Polymerisation of Light Cured Resin Cements

Polymerisation of Light Cured Resin Cements Discussion (3000-4000 words) Resin-based composite cements are widely and commonly utilised for the cementation of all-ceramic restorations to the prepared tooth structure because clinical studies have identified that using resin cements for this purpose enables the all-ceramic restorations to have an increased fracture resistance in service and thereby improved clinical performance (Kilinc and others). However, this purpose is only fulfilled optimally if the light-cured resin cement is adequately cured to achieve a sufficient degree of polymerisation. In order to initiate the curing reaction, light energy of an appropriate intensity and wavelength must activate and excite a sufficient number of photoinitiators in order to generate an adequate quantity of free radicals. The generated free radicals can then interact with the C=C bonds within the resin monomer and initiate the polymerisation reaction which results in the formation of a polymer (Dias et al, 2008). An adequate cure would consequently determine the s trength of the reinforcement that is achieved via the application of a resin cement to the ceramic specimens. Light transmission Talk about LT at different distances. Increasing the distance decreases both LT and DC. Lack of light can be overcome by increasing light intensity or increasing exposure time In this study, light-cured resin cement was utilised and adequate LT of restorations is even more pivotal for the for the polymerisation of these light cured resin cements because all these cements can utilise is the light that is transmitted through the restoration, or in the case of this study, the ceramic disc (Kilinc and others). The presence of a ceramic disc also restricts the transmission of light to the resin cement as according to Strang et al, a ceramic is capable of absorbing between 40-50% of the curing light (Passos et al, 2013). In this study, light cured resin cement The light transmission in this study was proved to be affected by the thickness and opacity of the ceramic disc as well as the distance from the curing tip. The translucency of a ceramic depends on its crystalline structure, light refractive indexes and the thickness of the ceramic (Kilinc and others). An opaque material may be ideal for aesthetically demanding clinical situations but opacity has been shown to affect light transmission as well as the polymerisation of the resin cement. It is clear from the results in this study that increasing the thickness or opacity of the ceramic disc decreases light penetration through the disc (Duran et al, 2012). A ceramic disc of increasing thickness or opacity would allow lower light energy to be transmitted through it and resultantly, lower LT. An opaque ceramic contains a higher percentage of chroma and this chroma pigment has the ability to absorb light, therefore less light is transmitted through the ceramic and consequently, negatively influencing the polymerisation of the resin cement (Passos et al, 2013). The results also highlighted the fact that the polymerisation was adversely affected with increasing thickness or opacity of ceramic specimens. The presence of a ceramic disc would influence light attenuation and therefore decrease the number of photoinitiators that are activated in the resin cement. The consequence is a lower DC (Filho et al, 2010). Most clinicians implement a curing regime of 400mW/cm2 for 40 seconds and this is thought to be generally enough for adequate polymerisation when applied directly on the ceramic restoration. The ISO recommend a curing light intensity of 300mW/cm2 and the depth of polymerisation should be no greater than 1.5mm. In this study, the curing time used was 30 seconds at an intensity of 800mW/cm2 (Akgungor et al, 2005). In the darker shades and thicker ceramic specimens, (give combos) had reduced light transmission as low as values†¦ therefore, the resin cement cured through these groups of ceramic discs were far from possibly achieving adequate polymerisation (Kilinc et al, 2011). Another option is to use dual-cured resin cements and dentists and clinicians tend to prefer to use dual-cured resin cement systems when cementing all-ceramic restorations because of the important of achieving adequate light transmission through the indirect restoration, which would consequently lead to an optimal degree of conversion of the cement layer, and the chemical reaction of dual-cured resin cements theoretically guarantees a satisfactory polymerisation of the cement as it could compensate for the lack of DC obtained via photo-activated means which would consequently improve clinical performance. The chemical polymerisation of dual cured resin cements is expected to guarantee the cure of the material even in the deeper regions where limited light reaches (Indian journal of dental research). The lower light transmission influences polymer development by primarily decreasing the C=C bond conversion since the polymerisation process is reliant on on the light exposure to both the ceramic but most importantly, the resin cement (Ilday et al, 2012). The lower the degree of light reaching the luting agent, the lower the degree of polymerisation and consequently, the lower the success and longevity of the resin-strengthening mechanism (Pazin et al, 2008). Light transmission through the ceramic and to the resin cement is vital because if the ceramic restoration/disc prevents polymerisation light from reaching the resin cement layer, causing inadequate polymerisation of the cement layer. This consequently affects the strength of the restoration and the risk of debonding is higher in poorly polymerised cement (Akgungor et al, 2005). During the process of light activation, the light passing through the ceramic