The model of rejuvenation of a near-solidus crystal mush to produce large volumes of crystal-rich magma is tested here by analyzing the mineralogical, chemical, modal, and physical characteristics of the 31.1 Ma super-eruptive (2000 km3) Cottonwood Wash Tuff. It is the oldest in a series of three so-called "monotonous intermediate" ignimbrites from the Indian Peak-Caliente volcanic field in southern Utah and Nevada. A crystal-rich (~50% Pl > Qz ≈ Hbl ≈ Bt > Mag ≈ Ilm > Cpx + Zrn + Ap+ Po) dacite (62 - 69 wt% SiO2), the Cottonwood Wash Tuff is similar in age, volume, mineralogy, crystallinity, and elemental composition to the 28.0 Ma, ~5000 km3 Fish Canyon Tuff (~45% Pl + Kfs + Qz + Hbl + Bt + Ttn + Mag + Ilm + Ap + Zrn + Po, 66 - 68 wt% SiO2), used as the basis of the rejuvenation model, which suggests that magma chambers remain in a near-solidus state until a late heating event melts the magma enough to allow eruption. The Cottonwood Wash magma chamber was compositionally varied, as shown by the composition of mineral and juvenile clast compositions. Most of the whole-rock compositional variations are likely due to the variation of mineral proportions induced by shear in the magma chamber. A volumetrically minor component with evolved mineral compositionss, is represented by "evolved" juvenile clasts. Mineral compositions and experimental phase relationships show the pre-eruption magma crystallized at 800°C, 2.3 kb under water-undersaturated but oxidized conditions (delta QFM = 2.1). The majority of plagioclase and amphibole grains exhibit small-scale oscillatory zonation; where systematic compositional zonation exists, normal and reverse zonation are equally present. Cathodoluminescence of quartz reveals typically normally zoned phenocrysts with late resorption, considered to be the result of eruptive decompression. Many of the characteristics used to identify the warming of a near-solidus mush for the Fish Canyon Tuff are not present in the Cottonwood Wash Tuff [i.e., reversely zoned hornblende or plagioclase, partially remelted mineral aggregates, evidence of fluid saturation, resorption textures not related to decompression, rapakivi mantles, and hybrid andesite inclusions]. The Cottonwood Wash Tuff magma system did not undergo rejuvenation from a near-solidus state. Instead, the magma was apparently cooling and crystallizing just prior to eruption.

The model of rejuvenation of a near-solidus crystal mush to produce large volumes of crystal-rich magma is tested here by analyzing the mineralogical, chemical, modal, and physical characteristics of the 31.1 Ma super-eruptive (2000 km3) Cottonwood Wash Tuff. It is the oldest in a series of three so-called “monotonous intermediate” ignimbrites from the Indian Peak-Caliente volcanic field in southern Utah and Nevada. A crystal-rich (~50% Pl > Qz ≈ Hbl ≈ Bt > Mag ≈ Ilm > Cpx + Zrn + Ap+ Po) dacite (62 – 69 wt% SiO2), the Cottonwood Wash Tuff is similar in age, volume, mineralogy, crystallinity, and elemental composition to the 28.0 Ma, ~5000 km3 Fish Canyon Tuff (~45% Pl + Kfs + Qz + Hbl + Bt + Ttn + Mag + Ilm + Ap + Zrn + Po, 66 – 68 wt% SiO2), used as the basis of the rejuvenation model, which suggests that magma chambers remain in a near-solidus state until a late heating event melts the magma enough to allow eruption. The Cottonwood Wash magma chamber was compositionally varied, as shown by the composition of mineral and juvenile clast compositions. Most of the whole-rock compositional variations are likely due to the variation of mineral proportions induced by shear in the magma chamber. A volumetrically minor component with evolved mineral compositionss, is represented by “evolved” juvenile clasts. Mineral compositions and experimental phase relationships show the pre-eruption magma crystallized at 800°C, 2.3 kb under water-undersaturated but oxidized conditions (delta QFM = 2.1). The majority of plagioclase and amphibole grains exhibit small-scale oscillatory zonation; where systematic compositional zonation exists, normal and reverse zonation are equally present. Cathodoluminescence of quartz reveals typically normally zoned phenocrysts with late resorption, considered to be the result of eruptive decompression. Many of the characteristics used to identify the warming of a near-solidus mush for the Fish Canyon Tuff are not present in the Cottonwood Wash Tuff [i.e., reversely zoned hornblende or plagioclase, partially remelted mineral aggregates, evidence of fluid saturation, resorption textures not related to decompression, rapakivi mantles, and hybrid andesite inclusions]. The Cottonwood Wash Tuff magma system did not undergo rejuvenation from a near-solidus state. Instead, the magma was apparently cooling and crystallizing just prior to eruption.

