scholarly journals ISABE and the 2017 symposium

2017 ◽  
Vol 121 (1242) ◽  
pp. 1029-1031
Author(s):  
F.A.E. Breugelmans
Keyword(s):  
Gas Turbine ◽  
Human Activities ◽  
High Technology ◽  
Environmental Benefits ◽  
Propulsion Systems ◽  
The World ◽  
Technology Investments

Propulsion systems have revolutionised human activities and made the world smaller. They have brought transport advances that enabled the conversion of dreams into reality. Very large international high-technology investments are being made to continue to develop efficient and affordable gas turbine and ramjet propulsion while implementing knowledge that is bringing large environmental benefits.

Advertising Efficacy Research on E-Paper Application for MRT Station Bulletin Board

2012 ◽  
Vol 262 ◽  
pp. 203-206
Author(s):  
Yung Cheng Hsieh ◽  
Yi Yeh Lee ◽  
Ssu Yi Cheng
Keyword(s):  
High Technology ◽  
Experimental Methods ◽  
Environmental Benefits ◽  
Bulletin Board ◽  
Competitive Advantages ◽  
Global Environmental ◽  
The World ◽  
Efficacy Research ◽  
Convenience Sampling

As global environmental consciousness emerges, use of high technology to reduce environmental pollution has become a critical imperative for economies the world over. In recent years’ development and applications of ICT monitors have increasingly served to displace traditional paper based displays, yielding tremendous environmental efficacy. Digital e-paper displays enjoy numerous competitive advantages including energy efficiency, eye friendliness, resilient durability, and readability, but are currently generally only deployed in e-book uses, so enhancing their application scope, in addition to relying on their reading comfort, the market will no doubt develop appreciable economic and environmental benefits. Hence this study deploys the perspective of applications innovation, to explore uses of e-paper solutions in MRT advertising contexts on the advertising efficacy aspects of both advertising memory and advertising attitudes. This research relies on in situ experimental methods, at an existing MRT station in Taipei on the island of Taiwan, through convenience sampling to select 100 study subjects, who were asked to view two encased displays (either a digital e-paper display or paper display) with public notice contents, prior to completing the study survey and statistical analysis of the valid responses. The study findings indicate that, for the general public MRT patrons, digital e-paper advertising solutions yielded optimal efficacy for both advertising memory and advertising attitude, with significant results along the dimensions of both advertising receptiveness and interest.

Beyond Technonationalism

2019 ◽  
Author(s):  
Kathryn C. Ibata-Arens
Keyword(s):  
Innovation Policy ◽  
High Technology ◽  
Entrepreneurial Activity ◽  
Asian Countries ◽  
Firm Creation ◽  
Biomedical Innovation ◽  
The World ◽  
Asian Economies ◽  
Biomedical Industry ◽  
Innovation And Entrepreneurship

What explains the rapid and sustained economic rise of Asian countries in high-technology industries, including biomedicals? The biomedical industry, comprised mainly of biopharmaceuticals and medical devices, is among the fastest growing globally and has been an economic-development target of national governments around the world. The book presents a conceptual framework to assess national government management of innovation and entrepreneurship in the fast-growing biomedical industry in Asia, which at current growth rates is on track to become the center of the world economy. Four Asian countries—China, India, Japan, and Singapore—are compared in terms of innovation capacities, government policy, and firm-level strategies underlying competitive advantages in high technology. The book argues that countries that pursue networked technonationalism have been effective in upgrading innovation capacity and also encouraging entrepreneurial activity in targeted industries. The study begins with a global-level analysis of biomedical innovation and entrepreneurship, identifying emerging concentrations of scientific citation, patenting, and firm creation—paying close attention to trends in Asian economies and future prospects. Findings indicate a gradual shift to Asian economies of many biomedical-innovation and new-business-creation activities. The book concludes with implications for innovation policy and entrepreneurship strategy in Asia and elsewhere.

