Претрага
394 items
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Optimisation of underground mine decline development system using genetic algorithm
... s s s sf x y z x y z f x y z f x y z x y z f x y z (2) where 2 2 2 1 1 , , n i i i i i i i f x y z c R x x y y z z (3) 2 2 2 2 1 , , , , , n s s s d i s s s i f x y z x y z d c R x x y y z z ...
... n s s s s i m s m s m s i f x y z s c R x x y y z z (5) has to be minimized, subject to max 2 2 i i i z z r x x y y (6) max 2 2 s s s z z r x x y y (7) ...
... max 2 2 m s m s m s z z x x y y (8) min max s s sx x x (9) min max s s sy y y (10) min max s s sz z z (11) where x, y, z - location (coordinates) of the underground mass concentration ...Zoran Gligorić, Aleksandar Ganić, Rade Tokalić, Aleksandar Milutinović. "Optimisation of underground mine decline development system using genetic algorithm" in Underground mining engineering, Beograd : Univerzitet u Beogradu – Rudarsko–geološki fakultet (2014)
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Pb-doped y-Bi2O3 phase in the Bi2O3- PbO phase diagram - Област y-Bi2O3 фазе допиране оловом у фазном дијаграму Bi2O3- PbO
Dapčević Aleksandra, Poleti Dejan, Karanović Ljiljana. "Pb-doped y-Bi2O3 phase in the Bi2O3- PbO phase diagram - Област y-Bi2O3 фазе допиране оловом у фазном дијаграму Bi2O3- PbO" in XVIII Konferencija Srpskog kristalografskog društva, Izvodi radova, Andrevlje, Srbija:Srpsko kristalografsko društvo (2011): 36-37
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Structural transformations of hydrothermaly synthesized a-Li2-xTiO3-0.5x•(H2O)y - Структурне трансформације хидротермално синтетисаних a-Li2-xTiO3-0.5x•(H2O)y
Veljković Ivana, Poleti Dejan, Karanović Ljiljana, Rogan Jelena. "Structural transformations of hydrothermaly synthesized a-Li2-xTiO3-0.5x•(H2O)y - Структурне трансформације хидротермално синтетисаних a-Li2-xTiO3-0.5x•(H2O)y" in XVIII Konferencija Srpskog kristalografskog društva, Izvodi radova, Andrevlje, Srbija:Srpsko kristalografsko društvo (2011): 34-35
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Sinteza i strukturna karakterizacija nanoprahova opšte formule Ca1-xRExMnO3 (RE=Y| La)
Jelena Zagorac (2011)Jelena Zagorac. Sinteza i strukturna karakterizacija nanoprahova opšte formule Ca1-xRExMnO3 (RE=Y| La), Beograd:Rudarsko-geološki fakultet, 2011
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The Newton method for solving nonlinear equations based on aggregation operators
Nebojša M. Ralević, Dejan Ćebić (2019)Nebojša M. Ralević, Dejan Ćebić. "The Newton method for solving nonlinear equations based on aggregation operators" in XLVI International Symposium on Operational Research SYM-OP-IS, Kladovo, 15-18.9.2019, Универзитет у Београду (2019)
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Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series
Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić (2021)Underground mining engineers and planners in our country are faced with extremely difficult working conditions and a continuous shortage of money. Production disruptions are frequent and can sometimes last more than a week. During this time, gate road support is additionally exposed to rock stress and the result is its progressive deformation and the loss of functionality of gate roads. In such an environment, it is necessary to develop a low-cost methodology to maintain a gate road support system. ...deformacije podgrade, lasersko skeniranje, višekanalna singularna spektralna analiza, prognoza, klasterisanje fuzzy vremenskih serija... Note also that the structure of the matrix YVYT V , is as follows: YVYT V = Y(1)Y(1)T Y(1)Y(2)T · · · Y(1)Y(M)T Y(2)Y(1)T Y(2)Y(2)T · · · Y(2)Y(M)T ... ... . . . ... Y(3)Y(1)T Y(3)Y(2)T · · · Y(3)Y(M)T , (7) The structure of the matrix YVYT V is similar to the variance-covariance ...
... multidimensional matrix [ Y(i) 1 , . . . , Y(i) Ki ] with vectors Y(i) j =( x(i)j , . . . , x(i)j+Li+1 )T ∈ RLi , where Li(1 < Li < Ni) is the window length for each series with length Ni and Ki = Ni − Li+1. The result of this step is the trajectory matrix Y(i) =[ Y(i) 1 , . . . , Y(i) Ki ] = (ymn) Li ...
