Relevant bibliographies by topics / Basso model

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Academic literature on the topic 'Basso model'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Basso model"

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Nilova, Vera I. "Typological Model of the Basso Ostinato in Carl Nielsen’s Fifth Symphony." Music Scholarship / Problemy Muzykal'noj Nauki, no. 2 (2021): 232–42. http://dx.doi.org/10.33779/2587-6341.2021.2.232-242.

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Fana, Girma, Diriba Tadese, Hiwot Sebsibe, and Ramesh P. S. Verma. "Multi-Environment Trial Analysis of Food Barley in Ethiopia Using AMMI and GGE Biplot Methods." Journal of Plant Breeding and Genetics 6, no. 3 (December 26, 2018): 75–85. http://dx.doi.org/10.33687/pbg.006.03.2579.

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Food barley released varieties were tested in 2012 for performance across major environments in Ethiopia consisting of 12 varieties Diribe, Tilla, Abbay, Biftu, Defo, Dinsho, Mulu, Setegn, Misiratch, Basso, Mezezo and local checks over six locations Gergera, Estayish, Shambu, Arjo, Robe and Sinana. The objective was to determine genotype by environment interaction using AMMI and GGE biplot, compare the two models for identifying the adaptable and stable genotypes. Sinana was identified as the high yielding environment and MULU the high yielding variety with mean yields of 3466.31 and 3137.67 kg/ha, respectively. The mean yield at Estayish was lower (1535 kg/ha) than other environments whereas lower yield (2212.16 kg/ha) was also obtained from the variety DINSHO. The AMMI analysis of Variance indicated that 47% of the total sum of squares is attributed to the Environmental effect, 8% to the genotypic effect and 25% to the interaction. The first three principal components of the GEI explained 81% of the variation. Genotypes Basso, Biftu and Setegn were the most stable whereas Diribe was unstable. Variety Mulu was identified as the winner genotype by AMMI model whereas Diribe was identified as the winner by the GGE model. GGE model better explains the which-won-where scenario and hence preferred to AMMI model. The discriminating and representative view of the GGE biplot depicted that Sinana and Shambu are discriminating environments whereas Sinana, Estayish and Gergera are representative environments. Therefore, Sinana is the ideal environment for discriminating genotypes and representing other environments for selecting ideal genotypes.
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Swartz, Karin R., Nicole N. Scheff, Kelly N. Roberts, and Dominic B. Fee. "Exacerbation of spinal cord injury due to static compression occurring early after onset." Journal of Neurosurgery: Spine 11, no. 5 (November 2009): 570–74. http://dx.doi.org/10.3171/2009.5.spine08588.

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Object The authors used a rat model to assess spinal cord compression following an incomplete spinal cord injury (SCI). Methods Incomplete SCI was created in the thoracic spinal cord in a novel application of a rodent spinal cord compression model. A moderate impaction force was applied instantaneously to the spinal cord and was followed by 0 seconds, 10 seconds, 30 seconds, or 5 minutes of continued compression (termed “dwell”). The different groups were assessed by behavioral testing with the Basso, Beattie, Bresnahan locomotor rating scale, and with histological injury quantification and morphometrical analysis. Results Compression after the SCI resulted in worsened Basso, Beattie, Bresnahan scale scores; however, the duration of compression was not significant. Compression did not significantly affect the percentage of spared total tissue, percent spared total white matter, or percent spared total gray matter. Percent spared tissue at the epicenter of injury was statistically worsened by compression but not in a time-dependent manner. Conclusions The authors' results suggest that spinal cord compression after the initial injury is an additional mechanism by which SCI worsens, and that the mechanism of this injury occurs rapidly. These data, however, do not support duration of compression as a significant variable.
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Aoki, Masanori, Haruhiko Kishima, Kazuhiro Yoshimura, Masahiro Ishihara, Masaki Ueno, Katsuhiko Hata, Toshihide Yamashita, Koichi Iwatsuki, and Toshiki Yoshimine. "Limited functional recovery in rats with complete spinal cord injury after transplantation of whole-layer olfactory mucosa." Journal of Neurosurgery: Spine 12, no. 2 (February 2010): 122–30. http://dx.doi.org/10.3171/2009.9.spine09233.

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Object The olfactory mucosa (OM) consists of 2 layers, the epithelium and the lamina propria. Attempts have been made to restore motor function in rat models of spinal cord injury (SCI) by transplanting olfactory ensheathing cells from the lamina propria, but there has been no attempt to transplant the OM in animal models. To investigate the potential of the OM to restore motor function, the authors developed a rat model of SCI and delayed transplantation of syngenic OM. Methods Two weeks after complete transection of the spinal cord at the T-10 level in Wistar rats, pieces of syngenic whole-layer OM were transplanted into the lesion. Rats that underwent respiratory mucosa transplantation were used as controls. The authors evaluated the locomotor activity according to the Basso-Beattie-Bresnahan scale for 8 weeks after transplantation. Obtained spinal cords were analyzed histologically. Results The OM transplantation rats showed significantly greater hindlimb locomotor recovery than the respiratory mucosa–transplanted rats. However, the recovery was limited according to the Basso-Beattie-Bresnahan scale. In the histological examination, the serotonergic raphespinal tract was regenerated. The pseudocyst cavity volume in the vicinity of the SCI lesion correlated negatively with the functional recovery. Conclusions Transplantation of whole-layer OM in rats contributes to functional recovery from SCI, but the effect is limited. In addition to OM transplantation, other means would be necessary for better outcomes in clinical situations.
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Hendrix, Sven, Selien Sanchez, Elissia Ventriglia, and Stefanie Lemmens. "HDAC8 Inhibition Reduces Lesional Iba-1+ Cell Infiltration after Spinal Cord Injury without Effects on Functional Recovery." International Journal of Molecular Sciences 21, no. 12 (June 25, 2020): 4539. http://dx.doi.org/10.3390/ijms21124539.