is absorbed and scattered. Thereby, the light irradiance produced by the light source is attenuated and its effectiveness is reduced as the ceramic thickness increases (Filho et al, 2010). This was proven in a study by Meng et al, in which it was shown that a light intensity of 800mW/cm2 decreased significantly to 160mW/cm2 after light transmission through a 2mm thick ceramic specimen (Filho et al, 2010). The greater the LT through a ceramic material, the greater the irradiance reaching the resin cement surfaces and accordingly the greater the DC and mechanical properties (Pick et al, 2010). The light transmission through a ceramic restoration may affect the degree of polymerization of resin cements, because the amount of light that reaches the cement layer is decreased.10In general, the factors affecting light transmission through a ceramic material include the thickness and shade of the ceramic material, its microstructure, and the presence of defects and porosities. However, the thickness of indirect materials interposed during photo-activation is a key factor for light attenuation, and polymerization generally decreases as thickness increases.12 The physical and mechanical properties of resin cements may be affected by the thickness and microstructure of ceramic restorations. It is important to emphasize that light-cured resin cements should receive an adequate energy density to reach good polymerization and mechanical properties. Furthermore, only effective photo-activation may ensure clinically acceptable hardness levels of dual-cured resin cements, mainly in criti cal areas. Considering these issues, further studies are needed to find a way to compensate light attenuation aggravated by the interposition of indirect restorative materials. http://www.duhs.edu.pk/download/jduhs-vol.7-issue-2/9.pdf DC Increasing the distance, thickness or opacity of ceramic/resin cement layer would mean that the top few millimetres of the resin cement would adequately polymerise and the remaining material would poorly polymerise due to lack of light (Silva et al, 2009). Insufficient curing also enhances the solubility of the cement which is the common cause of debonding of the restoration (Dias et al, 2008). As the properties of the resin cements are directly related to the degree of polymerisation, the resin cement used for cementation was measured using FTIR. Favourable resin cement polymerisation is vital in order to obtain optimal properties of the cement in order to prolong the longevity and clinical performance of the overlying all-ceramic restoration (Ilday et al, 2012). Various studies have stated the importance of a high monomer-to-polymer conversion with a highly cross-linked polymeric network in order to obtain a clinically successful resin-based restoration. The presence of an increased amount of monomers decreases both DC and mechanical properties and the fracture resistance of the restoration (Francescantonio et al, 2013). The DC% of the resin cement was decreased under the darkest, thickest ceramic combination than under the thinnest, lightest ceramic. The clinical performance of both the resin cement and the ceramic restoration depends on many important factors, with one of these being the degree of polymerisation (journal of the Serbian chemical society). One way of assessing the DC of the resin cements is through the use of Fourier transform infrared spectroscopy (FTIR) which detects the C=C stretching vibrations directly before and after curing of the resin cement material (Obradovic et al, 2011). Several factors have been shown to influence the polymerisation of resin-based cements such as the thickness of the resin cement layer, the intensity of the light source as well as the type of light source used, the distance from the curing tip and the duration of curing. The composition of the resin-cement can also affect the rate of polymerisation via factors like the polymer matrix, the filler particles and the coupling between matrix and filler (Obradovic et al, 2011). After a certain period of time, the DC graph appears to straighten off with no increase. This limited conversion is due to limited mobility of the radical chain ends and this limits the conversion of the pendant methacrylate groups from monomer to polymer (Obradovic et al, 2011). During the process of light activation, multiple growth centres are produced and the matrix transforms from a liquid to a viscous phase via the production of a polymer network from a monomer, i.e. the process of gelation. However, subsequently, the polymer network is highly cross-linked as most of the monomer is converted to polymer which results in the link between the monomers and the oligomers with the network being restricted due to limited diffusion (Filho et al, 2010). With light activation, there is a production of free radicals via the excitation of photoinitiators which enables the initiation step to occur instantaneously. As the propagation phase proceeds, the resin cement changes from a liquid to a viscous gel state, thereby making it increasingly difficult for monomers to diffuse to the polymeric growth centres. As a result, as the polymerisation reaction proceeds, less monomer is converted to polymer (Mendes et al, 2010). The rate of polymerisation reduces as the reaction proceeds due to the formation of fewer polymer growth centres. This promotes the formation of loosely cross-linked polymers and poorer mechanical properties (Silva et al, 2009). Adequate polymerisation of the resin cement is crucial for stability, optimal mechanical properties and the clinical performance of the indirect all-ceramic restoration. Furthermore, a greater degree of polymerisation would result in a greater bond between the resin-cement and the ceramic and consequently, maximum bond strength (Ilday et al, 