bluuebunny/crossref_metadata_2025_split huggingface dataset:
FEM analysis for different configurations of non‐recessed hole‐entry hybrid journal bearings for non‐Newtonian lubricants
Authors: Duvedi R.K. , Singh Manpreet , Jadon V.K. 
Published: September 2007

PurposeThe present work aims to predict accurately the bearing design data for non‐recessed hybrid journal bearings, considering the effect of non‐Newtonian behavior of lubricant for different symmetric and non‐symmetric bearing geometric configurations.Design/methodology/approachThe simultaneous solution of generalized Reynold's equation governing the laminar flow of incompressible lubricant and the equation of flow of lubricant through the capillary restrictor, considering variable viscosity of lubricant following the “Power law”, has been carried out using FEM. For a given set of bearing geometric, operating parameters and for given external vertical load, the values of various performance characteristics have been obtained for a range of values of power law index, after establishing the journal center equilibrium position, the analysis for which has been elaborately explained.FindingsThe results obtained have been presented graphically for various bearing performance characteristics. It has been observed that with decrease in power law index “n”(0<n≤1), the value of h¯min  and load carrying capacity decreases, while bearing flow rate increases for all configuration. The load‐carrying capacity of asymmetric configurations is better and stable over entire range of restrictor design parameter. Bearing configuration with land width ratio = 0.25 and aspect ratio = 1.0, having two rows of holes and six holes in each row, will be better suited for high‐load support, as it has maximum value of minimum fluid film thickness, moderate value of bearing flow and value of attitude angle is almost constant.Originality/valueThe performance characteristics of journal bearing have been presented for a wide range of values of power law index and for different values of restrictor design parameter for capillary restrictor, after establishing the journal center equilibrium position. The comparison of the different symmetric and non‐symmetric journal‐bearing configurations to find the best geometric configuration at different operating conditions, considering the effect of non‐Newtonian behavior of lubricant, represents the originality of the work.
Study on the effect of jet flow parameters with water vapor as coolants and lubricants in green cutting
Authors: Junyan Liu , Rongdi Han , Li Zhang 
Published: September 2007

PurposeAt the present time, green cutting has become the focus of attention in ecological and environmental protection. Water vapor is cheap, pollution‐free and eco‐friendly. Therefore, it is a good and economical coolant and lubricant. To find the discipline of nozzle diameter, the parameters of water vapor jet flow and cooling distance influence on its lubricating action effect, experiments were carried out in which YT15 (P10 type in ISO) tool was used in cutting C45 steel.Design/methodology/approachThe vapor generator and vapor feed system are manufactured. The temperature and velocity distribution of water vapor jet flow influences the velocity such that water vapor fills up the capillaries and forms the boundary lubricating film layer in the cutting zone, and the temperature and velocity distribution of the vapor jet flow section contains the effective area for the lubricating effect. Through the temperature distribution measured, the empirical formula of temperature distribution is obtained and simulated by Matlab. The turning experiment was carried out according to quantity in cutting υc=45, 60, 75, 90, 105, 120 mm/min, f=0.1 ∼ 0.3 mm/rev, ap=1, 2, 3, 3.5 mm and the jet flow parameters were changed, respectively.FindingsIt was found that: significant decrease of cutting force can be realized with reduced nozzle diameter, increased the sett pressure and shortened the cooling distance. However, reduced to a certain extent it will lead to the increase of the cutting force. The optimal nozzle diameter is 2 mm for the best lubricating effect. The effect on cutting force of the cooling distance is much better than the setting pressure. Significant decrease of friction coefficient of tool‐chip can be realized with reduced nozzle diameter. However, reduced to a certain extent it will lead to the increase of friction coefficient. Significant thinness of chips can be realized by reducing nozzle diameter. But if the diameter is reduced to a certain degree, chips will be thickened. Increased set pressure and shortened cooling distance can both reduce chip thickness, resulting in reduction of chip deformation coefficient. Since water vapor has the advantage of being cheap, pollution‐free and harmless, and there is no need for disposal and recycling, it is ideal for cooling and lubricating technology in green cutting.Originality/valueThe paper establishes the discipline of nozzle diameter, the parameters of water vapor jet flow and cooling distance influence on its lubricating action effect.
Effects of couple stresses and surface roughness on the film thickness of heavily loaded rollers
Authors: Raghavendra Rao R. , Raja Sekhar K. 
Published: September 2007

