lunes, 20 de febrero de 2023

Putin, czar with no empire

 FOR  THE CEI S INTERPRETING STUDENTS 


SUBJECT  ASPECTOS DE LA REALIDAD SOCIAL CONTEMPORANEA

Putin, czar with no empire, needs military victory for his own survival

Russian President Vladimir Putin speaks during a celebration and concert on Red Square in Moscow on Sept. 30, 2022, after his declaration that Russia would annex four Ukrainian regions — a violation of international law. (For The Washington Post)

MOSCOW — President Vladimir Putin likes to portray himself as a new czar like Peter the Great or Ivan III, the 15th-century grand prince known as the “gatherer of the Russian lands.” But Putin’s year-long war in Ukraine has failed so far to secure the lands he aims to seize, and in Russia, there is fear that he is leading his nation into a dark period of strife and stagnation — or worse.

Some in the elite also say the Russian leader now desperately needs a military victory to ensure his own survival. “In Russia, loyalty does not exist,” one Russian billionaire said.

Putin’s full-scale invasion of Ukraine began with hubris and a zeal to reshape the world order. But even as he suffered repeated military defeats — diminishing his stature globally and staining him with allegations of atrocities being committed by his troops — Putin has tightened his authoritarian grip at home, using the war to destroy any opposition and to engineer a closed, paranoid society hostile to liberals, hipsters, LGBTQ people, and, especially, Western-style freedom and democracy.

The Russian president’s squadrons of cheerleaders swear he “simply cannot lose” in Ukraine, thanks to Russia’s vast energy wealth, nuclear weapons and sheer number of soldiers it can throw onto the battlefield. These supporters see Putin rising supreme from Ukraine’s ashes to lead a swaggering nation defined by its repudiation of the West — a bigger, more powerful version of Iran.

But business executives and state officials say Putin’s own position at the top could prove precarious as doubts over his tactics grow among the elite. For many of them, Putin’s gambit has unwound 30 years of progress made since the collapse of the Soviet Union. Putin’s vision of Russia horrifies many oligarchs and state officials, who confide that the war has been a catastrophic error that has failed in every goal. But they remain paralyzed, fearful and publicly silent.

“Among the elite, though they understand it was a mistake, they still fear to do anything themselves,” said the only Russian diplomat to publicly quit office over the war, Boris Bondarev, formerly based at Russia’s U.N. mission in Geneva. “Because they have gotten used to Putin deciding everything.”

Russian soldiers stand with Kalashnikov rifles during a parade celebrating the 80th anniversary of the Russian victory in the Battle of Stalingrad during World War II, in the central square of Volgograd, Russia, on Feb. 2. (For The Washington Post)

Some are sure that Putin can maintain his hold on power without a victory, as long as he keeps the war going and wears down Western resolve and weapons supplies. For anyone in the elite to act, Bondarev said, “there needs to be an understanding that Putin is leading the country to total collapse. While Putin is still bombing and attacking, people think the situation is not so bad. There needs to be a full military loss, and only then will people understand they need to do something.”

What all camps seem to agree on is that Putin shows no willingness to give up. As Russia’s battlefield position deteriorated in recent months, he escalated repeatedly, shuffling his commanders, unleashing brutal airstrikes on civilian infrastructure and threatening to use nuclear weapons.

Now, with his troops reinforced by conscripts and convicts and poised to launch new offensives, the 70-year-old Russian leader needs a win to maintain his own credibility. “Putin needs some success to demonstrate to society that he is still very successful,” a senior Ukrainian security official said, speaking on the condition of anonymity to discuss politically sensitive issues.

A tram in Volgograd, Russia, is branded with a Russian army advertisement on Feb. 1. (For The Washington Post)

Moscow’s glittering indifference

As the casualties mount in Ukraine, filling graveyards across Russia’s provinces, Moscow’s glittering facade conveys a hedonistic, indifferent city. Its restaurants and cafes are crammed with glamorous young patrons sporting European designer wear, taking selfies on the latest iPhones, and ordering truffle pizza or duck confit to be washed down with trendy cocktails.

But beneath, Putin is creating a militarized, nationalistic society, fed on propaganda and obsessed with an “existential” forever war against the United States and NATO. So far, no one in officialdom has had the nerve to object — not publicly, at least.

“Whatever he says, it’s taken like this,” the editor in chief of Nezavisimaya Gazeta, Konstantin Remchukov, said with a loud snap of his fingers.

