يعرض 1 - 10 نتائج من 499 نتيجة بحث عن '"Allen, Julian"', وقت الاستعلام: 0.71s تنقيح النتائج
  1. 1
    دورية أكاديمية

    المؤلفون: Hunter, Samuel T. (ORCID 0000-0002-2036-7681), Blocker, Lily D. (ORCID 0000-0003-4354-1897), Gutworth, Melissa B., Allen, Julian

    المصدر: Journal of Creative Behavior. Jun 2023 57(2):199-220.

    تمت مراجعته من قبل الزملاء: Y

    Page Count: 22

    مستخلص: Although organizations say new ideas are desirable, investing in original products rather than the "tried and true" can be unsettling for decision-makers. This discomfort may be due, in part, to uncertainty surrounding whether a new idea will prove successful. As such, the originality of a creative idea can be paradoxically viewed both as an asset, driving up appeal, as well as a detrimental risk. To help unpack these relationships, we propose that how an original idea is proposed (i.e., pitched) plays a central role in the support it receives. Guided by signaling theory we examined how pitch quality relates to funding for ideas with varying degrees of originality. In a field sample of 245 Kickstarter crowdfunding campaigns, pitch quality for ideas high in originality predicted investment in such ideas. In a follow-up experimental study, we created high- and low-quality pitches for two products, also varying product originality and product quality. Results highlight the importance of high-quality pitches for highly original ideas that are associated with reductions in uncertainty. Supplemental analyses suggest that high-quality pitches improve enthusiasm for a product as well, highlighting a potential second path of support influence.

    Abstractor: As Provided

  2. 2
    رسالة جامعية

    المؤلفون: Allen, Julian Icarus

    الوصف: In the context of marine ecosystem modelling an emergent property occurs when patterns or properties arise from the interaction of lower level properties, none of which exhibit it. This thesis takes a retrospective view of a series model studies to demonstrate the ability of the European Regional Seas Ecosystem Model (ERSEM) to produce emergent properties. The studies chosen fall into three main categories: emergent community structure in response to environmental forcing, community response the anthropogenic perturbation and whether the ecosystem can amplify a weak atmospheric signal. The model is found to demonstrate weak emergence in the sense of generating patterns at a higher lever of organisation (e.g. community structure, phytoplankton succession) generated by the underlying agents. However there is little evidence that intrinsic emergence is produced. The adequacy ERSEM and other current modelling approaches for creating emergence is discussed and suggestions made for new directions in which may better capture the emergent properties of marine ecosystems. It is suggested that more emphasise is placed on underlying mechanism of cell physiology and foodweb interactions and less on empirical or numerical parameter fitting. Ultimately there is a need to think differently and more creatively about how marine ecosystems are modelled

  3. 3
    دورية

    المؤلفون: Browne, MichaelAllen, Julian

    المصدر: Logistics Spectrum. Jul-Aug 1997 31(4):12-15

    مصطلحات موضوعية: LOGISTICS, ENVIRONMENT, COMMERCE

    الوصف: illus bibliog

  4. 4
    دورية أكاديمية

    الوصف: Based on the insights derived from practical trials conducted with carriers operating in London, this article proposes a last-mile delivery model that involves both driving and walking. A particularly innovative aspect of the model is the shared use of a third-party portering service between the carriers as an enabler to collaborative provision, and shared micro-consolidation points for temporary storage of goods. The model gives rise to a complex routing problem, for which a tabu search algorithm is developed. The algorithm is able to suggest vehicle routes that consolidate parcels in shared locations and porter paths that deliver items from various companies, reducing the overall delivery cost. We applied this algorithm to a manifest dataset obtained from two carriers operating in London. The results from the model suggested that sharing a third party portering service for the last-mile delivery element between the rival carriers in the case study reduced overall transport costs by up to 14%.

    وصف الملف: text

    العلاقة: https://eprints.soton.ac.uk/478660/1/Improving_last_mile_parcel_delivery_through_shared_consolidation_and_portering_Accepted_JORS.pdfTest; https://eprints.soton.ac.uk/478660/2/Revised_Online_Appendix.pdfTest; Lamas Fernandez, Carlos, Martinez-Sykora, Antonio, Mcleod, Fraser, Bektas, Tolga, Cherrett, Tom and Allen, Julian (2023) Improving last-mile parcel delivery through shared consolidation and portering: a case study in London. Journal of the Operational Research Society. (doi:10.1080/01605682.2023.2231095 ).