... order ay, 2 ...Ay. yYOyQT yQAy@ro... yA)y(M)T YAyQT yy2T ... y2)y(M)T Wy = . Dok . (7) yYOYUT y@yQT ... y@)y(Myr The structure of the matrix wy is similar to the variance-covariance matrix in the classical multivariate statistical analysis literature. The matrix Y YT, which is used in the univariate ...Luka Crnogorac, Rade Tokalić, Zoran Gligorić, Aleksandar Milutinović, Suzana Lutovac, Aleksandar Ganić. "Gate Road Support Deformation Forecasting Based on Multivariate Singular Spectrum Analysis and Fuzzy Time Series" in Energies, MDPI (2021). https://doi.org/https://doi.org/10.3390/en14123710
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Преносници снаге на рударским машинама
Предраг Јованчић, Стеван Ђенадић (2023)Предраг Јованчић, Стеван Ђенадић. Преносници снаге на рударским машинама, Београд : Универзитет у Београду, Рударско-геолошки факултет, 2023
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A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice
Ventilation system analysis is a complex process based on the calculation and analysis of numerous parameters. These problems can be successfully solved by the SimVent numerical package, but a full understanding and use of the obtained results require the involvement of an experienced specialist in the ventilation field. The solution was found in the creation of a hybrid system INVENTS, whose knowledge base represents a formalization of the expert knowledge in the mine ventilation field. In this paper, we ...... s y s tem es tima tion v entila tion s imu la tion De s ig n CFD Estimates es tima tion o f gas and d u st emi s sion and temperature c onditions f low p roc es s modelling u sing CFD Dat a acqu is i t io n v entila tion and p s y chromet ri c parame te rs v entila tion and p s y chromet ...
... 1 4 . T h e a ir d is tr ib u ti o n o b ta in ed b y st a n d a rd m et h o d . M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 /1 5 . F ...
... T h e a ir d is tr ib u ti o n o b ta in ed b y G A w it h b o o st er fa n lo ca ti o n . M in . R es . E n g . 2 0 0 2 .1 1 :3 6 1 -3 8 2 . D o w n lo ad ed f ro m w w w .w o rl d sc ie n ti fi c. co m b y U N IV E R S IT Y O F A L B E R T A o n 0 4 /2 6 /1 ...Nikola Lilić, Ivan Obradović, Ranka Stanković. "A Knowledge-Based Approach to Mine Ventilation Planning in Yugoslav Mining Practice" in Mineral Resources Engineering 11 no. 4, Imperial College Press (2002): 361-382. https://doi.org/10.1142/S0950609802001014
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Named Entity Recognition for Distant Reading in ELTeC
Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković (2020)Akcija COST „Udaljeno čitanje za evropsku književnu istoriju“, koja je počela 2017. godine, ima među svojim glavnim ciljevima stvaranje višejezične zbirke evropskih književnih tekstova (ELTeC) otvorenog koda. U ovom radu predstavljamo rad koji je obavljen na ručnom označavanju selekcije ELTeC kolekcije za imenovane entitete, kao i na proceni postojećih alata za prepoznavanje imenovanih entiteta u pogledu njihove sposobnosti da automatski urade takve anotacije. U poslednjem paragrafu se razmatraju zajedničke tačke između ove inicijative i CLARIN-a.... W e b e lie v e th is is b e c a u s e o n ly th e e a s y c a se s a re c a te re d fo r b y sp a C y , a n d th o s e c a s e s d o n o t d e p e n d to o m u c h o n o rto g ra p h y . English: In sp aC y , to k e n iz a t io n is s u e s d u e to T E I X M L ta g s ...
... p a re d to a n n o ta t io n s p ro d u c e d b y th e s e to o ls b y u s in g a s h a re d e v a lu a tio n s c r ip t, th u s g u a ra n te e in g th e c o n s is - te n c y w ith th e a g re e d u p o n s tra te g y fo r id e n tify in g h its a n d m is s e s in ...
