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Open-source sensors system for doing simple physics experiments 用于进行简单物理实验的开源传感器系统
IF 0.9
Papers in Physics Pub Date : 2018-07-04 DOI: 10.4279/PIP.100004
Manuel Angel González Delagado, César Llamas Bello, Jesús Vegas, M. A. G. Rebollo
{"title":"Open-source sensors system for doing simple physics experiments","authors":"Manuel Angel González Delagado, César Llamas Bello, Jesús Vegas, M. A. G. Rebollo","doi":"10.4279/PIP.100004","DOIUrl":"https://doi.org/10.4279/PIP.100004","url":null,"abstract":"An open-source platform to be used in high school or university  laboratories has been developed. The platform permits  the performance of dynamics experiments in a simple and affordable  way, combining measurements of different sensors in the  platform. The sensors are controlled by an Arduino microcontroller, which can  be wirelessly accessed with smartphones or tablets.  The platform constitutes an economical sensing alternative to commercial  configurations and can easily be extended by including new sensors that broaden the range of covered experiments. Received: 7 September 2017,  Accepted: 1 March 2018;  Edited by: A. Marti,  M. Monteiro; Reviewed by: E. Arribas, Universidad de Castilla La Mancha, Albacete, Spain;  DOI: http://dx.doi.org/10.4279/PIP.100004 Cite as: C LLamas, Jesus Vega,  M A Gonzalez, M A Gonzalez, Papers in Physics 10, 100004 (2018) This paper, by  C Llamas, Jesus Vegas, M A Gonzalez, M A Gonzalez , is licensed under the  Creative Commons Attribution License 4.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"10 1","pages":"100004-100007"},"PeriodicalIF":0.9,"publicationDate":"2018-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49633641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Smartphone audio port data collection cookbook 智能手机音频端口数据采集食谱
IF 0.9
Papers in Physics Pub Date : 2018-06-06 DOI: 10.4279/PIP.100006
K. Forinash, R. Wisman
{"title":"Smartphone audio port data collection cookbook","authors":"K. Forinash, R. Wisman","doi":"10.4279/PIP.100006","DOIUrl":"https://doi.org/10.4279/PIP.100006","url":null,"abstract":"The audio port of a smartphone is designed to send and receive audio but can be harnessed for portable, economical, and accurate data collection from a variety of sources. While smartphones have internal sensors to measure a number of physical phenomena such as acceleration, magnetism and illumination levels, measurement of other phenomena such as voltage, external temperature, or accurate timing of moving objects are excluded. The audio port cannot be only employed to sense external phenomena. It has the additional advantage of timing precision; because audio is recorded or played at a controlled rate separated from other smartphone activities, timings based on audio can be highly accurate. The following outlines unpublished details of the audio port technical elements for data collection, a general data collection recipe and an example timing application for Android devices. Received: 5 January 2018,  Accepted: 20 April 2018;  Edited by: A. Marti,  M. Monteiro; Reviewed by: P. Jeanjacquot, Ecole Normale Superieure de Lyon – Institut Francais de lEducation, France;  DOI: http://dx.doi.org/10.4279/PIP.100006 Cite as: K Forinash, R Wisman,  Papers in Physics 10, 100006 (2018) This paper, by  K Forinash, R Wisman , is licensed under the  Creative Commons Attribution License 4.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":" ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2018-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49062460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Smartphones on the air track. Examples and difficulties 空中轨道上的智能手机。例子和困难
IF 0.9
Papers in Physics Pub Date : 2018-06-06 DOI: 10.4279/PIP.100005
M. Delgado, Alfonso Gómez, M. A. G. Rebollo
