Glass Doors Research Articles

What Would Janeway and Roslin Do?: A Sci-Fi–Watching Library Historian Confronts COVID-19

What Would Janeway and Roslin Do?: A Sci-Fi–Watching Library Historian Confronts COVID-19

Reducing Vehicle Glass Sensitivity to Turbulent Pressure

<div class="section abstract"><div class="htmlview paragraph">Vehicle interior wind noise is typically managed through the overall exterior geometry of the vehicle, mirror shape and mounting location, sealing features and glass thickness and damping. Prior research has distinguished between contribution of fluctuating pressure due to air turbulence as compared to acoustic pressure to a passenger vehicles exterior at highway speeds. Because of the large difference in propagation speed between turbulent and acoustic pressure for on-road passenger vehicles, the structural response of the glass to turbulent versus acoustic pressure is not the same. The acoustic coincidence frequency of door glass is typically in the 2-3 kHz range. Turbulent coincidence frequency is much lower, and the effective transmission loss (TL) of the glass depends on the mix of turbulent and acoustic pressure on the exterior surface of the glass. Structural changes to the perimeter of the glass itself can reduce turbulent sensitivity, which, at highway speeds, can reduce low frequency noise due to turbulent pressure excitation of door glass vibration modes.</div></div>

Obstacle Avoidance and Dual-Tasking During Reaching While Standing in Patients With Mild Chronic Stroke

Background. Poststroke individuals use their paretic arms less often than expected in daily life situations, even when motor recovery is scored highly in clinical tests. Real-world environments are often unpredictable and require the ability to multitask and make decisions about rapid and accurate arm movement adjustments. Objective. To identify whether and to what extent cognitive–motor deficits in well-recovered individuals with stroke affect the ability to rapidly adapt reaching movements in changing cognitive and environmental conditions. Methods. Thirteen individuals with mild stroke and 11 healthy controls performed an obstacle avoidance task in a virtual environment while standing. Subjects reached for a virtual juice bottle with their hemiparetic arm as quickly as possible under single- and dual-task conditions. In the single-task condition, a sliding glass door partially obstructed the reaching path of the paretic arm. A successful trial was counted when the subject touched the bottle without the hand colliding with the door. In the dual-task condition, subjects repeated the same task while performing an auditory–verbal working memory task. Results. Individuals with stroke had significantly lower success rates than controls in avoiding the moving door in single-task (stroke: 51.8 ± 21.2%, control: 70.6 ± 12.7%; P = .018) and dual-task conditions (stroke: 40.0 ± 27.6%, control: 65.3 ± 20.0%; P = .015). Endpoint speed was lower in stroke subjects for successful trials in both conditions. Obstacle avoidance deficits were exacerbated by increased cognitive demands in both groups. Individuals reporting greater confidence using their hemiparetic arm had higher success rates. Conclusion. Clinically well-recovered individuals with stroke may have persistent deficits performing a complex reaching task.

Transfer path analysis and its application to diagnosis for low-frequency transient vibration in the automotive door slamming event

Transfer path analysis (TPA) method has been widely used in the frequency-domain applications. However, it is not suitable for transient vibration problems such as the abnormal vibration in the automotive door slamming event. In this paper, two time-domain TPA models are used for the abnormal transient vibration diagnosis in the automotive door slamming event whenever the door glass is located at its lowest location. To obtain the excitation forces, lab experiments have been carried out for the whole vehicle and door system. In the experiment, a door closing velocity device is built to maintain the closing speed (1.5 m/s) to obtain the operational responses of the indicator points on the 1st and 2nd transfer paths, as well as the target points. The frequency response functions (FRFs) for the 1st transfer path are then recorded using the experiment, including the excitation points to its indicator points and the excitation points to the target points. The FRFs for the 2nd transfer path are obtained using the finite element analysis (FEA), including the excitation points to its indicator points and the excitation points to the target points. With the two time-domain TPA models, the contribution of each transfer path can be obtained. The results show that the two time-domain TPA models can predict the transient vibration in the door slamming event. They also show that the main transfer paths of the abnormal vibration are from the upper door frame on the 1st transfer path and the regulator channel on the 2nd transfer path. These results provide insights for the improvement of the regulator channel and glass run channel designs in order to mitigate the abnormal transient vibration in the door slamming event.

Research on Improving NVH Performance of Automobile Side Door Glass in Use Based on 6 Sigma Method.

