Cohen, David J
Medical tourism is increasing owing to high costs of care, lack of availability or long waits for procedures, and improvements in technology and standards of care in many countries. Transplant tourism is one example of medical tourism that has been attracting increasing attention because of concerns over poor treatment and outcomes of both donors and recipients. Most such cases involve vended kidneys obtained from vulnerable populations, and both donors and recipients receive inferior care by US standards. This commentary discusses a paper by Gill et al. that compared outcomes of 33 transplant tourists with those of patients transplanted at a US center. Fewer complications and better outcomes were seen in patients transplanted in the US center than among transplant tourists. Large transplant centers with long waiting times are increasingly likely to see patients return newly transplanted from overseas; such patients require urgent attention, with particular consideration to infectious complications.
Akoh, Jacob A
Access to organ transplantation depends on national circumstances, and is partly determined by the cost of health care, availability of transplant services, the level of technical capacity and the availability of organs. Commercial transplantation is estimated to account for 5%-10% (3500-7000) of kidney transplants performed annually throughout the world. This review is to determine the state and outcome of renal transplantation associated with transplant tourism (TT) and the key challenges with such transplantation. The stakeholders of commercial transplantation include: patients on the waiting lists in developed countries or not on any list in developing countries; dialysis funding bodies; middlemen, hosting transplant centres; organ-exporting countries; and organ vendors. TT and commercial kidney transplants are associated with a high incidence of surgical complications, acute rejection and invasive infection which cause major morbidity and mortality. There are ethical and medical concerns regarding the management of recipients of organs from vendors. The growing demand for transplantation, the perceived failure of altruistic donation in providing enough organs has led to calls for a legalised market in organ procurement or regulated trial in incentives for donation. Developing transplant services worldwide has many benefits - improving results of transplantation as they would be performed legally, increasing the donor pool and making TT unnecessary. Meanwhile there is a need to re-examine intrinsic attitudes to TT bearing in mind the cultural and economic realities of globalisation. Perhaps the World Health Organization in conjunction with The Transplantation Society would set up a working party of stakeholders to study this matter in greater detail and make recommendations.
Okafor, U H
Transplant tourism entails movement of recipient, donor or both to a transplant centre outside their country of residence. This has been reported in many countries; and has variously been associated with organ trade. The objective of this study is to determine the frequency and pattern of transplant tourism among transplant patients in Eastern Nigeria. This is a non randomized cross sectional study. All kidney transplant patients who presented at Enugu State University Teaching Hospital Parklane Enugu and Hilton Clinics Port Harcourt in Nigeria were recruited. The clinical parameters including the transplant details of all the patients were documented. The data obtained was analysed using SPSS package. A total of one hundred and twenty six patients were studied, 76.2% were males with M:F ratio of 3.2:1 and mean age of 46.9 ± 13.3 years. Fifty four and 58.7% of the patients were managed in a tertiary hospital and by a nephrologist respectively before referral for kidney transplant. Only 15.8% of the patients had their kidney transplant without delay: finance, lack of donor, logistics including delay in obtaining travelling documents were the common causes of the delay. Ninety percent of the patients had their transplant in India with majority of them using commercial donors. India was also the country with cheapest cost ($18,000.00). 69.8% were unrelated donors, 68.2% were commercial donors and 1.6% of the donors were spouse. All the commercial donors received financial incentives and each commercial donor received mean of 7580 ± 1280 dollars. Also 30.2% of the related donors demanded financial incentive. Transplant tourism is prevalent in eastern Nigeria.
I. Al Salmi
Candida spp being isolated. A high index of suspicion might be the most reasonable means to reduce the possible very poor outcomes. Improving legal transplant programs and strengthening the associated laws could prevent commercial transplant tourism. Keywords: Invasive fungal infection, Renal transplant, Commercial transplant, Transplant tourism, Immunosuppression, Epidemiology
Ratkovic, M; Basic Jukic, N; Kastelan, Z; Radunovic, D; Kavaric, P; Brezak, J; Topalovic Grkovic, M; Hudolin, T; Prelevic, V
Organ transplantation has prolonged and improved the lives of many patients around the world. However, a widespread shortage of donors remains the main factor that has led to organ trafficking and transplant tourism. To stop transplant tourism and to provide optimal treatment for its citizens with end-stage renal disease, Montenegro started performing renal transplantations in September 2012. Thirty-five transplantations have been performed since that time, 34 from living donors and only 1 from a deceased donor. This practice has significantly decreased but not ended transplant tourism in Montenegro. Copyright © 2018 Elsevier Inc. All rights reserved.
Tsai, Meng-Kun; Yang, Ching-Yao; Lee, Chih-Yuan; Yeh, Chi-Chuan; Hu, Rey-Heng; Lee, Po-Huang
Despite the objections to transplant tourism raised by the transplant community, many patients continue travel to other countries to receive commercial transplants. To evaluate some long-term complications, we reviewed medical records of 215 Taiwanese patients (touring group) who received commercial cadaveric renal transplants in China and compared them with those of 321 transplant recipients receiving domestic cadaveric renal transplants (domestic group) over the same 20-year period. Ten years after transplant, the graft and patient survival rates of the touring group were 55 and 81.5%, respectively, compared with 60 and 89.3%, respectively, of the domestic group. The difference between the two groups was not statistically significant. The 10-year cumulative cancer incidence of the touring group (21.5%) was significantly higher than that of the domestic group (6.8%). Univariate and multivariate stepwise regression analyses (excluding time on immunosuppression, an uncontrollable factor) indicated that transplant tourism was associated with significantly higher cancer incidence. Older age at transplantation was associated with a significantly increased cancer risk; however, the risk of de novo malignancy significantly decreased with longer graft survival. Thus, renal transplant tourism may be associated with a higher risk of post-transplant malignancy, especially in patients of older age at transplantation. © 2011 International Society of Nephrology
Al Salmi, I; Metry, A M; Al Ismaili, F; Hola, A; Al Riyami, M; Khamis, F; Al-Abri, S
be the most reasonable means to reduce the possible very poor outcomes. Improving legal transplant programs and strengthening the associated laws could prevent commercial transplant tourism. Copyright © 2018 The Authors. Published by Elsevier Ltd.. All rights reserved.
Ambagtsheer, F.; Zaitch, D.; van Swaaningen, R.; Duijst, W.; Zuidema, W.; Weimar, W.
Background. Transplant tourism is a phenomenon where patients travel abroad to purchase organs for transplants. This paper presents the results of a fieldwork study by describing the experiences of Dutch transplant professionals confronted by patients who allegedly purchased kidney transplants
Adams, Marcus P
Organ tourism occurs when individuals in countries with existing organ transplant procedures, such as the United States, are unable to procure an organ by using those transplant procedures in enough time to save their life. In this paper, I am concerned with the following question: When organ tourists return to the United States and need another transplant, do US transplant physicians have an obligation to place them on a transplant list? I argue that transplant physicians have a duty not to relist organ tourists. Specifically, I contend that we should locate physicians' duties in these cases within the new role of "transplant physician." This role results from transplant physicians' participation in a system that depends on organ donors' voluntary act of donation. © The Author 2017. Published by Oxford University Press, on behalf of the Journal of Medicine and Philosophy Inc. All rights reserved. For permissions, please e-mail: firstname.lastname@example.org.
Bagheri, Alireza; Delmonico, Francis L
The increasing gap between organ supply and demand has opened the door for illegal organ sale, trafficking of human organs, tissues and cells, as well as transplant tourism. Currently, underprivileged and vulnerable populations in resource-poor countries are a major source of organs for rich patient-tourists who can afford to purchase organs at home or abroad. This paper presents a summary of international initiatives, such as World Health Organization's Principle Guidelines, The Declaration of Istanbul, Asian Task Force Recommendations, as well as UNESCO's and the United Nation's initiatives against trafficking of human organs, tissues, cells, and transplant tourism. Beyond the summary, it calls for more practical measures to be taken to implement the existing guidelines and recommendations, in order to prevent exploitation of the poor as organ providers. The paper suggests that an international legally binding agreement in criminalizing organ trafficking would be a step forward to bring a change in the global picture of organ trafficking and transplant tourism.
Gill, Jagbir; Diec, Olivier; Landsberg, David N; Rose, Caren; Johnston, Olwyn; Keown, Paul A; Gill, John S
Transplant tourism is a global issue, and physicians in the developed world may be in a position to actively deter this practice. To examine such opportunities, we identified 93 residents of British Columbia, Canada who had a kidney graft through tourism and determined their previous interactions with our transplant programs. These patients were mainly ethnic minorities (90%) who traveled to their country of origin for transplantation. Many tourists were transplanted early in their disease course, with 27 having a preemptive transplant. Among the 65 tourists referred for transplant, 33 failed to complete the evaluation. All tourists who completed an evaluation were placed on a waiting list in British Columbia and, after waiting a median of 2 years, pursued tourism. Most of these patients (62%) had a potential living donor, but none had an approved donor, with 13 donors found medically unsuitable, 8 ABO incompatible, and 12 who did not complete their evaluation. Thus, strategies to deter tourism should start before the development of end-stage renal disease and should be part of pretransplant workup and wait-list management, focusing on patients not progressing through their evaluation, those with a declined living donor, and those facing longer wait times, as these groups appear to be at higher risks for transplant tourism. Further studies are needed to identify individuals at risk for transplant tourism and to define effective strategies to deter these individuals.
Ambagtsheer, Frederike; Zaitch, Damián; van Swaaningen, René; Duijst, Wilma; Zuidema, Willij; Weimar, Willem
Background. Transplant tourism is a phenomenon where patients travel abroad to purchase organs for transplants. This paper presents the results of a fieldwork study by describing the experiences of Dutch transplant professionals confronted by patients who allegedly purchased kidney transplants abroad. Second, it addresses the legal definition and prohibition of transplant tourism under national and international law. The final part addresses the legal implications of transplant tourism for patients and physicians. Methods. The study involved seventeen interviews among transplant physicians, transplant coordinators and policy-experts and a review of national and international legislation that prohibit transplant tourism. Results. All Dutch transplant centers are confronted with patients who undergo transplants abroad. The estimated total number is four per year. Transplant tourism is not explicitly defined under national and international law. While the purchase of organs is almost universally prohibited, transplant tourism is hardly punishable because national laws generally do not apply to crimes committed abroad. Moreover, the purchase of organs (abroad) is almost impossible to prove. Conclusions. Transplant tourism is a legally complex phenomenon that warrants closer research and dialogue. The legal rights and obligations of patients and physicians confronted with transplant tourism should be clarified.
A Summit Meeting that convened over 150 representatives of scientific and medical bodies from around the world was held in Istanbul from April 30 to May 2, 2008 to address the urgent and growing problem of organ sales, transplant tourism and trafficking in organ donors in the context of the global shortage of organs. Preparatory work for the meeting was undertaken by a Steering Committee convened by The Transplantation Society and the International Society of Nephrology in Dubai in December 2007. Participants at the Istanbul Summit were selected by the Steering Committee according to the following criteria: The country liaisons with The Transplantation Society representing virtually all countries with transplantation programs; representatives from international societies and the Vatican; key stakeholders in nephrology and transplantation; public policy experts in organ transplantation; and ethicists, anthropologists, sociologists, and legal academic well-recognized for their work on transplantation policy and practice. This Declaration represents the consensus of the Summit participants and is an authorized Spanish translation that will help disseminate this information among Mexican health professionals and interested readers.
Intergovernmental agencies have recognized that inconsistencies in the way that nation states regulate commerce in human kidneys lubricate transplant tourism, and have repeatedly exhorted recalcitrant governments of both organ-importing and organ-exporting nations to criminalize the exchange of cash for kidneys. Yet these same organizations have elected to remain silent on inconsistencies in the regulation of the trade in human eggs that lubricate fertility tourism. This article is a critical feminist analysis of this paradox. Sketches of the histories of regulation of the global markets in human kidneys and human eggs allow attribution of the different approaches to sales of kidneys and eggs to the triumph of neo-liberalism in the 1990s. Neo-liberalism supports the growth of the medical tourism industry and its niche market catering for infertility, and is responsible for exacerbating the relative disadvantage of poor and powerless women in destination countries, thereby creating the conditions for 'bioavailability', that is, the willingness to exchange body parts for cash. The paper identifies a disturbing correlation between deeply engrained conservative attitudes to women and a plentiful supply of eggs, and concludes by suggesting that what women need to lift themselves out of poverty and discrimination is secure and dignified work. Copyright © 2011 Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.
Canales, Muna T; Kasiske, Bertram L; Rosenberg, Mark E
Although international commerce in kidney transplantation is a reality, little is known about U.S. residents who travel abroad for kidney transplantation. We retrospectively reviewed the clinical outcomes of patients who were evaluated at the University of Minnesota Medical Center or Hennepin County Medical Center, but then surreptitiously underwent kidney transplantation overseas. We identified 10 patients who underwent kidney transplantation outside the United States between September 16, 2002 and June 30, 2006 and then returned for care in our programs. Eight were transplanted in Pakistan (all Somali), one was transplanted in China (Chinese), and one was transplanted in Iran (Iranian). All but one had a living donor. Mean age was 36.8+/-12.5 years with median follow-up of 2.0 years (range 0.4-3.7). Three patients communicated their intent to travel abroad before transplantation. Induction immunosuppressive therapy (if any) was available in 3/10, and initial maintenance immunosuppression was known in 5/10. Complications were primarily infectious, with six potentially life-threatening infections in four patients. At last follow-up, mean serum creatinine was 1.13+/-0.34 mg/dL, acute rejection occurred in 2/10, 1/10 grafts failed due to acute rejection, and 9/10 patients were alive. Kidney function and graft survival were generally good after surreptitious overseas kidney transplantation. Major problems included incomplete perioperative information communicated to the posttransplant care facility and a high incidence of posttransplant infections. Longer follow-up and detailed cost analysis are needed to better understand the implications of the growing phenomenon of transplant tourism.
Anker, Ashley E; Feeley, Thomas H
A meta-analysis of odds ratios comparing the risks of participating in transplant tourism by acquiring a kidney abroad to the risks associated with domestic kidney transplant was undertaken. Comparison across 12 medical outcomes indicates transplant tourists are significantly more likely to contract cytomegalovirus, hepatitis B, HIV, post-transplantation diabetes mellitus, and wound infection than those receiving domestic kidney transplant. Results also indicate that domestic kidney transplant recipients experience significantly higher one-yr patient- and graft-survival rates. Analyses are supplemented by independent comparisons of outcomes and provide practitioners with weighted estimates of the proportion of transplant recipients experiencing 15 medical outcomes. Practitioners are encouraged to caution patients of the medical risks associated with transplant tourism. Despite the illegal and unethical nature of transplant tourism, additional efforts are indicated to eliminate the organ trade and to educate wait-listed patients about the risks of transplant tourism. © 2012 John Wiley & Sons A/S.
Evans, R W
Medical tourism has emerged as a global health care phenomenon, valued at $60 billion worldwide in 2006. Transplant tourism, unlike other more benign forms of medical tourism, has become a flashpoint within the transplant community, underscoring the uneasy relationships among science, religion, politics, ethics and international health care policies concerning the commercialization of transplantation. Numerous professional associations have drafted or issued position statements condemning transplant tourism. Often the criticism is misdirected. The real issue concerns both the source and circumstances surrounding the procurement of donor organs, including commercialization. Unfortunately, many of the position statements circulated to date represent an ethnocentric and decidedly western view of transplantation. As such, the merits of culturally insensitive policy statements issued by otherwise well-intended transplant professionals, and the organizations they represent, must be evaluated within the broader context of foreign relations and diplomacy, as well as cultural and ethical relativity. Having done so, many persons may find themselves reluctant to endorse statements that have produced a misleading social desirability bias, which, to a great extent, has impeded more thoughtful and inclusive deliberations on the issues. Therefore, instead of taking an official position on policy matters concerning the commercial aspects of transplantation, international professional associations should offer culturally respectful guidance.
Majid, Abdul; Al Khalidi, Lina; Ahmed, Bushra Q; Opelz, Gerhard; Schaefer, Franz
Transplant tourism is a necessity for children with end-stage renal disease living in regions without established local transplantation programs. The use of kidneys from living unrelated donors (LURDs) was common practice in Asia prior to the recent global condemnation of commercial organ transplantation. Objective information on the outcomes of pediatric transplant tourism is scarce. Here, we report the Dubai experience with 45 renal allograft transplantations performed outside the United Arab Emirates (UAE) between 1993 and 2009. Transplantation from 33 LURDs, ten living related donors (LRDs) and two deceased donors was performed in 14 different countries. The mean number of human leukocyte antigen (HLA) A/B/DR allele matches was 1.4 +/- 0.8 in the LURD graft recipients and 3.9 +/- 0.7 in the LRD recipients. Outcomes were compared with those of a matched group of 3,150 pediatric LRD transplantations from the Collaborative Transplant Study (CTS). Ten-year patient survival was 100% in the LRD patients, 91.2% in the LURD patients, and 92% in the CTS patients. The three deaths in the LURD group occurred within the first 4 months after transplantation and were related to acute rejection. One-year and 10-year graft survival was 100% in the LRD group and 94.8% and 66.7% in the CTS-LRD groups, vs 87.8% and 43.4% in the LURD group. Major viral infections [Epstein-Barr virus (EBV), cytomegalovirus (CMV), varicella zoster (VZV)] were four-times more common in patients that had received LURD grafts than in those that had received LRD grafts. In conclusion, whereas LRD kidney transplantation performed abroad yields excellent long-term results, transplantation of LURD kidneys is fraught with a high complication rate affecting graft and even early patient survival.
Tsai, Hsin-Lin; Chang, Jei-Wen; Wu, Tsai-Hun; King, Kuang-Liang; Yang, Ling-Yu; Chan, Yu-Jiun; Yang, An-Hang; Chang, Fu-Pang; Pan, Chin-Chen; Yang, Wu-Chang; Loong, Che-Chuan
To date, the outcomes of transplant tourism have not been reported extensively. In addition, data about the accuracy of urine cytology for the detection and the role of the BK virus (BKV) in the carcinogenesis of urothelial carcinoma (UC) after renal transplantation are lacking. Three hundred seven patients who received deceased donor kidney transplants between January 2003 and December 2009 were retrospectively studied. The clinical parameters and outcomes between the domestic and tourist groups were compared. We also investigated the risk factors and role of BKV in the carcinogenesis of de novo UC by quantitative real-time polymerase chain reaction. The subjects in the tourist group were older at transplantation and had a shorter dialysis time before transplantation. There were significantly higher incidence rates of BKV viruria, Pneumocystis jiroveci pneumonia, and malignancy in the tourist group. Graft and patient survival were superior in the domestic group. A total of 43 cancers were identified, and the most common type of malignancy was UC (23 patients, 53.5%). The tourist group had a significantly higher incidence of tumors. The sensitivity and specificity of urine cytology for detecting UC were 73.9% and 94.7%, respectively. Independent predictors of UC included female sex, use of Chinese herbal medicine, and transplant tourism. Only two patients (8.7%) with UC had detectable BKV. Transplant tourism was a risk factor for infection and de novo malignancy. Urothelial carcinoma was the most common malignancy after kidney transplantation. Regular screening for the early detection of UC by urine cytology or periodic sonographic surveys is mandatory, especially for those at high risk.
Padilla, Benita; Danovitch, Gabriel M; Lavee, Jacob
We describe the parallel changes that have taken place in recent years in two countries, Israel and The Philippines, the former once an "exporter" of transplant tourists and the latter once an "importer" of transplant tourists. These changes were in response to progressive legislation in both countries under the influence of the Declaration of Istanbul. The annual number of Israeli patients who underwent kidney transplantation abroad decreased from a peak of 155 in 2006 to an all-time low of 35 in 2011 while in the Philippines the annual number of foreign transplant recipients fell from 531 in 2007 to two in 2011. The experience of these two countries provides a "natural experiment" on the potential impact of legal measures to prevent transplant tourism.
Corfee, Floraidh Ar
Organ availability for transplantation has become an increasingly complex and difficult question in health economics and ethical practice. Advances in technology have seen prolonged life expectancy, and the global push for organs creates an ever-expanding gap between supply and demand, and a significant cost in bridging that gap. This article will examine the ethical implications for the nursing profession in regard to the procurement of organs from an impoverished seller's market, also known as 'Transplant Tourism'. This ethical dilemma concerns itself with resource allocation, informed consent and the concepts of egalitarianism and libertarianism. Transplant Tourism is an unacceptable trespass against human dignity and rights from both a nursing and collective viewpoint. Currently, the Australian Nursing and Midwifery Council, the Royal college of Nursing Australia, The Royal College of Nursing (UK) and the American Nurses Association do not have position statements on transplant tourism, and this diminishes us as a force for change. It diminishes our role as advocates for the most marginalised in our world to have access to care and to choice and excludes us from a very contemporary real debate about the mismatch of organ demand and supply in our own communities. As a profession, we must have a voice in health policy and human rights, and according to our Code of Ethics in Australia and around the world, act to promote and protect the fundamental human right to healthcare and dignity. © The Author(s) 2015.
Perrottet, John; Garcia, Andres F.
This is a background paper to the Pacific Possible report. For many Pacific Island countries, tourism is the main economic opportunity to generate incomes and jobs. This report suggests that increasing tourism demand in four areas could drive growth of tourism arrivals in the Pacific: Increasing demand from Chinese tourists, retired persons, high income individuals, and cruise ship operato...
Ababsa, Myriam; Crouzel, Isabelle; Neveu, Norig
The tourism sector accounted for 13% of GDP in 2010 and employs nearly a quarter of the workforce, placing Jordan just after Lebanon in tourism receipts as % of GDP, but far ahead of Morocco, Syria and Egypt (fig. VII.29). The bulk of tourism comes from the Arab world, mainly the Gulf, followed by Asia, Europe and the Americas (fig. VII.30). Out of the 9.5 million people who entered Jordan in 2009 (a figure that includes tourism, but also business tourism), 8 million people came from Arab cou...
Tsai, Daniel Fu-Chang; Huang, Shi-Wei; Holm, Soren; Lin, Yi-Ping; Chang, Yu-Kang; Hsu, Chih-Cheng
BACKGROUND: Transplant tourism has increased rapidly in the past two decades, accounting for about 10% of world organ transplants. However it is ethically controversial and discouraged by professional guidelines. We conducted this study to investigate the outcomes and trends of overseas kidney and liver transplantation in Taiwan to provide a sound basis for ethical reflection.METHODS AND FINDINGS: The Taiwanese National Health Insurance Research Database was used to identify 2381 domestic and...
Amira, C O; Bello, B T
Transplant tourism (TT) is the term used to describe travel outside one's country of abode for the sole purpose of obtaining organ transplantation services. This study describes the characteristics and outcomes of kidney transplant tourists who were followed up in our institution. A retrospective study was conducted on patients who underwent kidney transplantation outside the country and were followed up in our institution from 2007 to 2015. 26 patients were followed up; 19 (73%) were males. The mean±SD age of patients was 40.5±10.3 years. The majority (n=20) of the transplantations were carried out in India. Living-unrelated transplants were most common (54%). Complications encountered were infections in 11 (42%) patients, new-onset diabetes after transplantation in 9 (35%), chronic allograft nephropathy in 8 (31%), biopsy-proven acute rejections in 3 (12%), and primary non-function in 2 (8%). 1-year graft survival was 81% and 1-year patient survival was 85%. Kidney transplant tourism is still common among Nigerian patients with end-stage renal disease. Short-term graft and patient survival rates were poorer than values recommended for living kidney transplants. We therefore advise that TT should be discouraged in Nigeria, given the availability of transplantation services in the country, and also in line with international efforts to curb the practice.
White, Richard; Greenwood, Justine
Sydney has been shaped by tourism but in a large metropolis, where tourist experiences so often overlap with everyday activity, its impact often escapes attention. Urban tourism involves not just international visitors, but people from interstate and regional NSW and even day trippers, who all see and use the city differently. Tourist Sydney has never been the same as workaday Sydney – the harbour, beaches, city centre, the Blue Mountains and national parks to the north and south loomed dispr...
AlBugami, Meteb M; AlOtaibe, Fahad E; AlAbadi, Abdulnaser M; Hamawi, Khaled; Bel'eed-Akkari, Khalid
Transplant tourism (TT) violates many international laws and documents. Despite all efforts, TT seems to be increasing. The aim of this study is to review outcomes of recipients of commercially transplanted kidneys since the Declaration of Istanbul. All recipients of kidney transplantation done abroad and then returned to our center, from September 2008 to December 2015, were included (tourists). Demographics and outcomes were collected from patients' charts. All data were compared with all recipients of living donor kidney transplants done at our center (locals). A total of 86 tourists and 365 locals were included. Both groups had similar age and gender. Re-grafting rates were the same, however, more preemptive transplants were done abroad. TT was increasing over time. Tourists presented early after TT, median 17.5 (IQR 7 - 30) days, and 47.7% were encountered initially in the emergency department. 1-year graft and patient survivals were significantly lower among tourists compared with locals (87.2% vs. 98.0%, P<0.001 and 90.7% vs. 98.0%, P<0.001, respectively). Tourists had a significantly higher rate of acute cellular rejection (19.8% vs. 7.1%, P<0.001), and they sustained significantly higher rates of serious viral, bacterial and fungal infections compared with the locals. TT seems to be increasing despite international condemnation and efforts to stop it. Outcomes are significantly worse when compared to local transplant recipients. Concerted effort is needed to better inform patients about the ethical and physical harms related to TT, and to point them towards ethically sound and medically safer alternatives. This article is protected by copyright. All rights reserved.
Tsai, Daniel Fu-Chang; Huang, Shi-Wei; Holm, Soren; Lin, Yi-Ping; Chang, Yu-Kang; Hsu, Chih-Cheng
Transplant tourism has increased rapidly in the past two decades, accounting for about 10% of world organ transplants. However it is ethically controversial and discouraged by professional guidelines. We conducted this study to investigate the outcomes and trends of overseas kidney and liver transplantation in Taiwan to provide a sound basis for ethical reflection. The Taiwanese National Health Insurance Research Database was used to identify 2381 domestic and 2518 overseas kidney transplant (KT) recipients from 1998 to 2009 and 1758 domestic and 540 overseas liver transplantation (LT) recipients from 1999 to 2009. Cox proportional hazards models were used to assess the risks of mortality and graft failure. The numbers of overseas transplantation increased after 2000, reached a peak in 2005 and decreased after 2007. Compared to their domestic counterparts, the overseas KT recipients were older, male predominant, with shorter pre-op dialysis period and more comorbidities. Similarly, the overseas LT recipients were older, male predominant and had more hepatocellular carcinoma cases. The 1-, 5-, and 10-year patient survival rates were 96.9%, 91.7% and 83.0% respectively for domestic KT and 95.8%, 87.8% and 73.1% for overseas KT (ptourism decreased but the practice still persisted surreptitiously. Compulsory registration policies for overseas transplantation with international conventions to sanction organ trafficking and transplant tourism should be considered to stop these controversial practices.
Danovitch, Gabriel M; Chapman, Jeremy; Capron, Alexander M; Levin, Adeera; Abbud-Filho, Mario; Al Mousawi, Mustafa; Bennett, William; Budiani-Saberi, Debra; Couser, William; Dittmer, Ian; Jha, Vivek; Lavee, Jacob; Martin, Dominique; Masri, Marwan; Naicker, Saraladevi; Takahara, Shiro; Tibell, Annika; Shaheen, Faissal; Anantharaman, Vathsala; Delmonico, Francis L
By 2005, human organ trafficking, commercialization, and transplant tourism had become a prominent and pervasive influence on transplantation therapy. The most common source of organs was impoverished people in India, Pakistan, Egypt, and the Philippines, deceased organ donors in Colombia, and executed prisoners in China. In response, in May 2008, The Transplantation Society and the International Society of Nephrology developed the Declaration of Istanbul on Organ Trafficking and Transplant Tourism consisting of a preamble, a set of principles, and a series of proposals. Promulgation of the Declaration of Istanbul and the formation of the Declaration of Istanbul Custodian Group to promote and uphold its principles have demonstrated that concerted, strategic, collaborative, and persistent actions by professionals can deliver tangible changes. Over the past 5 years, the Declaration of Istanbul Custodian Group organized and encouraged cooperation among professional bodies and relevant international, regional, and national governmental organizations, which has produced significant progress in combating organ trafficking and transplant tourism around the world. At a fifth anniversary meeting in Qatar in April 2013, the DICG took note of this progress and set forth in a Communiqué a number of specific activities and resolved to further engage groups from many sectors in working toward the Declaration's objectives.
This work discusses product basics, machine elements that require lubrication, methods of application, lubricant storage and handling, and lubricant conservation. This edition emphasizes the need for lubrication and careful lubricant selection.
This book is organized under the following headings: lubricating oils; lubricating greases; synthetic lubricants; machine elements; lubricant application; internal combustion engines; stationary gas turbines; steam turbines; hydraulic turbines; nuclear power plants; automotive chassis components; automotive power transmissions; compressors; handling, storing, and dispensing lubricants, in-plant handling for lubricant conservation
Budiani-Saberi, D A; Delmonico, F L
The extent of organ sales from commercial living donors (CLDs) or vendors has now become evident. At the Second Global Consultation on Human Transplantation of the World Health Organization's (WHO) in March 2007, it was estimated that organ trafficking accounts for 5-10% of the kidney transplants performed annually throughout the world. Patients with sufficient resources in need of organs may travel from one country to another to purchase a kidney (or liver) mainly from a poor person. Transplant centers in 'destination' countries have been well known to encourage the sale of organs to 'tourist' recipients from the 'client' countries.
Biggins, Scott W; Bambha, Kiran; Terrault, Norah; Inadomi, John; Roberts, John P; Bass, Nathan
Organ procurement in China has been criticized because of its reliance on executed prisoners as donors. We aimed to assess the influence of perceptions about organ procurement practices in China on domestic patient-care decisions. An anonymous internet administered case-based questionnaire was used to survey a sample of healthcare professionals with affiliations to hepatology and transplantation professional societies. Of 674 completed surveys, the vast majority (93%) of the respondents were physicians, surgeons or allied transplant professionals actively caring for liver transplant patients and 81% practiced in the US. A strong majority believed procurement practices were ethically sound in the US and Europe (87% and 73%) but fare fewer believed that procurement practices were ethically sound in China (4%, p < 0.001). In case-based questions, lack of confidence in the ethical standards of organ procurement in China predicted patient-care decisions. The majority would provide post-transplantation care for patients who underwent liver transplantation at another domestic center, in a foreign country and in China (90%, 78%, and 63%, respectively, p < 0.001) yet respondents who suspected unethical procurement practices in China were more reluctant to do so (p < 0.001). Transplant professionals expressed concern about organ procurement practices in China which influenced their patient-care decision-making.
Biggins, Scott W.; Bambha, Kiran; Terrault, Norah; Inadomi, John; Roberts, John P.; Bass, Nathan
Organ procurement in China has been criticized because of its reliance on executed prisoners as donors. We aimed to assess the influence of perceptions about organ procurement practices in China on domestic patient care decisions. Methods An anonymous Internet administered case-based questionnaire was used to survey an sample of healthcare professionals with affiliations to hepatology and transplantation professional societies. Results Of 674 completed surveys, the vast majority (93%) of the respondents were physicians, surgeons or allied transplant professionals actively caring for liver transplant patients and 81% practiced in the United States (US). A strong majority believed procurement practices were ethically sound in the US and Europe (87% and 73%) but fare fewer believed that procurement practices were ethically sound in China (4%, pethical standards of organ procurement in China predicted patient-care decisions. The majority would provide post-transplantation care for patients who underwent liver transplantation at another domestic center, in a foreign country and in China (90%,78%,63%, respectively, pprocurement practices in China were more reluctant to do so (pprocurement practices in China which influenced their patient care decision-making. PMID:19191815
Lansdown, A R
Lubrication: A Practical Guide to Lubricant Selection provides a guide to modern lubrication practice in industry, with emphasis on practical application, selection of lubricants, and significant factors that determine suitability of a lubricant for a specific application. Organized into 13 chapters, this book begins with a brief theoretical opening chapter on the basic principles of lubrication. A chapter then explains the choice of lubricant type, indicating how to decide whether to use oil, grease, dry lubricant, or gas lubrication. Subsequent chapters deal with detailed selection of lubric
Full Text Available During breathing, the pleural surfaces slide against each other continuously without damage. Pleural liquid and lubricating molecules should provide the lubrication of the sliding surfaces, thus protecting the mesothelium from shear-induced abrasion. D’Angelo et al. (Respir. Physiol. Neurobiol. 2004 measured the coefficient of kinetic friction (μ of rabbit parietal pleura sliding against visceral pleura in vitro at physiological velocities and under physiological loads; it was ~0.02 and did not change with sliding velocity, consistent with boundary lubrication. μ in boundary lubrication can be influenced by surface molecules like hyaluronan, sialomucin or surface active phospholipidis. Hyaluronan or sialomucin is able to restore good boundary lubrication in damaged mesothelium. Nevertheless, hyaluronidase and neuraminidase treatment of the mesothelium does not increase μ, though neuraminidase cleaves sialic acid from the mesothelium. Short pronase or phospholipase treatment, so as to affect only the mesothelial glycocalyx, increases μ, and this increase is removed by hyaluronan or sialomucin. On the other hand, addition of phospholipids after phospholipase treatment produces a small effect relative to that of hyaluronan or sialomucin, and this effect is similar with unsaturated or saturated phospholipids. In damaged mesothelium, the lubrication regimen becomes mixed, but addition of hyaluronan or sialomucin restores boundary lubrication.
Srivastava, S P
Provides a fundamental understanding of lubricants and lubricant technology including emerging lubricants such as synthetic and environmentally friendly lubricants Teaches the reader to understand the role of technology involved in the manufacture of lubricants Details both major industrial oils and automotive oils for various engines Covers emerging lubricant technology such as synthetic and environmentally friendly lubricants Discusses lubricant blending technology, storage, re-refining and condition monitoring of lubricant in equipment
Home; Journals; Resonance – Journal of Science Education; Volume 1; Issue 9. Hydrodynamic Lubrication Experiment with 'Floating' Drops. Jaywant H Arakeri K R Sreenivas. General Article Volume 1 Issue 9 September 1996 pp 51-58. Fulltext. Click here to view fulltext PDF. Permanent link:
Parfenova, V.A.; Belov, P.S.; Guliaev, I.A.; Korenev, K.D.
For the purpose of improving the thermo-oxidation stability of washing and protective properties, dithiophosphate of the metal having the formula ((pi-R-C/sub 6/H/sub 4/OCH/sub 2/-CH/sub 2/O)/sub 2/P(=S)S)/sub 2/M (where R is the alkyl of C/sub 8/--C/sub 12/ isostructure, M is either cadmium, barium, or zinc) (I) is added into the petroleum oil for the lubrication of car engine units and containing polyethylene oxyphenylpolyamine (PEP). The lubricant has the following composition, in %: PEP, 1 to 5; (I), 0.5 to 5; petroleum oil, up to 100. In order to produce a lubricant for petroleum oil, for example MT-16, PEF and (I) are added (R = octyl or dodecyl), it is heated up to 80/sup 0/ and mixed in a nitrogen current for one hour. The combination of the additives in the patented composition has synergistic activities and the oil being patented, according to operative properties, surpasses the oil with industrial dithiophosphate additive MNI-IP-22k.
Braithwaite, E R
Solid Lubricants and Surfaces deals with the theory and use of solid lubricants, particularly in colloidal form. Portions of this book are devoted to graphite and molybdenum disulfides, which are widely used solid lubricants in colloidal form. An extensive literature on the laboratory examination of hundreds of solids as potential lubricants is also provided in this text. Other topics discussed include the metals and solid lubricants; techniques for examining surfaces; other solid lubricants; metal shaping; and industrial uses of solid-lubricant dispersions. This publication is beneficial to e
stage ... renal artery thrombosis, renal vein thrombosis, ureteric leak or stenosis ... alternative organ source for patients with end-stage renal disease. Kidney ... status.27,28 Post-transplant acute tubular necrosis is caused by ischaemic injury to the ...
Skotheim, Jan; Mahadevan, Laksminarayanan
We study the lubrication of fluid-immersed soft interfaces and show that elastic deformation couples tangential and normal forces and thus generates lift. We consider materials that deform easily, due to either geometry (e.g a shell) or constitutive properties (e.g. a gel or a rubber), so that the effects of pressure and temperature on the fluid properties may be neglected. Four different system geometries are considered: a rigid cylinder moving tangentially to a soft layer coating a rigid substrate; a soft cylinder moving tangentially to a rigid substrate; a cylindrical shell moving tangentially to a rigid substrate; and finally a journal bearing coated with a thin soft layer, which being a conforming contact allows us to gauge the influence of contact geometry. In addition, for the particular case of a soft layer coating a rigid substrate we consider both elastic and poroelastic material responses. Finally, we consider the role of contact geometry in the context of the journal bearing, a conforming contact. For all these cases we find the same generic behavior: there is an optimal combination of geometric and material parameters that maximizes the dimensionless normal force as a function of the softness.
