³äá³ð ³ îáðîáêà ³íôîðìàö³¿, ¹ 17
ÀÍÎÒÀÖ²¯
ÒÅÎÐ²ß ÅËÅÊÒÐÈ×ÍÈÕ Ò²Ë
ÓÄÊ 621.372
Ð. À. Áóíü, ª. Ä. Âàñèëüºâ
Á. ÁËÀÆÊÅÂÈ× - ÂÈÄÀÒÍÈÉ Â×ÅÍÈÉ Ó ÃÀËÓDz ÅËÅÊÒÐÎÒÅÕͲÊÈ (äî 90-ð³÷÷ÿ â³ä äíÿ íàðîäæåííÿ)
Biographic data and review of scientific achievements of the outstanding Ukrainian scientist in the field of electrical engineering B.Blazhkevych are presented. Formed by him and his disciples the scientific directions are described.
Ïîäàíî á³îãðàô³÷íó äîâ³äêó òà îãëÿä íàóêîâèõ çäîáóòê³â âèäàòíîãî óêðà¿íñüêîãî â÷åíîãî â ãàëóç³ åëåêòðîòåõí³êè - Á.Áëàæêåâè÷à. Îïèñàíî çàïî÷àòêîâàí³ íèì òà éîãî ó÷íÿìè íàóêîâ³ íàïðÿìè.
ÓÄÊ681.14
P. Ï. Áàçèëåâè÷
ÀËÃÎÐÈÒÌÈ ÔÎÐÌÀËÜÍί ÄÅÊÎÌÏÎÇÈÖ²¯ ÑÊËÀÄÍÈÕ ÅËÅÊÒÐÎÍÍÈÕ ÑÕÅÌ
The algorithms for solving a wide spectrum of partitioning problems are proposed. The problems belong to intractable combinatorial one (NP-hard). A general approach based on the recursive use of high quality procedures for unique, not very large size tasks is suggested. Experiments confirm its high effectiveness. For some well-known test cases the optimal results were achieved for the first time, while for many other cases improved results were obtained.
Çàïðîïîíîâàíî àëãîðèòìè äëÿ ðîçâ'ÿçóâàííÿ øèðîêîãî êîëà äåêîìïîçèö³éíèõ çàäà÷, ùî â³äíîñÿòüñÿ äî âàæêîï³ääàòëèâèõ êîìá³íàòîðíîãî òèïó (NP - âàæê³). Ðîçðîáëåíî çàãàëüíèé ï³äõ³ä íà îñíîâ³ ðåêóðñèâíîãî âèêîðèñòàííÿ òèïîâèõ ïðîöåäóð íåâåëèêî¿ ðîçì³ðíîñò³. Äëÿ äåÿêèõ â³äîìèõ òåñò³â âïåðøå îòðèìàíî îïòèìàëüí³ ðåçóëüòàòè òà äëÿ áàãàòüîõ ³íøèõ ¿õ ïîêðàùåíî.
ÓÄÊ 621.372.061
Ë. Ñèíèöüêèé
вÂÍßÍÍß ÃÀ̲ËÜÒÎÍÀ ÊÎÍÑÅÐÂÀÒÈÂÍÈÕ ÍÅ˲ͲÉÍÈÕ Ê²Ë ÒÀ ¯Õ ÌÎÄÈÔ²ÊÀÖ²ß ÄÎ ÄÈÑÈÏÀÒÈÂÍÈÕ ÑÈÑÒÅÌ
Hamiltonian equations of conservative nonlinear networks are presented for circuits with n capacitive and n inductive elements. It was shown that modification of Hamiltonian equations can be used for some dissipative RLC-networks. Such equations permit to construct numerical method, which provides A-stability for non-lineal circuits of this type.
Ïîáóäîâàíî ð³âíÿííÿ Ãàì³ëüòîíà äëÿ êîíñåðâàòèâíîãî LC-êîëà, ÿêå ìàº ï ºìíîñòåé ³ ï ³íäóêòèâíîñòåé. Ïîêàçàíî, ùî ìîäèô³êàö³þ öèõ ð³âíÿíü ìîæíà âèêîðèñòàòè äëÿ îïèñó äåÿêèõ äèñèïàòèâíèõ RLC-ê³ë. Îòðèìàí³ ð³âíÿííÿ äîçâîëÿþòü ñòâîðèòè ÷èñåëüíèé ìåòîä, ÿêèé çàáåçïå÷óº À-ñò³éê³ñòü íåë³í³éíîãî RLC-êîëà ç ë³í³éíèìè ðåçèñòîðàìè.