Automobile side door glass squeaks and rattles during use. This abnormal noise can make the driver and occupants irritable and reduce the comfort of the automobile. This reduces the sales of this automobile. This paper analyzes and determines the cause of squeak and rattle during the lifting and lowering process of the side door glass of an automobile. The noise is due to four reasons. One is that the distance between the inner waterproof belt and the automobile side door glass of the automobile is unreasonable, causing excessive friction between the automobile side door glass and the inner waterproof belt during the automobile side door glass up and down movement. Other factors affecting squeak and rattle may be the distance between the automobile side door sheet metal and the automobile side door glass, the thickness of the automobile side door glass and the characteristics of the inner waterproof belt. The first two dimensions are analyzed using the 6 sigma method, and the structure of the inner waterproof belt is improved and the flocking position is adjusted. The squeak and rattle phenomenon is explained using the implicit dynamic analysis method ABAQUS, and the compression load deflection after the installation of the inner waterproof belt is 3–9 N/100 mm. This research completely solves the squeak and rattle problem caused by the up and down movement of the side door glass of the automobile. This research has significance for solving practical engineering problems.

Storytime Programs as Mirrors, Windows, and Sliding Glass Doors? Addressing Children’s Needs through Diverse Book Selection

Much research suggests that exposure to diverse books that feature the lived experiences of people with marginalized or underrepresented identities influences how children perceive their own value and the significance of others who do and do not look like them. Library associations have recently called for greater attention to issues of diversity, equity, and inclusion to be reflected across all aspects of library services and programs. The purpose of this study was to examine the print materials used in public library storytime programs to identify the extent to which storytime exposes children to diverse people. Results indicate that, across all categories examined, books shared in storytimes are lacking in terms of diversity. The authors conclude that librarians need to be much more intentional in their efforts to diversify services and programs.

Medicine and the unconscious

One morning, in the early days of the first COVID-19 surge in the northeast USA, a colleague left the hospital after a busy stretch in the intensive care unit. It had not been an easy night, but he had seen worse. He pulled over at a grocery store on the way home and walked inside the familiar building's sliding glass doors, looked around at the half-stocked shelves and crowded aisles and had the first panic attack of his life.

The Lasting Legacy of Rudine Sims Bishop: Mirrors, Windows, Sliding Glass Doors, and More

This essay profiles Dr. Rudine Sims Bishop, the 2020 Distinguished Scholar Lifetime Achievement Award recipient. It begins with biographical information about Bishop and her career trajectory in education followed by descriptions of three of her landmark works and the ways a sampling of scholars have utilized and expanded upon them. The three works are the book Shadow and Substance: Afro-American Experience in Contemporary Children’s Fiction, an article titled “Strong Black Girls: A Ten Year Old Responds to Fiction About Afro-Americans,” and the groundbreaking article “Mirrors, Windows, and Sliding Glass Doors.” The essay concludes with thoughts from various individuals about the ways her scholarship has impacted them and the field.

Using (Counter)stories to (Re)shape our Communities and World(s)

Drawing upon my experience as a Canadian Muslim woman, scholar, educator, and mother, I share and inquire into my stories of experiences alongside youth. Thinking narratively (Clandinin, 2013), I weave my experiences using and teaching with/about single stories (Adichie) and counterstories (Lindemann Nelson, 1995) alongside students to (re)shape the multiplicity of ourselves (Lugones, 1987), relationships, and communities. This article will provide windows, mirrors, and sliding glass doors (Bishop, 1990) into my school and familial curriculum-making (Huber, Murphy, & Clandinin, 2011) experiences alongside Muslim youth. I hope that it will also provide insights into the experiences of diverse Muslim children, youth, and caregivers/families.

Caring for Non-English-Speaking Patients and Families During the COVID-19 Pandemic and Beyond.

“Hi there, my name is Dr Rabinowitz,” I stated, my voice muted as it traveled across the multiple layers of my personal protective equipment. I squinted as I introduced myself, a gesture of “hello” hardly visible beneath the surgical mask, respirator, and semitransparent eye shield I donned. For a few weeks now, I worked as a pediatric resident physician in a busy metropolitan emergency department. In an effort to maintain normalcy in my rapport-building during the coronavirus disease 2019 (COVID-19) pandemic, I standardized such a paired auditory and visual greeting in each of my patient encounters. Yet, as I stood before this mother and son dyad, I sensed that more than just a physical barrier lay between us. “No entiendo,” my patient’s mother remarked, “I do not understand.” She seemed afraid. I watched a few small tears roll down her cheek, ricocheting off of her facial covering and onto the floor below. Almost instinctively, I returned to the room’s entryway and slid open the glass door to create an …

Energy Efficiency Improvement Solutions for Supermarkets by Low-E Glass Door and Digital Semi-Hermetic Compressor

