Bücher veröffentlicht von WSPC

This treatise defines humane to mean that which is natural to human beings. It then suggests that much of the economic activity and many of the structures of modern business are inhumane. In response to this possibility, the book examines the nature of the humane in society and business and reviews the literature, beliefs, and standards of human behavior that would lead to the growth of a truly humane economy. Questions are raised about the virtue of current structure and practice. A strikingly positive proposition underlies the critique: new entrepreneurial ventures are by their nature humane. The way to make the economy and the practice of business more humane is not to encourage a routinized script of business ethics but instead to permit entrepreneurs to follow their desire to create and to build. This desire is natural to human beings and therefore deeply humane.

The compendium summarizes the seismic exploration history, geophysical exploration technology progress, application and exploration results of foreland basins and foreland thrust belts in central and western China.The volume highlights the latest progress and exploration results of theories and methods in foreland thrust belts such as Kuqa in Tarim basin, Yingxiongling in Qaidam basin and Longmenshan in Sichuan basin. The technologies presented, such as wide azimuth and high-density 3D seismic acquisition and processing technology, anisotropic depth domain seismic processing technology, theoretical multi-information comprehensive structural modeling technology, multi-dimensional data fracture detection technology, etc, are widely used in complex areas such as foreland thrust belt.This highly illustrated and readable reference text benefits professionals, researchers, teachers and graduate students majoring in oil and gas exploration and development.

Dedicated to the memory of the late Professor Zbigniew Oziewicz from Universidad Nacional Autónoma de México, the book consists of papers on a wide variety of topics related to the work of Professor Oziewicz, which were presented at the special conference on Graph-Operads-Logic (GOL 2021), selected through peer review to promote his scientific legacy.Professor Oziewicz was a great enthusiast and supporter of category theory and its applications in physics, as well as in various areas of mathematics (topology, noncommutative geometry, etc.). In particular, he made significant contributions to the theory of Frobenius algebras, which now are becoming more important due to their connection with topological quantum field theories that are used in mathematical physics and in quantum topology. Professor Oziewicz was a great and very generous teacher, who immersed his students in the beautiful ideas of category theory as well as mathematical physics and computation. It was his idea to start a series of conferences under the title Graphs-Operads-Logic, most of them held in Mexico, with some of them in the USA, which were a great platform to discuss various ideas connected with category theory and its various applications, and to make friends with other scientists. Despite his passing, the GOL 2021 conference is included in this series to pay tribute to his many contributions to diverse areas of science.The book is laid out in twelve main topics where we can find relevant works from distinguished experts.

Thermal energy storage systems constitute an important part of the energy distribution landscape in today's world.This comprehensive compendium covers the development of thermal energy storage, from the most fundamental principles to recent developments and case studies in the field. Key focus is on the context of urban and commercial thermal management such as district cooling and heating systems and decentralised energy systems.State-of-the-art advancements in both academia and industrial applications highlights the current direction of innovation and trends in the field.

How early did the Chinese explore the world? Did the Treasure Fleets, led by Admiral Zheng He, discover many parts of the world before Christopher Columbus? While it is known that Christopher Columbus discovered America and Europe ushered in the Age of Discovery, there is an ongoing debate on the "unknown" areas depicted in Western maps from the period and earlier. There is agreement among scholars that certain areas seem to have been mapped out prior to the arrival of Western explorers.Chinese Global Exploration in the Pre-Columbian Era: Evidence from an Ancient World Map analyses the world's first modern map - known as Kunyu Wanguo Quantu (KWQ) ¿¿¿¿¿¿¿¿ in Chinese, translated as the "Complete Geographical Map of All Kingdoms of the World" to demonstrate evidence of Chinese global exploration in the Pre-Columbian era. The map of concern was first printed by Italian missionary, Matteo Ricci in 1602, and has been purported to be of entirely European origin, based on Ricci's former maps which he had brought to China in 1582.This book, thus, seeks to be transformational in presenting essential new insights on Pre-Columbian world history and Chinese global exploration, moving away from the norm of the studies of geography and cartography by:Analysing the histories of all the geographical terms associated with Australia, New Zealand, Antarctica, Africa, Europe, and the Americas, as depicted in the KWQ, thus demonstrating that these areas were most likely explored by the Chinese since Antiquity;Performing a comparison of KWQ with major European maps and state-of-the-art archaeological discoveries

