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Academic literature on the topic 'Shuffling back'
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Journal articles on the topic "Shuffling back"
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Levitas, Ruth. "Shuffling Back to Equality?" Soundings 26, no. 26 (2004): 59–72. http://dx.doi.org/10.3898/136266204820467445.
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Alrawashdeh, Hisham. "Data Shuffling and Data Blocks Shuffling Method for Digital Data Signals Protection." Jordan Journal of Electrical Engineering 11, no. 1 (2025): 1. http://dx.doi.org/10.5455/jjee.204-1722936064.
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In this paper, a new method for digital data cryptography is proposed to increase the speed of data cryptography, simplify the processes of data encryption - decryption, and to strengthen the degree of data protection. The proposed data shuffling and data blocks shuffling (DS_DBS) method is able to process messages, gray images, color images and digital speech file using the same encryption and decryption functions; changing the digital data type will not require any changes in the aforesaid functions. The proposed DS_DBS method allows data blocking (block size will be variable), and it is determined by the private key. Data encryption is applied by simple data shuffling and data blocks shuffling, while data decryption is applied by shuffling back the data blocks and shuffling back the data. These shuffling operations replace the complex logical and arithmetic operations used in other existing methods of data cryptography. The shuffling and shuffling back operations are implemented based on two secret indices keys, obtained by running two chaotic logistic map models. The proposed method utilizes a long private key with a variable length that depends on the selected number of crypto phases. It can be implemented in one or more phases; each phase is a function call to execute the encryption-decryption functions with the associated inputs. Using more than a phase, increases the security level by using longer private key, and each phase will be independent. The encrypted-decrypted result of each phase can be taken as a final result. Implementing the proposed DS_DBS method - using various data types – and examining its speed reveal not only the enhanced speed of data cryptography, but also the better quality and sensitivity of the proposed method compared to those of existing state of the art cryptography methods.
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Hiatt, Kyly M., John Cauchi, and Christopher Payne. "Atypical presentation of arachnoid web causing paraparesis with absence of sensory symptoms." BMJ Case Reports 17, no. 10 (2024): e260850. http://dx.doi.org/10.1136/bcr-2024-260850.
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We present a man in his 60s with a dorsal thoracic arachnoid web spanning levels T6-T8. The patient presented with gait abnormalities, severe neuropathic lower back pain and mild urinary incontinence without sensory deficits. He underwent laminectomy with arachnoid web fenestration. At the 6-week postoperative follow-up appointment, he had increased muscle strength in his lower extremities and was able to walk without shuffling his feet, with a straight back and standing upright. This is a marked improvement from his previous hunched and shuffling gait. He has had partial resolution of his neuropathic low back pain. Arachnoid webs are often confused with other neurological disorders, most commonly idiopathic ventral cord herniation, which prolongs the time to surgical intervention. Eventual fenestration of our patient’s web led to significant improvement in gait and partial relief of his neuropathic low back pain.
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Al Qadi, Ziad. "Three Rounds Cryptography to Protect Secret Message." International Journal of Computer Science and Mobile Computing 13, no. 6 (2024): 37–49. http://dx.doi.org/10.47760/ijcsmc.2024.v13i06.006.
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A simple three rounds method of message cryptography will be introduced, the message will be encrypted-decrypted by apply XORing operation of the message with the secret KEY1 in the first round, in the second round the message will be shuffled using the secret key KEY2, while in the third round the message binary matrix will be rotated left to a number of selected digits. The introduced method will be very secure it will use a secret kept digital color image as an image_key, this image will be used to generate KEY1 and KEY2. KEY1 will be extracted from the image from a selected position, while KEY2 will be an indices key obtained by sorting a number of bytes extracted from the image from another position determined by the user. In addition to the image_key the method will use the values of POS1, POS2, and NORLD to determine the starting position of key1, the starting position of key2 and the number of rotate left digits. The produced decrypted message will be very sensitive to the selected image_key, POS1, POS2 and NORTD. The encryption function will be simplified and it will be implemented using three simple tasks: XORing, shuffling and rotating left, while the decryption function will be implemented by applying rotate left, shuffling back and XORing operations. The proposed method will be implemented and tested using various messages, the results will be studied and analyzed to prove the achievements provided by the method in: quality, speed, security and sensitivity.
