All Outputs

Showing 13101 to 13200 of 37472

Conference Paper (published)

Wu X, Consoli P, Minku L, Ochoa G & Yao X (2016) An Evolutionary Hyper-heuristic for the Software Project Scheduling Problem. In: Handl J, Hart E, Lewis P, Lopez-Ibanez M, Ochoa G & Paechter B (eds.) Parallel Problem Solving from Nature - PPSN XIV. Lecture Notes in Computer Science, 9921. International Conference on Parallel Problem Solving from Nature 2016: PPSN XIV, Edinburgh, 17.09.2016-21.09.2017. Cham, Switzerland: Springer Verlag, pp. 37-47. https://doi.org/10.1007/978-3-319-45823-6_4


Conference Paper (published)

Herrmann S, Ochoa G & Rothlauf F (2016) Coarse-Grained Barrier Trees of Fitness Landscapes. In: Handl J, Hart E, Lewis P, LopezIbanez M, Ochoa G & Paechter B (eds.) Parallel Problem Solving from Nature – PPSN XIV. PPSN 2016. Lecture Notes in Computer Science, 9921. PPSN2016: 14th International Conference on Parallel Problem Solving from Nature, Edinburgh, 17.09.2016-21.09.2016. Cham: Springer, pp. 901-910. https://doi.org/10.1007/978-3-319-45823-6_84


Conference Paper (published)

Galloway S (2016) Adult literacies in Scotland: is social practice being buried alive?. In: James N (ed.) Adult Education in Austere Times: SCUTREA Conference Proceedings 2016. SCUTREA, 45th Annual Conference, July 2016, Leicester, UK. Leicester: Vaughan Centre for Lifelong Learning, University of Leicester, pp. 95-101. http://cradall.org/sites/default/files/Final%20SCUTREA%20Proceedings%20July%202016_0.pdf


Research Report

Hadland A, Lambert P & Barnett C (2016) The State of News Photography 2016. World Press Photo. http://www.worldpressphoto.org/activities/research/state-news-photography-2016


Commentary

Vollaard N & Metcalfe R (2016) Do not write off supramaximal exercise just yet. Commentary on: Crosstalk 26: High intensity interval training does/does not have a role in risk reduction or treatment of disease, Journal of Physiology (2015), 593 (24), pp. 5215-5225.. Journal of Physiology, pp. 2-3. http://api.onlinelibrary.wiley.com/asset/v1/doi/10.1113%2FJP271041/asset/supinfo%2Ftjp6894-sup-0001-Comments.pdf?l=HcpXeTMYfB1JrsbXTzl7oj3zaUc6EAV1mx77shTCc7czFpfRZV5tmL1cJEfokFrAS1ZrS7qXr5VW%0AAuYVriFArg%3D%3D


Conference Paper (published)

Ali L, Hussain A, Li J, Howard N, Shah AA, Sudhakar U, Shah MA & Hussain ZU (2016) A novel fully automated liver and HCC tumor segmentation system using morphological operations. In: Liu C, Hussain A, Luo B, Tan K, Zeng Y & Zhang Z (eds.) Advances in Brain Inspired Cognitive Systems. BICS 2016. Lecture Notes in Computer Science, 10023. BICS 2016: 8th International Conference on Brain-Inspired Cognitive Systems, Beijing, China, 28.11.2016-30.11.2016. Cham, Switzerland: Springer, pp. 240-250. https://doi.org/10.1007/978-3-319-49685-6_22


Conference Paper (published)

Alharbi H, Aloufi K & Hussain A (2016) A new biologically-inspired analytical worm propagation model for mobile unstructured peer-to-peer networks. In: Liu C, Hussain A, Luo B, Tan K, Zeng Y & Zhang Z (eds.) Advances in Brain Inspired Cognitive Systems: 8th International Conference, BICS 2016, Beijing, China, November 28-30, 2016, Proceedings. Lecture Notes in Computer Science, 10023. BICS 2016: Advances in Brain Inspired Cognitive Systems 8th International Conference, Beijing, China, 28.11.2016-30.11.2016. Cham, Switzerland: Springer, pp. 251-263. https://doi.org/10.1007/978-3-319-49685-6_23


Conference Paper (published)

