https://opacj.org/rise/issue/feedResearch Input in Student Experiments2023-11-08T08:11:53+00:00Cosmin SaboCosmin.SABO@mi.utcluj.roOpen Journal Systemshttps://opacj.org/rise/article/view/192Clean City2023-11-07T10:00:40+00:00Alexandru SABOxansabo@gmail.comDragoș POPpop.dnv@gmail.comMatei TĂNASEtanasemateicri@gmail.comDavid DURTEAdurteadavid@gmail.comLaura TEȘILEANUlotesileanu@yahoo.com<p><em>"Clean City" is a project that aims to help automate waste collection systems and change the way we think about the cleanliness of our communities. The system operates as follows: a mobile station that travels around a predefined perimeter and collects waste using LiDAR and Radar sensors to detect objects and to process the information they provide using YOLOv4 software running on a Nvidia Jetson microcomputer. After filling up, it heads to a fixed station that sorts the various types of waste into the categories mandated by the European Union. Sorting takes place using NIR sensors and Artificial Intelligence.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/191Speed Reading Trainer2023-11-07T08:36:52+00:00Alexandru MĂRCUȘalex.marcus9526@gmail.comMatei NAȘCUmtnscu@gmail.com<p><em>"Speed Reading Trainer" is an app meant for learning the simple concepts of speed-reading and for practising reading at high speeds.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/193Cryptocurrency – are they the future of money?2023-11-07T11:08:45+00:00Sergiu-Marian COSTINAȘsergiucostinas4@gmail.comRaul-Andrei DUNCArraul.ddunca@gmail.com<p><em>Cryptocurrency has been the talk in the financial world for the past several years. It has recently taken up a lot of media space, while some countries try to prohibit crypto, others allow crypto for common needs. Some people believe cryptocurrency is a fad, and some believe cryptocurrency is the future. Yet, we think the reality lies somewhere in between.</em></p> <p><em>In this article we presented, based on our experience, the world of Cryptocurrency, what they are, if they really are an investment considering the volatility of the market and how you can make “Crypto”.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/194Chess as a spiritual exercise or existential salvation2023-11-07T12:01:33+00:00Mihai GRIGORmihaigrigor2005@gmail.comOtilia Róza BOGDANotiliabogdan1@gmail.comMaria-Carina ȘTIOPEIstiopeicarinamari@gmail.com<p><em>The project aims to follow how chess- one of the most beautiful sports invented by human- becomes a literary motif between three illustrative books, written by three artists from different eras and countries: Mihail Sadoveanu, Herta Müller and Walter Tevis.</em></p> <p><em>Mihail Sadoveanu, considered the third great storyteller of Romanian literature, presents in "Aventurile șahului" how this game gives us solutions to the great existential problems.</em></p> <p><em>Nobel laureate, Herta Müller, proposes a symbolic interpretation of the chess pieces in "Regele se-nclină și ucide".</em></p> <p><em>Walter Tevis wins his readers with a mythic book about salvation through the passion for chess, namely "The Queen's Gambit". </em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/195Alternative energy sources - Fuel cell2023-11-07T12:53:07+00:00Vasile ANDERCĂUvasile.andercau@lucaciu.roGeorgiana MAGHEARgeorgiana.maghear@lucaciu.roAnamaria OANEAanamaria.oanea@lucaciu.ro<p><em>In the context of the human need for energy and the gradual consumption of fuel reserves, finding alternative energy sources is becoming a global challenge. It is estimated that oil and natural gas will run out in approximately 50 years, and coal in approximately 200 years. We studied several alternative energy sources and presented their utility. For instance, the fuel cell uses the principle of reversing the electrolysis reaction and the continuous conversion of the chemical energy of a fuel into electrical energy.</em></p>2023-11-07T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/196Acoustic intensity2023-11-07T13:28:55+00:00Paul MUREȘANmuresan.paul@cjexmm.ro<p><em>The research paper has <strong>the effects of sound wave intensity on human health</strong> as object of study. Sound has four characteristics, of which one is its intensity. We experimentally demonstrated by measuring perceived sound intensity and actual sound intensity level that the two do not determine a linear difference. Above a certain sound intensity threshold, sound can have unwanted effects on the body. With the help of a specific measuring instrument, we studied the noise level to which students and teachers in an educational unit are exposed.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/197Herta Müller2023-11-07T15:04:59+00:00Ștefania PECEstefania.pece@gmail.com<p>-</p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/199Familien früher und heute. Die Buddenbrooks2023-11-07T15:24:08+00:00Alexandru LUPȘEserban.lupse@gmail.com<p>-</p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/200Interesting uses of trigonometric inequalities2023-11-07T15:36:22+00:00Antonia COSARcosarantoniamaria@gmail.com<p><span class="fontstyle0">A wise saying tells us that we ought to love our enemies despite the sorrow they’ve put us through. Thus, I chose to give trigonometry one more chance and I ended up being introduced to a whole other side of it, which helped me understand it at a much deeper level.