| 1. |
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3-D band-stop FSS for X-band and Ku-band
- 2017
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Ingår i: 2017 Progress In Electromagnetics Research Symposium - Fall (PIERS - FALL). - : Electromagnetics Academy. - 9781538612118 - 9781538612125 ; , s. 671-675
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Konferensbidrag (refereegranskat)abstract
- A 3-D Frequency Selective Surface (FSS) with band-stop characteristics for X-band and Ku-band is proposed. A 3-D FSS unit cell is constructed by analyzing two 2-D FSS's. The size of the 3-D FSS unit cell is 5 mm × 5 mm wherein two layers of FR4 substrate with respective widths of 0.762 mm and 0.5 mm are used. Dual stop bands are obtained with this FSS unit cell around 10 GHz and 17.4 GHz; where a wide stop-band of 5.2 GHz is obtained. The parametric study carried out on the proposed design in terms change in nature of substrate, alternate use of different substrates and variation in angle of incidence. The 3-D FSS shows its band rejection property X-band and Ku-band respectively. Ansoft HFSS commercial EM solver software is used to carry out the simulation work.
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| 2. |
- A. Almaqtari, Faozi, et al.
(författare)
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Earning management estimation and prediction using machine learning: A systematic review of processing methods and synthesis for future research
- 2021
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Ingår i: 2021 International Conference on Technological Advancements and Innovations (ICTAI). - : IEEE. - 9781665420884 - 9781665420877 ; , s. 291-298
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Konferensbidrag (refereegranskat)abstract
- The present study highlights earning management optimization possibilities to constrain the events of earning management and financial fraud. Our study investigates the existing stock of knowledge and strand literature available on earning management and fraud detection. It aims to review systematically the methods and techniques used by prior research to determine earning management and fraud detection. The results indicate that prior research in earning management optimization is diverged among several techniques and none of these techniques has provided an ideal optimization for earning management. Further, the results reveal that earning management determinants are complex based on the type and size of business entities which complicate the optimization possibilities. The current research brings useful insights for predicting and optimization of earnings management and financial fraud. The present study has significant implications for policymakers, stock markets, auditors, investors, analysts, and professionals.
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| 3. |
- A., Johnsson, et al.
(författare)
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Physical inactivity increases the risk of endometrial cancer and premenopausal breast cancer
- 2015
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Ingår i: Cancer Research. - 0008-5472. ; 75:15 Suppl
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Konferensbidrag (refereegranskat)abstract
- Background. Epidemiological studies indicate that physical activity reduces the risk of cancer. Physical inactivity or sedentary behavior, has recently been suggested as a risk factor independent of physical activity level. Breast and endometrial cancer incidence have both been associated with physical activity, and endometrial cancer incidence with physical inactivity/sedentary behavior. The purpose of the present study was to investigate physical inactivity as a risk factor for breast cancer, divided into pre- and postmenopausal subtypes, and for endometrial cancer, and to explore possible dose-response relations regarding the level of physical inactivity. Methods. In a population-based prospective cohort study, 29 520 women in the southern part of Sweden, in ages between 25 and 64 years, participated. A questionnaire-based survey was performed 1990-92. Their reported professions were classified as sedentary or not which together with reported participation in competitive sports constituted the basis for classification into three activity-levels; (1) physical inactivity, defined as having sedentary occupation and no participation in competitive sports, (2) partly inactive, defined as either having a sedentary occupation or non- participation in competitive sports, (3) Physical active, defined as not having a sedentary occupation and participation in competitive sports. The association between physical inactivity and pre and postmenopausal breast and endometrial cancer incidence were analyzed by Cox regression, adjusted for hormonal factors, family history of cancer, body mass index (BMI) and age. Results. Physical inactive women had a significantly increased risk of endometrial cancer (HR = 2.41, 95% CI 1.14-5.11) and premenopausal breast cancer (HR = 2.40, 95% CI 1.14-5.02), compared with women who were less physical inactive. No such association was found for postmenopausal breast cancer. Analysis of linear trend showed a significant dose-response relationship with increased risk of both premenopausal breast cancer (ptrend 0.02) and endometrial cancer (ptrend
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| 4. |
- A. Mouris, Boules, et al.
