81 research outputs found

    Prerequisites for Black Box Picking Identification of Prerequisites for the Black Box Order Picking Method in Warehousing

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    Consolidation of orders is a time-consuming process in a warehouse. The company of collaboration for this master’s thesis, DB Schenker Logistics, wants to eliminate the process of consolidation by transitioning to the black box order picking method. Black box picking is a version of pick-and-pass where goods are picked in secondary warehouse zones before they are placed, and later picked, in a main zone. DB Schenker Logistics needs to understand what prerequisites are important for a successful black box system. The aim of this master’s thesis is therefore to identify the prerequisites needed for a black box picking system in a warehouse. Thereby, the thesis will provide support for warehouse designers to facilitate the implementation of a black box system. Data collection for the master’s thesis was conducted using a literature review, visits to DB Schenker Logistics’ warehouses, and visits to four case companies’ warehouses. During the warehouse visits, interviews and observations took place. Interviews were also performed with personnel working at DB Schenker Logistics. The literature review was used to develop a framework for assessing prerequisites for black box picking, which thereafter was used for data analysis of the collected empirical data. The framework focused on the three categories of system factors, product and order factors, and inventory factors, which were then further broken down into several subfactors. The identified factors were classified as prerequisites, simplifying but not necessary, and not prerequisites. The findings have implications for DB Schenker Logistics and for warehouses in general. For DB Schenker Logistics, the framework can be used to evaluate if prerequisites exist for black box picking, in order to avoid consolidation in the warehouse. Furthermore, the developed framework can be used by warehouse designers in general to assess if black box picking is suitable for application in a certain warehouse setting

    Organisationsutveckling ombord M/S Viking Cinderella

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    Problem Den kommersiella färjebranschen på Östersjön har genom åren blivit en etablerad del av den svenska turistnäringen. Viking Line är en av de största spelarna på denna marknad, med sju aktiva färjor i olika delar av landet. M/S Viking Cinderella är idag Viking Lines enda kommersiella kryssningsfartyg, med plats för över 2 500 passagerare, vilket föranlett att dess serviceavdelningen har ställts inför ett par utmaningar. Redan innan utbrottet av Covid-19-pandemin arbetade personalen ombord M/S Viking Cinderella i stor omfattning med administrativa uppgifter som inte bidrog till kundupplevelserna. Syfte Studiens syfte är att undersöka om funktionschefernas arbete inom M/S Viking Cinderellas kommersiella ombordverksamhet är organiserat för att möta deras verksamhetsbehov. Dessutom syftar studien till att ge Viking Line en djupare inblick i dess verksamhet och organisation. Teoretiskt ramverk Studiens teoretiska ramverk är baserad på aktuell vetenskaplig litteratur inom studieområdet, vilket är den struktur som kan stödja eller motsätta teorin inom forskningsstudien. Det teoretiska ramverket ger sedermera möjlighet att analysera M/S Viking Cinderellas funktionschefers arbete inom den kommersiella ombordverksamheten. Vidare presenteras fem av FN:s globala hållbarhetsmål och kopplas till studiens syfte. Det teoretiska ramverket fungerar som en grundpelare för studien och definierar analysmodellen vilken lägger grund för att kunna analysera studiens resultat och slutsats. Metod Studien genomfördes som en explorativ studie där digitala intervjuer genomfördes för att samla in primärdata från fem funktionschefer, två direktörer och intendenten ombord M/S Viking Cinderella. Sekundärdata samlades in genom en litteraturstudie som inledningsvis gav en grundlig förståelse för de berörda områdena, och därefter möjliggjorde en analys av primärdatan för att kunna besvara studiens forskningsfrågor. Resultat och konsekvenser M/S Viking Cinderella präglas idag av en tudelad hierarkisk organisationsstruktur, där flertalet ingående parter påverkar beslutsfattandet som rör den kommersiella ombordverksamheten. Organisationsstrukturen leder vidare till en förstärkning av de subkulturer som etablerats inom organisationen, vilket ytterligare bidrar till den instutionalisering som hindrar dess organisatoriska lärande. Dessa faktorer påverkar M/S Viking Cinderellas gemensamma målbild, vilket vidare stärker den splittrade organisationen. Förändringsarbetet ombord påverkas vidare av det bristande informationsflöde som hämmar ett tydligt led i beslutsfattandet. Funktionscheferna påverkas vidare av en stor administrativ börda vilket medfört en tidsbrist som genomsyrar organisationens möjligheter till utveckling och organisatoriska växande

    Effects of a Mediterranean diet on blood pressure: A systematic review and meta-analysis of randomised controlled trials and observational studies