Hall AJ, Hussain A & Shaikh MG (2016) Predicting insulin resistance in children using a machine-learning-based clinical decision support system. In: Liu C, Hussain A, Luo B, Tan K, Zeng Y & Zhang Z (eds.) Advances in Brain Inspired Cognitive Systems. BICS 2016. Lecture Notes in Computer Science, 10023. BICS 2016: 8th International Conference on Brain-Inspired Cognitive Systems, Beijing, China, 28.11.2016-30.11.2016. Cham, Switzerland: Springer, pp. 274-283. https://doi.org/10.1007/978-3-319-49685-6_25


Article

Pambo AFK, Carroll T, Lelanchon L, Ehi-Ebewele E, Sonko A & White L (2016) International trade in endangered species: the challenges and successes of the 17th conference of parties to the convention on international trade in endangered species of wild fauna and flora (CITES). African Journal of Ecology, 54 (4), pp. 399-401. https://doi.org/10.1111/aje.12394


Conference Paper (published)

Razzaq S, Maqbool F & Hussain A (2016) Modified cat swarm optimization for clustering. In: Liu C, Hussain A, Luo B, Tan K, Zeng Y & Zhang Z (eds.) Advances in Brain Inspired Cognitive Systems. BICS 2016. Lecture Notes in Computer Science, 10023. BICS 2016: 8th International Conference on Brain-Inspired Cognitive Systems, Beijing, China, 28.11.2016-30.11.2016. Cham, Switzerland: Springer, pp. 161-170. https://doi.org/10.1007/978-3-319-49685-6_15


Conference Paper (published)

Shiva AS & Hussain A (2016) Continuous time recurrent neural network model of recurrent collaterals in the hippocampus CA3 region. In: Liu C, Hussain A, Luo B, Tan K, Zeng Y & Zhang Z (eds.) Advances in Brain Inspired Cognitive Systems. BICS 2016. Lecture Notes in Computer Science, 10023. BICS2016: 8th International Conference on Brain-Inspired Cognitive System, Beijing, China, 28.11.2016-30.11.2016. Cham, Switzerland: Springer, pp. 343-354. https://doi.org/10.1007/978-3-319-49685-6_31


Book Chapter

Hoffmann C (2016) Die geopolitischen Ursprünge der Baghdad Bahn: Inter-Imperialistische Rivalitäten im Osmanischen Reich des frühen 20. Jahrhunderts [The geopolitical origins of the Baghdad Railway: Inter-Imperial Rivalry in the early 20th century Ottoman Empire]. In: Hertsch M & Er M (eds.) Die Bagdadbahn: Ein Umriss deutsch-türkischer Beziehungen Gesammelte Beiträge. Studien zur Geschichts­forschung der Neuzeit, 91. Hamburg: Kovač Verlag, pp. 61-72. http://www.verlagdrkovac.de/978-3-8300-8787-8.htm?lang=english


Conference Paper (published)

Wang D, Zhou Q & Hussain A (2016) Deep and sparse learning in speech and language processing: An overview. In: Liu C, Hussain A, Luo B, Tan K, Zeng Y & Zhang Z (eds.) Advances in Brain Inspired Cognitive Systems. BICS 2016. Lecture Notes in Computer Science, 10023. BICS 2016: 8th International Conference on Brain-Inspired Cognitive Systems, Beijing, China, 28.11.2016-30.11.2016. Cham, Switzerland: Springer, pp. 171-183. https://doi.org/10.1007/978-3-319-49685-6_16


Conference Paper (published)

Wajid S, Hussain A, Luo B & Huang K (2016) An investigation of machine learning and neural computation paradigms in the design of clinical decision support systems (CDSSs). In: Liu C, Hussain A, Luo B, Tan K, Zeng Y & Zhang Z (eds.) Advances in Brain Inspired Cognitive Systems. BICS 2016. Lecture Notes in Computer Science, 10023. BICS2016: 8th International Conference on Brain-Inspired Cognitive Systems, Beijing, China, 28.11.2016-30.11.2016. Cham, Switzerland: Springer, pp. 58-67. https://doi.org/10.1007/978-3-319-49685-6_6


Authored Book

MacNeil K (2016) The Brilliant & Forever [The Brilliant and Forever]. Edinburgh: Polygon Books. https://www.amazon.co.uk/Brilliant-Forever-Kevin-MacNeil/dp/1846973376/ref=sr_1_1?s=books&ie=UTF8&qid=1500472802&sr=1-1