Russians abandon wartime Russia in historic exodus

Since Putin rose to the presidency in 2000, his legitimacy has been based on his popularity and stature among the elite, buttressed by his ability to instill fear by stripping some of their assets and throwing others into prison. The defeats in Ukraine have dented him.

The president seems forever haunted by the moment when as a young KGB officer serving in Dresden, the Soviet Union “gave up its position in Europe” as the Berlin Wall collapsed. And his pursuit of the empire lost with the subsequent Soviet collapse is throwing his country back into a gray, repressive and isolated past. For Putin, his efforts are a quest to right what he has perceived as historical wrongs. In his near-maniacal revisionist view, Ukraine has always belonged to Russia.

But even if Putin somehow forces Ukraine into capitulating and ceding occupied territory, those in the elite who lean toward a more liberal society stand to lose the most. Punitive Western economic sanctions are likely to remain in place, and some oligarchs undoubtedly would be pressed to pay to rebuild Russia’s new lands. Some analysts predict a sweeping purge of oligarchs and others deemed insufficiently patriotic.

Flowers at a newly opened monument to the Soviet dictator Joseph Stalin on an embankment of the Volga River by the entrance to the Museum of the Battle of Stalingrad, in Volgograd, Russia, on Feb. 3. (For The Washington Post)

Already, there are shocking glimpses of Putin’s new Russia: A couple in a Krasnodar restaurant were arrested, handcuffed and forced to the floor after being denounced to the police by an eavesdropper who heard them quietly bemoaning the war.

An older woman on a bus was dragged from her seat, thrown to the floor and roughly pushed out the door by passengers because she called Russia an empire that sends men to fight in cheap rubber boots.

Videos purportedly show members of the Kremlin-approved but technically illegal mercenary Wagner Group executing “traitors” in beatings with a sledgehammer.

Former central bank official Alexandra Prokopenko described an atmosphere in which officials fear prison amid intimidation by the security services.

“It is a concern for every member of the Russian elite,” said Prokopenko, who is in exile in the West. “It’s a question of survival for high-ranked, mid-ranked officials who all remained in Russia. People are quite terrified about their safety now.” She said former colleagues still at the bank told her they saw “no good exit for Russia right now.”

A door to a working Soviet-era bunker that is considered a bomb shelter if Russia is attacked, at the House of Culture in the Voroshylovsky district of Volgograd, on Feb. 1. (For The Washington Post)

Two-pronged backlash

Increasingly isolated, Putin faces growing resentment from hawkish nationalists who say he should have acted more radically to seize Kyiv and from a liberal-leaning faction that thinks the war is a grave error. He has tightened his inner circle to a few hard-liners and sycophants, ruthlessly eliminated opposition rivals and set up a formidable security apparatus to safeguard against any threat.

Pro-Kremlin analysts see escalation — pumping in more soldiers and ramping up military production — as the path to victory. That appears to fit Putin’s character.

But no one really knows the current military goal or what Putin might consider a victory. Some say he will settle for seizing all of Ukraine’s eastern Donetsk and Luhansk regions, where Russia began fomenting separatist war in 2014. Others say he has not given up his designs on taking Kyiv and toppling the government.

In September, Ukraine’s first big successful counteroffensive shone a harsh spotlight on Putin’s instincts in a crisis: a bullish doubling-down designed to sever any path to compromise. His illegal claim to annex four Ukrainian territories, despite not controlling them militarily, was a burn-all-bridges tactic meant to draw sharp new red lines on the map of Ukraine.

His speech on the occasion of the supposed annexations, in the Grand Kremlin Palace’s St. George Hall, reached a new hysterical pitch over what he called the West’s “outright Satanism” and its desire to gobble Russia up and destroy its values.

“They do not want us to be free; they want us to be a colony,” he said. “They do not want equal cooperation; they want to loot. They do not want to see us a free society, but a mass of soulless slaves.” He has repeatedly described a quest to establish a multipolar world in which Russia regains its rightful place among the great powers.

Dutch probe implicates Putin in 2014 downing of Malaysian passenger jet

Sometimes, Putin sharply rebukes one of his officials about failures, leaving others fearful of public humiliation. He elevates and rewards thuggish figures, such as Chechen leader Ramzan Kadyrov and the Wagner founder, Yevgeniy Prigozhin, but swiftly curbs them if they step out of line.