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    Objective: To conduct a systematic review and meta-analysis investigating effects of MedDiet on blood pressure in randomised controlled trials (RCTs) and associations of MedDiet with risk of hypertension in observational studies. Methods: PubMed, The Cochrane Library and EBSCOhost were searched from inception until January 2020 for studies that met the following criteria: 1) participants aged ≥18 years, 2) RCTs investigating effects of a MedDiet versus control on BP, 3) Observational studies exploring associations between MedDiet adherence and risk of hypertension. Random-effects meta-analyses were conducted. Meta-regression and subgroup analyses were performed for RCTs to identify potential effect moderators. Results: Nineteen RCTs reporting data on 4137 participants and 16 observational studies reporting data on 59,001 participants were included in the meta-analysis. MedDiet interventions reduced systolic and diastolic BP by a mean -1.4 mmHg (95% CI: -2.40 to -0.39 mmHg, p=0.007, I2=53.5%, Q=44.7, τ2=1.65, df=19) and -1.5 mmHg (95% CI: -2.74 to -0.32 mmHg, p=0.013, I2=71.5%, Q=51.6, τ2=4.72, df=19) versus control, respectively. Meta-regression revealed that longer study duration and higher baseline systolic BP was associated with a greater decrease in BP, in response to a MedDiet (p<0.05). In observational studies, odds of developing hypertension were 13% lower with higher versus lower MedDiet adherence (95% CI: 0.78 to 0.98, p=0.017, I2=69.6%, Q=41.1, τ2=0.03, df=17). Conclusions: Data suggest that MedDiet is an effective dietary strategy to aid BP control, which may contribute towards the lower risk of CVD reported with this dietary pattern. This study was registered with PROSPERO: CRD42019125073. KEY WORDS: Mediterranean diet, blood pressure, hypertension, cardiovascular diseas

    Gameplay Progression : Om skapandet av en jämn progression av spelmoment till dataspelet Testament

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    Det här arbetets slutgiltiga uppgift har varit att skapa ett första utkast till enövergripande plan för en jämn fördelning av spelmoment för spelet Testament, ett spel som utvecklas för Svenska Kyrkan med syfte att användas inom konfirmandundervisning. Med spelmoment menas exempelvis story, miljö, utrustning och liknande. Arbetet ger inledningsvis en kort översikt över hur leveldesignen inom dataspel har utvecklats och går därefter in på det mer specifika området gameplay progression, utvecklat av Mike Lopez, som ger en översyn över vad som krävs för att skapa ett spel med en jämn fördelning av spelmoment.Därefter används denna metod för att analysera det redan befintliga spelet The Legend of Zelda: Twilight Princess, för att testa Lopez metod, innan arbetet med att skapa en egen plan tar vid. Resultatet av uppsatsen har nått målet med en övergripande plan för en jämnfördelning av spelmoment för spelet Testament, en plan som dock kommer att behöva ses över och omarbetas under det att utvecklingen av det faktiska spelet tar vid, men som ger en bra överblick över vilka delar som fungerar väl och vilka som kan behöva extra arbete i den stundande utvecklingen

    Blå flickor men blåare pojkar : En undersökning om hur könsrollerna porträtteras i Leksakskataloger 2014 -2015

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    The purpose of this qualitive content analysis is to examine and analyse how children are visualized in toy catalogs, depending on their gender, 2014 - 2015.   It is important to observe how advertisement maintains the gender stereotypes norms of our society, since it has a major impact on our self-image and identity. Especially when it comes to children, who absorb everything and also because it is during the childhood the socialization process begins.   It is common that toy stores and toy catalogs distinguish boy toys from girl toys, based on the toy’s colour, form and function. This phenomena has become a topic of public discussion in recent years. Therefore, the two large toy companies, BR-leksaker and Toys “R” Us, claim to have published gender neutral toy catalogs by changing the gender roles and letting boys and girls play together with the same toys.   In order to gain more knowledge of toys impact on gender roles, we studied previous research by scientist in the field of gender, e.g. Almqvist, Butler and Connell. By using a qualitative method with a semiotic perspective, we found recurrent underlying aspects in the advertisements, by the selection of twelve pictures. The studies result implies that the studied toy catalogs are not yet equal, although a certain level of progress can be ascertained. Not even the three most equal advertisements visualized girls and boys equally, because of details such as stereotypical hairstyles, accessories and clothing. Furthermore, the study shows that girls are portrayed with boy toys than vice versa, which implies that boys are to a greater extent regarded as abnormal. 