ÓÄÊ 621.372.42
Ì. Ï. Àôàíàñåíêî, Ð. ß. Áåðêìàí, Â. Å. Êîðåïàíîâ
ÀÍÀË²Ç ÑÒ²ÉÊÎÑÒ² ÔÅÐÎÐÅÇÎÍÀÍÑÍÎÃÎ ÐÅÆÈÌÓ ÇÁÓÄÆÅÍÍß ÌÀÃÍÅÒÎÌÎÄÓËßÖ²ÉÍÎÃÎ ÄÀÂÀÍÀ
The analysis of ferroresonance excitation mode (FEM) of fluxgate sensor was carried out, stable mode areas were defined in dependence of other parameters with wide range of their values. Engineering approach was proposed for practical realization of the stable FEM.
Ïðîàíàë³çîâàíî ðîáîòó ìàãíåòîìîäóëÿö³éíèõ äàâà÷³â ó ôåðîðåçîíàíñíîìó ðåæèì³ çáóäæåííÿ (ÔÐÇ), âèçíà÷åíî çîíè, äå öåé ðåæèì º ñò³éêèì çàëåæíî â³ä êîëèâàíü ³íøèõ ïàðàìåòð³â ó âåëèêèõ ìåæàõ. Çàïðîïîíîâàíî ³íæåíåðíèé ï³äõ³ä äî ïðàêòè÷íî¿ ðåàë³çàö³¿ ñò³éêîãî ÔÐÇ.
ÓÄÊ 621.396.96
Â. Î. Ïîãð³áíèé, ². Â. Ðîæàíê³âñüêèé, Â. ². Ëîçèíñüêèé, 3. Ëþòîâñê³
ÊÎÌÏÐÅÑ²ß ×ÀÑÒÎÒÍÎ-ÌÎÄÓËÜÎÂÀÍÈÕ ÑÈÃÍÀË²Â Ó Ç̲ØÀÍÈÕ ÔÎÐÌÀÒÀÕ
The results of studies of the digital matching filtration in time domain of chirp-signals by using pulse code modulation (PCM), differential pulse code modulation (DPCM) and modificate DPCM are shown. The influence of the parameters of the digital filters and DPCM- and MDPCM-encoders is studied on the ratio between main and side lobes of the compressed impulse on an output of the matching filter.
Íàâåäåíî ðåçóëüòàòè äîñë³äæåíü öèôðîâî¿ óçãîäæåíî¿ ô³ëüòðàö³¿ â ÷àñîâ³é îáëàñò³ ÷àñòîòíî-ìîäóëüîâàíèõ ñèãíàë³â ç âèêîðèñòàííÿì ³ìïóëüñíî-êîäîâî¿ ìîäóëÿö³¿ (²ÊÌ), äèôåðåíö³éíî¿ ³ìïóëüñíî-êîäîâî¿ ìîäóëÿö³¿ (IJÊÌ) òà ìîäèô³êîâàíî¿ Ä²ÊÌ (ÌIJÊÌ). Âèâ÷åíî âïëèâ ïàðàìåòð³â öèôðîâèõ ô³ëüòð³â òà IJÊÌ- ³ ÌIJÊÌ-êîäåð³â íà ñï³ââ³äíîøåííÿ ì³æ ãîëîâíîþ òà áîêîâèìè ïåëþñòêàìè ñêîìïðåñîâàíîãî ³ìïóëüñó íà âèõîä³ óçãîäæåíîãî ô³ëüòðà.
ÓÄÊ 681.372
Ï. Ã. Ñòàõ³â, Ñ. É. Ðåíäç³íÿê, Á. ². Êðóïñüêèé
ÐÎÇÐÀÕÓÍÎÊ ÄÈÍÀ̲×ÍÈÕ ÐÅÆÈ̲ ÅËÅÊÒÐÎÍÍÈÕ Ê²Ë ÍÀ ÁÀÃÀÒÎÏÐÎÖÅÑÎÐÍÈÕ ÎÁ×ÈÑËÞÂÀËÜÍÈÕ ÑÈÑÒÅÌÀÕ
Properties of the parallelization of the electronic circuit's dynamic condition on multiprocessor systems are discussed.
Ðîçãëÿíóòî îñîáëèâîñò³ ðîçïàðàëåëåííÿ ïðîöåñó ðîçðàõóíêó äèíàì³÷íèõ ðåæèì³â åëåêòðîííèõ ê³ë íà áàãàòîïðîöåñîðíèõ îá÷èñëþâàëüíèõ ñèñòåìàõ.
ÏÎËß ÒÀ ÑÈÃÍÀËÈ Ó ÍÅÎÄÍÎвÄÍÈÕ ÑÅÐÅÄÎÂÈÙÀÕ
ÓÄÊ 621.317
Ì. Ì. Äîðîæîâåöü
ÏÎвÂÍßËÜÍÈÉ ÀÍÀË²Ç ÐÎÇÂ'ßÇÓÂÀÍÍß ÇÀÄÀײ ÒÎÌÎÃÐÀÔ²¯ ÅËÅÊÒÐÈ×Íί ÏÐβÄÍÎÑÒ² ÌÅÒÎÄÀÌÈ ÂÓÇËÎÂÈÕ ÏÎÒÅÍÖ²À˲ ÒÀ ÊÎÍÒÓÐÍÈÕ ÑÒÐÓ̲Â
In the paper the investigation results of the electrical conductivity tomography direct problem solution are presented. It is shown that the nodes potential method, which naturally corresponds to a finite element approximation, is described by the ill-conditioned linear equations. At the current object excitation the stable solution can be obtained using the contour current method.
