACILITIES ON TOURIST DECISIONS TO VISIT SAWUEK RIVER, NORTH ACEH, INDONESIA
Authors: Rusydi Rusydi , Adnan Adnan , Sutan Sutan , Bachri Naufal
Published: December 2021

This study examined the effect of the environment, E-WOM, and facilities on tourists' decision to visit Sawuek river, Indonesia. This study obtained the data by distributing questionnaires to 251 respondents selected using the non-probability approach, namely purposive sampling. The data were analyzed using the Amos SEM tool. The results showed that the environment, E-WOM, and facilities had a positive and significant effect on the decision of tourists to visit the Sawuek river in Indonesia. The tourism environment was the dominant variable influencing tourist decisions. This study had implications for the development of the concept of a river tourism environment.
SI JUKI VS. EMPTY WALLET COMIC ANALYSIS. CRITICAL DISCOURSE REVIEW TEUN A VAN DIJK
Authors: Rahayu Enny
Published: December 2021

This study aims to describe the Critical Discourse Review of Teun A Van Dijk in the comic Si Juki vs Dompet Blank”. This research is a qualitative descriptive study. The method used in this research is the method of data collection and documentation. The data sources in this research are macro structure, super structure, and microstructure which are analyzed directly from the comic Si Juki Vs Dompet Blank. The result of this research is the comic Si Juki Vs Dompet Kososng. From the research results, macro structure, theme; to increase public knowledge about mercury investment. Topics; can start moving to learn to manage finances. Super structure, semantics; In the comic Si Juki Vs Dompet Blank there are two different texts, namely descriptive text, and exposition text. Macro structure; semantics: readers can begin to be moved to learn to manage their finances, stylistics; the choice of words used in the comic Si Juki Vs Dompet Blank is easy to understand because the words used are simple and commonly used in public places, the lexicon; office, boarding, and savings.
APPLICATION OF MATHLAB APPLICATIONS IN IMPROVING STUDENT COMPETENCE UMSU MATHEMATICS EDUCATION STUDY PROGRAM NUMERICAL METHOD COURSE 2019-2020 ACADEMIC YEAR
Authors: Maryanti Indra
Published: December 2021

This study aims to describe the role of MATHLAB software in numerical method lectures, improve students' ability to solve numerical problems through learning assisted by MATHLAB software, improve students' abilities in formulating algorithms through learning assisted by MATHLAB software, improve students' abilities in programming through assisted learning MATLAB software; and describing student responses after numerical learning assisted by MATLAB software. This research is a quantitative research. To prove the hypothesis and answer the problems in this study, several statistical tests were carried out as follows:1. Test the description of the data, namely: making a data frequency table, testing the average value, and standard deviation.2. Prerequisite test, namely: normality test with Liliefors table and homogeneity test.3. Hypothesis testing, namely: statistical tests to see how much improvement in student competence is using the MATLAB software application in the numerical method course. The tests used are regression and correlation tests to see the increase in student competence using the MATLAB software application. The research method used is experimental. The population of this research is UMSU 7th semester students in the 2019/2020 academic year as many as 98 students.
Alma mater, ¡Talithá kum!
Authors: Villegas Rodríguez Manuel
Published: December 2021

Resumen: La Universidad, la Alma Mater, como cualquier otra entidad, en este caso dedicada a la Enseñanza Superior, tiene sus compromisos ante sí misma, ante la Sociedad en la que se encuentra, y ante la Comunidad de Estudiantes. No solo mientras los alumnos asisten a sus aulas, sino también, cuando ya preparados (o más bien titulados), ejercen su personal y peculiar actividad en la Sociedad. Con las evidentes diferencias, a causa del tiempo transcurrido cuando san Agustín ejerció su enseñanza, convendría que una Universidad (real o ficticia), tuviera en cuenta e imitara la forma y la esencia del Magisterio Agustiniano.Abstratct: The University, the Alma Mater, like any other entity, in this case dedicated to Higher Education, has its commitments before itself, before the Society in which it is located, and before the Student Community. Not only while the students attend their classrooms, but also, when already prepared (or rather graduates), they carry out their personal and peculiar activity in the Society. With the obvious differences, because of the time that passed when Saint Augustine taught, it would be convenient for a University (real or fictitious) to take into account and imitate the form and essence of the Augustinian Magisterium.Palabras clave: Obras de San Agustín. Historia de las Universidades. Legislación y Ley positiva. Ciencia y Sabiduría. Democracia. Keywords: Works of Saint Augustine. History of the Universities. Legislation and Positive Law. Science and Wisdom. Democracy
Memoria, historia y telecomunicaciones
Authors: Multigner Gilles
Published: December 2021

El acontecer individual y social ha quedado registrado desde los orígenes de la humanidad en el legado material y en los relatos cuya interpretación nos ha sido, y nos es, transmitida a través de la memoria de sus protagonistas y de los testimonios de cronistas e historiadores, por los medios disponibles en cada época. Confluyen en esta descripción nociones que con el transcurso del tiempo se han ido cargando de tintes polisémicos. Las líneas que siguen no tienen otra pretensión que la de proporcionar al lector un inventario básico de referencias y de fuentes, cronológicamente ordenadas, que le permita circular en este tupido bosque, barrido por vientos galos, que, en España, al socaire de una serie de disposiciones y proyectos legales, se ha puesto de actualidad.
Dos agustinos ante la pobreza y la limosna en el Imperio español a mediados del siglo XVI
Authors: Campos Javier
Published: December 2021

A mediados del siglo XVI surgió una conocida polémica entre importantes teólogos y pensadores sobre el tema de la pobreza, los pobres y la limosna. Unos propugnaban que la solución del problema era un asunto del Estado (visión de los tiempos nuevos); el otro grupo defendía que el tema correspondía a la Iglesia (visión medieval). En este trabajo se estudian las visiones de dos agustinos: por una parte la de Santo Tomás de Villanueva, arzobispo de Valencia (1544-1555), que afronta el problema desde el punto de vista práctico de socorrer a los pobres de la ciudad. Por la otra, el pensamiento de fray Lorenzo de Villavicencio, que censura en su obra (1564) la doctrina que había mantenido en su publicación Gilles Wyts, miembro del consejo de Brujas (1510-1580), inspirado en el libro más antiguo de Luis Vives. También critica el texto que terminaba de elaborar el Senado de Brujas sobre la forma de organizar la asistencia a los pobres de la ciudad.