̲ͲÑÒÅÐÑÒÂΠÎѲÒÈ ² ÍÀÓÊÈ ÓÊÐÀ¯ÍÈ

MINISTRY OF EDUCATION AND SCIENCE OF UKRAINE

 

Êðåìåí÷óöüêèé íàö³îíàëüíèé óí³âåðñèòåò ³ìåí³ Ìèõàéëà Îñòðîãðàäñüêîãî

Kremenchuk Mykhailo Ostrohradskyi National University

 

 

²ÑÍÈÊ ÊÐÅÌÅÍ×ÓÖÜÊÎÃÎ ÍÀÖ²ÎÍÀËÜÍÎÃÎ ÓͲÂÅÐÑÈÒÅÒÓ

²ÌÅͲ ÌÈÕÀÉËÀ ÎÑÒÐÎÃÐÀÄÑÜÊÎÃÎ

 

TRANSACTIONS OF KREMENCHUK MYKHAILO OSTROHRADSKYI NATIONAL UNIVERSITY

 

¹ 1/2014 (84)

 

³ñíèê Êðåìåí÷óöüêîãî íàö³îíàëüíîãî óí³âåðñèòåòó ³ìåí³ Ìèõàéëà Îñòðîãðàäñüêîãî. –

Êðåìåí÷óê: ÊðÍÓ, 2014. – Âèïóñê 1 (84).  184 ñ.

 

TRANSACTIONS ÎF KREMENCHUK MYKHAILO OSTROHRADSKYI NATIONAL UNIVERSITY. 

KREMENCHUK: KRNU, 2014. – ISSUE 1 (84). – 184 P.

 

   ISSN 1995–0519

e-ISSN 2072–8263

 

 

Íàóêîâèé æóðíàë ç 8.07.2009 ð. âíåñåíèé äî Ïåðåë³êó ôàõîâèõ âèäàíü, â ÿêèõ ìîæóòü ïóáë³êóâàòèñÿ ðåçóëüòàòè äèñåðòàö³éíèõ ðîá³ò íà çäîáóòòÿ íàóêîâèõ ñòóïåí³â äîêòîðà ³ êàíäèäàòà òåõí³÷íèõ íàóê.  Æóðíàë íàäñèëàºòüñÿ äî ïðîâ³äíèõ íàóêîâèõ á³áë³îòåê Óêðà¿íè, åëåêòðîííà âåðñ³ÿ æóðíàëó çáåð³ãàºòüñÿ ó Íàö³îíàëüí³é á³áë³îòåö³ Óêðà¿íè ³ìåí³ Â.². Âåðíàäñüêîãî. Æóðíàë ³íäåêñóºòüñÿ ó çàãàëüíîäåðæàâí³é áàç³ äàíèõ «ÓÊÐÀ¯Í²ÊÀ ÍÀÓÊÎÂÀ» (ðåôåðàòèâíèé æóðíàë «ÄÆÅÐÅËλ), ðåôåðàòèâíîìó æóðíàë³ òà áàç³ äàíèõ ²ͲҲ (Ðîñ³éñüêà àêàäåì³ÿ íàóê), à òàêîæ ó ì³æíàðîäíèõ íàóêîìåòðè÷íèõ áàçàõ äàíèõ «ULRICHS PERIODICALS DIRECTORY», «INDEX COPERNICUS» òà «INSPEC».

Äðóêóºòüñÿ çà ð³øåííÿì Â÷åíî¿ ðàäè Êðåìåí÷óöüêîãî íàö³îíàëüíîãî óí³âåðñèòåòó ³ìåí³ Ìèõàéëà Îñòðîãðàäñüêîãî (ïðîòîêîë ¹ 4 â³ä 27.02.2014 ð.). Ñâ³äîöòâî ïðî äåðæàâíó ðåºñòðàö³þ äðóêîâàíèõ çàñîá³â ìàñîâî¿ ³íôîðìàö³¿ ñå𳿠Ê ¹ 18771–7571 ÏÐ â³ä 30.01.2012 ð.