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Pan-histone deacetylase (HDAC) inhibition with valproic acid (VPA) has beneficial effects after spinal cord injury (SCI), although with side effects. We focused on specific HDAC8 inhibition, because it is known to reduce anti-inflammatory mediators produced by macrophages (Mφ). We hypothesized that HDAC8 inhibition improves functional recovery after SCI by reducing pro-inflammatory classically activated Mφ. Specific HDAC8 inhibition with PCI-34051 reduced the numbers of perilesional Mφ as measured by histological analyses, but did not improve functional recovery (Basso Mouse Scale). We could not reproduce the published improvement of functional recovery described in contusion SCI models using VPA in our T-cut hemisection SCI model. The presence of spared fibers might be the underlying reason for the conflicting data in different SCI models.
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Legos, Jeffrey J., Kurt R. Gritman, Ronald F. Tuma, and William F. Young. "Coadministration of Methylprednisolone with Hypertonic Saline Solution Improves Overall Neurological Function and Survival Rates in a Chronic Model of Spinal Cord Injury." Neurosurgery 49, no. 6 (December 1, 2001): 1427–33. http://dx.doi.org/10.1097/00006123-200112000-00022.

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ABSTRACT OBJECTIVE We previously demonstrated that administration of 7.5% hypertonic saline (HS) significantly improved spinal cord blood flow and neurological outcomes after spinal cord injury. The aim of this study was to determine whether hypertonicity would enhance the effects of methylprednisolone (MP), further improving neurological function. METHODS Rat spinal cords were compressed for 10 minutes with 50 g of weight, and neurological function was assessed for 28 days, using the Basso-Beattie-Bresnahan locomotor rating scale. The control group received an intravenous injection of isotonic saline (IS) (5 ml/kg). Group 1 received an intravenous injection of 7.5% HS (5 ml/kg). Group 2 received an intravenous injection of MP (30 mg/kg) and IS (5 ml/kg). Group 3 received an intravenous injection of MP (30 mg/kg) administered with 7.5% HS (5 ml/kg). RESULTS At 24 hours after spinal cord injury, the combination of MP plus HS provided significant (P < 0.01) neurological improvements, compared with all other treatment groups. At 10 days after injury, the animals that had received MP plus HS exhibited significantly (P < 0.01) higher Basso-Beattie-Bresnahan scores, compared with the MP plus IS and control groups. The median survival time was significantly (P < 0.01) increased for the MP plus HS group (28 d), compared with the MP plus IS group (16 d). Because of the dramatic decrease in survival rates at 28 days after injury, there was a significant (P < 0.01) difference in neurological function only between the MP plus HS group and the control group. CONCLUSION The results indicate that the administration of HS may enhance the delivery of MP and prevent immunosuppression, leading to improvements in overall neurological function and survival rates after spinal cord injury.
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Lei, Fei, Wen He, Xinggui Tian, Qingzhong Zhou, Lipeng Zheng, Jianping Kang, Yueming Song, and Daxiong Feng. "GSK-3 Inhibitor Promotes Neuronal Cell Regeneration and Functional Recovery in a Rat Model of Spinal Cord Injury." BioMed Research International 2019 (August 4, 2019): 1–8. http://dx.doi.org/10.1155/2019/9628065.

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The reparative process following spinal cord injury (SCI) is extremely complicated. Cells in the microenvironment express multiple inhibitory factors that affect axonal regeneration over a prolonged period of time. The axon growth inhibitory factor glycogen synthase kinase-3 (GSK-3) is an important factor during these processes. TDZD-8 (4-benzyl-2-methyl-1,2,4-thiadiazolidine-3,5-dione) is the most effective and specific non-ATP-competitive inhibitor of GSK-3. Here, we show that administering TDZD-8 after SCI was associated with significantly inhibited neuronal apoptosis, upregulated GAP-43 expression, increased density of cortical spinal tract fibers around areas of injury, and increased Basso, Beattie, and Bresnahan (BBB) scores in the lower limbs. These findings support the notion that GSK-3 inhibitors promote neuronal cell regeneration and lower limb functional recovery.
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Schicatano, Edward J., Michele A. Basso, and Craig Evinger. "Animal Model Explains the Origins of the Cranial Dystonia Benign Essential Blepharospasm." Journal of Neurophysiology 77, no. 5 (May 1, 1997): 2842–46. http://dx.doi.org/10.1152/jn.1997.77.5.2842.

