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Proceedings ArticleDOI
17 Aug 2015
418 Citations
Specifically, we show that it is possible to design devices and WiFi APs such that the WiFi AP in the process of transmitting data to normal WiFi clients can decode backscatter signals which the devices generate by modulating information on to the ambient WiFi transmission.
Open accessProceedings ArticleDOI
Yoon Chae, Shuai Wang, Song Min Kim 
04 Nov 2018
26 Citations
This paper presents G-Bee, a CTI avoidance technique that uniquely places ZigBee packet on the guard band of ongoing WiFi traffic, which effectively safeguards the packet from WiFi interference.
Open accessProceedings ArticleDOI
30 Nov 2015
25 Citations
We propose the use of WiFi probes, management frames of WiFi, that periodically radiate from mobile devices (as proxies for humans), and existing WiFi access points to automatically capture radio signals and detect human copresence.
Proceedings ArticleDOI
Sangki Yun, Lili Qiu 
24 Aug 2015
86 Citations
Our approach leverages LTE and WiFi antennas already available on smartphones to let LTE and WiFi transmit together and successfully decode the interfered signals.
It is novel in that it removes the WiFi association overhead using the beacon stuffed WiFi communication and also provides an efficient collision estimation algorithm to issue appropriate warnings.
The proposed scheme at the transmitter can exterminate the interferences by only setting some signals in the transmitted signal block to be the same as those of the previous transmitted signal block.
We develop a new digital signal processing algorithm called Common Multiple Folding (CMF) that accurately amplifies periodic beacons in WiFi interference signals.
This paper demonstrates that it is possible to leverage WiFi signals from commodity mobile devices to enable hands-free drawing in the air.
However, the multi-path fading of WiFi signals causes time-varying received signal strengths of WiFi signals, which leads to poor accuracy of WiFi localization.
This paper exploits the Clear Channel Assessment (CCA) mechanism in WiFi devices and proposes a novel policing framework, WiCop, that can effectively control the temporal white-spaces between WiFi transmissions.

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How does biodiversity impact the prevalence and spread of chronic diseases in human populations?
5 answers
Biodiversity plays a crucial role in influencing the prevalence and spread of chronic diseases in human populations. High biodiversity levels within ecosystems can reduce the transmission of infectious agents, subsequently lowering the risk or incidence of human diseases. Conversely, biodiversity loss due to anthropogenic activities can lead to an increase in disease risk, as seen in the context of environmental changes triggering a rise in infectious diseases. Additionally, the shrinking frontier between wildlife, humans, and domestic animals due to large-scale land use changes can facilitate the passage of pathogens between different reservoirs, heightening the risk of disease transmission to humans. Therefore, maintaining biodiversity is essential for mitigating the prevalence and spread of chronic diseases in human populations.
What are the specific operational standards being implemented for rail transport in the Philippines?
4 answers
Specific operational standards being implemented for rail transport in the Philippines include measures to reduce queuing time for passengers, ensure passenger safety and comfort through proper fitting of train features, manage crowd intelligently using embedded systems and software applications, and implement a rail transport operation dispatch system for efficient traffic dispatch. These standards involve utilizing industrial engineering tools for efficiency improvement, adjusting non-conforming train features based on anthropometric measurements, integrating embedded systems and software applications for crowd management, and implementing a rail transport operation dispatch system for centralized control and resource sharing. These initiatives aim to enhance passenger experience, safety, and operational efficiency within the Philippine rail transport system.
How is cholera transmitted?
4 answers
Cholera is primarily transmitted through contaminated food and water sources, as well as through contact with infected individuals' vomit or feces. The Vibrio cholerae bacterium responsible for cholera infection can also be spread by consuming raw shellfish that are naturally infected. The disease is characterized by severe dehydration due to profuse watery diarrhea, leading to electrolyte imbalances and potentially fatal hypovolemic shock. Factors such as poor sanitation, lack of access to clean water, and inadequate hygiene practices contribute to the persistence of cholera in developing countries, where millions of cases and thousands of deaths occur annually. Control measures like oral cholera vaccines, health education, and proper sanitation play crucial roles in preventing and managing cholera outbreaks.
Are high-voltage lines above ground dangerous?
4 answers
High-voltage lines above ground can pose risks due to high-intensity electric fields and potential dangers like corrosion, abrasion, and strand breakage. To mitigate these risks, innovative solutions have been proposed, such as high-altitude line patrol robots equipped with danger detection sensors and self-rescue mechanisms. Additionally, warning devices based on ground potential installation can help prevent external force damage to high-voltage transmission lines by providing visual and auditory warnings. Studies have shown that electric fields near extra high voltage and ultra high voltage transmission lines should be monitored to ensure they comply with safety guidelines. Implementing cost-effective solutions, like metal hooks connected to neutral wires, can enhance safety by enabling standard overcurrent devices to detect and disconnect in case of line faults.
How are heart rate monitors used in cardiac rehabilitation?
5 answers
Heart rate monitors play a crucial role in cardiac rehabilitation by aiding in the assessment and monitoring of cardiovascular improvements in patients. Wearable devices like wrist-worn monitors and chest strap monitors are commonly used during exercise sessions. These devices help track heart rate accurately during different activities, ensuring patients stay within safe exertion levels. Additionally, innovative approaches like using vibro-tactile feedback for heart rate zones have shown promise in helping users maintain optimal heart rates effectively. By utilizing these monitoring tools, healthcare providers can tailor exercise programs, track progress, and ensure safe and effective rehabilitation for patients with cardiovascular conditions.