</span></p> <p><span class="fontstyle0">Through trigonometry, we are able to create unexpected bridges between algebra and geometry, fact that gives a rather unique magic to it.</span> </p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/198The dance of the pendulums2023-11-07T14:51:14+00:00Dragoș-Cristian POPdragos.pop@lucaciu.roPaul Ștefan TIBAtibastefan33@gmail.com<p><em>Our work presents the study of the gravitational pendulum and the laws that govern the oscillations of the gravitational pendulum. For this purpose, we built a device that highlights in a unique way the period of oscillation of the pendulum depending on its length. The device is made up of 15 gravitational pendulums, ordered in increasing order according to the length of the wires, suspended by means of inextensible wires of negligible mass, whose lengths vary from one wire to another. The wires were chosen of different lengths to give each pendulum a different period, so that once released from a certain angle, not being coupled, they begin to oscillate, forming the image of a wave.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/201Submerged in crimes2023-11-07T15:55:03+00:00Mira ORZAorzamira21@gmail.comAlissa TĂUTtautalissamaria@gmail.comVanessa RUSNEACrusneacvanessa@gmail.com<p><em>Both murder and suicide have shattered from ground up the human society for thousands of years. Most real life murders have a motivation which is closely connected to money, passions or revenge. </em></p> <p><em>In literature, murders or suicide have the role to generate a powerful emotion to the reader by creating, at the same time, the illusion of life.</em></p> <p><em>A great part of the murders from real life remain unpunished. In most cases of murder in literature, the wrong-doers remain, as well, not discovered out of recklessness or ignorance, with the exception of the murderers from the novel „Baltagul”.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/202The power function in Group Theory2023-11-08T06:13:30+00:00Robert ROGOZSANrobertrogozsan@gmail.comGheorghe BOROICAghitaboroica64@gmail.com<p><span class="fontstyle0">In this article we will present some special properties and applications regarding the power function over a group. First we will give an equivalent condition for the power function to be a bijection over a group G, then we will present some problems which can easily be solved by using the properties we will prove at the beginning of the paper.</span> </p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/203The Great Union2023-11-08T06:53:16+00:00Patricia POPpatricia.pop2018@gmail.com<p><em>The Great Union is the beginning of the modern and democratic Romanian state. Thanks to the events of the century after the Great Union, Romanians learned to be united and strong together, no matter what. </em></p> <p><em>Historical events have left their mark on society and also on their thinking.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/204Lexikalische Entlehnungen und die Kommunikation früher und heute2023-11-08T07:22:23+00:00Anna FERENȚanna.ferent@lucaciu.ro<p>-</p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/205Magazines – the culture of America in the 20th century2023-11-08T07:42:23+00:00Iustina Gabriela DANCIholidayonpluto@gmail.com<p><em>The variety of magazines' amusement, information, and ideas was one of the 20th century's most peculiar aspects. The organizational framework of the magazine industry enabled new publications to appear as freely as they had in the first 55 years of the century. Magazines as a whole reflected a varied range of preferences and perspectives due to the fact that they catered to particular audiences within the general community creating a culture within the general collective.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experimentshttps://opacj.org/rise/article/view/206Tentația dansului sau Fațetele bucuriei2023-11-08T08:11:53+00:00Raluca Mariana CODREAralucodrea12334@gmail.comAlina Teodora COMANcomanalina53@gmail.comRaluca Izabela NYIKORAralucanyikora11@gmail.com<p><em>Dance is an artistic means of expressing a message. At the beginning of the 20th century, writers begin to write novels in which the art of dance predominates. In "Morometii" by Marin Preda, the dance is highlighted by the "Dansul Calusului". The tradition is observed in the novel "Ion" by Liviu Rebreanu through traditional weddings. In "Ciuleandra" by Liviu Rebreanu, the choir is present. The waltz is an art that consists of feelings. In,, Waltz Invitation" by Mihail Drumes and "Last Night of Love, First Night of War" by Camil Petrescu, the waltz is present.</em></p>2022-12-16T00:00:00+00:00Copyright (c) 2023 Research Input in Student Experiments