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Schicatano, Edward J., Michele A. Basso, and Craig Evinger. Animal model explains the origins of the cranial dystonia benign essential blepharospasm. J. Neurophysiol. 77: 2842–2846, 1997. The current study demonstrates that combining two mild alterations to the rat trigeminal reflex blink system reproduces the symptoms of benign essential blepharospasm, a cranial dystonia characterized by uncontrollable spasms of blinking. The first modification, a small striatal dopamine depletion, reduces the tonic inhibition of trigeminal reflex blink circuits. The second alteration, a slight weakening of the lid-closing orbicularis oculi muscle, begins an adaptive increase in the drive on trigeminal sensory-motor blink circuits that initiates blepharospasm. By themselves, neither of these modifications causes spasms of lid closure, but combined, they induce bilateral forceful blinking and spasms of lid closure. A two-factor model based on these rodent experiments may explain the development of benign essential blepharospasm in humans. The first factor, a subclinical loss of striatal dopamine, creates a permissive environment within the trigeminal blink circuits. The second factor, an external ophthalmic insult, precipitates benign essential blepharospasm. This two-factor model may also be applicable to the genesis of other cranial dystonias.
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Gao, Kai, Guannan Wang, Yansong Wang, Donghe Han, Jing Bi, Yajiang Yuan, Tianchen Yao, Zhanghui Wan, Haihong Li, and Xifan Mei. "Neuroprotective Effect of Simvastatin via Inducing the Autophagy on Spinal Cord Injury in the Rat Model." BioMed Research International 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/260161.

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Simvastatin, an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A reductase, is invariably used to treat cardiovascular diseases. Simvastatin has been recently demonstrated to have a neuroprotective effect in nervous system diseases. The present study aimed to further verify the neuroprotection and molecular mechanism of simvastatin on rats after spinal cord injury (SCI). The expression of Beclin-1 and LC3-B was evidently enhanced at postoperation days 3 and 5, respectively. However, the reduction of the mTOR protein and ribosomal protein S6 kinase p70 subtype (p70S6K) phosphorylation level occurred at the same time after SCI. Simvastatin significantly increased the expression of brain-derived neurotrophic factor (BDNF) and glial cell line-derived neurotrophic factor (GDNF). Meanwhile, immunofluorescence results indicated that the expression of chondroitin sulfate proteoglycan (CSPG) and caspase-3 protein was obviously reduced by simvastatin. Furthermore, Nissl staining and Basso, Beattie, and Bresnahan (BBB) scores showed that the quantity and function of motor neurons were visibly preserved by simvastatin after SCI. The findings of this study showed that simvastatin induced autophagy by inhibiting the mTOR signaling pathway and contributed to neuroprotection after SCI.
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Šulla, I., V. Balik, J. Petrovičová, V. Almášiová, K. Holovská, and Z. Oroszová. "Rat Spinal Cord Injury Experimental Model." Folia Veterinaria 60, no. 2 (June 1, 2016): 41–46. http://dx.doi.org/10.1515/fv-2016-0017.

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Abstract Spinal cord injuries (SCI) with their tragic consequences belong to the most serious pathological conditions. That is why they have stimulated basic research workers, as well as health care practitioners, to search for an effective treatment for decades. Animal experimental models have been essential in these efforts. We have jointly decided to test and standardize one of the spinal cord injury compression models in rats. Twentythree adult female Wistar rats weighing 250-320 g were utilized. Employing general anaesthesia along with a mixture of sevoflurane with O2, 2 rats (sham controls) had their vertebral arch of either Th8 or Th9 vertebra removed (laminectomy). The other 21 experimental rats with similar laminectomies were divided into 3 subgroups (n = 7) which received compression impact forces of 30, 40 or 50 g (subgroups-1, -2, and -3, respectively) applied on their exposed spinal medulla for 15 minutes. All rats were observed for 28 days after the experimental procedure and their motor functions were assessed by the Basso, Beattie, Bresnahan (BBB) test 6 hours, 7, 21 and 28 days after the simulated SCI. All 23 rats survived the surgical procedures. The control rats were without any neurological deficits. There were, in every experimental subgroup, 1 or 2 rats with extreme BBB scores. So the rats with the maximum and minimum BBB values were excluded. Then, the results acquired in the residual 5 rats in each group were averaged and statistically analysed by the Tukey multiple comparisons test. Statistically significant intersubgroup differences were found at all survival times equal to or longer than 7 post SCI days. The goal of the SCI experiment was to generate a reproducible and reliable, submaximal spinal cord trauma model. The statistical analyses demonstrated that this objective was best achieved in the subgroup-2 with the 40 g compression.
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Dissertations / Theses on the topic "Basso model"

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Rebelo, Helene Albuquerque. "Uma comparação entre a PPP e o enfoque da produtividade na taxa de câmbio de longo prazo." Universidade Presbiteriana Mackenzie, 2014. http://tede.mackenzie.br/jspui/handle/tede/636.