2012). Along with using thinner or less opaque ceramic and resin cement layers, the cure depth of the resin cement, the degree of conversion and consequently the strength of the restoration can be increased by longer light exposure times or increasing the light intensity (Ilday et al, 2012). The latter two factors were not evaluated in this study. Insufficient polymerisation commonly causes early failure of the cemented all-ceramic restoration (Duran et al, 2012). BFS Flexural strength were found to show a relationship with conversion of double bonds with the resin cement (Ozturk et al, 2005). Ceramic specimens luted with a resin luting agent exhibited greater flexural strengths than the specimens without any form of luting agent (Pagniano et al, 2005). Look at pagniano journal for more info- if space left. The discs were left for 24 hours prior to BFS testing because the cement undergoes polymerisation for 24 hours after curing and if BFS was tested straight after curing, then the cement would not have reached the maximum polymerisation possible and therefore the risk of debonding and poor flexural strength is greater (Akgungor et al, 2005). The magnitude of strengthening is reliant on on the flexural modulus of the resin cement. This can also be known as the modulus of elasticity. (value of resin cement according to dr Addison journal). The modulus, in other studies, has been identified to be between 7 and 12 GPa. The elastic modulus of the cement is vital to study because it is related to how effectively stress can be transmitted between the all-ceramic restoration and the tooth structure. Moreover, it provides an indication as to how well the cement can resist elastic deformation which ultimate would endanger the integrity of the bonded interface between the ceramic and cement. Ideally, the resin cement should have an elastic modulus that is between that of dentine and the ceramic restorative material (Braga et al, 2002). Flexural strength of brittle materials is likely to be more affected by surface defects or imperfections such as porosity, cracks and other related flaws. Specimen failure is thought to initiate at the bottom surface of the specimen and all ceramic specimens were placed with the non-irradiated surface facing towards the load application and therefore a lower DC would lead to a reduced flexural strength (Pick et al, 2010). From BFS testing, it was evident that a decrease in BFS generated at the resin-ceramic interface when testing the ceramic specimen (A3.5 at 1.40mm) with the lowest DC. Resin coating significantly increased the mean BFS of the greatest conversion system but not as significantly in the other two groups of ceramic specimens tested. It should be noted that the system with the greatest DC had the greatest change in BFS which highlights the importance of DC on the magnitude of resin-reinforcement that is achieved (Fleming et al, 2012). Despite the resin-reinforcement, it is suggested by Yesil that failure still occurs and the mode of failure is caused by surface flaws or flaws within the ceramic material, the adhesive layer, or the bonded cement and flaws in the interface (Yesil, 2009). Furthermore, in a different study carried out by Thompson et al, the results demonstrated that when clinically failed glass-ceramic restorations were analysed, the majority of these restorations failed because of fractures and most of the fractures initiated from flaws and stresses originating from the adhesive resin cement interface and not from the restoration contact surface (Yenisey et al, 2009). Clinically, the thickness and opacity of the ceramic restoration acts as a barrier to light penetrating the methacrylate resin-based composite cements. Therefore, the durability of the bond produced between the ceramic restoration and the resin cement as well as the interface between the cement and the surrounding tooth structure will be compromised. For resin-based composites, a maximum value of DC is ideally wanted in which there is complete conversion of the monomer double bonds to network contributory single bonds. However, the conversion is normally between 45-70% because vitrification stops the reactions by inhibiting diffusion (Isgro et al, 2011). The strength values may be different due to the absence of polishing in the ceramic specimens that were tested for BFS. The discs used in LT testing were polished whereas the ceramic discs tested in BFS were not polished. Instead, the internal fit surfaces of the dental ceramics were roughened to promote adhesion. The strength values obtained may have been affected by the absence of polishing of dental ceramic specimens prior to mechanical testing. (see Isgro et al, 2011) for more info. Give values of % increase between cemented and uncemented samples and the mean values. Look at Pagniano et al, 2005 for information on how the interaction between cement and ceramic affects BFS. Add if word count available. Future work Look at effect with different light output- look at Duran et al, 2012 journal. If space left, look at Pazin et al journal for info on degree of cross-linking. Look at SEM images Look at Molin et al, 2006 and Isgro et al, 2011 for info on contraction stresses for BFS In conclusion, adequate polymerisation is desirable to reduce problems associated with post-operative sensitivity, microleakage, risk of recurrent caries, discolouration, in addition to decreased mechanical, chemical and physical properties of the resin cement. Furthermore, it will compromise the clinical success and longevity of the restoration. Sufficient DC would also improve the biocompatibility of the restoration and most importantly, the resin cement layer by reducing the number of residual monomers that are leached into the oral environment (Kim et al, 2009; Yan et al, 2010; Braga et al, 2002).