PurposeThis paper aims to study the effects of couple stresses and surface roughness on the minimum film thickness of heavily loaded rollers and to discuss these by following Grubin's approach and Crook's approximations.Design/methodology/approachA generalised form of Reynolds equation for rough surfaces with lubricant as couple stress fluid is derived. This equation is then used to study the combined effect of couple stresses and surface roughness on the roller bearings under heavily loaded conditions. EHD minimum film thickness expressions is obtained by following Grubin's approach and Crook's approximation and it is studied numerically.FindingsIt is found that, as the chain length of the additive molecules increases, the elastohydrodynamic minimum film thickness increases. Also, as the mean height of roughness asperities increases, the elastohydrodynamic minimum film thickness increases for the transversal roughness and it decreases in the case of longitudinal roughness.Research limitations/implicationsThese effects are studied theoretically by the mathematical equations in heavily loaded roller bearings.Practical implicationsReduction of the film thickness in the EHD lubrication between the rollers can be compensated by the use of lubricants containing additives of molecules of size. As a result the bearing performance can be improved.Originality/valueThis research paper provides a closed form of the expressions for the bearings in EHD lubrication and is studied with regard to couple stress parameter. This paper helps to manufacture better bearings.
Condition monitoring of low‐speed and heavily loaded rolling element bearing
Authors: Liu Rende 
Published: September 2007

PurposeThis paper sets out to develop a reliable analysis method based upon a low‐cost procedure to monitor the wear condition of low‐speed and heavily loaded rolling element bearing.Design/methodology/approachSpecial solvents for grease are invented and new test methods, including spectroscopy and ferrography of used grease, are developed to monitor the wear condition of a deferred bearing of ladle turret in continuous casting.FindingsAccording to the analytical results, the service life of the ladle turret bearing in No. 1 continuous casting machine is extended to 14 years and significant expense is saved, which proved that it is feasible for grease analysis to be used in the condition monitoring of low speed and heavily loaded rolling element bearing, especially those deferrable bearings.Research limitations/implicationsThe fault mechanism of the huge bearing is not estimated.Practical implicationsOne useful analysis method to monitor the wear condition of low speed and heavily loaded rolling element bearing is reported, and it can be used in other industrial fields.Originality/valueThis paper provides a way of studying condition monitoring of low‐speed and heavily loaded rolling element bearings.
Organizational anomie as moderator of the relationship between an unfavorable attitudinal environment and citizenship behavior (OCB)
Authors: Zoghbi Manrique de Lara Pablo , Espino Rodríguez Tomás F. 
Published: September 2007

PurposeThe purpose of this paper is to examine the relationship between an unfavorable attitudinal environment and organizational citizenship behavior (OCB). The proposed model suggests that organizational anomie (OA) acts as a moderator of that link, and thus OA interacts with unfavorable attitudes and OCB by tightening their theoretical negative association.Design/methodology/approachData were collected from 154 of the 758 non‐teaching staff at a Spanish public university. Accessibility of individual e‐mail accounts was similar for all employees. E‐mails asking for collaboration were sent in two phases. A questionnaire was posted on the university intranet and could be accessed by clicking on a link in the e‐mails.FindingsMultiple hierarchical regression results support the moderating role of OA of the unfavorable attitude‐OCB link because the unfavorable attitudes toward co‐workers and toward the boss as‐a‐person among employees with low, compared with high OA, have a stronger negative relationship with OCB. OA moderation existed, but to varying degrees, between attitude toward one's job and some dimensions of OCB (OCBI, and OCBI client). OA also intensified the unpredicted positive relationship between attitude toward boss's performance and OCB. No moderating influences were observed in the case of attitudes toward oneself and toward clients (students).Research limitations/implicationsThe researched employees have job conditions inherent to the peculiarities of the public sector which may limit the ability to extrapolate the findings in the private sector. Findings provide a more understandable mechanism of the influence of attitudes on OCB. The research may aid OA acceptance into organizations, providing an explicit justification for the OA distinctiveness with other variables in the existing OB literature.Practical implicationsThe findings contribute to a better understanding of the attitudes‐OCB link, and the ways to favor OCB through OA.Originality/valueThe use of OA as a moderator on this link is unprecedented.
Organizational commitment to employees and organizational performance
Authors: Roca‐Puig Vicente , Beltrán‐Martín Inmaculada , Escrig‐Tena Ana B. , Carlos Bou‐Llusar J. 
Published: September 2007