  5. 5
    دورية أكاديمية

    المصدر: MULTIMODAL TRANSPORTATION ; ISSN: 2772-5871 ; ISSN: 2772-5863

    الوصف: Logistics outsourcing is a practice commonly used by firms to allow them to access capabilities that they lack internally. Although the main drivers of outsourcing in general are fairly well known, the question of what explains logistics outsourcing decisions within the UK pharmaceutical manufacturing industry, in particular, remains under-researched. Therefore, this study aims to bridge the aforementioned gap in the literature. We surveyed 49 drug manufacturers located in the UK using a web-based questionnaire. The data collected were analysed using logistics regression, exploratory factor analysis, and t-tests. We found that UK drug manufacturers regard improving quality and reliability and reducing logistics costs as the most significant reasons for outsourcing logistics services. We also found a direct positive relationship between the service provider's techno-commercial offerings and delivery performance, and the likelihood of being selected to provide these services. We further explored materials transportation, product delivery, research and development, and clinical trials, which are among the most frequently outsourced logistics activities in the UK pharmaceutical manufacturing industry. The study contributes to the wider literature on logistics outsourcing, and more specifically to that on the UK pharmaceutical manufacturing industry. Findings from this research can also be used to guide outsourcing practitioners’ decisions about the selection of logistics service providers. In addition, the study can help to enhance the service providers' understanding of why firms buy logistics services and which services they are likely to buy.

    وصف الملف: application/pdf

  6. 6
    دورية أكاديمية

    المساهمون: University of Westminster, University of Southampton, Lancaster University, University College London

    الوصف: Growth in e-commerce has led to increasing use of light goods vehicles for parcel deliveries in urban areas. This paper provides an insight into the reasons behind this growth and the resulting effort required to meet the exacting delivery services offered by e-retailers which often lead to poor vehicle utilisation in the last-mile operation, as well as the duplication of delivery services in urban centres as competitors vie for business. A case study investigating current parcel delivery operations in central London identified the scale of the challenge facing the last-mile parcel delivery driver, highlighting the importance of walking which can account for 62% of the total vehicle round time and 40% of the total round distance in the operations studied. The characteristics of these operations are in direct conflict with the urban infrastructure which is being increasingly redesigned in favour of walking, cycling and public transport, reducing the kerbside accessibility for last-mile operations. The paper highlights other pressures on last-mile operators associated with managing seasonal peaks in demand; reduced lead times between customers placing orders and deliveries being made; meeting delivery time windows; first-time delivery failure rates and the need to manage high levels of product returns. It concludes by describing a range of initiatives that retailers and parcel carriers, sometimes in conjunction with city authorities, can implement to reduce the costs associated with last-mile delivery, without negatively impacting on customer service levels. ; The authors gratefully acknowledge the EPSRC for funding this work through its financial support of Freight Traffic Control 2050 (www.ftc2050.com), EPSRC Grant Reference: EP/N02222X/1. ; accepted version from https://discovery.ucl.ac.uk/id/eprint/10043064/1/final260617.pdfTest

    العلاقة: https://www.sciencedirect.com/science/article/abs/pii/S136192091730305XTest; Allen J, Piecyk M, Piotrowska M, McLeod F, Cherrett T, Ghali K, Nguyen T, Bektas T, Bates O, Friday A, Wise S, Austwick M (2017) 'Understanding the impact of e-commerce on last-mile light goods vehicle activity in urban areas: the case of London', Transportation Research Part D: Transport and Environment, 61 (B), pp.325-338.; http://hdl.handle.net/10547/626000Test; Transportation Research Part D: Transport and Environment