Intrinsic value Essay

Moral judgments are decisions, not conclusions Decisions ought to be made situationally, not prescriptively We should seek the well-being of people, rather than love principles. Only one thing is intrinsically good, namely, love: nothing else Love, in this context, means desiring and acting to promote the wellbeing of people Nothing is inherently good or evil, except love (personal concern) and its opposite, indifference or actual malice Nothing is good or bad except as it helps or hurts persons. The highest good is human welfare and happiness (but not, necessarily, pleasure) Whatever is most loving in a situation is right and good–not merely something to be excused as a lesser evil Moral theology seeks to work out love’s strategy, and applied ethics devises love’s tactics. Love â€Å"wills the neighbour’s good† [desires the best for our neighbour] whether we like them or not The ultimate norm of Christian decisions is love: nothing else The radical obligation of the Christian ethic to love even the enemy implies unmistakably that every neighbour is not a friend and that some are just the opposite. Love and justice are the same, for justice is love distributed Love and justice both require acts of will Love and justice are not properties of actions, they are things that people either do or don’t do Love and justice are essentially the same Justice is Christian love using its head–calculating its duties. The Christian love ethic, searching seriously for a social policy, forms a coalition with the utilitarian principle of the ‘greatest good of the greatest number.’ The rightness depends on many factors. The rightness of an action does not reside in the act itself but in the loving configuration of the factors in the situation–in the ‘elements of a human act’ –i.e., its totality of end, means, motive, and foreseeable consequences.

H. G. Wells Essay - 1365 Words

Herbert George Wells had a mind well ahead of those in his time period. Wells often looked towards the future in his work as he became and important piece to the foundation of science fiction. Herbert was born into a family that was considered lower-middle class but struggled greatly to keep that spot in the class system of that time in England. His father, Joseph Wells owned a store but gained more profit from his ability to coach and play cricket (Hartsveldt 1). His family was just barely getting by when his father had to retire from cricket due to an injury (Hartsveldt 1). This caused his mother to have to get a job as a housekeeper for a wealthy family. And because of having a working wife and mother their family fell out of the†¦show more content†¦He stayed with her until she died in 1927 (Rollyson 1). However being married did not stop Wells from having many other sexual relations with several women including those of Rebecca West, Moura Budberg and Odette Keun (Roll yson 1). All of these relationships resulted in him having several children out of wedlock. The only good thing that came from all of these relationships with all of these different women is Wells is able to use disguised versions of these women and their stories in some of his own stories. Wells also often attacked restrictive sexual morals in his work, which is a very prominent theme in his book Ann Veronica (Hartsveldt 1). Wells often looked towards the future; he shows this in many of his works. But his view of the future changes immensely as he goes through his life (Loveday 1). Before World War one Wells had somewhat of a positive view of the future and excitement almost. Just as we see a future full of super computers and hovercrafts, Wells saw much of the same exciting things in the future. But as time goes on, his views begin to change. While the world is recovering from World War one, Wells beings to gain a very pessimistic view of the future of mankind, and of the world . 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The Attack on Mumbai and 9-11 - 613 Words

The attack on Mumbai ( 26/11 , 2008 ) has been an extremely serious tragedy proportions. Not only shook Mumbai people , but also the country as a whole . Its impact has been in politics in South Asia. Terrorism, as such, has been dominating the political scene since the last decades , especially after the cowardly attack on World Trade Center on 9/11 , 2001. Although the official version of the law has undergone severe questioning , yet this event was used by the U.S. to promote its objective of controlling the oil wealth in western Asia. This led to a chain of events leading to the invasion of Afghanistan and the U.S. occupation of Iraq . This resulted in total disgrace on the people of Iraq, a symbol which comes in the form of Muntadhar al- Zaidi, an Iraqi journalist throwing his shoes at George Bush. (December 2008 ) . The Al Qaeda was blamed for the 9/11 Commission has a long history and that his works came to the surface, one got to know in due time, which itself was formed U.S. to fight the Russian armies in Afghanistan. The word Islamic Terrorism was built by the U.S. media uncritically and was picked up by the global media . The meanings of the words Jihad and Kafir were modified to suit the indoctrination module developed by U.S. to train terrorists in specially created Madrasa in Pakistan. It is left on one of these groups that have wreaked havoc in South Asia, Kashmir and parts of India , in particular. As this type of terrorism has also been the principalShow MoreRelatedTerrorism and Political Violence by Alex Schmid1312 Words   |  5 Pagesinstitution, etc.) violently attacks someone else (government, civilians, etc.) in order to intimidate the opposing government or cripple it. 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Analytical Study on the Employee Issues in an MNC

