Showing posts with label engineering. Show all posts
Showing posts with label engineering. Show all posts

Saturday, February 26, 2011

Book Review - EMP Radiation and Protective Techniques



EMP Radiation  and Protective Techniques
by LW Ricketts, JE Bridges, J Miletta
A Wiley-Interscience Publication, 1976

1.            Nuclear weapons can have devastating effects. Usually, one thinks only of the blast, thermal, and radiation effects as they relate to the human body. However, considering only these factors ignores some of the other devastating effects. One such effect is that of the nuclear electromagnetic    pulse   (EMP).   The   effects   of   the   nuclear electromagnetic pulse must be considered and calculated when preparing for a nuclear war.

2.            Electromagnetic Pulse (EMP) is now recognised as one of the most important nuclear weapon threats. EMP from a weapon detonated many hundreds, even thousands, of kilometres away is capable of disrupting or damaging electronic equipment, especially modern digitally controlled systems. Equally important, in many cases EMP is not accompanied by any other prompt nuclear weapon output. These conclusions are supported by a considerable number of data developed from both sophisticated analyses and non-nuclear-threat-level experiments on electronic equipment.

3.            The importance of EMP is now clearly established, and a considerable amount of information is appearing in the open literature. Much of this information, however, is processed exclusively on a single topic and often does not address problems that are of immediate concern. Moreover so much “good” information has now become available that it is often impossible to extract the essentials and lay out a meaningful hardening program.

4.         The book shows how quantitative data on EMP pickup, component susceptibility, and hardening performance can be developed and integrated into EMP hardening requirements for specific electronic components or subsystems. These hardening requirements can be stated in a form (in terms of EMP pickup currents and voltages) readily understandable by various system design specialists. The book also describes the management aspects necessary for long term EMP hardening.

5.         The author has summarised information on hardening allocation in such a simple language that it can be understood even by the reader having nil experience in the field. This first involves identification of threat, the related EMP environment, and then the EMP pickup. The pickup is compared with the susceptibility to determine the total isolation required, which is then allocated to specific components of the system. The hardening isolation required can be reduced by proper component and system design. Laboratory methods similar to many existing procedures for EMC (electromagnetic compatibility) and RFI (radio-frequency interference) can be employed to confirm these analyses.

6.         The book is divided into three parts. Each part is further divided into chapters which cover specific topics. The author has definitely put in hard work and has covered a broad spectrum of the subject. Each chapter covers the related topics in great detail.

7.         In Part I EMP Environment and Pickup are nicely covered in two chapters. In chapter 1 the author discusses the EMP environment from a system and trade-off viewpoint. Twelve environments of significance are identified that may affect the various system design or operational mode options, and are explained with the help of a diagram. Further Near-Surface Burst, Mid-Altitude Burst and Exoatmospheric Burst are explained in detail with the help of figures and mathematical expressions. The author has covered the topics in such a way that even beginners can draw fruitful lessons from the text and other means used. Chapter 2 deals with the conversion of the EMP environment into currents and voltages that may be applied to sensitive components. This helps to give a means to the reader to understand as to how we can measure EMP in terms of quantities such as current, voltage and energy. Examples of results from calculations which are included, definitely enables the reader to obtain a feeling for the type of EMP pickup likely to be encountered. Similarly approximate formulas are presented that characterize the pickup in terms of a single lumped parameter circuit or Thevenin’s equivalent generator.

8.         Part II covers the Behaviour of Components and Subsystems. A large amount of data is tabulated in this part and also in Appendix B which covers the susceptibility tables. In chapter 3 the susceptibility on a quantitative basis of typical electronic parts, such as transistors, resistors and capacitors is discussed at length by the author. Although electronic components can be acted on directly by an EMP, the main threat to electrical components is the induced transients generated by EMP-system interaction. The chapter deals with the effects of short-duration electrical transients on electronic components. The prime attention is given to the failure thresholds of components, with emphasis on semiconductor devices. The electrical response of components to high-level transients is also discussed. All this is discussed with the help of well described graphs, diagrams and mathematical equations, which further helps the reader to understand the issue in an efficient manner. Chapter 4 deals with numerous formulas and other data that permit estimating the performance of various hardening components such as envelope shields, cable and connector shields, baluns, filters, surge arresters, transformers, chokes, disconnects, spark gaps, zener diodes and varistors. This chapter also tells how to calculate the hardening or shielding effectiveness of the various protective techniques and devices. Chapter 5 gives an insight to the practical aspects of the techniques described in chapter 4. The author has covered as to how to conduct the various laboratory test procedures required to evaluate the effectiveness of shields, vents, gaskets, cables, connectors, filters, surge arresters and chokes. This chapter shows how to setup and how to perform the various test procedures in the lab. The diagrammatic description of each procedure can be used to conduct these tests in the lab.