Article

Barca B, Vincent C, Soeung K, Nuttall M & Hobson K (2016) Multi-female group in the southernmost species of Nomascus: field observations in Eastern Cambodia reveal multiple breeding females in a single group of Southern Yellow-Cheeked Crested Gibbon Nomascus gabriellae. Asian Primates Journal, 6 (1), pp. 15-19. http://bit.ly/2y89xyk


Article

Wiegertjes GF, Lorenzen N, Secombes CJ, Collet B, Fischer U, Tafalla C, Parra D, Scapigliati G, Boudinot P, Evensen O, Adams A, Toffan A, Buchmann K, Vesely T & David L (2016) TargetFish - Targeted disease prophylaxis in European fish farming. Bulletin of the European Association of Fish Pathologists, 36 (1), pp. 52-56. http://eafp.org/bulletin-archive/


Conference Paper (published)

McQuistin S, Perkins C & Fayed M (2016) Implementing Real-Time Transport Services over an Ossified Network. In: ANRW '16 Proceedings of the 2016 Applied Networking Research Workshop. ANRW '16 - Applied Networking Research Workshop 2016, Berlin, Germany, 16.07.2016-16.07.2016. New York: ACM, pp. 81-87. https://doi.org/10.1145/2959424.2959443


Article

Shipton C, Crowther A, Kourampas N, Prendergast ME, Horton M, Douka K, Schwenninger J, Faulkner P, Quintana-Morales EM, Langley MC, Tibesasa R, Picornell-Gelabert L, Wilmsen EN, Doherty C & Veall M (2016) Reinvestigation of Kuumbi Cave, Zanzibar, reveals Later Stone Age coastal habitation, early Holocene abandonment and Iron Age reoccupation. Azania: Archaeological Research in Africa, 51 (2), pp. 197-233. https://doi.org/10.1080/0067270X.2016.1173308


Conference Paper (published)

Bartie P, Mackaness W, Gkatzia D & Rieser V (2016) The REAL corpus: A crowd-sourced Corpus of human generated and evaluated spatial references to real-world urban scenes. In: Calzolari N, Choukri K, Mazo H, Moreno A, Declerck T T, Goggi S, Grobelnik M, Odijk J, Piperidis S, Maegaard B & Mariani J (eds.) Proceedings of the 10th International Conference on Language Resources and Evaluation, LREC 2016. 10th International Conference on Language Resources and Evaluation, LREC 2016, Portoroz, Slovenia, 23.05.2016-28.05.2016. Paris: European Language Resources Association (ELRA), pp. 2153-2155. http://www.lrec-conf.org/proceedings/lrec2016/pdf/1035_Paper.pdf


Book Chapter

Munday I (2016) Creativity, Education and the Future. In: Smeyers P & Depaepe M M (eds.) Educational Research: Discourses of Change and Changes of Discourse. Educational Research, 9. Cham, Switzerland: Springer International, pp. 57-69. http://link.springer.com/chapter/10.1007/978-3-319-30456-4_6


Book Chapter

Toth G (2016) Performing 'the Spirit of '76': US Historical Memory and Countercommemorations for American Indian Sovereignty. In: Gilroy A & Messmer M (eds.) America: Justice, Conflict, War. European Views of the United States, 8. Heidelberg, Germany: Winter University Press, pp. 131-150. https://www.winter-verlag.de/en/detail/978-3-8253-6535-6/Gilroy_ea_Eds_America_Justice_Conflict_War/


Book Chapter

Forbes J & Weiner G (2016) 'Independent' in Scotland: elite by education?. In: Maxwell C & Aggleton P (eds.) Elite Education: International Perspectives. Abingdon: Routledge, pp. 29-41. https://www.routledge.com/Elite-Education-International-perspectives/Maxwell-Aggleton/p/book/9781138799615


Book Chapter

Wang G, Tanaka M, Eynon N, North K, Williams A, Collins MR, Moran CN, Britton SL, Fuku N, Ashley E, Klissouras V, Lucia A, Ahmetov I, de Geus E, Alsayrafi M & Pitsiladis Y (2016) The Future of Genomic Research in Athletic Performance and Adaptation to Training. In: Posthumus M & Collins M (eds.) Genetics and Sports. 2nd ed. Medicine and Sports Science, 61. Basel: Karger, pp. 55-67. http://www.karger.com/Article/Abstract/445241