Íàâåäåíî ðåçóëüòàòè äîñë³äæåíü ìåòîä³â ðîçâ'ÿçóâàííÿ ïðÿìî¿ çàäà÷³ òîìîãðàô³¿ åëåêòðè÷íî¿ ïðîâ³äíîñò³. Ïîêàçàíî, ùî âèêîðèñòàííÿ ìåòîäó âóçëîâèõ ïîòåíö³àë³â, ÿêèé ïðèðîäíî â³äïîâ³äຠàïðîêñèìàö³¿ ïîëüîâî¿ çàäà÷³ ñê³í÷åííèìè åëåìåíòàìè, ïîâ'ÿçàíå ç ïîãàíîþ çóìîâëåí³ñòþ â³äïîâ³äíî¿ ñèñòåìè ë³í³éíèõ ð³âíÿíü. Ó âèïàäêó çîíäóâàííÿ îá'ºêòà ñòðóìàìè ñòàá³ëüí³ñòü ðîçâ'ÿçê³â ìîæíà îòðèìàòè, âæèâàþ÷è ìåòîä êîíòóðíèõ ñòðóì³â.
ÓÄÊ 621
Â. Â. Êîøîâèé, Î. À. Ãîøòàíàð
ÅËÅÊÒÐβÌÏÅÄÀÍÑÍÀ ÒÎÌÎÃÐÀÔ²ß Â ÒÅÕͲ×Í²É Ä²ÀÃÍÎÑÒÈÖ² ÌÀÒÅвÀ˲Â
The basic principles of application of Electrical Impedance Tomography (HIT) for materials diagnostics are considered. On base of the requirements to technologies and means of EIT, used for the decision of these diagnostic tasks, the information on dependences between the mechanical and electrical characteristics of materials, information technologies of construction of the EIT images, opportunity of application of EIT for estimation of stresses in constructional materials are analyzed.
Ðîçãëÿíóòî ïðèíöèïîâ³ çàñàäè, ÿê³ âèçíà÷àþòü ïåðñïåêòèâè åëåêòðî³ìïåäàíñíî¿ òîìîãðàô³¿ (Á²Ò) â ä³àãíîñòèö³ ìàòåð³àë³â. Íà îñíîâ³ âèìîã äî òåõíîëîã³é Á²Ò äëÿ öüîãî êëàñó ä³àãíîñòè÷íèõ çàäà÷ ïðîàíàë³çîâàíî ³íôîðìàö³þ ïðî çàëåæíîñò³ ì³æ ìåõàí³÷íèìè é åëåêòðè÷íèìè õàðàêòåðèñòèêàìè ìàòåð³àë³â, ³íôîðìàö³éí³ òåõíîëî㳿 ïîáóäîâè çîáðàæåíü â Á²Ò, ìîæëèâîñò³ çàñòîñóâàííÿ Á²Ò äëÿ îö³íêè íàïðóæåíü ó êîíñòðóêö³éíèõ ìàòåð³àëàõ.
ÌÀÒÅÌÀÒÈ×Ͳ ÌÎÄÅ˲ ÑÈÃÍÀ˲ ÒÀ ÑÈÑÒÅÌ
ÓÄÊ 681.513
Î. Þ. Çàé÷åíêî, Þ. Ï. Çàé÷åíêî
ÇÍÀÕÎÄÆÅÍÍß ÌÀÊÑÈÌÀËÜÍÎÃÎ ÏÎÒÎÊÓ Â ÌÅÐÅÆÀÕ Ç ÐÅÆÈÌÎÌ ÀÑÈÍÕÐÎÍÍί ÏÅÐÅÄÀײ ²ÍÔÎÐÌÀÖ²¯
Problem of finding maximal flow in Asynchronous Transfer Mode (ATM) networks is formulated. This problem differs from the traditional one presence by of two constraints which account the various qualities of service in ATM networks. The properties of optimal flow were established and algorithm for finding maximal flow was suggested.
Ñôîðìóëüîâàíî íîâó çàäà÷ó â³äøóêàííÿ ìàêñèìàëüíîãî ïîòîêó â êîìï'þòåðí³é ìåðåæ³ ç òåõíîëî㳺þ àñèíõðîííîãî ðåæèìó ïåðåäà÷³ (Asynchronous Transfer Mode - ATM) ³íôîðìàö³¿. Âîíà â³äð³çíÿºòüñÿ â³ä â³äîìèõ ç ë³òåðàòóðè îáìåæåííÿìè íà ïîêàçíèêè ÿêîñò³ ìåðåæ ATM. Âñòàíîâëåíî âëàñòèâîñò³ îïòèìàëüíîãî ïîòîêó ³ çàïðîïîíîâàíî àëãîðèòì éîãî â³äøóêàííÿ.