  7. 7
    دورية أكاديمية

    الوصف: Last-mile delivery operations are complex, and the conventional way of using a single mode of delivery (e.g. driving) is not necessarily an efficient strategy. This paper describes a two-level parcel distribution model that combines walking and driving for a single driver. The model aims to minimise the total travelling time by scheduling a vehicle’s routing and the driver’s walking sequence when making deliveries, taking decisions on parking locations into consideration. The model is a variant of the Clustered Travelling Salesman Problem with Time Windows, in which the sequence of visits within each cluster is required to form a closed tour. When applied to a case study of an actual vehicle round from a parcel carrier operating in London, savings of over 20% in the total operation time were returned over the current situation where 144 parcels were being delivered to 57 delivery locations. ; The authors gratefully acknowledge the EPSRC for funding this work through its financial support of Freight Traffic Control 2050 (www.ftc2050.com), EPSRC Grant Reference: EP/N02222X/1. ; full text from https://eprints.lancs.ac.uk/id/eprint/134508/1/Manuscript_submitted_1st_revision.pdfTest

    العلاقة: Nguyen TBT, Bektas T, Cherrett TJ, McLeod FN, Allen J, Bates O, Piotrowska M, Piecyk M, Friday A, Wise S (2019) 'Optimising parcel deliveries in London using dual-mode routing', Journal of the Operational Research Society, 70 (6), pp.998-1010.; http://hdl.handle.net/10547/626002Test; Journal of the Operational Research Society

  8. 8
    دورية أكاديمية
  9. 9
    دورية أكاديمية

    المصدر: Journal of the Operational Research Society; Jun2024, Vol. 75 Issue 6, p1043-1054, 12p

    مصطلحات موضوعية: DELIVERY of goods, TABU search algorithm

    مصطلحات جغرافية: LONDON (England)

    مستخلص: Based on the insights derived from practical trials conducted with carriers operating in London, this article proposes a last-mile delivery model that involves both driving and walking. A particularly innovative aspect of the model is the shared use of a third-party portering service between the carriers as an enabler to collaborative provision, and shared micro-consolidation points for temporary storage of goods. The model gives rise to a complex routing problem, for which a tabu search algorithm is developed. The algorithm is able to suggest vehicle routes that consolidate parcels in shared locations and porter paths that deliver items from various companies, reducing the overall delivery cost. We applied this algorithm to a manifest dataset obtained from two carriers operating in London. The results from the model suggested that sharing a third party portering service for the last-mile delivery element between the rival carriers in the case study reduced overall transport costs by up to 14%. [ABSTRACT FROM AUTHOR]

    : Copyright of Journal of the Operational Research Society is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

  10. 10
    دورية أكاديمية

    المصدر: Neurology. 87(7_Supplement_1)

    الوصف: ObjectivePlexiform neurofibromas (PNs) are complex, benign nerve sheath tumors that occur in approximately 25%-50% of individuals with neurofibromatosis type 1 (NF1). PNs that cause airway compromise or pulmonary dysfunction are uncommon but clinically important. Because improvement in sleep quality or airway function represents direct clinical benefit, measures of sleep and pulmonary function may be more meaningful than tumor size as endpoints in therapeutic clinical trials targeting airway PN.MethodsThe Response Evaluation in Neurofibromatosis and Schwannomatosis functional outcomes group reviewed currently available endpoints for sleep and pulmonary outcomes and developed consensus recommendations for response evaluation in NF clinical trials.ResultsFor patients with airway PNs, polysomnography, impulse oscillometry, and spirometry should be performed to identify abnormal function that will be targeted by the agent under clinical investigation. The functional group endorsed the use of the apnea hypopnea index (AHI) as the primary sleep endpoint, and pulmonary resistance at 10 Hz (R10) or forced expiratory volume in 1 or 0.75 seconds (FEV1 or FEV0.75) as primary pulmonary endpoints. The group defined minimum changes in AHI, R10, and FEV1 or FEV0.75 for response criteria. Secondary sleep outcomes include desaturation and hypercapnia during sleep and arousal index. Secondary pulmonary outcomes include pulmonary resistance and reactance measurements at 5, 10, and 20 Hz; forced vital capacity; peak expiratory flow; and forced expiratory flows.ConclusionsThese recommended sleep and pulmonary evaluations are intended to provide researchers with a standardized set of clinically meaningful endpoints for response evaluation in trials of NF1-related airway PNs.

    وصف الملف: application/pdf