Book Chapter

Troscianko T, Davidoff J, Humphreys G, Landis T, Fahle M, Greenlee M, Brugger P & Phillips W (2016) Human colour discrimination based on a non-parvocellular pathway. In: Humphreys G & Riddoch J (eds.) A Reader in Visual Agnosia. Abingdon: Routledge, pp. 277-293. https://www.routledge.com/A-Reader-in-Visual-Agnosia/Humphreys-Riddoch/p/book/9781138951006; https://doi.org/10.4324/9781315668444


Book Chapter

Rolinson D (2016) British Docudrama: New Directions in Reflexivity. In: Ebbrecht-Hartmann T & Paget D (eds.) Docudrama on European Television: A Selective Survey. Palgrave European Film and Media Studies. Basingstoke: Palgrave Macmillan, pp. 199-227. http://www.palgrave.com/de/book/9781137499783


Book Review

Izod J (2016) Katherine Spring, Saying it with Songs: Popular Music and the Coming of Sound to Hollywood Cinema and Michael Slowik, After the Silents: Hollywood Film Music in the Early Sound Era, 1926-1934. Review of: Saying it with Songs: popular music and the coming of sound to Hollywood cinema by Katherine Spring (Oxford: Oxford University Press, 2013, 229 pages). ISBN 978-0199842223; and After the Silents: Hollywood film music in the early sound era, 1926-1934 by Michael Slowik (New York, NY: Columbia UP, 2014, 384 pages). ISBN 9780231165822. Screen, 57 (3), pp. 379-383. https://doi.org/10.1093/screen/hjw035


Book Chapter

Mould G, Bowers J, Dewar C & McGugan E (2016) Assessing the Impact of Systems Modelling in the Redesign of an Emergency Department. In: Mustafee N (ed.) Operational Research for Emergency Planning in Healthcare: Volume 2. OR Essentials. Basingstoke: Palgrave MacMillan, pp. 31-47. http://www.palgrave.com/de/book/9781137573261


Conference Paper (published)

McQuistin S, Perkins C & Fayed M (2016) TCP Goes to Hollywood. In: NOSSDAV '16 Proceedings of the 26th International Workshop on Network and Operating Systems Support for Digital Audio and Video. 26th ACM Workshop on Network and Operating Systems Support for Digital Audio and Video, NOSSDAV 2016, Klagenfurt, Austria, 10.05.2016-13.05.2016. New York: ACM, pp. 25-30. https://doi.org/10.1145/2910642.2910648


Book Chapter

Burt S & Sparks L (2016) Retail Branding. In: Dall'Olmo Riley F, Singh J & Blankson C (eds.) Routledge Companion to Contemporary Brand Management. Routledge Companions in Business, Management and Marketing. London: Routledge, pp. 492-508. https://www.routledge.com/The-Routledge-Companion-to-Contemporary-Brand-Management/Riley-Singh-Blankson/p/book/9780415747905


Conference Paper (published)

Enright J & Faben JD (2016) Building a Better Mouse Maze. In: Demaine ED E & Grandoni F (eds.) 8th International Conference on Fun with Algorithms, FUN 2016, June 8–10, 2016, La Maddalena, Italy. LIPIcs: Leibniz International Proceedings in Informatics. 8th International Conference on Fun with Algorithms, La Maddalena, Italy, 08.06.2016-10.06.2016. Saarbrucken/Wadern, Germany: Dagstuhl Publishing, pp. 15:1-15:12. http://www2.idsia.ch/cms/fun16/; https://doi.org/10.4230/LIPIcs.FUN.2016.15


Book Chapter

Wilkinson JE & Rycroft-Malone J (2016) Organising to Connect Academic Knowledge and Practice in Healthcare. In: Orr K, Nutley S, Russell S, Bain R, Hacking B & Moran C (eds.) Knowledge and Practice on Business and Organisations. Routledge Advances in Organizational Learning and Knowledge Management, 2. Oxford: Routledge, pp. 146-160. https://www.routledge.com/Knowledge-and-Practice-in-Business-and-Organisations/Orr-Nutley-Russell-Bain-Hacking-Moran/p/book/9781138940857