At times, Putin seems oddly out of touch with the realities of his war. Days after pro-war bloggers reported last week that dozens of Russian tanks and many soldiers were lost in a failed attack on Vuhledar involving Russia’s elite 155th Guards Naval Infantry Brigade, Putin boasted to journalists that the “marine infantry is working as it should — right now — fighting heroically.”

Meanwhile, a profound pessimism has settled on the country. Those who believe the war is lost run the gamut from liberals to hard-liners. “It seems it is impossible to win a political or military victory,” one state official said, speaking on the condition of anonymity to offer a candid assessment. “The economy is under huge stress and can’t be long under such a situation.”

Patriotic death cult

Publicly, Putin has voiced no concern about Russia’s brutal killings of civilians in cities including Bucha, Mariupol and Izyum, while his propaganda machine dismisses news of such atrocities as “fakes.” The International Criminal Court is investigating war crimes in Ukraine, and the European Parliament has called for a special court on Russia’s crime of aggression, the invasion of Ukraine.

But pro-Kremlin analyst Sergei Markov said talk of war crimes prosecutions only stiffened Putin’s resolve.

“What will Putin’s response be? Fighting — and it doesn’t matter what the price will be,” Markov said.

Kremlin image makers convey Putin’s power in staged events where he looks the archetypal dictator — often a lone figure in the distance placing flowers at monuments to past military heroes. His staged appearances with purported ordinary Russians seem scripted and artificial, with participants simpering in nervous awe. The same faces keep appearing in different settings — dressed as soldiers, fishers or churchgoers, raising questions about how many real people the president ever meets.

As the war casualties pile up, Putin and top propagandists extol a fatalistic cult of death, arguing that it is better to die in Russia’s war than in a car accident, from alcoholism or from cancer.

A Russian musician mounts a modest antiwar protest and pays the price

“One day we will all leave this world,” Putin told a group of carefully selected women portrayed as mothers of mobilized soldiers in November, many of them actually pro-Kremlin activists or relatives of officials. “The question is how we lived. With some people, it is unclear whether they live or not. It is unclear why they die, because of vodka or something else. When they are gone, it is hard to say whether they lived or not. Their lives passed without notice.”

But a man who died in war “did not leave his life for nothing,” he said. “His life was important.”

Venerable rights organizations such as Memorial and the Sakharov Center have been forced to close, while respected political analysts, musicians, journalists and former Soviet political prisoners have been declared “foreign agents,” Many have fled or been jailed.

As sanctions slowly bite, prices soar and businesses struggle to adapt, economists and business executives predict a long economic decline amid isolation from Western technology, ideas and value chains.

“The economy has entered a long period of Argentinization,” a second Russian billionaire said. “It will be a long slow degradation. There will be less of everything.”

Russia ousts director of elite museum as Kremlin demands patriotic art

Through the war, Putin has profoundly changed Russia, clamping down harder on liberties, prompting hundreds of thousands of Russians to emigrate. In the future, pro-democracy liberals will not be tolerated, analysts say.

“The pro-West opposition will be gone,” Markov said.

“Whoever doesn’t support the special military operation is not part of the people,” he said, using Putin’s term for the war.

But the second Russian billionaire said he was convinced that one day, somehow, the country would become “a normal European nonimperial country” and that his children, who have U.S. passports, would return. “I want them to return to a free Russia, of course,” he said. “To a free and democratic Russia.”

Dixon reported from Moscow and Belton from London.

War in Ukraine: What you need to know

The latest: President Biden made a dramatic, unannounced visit to Kyiv on Monday, in a display of robust American support for Ukraine just four days before the anniversary of Russia’s full-scale invasion. The high-risk visit to the historic Ukrainian capital signaled continued commitment from the United States, Ukraine’s largest financial and military backer. Biden is set to visit Poland next, to discuss Western efforts to help Ukraine resist Russia’s invasion. Read the latest here.

The fight: Russia has been targeting Ukrainian civilian infrastructure with missile and drone strikes since October, often knocking out electricity, heating and water in the country. Despite heavy fighting, no side has made significant gains for months. Western allies agreed to a new wave of elaborate weapons, including Leopard tanks, hoping it may change the balance on the battlefield.

A year of war: Russian President Vladimir Putin’s war has set off a historic exodus of his own people, with data showing that at least 500,000, and perhaps nearly 1 million, have left Russia since the start of the conflict in Ukraine. Despite that and extensive sanctions, the Russian economy has remained more resilient than many expected. There are signs, however, that Putin’s luck may be starting to run out.