9.         Part III of the book gives an insight in to the System Aspects. Chapter 6 presents the management aspects of EMP hardening with emphasis on quality assurance. It also covers numerous system design aspects, including operational upset control, harmonising EMP, lighting and RFI requirements, and the development of a grounding and cabling plan. The chapter covers EMP hardening management, EMP control plan, design and development, maintenance and operations and monitoring of operational systems. The chapter also covers EMI, EMC, RFI, EMR, HERO and RADHAZ in brief. Shielding and Susceptibility Zoning Approaches, System Aspects of Damage Protection and System Aspects of Upset Protection are also covered. In Chapter 7 the author has nicely discussed one method of developing hardening allocations-specifying quantitative performance requirements for components and subsystems. The author has nicely addressed how hardening allocation approach may involve breaking the system up into various subsystems. Then the EMP hardening performance requirements are applied in a specific and quantitative way to each of these elements. This chapter also covers Buried Facility Allocations, Mobile Shielded Van Allocations and Aircraft Allocations which gives an adequate exposure to the reader.

10.       Apart from these seven chapters the author has also provided three appendices, which prove quite helpful. Appendix A contains a Glossary of Relevant Terms so that the reader can get a quick reference to various terms used in different chapters. Appendix B gives the various Susceptibility Tables, which contains susceptibility data on electronic circuits and components. Appendix C covers the various Simulation Facilities. 

11.       The book covers the activity relating to the susceptibility of electronic components and circuits used in electronic or electrical systems to the EMP environment or, more specifically, to the effects of transient voltages and currents that result from EMP energy being coupled into cables, antennas, power distribution systems, and other conductive structures. Particular emphasis has been given by the author to the margin of tolerance in the specifications of a device, circuit or subsystem. This can be a very important consideration in evaluating the degradation in the EMP environment.

12.       The book describes each topic adequately with the help of graphs, diagrams and mathematical expressions which will definitely be helpful for persons working in the field of EMP. Certain topics such as effects of EMP radiations on human body could also have been touched upon. The book also gives an exhaustive list of references and with the bibliography provided one can easily go out and enhance his knowledge of the subject.

Reviewed by one of my students Vikas Agnihotri

Thursday, September 2, 2010

A STUDY OF THE LIFE AND WORK OF BHARAT RATNA MAHARSHI DHONDO KESHAV KARVE

Bharat Ratna Maharshi Dhondo Keshav Karve

Biographical Literature on the Story of his Life and Work.

Reviewed by VIKRAM KARVE


In my own small way I wish to present a review of biographical literature on Maharshi Karve in order to enable readers, especially the students and alumni of educational institutions who owe their very genesis to Maharshi Karve like the SNDT University for Women Mumbai and the numerous and multifarious women’s schools and colleges under the aegis of the Maharshi Karve Stree Shikshan Samstha Pune get an insight into the life and work of this great social reformer whose ceaseless efforts played a cardinal role in transforming the destiny of the Indian woman.  
 
I have before me three books on Maharshi Dhondo Keshav Karve:
 
(i) His autobiography titled ‘Looking Back’ published in 1936.
 
(ii) Maharshi Karve by Ganesh L. Chandavarkar published in 1958 by Popular Prakashan Bombay (Mumbai)
 
(iii) Maharshi Karve – His 105 Years published on 18 April 1963 ( His 106th birth anniversary) by Hingne Stree Shiksan Samstha Poona (Pune) 
 
Allow me to tell you, Dear Reader, a bit about these books which describe the life and times of Maharshi Karve and tell us about the monumental pioneering work of one of the foremost social and educational reformers of India.

