LLukas22/scidocs huggingface dataset:
Joint TDOA and FDOA Estimation: A Conditional Bound and Its Use for Optimally Weighted Localization

Modern passive emitter-location systems are often based on joint estimation of the time-difference of arrival (TDOA) and frequency-difference of arrival (FDOA) of an unknown signal at two (or more) sensors. Classical derivation of the associated Cramér-Rao bound (CRB) relies on a stochastic, stationary Gaussian signal-model, leading to a diagonal Fisher information matrix with respect to the TDOA and FDOA. This diagonality implies that (under asymptotic conditions) the respective estimation errors are uncorrelated. However, for some specific (nonstationary, non-Gaussian) signals, especially chirp-like signals, these errors can be strongly correlated. In this work we derive a “conditional” (or a “signal-specific”) CRB, modeling the signal as a deterministic unknown. Given any particular signal, our CRB reflects the possible signal-induced correlation between the TDOA and FDOA estimates. In addition to its theoretical value, we show that the resulting CRB can be used for optimal weighting of TDOA-FDOA pairs estimated over different signal-intervals, when combined for estimating the target location. Substantial improvement in the resulting localization accuracy is shown to be attainable by such weighting in a simulated operational scenario with some chirp-like target signals.
Nicotine patch therapy for smoking cessation combined with physician advice and nurse follow-up. One-year outcome and percentage of nicotine replacement.

OBJECTIVE
To determine the efficacy of a 22-mg nicotine patch combined with the National Cancer Institute program for physician advice and nurse follow-up in providing withdrawal symptom relief, 1-year smoking cessation outcome, and percentage of nicotine replacement.


DESIGN
Randomized, double-blind, placebo-controlled trial.


SUBJECTS
Two-hundred forty healthy volunteers who were smoking at least 20 cigarettes per day.


INTERVENTIONS
Based on the National Cancer Institute program, subjects received smoking cessation advice from a physician. Follow-up and relapse prevention were provided by a study nurse during individual counseling sessions. Subjects were randomly assigned to 8 weeks of a 22-mg nicotine or placebo patch.


MAIN OUTCOME MEASURES
Abstinence from smoking was verified by expired air carbon monoxide levels. Withdrawal symptoms were recorded during patch therapy, and the percentage of nicotine replacement was calculated by dividing serum nicotine and cotinine levels at week 8 of patch therapy by levels obtained while smoking.


RESULTS
Higher smoking cessation rates were observed in the active nicotine patch group at 8 weeks (46.7% vs 20%) (P < .001) and at 1 year (27.5% vs 14.2%) (P = .011). Higher smoking cessation rates were also observed in subjects assigned to the active patch who had lower serum levels of nicotine and cotinine at baseline, and withdrawal symptom relief was better in the active patch group compared with placebo.


CONCLUSIONS
Clinically significant smoking cessation can be achieved using nicotine patch therapy combined with physician intervention, nurse counseling, follow-up, and relapse prevention. Smokers with lower baseline nicotine and cotinine levels had better cessation rates, which provides indirect evidence that they had more adequate nicotine replacement with this fixed dose of transdermal nicotine than those smokers with higher baseline levels.
Industrial districts ’ evolution and technological regimes : Italy and Taiwan

This paper investigates some plausible models of evolution of industrial districts (IDs) and clusters in light of the peculiar current features of technology and technological change. An insightful explanation of the variety of possible evolution of industrial clusters is provided focusing on the concept of ‘ technological regime s’. Within this interpretative framework, the authors carried out original field studies and survey questionnaires in Italy and Taiwan to gather microeconomic evidence on the restructuring efforts and sources of competitiveness of selected smalland medium-sized enterprises (SMEs). The shift in the technological paradigm, that applies to all sectors, requires a substantial industrial reorganisation. Firms traditionally operating within industrial districts need to reorganise their knowledge linkages from a cluster-based approach to a global and broader approach. A key explanation of the success of SMEs competing in globalized high-tech industries, supported by our survey evidence, is the co-evolution of domestic and international knowledge linkages. Inter-firm and inter-institution linkages need to be built to provide local SMEs with the necessary externalities to cope with the dual challenge of knowledge creation and internationalisation. In Taiwan, this took the form of global production networks.  2003 Elsevier Science Ltd. All rights reserved. JEL classification:O32; O33; R12
Network-Coding-Assisted Data Dissemination via Cooperative Vehicle-to-Vehicle/-Infrastructure Communications