What is a book mobile apps?
5 answers
A book mobile app is a software application designed for mobile devices to facilitate various book-related activities. These apps offer features such as book lending and renting networks, search functions for books and movies, book trading maps, and interactive digital app-books. For instance, a book savior mobile application enables users to rent textbooks at a reasonable cost by connecting them with willing lenders. Another app, Book and Movie Search, provides quick access to summaries and information about books and films based on genres. Additionally, a book trading mobile application allows users to buy books from nearby locations easily. Moreover, a mobile book-shaped application device with flexible displays mimics the experience of flipping through pages like a physical book, enhancing multitasking capabilities. The rising demand for digital app-books with interactive features has led to the development of user interaction libraries for easier and more efficient app-book creation.
What is the global prevalence of intestinal parasites in children under the age of 5?
5 answers
The global prevalence of intestinal parasites in children under the age of 5 varies significantly across different regions, ranging from 6.63% to 86%. Factors influencing this prevalence include poor sanitation, limited access to safe drinking water, and socioeconomic conditions. In specific regions like Ethiopia, the prevalence of intestinal parasites among children under 5 was found to be 29.4%. These infections are linked to factors such as rural residency, poor handwashing practices, and untrimmed fingernails. Additionally, the presence of infected individuals with poor hygiene practices contributes to persistent transmission of intestinal parasites, potentially leading to stunting in affected populations. To address this public health issue, targeted interventions, improved health education, evidence-based legislation, and stakeholder coordination are recommended.
Does public health apply to cats?
4 answers
Public health does indeed apply to cats, as they can serve as carriers of various pathogens with zoonotic potential, posing risks to human health. Cats have been identified as reservoirs for parasites like Giardia duodenalis and Toxoplasma gondii, which can be transmitted to humans, leading to public health concerns. Studies have shown that cats can harbor pathogens such as Enterococcus faecalis, exhibiting antimicrobial resistance and virulence factors, further emphasizing their role in public health as potential sources of infections. Efforts to manage stray cat populations in public areas, like hospitals, have been successful in balancing health safety with the presence of animals, highlighting the importance of addressing the public health implications of cats in various settings.
How does the cognitive walkthrough approach impact the usability of mobile applications?
4 answers
The cognitive walkthrough approach significantly impacts the usability of mobile applications by providing insights into user experiences and challenges. This method involves analyzing how users interact with the application step-by-step to identify usability issues and propose enhancements. Through cognitive walkthrough testing, researchers can evaluate the ease of use of an application from various age groups' perspectives and optimize it to cater to a wide range of users. By conducting usability testing using cognitive walkthrough and task scenarios, applications like ALINGKA and Flip can assess user satisfaction levels, identify problems, and determine areas for improvement. Additionally, the cognitive walkthrough method helps in designing applications that are appropriate for online learning activities, ensuring that technological tools like teleconference applications are effectively utilized.
Description for environmental monitoring in cleanroom?
5 answers
Environmental monitoring in cleanrooms is a critical component for ensuring the microbiological quality and safety of products manufactured in these controlled environments, particularly in the pharmaceutical and biotechnology industries. A comprehensive environmental monitoring program encompasses several key elements, including robust gowning procedures, cleaning protocols, and both environmental and personnel monitoring measures to minimize microbial bioburden. The design of cleanrooms aims to minimize levels of particulates, including microorganisms, to protect the integrity of the manufacturing process. Understanding the normal microbiota of cleanrooms is essential for assessing microbiological quality and for evaluating the introduction of new sampling methods. Studies have shown that a significant portion of the microbiota in cleanrooms consists of Gram-positive bacteria, with a majority being part of the normal human microbiota, and others originating from air and water. Technological advancements have led to the development of environmental monitoring systems that utilize sensors and wireless communication to monitor cleanroom parameters, enhancing the ability to maintain controlled conditions. Intelligent video monitoring systems have been introduced to ensure compliance with gowning procedures and to facilitate cleanroom management by providing timely warnings when protection standards are not met. The necessity of anaerobic environmental monitoring is debated, but it is considered important for aseptically filled products, highlighting the need for quality risk assessments to determine monitoring frequency. Cleanrooms require physical factors such as air filtration, movement, and pressure differentials to maintain a clean state, necessitating ongoing assessment through microbiological monitoring. Intelligent control systems for cleanroom environment detection offer visual display of monitoring data, enabling timely adjustments and warnings for staff in case of data abnormalities. GMP clean room environment monitoring management systems facilitate real-time analysis and prompt signaling of abnormal data, allowing for quick identification and correction of environmental conditions. Real-time monitoring systems for clean operating rooms incorporate comprehensive sensor arrays to ensure optimal environmental conditions, improving the scientific accuracy of data collection.
How does body height influence the techniques and strategies used in Muay Thai combat?
4 answers
Body height plays a significant role in influencing the techniques and strategies used in Muay Thai combat. Research shows that experienced Muay Thai fighters tend to be smaller in body height compared to students majoring in physical education, yet they exhibit better training and more muscle tissue. Additionally, Thai fighters, who are typically smaller in body height, utilize more attacking and defensive techniques such as knees, roundkicks to the body, and push kicks compared to UK fighters. This difference in technique selection based on body height is crucial in determining the effectiveness and balance of fighters during combat, as observed through the variations in technique frequency and key performance indicators between Thai and UK fighters.