ÓÄÊ 621.77(088.8)
Î. Â. Çàáîëîòíèé, Â. Þ. Ìèõàéëèøèí, ². Ì. ßâîðñüêèé
ÎÖ²ÍÊÀ ÌÀÒÅÌÀÒÈ×ÍÎÃÎ ÑÏÎIJÂÀÍÍß ÏÎ˲ÐÈÒ̲×ÍÈÕ ×ÀÑÎÂÈÕ ÐßIJ ÇÀ ÌÅÒÎÄÎÌ ÍÀÉÌÅÍØÈÕ ÊÂÀÄÐÀÒ²Â
The theorems about the samples-rate influence on the least squares method estimate of mean at polyrhythmic signals analysis are formulated and proved.
Ñôîðìóëüîâàíî ³ äîâåäåíî òåîðåìè ïðî âïëèâ êðîêó äèñêðåòèçàö³¿ íà ÿê³ñòü îö³íêè íàéìåíøèõ êâàäðàò³â ìàòåìàòè÷íîãî ñïîä³âàííÿ ï³ä ÷àñ àíàë³çó ïîë³ðèòì³÷íèõ ñèãíàë³â.
ÓÄÊ 621.77
P. M. Þçåôîâè÷
ÊÎÃÅÐÅÍÒÍÅ ÎÖ²ÍÞÂÀÍÍß ÕÀÐÀÊÒÅÐÈÑÒÈÊ ÐÈÒ̲×ÍÈÕ ÑÈÃÍÀ˲ ÇÀ ÄÈÑÊÐÅÒÍÎÞ ÂÈÁ²ÐÊÎÞ
In the paper an approach of changing the discretization frequency of vibration rhythmical signal by means of interpolation algorithm is considered. This approach enables to receive the statistical estimation directly in time field.
Ðîçãëÿíóòî ï³äõ³ä äî çì³íè ÷àñòîòè äèñêðåòèçàö³¿ ðèòì³÷íîãî ñèãíàëó â³áðàö³¿ çà äîïîìîãîþ ³íòåðïîëÿö³éíîãî àëãîðèòìó. Öå äຠìîæëèâ³ñòü îòðèìóâàòè ñòàòèñòè÷í³ îö³íêè áåçïîñåðåäíüî â ÷àñîâ³é îáëàñò³.
ÓÄÊ 551.568.85
Á. À. Ìàíäç³é, À. ß. Áåí÷
ÎÖ²ÍÊÀ ²ÌβÐÍÎÑÒ² ÏÎßÂÈ ÏÎÌÈËÎÊ ÒÀ ÄÎÑÒβÐÍÎÑÒ² ÔÓÍÊÖ²ÎÍÓÂÀÍÍß ÖÈÔÐÎÂÈÕ ÏÐÈÑÒÐÎ¯Â Ç ÂÁÓÄÎÂÀÍÈÌÈ ÑÕÅÌÀÌÈ ÊÎÍÒÐÎËÞ
New approach to functional validity and dependability indexes estimation for digital devices with embedded error checkers had been described.
Âèêëàäåíî íîâèé ï³äõ³ä äî îö³íêè ïîêàçíèê³â ôóíêö³îíàëüíî¿ íàä³éíîñò³ òà äîñòîâ³ðíîñò³ ôóíêö³îíóâàííÿ öèôðîâèõ ïðèñòðî¿â ³ç âáóäîâàíèìè ñõåìàìè êîíòðîëþ.
ÓÄÊ 681.513
Ô. Ìàðåöüêèé
ÌÀÒÅÌÀÒÈ×ÍÀ ÌÎÄÅËÜ ÍÅÏÅÐÅÐÂÍÎÃÎ ÂÀËÜÖÞÂÀÍÍß
The mathematical model of process of continuous rolling, when a material is passed simultaneously through some rool assemblies, is presented. The model allows an effect of wearing of roll assemblies and enables to find optimal rolling routes.
Ïîáóäîâàíî ìàòåìàòè÷íó ìîäåëü íåïåðåðâíîãî âàëüöþâàííÿ, êîëè ìàòåð³àë ïðîïóñêàþòü îäíî÷àñíî ÷åðåç äåê³ëüêà âàë³â. Âîíà âðàõîâóº åôåêòè çíîøåííÿ âàë³â ³ äຠìîæëèâ³ñòü çíàõîäèòè îïòèìàëüí³ âàëüöþâàëüí³ ìàðøðóòè.