    Mediterranean inspired diet and cardiovascular health. Experimental and clinical studies

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    Cardiovascular diseases cause the majority of morbidity and mortality in the western countries. Inadjunct, the worldwide prevalence of overweight and obesity is a growing problem not onlyamong adults but also among children and adolescents. In the Mediterranean countries theincidence of cardiovascular disease is less common and the difference in diet is one possibleexplanation. The purpose of the present studies was to evaluate the effect of a Mediterraneaninspired diet concerning blood lipid levels, vascular function and inflammation, in healthy subjectsand to investigate whether obese adolescents at young age already have risk factors such asincreased left ventricular myocardial mass (LVM). In addition, to get further insight into themechanisms behind vascular vasomotion, blood flow and arterial pressure responds were studiedin terms of interacting influence between the nitric oxide- and endothelin-systems.The endothelial mechanistic study was performed according to two separate protocols, one inhealthy subjects and another in experimental animals. Venous occlusion plethysmography wasused in humans to determine forearm blood flow and Sprague-Dawley rats were instrumentedwith indwelling catheters and systemic blood pressure was recorded in a conscious state. Thedietary intervention study, in healthy subjects with a normal lipid profile, lasted for four weeks. Itwas conducted in a cross-over design with Mediterranean inspired diet and a normal Swedishdiet, respectively. Blood lipids and vascular function in terms of forearm blood flow, carotid arteryelasticity, oxidative stress and inflammation were assessed and the results after each dietcompared. In paper IV obese adolescents and lean age-matched controls were investigated forblood pressure, lipid levels and LVM using magnetic resonance imaging.Total cholesterol, LDL-cholesterol, Apo-B and triglycerides fell by of 17% (p&lt;0.001), 22%(p&lt;0.001), 16% (p&lt;0.001) and 17% (p&lt;0.05), respectively after the Mediterranean inspired diet.No difference in vascular function was observed between the two diets. A reduction in whiteblood cells and platelets was observed after the Mediterranean inspired diet compared to theSwedish.An increase in LVM as well as elevated insulin- and triglyceride levels and blood pressure wereseen in the obese adolescents. The HDL-cholesterol level was also reduced. However, onlysystolic blood pressure and body mass index remained independent factors determining LVM.We found that diet is of great importance even in subjects with normal lipid levels. AMediterranean inspired diet would be of even greater importance for individuals at increased riskfor cardiovascular disease although the events may appear many years later. Lifestyle changesneed to be emphasized when fighting overweight, obesity and cardiovascular disease

    Blomstrande industri eller vissen klimatbov? En studie om rosors klimatpåverkan och blomsterbranschens miljömässiga hållbarhetsarbete

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    Konsumtionen av snittrosor i Sverige uppgår årligen till 101 miljoner svenska kronor, samtidigt som klimatkrisen är ett fortsatt problem. Tidigare arbete på området har primärt undersökt frågor relaterade till den sociala hållbarheten och deras påverkan på blomsterindustrin. I denna studie används en insamling av primärdata för att kunna analysera kvalitativ primärdata från intervjuer med respondenter vilka arbetar på företag verksamma inom blomsterindustrin. I det nuvarande miljömässiga hållbarhetsarbetet hos distributörer och återförsäljare prioriterades områdena logistik och transport, förpackningar, plast och avfall, samt lönsamhet. Det huvudsakliga angreppssättet hos intressenter kan ses som att kombinera förbättringarna inom den området av miljömässig hållbarhet med ökad lönsamhet. Komplexiteten kring hållbarhet belystes då hållbarhetsarbetet främst utförs inom företagen, och skillnaden mellan perception och verklighet framkom. I dagsläget finns det ingen certifiering för miljömässig hållbarhet som används av blomsterindustrin. Implementationen av en sådan certifiering kan leda till ökad reliabilitet, legitimitet och värdeskapande. Emellertid för en implementation av en certifiering också med sig flera risker, och därför är slutsatsen att blomsterindustrin bör avstå från ett certifikat, och istället använda krav från organisationer inom industrin för att driva det miljömässiga hållbarhetsarbetet framåt

    Blå flickor men blåare pojkar : En undersökning om hur könsrollerna porträtteras i Leksakskataloger 2014 -2015

    No full text
    The purpose of this qualitive content analysis is to examine and analyse how children are visualized in toy catalogs, depending on their gender, 2014 - 2015.   It is important to observe how advertisement maintains the gender stereotypes norms of our society, since it has a major impact on our self-image and identity. Especially when it comes to children, who absorb everything and also because it is during the childhood the socialization process begins.   It is common that toy stores and toy catalogs distinguish boy toys from girl toys, based on the toy’s colour, form and function. This phenomena has become a topic of public discussion in recent years. Therefore, the two large toy companies, BR-leksaker and Toys “R” Us, claim to have published gender neutral toy catalogs by changing the gender roles and letting boys and girls play together with the same toys.   In order to gain more knowledge of toys impact on gender roles, we studied previous research by scientist in the field of gender, e.g. Almqvist, Butler and Connell. By using a qualitative method with a semiotic perspective, we found recurrent underlying aspects in the advertisements, by the selection of twelve pictures. The studies result implies that the studied toy catalogs are not yet equal, although a certain level of progress can be ascertained. Not even the three most equal advertisements visualized girls and boys equally, because of details such as stereotypical hairstyles, accessories and clothing. Furthermore, the study shows that girls are portrayed with boy toys than vice versa, which implies that boys are to a greater extent regarded as abnormal. 

    The Reclaim game

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    Material for printing the game Reclai
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