scholarly journals Dream Machine

2007 ◽  
Vol 129 (06) ◽  
pp. 36-39
Author(s):  
Jeffrey Winters

This article discusses features of a high-efficiency car. The group setting up the contest, the X Prize Foundation, used a cash prize to lure a private company to launch its own space vehicle. Automakers have been better at producing high-efficiency concepts, such as the Chevy Volt than actual high-mileage cars. After the success of the Ansari X Prize, the directors of the X Prize Foundation looked for other fields in need of a push. In an era of rising gasoline prices and stagnant fuel efficiency marks, the idea of setting up a prize for a highly fuel-efficient vehicle was a natural. The contest tests vehicles on several factors, not just the single metric of fuel economy. The eventual winner of the Automotive X Prize will be much different. For starters, the car must meet federal safety standards and will be judged on physical attributes such as exterior styling, interior comfort, and the quality of the workmanship. According to the managers of the competition, the most important objective of the Automotive X Prize is to encourage not only the mainstream industry but also people on the periphery to really layout on the table some strong ideas.

Author(s):  
María- José Foncubierta-Rodriguez ◽  
Rafael Ravina-Ripoll ◽  
Eduardo Ahumada-Tello ◽  
Luis Bayardo Tobar-Pesantez

Since the end of the 20th century, economists have been attracted to the study of the economics of happiness (e.g., Singh, & Alexandrova, 2020; Crespo & Mesurado, 2015; Ferrer-i-Carbonell,2013). The use of the term happiness characterizes an essential volume of this bibliographical production as a synonym for the words satisfaction, well-being, or quality of life (Teixeira&Vasque, 2020; Carlquist et al., 2017). Under this umbrella, the culture of happiness management teaches us that a management model or direction oriented to the holistic search for happiness or job satisfaction of its employees is one of the essential axial pieces that organizations have to increase the commitment of their human capital, and therefore, their productivity and business performance (Ravina et al., 2019). Public administration employees are not exempt from this reality, a group that is characterized by job stability compared to private company employees. This article is dedicated to them. The era of Industry 4.0 is a period that is characterized, among other things, by the high precariousness of labor that is originated by the implementation of management models in advanced economies. This phenomenon is derived from the technological point of view by the automation and massive robotization of production processes and the supply chain. Together with the digitalization of companies, both factors are very present in the ecosystems of the Covid-19, and have come, perhaps, to stay in the future (Bragazzi, 2020; Ghadge et al., 2020). In line with the above, a more holistic examination of this issue seems likely to show that there is a keen interest among people to enter into Work mostly in public administrations, in search of a permanent contract for their entire working life. As is known, this is especially true in countries with high unemployment levels, such as Spain. Its unemployment rate is 20.1% in mid-2020. In the collective imagination of these individuals, there is the conviction that this type of Work constitutes ambrosia of eudaimonic happiness, job security, and quality of life, especially at present, in times of the Covid-19 pandemic (Fernández-Urbano, & Kulic, 2020). In this sense, it should be noted that in the last decades of the 21st century, there has been a growing interest in researching public employees' job satisfaction (e.g., Ryu&Bae, 2020; Steijn &Van der Voet, 2019; Luechinge et al., 2010). Most of the studies carried out on this scientific topic to date show empirically that public sector workers are happier than individuals in the private sphere. It's basically due to the intrinsic benefits (flexibility, vacation, or family reconciliation, among others) that this type of government entity offers concerning for-profit organizations (e.g., Lahat&Ofek, 2020; Sánchez-Sánchez, & Puente, 2020; Danzer,2019). In this context, this article aims to examine, as a priority in the era of Industry 4.0, whether there are observed differences in the levels of congratulations between human capital working in the private sector and that working in the public sector in Spain, by analyzing a set of variables that define positions: hours, salary, stability, promotion, and stress. Finally, we must indicate, on the one hand, that the choice of this spatial framework is motivated by the scarce literature investigating the happiness of Spanish public employees in an economy with high levels of youth unemployment (Núñez-Barriopedro et al., 2020). On the other hand, the results achieved in this study may be useful in the future for the implementation of public policies aimed at significantly promoting the welfare of working citizens through the happiness management approach (Ravina-Ripoll et al., 2019), or for taking this management concept to private companies to increase the motivation of their employees (Foncubierta-Rodríguez & Sánchez-Montero, 2019). Keywords: Happiness, human resources, Industry 4.0, public sector.


Author(s):  
Roberto Barcala-Furelos ◽  
Cristian Abelairas-Gómez ◽  
Alejandra Alonso-Calvete ◽  
Francisco Cano-Noguera ◽  
Aida Carballo-Fazanes ◽  
...  