ÎÁÐÎÁÊÀ ÂÈ̲ÐÞÂÀËÜÍί ²ÍÔÎÐÌÀÖ²¯
ÓÄÊ 535.361: 620.186
². Á. ²âàñ³â, Ï. Ì. Ñîïðóíþê
ÎÁÅÐÍÅÍÀ ÇÀÄÀ×À ²ÄÒÂÎÐÅÍÍß ²ÍÄÈÊÀÒÐÈÑÈ ÇÂÎÐÎÒÍÎÃÎ ÐÎÇѲÞÂÀÍÍß ÄËß ÍÀϲÂÖÈ˲ÍÄÐÈ×ÍÎÃÎ ÐÅÔËÅÊÒÎÌÅÒÐÈ×ÍÎÃÎ ÑÅÍÑÎÐÀ ÄÈÑÏÅÐÑÍÎÃÎ ÑÊËÀÄÓ ÏÎÐÎØʲÂ
The semicylindrical reflectometric optical sensor for express-estimation of disperse composition of powders by backscattering indicatrix is proposed. The inverse problem of determination of integral backscattering indicatrix for powder on the work (semicylindrical) surface by intensity distribution on the registering (plane) surface is correctly formulated in physical and mathematical sense.
Ðîçãëÿíóòî íàï³âöèë³íäðè÷íèé ðåôëåêòîìåòðè÷íèé îïòè÷íèé ñåíñîð äëÿ åêñïðåñ-îö³íêè äèñïåðñíîãî ñêëàäó ïîðîøê³â çà ³íäèêàòðèñîþ çâîðîòíîãî ðîçñ³þâàííÿ. Êîðåêòíî (ó ô³çè÷íîìó òà ìàòåìàòè÷íîìó ñåíñ³) ñôîðìóëüîâàíî îáåðíåíó çàäà÷ó âèçíà÷åííÿ ³íòåãðàëüíî¿ ³íäèêàòðèñè çâîðîòíîãî ðîçñ³þâàííÿ ïîðîøêó íà ðîáî÷³é (öèë³íäðè÷í³é) ïîâåðõí³ çà ðîçïîä³ëîì ³íòåíñèâíîñò³ íà ðåºñòðóâàëüí³é (ïëîñê³é) ïîâåðõí³.
ÓÄÊ 621.317.445
 .Î. ͳ÷îãà, Î. Ï. Îñòàï, Ï. Á. Äóá
ØÓÌÎÂÅ ÑÏÐßÆÅÍÍß ²ÍÄÓÊÖ²ÉÍÎÃÎ ÄÀÂÀÍÀ ÑÈÃÍÀËÓ Ç Ï²ÄÑÈËÞÂÀËÜÍÈÌ ÏÐÈÑÒÐΪÌ
A correction method of noise properties of an one-stage amplifier built on a bipolar transistor is presented. That allows to realize wideband noise matching of an inductance signal source and an amplifier in the low frequency range.
Îïèñàíî ñïîñ³á êîðåêö³¿ øóìîâèõ âëàñòèâîñòåé îäíîêàñêàäíîãî ï³äñèëþâàëüíîãî ïðèñòðîþ íà á³ïîëÿðíîìó òðàíçèñòîð³, ÿêèé óìîæëèâëþº øèðîêîñìóãîâå øóìîâå ñïðÿæåííÿ ³ç ³íäóêòèâíèì äàâà÷åì ñèãíàëó ó íèçüêî÷àñòîòíîìó ä³àïàçîí³ ÷àñòîò.
ÓÄÊ 621.3.037.001.5
Ã. P. Òðîõèì
ÎÑÎÁËÈÂÎÑÒ² ÐÎÇÂÈÒÊÓ ØÂÈÄʲÑÍί ÄÅÔÅÊÒÎÑÊÎϲ¯ ÇÀ˲ÇÍÈ×ÍÈÕ ÐÅÉÎÊ
Analysis of rail flaw detection with two point of view - physics and informations are presented. Current and past technologies is considered. It is accented on decisive role of digital signals processing.
Ïîäàíî àíàë³ç äåôåêòîñêîﳿ ðåéîê ó äâîõ ðàêóðñàõ - ô³çè÷íîìó òà ³íôîðìàö³éíîìó. Ðîçãëÿíóòî ñó÷àñí³ òà êîëèøí³ ìåòîäè. Íàãîëîøåíî íà âèð³øàëüí³é ðîë³ öèôðîâî¿ îáðîáêè ñèãíàë³â.
