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How long does it take for a productive cough to go away? 

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The method provides a convenient means of reliable long-term follow-up of cough in clinical work and research.
It should be a useful tool to assess patients with cough in clinical trials and longitudinal studies.
Our findings indicate a high burden of chronic cough among adults with current cough in the community.

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How does signal distortion affect the performance of AI noise cancellation in wearable devices?
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Signal distortion, particularly in the context of active noise cancellation (ANC) in wearable devices, significantly impacts performance. Distortion, often overlooked as trivial, can lead to degradation or even divergence of the ANC controller. The distortion, especially in audio amplifiers, affects the convergence of algorithms like the filtered-x least mean square (FxLMS) in feedforward ANC systems, crucial for tonal noise cancellation. To address this, methods like using MEMS accelerometers for signal recovery have been proposed, where motion artifacts corrupt wearable sensor signals. By modeling signal corruption due to motion and employing noise cancellation techniques, such as adaptive noise cancelers, the performance of ANC in wearables can be enhanced, ensuring effective noise suppression despite signal distortions.
Purposeful and purposive sampling the same?
5 answers
"Purposeful sampling" and "purposive sampling" are often used interchangeably in research literature. Both terms refer to the intentional selection of samples based on specific criteria or purposes relevant to the study. Purposeful sampling involves selecting information-rich cases related to the phenomenon of interest, commonly used in qualitative research. It is emphasized that good sampling techniques are crucial for research design and interpretation, highlighting the importance of purposeful sampling strategies. Contrary to traditional beliefs that random sampling may introduce bias, recent studies suggest that both random and purposive sampling methods can generate consistent and unbiased estimators of population parameters. Therefore, while the terms may have slight nuances in specific contexts, they generally refer to the deliberate selection of samples based on defined criteria for research purposes.
What speech features can be reliably measured remotely?
5 answers
Remote measurement of speech features can be reliably achieved through various methods. Studies have shown that paralinguistic features, such as voice quality markers, can be effectively measured remotely using mobile devices in different acoustic environments. Additionally, advancements in technology, like Laser Doppler Vibrometers (LDVs), enable the accurate detection and reconstruction of speech signals remotely, even in noisy environments, by measuring small-scale vibrations and applying innovative algorithms for phase unwrapping and noise reduction. Furthermore, research focusing on neurodegenerative and psychiatric disorders highlights the feasibility of remotely collecting speech data using smartphone apps to profile speech characteristics, including acoustic and linguistic patterns, for early detection and intervention, showcasing the potential for reliable remote assessment of speech features across various health conditions.
What are the benefits of honey for soothing throat?
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Honey offers several benefits for soothing the throat. Studies have shown that honey can effectively reduce the frequency of cough in children with acute cough. Additionally, gargling with a solution containing honeysuckle and semen oroxyli has been found to relieve both resting and swallowing throat pain after Uvulopalatopharyngoplasty (UPPP). Furthermore, honey has been compared to diphenhydramine in nocturnal pediatric coughs, demonstrating superior effectiveness in improving various aspects of coughs and sleep quality in children and their parents. The therapeutic properties of honey, such as its antioxidant, anti-inflammatory, antimicrobial, and anticancer activities, contribute to its effectiveness in soothing the throat and providing relief from discomfort.
How does price affect guests revisit intention and satisfaction on service provided?
4 answers
Price plays a significant role in influencing guests' revisit intention and satisfaction with the service provided in the hospitality industry. Research indicates that perceived price fairness positively impacts customer satisfaction, leading to increased revisit intention. Additionally, compared to service quality, price has a stronger influence on customer satisfaction, ultimately affecting repurchase intention. Furthermore, in the context of airline services, price perception does not significantly impact repurchase intention, but service quality does positively influence it through customer satisfaction as an intervening variable. Moreover, in the hospitality sector, price, facilities, and service quality collectively have a positive impact on guests' intention to stay again, highlighting the importance of pricing strategies in enhancing revisit intentions.
What is the definition for active sampling in analytical chmistry?
