Physics & Astronomy International Journal最新文献_第3页

The smallest constant of physics 物理学中最小的常数

Physics & Astronomy International Journal Pub Date : 2023-04-26 DOI: 10.15406/paij.2023.07.00291

Shuming Li, Lihua Li Huang, Shuwei Li, Shuyun Li

引用次数: 2

The coleman-weinberg potential and its application to the hierarchy problems coleman-weinberg势及其在层次问题中的应用

Physics & Astronomy International Journal Pub Date : 2023-04-26 DOI: 10.15406/paij.2023.07.00292

Likolo Anabiwa George, Manyika Kabuswa Davy

引用次数: 3

The danger of ball lightning 球状闪电的危险

Physics & Astronomy International Journal Pub Date : 2023-04-24 DOI: 10.15406/paij.2023.07.00290

Anatoly I. Nikitin

{"title":"The danger of ball lightning","authors":"Anatoly I. Nikitin","doi":"10.15406/paij.2023.07.00290","DOIUrl":"https://doi.org/10.15406/paij.2023.07.00290","url":null,"abstract":"Ball lightning in close contact with living beings can strike them with electric current or high-frequency radio emission. The current, passing through the surface of the skin, can cause it to burn. The entry of current into the region of the heart or the respiratory center of the brain can lead to death. High-frequency radio emission from ball lightning occurs in the wavelength range of 1-10 cm and can be absorbed by liquid water. When ball lightning comes into close contact with the body, blood heating and muscle rupture can occur. Cases of the indicated action of ball lightning on people are given. It is shown that the charge of ball lightning can be kept in a shell consisting of polarized water molecules. The reason for the generation of electromagnetic radiation of ball lightning is the cyclic movement of electrons in closed orbits. The radiation power sharply increases when the uniform distribution of electrons along the orbit is violated. It had been proven that dashed traces that appear on photographic films during electrical discharges in water are created by the action of multiply charged clusters having the structure of ball lightning. These clusters can penetrate the skin into living organisms and remain in them for a long time. The biological effect of these clusters has not yet been studied, but there is evidence that they are hazardous to health (causing cancer and liver damage).","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131333750","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

On the relation between coronal hole latitude range and the speed of the solar wind at Earth’s bowshock 日冕洞纬度范围与地球弓形震波处太阳风速度的关系

Physics & Astronomy International Journal Pub Date : 2023-04-21 DOI: 10.15406/paij.2023.07.00289

M. J. Birch, B. Bromage

引用次数: 0

Preparation of epitaxial BiFeO3 thin films on Si(001) substrates by pulsed electron deposition 脉冲电子沉积法在Si(001)衬底上制备BiFeO3外延薄膜

Physics & Astronomy International Journal Pub Date : 2023-04-03 DOI: 10.15406/paij.202307.00288

Renan M C Ávila, Roney C da Silva, Rogério J Prado

引用次数: 0

The cosmic big-bang: how could mankind escape from it? 宇宙大爆炸:人类如何逃脱?

Physics & Astronomy International Journal Pub Date : 2023-03-29 DOI: 10.15406/paij.2023.07.00287

Hans J Fahr

引用次数: 1

Automatic vehicle number plate recognition system 自动车牌识别系统

Physics & Astronomy International Journal Pub Date : 2023-03-28 DOI: 10.15406/paij.2023.07.00286

Manyika Kabuswa Davy, P. J. Banda, Agripa Hamweendo

{"title":"Automatic vehicle number plate recognition system","authors":"Manyika Kabuswa Davy, P. J. Banda, Agripa Hamweendo","doi":"10.15406/paij.2023.07.00286","DOIUrl":"https://doi.org/10.15406/paij.2023.07.00286","url":null,"abstract":"In simple terms, Automatic Vehicle Number Plate Recognition System (AVNPRS) can be described as a computer vision image processing technology. This technology captures images of vehicles and recognizes their number plates. As the world is becoming more sophisticated on each new day, security as well as management of transportation system have become a vital aspect in controlled places. Such places include modern campuses, shopping malls and other institutions. With today’s rate at which motor vehicles are increasing in numbers, there is need for an effective, affordable and efficient AVNPRS. Thus, this project proposes, outlines and discusses an efficient AVNPRS. The system under consideration in this project can be installed at main entrances of modern institutions. This is because the AVNPRS ensures that only authorized vehicles can automatically have access to such institutions. The AVNPRS ensures that it captures the image of the number plate once the input sensor detects the vehicle. The Sobel edge detection and Laplacian edge detection techniques are used at this critical stage. Thereafter, the Bounding box technique is used to find the number plate leading to character segmentation. After capturing, an image undergoes extraction and character investigation via the Optical Character Recognition (OCR). In addition, in achieving character recognition, matching between the computer template and segmented image is done via the OCR method. It is vital to mention that this system is sustainable as it successfully detects, recognizes and processes vehicle number plates on real images. The AVNPRS can be used for both traffic control and security. Therefore, the main aim of this piece of writing is to develop from a theoretical perspective an AVNPR system that can detect and capture vehicle number plate images.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121098100","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

The oscillatory effect of chemical constituents, dynamics, barometric, and thermodynamics on weather over Accra, and Bissau 化学成分、动力学、气压和热力学对阿克拉和比绍天气的振荡效应

Physics & Astronomy International Journal Pub Date : 2023-03-23 DOI: 10.15406/paij.2023.07.00285