ÓÄÊ 621.372.061.3
À. À. Ìàðóñåíêîâ
ÀÍÀË²Ç ÔÅÐÎÐÅÇÎÍÀÍÑÍÈÕ ÏÐÎÖÅÑ²Â Ó ÏÎÑ˲ÄÎÂÍÎÌÓ ÊÎ˲ ÇÁÓÄÆÅÍÍß ÌÀÃͲÒÎÌÎÄÓËßÖ²ÉÍÎÃÎ ÏÅÐÅÒÂÎÐÞÂÀ×À
The serial excitation circuit, which formed by excitation winding and capacitor, for driving a fluxgate sensor (FGS) is considered. Simplified analysis of ferroresonance process in the circuit at the supply it by a square-shape voltage generator is performed. As a result, the equations for calculation of the region of the stable oscillations were found. Results of experimental tests of a serial excitation circuit and example of practical using it for driving small-size FGS are presented.
Çðîáëåíî ñïðîùåíèé àíàë³ç ôåðîðåçîíàíñíîãî ðåæèìó çáóäæåííÿ ôåðîçîíäà ï³ä ÷àñ æèâëåííÿ ïîñë³äîâíîãî íåë³í³éíîãî êîíòóðó, óòâîðåíîãî îáìîòêîþ çáóäæåííÿ òà êîíäåíñàòîðîì, â³ä äæåðåëà ïðÿìîêóòíî¿ íàïðóãè. Âèçíà÷åíî ãðàíèö³ ìîíîòîííîñò³ òà ³ñíóâàííÿ ðåæèìó. Íàâåäåíî ðåçóëüòàòè åêñïåðèìåíòàëüíî¿ ïåðåâ³ðêè ïðîöåñ³â ó ïîñë³äîâíîìó êîë³ çáóäæåííÿ òà ïðèêëàä éîãî çàñòîñóâàííÿ äëÿ çáóäæåííÿ ìàëîãàáàðèòíèõ ôåðîçîíäîâèõ äàâà÷³â.
ÓÄÊ 538.247: 621.3
Ë. Ï. Äèêìàðîâà
ÂÈÇÍÀ×ÅÍÍß ÏÎËßÐÈÇÀÖ²ÉÍÎÃÎ ÎÏÎÐÓ Â Ì²ÑÖ² ÄÅÔÅÊÒÓ ²ÇÎËßÖ²¯ ϲÄÇÅÌÍÎÃÎ ÒÐÓÁÎÏÐÎÂÎÄÓ Ï²Ä ×ÀÑ ÁÅÇÊÎÍÒÀÊÒÍÈÕ ÂÈ̲ÐÞÂÀÍÜ ÑÒÐÓÌÓ
An analytical expression for polarization impedance in the place of the underground pipeline insulation damage is obtained as a dependence on attenuation coefficients on direct and alternating currents.
Îòðèìàíî àíàë³òè÷íèé âèðàç äëÿ ïîëÿðèçàö³éíîãî îïîðó â ì³ñö³ äåôåêòó ³çîëÿö³¿ ï³äçåìíîãî òðóáîïðîâîäó çàëåæíî â³ä êîåô³ö³ºíò³â çàíèêàííÿ íà ïîñò³éíîìó òà çì³ííîìó ñòðóìàõ.
ÎÁÐÎÁÊÀ ÇÎÁÐÀÆÅÍÜ ÒÀ ÐÎÇϲÇÍÀÂÀÍÍß ÎÁÐÀDzÂ
ÓÄÊ 681.325
À. É. Íàêîíå÷íèé
ÍÀÍÅÑÅÍÍß ÖÈÔÐÎÂÈÕ Ï²ÄÏÈѲ ÍÀ ÎÑÍβ ÌÀËÎÕÂÈËÜÎÂÎÃÎ ÏÅÐÅÒÂÎÐÅÍÍß ÑÈÃÍÀ˲Â
This paper presents a wavelet - based watermarking methods for protection of still images. Embedding and detection are performed in the wavelet domain. The suggested method is highly effective against many kinds of distortions, such as linear and nonlinear filtering, compression, resampling, rotation and cropping.
Ðîçãëÿíóòî ìåòîäè íàíåñåííÿ öèôðîâèõ ï³äïèñ³â, ÿê³ áàçóþòüñÿ íà ìàëîõâèëüîâîìó ïåðåòâîðåíí³ ³ ïðèçíà÷åí³ äëÿ çàõèñòó íåðóõîìèõ çîáðàæåíü. Íàíåñåííÿ ³ âèä³ëåííÿ âèêîíóþòüñÿ ó ìàëîõâèëüîâ³é îáëàñò³. Çàïðîïîíîâàíèé ìåòîä ñò³éêèé äî ñïîòâîðåíü, ÿê³ âèíèêàþòü ï³ä ÷àñ ë³í³éíîãî ³ íåë³í³éíîãî ô³ëüòðóâàííÿ, êîìïðåñ³¿, ïåðåâèá³ðêè, îáåðòàííÿ ³ îáð³çàííÿ çîáðàæåíü.