AN ANALYTICAL STUDY ON THE EMPLOYEES ISSUES IN A MNC ABSTRACT This study shows that how the different leadership theories, style and Tuckmans team building model can help to improve the behaviour of the employees at the organisation. A leader must have influence on his subordinates for encouraging them to work and achieve the predetermined goals. Different behavioural approaches help a person tin learning and Tuckmans model define how a team can be formed and work for achieving the organisational objectives. Different internal issues of the employees affect the performance of themselves and organisation, so it should be rectified and resolved as soon as possible before it has any negative affect on organisational culture. Top Management and leaders should take important necessary steps for resolving the internal issues of the employees at the organisation. The role of leadership can be fully realised in the organisation only when the appropriate leadership pattern is followed. This makes managers essential to understand and identify the various theories and styles are available. Leadership can be defined in general term as the process of influencing the behaviour of others to work willingly and enthusiastically for achieving predetermined goals. As according to Tennenbaum et al (1961), leadership is interpersonal influence exercised in a situation and directed through communication process, towards the attainment of a specified goal or goals. 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The Role of Modern Industrial Manager Free Essays

string(54) " and environment you could achieve excellent results\." MNGT352 Advanced Modern Management The role of a modern industrial manager Prashanth Balacumaresan (200679951) Word Count: 1965 A manager is someone in charge of an organisation or subunit. Many would fit the bill of a manager besides a chief executive, including coaches, bishops, foremen even presidents and prime ministers. What is the role of a manager? If you did ask someone in a managerial position what they did they would probably tell you that they plan, organize, coordinate and control. We will write a custom essay sample on The Role of Modern Industrial Manager or any similar topic only for you Order Now Mangers are persistent individuals and they perform their activities in concise, diverse manners. Study shows that most activities performed by chief executives last less than 9 minutes and only a small fraction of the time do activities last an hour long. The work pace for most chief executives and foremen are relentless, spending their whole day receiving calls and mail with every break interrupted by a subordinate looking for some sort of guidance (Mintzberg 1990). The role of an ideal manager should be a balance between the roles Mintzberg has described. This is because a manger is the commander in chief of an organisation and through this role he has contact to various interpersonal relationships. This gives his the opportunity to gain access to various sorts of information which would then enable him to put to good use by planning effective strategies, making decisions or implement in action (Waldron. M. W, Vasanthakumar. J Arulraj. S 1997). Managerial roles accentuates reasoning and control, and it does not matter whichever direction the focus is on, the manager should always look at ways to achieve results that would make positive impact and make people continue contributing to his or her organisation. In 1981 Arnaldo conducted a survey of hotel general managers by adapting Mintzberg approach to managerial behaviour. What he found out from this research was that a large majority of mangers viewed leadership as the most important role among the ten roles as proposed by Mintzberg. From this view leadership is an essential quality required for one who is a manager. (Zaleznik. A, 1978). The trait theory perspective suggests that certain individuals possess the qualities and characteristics that highlight them as natural born leaders and this is what will differentiate them from their subordinates. Northouse, P2010). Although this suggests that leadership is a quality that cannot be learnt but one that is acquired , (Worsfold,1989)it would give a person who is likely to take up a role as a manager an insight of the characteristics and qualities that are essential for a leader. Furthermore one need not necessarily stick to its outline as leadership is a role that allows an individual to show his or her unique abilities to command and