Dowson, D; Hopkins, D W
Elasto-Hydrodynamic Lubrication deals with the mechanism of elasto-hydrodynamic lubrication, that is, the lubrication regime in operation over the small areas where machine components are in nominal point or line contact. The lubrication of rigid contacts is discussed, along with the effects of high pressure on the lubricant and bounding solids. The governing equations for the solution of elasto-hydrodynamic problems are presented.Comprised of 13 chapters, this volume begins with an overview of elasto-hydrodynamic lubrication and representation of contacts by cylinders, followed by a discussio
Green tourism is defined as environmentally friendly tourism activities with various focuses and meanings. In a broad term, green tourism is about being an environmentally friendly tourist or providing environmentally friendly tourist services. The green tourism concept would be highly appealing to tourism enterprises and operators owing to increasing governmental pressure to improve environmental performance by adopting effective and tangible environmental management techniques. Green to...
Sep 25, 2012 ... lubricating oil, showed high biodegradation efficiency for different used lubricating oils. Capability of ..... amount after biodegradation showed no difference in the .... products polluted sites in Elele, Rivers State, Ngeria.
Frantál, B. (Bohumil)
The chapter provides a general definition of energy and resume the role and environmental impacts of tourism as one of the largest global industries and energy consumers.Then the energy tourism nexus is conceptualized from three perspectives: The first is energy as a driver of tourism. The second is energy as a constraint of tourism. The third is energy as an attraction and object of tourists´interests.
North Carolina State Dept. of Public Instruction, Raleigh. Div. of Vocational Education.
This document contains teacher materials for a 6-unit, 1-year distributive education course in marketing tourism offered in grades 11 and 12 in North Carolina. Although in general the material presented concerns marketing tourism anywhere, some of it is specifically related to tourism within North Carolina. A purpose statement explains the…
Alina Badulescu; Olimpia Ban
The first part of the paper presents the past and present of the religious tourism in the world and in Romania and its implications on traveling. The second part describes the regions with religious tourism potential in Romania and the activities that could enhance and help the development of this kind of tourism in our country.
This thesis is focused on the variability of the demand and the development of new trends in the fields of the tourism industry. Special attention is devoted to a new arising trend of the Dark Tourism. This trend has appeared in the end of the 20th century and it has gained the attraction of media, tourists, tourism specialists and other stakeholders. First part of the thesis is concerned with the variety of the tourism industry and the ethic question of the tourism development. The other par...
Ren, Carina Bregnholm; Chimirri, Daniela
In Greenland, politicians and businesses are hoping and planning for substantial growth in tourism. As the construction of three transatlantic airports draws closer, a broader societal discussion of how (much) tourism should be developed, in what ways, and by whom, is lacking. In this article, we...... show how tourism practitioners in Greenland perceive the challenges and potential posed by tourism and discuss how its development could be linked to other spheres of society—turning tourism from an industry into a potential catalyst for social change....
Blichfeldt, Bodil Stilling; Nielsen, Niels Christian; Just, Flemming
This paper draws on a study of one specific type of small tourism enterprises (i.e. farm tourism enterprises) and argues that these enterprises differ from other enterprises in relation to a series of issues other than merely size. The analysis shows that enterprises such as these are characterized......, our study suggests that it is problematic to threat farm tourism enterprises as if they have much in common with both larger corporations and other types of SMTEs. Farm tourism enterprises seem to differ significantly from other enterprises as the hosts are not in the tourism business because...
Lugt, Piet M
The definitive book on the science of grease lubrication for roller and needle bearings in industrial and vehicle engineering. Grease Lubrication in Rolling Bearings provides an overview of the existing knowledge on the various aspects of grease lubrication (including lubrication systems) and the state of the art models that exist today. The book reviews the physical and chemical aspects of grease lubrication, primarily directed towards lubrication of rolling bearings. The first part of the book covers grease composition, properties and rheology, including thermal
Falk, Lars; Justenlund, Anders
This encyclopedia is the most comprehensive and updated source of reference in tourism research and practice. It covers both traditional and emerging concepts and terms and is fully international in its scope. More than 800 contributions of over 200 internationally renowned experts provide...... a definitive access to the knowledge in the field of tourism, hospitality, recreation and related fields. All actors in this field will find reliable and up to date definitions and explanations of the key terms of tourism in this reference work. Tourism is the largest industry worldwide and is the main source...... of income for many countries. With both, this practical impact of tourism and a rapidly developing academic field, with a growing number of university courses and degrees in tourism, and a flourishing research, this encyclopedia is the epicenter of this emerging and developing discipline....
Full Text Available In this paper we will try to analyse the cultural tourism. We will start by referring to the complex concepts of tourism and culture and to the synergies existing between them. We will define cultural tourism and present its appearance and evolution as well as its importance as a modern form of tourism. We will present the various types of cultural tourism with their characteristics and the specific features of cultural tourists according to their interests. We will also mention that there are advantages and disadvantages for any kind of tourism depending on the position – local communities, companies or tourists. For the future we will refer to the new partnership between UNWTO and UNESCO.
Abbas Ghanbari; Khadijeh Zirak Moradlu; Morteza Ramazani
Medical tourism is considered as one of the tourism dimensions and it can contribute to the stabilized and dynamic development of a country's economy. Since it is cost-effective industry, most developing countries have focused on this industry and they are planning to develop this industry. Not only does Zanjan province, as the central region in medicine services, enjoy different kinds of variety and acceptable medical specialties but also it has historical, natural, and religious tourism pot...
Proposes that tourism should be part of the environmental education curriculum. Discusses the significance of tourism, the impacts of tourism on the environment, the concept of sustainable tourism, and tourism in education in the United Kingdom. (MDH)
Lubrication is essential in most metal forming processes. The lubricant film has two basic functions, : i. to separate the work piece and tool surfaces and ii. to cool the workpiece and the tool. Separation of the two surfaces implies lower friction facilitating deformation and lowering the tool...
In a combustion turbine engine comprising a bearing member journaling a rotatable component, and compressor means providing pressurized air, the method of providing liquid lubricant to the bearing member is described comprising the steps of: providing the liquid lubricant sealed within a collapsible and penetrable bladder member; enclosing the bladder member and lubricant within a substantially closed housing sealingly cooperating with the bladder member to define a pair of chambers; arranging a penetrating lance member in one of the pair of chambers in confronting relationship with the bladder member; providing communication of the pressurized air with the other of the pair of chambers to force the bladder member into impaled sealing relationship with the lance member; communicating the lubricant to the bearing member via the lance member; and utilizing the pressurized air within the other chamber to collapse the bladder member, simultaneously flowing the lubricant to the bearing member.
Full Text Available Medical tourism is considered as one of the tourism dimensions and it can contribute to the stabilized and dynamic development of a country's economy. Since it is cost-effective industry, most developing countries have focused on this industry and they are planning to develop this industry. Not only does Zanjan province, as the central region in medicine services, enjoy different kinds of variety and acceptable medical specialties but also it has historical, natural, and religious tourism potentials. In this survey, the researcher investigated the existing potentials of Zanjan province based on descriptive - analytical tourism in offering and providing medical services and accommodation. The survey reports that offered services in tourism were not acceptable and satisfactory.
Ion-Danut JUGANARU; Mariana JUGANARU; Andreea ANGHEL
Tourism development must be based on sustainability criteria, be long term bearable economically and ethically and socially equitable for the local populations of the destinations. Tourism forms identified by the literature as being “sustainable” are numerous: ecological tourism (ecotourism), green tourism, soft, rural tourism and agrotourism, community tourism, solidarity and responsible tourism, all these opposing to the traditional, mass tourism. According to some specialists only tourism ...
Now completely revised and updated, this definitive, hands-on reference provides a comprehensive resource on the fundamental principles of lubricant application, what products are available, and which lubricants are most effective for specific applications. It also offers a detailed and highly practical discussion of lubrication delivery systems. You'll gain a clearer understanding of the "why" of relevant industrial lubrication practices, and, importantly, how these practices will facilitate optimized results. Lubricant applications covered include bearings and machine elements in earthbound
Presenting a comprehensive and dynamic understanding of cultural tourism, this volume examines cultural mediators and how they help tourists appreciate foreign cultures. It also shows how tourism experiences are strategically crafted by mediators, the complexity of the mediation process, and how...... various products are mediated differently. A number of different products are investigated, including destination brand identities, "living" cultures and everyday life, art and history. The author illustrates his arguments by comparing the tourism strategies of Copenhagen and Singapore, and demonstrates...... how tourism is an agent for social change. The author also offers an original and refreshing way of understanding tourist behaviour through the concept of the "versatile tourist". The book's empirical cases and dialogic framework provide new and deep insights into tourism activities. In his...
Federal Laboratory Consortium — Modern naval aircraft and turbine-powered craft require reliable and high-quality fuels and lubricants to satisfy the demands imposed upon them for top performance...
Arnt Nielsen, Peter
Libel tourism, which is much related to the UK, is caused by a mixture of factors, such as the law applicable, national and European rules of jurisdiction, national choice of law rules, and case law of the CJEU. These issues as well as aspects of recognition and enforcement of libel judgments...... in the US and EU are examined. Proposals for reform and legislative action in the EU are made. The effect of the Defamation Act 2013 on libel tourism, in which the UK attempts to strike a better balance between freedom of expression and privacy and to deal with libel tourism, is examined....
Wright, V; Dowson, D
Mechanisms of lubrication of human synovial joints have been analysed in terms of the operating conditions of the joint, the synovial fluid and articular cartilage. In the hip and knee during a walking cycle the load may rise up to four times body weight. In the knee on dropping one metre the load may go up to 25 time body weight. The elastic modulus of cartilage is similar to that of the synthetic rubber of a car tyre. The cartilage surface is rough and in elderly specimens the centre line average is 2-75 mum. The friction force generated in reciprocating tests shows that both cartilage and synovial fluid are important in lubrication. The viscosity-shear rate relationships of normal synovial fluid show that it is non-Newtonian. Osteoarthrosic fluid is less so and rheumatoid fluid is more nearly Newtonian. Experiments with hip joints in a pendulum machine show that fluid film lubrication obtains at some phases of joint action. Boundary lubrication prevails under certain conditions and has been examined with a reciprocating friction machine. Digestion of hyaluronate does not alter the boundary lubrication, but trypsin digestion does. Surface active substances (lauryl sulphate and cetyl 3-ammonium bromide) give a lubricating ability similar to that of synovial fluid. The effectiveness of the two substances varies with pH.
In a rapidly changing tourism industry, the international competition is strong and the well-travelled tourists have high expectations. This has led to an increasing emphasis on the development of new services and experiences to attract tourists’ attention. Innovation has become a “buzz-word”, seen...... as essential for survival and growth. With cases from Norway and NZ this thesis examines what innovation means in the context of adventure tourism businesses, and explore relations between such change processes and the available knowledge resources of the business. Several factors influence the knowledge...... resources of a given business, and this study looks specifically at how the size of the business, its location, and the maturity of the specific adventure tourism activity shapes processes of knowledge development and innovation. The study takes it starting point in research on small businesses and tourism...
Full Text Available Reviewed: Mountaineering Tourism Edited by Ghazali Musa, James Higham, and Anna Thompson-Carr. Abingdon, United Kingdom: Routledge, 2015. xxvi + 358 pp. Hardcover. US$ 145.00. ISBN 978-1-138-78237-2.
The spectacular increase in tourism in the Alps in recent decades has been founded mainly on the boom in skiing, resulting in both strong real estate development and an increasing array of infrastructures and ski runs. Today the ski market seems to have virtually reached saturation point and the winter sports sector needs to diversify its offer through innovation. After a review of the main factors of change in mountain tourism, the paper presents a grid for interpreting the life cycle of alp...
Liew Yun Hsien, Willey
The book gives an overview of environmental friendly gaseous and vapour, refrigerated compressed gas, solid lubricant, mist lubrication, minimum quantity lubrication (MQL) and vegetable oils that can be used as lubricants and additives in industrial machining applications. This book introduces vegetable oils as viable and good alternative resources because of their environmental friendly, non-toxic and readily biodegradable nature. The effectiveness of various types of vegetables oils as lubricants and additives in reducing wear and friction is discussed in this book. Engineers and scientist working in the field of lubrication and machining will find this book useful.
Hoff, Brian D [East Peoria, IL; Akasam, Sivaprasad [Peoria, IL; Algrain, Marcelo C [Peoria, IL; Johnson, Kris W [Washington, IL; Lane, William H [Chillicothe, IL
A power system includes an engine having a first lubrication circuit and at least one auxiliary power unit having a second lubrication circuit. The first lubrication circuit is in fluid communication with the second lubrication circuit.
Program PIA Program GO-FAAR Program Other Opportunities Tourism Visits to Tololo Astro tourism in Chile Tourism in Chile Information for travelers Visit Tololo Media Relations News Press Release Publications â¹âº You are here CTIO Home Â» Outreach Â» Tourism Â» Tourism in Chile Tourism in Chile Map of
Alsaad, M.; Bair, S.; Sanborn, D. M.; Winer, W. O.
A preliminary investigation into the possible role of glass transition and glassy state behavior of lubricants in EHD contacts is reported. Measurements of the glass transition of lubricants as a function of pressure by two methods are presented along with a discussion indicating possible implications of the results to EHD lubrication.
Olsson, David Dam
as delivered stainless steel surfaces implying microstructure changes in terms of larger ratio of closed lubricant pockets due to selective grain boundary etching. Strategic surfaces have also been created by macroscopic texturing using spherical indentations having a very small edge slope in order to promote...... by strategic surfaces in comparison to normal stainless steel surfaces implying a larger extent of bi-axial stretching. Numerical simulations have been applied in order to evaluate limits of lubrication in the simulative strip reduction based on predictions of critical parameters appearing in terms......-models corresponds well to experimental results in terms of lubricant film breakdown and subsequently pick-up development. Punching and blanking have been investigated regarding tribological conditions in case of using stainless steel workpiece materials. However, this has called for development of a new test method...
BOUCHET, Patrick; BOUHAOUALA, Malek
Le tourisme sportif ne peut se prévaloir d’un héritage et d’une tradition dans l’histoire des vacances, du tourisme ou du sport. Il semble être un produit aux contours flous et aux limites en cours d’identification, caractérisé par la variété des métiers et des produits qui le constituent. En France, comme dans la plupart des pays occidentaux, l’intérêt porté au tourisme sportif est né d’un double mouvement. L’un décrit l’association et l’intégration croissante de pratiques et représentations...
Medical tourism is a burgeoning industry in our region. It involves patients travelling outside of their home country for medical treatment. This article provides an outline of the current research around medical tourism, especially its impact on Australians. Patients are increasingly seeking a variety of medical treatments abroad, particularly those involving cosmetic surgery and dental treatment, often in countries in South-East Asia. Adverse events may occur during medical treatment abroad, which raises medico-legal and insurance issues, as well as concerns regarding follow-up of patients. General practitioners need to be prepared to offer advice, including travel health advice, to patients seeking medical treatment abroad.
Full Text Available The natural and anthropic tourism resources of a certain area generate specific tourism forms, which complete each other within the different destination categories.The rural area in Dobrudja has diversified tourism potential, provided by the contrast of natural environment factors, ranging from the oldest and to the youngest relief units, natural protected areas, spa resources and cultural, historical, religious sites, as well as multicultural local customs and traditions of the rural area. This potential can be used under various kinds in the rural area: cultural tourism, historical tourism, religious tourism, ecotourism, fishing tourism or bird-watching tourism, and other kinds of rural tourism. By linking these tourism resources and tourism forms, tourism routes can result, which together with the local customs, traditions and cuisine may contribute to the social and economic development of Dobrudja's rural area, through sustainable tourism as alternative to seasonal seashore tourism.
The present work deals with friction in mixed lubricated line contacts. Components in systems are becoming smaller and due to, for instance power transmitted, partial contact may occur. In industrial applications, friction between the moving contacting surfaces cannot be avoided, therefore it is
Altınörs, Nur; Haberal, Mehmet
The aim of this study was to review and discuss the great variety of ethical issues related to organ donation, organ procurement, transplant activities, and new ethical problems created as a result of technologic and scientific developments. An extensive literature survey was made, and expert opinions were obtained. The gap between demand and supply of organs for transplant has yielded to organ trafficking, organ tourism, and commercialism. This problem seems to be the most important issue, and naturally there are ethical dilemmas related to it. A wide number of ideas have been expressed on the subject, and different solutions have been proposed. The struggle against organ trafficking and commercialism should include legislation, efforts to increase deceased-donor donations, and international cooperation. China's policy to procure organs from prisoners sentenced to death is unethical, and the international community should exert more pressure on the Chinese government to cease this practice. Each particular ethical dilemma should be taken separately and managed.
Munar, Ana Maria
Will tourist guides survive or will they be made redundant by digital technologies? Can we substitute theguide by an app or by a robot? Is a tourism experience without technology more or less authentic? And isour capacity to engage in human relationships and with a place threaten or enhanced by our...
Will tourist guides survive or will they be made redundant by digital technologies? Can we substitute theguide by an app or by a robot? Is a tourism experience without technology more or less authentic? And isour capacity to engage in human relationships and with a place threaten or enhanced by our...
Aynar G. Kogoniya; Marina G. Kvitsiniya
Tourism competition growth in the world arena demands Abkhazia to improve the quality of the rendered services, as well as to increase the number of tour routes and diversify the types of tourism, for instance, equine tourism, hunting tourism, speleological tourism and ethnotourism, rapidly developing in recent years.
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Under what circumstances should a citizen be able to avoid the penalties set by the citizen's home country's criminal law by going abroad to engage in the same activity where it is not criminally prohibited? Should we view the ability to engage in prohibited activities by traveling outside of the nation state as a way of accommodating cultural or political differences within our polity? These are general questions regarding the power and theory of extraterritorial application of domestic criminal law. In this Article, I examine the issues through a close exploration of one setting that urgently presents them: medical tourism. Medical tourism is a term used to describe the travel of patients who are citizens and residents of one country, the "home country," to another country, the "destination country," for medical treatment. This Article is the first to comprehensively examine a subcategory of medical tourism that I call "circumvention tourism," which involves patients who travel abroad for services that are legal in the patient's destination country but illegal in the patient's home country--that is, travel to circumvent domestic prohibitions on accessing certain medical services. The four examples of this phenomenon that I dwell on are circumvention medical tourism for female genital cutting (FGC), abortion, reproductive technology usage, and assisted suicide. I will briefly discuss the "can" question: assuming that a domestic prohibition on access to one of these services is lawful, as a matter of international law, is the home country forbidden, permitted, or mandated to extend its existing criminal prohibition extraterritorially to home country citizens who travel abroad to circumvent the home country's prohibition? Most of the Article, though, is devoted to the "ought" question: assuming that the domestic prohibition is viewed as normatively well-grounded, under what circumstances should the home country extend its existing criminal prohibition
Chapaykina, S A; Ol' kov, P L; Pertsev, A N; Rodzevillo, I T; Rogacheva, O I; Zinov' yev, A P
A method is disclosed to lower the adherence of materials by reducing the viscosity of a preventive maintenance lubricant against adhesion of moist, freeflowing materials, containing extract of selective cleaning of oil fractions and asphalt. Gas oil of catalytic cracking is added having a boiling point of 190-300 degrees, with the following ratio of components (%): selective cleaning extract, 43-50; asphalt, 14-16; and gas oil of catalytic cracking, the remainder, Treating a surface with the proposed lubricant lowers the specific resistance to shift of rock compared with the prototype (g/cm/sup 2/): sand (moisture content, 18%) from 3.82 to 1.55; and clay (moisture content 16%), from 5.41 to 3.51.
Full Text Available Realising tourism in the context of responsibility is a problem of historical-social and economic time-space continuum; the problem of possibility of temporal unification of these parts. The study aims to emphasize that the essence of problem can only be understood in the depth of a general problematic of tourism, as a question of temporalisation of historical-social space, which, however, leads to a grand question of today: does the human activity which creates temporalised spaces have its own gravitational direction? Ad deliberandum. The study proposes the viewpoint that the context of responsibility requires overcoming the dimension of interpretation where the subject is understood as an ultimate human-singularity and a perfect match of responsibility with a dominant and current form of temporalisation of time suggests a paradigm of participating consciousness, the consciousness of unity, which, in Berdyaev's words, is never logical, but existential. The study, on the basis of a meticulous studying of a new narrative of tourism, primarily due to volume restrictions does not go beyond presenting the key attributes of this ever-expanding understanding of tourism - with a demonstration of a concrete practice - but all this with an emphasis that qualification of the actors' activities is possible only along the lines of a previous consideration of comprehension of structure of space and time - along the revalorisation of a motivational horison (Anzenbacher, A 1987, 264.p. and also the very term of responsibility and freedom. Responsibility can only then become an orientation of tourist activities, if the primary focus is set on re-comprehension (revalorisation of civilisational legacies in a timeless perspective.
A summary is presented of the advances made during 1967 in the following areas: production and transmission of natural gas; geosciences; drilling and production technology; secondary recovery; transportation by tanker, pipelines, and tank cars; storage; planning of refineries; control and automation; cracking and gasification of crude oil; separation and hydrogenation processes; petrochemicals; combustion technology; fuels and additives; air and water pollution control; production of lubricants; lubrication with mist, gas, and vapors; hydraulic fluids; lubricant additives; oxidation and aging of oils; greases; solid lubricants; bearings; machining; friction and wear; and changes in materials of construction. (220 refs.)
Di Toro, G; Han, R; Hirose, T; De Paola, N; Nielsen, S; Mizoguchi, K; Ferri, F; Cocco, M; Shimamoto, T
The determination of rock friction at seismic slip rates (about 1 m s(-1)) is of paramount importance in earthquake mechanics, as fault friction controls the stress drop, the mechanical work and the frictional heat generated during slip. Given the difficulty in determining friction by seismological methods, elucidating constraints are derived from experimental studies. Here we review a large set of published and unpublished experiments (∼300) performed in rotary shear apparatus at slip rates of 0.1-2.6 m s(-1). The experiments indicate a significant decrease in friction (of up to one order of magnitude), which we term fault lubrication, both for cohesive (silicate-built, quartz-built and carbonate-built) rocks and non-cohesive rocks (clay-rich, anhydrite, gypsum and dolomite gouges) typical of crustal seismogenic sources. The available mechanical work and the associated temperature rise in the slipping zone trigger a number of physicochemical processes (gelification, decarbonation and dehydration reactions, melting and so on) whose products are responsible for fault lubrication. The similarity between (1) experimental and natural fault products and (2) mechanical work measures resulting from these laboratory experiments and seismological estimates suggests that it is reasonable to extrapolate experimental data to conditions typical of earthquake nucleation depths (7-15 km). It seems that faults are lubricated during earthquakes, irrespective of the fault rock composition and of the specific weakening mechanism involved.
Shen, Cen; Li, Jin
A new trend is developing in the tourism market nowadays – dark tourism. The main purpose of the study was to explore the marketing strategies of dark tourism sites in Budapest based on the theoretical overview of dark tourism and data gathering of quantitative research. The study started with a theoretical overview of dark tourism in Budapest. Then, the authors focused on the case study of House of Terror, one of the most important dark tourism sites in Budapest. Last, the research has ...
Pfeiffer, W. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Breuer, D. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Blome, H. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Deininger, C. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Hahn, J.U. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Kleine, H. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Nies, E. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Pflaumbaum, W. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Stockmann, R. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Willert, G. [Berufsgenossenschaftliches Inst. fuer Arbeitssicherheit, St. Augustin (Germany); Sonnenschein, G. [Maschinenbau- und Metall-Berufsgenossenschaft, Duesseldorf (Germany)
As a rule, the base substances used are certain liquid hydrocarbons from mineral oils as well as from native and synthetic oils. Through the addition of further substances the cooling lubricant takes on the particular qualities required for the use in question. Employees working with cooling lubricants are exposed to various hazards. The assessment of the concentrations at the work station is carried out on the basis of existing technical rules for contact with hazardous substances. However, the application/implementation of compulsory investigation and supervision in accordance with these rules is made difficult by the fact that cooling lubricants are, as a rule, made up of complicated compound mixtures. In addition to protecting employees from exposure to mists and vapours from the cooling lubricants, protection for the skin is also of particular importance. Cooling lubricants should not, if at all possible, be brought into contact with the skin. Cleansing the skin and skin care is just as important as changing working clothes regularly, and hygiene and cleanliness at the workplace. Unavoidable emissions are to be immediately collected at the point where they arise or are released and safely disposed of. This means taking into account all sources of emissions. The programme presented in this report therefore gives a very detailed account of the individual protective measures and provides recommendations for the design of technical protection facilities. (orig./MG) [Deutsch] Als Basisstoffe dienen in der Regel bestimmte fluessige Kohlenwasserstoffverbindungen aus Mineraloelen sowie aus nativen oder synthetischen Oelen. Durch die Zugabe von weiteren Stoffen erlangt der Kuehlschmierstoff seine fuer den jeweiligen Anwendungsabfall geforderten Eigenschaften. Beschaeftigte, die mit Kuehlschmierstoffen umgehen, sind unterschiedliche Gefahren ausgesetzt. Die Beurteilung der Kuehlschmierstoffkonzentrationen in der Luft am Arbeitsplatz erfolgt auf der Grundlage bestehender
Mijalce Gjorgievski; Sinolicka Melles Trpkova
At the turn of the century, the tourism industry underwent a transformation triggered by the sweeping processes of globalization. The traditional forms of tourism were supplemented and expanded by the introduction of new postmodern tourist forms, bringing new and different tourist offers to the marketplace. One of these new forms is the film tourism, a rapidly growing and important new tourism trend, in which the choice of the tourist destination is directly motivated and inspired by the movi...
The invention concerns self lubricating fluid bearings, which are used in a shaft sealed system extending two regions. These regions contain fluids, which have to be isolated. A first seal is fluid tight for the first region between the carter shaft and the shaft. The second seal is fluid tight between the carter and the shaft, it communicates with the second region. The first fluid region is the environment surrounding the shaft carter. The second fluid region is a part of a nuclear reactor which contains the cooling fluid. The shaft is conceived to drive a reactor circulating and cooling fluid [fr
Borzenko, V.A.; Koltovskiy, L.V.; Koshelyov, Yu.I.; Kuzovlyev, G.F.; Lebedyev, S.I.; Sitnikov, S.A.; Telegin, V.D.
To improve operation of scrubbers that operate in crystallizers for deparaffinization of oil products, a formula is being suggested which contains siliceous fibers, and a type of thermoactive resin - phenol-formaldehyde laquer, with the following component ration (% weight): carbon fiber 20-25, siliceous fibers 20-30, dry lubricant 10-15, phenolformaldehyde laquer up to 100. Phys.-mech. characteristics are flexure, compression, Ak of the suggested and known compositions (kgs/cm/sup 2/) 2150-2450 and 2550-2700, 32-37 and 1750, 2150 and 27 operation resource 2100:2500 and 1400.
Search skip specific nav links Home arrow Heritage Tourism Heritage Tourism ACHP Reports Partnering to Promote Heritage Tourism in Local Communities: Guidance for Federal Agencies Federal Programs that Can Support Heritage Tourism Web-Available Studies of the Economic Impacts of Historic Preservation Heritage
This work concentrates on Internet and its influence on tourism. It describes history of Internet, tourism and interactions among them. Next this work deals with the newest trends of Internet and their influence on tourism. Last but not least, it analyzes the influence of Internet on demand in tourism in Czech Republic.
Howard, Dennis, Ed.; And Others
Eleven articles explore a broad range of issues relating to tourism and the leisure profession, including: (1) need for social science research on tourism; (2) economic and population trends; (3) federal legislation and programs to encourage tourism from abroad; (4) tourism education; (5) marketing aproaches and strategies; and (6) studies of…
Full Text Available The spectacular increase in tourism in the Alps in recent decades has been founded mainly on the boom in skiing, resulting in both strong real estate development and an increasing array of infrastructures and ski runs. Today the ski market seems to have virtually reached saturation point and the winter sports sector needs to diversify its offer through innovation. After a review of the main factors of change in mountain tourism, the paper presents a grid for interpreting the life cycle of alpine destinations, identifying the phases that characterize their evolution. The conditions that may favour innovation in alpine tourism are then identified, as well as the contradictions that frequently accompany them. In most cases, innovation is the result of a process that begins within the alpine community, frequently encouraged and supported by national and international institutions and with whose help structural difficulties are successfully overcome.La forte croissance qu’ont connue les pays alpins dans les dernières décennies a surtout été fondée sur l’offre des activités du ski, avec comme conséquence, un massif développement immobilier et la multiplication d’infrastructures et de pistes. Aujourd’hui, le marché du ski semble arriver à saturation, la Convention alpine a mis un frein à la poursuite du développement des domaines skiables et on observe donc avec intérêt la diversification de l’offre soutenue par l’innovation. Après avoir rappelé les facteurs de changement en cours les plus significatifs dans le tourisme montagnard, l’article présente une grille interprétative de l’évolution des destinations touristiques alpines, identifiant les phases qui ont caractérisé son développement. Ensuite, l’article propose une réflexion sur certaines conditions qui peuvent favoriser l’innovation dans le tourisme alpin, ainsi que sur les contradictions qui accompagnent souvent ces conditions. Dans la plupart des cas
Rodriguez Jurado, J
A yellow solid petroleum paraffin d/sup 60/ 0.808, I number 3.5, average molecular weight 350, chlorinated and condensed with benzene, xylene, or naphthalene by the Friedel and Crafts reaction, in the presence of anhydrous AlCl/sub 3/ or activated Al, gave synthetic lubricating oils. Xylene was the preferred aromatic compound, naphthalene required the use of less completely chlorinated paraffin, benzene produced resins difficult to remove and gave darker oils with excessive green fluorescence. Activated Al rather than anhydrous AlCl/sub 3/ gave darker oils with higher viscosity and Conradson C values. Tar from the low-temperature distillation of lignite, used as a source of a paraffin fraction melting 40/sup 0/ to 48/sup 0/ (chlorinated to 26.5 percent Cl) and an aromatic fraction, 45 percent aromatic compounds by volume (mainly polysubstituted benzenes), I number 10, was converted to a similar synthetic lubricant with the following properties: Kinematic viscosity at 210/sup 0/ F., 50.4 centistokes; viscosity index, 92; Conradson C, 1.5 percent; solidification point, 9/sup 0/; S, 0.41 percent.
Violante Martínez Quintana
Full Text Available Nature tourism has emerged in the tourism field as a result of a logical evolution in line with public policies and academic research. After negative outcomes from traditional models first raised the alarm, the entire sector has tried to foster local development based on models of responsibility and sustainability. This article revises key concepts of nature – based tourism and shows new tendencies and the perception of cultural landscapes that are seen as tourism products. Finally, it concludes by analysing new tendencies to foster alternative nature – based tourism. It also presents a planning proposal based on a responsible and sustainable tourism model to guarantee a sustainable tourism product within the natural and cultural heritage context.
Full Text Available Medical tourism is a fast growing multibillion-dollar industry around the world and it entails trade in services of two major industries i.e. medicine and tourism. India is currently promoting medical tourism aggressively. The present study presents an overview of medical tourism in India and presents a SWOT analysis and concludes with some valuable suggestions to develop India as a global Medical Tourism destination. The research is descriptive in nature and the data used includes interviews and discussions with various stakeholders as well as a literature review based on secondary sources. The research reveals that the key competitive advantages of India in the medical tourism arena arises from the following: low cost advantage, strong reputation in the advanced healthcare segment (cardiovascular surgery, organ transplants, eye surgery etc. and the diversity of the many and unique tourist destinations available in the country. The key concerns facing the industry include: absence of government initiatives, the lack of a coordinated effort to promote the industry, the lack of an accreditation mechanism for hospitals and the lack of uniform pricing policies and standards across hospitals throughout India.
Tourism policy matters in cultural tourism. The starting point of this paper is the observation that many tourism policy studies draw three inter-related conclusions. One, tourism policy must be inclusive and require the support of different stakeholders (Baker 2009; Bernhard Jørgensen and Munar...... 2009). Two, a balanced approach to tourism policy is needed to harness the benefits of tourism while mitigating negative effects (Budeanu 2009; Chang 1997; Jenkins 1997; Leheny 1995, Newby 1994; Teo and Yeoh, 1997). Three, tourism policies should accentuate and maintain the cultural uniqueness...... and authenticity of the destination (Morgan et al. 2011). It seems that many tourism authorities are ignorant of local interests, unaware of the touristification of local cultures and uninterested in promoting local cultures. But local cultures and communities are what that constitute cultural tourism....
Hepatic transplant; Transplant - liver; Orthotopic liver transplant; Liver failure - liver transplant; Cirrhosis - liver transplant ... The donated liver may be from: A donor who has recently died and has not had liver injury. This type of ...
... Search Skin Experts Skin Treatments Hair Transplants Share » HAIR TRANSPLANTS Before (left) and after (right) - front of ... transplant. Photo courtesy of N. Sadick What are hair transplants? In punch transplanting, a plug containing hair ...
Daniel, Dan; Timonen, Jaakko V. I.; Li, Ruoping; Velling, Seneca J.; Aizenberg, Joanna
Recently, there has been much interest in using lubricated surfaces to achieve extreme liquid repellency: a foreign droplet immiscible with the underlying lubricant layer was shown to slide off at a small tilt angle behaviour was hypothesized to arise from a thin lubricant overlayer film sandwiched between the droplet and solid substrate, but this has not been observed experimentally. Here, using thin-film interference, we are able to visualize the intercalated film under both static and dynamic conditions. We further demonstrate that for a moving droplet, the film thickness follows the Landau-Levich-Derjaguin law. The droplet is therefore oleoplaning--akin to tyres hydroplaning on a wet road--with minimal dissipative force and no contact line pinning. The techniques and insights presented in this study will inform future work on the fundamentals of wetting for lubricated surfaces and enable their rational design.
Program PIA Program GO-FAAR Program Other Opportunities Tourism Visits to Tololo Astro tourism in Chile Tourism in Chile Information for travelers Visit Tololo Media Relations News Press Release Publications â¹âº You are here CTIO Home Â» Outreach Â» Tourism Â» Astro Tourism in Chile Astro Tourism in
Tourism can create significant impacts on both the social and natural environment; however, many nations have avoided the negative impacts. Consideration of the effects of tourism should be part of national policy toward the tourist industry. (RE)
Full Text Available In this article the focus is on the role of information technology in tourism, tourism business, electronic payments, software used by tourist companies, new technologies for online advertising and shopping, software for mobile devices.
Gyimóthy, Szilvia; Munar, Ana María
This paper advocates the need for a critical and cross-disciplinary research agenda on the field of digital technologies and tourism. The changing virtual landscape of tourism has received increased attention by tourism scholars. However, contemporary studies on information technologies (IT......) are approached mostly from a business administration perspective and informed by conceptual frameworks developed in management and marketing. IT studies in tourism are still at a stage similar to the first advocacy phase of tourism research in general (Jafari, 1990) and are seldom inspired by relevant...... to studying digital socio-technical systems and virtual mediation in tourism. Critical Digital Tourism Studies opens a new cross-disciplinary field where the sociality of virtual tourism interactions is examined (entailing the study of structures, social rules, ideologies, power relations, sustainability...
This project explored the link between transportation and tourism in Texas. A session on transit and tourism was organized and conducted as part of the 2012 Texas Transit Conference. Speakers at the session described public transit services oriented ...
Volkova Tatiana Aleksandrovna; Karpova Julia Igorevna; Minenkova Vera Vladimirovna; Khodykina Anna Fedorovna
Social tourism is one of the most important types of tourism in the system of tourism industry, and a serious impulse is needed for its development and getting attention of the state and business to it. Currently the means of federal and regional budgets decrease by sanatorium treatment of citizens entitled to benefits from year to year. Development of social tourism is absolutely necessary, economically justified and profitable. At current reproduction of human resources is impor...
Xu, Shi; Martinez, Larry R.; Hubert, Van Hoof; Tews, Michael; Torres, Leonardo; Farfán, Karina
Ram (2015 Ram, Y. (2015). Hostility or hospitality? A review on violence, bullying and sexual harassment in the tourism and hospitality industry. Current Issues in Tourism. doi:10.1080/13683500.2015.1064364 [Taylor & Francis Online], [Google Scholar] . Hostility or hospitality? A review on violence, bullying and sexual harassment in the tourism and hospitality industry. Current Issues in Tourism. doi:10.1080/13683500.2015.1064364) posits that violence and harassment are areas of concern...
Blake, Adam; Arbache, Jorge Saba; Sinclair, Thea; Teles, Vladimir Kühl
This paper examines the issue of how tourism affects poverty in the context of the effects of tourism on an economy as a whole and on particular sectors within it. A framework for analysing the channels through which tourism affects different households is developed, and a computable general equilibrium model of the Brazilian economy is used to examine the economic impact and distributional effects of tourism in Brazil. It is shown that the effects on all income groups are posi...
Among others, tourism marketing has the purpose to facilitate the process of conceiving and developing those specific tourism products, which better corresponding to different tourists categories' needs. These products are created going from utilization of some natural and human resources, considered as tourism attraction. In the sustainable development spirit, marketers must conceive harmonious tourism product policies; as to satisfy the actual tourists' needs and future tourists generation'...
Mohammad Mohebi; Khalid A. Rahim
Problem statement: A review of the tourism history shows that tourism as an industry was virtually unknown in Malaysia until the late 1960s. Since then, it has developed and grown into a major industry, making an important contribution to the country's economy. By allocating substantial funds to the promotion of tourism and the provision of the necessary infrastructure, the government has played an important role in the impressive progress of the Malaysian tourism industry. One of the importa...