ÓÄÊ 551.568.85
². Î. Kirenko
EXPLOITATION OF SUBBAND STRUCTURE OF DCT FOR VIDEO TRANSCODING
In this paper a new approach to the design of simple scalable video transcoding scheme is presented. The proposed algorithm is able to generate a progressively scalable stream that allows robust transmission via channels with varying bandwidth. The transcoding scheme is simple, and the produced compressed video stream is compatible with currient DCT-based video compression standards.
Îïèñàíî íîâèé ï³äõ³ä äî ðîçðîáêè øâèäêîãî òà ãíó÷êîãî òðàíñêîäåðà â³äåî ñèãíàëó. Çàïðîïîíîâàíèé àëãîðèòì çäàòíèé ãåíåðóâàòè ïðîãðåñóþ÷èé ïîò³ê, ùî äîçâîëÿº çä³éñíþâàòè íàä³éíó ïåðåäà÷ó çàêîäîâàíîãî â³äåî êàíàëàìè çâ'ÿçêó ³ç çì³ííèìè õàðàêòåðèñòèêàìè. Ñõåìà òðàíñêîäåðà ïðîñòà, à îòðèìàíèé ïîò³ê ñóì³ñíèé ç³ ñòàíäàðòàìè êîìïðåñ³¿ â³äåî, ùî áàçóþòüñÿ íà DCT.
ÓÄÊ 681.325.5
P. À. Âîðîáåëü
ÌÅÒÎÄ Â²ÄÍÎÂËÅÍÍß ÇÎÁÐÀÆÅÍÜ ÏÐÈ ÏÎÊÐÀÙÀÍͲ ¯Õ ÊÎÍÒÐÀÑÒÓ
The analysis of methods for restoration of grayscale monochrome images with contrast enhancement is realized. It is shown that restoration of improved input image by smoothed component promote greater contrast enhancement. The examples which illustrate proposed method of image restoration are set.
Ïðîàíàë³çîâàíî ìåòîäè â³äíîâëåííÿ íàï³âòîíîâèõ ìîíîõðîìíèõ çîáðàæåíü ïðè ïîêðàùàíí³ ¿õ êîíòðàñòó. Ïîêàçàíî, ùî â³äíîâëåííÿ ïîë³ïøåíîãî âõ³äíîãî çîáðàæåííÿ ÷åðåç çãëàäæåíó ñêëàäîâó ñïðèÿº ï³äñèëåííþ êîíòðàñòó. Íàâåäåíî ïðèêëàäè, ùî ³ëþñòðóþòü çàïðîïîíîâàíèé ìåòîä.
ÓÄÊ 532.61: 681.327.12.001.33
À. Á. Êìåòü, Ñ. À. Íå÷èïîðóê
ÏÎÏÅÐÅÄÍß ÎÁÐÎÁÊÀ ÇÎÁÐÀÆÅÍÜ Ó ÑÈÑÒÅ̲ ÅÊÑÏÐÅÑ-ÀÍÀ˲ÇÓ ÊÀϲËßÐÍÈÕ ÂËÀÑÒÈÂÎÑÒÅÉ ÐÎÇÏËÀ²Â. ×. 2
Software design questions of automated opto-electronic system for control and measuring of the material's capillary characteristics by the sessile drop method are considered. Utilization possibility and efficiency of a simple geometrical transforms for cut noise and elimination of maculae and dazzles problem's solution on the image preprocessing are shown.
Ðîçãëÿíóòî ïèòàííÿ ïðîãðàìíîãî çàáåçïå÷åííÿ àâòîìàòèçîâàíî¿ îïòîåëåêòðîííî¿ ñèñòåìè êîíòðîëþ ³ âèì³ðþâàííÿ êàï³ëÿðíèõ õàðàêòåðèñòèê ìàòåð³àë³â çà ìåòîäîì ëåæà÷î¿ êðàïë³. Ïîêàçàíà ìîæëèâ³ñòü òà åôåêòèâí³ñòü âèêîðèñòàííÿ ïðîñòèõ ãåîìåòðè÷íèõ ïåðåòâîðåíü äëÿ ïðèäóøåííÿ øóìó é óñóíåííÿ ïëÿì òà áëèì³â ç çîáðàæåííÿ ï³ä ÷àñ ïîïåðåäíüî¿ éîãî îáðîáêè.
ÓÄÊ 681. 786
Ë. ². Ìóðàâñüêèé, Ò. ². Âîðîíÿê, Â. ². Ñìîëÿê, À. Ë. Òõîðóê
ÄÎÑ˲ÄÆÅÍÍß ÏÎÂÅÐÕÍÅÂÈÕ ÄÅÔÎÐÌÀÖ²É ÌÅÒÀ˲×ÍÈÕ ÁÀËÊÎÂÈÕ ÇÐÀÇʲ ÌÅÒÎÄÀÌÈ ÅËÅÊÒÐÎÍÍί ÑÏÅÊË-²ÍÒÅÐÔÅÐÎÌÅÒв¯
The results of experimental study of metal beam specimen's surface strains by electronic speckle interferometry methods are presented. The schemes of experimental setups are described. Obtained results are analyzed.