Abstract Introduction: On-boat resuscitation can be applied by lifeguards in an inflatable rescue boat (IRB). Due to Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-COV-2) and recommendations for the use of personal protective equipment (PPE), prehospital care procedures need to be re-evaluated. The objective of this study was to determine how the use of PPE influences the amount of preparation time needed before beginning actual resuscitation and the quality of cardiopulmonary resuscitation (CPR; QCPR) on an IRB. Methods: Three CPR tests were performed by 14 lifeguards, in teams of two, wearing different PPE: (1) Basic PPE (B-PPE): gloves, a mask, and protective glasses; (2) Full PPE (F-PPE): B-PPE + a waterproof apron; and (3) Basic PPE + plastic blanket (B+PPE). On-boat resuscitation using a bag-valve-mask (BVM) and high efficiency particulate air (HEPA) filter was performed sailing at 20km/hour. Results: Using B-PPE takes less time and is significantly faster than F-PPE (B-PPE 17 [SD = 2] seconds versus F-PPE 69 [SD = 17] seconds; P = .001), and the use of B+PPE is slightly higher (B-PPE 17 [SD = 2] seconds versus B+PPE 34 [SD = 6] seconds; P = .002). The QCPR remained similar in all three scenarios (P >.05), reaching values over 79%. Conclusion: The use of PPE during on-board resuscitation is feasible and does not interfere with quality when performed by trained lifeguards. The use of a plastic blanket could be a quick and easy alternative to offer extra protection to lifeguards during CPR on an IRB.


Author(s):  
Nathan G. Johnson ◽  
Mark Bryden ◽  
Angran Xiao

Combustion of biomass in open fires and ad hoc unventilated stoves is the primary form of household energy for two to three billion people worldwide. These cookstoves have significant health, social, and economic impacts on poor families in developing countries. These impacts include disease, injury, excess time spent gathering fuel, deforestation, and high fuel costs relative to income. In an attempt to address many of these problems numerous non-governmental organizations have developed several biomass cookstove designs in the past five to ten years. These designs have generally focused on increasing fuel efficiency, and to a lesser degree, reducing particulate emissions. This emphasis has been driven largely by the availability of relatively straight forward fuel efficiency tests for biomass cookstoves developed 10–20 years ago and the ability of researchers to adapt current air pollution testing methods for stoves. In contrast there are no safety standards or hazard evaluations available for biomass cookstoves. Because of this the safety of the cookstove is seldom explicitly considered as a part of the design process. This paper addresses the basic safety issues that should be considered in the design of biomass stoves used in developing countries, describes the reasoning behind these safety issues, and proposes a set of safety guidelines for testing and evaluating stove safety. These guidelines are intended for testing and evaluating in the field as well as in the design lab.


Author(s):  
Anatoli A. Borissov ◽  
Alexander A. Borissov ◽  
Kenneth K. Kramer

Each year, the users in the U.S. alone spend over $100 billion on various type of engines to produce power — electrical, mechanical, and thermal. Despite technological advances, most all of these power generation systems have only been fine tuned: the engine efficiencies may have been improved slightly, but the underlying thermodynamic principles have not been modified to effect a drastic improvement. The result is that most engines in service today suffer from two major problems: low fuel efficiency and emission of high levels of polluting gases in the exhaust gases. The current state of propulsion engines or distributed generation technologies using heat engines shows an average efficiency of between 20% and 40%. These low efficiencies in a high–cost energy market indicate a great need for more efficient technologies. This paper describes a new method of achieving a very high efficiency, namely optimizing every stage of the thermodynamic process-Brayton cycle. Two modified processes, such as isothermal compression and recuperation, add about 35% efficiency to the conventional Brayton cycle, making 60% efficiency for modified Brayton cycle. By utilizing a positive displacement compressor and expander with a novel vortex combustion chamber and a vortex recuperator, high levels of efficiency with low emissions and noise are possible. The prototype engine with low RPM and high torque has been built which use continuous combustion of different fuels under a constant pressure. First results of the engine’s components testing are presented.


2013 ◽  
Vol 842 ◽  
pp. 634-638
Author(s):  
Yan Jing ◽  
Feng Zhao

By comparison, this paper determines inner bore processing technic program of the engineering machinery hydraulic cylinder block and makes some analysis of the rolling processing technic and relevant emerging issues to propose reasonable and feasible process route and process parameters and ensure the quality of the cylinder processing. It also shows the design of boring-rolling compound tools with high efficiency and high precision for given cylinders.


2014 ◽  
Vol 989-994 ◽  
pp. 1631-1634
Author(s):  
Ping Wang ◽  
Bin Wang

Product data is the source data of product lifecycle in manufacturing enterprise. The quality of product data largely determines the effect of the application of Engineering analysis, simulation assembly and CNC programming work and so on. In order to solve the problems of the existing product data quality, such as validation custom trival, lack of high efficiency and flexibility, etc. The validation method of product data quality (PDQ) based on class was proposed in NX software environment, the representation of validation rules classes of product data quality, validation rules customization and implementation of validation process were introduced in detail in this study. Finally, an application case was employed to verify the practicability and effectiveness of the proposed method.


