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The effectiveness of an oil filter and of the method in which it is employed is judged by the level of lubricating quality it maintains in the bearings and other sliding parts of the engine. The word “quality” here includes freedom from dirt (particularly from those dirt particles which, by their size and composition, are likely to cause abrasive wear) and the presence in sufficient quantity of those additives which the modern refiner incorporates in Heavy Duty oils to reduce oxidation, piston‐ring sticking and other ills.

The authors explore how service workers negotiate emotional laboring with “dirty” emotions while trying to meet the demands of neoliberal healthcare. In doing so, the authors theorize emotional labor in the context of healthcare as a type of embodied and emotional “dirty” work.

The authors apply interpretative phenomenological analysis (IPA) to their data collected from National Health Service (NHS) workers in the United Kingdom (UK).

The authors’ data show that healthcare service workers absorb, contain and quarantine emotional “dirt”, thereby protecting their organization at a cost to their own well-being. Workers also perform embodied practices to try to absolve themselves of their “dirty” labor.

The authors extend research on emotional “dirty” work and theorize that emotional labor can also be conceptualized as “dirty” work. Further, the authors show that emotionally laboring with “dirty” emotions is an embodied phenomenon, which involves workers absorbing and containing patients' emotional “dirt” to protect the institution (at the expense of their well-being).

The purpose of this paper is to contrasts the ways in which first and later generation Australian-Hungarians respond to dirt and decay in the physical environment of Hungary during their journeys there. Given the growing trend of diaspora tourism, it is now more important than ever to consider tourism at the level of tourist subjectivity.

The material stems from multi-sited ethnographic research in two distinct periods.

In particular, the paper argues that, while the first generation relies on images internalized in the diaspora and the youngsters rely heavily on a popular Western backpacker discourse, they both share an orientalistic view of Hungary.

This paper aims to energize greater discussion about, and debate over, the connectivity between diasporas and tourism. In attempting to merge the two disciplines, the meta-narratives that have influenced the different generations’ perceptions are analyzed.

The purpose of this paper is to detail how the ethnographic approach can be usefully adopted in the context of researching dirty or undesirable work. Drawing on a study of refuse collectors, it shows how ethnography can enable a fuller social articulation of the experiences and meanings of a social group where conventional narrative disclosure and linguistic expression may be insufficient.

Viewing ethnography as no one particular method, but rather a style of research that is distinguished by its objectives to understand the social meanings and activities of people in a given “field” or setting, this paper highlights aspects of reproductive and “dirty” work which may be hidden or difficult to reveal. Combining the methods of participant observation, photographic representation and interviews, we add to an understanding of dirty work and how it is encountered. We draw on Willis and Trondman's (2002) three distinguishing characteristics namely, recognition of theory, centrality of culture and critical focus to highlight some meanings men give to their work.

By incorporating these issues of theory, culture and reflexivity throughout the research process, this paper highlights how Willis and Trondman's (2002) approach aids the ethnographic objective and is crucial to the understanding of representation and experience.

As such, the value of this paper can be understood in terms of developing a further understanding of dirty work, which incorporates an ethnographic process and interpretation, to achieve “rich data” on the dirty work experience.

Pyrolysis means to heat a material up to high temperatures at which its molecular structure is thermally cracked. The residues of the heated material are gases and ashes. In modern consumer ovens this method is used to clean the walls of the oven cavity. The cavity is heated up to about 480°C. At this temperature the dirt sticking on the walls is thermally cracked into gases and ashes. The approach of the system described in this paper is to estimate the quantity of dirt to be pyrolysed in the cavity. This is done by using a gas sensor. The sensor measures the concentration of the gaseous residues in the exhaust air of the oven. Evaluation of the sensor signal makes it possible to minimise the energy consumption during the process. Furthermore, the sensor can be used as a safety device.

An autonomous mobile robot requires efficient perception of the environment to perform various tasks in a challenging environment. The precise sensory information from the range sensors is required to accomplish prerequisites, such as SLAM, path planning and localization. But the accuracy and precision of the sensors become unreliable in harsh environmental conditions because of the effect of rain, dust, humidity, fog and smoke. The purpose of this paper is to generate robust mapping of the environment in harsh environmental conditions.

This paper presents a novel technique, averaging data with short range selection (ADWSRS), to reduce the effect of harsh environmental (rain, wind, humidity, etc.) conditions on sensory information (range) to generate reliable grid mapping. The sensory information on laser and sonar sensors in terms of probability values (occupied/unoccupied cell) in generating grid maps are fused after passing through two newly designed pre-processing filters: laser averaging filter and short range selection filter. This proposed approach relies on various aspects such as averaging laser data analogous to current pose of the sensor, selection of short range with respect to threshold value to remove the effect of specular reflection/crosstalk of sonar and a newly designed apparatus in which dirt cover (glass cover) and air blower are coupled to remove the influence of dirt, rain and humidity.

This proposed approach is tested in different environmental conditions, and to verify the consistency of the proposed approach, qualitative and quantitative analyses are carried out, which shows 42.5 per cent improvement in the probability value of occupied cells in the generated grid map.