scholarly journals Feasibility of a Helium Closed-Cycle Gas Turbine for UAV Propulsion

2020 ◽  
Vol 11 (1) ◽  
pp. 28
Author(s):  
Emmanuel O. Osigwe ◽  
Arnold Gad-Briggs ◽  
Theoklis Nikolaidis
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Pressure Ratio ◽  
Low Noise ◽  
Closed Cycle ◽  
Propulsion Systems ◽  
Component Design ◽  
Readiness Level ◽  
Aerial Vehicle ◽  
Turbine Design

When selecting a design for an unmanned aerial vehicle, the choice of the propulsion system is vital in terms of mission requirements, sustainability, usability, noise, controllability, reliability and technology readiness level (TRL). This study analyses the various propulsion systems used in unmanned aerial vehicles (UAVs), paying particular focus on the closed-cycle propulsion systems. The study also investigates the feasibility of using helium closed-cycle gas turbines for UAV propulsion, highlighting the merits and demerits of helium closed-cycle gas turbines. Some of the advantages mentioned include high payload, low noise and high altitude mission ability; while the major drawbacks include a heat sink, nuclear hazard radiation and the shield weight. A preliminary assessment of the cycle showed that a pressure ratio of 4, turbine entry temperature (TET) of 800 °C and mass flow of 50 kg/s could be used to achieve a lightweight helium closed-cycle gas turbine design for UAV mission considering component design constraints.

The Environmental Protection Consciousness and Countermeasures

2014 ◽  
Vol 962-965 ◽  
pp. 1509-1512
Author(s):  
Lin Liu ◽  
Pin Lv
Keyword(s):  
Economic Development ◽  
Environmental Protection ◽  
Natural Environment ◽  
Human Activities ◽  
Environmental Issues ◽  
The World ◽  
The Future ◽  
Environmental Concepts ◽  
Environment Sustainability ◽  
Development And Environment

There are various signs indicating that the Earth's natural environment is changing toward unfavorable direction for species, which is highly suspected to be connected with human activities. In the last century, people all over the world have realized the severity of environmental issues. In the long history, Chinese ancient had already development good rules and methods to reach balance between economic development and environment sustainability. This paper will discuss how environmental concepts forms and which methods could be applied in the future.

Sir Charles Parsons and Electrical Power Generation—a Turbine Designer's Perspective

1994 ◽  
Vol 208 (3) ◽  
pp. 159-176 ◽  
Author(s):  
J R Bolter
Keyword(s):  
Power Generation ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Electrical Power Generation ◽  
Analytical Methods ◽  
State Of The Art ◽  
Electrical Power ◽  
Turbine Generator ◽  
Current State ◽  
The World

Sir Charles Parsons died some three years after the author was born. In this paper the author looks back at the pioneering work of Parsons in the field of power generation. It shows how he was able to increase output of the steam turbine generator from 7.5 kW in 1884 to 50000 kW in 1930 while increasing efficiency from 1.6 to 36 per cent, and relates these achievements to the current state of the art. Blading design, rotor construction and other aspects of turbine engineering are considered. The conclusion is that Parsons and his associates charted the course which manufacturers and utilities throughout the world have continued to follow, although increasingly sophisticated design and analytical methods have succeeded the intuitive approach of Parsons. His constant search for improved efficiency was and is highly relevant to today's concern for the environment. Finally, although it did not become a practical proposition in his lifetime, the paper reviews Parsons' vision of, and continuing interest in, the gas turbine, first mentioned in his 1884 patents.