2014 ◽  
Vol 08 (02) ◽  
pp. 229-243
Author(s):  
Sachin Deshpande

The newly approved High Efficiency Video Coding Standard (HEVC) includes temporal sub-layering feature, which provides temporal scalability. Two types of pictures — Temporal Sub-layer Access Pictures and Step-wise Temporal Sub-layer Access Pictures are provided for this purpose. This paper utilizes the temporal scalability in HEVC to provide bandwidth adaptive HTTP streaming. We describe our HTTP streaming algorithm, which is media timeline aware and which dynamically switches temporal sub-layers on the server side. We performed subjective tests to determine user perception regarding acceptable frame rates when using temporal scalability of HEVC. These results are used to control the algorithm's temporal switching behavior to provide a good quality of experience to the user. We applied Internet and 3GPP error-delay patterns to validate the performance of our algorithm.


2021 ◽  
Vol 15 (6) ◽  
pp. 95-100
Author(s):  
S. O. Salugina ◽  
E. S. Fedorov

Autoinflammatory diseases (AIDs) are a heterogeneous group of rare genetically determined conditions, the main manifestations of which are episodes of fever in combination with other signs of systemic inflammation: skin rashes, musculoskeletal and neurological disorders, damage to the organs of vision, hearing, etc., as well as acute phase markers and the absence of autoantibodies. The use of biological therapy, especially inhibitors of interleukin 1 (iIL1), in most common monogenic AIDs (mAID) – FMF, TRAPS, HIDS/MKD, CAPS – has shown its high efficiency and led to significant progress in the treatment of these patients. Currently, iIL1 are the first-line drugs for mAIDs therapy, primarily CAPS. In the case of their ineffectiveness or intolerance in certain situations, other biologic disease-modifying antirheumatic drugs can also be used – inhibitors of tumor necrosis factor α and iIL6, but this issue needs further investigation. The article describes a patient with mAID, in whom the diagnosis was made more than 40 years after the onset; administration of targeted therapy even in the late stages of the disease led to a significant improvement in many symptoms and quality of life. 


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Atie Rachmiatie ◽  
Fitri Rahmafitria ◽  
Karim Suryadi ◽  
Ajeng Ramadhita Larasati

Purpose The research aims to classify halal hotels based on Islamic values as embodied in both physical and non-physical attributes. Design/methodology/approach This study explores the perceived values of business owners of the halal hotels. Findings Perceptions of hotel owners are divided into three types: those who view the value of halal hotel only in terms of branding and attracting consumers; those who consider the ideology behind halal hotels based on strong Islamic values; and those who avoid halal branding but implement Islamic values in their hotels. For the hotel industry, halal certification is not a priority because a minimum effort at implementing halal standards can already attract Muslim customers. This case is especially true for countries where Muslims make up the majority of the population. Research limitations/implications This study was limited to a case study in Bandung and Bangkok as a representative of halal tourism in Asia. Hence, it could be extended by conducting comparative studies with other cities in Association of South East Asian Nation which already declare to develop halal tourism. Practical implications The findings of this research show that there is a large variety of halal hotel products, depending on the Islamic values upheld, which is causing difficulties for the government in creating standards. Then the result can help inform the government in establishing the strategic framework of halal tourism development, more particularly in the formulation of policy for industrial actors. Originality/value The findings contribute to the concept of product-centered business, in which it is generally assumed that industrial actors are frequently focused on the mere label of “halal” and ignore the true values. However, the research shows that some industrial actors put Islamic values first instead of the mere halal label, and another case shows that some of them implement Islamic values in their business but avoid halal branding. This empirical evidence shows that in halal hotels, the concept of product-centered is not always proper. The quality of halal hotel products depends on the Islamic value of the owner, not always influenced by business imperatives.


2017 ◽  
Vol 80 (3) ◽  
pp. 431-442 ◽  
Author(s):  
Xiao-Na Pang ◽  
Zhao-Jie Li ◽  
Jing-Yu Chen ◽  
Li-Juan Gao ◽  
Bei-Zhong Han

ABSTRACT Standards and regulations related to spirit drinks have been established by different countries and international organizations to ensure the safety and quality of spirits. Here, we introduce the principles of food safety and quality standards for alcoholic beverages and then compare the key indicators used in the distinct standards of the Codex Alimentarius Commission, the European Union, the People's Republic of China, the United States, Canada, and Australia. We also discuss in detail the “maximum level” of the following main contaminants of spirit drinks: methanol, higher alcohols, ethyl carbamate, hydrocyanic acid, heavy metals, mycotoxins, phthalates, and aldehydes. Furthermore, the control measures used for potential hazards are introduced. Harmonization of the current requirements based on comprehensive scope analysis and the risk assessment approach will enhance both the trade and quality of distilled spirits. This review article provides valuable information that will enable producers, traders, governments, and researchers to increase their knowledge of spirit drink safety requirements, control measures, and research trends.


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