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Active sampling in analytical chemistry refers to a strategic approach that involves iteratively selecting optimal subsamples for data collection based on machine learning predictions on unseen data. This method aims to overcome computational and economic constraints by improving the efficiency of parameter estimation in processes with shared and private parameters. It entails dynamic decision-making on which processes to sample, determining stopping criteria for data collection, and employing estimators for all parameters involved. By utilizing data-driven sampling decisions and conditional estimation cost functions, active sampling enables the sequential estimation of parameters with fewer samples while ensuring reliable estimates. This approach has shown significant performance enhancements compared to traditional sampling methods, particularly in scenarios like safety assessment of advanced driver assistance systems.
What are the most effective methods for assessing the impact of biodiversity conservation efforts?
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The most effective methods for assessing the impact of biodiversity conservation efforts involve enhancing biodiversity monitoring, utilizing modern tools like remote sensing and bioacoustics. Additionally, analyzing human-induced habitat quality changes can serve as a proxy for measuring the effectiveness of management efforts in biodiversity conservation. Monitoring biodiversity through various methods, such as roving surveys, belt transects, and citizen scientist-led surveys, can provide comparable measurements of species diversity and help in detecting changes in biodiversity effectively. Furthermore, considering counterfactuals in social-ecological systems can aid in evaluating the impact of conservation interventions by capturing the range of impact estimates associated with different actors, thus providing insights into the effectiveness of conservation measures.
What are the potential applications of traffic noise modeling using CRTN in urban planning and management?
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Traffic noise modeling using Continuous Road Traffic Noise (CRTN) can have significant applications in urban planning and management. By utilizing methodologies like machine learning techniques and sound propagation models, CRTN can help in city-wide road traffic noise indicator mapping, enabling the prediction of noise levels and events accurately. Additionally, the analysis of noise dispersion in different urban geometries can aid in evaluating parameters influencing noise trajectories and the effectiveness of mitigating measures. Moreover, incorporating deep learning models in noise mapping can enhance the accuracy of noise exposure maps, contributing to better urban noise control strategies. Furthermore, real-time traffic density monitoring and signal adjustment based on traffic conditions can optimize traffic flow and reduce congestion, benefiting urban mobility and overall quality of life.
Why is sampling resorted to in survey research?
4 answers
Sampling is utilized in survey research to efficiently study a subset of a population, enabling cost-effective and timely data collection while ensuring representativeness. By selecting a sample from a larger population, researchers can draw accurate inferences about the entire group. This method is crucial when studying attributes like disease prevalence, where studying the entire population is impractical. Sampling techniques, such as probability sampling, help control statistical properties of estimators, ensuring the findings are reliable and applicable to the broader population. Additionally, sampling allows for the integration of multiple data sources, enhancing the robustness and efficiency of inference in survey research.
What are the different types of sampling techniques used in research, and when is purposive sampling most appropriate?
4 answers
In research, various sampling techniques are employed, including probability and nonprobability methods. Probability sampling involves random selection, while nonprobability sampling lacks randomness. Sampling can be categorized as true-random, quasi-random, or nonrandom, rather than just random or nonrandom. Purposive sampling, a type of nonprobability sampling, is most suitable when researchers aim to select specific individuals or cases based on predefined criteria, maximizing the relevance of the sample to the research objectives. This method is particularly useful in qualitative research, case studies, or when studying rare populations where specific characteristics are essential for the study's focus. By intentionally selecting participants based on specific attributes, purposive sampling ensures that the sample aligns closely with the research goals, enhancing the depth and quality of the study's findings.
How to check my noise earbuds warranty?
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To check the warranty of your noise earbuds, you can utilize various methods outlined in the research papers. One approach involves an earphone online inspection method that automatically measures the sound quality and pressure of the earbuds using a measuring apparatus connected to the earphone mounting clamp. Additionally, a noise dosimeter with an earphone adapter can predict noise exposure over time and display accumulated noise doses, providing insights into the earbuds' performance. Furthermore, an earbud with a capacitive sensor can indicate proper insertion into the ear, ensuring functionality and potentially warranty coverage. By combining these methods, you can assess the condition and warranty status of your noise earbuds efficiently and effectively.