Search Results (8)

Long-term continuous and reliable real-time ocean wave height data are important for climatologists, offshore industries, leisure craft users, and marine forecasters. However, maintaining data continuity and reliability is challenging due to offshore equipment failures and sparse in situ observations. Opposing interactions between wind-driven ocean waves generate acoustic waves near the ocean surface, which can convert to seismic waves at the seafloor and travel through the Earth’s solid structure. These low-frequency seismic waves, known as secondary microseisms, are clearly recorded on terrestrial seismometers offering land-based access to ocean wave states via seismic ground vibrations. Here, we demonstrate the potential of this by estimating ocean Significant Wave Heights (SWHs) in the Northeast Atlantic using continuous recordings from a land-based seismic network in Ireland. Our method involves connecting secondary microseism amplitudes with the ocean waves that generate them, using an Artificial Neural Network (ANN) to quantify the relationship. Time series data of secondary microseism amplitudes together with buoy-derived and numerical model ocean significant wave heights are used to train and test the ANN. Application of the ANN to previously unseen data yields SWH estimates that closely match in situ buoy observations, located approximately 200 km offshore, Northwest of Ireland. Terrestrial seismic data are relatively cheap to acquire, with reliable weather-independent data streams. This suggests a pathway to a complementary, exceptionally cost-effective, data-driven approach for future operational applications in real-time SWH determination. Full article

Cultural heritage is a precious treasure left to mankind by history. With the development of the times and the improvement of people’s education, more and more people are becoming aware of the importance of protecting cultural heritage. Chinese porcelain inlay is a type of architectural decoration born out of the specific historical, geographical, and cultural conditions of Fujian and Guangdong, and was included in the second batch of The National List of Intangible Cultural Heritage of China published in 2008 and the third batch of The National List of Intangible Cultural Heritage of China—Expanded Projects in 2011. It represents an important part of the complex traditional culture of Fujian and Guangdong, acting as the essence of national culture, a symbol of national wisdom, and the refinement of national spirit. Using targeted analysis and making changes based on negative reviews, organizations that protect cultural heritage can improve their actions and find new ways to spread cultural heritage. The craft of Chinese porcelain inlay is used as an example in this paper. It combines Python Octopus crawler technology, data analysis, and sentiment analysis methods to perform a cognitive social media visualization analysis of Chinese porcelain inlay, which is a form of national intangible cultural heritage in China. Then, by looking at network text data from social media, it seeks to find out how the Chinese porcelain inlay culture is passed down, what its main traits are, and how people feel about it. Finally, this study summarizes the public’s understanding of inlay porcelain and proposes strategies to promote its future development and dissemination. This study found that (1) as a form of national intangible cultural heritage in China and a unique traditional architectural decoration craft, Chinese porcelain inlay has widely recognized cultural and artistic value. (2) The emotional evaluation of Chinese porcelain inlay is mainly positive (73 and 60.76%), while negative evaluations account for 12.62 and 20.79% of responses, mainly reflected in regret regarding the gradual disappearance of old buildings, the lament that Chinese porcelain inlay is highly regional and difficult to popularize, the regret that the individual has not visited locations with Chinese porcelain inlay, a feeling of helplessness with regard to inconvenient transportation links to these places, and discontent with the prohibitively high prices of Chinese porcelain inlay products. These findings offer valuable guidance for the future dissemination and development of Chinese porcelain inlay as a form of intangible cultural heritage. (3) The LDA topic model is used to divide the perception of Chinese porcelain inlay into nine major themes: arts and crafts, leisure and entertainment, cultural travel, online appreciation, heritage protection, dissemination scope, prayer and blessing, inheritance and innovation, and collection and research. This also provides a reference for the future direction of the inheritance of Chinese porcelain inlay cultural heritage. Full article

Remote work is becoming an inevitable practice in today’s business world which has transformed all business operations in times of COVID-19. This study aims to explore the roles of online time-spatial job crafting and leisure crafting for dealing with tele-pressure and techno-self-efficacy for improving remote work performance. Data are gathered through an online survey of 486 employees working in the IT sector of Pakistan and the partial least squares structural equation modeling (PLS-SEM) technique is used to analyze the hypothesis relationships. The results show that online job crafting and leisure crafting positively and significantly influence remote work performance. Moreover, findings indicate that tele-pressure partially mediates the relationship between online time job crafting and leisure crafting on remote work performance. Results also show that techno-self-efficacy positively moderates the relationship between online time job crafting and leisure crafting on tele-pressure. The findings provide insightful suggestions for building a collaborative remote workplace at the individual and collective level to implement job crafting interventions and enrich workers’ personal and organizational resources, which is helpful to cope with current challenges. Full article

Employees of all ages can proactively shape their behavior to manage modern work–life challenges more effectively and this is known as crafting. Our goal is to better understand employees’ motives for engaging in crafting efforts in different life domains to fulfil their psychological needs. In a survey study with two measurement waves, we examined whether “focus on opportunities at work” (FoO)—the extent to which employees believe in new goals and opportunities in their occupational future—and psychological needs (i.e., approach and avoidance needs)—predicted crafting efforts at work and outside work (i.e., job and off-job crafting). Our hypotheses were largely confirmed in a study on 346 Finnish workers. Greater FoO led to greater approach needs (i.e., mastery, meaning, affiliation), which in turn explained higher engagement in both job and off-job crafting. Avoidance needs (i.e., detachment, relaxation) resulted in increased crafting efforts in both life domains directly. Our findings underline the importance of FoO for crafting efforts across life domains, and explain why this is the case (i.e., it activates approach-oriented psychological needs). By supporting workers in shifting their focus onto their future opportunities (regardless of their age), organizations can create environments conducive to crafting and ultimately sustainable work lives. Full article