<p>Den här uppsatsen handlar om motivation i monotona arbeten. Vi har även undersökt lönens betydelse i monotona arbeten. Det vill säga arbetar man endast för lönens skull eller finns det andra faktorer som spelar in?</p><p>Undersökningen är av en kvantitativ form och är gjord på Posten logistik och på ett brevbärarkontor i Karlstad. Först utgick vi från Maslow, Herzberg samt Hackman & Oldham för att koppla samman monotont arbete och motivation. Vi har även tagit upp aspekter som ledarskap och kommunikation för att se kopplingen mellan dessa faktorer och motivation.</p><p><strong></strong>För att få svar på våra frågor så har vi använt oss av en enkätundersökning. Vi har utgått ifrån en deduktiv ansats vilket innebär att vi använt oss av redan befintliga teorier för att förklara vårt resultat.</p><p>Resultatet visar på att det finns olika faktorer som motiverar individer till att arbeta i monotona arbeten. Dessa faktorer utgörs av lön, medarbetare och arbetsgivare. Att visa uppskattning genom positiv feedback är några av faktorerna som kan öka motivationen. Men det finns de som anser att lönen som är den avgörande faktorn till att vilja arbeta.</p>

Den här uppsatsen handlar om motivation i monotona arbeten. Vi har även undersökt lönens betydelse i monotona arbeten. Det vill säga arbetar man endast för lönens skull eller finns det andra faktorer som spelar in? Undersökningen är av en kvantitativ form och är gjord på Posten logistik och på ett brevbärarkontor i Karlstad. Först utgick vi från Maslow, Herzberg samt Hackman &amp; Oldham för att koppla samman monotont arbete och motivation. Vi har även tagit upp aspekter som ledarskap och kommunikation för att se kopplingen mellan dessa faktorer och motivation. För att få svar på våra frågor så har vi använt oss av en enkätundersökning. Vi har utgått ifrån en deduktiv ansats vilket innebär att vi använt oss av redan befintliga teorier för att förklara vårt resultat. Resultatet visar på att det finns olika faktorer som motiverar individer till att arbeta i monotona arbeten. Dessa faktorer utgörs av lön, medarbetare och arbetsgivare. Att visa uppskattning genom positiv feedback är några av faktorerna som kan öka motivationen. Men det finns de som anser att lönen som är den avgörande faktorn till att vilja arbeta.

Money is considered as a motivator for floor level employees, however it has temporary affect and employees’ motivation to work reduces with time. This study is conducted to know, how to motivate “amotivated employees”. In this study, the author has tested “monetary rewards” and “leaders’ empathy” in motivating amotivated floor level employees. The findings are that monetary rewards have no effect on employees’ state of amotivation. Whereas, “leaders’ empathy” has healing effect on employees’ amotivation. In response to “leaders’ empathy”, the amotivated employees have shown interest as well as responsibility in their work.