PurposeThe purpose of this paper is to examine the effect of organizational commitment to employees (OCE) on organizational performance through two different approaches – a configurative approach and a universalistic approach. The theoretical model formulated in this paper integrates both propositions with the aim of analyzing which has the most relevant impact on organizational performance.Design/methodology/approachStructural equation models were applied to test these propositions by means of a survey of a random sample of 230 service firms.FindingsIt was found that the configurational hypothesis is more important than the universalist hypothesis.Research limitations/implicationsThe study only included information from one member of executive management staff. This study is an initial attempt in the strategic human resource management literature to examine the configurative perspective as a covariation pattern.Practical implicationsOCE by itself does not affect organizational performance. It is necessary to consider the context in which it is applied in order to understand the effect of OCE on performance. This explains why not all employers pursue an OCE model.Originality/valueIt is proved that “fit as covariation” can be adequate for studying the configurative theory. A complementary vision of the configurative and universalistic hypotheses was adopted, according to which these two hypotheses are not contradictory and could be tested simultaneously.
Attitude towards E‐HRM: an empirical study at Philips
Authors: Voermans M. , van Veldhoven M. 
Published: September 2007

PurposeThe purpose of this paper is to present a research project on attitude towards electronic human resource management (E‐HRM). A research model was formulated, based on two theories from complementary research areas: Davis' technology acceptance model and Ulrich's model on HR roles.Design/methodology/approachThe study used an online questionnaire, in which 99 managers and 257 employees within Philips (Electronics) Netherlands participated. Managers and employees answered questions as to their previous experiences with regard to IT systems in general, their preferred HR roles, and their attitude towards E‐HRM systems.FindingsDifferences in perceived usability of current IT systems, as well as the preferred HR roles strategic partner (high preference) and employee champion (low preference), were related to a positive attitude towards E‐HRM systems. For managers, user support was also found to be a predictor of a positive attitude towards E‐HRM.Originality/valueThis research suggests a multi‐factorial framework that can help organizations in understanding and solving difficulties of implementation with E‐HRM systems, as far as attitude towards these systems is concerned.
Understanding acceptance of multisource feedback for management development
Authors: McCarthy Alma M. , Garavan Thomas N. 
Published: September 2007

PurposeThe purpose of this paper is to report a study investigating the predictors of acceptance of multisource feedback (MSF) by managers. Specifically, it investigates the extent to which locus of control, cynicism and perceptions of procedural justice predicted acceptance by feedback recipients.Design/methodology/approachQuantitative data were analysed from 520 questionnaires completed by managers who participated in a multisource feedback programme as part of a leadership development process.FindingsThe study findings reveal that managers' perception of procedural justice was most significant in explaining variance in acceptance of MSF. Cynicism also explained significant variance in acceptance.Practical implicationsThe findings highlight the importance of attending to procedural justice issues when implementing MSF. They also highlight the need to assess cynicism levels in the organisation.Originality/valueThe study combines variables not included in previous studies.
HRM and TQM: association with job involvement
Authors: Keng Boon Ooi , Arumugam Veeri , Samaun Safa Mohammad , Abu Bakar Nooh 
Published: September 2007

PurposeThe purpose of this paper is to examine the perceptions of individual employees on the influence of eight elements of HRM/TQM (i.e. leadership, training and development, employee participation, reward and recognition, customer focus, empowerment, teamwork, and communication) on employees' job involvement in six major Malaysian semiconductor contract manufacturing organizations. Despite extensive research and voluminous literature on HRM/TQM, very little empirical research has examined this scope of investigative study. Therefore, the hypotheses are developed with the intention of examining this relationship.Design/methodology/approachOriginal researches using self‐completed questionnaires, distributed to employees within these organizations, are thoroughly reported. The study sample consisted of 377 employees, resulting in a response rate of 75.4 percent. A questionnaire developed by Kanungo was used for ascertaining the level of overall job involvement. Data were analyzed by employing correlation and multiple regression analysis.FindingsThe results of this study revealed that teamwork, empowerment, customer focus, reward and recognition and communication are positively associated with employees' job involvement. Where empowerment was found to be a dominant practice, strong associations with employees' job involvement existed. Originality/value – This study contributes in advancing the HRM/TQM research literature to a better understanding of the association between HRM/TQM and employees' job involvement within the context of the Malaysian semiconductor sector.
Sectoral collective agreements: remuneration straitjackets for German workplaces?
Authors: Allen Matthew M.C. , Tüselmann Heinz‐Josef , El‐Sa'id Hamed , Windrum Paul 
Published: September 2007