Tourism in rural Alaska is an education curriculum with worldwide relevance. Students have started small businesses, obtained employment in the tourism industry and gotten in touch with their people. The Developing Alaska Rural Tourism collaborative project has resulted in student scholarships, workshops on website development, marketing, small...
Full Text Available At the turn of the century, the tourism industry underwent a transformation triggered by the sweeping processes of globalization. The traditional forms of tourism were supplemented and expanded by the introduction of new postmodern tourist forms, bringing new and different tourist offers to the marketplace. One of these new forms is the film tourism, a rapidly growing and important new tourism trend, in which the choice of the tourist destination is directly motivated and inspired by the movies. Film tourism establishes a link between the movie characters, locations and stories, and the film-tourists, who are inspired to immerse themselves and relive again the movie-generated and movie-driven emotions at the location of the movie. The film tourism increases the overall economic effects of tourism and establishes a new link between the film and the tourism industry, both of which provide not only pleasure and satisfaction for the film tourist, but also spiritual enrichment and novel learning experience.
Full Text Available The tourism industry is one of the largest industries in the world, and despite recent events that have made its operating environment more complex, the industry continues to grow [Theobald, 2005, Global Tourism, 3rdedn., Butterworth-Heinemann/Elsevier]. Commensurate to the size of the industry is a growth in the number of students pursuing degree courses in tourism around the world. Despite an increasingly sophisticated literature, the relative recency of the industry and its study has meant little attention has been paid in the ethics literature to the dilemmas facing tourism managers and its students. Based on interviews with senior members of the tourism industry six scenarios are developed with pertinence to the challenges faced by industry practitioners today.
Hofer, Richard R. (Inventor); Bickler, Donald B. (Inventor); D'Agostino, Saverio A. (Inventor)
Disclosed herein is a lubrication device comprising a solid lubricant disposed between and in contact with a first electrode and a second electrode dimensioned and arranged such that application of an electric potential between the first electrode and the second electrode sufficient to produce an electric arc between the first electrode and the second electrode to produce a plasma in an ambient atmosphere at an ambient pressure which vaporizes at least a portion of the solid lubricant to produce a vapor stream comprising the solid lubricant. Methods to lubricate a surface utilizing the lubrication device in-situ are also disclosed.
Bødker, Mads; Browning, David
Proposing new design opportunities, this paper challenges received notions of tourism, arguing that tourism is fundamentally social and concerned with making place. This turn makes tourism not only a convenient testing ground for technology concepts, but increasingly also for more sensitive...... renderings of, and interventions in, tourism as a relational and social practice. Using examples from commercial, arts, and design projects, and providing excerpts from our own fieldwork and design workshops with tourists and locals, this paper outlines three challenges through a conceptual lens that we see...... as productive for appropriate interaction design of tourism technologies....
... always take your medicine as directed. Alternative Names Renal transplant; Transplant - kidney Patient Instructions Kidney removal - discharge Images Kidney anatomy Kidney - blood and urine flow Kidneys Kidney transplant - ...
PAUL ALEXANDRU BRUMARU
Full Text Available La sociologie du tourisme. Le tourisme, en tant que phénomène de masse, n’apparaît qu’au début du 19e siècle. Bien que sa période moderne de développement soit courte, le tourisme a connu beaucoup de transformations allant du tourisme balnéaire au tourisme culturel et industriel. À présent, le tourisme se définit sous trois aspects interdépendants : comme ressource, élément de dangerosité et phénomène social. En tant que ressource durable ayant une valeur de marché, le tourisme représente une opportunité de développement régional. En outre, l’impact du tourisme sur la société peut se transformer en un élément de dangerosité dont les effets seront ressentis à long terme. En tant que phénomène social, le tourisme peut devenir un prétexte de socialisation, une alternative au quotidien, un moyen d’éducation. Sous aspect ethnique, le tourisme peut perpétuer ou aggraver les conflits interculturels. Au niveau de chaque individu le tourisme est perçu de manière subjective.
Qu, J. [ORNL; Viola, M. B. [General Motors Company
This ORNL-GM CRADA developed ionic liquids (ILs) as novel lubricants or oil additives for engine lubrication. A new group of oil-miscible ILs have been designed and synthesized with high thermal stability, non-corrosiveness, excellent wettability, and most importantly effective anti-scuffing/anti-wear and friction reduction characteristics. Mechanistic analysis attributes the superior lubricating performance of IL additives to their physical and chemical interactions with metallic surfaces. Working with a leading lubricant formulation company, the team has successfully developed a prototype low-viscosity engine oil using a phosphonium-phosphate IL as an anti-wear additive. Tribological bench tests of the IL-additized formulated oil showed 20-33% lower friction in mixed and elastohydrodynamic lubrication and 38-92% lower wear in boundary lubrication when compared with commercial Mobil 1 and Mobil Clean 5W-30 engine oils. High-temperature, high load (HTHL) full-size engine tests confirmed the excellent anti-wear performance for the IL-additized engine oil. Sequence VID engine dynamometer tests demonstrated an improved fuel economy by >2% for this IL-additized engine oil benchmarked against the Mobil 1 5W-30 oil. In addition, accelerated catalyst aging tests suggest that the IL additive may potentially have less adverse impact on three-way catalysts compared to the conventional ZDDP. Follow-on research is needed for further development and optimization of IL chemistry and oil formulation to fully meet ILSAC GF-5 specifications and further enhance the automotive engine efficiency and durability.
Alzoubi, M. F.; Fenske, G. R.; Erck, R. A.; Boparai, A. S.
Analysis of the volatile and semivolatile fractions collected after use of the TOR lubricant indicated that other than contaminants in the collection laboratory, no compounds on the EPA's Target Compound Lists (Tables 2 and 5) were detected in these fractions. The data of these qualitative analyses, given in the various tables in the text, indicate only the relative amounts of the tentatively identified compounds. The authors recommend that quantitative analysis be performed on the volatile and semivolatile fractions to allow confirmation of the tentatively identified compounds and to obtain absolute amounts of the detected compounds. Additionally, the semivolatile fraction should be analyzed by liquid chromatography/mass spectrometry to identify compounds that are not chromatographable under the temperature program used for determination of semivolatile compounds. Introducing the top-of-rail (TOR) lubricant into the wheel/rail interface results in a reduction of almost 60% of lateral friction force over the forces encountered under dry conditions. This reveals good potential for energy savings, as well as wear reduction, for railroad companies. In TOR lubrication, an increase in the angle of attack and axle load results in increased lateral friction and rate of lubricant consumption. The most efficient TOR lubricant quantity to be used in the wheel/rail interface must be calculated precisely according to the number of cars, axle loads, train speed, and angle of attack.
Boesen, Morten; Sundbo, Donna; Sundbo, Jon
This article investigates the question: Why local food networks succeed or fail in collaborating with local tourism actors to create more tourism based on local food? The article focuses on entrepreneurial local food networks and their collaboration with local tourism actors. Emphasis...... is on the actions and attitude logics of local food networks and tourism actors, and whether their respective logics fit as a factor to explain why or why not development of local food concepts lead to increased local tourism. Six local food networks and their collaboration with local tourism actors are studied...... by using observation supplemented with other qualitative methods. Analysis of these networks reveals that successful collaboration is characterised by the food networks and tourism actors having at least one logic in common. The fitting logics that lead to success are primarily celebrity and civic logics...
Tourism is promoted by policy makers and international organizations as a tool for advancing conservation agendas, while contributing to poverty alleviation and human development, under the banner of ecotourism or sustainable tourism. However, the indiscriminating use of complex and ambiguous...... concepts such as “poverty” and “sustainability” hide important nuances with regards to the variety of processes and subsequent effects that are triggered when tourism and conservation are being adjoined. Experiences with tourism developments show that destinations that are weak economically find it harder...... to draw benefits from tourism developments or to decline participation in tourism with only little or no losses of sources of income and wealth. If tourism should fulfil sustainability goals related to conservation, poverty, and human development, it needs consistent governmental intervention...
This chapter discusses tourism education for sustainability with a particular focus on the challenges and opportunities associated with preparing students to work within complex tourism governance settings. It takes the position that the development of tourism within a sustainability framework...... requires that tourism professionals effectively engage in dynamic social discourses where difficult trade-offs are made between competing demands. The challenge for tourism education is therefore to prepare graduates to work in these complex, value-laden, socio-political environments where they can...... proactively and positively contribute to developing forms of tourism that progress the objectives of sustainable development. This chapter explores this challenge in terms of a philosophic tourism practitioner education, and in doing so, discusses three key dimensions of this education: historical antecedents...
Full Text Available Christian tourism is asub-type of tourism where pilgrims travel alone or in group as missionaries orpilgrims or to spend their free time to recollect; it attracts a large numberof travellers. Christian tourism can be practiced by religious young people,missionaries, participants to religious convents, amateurs of religiouscruises, religious camps, visitors of religious attractions, religiousadventurers. Christian tourism can be considered a sub-type of religioustourism because of the large number of people involved in this type of tourismworldwide. Christian tourism as a sub-category of religious tourism coversthree main sub-types: traditional pilgrimage practiced by most world religions,missionary travel to different areas in the world, and confessional voyage. Thestructure of hospitality industry is common to all types of tourism but, fortraditional pilgrimage, there must be special places for the pilgrims to sleep,eat and pray, because they belong, in most cases, to the medium-income touristcategory.
Full Text Available This paper tends to study tourism attitudes among the youth. It argues that in studying tourism among the youth, it is necessary to consider youth’s other behavioral factors in addition to the youth subculture. Therefore, we should study the youth culture from the view point of “Consumption”. In this view, youth tourism is equal to consumption of time, space and signs. Using ongoing theoretical debates and division, we would attempt to explore various factors of youth tourism. This article shows that youth tourism and youth culture are so mutually interconnected that we should comprehend youth tourism based on youth culture and vise versa. In conclusion, analyzing the youth subculture which is rooted in their consumption attitudes, the study attempts to understand youth tourism.
Olsson, David Dam
The background for development of new lubricants Requirements to lubricant test for punching Methods of evaluating lubricants Test equipment developed at DTU Conclusion.......The background for development of new lubricants Requirements to lubricant test for punching Methods of evaluating lubricants Test equipment developed at DTU Conclusion....
Lynden A. Archer
The objective of this research project is two-fold. First, to fundamentally understand friction and relaxation dynamics of polymer chains near surfaces; and second, to develop novel self-lubricated substrates suitable for MEMS devices. During the three-year performance period of this study the PI and his students have shown using theory and experiments that systematic introduction of disorder into tethered lubricant coatings (e.g. by using self-assembled monolayer (SAM) mixtures or SAMs with nonlinear, branched architectures) can be used to significantly reduce the friction coefficient of a surface. They have also developed a simple procedure based on dielectric spectroscopy for quantifying the effect of surface disorder on molecular relaxation in lubricant coatings. Details of research accomplishments in each area of the project are described in the body of the report.
Deng Xiao; Deng Liping; Huang Wei; Liu Lizhi; Zhao Xuecen; Liu Songya
A model enabling all different flow state lubrication performance simulation and analysis for water-lubricated thrust bearing is presented, considering the temperature influence and elastic deformation. Lubrication state in the model is changed directly from laminar lubrication to turbulent lubrication once Reynolds number exceeds the critical Reynolds number. The model is numerically solved and results show that temperature variation is too little to influence the lubrication performance; the elastic deformation can slightly reduce the load carrying capacity of the thrust bearing; and the turbulent lubrication can remarkably improve the load carrying capacity. (authors)
Full Text Available Tourism is an industry of the future, having the potential to provide significant revenues, and an industry of 'beauty', because it will protect, preserve and contribute to arranging the environment affected by other human activities. This is why it is very important to know the evolution of this underdeveloped field in our country. This paper is intended as a study on current trends in Romanian tourism without any claim of being an exhaustive research on the industry, describing the main indices of tourist traffic and their influence on Romanian tourism. Nowadays, we witness three main trends in Romanian tourism: sustainability, ecotourism and the increasing presence of cultural tourism. Ecotourism, as a form of tourism, has emerged from people's need to withdraw in nature, to visit and learn about the natural areas which have or have not a national or international protection status. Cultural tourism appears as a type of tourism clearly differentiated from other forms or types of tourism, particularly through motivation. It can be defined as a form of tourist mobility whose primary goal is broadening the horizon of knowledge by uncovering its architectural and artistic heritage and the areas in which it originates. Sustainability for tourism, as for other industries, has three independent aspects: economic, socio-cultural and environmental. Sustainability implies permanence, which means that sustainable tourism requires the optimal use of resources, minimizing the negative economic, socio-cultural and ecological impact, maximizing the benefits upon local communities, national economies and conservation of nature. Regarding statistical data, in what quantity is concerned, there is an increase in Romanian tourism, but in what quality is concerned there is a setback for tourism in the last years. This aspect should make public authorities take concern in improving the infrastructure and the quality of the touristical activity and in diversifying
Bowen, H.B.; Miller, T.L.
The diversity of equipment and operating conditions at a major national research and development laboratory requires a systematic, effective lubrication program. The various phases of this program and the techniques employed in formulating and administering this program are discussed under the following topics: Equipment Identification, Lubrication Requirements, Assortment of Lubricants, Personnel, and Scheduling.
Bowen, H.B.; Miller, T.L.
The diversity of equipment and operating conditions at a major national research and development laboratory requires a systematic, effective lubrication program. The various phases of this program and the techniques employed in formulating and administering this program are discussed under the following topics: Equipment Identification, Lubrication Requirements, Assortment of Lubricants, Personnel, and Scheduling
Arentoft, Mogens; Bay, Niels; Tang, Peter Torben
A lubricant carrier for metal forming processes is developed. Surfaces with pores of micrometer size for entrapping lubricant are generated by electrochemical deposition of an alloy, consisting of two immiscible metals, of which one metal subsequently is etched away leaving 5 mu m layers with a s...... extrusion at high reduction and excessive stroke comparing with conventionally lubrication using phosphate coating and soap....
Example application are first outlined, followed by descriptions of inorganic solid lubricants and plastics. Waxes, soaps and salts are discussed. Notes for usage are given. Solid lubricants in oils and greases are comprehensively described, followed by the sections entitled Solid lubricants for gearboxes . References to samples, tests, standards and bibliography make up the conclusion. (orig.) [de
... § 880.6375 Patient lubricant. (a) Identification. A patient lubricant is a device intended for medical... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Patient lubricant. 880.6375 Section 880.6375 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL...
Metodijeski, Dejan; Stojanoski, Hristo
The subject of research in this paper is the popular culture and tourism analysed from the perspective of the music aspect of tourism. Although tourism and music can be characterized as a popular culture, these two terms are not analysed individually. Instead, this research is taking into consideration their mutual relation and synergy. This paper is making an attempt to define the popular culture, tourism and music tourism through numerous examples of music tourism around the globe. In ad...
Rainer Andergassen; Guido Candela
This paper investigates the effectiveness of development strategies for tourism destinations. We argue that resource investments unambiguously increase tourism revenues and that increasing the degree of tourism sophistication, that is increasing the variety of tourism related goods and services, increases tourism activity and decreases the perceived quality of the destination's resource endowment, leading to an ambiguous effect on tourism revenues. We disentangle these two effects and charact...
MARIUS BOIŢĂ; ANDREI ANGHELINA; BOBY COSTI
This work aims to present the gastronomic tourism, which is a new conception and form of tourism, dealt with separately from other forms of tourism, which combines features of cultural, thematically and durable tourism, aiming at meeting and educating tourists in traditional culinary arts, bringing benefits to the local people and maintaining various sectors of the economy. Gastronomic tourism consolidates, in this vision, as a key element in the diversification of the tourism ...
Jensen, Camilla; Zhang, Jie
The article addresses two questions related with tourism as a service trade. Can tourism be explained as other export activities? Does service liberalisation have a positive or negative impact on tourism receipts in destination countries? Previous research has either focused on the demand side...... factors (i.e. factors of demand in the origin countries) or on tourism as a long-run factor of economic growth. The research shows that a complementary perspective such as that offered by trade in a supply side perspective can render additional insights towards understanding tourism. This approach can...... explain why countries have absolute and comparative advantage. Another finding is that tourism as an export can be explained by some of the same destination factors that explain other service exports. Using different panel estimators the importance of supply side factors that are to some extent exclusive...
Jørgensen, Matias Thuen
This thesis adopts a novel qualitative approach that provides a deeper understanding of the tourism distribution phenomenon and of China outbound tourism to Scandinavia. Gaps in existing knowledge have been revealed through an extensive review of the literature on tourism distribution and on China...... outbound tourism. The reviews show that there has been little research, which provides deep understandings of the distribution process for China outbound tourists. Most studies of China outbound tourism focused on tourists in isolation and deployed quantitative methods to understand discrete elements...... such as motivations or image. These studies often ignored actors other than the tourists themselves and did not consider other influencing relationships and factors. This thesis questions such approaches and proposes that tourism distribution is also affected by enactments, relations and factors, which have little...
Full Text Available Rural tourism is now determined by limited economic opportunities, poor infrastructure, low motivation to possible offers, lack of proper service guarantees. Nearly 500 Romanian villages are already tourist locations, with certain characteristics determined by a heritage item, or complex ones when multiple components lead to various activities. This paper includes a typology of tourist villages in Romania according to the types of practiced tourist activities, insisting on the use of a more comprehensive terminology: tourism in rural environment, participative and creative tourism in rural areas. Tourism becomes a system accepted in the rural environment as a real opportunity for economic development with multiple social consequences. By multiplying tourism potential to meet tourists’ demands, many villages will get tourism valences with various activities in this filed, including environment protection.
Medical tourism, often addressed as health tourism, is a new concept in terms of tourism industry in general, and it is also one of the rapidly developing and growing ones. This thesis gives information on the medical tourism in general and its history. It also revises the development stages of the medical tourism in the world. Cuban medical tourism is analyzed on its own, as well as Russian medical tourism and the demand for it. Medical tourism is rather popular among Russians due to various...
Graburn, Nelson H. H.
Explains the organization and objectives of a college level anthropology course devoted to various aspects of tourism. Topics discussed include course content, graduate students and contemporary research on tourism, and the role of tourism in the anthropology curriculum. (DB)
The increasing focus on legislation towards diminishing the impact on working environment as well as external environment has driven efforts to develop new, environmentally benign lubricants for metal forming. The present paper gives an overview of these efforts to substitute environmentally...
Mc Intyre, Maria Kleivan
ABSTRACT This project explores the phenomenon of North American and Western European women, who travel to the Global South and engage in sexual encounters with the local men. This project has positioned itself as a postcolonial critique, arguing that female sex tourism is a form of neocolonialism. It has also investigated the term romance tourism, where it has found that as a result of essentialist gender stereotyping, the female version of sex tourism has been titled ‘romance tourism’. The p...
The nature, extent, and implications of innovation in tourism are increasingly investigated in academic research, but the policies that affect these transformations in the industry and at tourism destinations are not equally well conceptualised theoretically or analysed empirically. The purpose...... framework of policy instruments for innovation in tourism. New generations of policies instigate a mainstreaming of the innovation agenda in ways that proceed beyond the traditional policy concepts....
Tourism can be a challenging subject for students because it is both dynamic and susceptible to economic turbulence and shifts in trends. Tourism: A Modern Synthesis is an essential textbook for tourism students looking for a clear and comprehensive introduction to their studies which helps overcome these challenges. The authors apply a strong business approach to the subject reflecting developments in the teaching and content of modern courses and the text covers both key principles and cont...
The natural and anthropic tourism resources of a certain area generate specific tourism forms, which complete each other within the different destination categories.The rural area in Dobrudja has diversified tourism potential, provided by the contrast of natural environment factors, ranging from the oldest and to the youngest relief units, natural protected areas, spa resources and cultural, historical, religious sites, as well as multicultural local customs and traditions of the rural area. ...
Nuno Carlos LEITÃO
Full Text Available This study considers the relationship between immigration and Portuguese tourism demand for the period 1995-2008, using a dynamic panel data approach. The findings indicate that Portuguese tourism increased significantly during the period in accordance with the values expected for a developed country. The regression results show that income, shock of immigration, population, and geographical distance between Portugal and countries of origin are the main determinants of Portuguese tourism.
Full Text Available The growth of medical tourism in developing nations has not only helped the local economies but also has assisted patients from the developed world to seek treatment at a lower cost. However, the expansion of the sector has been stigmatized by the growth of organ trafficking that facilitates organ transplantation to those who can afford it. Although developing countries have been taking measures to prohibit the sale of organs, the large gap between demand and supply has fuelled a black market that involves the "brokers", the medical personnel and the poor whose abuse and exploitation is fuelled by the expansion of the sector and the illegitimate opportunities it creates on the side. The problem is exacerbated by the low supply in developed countries, where living potential donors appear to be misinformed about the process and hesitate to register as donors. The need for a nationwide campaign of awareness is urgently needed as the expansion of medical tourism has the potential of encouraging a further rise in organ trafficking.
In this paper I will review the main properties of water lubricated pipelines and explain some new features which have emerged from studies of self-lubrication of Syncrudes' bitumen froth. When heavy oils are lubricated with water, the water and oil are continuously injected into a pipeline and the water is stable when in a lubricating sheath around the oil core. In the case of bitumen froth obtained from the Alberta tar sands, the water is dispersed in the bitumen and it is liberated at the wall under shear; water injection is not necessary because the froth is self-lubricating
Full Text Available Youth tourism differentiated itself from the concept of traditional tourism by the distinctive profile of its participants. In the last 10 years this branch had a very rapid growth, contributingsignificantly to any countries’ economy due to the amount of money that was spent by young people on different types of tourism. The aim of this paper is to present the most practiced forms of youth tourism, and their development worldwide and also in Romania. The conclusions show the most practiced types on a European and on Romanian level.
A.S. Teletov; V.I. Karpets
The aim of the article. The aim of the article is to clarify the concept of «sport tourism marketing», to examine the state of its objects and to determine prospects for development of sport tourism in Ukraine. The paper singles out the role of sport in life; compares different types of cities in terms of provision the infrastructure for tourism development in the field of sports. Authors show the example of the campaign. The results of the analysis. The article deals with sport tourism as...
Rodrigo de Azeredo Grünewald
Full Text Available One of the most significant issues confronting studies in the anthropology of tourism is that of cultural change precipitated in host societies as a result of an influx of tourists. Many times those changes are accompanied by a reorganization of the host population along ethnic lines, that is, by the creation of tourism- oriented-ethnicities. This article's purpose is to examine the relationship between tourism and ethnicity in theoretical terms and to contribute to a better academic understanding of ethnic tourism.
This thesis deals with religious tourism. The objectives of this study are firstly to understand what religious tourism is, who the tourists attracted to religious tourism are, what the destinations and motives for religious holidays are and what the future of religious tourism looks like. This study is limited to dealing with Christian religious tourism. There is a survey made to find out firstly how religious tourism is understood and what the important destinations for religious touri...
The author attempts to define the term ‘tourism landscape’. It is treated as an important attribute of tourism space therefore, apart from its definition, the author presents its characteristic features and various types of such spaces with differing tourism landscapes. The landscapes of tourism space are treated not only as tourism assets or attractions, but also as the consequences of tourism activity on the natural and cultural environment.
Although tourism attractions are a basic resource for long term tourism developments, they are not given the proper attention, both, theoretical and practical. Therefore, rare studies of tourism attractions, especially those with the ambition of creating a functional system of tourism attractions, attract special attention. The aim of this paper is to present a new system of tourism attractions. This new system is based on the review of published research on tourism attractions, particularly ...
Jensen, Martin Trandberg
• Audio methods enriches sensuous tourism ethnographies. • The note suggests five research avenues for future auditory scholarship. • Sensuous tourism research has neglected the role of sounds in embodied tourism experiences.......• Audio methods enriches sensuous tourism ethnographies. • The note suggests five research avenues for future auditory scholarship. • Sensuous tourism research has neglected the role of sounds in embodied tourism experiences....
Full Text Available The article titled Thematic Tourism vs. Mass Tourism in the Czech Republic is concerned with the relationship between thematic tourism, mass tourism and presuppositions of the tourism development. The authors aim is to compare the turnout of thematic tourism attractions and sights focused on mass tourism paying attention to presuppositions of the tourism development and barriers for the turnout of thematic monuments. Comparisons will be based on presuppositions of tourism development and will be based especially on the specifics of thematic tourism - as a marginal field within the tourism industry. The application part will focus on the comparison of sights with massive turnout in the Czech Republic and thematic landmarks as the subject of thematic tourism. Special attention will be paid to the comparison of the two most visited monuments in the Czech Republic as for mass tourism - the Charles Bridge, and the most visited monument as for thematic tourism - the hydro-power plant Dlouhé Stráně, a technical representative of thematic tourism. Both monuments were elected by general public on the list of Seven Wonders of the Czech Republic in 2013. The aim is to confirm / refute the hypothesis that quality preconditions of tourism development are essential for the development of tourism and visiting tourist attractions. The article will use secondary data analysis methods and author's own field research.
Full Text Available The dark tourism is a form of tourism that is not unanimously accepted by the whole society, but in spite of this fact, the practitioners of dark tourism is a viable segment. Indeed the concept that defines dark tourism is none other than death, and perhaps this is why it will always be a segment that will not be attracted by this form of tourism. Many questions about dark tourism arise. Among them: (1 is dark tourism an area of science attractive for researches? (2 which is the typology of dark tourism? (3 what are the motivating factors that determine practicing dark tourism? This paper provides a detailed analysis of publication behaviour in the field of dark tourism. The article also includes the main results obtained by achieving a quantitative marketing research among students of Sfantu Gheorghe University Extension in order to know their opinion, attitude towards dark tourism.
Full Text Available The objective of the present research is to develop a novel lubricant for Al-Cu-Mg P/M alloy and to address the effects of the lubricant and compaction pressure on sintered properties. A lubricant mixture consisting of Ethylene Bis Stearamide, Zn-Stearate, and fatty acid was newly developed in this study, and the de-lubrication behavior was compared with that of other commercial lubricants, such as Ethylene Bis Stearamide, Zn-Stearate, and Al-Stearate. Density and transverse rupture strength of sintered materials with each lubricant were examined, respectively. The microstructural analysis was conducted using optical microscope.
Full Text Available Abstract: Times are changing and so are the demands and expectations of the 'new' traveller, the search for different experiences, different adventures, different lifestyles has paved the way for this concept called the 'new tourism' Attention is being turned to exploring new frontiers or daring to go where traditional thought did not allow. "New" tourists however, are increasingly being seen to be environmentally sensitive, displaying respect for the culture of host nations and looking to experience and learn rather than merely stand back and gaze. "New" tourists are participators not spectators. Things that would never appear on the list of the "mass" tourist such as adventure, getting of the beaten track and mingling with the locals are now the foundations of the new tourist experiences. Responding to the shift in market dynamics towards a "New" style of tourist, a number of initiatives have or are likely to fuel the growth of experiential tourism, these include: network tourism initiatives; the development of interpretive highways; the explosion of interpretive centers;the latest trend towards regional base camps. A new era has arrived, and a new kind of tourism is emerging, sustainable, environmentally and socially responsible, and characterized by flexibility and choice. A new type of tourist is driving it: more educated, experienced, independent, conservation-minded, respectful of cultures, and insistent on value for money. Typically these tourists are turning away from travel and prefer to have a high level of involvement in the organisation of their trip.
Buda, Dorina; d'Hauteserre, Anne-Marie; Johnston, Lynda
Drawing on critical social and spatial theories of emotion and affect this article offers a contribution to the concepts of danger-zone and dark tourism through a focus on feelings. Research findings on tourism in the Hashemite Kingdom of Jordan and the West Bank (of the river Jordan) in Palestine
Stilling Blichfeldt, Bodil; Kvistgaard, Hans-Peter; Hird, John
course that is part of a Tourism Master’s program, where a major challenge is not only to teach students about change and change agents, but to teach them how change feels and ho w to become change agents. The c hange management course contains an experiment inspired by experiential teaching literature...... change in tourism in the future....
This paper has the starting point in the acknowledgement that a closer examination of the operational elements related to holiday packages may reveal advanced opportunities for advanced innovation. The investigation confirms that such opportunities exist in the intangible aspects of tourism...... products and production. Summarizing these findings, the paper proposes a framework that enables better insights into the nature of tourism innovation....
The aim of this graduation thesis was to analyze some possibilities of marketing communication in tourism. For this analize were chosen travel agencies in Tábor. The partial objects consisted in the analysis of supply of researched travel agencies including their marketing communication. There was found out also demand of products in tourism. After analyses were prepared some recommendations for improvement.
C-L. Chang (Chia-Lin); H-K. Hsu (Hui-Kuang); M.J. McAleer (Michael)
markdownabstract__Abstract__ This paper uses monthly data from April 2005 to August 2013 for Taiwan to propose a novel tourism indicator, namely the Tourism Conditions Index (TCI). TCI accounts for the spillover weights based on the Granger causality test and estimates of the multivariate BEKK
Bolwell, Dain; Weinz, Wolfgang
Outlines the background to poverty reduction approaches and how the ILO is involved within the context of Decent Work and the United Nations Millennium Development Goals. Recent developments in tourism and a vision for an inclusive, pro-poor tourism industry are summarized.
Dietvorst, A.G.J.; Ashworth, G.J.
In order to emphasize the dynamic character of the tourism-recreation product, an overarching concept is presented which integrates both supply and demand. The model shows the continuing transformation of the original tourism-recreation resource (either a landscape, a monument, an urban public
Hooman Dabidian; Mohammed Wafaa Al-Ani; Christopher Hassaan Francke; Ahmed Redwan
While it will require further political stability and security, tourism in Iraq stands to be a major growth sector. The Iraqi tourism sector is currently underdeveloped and in a state of neglect, due to decades of war, closed regimes and recurrent instability and insecurity. However, as Iraq continues to develop and stabilizes, it can begin to meet its tremendous potential as a global tour...
Recently, a link between rural tourism and poverty alleviation ..... intellectual springboard for development of goods and services, crafts, local foods, music, dance, ..... established tourism market as well as the positive attitude of the respondents ... improve the congruence between the rural destination image and the visitor.
Full Text Available Yacht tourism has become an important asset for the countries which consider tourism as a means of development due to its environment awareness, national and international investments, the volume of business, employment opportunities, foreign exchange income, socio-economic and socio-cultural impact, and an increasing number of investments and incentives for yacht tourism have made and used in a number of countries. In the presence of such rapid developments, the environmental damage caused by yacht tourism has been of importance for coastal countries, and action plans and special projects involving many countries have been developed in order to enhance the awareness of the sustainability of yacht tourism. Given that environment is not a limited source, it is blatant that national or international sustainable tourism practices have been essential for coastal countries and environmental threats are now so severe that they cannot be overlooked. The purpose of the study is to discuss sustainable tourism practices as a part of the measures to eliminate the negative impacts of yacht tourism and provide relevant suggestions.
Full Text Available The peculiarities of tourism in Khmelnytskyi region, its priority areas, types, including cultural-educational, environmental, sportrecreative and others have been revealed in the article. The basic tasks of tourism development in the region, aimed at the formation and protection of the tourism-recreational sector, market of competitive services, attraction of maximum number of tourists to the region, etc. have been cleared out. The attention is focused on the main tourist potential of Khmelnytskyi region, including National Nature Park «Podilski Tovtry», National historical-cultural nature reserve «Kamianets», «Samchyky», Medzhybizh regional historical-ethnographic museum-fortress, sanatorium-resort facilities based on mineral waters and others. The attention is paid to the increase in income from tourism. Traditional hospitality of the population of the region, especially in rural areas, provides the possibility to combine tourists’ accommodation with the study of rural customs and traditions directly in the villages. Tourism in Khmelnytskyi region will be attractive to all tourists who want to eat healthy food, to stay outdoors and enjoy the beauty of the region. Also the article tells us about the development of other directions and familiarizes tourists with other enticements of Khmelnytskyi region using the positive brand of Kamianets-Podilskyi. All three potential areas of tourism development (historical tourism in Kamianets-Podilskyi, recreational tourism on rivers, lakes and in the forests, as well as rural tourism can be combined within the global promotion of nature and traditions of the region. It is indicated that Khmelnytskyi is a promising tourist region of Ukraine. The main problems of the region are inadequate tourism infrastructure, accommodation facilities, food and roads. The experience of the tourism cluster «Oberih» (Protective Charm proves the perspectives of agritourism. Developing these two areas together, we
Karnaz, J.; Seeton, C.; Dixon, L.
Today’s refrigeration and air conditioning market is not only driven by the environmental aspects of the refrigerants, but also by the energy efficiency and reliability of system operation. Numerous types of compressor designs are used in refrigeration and air conditioning applications which means that different bearings are used; and in some cases, multiple bearing types within a single compressor. Since only one lubricant is used, it is important to try to optimize the lubricant to meet the various demands and requirements for operation. This optimization entails investigating different types of lubricant chemistries, viscosities, and various formulation options. What makes evaluating these options more challenging is the refrigerant which changes the properties of the lubricant delivered to the bearing. Once the lubricant and refrigerant interaction are understood, through various test methods, then work can start on collaborating with compressor engineers on identifying the lubricant chemistry and formulation options. These interaction properties are important to the design engineer to make decisions on the adequacy of the lubricant before compressor tests are started. This paper will discuss the process to evaluate lubricants for various types of compressors and bearing design with focus on what’s needed for current refrigerant trends. In addition, the paper will show how the lubricant chemistry choice can be manipulated through understanding of the bearing design and knowledge of interaction with the refrigerant to maximize performance. Emphasis will be placed on evaluation of synthetic lubricants for both natural and synthetic low GWP refrigerants.
Smed, Karina Madsen
" and the "others". The author discusses to which extent tourism discourse is global as the reception of it has been different depending on the context. Moreover, she reflects on the impact upon this global narrative that the new economic world order will have. The new and emergent economies lead to a flow......Tales of Tourism - Global Changes and tourism discourse by Karina Smed presents us with what has been the dominant discourse of tourism, i.e. a discourse which has had its roots in the West's economic and cultural hegemony and the problem of the formation of identity from the dichotomy "self...... of tourists in the opposite direction: from China, India and Russia to western countries and worldwide and this will probably change the concept of tourism and our idea of identities....
João Lopes, Maria; Dredge, Dianne
Very complex yet highly integrated business logics characterise cruise tourism with shore excursions frequently identified as a key source of value. This paper presents a case study of cruise tourism and shore excursion planning in Copenhagen, Denmark. The aim of this paper is to investigate...... the characteristics of cruise tourism, itinerary and shore excursion planning with a view to understanding the value generated from cruise tourism shore excursions. We argue that economic value is a blunt measure, and there are other types of value, positive and negative, that are also generated. This research...... reveals that a range of local conditions and structural characteristics create barriers and opportunities for generating different types of value. Using a case study of shore excursions in Copenhagen, the Baltic’s most important port, this paper explains the dynamics between cruise tourism and shore...
Ren, Carina Bregnholm
of qualitative research has meant a need to question and redefine criteria and research standards otherwise used in tourism research, as qualitative approach does not (seek to) conform to ideals such as truth, objectivity, and validity retrieved in the positivist sciences. In order to develop new ways by which......, the understanding of qualitative research as unable (or rather unwilling) to deliver the types of outcome which “explain and predict” tourism, has impacted upon its ability to gain general acceptance. Only slowly has tourism research made room for the changes in social and cultural sciences, which since the 1960s......Qualitative research, tourism Qualitative research refers to research applying a range of qualitative methods in order to inductively explore, interpret, and understand a given field or object under study. Qualitative research in tourism takes its inspiration primarily from the cultural and social...
Full Text Available This work aims to present the gastronomic tourism, which is a new conception and form of tourism, dealt with separately from other forms of tourism, which combines features of cultural, thematically and durable tourism, aiming at meeting and educating tourists in traditional culinary arts, bringing benefits to the local people and maintaining various sectors of the economy. Gastronomic tourism consolidates, in this vision, as a key element in the diversification of the tourism supply and stimulation of the development of local regional, and national economy, with values of sustainability based on local and authentic products, in accordance with the current trends of cultural tourism consumption.
this particular shortcoming of the current MIL specification lubricant lineup . Perameter: Units: Average Std. Dev. Average Std. Dev. Average...variations of each 0.2-second time block of all engagements. Test Number The run number listed on this report is a random number and is not sequential ...is not sequential . Only SwRI® can link this run number to JDQ-96, L0254054, August 3, 2010. Page 2 of3 John Deere JDQ-96 Performed using 1400
lubricant into uneven patches of varnish . This varnish , along with the file-like action of the exposed ball carbides on the relatively softer races, can...its structure. Fluorine , one of the most reactive elements, reacts with graphite without combustion from about 790’F to 1022°F, forming a grey-colored...to allow for molding and machining after molding. 0 Method 2 (Hughes) Impregnating these dense weaves with a Thermid 600 polyimide varnish
Ciuperca, I. S.; Feireisl, Eduard; Jai, M.; Petrov, A.