... and Visualization Tools 40 French: T h e m a n u a l c o rp u s c o n ta in s m a n y P E R S a n d fe w e r L O C a n n o ta t io n s . H o w e v e r , s p a C y - f ra a n n o ta te s to o m a n y L O C h e n c e th e lo w p re c is io n fo r th is ca te g o ry , a n d S E M ...Francesca Frontini, Carmen Brando, Joanna Byszuk, Ioana Galleron, Diana Santos, Ranka Stanković. "Named Entity Recognition for Distant Reading in ELTeC" in CLARIN Annual Conference 2020, Oct 2020, Virtual Event, France, CLARIN (2020)
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Crystal structure of K3EuSi2O7
alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu... 106.7 (2) ix−y, −y, z; ii−y+1, x−y, z; iii−x+1, −x+y, z; ivy, −x+y, −z; vx, x−y, −z; v−x+1, −x+y, −z+1/2; viix−y, −y, −z+1/2; viiiy, x−1, z; ixy, x−1, −z+1/2; x−x+y, y, −z; xiy, x, z; xii−y, −x, −z; xiii−x, −y, −z; xivx−y, x−1, −z; xv−x+1, −y, −z; xviy, x, −z+1/2; xviix, y, −z+1/2; (xviiiy+1 ...
... SEM analysis. The compound crystallizes like disilicates containing the larger REEs, i.e. Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Y, with the exception of Er and Y, which can crystallize as polymorphs in space groups P63/mcm and P63/mmc. Their effective ionic radii range from 0.983 Å for VINd3+ ...
... 1007/978-3-642-50076-3 http://www.mathnet.ru/links/df924f2db1305a2430f200e3f58341c7/dan30741.pdf 10 KOVAČ et al. 12. M. S. Hwang, H. Y.-P. Hong, M. C. Cheng, Y. Wang, Acta Cryst. C43 (1987) 1241 (https://doi.org/10.1107/S0108270187092308) 13. I. Vidican, M. Smith, M., H.-C. zur Loye, J. Solid ...Sabina Kovač, Predrag Dabić, Aleksandar Kremenović. "Crystal structure of K3EuSi2O7" in Journal of the Serbian Chemical Society, National Library of Serbia (2021). https://doi.org/10.2298/JSC210218026K
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Specifičnosti fundiranja u lesnim naslagama – objekat Poreska uprava Zemun
Anja Dević (2024)U ovom završnom radu prikazani su literaturni podaci koji se odnose na geotehničke karakteristike terena izgrađenih od lesa na primeru šireg istražnog prostora, tzv. Zemunskog lesnog platoa, kao i rezultati detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun. U prvom delu rada prikazani su uslovi nastanka karakteristične makroporozne strukture lesa i njen uticaj na fizičko-mehaničke karakteristike i stabilnost terena izgrađenih od lesa. Na osnovu analize i interpretacije rezultata detaljnih geotehničkih istraživanja na lokaciji objekta Poreske uprave Zemun prikazane su ...... 95.2 + y+ * 1.6 = 95.2 + 17 * 1.6 = 95.2 + 27.2 = 122.4kPa b: o = 122.4 + y- * 0.75 = 122.4 + 18 * 0.75 = 122.4 + 13.5 = 135.9 kPa 6: b, = 135.9 + y- * 0.75 = 135.9 + 18 * 0.75 = 135.9 + 13.5 = 149.4kPa 7: o = 149.4 + ya * 2.8 = 149.4 + 17 * 2.8 = 149.4 + 47.6 = 197 kPa 8:Bo = 197 + y};3*2.8 ...
... određuje se na osnovu Jednačine: qf=c:·Nc:sc·:dc·ic+y· Df·: Nq:sq:dq:iq+0.5·y· B: Ny:sy:dy' iy Gde je: qr — granično opterećenje tla (kPa) Nce, Na, Ny - faktori nosivosti temelja C – dozvoljena kohezija (kPa) Sc-, Sq, Sy — faktori oblika temelja y — zapreminska težina (kN/m3) dc, da, dy – faktori ...