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Suzuki, Yumewo, Kuniko Asada, Junichi Miyazaki, Takeo Tomita, Tomohisa Kuzuyama, and Makoto Nishiyama. "Enhancement of the latent 3-isopropylmalate dehydrogenase activity of promiscuous homoisocitrate dehydrogenase by directed evolution." Biochemical Journal 431, no. 3 (2010): 401–12. http://dx.doi.org/10.1042/bj20101246.
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HICDH (homoisocitrate dehydrogenase), which is involved in lysine biosynthesis through α-aminoadipate, is a paralogue of IPMDH [3-IPM (3-isopropylmalate) dehydrogenase], which is involved in leucine biosynthesis. TtHICDH (Thermus thermophilus HICDH) can recognize isocitrate, as well as homoisocitrate, as the substrate, and also shows IPMDH activity, although at a considerably decreased rate. In the present study, the promiscuous TtHICDH was evolved into an enzyme showing distinct IPMDH activity by directed evolution using a DNA-shuffling technique. Through five repeats of DNA shuffling/screening, variants that allowed Escherichia coli C600 (leuB−) to grow on a minimal medium in 2 days were obtained. One of the variants LR5–1, with eight amino acid replacements, was found to possess a 65-fold increased kcat/Km value for 3-IPM, compared with TtHICDH. Introduction of a single back-replacement H15Y change caused a further increase in the kcat/Km value and a partial recovery of the decreased thermotolerance of LR5–1. Site-directed mutagenesis revealed that most of the amino acid replacements found in LR5–1 effectively increased IPMDH activity; replacements around the substrate-binding site contributed to the improved recognition for 3-IPM, and other replacements at sites away from the substrate-binding site enhanced the turnover number for the IPMDH reaction. The crystal structure of LR5–1 was determined at 2.4 Å resolution and revealed that helix α4 was displaced in a manner suitable for recognition of the hydrophobic γ-moiety of 3-IPM. On the basis of the crystal structure, possible reasons for enhancement of the turnover number are discussed.
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van Schooten, Kimberley S., Sietse M. Rispens, Petra J. M. Elders, Paul Lips, Jaap H. van Dieën, and Mirjam Pijnappels. "Assessing Physical Activity in Older Adults: Required Days of Trunk Accelerometer Measurements for Reliable Estimation." Journal of Aging and Physical Activity 23, no. 1 (2015): 9–17. http://dx.doi.org/10.1123/japa.2013-0103.
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We investigated the reliability of physical activity monitoring based on trunk accelerometry in older adults and assessed the number of measured days required to reliably assess physical activity. Seventy-nine older adults (mean age 79.1 ± 7.9) wore an accelerometer at the lower back during two nonconsecutive weeks. The duration of locomotion, lying, sitting, standing and shuffling, movement intensity, the number of locomotion bouts and transitions to standing, and the median and maximum duration of locomotion were determined per day. Using data of week 2 as reference, intraclass correlations and smallest detectable differences were calculated over an increasing number of consecutive days from week 1. Reliability was good to excellent when whole weeks were assessed. Our results indicate that a minimum of two days of observation are required to obtain an ICC ≥ 0.7 for most activities, except for lying and median duration of locomotion bouts, which required up to five days.
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MURPHY, J. BRENDAN, J. DUNCAN KEPPIE, DON DAVIS, and TOM E. KROGH. "Regional significance of new U–Pb age data for Neoproterozoic igneous units in Avalonian rocks of northern mainland Nova Scotia, Canada." Geological Magazine 134, no. 1 (1997): 113–20. http://dx.doi.org/10.1017/s0016756897006596.