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Made available in DSpace on 2016-03-15T19:26:16Z (GMT). No. of bitstreams: 1 Helene Albuquerque Rebelo 1.pdf: 1046658 bytes, checksum: 341e6608b9c7f265ac5e1303f07c7667 (MD5) Previous issue date: 2014-10-23
Fundo Mackenzie de Pesquisa
The dissertation examines the behavior of the exchange rate in the long term from the perspective of the classical model of purchasing power parity theory (PPP), developed empirically by Cassel and the alternative model proposed by Basso originating from the Marxist benchmark, which emphasizes prices and productivities to determine the exchange rate. The exchange rate behavior is examined for three countries over the 1977-2006 period, with annual frequency. To test the models, it was used the consumer price index (CPI), the GDP, the value-added price index and gross producer price index (EU KLEMS database). The essay uses the causality tests of Johansen, the Dickey-Fuller and Phillips-Perron unit root tests, the VAR (vector autoregression) and VEC (vector error correction) models and performing a projection with the Model Confidence Set. It is ascertained that PPP was not supported for any of the 12 models generated. In Basso s approach, the 48 models generated, cointegration was found in only four models, therefore it is not possible to generalize the new model.
A dissertação examina o comportamento da taxa de câmbio no longo prazo sobre a perspectiva do modelo clássico da paridade do poder de compra (PPC) ou purchasing power parity theory (PPP), desenvolvido empiricamente por Cassel e do modelo alternativo proposto por Basso oriundo do referencial marxista, enfatizando preços e produtividades para determinar a taxa de câmbio. Examina-se o comportamento da taxa de câmbio para três países no período de 1977 a 2006, com frequência anual. Para testar os modelos, foram empregados o índice de preço ao consumidor (IPC), o deflator do PIB, o deflator dos valores agregados e o deflator de produção total (base de dados EU KLEMS). O trabalho utiliza o teste de causalidade de Johansen, os testes de raiz unitária de Dickey e Fuller e Phillips-Perron, os modelos de VAR (vetores autorregressivos) e VEC (vetores autorregressivos com correção de erro) e é feito projeção com Model Confidence Set. Constata-se que a PPP não foi corroborada para nenhum dos 12 modelos gerados. Na abordagem de Basso, dos 48 modelos gerados, encontrou-se cointegração apenas em quatro, portanto, não é possível generalizar o novo modelo.
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Bassi, Cristian [Verfasser]. "Integrable sigma models from affine Gaudin models / Cristian Bassi." Hamburg : Staats- und Universitätsbibliothek Hamburg Carl von Ossietzky, 2021. http://d-nb.info/1237050480/34.

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Löfberg, Jezper, and Albin Lindström. "Modelling the adoption of SPACs with Bass’ diffusion model." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-54577.

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The recent observed growth in the diffusion of Special Purpose Acquisition Companies phenomena on the U.S stock market may be analyzed from a mathematical standpoint, where different approaches of the Bass Diffusion Model might be utilized. The Bass diffusion model originates from analysis of product diffusion, where only a few applications have been seen by financial scholars. The thesis takes a multi analytical approach to examine the phenomena, where multiple regression analysis and Bayesian statistics are used in the parameter estimation processes. Estimated parameter are applied in three different scenarios of expressing the Bass diffusion model in a discrete time state. By utilizing these different approaches that arise, the study shows that the diffusion of Special Purpose Acquisition Companies Initial Public Offerings in fact can be analyzed from a mathematical standpoint utilizing the Bass diffusion model. Some approaches and scenarios indicate better results in terms of fitting the diffusion, while purposing practical actualities towards the reader and market practitioners. The study further purposes potential modifications that might improve the results of fitting the phenomena
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Sanejouand, Yves-Henri. "Les modes normaux de basse fréquence des protéines." Habilitation à diriger des recherches, Université Claude Bernard - Lyon I, 2007. http://tel.archives-ouvertes.fr/tel-00258781.

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Les mouvements de basse fréquence des protéines, tels qu'on peut les calculer via l'approximation des petits déplacements (approximation harmonique), ressemblent souvent beaucoup à des mouvements fonctionnels, tels qu'on peut les observer par cristallographie des rayons X. Ce résultat semble très robuste puisqu'il a été obtenu, tout d'abord, en partant d'une description des protéines à l'échelle atomique puis, plus récemment, de descriptions à "gros grains" (des modèles de type réseau élastique). S'appuyant sur ce constat, des applications variées ont été proposées, notamment pour faciliter la résolution de structures ou pour améliorer leur qualité (ajustement dans des enveloppes obtenues par cryomicroscopie électronique, remplacement moléculaire...). Ce mémoire est une revue des résultats obtenus, dans laquelle mes contributions sont plus particulièrement mises en avant. Parmi les développements les plus récents, sont évoquées des tentatives de faire le lien entre modèles à l'échelle atomique et modèles à gros grains, ou bien de complexifier ces derniers, en y incluant des termes anharmoniques.
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Cognault, Aurore. "Caractérisation de SER Basse Fréquence et Modes Caractéristiques." Phd thesis, Ecole Centrale Paris, 2009. http://tel.archives-ouvertes.fr/tel-00453298.