En av park- och gatuarbetarnas många verktyg, är den traditionella sopkvasten. Sopkvasten används för att städa upp ytor där maskiner inte kommer åt, såsom; under bänkar, i hörn och mindre områden. Vid användning av en traditionell sopkvast innefattar rörelsen rotation och framåtlutning av kroppsställningen, som kan om den utförs under en längre tidsperiod leda till muskuloskeletala besvär och ha negativa effekter på hälsan. Detta projekt syftar till att utveckla ett nytt rengöringsverktyg för att minska framåtlutad, roterad kroppsställning. Denna avhandling har använt en produktutvecklingsmetodik och en biomekanisk analys för att uppfylla en faktabas för att nå målet. Översyn av litteratur, biomekanisk analys och benchmarking användes för att ställa in kravspecifikationer för detta projekt. Projektet tillämpade David G Ullman iterativ produktutvecklingsmetodik, inklusive brainstorming, Quality Function Deployment, Morfologi, Pugh's matris och Failure Mode Effects Analysis. Vidare har en fungerande prototyp byggts som ett sista steg i utvecklingsfasen. Utvärdering av prototypen i jämförelse med den traditionella sopkvasten, utfördes med hjälp av 3D rörelseanalys (Qualisys motion capture-system) och ytelektromyografi (Mega 8-kanalsystem) på en testperson. Projektet resulterade i en fysiskt fungerande prototyp som kan användas till liknande uppgifter som en traditionell sopkvast. Prototypen påtvingar användaren att skjuta rengöringsverktyget framför kroppen med en symmetrisk kroppställning i alla tre planen. Jämförelsen mellan en traditionell sopkvast och prototypen visade en minskning i muskelaktivitet vid användning av prototypen. Dessutom visade rörelseanalysen att arbetsställningen var mindre framåtlutad och roterad i ryggen. Vidare kunde testpersonen hålla neutrala vinklar i axlar och handleder under hela utförandet av uppgiften. Märk väl att de biomekaniska analyserna enbart gjorts på en deltagare vilket inte är tillräckligt för att konstatera att prototypen bidrar till en mer hälsosam arbetsställning. / One of the park and street workers many tools, is the traditional broom. The broom is used to tidy up surfaces where machines can’t reach, such as; underneath benches, in corners and smaller areas. Using a traditional broom requires a twisted and forward leaning body posture that, if performed during an extended time period, can result in musculoskeletal problems and negative impact on the health. This project aimed to develop a new cleaning tool to reduce the forward-leaning, twisted body posture. This thesis used a product development methodology and a biomechanical analysis to fulfil, and evidence base the aim. Review of the literature, biomechanical analysis and benchmarking were used to set requirement specifications for this project. The project applied David G Ullman's iterative product development methodology, including brainstorming, quality function deployment, morphology, Pugh´s matrix and a failure mode effects analysis. Furthermore, a functional prototype was built as a last step of the development phase. Evaluation of the prototype, in comparison to the traditional broom, was performed using 3D movement analysis (Qualisys motion capture system) and surface electromyography (Mega 8 channel system) on one test person. The project resulted in a physically functional prototype that can be used for similar tasks as a traditional broom. The concept design dictates the user to push the cleaning tool in front of the body with postural symmetry in all three planes. The comparison between a traditional broom and the prototype showed a reduction in muscle activity when using the prototype. Furthermore, the movement analysis showed a working posture with less forward leaning and back rotation. Furthermore, the participant could keep neutral angles in the shoulders and wrists throughout the task. Note that, the biomechanical analyzes was only made on one test person which is not enough to conclude that the prototype contributes to a more healthy working posture.

