Flexible Products for Dynamic Preferences

2019 ◽  
Vol 28 (6) ◽  
pp. 1558-1576 ◽  
Author(s):  
Aydın Alptekinoğlu ◽  
Karthik Ramachandran
Keyword(s):  
Flexible Products ◽  
Dynamic Preferences

Flexible Products for Dynamic Preferences

2012 ◽  
Author(s):  
Aydin Alptekinoglu ◽  
Karthik Ramachandran
Keyword(s):  
Flexible Products ◽  
Dynamic Preferences

Torsion Failures in Handling Operations for Power Cables, Umbilicals and Flexible Pipes

2021 ◽  
Author(s):  
Philippe Mainçon ◽  
Vegard Longva
Keyword(s):  
Failure Modes ◽  
Compressive Load ◽  
Qualitative Description ◽  
Power Cables ◽  
Knowledge Gaps ◽  
The Past ◽  
Flexible Pipes ◽  
Systematic Nomenclature ◽  
Component Failures ◽  
Flexible Products

Abstract Over the past 10 years, SINTEF has investigated, or been informed about, a range of torsion failures in cables, umbilicals or flexible pipes. These failures have occurred while the flexible products were being transported along a route during production, loadout, installation. One failure occured during operation. There are no guidelines on how to minimize the risk of such failures. This may be attributed to a lack of knowledge in the industry about the mechanisms that cause torsional moments to appear. Further, some buckling patterns of the components of a flexible product under excessive torsion, closely resemble patterns caused by excessive bending or compressive load, so that some torsion-induced failures are wrongly attributed. Hence, there is a need to increase the knowledge and awareness of torsion failures in the industry. Previous papers by the authors have considered some of the mechanisms that lead to the appearance of torque in handling operations. The present paper is a continuation which focuses on torque-induced failure modes. It begins by providing a systematic nomenclature for the description of torsion kinematics. It then provides a qualitative description of known torque-induced failure modes. The literature provides some models for torque-induced failures, as well as models of component failures due to excessive bending or compression of the flexible product, which are also relevant for the study of torsion. These are reviewed, and their relevance to torsion-induced failures are discussed. Knowledge gaps and challenges are highlighted.

scholarly journals Modelling of Bi-Directional Spatio-Temporal Dependence and Users’ Dynamic Preferences for Missing POI Check-In Identification

2019 ◽  
Vol 33 ◽  
pp. 5458-5465 ◽  
Author(s):  
Dongbo Xi ◽  
Fuzhen Zhuang ◽  
Yanchi Liu ◽  
Jingjing Gu ◽  
Hui Xiong ◽  
...  
Keyword(s):  
Large Scale ◽  
Real Life ◽  
Location Prediction ◽  
Temporal Dependence ◽  
Great Opportunity ◽  
Mobility Data ◽  
Proposed Model ◽  
Poi Recommendation ◽  
Spatio Temporal ◽  
Dynamic Preferences

Human mobility data accumulated from Point-of-Interest (POI) check-ins provides great opportunity for user behavior understanding. However, data quality issues (e.g., geolocation information missing, unreal check-ins, data sparsity) in real-life mobility data limit the effectiveness of existing POIoriented studies, e.g., POI recommendation and location prediction, when applied to real applications. To this end, in this paper, we develop a model, named Bi-STDDP, which can integrate bi-directional spatio-temporal dependence and users’ dynamic preferences, to identify the missing POI check-in where a user has visited at a specific time. Specifically, we first utilize bi-directional global spatial and local temporal information of POIs to capture the complex dependence relationships. Then, target temporal pattern in combination with user and POI information are fed into a multi-layer network to capture users’ dynamic preferences. Moreover, the dynamic preferences are transformed into the same space as the dependence relationships to form the final model. Finally, the proposed model is evaluated on three large-scale real-world datasets and the results demonstrate significant improvements of our model compared with state-of-the-art methods. Also, it is worth noting that the proposed model can be naturally extended to address POI recommendation and location prediction tasks with competitive performances.

Dynamic control mechanisms for revenue management with flexible products

2010 ◽  
Vol 37 (11) ◽  
pp. 2027-2039 ◽  
Author(s):  
Anita Petrick ◽  
Jochen Gönsch ◽  
Claudius Steinhardt ◽  
Robert Klein
Keyword(s):  
Revenue Management ◽  
Dynamic Control ◽  
Control Mechanisms ◽  
Flexible Products

Time Series Geographic Social Network Dynamic Preference Group Query

2021 ◽  
Vol 13 (4) ◽  
pp. 18-39
Author(s):  
Yinglian Zhou ◽  
Jifeng Chen
Keyword(s):  
Time Series ◽  
Social Network ◽  
Social Impact ◽  
Network Models ◽  
User Preferences ◽  
Network Dynamic ◽  
Tree Index ◽  
Query Algorithm ◽  
Value Model ◽  
Dynamic Preferences

Driven by experience and social impact of the new life, user preferences continue to change over time. In order to make up for the shortcomings of existing geographic social network models that often cannot obtain user dynamic preferences, a time-series geographic social network model was constructed to detect user dynamic preferences, a dynamic preference value model was built for user dynamic preference evaluation, and a dynamic preferences group query (DPG) was proposed in this paper . In order to optimize the efficiency of the DPG query algorithm, the UTC-tree index user timing check-in record is designed. UTC-tree avoids traversing all user check-in records in the query, accelerating user dynamic preference evaluation. Finally, the DPG query algorithm is used to implement a well-interacted DPG query system. Through a large number of comparative experiments, the validity of UTC-tree and the scalability of DPG query are verified.

scholarly journals Ultrahigh electrical conductivity in solution-sheared polymeric transparent films

2015 ◽  
Vol 112 (46) ◽  
pp. 14138-14143 ◽  
Author(s):  
Brian J. Worfolk ◽  
Sean C. Andrews ◽  
Steve Park ◽  
Julia Reinspach ◽  
Nan Liu ◽  
...  
Keyword(s):  
High Performance ◽  
Optoelectronic Device ◽  
Consumer Electronics ◽  
Transparent Conductors ◽  
Transparent Films ◽  
Device Integration ◽  
Electrical Conductivities ◽  
Specific Control ◽  
Flexible Products ◽  
Deposition Conditions

With consumer electronics transitioning toward flexible products, there is a growing need for high-performance, mechanically robust, and inexpensive transparent conductors (TCs) for optoelectronic device integration. Herein, we report the scalable fabrication of highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) thin films via solution shearing. Specific control over deposition conditions allows for tunable phase separation and preferential PEDOT backbone alignment, resulting in record-high electrical conductivities of 4,600 ± 100 S/cm while maintaining high optical transparency. High-performance solution-sheared TC PEDOT:PSS films were used as patterned electrodes in capacitive touch sensors and organic photovoltaics to demonstrate practical viability in optoelectronic applications.

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