With speeds of up to 20 gigabits per second and the ability to support up to one million devices per square kilometer, 5G - the current generation of mobile communications technology - may seem impressive, but 6G is set to take these capabilities even further. Envisioned to deliver a peak data rate of 1 terabit per second and latency of 100 microseconds or less, 6G must be able to seamlessly and securely deliver data in an ever increasingly saturated network of wireless connections without exceeding the energy requirements of 5G.This book covers every aspect of future communications, from key technologies, to design challenges, network requirements, and users experiences; to standardization, chip design, and industry applications from 5G to 6G. It presents the requirements and use cases of 6G, RF transceivers roadmap for 2030 and beyond, and modeling of RF devices for 5G/6G applications. In here, a modified Shannon's capacity formula that is critical for future advanced wireless communications such as 6G is discussed for the first time. It also presents the standardization of 6G wireless communication systems with emphasis on Standard Development Organizations (SDOs), regulatory bodies and administrations, ITU, industry forums, and 6G standard timeline. The book presents an RF/mm-wave integrated circuit design for future communications to provides readers with an easy-to-understand overview of voltage-controlled oscillators, power amplifiers, low-noise amplifiers, frequency synthesizers, high-frequency dividers, and chip-to-chip communications isolation technology.This book is an excellent reference for readers specializing in electrical and electronic engineering, wireless communication, integrated circuit design, circuits and systems, to learn more about 5G and even 6G communication standards and RF/mm-wave IC design. In particular, professionals working in the foundry, fabless semiconductor companies, original equipment manufacturers, and integrated device manufacturers will also benefit from this book.

This book addresses the divide that exists between the reality of finance and the image it projects. A functioning financial system is an essential feature of a modern economy, providing it with money, credit, capital, and investments. Conversely, those who provide this essential service are neither respected nor trusted. The causes and consequences of this divide is explored using the British experience from 1800 to the present, drawing upon a mixture of factual evidence and contemporary fiction. Nothing of this scale has been attempted before and this is the product of 50 years of research.

Fourteen years after the first proposal of a fractal theoretical model to understand the dynamics of laser produced plasma, a complete image of the model is projected on a wide range of empirical data related to laser produced plasmas.The book tackles the two sides of laser produced plasmas with experimental data on a wide range of materials, from metallic alloys to geological samples and the associated mathematical model is developed in the multifractal theory of motion. A new perspective is explored in analyzing and interpreting the data collected by electrical or optical methods, focusing especially on the charged particles dynamics and the nature of fractal fluctuations and their influence during measurements as well as to the scattering process and plasma splitting phenomena, all seen through the lens of multifractal physics.The book offers the best presentation of the multifractal theoretical model for the study of transient phenomena in laser produced plasmas, which focus leads to a balanced development of the model showcasing both the flexibility and the unique vision of a multifractal mathematical apparatus.

The electricity sector's reforms aim to modernise its infrastructure, rules, policies, and procedures to allow for more efficiency and for clean energy to have the same playing field in the power competition/wholesale/retail electricity market. This will enable inefficient power to be phased out gradually. Over the past 2 decades, there has been remarkable progress in the Association of Southeast Asian Nations (ASEAN) electricity markets that has increased the electrification ratio substantially; however, it has not achieved free market competition, universal electrification, and emission reduction plans. ASEAN aims to achieve universal access to electricity by 2030.Electricity Market Reforms in ASEAN, China, India, and Japan provides 10 empirical studies investigating and evaluating the electricity market reforms in Southeast Asia, China, India, and Japan. The book analyses the electricity market policy reform plans, market liberalisation, tariff reform, electricity trade, renewable energy integration, resource allocation, and the sustainability of the electricity market in the region and these countries. It provides policy recommendations to foster the reforms and increase market efficiency.

This book is a collection of essays written by Jørgen Ørstrøm Møller since 2015, which focus on the geopolitical, geoeconomics and societal developments of recent times, including the war in Ukraine, Brexit and the future of the European Union, as well as the economic trajectories of the US, China and the UK.With the dissolution of the Soviet Union in 1991, the US emerged as the sole superpower in a new world order. However, the rise of China in the subsequent decades has coincided with the reduced standing and power of the US.Understanding the shift in the global power balance requires an appreciation of the domestic developments in the US and China. On the one hand, the US under the Trump administration had taken a protectionist stance in its trade policies and built walls along its borders to keep out immigrants. On the other hand, the Chinese government has aggressively expanded its economy and posted high economic growth, as part of its efforts to uplift the lives of its people.With the US' economic strength in decline, how long will the incumbent superpower be able to hold on its pole position before being replaced by a challenger? This question and more are addressed in this book.