 
LOOKING BACK by Dhondo Keshav Karve - Autobiography

 
It would be apt to start with his autobiography – Looking Back, and let Maharshi Karve describe his life and work from his own point of view in his simple yet fascinating style.

I am placing below a Book Review of his autobiography (which I had reviewed a few years ago) for your perusal:
 
 
Book Review of 
The Autobiography of Maharshi Karve: 
“Looking Back” by  Dhondo Keshav Karve (1936)  
 
Dear Reader, you must be wondering why I am reviewing an autobiography written in 1936.

Well, sometime back, for six years of my life, I stayed in a magnificent building called Empress Court on Maharshi Karve Road in Mumbai.

I share the same surname [ Karve ] as the author.

Also, I happen to be the great grandson of Maharshi Dhondo Keshav Karve.

But, beyond that, compared to him I am a nobody – not even a pygmy.
 
Maharshi Karve clearly knew his goal, persisted ceaselessly throughout his life with missionary zeal and transformed the destiny of the Indian Woman.

The first university for women in India  -  The SNDT University and educational institutions for women covering the entire spectrum ranging from pre-primary schools to post-graduate, engineering, vocational and professional colleges bear eloquent testimony to his indomitable spirit, untiring perseverance and determined efforts.
 
In his preface, Frederick J Gould, renowned rationalist and lecturer on Ethics, writes that “the narrative is a parable of his career” – a most apt description of the autobiography. The author tells his life-story in a simple straightforward manner, with remarkable candour and humility; resulting in a narrative which is friendly, interesting and readable.
 
Autobiographies are sometimes voluminous tomes, but this a small book, 200 pages, and a very easy comfortable enjoyable read that makes it almost unputdownable.

Dr. Dhondo Keshav Karve writes a crisp, flowing narrative of his life, interspersed with his views and anecdotes, in simple, straightforward style which facilitates the reader to visualize through the author’s eyes the places, period, people and events pertaining to his life and times and the trials and tribulations he faced and struggled to conquer.
 
Dr. Dhondo Keshav Karve was born on 18th of April 1858. In the first few chapters he writes about Murud, his native place in Konkan, Maharashtra, his ancestry and his early life– the description is so vivid that you can clearly “see” through the author’s eye.
 
His struggle to appear in the public service examination (walking 110 miles in torrential rain and difficult terrain to Satara) and his shattering disappointment at not being allowed to appear for the examination (because “he looked too young”) make poignant reading.
 
“Many undreamt of things have happened in my life and given a different turn to my career” he writes, and then goes on to describe his high school and, later, college education at The Wilson College Bombay (Mumbai) narrating various incidents that convinced him of the role of destiny and serendipity in shaping his life and career as a teacher and then Professor of Mathematics.
 
He married at the age of fourteen but began his marital life at the age of twenty! This was the custom of those days. Let’s read the author’s own words on his domestic life: “… I was married at the age of fourteen and my wife was then eight. Her family lived very near to ours and we knew each other very well and had often played together. However after marriage we had to forget our old relation as playmates and to behave as strangers, often looking toward each other but never standing together to exchange words…. We had to communicate with each other through my sister…… My marital life began under the parental roof at Murud when I was twenty…” Their domestic bliss was short lived as his wife died after a few years leaving behind a son… “Thus ended the first part of my domestic life”… he concludes in crisp witty style.
 
An incident highlighting the plight of a widow left an indelible impression on him and germinated in him the idea of widow remarriage.

He married Godubai, who was widowed when she was only eight years old, was a sister of his friend Mr. Joshi, and now twenty three was studying at Pandita Ramabai’s Sharada Sadan as its first widow student.
 
Let’s read in the author’s own words how he asked for her hand in marriage to her father – “I told him…..I had made up my mind to marry a widow. He sat silent for a minute and then hinted that there was no need to go in search of such a bride”.
 