Æóðíàë ïóáë³êóº ï³ñëÿ ðåöåíçóâàííÿ òà ðåäàãóâàííÿ ñòàòò³, ÿê³ ì³ñòÿòü ðåçóëüòàòè äîñë³äæåíü ç ïèòàíü ðîçâèòêó íàóêè, îñâ³òè ³ âèðîáíèöòâà, âïðîâàäæåííÿ íîâèõ ðåçóëüòàò³â ôóíäàìåíòàëüíèõ ³ ïðèêëàäíèõ äîñë³äæåíü ó ãàëóç³ òåõí³÷íèõ, ïðèðîäíè÷èõ, åêîíîì³÷íèõ ³ ãóìàí³òàðíèõ íàóê.

Íàóêîâèé æóðíàë âèäàºòüñÿ ç 1996 ðîêó.

© Êðåìåí÷óöüêèé íàö³îíàëüíèé óí³âåðñèòåò ³ìåí³ Ìèõàéëà Îñòðîãðàäñüêîãî, 2014 ð.

 

 

On 8 July, 2009 the journal was registered in the List of specialized editions for the research results of doctoral and candidate theses in Engineering to be published in. The journal is presented in the top research libraries of Ukraine, electronic version of the journal is included in the Vernadsky National Library of Ukraine. The journal is indexed by national database «UKRAINIKA NAUKOVA» («DZHERELO» abstract journal), VINITI abstract journal and database (Russian Academy of Science), and international databases:«INDEX COPERNICUS», global serials directory «ULRICH’S PERIODICALS DIRECTORY» and «INSPEC».

The journal is published by the decision of the Scientific Council of Kremenchuk Mykhailo Ostrohradskyi National University (Record ¹ 4 of 27.02.2014). Registration Certificate KV¹ 187717571 PR of 30 January, 2012.

 

The journal publishes only peer-reviewed articles, which cover theoretical and experimental aspects of research outcomes in the fields of Engineering, Natural and Economic Sciences, and Humanities.

 

The jonal has been published since 1996.

© Kremenchuk Mykhailo Ostrohradskyi National University, 2014.

 

Åëåêòðîìåõàí³÷í³ ñèñòåìè òà àâòîìàòèçàö³ÿ.

Åëåêòðè÷í³ ìàøèíè ³ àïàðàòè. Åíåðãåòèêà

 

 

ÑÈÍÒÅÇ ÐÅÃÓËßÒÎÐÀ ÒÎÊÀ ÑÈÑÒÅÌÛ ÂÅÊÒÎÐÍÎÃÎ ÓÏÐÀÂËÅÍÈß

ÀÑÈÍÕÐÎÍÍÛÌ ÝËÅÊÒÐÎÄÂÈÃÀÒÅËÅÌ

Î. Ô. Îïåéêî

9

ÎÏÐÅÄÅËÅÍÈÅ ÓÑËÎÂÈÉ ÃÀØÅÍÈß ÔÅÐÐÎÐÅÇÎÍÀÍÑÍÛÕ ÊÎËÅÁÀÍÈÉ Â ÑÅÒßÕ

Ñ ÈÇÎËÈÐÎÂÀÍÍÎÉ ÍÅÉÒÐÀËÜÞ

Þ. Ë. Ñàåíêî, À. Ñ. Ïîïîâ

15

 

 

Íîâ³òí³ ìàòåð³àëè ³ íàíîòåõíîëî㳿

 

 

