Pub Date : 2018-08-15DOI: 10.46991/pysu:a/2018.52.2.144
H. Parsamyan, A. Babajanyan, Shant Arakelyan, K. Lee
Glucose concentration in the aqueous solution was measured using a microwave metamaterial sensor based on the modified Hilbert curve of the first fractal order. In order to increase the system sensitivity at fixed meta-element sizes, the design of the sensor was optimized by using finite element method. It was observed that $ S $ parameters of the metamaterial microstrip line sensor at resonant frequencies strongly depend on the glucose concentration. Consequently, by measuring the microwave responses for the different concentrations one can detect the glucose concentration in the solution. Such structure can be useful in the biological and medical applications.
{"title":"DETERMINATION OF GLUCOSE CONCENTRATION IN AQUEOUS SOLUTION BY USING MODIFIED HILBERT SHAPED MICROWAVE METAMATERIAL SENSOR","authors":"H. Parsamyan, A. Babajanyan, Shant Arakelyan, K. Lee","doi":"10.46991/pysu:a/2018.52.2.144","DOIUrl":"https://doi.org/10.46991/pysu:a/2018.52.2.144","url":null,"abstract":"Glucose concentration in the aqueous solution was measured using a microwave metamaterial sensor based on the modified Hilbert curve of the first fractal order. In order to increase the system sensitivity at fixed meta-element sizes, the design of the sensor was optimized by using finite element method. It was observed that $ S $ parameters of the metamaterial microstrip line sensor at resonant frequencies strongly depend on the glucose concentration. Consequently, by measuring the microwave responses for the different concentrations one can detect the glucose concentration in the solution. Such structure can be useful in the biological and medical applications.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77054296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-08-15DOI: 10.46991/pysu:a/2018.52.2.084
L.V. Mikayelyan
In the present short note we prove a version of the classical fixed-point theorem, as well as present its application.
在这篇短文中，我们证明了经典不动点定理的一个版本，并给出了它的应用。
{"title":"ON A VERSION OF FIXED POINT THEOREM","authors":"L.V. Mikayelyan","doi":"10.46991/pysu:a/2018.52.2.084","DOIUrl":"https://doi.org/10.46991/pysu:a/2018.52.2.084","url":null,"abstract":"In the present short note we prove a version of the classical fixed-point theorem, as well as present its application.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76773092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.46991/pysu:a/2018.52.3.213
K. Petrosyan
In this work we study the influence of hydrodynamic flows on the optical properties of hybrid aligned nematic liquid crystals (NLC) structure caused by direct volume expansion mechanism for the case, when the direction of flow velocity is perpendicular to the angular distribution of the molecules in the cell. It has been shown that the hydrodynamic flow leads to reorientation of NLC molecules. The behavior of the polarized light passing through the NLC layer for two opposite directions of the flow was observed.
{"title":"INFLUENCE OF HYDRODYNAMIC FLOWS ON THE OPTICAL PROPERTIES OF HYBRID ALIGNED NEMATIC LIQUID CRYSTALS","authors":"K. Petrosyan","doi":"10.46991/pysu:a/2018.52.3.213","DOIUrl":"https://doi.org/10.46991/pysu:a/2018.52.3.213","url":null,"abstract":"In this work we study the influence of hydrodynamic flows on the optical properties of hybrid aligned nematic liquid crystals (NLC) structure caused by direct volume expansion mechanism for the case, when the direction of flow velocity is perpendicular to the angular distribution of the molecules in the cell. It has been shown that the hydrodynamic flow leads to reorientation of NLC molecules. The behavior of the polarized light passing through the NLC layer for two opposite directions of the flow was observed.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"242 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82891243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.46991/pysu:a/2018.52.3.200
D. A. Simonyan
The detection and recognition of objects in images has found a wide application in many spheres. It is used in the surveillance system, cartography, robotics, medicine, etc. In many surveillance systems the localization of the detected object has a great significance. After localizing the object, it will be possible to carry out the calculation of its coordinates. The formulas for calculating the object-camera distance are rather theoretical. Conducting experiments and verifying formulas in practice would have a high significance, as the distance of the object from camera is an essential precondition for object’s coordinate calculation.