He describes in detail the ostracism he faced from some orthodox quarters and systematically enunciates his life work - his organization of the Widow Marriage Association, Hindu Widows Home, Mahila Vidyalaya, Nishkama Karma Math, and other institutions, culminating in the birth of the first Indian Women’s University (SNDT University).
 
The trials and tribulations he faced in his life-work of emancipation of education of women (widows in particular) and how he overcame them by his persistent steadfast endeavours and indomitable spirit makes illuminating reading and underlines the fact that Dr. DK Karve was no arm-chair social reformer but a person devoted to achieve his dreams on the ground in reality.
 
These chapters form the meat of the book and make compelling reading. His dedication and meticulousness is evident in the appendices where he has given date-wise details of his engagements and subscriptions down to the paisa for his educational institutions from various places he visited around the world to propagate their cause.
 
He then describes his world tour, at the ripe age of 71, to meet eminent educationists to propagate the cause of the Women’s University, his later domestic life and ends with a few of his views and ideas for posterity. At the end of the book, concluding his autobiography, he writes: “Here ends the story of my life. I hope this simple story will serve some useful purpose”.
 
Maharshi Dhondo Keshav Karve wrote this book in 1936. He lived on till the 9th of November 1962, achieving so much more on the way, and was conferred the honorary degree of Doctor of Letters ( D.Litt.) by the famous and prestigious Banaras Hindu University (BHU) in 1942, followed by University of Poona [Pune] in 1951, SNDT Women’s University in 1955, and the LL.D. by Bombay [Mumbai] University in 1957.
 
Maharshi Dhondo Keshav Karve received the Padma Vibhushan in 1955 and the India’s highest honour the “Bharat Ratna” in 1958, a fitting tribute on his centenary at the glorious age of 100.
 
It is an engrossing and illuminating autobiography, written in simple witty readable storytelling style, and it clearly brings out the mammoth contribution of Maharshi Karve and the trials and tribulations he faced.
 
Epilogue
 
I (the reviewer) was born in 1956, and have fleeting memories of Maharshi Karve, during our visits to Hingne Stree Sikshan Samstha in 1961-62, as a small boy of 5 or 6 can. My mother tells me that I featured in a Films Division documentary on him during his centenary celebrations in 1958 (I must have been barely two, maybe one and a half years old) and there is a photograph of him and his great grand children in which I feature.

It is from some old timers and other people and mainly from books that I learn of his pioneering work in transforming the destiny of the Indian Woman and I thought I should share this.
 
I have written this book review with the hope that some of us, particularly the students and alumni of Maharshi Karve Stree Shikshan Samstha ( MKSSS ), SNDT Women's University, Cummins College of Engineering for Women, SOFT, Karve Institute of Social Sciences and other educational institutions who owe their very genesis and existence to Maharshi Karve, are motivated to read about his stellar pioneering work and draw inspiration from his autobiography.
 
 
Reviews of two biographical books on Maharshi Karve

 
As I have mentioned earlier, two other good books pertaining to the life of Maharshi Karve which I have read are:
 
Maharshi Karve by Ganesh L. Chandavarkar, Popular Prakashan (1958)
 
And
 
Maharshi Karve – His 105 years, Hingne Stree Shikshan Samstha (1963).
 
 
 
The biography ‘Maharshi Karve by Ganesh L. Chandavarkar’ was commissioned and published by the Dr. DK Karve Centenary Celebrations Committee on 18th April 1958 the birth-centenary of Dr. DK Karve.

(Thousands attended the main function on 18th April 1958 at the Brabourne Stadium in Mumbai which was addressed by Pandit Jawaharlal Nehru, the Prime Minister).
 
The author, GL Chandavarkar, then Principal of Ram Mohan English school, has extensively researched the life of Dr. DK Karve, by personal interaction with the great man himself, reminiscences of his Professors, colleagues and students, and his two writings Looking back and Atma-Vritta.
 
The author acknowledges with humility: “This is the story of the life of a simple man who has risen to greatness without being aware of it in the least. It is being told by one who can make no claim to being a writer” - and then he lucidly narrates the story of Maharshi Karve’s life in four parts comprising twenty four chapters in simple narrative style.
 