ÏÐÈÌÅÍÅÍÈÅ, ÏÎËÓ×ÅÍÈÅ  È ÎÏÐÅÄÅËÅÍÈÅ ÎÏÒÈ×ÅÑÊÈÕ ÕÀÐÀÊÒÅÐÈÑÒÈÊ

ÏÎËÓÈÇÎËÈÐÓÞÙÅÃÎ ÀÐÑÅÍÈÄÀ ÃÀËËÈß  

À. Ï. Îêñàíè÷, Ì. Ñ. Àíäðîñþê, Â. À. Òåðáàí

23

ÓÌÅÍÜØÅÍÈÅ ÏÎÃÐÅØÍÎÑÒÈ ÎÏÒÈ×ÅÑÊÎÃÎ ÒÐÀÊÒÀ ÀÂÒÎÌÀÒÈÇÈÐÎÂÀÍÍÎÃÎ
ÊÎÌÏËÅÊÑÀ ÈÇÌÅÐÅÍÈß ÎÑÒÀÒÎ×ÍÛÕ ÍÀÏÐ߯ÅÍÈÉ

Ñ. Ý. Ïðèò÷èí,  Ê. Â. Ìàêàðîâ, À. Ï. Þð÷åíêî

29

ÄÈÀÃÍÎÑÒÈÊÀ ÍÅÁËÀÃÎÏÐÈßÒÍÛÕ ÑÈÒÓÀÖÈÉ Â ÏÐÎÖÅÑÑÅ ÂÛÐÀÙÈÂÀÍÈß ÌÎÍÎÊÐÈÑÒÀËËÎÂ ÏÎËÓÏÐÎÂÎÄÍÈÊÎÂ

È. Â. Øåâ÷åíêî, Ñ. À. Ãðèöàêîâ, Í. Í. Äûì÷åíêî

34

 

 

Åíåðãî- òà ðåñóðñîçáåð³ãàþ÷³ òåõíîëî㳿

 

 

ÃÈÁÐÈÄÍÛÉ ÈÑÒÎ×ÍÈÊ ÏÈÒÀÍÈß ÄËß ÑÈÑÒÅÌÛ ÎÐÈÅÍÒÀÖÈÈ ÑÎËÍÅ×ÍÛÕ ÁÀÒÀÐÅÉ

Â. Þ. Èçîòîâ, Í. È. Êëþé, À. Â. Ìàêàðîâ, Ä. Ñ. Ãàâðèêîâ, Â. À. Ãàíóñ, Õàíü Âýé

44

 

 

²íôîðìàö³éí³ ñèñòåìè ³ òåõíîëî㳿. Ìàòåìàòè÷íå ìîäåëþâàííÿ

 

 

Îö³íêà íàïðÿìê³â ä³ÿëüíîñò³ òà âèçíà÷åííÿ ðåçåðâ³â
ñîö³àëüíî-åêîíîì³÷íî¿ ñèñòåìè

Ò. Â. Ëóê’ÿíåíêî

49

USE OF DIFFERENT METHODS FOR SCENARIO FORECASTING

OF ECONOMIC AND MATHEMATICAL ANALYSIS ON THE EASTERN EUROPE EXAMPLE

O. Tarasova

55

ÄÎÑË²ÄÆÅÍÍß ÀÏÀÐÀÒÍÎ-ÎвªÍÒÎÂÀÍÎÃÎ ÌÅÒÎÄÓ ÐÎÇÐÀÕÓÍÊÓ

ÂÈÑÎÊÎ×ÀÑÒÎÒÍÈÕ ÖÈÔÐÎÂÈÕ Í²Õ Ô²ËÜÒвÂ

Ì. Â. Îëåêñ³â

63

ÌÎÄÅËÜ ÏÎÄÑÈÑÒÅÌÛ ÔÎÐÌÈÐÎÂÀÍÈß ÎÏÒÈÌÀËÜÍÎÃÎ ÑÎÑÒÀÂÀ ÈÇÄÅËÈß

ÏÐÈ ÈÍÄÈÂÈÄÓÀËÜÍÎÌ ÇÀÊÀÇÅ ÍÀ ÌÀØÈÍÎÑÒÐÎÈÒÅËÜÍÎÌ ÏÐÅÄÏÐÈßÒÈÈ

È. Â. Øåâ÷åíêî, Ñ. Ñ. Êî÷åðãèíà

69

ÊÎÍÒÐÎËÜ ÏÎØÓÊÓ Ð²ØÅÍÜ ÒÅÕÍÎËÎò×ÍÈÕ ÏÐÎÁËÅÌ ÏÐÎÖÅÑÓ ÁÓвÍÍß, ÔÎÐÌÀ˲ÇÎÂÀÍÈÕ ÍÀÊËÀÄÀÍÍßÌ ²ªÐÀÐÕ²¯ ÎÁÌÅÆÅÍÜ

Ð. Á. Âîâê

76

 

 

Ñó÷àñí³ òåõíîëî㳿 â ìàøèíîáóäóâàíí³, òðàíñïîðò³ òà ã³ðíèöòâ³

 

 

 

ïîâûøåíèå ñòàáèëüíîñòè ïðîöåññà ÃÈÁÊÈ ÁÈÌÅÒÀËËÈ×ÅÑÊÈÕ ÄÓà ÏÀÑÑÀÆÈÐÑÊÈÕ ÂÀÃÎÍÎÂ

Ì. Â. Çàãèðíÿê, À. À. Øàïîâàë, Å. À. Íàóìîâà, À. Â. Ëèòâèíåíêî, Â. Â. Äðàãîáåöêèé,  