influence others. (Hollander,1978). Project leadership is essentially defined as a process that fits into a managerial job that would take into consideration the requirement and perquisite of those people who decide to stand besides you to see the completion of a particular task. (Cleland,1995). Project leaders should not be too rigid and exercise authority over the situation within leadership criteria (Cleland and Ireland, 2007) but rather as Goetsch and Davies(2006, 254-255) say inspire individuals in making entire enthusiastic along with intentional dedication towards achieving company aims. Thus one does not need to be intellectually superior to be a manager but rather one need to be determinant, strong willed, analytical, intelligent and most importantly be tolerant. (Zaleznik. A ,1978). Kanji (2008) states leadership is defined as the conduct related by activities in taking charge signifying the immense difficulties faced by managers and professors. Therefore leadership is a variation of characteristics, principles, behaviour and attitude that acts as the key to long term performance of established organisations. (Lakshman, 2006). Having an action mindset about the work environment is another trait required by a manager. A popular visual metaphor indicates that an organisation is a chariot pulled by wild horses which represent the emotions, anticipation and ambitions and needs of people in the organisation. Keeping onto to the same track requires just as the same skill that is required to set off in an entirely new direction. Having an action mindset in this context would be to understand the nature of the situation and utilising the capabilities of the team helping to stay on and maintain direction. Gosling Mintzberg, 2003) Nearly all managerial decisions and actions are influenced by the assumptions made based on observation about human behaviour. Douglas McGregor published in his book The Human Side of Enterprise, two very unique ways of looking at human nature namely Theory X and Theory Y. McGregor also assumed that a typical manger should operate on the context that his employees are either Theory X or Th eory Y. Assumptions uch as these mould the manager’s perspective on his employees resulting in either a Theory X manager, who would assume a direct and harsh approach denying employees control over their work ,using an incentive based reward system to monitor performance and constantly supervise his employees or rather a Theory Y manager who would be more lenient towards his employees granting them positions of responsibility and structuring the work environment in a manner which would result in efficient methods to solve problems and increase productivity. McGregor ,1960) The Hawthorne experiments conducted by Elton Mayo from 1924 to 1934 prove this point by clearly illustrating that even when the working conditions were varied the team dynamics of the team remained the same. The women who participated in the experiment formed a cooperative relationship and responded spontaneously to this experiment. As they were not pushed or forced to do work, and every decision they made would influence their work they formed a sense of responsibility and worked spontaneously. The productivity increased and the workers remained happy. According to McGregor a manager’s perspective on their employees which could be either Theory X or Theory Y can influence their decisions. What managers need is their employees to perform well and given the right incentive and environment you could achieve excellent results. You read "The Role of Modern Industrial Manager" in category "Essay examples" The ideal Theory Y manager would instead of a directive management approach rather choose an approach which would actually involve giving employees positions of responsibility and forming mutually beneficial relationships. This is what was clearly emphasized by Mc Gregor as a core component of Management. What is lacking is most managers fail to understand this fact (Bobic. M. P Davis E. W). Human motivation in the workplace cannot be defined of falling into the category of either Theory X or Theory Y. It should be rather viewed as something more complicated which is rather a concoction of the two (Miner, 1980; Schein 1970). It has been observed by many through social interactions with managers over several years that most managers use a blend of theories X, Y and Z rather than sticking to the framework of one particular on (Sharma. S 1998). Self regulation is the process of mastering ones emotions. A person who has mastered their emotions would be adaptable to change and would not panic in a circumstance where change would influence his workplace. Self regulation is a key factor that would be influential in the workplace as due to the modern technological trend and competitiveness businesses and companies exist with a great of ambiguity and uncertainness. Companies merge and break at rapid paces and technology is not constant and it will change. Goleman,1998) currently most companies are adapting to advanced manufacturing technologies that are intended to optimize and improve performance in various aspects of