Book Chapter

Ebert P & Rossberg M (2016) Introduction to Abstractionism. In: Ebert P & Rossberg M (eds.) Abstractionism. Essays in Philosophy of Mathematics. Oxford: Oxford University Press, pp. 3-35. https://global.oup.com/academic/product/abstractionism-9780199645268?q=Abstractionism〈=en&cc=gb#


Edited Book

Ebert P & Rossberg M (eds.) (2016) Abstractionism: Essays in Philosophy of Mathematics. Oxford: Oxford University Press. https://global.oup.com/academic/product/abstractionism-9780199645268?q=Abstractionism〈=en&cc=gb


Book Chapter

Jones T (2016) Against the Social Pattern: New Zealand Fiction 1950-1970. In: Williams M (ed.) A History of New Zealand Literature. New York: Cambridge University Press, pp. 153-166. http://www.cambridge.org/us/academic/subjects/literature/english-literature-general-interest/history-new-zealand-literature?format=HB


Book Chapter

Ferguson C (2016) Mixed Media: Olivia Plender’s A Stellar Key to the Summerland and the Afterlife of Spiritualist Visual Culture. In: Jones A & Mitchell R (eds.) Drawing on the Victorians: The Palimpsest of Victorian and Neo-Victorian Graphic Texts. Series in Victorian Studies. Athens, OH, USA: Ohio University Press, pp. 121-150. http://www.ohioswallow.com/book/Drawing+on+the+Victorians


Book Chapter

Herridge EJ, Murray RL, Gwynne DT & Bussiere L (2016) Diversity in mating and parental sex roles. In: Kliman R (ed.) Encyclopedia of Evolutionary Biology. Oxford: Elsevier, pp. 453-458. http://dx.doi.org/10.1016/B978-0-12-800049-6.00154-2


Book Chapter

Fuertes V & McQuaid R (2016) Personalized activation policies for the long-term unemployed: the role of local governance in the UK. In: Heidenreich M & Rice D (eds.) Integrating Social and Employment Policies in Europe: Active Inclusion and Challenges for Local Welfare Governance. Cheltenham: Edward Elgar, pp. 93-117. http://www.e-elgar.com/shop/integrating-social-and-employment-policies-in-europe


Book Chapter

Bourlakis M, Maglaras G, Aktas E, Gallear D & Fotopoulos C (2016) Does Firm Size Influence Sustainable Performance in Food Supply Chains: Insights from Greek SMEs. In: Pawar K, Rogers H, Potter A & Naim M (eds.) Developments in Logistics and Supply Chain Management: Past, Present and Future. London: Palgrave Macmillan, pp. 253-265. http://dx.doi.org/10.1057/9781137541253


Conference Paper (published)

Neumann G & Cairns D (2016) A Targeted Estimation of Distribution Algorithm Compared to Traditional Methods in Feature Selection. In: Madani K, Dourado A, Rosa A, Filipe J & Kacprzyk J (eds.) Computational Intelligence: Revised and Selected Papers of the International Joint Conference, IJCCI 2013, Vilamoura, Portugal, September 20-22, 2013. Studies in Computational Intelligence, 613. 5th International Joint Conference on Computational Intellegience, IJCCI 2013, Vilamoura, Portugal, 20.09.2013-22.09.2013. Cham, Switzerland: Springer, pp. 83-103. http://link.springer.com/chapter/10.1007/978-3-319-23392-5_5; https://doi.org/10.1007/978-3-319-23392-5_5


Book Chapter

Oram R (2016) Trackless, Impenetrable and Underdeveloped? Roads, Colonization and Environmental Transformation in the Anglo-Scottish Border Zone, c.1100 to c.1300. In: Allen V & Evans R (eds.) Roadworks: Medieval Britain, medieval roads. Manchester Medieval Literature and Culture. Manchester: Manchester University Press, pp. 303-325. https://doi.org/10.7228/manchester/9780719085062.003.0013


Book Chapter

Oram R (2016) Monasteries and Monastic Schools in Northern England and Eastern Scotland c.950-c.1250. In: Barnwell P (ed.) Places of Worship in Britain and Ireland, 950-1150. Rewley House Studies in the Historic Environment, 5. Donington: Shaun Tyas Publishing, pp. 125-153. https://www.conted.ox.ac.uk/about/rewley-house-studies-in-the-historic-environment#placesofworship