Vehicle-to-vehicle/vehicle-to-infrastructure (referred to as V2X) communications have potential to revolutionize current road transportation systems with respect to vehicle safety, transportation efficiency, and travel experience. This paper puts the first effort on applying network coding in cooperative V2X communication environments to improve bandwidth efficiency and enhance data service performance. Specifically, we investigate new arising challenges on network-coding-assisted data dissemination by considering both communication constraints and application requirements in vehicular networks. We present the system model and give an insight into the characteristics of cooperative data dissemination with network coding. On this basis, we formulate the problem and propose a network-coding-assisted scheduling algorithm to enable the hybrid of vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications and exploit their joint effects on providing efficient data services. We design a cache strategy that allows vehicles to retrieve their unrequested data items. This strategy not only increases the opportunity of data sharing among vehicles but also gives higher probability of packet decoding, which in turn enhances the data service performance. We give an intensive analysis on the scheduling overhead, which shows the scalability of the algorithm. Finally, we build the simulation model and conduct a comprehensive performance evaluation to demonstrate the superiority of the proposed solution.
Factors influencing the usage intention of mHealth apps

Technology has taken over tasks that were originally carried out by professionals in all different kinds of industries and sectors ranging from self-check in at airports to money transfer via mobile devices. In the healthcare sector the internet has become one main information resource for health-related issues and with the introduction of mobile devices such as smartphones the mHealth market has evolved. With help of mHealth applications (mHealth apps) patients can actively participate in maintaining their health and take over tasks usually fulfilled by health professionals. Despite the advantages of mHealth apps in practice, the download numbers are decreasing and the academic world has not paid much attention to the end-users point of view. The purpose of this paper is to identify factors influencing end-users in their intention to use mHealth apps. In order to answer this research question a quantitative research design has been chosen. The data is collected with help of an online self-completion questionnaire and statistical analysis with the software SPSS. Time and Perceived Usefulness were two out of five factors that had an influence on the end-users intention to use mHealth apps. A key finding of this study is that the mHealth app market is still in its early stage and end-users lack knowledge about it. This paper contributes to theory as well as to practice by providing new research directions for the academic world and insights for app developers and marketers to adapt their marketing strategies in order to meet the customers’ needs.
Scripts, Plans and Knowledge

"Of what a strange nature is knowledge! It clings to the mind, when it has once seized on it, like a lichen on the rock," Abstract We describe a theoretical system intended to facilitate the use of knowledge In an understand­ ing system. The notion of script is introduced to account for knowledge about mundane situations. A program, SAM, is capable of using scripts to under­ stand. The notion of plans is introduced to ac­ count for general knowledge about novel situa­ tions. I. Preface In an attempt to provide theory where there have been mostly unrelated systems, Minsky (1974) recently described the as fitting into the notion of "frames." Minsky at­ tempted to relate this work, in what is essentially language processing, to areas of vision research that conform to the same notion. Mlnsky's frames paper has created quite a stir in AI and some immediate spinoff research along the lines of developing frames manipulators (e.g. Bobrow, 1975; Winograd, 1975). We find that we agree with much of what Minsky said about frames and with his characterization of our own work. The frames idea is so general, however, that It does not lend itself to applications without further specialization. This paper is an attempt to devel­ op further the lines of thought set out in Schank (1975a) and Abelson (1973; 1975a). The ideas pre­ sented here can be viewed as a specialization of the frame idea. We shall refer to our central constructs as "scripts." II. The Problem Researchers in natural language understanding have felt for some time that the eventual limit on the solution of our problem will be our ability to characterize world knowledge. Various researchers have approached world knowledge in various ways. Winograd (1972) dealt with the problem by severely restricting the world. This approach had the po­ sitive effect of producing a working system and the negative effect of producing one that was only minimally extendable. Charniak (1972) approached the problem from the other end entirely and has made some interesting first steps, but because his work is not grounded in any representational sys­ tem or any working computational system the res­ triction of world knowledge need not critically concern him. Our feeling is that an effective characteri­ zation of knowledge can result in a real under­ standing system in the not too distant future. We expect that programs based on the theory we out­ …
Computational Web intelligence and granular Web intelligence for Web uncertainty