the workplace. These are opportunity to revolutionize the way production processes. Large companies are already making the switch towards these innovations in order to enhance the performance and increase the positions in the global markets. (Tidd, 1991) Industries are constantly undergoing revolutionary t echnological change to transform them abound. Examples include switching from metal engine parts to ceramic and switching from lead acid to lithium ion in batteries. When these situations arise a self regulatory person would possess the dexterity to hold his judgement, seek information and adapt to the changes. Effective team working skills are one that is required of a manager. The ability to coordinate individual actions (Zaccaro, Rittman, and Marks 2001) and having a better communication structure among team members can greatly influence the performance of the effectiveness of the team. Team leaders who are encouraging and involve all members in team problem solving enable collective information processing that maximises the teams effectiveness. Zaccaro et al. ) Good managers enable their teams to remain goal oriented, ensure a collaborative setting for the team members, build confidence, demonstrate technical skills, set their priorities, manage performance expectations and bring back excellent results. (LaFasto, Larson 2001). Essentially team leaders, who set high performance goals, demonstrate a clear set of strategies and push their team m embers to their full potentials will display higher team efficiency and cohesion rather than team leaders who do not involve themselves in such tasks. Zaccaro et al. ) Motivation is also a key role for the manager. He or she must be themselves be motivated to perform the task at hand and meanwhile they should be able to motivate the team by keeping the team morale upHow a manager motivates his employees could be varied according to the approach he or she takes. Firstly there is the KITA approach which literally translates as kick in the pants which can either be a negative or a positive approach depending on the manager. Negative KITA is a direct action approach, and it has its drawbacks of being physically confronting which can build up negativity among the employees and the manager. There is also the softer positive approach which is considered as a seduction technique which is the promise of incentive to the employee which can get them to produce good work. (Hertzberg, 1968) This is supported by the expectancy theory that proposes the idea that people work harder depending on the size of the reward. (Mullins, 2007). According to Fredrick Hertzberg motivation relies on two factors firstly the hygiene factors that deal with factors such as working conditions, job security etc and the motivator factors. An employee would usually expect the hygiene factors to be implemented in the workplace as these are factors that help an individual to settle down in an environment. Taking these away from an employee would automatically make him or her dissatisfied and hence de-motivated to work. The other motivator factors are based on an individual’s desire to be better and rise above others. These include status, recognition and sense of achievement. Let us take the company Innocent Drinks for example. They motivate their staff by providing a working environment which is pleasant i. e. the inclusion of trees inside the offices and having Astroturf floors. They also provide free breakfast, a team weekend every year and also scholarships of ? 1000 to employees to fund personal projects such as taking a course etc. Even in their weekly meetings they make their staff feel valuable and this way Innocent helps to keep its staff happy. This is a good model of How Hertzberg’s hygiene and motivational factors have been taken into account and keep employees motivated. (Caterer research how to motivate staff 2011) Mc Clelland’s achievement motivation theory categorizes the people who want to achieve. These people were motivated by intrinsic factors such as goals and aspirations of the individual rather than extrinsic factors such as salary etc. These sorts of people were identified by their affinity to perform difficult put potentially achievable goals, and their like to take risks. These are the sorts of characteristics expected in a manager. In conclusion what should be stated is that all these qualities may not be present in a manager but in general a good manager would be an ideal blend of some of these characteristics. These would not necessarily be outwardly showed but when the situation arises if one could perform that is what is essential. This is the internal meaning of the quote â€Å"Cometh the hour, cometh the man†. Bibliography Arnaldo, M (1981) ‘Hotel general managers: a profile’, The Cornell H. R. A. Quarterly November, 53-56. Bobic M. P and Davis E. W A Kind Word for Theory X: Or Why many New Fangled Management Techniques quickly fail. Cleland, D. I. (1995). Leadership and the project management body of knowledge. International Journal of Project Management, 13(2): 83-88. Cleland, D. I. and Ireland, L. R. (2007). Project Management: Strategie Design