(författare)
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A Dual-Polarized Multi-Antenna Structure for Simultaneous Transmission of Wireless Information and Power
- 2019
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Ingår i: 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019 - Proceedings. - : IEEE. ; , s. 1805-1806
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Konferensbidrag (refereegranskat)abstract
- In this paper, a dual-polarized multi-antenna structure is designed at 2.45 GHz with the goal of allowing simultaneous transmission of wireless information and power. Differential feeding was used to minimize the mutual coupling due to radiation leakage in addition to a mushroom-type EBG structure for suppressing the surface waves. Simulation results for the proposed structure show a mutual coupling level lower than -40 dB between the information transmitting antenna and the power transmitting antennas for both polarizations. The isolation level between the antennas is improved by at least 22 dB and 14 dB for the E-plane and H-plane coupling, respectively.
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| 5. |
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| 6. |
- Aabel, Lise, 1992, et al.
(författare)
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Distributed Massive MIMO via all-Digital Radio Over Fiber
- 2020
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Ingår i: Conference Record - Asilomar Conference on Signals, Systems and Computers. - 1058-6393. ; 2020-November, s. 319-323
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Konferensbidrag (refereegranskat)abstract
- A crucial challenge in the implementation of distributed massive multiple-input multiple-output (MIMO) architectures is to provide phase coherence while, at the same time, limit the complexity of the remote-radio heads (RRHs), which is important for cost-efficient scalability. To address this challenge, we present in this paper a phase-coherent distributed MIMO architecture, based on off-the-shelf, low-cost components. In the proposed architecture, up- and down-conversion are carried out at the central unit (CU). The RRHs are connected to the CU by means of optical fibers carrying oversampled radio-frequency (RF) 1-bit signals. In the downlink, the 1-bit signal is generated via sigma-delta modulation. At the RRH, the RF signal is recovered from the 1-bit signal through a bandpass filter and a power amplifier, and then fed to an antenna. In the uplink, the 1-bit signal is generated by a comparator whose inputs are the low-noise-amplified received RF signal and a suitably designed dither signal. The performance of the proposed architecture is evaluated with satisfactory results both via simulation and measurements from a testbed.
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| 7. |
- Aaboen, Lise
(författare)
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BATON-CHANGING ON EGGSHELLS – TRANSFERRING SUPPLIER RELATIONSHIPS WHEN MOVING PRODUCTION
- 2014
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Konferensbidrag (refereegranskat)abstract
- Production transfers are a result of outsourcing and offshoring decisions. Though, because ofthe strategic focus of the outsourcing literature have not the operational issues of howrelationship development between sender, receiver and raw material been fully depicted. Thepurpose of the present paper is to explore relationship development connected to transfer ofraw material supplies responsibility during transfer of production. To fulfil the purpose, fourdifferent production transfers were studied: three from Sweden to China, Romania andHungary respectively and one transfer from Holland to Sweden. We can see that thedependence and power shifts gradually between the sender and the receiver and therelationship between them sets the arena for what relationship is developed between thereceiver and the raw material suppliers. Furthermore, short social distances can over bridgecultural and technological distances to some extent, because it motivates to take therelationship into a more developed state.
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| 8. |
- Aaboen, Lise, 1978
(författare)
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Business Incubators as Networks - How and Why?
- 2008
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Ingår i: Proceedings of ECEI 2008 The 3rd European Conference on Entrepreneurship and Innovation. - 9781906638153 ; , s. 1-8
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Konferensbidrag (refereegranskat)
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| 9. |
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| 10. |
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| 11. |
- Aaboen, Lise, 1978, et al.
(författare)
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Technology Transfer Offices, Incubators, and Intellectual Property Management
- 2016
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Ingår i: 76th Annual Meeting of the Academy of Management.
-
Konferensbidrag (refereegranskat)abstract
- In this paper we present a systematic literature review of the intersection between intellectual property (IP) management, technology transfer offices (TTOs) and incubators (and to some degree also science parks) in order to find out how incubators and/or TTOs support and work with patenting and IP management in startups. IP management is an important issue for the competitiveness of technology based startups and a difficult issue due to the resources needed to obtain, monitor and enforce IP rights. Understanding how the support organizations facilitate this work is therefore of importance for the startups as well as for universities and policy actors seeking to support technology transfer. The identified publications were systematized according to the actor in focus and whether the paper discussed IP as an output or as a strategic focus. The literature review showed that this literature tends to adopt a simplistic view of IP management, not taking all strategies into account. The literature typically narrows the focus down to a simplistic view of trying to increase the patent output of TTOs and incubators, and the related firms and/or universities.
