Supporting working time interruption management through persuasive design

Indiana University-Purdue University Indianapolis (IUPUI)Knowledge workers often suffer productivity loss because of unsuccessful interruption handling, which can lead to even more detrimental behaviors like "cyber-slacking" and procrastination. Many of the interruption management techniques proposed in the research literature focus on minimizing interruption occurrences. However, given the inevitability of internal and external interruptions in everyday life, it may be more practical to help people regulate how they respond to interruptions using persuasive technologies. The aim of this dissertation is to explore and evaluate the design of persuasive computer agents that encourage information workers to resume interrupted work. Based on a systematic review of interruptions in the workplace, theories of self-regulation, and theories guiding the design of persuasive technologies, this dissertation describes the creation of a prototype research platform, WiredIn. WiredIn enables researchers to explore a variety of interruption resumption support strategies on desktop computers. Two empirical studies that investigate the efficacy, attributes, and consequences of applying the paradigms embodied in WiredIn in controlled and real-life working environments are presented here. Both studies validate the effect of persuasive interventions on improving interruption management behaviors; the second study also provides design suggestions that can inform future work in supporting interruption management and multitasking

Ultrafast Optical Signal Processing with Bragg Structures

The phase, amplitude, speed, and polarization, in addition to many other properties of light, can be modulated by photonic Bragg structures. In conjunction with nonlinearity and quantum effects, a variety of ensuing micro- or nano-photonic applications can be realized. This paper reviews various optical phenomena in several exemplary 1D Bragg gratings. Important examples are resonantly absorbing photonic structures, chirped Bragg grating, and cholesteric liquid crystals; their unique operation capabilities and key issues are considered in detail. These Bragg structures are expected to be used in wide-spread applications involving light field modulations, especially in the rapidly advancing field of ultrafast optical signal processing.Comment: To be published in a special issue of journal Applied Sciences, on the topic of Guided-Wave Optic

A Comprehensive Survey on Vector Database: Storage and Retrieval Technique, Challenge

A vector database is used to store high-dimensional data that cannot be characterized by traditional DBMS. Although there are not many articles describing existing or introducing new vector database architectures, the approximate nearest neighbor search problem behind vector databases has been studied for a long time, and considerable related algorithmic articles can be found in the literature. This article attempts to comprehensively review relevant algorithms to provide a general understanding of this booming research area. The basis of our framework categorises these studies by the approach of solving ANNS problem, respectively hash-based, tree-based, graph-based and quantization-based approaches. Then we present an overview of existing challenges for vector databases. Lastly, we sketch how vector databases can be combined with large language models and provide new possibilities

The Quantitative Description of Tight Sand Reservoir Fracture in Sulige Gas Field

The Sulige gas field is a typical tight sand reservoir, Ordos Basin, the fracture development degree directly affects the development of the natural gas, especially affects the volume fracturing effect of horizontal well and the deliverability of the natural gas, the appropriate method to describe the fracture is very important. At present, outcrop, core and FIM are general methods to describe the fracture development degree, but they have inherent shortages. In the Sulige gas field, a few of cores and poor representativeness can not illustrate the fracture distribution in well bore, and imaging logging data are especially absent. Su53 gas field was used as an example in the Sulige gas field, during the research of the fracture, based on fractal theory, through using the amplitude difference data between deep investigate double lateral resistivity (Rd) and shallow investigate double lateral resistivity (Rs), and other conventional logging data, in combination with the response characteristics of  fracture in the logging curve, reservoir fracture was quantitatively identified by the analysis method of R/S, the relationship between fractal dimension value and fracture density was quantitatively analyzed , the vertical heterogeneity of fracture distribution was analyzed, and the relationship between fractal dimension value of fracture and initial deliverability of gas well was researched. The results which were tested by the data of drilling cores and productions available, indicate that the method of R/S is feasible to quantitatively describe the fracture development degree; the relationship between fractal dimension value and fracture density is positively relative, fractal dimension value is bigger, the fracture is more developed; there is a good corresponding relationship between fractal dimension value and deliverability of gas well, fractal dimension value decreases with a decrease of deliverability.Key words: Fractal; R/S analysis; Logging curve; Tight sand reservoir fracture; Fracture descriptio