Roč. 75, č. 3 (2017), s. 391-414 ISSN 0033-569X EU Projects: European Commission(XE) 320078 - MATHEF Institutional support: RVO:67985840 Keywords : free boundary problems * lubrication * asymptotic approach * Stokes equation Subject RIV: BA - General Mathematics OBOR OECD: Pure mathematics Impact factor: 0.788, year: 2016 http://www.ams.org/journals/qam/2017-75-03/S0033-569X-2017-01468-X/
Pendleton, Alice Mae
This research investigated biofluid lubrication related to artificial joints using tribological and rheological approaches. Biofluids studied here represent two categories of fluids, base fluids and nanostructured biofluids. Base fluids were studied through comparison of synthetic fluids (simulated body fluid and hyaluronic acid) as well as natural biofluids (from dogs, horses, and humans) in terms of viscosity and fluid shear stress. The nano-structured biofluids were formed using molecules having well-defined shapes. Understanding nano-structured biofluids leads to new ways of design and synthesis of biofluids that are beneficial for artificial joint performance. Experimental approaches were utilized in the present research. This includes basic analysis of biofluids' property, such as viscosity, fluid shear stress, and shear rate using rheological experiments. Tribological investigation and surface characterization were conducted in order to understand effects of molecular and nanostructures on fluid lubrication. Workpiece surface structure and wear mechanisms were investigated using a scanning electron microscope and a transmission electron microscope. The surface topography was examined using a profilometer. The results demonstrated that with the adding of solid additives, such as crown ether or fullerene acted as rough as the other solids in the 3-body wear systems. In addition, the fullerene supplied low friction and low wear, which designates the lubrication purpose of this particular particle system. This dissertation is constructed of six chapters. The first chapter is an introduction to body fluids, as mentioned earlier. After Chapter II, it examines the motivation and approach of the present research, Chapter III discusses the experimental approaches, including materials, experimental setup, and conditions. In Chapter IV, lubrication properties of various fluids are discussed. The tribological properties and performance nanostructured biofluids are
Mamzer Bruneel, Marie-France
The ethical debate surrounding transplant practices questions our societies. International recommendations set out numerous precautions which must be taken to ensure that donors act with their free will. While in most countries, including France, organ donation is a voluntary and non-commercial act, a black market exists in the world resulting in the trafficking of organs and tragic transplant tourism. Copyright Â© 2016. Publié par Elsevier Masson SAS.
Evdokimov, A.Yu.; Dzhamalov, A.A.; Lashkhi, V.L.
This planet is undergoing a severe ecological crisis. The consequent problems include not only how to prevent the destruction of contemporary civilization, but also how to preserve mankind as a biological species. In the onset of this crisis, used lubricants (ULs) play a role that is by no means the least important. Every year, the worldwide discharge of petroleum products to the biosphere is approximately 6 million tonnes, of which more than 50% consists of ULs. The ecologically dangerous components of both commercial lubricants and used lubricants are the polycyclic aromatic hydrocarbons (PAHs) that are originally present in crude oil; polyhalobiphenyls, mainly polychlorobiphenyls (PCBs) of anthropogenic origin; sulfur- and chlorine-containing additives; a number of biocides; organic compounds of metals (lead, barium, antimony, zinc); and nitrites. These substances are distributed in the atmosphere, water, and soil, entering the food chain and appearing in foodstuffs. Moreover, hydrocarbons of petroleum and synthetic oils with a low degree of biodegradability (10-30%) accumulate in the environment and may shift the ecological equilibrium (accelerated multiplication and mutation of microorganisms that assimilate petroleum products). 32 refs., 1 fig
Social Tourism has gained wide recognition for the benefits it brings to citizens who would otherwise not be able to participate in tourism. Social tourism also delivers benefits to the tourism industry, to destinations and to provide a positive return on investment for governments. However, whilst policy makers extol the virtues of social tourism, programmes have struggled to remain resilient under pressure on public finances caused by the Global Financial Crisis. This paper reviews the cont...
Andreu, Rosario; Claver, Enrique; Quer, Diego
The growth of China’s outbound tourism is a source of both threats and opportunities for European countries. Therefore, European tourism institutions and companies should focus their attention on this emerging market. The objective of this paper is to analyze the consequences that the boom in Chinese tourism could have for European tourism. A critical analysis provides the basis for actions and measures that the main European tourism institutions and companies should adopt i...
Andreu, Rosario; Claver-Cortés, Enrique; Quer, Diego
The growth of China’s outbound tourism is a source of both threats and opportunities for European countries. Therefore, European tourism institutions and companies should focus their attention on this emerging market. The objective of this paper is to analyze the consequences that the boom in Chinese tourism could have for European tourism. A critical analysis provides the basis for actions and measures that the main European tourism institutions and companies should adopt in order to face th...
Andersen, Ida Marie Visbech; Blichfeldt, Bodil Stilling; Liburd, Janne J.
explicitly requested nominations for sustainable tourism projects. A comparison between academic sustainability discourse and the approved projects suggests that tourism actors do not address sustainable tourism development as a holistic concept. Long-term perspectives are largely absent, whereas economic...... benefits are emphasized. Key findings also indicate weak political leadership in the envisaged transfer towards sustainable tourism development....
Sinji Yang; Lori Pennington-Gray; Donald F. Holecek
Proponents of Alternative Tourism overwhelmingly believe that alternative forms of tourism development need to be small in scale. Inasmuch as tourists' demand has great power to shape the market, the issues surrounding the tourism development scale deserve further consideration. This paper discusses the implications and effects of the tourism development scale on...
Aizenberg, Joanna; Aizenberg, Michael; Cui, Jiaxi; Dunn, Stuart; Hatton, Benjamin; Howell, Caitlin; Kim, Philseok; Wong, Tak Sing; Yao, Xi
The present disclosure describes a strategy to create self-healing, slippery self-lubricating polymers. Lubricating liquids with affinities to polymers can be utilized to get absorbed within the polymer and form a lubricant layer (of the lubricating liquid) on the polymer. The lubricant layer can repel a wide range of materials, including simple and complex fluids (water, hydrocarbons, crude oil and bodily fluids), restore liquid-repellency after physical damage, and resist ice, microorganisms and insects adhesion. Some exemplary applications where self-lubricating polymers will be useful include energy-efficient, friction-reduction fluid handling and transportation, medical devices, anti-icing, optical sensing, and as self-cleaning, and anti-fouling materials operating in extreme environments.
... After the transplant Preventing rejection Post-transplant medications Types of immunosuppressants Switching immunosuppressants Side effects Other medications Generic and brand name drugs Post-transplant tests Infections and immunity Lifestyle changes Health concerns Back to work or ...
Erika KULCSÁR; PhD Rozalina Zsófia SIMON
The dark tourism is a form of tourism that is not unanimously accepted by the whole society, but in spite of this fact, the practitioners of dark tourism is a viable segment. Indeed the concept that defines dark tourism is none other than death, and perhaps this is why it will always be a segment that will not be attracted by this form of tourism. Many questions about dark tourism arise. Among them: (1) is dark tourism an area of science attractive for researches? (2) which is the typology of...
Anthony E. Somers; Patrick C. Howlett; Douglas R. MacFarlane; Maria Forsyth
Due to ever increasing demands on lubricants, such as increased service intervals, reduced volumes and reduced emissions, there is a need to develop new lubricants and improved wear additives. Ionic liquids (ILs) are room temperature molten salts that have recently been shown to offer many advantages in this area. The application of ILs as lubricants in a diverse range of systems has found that these materials can show remarkable protection against wear and significantly reduce friction in th...
Olsson, David Dam; Bay, Niels; Andreasen, Jan Lasson
Punching/blanking is one of the tribologically wise most severe metal forming processes.Insu $cient lubrication leads to heavy pick-up of work piece material on the punch stem,bad tolerances and eventual breakdown of the punch due to excessive backstroke force,especially in case of tribologically...... of alternative lubricants the present paper describes a new lubricant test for punching....
The isothermal lubrication of the following composition is suggested, wt. %: aluminium powder 4-6, iron scale 15-25, vitreous enamel up to 100. The lubricant improves forming and decreases the danger of the metal fracture when titanium alloys working. It is advisable to use the suggested lubrication when stamping thin-walled products of titanium alloys at the blank temperature from 700 to 1000 deg C [ru
Heike A. Schänzel
Full Text Available Purpose – Families represent a large and growing market for the tourism industry. Family tourism is driven by the increasing importance placed on promoting family togetherness, keeping family bonds alive and creating family memories. Predictions for the future of family travel are shaped by changes in demography and social structures. With global mobility families are increasingly geographically dispersed and new family markets are emerging. The purpose of this paper is to discuss the trends that shape the understanding of families and family tourism. Design/methodology/approach – This paper examines ten trends that the authors as experts in the field identify of importance and significance for the future of family tourism. Findings – What emerges is that the future of family tourism lies in capturing the increasing heterogeneity, fluidity and mobility of the family market. Originality/value – The paper contributes to the understanding about the changes taking place in family tourism and what it means to the tourism industry in the future.
Zadel, Zrinka; Bogdan, Sinisa
The subject of analysis in the paper is economic impact of cultural tourism and identification of the main factors which directly affect cultural tourism revenues. Most countries do not have a statistical system of monitoring and analysing individual factors of cultural tourism such as the number of arrivals of cultural tourists and consumption of cultural tourists. Therefore, it is hard to assess the economic impact of cultural tourism. In cultural tourism, cultural assets are prepared and p...
The growth of the tourism product development, alternative and special interest developed nowdays for example religious, sport tourism, and is rapidly growing these days is voluntourism.It is a form of tourism product interest the tourist especially from the wealth countries which have the awareness to support quality development in countries that are developing that made sustainable tourism development benefit and a real advantage for the local community.Bali as a growing tourism...
Green Tourism Marketing Model research as efforts to develop environmentally friendly tourism destination, the synergy of government, business and community participation become the driving force of tourism product development with highly competitive. In the long term, this research aims to provide the marketing concept of green tourism as economic development efforts and strengthen the environment (eco-growth) through the development of green tourism marketing models. The ...
This thesis is about the dark tourism and destination marketing. The aim of the thesis is to display how these two terms can be combined. The term dark tourism is a relatively new research area; therefore the thesis will provide an outlook of the current situation of dark tourism. It starts with the beginning of dark tourism and continuous to the managerial aspects of dark tourism sites. The second part of the theoretical background is about destination marketing. It provides an overvie...
Scientific tourism is a type of tourism that is being accomplished by its purpose; it is directly linked to the geographical, archaeological, museum, ethnological, astronomical tourism types. Human being has a great curiosity about the Universe, the stars and other heavenly bodies. In this regard, astronomical tourism is the youngest, but the most popular type.
... environment. To test this approach, UES and Cleveland State University have conducted experiments to form cesium oxythiotungstate, a high temperature lubricant, on Inconel 718 surface from composite coatings...
Wong, P.K.; Chan, W.L.; Wang, J.; Wong, C.K.
Used lubricating oil is more toxic than crude oil and fuel oil since it contains comparatively high levels of heavy metals and polycyclic aromatic hydrocarbons (PAHs). No detail toxicological study has been conducted to evaluate the hazards of used lubricating oil to the environment. This study reports a battery of bioassays using bacteria (Microtox test and Mutatox test), algae, amphipod and shrimp larvae to determine the toxicity of water soluble fraction of used lubricating oil. The results will be used to formulate a complete and extensive ecotoxicological assessment of the impacts of used lubricating oil on aquatic environment
Shepelevskii, A. A.; Esina, A. V.; Voznyakovskii, A. P.; Fadin, Yu. A.
The lubrication of detonation-synthesis diamond additives in lubricant composites has been discussed. The mechanism of interaction between nanodiamonds and friction surface has been shown to depend on the applied load. Two models of the lubrication of nanodiamonds and the conditions for their validity have also been proposed.
Lunt, Neil; Horsfall, Daniel; Hanefeld, Johanna
The scoping review focuses on medical tourism, whereby consumers elect to travel across borders or to overseas destinations to receive their treatment. Such treatments include: cosmetic and dental surgery; cardio, orthopaedic and bariatric surgery; IVF; and organ and tissue transplantation. The review assesses the emerging focus of research evidence post-2010. The narrative review traverses discussion on medical tourism definitions and flows, consumer choice, clinical quality and outcomes, and health systems implications. Attention is drawn to gaps in the research evidence. Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
Molnar Elisabeta; Bunghez Magdalena; Stanciulescu Gabriela Cecilia
Abstract: Times are changing and so are the demands and expectations of the 'new' traveller, the search for different experiences, different adventures, different lifestyles has paved the way for this concept called the 'new tourism' Attention is being turned to exploring new frontiers or daring to go where traditional thought did not allow. "New" tourists however, are increasingly being seen to be environmentally sensitive, displaying respect for the culture of host nations and looking to ex...
Giacomo Corna Pellegrini
Full Text Available The paper suggests that Tourism and Geography are closely intertwined, because tourists are in search of experience and geographer has as its main purpose the pursuit of knowledge. Models and hypotheses need always to be verified in theterritorial context of daily fieldwork, geographical interpretation and travel experience, were Geography and Tourism entwined in reciprocal relationship of personal attitude, nature, and field research. Environmental responsibility is another and common field were Geography can change and develop Tourism in the same mutual support in a continuous and mutual way. The case studies support it fully.
Tribe, John; Liburd, Janne J.
This conceptual study addresses the significant need for every mature field of knowledge to understand itself. It builds upon previous studies of the epistemology and ontology of tourism by critiquing, synthesising, discarding, re-ordering and adding material. Its contribution is an original...... reconceptualisation of the structure, systems, processes and outcomes that define the field of tourism. These are explained by the creation of a model and detailed analysis that examines knowledge space, the knowledge force-field, knowledge networks, four key domains in knowledge creation and their interrelationships....... Finally the model is used to examine some of the key challenges and consequences that the knowledge system reveals for tourism and its research....
Dark tourism eli synkkä matkailu on matkustamista kohteisiin, jotka liittyvät jollain tavalla kuolemaan, kauhuun, kärsimykseen tai katastrofeihin. Dark tourism on ilmiönä suhteellisen tuore, mutta sen historia juontaa juurensa jo antiikin ajan gladiaattoritaisteluihin. Ilmiötä on tutkittu jonkin verran ja siitä on tehty muutamia opinnäytetöitä. Yksi tunnetuimmista ja eniten vierailluista dark tourism -kohteista on Auschwitzin keskitysleiri. Auschwitz aloitti toimintansa vuonna 1940 ja le...
Full Text Available International tourism has grown rapidly nowdays, contributing to the growth of the global economy. The purpose of this essay is to identify and analyze stereotypical factors in the development of strategies concerning the offer for the tourism industry: the image of a tourist destination, brand, country of origin and customer behaviour. Documentary study was the research method used: representative articles were analysed, as recent as possible, to determine the factors mentioned above. Professionals in the industry of tourism need to understand cultural differences between tourists, as well as those of the host country, to be able to create tourist reception offers that live up to the standards expected by clients.
The nature, extent, and implications of innovation in tourism are increasingly investigated in academic research, but the policies that affect these transformations in the industry and at tourism destinations are not equally well conceptualised theoretically or analysed empirically. The purpose...... of this article is, in an analysis of the literature, to interpret the rationale behind innovation policy, and to explain the persisting challenges related to acquisition of an informed foundation for policies based upon quantitative and qualitative inquiries. Observed in a historical perspective, innovation...... framework of policy instruments for innovation in tourism. New generations of policies instigate a mainstreaming of the innovation agenda in ways that proceed beyond the traditional policy concepts....
Lubricating compositions including crystalline boric acid and a base lubricant selected from oils, greases and the like. The lubricity of conventional oils and greases can also be improved by adding concentrates of boric acid.
Gazvoda, S.; Andreasen, Jan Lasson; Olsson, David Dam
Strip reduction testing of lubricants developed during ENFORM project. Experiments were conducted with the strip reduction test  in order to classify experimental lubricants, developed during concerned project. One reference lubricant was used during testing....
Disclosed is a nuclear fuel handling grapple carriage having a bearing with a lubricant reservoir that is capable of being refilled when the bearing and reservoir are submerged in a lubricant pool. The lubricant reservoir supplies lubricant to the bearing while the bearing allows a small amount of lubricant to leak passed appropriately placed seals creating a positive out flow of lubricant thereby preventing foreign material from entering the bearing
Buda, Dorina; Martini, Annaclaudia; Garcia, Luis-Manuel; Lowry, Linda
Conducting qualitative research in tourism studies entails engaging with an entire approach, a set of methods that shape project design, conceptual frameworks, data analysis, and anticipated outcomes. Standard qualitative methods are individual interviews, focus groups and ethnography. Solicited
Hjalager, Anne Mette
Based on the empirical evidence provided by an evaluation study of the EU Objective 5b programme measures* for the expansion of rural tourism, this article discusses the impact of rural tourism on agricultural holdings. It is shown that the financial returns most often do not measure up either...... to the expectations of the politicians or to that of the farmers. In some respects rural tourism contributes positively to the innovation of the tourist product since its small scale, 'green' issues and special facilities differentiate the product from others. But the unleashing of real potential is hampered...... by the fact that farmers tend to give priority to traditional agriculture and by the fact that industrialized agriculture is not easily combined with the commodifying of agricultural traditions for tourism. The community level inter-organizational innovations which are designed to ensure the marketing...
Carlsen, Jack; Edwards, D; Forde, P
Innovation is the key to responding to the future challenges that confront all sectors of society and the economy, and especially in tourism. Within tourism, there are numerous corporations and destinations around the world that are responding to the ecological, social and economic challenges...... for an integrated overview of the drivers, barriers, processes and networks for innovation. The cases have been prepared for use in research and teaching of innovation, and the analysis and case notes are both designed to facilitate discussion and further investigation of innovation, not only in tourism......, but in other economic sectors as well. Being an online publication, it is expected that updates in successive editions of this first book will add further to the description and analysis of innovation for sustainable tourism and hence provide a resource for those seeking to enhance the teaching, research...
Full Text Available The paper presents analyses of the current condition, trends and opportunities for the apiculture development and its relation to tourism in Bulgaria. Beekeeping is considered as a branch of agriculture since its formation after the liberation to the present day and in its dynamics of development for the last 5 years. Resource base including traditions, state, production and marketing of honey is presented. Data from the National Statistics Institute, Ministry of Agriculture, Food beekeepers' associations, processors and traders of honey and bee products, the Ministry of Tourism and tourism industry organizations is analyzed and discussed. Beekeeping is represented in the relation as a resource for development of apitourism, as untraditional attractive specialized type of tourism, which can support farmers through non-agricultural practices. The paper aimed at assisting companies and individuals in the field of agribusiness and apitourism for the realization of bee products and services.
Full Text Available In sustainable development, tourism plays a vital role, with a high contribution in Romania's economic recovery and relaunch. Raising the tourism product of the values enshrined in the corresponding standards and preferences of foreign tourists involves initiating and promoting actions that include, on one hand, workflows education and training of a mentality appropriate current type of development, and on the other hand , emphasizing sustainable development in regions of tourist’s reception. Based on these considerations, this paper aims to determine how the tourism products must be designed from the point of view of marketing, to comply with the principles of sustainability. To this end we analyzed research on consumption of tourist’s services in Romania, made by INSOMAR, and an analysis of the Romanian tourism seen by strangers.
Pasgaard, Jens Christian
the potential of ‘the extraordinary’ tourism-dominated space. As highlighted in the introduction, this report does not present any systematic analysis of strategic planning processes; neither does it provide any unequivocal conclusions. Rather, the report presents a collection of so-called ‘detours......The main purpose of this report is to explore and unfold the complexity of the tourism phenomenon in order to qualify the general discussion of tourism-related planning challenges. Throughout the report I aim to demonstrate the strategic potential of tourism in a wider sense and more specifically......’ – a collection of theoretical discussions and case studies with the aim to inspire future strategic planning. Due to the complexity and heterogeneity of the phenomenon I use a non-linear and non-chronological report format with the ambition to create a new type of overview. In this regard the report is intended...
Full Text Available The urban area covers a high density of structures developed by man compared to the surrounding areas. Cultural tourism includes, on the one hand, cultural tourism in urban areas – particularly historical towns and cities with cultural sites such as museums or theatres – and, on the other hand, cultural tourism in rural areas – where its main goal is to focus on communities, festivals, rituals, and traditions. From the point of view of the practice of urban or rural cultural tourism, tourists are, in most cases, presented what they wish to see: thus, authenticity can turn into inauthenticity and what is promoted is vulgar art or improper beauty, surrogate art or even pseudo-art – kitsch, represented by souvenirs that have nothing to do with true art.
Jensen, Jens Friis; Sørensen, Flemming
This paper discusses how front-line employees can play an important role in innovation processes that lead tourism companies from service production to experience creation. The increasing focus on experiential value by customers in general (Sundbo and Sørensen, 2013) puts pressure on service...... companies to move from functional service production to creating experiences (Pine and Gilmore, 2013). This is also the case in tourism companies. In tourism, most encounters between employees and tourists operate on a service logic (Sørensen and Jensen, 2015). Thus, we suggest there is a value potential...... in developing such encounters into experience encounters focusing on the co-creation of experiential value. While frontline employees are central for service quality they are mostly not included in systematised innovation processes in tourism companies. These companies are often hierarchically organised...
National Aeronautics and Space Administration — Ionic liquids are candidate lubricant materials. However for application in low temperature space mechanisms their lubrication performance needs to be enhanced. UES...
Gupta, Vijay; Das, Poonam
The term 'medical tourism' is under debate because health care is a serious business and rarely do patients combine the two. India is uniquely placed by virtue of its skilled manpower, common language, diverse medical conditions that doctors deal with, the volume of patients, and a large nonresident Indian population overseas. Medical tourism requires dedicated services to alleviate the anxiety of foreign patients. These include translation, currency conversion, travel, visa, posttreatment care system,and accommodation of patient relatives during and after treatment.
The determining element in developing the Romanian tourism is represented by the definition of a realistic conception concerning the capitalization of the touristic potential and the objectives of its development, taking into account the international tendencies, mostly the European ones, regarding the travelling options and the ways of spending holidays requested by the foreign tourists as well as the local ones. In Romania, tourism is also considered an export industry, generating exchanges...
Summary Tourism can have a broad range of impacts, including impact on the economy, on the natural and built environment, on the local population, and on visitors themselves. This PhD thesis discussed the measurement of regional economic impacts of tourism, including impacts on output, value added, and employment caused by visitor expenditure. The focus was on the choice between models that can be used to calculate these regional economic impacts and the data requirements, usage, and further ...
Balin, A.I.; Tarasevich, V.B.; Veretenova, T.N.
A study was carried out and tehcnology developed for producing sulfur-nitrogen containing additives of the type of aminodisulfide by interaction of beta, beta-dichlordialkyl (aryl) disulfides with diethanolamine in a medium of sulfur-diethanolamine. The 2,2'-bis-(diethanol)-dialkyl(aryl) disulfides obtained do not hydrolyze in aqueous soltuions of alkalis, exhibit rather high antiscoring properties and are recommended for tests as active additives of high pressure to SOZH and technological lubricants of the oil and emulsion types.
Full Text Available The indicators, precisely describing the linkages between tourism and the environment, social and cultural base, are not easily available. How ever, some relevant organizations (WTO, EU, OECD, etc., institutions and experts, have been hardly working to create the indicators of sustainable tourism. Whereas the economic objectives are easily defined by the use of the traditional indicators used in national and business economics, it is very difficult to identify widely applicable environmental, social and cultural indicators. In order to stimulate and alleviate the process of sustainable tourism development, EU created the list of comparative indicators of sustainable tourism. In preparing this list, special attention is paid to identification of valid indicators of real tourism impacts on the social and cultural environment (the entire set of traditions, customs, history, hospitality and culture that characterize a given area, that is a very complex task. Assuming the fact that the related indicators have been analyzed in many European countries, this paper is focused on applying the related indicators in research of tourism development in villages of the Kosjerić community. .
Sivebæk, Ion Marius; Jakobsen, J.
Glycerol has been recognised as an excellent diesel fuel and lubricant. It is a liquid that can originate from the transesterification of plant oil that also results in plant oil metyl (or ethyl) ester (biodiesel). Machine elements lubricated by glycerol show very low friction, in fact lower than...
Zhou, Yan; Qu, Jun
In pursuit of energy efficiency and durability throughout human history, advances in lubricants have always played important roles. Ionic liquids (ILs) are room-temperature molten salts that possess unique physicochemical properties and have shown great potential in many applications with lubrication as one of the latest. While earlier work (2001–2011) primarily explored the feasibility of using ILs as neat or base lubricants, using ILs as lubricant additives has become the new focal research topic since the breakthrough in ILs’ miscibility in nonpolar hydrocarbon oils in early 2012. This work reviews the recent advances in developing ILs as additives for lubrication with an attempt to correlate among the cationic and anionic structures, oil-solubility, and other relevant physicochemical properties, and lubricating behavior. Effects of the concentration of ILs in lubricants and the compatibility between ILs and other additives in the lubricant formulation on the tribological performance are described followed by a discussion of wear protection mechanism based on tribofilm characterization. As a result, future research directions are suggested at the end.
lubrication characteristic is dominant via ‘selfhealing’ mechanism. The glycosylated FpHYD5 revealed a better lubrication than HFBI. Two type II hydrophobins function more favorably compared to synthetic amphiphilic copolymer, PEO-PPO-PEO, with a similar molecular weight. This is ascribed to higher amount...
Crutchley, Ian [Innospec Fuel Specialties, Ellesmere Port (United Kingdom); Green, Michael [Intertek Lintec ShipCare Services, Darlington (United Kingdom)
This article from Innospec Fuel Specialties, Ellesmere Port, UK, and Intertek Lintec ShipCare Services, Darlington, UK, examines the lubricity characteristics of marine distillate fuels available today in relation to the requirements and limits imposed in ISO8217:2010. It will estimate expected failure rates and also asses the perceived relationship between lubricity, sulphur content and viscosity. (orig.)
Hjalager, Anne Mette
Over the past couple of years, the term "innovation" has increasingly been used to described the development behaviour of tourism enterprises, destinations and the tourism sector. This article discusses various definitions. Examples of major changes in the tourism sector are given within the fram......Over the past couple of years, the term "innovation" has increasingly been used to described the development behaviour of tourism enterprises, destinations and the tourism sector. This article discusses various definitions. Examples of major changes in the tourism sector are given within...... on the industry itself, but take into account the driving forces of other business sectors and the public sector....
Tremblay, Y. [Petro-Canada, Calgary, AB (Canada)
With the significant investments in wind turbine equipment, companies need to exercise due diligence when it comes to the types of lubricants and fluids used. Mechanical and equipment issues can often be eliminated with improved maintenance practices and the appropriate selection of lubricants. This presentation discussed lubricants as being the lifeblood of wind turbines. The presentation first provided an overview and discussed wind turbine trends and application trends. The technical aspects of fluid formation were presented. Lubrication maintenance practices and oil monitoring were discussed. Last, key industry tests, and OEM specifications for bearings, gearboxes, and wind turbines were identified. It was concluded that improved maintenance practices in combination with the correct lubricant selection can address several operating problems. figs.
Bay, Niels; Olsson, David Dam; Andreasen, Jan Lasson
appearing in different sheet forming operations such as stretch forming, deep drawing, ironing and punching. The laboratory tests have been especially designed to model the conditions in industrial production. Application of the tests for evaluating new lubricants before introducing them in production has......Sheet metal forming of tribologically difficult materials such as stainless steel, Al-alloys and Ti-alloys or forming in tribologically difficult operations like ironing, punching or deep drawing of thick plate requires often use of environmentally hazardous lubricants such as chlorinated paraffin...... oils in order to avoid galling. The present paper describes a systematic research in the development of new, environmentally harmless lubricants focusing on the lubricant testing aspects. A system of laboratory tests has been developed to study the lubricant performance under the very varied conditions...
Okita, T; Hsu, E; Aizawa, K; Nakada, H; Toya, W; Matsui, K
In comparison with foreign countries, living-organ transplantations (LOT) have been performed more frequently than dead organ transplants, including brain-dead organ transplantation (BOT) in Japan. This situation has given rise to organ transplantation tourism. Therefore, we clarify laypersons' preferences regarding organ transplantation that are producing the current situation in Japan, to suggest a possible framework for further efforts. Voluntary completion of a quantitative and anonymous survey was promoted online (a sample size of 1030). The questionnaire had two types of variables concerning demographic characteristics and organ transplantation-related issues. LOT was favored over BOT. However, for willingness to donate to family members, the participants showed a significantly more positive attitude toward brain-dead organ donors (BODs) than living organ donors (LODs). In the evaluation of each transplantation technology, BOT and LOT were positioned in the middle, between transplantation that does not depend on others and the utilization of animal organs. Although LOT was favored over BOT, for participants hypothesized to be in a position to donate and receive organs, BODs received a conversely better reputation than LODs. Our survey and discussion suggest that the present conditions of organ transplantation in Japan might be because there is a lack of deliberation on transplantation tourism and LOT. Therefore, more surveys concerning LOT cases and the implications of avoidance of organs from brain-dead bodies, coupled with more discussions based on these surveys, are necessary to formulate a Japanese transplantation policy for the future. Copyright © 2017 Elsevier Inc. All rights reserved.
Full Text Available [First paragraph] What’s Love Got To Do with It? Transnational Desires and Sex Tourism in the Dominican Republic. Denise Brennan. Durham NC: Duke University Press, 2004. ix + 280 pp. (Paper US$ 21.95 Behind the Smile: The Working Lives of Caribbean Tourism. George Gmelch. Bloomington: Indiana University Press, 2003. x + 212 pp. (Paper US$ 19.95 New research on Caribbean tourism solidly locates it within the regional shift from “incentive-induced exports” like bananas to “service-based exports” like data processing, offshore finance, and novel forms of mass tourism (Mullings 2004:294; Duval 2004. Earlier studies may have made mention of the similarities between plantation economies and tourism development, but new models like the all-inclusive resort demonstrate a near identity of form and structure with plantation systems: foreign dominance over ownership and profit leaves little multiplier effect for the Caribbean islands playing host to enclaved resorts. Agricultural exports have been in free fall since the end of preferential trade protocols, and export manufacturing after the North American Free Trade Agreement is in steep decline. If new service economies seemed to offer a solution to economic and social disorder, the reaction to the events of September 11, 2001 demonstrated the fragility of service-based exports and, in particular, of new kinds of tourism. It took four years for international tourism to rebound to pre-9/11 levels;1 with the perceived threat of SARS and avian flu, as well as the Iraq war and the weak U.S. dollar, official projections of the industry’s near future are “cautiously optimistic.”2
Rabontu Cecilia Irina; Vasile Madalina Cristina
It is discussing,increasingly more often, in contemporary tourism, about new elements that enhances the appearance and development of new forms of tourism, including dark tourism which is based on the increasingly desire of modern tourist to achieve spiritual journeys, which have as attractions- deaths, disasters, atrocities, torture methods and other such issues. This subject has awoke our interest because we can find in Romania demand for this form of tourism but also various po...
Full Text Available The development of sustainable tourism is facing the difficulty of applying a contradictory discourse, especially when this occurs in the context of higher tourist concentrations and where the tourist flows are becoming increasingly intense. One of the ways to approach sustainable tourism and its context is to consider tourism practices. Moreover, one of the ways to reach its objectives is to encourage an attitude of reflection among tourists within the context of so-called reflective tourism.
Nemec Rudež, Helena; Vodeb, Ksenija
The paper investigates residents’ perceptions of tourism impacts in Koper and Piran municipality which are located on the Slovenian coast. The two municipalities have different tourism concentration defined as the ratio between the number of tourists and the number of residents. Specifically, the study attempts to explore differences between tourism impacts in the two municipalities. For the purpose of this study, tourism impacts are divided into economic, socio-cultural and environmental. Pr...
Macià Serra i Serra
This article argues that while cycle tourism remains only a small sector within sustainable tourism, it has great growth potential and attractive characteristics for the communities that engage in it. Based on this thesis, first, a description is given of cycle tourism, its characteristics, evolution and impacts. Second, its implementation through public policies over the past two decades is analysed. Third, the way cycle tourism has developed in various countries is examined, along with w...
C-L. Chang (Chia-Lin); H-K. Hsu (Hui-Kuang); M.J. McAleer (Michael)
textabstractThe paper uses monthly data on tourism related factors from April 2005 - June 2016 for Taiwan that applies factor analysis and Chang’s (2015) novel approach for constructing a tourism financial indicator, namely the Tourism Financial Conditions Index (TFCI). The TFCI is an adaptation
The Scientific Tourism is relatively new direction in the world, however it already has managed to gain great popularity. As it is, it has arisen in 1980s, but its ideological basis comes from the earliest periods of the human history. In Armenia, it is a completely new phenomenon and still not-understandable for many people. At global level, the Scientific Tourism has several definitions: for example, as explains the member of the scientific tourist centre of Zlovlen Mrs. Pichelerova "The essence of the scientific tourism is based on the provision of the educational, cultural and entertainment needs of a group of people of people who are interested in the same thing", which in our opinion is a very comprehensive and discreet definition. We also have our own views on this type of tourism. Our philosophy is that by keeping the total principles, we put the emphasis on the strengthening of science-individual ties. Our main emphasis is on the scientific-experimental tourism. But this does not mean that we do not take steps to other forms of tourism. Studying the global experience and combining it with our resources, we are trying to get a new interdisciplinary science, which will bring together a number of different professionals as well as individuals, and as a result will have a new lore. It is in this way that an astronomer will become an archaeologist, an archaeologist will become an astrophysicist, etc. Speaking on interdisciplinary sciences, it's worth mentioning that in recent years, the role of interdisciplinary sciences at global level every day is being considered more and more important. In these terms, tourism is an excellent platform for the creation of interdisciplinary sciences and, therefore, the preparation of corresponding scholars. Nevertheless, scientific tourism is very important for the revelation, appreciation and promotion of the country's historical-cultural heritage and scientific potential. Let us not forget either that tourism in all its
Cioca, L. I.; Giurea, R.; Precazzini, I.; Ragazzi, M.; Achim, M. I.; Schiavon, M.; Rada, E. C.
Nowadays the global tourism growth has caused a significant interest in research focused on the impact of the tourism on environment and community. The purpose of this study is to introduce a new ranking for the classification of tourist accommodation establishments with the functions of agro-tourism boarding house type by examining the sector of agro-tourism based on a research aimed to improve the economic, socio-cultural and environmental performance of agrotourism structures. This paper links the criteria for the classification of agro-tourism boarding houses (ABHs) to the impact of agro-tourism activities on the environment, enhancing an eco-friendly approach on agro-tourism activities by increasing the quality reputation of the agro-tourism products and services. Taking into account the impact on the environment, agrotourism can play an important role by protecting and conserving it.
Keller, M.; Banfi, S.; Haan, P. de
This final report for the Swiss Federal Office of Energy (SFOE) presents the results of a study made of the extent of so-called 'tank tourism' in Switzerland. The report attempts to how much motor fuel is purchased in border-near filling stations by persons from the other side of the border as a result of price differences in the different countries. The two methods used to estimate the extent of tank tourism, an ex-post analysis and the analysis of filling station turnover, are explained. Only road-traffic is considered; tank tourism in the aviation area is not looked at in this study. The extent of tank tourism is estimated for petrol and diesel fuels. The individual figures produced by the two methods are compared and the difference between them discussed. The report also investigates the effect of changing prices on tank tourism and discusses the problem of estimating the figures for 'off-road' consumers such as tractors and construction machines.
Full Text Available In this article I have tried to highlight the many criteria according to which tourism is classified and what are its main forms. Tourism is considered to be the most developed industry at the European level with a strong economic impact and the highest annual growth rate. Because of its scale and its various elements , but also because of the value and originality of these elements, tourism is the main motivation of all that is tourist traffic . A particular area or landmark is an interest to travel as far as that can provide tourist activity. The tourism potential of an area can be defined as all the elements that make up the sights with facilities to receive tourists representative. The main types of tourism that will be detailed in this article are: tourism, recreation and leisure, healthcare tourism, tourism or curative spa, cultural tourism, educational, social, or complex-type shopping tourism. The criteria according to which can be classified tourism are: distance, length of stay, geographic origin of tourists, type of transport used, how to organize your stay, the conduct of the stay, peculiarities destination, interaction travelers with the destination, the price paid, tourist`s age, the number of tourists. Depending on the area of origin, tourism and domestic tourism are classified in international tourism. Such, international tourism is classified in inbound tourism and outbound tourism. Any travel between these two forms is particular between which there is no definite boundary but some interdependence that helps promote tourism activities. Depending on the degree of mobility of tourists, tourism classified in tourism accommodation and tourism traffic. Tourism residence has three forms, namely long-stay tourism, tourism stay average stay lasting tourism and stay for a brief stay. Seasonality is another factor that affects tourist flows. This tourism classified into 3 types: winter tourism, summer and circumstance. Depending on the
Senija Causevic; Dr Paul Lynch
Dark tourism is defined as “visitation to places where tragedies or historically noteworthy death has occurred and that continue to impact our lives” Tarlow, 2005:48). Inherently, dark tourism conceptualises the consequence of a long-term conflict. This paper addresses the area of dark tourism in this context, an area which has received relatively little attention by scholars so far, focusing on its relevance to social reconciliation and urban regeneration in a re-emerging tourism economy ......
Full Text Available Since the 1980s, the World Tourism Organization (UNWTO has been developing and spreading a discourse that takes tourism to be a right. This paper critically analyses the basis of this idea in order to attempt to scrutinise the aim behind it. The study reaches the conclusion that considering tourism a right helps to legitimise the presence of the UNWTO within the United Nations structure and to defend the interests of tourism capital, to which the organisation has close links.