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| 12. |
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| 13. |
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| 14. |
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| 15. |
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| 16. |
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| 17. |
- Aaboud, M, et al.
(författare)
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ATLAS Collaboration
- 2019
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Ingår i: XXVIIth International Conference on Ultrarelativistic Nucleus–Nucleus Collisions (Quark Matter 2018). - 0375-9474. ; 982, s. 985-1009
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Konferensbidrag (refereegranskat)
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| 18. |
- Aad, G
(författare)
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Search for charged Higgs bosons in the τ+jets final state using 14.7 fb-1 of pp collision data recorded at √s = 13 TeV with the ATLAS experiment
- 2016
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Konferensbidrag (refereegranskat)abstract
- The experimental observation of charged Higgs bosons, H±, which are predicted by several models with an extended Higgs sector, would indicate physics beyond the Standard Model. This note presents the results of a search for charged Higgs bosons in 14.7 fb−1 of pp collision data at √ s = 13 TeV recorded by the ATLAS detector at the LHC. The search targets the τ+jets channel in top-quark-associated H ± production with a hadronically decaying W boson and τ lepton in the final state. No evidence of a charged Higgs boson is found. For the mass range of mH± = 200 − 2000 GeV, upper limits are set on the production cross section of the charged Higgs boson with the subsequent decay H± → τν in a range of 2.0 − 0.008 pb.
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| 19. |
- Aadland, Torgeir, et al.
(författare)
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The gender gap in entrepreneurship: The role of the relative pay off from entrepreneurship
- 2022
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Ingår i: RENT Proceedings. - 2219-5572. ; 2022
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Konferensbidrag (refereegranskat)abstract
- Objectives Entrepreneurship education garners increasing interest, with current trends showing a greater number of women applying. However, less is known about how attendees experience the use of their education post-education in general, in regard to the relative pay-off in graduates’ subsequent careers. Similarly, the extent to which applied entrepreneurial competencies gained may differentiate in careers of women compared to men is also understudied. Research on the distinct gender populations, focusing on occupational differences have limited space in literature. The objective of this paper is to investigate the career metrics in income and work-life balance, comparing and contrasting a population of entrepreneurship education graduates, along gender lines. Literature review Literature points an underlying gender bias in entrepreneurship, where opportunity-based entrepreneurial careers and self-concept of an entrepreneur has predominantly been studied from a male perspective. For example, studies have highlighted aspects of gender bias towards women engaging in opportunity-based entrepreneurship such as difficulty in obtaining necessary funding for growth, challenges in accessing entrepreneurial networks, lower levels of self-belief and self-efficacy regarding entrepreneurial activity, differences in education, and imbalance in work expectations relative to home life. However, these studies have predominantly focused on a new firm formation definition of entrepreneurship. The utilization of entrepreneurial competencies, as developed through entrepreneurship education that focuses on experience- and reflection-based approaches to learning, have in recent studies shown to be equally important for intrapreneurs as self-employed entrepreneurs. This reflects the broader contextual spread of applied entrepreneurial competence in graduate careers. The entrepreneurial careers of the female graduates who engage in ideation and implementation of new business activity after an entrepreneurship education, may it be in firm formation or in employed roles, remains understudied. Therefore, the question is raised: What is the relative pay-off (i.e., income and work-life balance) of entrepreneurship in relation to occupational choice and gender for graduates of entrepreneurship educations? Approach/Method Alumni from three master-level venture creation programs at three universities in Northern Europe were contacted for this study. From a total population of 1103 (graduating between 1997-2018),531 graduates responded, resulting in a response rate of 48.1 percent. The gender distribution in the total population is 28.5 percent female, and within the respondent sample it is 29.5 percent female. Two dimensions of career progress: income and work-life balance, was then analyzed with a set of dependent variables and control variables in ordinal regression. These regressors include career start-up experience and to what extent ideation and implementation of new business activity in employed occupations impacts the independent variables. Models are based on separate regressions on men and women with the purpose to highlight gendered differences in career progression and what regressors contributes to this. Results/Findings The findings were divided into separate sets by the two dependent variables, income and work-life balance. For income levels, career length is shared by both men and women as being a strong predictor. Beyond that, the regression analysis gives different versions for women and men of what contributes to a high income. Men in paid employment (as conventional employees or intrapreneurs) earns more than their self-employed and hybrid (combining employment and self-employment) peers. For women, there