This paper presents a general overview of basic techniques of computational Web intelligence and granular Web intelligence for Web applications with uncertainty. Web uncertainty has different types such as Web probability, Web fuzziness, Web randomness, etc. A granular set, a general set for dealing with uncertainty, is defined to handle Web data uncertainty. The future work on hybrid Web intelligence is briefly introduced.
Perspectives of Radio over Fiber Technologies

Radio-over-fiber technologies enable efficient provisioning of broadband wireless services both in access and in in-building networks, in particular when combined with flexible optical routing and dispersion-robust RoF transport techniques, such as optical frequency multiplying.
The Rate Monotonic Scheduling Algorithm: Exact Characterization and Average Case Behavior

deadlines all of the time if the rate monotonic algorithm is used and the total utilization is not greater than .693. This paper presents an exact characterization of the ability of the rate monotonic scheduling algorithm to meet the Liu and Layland [3] also found that the optimal dynamic deadlines of a periodic task set. In addition, a stochastic scheduling algorithm was the nearest deadline algorithm. analysis is presented which gives the probability This algorithm was shown to have a worst case bound of distribution of the breakdown utilization of randomly 1.OOO. Consequently, it can meet all the deadlines of all generated task sets. It is shown that as the task set size periodic tasks up to full processor utilization. In spite of increases, the task computation times become of little the apparent dominance of the nearest deadline algorithm importance, and the breakdown utilization converges to a over the rate monotonic algorithm, the rate monotonic constant determined by the task periods. For uniformly algorithm is of great practical importance [l, 2,5,6,103. distributed tasks, a breakdown utilization of 88% is a First, it can be used to ensure that the timing requirements reasonable characterization of the breakdown utilization of the most important tasks are met when a transient level. An interesting case is presented in which the overload occurs. Second, it provides a convenient way to average case breakdown utilization reaches the worst case offer fast response times to aperiodic tasks while still Liu and Layland lower bound. meeting the deadlines of the periodic tasks using the deferrable server algorithm [2], the sporadic server algorithm [lo] or the extended priority exchange algorithm [8]. Third, it can be modified to handle task
Effects of postmortem injection time, injection level, and concentration of calcium chloride on beef quality traits.

Two experiments were conducted to determine the optimum protocol for maximizing meat quality with CaCl2 injection. Experiment 1 compared the effects of 30 min or 24 h postmortem injection of 175 mM CaCl2 or water at 10% (wt/wt) to controls on various measures of meat quality. An injection of CaCl2 reduced (P < .05) shear force values in all three beef muscles evaluated (longissimus, semimembranosus, and triceps brachii). Retail lean color was not affected (P > .05) by a CaCl2 injection at 24 h postmortem, but was slightly darker (P < .05) for an injection at 30 min postmortem. Psychrophilic and total aerobic microbial counts were higher (P < .05) in 30-min than in 24-h treatments and were higher (P < .05) in CaCl2- or water-injected semimembranosus muscle than in the control, but the treatment differences were minimal in 24-h injected meat. Experiment 2 compared the effects of 24-h postmortem injection of 200 mM or 250 mM CaCl2 at either 5 or 10% (wt/wt) to controls on meat quality traits. Both 200 and 250 mM CaCl2 reduced (P < .05) shear force values compared with the control. In addition, variation in shear force was decreased (P < .05) with CaCl2 injection. Beef flavor intensity was slightly lower (P < .05) and off-flavor ratings were slightly higher (P < .05) in CaCl2-injected meat, but the small differences were of no practical significance. Retail lean color was not affected (P > .05) by injection of the CaCl2 at 24 h. Injecting 200 mM CaCl2 at 5% (wt/wt) into 24 h postmortem meat can produce consistently tender meat without compromising other palatability or lean quality traits.
Combining multiple matchers for a high security fingerprint verification system