A One Dimensional, Time Dependent Inlet / Engine Numerical Simulation for Aircraft Propulsion Systems

1997 ◽  
Author(s):  
Doug Garrard ◽  
Milt Davis ◽  
Steve Wehofer ◽  
Gary Cole
Keyword(s):  
Numerical Simulation ◽  
Gas Turbine ◽  
High Frequency ◽  
Gas Turbine Engine ◽  
Simulation System ◽  
Time Dependent ◽  
Propulsion Systems ◽  
Turbine Engine ◽  
One Dimensional ◽  
Supersonic Inlet

The NASA Lewis Research Center (LeRC) and the Arnold Engineering Development Center (AEDC) have developed a closely coupled computer simulation system that provides a one dimensional, high frequency inlet / engine numerical simulation for aircraft propulsion systems. The simulation system, operating under the LeRC-developed Application Portable Parallel Library (APPL), closely coupled a supersonic inlet with a gas turbine engine. The supersonic inlet was modeled using the Large Perturbation Inlet (LAPIN) computer code, and the gas turbine engine was modeled using the Aerodynamic Turbine Engine Code (ATEC). Both LAPIN and ATEC provide a one dimensional, compressible, time dependent flow solution by solving the one dimensional Euler equations for the conservation of mass, momentum, and energy. Source terms are used to model features such as bleed flows, turbomachinery component characteristics, and inlet subsonic spillage while unstarted. High frequency events, such as compressor surge and inlet unstart, can be simulated with a high degree of fidelity. The simulation system was exercised using a supersonic inlet with sixty percent of the supersonic area contraction occurring internally, and a GE J85-13 turbojet engine.

The Fundamental Principles are vital to the unity of the International Red Cross and Red Crescent Movement

1990 ◽  
Vol 30 (275) ◽  
pp. 86-94
Author(s):  
János Hantos
Keyword(s):  
Human Activities ◽  
Human Values ◽  
Red Cross ◽  
Vital Force ◽  
The World ◽  
Historical Importance

The historical importance of the principles and ideals that influence human activities can be measured by their expansion, their impact and their duration.It is humanity's instinct for self-preservation that has made the International Red Cross and Red Crescent Movement what it is—a vital force that has for decades played a decisive part in enriching human values; after 125 years of life it has lost none of its attraction, its influence is widespread and its membership steadily growing. Unquestionably its influence extends throughout the world, even though its development is beset with difficulties.

scholarly journals Operating Experience With Gas-Turbine Ships of the Maritime Administration

1959 ◽  
Author(s):  
C. C. Tangerini ◽  
D. H. Specht
Keyword(s):  
Gas Turbine ◽  
Operating Experience ◽  
Operational Experience ◽  
Propulsion Systems ◽  
Free Piston ◽  
Actual Performance ◽  
Open Cycle

The two year operating results of the open cycle-gas turbine propulsion plant in the John Sergeant are given with reference to the actual performance, economy, and durability of the components of this marine drive. The operational records show that this type engine can compete favorably with conventional propulsion systems. Similarly, the operating results of the free piston gas-turbine propulsion plant in the William Patterson are given with limited operational experience at this time. The free-piston-installation operating record is submitted as preliminary.

scholarly journals Inlet Air Fogging of Marine Gas Turbine in Power Output Loss Compensation

2015 ◽  
Vol 22 (4) ◽  
pp. 53-58 ◽  
Author(s):  
Zygfryd Domachowski ◽  
Marek Dzida
Keyword(s):  
Gas Turbine ◽  
Power Output ◽  
Gas Turbines ◽  
Evaporative Cooling ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Output Loss ◽  
Direct Evaporative Cooling ◽  
Loss Compensation ◽  
The World

Abstract The use of inlet air fogging installation to boost the power for gas turbine engines is widely applied in the power generation sector. The application of fogging to mechanical drive is rarely considered in literature [1]. This paper will cover some considerations relating to its application for gas turbines in ship drive. There is an important evaporative cooling potential throughout the world, when the dynamic data is evaluated, based on an analysis of coincident wet and dry bulb information. This data will allow ships’ gas turbine operators to make an assessment of the economics of evaporative fogging. The paper represents an introduction to the methodology and data analysis to derive the direct evaporative cooling potential to be used in marine gas turbine power output loss compensation.

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