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La SER, est la grandeur qui permet de quantifier le pouvoir réflecteur d'un objet, ou a contrario sa discrétion électromagnétique. Maîtriser la SER, voire la diminuer, est un enjeu majeur dans le domaine aéronautique de défense. C'est en particulier un gage de survivabilité pour les aéronefs. Historiquement, les fréquences RADAR d'intérêt étaient celles de la bande Super Haute Fréquence, ce qui équivaut à des longueurs d'onde de 2 à 30 centimètres. Des outils d'analyse adaptés ainsi que des moyens de mesure ou de caractérisation de la SER ont été mis au point. Ils se sont révélés extrêmement performants. On peut citer par exemple la chambre anéchoïque CAMELIA du CESTA. En revanche, dans le domaine des basses fréquences, il est plus délicat de réaliser des mesures précises. Pour des longueurs d'onde de 1 à 5 mètres, l'épaisseur des absorbants est souvent trop faible ; même les dimensions des chambres anéchoïques ne représentent que quelques longueurs d'onde. Notre objectif, lors de cette thèse, était de proposer et d'étudier des algorithmes nouveaux permettant d'améliorer ou de faciliter la caractérisation de la SER en basse fréquence. La notion de courants caractéristiques, introduite par Harrington et Mautz dans les années 70, puis reprise par Y. Morel dans le cas d'objets parfaitement conducteurs, permet la décomposition d'un courant induit quelconque en courants élémentaires. Les modes caractéristiques sont obtenus en faisant rayonner ces courants caractéristiques. Cependant, il n'existe pas d'outil de détermination des modes lorsque l'objet n'est plus parfaitement conducteur. Nous nous sommes donc dotés d'un tel outil, que nous avons construit et validé. Pour cela, nous avons repris dans un premier temps le cadre mathématique qui permet de définir l'opérateur de Perturbation, ses propriétés mathématiques et sa décomposition en éléments propres. Nous avons montré que cet opérateur discrétisé conserve ses propriétés mathématiques. Nous avons ensuite validé notre méthode de calcul direct des modes caractéristiques, issus de la diagonalisation de l'opérateur de perturbation discrétisé. Dans un deuxième temps, nous avons mené des études phénoménologiques. Nous avons tout d'abord observé l'évolution des éléments propres de l'opérateur de perturbation en fonction de l'impédance, et nous nous sommes intéressés au cas particulier de l'impédance égale à 1. Nous avons ensuite observé les phénomènes lorsque la fréquence évolue. En nous concentrant sur les valeurs propres, nous avons pu différencier deux types de modes. Enfin, nous avons détaillé quelques exemples d'applications concrètes de cette méthode de détermination des modes, qui permettent d'améliorer ou de faciliter la caractérisation de la SER en basse fréquence. L'outil ORFE (Outil de Reformulation, Filtrage et Extrapolation de données) permet d'atténuer les termes d'erreurs inhérents à toute caractérisation, et d'extrapoler des données existantes à des cas de figure non acquis ou non accessibles en mesure. Il a donné lieu à un brevet. Un outil d'interpolation de SER en basse fréquence a aussi été construit. Il permet d'obtenir de meilleurs résultats que l'interpolation linéaire de la SER. Nous avons aussi mis en place une méthode d'imagerie basse fréquence. Elle permet de localiser d'éventuels défauts de métallisation de l'objet considéré, en utilisant la base des courants caractéristiques. Enfin, nous avons présenté une méthodologie de caractérisation de SER qui intègre les limites des moyens de mesure. Nous avons mis en évidence que cette caractérisation donne une information absolue sur la SER de l'objet, dans un périmètre de validité. Un brevet a été déposé sur cette méthode.
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Cognault, Aurore Magoulès Frédéric. "Caractérisation de SER Basse Fréquence et Modes Caractéristiques." S. l. : S. n, 2009. http://theses.abes.fr/2009ECAP0016.

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Shoemaker, Michael H. "A Bass Diffusion Model Analysis: Understanding Alternative Fuel Vehicle Sales." Scholarship @ Claremont, 2012. http://scholarship.claremont.edu/cmc_theses/399.

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Frank M. Bass developed the Bass Diffusion Model to predict how innovative consumer durable products diffuse through consumer markets. This thesis will use data from 1999-2011 to examine the applicability of the Bass Diffusion Model to the introduction of alternative fuel vehicles (AFVs) in the automobile market. The findings in this thesis indicate the Bass Diffusion Model fit the diffusion pattern exhibited by AFVs well, but failed to accurately forecast diffusion patterns outside a given range of data. This thesis investigates potential reasons for the inaccurate 'Out of Sample Forecast', and gives recommendations for directions of future research on AFV diffusion.
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Shen, Yingzhen. "Forecasting Twitter topic popularity using bass diffusion model and machine learning." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99575.

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Thesis: S.M. in Transportation, Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 91-93).
Today social network websites like Twitter are important information sources for a company's marketing, logistics and supply chain. Sometimes a topic about a product will "explode" at a "peak day," suddenly being talked about by a large number of users. Predicting the diffusion process of a Twitter topic is meaningful for a company to forecast demand, and plan ahead to dispatch its products. In this study, we collected Twitter data on 220 topics, covering a wide range of fields. And we created 12 features for each topic at each time stage, e.g. number of tweets mentioning this topic per hour, number of followers of users already mentioning this topic, and percentage of root tweets among all tweets. The task in this study is to predict the total mention count within the whole time horizon, 180 days, as early and accurately as possible. To complete this task, we applied two models - fitting the curve denoting topic popularity (mention count curve) by Bass diffusion model; and using machine learning models including K-nearest-neighbor, linear regression, bagged tree, and ensemble to learn the topic popularity as a function of the features we created. The results of this study reveal that the Basic Bass model captures the underlying mechanism of the Twitter topic development process. And we can analogue Twitter topics' adoption to a new product's diffusion. Using only mention count, over the whole time horizon, the Bass model has much better predictive accuracy, compared to machine learning models with extra features. However, even with the best model (the Bass model) and focusing on the subset of topics with better predictability, predictive accuracy is still not good enough before the "explosion day." This is because "explosion" is usually triggered by news outside Twitter, and therefore is hard to predict without information outside Twitter.
by Yingzhen Shen.
S.M. in Transportation
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Kulakovskis, Darius. "Balso kokybės vertinimo modulio „Asterisk" VoIP žinybinei stočiai kūrimas ir tyrimas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140611_081442-70060.