Â. Ì. Áóãàé÷óê,À. È. Êóëèê

83

ÄÎÑË²ÄÆÅÍÍß òðèáîòåõí³÷íèõ ìàòåð³àë³â ñèñòåì T³Fe-xC òà T³c-xFe,
ÎÒÐÈÌÀÍÈÕ
ñàìîïîøèðþþ÷èì âèñîêîòåìïåðàòóðíèì ñèíòåçîì

Î. Î. Îíèùóê

90

Îöåíêà èçìåíåíèÿ ôèëüòðàöèîííûõ ñâîéñòâ äåôîðìèðóåìîãî ìàññèâà

â ðåçóëüòàòå ìíîãîêðàòíîé ïîäðàáîòêè

Í. À. Äóáðîâà

96

Çàáåçïå÷åííÿ ð³çàííÿ ïðè çâîðîòíîìó ðóñ³ äåôîðìóþ÷å-ð³æó÷î¿ ïðîòÿæêè
äëÿ îáðîáêè îòâîð³â ó äåòàëÿõ ³ç ÷àâóíó

Ï. Ì. ªðüîì³í, À. Ì. Êèðè÷åíêî, À. ². Ãðå÷êà

107

ÂÛÁÎÐ È ÈÑÑËÅÄÎÂÀÍÈÅ ÐÀÖÈÎÍÀËÜÍÎÉ ÑÒÐÓÊÒÓÐÛ ÃÈÁÊÎÉ ÀÂÒÎÌÀÒÈÇÈÐÎÂÀÍÍÎÉ ËÈÍÈÈ ÑÁÎÐÊÈ ÑÈËÎÂÛÕ ÀÃÐÅÃÀÒÎÂ ÍÀ ÌÅËÈÒÎÏÎËÜÑÊÎÌ ÌÎÒÎÐÍÎÌ ÇÀÂÎÄÅ

Â. Ì. Ëèïêà, Â. ß. Êîïï, Þ. Ë. Ðàïàöêèé

112

Ìîäåëèðîâàíèå ïåðåíîñà ïðîïàíòÀ

â èçìåíÿþùÅÉ ÊÎÍÔÈÃÓÐÀÖèþ òðåùèíÅ ãèäðîðàçðûâà

È. À. Ñàäîâåíêî, À. Â. Èíêèí

119

Î ÂËÈßÍÈÈ ÊÎÍÑÒÐÓÊÖÈÈ ÇÀÐßÄÀ ÍÀ ÕÀÐÀÊÒÅÐ ÐÀÇÂÈÒÈß ÍÀ×ÀËÜÍÎÉ ÑÒÀÄÈÈ ÐÀÇÐÓØÅÍÈß ÒÂÅÐÄÛÕ ÑÐÅÄ

Â. Â. Âîðîáüåâ, Ì. Â. Ïîìàçàí

124

ÏÐÎÑÒÎÐβ ÑÈÑÒÅÌÈ ÏÐÈÂÎÄ²Â Ó ÂÈÃËßIJ ÐÓÕÎÌÈÕ ÒвÀÍÃÓËßÐÍÈÕ ÑÒÐÓÊÒÓÐ

C. Â. Ñòðóòèíñüêèé

130

ÂÏËÈ ÊÎÍÑÒÐÓÊÖ²¯ ×ÅÐÂ’ß×Íί ÔÐÅÇÈ ²Ç ÏÎIJËÅÍÈÌ ÇÀ ÂÈÑÎÒÎÞ ÏÐÎÔ²ËÅÌ ²ÍÑÒÐÓÌÅÍÒÀËÜÍί ÐÅÉÊÈ ÍÀ ÃÅÎÌÅÒÐ²Þ ×ÅÐÂ’ß×ÍÎÃÎ ÊÎËÅÑÀ

Î. ². Ïîïîâà, Ì. ². Ïîïîâà

138

ÌÀËÎÃÀÁÀÐÈÒÍÈÉ ÏÐÈÑÒÐ²É ÄËß ÊÎÌÏËÅÊÑÍÎÃÎ ÂÏËÈÂÓ

ÍÀ ÏÐÈÂÈÁ²ÉÍÓ ÇÎÍÓ ÏËÀÑÒÀ

Î. Ã. Äðà÷óê

144

Phenomena of filtration inversion and depth erosion of technogenic loaded loess slopes