This research presents an energy efficiency improvement solution for supermarkets with the use of low-E glass doors for open refrigerators and a digital semi-hermetic compressor to fix the speed of semi-hermetic compressors. The impact of a door’s installation causes its load to be reduced by 40%, and the compressor shuts down frequently, which decreases its lifetime. In order to ensure that energy-saving solutions do not affect maintenance costs, the installation of a digital semi-hermetic compressor is proposed to lower costs and save energy. Our economic results from tests carried out at a 3000 square meter supermarket, which was open from 6:00 a.m. to 12:00 a.m. and in which we installed 82 doors on 15 open refrigerators, showed a 1.1-year payback period with an energy saving rate of 192,220 kWh/year for store No.1 (R22) and in which we installed 80 doors on 15 open refrigerators, showed a 1.4-year payback period with an energy saving rate of 171,185 kWh/year for store No.2 (R404A). The energy-saving effects of the digital semi-hermetic compressor, which fixes the speed of the semi-compressor and solves the problem of impact from fridge door installation, showed a 2.9-year payback period with an energy saving rate of 26,890 kWh/year for store No.1 (R22) and showed a 2.9-year payback period with an energy saving rate of 26,571 kWh/year for store No.2 (R404A). The results of store No.1 (R22) and store No.2 (R404A) showed no differences. This research is an extension of an energy-saving project that can be carried out on a continuous basis, increasing the efficiency of energy use and being a sustainable source of energy conservation.

Preview the Products on Display at Display Week 2021

Preview the Products on Display at Display Week 2021

Books as portals: using place to understand rural students’ individuated reading experiences

ABSTRACT Much has been written about the instructional insights illuminated by viewing texts as windows through which readers can view the experiences of those who are different from them in some way, mirrors through which they can see themselves reflected, and sliding glass doors through which they can step to experience a world different from their own. However, discussion of this metaphor’s implications for rural students is notably missing from the literature. Coupling this framework with place-based pedagogy, this inquiry focuses on the insights and experiences of ninth-grade rural students as they reflected on texts. After examining written reflections and transcripts from classroom discussions, the authors found that students made meaningful connections and built empathy through texts they individually identified as windows and sliding glass doors. Mirror texts were empowering – except when students did not feel seen in the literature they read. The authors conclude with instructional recommendations based on findings.

Improving Energy Efficiency in Supermarkets by Retrofitting Low-E Glass Doors for Open Refrigeration Systems with Digital Semi Hermetic Compressor

This research will be presenting energy efficiency improvement options by retrofitting doors for open refrigeration systems in Central Thailand supermarkets that open during the daytime (06:00 am – 06:00 pm), and are closed during the night-time (00:00 am – 6:00 am). The materials and methods used consisted of 15 open refrigeration cabinets with 82 retrofitted doors supported by 41 frames, with the temperature set at medium. The power consumption was indicated in kW, kWh through a power meter data logger for analysis and summarization. The investment required was €21,694 /store, while the payback period of this research was determined to be at 14 months. The cost of energy savings was found to be within a period of 1.1 years, at the rate of 192,220 kWh/year or €18,503 annually. The retrofitted doors is expected to reduce the cooling load and over-burdening of the compressor. The research found that the most viable solution was to use a digital semi-hermetic compressor that can operate in unload and full load status, that was being controlled by the evaporator temperature (TEV) which was set at -10 degree, the condenser temperature (TCD) set at 38 degrees, and the superheat temperature (TSH) at 10 degrees. In the unload status, the power consumption of the digital semi hermetic compressor will decrease by 50%, which has a significant impact for energy savings and is important for night-time when low cooling load is required whereby the compressor’s multiple start–stop cycles are not required. The investment for a digital semi-hermetic compressor was determined to be €7,800/store, and is able to yield energy savings of up to 26,890 kWh/year, or €2,589 annually, with a payback period of 2.9 years.

CFD simulation of anti-fogging coatings performance in refrigerated display cabinets

A numerical procedure for the simulation of both fogging and the defogging process on the glass door of a vertical refrigeration display cabinet for chilled food is presented. The large scale problem within the cabinet (convective air flow and heat transfer, moisture mass transport, unsteady conduction through a multi-glazed door) is modelled via a commercial CFD code, whereas the water layer is modelled, via in-house user defined routines, as a collection of tiny droplets in order to take into account the surface wetting properties, the latent heat contributions and the area effective wet fraction. Local water layer equivalent thickness and time needed for the complete defogging are evaluated for different indoor conditions. The influence of anti-fog coatings is investigated comparing different droplets contact angle, from 30° to 90°.

Review: Go Ahead in the Rain: Notes to A Tribe Called Quest, by Hanif Abdurraqib

Review: <i>Go Ahead in the Rain: Notes to A Tribe Called Quest</i>, by Hanif Abdurraqib

O013 / #557: LIBER8 GLASS GOALS PROJECT: A NOVEL METHOD FOR ENSURING DAILY, INDIVIDUALIZED PATIENT-GOAL SETTING AND TEAM COMMUNICATION.