{"title":"COORDINATES CALCULATION OF DETECTED AND RECOGNIZED OBJECTS IN SURVEILLANCE SYSTEMS","authors":"D. A. Simonyan","doi":"10.46991/pysu:a/2018.52.3.200","DOIUrl":"https://doi.org/10.46991/pysu:a/2018.52.3.200","url":null,"abstract":"The detection and recognition of objects in images has found a wide application in many spheres. It is used in the surveillance system, cartography, robotics, medicine, etc. In many surveillance systems the localization of the detected object has a great significance. After localizing the object, it will be possible to carry out the calculation of its coordinates. The formulas for calculating the object-camera distance are rather theoretical. Conducting experiments and verifying formulas in practice would have a high significance, as the distance of the object from camera is an essential precondition for object’s coordinate calculation.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"45 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91399712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.46991/pysu:a/2018.52.3.205
V. Mughnetsyan
In this paper the effect of donor impurity on the Aharonov–Bohm oscillations of the electronic states in a double quantum ring with Gaussian confinement has been studied. Three different impurity positions: namely in the inner ring, in the outer ring and in the barrier between the rings, have been considered. It is shown that the energies of the two lowest states are almost constant, while for the higher levels the Aharonov–Bohm oscillations are observed. The obtained results indicate on the possibility of the effective control of the quantum states by means of donor impurity and external magnetic field.
{"title":"EFFECT OF DONOR IMPURITY ON AHARONOV–BOHM OSCILLATIONS IN A DOUBLE QUANTUM RING WITH GAUSSIAN CONFINEMENT","authors":"V. Mughnetsyan","doi":"10.46991/pysu:a/2018.52.3.205","DOIUrl":"https://doi.org/10.46991/pysu:a/2018.52.3.205","url":null,"abstract":"In this paper the effect of donor impurity on the Aharonov–Bohm oscillations of the electronic states in a double quantum ring with Gaussian confinement has been studied. Three different impurity positions: namely in the inner ring, in the outer ring and in the barrier between the rings, have been considered. It is shown that the energies of the two lowest states are almost constant, while for the higher levels the Aharonov–Bohm oscillations are observed. The obtained results indicate on the possibility of the effective control of the quantum states by means of donor impurity and external magnetic field.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78277420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-01-01DOI: 10.46991/pysu:a/2018.52.3.166
G. Mikayelyan, F. Hayrapetyan
Using the Fourier transforms method for meromorphic functions we characterize the behavior of the integral logarithmic mean of arbitrary order of Blaschke products for the half-plane.
利用亚纯函数的傅里叶变换方法，刻画了半平面上任意阶Blaschke积的积分对数均值的性质。
{"title":"ON INTEGRAL LOGARITHMIC MEANS OF BLASCHKE PRODUCTS FOR A HALF-PLANE","authors":"G. Mikayelyan, F. Hayrapetyan","doi":"10.46991/pysu:a/2018.52.3.166","DOIUrl":"https://doi.org/10.46991/pysu:a/2018.52.3.166","url":null,"abstract":"Using the Fourier transforms method for meromorphic functions we characterize the behavior of the integral logarithmic mean of arbitrary order of Blaschke products for the half-plane.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"17 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75641940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-12-22DOI: 10.46991/pysu:a/2019.53.1.013
V. S. Atabekyan, H. T. Aslanyan, A. Grigoryan
We have proved that any automorphism of the free Burnside group $ B(3) $ of period 3 and an arbitrary rank is induced by an automorphism of the free group of the same rank.