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Baigiamajame magistro darbe sukurtas balso kokybės vertinimo modulis „Asterisk“ VoIP žinybinei stočiai ir atliktas sukurto modulio tyrimas. Atlikta SIP protokolo architektūros apžvalga, išnagrinėti balso kokybės vertinimo būdai bei įrankiai. Apžvelgtas balso kokybės vertinimo būdų palyginimas mokslinėje literatūroje. Pasinaudojus „libpcap“ biblioteka sukurtas balso kokybės vertinimo modulis. Sukurtas modulis analizuoja RTCP paketus ir vertina balso kokybę pagal ITU-T E modelį. Atliktas balso kokybės tyrimas naudojant sukurtą modulį, o rezultatai palyginti su PESQ algoritmu gautais rezultatais. Atliekant balso kokybės tyrimą buvo nagrinėjami trys pagrindiniai veiksniai - vėlinimas, paketų praradimas ir vėlinimo laikų švytavimas. Nustatyta, kad daugeliu atvejų balso kokybės vertinimo moduliu gauti parametrai gali būti laikomi patikimais balso kokybės indikatoriais. Darbą sudaro 7 dalys: įvadas ir užduoties analizė, SIP architektūros apžvalga, balso kokybės vertinimo būdų bei įrankių apžvalga, balso kokybės vertinimo modulis, balso kokybės tyrimas naudojant sukurtą modulį, rezultatų apibendrinimas, literatūros ir informacinių šaltinių sąrašas.
In this master thesis research of voice quality estimation system for Asterisk PBX was performed. SIP architecture was reviewed and voice quality estimation methods and tools were described. Scientific literature about voice quality estimation methods was reviewed. Voice quality estimation system was created by using “libpcap” library. The created system uses RTCP packets to estimate voice quality based on ITU-T E-model. Research of voice quality was performed by using the created system and the results were compared to PESQ algorithm results. Three most important parameters were considered during voice quality estimation - delay, packet loss and jitter. Research has confirmed that in most cases measurements performed with the created system can be considered reliable voice quality parameters. Structure consists of 7 chapters: introduction and task analysis, review of SIP architecture, review of voice quality estimation methods and tools, voice quality estimation system, research of voice quality by using the created system, summary of thesis results, references.
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Ohene-Asah, Ayeh. "An application of the Bass diffusion model to border security and illegal immigration /." Online version of thesis, 2009. http://hdl.handle.net/1850/10848.

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Books on the topic "Basso model"

1

McCollum, Randy A. Bank protection, Bass Location, Willamette River, Oregon: Hydraulic model investigation. Vicksburg, Miss: Dept. of the Army, Waterways Experiment Station, Corps of Engineers, 1987.

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Robert, Jean-Pierre. Les modes de jeu de la contrebasse: Un dictionnaire de sons. Paris, France: Editions Musica Guild, 1995.

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Hamilton, Karen. Habitat suitability index models and instream flow suitability index curves: White bass. Washington, DC: Western Energy and Land Use Team, Division of Biological Services, Research and Development, Fish and Wildlife Service, U.S. Dept. of the Interior, 1985.

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Wright, Gordon P. Frank M. Bass and research in consumer choice behavior. West Lafayette, Ind: Institute for Research in the Behavioral, Economic, and Management Sciences, Krannert Graduate School of Management, Purdue University, 1986.

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Hurley, Noel M. Transport simulation of striped bass eggs in the Congaree, Wateree, and Santee rivers, South Carolina. Columbia, S.C: U.S. Geological Survey, 1991.

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Crance, Johnie H. Habitat suitability index models and instream flow suitability curves: Shortnose sturgeon. Washington, DC: National Ecology Center, Division of Wildlife and Contaminant Research, Fish and Wildlife Service, U.S. Dept. of the Interior, 1986.

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Yunus, Aydin Kerim, and PICES-GLOBEC International Program on Climate Change and Carrying Capacity., eds. The BASS/MODEL report on trophic models of the subarctic Pacific basin ecosystems. Sidney, B.C: North Pacific Marine Science Organization, 2003.

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A, McFarlane G., North Pacific Marine Science Organization., Global Ocean Ecosystems Dynamics (Program), and PICES-GLOBEC International Program on Climate Change and Carrying Capacity., eds. Report of the 2000 BASS, MODEL, MONITOR and REX workshops, and the 2001 BASS/MODEL workshop. Sidney, B.C: North Pacific Marine Science Organization (PICES), 2001.

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Douse, Cliff. Scales and Modes for Bass Guitar. Music Sales Ltd, 1993.

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Matheos, Chris. Mel Bay's 50 Modal Slap Bass Workouts. Mel Bay Publications, 2002.

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Book chapters on the topic "Basso model"

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Sokele, Mladen, and Luiz Moutinho. "Bass Model with Explanatory Parameters." In Innovative Research Methodologies in Management, 145–64. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-64394-6_7.

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Yan, Yan, Zhaowei Tan, Xiaofeng Gao, Shaojie Tang, and Guihai Chen. "STH-Bass: A Spatial-Temporal Heterogeneous Bass Model to Predict Single-Tweet Popularity." In Database Systems for Advanced Applications, 18–32. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-32049-6_2.

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Brusch, Michael, Sebastian Fischer, and Stephan Szuppa. "The Bass Model as Integrative Diffusion Model: A Comparison of Parameter Influences." In Data Science, Learning by Latent Structures, and Knowledge Discovery, 229–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44983-7_20.

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Gandhi, Neha, Himanshu Sharma, Anu G. Aggarwal, and Abhishek Tandon. "Reliability Growth Modeling for OSS: A Method Combining the Bass Model and Imperfect Debugging." In Smart Innovations in Communication and Computational Sciences, 23–34. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8968-8_3.

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Holliday, James R., Donald L. Turcotte, and John B. Rundle. "A Review of Earthquake Statistics: Fault and Seismicity-Based Models, ETAS and BASS." In Earth Sciences and Mathematics, 1003–24. Basel: Birkhäuser Basel, 2008. http://dx.doi.org/10.1007/978-3-7643-8907-9_2.