In the article there is made a systemic characterization and is clarified the nature of tourism policy. A more specific object of attention are some issues connected with the following: the interpretation of the interrelation „policy - tourism”; the clarific ation of the notion of „policy” in the context of tourism; theoretical overview and analysis of specialized literature; systemic characterization of policy in tourism and definition of the notion of „tourism policy”. There are defined and...
Ernst, William D.
A lubricated piston rod seal which inhibits gas leaking from a high pressure chamber on one side of the seal to a low pressure chamber on the other side of the seal. A liquid is supplied to the surface of the piston rod on the low pressure side of the seal. This liquid acts as lubricant for the seal and provides cooling for the rod. The seal, which can be a plastic, elastomer or other material with low elastic modulus, is designed to positively pump lubricant through the piston rod/seal interface in both directions when the piston rod is reciprocating. The capacity of the seal to pump lubricant from the low pressure side to the high pressure side is less than its capacity to pump lubricant from the high pressure side to the low pressure side which ensures that there is zero net flow of lubricant to the high pressure side of the seal. The film of lubricant between the seal and the rod minimizes any sliding contact and prevents the leakage of gas. Under static conditions gas leakage is prevented by direct contact between the seal and the rod.
Shirvani, Khosro A., E-mail: Khosro.email@example.com; Mosleh, Mohsen; Smith, Sonya T. [Howard University, Department of Mechanical Engineering (United States)
In this paper, the feasibility of using explosion synthesized diamond nanoparticles with an average particle size (APS) of 3–5 nm with a concentration of 1 % by weight for improving lubrication and friction in elastohydrodynamic lubrication (EHL) was investigated. Owing to the orders of magnitude increase in the viscosity of the lubricant in the EHL contact zone, diamond nanoparticles in the lubricant polish the surfaces at the nanoscale which decreases the composite roughness of contacting surfaces. The reduced composite roughness results in an increased film thickness ratio which yields lower friction. In the numerical analysis, governing equations of lubricant flow in the full elastohydrodynamic lubrication were solved, and the shear stress distribution over the fluid film was calculated. Using an abrasion model and the shear stress distribution profile, the material removal by the nanofluid containing nanoparticles and the resultant surface roughness were determined. The numerical analysis showed that in full EHL regime, the nanolubricant can reduce the composite roughness of moving surfaces. Experimental results from prior studies which exhibited surface polishing by such nanolubricants in boundary, mixed, and full elastohydrodynamic lubrication were used for comparison to the numerical model.
Shirvani, Khosro A.; Mosleh, Mohsen; Smith, Sonya T.
In this paper, the feasibility of using explosion synthesized diamond nanoparticles with an average particle size (APS) of 3-5 nm with a concentration of 1 % by weight for improving lubrication and friction in elastohydrodynamic lubrication (EHL) was investigated. Owing to the orders of magnitude increase in the viscosity of the lubricant in the EHL contact zone, diamond nanoparticles in the lubricant polish the surfaces at the nanoscale which decreases the composite roughness of contacting surfaces. The reduced composite roughness results in an increased film thickness ratio which yields lower friction. In the numerical analysis, governing equations of lubricant flow in the full elastohydrodynamic lubrication were solved, and the shear stress distribution over the fluid film was calculated. Using an abrasion model and the shear stress distribution profile, the material removal by the nanofluid containing nanoparticles and the resultant surface roughness were determined. The numerical analysis showed that in full EHL regime, the nanolubricant can reduce the composite roughness of moving surfaces. Experimental results from prior studies which exhibited surface polishing by such nanolubricants in boundary, mixed, and full elastohydrodynamic lubrication were used for comparison to the numerical model.
Kokkranikal, Jithendran; Chettiparamb, Angelique
Responsible tourism is a concept that overlaps significantly with concepts of sustainable tourism, ethical tourism, pro-poor tourism and integrated tourism (Chettiparamb and Kokkranikal, 2012). Responsible tourism emphasises the role of businesses in achieving sustainability and can be seen as yet another concept within the sustainable tourism genre, which comprises many forms of tourism such as ecotourism, ethical tourism, alternative tourism, green tourism, soft tourism, etc. Responsible to...
, NOx, THC, PM, lubricant-SOF and PAH from one diesel and one gasoline type vehicle using biodegradable lubricants and conventional lubricants. This paper describes the results of the experiments with the diesel type vehicle only. Lubricant consumption and fuel consumption are other important parameters...
Bech, Jakob Ilsted; Bay, Niels; Eriksen, Morten
Applying a transparent tool technique the lubrication in plane strip drawing of aluminium sheet is studied providing the strip with surface pockets for entrapment of lubricant. The compression and eventual escape of trapped lubricant by Micro Plasto HydroDynamic Lubrication (MPHDL) as well as Micro...
Full Text Available The use of vegetable biodegradable basestocks for lubricant oils present several advantages over the much more extended mineral bases. These advantages refer to biodegradability, a renewable feedstock of local production, lubricant and viscosity index and lower costs than synthetic lubricant bases. Despite these benefits, their use in industry and motor vehicles is not yet extensive due their lower stability and higher pour points. Vegetable oils are esters of fatty acids and glycerol, and their physicochemical properties rely mainly on the composition of their acyl moieties. Thus, to assure the maximum levels of stability while maintaining acceptable behavior at low temperatures, monounsaturated fatty acids are preferred for this purpose. The presence of natural antioxidants also improves the properties of these vegetable based stocks as lubricants. These oils usually require additives to improve their viscosity value, oxidative stability and properties at low temperatures. In the present work, the different sources of vegetable oils appropriate for biolubricant production were reviewed. Their properties and the future improvement of the oil bases, oil based stock production, uses and additives are discussed.
El uso de bases vegetales biodegradables para aceites lubricantes presenta varias ventajas sobre las mucho más extendidas bases minerales. Estas ventajas se centran sobre todo en su biodegradabilidad, en ser un recurso renovable de producción local, en su lubricidad y en su índice de viscosidad, presentando además costes más bajos que las bases sintéticas. Sin embargo, estas ventajas no han extendido el uso de bases vegetales ni en industria ni en automoción debido a su menor estabilidad y sus mayores puntos críticos de fluidez. Los aceites vegetales son ésteres de ácidos grasos y glicerol y sus propiedades físico-químicas dependen principalmente de su composición acílica. Así, para asegurar los máximos niveles de
Wild, E.; Mack, K.J.
Safe operation of liquid metal cooled nuclear reactors requires a knowledge of the tribological behaviour of contacting components at high temperatures with slow relative movement at high frictional loads in a chemically aggressive environment. Experiments have been performed on various material combinations in liquid sodium and argon. Because of the small sliding movements, hydrodynamic lubrication is not expected and thus surface finish is an important factor. Tests have been performed on brushed, ground and lapped surfaces. Among the material combinations tested a CrC-coating on a 1.4961 stainless steel substrate performed well. Friction coefficients of 0.35-0.5 in argon and 0.1-1.2 in liquid sodium were recorded. (author)
Cesario, Sandra K
Medical tourism is an emerging industry that facilitates travel to another country for people who seek medical, surgical, or dental care that is unavailable or more affordable than in their home countries. Rapid advances in electronic communication and the ease of international travel have fueled the growth of this industry. More than half of medical travelers are women, especially for services related to cosmetic or reproductive conditions. Medical tourism creates both opportunities and challenges for nurses and other health care providers. Consumers' increased access to the global health care market necessitates the development of a structure that shapes the medical tourism industry and addresses evolving ethical, political, and human rights concerns related to this industry. Copyright © 2018 AWHONN. Published by Elsevier Inc. All rights reserved.
Gabriela Cecilia STĂNCIULESCU
Full Text Available Undoubtedly, the relevance of transport activities in relation to tourism activities is essential, because it is extremely important and necessary to offer feasible information about tourism services to help consumer to choose the mode of travel to destinations ideal holiday. The methods used in the development of this hypothesis were explanation, exemplification (brief presentation of each mode of transport comparison etc. Analyzing the current situation of national, European and World Wide tourism transportation, the paper proposes practical applications able to explain that the conduct of economic activities as an integral part of the sector of trade and services within a national economy, would not be possible without the involvement of transport, whether by road, rail and air and naval. The results of the analysis are perfectly applicable offering guests the opportunity to reach the most remote corners of the world in a short time, high degree of comfort and affordable price.
Gina Ionela Butnaru
Full Text Available Tourism and sustainable development are the subject of many initiatives and public or private debates in Romania. The main problem to which these initiatives try to find an answer is mostly related to the income generation for the local communities by using rationally and efficiently the local potential, in agreement with the economic, social, natural, and cultural factors. Consequently, some measures should be taken, and the tourist sector as a whole needs all the methods of sustainable development: new technologies, change of social behaviour, change of environmental legislation, methods of environmental management, better planning and development of control procedures. In this article, we presented a model of tourism development which should be applied in all the regions of great tourist attraction, and we realised a synthesis of the socio-economic advantages of sustainable tourism.
Full Text Available The Caribbean is challenged to remain competitive in a dynamic global tourism arena. Tourism education plays a critical role in preparing individuals to effectively manage this industry in order to gain that competitive edge. The focus of this study is the determination of the essential management competencies of tourism graduates. The findings reveal that the focus of the tourism programme should be on producing graduates that are flexible, ethical and knowledgeable. The onus is on tourism educators to establish close collaboration among key stakeholders to ensure that there is understanding as to what is of critical importance in preparing future Caribbean leaders.
Zhenyu J. Zhang
Full Text Available Lubricant additives, based on inorganic nanoparticles coated with organic outer layer, can reduce wear and increase load-carrying capacity of base oil remarkably, indicating the great potential of hybrid nanoparticles as anti-wear and extreme-pressure additives with excellent levels of performance. The organic part in the hybrid materials improves their flexibility and stability, while the inorganic part is responsible for hardness. The relationship between the design parameters of the organic coatings, such as molecular architecture and the lubrication performance, however, remains to be fully elucidated. A survey of current understanding of hybrid nanoparticles as lubricant additives is presented in this review.
Lubricant analysis has always played an important yet somewhat invisible role in equipment health monitoring. At its most primitive, simple observations and field testing alert equipment operators to changing conditions. At its most advanced, data from performance and analytical tests are used to develop or select optimum lubricants for service, stretch drain intervals, predict remaining equipment life and identify potential equipment or system problems at an incipient stage. Coupled with thermography and vibration analysis, lubricant analysis can become a major component of a comprehensive predictive maintenance (PM) program. Ontario Hydro finds itself at a turning point regarding the use and monitoring of lubricants. Increasing emphasis on equipment reliability and plant life extension, coupled with major, recent changes in lubricant composition in response to environmental, energy and safety concerns, forces an upgrading of many aspects of lubricant monitoring so that it may establish itself as a key part of modern PM practices. This paper discusses some of these aspects. (author)
Darfizzi Derawi; Jumat Salimon
Palm olein (PO o ) is widely used as edible oil in tropical countries. The lubrication properties and chemical compositions of PO o being considered to be used as renewable raw material for bio lubricant synthesis. PO o is suitable to be used directly as bio lubricant for medium temperature industrial applications. Palm olein has good viscosity index, oxidative stability, flash and fire point as a lubricant source. PO o contains unsaturated triacylglycerols (TAG): Palmitin-Olein-Olein, POO (33.3 %), Palmitin-Olein-Palmitin, POP (29.6 %), which are very important to produce good lubricant properties. This unsaturated bond is preferable in chemical modification to produce bio lubricant. The chemical compositions of PO o were tested by using high performance liquid chromatography (HPLC) and gas chromatography (GC) techniques. (author)
The Japanese tourist industry now faces a turbulent age deriving from a dramatic change of market trend and customer needs. In particular, the recent global economic crisis and diversification of emergency risks have a great influence not only on travel business circles but on the tourist industry as a whole. On the other hand, the tourist industry is regarded as one of the most promising industries in the national strategy, while the realization of the concept of a tourism-oriented nation i...
Full Text Available The tourism industry is unlike any other because, instead of a product, you are selling a place and all the things it has to offer. You are competing with the entire world every time you promote tourism in a given destination, and this high level of competition demands a creative and unique approach. To be successful, your marketing should constantly put forth the best possible image of your destination, while creating interest on a broad scale in as many ways as possible. Romania has to conceive an efficient promotional mix in order to attract more tourists.
Hjalager, Anne Mette
This article recognises the immense and growing interest for the development of a sustainable tourism. However, it demonstrates a gap between general awareness and preferences on the one hand, and the practices and behaviour of tourists and tourist industries on the other hand. The constraints...... for the development of a consumerism in the fields of tourism are addressed in the article. A particular emphasis is put on a lack of appropriate institutional frameworks that provide individual tourists with reliable information and co-ordinate their purchasing power in order to enhance the issues of environmental...... sustainability....
Stephen W. Litvin
Full Text Available Government policy has a significant impact on the hospitality and tourism industry, but it is unclear if political leaders fully understand this economic sector when crafting policies. This article offers new research about the direct involvement of industry practitioners in the political process, by analyzing the backgrounds of legislators in the six New England states. The data indicate that only 3% of these legislators have current or former careers related to hospitality and tourism. The author suggests that practitioners should seek election to political office, to better influence government policy.
Full Text Available The last decades of the XX century, which the United Nations declared the decade of cultural tourism in the world, have contributed to encouraging people to think about the question of how tourism can contribute to the development of heritage and culture, or how tourism the same may compromise. However, the cultural offer today, is an essential and important part of a modern tourist offer, without which it can no longer be imagined, as cultural tourism is becoming an increasingly important segment of the global tourism market. It had a great share in the expansion of a tourist demand and tourist offer and their profiling, leading to a whole series of specific forms of tourism in its embrace, and today more attention is paid to the industrial heritage, cultural routes, cultural landscapes and similar, as current forms of cultural tourism in the modern tourism market. In fact, theorists of tourism are now faced with a number of new types of tourist movements which have resulted in the creation of various forms of cultural tourism that were not even discussed in the last century, and the fact is that a change in tourist demand brings new habits and new needs that can be implemented only through special forms of tourism.
Seaside tourism has become one of the popular tourism destinations to the tourists. It is necessary for manager to study the strategy marketing of seaside tourism destination to promote the seaside tourism. This paper examines the characteristics of seaside tourism and uses the SWOT to analyze the strengths, weakness, opportunities and treats of seaside tourism. Then, the challenges of seaside tourism destination are introduced and should be noticed by the marketing managers.
Ile Florența Larisa; Țigu Gabriela
Medical tourism is a modern concept, but not a new tourism practice. Even there is still no international consent on the definitions and measurement of this trend, its importance in the development of a tourism destination started to be taken into consideration. In accordance with tourism segment classification depending on journey reasons recommended by World Tourism Organization, one of the main groups is for “medical treatment/health”. Being part of health tourism, medical tourism is often...
Bauer, Irmgard L
Love, sex and the female traveller: romance tourism or female sex tourism? The phenomenon of women travelling in search of relationships with local men in developing countries has been studied for the last 20 years. However, it appears little known in travel medicine. Relevant literature was found through PubMed, Science Direct, ProQuest and Google Scholar. The reference lists of selected articles identified further sources. Historical records of women travellers to far-away countries abound. Then, as now, women not only searched for the erotic 'other' but made romance and sex the purpose of their trip. Today, increasing numbers of women travel to destinations in developing countries where sex with local men is the main attraction. This pastime raises concerns not only for the women themselves but for the local men involved as well as their sex partners and the local communities. Although more research is necessary, comparing the criteria that describe men travelling for sex and relationships and women travelling for sex and relationships appears to suggest that there is very little difference between the two, regardless of what the pursuit is called. Women looking for sex with local men are sex tourists, too. Recognition of this fact needs to influence the pre and post travel care of female travellers. Copyright © 2013 Elsevier Ltd. All rights reserved.
..., DEPARTMENT OF TRANSPORTATION FEDERAL MOTOR CARRIER SAFETY REGULATIONS INSPECTION, REPAIR, AND MAINTENANCE § 396.5 Lubrication. Every motor carrier shall ensure that each motor vehicle subject to its control is...
Li, Jinjin; Liu, Yuhong; Luo, Jianbin; Liu, Pengxiao; Zhang, Chenhui
The present work reports an excellent lubrication property of an aquatic plant called Brasenia schreberi (BS). To investigate the lubrication characteristics of the BS mucilage, a novel measuring system is designed, and an ultralow friction coefficient about 0.005 between the mucilage and glass surface has been obtained. It is found that the ultralow friction is closely related to the structure of mucilage and water molecules in the mucilage. The microstructure analysis indicates that the mucilage surrounding BS forms a kind of polysaccharide gel with many nanosheets. A possible lubrication mechanism is proposed that the formation of hydration layers among these polymer nanosheets with plenty of bonded water molecules causes the ultralow friction. The excellent lubrication property has a potential application for reducing the friction between a glossy pill coated with such layer of mucilage and people's throats.
This is the final report for the three year research program on "Fundamentals of Friction and Vapor Phase Lubrication" conducted at Carnegie Mellon with support from AFOSR grant number F49630-01-1-0069...
Kim, Daniel; Archer, Lynden A.
Silica (SiO2) nanoparticles densely grafted with amphiphilic organic chains are used to create a family of organic-inorganic hybrid lubricants. Short sulfonate-functionalized alkylaryl chains covalently tethered to the particles form a dense corona
Federal Laboratory Consortium — The Fuels and Lubricants Technology Team operates and maintains the Fuels and POL Labs at TARDEC. Lab experts adhere to standardized American Society for Testing and...
The environmental impact of lubricants use concern the direct effects from spills but also the indirect effects such as their lifetime and the emissions from thermal engines. The biodegradable performances and the toxicity are the environmental criteria that must be taken into account in the development and application of lubricants together with their technical performances. This paper recalls first the definition of biodegradable properties of hydrocarbons and the standardized tests, in particular the CEC and AFNOR tests. Then, the biodegradable performances of basic oils (mineral, vegetal, synthetic esters, synthetic hydrocarbons etc..), finite lubricants (hydraulic fluids..) and engine oils is analyzed according to these tests. Finally, the definition of future standards would take into account all the environmental characteristics of the lubricant: biodegradable performances, energy balance (CO 2 , NOx and Hx emissions and fuel savings), eco-toxicity and technical performances (wearing and cleanliness). (J.S.)
Hamrock, B. J.; Dowson, D.
Formula predicts minimum film thickness required for fully-flooded ball bearings, gears, and cams. Formula is result of study to determine complete theoretical solution of isothermal elasto-hydrodynamic lubrication of fully-flooded elliptical contacts.
Townsend, D. P.
The problems and failures occurring with the operation of high speed gears are discussed. The gearing losses associated with high speed gearing such as tooth mesh friction, bearing friction, churning, and windage are discussed with various ways shown to help reduce these losses and thereby improve efficiency. Several different methods of oil jet lubrication for high speed gearing are given such as into mesh, out of mesh, and radial jet lubrication. The experiments and analytical results for the various methods of oil jet lubrication are shown with the strengths and weaknesses of each method discussed. The analytical and experimental results of gear lubrication and cooling at various test conditions are presented. These results show the very definite need of improved methods of gear cooling at high speed and high load conditions.
Full Text Available The subject of analysis in the paper is economic impact of cultural tourism and identification of the main factors which directly affect cultural tourism revenues. Most countries do not have a statistical system of monitoring and analysing individual factors of cultural tourism such as the number of arrivals of cultural tourists and consumption of cultural tourists. Therefore, it is hard to assess the economic impact of cultural tourism. In cultural tourism, cultural assets are prepared and placed on the tourist market, i.e. cultural resources are transformed into cultural tourism products. The main objective is fulfilling tourists' needs, and achieving positive effects which includes economic effects. Identification of the economic impact of cultural tourism is important because cultural resources have an inestimable value for the local community. Tourism valorisation should be used in order to achieve the necessary maximum effects with minimum negative impacts which tourism may leave on cultural resources. The objective of the paper is to identify the economic contribution of cultural tourism in the Republic of Croatia and to propose a model of identification of economic impact of cultural tourism.
Pasgaard, Jens Christian
This article is rooted in theories presented in the PhD dissertation Tourism and Strategic Planning (Pasgaard 2012) and features a number of much discussed concepts related to the complicated phenomenon of tourism and to the discipline of strategic urban planning. It is beyond the scope...... of this article to enter a detailed discussion of all mentioned concepts; however, it is important to set the stage by providing a few compressed notes on the overall approach to the phenomenon of tourism. Corresponding to the fluid transition between chores of everyday life and tourism behavior, the tourist...... space is not an unequivocal spatial specification. Rather, tourist space is a temporary condition, which depends on tourism activity and the mode of the observer. It is essential to understand and accept the liquidity of the tourism phenomenon and remember that tourism behavior and tourist space...
'Global transplant commercialism' (practices and policies involving international trade in organs from living vendors, e.g., 'transplant tourism') is currently subjected to unprecedented criticism. In parallel, the debate around 'local transplant commercialism' (practices and policies that confine trade in organs from living vendors to national markets or economic unions) is heating up. In an attempt to assess the potential outcomes of these trends, this article reviews and discusses some sociological and ethical issues, ending with a proposal for a reinvigorated anticommercialist strategy. The current international campaign against global transplant commercialism is conducted by an ad hoc alliance between strange bedfellows, proponents of local transplant commercialism on the one hand and opponents of any transplant commercialism on the other. Disparities in the rigor of the respective ethical discourses, the expanding list of precedents of legitimized commerce in the human body, and the political economy of transplantation, all suggest that the former have the upper hand. Recent achievements in the struggle against international organ trafficking may not herald the abolition of transplant commercialism but rather presage its reconfiguration in deglobalized forms. In light of such a prospect, those who wish to prevent the pervasive commodification of the human body from entering the gates of transplant medicine should consider devising a new, perhaps more radical, strategy.
Wall, W. A.
A two-dimensional concept for Spacelab rack 7 was developed to study the interaction of liquid lubricants and surfaces under static and dynamic conditions in a low-gravity environment fluid wetting and spreading experiments of a journal bearing experiments, and means to accurately measure and record the low-gravity environment during experimentation are planned. The wetting and spreading process of selected commercial lubricants on representative surface are to the observes in a near-zero gravity environment.
Heidebroek, E; Pietsch, E
Numerous observations of such lubrication processes within range of boundary friction on journal bearings and gear tooth profiles have strengthened the supposition that it should be possible to study the attendant phenomena with engineering methods and equipment. These considerations formed the basis of the present studies, which have led to the discovery of relations governing the suitability of bearing surfaces and the concept of "lubricating quality."
Rho, Byoung Hoo; Kim, Kyung Woong
Noise estimating procedures of oil lubricated journal bearings are presented. Nonlinear analysis of rotor-bearing system including unbalance mass of the rotor is performed in order to obtain acoustical properties of the bearing. Acoustical properties of the bearing are investigated through frequency analysis of the pressure fluctuation of the fluid film calculated from the nonlinear analysis. Noise estimating procedures presented in this paper could aid in the evaluation and understanding of acoustical properties of oil lubricated journal bearings
This report described the work conducted at the National Institute of Standards and Technology under an interagency agreement signed in September 1992 between DOE and NIST for 5 years. The interagency agreement envisions continual funding from DOE to support the development of fuel efficient, low emission engine technologies in terms of lubrication, friction, and wear control encountered in the development of advanced transportation technologies. However, in 1994, the DOE office of transportation technologies was reorganized and the tribology program was dissolved. The work at NIST therefore continued at a low level without further funding from DOE. The work continued to support transportation technologies in the development of fuel efficient, low emission engine development. Under this program, significant progress has been made in advancing the state of the art of lubrication technology for advanced engine research and development. Some of the highlights are: (1) developed an advanced high temperature liquid lubricant capable of sustaining high temperatures in a prototype heat engine; (2) developed a novel liquid lubricant which potentially could lower the emission of heavy duty diesel engines; (3) developed lubricant chemistries for ceramics used in the heat engines; (4) developed application maps for ceramic lubricant chemistry combinations for design purpose; and (5) developed novel test methods to screen lubricant chemistries for automotive air-conditioning compressors lubricated by R-134a (Freon substitute). Most of these findings have been reported to the DOE program office through Argonne National Laboratory who manages the overall program. A list of those reports and a copy of the report submitted to the Argonne National Laboratory is attached in Appendix A. Additional reports have also been submitted separately to DOE program managers. These are attached in Appendix B.
In 1994, NASA and Lockheed Martin Space Operations commissioned Sun Coast Chemicals of Daytona Inc to develop a new type of lubricant that would be safe for the environment and help "grease the wheels" of the shuttle-bearing launcher platform. Founded in 1989, Sun Coast Chemicals is known amongst the racing circuit for effective lubricants that help overcome engine and transmission problems related to heat and wear damage. In a matter of weeks, Sun Coast Chemical produced the biodegradable, high-performance X-1R Crawler Track Lube. In 1996, Sun Coast Chemical determined there was a market for this new development, and introduced three derivative products, Train Track Lubricant, Penetrating Spray Lubricant, and Biodegradable Hydraulic Fluid, and then quickly followed with a gun lubricant/cleaner and a fishing rod and reel lubricant. Just recently, Sun Coast introduced the X-1R Corporation, which folds the high-performance, environmentally safe benefits into a full line of standard automotive and specially formulated racing products. The entire X-1R automotive product line has stood up to rigorous testing by groups such as the American Society of Mechanical Engineers, the Swedish National Testing and Research Institute, the Department of Mechanical Engineering at Oakland University (Rochester, Michigan), and Morgan-McClure Motorsports (Abingdon, Virginia). The X-1R Corporation also markets "handy packs" for simple jobs around the house, consisting of a multi-purpose, multi-use lubricant and grease. In 2003, The X-1R Corporation teamed up with Philadelphia-based Penn Tackle Manufacturing Co., a leading manufacturer of fishing tackle since 1932, to jointly develop and market a line of advanced lubrication products for saltwater and freshwater anglers
Munar, Ana Maria
those cultures take for granted. To do this I will introduce the identity of a contemporary super-hero 'The Hyper Tourism Researcher'. This ideal archetype will be presented to help us reflect on the questions of speed and busyness (why do we all run so much?), meaning and purpose (towards what end...
Tourism can have a broad range of impacts, including impact on the economy, on the natural and built environment, on the local population, and on visitors themselves. This PhD thesis discussed the measurement of regional economic impacts
Matzarakis, A.; Freitas, C.R. de; Scott, D. (eds.)
This publication grew out of the Second International Workshop of the International Society of Biometeorology, Commission on Climate Tourism and Recreation (ISB-CCTR) that took place at the Orthodox Academy of Crete in Kolimbari, Greece, 8-11 June 2004. The aim of the meeting was to (a) bring together a selection of researchers and tourism experts to review the current state of knowledge of tourism and recreation climatology and (b) explore possibilities for future research and the role of the ISB-CCTR in this. A total of 40 delegates attended the June 2004 ISB-CCTR Workshop. Their fields of expertise included biometeorology, bioclimatology, thermal comfort and heat balance modelling, tourism marketing and planning, urban and landscape planning, architecture, climate change, emission reduction and climate change impact assessment. Participants came from universities and research institutions in Australia, Austria, Canada, Croatia, France, Germany, Greece, Hungary, Italy, the Netherlands, New Zealand, Portugal, Slovenia, United Kingdom and United States of America. Business conducted at the Workshop was divided between five sessions: assessment of climatic resources; climate change; health; weather, sports and risk forecasts; and behaviour and perception. However, the content of this publication is organised so that it reflects the new perspectives and methods that have evolved since the ISB-CCTR was established. (orig.)
R. Govers (Robert); F.M. Go (Frank); K. Kumar (Kuldeep)
textabstractThis article examines the role of tourism promotion as a component of destination image formation. It reports the findings of a study in which 1,100 respondents from around the globe described their previsit perceived image of seven sample destinations, as well as the information sources
Berto Mulia Wibawa
Full Text Available Determinants of Customer Satisfaction at Pertamina's Lubricants ProductLubricant industry is one of the strategic industries in around the world. The potential of the lubricant industry in Indonesia grows rapidly along with the increasing demand and the number of a vehicle from year to year. This study aims to analyze factors that influencing customer satisfaction Pertamina Lubricants product and measure how far the customer satisfaction level of its product. This study observed eight categories of Pertamina Lubricants product, with quota sampling technique where each category of the product taken 30 samples, so the total number of the sample are 240 respondents. Multiple linear regression and customer satisfaction index were used in this study. The study finds brand popularity has the most significant effect on customer satisfaction, followed by price and durability. Customer satisfaction level stands at 78 percent, which means belongs in the satisfied category. Managerial implications of this study provide strategies for Pertamina Lubricants to improve their business performance and to increase the level of customer satisfactionDOI: 10.15408/ess.v7i1.4309
Ossareh, Shahrzad; Broumand, Behrooz
Transplant tourism is one of the main unacceptable aspects of medical tourism, implicating travel to another country to receive an allograft. Organ shortages in wealthier countries have persuaded patients to preclude organ waiting lists and travel to other countries for getting organs especially kidneys. On the other hand, in many countries, there is no transplant program, and hemodialysis is expensive. Hence, patients with end-stage kidney disease may have to travel to get a kidney allograft for the sake of their lives. In Iran, a legal compensated and regulated living unrelated donor kidney transplant program has been adopted since 1988, in which recipients are matched with liveunrelated donors through the Iran Kidney Foundation and the recipients are compensated dually by the government and the recipient. In this model regulations were adopted to prevent transplant tourism: foreigners were not allowed to receive a kidney from Iranian donors or donate a kidney to Iranian patients; however, they could be transplanted from donors of their own nationality, after full medical workup, with the authorization of the Ministry of Health. This was first considered as a humanitarian assistance to patients of the countries with no transplant program and limited and low quality dialysis. However, the policy of "foreign nationality transplant" gradually established a spot where residents of many countries, where living-unrelated donor transplant was illegal, could bring their donors and be transplanted mainly in private hospitals, with high incentives for the transplant teams. By June 2014, six hundred eight foreign nationality kidney transplants were authorized by Ministry of Health for citizens for 17 countries. In this review, we examine the negative aspects of transplant for foreign citizens in Iran and the reasons that changed "travel for transplant" to "transplant tourism " in our country and finally led us to stop the program after more than 10 years.
Full Text Available Cultural attractions are often linked to unique features of the host population, and are often related to a national minority or a segment of the population that preserved their traditions. Ethnically or religiously varied countries may often have such unique attractions, that seem exotic and appealing to tourists. Multiculturality is often an attraction for tourism, offering generally an authentic experience for visitors of different backgrounds. Besides, an ethnically or linguistically varied population can also provide a linguisticaly more skilful labour force, that is more sensitive to the needs of visitors coming from different cultures, and thus create a more comfortable environment for them. The issue of multicultural societies has recently become a sensitive issue, due to global mass migration. There is a belief that ethnic or cultural fractionalisation would necessarily bring about difficulties of understanding and cooperation, leading to lower economic performance, less stable economic and social processes and, ultimately a slowdown of economic output. The resulting conflicts, difficulties may frighten away tourists and lead to the vulnerability of the tourism sector in very heterogeneous countries. On the other hand, ethnic fractionalisation and the resulting cultural diversity can be welcome as valuable resources as the varied pool of knowledge, traditions, skills, customs, that can enhance innovative ideas and creativity. In the present paper evidence is looked for the relationship between ethnic, linguistic and religious diversity and tourism performance in a cross-country statistical analysis of 155 countries of the world. Statistical analysis of 155 countries show, that although there is a tendency of lower tourism performance with greated fractionalisation of the society, the most popular and successful tourism destinations are often multicultural and multiethnic societies.
Martin, Dominique E.
The dark history of transplant tourism in Pakistan demonstrates the hazards of unregulated cross-border markets in human organs. Trading on existing national and international social inequities, ‘transplant tourism’ offers dubious benefits for transplant recipients and attractive profits to those facilitating the industry at the expense of the world’s poor. The impact of Pakistan’s 2007 Transplantation of Human Organs and Tissue Ordinance and the sustained efforts of transplant professionals ...
Full Text Available When looking at the increase of tourism in a destination, it can be said that tourism is a valuable part of the economy. The proposal offered by today’s competitive paradigm: that higher the number of tourists visiting a city, the higher the income, sounds good at first. The increased number of tourist arrivals gives the appearance of increasing desirability of the city. Parallel with the increased tourism activities, new buildings, new lifestyles, foreign capital and new socio-economic relationships appear rapidly and replace the traditional ones. However, there will be a huge amount of social, cultural, economic and environmental problems faced by the local people as well as the tourists the city. Tourism paradox is the name given to the phenomenon where tourism industry destroys natural and cultural environment in a destination that is necessary for tourism activities. On the other hand the balance, which does not change and disturbs the social and economic relations at the destination is called “tourism equinox”. Therefore, spatial reorganization and urban regeneration play a crucial role for the marketing of cities and this transformation action affects all infrastructure facilities, restorations of old buildings, reorganization of historical zones, and revitalizing the architectural style of the cities. New projects and approaches to solve the problems caused by the growth of urban populations and to establish healthy sustainable tourism destinations are becoming more important than ever. Tourism detox is a treatment that is intended to remove harmful substances from these destinations. This paper investigates the influence of tourism paradox and tourism equinox on urban environments in relation to tourism activities and the protection of natural and cultural resources with the help of tourism detox. It primarily relies on qualitative research to understand the main futures of tourism paradox, equinox and detox taking the physical
Converging prices of vegetable oils and petroleum, along with increased focus on renewable resources, gave more momentum to vegetable oil lubricants. Boundary lubrication properties of four Extreme Pressure (EP) additive blends in conventional Soy Bean Oil (SBO) and Paraffinic Mineral Oil (PMO) of ...
This thesis focuses on the effect of additives on boundary lubrication of bearing steel for water-based lubrication systems. The oil-in-water (O/W) emulsion and the water-glycol based liquid were selected as the base fluids for research. Sulfur compounds, nitrogen heterocycles and graphene
Cavestri, R.C. [Imagination Resources, Inc., Dublin, OH (United States)
Part one of this research provides manufacturers of components of air-conditioning and refrigeration equipment with a useful list of lubricant additives, sources, functional properties and chemical species. The list in part one is comprised of domestic lubricant additive suppliers and the results of a literature search that was specifically targeted for additives reported to be useful in polyolester chemistry.
Macià Serra i Serra
Full Text Available This article argues that while cycle tourism remains only a small sector within sustainable tourism, it has great growth potential and attractive characteristics for the communities that engage in it. Based on this thesis, first, a description is given of cycle tourism, its characteristics, evolution and impacts. Second, its implementation through public policies over the past two decades is analysed. Third, the way cycle tourism has developed in various countries is examined, along with what “rail trails” are, comparing two successful case studies (Girona’s Vies Verdes and La Loire à Vélo. Finally, the conclusions highlight the importance of this sustainable means of tourism, the implementation of which requires cooperation and networking between various public and private actors, and raises the question of whether this type of tourism is replicable in medium-developed countries.
Full Text Available Academics perceive a great potential of virtual worlds in various areas, including tourism and education. Efforts adapting the virtual worlds in practice are, however, still marginal. There is no clear definition of the virtual world. Therefore the author of this article attempts to provide one. The paper also focuses on the barriers of a wider exploitation of the virtual worlds and discusses the principles that might help to increase their potential in tourism area. One of the principles – gamification – favours a wider adaptation of the virtual worlds in tourism. Applying gamification principles provides visitors with some unique experiences while serving as a powerful marketing tool for institutions. The benefits of implementing tourism education activities based on cooperative principles set in an immersive environment of the virtual worlds are depicted afterwards. Finally, this paper includes successful case studies, which show advantages and drawbacks of some approaches in exploiting the virtual worlds in tourism and tourism education.
Tourism is a growing rapidly sector and the impacts on the environment are more and more significant. In this framework a study has been realized on the following three topics: the spatial and temporal concentrations bounded to the tourism and the environmental impacts; the greenhouse gases, the wastes and the noise generated by the increase of the transportation sector bounded to the tourism; a sectoral analysis of the environmental impacts function of the area (sea, mountain, country). (A.L.B.)
Candela Guido; Castellani Massimiliano; Mussoni Maurizio
In this paper we investigate the effects of a Keynesian policy in tourists destinations where tourism products are mainly sold through «direct sales» (decentralized solution) and the tourism market equilibrium is characterized by sticky prices and unemployment (coordination failure). A Keynesian demand policy is a Pareto improving solution with respect to the organization of sales by Tour operators or Destination managers (centralized solution), since tourism firms are not worse-off in terms ...
Full Text Available The application of ionic liquids as lubricants has attracted substantial interest over the past decade and this has produced a rich literature. The aim of this review is to summarize the main findings about frictional behavior of ionic liquids in the boundary lubrication regime. We first recall why the unusual properties of ionic liquids make them very promising lubricants, and the molecular mechanisms at the origin of their lubricating behavior. We then point out the main challenges to be overcome in order to optimise ionic liquid lubricant performance for common applications. We finally discuss their use in the context of electroactive lubrication.
These days, in the developed world, sport tourism fast becoming a lleisure experience. As much as it is popular, it has also become a very important economic activity as well as a marketing tool to boost a destination’s tourism potentials. Current research has proven that sport and tourism contributes about 1 to 2% of the gross domestic products of industrialized economies. Thus from the above statistics, it is no doubt that sport and tourism has great impact on a destination, it can altogeth...