{"title":"Smartphones on the air track. Examples and difficulties","authors":"M. Delgado, Alfonso Gómez, M. A. G. Rebollo","doi":"10.4279/PIP.100005","DOIUrl":"https://doi.org/10.4279/PIP.100005","url":null,"abstract":"In this paper we describe a classical experiment with an air track in which smartphones are used as experimental devices to obtain physical data. The proposed experiment allows users to easily observe and measure relationships between physical magnitudes, conservation of momentum in collisions and friction effects on movement by utilizing the users' own mobile devices. Received: 20 September 2017,  Accepted: 4 May 2018;  Edited by: A. Marti,  M. Monteiro; Reviewed by: J-L Richter, Lycee Polyvalent J-B Schwilgue, France; DOI: http://dx.doi.org/10.4279/PIP.100005 Cite as: M A Gonzalez, A Gomez, M A Gonzalez, Papers in Physics 10, 100005 (2018) This paper, by  M A Gonzalez, A Gomez, M A Gonzalez , is licensed under the  Creative Commons Attribution License 4.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"1 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2018-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71010979","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Commentary on "Modeling temperature manipulation in a circular model of birdsong production" “鸟鸣产生圆形模型中的温度操纵建模”评述
IF 0.9
Papers in Physics Pub Date : 2018-01-19 DOI: 10.4279/PIP.100003
Yisi S. Zhang
{"title":"Commentary on \"Modeling temperature manipulation in a circular model of birdsong production\"","authors":"Yisi S. Zhang","doi":"10.4279/PIP.100003","DOIUrl":"https://doi.org/10.4279/PIP.100003","url":null,"abstract":"A Commentary on the paper by G. C. Dima et al.  [Pap. Phys. 10, 100002 (2018)]. Received: 8 January 2018,  Accepted: 11 January 2018;  Edited by: A. Marti;  DOI: http://dx.doi.org/10.4279/PIP.100003 Cite as: Y S Zhang, Papers in Physics 10, 100003 (2018) This paper, by  Y S Zhang , is licensed under the  Creative Commons Attribution License 4.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"10 1","pages":"100003-100003"},"PeriodicalIF":0.9,"publicationDate":"2018-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45375730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling temperature manipulations in a circular model of birdsong production 在鸟鸣生产的圆形模型中模拟温度操纵
IF 0.9
Papers in Physics Pub Date : 2018-01-19 DOI: 10.4279/PIP.100002
G. C. Dima, M. Goldin, G. Mindlin
{"title":"Modeling temperature manipulations in a circular model of birdsong production","authors":"G. C. Dima, M. Goldin, G. Mindlin","doi":"10.4279/PIP.100002","DOIUrl":"https://doi.org/10.4279/PIP.100002","url":null,"abstract":"The nature of the neural mechanisms in the birdsong motor pathway that lead to the generation of respiratory patterns are a matter of extensive debate. In a top-down control paradigm, vocal gestures emerge from a unique timescale ruled by the telencephalic nucleus HVC, which engages other brain regions downstream. Another possibility is that the generation of motor instructions is distributed throughout the neural network, flowing both upstream and downstream. In this circular architecture, the song results from the integration of more than one timescale. In order to disambiguate these views, we used local focal cooling of HVC in canaries to manipulate the timescale present there. Within the frame of the circular model, we fitted the experimental pressure patterns of different types of syllables, which form a full song. We show that at least two separate timescales must be taken into account to reproduce them, one which is manipulated by cooling while the other remains unchanged. The modifications -stretching and breaking- of the syllables were quantitatively reproduced in this frame. Received: 8 September 2017,  Accepted: 7 December 2017;  Edited by: A. Marti; Reviewed by: Y. S. Zhang, Princeton Neuroscience Institute, Princeton, NJ, USA.;  DOI: http://dx.doi.org/10.4279/PIP.100002 Cite as: G C Dima, M A Goldin, G B Mindlin, Papers in Physics 10, 100002 (2018) This paper, by  G C Dima, M A Goldin, G B Mindlin , is licensed under the  Creative Commons Attribution License 4.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"10 1","pages":"100002-100002"},"PeriodicalIF":0.9,"publicationDate":"2018-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41504085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Dilute antiferromagnetism in magnetically doped phosphorene 磁掺杂磷烯的稀反铁磁性
IF 0.9
Papers in Physics Pub Date : 2017-12-31 DOI: 10.4279/PIP.090008
A. Allerdt, A. Feiguin