Photos: Washington Post photographers have been on the ground from the beginning of the war — here’s some of their most powerful work.

How you can help: Here are ways those in the United States can support the Ukrainian people as well as what people around the world have been donating.

Read our full coverage of the Russia-Ukraine war. Are you on Telegram? Subscribe to our channel for updates and exclusive video.

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miércoles, 15 de febrero de 2023

AN UPDATE ON CLIMATE CHANGE

 UPDATES ON CLIMATE CHANGE 


READ AND WATCH THIS 

https://www.economist.com/climate-change?utm_content=conversion.direct-response.non-subscriber.cta_middle&utm_campaign=a.23climatechange_content_5article_registered_variantB.2023-02-14&utm_medium=email.owned.np&utm_source=salesforce-marketing-cloud&utm_term=2/14/2023&utm_id=1490298&sfmc_id=0033z00003GB9vsAAD


CEI, 2023 

jueves, 9 de febrero de 2023

WHAT IS GOOGLE HEADING FOR ?

 


How will the rise of artificial intelligence (AI) reshape the tech industry? Until recently you might have used Google to search for an answer to that question. But now you have another option: to ask an AI-powered chatbot, which lets you gather information from the internet through typed conversations. ChatGPT, the leading example, can write essays, explain complex concepts, answer trivia questions and suggest menus or holiday destinations. By the end of January, two months after its launch, it was being used by more than 100m people, making it the fastest-growing consumer application in history. Our cover this week in most of the world examines the potential impact of chatbots on the lucrative business of internet search, and whether they might pose a threat to Google’s dominance. Microsoft, which has just integrated ChatGPT into its search engine, Bing, certainly hopes so. Could this be a Schumpeterian moment in which incumbents are toppled and rivals seize the initiative? The answer depends on moral choices, monetisation and monopoly economics. But a hugely valuable prize—to become the new front door to the internet—may be up for grabs.

In Asia, our cover considers the parable of Adani, a sprawling Indian business empire that has been humbled in the markets after a short-seller asked questions about its finances (the company denied the claims). Adani runs some of India’s biggest ports, stores a third of its grain, operates a fifth of its power­-transmis­sion lines and makes a fifth of its cement. Its woes do not just call into question the pharaonic ambitions of its boss, Gautam Adani. They are also a political embarrassment for Narendra Modi, the prime minister, who is a close associate of Mr Adani. For Mr Modi, big companies are important planks in his plan to boost capital investment in India’s infrastructure, as he strives to make the country a global manufacturing powerhouse. That has led to a culture of favouritism, subsidies and insufficient scrutiny of big business. The Adani affair thus poses the sternest test in years to Indian capitalism. India has many of the conditions in place for a sustained growth spurt. But if it is to achieve its potential, close and impartial oversight of corporate titans will be vital. 

 

 






Can a citizen arrest a suspect or a presumed criminal ?

 

What You Need to Know About Making a Citizen's Arrest

Whenever possible, you should report wrongdoing to the police instead of taking action on your own. Police officers are equipped with the proper intervention tools and trained to deal with incidents which may escalate to become violent.

Important Considerations

Making a citizen's arrest without carefully considering the risk factors may have serious unintended consequences for you and others involved. In most cases, an arrest consists of either actually seizing or touching a person's body in an effort to detain them.

Before deciding whether to make a citizen's arrest, you should be aware of the Citizen's Arrest Laws and consider the following:

  • Is it feasible for a peace officer to intervene? If so, report the crime to the police instead of taking action on your own.
  • Your personal safety and that of others could be compromised by attempting an arrest. Relevant considerations would include whether the suspect is alone and whether they possess a weapon.
  • Will you be able to turn over the suspect to the police without delay once an arrest is made?
  • Do you have a reasonable belief regarding the suspect's criminal conduct?

Making a Citizen's Arrest

If you do decide to make a citizen's arrest, you should:

  • Tell the suspect plainly that you are making a citizen's arrest and that you are holding him or her until police arrive.
  • Call the police.
  • Ask explicitly for his or her cooperation until police arrive.
  • Avoid using force, if at all possible, and use it to the minimum possible otherwise.
  • Do not question or search the suspect or his or her possessions. Your purpose is only to temporarily detain him or her until police arrive.
  • When police arrive, state the plain facts of what happened.