is no significant differences among the occupations. For both genders, type of industry is also influential towards the income level. Work-life balance generated regressions that points towards small influences of the regressors for women. For men, having a partner indicates a higher work-life balance, which is not significant for women. Also, having less work related to entrepreneurial competencies (i.e., being conventional employed), results in a more positive work-life balance. Value & Implications Entrepreneurship education is shown to have many positive impacts on subsequent careers. However, entrepreneurial competencies developed through education do not appear to counteract the general gender differences seen in society, as differentiation between male and female graduates is evident through the study. Where previous research has focused on studying these differences, this study instead focuses on how income and work-life balance unfolds across gender categories of venture creation program graduates. These programs have shown to produce graduates who have developed and later utilized entrepreneurial competencies to a high degree in both employed and self-employed contexts. Though in the subsequent careers, the progression of income and work-life balance falls under different mechanisms depending on the gender of the graduate. Women seems to have more stable progression compared to men, with less variation between occupations. Though a limitation lies within that the regressors builds lesser models for women compared to men. This indicates that future research should consider an expanded set of variables or focus on designing qualitative studies target towards career progression of female entrepreneurs. In conclusion this study informs the need to consider the entrepreneurial career progression of women as different compared to their male graduates.
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| 20. |
- Aagaard, Annabeth, et al.
(författare)
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Creating and capturing sustainable value through business model and service innovation
- 2018
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Konferensbidrag (refereegranskat)abstract
- A number of researchers and practitioners emphasize the potentials of creating value through sustainable business models. However, little attention has been paid as to how sustainable value is created and implemented into the organization and how sustainable value is perceived by the customers. This research gap is explored empirically through a case study of active facilitation and implementation of sustainable business models as experience internally and externally among two hotels’ employees and customers. The findings reveal different key control mechanisms in sustainable value creation and value capture through sustainable business models and sustainable service innovation. The managerial implications of creating and implementing sustainable business models in ways that are perceived sustainable by customer, stress the need for employee engagement, customer involvement, and targeted and personal communication educating internal and external sustainability ambassadors.
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| 21. |
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| 22. |
- Aagerup, Ulf, 1969-, et al.
(författare)
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How image and awareness relates to internal and external stakeholders' acceptance of B2B rebranding
- 2023
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Konferensbidrag (refereegranskat)abstract
- The acquisitions of brands by companies have become more frequent, representing a significant and effective way for firms to reach international new markets. This recent trend has led to a rise in rebranding, particularly in the business-to-business (B2B) sector. Since marketing literature primarily focuses on B2C brand strategies, literature on the field constantly overlooks B2B characteristics. This is sorely needed, because, despite massive investments, many acquisitions fail, especially international acquisitions where one faces cross-country differences. This is unsurprising because most companies' M&A considerations do not place much weight on brand strategy, and brand equity is typically not handled very well but is often treated as an after-thought compared to more pressing financial matters (e.g. how rebranding affects stock returns) and operational matters (e.g. descriptions of enablers and barriers to the rebranding process). Previous studies in this field emphasise how to do rebranding. However, they treat the brand itself as a black box —it is only how you execute the B2B rebranding process that is investigated, not which dimensions of the customer's brand knowledge should be prioritised. This is unfortunate, because rebranding an acquired brand without an idea of the desired end result is like navigating without a destination —even if you execute well, you will most likely not end up where you need to be. This paper addresses this gap by providing insights into the significant factors that drive B2B rebranding strategies, focusing on the transfer of brand equity from the acquired B2B brand to the acquiring company's brand.This study was conducted in one B2B firm going through rebranding process in the life science sector. Getinge was founded in 1904 in Sweden and is a global medical technology firm. The company provides equipment and systems in the healthcare and life sciences sector and has become a global leader in the field of Surgical Workflow. The international growth has been possible through incorporating new innovative offerings. These have been both internally developed, but also acquired internationally. A significant number of international acquisitions have been made throughout the years. In 2021 the company employed over 10,000 people worldwide, with products marketed in over 135 countries.Besides being one of the most valued companies in the sector, Getinge was chosen