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Ditemukan 6525 dokumen yang sesuai dengan query
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Lexcellent, Christian
"This book investigates the fascinating concept of a continuum between human memory and memory of materials. The first part provides state-of-the-art information on shape memory alloys and outlines a brief history of memory from the ancient Greeks to the present day, describing phenomenological, philosophical, and technical approaches such as neuroscience. Then, using a wealth of anecdotes, data from academic literature, and original research, this short book discusses the concepts of post-memory, memristors and forgiveness, highlights the analogies between materials defects and memory traces in the human brain. Lastly, it tackles questions of how human memory and memory of materials work together and interact. With insights from materials mechanics, neuroscience and philosophy, it enables readers to understand and continue this open debate on human memory."
Switzerland: Springer Cham, 2019
e20502516
eBooks  Universitas Indonesia Library
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Murray, Elisabeth A.
"Clinical observations and animal experiments have shaped the prevailing view of human memory. This doctrine holds that the medial temporal lobe subserves one memory system for explicit or declarative memories while the basal ganglia subserves a separate memory system for implicit or procedural memories, including habits. Cortical areas outside the medial temporal lobe are said to function in perception, motor control, attention, or other aspects of executive function, but not in memory. The Evolution of Memory Systems advances dramatically different ideas on all counts. It proposes that several memory systems arose during evolution and that they did so for the same general reason: to transcend problems and exploit opportunities encountered by specific ancestors at particular times and places in the distant past. Instead of classifying cortical areas in terms of mutually exclusive perception, executive, or memory functions, the authors show that all cortical areas contribute to memory and that they do so in their own ways-using specialized neural representations. The book also presents a proposal on the evolution of explicit memory. According to this idea, explicit (declarative) memory depends on interactions between a phylogenetically ancient navigation system and a representational system that evolved in humans to represent ones self and others. As a result, people embed representations of themselves into the events they experience and the facts they learn, which leads to the perception of participating in events and knowing facts.
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Oxford: Oxford University Press, 2016
e20470230
eBooks  Universitas Indonesia Library
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Gallistel, C.R.
Chichester: Wiley-Blackwell, 2009
612.82 GAL m
Buku Teks  Universitas Indonesia Library
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Baddeley, Alan
Hove: Lawrence Erlbaum Associates, 1990
153.12 BAD h
Buku Teks SO  Universitas Indonesia Library
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Haberlandt, Karl
Boston: Allyn and Bacon, 1999
153.12 HAB h
Buku Teks SO  Universitas Indonesia Library
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Ashcraft, Mark H.
"Buku ini berisi tentang perkenalan psikologi kognitif, sistem informasi manusia, memory, persepsi dan atensi, reasoning. Terdiri atas 13 bab."
New York: Harper Collins, 1994
153.12 ASH h
Buku Teks SO  Universitas Indonesia Library
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Katili, Sari
"Paduan "Shape memory" adalah paduan yang mempunyai sifat untuk dapat ?teringat" kembali terhadap bentuknya semula apabila dipanaskan. Sifat ingat bentuk ini dihasilkan sebagai akibat terjadinya suatu transformasi fasa induk dan fasa martensit yang reversible. Agar diperoleh sifat ingat bentuk ("shape memory"), maka paduan Cu dengan struktur a dan B harus dilarutkan kembali menjadi fasa tunggal B dengan proses perlakuan pelarutan ("So1ution treatment") hingga mencapai temperatur 750 - 900°C Proses perlakuan pelarutan ini biasanya menyebabkan proses pertumbuhan butir. Pengaruh ukuran besar butir terhadap sifat korosi pa- duan Cu-Zn-A1 diteliti dengan menggunakan ?accelerated test" dan pengukuran elektrokimia. Hasil pengamatan menunjukkan bahwa,paduan dengan fasa B maupun fasa martensit ,keduanya menunjukkan peningkatan laju desengsifikasi ("dezincification") dengan meningkatnya temperatur perlakuan pelarutan. Hasil analisa elemen dengan EDAX mendukung mekanisme desengsifikasi berdasarkan pelarutan anodik dari kuningan diikuti dengan redeposisi Cu dari larutan."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 1991
