Roller Coaster Ride Research Articles

An “Adult” with Autosomal Recessive Polycystic Kidney Disease: A Roller Coaster Ride to a Clinical Diagnosis

We present a young male being treated as an idiopathic chronic kidney disease on dialysis for 10 years with splenomegaly. Further workup and retrospective historical details confirmed the diagnosis of autosomal recessive polycystic kidney disease and coexisting Caroli’s syndrome. The case is being presented for its rarity and glitches encountered during its workup.

Effects of cannabidiol on psychosocial stress, situational anxiety and nausea in a virtual reality environment: a protocol for a single-centre randomised clinical trial

IntroductionThe non-intoxicating plant-derived cannabinoid, cannabidiol (CBD), has demonstrated therapeutic potential in a number of clinical conditions. Most successful clinical trials have used relatively high (≥300 mg) oral doses of CBD....

Are You Curious About Curiosity?

Kids (and adults) are often curious. Maybe you are curious about dinosaurs, giant squids, or rollercoaster rides. But have you ever been curious about why you are curious about some things but not about other things? In the last 10 years, scientists have asked similar questions about curiosity. In this article, we will share some of the answers. We explain how scientists across the world study curiosity. We also explain that people become curious to seek out specific information or to explore new things. Based on research on curiosity and the brain, scientists think that curiosity is a signal that it is valuable (or rewarding) to learn something or figure something out. Curiosity can even make you remember information better. After reading this article, we hope that your curiosity is satisfied!

The Roller Coaster Ride of Oil and Gas Investments

The Roller Coaster Ride of Oil and Gas Investments

Weaving a Bond between the Teacher and the Taught: Using ‘Voice Thread’ as Digital App for ESL Learners

Education in this digitalized world has witnessed many a roller coaster rides. The revolution brought about by digital technology has affected the education sector to completely change the face of conventional teaching and learning. With the spate in the use of digital apps in the academic arena, the self-paced and personalized learning and the concept of teachers as ‘new learners’ has apparently challenged the role of both the teacher and the taught. Furthermore, the stage set for ‘online’ teaching during COVID 19 pandemic acted as a catalyst which resulted post- COVID in innovative strategies in teaching like blended learning, hybrid learning etc. Mobile phones, laptops and other similar devices became connecting links between the teachers and learners even outside the classroom. Learners of English as second language were exposed to digital apps to enhance their language skills, but lacked the expertise for deriving maximum benefit. The challenge for teachers put them in the category of ‘new learners’ in using these apps for effective teaching learning environment. In addition to the problems faced by second language learners to express their thoughts and ideas in speech, the challenge of teaching effective oral communication has always been a matter of concern for the teachers. In the Indian scenario, the level of learners is so varied and diverse that creating a common teaching platform becomes difficult. Also, learning gets hampered due to students’ anxiety, hesitancy and lack of interaction. ‘Voice Thread’ as a digital app presents flexibility features which are student centered and learner friendly. Besides the learners using the app to record, upload and share their audios, the teachers could also become a connecting link to motivate their efforts and improve and enhance their speaking skills. The paper is an attempt to bring Voice thread to be effectively used in Indian classrooms for teaching effective oral communication.

Case Law Trend: Foreign Permanent Establishment Losses Under the Fundamental Freedoms: Does W AG Bring an End to a Rollercoaster Ride?

The article discusses the W AG case and the Court of Justice’s (the Court) previous cases on the cross-border deduction of foreign permanent establishment (PE) losses. The inconsistency of the case law is highlighted by demonstrating first the conflicts that remain in the case law regarding the status of final PE losses in the enterprise’s residence state, second, by the arbitrary use of comparability criteria by the Court when comparing the situation of domestic and foreign PEs. The article examines the consequences of the W AG decision with regard to the remaining questions on foreign PE losses, the potential impact on foreign subsidiary losses, and the damaging effect of the inconsistency of the Court’s methodology on the quality of its case law. EU fundamental freedoms, CJEU case law, foreign losses, permanent establishment losses, final losses, exemption method, unilateral exemption, exemption under tax treaty

A first analysis of possible elementary causes of self‐excited vibrations in roller coaster rides