The proposed ADWSRS approach reduced the effect of harsh environmental conditions such as fog, rain and smoke to generate efficient mapping of the environment, which may be implemented in diverse applications such as autonomous navigation, localization, path planning and mapping.

An earthworm moves by peristaltic crawling which brings a large surface into contact during motions and requires less space than other mechanisms. A peristaltic crawling is suitable for moving in excavated space by an anterior (front) of a robot. Therefore, a peristaltic crawling robot is useful for an underground explorer. The purpose of this paper is to develop a peristaltic crawling robot with several parallel links and compare with motion of an actual earthworm. Then we had some experiments on a plane surface and in a tube, and in vertical perforated dirt.

The proposed robot, which consists of several parallel mechanisms, has four units for being controlled in 3‐DOF. A unit expands in a radial direction when it contracts to increase the friction between the unit and surroundings. Dustproof covering is attached for preventing dirt from getting inside units. Locomotion mechanism is as the same as an actual earthworm's peristaltic crawling. The robot makes an anterior unit contract, and then the contraction propagates towards the posterior (rear). Therefore, it requires no more space than that of an excavation part on the front of the robot.

It was found that three units of robot consists of several parallel mechanisms had wide range of manipulation; four units of robot moves with peristaltic crawling compared with motion of an actual earthworm. It was confirmed that the robot could turn on a plane surface and move upward and downward in a vertical pipe. Finally, the robot could move in vertical perforated dirt faster than in a pipe.

The robot is designed with several parallel links and equipped with dustproof covering. The locomotion of an actual earthworm is videotaped and analysed for comparing with the analysed movements of the robot. It was confirmed the robot could move with peristaltic crawling and turn on a plane surface. In addition, it was confirmed that some experiments were done in a narrow pipe and in vertical perforated dirt.

Discusses the causes and problems of dirt infiltration into pipework used in mechanical buildings services systems. Describes what actually constitutes this ′dirt′ and explains how the systems are cleaned. Assesses the implications of incorrect cleaning and suggests that shortcuts in the procedure are causing many of the problems.

At a meeting of the Hull Corporation Health Committee, on November 22nd, the Town Clerk referred to the decision in the recent case of milk, alleged to have contained dirt. Originally the justices dismissed the summons on a legal point. The Corporation, prosecuting, asked for a case to be stated in the High Court, and the latter decided in the Corporation's favour, and sent the case back to the Hull magistrates to be heard on its merits. The evidence of the prosecution was that the milk contained 3·9 parts of dirt per 100,000 parts of milk, the far greater part of the sediment present consisting of manure. In previous cases prosecutions were secured where the dirt was slightly less, but this summons was dismissed on the ground that there was no standard laid down by law as to what amount of dirt might be permitted. If this was a reason for dismissal, then milk might be half dirt. That was absurd. The question was “What was the Corporation going to do?” He suggested that they should go on exactly as they were doing, take the cases, and place the responsibility on the justices. Perhaps if they went on a little longer they would get some idea at to what the Bench considered was such a state of contamination as to justify the local authority in taking action.

Purpose – Building on the work of Wenner (2011) and Messner and Montez de Oca (2005), this study provides an updated critical stocktaking of the narrative tendencies in sport-related alcohol advertising on television. Set in contemporary understandings of a ‘crisis of masculinity’ and in the political economy of the alcohol industry, this study anchors a critical reading of masculinity, the sporting context and alcohol advertising in Wenner's (2007, 2013) ‘dirt theory of narrative ethics’.

Design/methodology/approach – Our theoretical and methodological approach is grounded in a dirt theory of narrative ethics. Set at the intersection of reader-oriented literary theory (Iser, 1978) and ethical criticism (Gregory, 1998), we ‘follow the dirt’ to understand how contagion from imported communicative meanings (McCracken, 1990) exerts power (Leach, 1976) by influencing reading and interpretation. We draw upon a diverse sample of 20 television ads representing a balanced cross-section of sport-dirtied beer commercials produced between 2010 and 2019. To balance this sample, we divided the ads by their opposing tendencies to characterize men as either ‘real men’, drawn in mythical masculinity terms, or ‘himbos’, drawn as ‘losers’ or slackers. To address the dominance of Anheuser-Busch InBev (ABI) in the American market, we further divided our ‘real men’ and ‘himbo’ samples, contrasting five ads produced for ABI brands with five ads produced for beer brands not held by ABI.

Findings – We contend that contemporary sports-dirtied beer ads combine to form a schizophrenic picture of American manhood. Male sports fans are alternatively hailed through mocking and misandry, through playfully saluting the norms of ‘bro culture’, and through encouraging men to understand themselves as proud keepers of tradition. We critically consider the ethical implications of building brand affinities through staking disparate positions in contemporary cultural and political debates about the place of men and masculinity in contemporary society.

Research limitations/implications – We discuss the difficulties involved in holding advertisers accountable for balancing ethical and market demands. Nevertheless, we call on the industry to engage in a more reflexive and responsible approach to crafting sports-dirtied alcohol advertising.