Citizen's Arrest Laws

In most cases, you must find a person either in the act of committing a crime, or escaping from and freshly pursued by persons who have lawful authority to arrest that person, in order to lawfully make a citizen's arrest. In particular, if you are arresting a person for an indictable offence, which is the most serious type of offence and includes violent offences, you can only make the arrest at the time you witness the person committing the offence. It is against the law to arrest a person after any lapse in time for having committed an indictable offence, unless it is relation to your property.

In special circumstances of any type of criminal offence that is committed on or in relation to your property, you may either:

  • arrest a person you find in the act of committing a crime; or
  • arrest a person within a reasonable period of time after having found that person committing a crime.

To be eligible to make a citizen's arrest for a crime on or in relation to property, you must be one of the following:

  • the owner of the property;
  • in lawful possession of the property; or
  • have been authorized by the owner or the person in lawful possession of the property.

The law allows you to use as much force as is necessary for the purpose of making a citizen's arrest, as long as you are acting on reasonable grounds. However, any force you use must be tailored to the circumstances, and you are criminally responsible for any excess force you use. In addition to the potential for a criminal prosecution, you may also face a civil lawsuit in relation to your conduct and any injury you cause.

The law requires that when making a citizen's arrest, the arrested individual must be delivered to a police officer without delay. If you make a citizen's arrest and do not call the police as soon as possible, the arrest might be ruled illegal, and you could face civil or criminal consequences.

Correctly identifying a suspect

In the special circumstances of making an arrest "within a reasonable time after" observing an offence (as opposed to while the offence is in progress), you are strongly urged to exercise additional care in confirming the identity of the suspect.

It is always extremely important to correctly identify a suspect and their criminal involvement. If you make a citizen's arrest at the very time a person is found committing a crime, the correct identification of the suspect will not likely be called into question.

However, if you make an arrest "within a reasonable time after" observing the offence, the accuracy of the identification of the suspect may be called into question.

You need to be conscious of the fact that situational factors such as the presence of a weapon, the number of individuals involved, environmental factors and heightened stress levels can negatively affect your recollection of a past incident and your ability to correctly identify a person you have previously seen committing an offence. Even if you genuinely believe that you have correctly identified the suspect after the crime was observed, the risk of mistaken identity is real, and must not be minimized.

If the person you attempt to arrest is the wrong person, the situation is potentially very dangerous. The person being arrested will not understand why they are being detained and may not submit to the arrest. In these circumstances, there is a real risk that if you arrest the wrong person, you could provoke a violent confrontation, and risk injury or death.

Warning

A citizen's arrest is a very serious and potentially dangerous undertaking. Unlike a police officer, private citizens are neither tasked with the duty to preserve and maintain public peace, nor properly trained to apprehend suspected criminals. Exercise extreme caution when attempting to make a citizen's arrest.

martes, 17 de enero de 2023

virtual reality in education : a case study

 CENTRO DE ESTUDIOS INGLESES   44 ANIVERSARIO 


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The following is an article of the use of virtual reality and IT TOOLS in EDUCATION : A CASE STUDY 


Read, prepare a summary and explain how this was applied , what for and its results . Your speech should not last shorter than 8 minutes . Practice your speaking at home and measure your time . 

ADD INFO ABOUT THE CASE FOR LANGUAGE LEARNING 

Impact of virtual reality use on the teaching and learning of vectors

  • 1Institute for the Future of Education, Tecnologico de Monterrey, Monterrey, Nuevo León, Mexico
  • 2Innovation in Educational Technology, Tecnologico de Monterrey, Monterrey, Nuevo León, Mexico
  • 3Institute for the Future of Education, School of Engineering and Sciences, Tecnologico de Monterrey, Monterrey, Nuevo León, Mexico
  • 4School of Engineering, Universidad Andres Bello, Santiago, Chile

The use of virtual reality in education has enabled the possibility of representing abstract concepts and virtually manipulating them, providing a suitable platform for understanding mathematical concepts and their relation with the physical world. In this contribution, we present a study that aims to evaluate the students’ experience using a virtual reality (VR) tool and their learning of three-dimensional vectors in an introductory physics university course. We followed an experimental research design, with a control and an experimental group, for measuring students’ performance in a pre-post 3D vectors questionnaire. We surveyed the experimental group about their perception of VR use regarding their learning objectives, their experience using VR as a learning tool during the sessions, and the value of using VR in class. We found that on the items in which visualization was important, students in the experimental group outperformed the students in the control group. Students evaluated the VR tool as having a positive impact on their course contents learning and as a valuable tool to enhance their learning experience. We identified four hierarchical categories in which students perceived the use of virtual reality helped them learn the course contents: Visualization, 3D Visualization, Identification, and Understanding. Overall, this study’s findings contribute to the knowledge of using virtual reality for education at the university level. We encourage university instructors to think about incorporating VR in their classes.