since the firm has initiated a rebranding process after a long-time international growth strategy, including acquisitions of many different international brands. Moreover, since B2B companies commonly rely on corporate, rather than product branding. Getinge is an appropriate choice since this study, therefore, focuses on a company that uses the same name for its company and its products.By examining an in-depth single case study of a multinational B2B company in the life sciences industry, this paper contributes to the research in international rebranding by validating that brand equity is a relevant consideration for B2B rebranding processes. Specifically, it argues that brand awareness transfer plays an essential role during the rebranding process, especially when it comes to external branding. Customers generally accept the new brand if the value proposition remains unchanged. However, they need to be made aware of the change to avoid confusion. Internally by contrast, the most significant challenge seems to be the transfer of brand image. Awareness is easy; during a rebranding process employees immediately become aware of the change. They however exhibit strong opinions for or against rebranding depending on their emotional connections to the old brand.These results extend the theory on international rebranding after M&As by demonstrating that the B2B context requires different prioritizations than consumer goods rebranding. The study shows how various stakeholders respond throughout the rebranding process. Firms can plan their rebranding process in mind that both brand image and brand awareness are important for brand equity during the rebranding process. However, firms need to prioritise one over the other depending on their specific audience (internal and external). Moreover, the realisation that awareness is a crucial success factor in B2B rebranding might help companies leverage brand equity in international M&As.
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| 23. |
- Aagerup, Ulf, 1969-
(författare)
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Intermediate Luxury Fashion : Brand Building via Fat Discrimination
- 2016
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Ingår i: 11th Global Brand Conference. - Saltaire, UK : Greenleaf Publishing. ; , s. 23-28
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Konferensbidrag (refereegranskat)abstract
- Purpose: The purpose of this paper is to investigate if intermediate luxury fashion brands discriminate overweight and obese consumers.Design/methodology/approach: 1,454 intermediate luxury garments were tallied and measured in-store in London. The physical sizes of the garments were matched to the body sizes of the population, and a gap analysis was carried out in order to determine whether the supply of clothes match the relative importance of each market segment.Findings: While previous research shows that mass-market fashion companies do not discriminate overweight and obese consumers, intermediate luxury garments come in very small sizes compared to the individuals that make up the population.Research limitations/implications: The findings show that purveyors of intermediate luxury fashion limit assortments of garments so they avoid fat typical user imagery.Practical implications: Companies that market products that are sensitive to the typical user imagery can optimize their brands by limiting undesirable customer types access to their brands, provided that 1) they have the financial strength to reject customers whose image would be detrimental to the brand, 2) the companies are active in an industry in which people would tolerate customer rejection, and 3) they sell a product that actually can be denied undesirable customers.Social implications: The study shows that fat consumers are relegated to mass-market fashion but are excluded from intermediate luxury fashion. This constitutes a social inequality.Originality/value: The result of this study provides quantitative evidence that companies control assortments to exclude undesirable typical user imagery. It also delineates under which conditions they do it. This adds to the theory of user imagery.
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| 24. |
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| 27. |
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| 28. |
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| 29. |
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| 30. |
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| 31. |
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| 32. |
- Aagesen, Peter Tolstrup, et al.
(författare)
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Personality of Interaction : Expressing Brand Personalities Through Interaction Aesthetics
- 2015
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Ingår i: 34th annual Chi Conference On Human Factors in Computing Systems, Chi 2016. - New York, NY, USA : ACM Digital Library. ; , s. 3126-3130
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Konferensbidrag (refereegranskat)abstract
- Practicing designers must usually relate to branding in some manner. A designed artifact must support the brand in a constructive way and help establish positive brand experiences, which in turn have strategic value for the brand's institution. While there is obvious application of visual branding knowledge to the visual form of interactive artifacts, interviews with expert practitioners reveal a lack of systematic means to craft an interaction aesthetic to support a brand. Our empirical study relates attributes of interactive experience to that of 'brand personality', a common way of quantifying how a brand should be perceived. We show that particular attributes of interactivity, such as whether an interaction has a continuous rather than discrete flow, are related to particular brand traits. Our empirical results establish a clear commercial significance for deeper, systematic ways of analyzing and critiquing interactive experiences.