Quartic anharmonic oscillator with potential V(x)= x² + g²x¿ was the first non-exactly-solvable problem tackled by the newly-written Schrödinger equation in 1926. Since that time thousands of articles have been published on the subject, mostly about the domain of small g² (weak coupling regime), although physics corresponds to g² ~ 1, and they were mostly about energies.This book is focused on studying eigenfunctions as a primary object for any g². Perturbation theory in g² for the logarithm of the wavefunction is matched to the true semiclassical expansion in powers of ¿: it leads to locally-highly-accurate, uniform approximation valid for any g²¿[0,¿) for eigenfunctions and even more accurate results for eigenvalues. This method of matching can be easily extended to the general anharmonic oscillator as well as to the radial oscillators. Quartic, sextic and cubic (for radial case) oscillators are considered in detail as well as quartic double-well potential.

This is the most recently developed book in Spatial Econometrics which cover important models and estimation methods. Its coverage is rather broad, and some of the topics covered have only been developed in the recent econometric literature in spatial econometrics.The book summarizes our devoted efforts on spatial econometrics that represent joint contributions with former PhD advisees from the Ohio State University in Columbus, Ohio, USA.The coverage is comprehensive and there are a total of sixteen chapters from basic statistics and statistical theory of linear-quadratic forms, law of large numbers (LLN) and central limit theory (CLT) on martingales to nonlinear spatial mixing and spatial near-epoch dependence theories, which can justify the statistic inferences for various spatial models and their estimation. New estimation and testing approaches in empirical likelihood and general empirical likelihood, and Bootstrapping are presented. Model selection is also discussed in this book. In addition to the popular spatial autoregressive models, there are chapters on multivariate SAR models, simultaneous SAR models, and panel dynamic spatial models. Recent econometric developments on intertemporal spatial models with rational expectations and flows data in trade theory will also be included. In terms of statistics, classical estimation, testing and inference are the main concerns, and we provide classical inference for the justification of Bayesian simulation approaches.

A P Balachandran has a long and impressive record of research in particle physics and quantum field theory, bringing concepts of geometry, topology and operator algebras to the analysis of physical problems, particularly in particle physics and condensed matter physics. He has also had an influential role within the physics community, not only in terms of a large number of students, research associates and collaborators, but also serving on the editorial boards of important publications, including the International Journal of Modern Physics A.This book consists of articles by students and associates of Balachandran. Most of the articles are scientific in nature, with topics ranging from noncommutative geometry, particle physics phenomenology, to condensed matter physics. Various chapters focus on new perspectives and directions resulting from Balachandran's contributions to physics, as well as some reminiscences of collaborating and working with Balachandran.

This updated compendium provides the linear algebra background necessary to understand and develop linear algebra applications in data mining and machine learning.Basic knowledge and advanced new topics (spectral theory, singular values, decomposition techniques for matrices, tensors and multidimensional arrays) are presented together with several applications of linear algebra (k-means clustering, biplots, least square approximations, dimensionality reduction techniques, tensors and multidimensional arrays).The useful reference text includes more than 600 exercises and supplements, many with completed solutions and MATLAB applications.The volume benefits professionals, academics, researchers and graduate students in the fields of pattern recognition/image analysis, AI, machine learning and databases.

This comprehensive compendium designs deep neural network models and systems for intelligent analysis of fundus imaging. In response to several blinding fundus diseases such as Retinopathy of Prematurity (ROP), Diabetic Retinopathy (DR) and Macular Edema (ME), different image acquisition devices and fundus image analysis tasks are elaborated.From the actual fundus disease analysis tasks, various deep neural network models and experimental results are constructed and analyzed. For each task, an actual system for clinical application is developed.This useful reference text provides theoretical and experimental reference basis for AI researchers, system engineers of intelligent medicine and ophthalmologists.