Introduction

Over the last decade, several universities with the common goal of pushing educational innovation forward have invested in centers for educational innovation with a focus on emerging technologies (Hidrogo et al., 2020a). Some of the most popular emerging educational technologies are virtual reality, blockchain, internet of things, artificial intelligence, among others. Particularly, virtual reality is in a crucial moment to be implemented massively, due to several reasons. Some characteristics of virtual reality make it a favorite candidate for its application for teaching and learning in higher education; (i) as a technological tool, it can be directly applied to the teaching-learning process. (ii) Its current technological maturity stage has allowed for the development of hardware and software that can be incorporated into the educational context. At the same time, the costs have been generally reduced, making the incorporation into the educational context more viable. (iii) It can boost curiosity among students (Hidrogo et al., 2020b); and (iv) for most students, the university is the only place where they can access this technology.

Virtual environments are becoming relevant in different areas of science education, including natural, medical and computer sciences (Chou et al., 2001; Broisin et al., 2017; Paxinou et al., 2020). Many studies about the use of VR in science education focus on students’ learning outcomes, motivation, and attitude when using VR (Arici et al., 2019). The literature reports no significant differences in learning outcomes when comparing VR with other active learning experiences (Klahr et al., 2007; Moro et al., 2021), but some studies do report learning gains when comparing VR with traditional learning (Johnson-Glenberg and Megowan-Romanowicz, 2017; Liu et al., 2020). The literature on the use of VR about abilities and attitudes in science students reports improvements in students’ achievement, interests and learning experience in STEM education (August et al., 2016; Al-Amri et al., 2020). The relevance of the use of VR to improve certain scientific skills, such as visualization of abstract concepts, has been highlighted by some studies (Güney, 2019; Hite et al., 2019).

The use of virtual reality in education has enabled the possibility of representing abstract concepts and virtually manipulating them, providing a suitable platform for understanding mathematical concepts and their relationship with the physical world. Many physical quantities, such as force and acceleration, are mathematically modeled with vectors for describing, computing, and predicting the physical world. Therefore, understanding and working with vectors is necessary for learning physics. The literature highlights the benefits of using VR in science learning. Different studies have reported the development of AR applications for learning vectors, their properties, and operations (Martin-Gonzalez et al., 2016; Langer et al., 2021). In this contribution, we present a study with the objective of evaluating students’ learning and experience when using a virtual reality tool to learn about three-dimensional vectors in a university physics course. We first present a literature review on the basic concepts of virtuality and educational technology. We define the context of the study and present the research questions. We provide the methodology for the study, the description of the participants, instruments, data collection, and analysis. We present the quantitative and qualitative results and discuss the relations between them. Finally, we conclude the article with some recommendations for implementing educational technologies in the science classroom.

Literature review

When working with virtual reality (VR) it is essential to review the definitions of mixed reality, augmented reality, and virtual reality to portray our stand on these concepts. Mixed reality is a type of hybrid environment that blends the physical environment with virtual objects (Tang et al., 2020). It describes a linear continuum that ranges from real environments (reality) to fully virtual environments (virtuality) (Milgram and Kishino, 1994 as cited by Tang et al., 2020). In mixed reality, the real and virtual contents allow for data contextualization, they provide real-time interactivity, and the content needs to be mapped and correlated with the 3D space (Tang et al., 2020). Within this continuum, we find augmented reality, which integrates virtual objects into real-life environments, usually using devices such as smartphones or wearable smart glasses (Chuah, 2018). The real-life environment and the virtual objects interact through the augmented reality device in real-time (Dodevska and Mihic, 2018). For example, when taking a real-life picture with a camera on a smartphone, AR can attach virtual objects to the photograph (Sahin and Yilmaz, 2020). It has been found that augmented reality helps students to visualize abstract concepts, allowing them to observe phenomena that would be impossible otherwise (Sahin and Yilmaz, 2020).