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| 33. |
- Aakhus, Mark, et al.
(författare)
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Digital Innovation as Design of Digital Practice : Doctors as Designers in Healthcare
- 2018
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Ingår i: Proceedings of the 51st Hawaii International Conference on System Sciences (HICSS). - 9780998133119 ; , s. 4594-4601
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Konferensbidrag (refereegranskat)abstract
- Medical professionals are increasingly assuming the role of maker and creator. At the same time, digital innovations, as part of evolving information infrastructures, are becoming increasingly prevalent in healthcare. In this paper, we adopt a Schönian approach to understand how a medical professional, who is not an IS designer by trade, engages in the design of digital practice - turning what may appear as a failed digital innovation effort into a successful design of digital practice. Our inquiry suggests three pragmatic principles that call for further investigation: (a) professionals can make a significant contribution to design work by inventing means for fact-based, reflective engagement with the situation; (b) the reorganization of work practice involves organizational design, information system design, and communication design; and (c) developing design as digital practice entails the development of fact-based design practice and must engage practical theories.
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| 34. |
- AAl Abdulsalam, Abdulrahman, et al.
(författare)
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UtahBMI at SemEval-2016 Task 12 : Extracting Temporal Information from Clinical Text
- 2016
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Ingår i: Proceedings of the 10th International Workshop on Semantic Evaluation (SemEval-2016). - : Association for Computational Linguistics. ; , s. 1256-1262
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Konferensbidrag (refereegranskat)abstract
- The 2016 Clinical TempEval continued the 2015 shared task on temporal information extraction with a new evaluation test set. Our team, UtahBMI, participated in all subtasks using machine learning approaches with ClearTK (LIBLINEAR), CRF++ and CRFsuite packages. Our experiments show that CRF-based classifiers yield, in general, higher recall for multi-word spans, while SVM-based classifiers are better at predicting correct attributes of TIMEX3. In addition, we show that an ensemble-based approach for TIMEX3 could yield improved results. Our team achieved competitive results in each subtask with an F1 75.4% for TIMEX3, F1 89.2% for EVENT, F1 84.4% for event relations with document time (DocTimeRel), and F1 51.1% for narrative container (CONTAINS) relations.
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| 35. |
- Aalberg, Asbjørn Lein, et al.
(författare)
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Preconditions for Learning from Fires in Norway : Structural, Cultural, Technological, Interactional and Relational Aspects
- 2021
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Ingår i: Proceedings of the 31st European Safety and Reliability Conference. - Singapore : Research Publishing Services. - 9789811820168 ; , s. 1747-1754
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Konferensbidrag (refereegranskat)abstract
- Learning from incidents is widely accepted as a core part of safety management. This is also true for fires – however few fires in Norway are investigated. Fires are interesting incidents conceptually due to their potential of devastating outcomes on material and human lives and because they happen across all sectors and industries, businesses, and homes. In Norway, several different actors play a role in investigating and learning from fires, from the fire rescue services to directorates and Non-Governmental Organisations. The present study seeks to understand the preconditions for learning from fires in Norway, with emphasis on the formal actors that play a role in preventing and mitigating fires. Methodologically, the study is based on qualitative interviews conducted with relevant actors from first responders, authorities, and other sectors. We found that there are structural, cultural, technological, and relational aspects that seem to influence learning from fires in Norway. The results were analyzed using thematic analysis and the Pentagon model framework. The findings are discussed in relation to theories from organisational learning and learning from incidents.
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| 36. |
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| 37. |
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| 38. |
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| 39. |
- Aalipour, Mojgan, et al.
(författare)
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Identification of Factors affecting Human performance in Mining Maintenance tasks
- 2014
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Ingår i: Proceedings of the 3rd international workshop and congress on eMaintenance. - Luleå : Luleå tekniska universitet. - 9789174399721 - 9789174399738 ; , s. 71-76
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Konferensbidrag (refereegranskat)abstract
- This paper investigates the factors affecting humanperformance in maintenance task in mining sector. Theobjective is identify various factors and to classify them asdriving (strong driving power and weak dependence) anddependent factors (weak driving power and strongdependence). The factors were identified through literaturesurvey and are ranked using mean score of data questionnaire.The reliability of measures is pretested by applyingCronbach’s alpha coefficient to responses to a questionnairegiven to maintenance personnel. The interrelationshipsbetween human factors have been recognized by interpretivestructural modeling (ISM). Further, these factors have beenclassified using matrice d'impacts croises-multiplicationappliqué à un classement (MICMAC) analysing. This casestudy will figure out the factors affecting human performancefor deriving maintenance management insights to improveproductivity in the mining sector. Further, this understandingmay be helpful in framing the policies and strategies formining industry. Temperature, lighting, documentation,communication and fitness are driving factors. Moreover,Work layout, tools availability, complex tasks, time pressure,safety, boss decisions, training, fatigue and motivation havestrong driving power as well as high dependencies and itcomes under the category of linkage factors.