Book Chapter

Innes J & Tipping R (2016) Geoarchaeology and Landscape Reconstruction. In: Waddington C & Bonsall C (eds.) Archaeology and Environment on the North Sea Littoral. A Case Study from Low Hauxley. Bakewell and Newcastle-upon-Tyne: Archaeological Research Services Ltd and Northumberland Wildlife Trust Ltd, pp. 214-252. https://www.oxbowbooks.com/oxbow/archaeology-and-environment-on-the-north-sea-littoral.html


Book Chapter

Tipping R (2016) Catastrophism, Climate Change, Colin Burgess and The Cheviot. In: Crellin R, Fowler C & Tipping R (eds.) Prehistory without Borders: The Prehistoric Archaeology of the Tyne-Forth Region. Oxford: Oxbow Books. http://www.oxbowbooks.com/oxbow/prehistory-without-borders.html


Book Review

Macleod E (2016) Americomania and the French revolution debate in Britain, 1789-1802. Review of: Americomania and the French Revolution debate in Britain, 1789-1802, by Wil Verhoeven, Cambridge, Cambridge University Press, 2013, 387pp., ISBN 978-1-107-04019-9 (hardback). Global Discourse, 6 (1-2), pp. 165-168. https://doi.org/10.1080/23269995.2015.1053249


Book Chapter

Lovatt P (2016) Sound, Music and Memory in Jia Zhangke’s 'Hometown Trilogy'. In: Greene L & Kulezic-Wilson D (eds.) Palgrave Handbook of Sound Design and Music in Screen Media: Integrated Soundtracks. London: Palgrave Macmillan, pp. 229-244. http://www.palgrave.com/gb/book/9781137516794#aboutBook


Book Chapter

Ebert P (2016) A framework for implicit definitions and the a priori. In: Ebert P & Rossberg M (eds.) Abstractionism: Essays in the Philosophy of Mathematics. Oxford: Oxford University Press, pp. 133-160. https://global.oup.com/academic/product/abstractionism-9780199645268?q=abstractionism〈=en&cc=gb


Commentary

Larkum ME & Phillips W (2016) Does arousal enhance apical amplification and disamplification?. Commentary on: Mather, M., Clewett, D., Sakaki, M., & Harley, C. (2016). Norepinephrine ignites local hotspots of neuronal excitation: How arousal amplifies selectivity in perception and memory. Behavioral and Brain Sciences, 39. doi:10.1017/S0140525X15000667. Behavioral and Brain Sciences, 39, pp. 32-34, Art. No.: e215. https://doi.org/10.1017/s0140525x15001867


Book Review

Vine A (2016) Review of The Shakespearean Archive: Experiments in New Media from the Renaissance to Postmodernity. Review of: Alan Galey, The Shakespearean Archive: Experiments in New Media from the Renaissance to Postmodernity (Cambridge: Cambridge University Press, 2014), xv, 346 pp., 978-1-107-04064-9. Shakespeare Jahrbuch, 152, pp. 19-21. http://shakespeare-gesellschaft.de/en/jahrbuch/volume-152-2016/contents.html


Book Chapter

Marshall B (2016) Linguistic Zones of the French Atlantic. In: Simon S (ed.) Speaking Memory: How Translation Shapes City Life. Culture of Cities Series, 5. Montreal: McGill-Queen's University Press, pp. 191-204. http://www.mqup.ca/speaking-memory-products-9780773547889.php


Book Chapter

Rigby P & Ishola P (2016) Child Protection for Child Trafficking Victims. In: Malloch M & Rigby P (eds.) Human Trafficking: The Complexities of Exploitation. Edinburgh: Edinburgh University Press, pp. 84-102. https://edinburghuniversitypress.com/book-human-trafficking.html


Article

Faye O, Fall G, Soropogui B, Koivogui L, Magassouba N, Weidmann M, Sall AA & Faye O (2016) Deployment of the Institut Pasteur de Dakar team to Guinea in the Ebola virus Disease outbreak in West-Africa 2014-2016. Clinical Microbiology and Infectious Diseases (CMID), 1 (4), pp. 1-4. https://www.oatext.com/deployment-of-the-institut-pasteur-de-dakar-team-to-guinea-in-the-ebola-virus-disease-outbreak-in-westafrica-20142016.php