{"title":"AUTOMORPHISMS OF FREE BURNSIDE GROUPS OF PERIOD 3","authors":"V. S. Atabekyan, H. T. Aslanyan, A. Grigoryan","doi":"10.46991/pysu:a/2019.53.1.013","DOIUrl":"https://doi.org/10.46991/pysu:a/2019.53.1.013","url":null,"abstract":"We have proved that any automorphism of the free Burnside group $ B(3) $ of period 3 and an arbitrary rank is induced by an automorphism of the free group of the same rank.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"432 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91511067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-12-15DOI: 10.46991/pysu:a/2017.51.3.266
A. Tadevosyan
$In~vivo$ effect of non thermal millimeter electromagnetic waves (MEMWs) with $50.3~GHz$ (which coincides with resonant frequencies of oscillations of water molecular structures) and $48.3~GHz$ (which does not coincide with resonant frequencies) frequencies on DNA primary and secondary structures of liver of healthy rats as well as Sarcoma-45 tumor carrying rats has been studied. It was shown, that under the effect of MEMWs with $50.3~GHz$ during $60~min$, the content of 5-methylcitosine, the melting parameters of DNA of Sarcoma-45 tumors changed and approached to respective values of DNA extracted from the liver of healthy animals.
{"title":"EFFECT OF ATHERMAL MILLIMETER ELECTROMAGNETIC RADIATION ON DNA STRUCTURE OF TUMOR TISSUE $IN~VIVO$","authors":"A. Tadevosyan","doi":"10.46991/pysu:a/2017.51.3.266","DOIUrl":"https://doi.org/10.46991/pysu:a/2017.51.3.266","url":null,"abstract":"$In~vivo$ effect of non thermal millimeter electromagnetic waves (MEMWs) with $50.3~GHz$ (which coincides with resonant frequencies of oscillations of water molecular structures) and $48.3~GHz$ (which does not coincide with resonant frequencies) frequencies on DNA primary and secondary structures of liver of healthy rats as well as Sarcoma-45 tumor carrying rats has been studied. It was shown, that under the effect of MEMWs with $50.3~GHz$ during $60~min$, the content of 5-methylcitosine, the melting parameters of DNA of Sarcoma-45 tumors changed and approached to respective values of DNA extracted from the liver of healthy animals.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79556925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-12-15DOI: 10.46991/pysu:a/2017.51.3.224
K. Hovsepyan, A.V. Tsutsulyan
In the paper $K$-groups of $C^*$-subalgebras of the Toeplitz algebra generated by inverse subsemigroups of the bicyclic semigroup are discussed. For these algebras inductive limit of inductive sequence of $K$-groups, which are generated by the corresponding inductive sequence of $C^*$-algebras is constructed.
{"title":"$K$-GROUPS OF SOME SUBALGEBRAS OF THE TOEPLITZ ALGEBRA","authors":"K. Hovsepyan, A.V. Tsutsulyan","doi":"10.46991/pysu:a/2017.51.3.224","DOIUrl":"https://doi.org/10.46991/pysu:a/2017.51.3.224","url":null,"abstract":"In the paper $K$-groups of $C^*$-subalgebras of the Toeplitz algebra generated by inverse subsemigroups of the bicyclic semigroup are discussed. For these algebras inductive limit of inductive sequence of $K$-groups, which are generated by the corresponding inductive sequence of $C^*$-algebras is constructed.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"62 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79990247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2017-12-15DOI: 10.46991/pysu:a/2017.51.3.236
A. Minasyan
In this paper we estimate the minimal number of systems of linear equations of $n+m$ variables over a finite field $F_q$ such that the union of all solutions of all the systems coincides exactly with all elements of $overset{ast}{mathbb{F}_{q}^{n}} times overset{ast}{mathbb{F}_{q}^{m}}$.
{"title":"ON THE MINIMAL COSET COVERING FOR A SPECIAL SUBSET IN DIRECT PRODUCT OF TWO FINITE FIELDS","authors":"A. Minasyan","doi":"10.46991/pysu:a/2017.51.3.236","DOIUrl":"https://doi.org/10.46991/pysu:a/2017.51.3.236","url":null,"abstract":"In this paper we estimate the minimal number of systems of linear equations of $n+m$ variables over a finite field $F_q$ such that the union of all solutions of all the systems coincides exactly with all elements of $overset{ast}{mathbb{F}_{q}^{n}} times overset{ast}{mathbb{F}_{q}^{m}}$.","PeriodicalId":21146,"journal":{"name":"Proceedings of the YSU A: Physical and Mathematical Sciences","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91186385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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