Integration of various ®ngerprint matching algorithms is a viable method to improve the performance of a ®ngerprint veri®cation system. Dierent ®ngerprint matching algorithms are often based on dierent representations of the input ®ngerprints and hence complement each other. We use the logistic transform to integrate the output scores from three dierent ®ngerprint matching algorithms. Experiments conducted on a large ®ngerprint database con®rm the eectiveness of the proposed integration scheme. Ó 1999 Published by Elsevier Science B.V. All rights reserved.
Thyroglossal Duct Cyst Papillary Carcinoma

Thyroglossal duct cysts are usually located in the midline of the neck. The coexistence of carcinomas in thyroglossal duct cysts is extremely rare, with most being papillary carcinomas. Usually, the diagnosis is only made postoperatively after excision of the cyst. Although the Sistrunk procedure is often regarded as adequate, controversies exist concerning the need for thyroidectomy depending on histopathological findings. We report the case of a 31-year-old man diagnosed with papillary carcinoma within a thyroglossal duct cyst, who underwent total thyroidectomy as has been recommended for differentiated papillary cancer.
Paclitaxel-ifosfamide-cisplatin as salvage chemotherapy in ovarian cancer patients pretreated with platinum compounds and paclitaxel.

BACKGROUND
The role of combination chemotherapy regimens in the management of ovarian cancer patients with tumors previously exposed to platinum compounds and paclitaxel has not yet been defined. The present phase II study evaluated the activity and toxicity of a paclitaxel-ifosfamide-cisplatin combination in the aforementioned group of patients. Given the in vitro and in vivo synergism between these three agents, it was believed that using a three drug combination would overcome tumor resistance to cisplatin.


PATIENTS AND METHODS
Thirty-five patients were enrolled in the study. The median age was 55 and the median performance status 1. Thirteen (37%) had potentially platinum sensitive, 12 (35%) had primary platinum-resistant and 10 (28%) patients had secondary platinum-resistant tumors. Treatment consisted of paclitaxel 175 mg/m2 as a 3 h i.v. infusion on day 1, cisplatin 75 mg/m2 i.v. over 2 h fractionated over days 1 and 2, and ifosfamide 5 mg/m2 i.v. over 1 h fractionated on days 1-2 with mesna uroprotection. Courses were administered every 3 weeks on an outpatient basis. Granulocyte-colony stimulation factor (G-CSF) was given at a dose of 5 microg/kg/day on days 4-10. A median of 4 cycles were administered with the delivered dose intensity at 85% of the planned dose for the three agents.


RESULTS
Among 35 patients evaluable for response and toxicity, there were 10 partial responses with a response rate of 28.6% (95% confidence interval 12%-45%). Stable disease was recorded in 9 (25.7%) and progressive disease in 16 (45.7%) patients. Subgroup analysis revealed a response rate of 38.5% in potentially platinum-sensitive, 16.5% in primary platinum-resistant and 30% in secondary platinum-resistant tumors. The median response duration was 5 months (range 3-14 months), the median time to progression 6 months (range 3-18 months) and the median survival 12 months (range 3-44 months). Myelotoxicity was significant with neutropenia grade 3 and 4 occurring in 35% and 45% of patients, respectively. Eight episodes (5% of all cycles) of febrile neutropenia were documented and well managed with oral or i.v. antibiotics and G-CSF continuation until complete recovery. Grade 1, 2 and 3 peripheral neuropathy developed in 30%, 30% and 10% of patients, respectively. In conclusion, the three drug combination demonstrated a significant effectiveness in potentially platinum-sensitive tumors and a moderate efficacy in platinum-resistant tumors. The regimen, although myelotoxic, is tolerable with G-CSF support. Further investigation via comparative studies is required to define any superiority of the present regimen over doublets of the three agents in this group of patients.
Characteristics associated with physical activity among independently ambulant children and adolescents with unilateral cerebral palsy.