The Wah Wah Springs Tuff (30.0 Ma) is one of several very large volume ash-flow tuffs (>3200 km³ of erupted magma) that were emplaced near the peak of the flare-up of activity in the Great Basin ignimbrite province of western North America. It can be characterized as a "monotonous intermediate" ignimbrite because of its intermediate concentrations of silica (~63 to ~70 wt. %), apparent uniform chemical and mineralogical characteristics, and crystal-rich nature (32 ± 10 % phenocrysts on a dense rock basis). The major phase assemblage found throughout deposit is similar to other monotonous intermediates with a few exceptions (pl > hnbl > bio, qtz >> cpx, opx > mt, ilm, ap, zcn, and po). Based on experiments on the monotonous intermediate Fish Canyon Tuff (Johnson & Rutherford, 1989a) and this phase assemblage, the Wah Wah Springs magma equilibrated between 775°C – 800°C. One hornblende-plagioclase thermometer with or without quartz (Holland & Blundy, 1994) and one Fe-Ti oxides thermometer (Anderson et al., 1993) most consistently yield temperatures within this range. The Fe-Ti oxides oxy barometer (Anderson et al., 1993) yield fO2 estimates 2 – 3 log units above the quartz-fayalite-magnetite buffer. The Al-in-hornblende geobarometer (Johnson & Rutherford 1989b) indicates pressures between 2.0 and 2.5 kb. Detailed compositional profiles across hornblende and plagioclase grains help constrain how intensive parameters changed during the evolution of the magma shortly before eruption. Plagioclase in the Wah Wah Springs displays oscillatory zonation with overall normal zonation (a maximum change of about An5 from core to rim). Hornblende is also zoned in Al2O3 and TiO2 which typically decrease as much as 2.5 wt. % and 1 wt. % respectively from core to rim. These zoning patterns are consistent with a decrease of temperature from core to rim that accompanied progressive crystallization of a large body of magma that closely approached equilibrium. These conditions in the parent magma for the Wah Wah Springs differ from interpretations of mineral compositions in the Fish Canyon Tuff which led Bachman et al., (2002) to propose that the near solidus magma body was "rejuvenated" or reheated immediately prior to eruption. This model cannot be applied to the Wah Wah Springs. Rather, the Wah Wah Springs magma appears to have been cooling and crystallizing prior to eruption.

Frågeställning Hur ser ledares syn på motivation ut? Hur arbetar ledare med att motivera medarbetare i produktionen? Varför arbetar ledare med att motivera medarbetare i produktionen? Vilka faktorer upplever medarbetare i produktionen som främst motiverande? Syfte Syftet med studien är att ur ett ledarskaps- och medarbetarperspektiv beskriva arbetsmotivation i tillverkningsföretag. Metod Studiens datainsamling genomfördes med flermetodsforskning - kvalitativ och kvantitativ metod - i en multipel fallstudie på två tillverkningsföretag. Semistrukturerade intervjuer genomfördes med totalt fem respondenter i ledarposition och slutna enkäter delades ut till medarbetarna i produktionen på respektive företag. Resultaten från intervjuerna analyserades tematiskt efter kodning och på enkätsvaren tillämpades univariat analys där variabler enskilt analyserats. Slutsats Studien påvisar att ledarna i tillverkningsbranschen antingen ser motivation som en inre drivkraft eller att den kommer ur arbetsglädje. Ledarna använder ett flertal metoder för att skapa arbetsmotivation för medarbetarna i produktionen. Bland dem är det endast arbetsrotation som tillämpas i syfte att motverka den negativa effekten av monotonitet i arbetsuppgifterna. Resurser används till arbetsmotivation i syfte att öka medarbetarnas produktivitet, prestation, måluppfyllelse och i slutändan för att säkerställa företagets framtid.Studien visar att de enligt medarbetarna främst motivationshöjande faktorerna är att få se resultatet av ett väl utfört arbete, att få ett erkännande för utförd arbetsuppgift, möjligheten att få utvecklas personligen på arbetet och att ha intressanta och lagom utmanande arbetsuppgifter. / Research questions What is the leaders view on motivation? How do leaders work to motivate manufacturing employees? Why do leaders work to motivate manufacturing employees? Which factors do manufacturing employees perceive to be most motivating? Purpose The purpose of the study is to describe work motivation in manufacturing companies from a leadership and employee perspective. Method The study applies a mixed methods research - qualitative and quantitative method - in a multiple case study at two manufacturing companies. Semi-structured interviews were conducted with a total of five respondents in leadership positions, and closed questionnaires were distributed to manufacturing employees in their respective companies. The interview results were analyzed thematically after coding, and the questionnaire results were analyzed with univariate analysis where variables were analyzed individually. Conclusion The study shows that leaders in the manufacturing industry either see motivation as an inner drive or that it comes from job satisfaction. Leaders use a variety of methods to create work motivation for manufacturing employees. Among them only job rotation is used to counteract the negative effects of monotonous work. Resources are put into work motivation in order to increase the employees’ productivity, performance, effectiveness and ultimately to ensure the future of the company.The study also shows that according to manufacturing employees the most motivating factors are to see the results of a job well done, recognition for one’s work, the opportunity of personal growth and to have interesting and challenging enough tasks.