and Implementation (5th), Boston: McGraw-Hill. Goleman. D (1998) What Makes a Leader? Harvard Business Review pp. 92-102 Gosling J Mintzberg H(2003) The Five Minds of a Manager (Cover Story) Harvard Business Review 81(11) ,54-63 Goetsch, D. L. and Davis, S. B. (2006). Quality Management: Introduction to Total Quality Management for Production, Processing, and Services (5), New Jersey: Pearson Education International. Hertzberg F. (1987) One More Time: How do you Motivate Employees Harvard Business vol 46 issue 1 Review pp. 53-62 Hollander, E (1978) ‘Leadership Dynamics: A Practical Guide to Effective Relationships’, Free Press: New York. Kanji, GK. (2008). Leadership is prime: How do you measure Leadership Excellence? Total Quality Management Business Excellence, 19(4): 417-427. LaFasto F Larson C (2001) When Teams Work Best Thousand Oaks CA:SAGE Lakshman, C. (2006). A Theory of Leadership for Quality: Lessons from TQM for Leadership Theory. Total Quality Management Business Excellence, 17(1): 41-60. Mayo, E. (1933) The Human Problems of an Industrial Civilization, Macmillan. Mc Gregor. D (1960) The Human Side of Enterprise New York Mc-Graw Hill McClelland, D. (1967) The Achieving Society, The Free Press, Miner J. B (1980). Theory of organisational behaviour. Hinsdale, IL; Dryden Press Mullins J (2007) Management and Organisational Behaviour 8th Edition Northouse, P (2010) ‘Leadership: Theory and Practice 5th Edition’, Sage Publications: London. Schien E (1970) Organisational Psychology (2nd ed. ) Englewood Cliffs, NJ: Prentice Hall Sharma. S (1998) Enlightened Leadership in Indian Ethos: The way of Theory K. Management Change Vol 2 No 1 ,January- June 1998, pp. 93-104. Tidd. J (1991) Flexible Manufacturing Technologies and International Competitiveness, London: Pinter Waldron M. W, Vasanthakumar J and Arulraj. S. 1997) Improving the organization and management of extension. In Swanson. B. E Improving Agricultural Extension: A reference manual Worsfold, P (1989) ‘Leadership and managerial effectiveness in the hospitality industry’, International Journal of Hospitality Management, 8(2), 145-155. Zaccaro. S J, Rittman A. L Marks M. A (2001) Team Leadership. Leadership Quarterly 12 451-483 Zalenik,A (1978) Managers and leaders:are they different? Mckinsey Quarterly,(1), p 2-22 http. //www. catererresearch. com/Articles/2006/06/15/307200/how-to-motivate staff. html [Accessed 21/11/11] How to cite The Role of Modern Industrial Manager, Essay examples

Banning Child Labour in Developing Countries Essay Example For Students

Banning Child Labour in Developing Countries Essay Banning child labour in developing countries Child labour has negative impacts upon children’s health. Child labour impedes upon the children’s education, which is vital for the child’s future prospects. My first contention is that child labour has negative impacts upon children’s health. To strengthen this claim, I will provide two studies that demonstrate that this is true. The first study, conducted by Francois-Charles Wolff, and Maliki, surveys the impact on health that child labour has on Indonesian students, aged between 10-15 simultaneously involved in school and labour. 1 One measure they have used, is to compare the amount of health complaints between non-working and working children. They find a negative correlation, as the working children have more health complaints than the non-working. Wolff and Maliki write: â€Å"Working children tend to have more complaints than non-working children and that activities are more likely to have disrupted due to their health problems. 2 In the conclusion, of the report, Wolff and Malaki write: â€Å"We have investigated the effects of working activities on health among Indonesian children aged 10–15 years enrolled in school. Results from both descriptive statistics and regressions with the labor participation assumed exogenous leads to a negative correlation between working and health. 5 Another study that demonstrates that child labor is harmful to the worker’s health, was conducted by Roggero et. al, who examined the impacts of health that child labour has had on a wide range of developing countries. 6The authors demonstrate a relationship between mortality rates, undernourishment and child labor prevalence, for children aged between 10-14, with mortality rates and . .peaid/what/rural-development/index_en.htm 6, 7, 8 Roggero et.al. 2007, ‘The Health Impact of Child Labor in Developing Countries: Evidence from Cross-Country Data,’ Am J Public Health, vol 97(2) pp. 271-275 9, 11, 12 Human Rights Watch. 2011, ‘A Poisonous Mix: Child Labor, Mercury, and Artisanal Mining in Mali’ Human Rights Watch, Dec. 2011 10 http://www.miningfacts.org/Communities/What-is-Artisanal-and-Small-Scale-Mining/ 13 http://www. ilo.org/ipec/areas/CSEC/langen/index.htm 14 Child Labour: A Textbook For University Students, pp. 16 15 http://www.ilo.org/ipec/areas/Armedconflict/langen/index. htm 16, 17, 18, 19, 20 Blanco Allias, F Hagemann F. 2008, ‘Child labour and education: Evidence from SIMPOC surveys,’ International Labour Organization, June. 2008 21 http://news.bbc.co.uk/2/hi/business/3451117. stm