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Gondwanan Neoproterozoic tectonothermal events (Pan-African and Brasiliano) are represented in northern mainland of Nova Scotia by volcanic and sedimentary rocks assigned to the Jeffers and Georgeville groups and by gabbroic to granitoid plutons. These rocks comprise part of Avalonia, an exotic terrane in the Appalachian orogen that was deposited in an arc-related environment along the periphery of Gondwana prior to accretion to Laurentia. Lavas sampled in the basal units of the Jeffers and Georgeville groups yielded slightly discordant U–Pb zircon and monazite data that fall on chords with upper intercept ages of 628 Ma and 617.7±1.6 Ma, respectively. Syntectonic to late syntectonic plutons intruded into these groups yielded U–Pb zircon ages of 606.6±1.6 Ma and 603+9−5 Ma. The former intrusion also yielded a concordant titanite age of 607±3 Ma. When combined with previously published ages, these data indicate that the back-arc deposition recorded in these groups lasted 10–15 million years (628–613 Ma) and was closely followed by c. 613–595 Ma metamorphism, intrusion and heterogeneous strike-slip related deformation. Assuming no significant shuffling of fault blocks, the relative locations of the Cobequid–Antigonish back-arc basin and the southern Cape Breton Island volcanic arc are consistent with their genesis above a north-west-dipping subduction zone. The age range of arc-related magmatism in Nova Scotia is similar to that of Avalonian rocks in southeastern Newfoundland and Britain, lending support to hypotheses of Neoproterozoic linkages.
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Dietschi, Quentin, Joël Tuberosa, Lone Rösingh, et al. "Evolution of immune chemoreceptors into sensors of the outside world." Proceedings of the National Academy of Sciences 114, no. 28 (2017): 7397–402. http://dx.doi.org/10.1073/pnas.1704009114.
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Changes in gene expression patterns represent an essential source of evolutionary innovation. A striking case of neofunctionalization is the acquisition of neuronal specificity by immune formyl peptide receptors (Fprs). In mammals, Fprs are expressed by immune cells, where they detect pathogenic and inflammatory chemical cues. In rodents, these receptors are also expressed by sensory neurons of the vomeronasal organ, an olfactory structure mediating innate avoidance behaviors. Here we show that two gene shuffling events led to two independent acquisitions of neuronal specificity by Fprs. The first event targeted the promoter of a V1R receptor gene. This was followed some 30 million years later by a second genomic accident targeting the promoter of a V2R gene. Finally, we show that expression of a vomeronasal Fpr can reverse back to the immune system under inflammatory conditions via the production of an intergenic transcript linking neuronal and immune Fpr genes. Thus, three hijackings of regulatory elements are sufficient to explain all aspects of the complex expression patterns acquired by a receptor family that switched from sensing pathogens inside the organism to sensing the outside world through the nose.
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Duong, Huu-Thanh, Tram-Anh Nguyen-Thi, and Vinh Truong Hoang. "Vietnamese Sentiment Analysis under Limited Training Data Based on Deep Neural Networks." Complexity 2022 (June 30, 2022): 1–14. http://dx.doi.org/10.1155/2022/3188449.
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The annotated dataset is an essential requirement to develop an artificial intelligence (AI) system effectively and expect the generalization of the predictive models and to avoid overfitting. Lack of the training data is a big barrier so that AI systems can broaden in several domains which have no or missing training data. Building these datasets is a tedious and expensive task and depends on the domains and languages. This is especially a big challenge for low-resource languages. In this paper, we experiment and evaluate many various approaches on sentiment analysis problems so that they can still obtain high performances under limited training data. This paper uses the preprocessing techniques to clean and normalize the data and generate the new samples from the limited training dataset based on many text augmentation techniques such as lexicon substitution, sentence shuffling, back translation, syntax-tree transformation, and embedding mixup. Several experiments have been performed for both well-known machine learning-based classifiers and deep learning models. We compare, analyze, and evaluate the results to indicate the advantage and disadvantage points of the techniques for each approach. The experimental results show that the data augmentation techniques enhance the accuracy of the predictive models; this promises that smart systems can be applied widely in several domains under limited training data.
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Supatmi, Sri. ""OK KETUK": Improving Students' Understanding of Periodic System of Elements Material Through Learning Media." LAVOISIER: Chemistry Education Journal 3, no. 1 (2024): 88–90. http://dx.doi.org/10.24952/lavoisier.v3i1.11131.