Aims & Objectives: Daily goals checklists have been shown to improve patient care and team communication in the critical care setting. Institutional surveys showed that staff found previous checklists ineffective. The objective of this study was to evaluate a novel daily goals checklist using the glass door of the patient rooms, as an easily visible communication tool, to set patient goals and track progress in a Pediatric Intensive Care Unit (PICU). Methods: We used the Pronovost’s 4 E’s model (Engage, Educate, Execute, and Evaluate) to implement the Glass Goals. The Glass Goals are a template on patient doors, for goal setting in specific domains of sedation, breathing, circulation, diet, early mobilization, fluids, and family goals. Content was created in collaboration with PICU staff, leadership, and families, and rolled out over 1 month. Goal setting and team communication were assessed using pre- and post-implementation rounding audits and surveys, and a post-implementation uptake assessment.Results: Pre-implementation rounding audits on 49 patients found the frequency of goal setting was 40.2% across all domains excluding family goals. Median rounding time was 11:46 (IQR = 8:25). Post-implementation, Glass Goals completion was 94.6% (N = 74). Post-implementation surveys and rounding audits are ongoing. Conclusions: Preliminary analyses indicate that implementation of the Glass Goals leads to improved uptake of patient goal setting and team communication. Future analyses will assess post-implementation goal setting during rounds, rounding time, and perceptions of the Glass Goals by parents and HCPs using surveys. Acknowledgements: Hannah Zimmerman, Grace Lamond, Data Collection Assistants; McMaster Family Advisory Council; Dr. Samara Zavalkoff

COVID-19 through the Latinx infectious disease doctor's eyes

COVID-19 through the Latinx infectious disease doctor's eyes

Implementing a Novel Through-Glass Chest Radiography Technique for COVID-19 Patients: Image Quality, Radiation Dose Optimization, and Practical Considerations

Rationale and objectives: The novel coronavirus (COVID-19) pandemic has presented many logistical challenges, including unprecedented shortages of personal protective equipment (PPE). A technique of obtaining portable chest radiographs (pCXR) through glass doors or windows to minimize technologist-patient contact and conserve PPE has gained popularity, but remains incompletely evaluated in the literature. Our goal was to quickly implement this technique and evaluate image quality and radiation dose. Materials and methods: An infographic and video were developed to educate nurses and technologists on the through-glass pCXR technique. Imaging parameters were optimized using a phantom and scatter radiation was measured. Three reviewers independently evaluated 100 conventionally obtained and 100 through-glass pCXRs from March 13, 2020 to April 30, 2020 on patients with suspected COVID-19, using criteria for positioning and sharpness/contrast on a 1 (confident criteria not met) to 5 (confident criteria met) scale. Imaging parameters, including deviation index (DI) were recorded for all radiographs. Results: The through-glass method was rapidly adopted and conserved one isolation gown per interaction. Although there was a statistically significant difference in the positioning (P value 0.018) and sharpness/contrast (P value 0.016), the difference in mean ratings was small: 4.82 vs 4.65 for positioning and 4.67 vs 4.50 (conventional vs modified) for sharpness/contrast. Scatter radiation was measured using a thorax phantom and found to be acceptable for the patient and nearby personnel. Standard deviation was higher for the DI for the through-glass technique (2.8) compared to the conventional technique (1.8), although the means were similar. Conclusion: The through-glass technique was quickly implemented, producing diagnostic quality chest radiographs while conserving PPE and reducing risks to radiology staff. There was more variability with imaging technique and DI using the through-glass technique, likely due to technologist uncertainty regarding technical modifications. Further work to reduce this variation is necessary to optimize quality and dose.

A Case of Neck Injury Penetrating by Pieces of Glass to the Oral Cavity

All penetrating neck wounds are potentially dangerous and require emergency treatment, because there are important vessels, nerves, and organs in the neck. We report the rare case of a 71-year-old man with neck injury caused by a glass fragment that penetrated into the floor of the mouth from the submandibular region. The patient had accidentally fallen through a glass door and sustained a 15-cm long incised wound in his neck. He was initially transferred to a district hospital, where he was diagnosed as having arterial bleeding and a neck injury penetrating into the oral cavity; ENT surgeons at the hospital performed temporary hemostasis and tracheotomy under local anesthesia, and the patient was urgently transported to our hospital by ambulance. On admission, he was conscious, and his general condition was good. CT showed no damage to the major vessels, but revealed free air around the sublingual region. Therefore, emergency surgery was performed to repair the perforation from the neck into the oral cavity under general anesthesia. We found the facial artery and facial vein and ligated them during the operation, and the opening into the oral cavity was closed with absorbable sutures. The postoperative course was good, the patient resumed oral intake on day 4 after the surgery, and he was discharged from the hospital on day 9 after the surgery, with the only postoperative complication of palsy of the marginal mandibular branch of the facial nerve. In this report, we review nine cases of neck injury penetrating into the floor of the mouth and 11 cases of neck injury caused by a glass fragment reported in the literature and discuss their clinical findings.