AbstractThe emergence of vibrations during a roller coaster ride is a recurring phenomenon that can deteriorate the overall experience and accelerate material fatigue. Nevertheless, the causes of such vibrations are still not completely understood and are consequently not fully predictable during the design process. One possible source lies on the irregularities of the rails, acting as a forced external excitation. However, a spectral analysis shows deviations with respect to real measurements [1], as the frequencies are not synchronous with the car velocity divided by the spatial irregularity period. Therefore, there is an indication that the vibrations may be due to self‐excitation and/or that the developed models should consider other phenomena not yet contemplated. This investigation analyses –for the first time to the knowledge of the authors– the plausibility of various causes of self‐excited vibrations during a roller coaster car motion. Given the complex structure of a real roller coaster train and the intricate geometry of the track, the study considers as a first step minimal dynamical models running along a straight track. The cause analyzed in this paper is the contribution of the transversal friction force component that develops in the wheel‐rail contact interface to the destabilization of the longitudinal motion, as well as the effect of the various geometrical and inertial parameters. In this first analysis, no external excitation is considered. For a range of parameters, the minimal system presents a Hopf bifurcation. The results are plausible from the general behavior and thus this cause may be retained as a candidate for the real vibrations occurring in roller coasters. However, the applicability of these preliminary results to general roller coaster motions is not yet confirmed, but a superposition with other causalities may render effective. In further investigations, a complete train motion on curved tracks and external perturbations will be studied to determine the share of the different causes.

Headache and Dizziness after Roller Coaster Rides: A Case Series of 31 Patients.

Previous literature on roller coaster injuries focuses on catastrophic injuries. We conducted a retrospective study of 31 adults with headache or dizziness after roller coaster rides. Twenty five of 31 (81%) patients presented with new or worsening headache, predominantly migraine (15/25, 60%), including 8/25 (32%) with chronic migraine. Of the chronic migraine patients, 4/8 (50%) already had the diagnosis and presented with an exacerbation. Five of the 25 (20%) were ultimately found to have a cerebrospinal fluid (CSF) leak. While persistent symptoms appear to be relatively rare, patients with chronic migraine and potential CSF leaks should consider skipping these attractions.

Roller Coaster Ride of Teaching Faculty under Pakistan Medical Commission

doi: https://doi.org/10.12669/pjms.38.4.6021
 How to cite this:Ehsan A, Raza A. Roller Coaster Ride of Teaching Faculty under Pakistan Medical Commission. Pak J Med Sci. 2022;38(4):780-781. doi: https://doi.org/10.12669/pjms.38.4.6021

Supplemental Material for The “Roller Coaster Ride”: A Longitudinal Investigation of the Dynamic Relationship Between Chinese Counseling Trainees’ Self-Efficacy and Their Clients’ Outcome and the Mediating Effects of Working Alliance and Session Evaluation

Supplemental Material for The “Roller Coaster Ride”: A Longitudinal Investigation of the Dynamic Relationship Between Chinese Counseling Trainees’ Self-Efficacy and Their Clients’ Outcome and the Mediating Effects of Working Alliance and Session Evaluation

Decoding subjective emotional arousal from EEG during an immersive virtual reality experience.

Immersive virtual reality (VR) enables naturalistic neuroscientific studies while maintaining experimental control, but dynamic and interactive stimuli pose methodological challenges. We here probed the link between emotional arousal, a fundamental property of affective experience, and parieto-occipital alpha power under naturalistic stimulation: 37 young healthy adults completed an immersive VR experience, which included rollercoaster rides, while their EEG was recorded. They then continuously rated their subjective emotional arousal while viewing a replay of their experience. The association between emotional arousal and parieto-occipital alpha power was tested and confirmed by (1) decomposing the continuous EEG signal while maximizing the comodulation between alpha power and arousal ratings and by (2) decoding periods of high and low arousal with discriminative common spatial patterns and a long short-term memory recurrent neural network. We successfully combine EEG and a naturalistic immersive VR experience to extend previous findings on the neurophysiology of emotional arousal towards real-world neuroscience.

TCTAP C-001 A Roller Coaster Ride: NSTEMI and Recurrent Angina After Coronary Artery Bypass in a Young Patient

TCTAP C-001 A Roller Coaster Ride: NSTEMI and Recurrent Angina After Coronary Artery Bypass in a Young Patient

Velocity, acceleration, jerk, snap and vibration: forces in our bodies during a roller coaster ride

Changing acceleration and forces are part of the excitement of a roller coaster ride. According to Newton’s second law, , every part of our body must be exposed to a force to accelerate. Since our bodies are not symmetric, the direction of the force matters, and must be accounted for by ride designers. An additional complication is that not all parts of the body accelerate in the same way when the acceleration is changing, i.e. when there is jerk. Softer parts of the body provide varying levels of damping, and different parts of the body have different frequency responses and different resonance frequencies that should be avoided or reduced by the roller coaster designer. This paper discusses the effect of acceleration, jerk, snap and vibration on the experience and safety of roller coaster rides, using authentic data from a dive coaster as an example.

It’s a Roller Coaster Ride! A Metaphorical Analysis of Effective OT in Child Mental-Health and Learning Disability

Abstract Date Presented 03/28/20 Interpretive phenomenological research gathered metaphors summarizing OTs lived experiences of effective OT. Data analysis identified themes of obstruction and flow; learning and growth; creative complexity; containment; and emotions and embodiment. The Rollercoaster Ride: a summative metaphor, encapsulates an occupational perspective of health. It aims to improve children’s participation by finding more effective interventions to address the negative impacts of emotional influences. Primary Author and Speaker: Maria Avantaggiato-Quinn

3D Bioprinting: The Roller Coaster Ride to Commercialization.