I. Sadovenko, N. Derevyagina

150

ÐÎÇÐÎÁÊÀ ÅÔÅÊÒÈÂÍÈÕ ² ÑÅÉÑÌÎÁÅÇÏÅ×ÍÈÕ ÑÕÅÌ ÊÎÐÎÒÊÎÑÏβËÜÍÅÍÎÃΠϲÄÐÈÂÀÍÍß Ç ÍÅÅËÅÊÒÐÈ×Íί ÑÈÑÒÅÌÈ ²Í²Ö²ÞÂÀÍÍß Â ÀͲÇÎÒÐÎÏÍÈÕ ÏÎÐÎÄÀÕ

Â. Â. Áîéêî, Ñ. Þ. Áîãóöüêèé, Ò. Â. Õëåâíþê, Â. Ì. Âîçíþê

154

Ðîçøèðåííÿ òåõíîëîã³÷íèõ ìîæëèâîñòåé ã³äðîñòðóìèííîãî îáëàäíàííÿ

íà îñíîâ³ íîâèõ êîìïîíóâàëüíèõ ð³øåíü

Î. Ô. Ñàëåíêî, Â. Ì. Îðåë

160

 

 

ÇÅÌËÅÂÏÎÐßÄÊÓÂÀÍÍß ÒÀ ÊÀÄÀÑÒÐ. ÁÓIJÂÍÈÖÒÂÎ

 

 

 

ÀÏвÎÐÍÅ ÐÀÍÆÓÂÀÍÍß ÔÀÊÒÎв ÂÏËÈÂÓ ÍÀ Ô²ÇÈÊÎ-ÃÅÎËÎò×Ͳ ÏÐÎÖÅÑÈ

ÏÐÈ ÐÎÇÐÎÁÖ² ÐÎÄÎÂÈÙ ÊÎÐÈÑÍÈÕ ÊÎÏÀËÈÍ Â²ÄÊÐÈÒÈÌ ÑÏÎÑÎÁÎÌ

Â. Â. Àðòàìîíîâ,  Ì. Ì. Íàç³ìêîâ, Ì. Ã. Âàñèëåíêî

169

 

 

ÇÂÅÐÍÅÍÍß ÄÎ ÀÂÒÎвÂ

177

ÂÈÌÎÃÈ ÄÎ ÎÔÎÐÌËÅÍÍß ÑÒÀÒÅÉ

180

ÑÏÈÑÎÊ ÀÂÒÎвÂ

183

 

 

 

ELECTROMECHANICAL SYSTEMS AND AUTOMATION.

ELECTRIC MACHINES AND DEVICES. POWER ENGINEERING

 

 

 

THE CURRENT REGULATOR SYNTHESIS FOR INDUCTION MOTOR VECTOR CONTROL

O. Opeiko

9

DETERMINATION OF THE CONDITIONS OF FERRORESONANCE OSCILLATIONS DAMPING IN ISOLATED NEUTRAL SYSTEMS

Y. Sayenko, A. Popov

15

 

 

ADVANCED MATERIALS AND NANOTECHNOLOGIES

 

 

 

SEMIINSULATING GALLIUM ARSENIDE, APPLICABILITY, OBTAINMENT AND DEFINITIONS OF OPTICAL CHARACTERISTICS

À. Îksanych, Ì. Àndrosiuk, V. Òerban

23

REDUCE OF THE ERROR OF THE OPTICAL PATH OF AUTOMATED COMPLEX
RESIDUAL STRESS MEASUREMENT

S. Prytchin, K. Makarov, A. Yurchenko

29

ADVERSE SITUATION DIAGNOSTICS IN THE PROCESS OF SINGLE-CRYSTAL SEMICONDUCTORS GROWING

I. Shevchenko, S. Grishakov, N. Dymchenko

34

 

 

ENERGY- AND RESOURCE-SAVING TECHNOLOGIES

 

 

 

HYBRID POWER SOURCE FOR ORIENTATION SYSTEM OF SOLARBATTERIES

V. Izotov, N. Klyui, A. Makarov, D. Gavrikov, V. Gànus, Han Wei

44

 