At the end of the reality-virtuality continuum, we find virtual reality. VR blocks out the real world and creates a fully virtual setting to immerse the users into the virtual world (Chuah, 2018). Since VR represents only three-dimensional virtual environments generated with computers, it is necessary to use the appropriate hardware and software to experience VR (Dodevska and Mihic, 2018). VR is an experience in which the user is physically in the real world, entering a three-dimensional virtual environment using a headset and a computer or with a mobile device (Frost et al., 2020). The VR market nowadays has contributed to academic research, engineering, and education, among other areas (Tang et al., 2020).

To design and develop VR learning experiences, it is necessary to consider key educational process elements, such as effective pedagogy, considering the time for teaching and learning activities, using appropriate tools and resources, and promoting student engagement (Tang et al., 2020). Buentello-Montoya et al. (2021) highlighted the importance of having an adequate pedagogical design when implementing VR and AR in the learning of mathematics. Research has found that virtual learning environments can enhance, motivate, and stimulate learning that the traditional approach could not achieve easily (Pan et al., 2006 as cited by Tang et al., 2020). Educational technologies can improve science courses by implementing effective scientific activities and bringing students closer to abstract situations that are difficult to recognize in real life (Sahin and Yilmaz, 2020). The development of virtual experiences in science teaching should be designed to enhance student learning and motivate positive attitudes in students.

Dodevska and Mihic (2018) highlight some advantages and disadvantages of using VR. As advantages, VR can help make decisions in complex projects, reduce time and efficiency, and provide simulations that could lower costs and improve experiences. The main disadvantages are that the initial costs of the hardware and software requirements and changing platforms may not be quite straightforward.

Virtual and augmented reality in science education

Virtual environments are becoming relevant for science education in different areas, such as computer science education (Broisin et al., 2017), nanotechnology education (Xie and Lee, 2012; Schönborn et al., 2016), biology education (Poland et al., 2003; Paxinou et al., 2020), building sciences education (Setareh et al., 2005), health science education (Chou et al., 2001), chemistry education (Miller et al., 2021), among others. Research suggests that VR can be effectively implemented as a virtual class for web-based science education (Shin, 2002). Pre-service science teachers become aware of the potential advantages and disadvantages of using virtual reality within a classroom setting after using a multi-user virtual environment (Kennedy-Clark, 2011). Cowling and Birt (2018) emphasize the need to put pedagogy before the technology to create mixed-reality simulations that satisfy students’ pedagogical needs with a design-based research approach.

The trends in mixed reality studies show that most studies focus on learning achievement, motivation, and attitude and that there is a lack of qualitative research in this area (Arici et al., 2019). Most research compares students’ learning outcomes when using VR to other approaches such as AR, hands-on experiences, and/or traditional education. Research suggests that VR is more effective for visual educational content, while AR is a better option for auditory learning (Huang et al., 2019).

The research has found no significant differences in learning outcomes between VR, AR and hands-on experiences. Research has shown that hands-on activities performed in virtual and physical environments are equally effective in producing significant learning outcomes regarding learners’ knowledge and confidence in early science education (Klahr et al., 2007). Other studies have found that there is parity between using hands-on learning and virtual reality in learning outcomes and cognitive processes (Lamb et al., 2018). In the teaching of medical sciences, several studies have found that there is no significant difference in learning outcomes between using VR, AR or tablet-based simulations; however, using VR participants reported adverse effects, such as dizziness (Moro et al., 2017a,b, 2021).

However, when comparing the use of VR with traditional approaches, the literature reports learning gains. McElhaney and Linn (2011) found that students experiment with virtual environments as intentional, unsystematic and exhaustive experimenters, and that these students had significant learning gains on physics understanding. Collaborative embodied learning in mixed-reality environments leads to increased learning gains compared to regular instruction in science learning (Johnson-Glenberg et al., 2014; Johnson-Glenberg and Megowan-Romanowicz, 2017). Using whole-body, immersive simulations of critical ideas in physics leads to significant learning gains, high engagement, and positive attitudes toward science (Lindgren et al., 2016). Using VR in the science classroom improves academic achievement and engagement scores compared to traditional courses (Liu et al., 2020).