Rabontu Cecilia Irina
Full Text Available It is discussing,increasingly more often, in contemporary tourism, about new elements that enhances the appearance and development of new forms of tourism, including dark tourism which is based on the increasingly desire of modern tourist to achieve spiritual journeys, which have as attractions- deaths, disasters, atrocities, torture methods and other such issues. This subject has awoke our interest because we can find in Romania demand for this form of tourism but also various possibilities to use it in Romanian tourist circuits and also in the development of authentic tourism products with this subject. For Romania, this new form of tourism showed interest to academic research and to media, but in tourism literature we find a vacuum of information, being quite difficult to identify and label as dark tourism product a particular tourist site, a certain attraction or exhibition associated with death and dark, sinister and frightening elements, but we will try to discover certain components of this kind in Romanian tourism products.
themes and fields which are usually addressed separately within tourism research: consumption and production; travel and the everyday; governance and policy; technology and the social. The book critically engages with practices as a fruitful approach to tourism research as well as how the particularities......Tourism research that is inspired by theories of practice is currently gaining in prominence. This book provides a much-needed introduction to the potential applications of theories of practice in tourism studies. It brings together a variety of approaches exploring how theories of practice bridge...... of tourism might inform our understanding of practice theories. This book contributes to conceptual and methodological debates providing insights from authors who have engaged with practice theory as an entry point to researching tourism. It offers a solid starting point for researchers and students alike...
Liburd, Janne J.; Nielsen, Tanja K.; Heape, Chris
Emerging theories of smart tourism are chiefly concerned with how Internet Communication Technology and Big Data can influence marketing, product and destination development. The risk being that an overt focus on formal outcomes, namely technology, products and services, diverts attention from how...... things and operations are actually achieved. This paper challenges the notions of smart and value co-creation by introducing tourism co-design as a learning and experiment driven development process. Tourism co-design leverages the communicative interaction between people and enables tourism operators...... to change their practices. Based on fieldwork in the northern part of Denmark we explore how smart tourism can become smarter through tourism co-design processes. We argue that a shift is needed from: How can we efficiently achieve a more or less known goal? To: How can we effectively explore and give sense...
Ren, Carina Bregnholm; Petersen, Morten Krogh; Nielsen, Tanja Knoblauch
by technology and data, but must be understood as a socio-technical and collaborative accomplishment. This entails seeing seemingly mundane issues as central to developing Smart Tourism and to link the development of Smart Tourism to transformations in the practices of everyday organizational life.......In this chapter, we explore how a Smart Destination is imagined and grappled with at an organizational level in its first and tentative stages of development. Drawing on practice theory and research in the North Denmark Region, we show how the idea of Smart Tourism is embraced by almost all...... of the stakeholders in the area, while the full potentials of this new phenomenon are experienced as difficult to realize. Abstaining from seeing Smart Tourism as a unilinear technological or digital evolution, we present four situated configurations of Smart Tourism. We argue that Smart Tourism is not made up solely...
Cristina Elena ALBU
Full Text Available Communication is involved in all social life acts, being the constituent factor of creation and of cultural processes. Cultural diversity and intercultural dialogue are intensely discussed topics in today's society which is marked by globalization. Cultural differences are the core subject for studies addressing intercultural communication. Good knowledge of other cultures is a necessary step to get to recognize the nature of these differences and to relate to others through attitudes of understanding and tolerance which are premises for genuine intercultural dialogue, especially in the tourism industry. While communication is an act of human relationships, culture is the motive of this act. In tourism, quality of communication is related to the level of the culture involved and to the degree of improvement of the means of which is done. Intercultural communication experiences help tourists to know and to appreciate other cultures, but also help them to a better understanding of their own culture.
The purpose of the scientific research is to suggest the model of national tourism industry competitiveness and determine the main factors that increase national tourism industry competitiveness basing on fundamental national competitiveness theories and national tourism industry competitiveness conceptions.
The overall project goal of guiding planning and management of transportation to serve the needs of : sustainable tourism focused on three tourism-related transportation contexts. The first context was : selected types of roads important to tourism i...
The overall project goal of guiding planning and management of transportation to serve the needs of : sustainable tourism focused on three tourism-related transportation contexts. The first context was : selected types of roads important to tourism i...
Camilleri, Mark Anthony
The distribution channels link the customers with the businesses. For many years, the tourism businesses may have distributed their products and services through intermediaries. However, the latest advances in technology have brought significant changes in this regard. More individuals and corporate customers are increasingly benefiting of ubiquitous technologies, including digital media. The development of mobile devices and their applications, are offering a wide range of possibilities to t...
Silvia Muhcina; Brailoiu Liviu
Tourism is a very dynamic economic sector because is very depended of environmental changes, especially now, when the global economy pass through successive crises. For the competitive organizations, the success means to transform their specific activity in a more market oriented business. The objectives of any organization must be fixed going from a better understanding of the markets. Strategic marketing means to know and analyze the consumers’ needs and the market which organization refers...
Full Text Available This paper examines the tourism and the cultural revival. Cultural change is a recurrent concern in tourism studies. Host societies frequently remodel their culture following the creation of a tourist resort. But, that does not necessarily imply an acculturating process, since what actually takes place is pragmatic cultural production work in response to the touristic demands that offer consolidated economic alternatives and livelihood. Culture change has been a concern in tourism anthropology studies ever since this field of research established itself, particularly concerning the changes host societies undergo. But that does not necessarily imply the phenomenon is to be analyzed exclusively under the focus of the acculturation paradigm, since researchers often come across the production of new cultural elements of a traditional character among host populations in their attempt to occupy new spaces from which to address the world. in fact, that applies to various social situations where local actors seek to display certain lifestyles and cultural traits in order to draw attention to their ethnic, regional, or national features. Therefore, the object of study no longer focuses on the gradual loss of local and cultural (or ethnic substance, but rather on the relative ethnicity triggered by and among translocal flows that may lead to the deliberate turnaround of different cultural aspects of the host populations. Based on those premises, this article deals with the investigation of a cultural change process, making use of the historic perspective that includes an analysis of the “strategies of cultural mobilization” activated by the social subjects that are constantly recreating themselves in the tourism areas.
Bunea-Bontaş, Cristina Aurora; Petre, Mihaela
Both on national and international scale, tourism business is improving continuously, by adjusting to the tourists' demands, resulting in modification and adaptation of organization and association forms in this area. One of these is the franchise affiliation, an original way of doing business that combines the entrepreneurs interest in keeping their own undertaking with that belongs to a group with well-known brand which aims to expand on national and international market. This paper will di...
The goal of our study was to analyse the impact of Slovenian educations institution culture on the self-assessed tourism relevant skills and competencies. Our study shows that to cope with the rapid changes in the field of tourism new educational approaches for next decades should be developed. Contemporary process is according to our findings strongly result oriented. Organizational culture on the level of the college tourism program does not stimulate the development of relevant skills and ...
Sustainable tourism is a multi-stakeholder issue, whose aim is to stimulate the balanced exploitation of natural resources at the local level and to limit the social and environmental impacts. The businesses operating in the tourism sector mainly consist of SMEs. Their impact, although less significant if considered individually, are significant at the local level, particularly considering the cumulative effects produced by tourism businesses in a specific area and the role such businesses ca...
Camilleri, Mark Anthony
This chapter introduces its readers to the concept of tourism. It sheds light on the rationale for tourism, as it explains the tourists’ inherent motivations to travel. It also describes different aspects that together make up the tourism industry. Tourists travel to destinations that are accessible to them. They require accommodation if they are visiting a place for more than twenty-four hours. Leisure and business travellers may also visit attractions, and engage themselves in recreational ...
Dr. Kaushtubh Jain*, Prem Shankar Dwivedi
Tourism is a growing service industry which contributes a substantial amount in many parts of the world. In India, Chhattisgarh is one of the important destinations for the national and international tourists with its unique and enchanting land abounding in scenic beauty, rich in flora and fauna. To make the tourism a great success one has to take advantage of the modern technology to full extent. Many countries are promoting tourism and it has become a source of major income for countries li...
Excursion tourism as a mode of travelling to closer destinations has had a long tradition and a cognitive character. Excursions belong to the specific forms of tourism trends and as such, can be viewed in terms of their significant impact on tourist trade within the Serbian tourism market. The demand for this type of tourist travel is constant, thereby highlighting its economic importance. Themed excursions of children in protected areas are developing an interest in nature and are building e...
This study reviews the current photographic tourism literature to identify what fields within tourism have been studied by researchers, the contexts, the samples used, the sampling methods employed, the photographic methods and supporting methods used, the data analysis techniques applied and the countries studied. A set of 115 relevant academic articles were selected and assessed using content analysis. The findings showed that overall publications in the field of photographic tourism increa...
González Sánchez, Cynthia; Muñoz Salinas, Francisco; Roset Calzada, Jaime
The Caribbean is a great holiday destination, along with Europe, Asia and South America. But it is one of the regions that depend more economically on the touristic sector. That is why there is a need to innovate and reinvent the touristic offer constantly. Throughout the years, tendencies and tourism types has changed and developed, adapting to the market and clients expectations. Beach hotel, all inclusive hotel offers, mountain tourism, hiking, ecotourism, city tourism, are some of the ...
Angelkova, Tanja; Koteski, Cane; Jakovlev, Zlatko; Mitreva, Elizabeta
Tourism is an activity that can have a really big impact on sustainable development. Sustainability of tourism involves extensive cooperation between tourist companies, tourist destinations and national, regional and local authorities in order to cover a broad group of challenges and at the same time to remain competitive. Opportunities for sustainable tourism development and preservation of its competitiveness, largely influenced by the quality of the environment, preserved and attractive...
Farooq, Khalid [Pall Corporation, Port Washington, NY (United States)
Varnish deposits on internal surfaces in turbine lube systems result in a number of adverse operational issues, especially the restriction and sticking of the moving parts of servo- or directional control valves, resulting in their malfunction. The lubrication fluid has limited solvency for the varnish-forming material, hence a typical turbine will have the majority of this material as deposits and a relatively small portion as suspension in the fluid phase, in quasi-equilibrium with the deposits. The lube system needs to be cleaned by removing the suspended varnish-forming material from the fluid phase, which allows the deposits to re-entrain into the fluid phase, until the majority of the transferable deposits are removed and the fluid carries no significant amount of the material to have any adverse effect. The methods used for the removal of varnish from turbine lube systems include chemical cleaning/flushing, electrostatic charge induced agglomeration/retention, and the adsorption of the varnish suspended in the oil on an adsorbent medium. The paper discusses an absorption-based removal method that utilizes a fibrous medium that has pronounced affinity for the removal and retention of the varnish-forming material from the fluid as well as the deposits from surfaces that are in quasi-equilibrium with the varnish precursors in the fluid. The filtration medium is a composite, made with cellulose bonded by specially formulated, temperature-cured resins. The absorptive medium exhibits high structural and chemical integrity and has been thoroughly tested on operating turbines, showing reduction in varnish levels from the critical range to below normal range in a relatively short time. The experience with the utilization of the absorptive medium in laboratory tests and in two operating turbines is presented. (orig.)
Castelli, Ivano Eligio; Capozza, Rosario; Vanossi, Andrea; Santoro, Giuseppe E; Manini, Nicola; Tosatti, Erio
In the framework of Langevin dynamics, we demonstrate clear evidence of the peculiar quantized sliding state, previously found in a simple one-dimensional boundary lubricated model [A. Vanossi et al., Phys. Rev. Lett. 97, 056101 (2006)], for a substantially less idealized two-dimensional description of a confined multilayer solid lubricant under shear. This dynamical state, marked by a nontrivial "quantized" ratio of the averaged lubricant center-of-mass velocity to the externally imposed sliding speed, is recovered, and shown to be robust against the effects of thermal fluctuations, quenched disorder in the confining substrates, and over a wide range of loading forces. The lubricant softness, setting the width of the propagating solitonic structures, is found to play a major role in promoting in-registry commensurate regions beneficial to this quantized sliding. By evaluating the force instantaneously exerted on the top plate, we find that this quantized sliding represents a dynamical "pinned" state, characterized by significantly low values of the kinetic friction. While the quantized sliding occurs due to solitons being driven gently, the transition to ordinary unpinned sliding regimes can involve lubricant melting due to large shear-induced Joule heating, for example at large speed.
Silica (SiO2) nanoparticles densely grafted with amphiphilic organic chains are used to create a family of organic-inorganic hybrid lubricants. Short sulfonate-functionalized alkylaryl chains covalently tethered to the particles form a dense corona brush that stabilizes them against aggregation. When these hybrid particles are dispersed in poly-α-olefin (PAO) oligomers, they form homogeneous nanocomposite fluids at both low and high particle loadings. By varying the volume fraction of the SiO2 nanostructures in the PAO nanocomposites, we show that exceptionally stable hybrid lubricants can be created and that their mechanical properties can be tuned to span the spectrum from simple liquids to complex gels. We further show that these hybrid lubricants simultaneously exhibit lower interfacial friction coefficients, enhanced wear and mechanical properties, and superior thermal stability in comparison with either PAO or its nanocomposites created at low nanoparticle loadings. Profilometry and energy dispersive X-ray spectroscopic analysis of the wear track show that the enhanced wear characteristics in PAO-SiO2 composite lubricants originate from two sources: localization of the SiO2 particles into the wear track and extension of the elastohydrodynamic lubrication regime to Sommerfeld numbers more than an order of magnitude larger than for PAO. © 2011 American Chemical Society.
Full Text Available The paper points to recent developments in the tourism sector and highlights the leading factors of the internationalization of tourists travel and of tourism services, including information technologies, as well as the internationalization of hotel and tourism enterprises. Without neglecting the huge subsector of small and medium-sized enterprises, it describes typical features related to the composition of the labour force and to working conditions. It raises questions concerning the difficulties faced by the sector in attracting and retaining skilled workers in enhancing the skills of newcomers to the labour market in order to stabilize the sector’s labour force, while increasing the productivity of enterprises and the quality of services. Particular emphasis is put on new forms of management entailing new skills requirements, with a general tendency towards increased worker responsibility in an environment of flat hierarchies, multiskilling and teamwork.
Irina A. Kiseleva
Full Text Available Article retractedThe article is devoted to the actual topic of our time - the development of tourism services. The development of tourism is the leading technology trend dynamics maroon economic caused social restructuring of modern society. Macroeconomic Financial Statistics conrms the minimum amplitude of cyclical uctuations in the service sector, which turns it into countercyclical tool. In the Russian Federation the economic problem of a state policy in the sphere of tourist services is defined - to having turned tourism in competitive, innovative, countercyclical, and highly protable sector of national business. In article pricing factors are dened and are dened key of them, responsible for the cost of a tourist product. This work answers such questions of travel company as: denition of optimum group, formation of a transport tariff, structure of a tourist product on the main and accompanying services and their range, ways of sale. A practical advice by calculation of expenses is given. Correlation and regression and cluster analyses acted as research tools when performing work. In article the conclusion is drawn that the main methods of marketing management of pricing in the market of tourist services are: transition to the unified technology of granting a service on the basis of ISO; intensication and integration of the sphere of production and services
Ueda, H; Shirakusa, T
BACKGROUND: Current techniques of management of carinal lesions are not always satisfactory. Carinal transplantation, if feasible, would be valuable in certain circumstances. METHODS AND RESULTS: Carinal transplantation experiments were performed in dogs. In early cross transplant experiments there were problems in controlling ventilation and in obtaining satisfactory anastomoses, and the animals failed to live for even a few days. In seven subsequent experiments the carinal graft was removed...
Full Text Available Dark tourism is defined as “visitation to places where tragedies or historically noteworthy death has occurred and that continue to impact our lives” Tarlow, 2005:48. Inherently, dark tourism conceptualises the consequence of a long-term conflict. This paper addresses the area of dark tourism in this context, an area which has received relatively little attention by scholars so far, focusing on its relevance to social reconciliation and urban regeneration in a re-emerging tourism economy ...
Romance tourism is a discussed quite a lot in media both in Finland and abroad. The media has create a certain kind of image of women`s romance tourism. The main aim of this study was to study how Finnish women perceive the romance tourism. The research questions were: does women travel to abroad to seek for holiday romance and why do they travel to abroad to seek for the romance. To find out women’s mental images of romance tourism was also one aim of the research. The phenomenon of women’s ...
Full Text Available Purpose – The authors identify five driving forces of changes that are shaping the discourses about food tourism. The paper aims to discuss this issue. Design/methodology/approach – The approach used by this paper is a general review. Findings – The five driving forces identified are: food tourism as political capital; food tourism as a visionary state; what it means to be a foodie; the drive for affluence and exclusivity; fluid experiences in a post-modernist world. Originality/value – The five drivers of change are identified as the core of any food tourism strategy for policy makers.
Alberto JonayRodriguez Darias
Full Text Available International tourism has been through major changes, one of them by the 1950s which resulted in conventional forms of tourism. Nevertheless, in the past two decades changes seem to go faster. The upsurge of what was labeled as “new forms of tourism” in the 1990s changed the rules in several ways, turning the planet into a tourist destination and consolidating that “anything can be sold for a tourist”. This paper intends to determine which caused these changes and begin a debate related to those (old new forms of tourism and contemporary new forms of tourism.
Patrichi Ioana Cristiana; Firoiu Daniela; Dodu Silvia Patricia
Health tourism has always been the main type of tourism in our country, due to the large number and variety of natural resources. Economic, political and social context in our country after 1990, decreased income, wear and tear reception capabilities and of the equipment used in spa cure, low foreign investment in Romanian tourism, led to a reduction efficiency of health tourism. This was reflected in the tourism statistics for the health tourism. In this paper the authors make a brief descri...
Despite the active development of rural tourism in Ukraine, this phenomenon is still under scientific study nowadays, which has been manifested by the uncertainty of the key terms; by the lack of clear boundaries, which can separate this type of tourism from other types of tourism activities; by debates about the essence and types of rural tourism. After analyzing the available information the author offers own generalized definition of rural tourism. Rural tourism is a specific entertaining ...
Adventure tourism is one of the key factors of the Nepalese tourism industry. The main aim of this bachelor’s thesis was to clarify the current situation and challenges for developing adventure tourism in Nepal and to evaluate the importance of appropriate marketing strategies. The thesis also focuses on promoting adventure tourism activities and rural tourism destinations. The objective of the thesis was to explore Dhorpatan Hunting Reserve as an adventure tourism destination at internationa...
Ahn, Hyung Joon; Kim, Hwi Won; Han, Miyeun; Jeon, Hee Jung; Kwon, Oh Jung; Ahn, Curie
This study aimed to estimate the numbers of foreign patients seeking organ transplantation (OT) in Korea and to examine the relationship between the trend of deceased donors in Korea and number of Korean patients seeking OT overseas since 2000. Data on foreigners who received a transplant in Korea were obtained from the Korean Network for Organ Sharing. Data on overseas transplants were obtained from 42 transplant centers surveyed through transplant coordinators. A total of 336 foreigners underwent OT (kidney transplantation [KT], 174; liver transplantation [LT], 162) in Korea between 2006 and 2016. The Mongolians were the most common foreigners who undergo KTs (32%), followed by the Chinese (18%), Americans (9%), and Emiratis (7%). Among foreigners undergoing LTs, the most common country of origin was Mongolia (39%), followed by United Arab Emirates (23%), China (13%), and the United States (6%). A total of 2206 Korean patients underwent overseas OT (KT, 977; LT, 1229) between 2000 and 2016. In 97% of overseas KT cases (n = 942) and 98% (n = 1205) of overseas LT cases, the transplantations were performed in China. The relationship between the number of deceased donors in Korea and the number of overseas transplants after 2006 indicates a highly negative correlation. (ρ = -0.988, P tourism.
Prahl, J. M.; Hamrock, B. J.
Two analytical models, one based on simple hydrodynamic lubrication and the other on soft elastohydrodynamic lubrication, are presented and compared to delineate the dominant physical parameters that govern the mechanics of a gaseous film between a small droplet of lubricant and the outer race of a ball bearing. Both models are based on the balance of gravity forces, air drag forces, and air film lubrication forces and incorporate a drag coefficient C sub D and a lubrication coefficient C sub L to be determined from experiment. The soft elastohydrodynamic lubrication (EHL) model considers the effects of droplet deformation and solid-surface geometry; the simpler hydrodynamic lubrication (HL) model assumes that the droplet remains essentially spherical. The droplet's angular position depended primarily on the ratio of gas inertia to droplet gravity forces and on the gas Reynolds number and weakly on the ratio of droplet gravity forces to surface tension forces (Bond number) and geometric ratios for the soft EHL. An experimental configuration in which an oil droplet is supported by an air film on the rotating outer race of a ball bearing within a pressure-controlled chamber produced measurements of droplet angular position as a function of outer-race velocity droplet size and type, and chamber pressure.
Fai, Thomas G.; Rycroft, Chris H.
Many biological examples of fluid-structure interaction, including the transit of red blood cells through the narrow slits in the spleen and the intracellular trafficking of vesicles into dendritic spines, involve the near-contact of elastic structures separated by thin layers of fluid. Motivated by such problems, we introduce an immersed boundary method that uses elements of lubrication theory to resolve thin fluid layers between immersed boundaries. We demonstrate 2nd-order accurate convergence for simple two-dimensional flows with known exact solutions to showcase the increased accuracy of this method compared to the standard immersed boundary method. Motivated by the phenomenon of wall-induced migration, we apply the lubricated immersed boundary method to simulate an elastic vesicle near a wall in shear flow. We also simulate the dynamics of a vesicle traveling through a narrow channel and observe the ability of the lubricated method to capture the vesicle motion on relatively coarse fluid grids.
Lawton, Emil A.; Yavrouian, Andre H.; Repar, John
A preliminary research program was conducted to demonstrate a new concept for additives to liquid lubricants. It was demonstrated that suspensions of o-phthalonitrile and a substituted 1,2-maleonitrile in mineral oil and dilute solutions of o-phthalonitrile and tetrafluoro-o-phthalonitrile extended the lifetime of bearings under boundary lubricating conditions. The solutions exhibited coefficients of friction under high loads of 0.02-0.03. These results were consistent with the hypothesis that these compounds react with the hot metal surface to form a planar lubricating film by means of a metal or metal oxide template reaction. Also, the adherence was very strong due to the chelating action of the planar macrocycles postulated to form under the experimental conditions.
Hamed, G.R.; Seiple, R.H.
The information contained in this report is designed to assist the air-conditioning and refrigeration industry in the selection of suitable elastomeric gasket and seal materials that will prove useful in various refrigerant and refrigeration lubricant environments. 97% of the swell measurements have been made to date. The other 3% of the measurements are contingent on availability of additional R-32. Swell behavior in the fluids have been determined using weight and in situ diameter measurements for the refrigerants and weight, diameter and thickness measurements for the lubricants. Weight and diameter measurements are repeated after 2 and 24 hours for samples removed from the refrigerant test fluids and 24 hours after removal from the lubricants.
Arkan, Irfan; Unsever, Ilker; Halioui, Salma
When looking at the increase of tourism in a destination, it can be said that tourism is a valuable part of the economy. The proposal offered by today’s competitive paradigm: that higher the number of tourists visiting a city, the higher the income, sounds good at first. The increased number of tourist arrivals gives the appearance of increasing desirability of the city. Parallel with the increased tourism activities, new buildings, new lifestyles, foreign capital and new socio-economi...
Cultural tourism is seen as a major growth market in Europe, although empirical evidence is still relatively sparse. An analysis is presented of the ATLAS survey data for 2002 as well as research conducted at the Rotterdam Cultural Capital Event in 2001. These data indicate that cultural tourism
... namely Rugby, Cricket and Soccer, and numerous other sporting, cultural and business events have successfully been hosted in the country. Macro policies governing tourism at the national level have been introduced to stimulate and guide tourism growth in such a way that the public at large can benefit. Furthermore ...
Rani, Faisyal; Oktavia, Raesa
This research explain about the efforts of United Nations World Tourism Organization (UNWTO) in dealing with sex tourism in Thailand. This research focused explaining about the role of UNWTO to fix sex tourism problem in Thailand, because sex tourism is one of the most favorite tourism in the world. UNWTO focused to protect the children because they are the biggest victim on sex tourism. This research intended to show the role of United Nations World Tourism Organization to handle the sex tou...
Choi, J.-H.; Lee, S.J.; Choi, D.-H.
This paper addresses an analytical approach to tolerance optimization for planar mechanisms with lubricated joints based on mechanical error analysis. The mobility method is applied to consider the lubrication effects at joints and planar mechanisms are stochastically defined by using the clearance vector model for mechanical error analysis. The uncertainties considered in the analysis are tolerances on link lengths and radial clearances and these are selected as design variables. To show the validity of the proposed method for mechanical error analysis, it is applied to two examples, and the results obtained are compared with those of Monte Carlo simulations. Based on the mechanical error analysis, tolerance optimizations are applied to the examples
COSMIN CIPRIAN CARABA
Full Text Available The second part of the 20th century has been marked by the competition between capitalism and communism. The “Autumn of Nations” put an end to the Eastern Bloc, but each former communist country in Central and Eastern Europe still possesses heritage sites reminding of the communist period. These heritage sites are turning into major tourist attractions, being sought by western tourists. Halfway around the world the Chinese Communist Party is trying to develop Red Tourism, a specific type of cultural tourism, based on heritage sites of the Chinese communist revolution. While the two tourism types use communist heritage as primary resource there are several differences between them. The study compares European communist heritage tourism with Chinese “Red Tourism”, analyzing their emergence, development and the problems they face, especially regarding heritage interpretation. This paper will try to provide a theoretical base for studying communist heritage tourism in former communist countries of Central and Eastern Europe.
Full Text Available Seen as a new form of manifestation of the behavior of the consumer of tourism products and services, culinary tourism has recorded an ascending trending the last years, with a positive forecast for the following years. A possible explanation for this phenomenon is the orientation and encouragement of the tourist services providers to adopt regional development strategies that harness traditional local resources and products in a context where the contemporary consumer no longer only pursues the acquisition of products and services to meet their needs, but also looks forward to new experiences that are a delight for the senses. Against this background, the present paper aims to highlight some of the characteristics of culinary tourism and to customize some of the dimensions of consumer behavior oriented towards this form of tourism, in an economy where the tertiary sector, and specifically the tourism sector, play a leading role both in Europe and worldwide.
Kargin, S.; Artyukh, Viktor; Ignatovich, I.; Dikareva, Varvara
The article considers innovative technologies in testing and production of process lubricants for hot bulk forging. There were developed new compositions of eco-friendly water-graphite process lubricants for hot extrusion and forging. New approaches to efficiency assessment of process lubricants are developed and described in the following article. Laboratory and field results are presented.
Arentoft, Mogens; Bay, Niels; Tang, Peter Torben
as lubricant reservoirs. Conventional friction tests for cold forming; ring compression and double cup extrusion tests are carried out with Molykote DX paste and mineral oil as lubricant. Both lubricants act as intended for the ring compressions test whereas only the low viscosity oil perform successfully...... in the cup extrusion test. For all specimens without the porous coating, high friction conditions are identified....
Stork, Kevin [Office of Energy Efficiency and Renewable Energy (EERE), Washington, DC (United States)
Annual progress report for Fuel & Lubricant Technologies. The Fuel & Lubricant Technologies Program supports fuels and lubricants research and development (R&D) to provide vehicle manufacturers and users with cost-competitive options that enable high fuel economy with low emissions, and contribute to petroleum displacement.
Steenberg, Thomas; Christensen, Erik; Olesen, P.
Two new lubricant systems for cold forging of stainless steel have been developed. The main component of these systems are FeCl3 and ZnCa2(PO4)2, respectively. Both lubricant systems have been tested using a backward extrusion test. The results show excellent lubricating properties with respect...
Ueda, H; Shirakusa, T
BACKGROUND: Current techniques of management of carinal lesions are not always satisfactory. Carinal transplantation, if feasible, would be valuable in certain circumstances. METHODS AND RESULTS: Carinal transplantation experiments were performed in dogs. In early cross transplant experiments there were problems in controlling ventilation and in obtaining satisfactory anastomoses, and the animals failed to live for even a few days. In seven subsequent experiments the carinal graft was removed from one dog and transplanted into a second dog. Two dogs lived for over four months with immunosuppression. CONCLUSION: The results suggest that carinal transplantation can succeed if (1) the calibre of the graft is matched with that of the recipient; (2) there is an abundant blood supply to the graft; (3) appropriate immunosuppression is provided; (4) ventilation is adequate during surgery. Images PMID:1465758
Full Text Available This paper presents a sociological view of possibilities for the development of sustainable rural tourism in Koprivnica-Krizevci county, which is located in the north-western part of Croatia. The possibilities for developing rural tourism within the concept of sustainable development have been researched through qualitative empirical research interview method. Research subjects were the owners of tourist farms, decision makers, experts and other stakeholders in the tourism development. Rural tourism represents an alternative to maritime tourism and is relatively undeveloped but important in terms of development of rural areas and family farms. This paper enables an insight into an integrated sustainability of rural tourism which consists of four dimensions: biologicalecological, economic, socio-cultural and political sustainability. In conclusion, integral sustainability in rural tourism is not achieved in all dimensions. Therefore, rural tourism could be a strategy for sustainable development for rural areas and also could be a tool for product differentiation for area that are at stagnation stage.
Maliva, Nelly; Bulkens, Maartje; Peters, Karin; Duim, Van Der René
Although gender has become an established research topic in tourism studies over the last decades, the role of religion in relation to women participating in tourism has been less explored. Moreover, gender has been mainly discussed from a Western perspective, while other viewpoints have received
C-L. Chang (Chia-Lin); H-K. Hsu (Hui-Kuang); M.J. McAleer (Michael)
markdownabstract__Abstract__ The paper uses monthly data on financial stock index returns, tourism stock sub-index returns, effective exchange rate returns and interest rate differences from April 2005 – August 2013 for Taiwan that applies Chang’s (2014) novel approach for constructing a tourism
Pitman, Tim; Broomhall, Sue; McEwan, Joanne; Majocha, Elzbieta
This article explores notions of learning in the niche market sector of educational tourism, with a focus on organised recreational tours that promote a structured learning experience as a key feature. It analyses the qualitative findings of surveys and interviews with a cross-section of educational tourism providers in Australia, their…
Pasgaard, Jens Christian
This article is rooted in theories presented in the PhD dissertation Tourism and Strategic Planning (Pasgaard 2012) and features a number of much discussed concepts related to the complicated phenomenon of tourism and to the discipline of strategic urban planning. It is beyond the scope of this a...
Zhang, Jie; Jensen, Camilla
The original research article is reprinted in this volume from Edward Elgar on the Economics and Management of Tourism: ‘Ritchie and Crouch’s book The Competitive Destination: A Sustainable Tourism Perspective (CABI, 2003) has become one of the seminal works in tourism destination research and ma...... a required reader for tourism educators, graduate students and destination managers. I anticipate it will lead to yet another surge in excellent, important research.’ – Richard Perdue, Virginia Tech, US......The original research article is reprinted in this volume from Edward Elgar on the Economics and Management of Tourism: ‘Ritchie and Crouch’s book The Competitive Destination: A Sustainable Tourism Perspective (CABI, 2003) has become one of the seminal works in tourism destination research...... and management. It engendered a number of major research papers; many of which I was pleased to publish in the Journal of Travel Research. I am excited to see Geoff and Brent continuing their work with the publication of this edited book. The list of chapter authors is a “who’s who” of tourism researchers...
Informed by actor-network theory (ANT), this research aims at improving understanding of the nature of tourism destinations in Thailand and their development by investigating through three main notions: ordering, materiality and multiplicity. These notions enabled to study how tourism
Cinelli Colombini D
Full Text Available Donatella Cinelli Colombini Orcia Doc Wine Consortium, Rocca d’Orcia , Italy Abstract: This text includes the history of wine tourism in Italy since 1993, when the first edition of the event “Cantine Aperte” (Open Cellars, Wine Day, took place. The movement grew from the initial 25 wineries to the 21,000 that participate today in opening their doors to the public, while visitors grew in numbers from a couple of hundred, 20 years ago, to the current 4 to 6 million. Wine tourists can be divided into four main groups: wine tourists by chance, classic wine tourists, talent scouts, and lovers of luxury. Each group is examined according to its consumption, its conduct, and its expectations. Wine tourism in Italy boasts around 170 territorial networks: “Strade del Vino” (wine routes regulated by law. After an initial pioneer phase during which preexisting wineries adapted to the growing number of tourists, modern-day wineries were created with bespoke areas for the welcoming of visitors. Wineries in Italy can be classified into the following main types: “functional wineries” that concentrate on productive efficiency; “cathedrals” – renovated historic buildings or modern “starchitecture” designs in which esthetics play an important role; wineries with a “strong identity” linked to the owner or wine producer with the special imprint of his or her personal wine making passion. Other features of Italian wine territories such as food and wellness centers not to speak of the ever present cultural heritage also play a part in attracting wine tourists. Lastly, an evaluation is made of business and communication aspects with a specific reference to the use of the web. Keywords: wine tourism, Italian wineries, winery tours, wine roads of Italy
Jóhannesson, Gunnar Thór; Ren, Carina Bregnholm; van der Duim, René
viable descriptions of the collective condition of humans and more-than-humans in the Anthropocene. Also and moving past a merely descriptive approach, it discusses it as a useful tool to engage with the situated globalities which come into being through the socio-spatial coupling of tourism......In recent years Actor-network theory (ANT) has increasingly been felt in the field of tourism studies (Van der Duim, Ren, & Jóhannesson, 2012). An important implication of the meeting between ANT and tourism studies is the notion of tourism being described as a heterogeneous assemblage of what we...... are used to define as the separate spheres of nature and culture. This paper explores and relates the central tenets of ANT in tourism with regard to the concept of the Anthropocene. It presents the ANT approach as a flat and object-oriented ontology and methodology and explores its potentials to carve out...
Blau, Peter J.
The topics are presented in viewgraph form and include the following: introduction and definitions of terms; friction concepts; lubrication technology concepts; wear technology concepts; and tribological transitions. This document is designed for educators who seek to teach these concepts to their students.
Fatty acid methyl ester analysis (FAME) revealed 96.89 % of monounsaturated fatty acids and esters in the range ... uniformity, hardness, disintegration and dissolution characteristics. Conclusion: Blighia sapida seed oil is a potentially useful low-cost tablet lubricant. However ... Products derived from plants sources can be ...
Anthony E. Somers
Full Text Available Due to ever increasing demands on lubricants, such as increased service intervals, reduced volumes and reduced emissions, there is a need to develop new lubricants and improved wear additives. Ionic liquids (ILs are room temperature molten salts that have recently been shown to offer many advantages in this area. The application of ILs as lubricants in a diverse range of systems has found that these materials can show remarkable protection against wear and significantly reduce friction in the neat state. Recently, some researchers have shown that a small family of ILs can also be incorporated into non-polar base oils, replacing traditional anti-wear additives, with excellent performance of the neat IL being maintained. ILs consist of large asymmetrical ions that may readily adsorb onto a metal surface and produce a thin, protective film under boundary lubrication conditions. Under extreme pressure conditions, certain IL compounds can also react to form a protective tribofilm, in particular when fluorine, phosphorus or boron atoms are present in the constituent ions.
Hence, in this thesis, a model is presented which is able to calculate a complete Stribeck curve for a mechanical face seal and, as a consequence, the transition from full film to mixed lubrication as a function of the operational conditions. This model is based on a combination of a contact model
A sealed self-lubricating fluid bearing assembly is described for circulating fluid in the form of a gas coolant in a nuclear reactor, the power for the circulator being provided by a shaft located within the primary containment vessel. In such a system the reactor coolant is isolated from the fluid region at the far end of the drive shaft. (U.K.)
Olsson, David Dam; Bay, Niels; Andreasen, Jan L.
A tribological test for deep drawing has been developed by which the performance of lubricants may be evaluated quantitatively measuring the maximum backstroke force on the punch owing to friction between tool and workpiece surface. The forming force is found not to give useful information...
Bonneau, Dominique; Souchet, Dominique
This Series provides the necessary elements to the development and validation of numerical prediction models for hydrodynamic bearings. This book describes the thermo-hydrodynamic and the thermo-elasto-hydrodynamic lubrication. The algorithms are methodically detailed and each section is thoroughly illustrated.
Munk, W. R.
Lubricating film is produced by a reaction of fluorine with a composite of aluminum oxide and nickel powder. The rate of nickel fluoride generation is proportional to the rate at which the fluoride is rubbed off the surface, allowing the seal to operate with the lowest possible heating.
Suhaila, N.; Japar, A.; Aizudin, M.; Aziz, A.; Najib Razali, Mohd
The issues on environmental pollution has brought the industries to seek the alternative green solutions for lubricating grease formulation. The significant challenges in producing modified grease are in which considering the chosen thickener as one of the environmental friendly material. The main purposes of the current research were to formulate lubricant grease using different types of base oils and to study the effect of thickener on the formulated lubricant grease. Used oil and motor oil were used as the base oils for the grease preparation. Beeswax and Damar were used as thickener and additive. The grease is tested based on its consistency, stability and oil bleeding. The prepared greases achieved grease consistency of grade 2 and 3 except for grease with unfiltered used oil. Grease formulated with used oil and synthetic oil tend to harden and loss its lubricating ability under high temperature compared to motor oil’ grease. Grease modification using environmental friendly thickener were successfully formulated but it is considered as a low temperature grease as the beeswax have low melting point of 62°C-65°C.