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Zhu, Yue, Koji Tokimatsu, and Mitsutaka Matsumoto. "Study on the Diffusion of NGVs in Japan and Other Nations Using the Bass Model." In Sustainability Through Innovation in Product Life Cycle Design, 765–78. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-0471-1_52.

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Scaglione, Miriam, Yasuo Ohe, and Colin Johnson. "Tourism Management in Japan and Switzerland: Is Japan Leapfrogging Traditional DMO’s Models? A Research Agenda." In Information and Communication Technologies in Tourism 2021, 389–402. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65785-7_37.

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AbstractSimilarities may be seen in the development of tourism in Japan and Switzerland during the nineteenth and twentieth centuries, especially in terms of the origins and purpose of their respective national tourism offices. In the twenty-first century, however, fundamental differences became evident. During the first decades of the twenty-first century, Switzerland, that had been quick to see the opportunities of e-tourism, was less dynamic in response to the fourth and fifth industrial revolutions, whereas the opposite happened in Japan. Switzerland as with Austria and Germany, adopted a traditional concept of DMO’s that was location-base and limited regionally by administrative boundaries. The Information and Communication Technologies (ICT) development after Web1.0 and the emergence of mobile applications have challenged this concept. A more contemporary view is based more on network travel and visitor flows rather than physical territory. The Japan Central government decided to adopt the western DMO concept as regional tourism policy, but relatively late in 2016.The aim of this innovative research project is to analyze the adoption/implementation of the new concept of DMO’s focusing on Switzerland and Japan. For Switzerland, the main barrier is the scarcity of data given the slower uptake of the technology emanating from the fourth and fifth industrial revolutions. In Japan, the situation may be seen to be inverted, given the country’s proclivity to adopt the advantages from the latest industrial revolution. This may mean that Japan could leapfrog the traditional DMO concept. This research presents the Bass’ analysis of DMO’s websites as a proxy of DMO concepts – traditional or new generation.
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"Biology and Management of Inland Striped Bass and Hybrid Striped Bass." In Biology and Management of Inland Striped Bass and Hybrid Striped Bass, edited by Micheal S. Allen and Daniel Gwinn. American Fisheries Society, 2013. http://dx.doi.org/10.47886/9781934874363.ch20.

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<em>Abstract</em>.—Population models are frequently used to assess stocks and inform management, but use of models for inland striped bass <em>Morone saxatilis</em> fisheries is rare in the literature. We summarize three common types of population models and describe how they could aid management of striped bass and hybrid striped bass fisheries. Yield-per-recruit models are ideal for identifying growth overfishing and optimum size at harvest to maximize yield. Time-dynamic, age-structured models are useful for evaluating effects of variable recruitment on angler catch and effects of temporary changes in model parameters (e.g., fish kills, changes in growth) on model output. Catch-at-age models can be used to measure recruitment to age 1 for inland striped bass fisheries and for quantifying fishing mortality rates. Catch-at-age models can also improve the utility of creel survey data and help evaluate the efficacy of stocking programs by estimating age-1 recruits (from model) per stocked fish (from hatchery). Population models force investigators to be explicit about their hypotheses regarding fisheries systems, identify data gaps, and allow assessment of potential impacts of management actions on the fishery. The examples shown here can be used to improve striped bass and hybrid striped bass monitoring and management.
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"Biology and Management of Inland Striped Bass and Hybrid Striped Bass." In Biology and Management of Inland Striped Bass and Hybrid Striped Bass, edited by Barbara E. Taylor, James S. Bulak, and Henry N. McKellar. American Fisheries Society, 2013. http://dx.doi.org/10.47886/9781934874363.ch9.

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<em>Abstract</em>.—A CE-QUAL-W2 water quality model was used to characterize the availability of striped bass <em>Morone saxatilis</em> habitat in Lake Greenwood, South Carolina, during 2004 and 2005. Although the lake has a productive fishery, water quality and aquatic habitat are affected by nutrient loading, algal blooms, and extensive oxygen depletion in the bottom waters. The main objectives were to characterize habitat availability and predict the implications of a change in phosphorus loading from the Saluda and Reedy rivers. The baseline scenario of the model showed that habitat was most critical during July and August, when as little of 5% of the reservoir contained tolerable habitat (temperature <28°C and dissolved oxygen >2 mg/L). Favorable habitat (temperature <25°C and dissolved oxygen >2 mg/L) was usually absent for most of July and August. Pulses of higher inflow or freshets produced short-term increases in tolerable habitat, especially in the upper end of the reservoir. Phosphorus-loading scenarios predicted that large reductions (50% or more) would be required to improve habitat substantially during midsummer. For the manager of a striped bass fishery, water quality models can be useful tools for evaluating habitat, especially under marginal conditions, and for predicting the impact of altered water management practices.
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Hüsers, Jens, Moritz Esdar, Maria Kuhlmann, Kaija Saranto, Vesa Jormanainen, and Ursula Hübner. "Bass Models for EHR, RIS and PACS Diffusion in Finland and Germany." In Studies in Health Technology and Informatics. IOS Press, 2021. http://dx.doi.org/10.3233/shti210240.