Part I, comprising eight chapters, covers the early life of Dhondo Keshav Karve, from his birth to the defining moment in his life - his remarriage to Godubai who was widowed at the age of eight, within three months of her marriage, even before she knew what it was to be a wife.

The first chapter vividly depicts the life and culture of Murud and Konkan in a brilliantly picturesque manner and is a fascinating read. The narrative then moves in a systematic manner encompassing the salient aspects of Maharshi Karve’s life till his birth centenary in 1958.

The biographer comprehensively cover Maharshi Karve’s marital and work life, but does not throw much light on his relationships with his four illustrious sons, who were well-known in their own respective fields of work.  
 
The author avoids pontification and writes in friendly storytelling style which makes the book very interesting and readable, making it suitable for the young and old alike.

I feel an epilogue covering the remaining years of his life would make the biography more complete.
 
There is a reference index at the end and I found this book to be quite a definitive biography which could serve as a source for knowledge and inspiration to readers interested in the life and work of Maharshi Karve.

The 233 page book was published by Popular Book Depot Mumbai in 1958 and I picked up a copy priced at rupees forty at the International Book Service at Deccan Gymkhana in Pune a few years ago.   
 
 
Maharshi Karve – His 105 Years, published on his 106th birth anniversary, is a pictorial album depicting the life and activities of Maharshi Karve.

In today’s parlance it may be called a ‘coffee table’ book, but it is a memorable reference book of lasting souvenir value which is a must for every library.

The chronologically arranged sketches, photographs and captions tell Maharshi Karve’s life-story in a seamless manner. There are photographs of historical, heritage and sentimental value highlighting important milestones in his life and work.

If you want to see my picture, turn to page 98 and have a look at the small boy holding Maharshi Karve’s hands and looking at the camera. I may have been just one and a half years old then and barely able to stand...!
 
This book is indeed a ‘collector’s item’ and was priced at a princely sum of rupees ten at the time of publication.
 
If you wish to learn more about Maharshi Karve and draw inspiration from his life and work, do read these three books. 

And please do let us know if you come across literature on the life and work of Maharshi Dhondo Keshav Karve. 

VIKRAM KARVE
Copyright © Vikram Karve 2010
Vikram Karve has asserted his right under the Copyright, Designs and Patents Act 1988 to be identified as the author of this work.

VIKRAM KARVE educated at IIT Delhi, ITBHU and The Lawrence School Lovedale, is an Electronics and Communications Engineer by profession, a Human Resource Manager and Trainer by occupation, a Teacher by vocation, a Creative Writer by inclination and a Foodie by passion. An avid blogger, he has written a number of fiction short stories and creative non-fiction articles in magazines and journals for many years before the advent of blogging. His delicious foodie blogs have been compiled in a book "Appetite for a Stroll". Vikram lives in Pune with his family and pet Doberman girl Sherry, with whom he takes long walks thinking creative thoughts.

Vikram Karve Creative Writing Blog - http://vikramkarve.sulekha.com/
Academic and Creative Writing Journal Vikram Karve
– http://karvediat.blogspot.com/
Professional Profile of Vikram Karve
- http://www.linkedin.com/in/karve
Email:
vikramkarve@sify.com
Foodie Book: Appetite for a Stroll
http://books.sulekha.com/book/appetite-for-a-stroll/default.htm
© vikram karve., all rights reserved. 

Monday, June 28, 2010

INFORMATION CONTINUUM

MAKING SENSE OF INFORMATION TECHNOLOGY

Book Review by Vikram Karve

Title: Information, Systems and Information Systems – making sense of the field
Authors: Peter Checkland and Sue Howell
John Wiley & Sons (1988)
ISBN 0-471-95820-4



Information Technology ( IT ) is the buzzword of today. 

IT is ubiquitous. 

Today you are connected with IT in some way or the other, in fact IT is an integral part of our lives, and everyone seems to be rushing to join the IT bandwagon.

A few years ago, till the 1980s, there were courses in Electrical, Electronics, Communications and Telecommunications Engineering and later in Computer Science and Engineering, but now there are dedicated courses specifically in Information Technology, and almost all Engineers, and even pure scientists and others, irrespective of their specializations, are rushing away from their "core" academic disciplines to take up jobs in IT and IT Enabled Services.