PurposeThis paper aims to map some of the diversity in employee relations in Germany that is overlooked, first, within assessments of the German labour market that focus on the national level and second, within separate studies in this area that emphasize attempts by employers to circumvent important institutions.Design/methodology/approachThe research adopts a quantitative approach to examine data for German manufacturing and service sectors on both the spread of industry‐wide collective agreements and the extent to which workers are paid wage rates that are higher than those set out in those agreements. It also assesses the prevalence of profit sharing and employee share ownership schemes.FindingsIndustry‐wide collective agreements are not the burden that they are often portrayed. Actual wage rates and the prevalence of profit sharing and ESOSs make German workplaces more heterogeneous than critics and advocates of the German economic model posit.Research limitations/implicationsThe data are limited to Germany; however, Germany occupies a prominent position, not just within much of the employment relations literature, but also in terms of economic output. The research is also limited by an inability to provide evidence on workplaces that undercut sectoral collective agreements and to disaggregate the data further by sector and firm size/location.Originality/valueThe paper provides a counterpoint to the portrayals of employee relations in Germany that often present a homogeneous picture of those relations. For the first time, data on the spread of profit sharing and employee share ownership schemes in German workplaces at the sectoral level are provided.
Moving beyond Schein's typology: individual career anchors in the context of Nigeria
Authors: Ituma Afam , Simpson Ruth 
Published: September 2007

PurposeDrawing on institutional theory, this study sets out to explore the career anchors that exist among information technology (IT) workers in Nigeria and also to establish the strongest anchors in this context.Design/methodology/approachThis research adopted a two‐pronged methodological approach, which involved the use of 30 semi‐structured interviews and a 336‐question survey.FindingsResults suggest the continued significance of traditional orientations to careers in Nigeria as well as orientations associated with new career theory.Research limitations/implicationsThe extent to which the findings of this research can be generalised is constrained by the selected context of the research.Practical implicationsHuman resources managers in Nigeria should be cautious of adopting career management models developed in the West. They should provide a reward system, which minimises financial uncertainty and risk.Originality/valueThis paper provides valuable insights on the career anchors of IT workers in a relatively neglected region in the literature. It also extends Schein's original career anchor theory.
Return‐based investment strategies in the New Zealand stock market: momentum wins
Authors: Gunasekarage Abeyratna , Wan Kot Hung 
Published: September 2007

PurposeThe purpose of this paper is to examine the profitability of return‐based investment strategies in the New Zealand stock market; 16 such strategies are examined for the period from January 1995 to December 2004.Design/methodology/approachThe paper shows that, at the end of each month of the sample period, every security is ranked in ascending order using their past J‐month formation period cumulative return (J=3, 6, 9 and 12). Then these securities are allocated to three groups; group 1 represents the loser portfolio, while group 3 represents the winner portfolio. Finally, equally weighted average returns of winner and loser portfolios are calculated over the next K‐month holding period (K=3, 6, 9, and 12). The statistical significance of the returns earned from buying winners and shorting losers is tested in order to determine the profitability of proposed strategies.FindingsThe findings in this paper show that a strong momentum effect, rather than a reversal effect, is present in this market. For example, the strategy, which is based on a six‐month portfolio formation period and a six‐month holding period, generates a monthly return of 1.14 per cent. These strategies are most profitable when they are based on formation and holding periods of three‐to‐six months. Further analyses reveal that the profits generated by such investment strategies cannot be explained by either the small firm effect or the January effect.Originality/valueThe main implication of this paper shows that buying past winners and selling past losers is profitable in the short to medium run in New Zealand.
Time budget pressure, auditors' personality type, and the incidence of reduced audit quality practices
Authors: Gundry Leanne C. , Liyanarachchi Gregory A. 
Published: September 2007

PurposeThis paper aims to extend the literature on reduced audit quality practices (RAQPs) by examining the relationship between time budget pressure, auditors' personality types, and the incidence of two RAQPs – premature sign‐off of an audit step (PSO) and accepting a weak client explanation (WCE).Design/methodology/approachThe aim of this paper is to collect data. A research instrument was developed and administered to audit practitioners in New Zealand using postal and web link methods. The research instrument included several hypothetical audit scenarios and Blumenthal's Type A Self‐Rating Inventory Scale (TASRI).FindingsThe paper finds that a significant relationship is present between time budget pressure and PSO only. Significant relationships are also found among auditors' personality types and the incidence of the two RAQPs. These results suggest that the audit environment is complex and that time budget pressure is only one of several explanations for the incidence of RAQPs.Research limitations/implicationsThe research instrument of this paper has not been used before in its entirety. This may raise issues of validity of the findings. Also, defining and measuring time budget pressure in terms of two categories (high/low) as opposed to a continuum may have implications on results reported in this study.Originality/valueThe paper provides results that show the importance of auditors' personality type in understanding more about the incidence of RAQPs.