... arranged that condensed water vapor that might freeze and obstruct the line cannot accumulate at any point... fireproof. (9) Each unpressurized oil tank may not leak when subjected to a maximum operating temperature... supply becomes depleted due to failure of any part of the lubricating system other than the tank itself...
Perez, J. M.
A workshop to explore the technological issues involved with the removal of sulfur from lubricants and the development of low emission diesel engine oils was held in Scottsdale, Arizona, January 30 through February 1, 2000. It presented an overview of the current technology by means of panel discussions and technical presentations from industry, government, and academia.
Sivebæk, Ion Marius; Sorenson, Spencer C; Jakobsen, J.
by mixing the DME with reasonable amounts of additives. The main conclusion drawn from these measurements is that a combination of lubricity and viscosity comparable to one of diesel oil cannot be reached in the case of DME unless a huge amount of additive is used. This is not an attractive solution...
Kalogeras, Chris; Hilton, Mike; Carre, David; Didziulis, Stephen; Fleischauer, Paul
A lubricant screening test fixture has been devised in order to satisfy the need to obtain lubricant performance data in a timely manner. This fixture has been used to perform short-term tests on potential lubricants for several spacecraft applications. The results of these tests have saved time by producing qualitative performance rankings of lubricant selections prior to life testing. To date, this test fixture has been used to test lubricants for 3 particular applications. The qualitative results from these tests have been verified by life test results and have provided insight into the function of various anti-wear additives.
Zahedpisheh, Nahid; Abu Bakar, Zulqarnain B.; Saffari, Narges
The quick development of the tourism and hospitality industry can straightly influence the English language which is the most widely used and spoken language in international tourism in the twenty-first century. English for tourism has a major role in the delivery of quality service. Employees who work in the tourism and hospitality industry are…
Full Text Available Tourism or geriatric-medical and wellness tourism are market segments that lately have registered significant increases. The need to define, organize, and promote these sectors. This item is intended to synthesize developments and challenges market growth wellness and medical tourism. For the industry spa these developments may represent an opportunity to take full advantage of wellness and medical tourism.
Full Text Available Third year PhD candidate at the University of Oradea, under the guidance of Professor Mrs. Alina BÃ„Æ’dulescu in the doctoral research project entitled: "Doctoral studies and Ph.D. candidates for competitive research on a knowledge based society", a co-financed project by the European Social Fund through the Sectoral Operational Program for Human Resources Development 2007 - 2013, Priority Axis 1. "Education and training in support for growth and development of a knowledge based society" I chose to present this subject in order to demonstrate the connection that exists between tourism and development. Having as research topic "Tourism and development in the Euro regional contextÃ¢â‚¬Â I dedicated a subchapter of this thesis in presenting tourism as a development strategy. Thus we have analysed a series of specialised papers encountered at national and international level in order to achieve a synthesis about the addressed topic. Authors like Sharpley and Telfer (2002 found that the specialised literature in the tourism domain contains few articles on the relationship between tourism and development despite the fact that tourism remains an important area of the economic policy regarding development in most regions of the world. Writings on tourism, that debate development, are often written in terms of the impact of tourism on the environment in which it unfolds. Following statistical data collected on Faits saillants OMT du tourisme, 2011 Edition I found that indeed tourism is an important element in the development strategies. The research methodology that was used consisted in documentation from the specialised literature and the site http://mkt.unwto.org/sites/all/files/docpdf/unwtohighlights11frhr.pdf in order to gather representative data on the evolution of international tourism for the 1950-2010 period, also highlighting the potential success of tourism in the economic development. For this study to be more representative I
Full Text Available Milton Santos, important Brazilian geographer, stated in his writings that space is a social production through time. The present work belongs to a series of studies of Latin-American cities based on Santos´ theories. Our case study is the city of Havana. Strategically situated in the Antilles, the city always played the role of a gate to the Spanish colonies in the Americas. After the Cuban independence (1898, the Caribbean city fell under the influence of the crescent power of the United States. At the turn of the XXth century, the city which during the colonial times based its economy on trade of commodities from the mainland like tobacco or sugar, turned to be funded mainly by North American tourism. The city attracted legal investment and mafia groups equally. Disparity and growing authoritarianism led to the well known Cuban Revolution and with its socialist reforms, the city froze in time. With the Soviet collapse, the government searched for economic alternatives facing a strong U.S. embargo. Tourism appeared once more as an important source of income. Yet, this new transition raises questions like: how is this reorientation going to change spatially Havana? Or, how are deeper changes in the socialist regime going to affect the heritage and identity of the city?
Patrichi Ioana Cristiana
In the last decades dark tourism has become a significant niche segment of world tourism. Locations marked by the occurrence of catastrophic natural events have attracted a large number of tourists, as well as different sites related to the production of mass massacres or genocide. The human mind is complex. Why tourists are attracted to these places is still a subject of intense discussion by experts in the field of tourism. It may be a feature of the current period or it might have reasons ...
Full Text Available La forte croissance qu’ont connue les pays alpins dans les dernières décennies a surtout été fondée sur l’offre des activités du ski, avec comme conséquence, un massif développement immobilier, la multiplication d’infrastructures et l’extension des domaines. Aujourd’hui, le marché du ski semble arriver à saturation, la Convention alpine a mis un frein à la poursuite du développement des domaines skiables et on observe donc avec intérêt la diversification de l’offre soutenue par l’innovation. Après avoir rappelé les facteurs de changement en cours les plus significatifs dans le tourisme montagnard, l’article présente une grille interprétative de l’évolution des destinations touristiques alpines, identifiant les phases qui ont caractérisé son développement. Puis il propose une réflexion sur certaines conditions qui peuvent favoriser l’innovation dans le tourisme alpin, ainsi que sur les contradictions qui les accompagnent souvent. Dans la plupart des cas l’innovation est le résultat d’un processus qui a été lancé et qui s’est développé au sein de la communauté alpine, souvent favorisé et soutenu par des institutions nationales et internationales, et grâce auquel les difficultés structurelles qui ont déjà été abordées précédemment ont pu être surmontées avec succès.The spectacular increase in tourism in the Alps in recent decades has been founded mainly on the boom in skiing, resulting in both strong real estate development and an increasing array of infrastructures and ski runs. Today the ski market seems to have virtually reached saturation point and the winter sports sector needs to diversify its offer through innovation. After a review of the main factors of change in mountain tourism, the paper presents a grid for interpreting the life cycle of alpine destinations, identifying the phases that characterize their evolution. The conditions that may favour innovation in alpine
Chabanjuk Oleg Vasil'evich
Full Text Available The article considers a number of factors specific to the tourism industry: a multiplier effect, a kind of method of generating working capital, specific "invisible exports", the factor most risky activities, the principle of direct and inverse transformation, and others. The data of experts of the World Tourism Organization (UNWTO on tourism as an indicator of welfare. It is emphasized along with the economic function of tourism on the social dimension of tourism in its mass phenomenon. The paper highlights the main problems and shortcomings of tourism as a complex socio-economic system; analysis of theoretical approaches to periodization of tourism that reflects the genesis of approaches regarding the nature of tourism; The factors of external and internal tourism development, made their ranking to measure the relationship between the measurement periods allocated for tourism development using the Spearman rank correlation coefficient.
In Turkey, the basic and vocational education levels of the staff who are employed in tourism sector are quite low and insufficent. This situation stems from not giving the necessary importance to the tourism education and the varied chain of problems that are on each level. However; providing the best profit from the tourism industry can only be possible with the effective and quality basic and vocational tourism education. In this study; why education in tourism is required together with ba...
Standardisation of a tourism industry offering will be discussed with this article in two different ways First by reviewing previous studies on the topic definitions of standardisation tourism industry and differences between a service and a goods product will be presented Second by interviewing managers from different tourism industry sectors possibility of a tourism product’s standardisation will be outlined Key words: standardisation service product goods product tourism indust...
Adriana Anca Cristea; Mihaela Simona Apostol; Tatiana Corina Dosescu
Tourism is considered to be an important branch of the Romanian economy. However, its contribution to the GDP is extremely low. Inbound tourism is reduced, the sole indicator which is constanly increasing being the number of Romanian tourists who travel abroad. We assume that a good way of increasing domestic tourism in Romania would be to get the young population practise various forms of tourism. Conducting a market survey in consumer behaviour towards tourism products among pupils and stud...
Anamaria Sidonia RĂVAR; Maria-Cristina IORGULESCU
The past decades brought new meanings to creativity as the decline of mass tourism created impetus for the emergence of creative behavior as a major source of competitive advantage in the tourism industry. This led, in turn, to the development of a new type of tourism – creative tourism – which translates into new products and services, new collaboration and partnership structures, new forms of organization and ultimately into new experiences for consumers of tourism services. However, there...
Practicing tourism in Bucovina is a way to counteract the problems and restore them by finding solutions for economic, social, moral and political issues by natural and anthropogenic tourism potential. Promoting the area of Bucovina has various economic implications, and the increased volume and complexity of the supply of tourism generated the development of a true industry of tourism trips, which implies treating tourism phenomenon as a distinct branch of the national economy, a component o...
The article looks at the attractive factors of basic tourism resources and the structure of their attractions. The general term ‘resource’ refers to both natural and anthropogenic resources, while the content of this concept refers to elements used in creating a tourism product. Basic tourism resources are the most important factors of tourism processes, with a vital attribute of direct and indirect tourism resources being their substitutability. Natural (biotropic) resources are consid...
Sevil, Güven; Yüncü, Hilmi Rafet
Wine tourism has generated tremendous interest over the last two decades from both, both, industrial and academic circles. Wine tourism is a hybrid activity that integrates wine and tourism industries. Many wine regions and wine producers promote their wine through visitations of wineries. Wine, wine region and wine producers are main elements of wine tourism product. A successful wine tourism experience depends on point of view of producers on visitation to wineries as well as quality of win...
... that links the kidney to the bladder — is connected to your bladder. After the procedure After your ... three to eight weeks after transplant. No lifting objects weighing more than 10 pounds or exercise other ...
... Liver Function Tests Clinical Trials Liver Transplant FAQs Medical Terminology Diseases of the Liver Alagille Syndrome Alcohol-Related ... the Liver The Progression of Liver Disease FAQs Medical Terminology HOW YOU CAN HELP Sponsorship Ways to Give ...
... the primary problems with hepatitis C patients was universal recurrence of the virus after transplantation. However, with ... Fundraising Partnership & Support Share Your Story Spread the Word Give While You Shop Contact Us Donate Now ...
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... Antibodies References Abbas AK, Lichtman AH, Pillai S. Transplantation immunology. In: Abbas AK, Lichtman AH, Pillai S, eds. Cellular and Molecular Immunology. 9th ed. Philadelphia, PA: Elsevier; 2018:chap 17. ...
The pancreas is a gland behind your stomach and in front of your spine. It produces the juices that ... hormones that help control blood sugar levels. A pancreas transplant is surgery to place a healthy pancreas ...
M.ª Luisa González San José
Full Text Available Sustainability is a model of development in which the present actions should not compromise the future of future generations, and is linked to economic and social development which must respect the environment. Wine tourism or enotourism is a pleasant mode of tourism that combines the pleasure of wine-tasting, with cultural aspects related to the wine culture developing in wine regions over time until the present day. It can be affirmed that wine culture, and its use through wine tourism experiences, is clearly correlated to social (socially equitable, economic (economically feasible, environmental (environmentally sound and cultural aspects of the sustainability of winegrowing regions and territories.
Following the noted success of the 1st international conference on postdisciplinary approaches to tourism studies (held in Neuchatel, Switzerland, 19-22 June, 2013), we are happy to welcome you to the 2nd Tourism Postdisciplinarity Conference. Postdisciplinarity surpasses the boundaries...... of study less embedded in that system of thought. Postdisciplinarity is an epistemological endeavour that speaks of knowledge production and the ways in which the world of physical and social phenomena can be known. It is also an ontological discourse as it concerns what we call ‘tourism...
Anca Gabriela Turtureanu
Full Text Available For the study of tourism, the most suitable method from the geographic point of view is typify it, because it allows the delimitation oftourist areas. Tourist areas are characterized by a specific type of travel or by a reunion of some types that may vary dynamically over time. Thetypes of tourism result mainly from the different motivations of the journey, i.e. the purpose of doing. Each type of tourism is distinguished by suchspecific purpose and it is specific to those regions where fixed purpose can be achieved by the existence of some specific facilities.
Full Text Available The paper makes an attempt to justify the necessity of implementing recommendation system which will assist tourists in identification of their ideal holiday. The proposed recommendation system based on collaborative filtering notes positive impulses in the case of Macedonia. A software module is developed being capable to generate a personalized list of favorable and tailor-made items. The research outcomes indicate that the designed national tourism web portal can provide satisfactory performance and may be of high importance to all key-tourism actors in the process of identifying measures necessary for creating competitive tourism product.
Dredge, Dianne; Schott, Christian; Daniele, Roberto
. Simultaneously, rapid socio-cultural and economic changes are afoot, which are rendering the future increasingly uncertain. The jobs of today are markedly different from those of yesterday, and it seems certain that those of tomorrow will be different still. Students entering the tourism sector, with its high...... levels of volatility and rapid globalization, are going to need different skills and understandings in order to achieve meaningful and successful professional lives. It was in recognition of this landscape of change, and the demand it drives to rethink tourism education, that the Tourism Education...
Hales, Rob; Dredge, Dianne; Jamal, Tazim
and critical narratives of four tourism scholars to describe and analyse in a systematic manner the experiences of these researchers each engaged in what they consider to be academic activism. Our aim is to bring into focus and raise as matters of concern the future of tourism research in the neoliberal...... political positioning; and a critical situated approach to understanding the external influences upon our research and strivings to contribute to the public good. The paper raises challenging questions on the meaning of tourism research and the “public good” in the neoliberal university, and what being...
Full Text Available This article is concerned with cross-border tourism. It enhances the importance of cross-border cooperation in tourism. Cross-border cooperation is a form of international cooperation, along with interregional, transitional and trans-frontier cooperation. Cross-border regions often share the same historical and cultural traditions and attractive natural landscapes, such is the case of the Republic of Moldova and Romania. In both cases, cross-border regions can benefit from cooperation – cooperation can help create greater diversity and differentiation of the range of tourism and environmental products; create economies of scale and make promotion more effective, and can help better address specific problems or issues for tourism development.
Full Text Available The tourism footprint family comprises the tourism ecological footprint (TEF, the tourism carbon footprint (TCF and the tourism water footprint (TWF. The tourism footprint represents an important tool for quantitatively assessing the impact of tourism activities on the ecosystem of a tourist destination. This paper systematically reviews the relevant literature on TEF, TCF and TWF, analyses and summarizes the main progress and failures in the analytical frameworks, research methods, measurement results, environmental impacts and reductions in the tourism footprint. This paper also proposes areas for further developing the tourism footprint research, including unifying the analytical frameworks and boundaries of the tourism footprint, distinguishing the geographical scope of the tourism footprint effectively, improving the process of analyzing the environmental impact of the tourism footprint, measuring the tourism footprint scientifically and roundly, performing space-time calculations of the tourism footprint, and expanding the tourism footprint family by introducing new members. Accordingly, this paper is devoted to the continued study of the tourism footprint.
Brida, J.G.; Disegna, Marta; Osti, L.
The purpose of this paper is to explore residents' perceptions of tourism impacts and how they affect attitudes towards local tourism policies. Particular attention is paid to the analysis of community attachment and employment sector of residents. This study presents the results of a quantitative survey among residing families of a small mountain community located in the North-East of Italy. The findings reveal that residents perceptions on economic, environmental and socio-cultural impacts ...
Zejda Pavel; Zejda David
Academics perceive a great potential of virtual worlds in various areas, including tourism and education. Efforts adapting the virtual worlds in practice are, however, still marginal. There is no clear definition of the virtual world. Therefore the author of this article attempts to provide one. The paper also focuses on the barriers of a wider exploitation of the virtual worlds and discusses the principles that might help to increase their potential in tourism area. One of the principles – g...
Seen as a new form of manifestation of the behavior of the consumer of tourism products and services, culinary tourism has recorded an ascending trending the last years, with a positive forecast for the following years. A possible explanation for this phenomenon is the orientation and encouragement of the tourist services providers to adopt regional development strategies that harness traditional local resources and products in a context where the contemporary consumer no longer only pursues ...
Caraba, Cosmin Ciprian
"Communist heritage tourism and red tourism: concepts, development and problems. The second part of the 20th century has been marked by the competition between capitalism and communism. The “Autumn of Nations” put an end to the Eastern Bloc, but each former communist country in Central and Eastern Europe still possesses heritage sites reminding of the communist period. These heritage sites are turning into major tourist attractions, being sought by western tourists. Halfway around the worl...
ÇEKEN, Hüseyin; DALGIN, Taner; ÇAKIR, Neşe
New tourism trends in the world are developing in the direction of history, health, trekking, cultural and rural tourism depending on the demand. The importance of rural tourism is increasing day by day both in developed and developing countries as being alternative to or complimentary to existing tourism types. There is a great effort in the world to reinforce economies of rural areas by using touristic supply sources for rural tourism purposes. The achievements in the rural tourism applicat...
STOICA Ana-Maria; CRETOIU Raluca Ionela
The latest trends in tourism emphasize the power of the globalized tourist-consumer, in the context of mondialisation of the market and of the diversity of tourism services, the tourism organizations must answer to a range of different tourism motivations meant to meet the needs and wishes of the tourism consumers over the period they travel for. Tourism marketing is a result of globalization, since, just like the globalization process, it creates links between the states of the world, the au...
Full Text Available In recent decades, tourism has grown to become a major economic activity in some areas in Romania. Contributors to this growth were the changes in travel consumer in terms of their motivations and how to spend holidays and vacations. West Development Region, in general, and county of Arad, in particular, is one of the areas where tourism is growing more and more. The region is one of the most specific in Romania, because this county there is at the border with Hungary, so is a gate for exit to West of Europe. This county has a special charm to the cultural heritage of the popular ethnographic areas in this part of Romania. Impact or implications of rural tourism refers to tourist industry effects on the local community, the area and the tourists. The impact of tourism can be positive or negative, depending on the effect they induce on the community or area. To study the impact of rural tourism, as emphasized in the literature, we have to analyze all government and local administration, entrepreneurs, residents and tourists. In this paper we want to present the main economic implications of rural tourism on the government and local administration, entrepreneurs, residents and tourists
Mohumad F. Alzoubi; George R. Fenske; Robert A. Erck; Amrit S. Boparai
Lubrication of wheel/rail systems has been recognized for the last two decades as a very important issue for railroads. Energy savings and less friction and wear can be realized if a lubricant can be used at the wheel/rail interface. On the other hand, adverse influences are seen in operating and wear conditions if improper or excessive lubrication is used. Also, inefficiencies in lubrication need to be avoided for economic and environmental reasons. The top-of-rail (TOR) lubricant concept was developed by Texaco Corporation to lubricate wheels and rails effectively and efficiently. Tranergy Corporation has been developing its SENTRAEN 2000(trademark) lubrication system for the last ten years, and this revolutionary new high-tech on-board rail lubrication system promises to dramatically improve the energy efficiency, performance, safety, and track environment of railroads. The system is fully computer-controlled and ensures that all of the lubricant is consumed as the end of the train passes. Lubricant quantity dispensed is a function of grade, speed, curve, and axle load. Tranergy also has its LA4000(trademark) wheel and rail simulator, a lubrication and traction testing apparatus. The primary task of this project was collecting and analyzing the volatile and semivolatile compounds produced as the lubricant was used. The volatile organic compounds were collected by Carbotrap cartridges and analyzed by adsorption and gas chromatography/mass spectrometry (GC/MS). The semivolatile fraction was obtained by collecting liquid that dripped from the test wheel. The collected material was also analyzed by GC/MS. Both of these analyses were qualitative. The results indicated that in the volatile fraction, the only compounds on the Environmental Protection Agency's (EPA) Superfund List of Analytes detected were contaminants either in the room air or from other potential contamination sources in the laboratory. Similarly, in the semivolatile fraction none of the detected
Full Text Available In the territory of Ravenna there are many tourist attractions that individually work well, but they need to relate to each others. So I had the idea of a linear park that connects Ravenna with Cervia defining a “tourist district” which offers to the tourist / traveler a unique experience in harmony with the land and the history of the place. In the park it is promoted an un-motorized mobility and infobox are disposed to inform the tourist in proximity of train stops from which you can download the application for smartphones Tourism.art by reading QR codes or NFC codes, which provides users with a “program travel “ describing the activities to do. In addition, I propose a typology of diffused hotel that allows users to temporarily live in places of historical and natural interest.
Dredge, Dianne; Gyimóthy, Szilvia
The digital collaborative economy is one of the most fascinating developments to have claimed our attention in the last decade. Not only does it defy clear definition, but its historical links back to non-monetised sharing and gift economies and its contemporary foundations in monetising idling...... or spare capacity make it difficult to theorise. In this chapter, we lay the foundation for a social science approach to the exploration of the collaborative economy and its relationship with tourism. We argue that “collaborative” and “economy” should be conceptualised in a broad and inclusive manner...... in order to avoid narrow theorisations and blinkered accounts that focus only on digitally-mediated, monetised transactions. A balance between individual and collective dimensions of the collaborative economy is also necessary if we are to understand its societal implications....
Jensen, Susanne; Svendsen, Gert Tinggaard
How does terrorism affect social trust and tourism? The rising number of terrorist attacks in Western Europe has caused safety problems not only for local citizens but also for tourists. In fact, terrorists challenge the formal violence monopoly of the state thus creating a sense of anarchy...... and distrust. Social trust is about trusting strangers, so when less predictable behaviour occurs in, a given country, people become more careful as they tend to trust most other people less. An interesting case for future research is Scandinavia as the level of terrorism is still low and, at the same time......, Scandinavia can record most social trust in the world meaning a competitive advantage when attracting tourists. Arguably, a double dividend is created from fighting terrorism, namely more social trust accumulated and more tourists attracted. Future research should therefore try to further test our model...
Blichfeldt, Bodil Stilling; Kvistgaard, Hans-Peter; Hird, John
This article discuss es know ledge, competencies and skills Master’s students should obtain during their academic studies and particularly, the differences between teaching about a topic and teaching to do. This is ex emplified by experiential learning theory and the case of a change management...... course that is part of a Tourism Master’s program, where a major challenge is not only to teach students about change and change agents, but to teach them how change feels and ho w to become change agents. The c hange management course contains an experiment inspired by experiential teaching literature...... and methods. The experiment seeks to make students not only hear/learn about change agency and management, but to make them feel cha nge, hereby enabling them to develop the skills and competencies necessary for them to take on the role as change agent s and thus enable them to play key role s in implementing...
Van Kerkwijk, C
Many foreigners visit Thailand in search of sex. While long-distance tourism was long enjoyed by members of more privileged social classes, even the lower economical classes of Japan, Malaysia, Europe, America, and Australia can now afford to travel over long distances. This relatively new breed of tourist is more likely to be of lower socioeconomic and educational status and less likely to use condoms when having sex. An estimated 30,000 sex workers are active in Bangkok, of whom 7000/10,000 are females who work specifically in the tourism sector. 1/2-1/3 of the 600 commercial sex establishments in the city are visited by foreigners. Phuket, Pattaya, Koh Samui, and Chiangmai are also well-frequented by sex tourists. Overall, a large, diverse, inexpensive, and accessible commercial sex market exists in Thailand. One may meet sex workers quasi-ubiquitously and be assured to find someone capable of meeting one's sexual needs. With these attributes, Thailand strongly attracts tourists in search of sex. A certain degree of recklessness also prevails among those on vacation. Away from the peers and social mores of their native lands, tourists may engage in sexually activities without criticism. Likewise, Thai sex workers who cater to foreigners, especially females, enjoy more freedom and control in sexual relations than their peers who work among nationals. Neither single nor married women in Thailand are allowed much sexual freedom and are traditionally expected to be obliging docile, and submissive. The greater than normal personal latitude enjoyed by both sex worker and foreigner lead to more negotiation on condom use and overall lower use. As such, Thailand's commercial sex market with foreigners' involvement therein threatens to spread HIV to many other countries throughout the world.
Herold, E S; Van Kerkwijk, C
Tourists traveling internationally lower their inhibitions and take greater risks than they would typically in their home cultures. Loneliness, boredom, and a sense of freedom contribute to this behavioral change. Some tourists travel internationally in search of sexual gratification. This motivation may be actively conscious or subconscious to the traveler. Billed as romantic with great natural beauty, Thailand, the Philippines, Brazil, the Dominican Republic, and Kenya are popular destinations of tourists seeking sex. The Netherlands and countries in eastern Europe are also popular. With most initial cases of HIV infection in Europe having histories of international travel, mass tourism is a major factor in the international transmission of AIDS. While abroad, tourists have sex with casual partners, sex workers, and/or other tourists. Far from all tourists, however, carry and consistently use condoms with these partners. One study found female and non white travelers to be less likely than Whites and males to carry condoms. The risk of HIV infection increases in circumstances where condoms are not readily available in the host country and/or are of poor quality. Regarding actual condom use, a study found only 34% of sex tourists from Switzerland to consistently use condoms while abroad. 28% of men in an STD clinic in Melbourne, Australia, reported consistent condom use in sexual relations while traveling in Asia; STDs were identified in 73% of men examined. The few studies of tourists suggest that a significant proportion engage in risky behavior while traveling. HIV prevalence is rapidly increasing in countries known as destinations for sex tourism. High infection rates are especially evident among teenage sex workers in Thailand. Simply documenting the prevalence of risky behavior among sex tourists will not suffice. More research is needed on travelers and AIDS with particular attention upon the motivating factors supporting persistent high-risk behavior.
Ozkan, Jerome; Papas, Eric
To investigate the influence of three lubricants of varying viscosity, on postinsertion and 6 h comfort with contact lens wear. Comfort and associated symptoms of dryness were assessed in 15 experienced contact lens wearers. Subjects wore a low Dk lens in one eye and a silicone hydrogel in the other and participated in four separate trials involving no lubricant (baseline), saline, and two commercially available lubricants of differing viscosity. The in-eye lubricants were used immediately following lens insertion and every 2 h postinsertion for a 6 h wear period. Postlens insertion comfort was significantly better for both lens types when lubricants or saline were used compared with no lubricant use. After 6 h lens wear, comfort was influenced by lens type and not by in-eye lubricant or saline use. Also after 6 h lens wear, less dryness sensation was reported for silicone hydrogel lenses when using lubricants but not saline. Although lubricant use does help reduce dryness symptoms with silicone hydrogel lens wear, there appears to be minimal longer-term benefit to comfort. Furthermore, increased lubricant viscosity did not lead to improved longer-term comfort.
Luis Augusto Severo Soares
Full Text Available In this article, one searches to reflect on the implications of the globalization in the tourism, being recognized the possibility to carry through distinct comments on this phenomenon and its effect in the tourism, beyond arguing the consensus that defines it. Front to this objective, we will deal with the globalization as a movement preceded for the mundialization processes and internationalization that generates many transformations in the society, that is, an interlaced movement to a series of resolutions that intervene with the tourism. With the objective to direct the analysis to the specific field of study, it will be presented, from the perspective of Boaventura de Souza Santos, some of the influences in the tourist activity, having understood them as necessary points in order to the planners and administrators of the tourism understand it and motivate it without limiting themselves to the ways proposed by the consensus that exists in the idea of globalization.
Beslan V. Labzhaniya
Full Text Available Tourism offers a real opportunity to invite investments, decline unemployment and increase production, which will help to overcome crisis and come to sustainable development, badly needed for Greece now.
Full Text Available An observed trend, which can be defined as tourist interest in natural hazards and disasters, has persuaded the authors to attempt to research several issues, including tourist motivations and specific tourism properties and functions of this form of activity. The objective also covered the allocation of this social and natural process in the general structure of tourism. This interest has a long history, and a new stage is currently forming, which partly results from factors affecting society, such as information and education, which provoke antagonistic reactions. Extreme natural phenomena entail a common reduction of tourist interest in the destination which hosted the event; however, it never drops to zero. Differences are visible depending on the type of phenomenon. On the other hand, natural hazards and disasters are considered to hold a specific tourism value. This article discusses the allocation of this human activity in the tourism forms known to scientists, accounting for its diversity and relating to ethics.
Olsen, Lise Smed
through stakeholder collaboration in Jokkmokk, Sweden and Kautokeino, Norway. The study indicates that collaboration between destination marketing organisations and Sami stakeholders has been initiated and has improved destination marketing. Conflicts relating to indigenous identity and land use are more......Indigenous tourism has become an important component of the tourism industry. Previous indigenous tourism research has indicated three conflict areas that can have an impact on destination development - internal conflicts over indigenous identity, the use of indigenous culture in destination...... marketing, and land-use conflicts. To varying degrees these areas of conflict have been found to impact local and regional destination development in northern Europe. This paper draws on case studies to understand how conflicts in Sami tourism in local and regional destination development are addressed...
Yury F. Lukin
Full Text Available In the new book "Arctic tourism in Russia" the basic concepts, resource potential, attractiveness (from Lat. Attrahere: to attract, opportunities and threats of environmental, cruise, international, and other types of tourism in the Arctic are system-based analyzed, for the first time in the literature. The sphere of tourism has becoming an integral sector of the economy, having a multiplicative effect for the development of infrastructure, social services, employment. Reference materials about the tourism products in the Russian Arctic and Far North regions are published, including the Arkhangelsk and Murmansk regions; Republic of Karelia, Komi, Sakha (Yakutia; Nenets, the Yamalo-Nenets, Khanty-Mansiysk, the Chukotka Autonomous Districts; Taimyr Dolgan-Nenets Municipal District, Turukhansk district, the city of Norilsk of the Krasnoyarsk region; Magadan region, Kamchatka region.
Conley, Peter L.; Bohner, John J.
Since the late 1970's, the wet lubricant of choice for space mechanisms has been one of the family of synthetic perfluoro polyalkylether (PFPE) compounds, namely Fomblin Z-25 (Bray-815Z) or DuPont's Krytox 143xx series. While offering the advantages of extremely low vapor pressures and wide temperature ranges, these oils and derived greases have a complex chemistry compared to the more familiar natural and synthetic hydrocarbons. Many aerospace companies have conducted test programs to characterize the behavior of these compounds in a space environment, resulting in a large body of hard knowledge as well as considerable space lore concerning the suitability of the lubricants for particular applications and techniques for successful application. The facts are summarized and a few myths about the compounds are dispelled, and some performance guidelines for the mechanism design engineer are provided.
Rho, Byoung Hoo; Kim, Kyung Woong
The purpose of the paper is to provide a procedure to calculate the noise of oil lubricated journal bearings. To do this, the nonlinear transient analysis of rotor-bearing system including rotor imbalance is performed. Acoustical properties of the bearing are investigated through frequency analysis of the pressure fluctuation of the fluid film calculated from the nonlinear analysis. Furthermore, a transmission theory of plane waves on a boundary of the outer surface of the bearing is used to obtain the sound pressure level of the bearing. Results show that the sound pressure level of the bearing can be increased with the rotational speed of the rotor although the whirl amplitude of the rotor is decreased at high speed. Noise estimating procedures presented in this paper could be an aid in the evaluation and understanding of acoustical properties of oil lubricated journal bearings
This article provides a historical overview and reading of seminal Irish film from the perspective of nature tourism. Within Irish cultural studies, tourism is frequently equated with an overly romantic image of the island, which has been used to sell the country abroad. However, using notions like the tourist gaze and taking on board influential debates around space/place, one can posit a more progressive environmental vision of nature and landscape in our readings of film.
Smith, Lesley Jane; Hörl, Kay-Uwe
The commercial concept of space tourism raises important legal issues not specifically addressed by first generation rules of international spacelaw. The principles established in the nineteen sixties and seventies were inspired by the philosophy that exploration of space was undertaken by and for the benefit of mankind. Technical developments since then haveincreased the potential for new space applications, with a corresponding increase in commercial interest in space. If space tourism is t...
Tica, Josip; Kožić, Ivan
The aim of this paper is to present a forecasting model for the overnight stays of foreign tourists in Croatia. Tourism is one of the most important parts of the Croatian economy. It is particularly important in the context of the services sector. Regular and significant surpluses and the consumption of foreign guests are an important element of budget revenues, especially VAT. The ability to forecast the development of inbound tourism demand in a timely manner is crucial for both business...
Spiritual tourism as a phenomenon is increasing worldwide. Many have conducted research looking at the intersection between religion and tourism, but few have focused on the host community within these encounters. Many Western tourists arrive in Kathmandu to go on retreats', and to participate in yoga and meditation classes. The majority of these are particularly interested in various forms of Buddhist practice and traditions. In this thesis I have studied how N...
Nelson Barber, Nelson; Taylor,Chris; Deale,Cynthia
Christopher Taylor1, Nelson Barber2, Cynthia Deale31School of Business, Eastern New Mexico University, Portales, Roosevelt County, NM, USA; 2Whittemore School of Business, University of New Hampshire, Durham, NH, USA; 3Department of Hospitality Management, East Carolina University, Greenville, NC , USAAbstract: Wine tourism marketers frequently seek new ways to promote destinations, often executing ecologically sustainable practices. As consumer environmental knowledge of a wine tourism desti...
Summary The study of National Tourism System in Jordan aims to shed some light on the structure of tourism industry in Jordan by illustrating the real resources present in the country, assessing the quality of services, and then exploring the management efficiency, ie. Governance dimension. The work has been based on the structure provided by the Resource-based Theory (RBT) which gives a significant weight to the existed resources in the territory and considers them as an important fac...
Full Text Available Purpose – Tourism 2025 – Growing Value Together/Whakatipu Uara Ngatahi is a framework to unite New Zealand's large and diverse tourism industry and ignite strong, aspirational economic growth. Its goal is to see the tourism industry contribute $41 billion a year to the New Zealand economy by 2025, up from $24 billion now. It provides vital context for some collective actions by big or small industry clusters and for thousands of actions individual businesses will take each year. The paper aims to discuss these issues. Design/methodology/approach – A wide range of tourism industry stakeholders were consulted over an 18-month period to ensure the project was being developed on a solid, evidence-based foundation. There was strong stakeholder support for a framework which the private sector takes ownership of and responsibility for, but which also recognises that public sector support is vital. The project team developed a "straw-man" growth framework model which resulted in carrying out detailed investigations and consultation to test and, where necessary, adjust that model into its final form. Findings – There were four major forces shaping the global tourism market. There was one positive force for New Zealand countered by three tough challenges. The strawman growth framework comprised five separate yet inter-connected “cycle of growth” themes. These themes are relatively consistent with global national tourism plans that were studied. Used intelligently and in harmony, with the industry fully understanding the inter-relationships and inter-dependencies within the "cycle of growth", the key themes enable the tourism industry to successfully come to grips with the challenges and opportunities ahead. Originality/value – Tourism 2025 is aimed at aligning the industry on a pathway towards aspirational growth.
The industrialization of the production and business of photography occurred alongside the profound rise of the tourism industry at the turn of the twentieth century. Companies specializing in the photographic image, premised on photographic agencies, were formed in Paris, where they held a place of importance in the landscape of French tourism. How were these businesses structured, and what strategies did they employ to insinuate themselves locally, in the heart of tourist sites themselves? ...
This volume offers methodological discussions within the multidisciplinary field of tourism and shows how tourism researchers develop and apply new tourism methodologies. The book is presented as an anthology, giving voice to many diverse researchers who reflect on tourism methodology in differen...... codings and analysis, and tapping into the global network of social media.......This volume offers methodological discussions within the multidisciplinary field of tourism and shows how tourism researchers develop and apply new tourism methodologies. The book is presented as an anthology, giving voice to many diverse researchers who reflect on tourism methodology in different...... in interview and field work situations, and how do we engage with the performative aspects of tourism as a field of study? The book acknowledges that research is also performance and that it constitutes an aspect of intervention in the situations and contexts it is trying to explore. This is an issue dealt...
Limaye, P.K.; Soni, N.L.; Agrawal, R.G.
Water Lubricated Bearings (WLB) are used in various mechanisms of fuel handling systems of PHWRs and AHWR. Availability and random failures of these bearings was a major factor in refuelling operations. Indigenous development of these bearings was taken up and 7 types of antifriction bearings in various sizes (totaling 37 variants) for PHWR, AHWR and Dhruva applications were successfully developed. This paper deals with various aspects of WLB development. (author)
Co-creation has become a buzzword in many social science disciplines, in business and in tourism studies. Given the prominence of co-creation, surprisingly little discussion has evolved around its implications for research practices and knowledge production as well as what challenges there are fo......Co-creation has become a buzzword in many social science disciplines, in business and in tourism studies. Given the prominence of co-creation, surprisingly little discussion has evolved around its implications for research practices and knowledge production as well as what challenges...... there are for fulfilling the promise of co-creation in tourism research. This book aims to contribute to this discussion by addressing how tourism research comes together as a collaborative achievement and by exploring different ways of collaborative knowledge production in tourism research. It is structured to offer......, on one hand, an introduction to the ontological basis for collaborative research and, on the other hand, a set of empirical examples of how collaborative knowledge creation can inform tourism design, management, policy and education. The theoretical accounts and empirical cases of this book display how...