Three-dimensional (3D) bioprinting as a technology is being researched and applied since 2003. It is actually several technologies (inkjet, extrusion, laser, magnetic bioprinting, etc.) under an umbrella term “3D bioprinting.” The versatility of this technology allows widespread applications in several; however, after almost 20 years of research, there is still a limited number of cases of commercialized applications. This article discusses the potential for 3D bioprinting in regenerative medicine, drug discovery, and food industry, as well as the existing cases of companies that create commercialized products and services in the aforementioned areas and even in fashion, including their go-to-market route and financing received. We also address the main barriers to creating practical applications of 3D bioprinting within each sphere the technology that is being studied for.

An Emotional Roller Coaster: Electrophysiological Evidence of Emotional Engagement during a Roller-Coaster Ride with Virtual Reality Add-On

Emotions are crucial ingredients of meaningful and memorable tourism experiences. Research methods borrowed from experimental psychology are prime candidates for quantifying emotions while experiences are unfolding. The present article empirically evaluates the methodological feasibility and usefulness of ambulatory recordings of skin conductance responses (SCRs) during a tourism experience. We recorded SCRs in participants while they experienced a roller-coaster ride with or without a virtual reality (VR) headset. Ride elements were identified that related to physical aspects (such as accelerations and braking), to events in the VR environment, and to the physical theming of the roller coaster. VR rides were evaluated more positively than normal rides. SCR time series were meaningfully related to the different ride elements. SCR signals did not significantly predict overall evaluations of the ride. We conclude that psychophysiological measurements are a new avenue for understanding how hospitality, tourism and leisure experiences dynamically develop over time.

Peripapillary Subretinal Hemorrhage and Vitreous Hemorrhage after Roller Coaster Riding

Peripapillary Subretinal Hemorrhage and Vitreous Hemorrhage after Roller Coaster Riding

Implementation of Finite State Automata in an Amusement Park Automatic Ticket Selling Machine

Introduction: Amusement Park is a place that provides various attractions for entertainmentpurpose. People can enjoy games, rides such as roller coaster rides, merry-go-round, etc.Over the time, technology has grown. Many things that are usually done manually by humansare now being replaced by computers. With an automated ticket selling machine, the processof buying the ticket of an amusement park becomes easier for the user. Automata theory is atheoretical branch that has not been widely known to many yet plays essential role in the fieldof computer science. The main concept of automata theory itself is how to make machinesworks automatically. Therefore, this study aims to show the implementation of the concept ofAutomata theory in an amusement park automatic ticket selling machine.Methods: Themethod used to develop the application is formal methods known as Finite State Automata.We also used Sequential Linear method to design the application. Formal method is amathematical modelling that links the production, development, and verification of softwareand hardware. In this application, the concept of Finite State Automata was applied torecognize and then capture the pattern on the process of ticket selling machine.Results: Theresult of this study shows that Finite State Automata can become one of the alternatives todesign an automatic ticket selling machine for an amusement park by reading each inputgiven by the user and then converts it to the language know by the Finite StateAutomata.Discussion: In this application, the payment method is by inserting a certainamount of cash into the machine and the machine will proceed to the next process. However,for future development another payment method can be added. For example, instead ofinserting cash, user can choose to pay using debit as well as credit card.

Pulmonary Embolism and Unfractionated Heparin: Time to End the Roller Coaster Ride.

Pulmonary Embolism and Unfractionated Heparin: Time to End the Roller Coaster Ride.

A Rollercoaster Ride of Emotions: Investigating Learning Challenges in a Doctoral Learning Journey

Although there has been a substantial increase in the number of research students enrolled in public higher learning institutions in Malaysia, the high attrition rate amongst doctoral students is quite alarming. Various research efforts have been carried out to investigate this phenomenon; however, most of the studies were focused solely on supervision. Even less is known about the challenges that research students in Malaysia face during their doctoral learning journey and how they cope with these challenges. This study examined the learning challenges that research students experienced during their doctoral learning journey and how they managed to overcome the challenges. This qualitative study involved an extensive collection of time- and context-sensitive data and emphasized on giving participants a personal voice. Snowball sampling was used and a total of eight participants were involved in this study. Four stages of data collection generated rich data from lengthy interviews and provided opportunities for re-interviewing the same participants all over again. Three types of interviews were utilised, and necessary steps were taken to ensure trustworthiness was established in this research. Based on the research findings, three broad categories of learning challenges were identified namely supervision, academic and psychological. Academic challenges were most profound in their learning in which knowledge creation and conceptualization being the most challenging skills whilst psychological issues were the least challenging. This study introduced a fresh perspective to the literature on research students, which has been dominated by investigation into the supervision process.