Several studies have found that the use of VR improves specific abilities and attitudes in science students. Implementing a 3D Virtual reality learning environment improved female students’ physics achievement and motivation toward physics learning (Al-Amri et al., 2020). Scherer and Tiemann (2012) found three problem-solving abilities in virtual environments, achieving a goal state, systematic handling of variables, and solving analytical tasks. Motivation and students’ learning attitudes in immersive virtual environments for science education are related through the constructs of intrinsic value and self-regulation, while students’ attention and enjoyment relate to students’ learning in the immersive virtual environment (Cheng and Tsai, 2020). Implementing a Virtual Engineering Science Learning Lab (VESLL) has proven to improve student interest and learning experience in STEM education (August et al., 2016).

Güney (2019) highlights the relevance of visualization and visual literacy in instructional design for implementing technology in learning environments through a literature review on visual effects, visual literacy, and the design of multimedia instruction. Using a haptic virtual model with visual and tactile sensorimotor interactions may provide students with the opportunity to construct knowledge about submicroscopic phenomena (Schönborn et al., 2011). Using VR environments and technology for science learning, it is essential to consider students’ spatial acuity, since the learners’ cognitive development plays an important role in students’ perception of virtual reality (Hite et al., 2019). In the learning of mathematics, Schutera et al. (2021) highlighted the relevance of using AR in developing spatial visualization when learning vectors.

Definition of the study

viernes, 6 de enero de 2023

MEDIA CURRENT TRENDS

 STREAMING SERVICES ARE BOOMING IN ARGENTINA. | CEDOC/PERFIL

The figures are extremely high and serve as a striking example of how a relatively recent cultural trend has been consolidated in Argentina: a survey conducted by the specialised consultancy firm Carrier y Asociados has found that 93 percent of Argentine Internet users consume audiovisual content through streaming services. According to the study, Netflix continues to be the most "popular" option domestically, cited by 84 percent of users.

But the research does not arrive on its own. Another paper that has just been presented points in the same direction and dives even deeper into some data: after analysing the daily habits of more than a thousand Argentines from all over the country, in a representative sample of geographies and social classes, “it was seen that today the penetration of streaming is very high: two out of every three Argentines are already subscribed to some service of this type and this massiveness is striking," Sebastián Corzo, Marketing Director of the Kantar Division Insights consultancy firm, told Perfil. 

"In addition, although 67 percent say they are subscribed to some service, this is accentuated if you 'open' it up by age, since among those [aged] under 35 the percentage of subscribers grows to 80 percent," adds Corzo pointedly.

According to the expert, this is a very high figure, even when compared to other mass media consumption indicators: streaming service take-up surpasses radio and is already close to the reaching the figures of free-to-air television, which, with all long history of free access, has a penetration rate of close to 90 percent. Streaming consumption in Argentina is also higher than in most countries in the region – only Brazil equals or exceeds domestic rates.

Another important detail highlighted by Corzo in his analysis is that the younger the users are, the more platforms they subscribe to. "If we look at how many companies Argentines follow on average, we get 2.8: in other words, they have regular access to three services more or less. But, again, when the age of the consumer is under 35, the average rises to 3.2 subscriptions per capita," he explained.

Age is also associated with another phenomenon: the younger the users, the more likely they are to share their name and password with friends and family. "When asked about this issue, in general, 54 percent of users said they shared their passwords. But when we break this indicator down by age, it starts to rise, and among millennials and centennials, 75 percent say they share their passwords, which is a complex issue for platforms in terms of customer loyalty,” said Corzo.

 

Satisfaction 

The survey had discovered another local consumption trend. "When asked about satisfaction levels with streaming services, we found that – in general – users are satisfied. Traditionally, this was a reassurance to companies that their customers would be 'loyal' and remain with them over time," said the consumer expert. 

However, on this particular issue, the rules of marketing do not seem to follow those of other mass consumption areas: ninety-five percent said they were very satisfied with the content on their platforms. But despite that figure, 47 percent of respondents – almost half – said they would be willing to change their subscriptions in the next six months. “It's a high [level of] volatility and it has to do with people moving on and off of services, sometimes for a particular series. Obviously, it also has to do with the cost of the subscription,” explained Corzo.

As is common knowledge, the Covid-19 pandemic led to more people spending much more time in front of screens consuming content and social media. Now that "normality" is slowly returning, are habits changing? For the experts, consumption of streaming services is gradually dropping, but the "floor" is now higher. 

"It doesn't seem to be possible to return globally to previous levels,” said Corzo. “And here's an interesting fact: when people are asked where they are going to cut their spending in order to cope with inflation, 'online entertainment' is one of the three areas where people choose not to cut back, along with education and food.”

R