The Management guys have also joined the fray and added a “management” dimension to IT by offering MBA courses in “IT Management”.

What exactly is IT...? 

Maybe the phrase Information Technology or “IT” was coined to mark the convergence of two technologies that had been traditionally separate: “Computing” and “Communications” and the confluence of several streams of development including electronics, microelectronics, computer science, telecommunications, software engineering and systems analysis.

There are a large number of books and extensive literature on the content of Information Technology.

This book is a significant treatise on the context of Information Technology.

The principal author Peter Checkland is a pioneering researcher in the field of Systems Engineering and Management and has developed breakthrough concepts like Soft Systems Methodology [SSM] and written the seminal classic “Systems Thinking, Systems Practice”. The co-author Sue Holwell has a rich and varied professional experience in systems design and implementation, information strategy and communication networks.

This book has eight chapters arranged in four parts.

In the first part on “The Field of Information Systems and its Problems” the authors deliberate on the basic concepts pertaining to Information Systems [IS] and Information Technology [IT], distinguish between the “Hard” (objective positivistic scientific) and “Soft” (subjective interpretative) schools of thought in the context of Management Information Systems [MIS], and introduce the reader to the fundamentals of Soft System Methodologies [SSM].

The “meat” of the book is in Part Two whose two chapters elucidate on the application of the developed Information System Management concepts to organizations and describe the “information continuum” – the linkages between data, information and knowledge. 

Parts Three and Four of the book substantiate these hypotheses with experiential examples from as early as World War II and drives home the point that the evolution and development of the science of Information Systems [IS] owes nothing to computers which did not exist in 1940, makes it clear that IS is not the same as IT, reminds us that computers are a mere means of IS, and cautions us against falling into the trap of “technological determinism” resulting from the prevalent propensity to overly focus on computer-based IT and allow technology to take charge of our actions.

The book is aptly adorned with simple illustrations which facilitate ease of understanding. 

As the dust jacket says, the book is a work of conceptual cleansing and presents a well-argued account of IS and IT which is both holistic and coherent. 

I recommend this remarkable book to students of Information Technology, Engineering and Management, Practising Engineers, Managers and Teaching Faculty and IT Professionals – reading this unique book will certainly enhance your conceptual understanding of Information Systems and Technology.


Book Review by Vikram Karve

http://www.linkedin.com/in/karve

vikramkarve@sify.com

Thursday, June 17, 2010

Book Review - Biological Effects of Microwaves by S Baranski and P Czerski

Title: Biological Effects of Microwaves


Authors: S Baranski and P Czerski

Published by: Dowden, Hutchinson and Ross, Inc., Stroudsburg, Pennsylvania, U.S.A. (1976)

Pages: 234

ISBN: 0-87933-145-3




Electromagnetic Radiations emanating from various communication systems and devices like Radio and TV broadcasting, satellite communication, cell phones, microwave ovens and electrical and electronic appliances have now become unavoidable area of our life. Microwaves constitute a significant part of electromagnetic radiations and contribute t “electro-pollution” as research indicates that microwaves affect living organisms. The book ‘Biological Effects of Microwaves’ by S. Baranski and P. Czerski presents the detailed research work done in this field and is one of the earliest books on the subject. It will prove helpful for the biologists, physicians, physicists as well as budding and practising electronic engineers.



The content of the book is organized in seven chapters.



Chapter number one is the ‘introduction’ with the subject. At the beginning of this chapter the authors make our concepts clear about the important terms like microwave radiation, ionizing radiation, non ionizing radiation and radioprotection. Before dealing with the microwaves we must know about the electromagnetic radiation spectrum. There are figures, illustrations and tables describing the electromagnetic radiation spectrum, the wavelengths (cm), energy (eV) of different waves like radiofrequencies, microwaves, visible light, UltraViolet Rays, X rays and Gamma rays and explaining some examples of typical uses of equipment generating radio-frequency and microwave radiation. It explains the uses of different ranges of frequencies, their respective applications, their occupational exposure and some examples of potential exposure i.e. general population hazards. This chapter also explains the microwave transmitter valves such as magnetron, klystron – Reflex klystron and multi cavity klystron and travelling wave tube briefly with their schematic representations.