Super-Speed Rail (SSR) system is the fifth mode of transportation after ships, trains, automobiles and aircrafts, featuring characteristics of ultra-high-speed (1000-2000 km/h), high safety, low energy consumption, low noise, no vibration, no pollution and so on.This unique compendium analyzes its operation principle, system architecture and attribute characteristics, discusses its feasibility, and discusses the global integration issues in the SSR environment.The useful reference text highlights terminologies and principles of SSR. It's a comprehensive analysis of the past, present and future of SSR from the system engineering point of view. Thereby, the novel book plays a leading role in the development of SSR worldwide.

The primary idea behind this book is to provide a platform for the sharing of contributions from the doctoral students of the Entrepreneurship and International Business group at the Department of Business Administration of Tallinn University of Technology (Estonia). The talented group, consisting of students from countries such as Egypt, Estonia, Germany, Ghana, Italy, Kazakhstan and Russia, are studying across various topics relating to Digital Transformation for Entrepreneurship and its related subjects. This thus creates a ripe opportunity for the sharing of perspectives from different theoretical and methodological applications.The book's chapters study decision-makers of small entrepreneurial firms, both start-ups and mature, as the primary target group, digging deep into their insights on recent and fresh research findings produced by the doctoral students as part of their studies.Therefore, the book fulfills two main objectives: 1) entrepreneurial firms will get concrete ideas and recommendations as to how to address and/or improve their entrepreneurial activities/approaches to entrepreneurship triggered by digital transformation, and 2) the doctoral students will get a unique opportunity to expand their scientific writing skills while at the same time having an opportunity to present their findings in a way that is considered relevant and impactful by practitioners.The scientific quality of each chapter has been ensured by the participation of two experienced scholars and supervisors - one of whom is the head of the Entrepreneurship and International Business group, and an active researcher on the book's topic - who have closely monitored the development process of the book.

The world is in short supply of energy. Along with environmental factors, it has become crucial for science to provide solutions. Energy Materials is a significant area of research in material science.The various aspects of energy include electrical power, comprising batteries, supercapacitors, thermoelectric energy conversion, photovoltaics, etc. Hydrogen is available in abundance, but catalysts are needed for the catalysis, so catalysts or porous solids have universal appeal in usage and applications. Then there are nuclear energy materials.Overall, energy materials have now captured the most attention worldwide in research and investment. This book covers various sections that are currently exploring energy solutions through materials.

The Pacific Symposium on Biocomputing (PSB) 2023 is an international, multidisciplinary conference for the presentation and discussion of current research in the theory and application of computational methods in problems of biological significance. Presentations are rigorously peer reviewed and are published in an archival proceedings volume. PSB 2023 will be held on January 3-7, 2023 in Kohala Coast, Hawaii. Tutorials and workshops will be offered prior to the start of the conference.PSB 2023 will bring together top researchers from the US, the Asian Pacific nations, and around the world to exchange research results and address open issues in all aspects of computational biology. It is a forum for the presentation of work in databases, algorithms, interfaces, visualization, modeling, and other computational methods, as applied to biological problems, with emphasis on applications in data-rich areas of molecular biology.The PSB has been designed to be responsive to the need for critical mass in sub-disciplines within biocomputing. For that reason, it is the only meeting whose sessions are defined dynamically each year in response to specific proposals. PSB sessions are organized by leaders of research in biocomputing's "hot topics." In this way, the meeting provides an early forum for serious examination of emerging methods and approaches in this rapidly changing field.

This book addresses the mathematical and the practical aspects of motion implied by advanced control theory. The richness and power of the theory are demonstrated by separate analyses of single-model and multi-modal repertoires, consisting of verities of estimation and control facets. Starting with purely mathematical concepts, specifically, abstract probability and information theories, model control theory is gradually revealed as a rather amazing domain. The mathematical equations, taking essentially simple forms, are exposed as powerful generators of motion. Moreover, seemingly obvious applications of the theory, such as high-performance aircraft control make room for unexpected virtual reality feedback in control of motion for the neurologically impaired.Following the presentation of some historical milestones and mathematical preliminaries, the book is divided into four parts. The first deals with minimal-order models of state estimation and control. The second addresses multi-modal estimation and control, which facilitates the operation of high-performance aircraft in large flight envelopes. The third presents the transition from naturally nonlinear control of movement in obstacle avoidance and object targeting to virtually linear control of movement in the neurologically impaired. The fourth and final part of the book addresses the application of virtual sensory feedback in walking with specific neurological impairment. While the clinical studies reported were all based on a single-model paradigm, a later reflection reveals that, given the variety of neurological symptoms associated with the relevant disorders, a multi-modal approach, as that addressed in the control of high-performance aircraft in a large flight envelope, would be similarly applicable in the treatment of neurological disorders.