{"title":"Dilute antiferromagnetism in magnetically doped phosphorene","authors":"A. Allerdt, A. Feiguin","doi":"10.4279/PIP.090008","DOIUrl":"https://doi.org/10.4279/PIP.090008","url":null,"abstract":"We study the competition between Kondo physics and indirect exchange on monolayer black phos-phorous using a realistic description of the band structure in combination with the density matrixrenormalization group (DMRG) method. The Hamiltonian is reduced to a one-dimensional problemvia an exact canonical transformation that makes it amenable to DMRG calculations, yielding exactresults that fully incorporate the many-body physics. We find that a perturbative description of theproblem is not appropriate and cannot account for the slow decay of the correlations and the completelack of ferromagnetism. In addition, at some particular distances, the impurities decouple formingtheir own independent Kondo states. This can be predicted from the nodes of the Lindhard function.Our results indicate a possible route toward realizing dilute anti-ferromagnetism in phosphorene. Received: 19 September 2017,  Accepted: 12 October 2017;  Edited by: K. Hallberg;  DOI: http://dx.doi.org/10.4279/PIP.090008 Cite as: A Allerdt, A E Feiguin, Papers in Physics 9, 090008 (2017) This paper, by A Allerdt, A E Feiguin , is licensed under the Creative Commons Attribution License 3.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"9 1","pages":"090008-090008"},"PeriodicalIF":0.9,"publicationDate":"2017-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42851161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
An improvement to the measurement of Dalitz plot parameters 对达利茨图参数测量方法的改进
IF 0.9
Papers in Physics Pub Date : 2017-12-31 DOI: 10.4279/PIP.090009
S. Ghosh, A. Roy
{"title":"An improvement to the measurement of Dalitz plot parameters","authors":"S. Ghosh, A. Roy","doi":"10.4279/PIP.090009","DOIUrl":"https://doi.org/10.4279/PIP.090009","url":null,"abstract":"Precise measurement of the Dalitz plot parameters of the decay gives a better insight of the dynamics of the heavy pseudo-scalar meson. Various measurements of the Dalitz plot parameters of the meson have been performed with the detection of all the final state particles  including the neutral decay of 2 . In many experiments, reconstruction of the meson from the neutral decay modes comes with the disadvantage of poor resolution and low efficiency compared to that of the charged particles. In this article, a study of the Dalitz plot parameters keeping the meson as a missing particle is presented. The method is found to be advantageous in the case of poor photon resolution. Effect of the charged particle resolution on the Dalitz variable Y is also examined. This work may provide guidance to select a suitable method for the Dalitz plot analysis, depending on the detector resolution. Received: 27 June 2017,  Accepted: 9 October 2017;  Edited by: D. Restrepo;  DOI: http://dx.doi.org/10.4279/PIP.090009 Cite as: S Ghosh, A Roy, Papers in Physics 9, 090009 (2017) This paper, by S Ghosh, A Roy , is licensed under the Creative Commons Attribution License 3.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"9 1","pages":"090009-090009"},"PeriodicalIF":0.9,"publicationDate":"2017-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43637110","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of multifractal analysis to segmentation of water bodies in optical satellite images 多重分形分析在光学卫星图像水体分割中的应用
IF 0.9
Papers in Physics Pub Date : 2017-11-15 DOI: 10.4279/PIP.090007
V. Martin, A. Figliola
{"title":"Application of multifractal analysis to segmentation of water bodies in optical satellite images","authors":"V. Martin, A. Figliola","doi":"10.4279/PIP.090007","DOIUrl":"https://doi.org/10.4279/PIP.090007","url":null,"abstract":"In this paper we study the characteristics of multifractal spectra obtained for remote sensing images through the coarse theory and proposed a method for segmentation of water bodies based on it. In first place, spectra of self-similar images created with Iterated Function Systems are calculated and compared with their statistical spectra. Then, optical remote sensing images are studied, emphasizing the differences between their spectra and those obtained for synthetic images. Punctually, attention is focused on the concavity of real image spectra and on its interpretation in terms of the analyzed images. This lead us to the proposition of a segmentation method for water bodies. The method is tested and the results are compared with water masks of the regions under study. Comments are made about the limitations of the proposed method. Received: 29 May 2017,  Accepted: 20 September 2017;  Edited by: C. Muravchik;  DOI: http://dx.doi.org/10.4279/PIP.090007 Cite as: V M San Martin, A Figliola, Papers in Physics 9, 090007 (2017) This paper, by  V M San Martin, A Figliola , is licensed under the  Creative Commons Attribution License 3.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"9 1","pages":"090007-090007"},"PeriodicalIF":0.9,"publicationDate":"2017-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44877651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Pattern formation mechanisms in sphere-forming diblock copolymer thin films 球形双嵌段共聚物薄膜的图案形成机制