Second chapter is about the ‘Physical Characteristics of Microwaves’. This chapter is designed in such a fashion that the reader who wants to enter in this field but have forgotten some of the basic concepts of physics related to the microwaves. This chapter is important and helpful to grasp the further concepts. It includes the basic phenomenon of formation of electromagnetic wave, set of parameters that characterize the electromagnetic waves such as frequency, velocity, wavelength, Electric and magnetic field vectors, relation between the two and the characteristic impedance. Coaxial transmission line, coaxial cable and wave guide are also explained to understand how the waves are propagated.



After getting introduced with the microwaves and going through their physical characteristics, in the third chapter we study the interaction of microwaves with the living systems. Biologists and physicians studied the interaction of microwaves with the living systems and they came to the result which had three phenomena like penetration of microwaves into a biological target and their propagation within it, secondly the primary interaction of microwaves with living matter and the secondary effects induced by the primary interaction. The three layered semi-infinite slab model of a biological target (which is made up of skin, fat and muscle) illuminated by simple wave front is explained and may be used for solving various problems relative to the medical use of shortwave and microwave diathermy. In the later subsections primary and secondary effects of microwave interaction are studied. There are illustrations of the primary and secondary effects of microwaves on different levels of organizations ranging from molecular level to highly organized living systems.



The fourth and the most praiseworthy chapter of this book is titled ‘Biological effects of Microwaves (Experimental Data)’. It presents the collection data found in literature on experimental facts and observations on biological effects of microwaves. Various results of experiments done on different animals like mice, dog, rats, guinea pigs and cat are illustrated. Effects of microwaves on nervous system, cardiovascular effects, effects on endocrine and metabolic effects, effects on genital system, foetal development, chromosomal effects, possible genetic effects and cellular effects, effects on internal organs like abdominal cavity, chest and digestive track, effects on blood and the blood forming system, cataractogenesis are presented with experimental details. In the last section of the chapter some comments on experimental studies on the interaction of microwaves with living systems are done which are very useful while doing such experiments.



Chapter Five is about the ‘health status of personnel occupationally exposed to microwaves and the symptoms of microwave overexposure’. In this chapter the outcome experiments and conclusions of literature survey of various authors are given. At the end of the chapter the main points which are the outcome of all the survey of the literature are collected.



Microwaves are the boon for the mankind and improve our quality of life in so many ways and it is prudent to be aware of and adopt safety standards to protect ourselves as well as the environment form the adverse effects of microwaves. Chapter Six is about the ‘Safe exposure limits and prevention of health hazards’ with analysis on the safe exposure limits of microwaves. The basic principles which may be used while determining the safe exposure limits are elucidated. At the end of the chapter prevention health hazards are given which are very much important while dealing with the microwaves.



The last chapter of the book summarises the work presented in the previous chapters and the important developments in the field till the writing of this book. The authors suggest integrated co-ordinated interdisciplinary efforts of biologists, physicians, physicists and electronic engineers. The authors have done extensive literature survey for this book and cite more than 600 references which may prove helpful for the reader for further studies in this subject. Though not recent, this book is an important reference work in its area and will prove useful for those who are doing research in this field.

Thursday, March 18, 2010

Maharshi Dhondo Keshav Karve - Biographical Literature on his Life and Work.

Maharshi Dhondo Keshav Karve  -  Biographical Literature on the Story of his Life and Work.

[ 
Reviewed by VIKRAM WAMAN KARVE  ]


In my own small way I wish to present a review of biographical literature on Maharshi Karve in order to enable readers, especially the students and alumni of educational institutions who owe their very genesis to Maharshi Karve like the SNDT University and the numerous and multifarious women’s schools and colleges under the aegis of the Maharshi Karve Stree Shikshan Samstha, get an insight into the life and work of this great social reformer whose ceaseless efforts played a cardinal role in transforming the destiny of the Indian woman.  
 
I have before me three books on Maharshi Dhondo Keshav Karve:
 
(i) His autobiography titled ‘Looking Back’ published in 1936.
 