... 2 + 37.4 = 344.6 kPa 13: po = 344.6 + y * 0.5 = 344.6 + 18 * 0.5 = 344.6 + 9 = 353.6 kPa 14: po = 353.6 + ye * 0.5 = 353.6 + 18 * 0.5 = 353.6 +9 = 362.6 kPa 15: po = 362.6 + y * 1.65 = 362.6 + 17 * 1.65 = 362.6 + 28.05 = 390.65 kPa 16: po = 390.65 + y; * 1.65 = 390.65 + 17 • 1.65 = 390.65 + 28 ...Anja Dević. Specifičnosti fundiranja u lesnim naslagama – objekat Poreska uprava Zemun, 2024
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Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja
Predrag Z. Dabić (2022)Predmet i ciljevi naučnog istraživanja ove doktorske disertacije su sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja. Istraživanja su izvedena u okviru sistema SiO2–REE2O3–XF, gde REE predstavlja trovalentni katjon elementa retkih zemalja (Sc, Y, Sm, Eu, Gd, Ho, Er, Tm, Yb, Lu), dok X predstavlja jednovalentni katjon alkalnih metala (K, Cs). Rad na disertaciji bio je fokusiran na sintezu monokristala, određivanje kristalnih struktura, kao i na kristalografsko i kristalohemijsko ispitivanje sintetisanih monokristala. Monokristali su sintetisani ...alkalni silikati elemenata retkih zemalja, kristalna struktura, sinteza metodom fluksa, rendgenska difrakcija na monokristalu, elementi retkih zemaljaPredrag Z. Dabić. Sinteza i strukturna karakterizacija novih cezijumskih i kalijumskih silikata sa elementima retkih zemalja, Beograd : P. Dabić, 2022
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Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata
Sabina Z. Kovač (2015-09-28)Predmet rada i istraživanja ove doktorske disertacije su sinteza i strukturnekarakteristike novih kristalnih arsenata i fosfata koji sadrže Mg, K, Ca, Mn, Fe, Co, Ni,Cu, Zn, Sr, Ba i druge katjone. U strukturama arsenata i fosfata, AsO4- i PO4-tetraedrinajčešće se vezuju sa tetraedarski ili oktaedarski koordinisanim katjonima prelaznihmetala formirajući otvorene strukture (slojeve ili 3D mreže) sa širokim opsegomrazličitih topologija. U šupljinama ili porama u obliku povezanih ili nepovezanihkanala, tunela, kaveza i međuslojnog prostora mogu se ugraditi različiti vanmrežni joni(obično ...... Simetrijski kodovi: (i) –x, y, ‒z‒1/2; (ii) ‒x+1/2, y, z‒1/2; (iii) ‒x, y, ‒z+1/2; (iv) x, ‒y+1, z+1/2; (v) ‒x, ‒y, ‒z; (vi) x, ‒y+1, z‒1/2; (vii) ‒x+1/2, y, z+1/2; (viii) ‒x+1/2, ‒y+1, z; (ix) ‒x, ‒y+1, ‒z; (x) x+1/2, ‒y, ‒z+1/2; (xi) x, ‒y, z+1/2; (xii) ‒x+1/2, ‒y, z. Tabela 24. Sume valenci ...
... tačkastim linijama. Simetrijski kodovi: (i) x, y+1, z; (ii) x‒1/2, ‒y‒1/2, z‒1/2; (iii) ‒x+1/2, y‒3/2, ‒z‒1/2; (iv) ‒x, ‒y, ‒z; (v) ‒x+1/2, y‒1/2, ‒z‒1/2; (vi) ‒x, ‒y‒1, ‒z; (vii) x, y‒1, z; (viii) ‒x+1, ‒y+1, ‒z; (ix) ‒x, ‒y+1, ‒z; (x) ‒x+1, ‒y, ‒z; (xi) x‒1/2, ‒y+1/2, z+1/2. Sinteza i strukturna ...
... O3‒Cu1 0,08 Simetrijski kodovi: (i) −x+1, −y, −z+1; (ii) −x+3/2, y+1/2, −z+1/2; (iii) x−1/2, −y+1/2, z−1/2; (iv) −x+1/2, y+1/2, −z+1/2; (v) −x+1, −y, −z; (vi) x−1, y, z; (vii) x+1, y, z; (ix) −x+1/2, y−1/2, −z+1/2; (xii) −x+3/2, y−1/2, −z+1/2; (xvii) x+1/2, −y+1/2, z+1/2. Atom bakra, koji se ...Sabina Z. Kovač. "Sinteza i strukturna karakterizacija mikroporoznih arsenata i fosfata" in Универзитет у Београду, Универзитет у Београду, Рударско-геолошки факултет (2015-09-28)
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Povećanje iskorišćenja ležišta Y" primenom metode cikličnog utiskivanja vodene pare"
Mišo Soleša (1988)Mišo Soleša. Povećanje iskorišćenja ležišta Y" primenom metode cikličnog utiskivanja vodene pare", Beograd:Rudarsko-geološki fakultet, 1988
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The external aggregation Newton's method for solving nonlinear equations and applications
Marija Paunović, Dejan Ćebić, Nebojša Ralević. "The external aggregation Newton's method for solving nonlinear equations and applications" in The University Thought - Publication in Natural Sciences, Centre for Evaluation in Education and Science (CEON/CEES) (2020). https://doi.org/10.5937/univtho10-24982
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Using English Baits to Catch Serbian Multi-Word Terminology
In this paper we present the first results in bilingual terminology extraction. The hypothesis of our approach is that if for a source language domain terminology exists as well as a domain aligned corpus for a source and a target language, then it is possible to extract the terminology for a target language. Our approach relies on several resources and tools: aligned domain texts, domain terminology for a source language, a terminology extractor for a target language, and a ...aligned texts, word alignment, terminology extraction, electronic dictionaries, morphological inflection... ed Se rb ia n D ic ti on ar y E ng lis h D ic ti on ar y R es ul t se ts M W T bi bl io te čk ih ud ru že nj a sa bi bl io te čk iu dr už en je bi bl io te čk iu dr už en je bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi bl io te ...
... dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s bi bl io te čk a as oc ij ac ij a ni je bi bl io te čk ia so ci ja ci ja bi bl io te čk ia so ci ja ci ja bi bl io te ka dr uš tv o as so ci at io n li br ar y 1, 3, 5, 6 ye s ud ru že nj a ia so ci ...
... io te čk i in fo rm a- ci on is is te m li br ar y in fo rm at io n sy s- te m 1, 2, 3, 4 bi bl io te ka m ed ij at ek a bi bl io te ka m ed ij at ek a bi bl io te čk i in fo rm a- ci on is is te m li br ar y in fo rm at io n sy s- te m 1 dr ug im bi bl io ...Cvetana Krstev, Branislava Šandrih, Ranka Stanković. "Using English Baits to Catch Serbian Multi-Word Terminology" in Proceedings of the 11th International Conference on Language Resources and Evaluation, LREC 2018, Miyazaki, Japan, May 7-12, 2018, European Language Resources Association (ELRA) (2018)
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SEM-EDS analysis and microindentation hardness study of Zr-doped X2Y3 (X=Bi, Sb; Y=Te, Se) p-type semiconductor
Požega Emina, Marković Ivana, Vuković Nikola. "SEM-EDS analysis and microindentation hardness study of Zr-doped X2Y3 (X=Bi, Sb; Y=Te, Se) p-type semiconductor" in Proceedings of the 45th International October Conference on Mining and Metallurgy, Bor:Univerzitet u Beogradu – Tehnički fakultet u Boru (2013): 600-603
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Unstable regime of Dinaric karst aquifers as a major concern for their sustainable utilization
Pekaš Željko, Jolović Boban, Radojević Dragan, Pambuku Arben, Stevanović Zoran, Kukuric Neno, Zubac Y. (2012)Pekaš Željko, Jolović Boban, Radojević Dragan, Pambuku Arben, Stevanović Zoran, Kukuric Neno, Zubac Y.. "Unstable regime of Dinaric karst aquifers as a major concern for their sustainable utilization" in Book of abstracts of 39 IAH Congress, Niagara Falls, Niagara Falls:International Association of Hydrogeologists Canadian National Chapter (2012)
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Variation of olivine composition in the volcanic rocks in the Songliao basin, NE China: lithosphere control on the origin of the K-rich intraplate mafic lavas
Zhang, L.-Y., Prelević Dejan, Li, N., Mertz-Kraus, R., Buhre, S.. "Variation of olivine composition in the volcanic rocks in the Songliao basin, NE China: lithosphere control on the origin of the K-rich intraplate mafic lavas" in Lithos 262 (2016): 153-168. https://doi.org/https://doi.org/10.1016/j.lith
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Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)
In this paper, grandite core with Grs64±1Adr36±1Sps2composition was crystallographically studied. This core represents zone A of the macroscopically visiblefive A–E zones of the optically anisotropic Grs58–64 Adr36–42Sps2 grandite. The applied procedure includes the detailed analysis of the powder diffraction patterns, and the Rietveld refinements of the crystal structures in a series of 18 space groups and two mixtures, which were followed by the comparative analysis of the R-values, site occupancy factors, and the bond lengths and angles. Synthesis of all ...Pavle Tančić, Aleksandar Kremenović, Predrag Vulić. "Structural dissymmetrization of optically anisotropic Grs64±1Adr36±1Sps2 grandite from Meka Presedla (Kopaonik Mt., Serbia)" in Powder Diffraction, Cambridge University Press (CUP) (2019). https://doi.org/10.1017/S0885715619000897