M. Padi

{"title":"The oscillatory effect of chemical constituents, dynamics, barometric, and thermodynamics on weather over Accra, and Bissau","authors":"M. Padi","doi":"10.15406/paij.2023.07.00285","DOIUrl":"https://doi.org/10.15406/paij.2023.07.00285","url":null,"abstract":"A sharp contrast in atmospheric weather conditions prevailed over Accra and Bissau and that led to the oscillatory nature of weather conditions between the two cities. During the latter part of July 2022, Bissau experienced persistent and continuous rains whilst Accra remained fair and dry. It was realized that when an air parcel rises, low-pressure system is created at the surface but when the air parcel sinks, high pressure forms. Pressures were predominantly high over Accra and low over Bissau during that time. Models from CAMS were used to study chemical compositions to determine the concentration and effect of Sulphur Dioxide (SO2) over the two cities. Wind behavior over various levels in the atmosphere was considered using model products from ECMWF, satellite imagery from EUMETSAT, and t-phi gram from the Air Resources Laboratory of NOAA to study the thermodynamics of the skies. METAR, hourly observations made by the National Meteorological Offices from the two cities were retrieved from the AADS and Ogimet to study the barometric nature during the period. Results show that the atmosphere over Bissau had been less polluted as compared to that of Accra which makes Bissau to be persistently cloudy. Atmospheric chemical constituents would have to compete for moisture if the concentration is high and does not support the sustenance of massive clouds capable of producing rain. It has been realized that the development of anticyclone, an anticlockwise circulation at the 200 hPa level contributed to the cloud sustenance over Bissau during that time.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114482012","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

How Saturn could create dense rings after the emergence of its magnetic field. The Tchernyi-Kapranov effect: mechanism of magnetic anisotropic accretion 土星如何在磁场出现后产生密集的环。Tchernyi-Kapranov效应:磁各向异性吸积机制

Physics & Astronomy International Journal Pub Date : 2023-03-14 DOI: 10.15406/paij.2023.07.00284

Tchernyi Vv, Kapranov Sv

{"title":"How Saturn could create dense rings after the emergence of its magnetic field. The Tchernyi-Kapranov effect: mechanism of magnetic anisotropic accretion","authors":"Tchernyi Vv, Kapranov Sv","doi":"10.15406/paij.2023.07.00284","DOIUrl":"https://doi.org/10.15406/paij.2023.07.00284","url":null,"abstract":"The origin of Saturn’s dense rings is still unclear. Here we propose a mechanism of the genesis of Saturn’s dense rings from ice particles (chunks) of the protoplanetary cloud. It shows how Saturn could create rings after the emergency of its magnetic field. We take into account the force of diamagnetic expulsion and the Tchernyi-Kapranov effect: the process of magnetic anisotropic accretion. The force of diamagnetic expulsion acts on the particles together with the gravitational and centrifugal force. As a result, the orbits of ice particles of different sizes move into the plane of magnetic equator, where their energy is minimal. Ultimately, every particle acquires its stable orbit in magnetic equator plane, and the net force prevents its radial and vertical shift. The process described here is likely to contribute to the genesis of a stable disk-shaped structure of dense rings, formation of sharp edges of rings and gaps, and separation of particles (chunks) in rings. Previous theories are not questioned here, but they are complemented with the magnetic interaction, which accounts for the Tchernyi-Kapranov effect: mechanism of magnetic anisotropic accretion of ice particles.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130624062","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

On the strategy of emphasizing disruptive computer-based approaches when teaching astronomy to promote related careers 论天文学教学中强调颠覆性计算机方法促进相关职业发展的策略

Physics & Astronomy International Journal Pub Date : 2023-03-06 DOI: 10.15406/paij.2023.07.00283

Luan O Barau´na, Reinaldo R Rosa

{"title":"On the strategy of emphasizing disruptive computer-based approaches when teaching astronomy to promote related careers","authors":"Luan O Barau´na, Reinaldo R Rosa","doi":"10.15406/paij.2023.07.00283","DOIUrl":"https://doi.org/10.15406/paij.2023.07.00283","url":null,"abstract":"The knowledge attained in the last decades in space physics, and in particular in Astronomy, has attracted, in part due to its associated computational innovation components, the attention of young students all over the world. Thus, both teaching and the scientific dissemination of knowledge in these areas should seek to guide, based on this interdisciplinary characteristic, talented young people towards related careers. By introducing Space Physics and Astronomy as data-driven sciences, and with a high dependence on computer simulation and disruptive technologies, we make the research and development activities associated with them even more attractive. In this article we highlight the program called Decolar Astronomia (DA), an initiative carried out in the city of S˜aoJos´e dos Campos, SP, Brazil. In the DA 2022 edition, eight activities were formulated with the aim of emphasizing the relevance of computational knowledge in space sciences with an emphasis on 21st century Astronomy. In addition to describing the activities that were applied under DA-2022, we present a more general strategy that can be applied by any other program. This strategy emphasizes computational aspects (such as data-driven science and disruptive technologies) related to Astronomy, in motivating teaching programs for young students. The expected result, after applying this strategy, is that the interest in Astronomy and related careers becomes even greater.","PeriodicalId":377724,"journal":{"name":"Physics & Astronomy International Journal","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129481663","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

Physics &amp; Astronomy International Journal最新文献

Physics & Astronomy International Journal最新文献