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This study aims to improve students' understanding of the material on the periodic system of elements through OK KETUK learning media. OK KETUK is a learning medium for the periodic system of elements that combines element cards and the periodic table. This medium is played by shuffling the cards, determining the electron configuration, period, and group of elements on the front of the card, doing problems on the back of the card, and placing the elements on the periodic table. This research is classroom action research conducted in two cycles. Each cycle consists of planning, implementing, observing, and reflecting. The research subjects were students of class X IPA 1 SMA Santo Yakobus Jakarta for the academic year 2019/2020, with 24 students, consisting of 12 male and 12 female students. The instruments used in this study consisted of learning outcomes tests, teacher and student activity observation sheets, interviews, and field notes. The results showed that OK KETUK learning media could improve students' understanding of the material on the periodic system of elements. The average score increased from 64.79 with 37.50% learning completeness in the first cycle to 83.44 with 91.67% learning completeness in the second cycle at KKM 70.00. Based on the results of the study, the use of OK KETUK learning media can improve students' understanding of the material for the periodic system of elements.
Book chapters on the topic "Shuffling back"
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Hill, Constance Valis. "Class Act and Challenge." In Brotherhood in Rhythm. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780197523971.003.0006.
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This chapter gives a historic explication of the Nicholas Brothers’ style of jazz tap dancing that was simultaneously a class act—a precision-style dancing of impeccable execution—and a mode of call-and-response interplay in which the brothers challenged each other in playful camaraderie to “up” each other in steps. At the turn of the century, concurrent with musical comedy dance teams working in the blackface tradition, an elite group of black performers rejected the minstrel show stereotype of the grinning-and- shuffling blackface clown, insisting upon the perfection of sound, step, and manner. Such pioneering class-act teams as Cole and Johnson, Johnson and Dean, and Greenlee and Drayton aspired to a purely artistic expression that was driven by the desire for respectability and equality on the American concert stage. The Nicholas Brothers transformed the fierce competition of the challenge dance by combining their specialties in building their routine to a climax; and trading rhythms back and forth in a lively and witty dialog that developed complex rhythmical ideas.
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Dua, Shelza, Bharath Nancharla, and Maanak Gupta. "Cosine Transformed Chaos Function and Block Scrambling-Based Image Encryption." In Handbook of Research on Machine Learning Techniques for Pattern Recognition and Information Security. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-3299-7.ch008.
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The authors propose an image encryption process based on chaos that uses block scrambling to reduce the correlation among the neighboring pixels and random order substitution for slightly changing the value of the pixel. The chaotic sequence for encrypting the image is generated by using two 3D logistic maps called enhanced logistic map and intertwining logistic map; the cos function helps in reducing linearity. The entire encryption process is composed of scrambling, image rotation, and random order substitution. Scrambling is used for permuting the pixels in the image so that we can reduce the correlation among the neighboring pixels, and this is followed by image rotation which can ensure that shuffling of pixels is done to the remaining pixels in the image, and at last the authors use random order substitution where they bring the small change in the pixel value. The proposed method has the capability of encrypting digital colored images into cipher form with high security, which allows only authorized ones who hold the correct secret key to decrypt the images back to original form.
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Atkins, Joseph B. "To Paris, Texas, and Beyond." In Harry Dean Stanton. University Press of Kentucky, 2020. http://dx.doi.org/10.5810/kentucky/9780813180106.003.0010.
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This chapter looks at Harry Dean Stanton's greatest film from a wide range of aspects -- Ry Cooder's music, Robbie Müller's cinematography, Sam Shepard's writing, Wim Wenders' direction, and, of course, the acting, not only Harry Dean's but also that of Nastassja Kinski, Dean Stockwell, Aurore Clément, and Hunter Carson. It traces the genesis of the story that grew out of Shepard's imagination and Wenders' fascination with American iconography. Important, too, was Shepard's encounter with Harry Dean in a Santa Fe bar and subsequent casting of him for the role of Travis Henderson, the mysterious desert wanderer searching for some kind of redemption after abandoning his wife and son. Each of the key contributors to the film -- whether in music, scenery, or the story -- had his or her own journey that led to this very American film that is yet so imbued with European sensibilities. Shot in chronological order and thus with cast and crew shuffling back and forth between Texas and Los Angeles, Paris, Texas was a test for all involved, but it became the film that made Harry Dean most proud and the one that marked the peak of his career.