Originally designed as a mode of telecommunication, the network of French sémaphore is now dedicated to the continuous monitoring and recording of marine traffic along the entire French coast. Although the observation data collected by sémaphores cover 7/7 days and 24/24 h and could provide precious information regarding marine traffic, they remain underexploited. Indeed, these data concern all types of traffic, including leisure boating and smaller craft that are not usually recorded by the most common means of observation, such as AIS, radar and satellite. Based on sémaphore data, traffic pressure and its spatiotemporal distribution can be fully measured to better analyze its interactions with human activities and the environment. One drawback of these data is their initially semantic nature, which requires the development of an original processing method. The protocol developed to analyze the marine traffic of the Iroise Sea and its first results are presented in this article. It is based on a semi-automatic method aimed to clean the original data and quantify the marine traffic along synthetic routes. It includes a procedure that takes into account the temporal evolution of the traffic based on the Allen’s time framework. The results proved interesting as they provide an overview of marine traffic, including all types of vessels, and may be defined for different time periods and granularity. A description of the numerical and geographic instruments created is given; all the written code is released as Open Source software and freely available for download and testing. Full article

Current changes in social structures and political-economic systems directly affect teachers’ job performance. Among others, these changes include changes in communication and information technologies, the scientific revolution, changes in the structure of populations, the revolution of social relations, economic and political transformations, and revolutions in labor relations and leisure time. These changes all seem to have promoted educational revolutions, which encourage the development of autonomous individuals who are capable of making critical judgments, ready to dialogue and cooperate in problem solving, and who seek alternatives aimed at building a better society. Thus, teachers suffer daily from the impact of continual changes that affect the way they do their work. According to the job-demands resources model, each job environment has its own characteristics that can be grouped into two dimensions: job demands and job resources. However, the relationship between job demands and resources has serious implications for individuals’ lives and psychological well-being. While work provides us with the means to survive, develop social relationships, and experience control over our lives, an excess of demands and a shortage of resources to cope with them would adversely affect personal well-being. Hence, individuals can perform behaviors through job crafting to balance this relationship between demands and resources at work. Job crafting is a proactive behavior of the worker who improves his own working conditions in order to achieve a more meaningful and satisfactory job. This phenomenon allows individuals to play a certain role by “creating” their own job, changing the conditions in which they perform their tasks. In this study, 146 teachers participated to investigate the relationships between both individual and collaborative job crafting behaviors, on the one hand, and job satisfaction, work engagement, and teaching performance, on the other. Full article

A simulation model for a prismatic hard-chine planing hull watercraft (V-shaped keel with constant deadrise) with propulsion based on a 3-phase induction motor connected directly to surface-piercing propeller (SPP) and outfitted with a motor rotational speed controller was investigated, tested, and tuned. The modularity of the model developed enables straightforward substitution of diverse and more refined modules, or even attachment of additional ones to obtain greater level of detail or simulate more complicated processes. Industry trends do suggest an increasing interest in all-electric ship development as well as the use of surface-piercing propellers for small or medium-size craft. All-electric drive plants offer distinct advantages due to their flexibility in arrangements, ability to eliminate reduction gears in many cases, low maintenance requirements and wide range of available sizes as well superb load acceptance and dynamic matching to changing operational conditions. Employing electric drives onboard small craft with planing-hulls that achieve significantly higher velocities where arrangements and maneuverability are of critical design issues is a theme that has received increased attention by designers in recent years. Refined speed regulation and tracking compounded by the feature to produce fairly constant torque across a broad speed (rpm) range enables using of unconventional thrusters such as surface-piercing propellers to small craft. By investigating towing tank test data series for a surface-piercing propeller, development of a numerical simulation tool for unconventional thrusters was demonstrated. The surface-piercing propeller simulation model, as an artificial neural network (ANN), was coupled with a 3-phase induction motor as prime mover as well as dynamic propulsion shaft model and proportional-integral-differential (PID) controller. The various sub-models were finally integrated with a sub-model implementing Savitsky’s propulsion resistance method and calculation of equilibrium trim for planing hull modeling. Simulations were conducted using full-scale real-world conditions for a high-speed small craft developed for leisure and sporting activities, rapid close-range transit, reconnaissance and surveying etc. The planing-hull watercraft considered is amenable to minor hull modifications in order to house a 50 kW electric motor and a four bladed surface-piercing propeller. Simulations performed allowed a full assessment of model functionality as well as level of detail. Full article

Developed countries are experiencing high levels of mental and physical illness associated with long term health conditions, unhealthy lifestyles and an ageing population. Given the limited capacity of the formal health care sector to address these public health issues, attention is turning to the role of agencies active in civil society. This paper sought to evaluate the associations between participation in community centre activities, the psycho-social wellbeing and health related behaviours. This was based on an evaluation of the South West Well-being programme involving ten organisations delivering leisure, exercise, cooking, befriending, arts and crafts activities. The evaluation consisted of a before-and-after study with 687 adults. The results showed positive changes in self-reported general health, mental health, personal and social well-being. Positive changes were associated with diet and physical activity. Some activities were different in their outcomes—especially in cases where group activities were combined with one-to-one support. The results suggest that community centre activities of this nature offer benefits that are generically supportive of health behaviour changes. Such initiatives can perform an important role in supporting the health improvement objectives of formal health care services. For commissioners and partner agencies, accessibility and participation are attractive features that are particularly pertinent to the current public health context. Full article