scholarly journals The stochastic filtering problem: a brief historical account

2014 ◽  
Vol 51 (A) ◽  
pp. 13-22 ◽  
Author(s):  
Dan Crisan

Onwards from the mid-twentieth century, the stochastic filtering problem has caught the attention of thousands of mathematicians, engineers, statisticians, and computer scientists. Its applications span the whole spectrum of human endeavour, including satellite tracking, credit risk estimation, human genome analysis, and speech recognition. Stochastic filtering has engendered a surprising number of mathematical techniques for its treatment and has played an important role in the development of new research areas, including stochastic partial differential equations, stochastic geometry, rough paths theory, and Malliavin calculus. It also spearheaded research in areas of classical mathematics, such as Lie algebras, control theory, and information theory. The aim of this paper is to give a brief historical account of the subject concentrating on the continuous-time framework.

2014 ◽  
Vol 51 (A) ◽  
pp. 13-22
Author(s):  
Dan Crisan

Onwards from the mid-twentieth century, the stochastic filtering problem has caught the attention of thousands of mathematicians, engineers, statisticians, and computer scientists. Its applications span the whole spectrum of human endeavour, including satellite tracking, credit risk estimation, human genome analysis, and speech recognition. Stochastic filtering has engendered a surprising number of mathematical techniques for its treatment and has played an important role in the development of new research areas, including stochastic partial differential equations, stochastic geometry, rough paths theory, and Malliavin calculus. It also spearheaded research in areas of classical mathematics, such as Lie algebras, control theory, and information theory. The aim of this paper is to give a brief historical account of the subject concentrating on the continuous-time framework.


No other talent process has been the subject of such great debate and emotion as performance management (PM). For decades, different strategies have been tried to improve PM processes, yielding an endless cycle of reform to capture the next “flavor-of-the-day” PM trend. The past 5 years, however, have brought novel thinking that is different from past trends. Companies are reducing their formal processes, driving performance-based cultures, and embedding effective PM behavior into daily work rather than relying on annual reviews to drive these. Through case studies provided from leading organizations, this book illustrates the range of PM processes that companies are using today. These show a shift away from adopting someone else’s best practice; instead, companies are designing bespoke PM processes that fit their specific strategy, climate, and needs. Leading PM thought leaders offer their views about the state of PM today, what we have learned and where we need to focus future efforts, including provocative new research that shows what matters most in driving high performance. This book is a call to action for talent management professionals to go beyond traditional best practice and provide thought leadership in designing PM processes and systems that will enhance both individual and organizational performance.


2021 ◽  
Vol 7 (1) ◽  
pp. 231-255
Author(s):  
David Cardona

Abstract Roman Malta has been the subject of numerous historical and archaeological studies since the seventeenth century. However, the lack of documented excavations and the restricted number of sites – particularly those within the boundaries of the two main Roman towns – meant that numerous grey areas persist in our understanding of the islands under Roman rule, regardless of how many studies have been done so far. This article attempts to provide an overview of past works, studies and a discussion of the known consensus on knowledge of sites, populations and economies. This in an attempt to provide a clear picture of what we know (and what we do not) about Roman Malta. Finally, I will comment on current and new research and projects which are being carried out by various local entities and foreign institutions to enhance our knowledge of this very important historic era for the Maltese islands. This culminates into a proposal for the use of a predictive model that may help us identify new sites and, consequently, provide new data on this phase.


2021 ◽  
Vol 13 (4) ◽  
pp. 1932 ◽  
Author(s):  
Reza Kiani Mavi ◽  
Denise Gengatharen ◽  
Neda Kiani Mavi ◽  
Richard Hughes ◽  
Alistair Campbell ◽  
...  

This paper aims to identify the major research concepts studied in the literature of sustainability in construction projects. Two bibliometric analysis tools—(a) BibExcel and (b) Gephi, were used to analyze the bibliometrics indices of papers and visualize their interrelations as a network, respectively. Therefore, a research focus parallelship network (RFPN) analysis and keyword co-occurrence network (KCON) analysis were performed to uncover the primary research themes. The RFPN analysis clustered the studies into three major categories of evaluating sustainability, project management for sustainability, and drivers of sustainable construction. The KCON analysis revealed that while each paper had a different focus, the underlying concept of all clusters was sustainability, construction, and project management. We found that while ‘sustainability’ was the leading keyword in the first cluster, i.e., evaluating sustainability, it was the second top keyword with the eigenvector centrality of over 0.94 in the other two clusters. We also found that the concept of sustainability should be included in construction projects from the early stages of design and feasibility studies and must be monitored throughout the project life. This review showed that previous researchers used a variety of statistical and mathematical techniques such as structural equation modelling and fuzzy decision-making methods to study sustainability in construction projects. Using an integrated approach to identifying the research gaps in this area, this paper provides researchers with insights on how to frame new research to study sustainability in construction projects.


Parasitology ◽  
2009 ◽  
Vol 136 (12) ◽  
pp. 1643-1652 ◽  
Author(s):  
D. P. McMANUS

SUMMARYThis review discusses 5 of my earliest papers on the biochemistry of larvalEchinococcuspublished inParasitologyin the 1970s and 1980s. Two of the publications consider aspects of the basic biochemistry, intermediary metabolism and the regulation of respiratory pathways inE. granulosusandE. multilocularis, and emphasize the existence of inter- and intra-species variation in their general metabolism. The third reports on the detailed biochemical analysis of the tegumental surface of the protoscolex ofE. granulosus, and the final 2 papers describe the genomic cloning ofEchinococcusDNA fragments and their use, along with other DNA markers, in molecular identification ofE. granulosusisolates collected worldwide from areas endemic for hydatid disease. A number of years have elapsed since these publications inParasitologyand, in this Centenary Issue article, I reflect briefly on some of the subsequent studies undertaken in these research areas that have advanced the field. As well, I provide brief insight on new research directions, emphasizing the impact of molecular biology and associated techniques on future studies ofEchinococcusand hydatid disease.