Íàâåäåíî ðåçóëüòàòè åêñïåðèìåíòàëüíèõ äîñë³äæåíü ïîâåðõíåâèõ äåôîðìàö³é ìåòàë³÷íèõ áàëêîâèõ çðàçê³â ìåòîäàìè åëåêòðîííî¿ ñïåêë-³íòåðôåðîìåòð³¿. Îïèñàíî ñõåìè åêñïåðèìåíòàëüíèõ óñòàíîâîê òà ïðîàíàë³çîâàíî îòðèìàí³ ðåçóëüòàòè.
ÀËÃÎÐÈÒ̲×ÍÅ ÒÀ ÏÐÎÃÐÀÌÍÅ ÇÀÁÅÇÏÅ×ÅÍÍß
ÓÄÊ 681.142.37
². Þ. Þð÷àê, Î. Ì. Ïàâëþê
ÇÀÑÒÎÑÓÂÀÍÍß ÍÅÉÐÎÍÍÈÕ ÌÅÐÅÆ ÄËß ÏÐÎÃÍÎÇÓÂÀÍÍß ×ÈÑÅË ÂÎËÜÔÀ
The problem of processing of solar datas, namely fast forecasting of numbers' Volf with the help of neural 1 networks with not iterative tutoring is shown. Represented three models for a realization of the prognosis of monthly average significances of indexes of signed numbers of solar spots. Graphically represented outcomes of the prognosis.
Âèñâ³òëåíî ïðîáëåìó îáðîáêè ñîíÿ÷íèõ äàíèõ, çîêðåìà øâèäêîãî ïðîãíîçóâàííÿ ÷èñåë Âîëüôà, çà äîïîìîãîþ íåéðîííèõ ìåðåæ ç íå³òåðàö³éíèì íàâ÷àííÿì. Ïîäàíî òðè ìîäåë³ äëÿ ïðîãíîçóâàííÿ ñåðåäíüîì³ñÿ÷íèõ çíà÷åíü ³íäåêñ³â â³äíîñíèõ ÷èñåë ñîíÿ÷íèõ ïëÿì. Ãðàô³÷íî ïðåäñòàâëåíî ðåçóëüòàòè ïðîãíîçó.
ÓÄÊ 519.6
Þ. Ï. Îë³ÿðíèê
ÌÎÄÈÔ²ÊÀÖ²ß ²ÍÒÅÐÂÀËÜÍÎÃÎ ÌÅÒÎÄÓ Ã²ËÎÊ ² ÌÅÆ ÄËß ÇÀÄÀײ ÏÎØÓÊÓ ÃËÎÁÀËÜÍÎÃΠ̲ͲÌÓÌÓ ÔÓÍÊÖ²¯ Ç ÂÈÊÎÐÈÑÒÀÍÍßÌ ÀËÃÎÐÈÒ̲ ËÎÊÀËÜÍί ÎÏÒÈ̲ÇÀÖ¯²
The new global optimization algorithm wich combines the interval branch and bound and local search methods is proposed in this article. New aproach to the "cluster problem" solution using interval analysis and improved partition scheme is considered.
Çàïðîïîíîâàíî íîâèé àëãîðèòì ãëîáàëüíî¿ îïòèì³çàö³¿, ùî áàçóºòüñÿ íà êîìá³íóâàíí³ ³íòåðâàëüíîãî ìåòîäó ã³ëîê ³ ìåæ òà ìåòîä³â ëîêàëüíîãî ïîøóêó. Ðîçãëÿíóòî íîâèé ñïîñ³á âèð³øåííÿ "êëàñòåðíî¿ ïðîáëåìè" çà äîïîìîãîþ ³íòåðâàëüíîãî àíàë³çó òà ïîêðàùåíî¿ ñõåìè ðîçáèòòÿ ìíîæèíè ïîøóêó.
ÓÄÊ 519.67
Â. Ï. Êîæàí, Ñ. Ï. Ñòðÿìåöü, Á. Ò. Äåðêà÷
ÏÅÐÅÒÂÎÐÅÍÍß ÏÀÐÀËÅËÜÍÈÕ ÏÎÒÎʲ ²ÍÔÎÐÌÀÖ²¯
The problem of space-time coordination in macropipeline of special-purpose processors for solving complex problems is considered. Structure of the general -purpose converter is proposed.
Äëÿ âèð³øåííÿ ïðîáëåìè ïðîñòðîâî-÷àñîâîãî óçãîäæåííÿ ó ìàêðîêîíâåºð³ ñïåö³àë³çîâàíèõ îá÷èñëþâà÷³â çàïðîïîíîâàíî ñòðóêòóðó óí³âåðñàëüíîãî êîíâåðòîðà.
Ïîíîâëåíî: 10.02.2004