AIM
This study aimed to quantify the contribution of physical, personal and environmental characteristics to physical activity among independently ambulant children with unilateral cerebral palsy (CP).


METHOD
One-hundred and two children with unilateral CP (52 males, 50 females; 52 right hemiplegia; mean age 11y 3mo, range 8-17y [SD 2y 4mo]) classified at Gross Motor Function Classification System (GMFCS) levels I = 44 and II = 58 participated. Physical activity was measured over 4 days using ActiGraph accelerometers recording as activity counts. GMFCS, functional strength, 6-minute walk test (6MWT), mobility limitations (MobQues28), age, sex, Assessment of Life-Habits recreation domain, Participation and Environment Measure for Children and Youth (PEM-CY) and environmental characteristics were considered for selection in a linear regression model. These served as independent variables which were determined using a backwards selection procedure.


RESULTS
Younger age, male sex, increased performance on the 6MWT, and increased participation in the home and community measured using the PEM-CY were significantly associated with activity counts (p<0.001). However, the model fit was somewhat weak (R(2) =0.32), indicating that much of the variation was unexplained. Older age and reduced community participation were associated with high inactivity (p<0.001).


INTERPRETATION
Physical activity interventions should primarily target adolescents and females. Walking endurance and participation in the home and community may represent modifiable characteristics to increase physical activity.
A practical approach for applying best practices in behavioural interventions to injury prevention

Behavioural science when combined with engineering, epidemiology and other disciplines creates a full picture of the often fragmented injury puzzle and informs comprehensive solutions. To assist efforts to include behavioural science in injury prevention strategies, this paper presents a methodological tutorial that aims to introduce best practices in behavioural intervention development and testing to injury professionals new to behavioural science. This tutorial attempts to bridge research to practice through the presentation of a practical, systematic, six-step approach that borrows from established frameworks in health promotion and disease prevention. Central to the approach is the creation of a programme theory that links a theoretically grounded, empirically tested behaviour change model to intervention components and their evaluation. Serving as a compass, a programme theory allows for systematic focusing of resources on the likely most potent behavioural intervention components and directs evaluation of intervention impact and implementation. For illustration, the six-step approach is applied to the creation of a new peer-to-peer campaign, Ride Like a Friend/Drive Like You Care, to promote safe teen driver and passenger behaviours.
ASSESSING THE IMPACT OF INVESTMENT IN TRANSPORT INFRASTRUCTURE ON REGIONAL DEVELOPMENT

The OECD project reported in this paper examined a series of ex-poste case studies to explore the relationship between investment in transport infrastructure and regional development. The key variables considered by the Working Group included those included under traditional benefit-cost analysis, as well as broader socio-economic objectives such as employment, accessibility, social cohesion, etc. Regrettably, there were few examples of ex-ante and ex-poste case studies available to assess whether or not the benefits expected from infrastructure projects were achieved in terms of the initial objectives set for the project. There is a need for research to understand how expected positive impacts can be realised and negative unintended impacts can be avoided (ie. attracting resources to a region and drawing resources away from it). The research was undertaken by an OECD Working Group under the direction of the author while Principal Administrator of the OECD Programme of Research on Road Transport and Intermodal Linkages. 1 This paper is based on research conducted at the OECD, Paris. It was undertaken during my role as Principal Administrator of the Programme of Research on Road Transport and Intermodal Linkages. The views expressed in this paper are those of the author and do not necessarily represent those of the Bureau of Transport and Regional Economics. The usual caveats apply. Contact author Dr Anthony Ockwell Department of Transport and Regional Services GPO Box 594, Canberra ACT 201 Tel: 02-62747004 Email: anthony.ockwell@dotars.gov.au