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Building on Rogers’ Diffusion of Innovation Theory, Bass models describe the diffusion processes distinguishing between innovation (p) and imitation (q). This study aimed at modelling the uptake of RIS, PACS and EHR systems in Germany and Finland. The Bass models revealed a quick and almost identical uptake process across all three systems for Finland. In contrast, the Bass models mirrored a slower uptake in Germany. Consequently, the Finnish “imitation” coefficients were larger than the German ones. While in Germany almost free market forces were driving the adoption through imitation but without tail wind from policy, the adoption process in Finland was centrally governed. This suggests that the diffusion process in Finland reflected a well-managed roll-out of the systems rather than imitation behaviour. Thus, in order for Bass model coefficients to be understood properly, additional contextual information is required.
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Conference papers on the topic "Basso model"

1

Chang, Liu, Gao Chang-Chun, Liu Hai-Feng, and Huang Jin. "Study on Fashion Industry Value-Added Mode Based on Bass Diffusion Model." In 2014 7th International Conference on Intelligent Computation Technology and Automation (ICICTA). IEEE, 2014. http://dx.doi.org/10.1109/icicta.2014.169.

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Radojicic, Valentina Dz, and Goran Z. Markovic. "New technology forecasting using the bass model." In TELSIKS 2009 - 2009 9th International Conference on Telecommunications in Modern Satellite, Cable, and Broadcasting Services. IEEE, 2009. http://dx.doi.org/10.1109/telsks.2009.5339534.

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Zhenlin Wei, Yue Wu, and Ailing Huang. "EV maket expansion based on BASS model." In 5th Advanced Forum on Transportation of China (AFTC 2009). IET, 2009. http://dx.doi.org/10.1049/cp.2009.1621.

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Wang, Aifeng, and Hui Hao. "E-commerce Research with Bass Product Diffusion Model." In 2010 International Conference on E-Business and E-Government (ICEE). IEEE, 2010. http://dx.doi.org/10.1109/icee.2010.564.

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Kim, Do-Hoi, Young-Geun Shin, Sang-Sung Park, Dong-Sik Jang, George Maroulis, and Theodore E. Simos. "Forecasting Diffusion of Technology by using Bass Model." In COMPUTATIONAL METHODS IN SCIENCE AND ENGINEERING: Advances in Computational Science: Lectures presented at the International Conference on Computational Methods in Sciences and Engineering 2008 (ICCMSE 2008). AIP, 2009. http://dx.doi.org/10.1063/1.3225258.

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Agrawal, Shipra, Steven Yin, and Assaf Zeevi. "Dynamic Pricing and Learning under the Bass Model." In EC '21: The 22nd ACM Conference on Economics and Computation. New York, NY, USA: ACM, 2021. http://dx.doi.org/10.1145/3465456.3467546.

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BAI, Jinling. "User Growth Model of Pinduoduo Based on SIR and Bass Model." In 2021 International Conference on Enterprise Management and Economic Development (ICEMED 2021). Paris, France: Atlantis Press, 2021. http://dx.doi.org/10.2991/aebmr.k.210601.081.

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Ma, Guoqiang, Yunchen Tian, and Chongwen Li. "A Grouth Model By Comoputer Simulated About California Bass." In 2019 6th International Conference on Information Science and Control Engineering (ICISCE). IEEE, 2019. http://dx.doi.org/10.1109/icisce48695.2019.00019.

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Elayan, Elamari, Fouad Giri, Eric Pigeon, and Jean-Francois Massieu. "Model identification of 17h Ozone concentration over the Basse-Normandie region." In 2006 3rd International IEEE Conference Intelligent Systems. IEEE, 2006. http://dx.doi.org/10.1109/is.2006.348420.

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Yoon, Youngkoo, Sabrina Patino, Nathaniel Jarpa, and Hamad Alanazi. "WiMAX: Forecasting by integrating scenario planning and Bass model methodologies." In Technology. IEEE, 2009. http://dx.doi.org/10.1109/picmet.2009.5261828.

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Reports on the topic "Basso model"

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Pedersen, Gjertrud. Symphonies Reframed. Norges Musikkhøgskole, August 2018. http://dx.doi.org/10.22501/nmh-ar.481294.

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Symphonies Reframed recreates symphonies as chamber music. The project aims to capture the features that are unique for chamber music, at the juncture between the “soloistic small” and the “orchestral large”. A new ensemble model, the “triharmonic ensemble” with 7-9 musicians, has been created to serve this purpose. By choosing this size range, we are looking to facilitate group interplay without the need of a conductor. We also want to facilitate a richness of sound colours by involving piano, strings and winds. The exact combination of instruments is chosen in accordance with the features of the original score. The ensemble setup may take two forms: nonet with piano, wind quartet and string quartet (with double bass) or septet with piano, wind trio and string trio. As a group, these instruments have a rich tonal range with continuous and partly overlapping registers. This paper will illuminate three core questions: What artistic features emerge when changing from large orchestral structures to mid-sized chamber groups? How do the performers reflect on their musical roles in the chamber ensemble? What educational value might the reframing unfold? Since its inception in 2014, the project has evolved to include works with vocal, choral and soloistic parts, as well as sonata literature. Ensembles of students and professors have rehearsed, interpreted and performed our transcriptions of works by Brahms, Schumann and Mozart. We have also carried out interviews and critical discussions with the students, on their experiences of the concrete projects and on their reflections on own learning processes in general. Chamber ensembles and orchestras are exponents of different original repertoire. The difference in artistic output thus hinges upon both ensemble structure and the composition at hand. Symphonies Reframed seeks to enable an assessment of the qualities that are specific to the performing corpus and not beholden to any particular piece of music. Our transcriptions have enabled comparisons and reflections, using original compositions as a reference point. Some of our ensemble musicians have had first-hand experience with performing the original works as well. Others have encountered the works for the first time through our productions. This has enabled a multi-angled approach to the three central themes of our research. This text is produced in 2018.
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