Over the years, India has emerged as the third largest start-up ecosystem in the world, earning itself the reputation of being the emerging land for delivering unicorns. It has become one of the most attractive regions in the world for initiating and scaling up new business ideas. Many venture capitalists have invested in India's start-up ecosystem, and the government has also launched a variety of schemes to promote this growth. Indian organisations have become more competitive, making their global presence felt and expanding their reach into new industries and sectors.What factors have been pivotal for the growth of Indian start-ups? How did the Indian ecosystem evolve to fuel this growth? Is the role of leadership in start-ups more crucial than in other organisations?This book, through its diverse range of chapters, not only provides answers to the above questions, but also makes sincere efforts to highlight the innovative potential that start-ups carry and the leadership that is required to sail them through global competition. The book also provides an insight on the race of unicorns and how Indian start-ups have been extremely successful in bagging this coveted title. This edited book is a must-read for budding entrepreneurs and researchers who aim to understand and conduct research on Indian start-ups and their ecosystem support.

Bioinorganic chemistry is an interdisciplinary research field which centers on metals in biology. Over the past few decades, advances in chemistry, biology as well as in spectroscopic methods have shed light on the role of copper in human pathologies and allowed the growing discovery of copper-containing biological systems. Following this trend, much effort is being constantly chanelled towards understanding these fundamental biological processes or enzymes. In addition, chemists are developing molecules to target copper or copper enzymes as therapeutic tools. On the other hand, inspired by the function of biological systems, small molecular weight complexes inspired by the active site of copper enzymes are being prepared and studied. These bioinspired complexes can function both as mechanistic tools and as functional catalysts for oxidative transformations.The seven chapters in this book, contributed by internationally recognized authors cover recent developments on these aspects illustrated by interdisciplinary fields from biology, chemistry, spectroscopy to bioinspired catalysis. It contains aspects ranging from human health issues (copper homeostasis in bacteria and the development of molecules as anticancer or antibacterial agents) to bioinspired catalysis.

This book is written as a comprehensive and practical guide for General Practitioners who often manage patients with diabetic foot complications. Topics covered include Types of Diabetic Foot Complications, Basic Science involved, Examining a Diabetic Foot, Doing Investigations and Treating a Diabetic Foot, Endocrine Control, Nutritional Support, Choice of Wound Dressing and Choice of the appropriate Antibiotic. An important chapter, especially useful to the GPs is a practical guide on when to treat the patients in their clinics and when to send them to hospitals for management by Diabetic Foot Specialists. A special emphasis has also been given to guide GPs how to educate their patients on Care of Diabetes itself, Care of the Foot and Choice of Footwear.In addition, this Companion Book to GPs will also be useful to Nurses and Podiatrists who also provide care to Diabetic Foot patients. For the latter, a Supplement has been added. Relevant topics include Team Approach, Nursing a Diabetic Foot, Nutrition, Wound Dressings, Negative Pressure Wound Therapy, Maggot Debridement Therapy, Off-loading & Shoes, Hyperbaric Oxygen Therapy, Charcot Joint Disease and Rehabilitation.

In this book the author takes a pedagogic approach to Algebraic K-theory. He tried to find the shortest route possible, with complete details, to arrive at the homotopy approach of Quillen [Q] to Algebraic K-theory, with a simple goal to produce a self-contained and comprehensive pedagogic document in Algebraic K-theory, that is accessible to upper level graduate students. That is precisely what this book faithfully executes and achieves.The contents of this book can be divided into three parts - (1) The main body (Chapters 2-8), (2) Epilogue Chapters (Chapters 9, 10, 11) and (3) the Background and preliminaries (Chapters A, B, C, 1). The main body deals with Quillen's definition of K-theory and the K-theory of schemes. Chapters 2, 3, 5, 6, and 7 provide expositions of the paper of Quillen [Q], and chapter 4 is on agreement of Classical K-theory and Quillen K-theory. Chapter 8 is an exposition of the work of Swan [Sw1] on K-theory of quadrics.The Epilogue chapters can be viewed as a natural progression of Quillen's work and methods. These represent significant benchmarks and include Waldhausen K-theory, Negative K-theory, Hermitian K-theory, ¿¿¿¿-theory spectra, Grothendieck-Witt theory spectra, Triangulated categories, Nori-Homotopy and its relationships with Chow-Witt obstructions for projective modules. In most cases, the proofs are improvisation of methods of Quillen [Q].The background, preliminaries and tools needed in chapters 2-11, are developed in chapters A on Category Theory and Exact Categories, B on Homotopy, C on CW Complexes, and 1 on Simplicial Sets.