<p>Repetitive and monotonous work is frequently associated with neck and shoulder pain and negative psychosocial factors inducing stress reactions. The present thesis concerns the relations between psychophysiological and subjective stress reactions, muscle activity measured by surface electromyography (SEMG) in the trapezius muscle, and neck and shoulder pain in women performing repetitive and monotonous work. In Study I cardiovascular and subjective stress reactions were investigated during computer work in a laboratory setting. The findings indicated that heart rate variability is a more sensitive and selective measure of mental stress compared with blood pressure recordings. Study II explored the relations between stress reactions and muscle activity during supermarket work. The results showed that perceived negative stress reactions may have a specific influence on muscle activity in the neck and shoulder region, which can be of importance for work-related musculoskeletal disorders in repetitive and monotonous work. In Study III the association between SEMG activity patterns and neck and shoulder pain was investigated during cash register work. It was found that pain-afflicted women had a different muscle activation pattern (more static, more co-contraction, less muscle rest) compared with pain-free women. Study IV was a follow-up study evaluating the introduction of job rotation among female cashiers. The results indicated positive effects on diastolic blood pressure, muscle activity, and partly on neck and shoulder pain, although perceived stress was unchanged. It was concluded that job rotation seems to have a limited effect on chronic neck and shoulder pain, but may be an effective preventive measure. The empirical findings are particularly relevant for women who, compared with men, more often perform repetitive and monotonous work and are also more often affected by neck and shoulder pain.</p>

Repetitive and monotonous work is frequently associated with neck and shoulder pain and negative psychosocial factors inducing stress reactions. The present thesis concerns the relations between psychophysiological and subjective stress reactions, muscle activity measured by surface electromyography (SEMG) in the trapezius muscle, and neck and shoulder pain in women performing repetitive and monotonous work. In Study I cardiovascular and subjective stress reactions were investigated during computer work in a laboratory setting. The findings indicated that heart rate variability is a more sensitive and selective measure of mental stress compared with blood pressure recordings. Study II explored the relations between stress reactions and muscle activity during supermarket work. The results showed that perceived negative stress reactions may have a specific influence on muscle activity in the neck and shoulder region, which can be of importance for work-related musculoskeletal disorders in repetitive and monotonous work. In Study III the association between SEMG activity patterns and neck and shoulder pain was investigated during cash register work. It was found that pain-afflicted women had a different muscle activation pattern (more static, more co-contraction, less muscle rest) compared with pain-free women. Study IV was a follow-up study evaluating the introduction of job rotation among female cashiers. The results indicated positive effects on diastolic blood pressure, muscle activity, and partly on neck and shoulder pain, although perceived stress was unchanged. It was concluded that job rotation seems to have a limited effect on chronic neck and shoulder pain, but may be an effective preventive measure. The empirical findings are particularly relevant for women who, compared with men, more often perform repetitive and monotonous work and are also more often affected by neck and shoulder pain.