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| 40. |
- Aalipour, Mojgan, et al.
(författare)
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Work place factors effect on maintainability in challenging operating conditions
- 2015
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Ingår i: 2015 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM). - Piscataway, NJ : IEEE Communications Society. - 9781467380669 - 9781467380669 ; , s. 767-771
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Konferensbidrag (refereegranskat)abstract
- Some industries such as mining industry create complex and challenging work place for maintenance crews. For example in an underground mine, for some machines, heavy maintenance tasks must be performed on site in a limited workspace in a harsh environment, including dust and improper illumination. Such operating conditions can increase the health, safety, and environment (HSE) risk, reduce the availability of the machines and increase the life cycle cost of equipment. A review of current mining equipment design and maintenance procedure confirms that considerable reduction in HSE risk, as well as substantial cost savings, can be achieved by considering human factors. This study discusses the effect of workplace factors on the maintainability of mining equipment. It presents the results from questionnaires on the effect of work place factors on maintainability performance given to maintenance staff at two mines, one in northern Sweden and the other in Iran.
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| 41. |
- Aalto, Susanne, 1964
(författare)
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Astrochemistry and star formation in nearby galaxies: From galaxy disks to hot nuclei
- 2016
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Ingår i: EAS Publications Series. - : EDP Sciences. - 1633-4760 .- 1638-1963. - 9782759820221 ; 75-76, s. 73-80
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Konferensbidrag (refereegranskat)abstract
- Studying the molecular phase of the interstellar medium in galaxies is fundamental for the understanding of the onset and evolution of compact and extended star formation, and of the growth of supermassive black holes. Molecular line emission is an excellent tracer of chemical, physical and dynamical conditions in the cold neutral gas. Key molecules in extragalactic studies are e.g. HCN, HCO+, HC3N, SiO, CH3OH, H2O. Furthermore, we can use IR excited molecular emission to probe the very inner regions of luminous infrared galaxies allowing us to get past the optically thick dust barrier of the compact obscured nuclei where lines of CO, HCN and HCO+ in their vibrational ground state (?=0) may be self-absorbed. Finally, molecular outflows and their chemistry are briefly discussed-including new ALMA results on for example the outflow of the lenticular galaxy NGC1377 and a study of the chemistry of the outflow of the quasar Mrk231.
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| 42. |
- Aalto, Susanne, 1964
(författare)
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Chemistry in luminous AGN and starburst galaxies
- 2008
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Ingår i: Proceedings of "Science with the Atacama Large Millimeter Array", eds. R. Bachiller and J. Cernicharo, Madrid, 13-17 Nov 2006, Springer. - 9781402069345 ; , s. 273-278
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Konferensbidrag (refereegranskat)
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| 43. |
- Aalto, Susanne, 1964
(författare)
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Chemistry in the Dense Molecular Gas of Starburst Galaxies and AGNs
- 2006
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Ingår i: In "Astrochemistry: Throughout the Universe: Recent Successes and current Challenges". Proc. of 31st Symp. of the IAU, Pacific Grove, California, Sept. 2005, eds. D.C. Lis, G.A. Blake, E. Herbst, Cambridge University Press. ; , s. 261-270
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Konferensbidrag (refereegranskat)
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| 44. |
- Aalto, Susanne, 1964
(författare)
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Galaxies and Galaxy Nuclei: From Hot Cores to Cold Outflows
- 2015
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Ingår i: 4th ALMA Science Conference on Revolution in Astronomy with ALMA: The Third Year, Tokyo, Japan, 8-11 December. - 9781583818831 ; 499, s. 85-93
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Konferensbidrag (refereegranskat)abstract
- Studying the molecular phase of the interstellar medium in galaxies is fundamental for the understanding of the onset and evolution of star formation and the growth of supermassive black holes. We can use molecules as observational tools exploiting them as tracers of chemical, physical and dynamical conditions. In this short review, key molecules (e.g. HCN, HCO+, HNC, HC3N, CN) in identifying the nature of buried activity and its evolution are discussed including some standard astrochemical scenarios. Furthermore, we can use IR excited molecular emission to probe the very inner regions of luminous infrared galaxies (LIRGs) allowing us to get past the optically thick dust barrier of the compact obscured nuclei. We show that the vibrationally excited lines are important probes of nuclei where lines of CO, HCN and HCO+ in their vibrational ground state (v=0) may be self-absorbed. Finally, molecular outflows are briefly discussed-including the new ALMA discovery of a highly collimated (jet-like) reversed molecular outflow in the lenticular, extremely radio-quiet galaxy NGC1377.