T-Pdf
UI - Tesis Membership  Universitas Indonesia Library
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Neath, Ian
Belmont: Wadsworth, 2003: Belmont, 2003
153.12 NEA h
Buku Teks SO  Universitas Indonesia Library
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Rully Setyo Wibowo
Depok: Fakultas Teknik Universitas Indonesia, 1999
S41933
UI - Skripsi Membership  Universitas Indonesia Library
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Marsanda Rimadhani
"Paduan ingat bentuk merupakan kelompok paduan yang memiliki karakteristik unik untuk mengingat dan kembali ke bentuk semula setelah diberikan tegangan dan terdeformasi dengan cara di panaskan pada temperatur tertentu. Salah satu jenisnya ialah, paduan berbasis Cu yang memiliki sifat ingat bentuk yang baik dan bisa digunakan sebagai alternatif karena biayanya yang murah dibandingkan jenis paduan lainnya. Pada penelitian ini dipelajari pengaruh metode pencelupan terhadap sifat ingat bentuk paduan Cu-24,12Al-3,13Mn (%Atomik) yang dibuat berdasarkan metode pengecoran gravitasi yang selanjutnya dihomogenisasi pada temperatur 900 °C selama 2 jam dan didinginkan pada temperatur ruang. Setelah paduan mencapai temperatur ruang, dilakukan perlakuan panas betatizing pada temperatur 900 °C selama 30 menit dan dilanjutkan dengan tiga metode pencelupan yang berbeda, yaitu Pencelupan Langsung (Direct Quench/DQ), Pencelupan Bertahap (Step Quench/SQ), dan Pencelupan Naik (Up Quench/UQ). Tahapan selanjutnya ialah melakukan karakterisasi paduan yang dilakukan mengunakan Optical Microscope (OM), Scanning Electron Microscopy and Energy Dispersive X-Ray Spectroscopy (SEM-EDS), X-ray Diffraction (XRD), Differential Scanning Calorimetry (DSC), Bending Test, dan Microvickers. Hasil penelitian ini menyatakan bahwa, paduan As-Cast dan As-Homogenizedterdiri atas fasa b [BCC] yang memiliki morfologi acicular (b acicular) atau b [B2] Acicular dan fasa g yang terbentuk seperti nodular-nodular hitam di sekitar matriks. Pencelupan DQ menghasilkan fasa b' [M18R] dan fasa g untuk pencelupan UQ dan SQ menghasilkan fasa b' [M18R] dan fasa b [B2] Acicular dengan nilai SME berturut-turut adalah 32,43% (DQ), 10,75% (UQ), dan 9,10% (SQ). Sementara, nilai kekerasan berturut-turut adalah 233,49 HVN (SQ), 222,20 HVN (UQ), dan 20,72 (DQ). Hal ini menunjukkan bahwa indikasi dari adanya sifat Shape Memory Effect dikontribusi oleh keberadaan fasa martensit b' [M18R].

Shape Memory Alloys are a group of alloys that have the unique characteristics to remember their original shape after deformation followed by heating at a certain temperature. Cu-based alloys have good shape memory effect properties and can be used as an alternative because of the low cost compared to the other types of SMA alloy. This research studied the effect of the quenching methods on the martensite phase transformation and shape memory properties of the Cu-24,12Al-3,13Mn alloy (% atomic). The alloy was by gravity casting and was homogenized at 900 °C for 2 hours and cooled to room temperature. The betatizing treatment was carried out at a temperature 900 °C for 30 minutes and subsequently quenched with three methods, Direct Quench (DQ), Step Quench (SQ), and Up Quench (UQ). Characterization was conducted by Optical Microscope (OM), Scanning Electron Microscopy and Energy Dispersive X-Ray Spectroscopy(SEM-EDS), X-ray Diffraction (XRD), Differential Scanning Calorimetry (DSC), Bending Test, and Microvickers. The results showed that, the as-cast and as-homogenized alloy consisted of b [BCC] phase with acicular morphology (bacicular) or b [B2] Acicular and g phase, which formed as small black-nodular. The DQ microstructures showed b'[M18R] phase and g phase, with the UQ and SQ microstructures consisted of b' [M18R] phase dan b [B2] Acicular, The Shape Memory Effect values of DQ, UQ, and SQ samples were 32,43%, 10,75%, and 9,10% while the hardness were 207,72 HVN, 222,20 HVN, 233,49 HVN. This indicates that the shape memory properties contributed by the formed of phase martensite b' [M18R] in this alloy. "
Depok: Fakultas Teknik Universitas Indonesia, 2022
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
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