FLINS, an acronym originally for Fuzzy Logic and Intelligent Technologies in Nuclear Science, was inaugurated by Prof. Da Ruan of the Belgian Nuclear Research Center (SCK·CEN) in 1994 with the purpose of providing PhD and Postdoc researchers with a platform to present their research ideas in fuzzy logic and artificial intelligence. For more than 28 years, FLINS has been expanded to include research in both theoretical and practical development of computational intelligent systems.With this successful conference series: FLINS1994 and FLINS1996 in Mol, FLINS1998 in Antwerp, FLINS2000 in Bruges, FLINS2002 in Gent, FLINS2004 in Blankenberge, FLINS2006 in Genova, FLINS2008 in Marid, FLINS2010 in Chengdu, FLINS2012 in Istanbul, FLINS2014 in Juan Pesoa, FLINS2016 in Roubaix, FLINS2018 in Belfast and FLINS2020 in Cologne, FLINS2022 was organized by Nankai University, and co-organized by Southwest Jiaotong University, University of Technology Sydney and Ecole Nationale Supérieure des Arts et Industries Textiles of University of Lille. This unique international research collaboration has provided researchers with a platform to share and exchange ideas on state-of-art development in machine learning, multi agent and cyber physical systems.Following the wishes of Prof. Da Ruan, FLINS2022 offered an international platform that brought together mathematicians, computer scientists, and engineers who are actively involved in machine learning, intelligent systems, data analysis, knowledge engineering and their applications, to share their latest innovations and developments, exchange notes on the state-of-the-art research ideas, especially in the areas of industrial microgrids, intelligent wearable systems, sustainable development, logistics, supply chain and production optimization, evaluation systems and performance analysis, as well as risk and security management, that have now become part and parcel of Fuzzy Logic and Intelligent Technologies in Nuclear Science.This FLINS2022 Proceedings has selected 78 conference papers that cover the following seven areas of interests:Evolving Deep and Transfer Learning Models for Computer Vision and Medical Imaging,Applications, Theories and New Trends for Networked Systems,Intelligent wearable systems and computational techniques,Decision making under uncertainty: emerging topics and applications,Computational Techniques Based Intelligent Manufacturing Systems in Process Industry,Computational Intelligence for Sustainability, andAdvances in Reasoning Based Rational Decision Making.

This book gives a description of state-sum quantum gravity models which are based on triangulations of a smooth spacetime manifold. It contains detailed descriptions of Regge quantum gravity, spin-foam models and spin-cube models. Some other similar models, like the dynamical triangulations models, are only briefly described, since the sum over the spacetime triangulations is outside the scope of this book.The book also contains a detailed description of the approach where the piecewise linear (PL) manifold corresponding to a smooth manifold triangulation is considered as the basic structure of the spacetime. Hence the PL structure is not an auxiliary tool used to define the gravitational path integral for a smooth spacetime, but it is taken as a physical property of the spacetime. Consequently, it is straightforward to construct a finite gravitational path integral. Another consequence is that the problems of determination of the classical limit and how to calculate the quantum corrections can be solved by using the effective action method. The smooth manifold limit problem is then replaced by the problem of a smooth manifold approximation for the effective action, which can be obtained by using the standard quantum field theory with a physical cutoff.Some physical effects of a PL spacetime quantum gravity theory are also described, one of which is that the cosmological constant spectrum contains the observed value.A short exposition of higher gauge theory is also given, which is a promising way to generalize a gauge symmetry by using the concept of a 2-group. A 2-group is a categorical generalization of a group, and by using this approach one can construct the spin-cube models of quantum gravity.