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| 45. |
- Aalto, Susanne, 1964
(författare)
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Molecular Gas and Starformation in Interacting Galaxies
- 2004
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Ingår i: in Proceedings of "The Neutral ISM in Starburst Galaxies", Marstrand, June 2003, eds. Aalto S., Huettemeister S., Pedlar A., Astron. Soc. of the Pac. Conf. Series, San Francisco. - 1583811826 ; , s. 3-18
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Konferensbidrag (refereegranskat)
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| 46. |
- Aalto, Susanne, 1964
(författare)
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Molecules as tracers of galaxy evolution
- 2012
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Ingår i: Proceedings of the International Astronomical Union. - 1743-9213 .- 1743-9221. ; 8:5287, s. 199-208
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Konferensbidrag (refereegranskat)abstract
- Studying the molecular phase of the interstellar medium in galaxies is fundamental for the understandingof the onset and evolution of star formation and the growth of supermassive black holes. Wecan use molecules as observational tools exploiting them as tracers of chemical, physical and dynamicalconditions. In this short review, key molecules (e.g. HCN, HCO+, HNC, HC3N, CN, H3O+) in identifyingthe nature of buried activity and its evolution are discussed including some standard astrochemical scenarios.Furthermore, we can use IR excited molecular emission to probe the very inner regions of luminousinfrared galaxies (LIRGs) allowing us to get past the optically thick dust barrier of the compact obscurednuclei, e.g. in the dusty LIRG NGC4418. High resolution studies are often necessary to separate effectsof excitation and radiative transport from those of chemistry - one example is absorption and effects ofstimulated emission in the ULIRG Arp220. Finally, molecular gas in large scale galactic outflows is brieflydiscussed.
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| 47. |
- Aalto, Susanne, 1964, et al.
(författare)
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OH megamaser emission in the outflow of the luminous infrared galaxy Zw049.057
- 2022
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Ingår i: Proceedings of the International Astronomical Union. - 1743-9213 .- 1743-9221. ; 18, s. 40-44
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Konferensbidrag (refereegranskat)abstract
- High resolution (0.”26 × 0.”13 (70 × 35 pc)) L-band (18 cm) OH megamaser (OHM) e-Merlin observations of the LIRG Zw049.057 show that the emission is emerging from a low velocity outflowing structure - which is foreground to a fast, dense and collimated molecular outflow detected by ALMA. The extremely dusty compact obscured nucleus (CON) of Zw049.057 has no (or only little) OHM emission associated with it - possibly because of too high number densities that quench the OHM. In contrast we detect 6 cm H2CO emission primarily from the CON-region. We suggest that the OHM-region of Zw049.057 is not directly associated with star formation, but instead occurs in a wide-angle, slow outflow that surrounds the fast and dense outflow. The OHM is pumped by IR emission that likely stems from activities in the nucleus. We briefly discuss how OHM emission can be used as a probe of LIRG-CON galaxies.
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| 48. |
- Aalto, Susanne, 1964
(författare)
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Probing Molecular Gas Properties in Starbursts and AGNs
- 2005
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Ingår i: in Proceedings of “The Evolution of Starbursts”, Bad Honnef 16-20 August 2004, AIP Conference Proceedings, American Institute of Physics. - 0735402701 ; :783, s. 123-134
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Konferensbidrag (refereegranskat)
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| 49. |
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| 50. |
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