IF 0.9
Papers in Physics Pub Date : 2017-08-25 DOI: 10.4279/PIP.100001
Leopoldo R. G'omez, N. Garc'ia, R. Register, D. A. Vega
{"title":"Pattern formation mechanisms in sphere-forming diblock copolymer thin films","authors":"Leopoldo R. G'omez, N. Garc'ia, R. Register, D. A. Vega","doi":"10.4279/PIP.100001","DOIUrl":"https://doi.org/10.4279/PIP.100001","url":null,"abstract":"The order-disorder transition of a sphere-forming block copolymer thin film was numerically studied through a Cahn-Hilliard model. Simulations show that the fundamental mechanisms of pattern formation are spinodal decomposition and nucleation and growth. The range of validity of each relaxation process is controlled by the spinodal and order-disorder temperatures. The initial stages of spinodal decomposition are well approximated by a linear analysis of the evolution equation of the system. In the metastable region, the critical size for nucleation diverges upon approaching the order--disorder transition, and reduces to the size of a single domain as the spinodal is approached. Grain boundaries and topological defects inhibit the formation of superheated phases above the order--disorder temperature. The numerical results are in good qualitative agreement with experimental data on sphere-forming diblock copolymer thin films. Received: 22  August 2017,  Accepted: 12 December 2017;  Edited by: R. Dickman; Reviewed by: A. Peters, Dept. Chemical Engineering, Louisiana Tech Univ., Ruston, USA;  DOI: http://dx.doi.org/10.4279/PIP.100001 Cite as: L R Gomez, N A Garcia, R A Register, D A Vega, Papers in Physics 10, 100001 (2018) This paper, by  L R Gomez, N A Garcia, R A Register, D A Vega , is licensed under the  Creative Commons Attribution License 4.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"10 1","pages":"100001-100001"},"PeriodicalIF":0.9,"publicationDate":"2017-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44424052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Photoionization of water molecules by high energy photons 高能量光子对水分子的光离作用
IF 0.9
Papers in Physics Pub Date : 2017-08-17 DOI: 10.4279/PIP.090006
L. Martini, D. Boll, O. Fojón
{"title":"Photoionization of water molecules by high energy photons","authors":"L. Martini, D. Boll, O. Fojón","doi":"10.4279/PIP.090006","DOIUrl":"https://doi.org/10.4279/PIP.090006","url":null,"abstract":"We theoretically study the photoionization of water molecules by high energy photon impact. We develop a model in which the final state wavefunction is given by a Coulomb continuum wavefunction with effective charges and the water molecule bound states are represented using the Moccia's monocentric wavefunctions. We obtain analytical expressions for the transition matrix element that enable the computation of cross sections by numerical quadratures.  We compare our predictions for photon energies between 20 and 300 eV with more elaborated theoretical results and experiments. We obtain a very good agreement with experiments, in particular, at enough high energies where there is a lack of elaborated results due to their high computational cost. Received: 15 March 2017,  Accepted: 25 June 2017;  Edited by: S. Kais;  DOI: http://dx.doi.org/10.4279/PIP.090006 Cite as: L Martini, D I R Boll, O A Fojon, Papers in Physics 9, 090006 (2017) This paper, by L Martini, D I R Boll, O A Fojon , is licensed under the Creative Commons Attribution License 3.0 .","PeriodicalId":19791,"journal":{"name":"Papers in Physics","volume":"9 1","pages":"090006-090006"},"PeriodicalIF":0.9,"publicationDate":"2017-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42553878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
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