Full Text Available Tourism industry in the Philippines has been identified as one of the powerful engines for a strong and sustained economic growth. To determine whether the Philippine tourism industry is moving towards sustainable development, this paper explores the evolution of the tourism industry in the Philippines by tracing its historical transformations and determining its typology. Four major periods has been recognized, namely: 1] pre-martial law era (years before 1972; 2] martial law era (1972-1986; 3] post-martial law era (1986-2000; and 4] 21st century era (2001-present. The eras are based on the country’s major political regimes. Corresponding events and numerous initiatives undertaken by the government agencies, non-government organizations and private sectors that significantly affect the tourism industry are described and analyzed. It is concluded that tourism is a well established industry in the Philippines that contributes to an inclusive economic growth of the country. The continued concerted efforts of all the stakeholders of the industry in the implementation of all these initiatives will surely lead to a sustainable Philippine tourism.
Mamtseva, M.V.; Kardash, N.V.; Latynina, M.B.
In the interest of environmental protection, improvement of working conditions, and reduced fire hazard in production operations, water-based protective lubricants are now available in a wide assortment, and the production volume has increased greatly. The term water-dilutable inhibited protective lubricants (WDIPL) means water-soluble, water-emulsifiable, or water-dispersible products with the dual function of reducing friction and wear and protecting metal surfaces against corrosion for specified periods of time. According to the standard Unified System of Protection Against Corrosion and Aging (COST 9.103-78), WDIPLs are classed as products for the temporary corrosion protection of metals and end-items. In the general class of WDIPLs one can identify water-dilutable combination corrosion inhibitors, film-forming inhibited petroleum compositions (FIPC-d), detergent-preservative fluids, operational-preservative lubricating-cooling process compounds (ICPC), and, finally, universal multifunctional products. Combined corrosion inhibitors may consist of water-soluble organic and inorganic compounds; water/oil and oil-soluble surfactants - corrosion inhibitors of the chemisorption type or donor and/or acceptor types; shielding inhibitors of the adsorption type; and fast-acting water-displacing components. 23 refs
Pompili, Maurizio; Mirante, Vincenzo Giorgio; Rapaccini, Gian Ludovico; Gasbarrini, Giovanni
Liver transplantation represents the first choice treatment for patients with fulminant acute hepatitis and for patients with chronic liver disease and advanced functional failure. Patients in the waiting list for liver transplantation are classified according to the severity of their clinical conditions (evaluated using staging systems mostly based on hematochemical parameters related to liver function). This classification, together with the blood group and the body size compatibility, remains the main criterion for organ allocation. The main indications for liver transplantation are cirrhosis (mainly HCV-, HBV- and alcohol-related) and hepatocellular carcinoma emerging in cirrhosis in adult patients, biliary atresia and some inborn errors of metabolism in pediatric patients. In adults the overall 5-year survival ranges between 60 and 70%, in both American and European series. Even better results have been reported for pediatric patients: in fact, the 5-year survival rate for children ranges between 70 and 80% in the main published series. In this study we evaluated the main medical problems correlated with liver transplantation such as immunosuppressive treatment, acute and chronic rejection, infectious complications, the recurrence of the liver disease leading to transplantation, and cardiovascular and metabolic complications.
Washizu, Hitoshi; Sanda, Shuzo; Hyodo, Shi-aki; Ohmori, Toshihide; Nishino, Noriaki; Suzuki, Atsushi
Friction control of machine elements on a molecular level is a challenging subject in vehicle technology. We describe the molecular dynamics studies of friction in two significant lubrication regimes. As a case of elastohydrodynamic lubrication, we introduce the mechanism of momentum transfer related to the molecular structure of the hydrocarbon fluids, phase transition of the fluids under high pressure, and a submicron thickness simulation of the oil film using a tera-flops computer. For boundary lubrication, the dynamic behavior of water molecules on hydrophilic and hydrophobic silicon surfaces under a shear condition is studied. The dynamic structure of the hydrogen bond network on the hydrophilic surface is related to the low friction of the diamond-like carbon containing silicon (DLC-Si) coating
Full Text Available Owing to the high power requirements of tractors, their low-power transmission gears often experience durability problems such as burning of the clutch. The operation of tractors under high load conditions also causes clutch slip, with the consequent longer operation duration exacerbating the burning of the friction plate. Solving this problem requires effective lubricant distribution. This was achieved in the present study by the development of an analysis model for predicting the lubricant flow rate. The reliability of the model was verified by comparing its predictions for various operation conditions with experimental measurements. Using the model, it was determined that effective distribution of the lubricant could be achieved without significant modification of the system, by only adjusting the gaps between the clutch piston and the housing, and between the separation plates and the case. Keywords: Mechanical engineering
Zoltán Bujdosó; Csaba Szûcs
Due to the interest in the development of gastronomy and the food and beverage culture of different countries and regions, culinary travel is gaining in popularity all over the world and gastronomic tourism has become an independent product on its own within tourism. Beer tourism has become an integrated part of gastronomic tourism. The purpose of this paper is to place beer tourism, which attracts a growing number of visitors, as a product into the system of tourism as well as to review its ...
Full Text Available Globalisation and new information technology are bringing significant changes to tourism. Tourism experiences are now increasingly being co-produced by tourism companies, tourists and local residents. This has significant implications for cities such as Barcelona, where there has been an explosion of new tourism products through new intermediaries such as Airbnb. As a result, tourism is penetrating further into the fabric of the city, and is also being produced by the residents of Barcelona themselves. Perhaps for this reason they complain less about the negative effects of tourism than might be expected.
Mogaka, John J O; Mupara, Lucia; Tsoka-Gwegweni, Joyce M
Global disparities in medical technologies, laws, economic inequities, and social-cultural differences drive medical tourism (MT), the practice of travelling to consume healthcare that is either too delayed, unavailable, unaffordable or legally proscribed at home. Africa is simultaneously a source and destination for MT. MT however, presents a new and challenging health ethics frontier, being largely unregulated and characterized by policy contradictions, minority discrimination and conflict of interest among role-players. This article assesses the level of knowledge of MT and its associated ethical issues in Africa; it also identifies critical research gaps on the subject in the region. Exploratory design guided by Arksey and O'Malley's (2005) framework was used. Key search terms and prior determined exclusion/inclusion criteria were used to identify relevant literature sources. Fifty-seven articles met the inclusion criteria. Distributive justice, healthcare resource allocation, experimental treatments and organ transplant were the most common ethical issues of medical tourism in Africa. The dearth of robust engagement of MT and healthcare ethics, as identified through this review, calls for more rigorous research on this subject. Although the bulk of the medical tourism industry is driven by global legal disparities based on ethical considerations, little attention has been given to this subject.
Mogaka, John J. O.; Mupara, Lucia; Tsoka-Gwegweni, Joyce M
ABSTRACT Global disparities in medical technologies, laws, economic inequities, and social–cultural differences drive medical tourism (MT), the practice of travelling to consume healthcare that is either too delayed, unavailable, unaffordable or legally proscribed at home. Africa is simultaneously a source and destination for MT. MT however, presents a new and challenging health ethics frontier, being largely unregulated and characterized by policy contradictions, minority discrimination and conflict of interest among role-players. This article assesses the level of knowledge of MT and its associated ethical issues in Africa; it also identifies critical research gaps on the subject in the region. Exploratory design guided by Arksey and O’Malley’s (2005) framework was used. Key search terms and prior determined exclusion/inclusion criteria were used to identify relevant literature sources. Fifty-seven articles met the inclusion criteria. Distributive justice, healthcare resource allocation, experimental treatments and organ transplant were the most common ethical issues of medical tourism in Africa. The dearth of robust engagement of MT and healthcare ethics, as identified through this review, calls for more rigorous research on this subject. Although the bulk of the medical tourism industry is driven by global legal disparities based on ethical considerations, little attention has been given to this subject. PMID:28740618
Sustainable tourism is a new concept for tourism sector; it is tourism that reduces negative tourism impacts and brings benefits instead. The current problem of sustainable tourism is lack of attractive tourism products. Their development is crucial since customers seek for experiences at a destination. Russians are an important segment for Finnish tourism, therefore their consumer behaviours has to be studied. The aim of this research is to find how to develop a tourism product for susta...
Chandra, J.; Phillips, R.R.; Boardman, P.; Gleeson, F.V.; Anderson, E.M.
Cadaveric, whole pancreas transplantation has proved an effective therapy in the treatment of long-standing type 1 diabetes mellitus and is capable of achieving an insulin-independent eugyclaemic state. As a result, this procedure is being increasingly performed. However, the surgical procedure is complex and unfamiliar to many radiologists. Imaging with computed tomography (CT) and magnetic resonance imaging (MRI) gives excellent results and can be used confidently to diagnose vascular, enteric, and immune-mediated complications. We present a review of the normal post-transplantation appearance and the features of early and late complications.
Chandra, J.; Phillips, R.R.; Boardman, P.; Gleeson, F.V. [Department of Radiology, Churchill Hospital, Headington, Oxford (United Kingdom); Anderson, E.M. [Department of Radiology, Churchill Hospital, Headington, Oxford (United Kingdom)], E-mail: firstname.lastname@example.org
Cadaveric, whole pancreas transplantation has proved an effective therapy in the treatment of long-standing type 1 diabetes mellitus and is capable of achieving an insulin-independent eugyclaemic state. As a result, this procedure is being increasingly performed. However, the surgical procedure is complex and unfamiliar to many radiologists. Imaging with computed tomography (CT) and magnetic resonance imaging (MRI) gives excellent results and can be used confidently to diagnose vascular, enteric, and immune-mediated complications. We present a review of the normal post-transplantation appearance and the features of early and late complications.
Snider, J.F.; Hunter, D.W.; Castaneda-Zuniga, W.R.; Letourneau, J.G.
Pancreas transplantation can be complicated by vascular thrombosis, stenosis, or anastomotic leak, complications that predispose to transplant pancreatectomy. The relative roles of noninvasive radiologic studies in such vascular complications have been correlated with angiographic or pathologic data. The results of 54 scintigraphic studies, 25 CT studies, 16 sonograms, and 23 color Doppler examinations have been correlated with those of 40 angiograms and 28 pathologic studies in a population of 185 recipients. CT (sensitivity, 100%; specificity, 75%; accuracy, 92%) and US (sensitivity, 88%; specificity, 80%; accuracy, 85%) were most helpful in noninvasive screening for vascular complications, while angiography remains nearly definite in the radiographic diagnosis of these problems
Seo, Young Woo; Rosenkranz, Andreas; Talke, Frank E.
In this study, molecular dynamics simulations were performed to numerically investigate the effect of pulsed laser heating on lubricant depletion. The maximum temperature, the lubricant depletion width, the number of evaporated lubricant beads and the number of fragmented lubricant chains were studied as a function of laser peak power, pulse duration and repetition rate. A continuous-wave laser and a square pulse laser were simulated and compared to a Gaussian pulse laser. With increasing repetition rate, pulsed laser heating was found to approach continuous-wave laser heating.
Singh, Sachin; Tyagi, Mukti; Seshadri, Geetha; Tyagi, Ajay Kumar; Varshney, Lalit
An effect of gamma radiation on lubrication behavior of graphite -PTFE dry lubrication system has been studied using (TR-TW-30L) tribometer with thrust washer attachment in plane contact. Different compositions of graphite and PTFE were prepared and irradiated by gamma rays. Gamma radiation exposure significantly improves the tribological properties indicated by decrease in coefficient of friction and wear properties of graphite -PTFE dry lubrication system. SEM and XRD analysis confirm the physico-chemical modification of graphite-PTFE on gamma radiation exposure leading to a novel dry lubrication system with good slip and anti friction properties.
Kozbial, Andrew; Li, Zhiting; Iasella, Steven; Taylor, Alexander T.; Morganstein, Brittni; Wang, Yongjin; Sun, Jianing; Zhou, Bo; Randall, Nicholas X.; Liu, Haitao; Li, Lei
Due to its atomic thickness (thinness), the wear of graphene in nanoscale devices or as a protective coating is a serious concern. It is highly desirable to develop effective methods to reduce the wear of graphene. In the current paper, the effect of a nano-lubricant, perfluoropolyether, on the wear of graphene on different substrates is investigated. Graphene was synthesized by chemical vapor deposition (CVD) and characterized by Raman spectroscopy. The nano-lubricant is applied on the graphene by dip-coating. The friction and wear of graphene samples are characterized by nanotribometer, AFM, optical microscopy and Raman spectroscopy. The results showed that lubricating silicon/graphene with nano-lubricant reduces the friction but increases the wear. However, lubricating nickel/graphene with nano-lubricant has little effect on the friction but reduce the wear significantly. The underlying mechanism has been discussed on the basis of the graphene–substrate adhesion and the roughness. The current study provides guidance to the future design of graphene-containing devices. - Highlights: • The effect of a nano-lubricant on the friction and wear of CVD graphene was studied. • Lubricating Graphene/Si results in lower friction but higher wear. • Lubricating Ggraphene/Ni results in lower wear but unchanged friction. • The mechanisms were discussed based on the roughness and interfacial adhesion
Robert S. Bristow; Wen-Tsann Yang; Mei-Tsen Lu
Tourism is an important element of the global economy. Yet for the tourism industry to grow and prosper, there is a need to protect local environmental and social well-being. Sustainable tourism seeks a compromise between growth and protection. Today, health tourism is a multi-billion dollar industry tied to individuals' travel overseas for inexpensive and timely...
Lutz, Glenn A.; Jungk, Manfred; Bryant, Jonathan J.; Lauer, Rebecca S.; Chobot, Anthony; Mayer, Tyler; Palmer, Shane; Kauffman, Robert E.
Industrial gear box lubricants typically are hydrocarbon based mineral oils with considerable amounts of additives to overcome the lack of base fluid properties like wear protection, oxidation stability, load carrying capacity, low temperature solidification and drop of viscosity at higher temperatures. For today's wind turbine gearboxes, the requirements are more severe and synthetic hydrocarbon oils are used to improve on this, but all such hydrocarbon based lubricants require significant amounts of Extreme Pressure (EP) additives to meet performance requirements. Perfluoropolyether (PFPE) fluids provide load carrying capacity as an inherent property. During the course of the project with the main tasks of 'Establish a Benchmark', 'Lubricant Evaluation', 'Full Scale Gearbox Trial' and 'Economic Evaluation', the PAO Reference oil exhibited significant changes after laboratory gear testing, in service operation in the field and full scale gearbox trial. Four hydrocarbon base oils were selected for comparison in the benchmarking exercise and showed variation with respect to meeting the requirements for the laboratory micro-pitting tests, while the PFPE fluid exceeded the requirements even with the material taken after the full scale gear box trial. This is remarkable for a lubricant without EP additives. Laboratory bearing tests performed on the PFPE fluids before and after the full scale gear box trial showed the results met requirements for the industry standard. The PFPE fluid successfully completed the full scale gear box test program which included baseline and progressive staged load testing. The evaluation of gears showed no micro-pitting or objectionable wear. By the final stage, lubricant film thickness had been reduced to just 21% of its original value, this was by design and resulted in a lambda ratio of well below 1. This test design scenario of a low lambda ratio is a very undesirable lubrication condition
Shimizu, Ichiro; Martins, P. A. F.; Bay, Niels
, during upsetting and strip drawing, by means of a rigid-viscoplastic finite-element formulation. Special emphasis is placed on the effect of pocket geometry on the build-up of hydrostatic pressure, which is responsible for the onset of micro-lubrication mechanisms. A good agreement is found between......Micro-lubricant pockets located in the surface of plastically deforming workpieces are recognised to improve the performance of fluid lubrication in a metal-forming process. This work investigates the joint influence of pocket geometry and process working conditions on micro-lubrication mechanisms...
Zhang, Guoliang; Xie, Guoxin; Si, Lina; Wen, Shizhu; Guo, Dan
Smart nanocontainers with stimuli-responsive property can be used to fabricate a new kind of self-lubricating nanocomposite, while the practical potential of the metal-organic frameworks (MOFs) as nanocontainers for lubricants has not been realized. In this work, mesoporous Cu-BTC MOFs storing oleylamine nanocomposites were explored from synthesis and microstructure to self-lubricating characterization. The stress stimuli-responsiveness behavior of the Cu-BTC storing oleylamine (Cu-BTCO) for lubrication has been investigated by subjecting it to macroscopic ball-on-disc friction tests. The steady-state coefficients of friction (COFs) of the Cu-BTC nanocomposites without lubricants were ca. 0.5. In contrast, after oleylamine as the lubricant was incorporated into the Cu-BTC container in the nanocomposite, ultralow friction (COF, ca. 0.03) was achieved. It has been demonstrated that the improved lubricating performance was associated with the lubricating film which was in situ produced by the chemical reaction between the oleylamine released from the nanocontainer and the friction pairs. Therefore, the nanocomposite with smart Cu-BTC container holds the promise of realizing extraordinary self-lubricating properties under stress stimuli.
Management ethics and strategies towards sustainable tourism development in ... embark on tourism because of the huge economic benefits, which it accrues on ... The park was gazzetted in 1972 for the purposes of conservation, education ...
Creativity has become increasingly important for the development of tourism in cities in recent years. As competition between cities grows, they increasingly seek to distinguish themselves through creative strategies. In the field of tourism, however, such strategies may arguably be
Conclusion: Intestine transplantation is reserved for patients with irreversible intestinal failure due to short gut syndrome requiring total paranteral nutrition with no possibility of discontinuation and loss of venous access for patient maintenance. In these patients complications of underlying disease and long-term total parenteral nutrition are present.
... happens after I go home? Once you are home from the hospital, the most important work begins—the follow-up. For your transplant to ... possible. Are there disadvantages to living donation? A ... returning to work and other activities. However, recent advances in surgery ( ...
... Severity of the recipient's lung disease Recipient's overall health Likelihood that the transplant will be successful Immediately before ... will begin within days of your surgery. Your health care team will likely work with you to design an exercise program that's right for you. Your doctor may ...
Hjortdal, Jesper Østergaard
with less risk of rejection episodes. Besides covering updated chapters on penetrating keratoplasty, and anterior and posterior lamellar procedures, this textbook also gives a thorough overview of the history of corneal transplantation and a detailed presentation of the microstructural components...... and to assist fellows and corneal surgeons in their advice and selection of patients for the best surgical procedure considering benefi ts and risks....
A heart transplant removes a damaged or diseased heart and replaces it with a healthy one. The healthy heart comes from a donor who has died. It is the last resort for people with heart failure when all other treatments have failed. The ...
Full Text Available Rural tourism is both old and new phenomenon. The interest for recreation in the countryside began to grow as early as XIX century, as a reaction to the pressure of growing urbanization and industrialization. Serbia has great potentials for development of rural tourism. Natural beauty in combination with culture, tradition, festivals, gastronomic specialties and music, might become recognizable tourist brand, which could contribute to the significant monetary influx and improve the overall image of the country. However, current level of Serbia's competitiveness in the area of rural tourism is not particularly high, regardless of the fact that all of the natural, cultural and social prerequisites for its development already exist (natural potentials, significant farming land, great number of agriculturally active population, traditional approach to agriculture, lack of ground pollution as well as the possibility of producing 'healthy food', good potential for development of complementary activities such as hiking, recreation, hunting, fishing, riding and participating in everyday activities of the country folk, traditional local gastronomical specialties etc.. The goal of this paper is to show the resources of Serbia in the area of rural tourism as well as the possible development potentials of this form of tourism.
Full Text Available The biggest challenge associated with the concept of sustainable tourism is its operationalisation and perception as a process to be applied through development plans, projects and ongoing activities of tour operators. The traditional approach to marketing, focused on a limited idea of maximising profit businesses, was not able to respond to a number of social and environmental requirements imposed by the concept of sustainable development. This paper discusses the ways in which marketing could play a more important role in the sustainable development of tourism. This refers to the determination of consumer needs and preferences, the formation of certain products and pricing, product information and advertising to consumers of their benefits in a sustainable manner, as well as adequate distribution channels used by businesses to deliver products to consumers. Environmental and social marketing are now being confirmed as important elements of a much broader marketing perspective. In order to develop tourism with sustainable outcomes, responsible marketing can be crucial. The concept of marketing mix for sustainable tourism was used as a starting point to explore the specific role of responsible marketing in tourism.
Full Text Available Christopher Taylor1, Nelson Barber2, Cynthia Deale31School of Business, Eastern New Mexico University, Portales, Roosevelt County, NM, USA; 2Whittemore School of Business, University of New Hampshire, Durham, NH, USA; 3Department of Hospitality Management, East Carolina University, Greenville, NC , USAAbstract: Wine tourism marketers frequently seek new ways to promote destinations, often executing ecologically sustainable practices. As consumer environmental knowledge of a wine tourism destination increases, consumer attitudes change, influencing perceptions of the environmental policies of a wine region. In this consumer-driven economy, it is therefore important to search for effective ways to market destinations, and one approach is selective marketing. By focusing on consumers in this manner, it is possible to understand better their concerns and motivations, which should aid in marketing and advertising efforts. This study investigated wine consumers environmental concerns and attitudes about wine regions. Results suggest environmental attitudes differed by demographics regarding the impact of wine tourism, providing ideas on further marketing efforts for those involved in wine tourism.Keywords: sustainable wine tourism, green products, wine marketing, consumers
Full Text Available In the past two decades, companies have been mentioning achievement of sustainability in their activities as a target of companies, governments and non-profit organizations, although measuring the degree to which an organization conducts its activities in a sustainable manner, can be very difficult. Sustainable tourism development requires a process of planning and management that will unite the interests of various stakeholders in a sustainable and strategic way. It requires an understanding of the meaning of sustainable development and guiding values for promoting sustainable tourism. The paper points to the importance of cross-sector partnerships and the roles of different stakeholders in the planning of sustainable tourism projects. Special importance is given to the community of which a willingness to understand the impacts of tourism industry is expected, as well as various procedures of engagement in participatory planning, consensus building and conflict resolution among all stakeholders. The aim of this research is to find an optimal model of planning of sustainable tourism projects that would take into consideration the interests of all stakeholders and reflect the specificities imposed by the acceptance of the concept of sustainable development by all participants in the project.
I Ketut Suarta
Full Text Available This resarch is held in Serangan Village, Denpasar Selatan District, Denpasar Municipility. Purpose of this researchis to identify the potencies of Serangan Island which could be developed as tourism product such as special-interest marine tourism and to know the visitors’ perceptions to the objects and attractions they visit in order to determine the most favorite tourist attraction in Serangan Village.Data of this research was collected by survey, interview, documentation and library study. The data is analyzed by using quantitative analysis (descriptive statisticsand qualitative analysis (descriptive and comparative analysis. The resultsshowed that there are five potencies of natural attractions identified in Serangan Island which could be developed as tourist objects and special-interest marine tourism. They are the white sand beach, seaweed, clean blue sea, coral garden, and mangrove forest. The special interest-marine tourism are surfing, parasailing, waterski, snorkeling, diving, flying fish, underwater seawalker, banana boat, jetski, donat boat, glass bottom boat, horse riding, fishing, fast boat, turtle conservation and coral transplantation. The biggest market segment of those special marine attractions are 95 % Chinese. The foreign visitors that visit Serangan Island about 94.41 %, and the domestic visitors are about 5.59 %. The most favorite marine attractions in Serangan Village is travelling through the quay by fast boat, it is 311,344 people. Then the second and third favorite are turtle conservation and parasailing, they are 18,040 people and 1,890 people. From the capacity ratio, the most favorite attraction is travelling through the quay by fast boat, it is 276.75, the second and third favorites are flying fish and underwater sea walker with ratio 157.50 and 132.38.
Aghayan, Hamid; Yang, Jun; Bordatchev, Evgueni
The performance, efficiency and lifetime of modern combustion engines significantly depend on the quality of the engine lubricants. However, contaminants, such as gasoline, moisture, coolant and wear particles, reduce the life of engine mechanical components and lubricant quality. Therefore, direct and indirect measurements of engine lubricant properties, such as physical-mechanical, electro-magnetic, chemical and optical properties, are intensively utilized in engine condition monitoring systems and sensors developed within the last decade. Such sensors for the measurement of engine lubricant properties can be used to detect a functional limit of the in-use lubricant, increase drain interval and reduce the environmental impact. This paper proposes two new methodologies for the quantitative and qualitative analysis of the presence of contaminants in the engine lubricants. The methodologies are based on optical analysis of the distortion effect when an object image is obtained through a thin random optical medium (e.g. engine lubricant). The novelty of the proposed methodologies is in the introduction of an object with a known periodic shape behind a thin film of the contaminated lubricant. In this case, an acquired image represents a combined lubricant–object optical appearance, where an a priori known periodic structure of the object is distorted by a contaminated lubricant. In the object shape-based optical analysis, several parameters of an acquired optical image, such as the gray scale intensity of lubricant and object, shape width at object and lubricant levels, object relative intensity and width non-uniformity coefficient are newly proposed. Variations in the contaminant concentration and use of different contaminants lead to the changes of these parameters measured on-line. In the statistical optical analysis methodology, statistical auto- and cross-characteristics (e.g. auto- and cross-correlation functions, auto- and cross-spectrums, transfer function
Kumar, Ashok N.
During the twentieth century a great emphasis was placed in understanding and defining the operating regime of oil and grease lubricated components. Major advances have been made through elastohydrodynamic lubrication theory in the quantifying the design life of heavily loaded components such as rolling element bearings and gears. Detailed guidelines for the design of oil and grease lubricated components are widely available and are being applied to the successful design of these components. However similar guidelines for water lubricated components are either not available or not well documented. It is often forgotten that the water was used as a lubricant in several components as far back as 1884 B.C. During the twentieth century the water lubricated components continued to play a major role in some high technology industries such as in the power generation plants. In CANDU nuclear reactors water lubrication of several critical components always occupied a pride place and in most cases the only practical mode of lubrication of several critical components always occupied a pride place and in most cases the only practical mode of lubrication. This paper presents some examples of the major water lubricated components in a CANDU reactors. Major part of the paper is focused on presenting an example of successful operating history of water lubricated bearings used in the HT pumps are presented. Both types of bearings have been qualified by tests for operation under normal as well as under more severe postulated condition of loss-of-coolant-accident (LOCA). These bearings have been designed to operate for the 30 years in the existing CANDU 6 (600 MW) reactors. However for the next generation of CANDU 6 reactors which go into service in the year 2003, the HT pump bearing life has been extended to 40 years. (author)
The planners in tourism businesses and medical institutes, the evaluation criteria and dimensions for Medical Tourism Marketing are determined by experts through expert interviews. The weights and correlations among the dimensions and criteria are determined by Analytic Hierarchy Process (AHP) to construct an evaluating indicator model suitable for Medical Tourism Marketing. By organizing the overall weight of the key success factors in Medical Tourism Marketing, the top five indicators conta...
Filiposki, Oliver; Ackovska, Marija; Petroska Angelovska, Neda; Metodijeski, Dejan
Tourism is a global phenomenon in which different cultures, nations and races intertwines, in order to satisfy the tourist as a content consumer. Tourism sector contributes a lot to the overall world economy, and society. Tourism is the economic division that continually evolves in any national economy, the statistical data represent that 2010-2014 it was developed by over 3% annually. Tourism is also a branch that does not absorb the benefits of the national economy, but it...
Yolanda Pena-Boquete; Diana Pérez-Dacal
Spain has the highest percentage of temporary workers in the European Union, and this problem is even more severe in the Tourism sector. In fact, tourism is well-known for being a source of low-skilled jobs, specifically for showing a higher percentage of fixed-term contracts. However, the tourism employment pattern is characterized by remarkable differences between Spanish regions. On the one hand, this could be related with the fact that each characteristic tourism industry provides a diffe...
By its geographical location, the rural area from Dobrudgea has a diversified tourism potential, provided by the contrasting natural environmental factors, ranging from the oldest to the youngest relief units, natural protected areas, balneary resources and cultural, historical, religious sites, as well as multicultural local customs and traditions of the rural area. This potential can be used under various forms in the rural area: cultural tourism, historical tourism, religious tourism, ecot...
Char-lee Moyle; Brent Moyle; Lisa Ruhanen; Alexandra Bec; Betty Weiler
This study aims to empirically compare the adoption of business sustainability amongst 291 randomly-selected tourism and non-tourism businesses in New South Wales, Australia. Tourism businesses were found to be more committed to environmentally-sustainable practices than other types of businesses with there being a clear correlation with their ability to learn and adapt. This contradicts criticisms in the literature that tourism businesses are slow adopters of sustainability. This study highl...
This study focused on opportunities related to the professional growth of tourism in Indonesia at this time and in the future. The proportion of workers in the tourism sector, including the fourth largest after agriculture, manufacturing and non-manufacturing, tends to grow very fast, because tourists visiting Indonesia will increase sharply in coming years. The purpose of this study is to provide advice to the government, tourism, and educational institutions in Indonesia's tourism industry ...
Bieger, Thomas; Beritelli, Pietro
Marketing Management of sport and tourism does not just mean marketing of touristic sport products. Marketing management of sport and tourism can be divided into marketing of sport activities, events or infrastructure for people outside the location and marketing of tourism through sport activities, events and sport infrastructure. A system approach is introduced to serve as a model for explaining interrelations between the different elements in the sport and tourism context. As such destinat...
Lourenço, Nelson; Jorge, Rosário
Spatial and socio-economic impacts of tourism have been quite significant in some regions, causing changes in the economic structure, stimulating some sectors and displacing others. Tourism creates pressures on different domains—natural resources and environment, the built environment, and hospitality and cultural resources. The tourism infrastructure has impacted on the existing social, economic, and environmental dynamics of Goan society. Some of the tourism-related influences are discu...
Considereda sub-sector of horse raisin units, equestrian tourism is a form of moderntourism very popular among the young people as both an entertainingrecreational and adventure activity and a form of animal therapy in thetreatment and rehabilitation of autistic children; it is also a sub-type ofrural tourism, adventure tourism, or ecological tourism. Equestrian tourismpracticed without management strategies can have both positive and negativeeffects on the environment: it can affect roads by...
Pappas, Nikolaos; Bregoli, Ilenia
Worldwide, tourism is the third largest economic activity in direct earnings after petroleum and automobile industries, and by far the largest one if indirect earnings are also taken into consideration. Taking into account the profound economic impact the tourism and hospitality industries can have on regions and cities around the world, further research in this area is critical.\\ud \\ud Global Dynamics in Travel, Tourism, and Hospitality takes a holistic approach to tourism and hospitality op...
Ile Florența Larisa
Full Text Available Medical tourism is a modern concept, but not a new tourism practice. Even there is still no international consent on the definitions and measurement of this trend, its importance in the development of a tourism destination started to be taken into consideration. In accordance with tourism segment classification depending on journey reasons recommended by World Tourism Organization, one of the main groups is for “medical treatment/health”. Being part of health tourism, medical tourism is often called medical travel because it includes the act of travelling to different countries for medical reasons. An increasing significant element in medical service trade is patient circulation at cross-border level with a view to obtaining necessary health services; this circulation generated a new phenomenon, namely medical tourism. Studying the scientific literature we find new medical tourism trends in connection with globalization and liberalization. The countries that decided to promote this niche tourism are aware of the huge economic benefits brought by this. Analyzing published data by tourism medical organizations associated to indicators of economic development, we find two aspects: the success of a medical tourism destination is influenced by the economical level of the receiving countries, but, at the same time, it is also a growth factor for developing economies if it is included in their national strategy. We intend to find the answer of several questions: trends in medical tourism development are involving only medical service trade, or a combination of specific activities of many sectors? Is the medical tourism acting in favor of developing economies? This study aims to notice the development trends of the medical tourism based on the published figures and on the experience of major destinations and to highlight the importance of the medical tourism for the developing economies.
Tisdell, Clement A.
Different economic methods are being used to estimate the economic benefits generated by nature (wildlife) tourism. The most prominent of these are economic valuation analysis and economic impact analysis. These methods often provide divergent and conflicting estimates of the economic benefits obtained from wildlife tourism, as is demonstrated in this article by the use of a microeconomic model. Tourism Research Australia has estimated the economic benefits to Australia of nature tourism base...
Alberta Tahiri; Idriz Kovaci
Tourism is a phenomenon that has seen a rapid multi fold increase and growth since the middle of the twentieth century. For host communities and countries, the development of tourism has offered numerous advantages, as well as some significant challenges and difficulties. In recent decades, the awareness has been strengthened that tourism needs to be developed following the sustainable development concept. This approach eliminates or significantly decreases the negative impacts of tourism gro...
Miedzińska, Magdalena; Tanaś, Sławoj
The aim of the article is to draw the reader's attention to the tourism attractiveness of renowned Polish libraries. These have attained a tourism function due to tourism exploration and penetration, but remain in the shadow of other Polish cultural assets. The article outlines the historical geography of Polish libraries, an analysis of tourism assets and an attempt to classify and catalogue libraries in Poland.
Cros, Hilary du
Recent research on achieving sustainable heritage tourism in Macau advocates a greater collaboration between tourism and heritage management authorities and the local community on reaching sustainable tourism goals. A key theme for Macau in the last ten years has been how the tension between the proponents for greater casino development versus those for cultural heritage product development has played out in government policies for heritage management, private sector tourism development and h...
Ștefan-Dragoș CÎRSTEA; Andreea CÎRSTEA
Tourism is a sector with a significant share in the economies of many countries. There are nations whose GDP consists of 40% of the total contribution of tourism to this indicator. One such segment requires permanent research of its economic, social and sustainability dimensions and their importance. This study outlines an overview of the main aspects related to economic and social importance of tourism and how tourism relates to the concept of sustainable development. The total contribution ...
By its geographical location, the rural area from Dobrudgea has a diversified tourism potential, provided by the contrasting natural environmental factors, ranging from the oldest to the youngest relief units, natural protected areas, balneary resources and cultural, historical, religious sites, as well as multicultural local customs and traditions of the rural area. This potential can be used under various forms in the rural area: cultural tourism, historical tourism, religious tourism, ecot...
The aim of this paper is to examine contemporary moral controversies about hunting tourism in Serbia in the context of defined value orientations and norms of ethics of hunting tourism, as a branch of applied ethics. On the one hand, this paper summarizes conceptual definitions and specificities of hunting tourism, as a special form of tourism, and the crucial value postulates derived from the assumptions of the concept of sustainable development and biodiv...
Over the past six decades, tourism has experienced continued growth and diversification to become one of the largest and fastest growing economic sectors in the world. Over time, more and more destinations have opened up and invested in tourism development, turning modern tourism into a key driver for socioeconomic progress.According to the European Union’s Statistic Office, the global economic crisis has affected the tourism in Romania.The purpose of this research is to evaluate the economic...
In 2015 the scenario of global tourism has radically changed. The new scenario has shifted from the approach of the foregoing “closed-circuit” international tourism flows and the creation of different development centres of the tourism economy in the world taking over the global business that was previously in the hands of Europe and North America. The globalisation of tourism is unavoidable and, in many respects, positive. The creation of new tourist destinations and new countries generating...
Manhas, Parikshat Singh; Ramjit, Monu
The aim of the present research is to carry out the marketing analysis and to determine the potential of the medical tourism, to identify the various challenges to the medical tourism in India and to suggest and recommend the marketing strategies to develop the India as the medical tourism destination. The research is primarily based on the secondary sources by searching the various potential academic journals and reports potential articles, with medical tourism in the title...
Shimizu, I; Martins, P.A.F.; Bay, Niels
mechanisms, during upsetting and strip drawing, by means of a rigid viscoplastic finite element formulation. Special emphasis is placed on the effect of pocket geometry on the build up of hydrostatic pressure, which is responsible for the onset of micro lubrication mechanisms. A good agreement is found...... between the numerically predicted and the experimentally measured distributions of hydrostatic stress....
Full Text Available The micropolar lubricated symmetric/asymmetric hole-entry bearings using capillary restrictor have been analyzed in the present work. Reynolds equation for micropolar lubricant has been derived and solved by FEM. The results have been computed using selected parameters of micropolar lubricant for hole-entry hydrostatic/hybrid journal bearings. A significant increase in damping and stiffness coefficients is observed for bearings having micropolar parameter N2=0.9, lm=10 than similar bearings under Newtonian lubricant. The threshold speed gets increased when symmetric bearing lubricated under micropolar fluid than Newtonian lubricant. The threshold speed gets increased when symmetric bearing lubricated under micropolar fluid than Newtonian lubricant.
National Aeronautics and Space Administration — NASA needs an advanced lubrication solution for its future robotic systems and planetary surface assets. The required lubrication technology must offer...
Simon Chiutsi; Boycen Kumira Mudzengi
Zimbabwe tourism development has suffered the pitfalls of uneven development often producing disproportionate distribution of returns. While tourism has been promulgated as a panacea to the socio-economic development challenges Zimbabwe is facing, local and often marginalized rural communities have not meaningfully reaped the benefits through tourism income. In this paper community tourism entrepreneurship is suggested as a viable option to promote sustainable tourism as it places the local c...
Frenzel, F.; Koens, K.
This paper introduces the Special Issue on slum tourism with a reflection on the state of the art on this new area of tourism research. After a review of the literature we discuss the breadth of research that was presented at the conference 'Destination Slum', the first international conference on slum tourism. Identifying various dimensions, as well as similarities and differences, in slum tourism in different parts of the world, we contest that slum tourism has evolved from being practised ...