2009 ◽  
Vol 21 (1) ◽  
pp. 3-18 ◽  
Author(s):  
Jacob G. Birnberg

ABSTRACT: I argue that the time has come for management accounting researchers to again consider the orientation of our research. Over the past several decades, the focus of research in management accounting has evolved. Initially, research was heavily influenced by the needs of practice. After the Ford Foundation's initiative to professionalize business education, research became more and more theoretical and inward-facing. At a time when practice is in need of assistance, our current focus has led to research that is primarily intended to enhance current models rather than assist in solving the problems of practice. After arguing that there is a need for a change, I offer several examples of new research areas where management accounting research could assist practice.


2017 ◽  
Vol 6 (5) ◽  
pp. 256
Author(s):  
Alexander A. Zaitsev ◽  
Natalia V. Antonova

<p>The tradition of studying Spanish Renaissance in Russia is quite a complicated phenomenon, which requires a detailed analysis. The main questions which arise when referring to the issue are those of developmental patterns and interdisciplinary aspect of the letter. Spanish Renaissance culture is traditionally the subject to scrutiny for historians, philologists and art historians. The present article aims to outline a preliminary picture of interdisciplinary interaction, which gained momentum in the Soviet period of Russian Hispanism. Special attention is paid to the imminent figures of Spanish Renaissance historiography, as well as their ideas and concepts. The evolution of Spanish Renaissance studies is described against the background of the principal research areas. The present paper will be of interest to both intellectual historians and scholars investigating Renaissance and medieval history.</p>


2019 ◽  
Vol 2 (2) ◽  
pp. 59-68
Author(s):  
Sutantri Sutantri

One of the effective treatments for patients recovering from acute cardiac illness or surgery is cardiac rehabilitation (CR). CR has proven to be effective to reduce mortality, morbidity, and also to improve the quality of life. The purpose of this review is to present the current status of CR program worldwide as well as to identify a potential approach for further investigation. Literature searching of electronic databases was conducted in several databases including CINAHL, MEDLINE, PsycINFO, and EMBASE, and Google Scholar. CR aims to restore patients with CVD to a state of good health. Each country has different approach in the provision and organization of CR as well as the allocation of resources, which depends on their health policies and politics. The indications for CR also differ between countries, but traditionally CR has been used following acute myocardial infarction (MI). CR programs have been divided into three phases of progression. Hospital-based or supervised site-based programs have been known as the most common model of CR in most countries. The core components of CR include patient assessment, nutritional counselling, exercise training, physical activity counselling, weight management, tobacco cessation, aggressive coronary risk-factor management, and psychosocial management. Despite the apparent benefits of CR in patients with CVD, these programs remain largely underused. The participation rates in the USA, Australia, and Europe are low, estimated at 10-30%. New research areas that explore new ways of CR delivery to improve referral and participation rates are essential.


Author(s):  
Ralph Reilly ◽  
Andrew Nyaboga ◽  
Carl Guynes

<p class="MsoNormal" style="text-align: justify; margin: 0in 0.5in 0pt;"><span style="layout-grid-mode: line; font-family: &quot;Times New Roman&quot;,&quot;serif&quot;;"><span style="font-size: x-small;">Facial Information Science is becoming a discipline in its own right, attracting not only computer scientists, but graphic animators and psychologists, all of whom require knowledge to understand how people make and interpret facial expressions. (Zeng, 2009). Computer advancements enhance the ability of researchers to study facial expression. Digitized computer-displayed faces can now be used in studies. Current advancements are facilitating not only the researcher&rsquo;s ability to accurately display information, but recording the subject&rsquo;s reaction automatically.<span style="mso-spacerun: yes;">&nbsp; </span><span style="mso-bidi-font-weight: bold;"><span style="mso-spacerun: yes;">&nbsp;</span></span>With increasing interest in Artificial Intelligence and man-machine communications, what importance does the gender of the user play in the design of today&rsquo;s multi-million dollar applications? Does research suggest that men and women respond to the &ldquo;gender&rdquo; of computer displayed images differently? Can this knowledge be used effectively to design applications specifically for use by men or women? This research is an attempt to understand these questions while studying whether automatic, or pre-attentive, processing plays a part in the identification of the facial expressions.</span></span></p>


2021 ◽  
Vol XII (1 (34)) ◽  
pp. 167-182
Author(s):  
Anna Gaweł

In pedagogical literature health pedagogy is trated as a subdiscipline of pedagogy, within which the theoretical foundations of modern health education are created. It has theoretical support in classical social pedagogy. The subject of research of health pedagogy is interdisciplinary and it covers issues related to a social health reality, which are analyzed from a pedagogical perspective and on the basis of the assumptions of modern philosophy of health and in connection with the achievements of medical and social sciences in the areas related to the protection and promotion of health. The article presents the formation of the theoretical foundations of pedagogical practice focused on health goals and the concepts and methods of practicing health pedagogy that are emerging today.


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