 

INFORMATION SYSTEMS AND TECHNOLOGIES. MATHEMATICAL MODELING

 

 

 

ESTIMATION OF BUSINESS DIMENSIONS AND RESERVES OF SOCIAL AND ECONOMIC SYSTEM

T. Lukyanenko

49

USE OF DIFFERENT METHODS FOR SCENARIO FORECASTING OF ECONOMIC AND MATHEMATICAL ANALYSIS ON THE EASTERN EUROPE EXAMPLE

O. Tarasova

55

The research of the HARDWARE ORIENTED METHOD OF high frequency DIGITAL IIR FILTERS CALCULATION

M. Oleksiv

64

THE MODEL OF A SUBSYSTEM FORMING THE TAILORED COMPOSITION OF ARTICLES FOR CUSTOM PRODUCTION AT ENGINEERING ENTERPRISES

I. Shevchenko, S. Kochergina

69

THE SOLUTION FINDING CONTROL FOR DRILLING TECHNOLOGICAL PROBLEMS FORMALIZED BY THE CONSTRAINTS HIERARCHIES IMPOSED

R. Vovk

76

 

 

ADVANCED TECHNOLOGIES IN MACHINE CONSTRUCTION,

TRANSPORT AND MINING INDUSTRIES

 

 

 

increasing stability of bending bimetallic carlines of passenger cars

M. Zagirnyak, À. Shapoval, E. Naumova, À. Litvinenko, V. Dragobetskiy, V. Bugaychuk, À. Kulik

83

RESEARCH of the tribotechnical materials of TiFe-xC AND TiC-xFe SYSTEMS obtained by self-propagating high-temperature SYNTHESIS

O. Onyschuk

90

Measurement of change of rock mass filtration characteristics in consequence of long-time repeated mining

N. Dubrova

96

PROVIDING the backstroke CUTTING for DEFORMIng-CUTTING broaching of bores In CAST-IRON parts

P. Eryomin, A. Kyrychenko, A. Grechka

107

SELECTION AND RESEARCH OF RATIONAL STRUCTURE OF THE FLEXIBLE AUTOMATED ASSEMBLY LINE OF POWER UNITS AT MELITOPOL MOTOR PLANT

V. Lipka, V. Kopp, Ju. Rapatskiy

112

MODELING OF PROPPING AGENT TRANSPORT IN a cRack
changing the form due to hydraulic fracturing

I. Sadovenko, O. Inkin

119

ON THE INFLUENCE OF CHARGE CONSTRUCTION ON THE CHARACTER

OF THE INITIAL STAGE OF SOLID MEDIUMS DESTRUCTION

V. Vorobyov, M. Pomazan

124

SPATIAL DRIVES SYSTEMS AS MOVABLE TRIANGULAR STRUCTURES

S. Strutins'kij

130

INFLUENCE OF THE DESIGN OF THE HOB WITH A HEIGHT-SPLIT PROFILE

OF THE TOOL RACK ON THE GEOMETRY OF A WORM-WHEEL

O. Popova, M. Popova

138

SMALL-SIZED DEVICE FOR COMPLEX IMPACT TO BOTTOM-HOLE REGION

O. Drachuk

144

Phenomena of filtration inversion and depth erosion of technogenic loaded loess slopes

I. Sadovenko, N. Derevyagina

150

DEVELOPMENT OF THE EFFECTIVE AND SEISMIC SAFE SCHEMES

OF NON-ELECTRIC SHORT-DELAY BLASTING IN ANISOTROPIC ROCKS

V. Boyko, S. Bogutskiy, T. Hlevnuk, V. Voznuk

154

ENHANCING TECHNOLOGICAL CAPABILITIES OF HYDRAJETTING EQUIPMENT

BASED ON NEW LAYOUT SOLUTIONS

O. Salenko, V. Orel

160

 

 

LAND-USE MANAGEMENT AND CADASTRE.

CIVIL ENGINEERING

 

 

 

A PRIORI RANGING OF INFLUENCING FACTORS ON PHYSICAL AND GEOLOGICAL PROCESSES WHILE EXPLOITING MINERAL ORES IN OPEN MINES

V. Artamonov, M. Nazimkov, M. Vasilenko

169

 

 

Introductory word

177

GUIDELINCE FOR authors

180

List of authors

183