(ii) Maharshi Karve by Ganesh L. Chandavarkar published in 1958 by Popular Prakashan Bombay (Mumbai)
 
(iii) Maharshi Karve – His 105 Years published on 18 April 1963 ( His 106th birth anniversary) by Hingne Stree Shiksan Samstha Poona (Pune) 
 
Allow me to tell you, Dear Reader, a bit about these books which describe the life and times of Maharshi Karve and tell us about the monumental pioneering work of one of the foremost social and educational reformers of India.

 
LOOKING BACK by Dhondo Keshav Karve - Autobiography

 
It would be apt to start with his autobiography – Looking Back, and let Maharshi Karve describe his life and work from his own point of view in his simple yet fascinating style.

I am placing below a Book Review of his autobiography (which I had reviewed a few years ago) for your perusal:
 
 
Book Review of The Autobiography of Maharshi Karve: “Looking Back” by  Dhondo Keshav Karve (1936)
 
 
Dear Reader, you must be wondering why I am reviewing an autobiography written in 1936.

Well, sometime back, for six years of my life, I stayed in a magnificent building called Empress Court on
Maharshi Karve Road at Churchgate in Mumbai.

I share the same surname [ Karve ] as the author.

Also, I happen to be the great grandson of Maharshi Dhondo Keshav Karve.

But, beyond that, compared to him I am a nobody – not even a pygmy.
 
Maharshi Karve clearly knew his goal, persisted ceaselessly throughout his life with missionary zeal and transformed the destiny of the Indian Woman.

The first university for women in India  -  The SNDT University and educational institutions for women covering the entire spectrum ranging from pre-primary schools to post-graduate, engineering, vocational and professional colleges bear eloquent testimony to his indomitable spirit, untiring perseverance and determined efforts.
 
In his preface, Frederick J Gould, renowned rationalist and lecturer on Ethics, writes that “the narrative is a parable of his career” – a most apt description of the autobiography. The author tells his life-story in a simple straightforward manner, with remarkable candour and humility; resulting in a narrative which is friendly, interesting and readable.
 
Autobiographies are sometimes voluminous tomes, but this a small book, 200 pages, and a very easy comfortable enjoyable read that makes it almost unputdownable.

Dr. Dhondo Keshav Karve writes a crisp, flowing narrative of his life, interspersed with his views and anecdotes, in simple, straightforward style which facilitates the reader to visualize through the author’s eyes the places, period, people and events pertaining to his life and times and the trials and tribulations he faced and struggled to conquer.
 
Dr. Dhondo Keshav Karve was born on 18th of April 1858. In the first few chapters he writes about Murud, his native place in Konkan, Maharashtra, his ancestry and his early life– the description is so vivid that you can clearly “see” through the author’s eye.
 
His struggle to appear in the public service examination (walking 110 miles in torrential rain and difficult terrain to Satara) and his shattering disappointment at not being allowed to appear for the examination (because “he looked too young”) make poignant reading.
 
“Many undreamt of things have happened in my life and given a different turn to my career” he writes, and then goes on to describe his high school and, later, college education at The Wilson College Bombay (Mumbai) narrating various incidents that convinced him of the role of destiny and serendipity in shaping his life and career as a teacher and then Professor of Mathematics.
 
He married at the age of fourteen but began his marital life at the age of twenty! This was the custom of those days. Let’s read the author’s own words on his domestic life: “… I was married at the age of fourteen and my wife was then eight. Her family lived very near to ours and we knew each other very well and had often played together. However after marriage we had to forget our old relation as playmates and to behave as strangers, often looking toward each other but never standing together to exchange words…. We had to communicate with each other through my sister…… My marital life began under the parental roof at Murud when I was twenty…” Their domestic bliss was short lived as his wife died after a few years leaving behind a son… “Thus ended the first part of my domestic life”… he concludes in crisp witty style.
 
An incident highlighting the plight of a widow left an indelible impression on him and germinated in him the idea of widow remarriage.

He married Godubai, who was widowed when she was only eight years old, was a sister of his friend Mr. Joshi, and now twenty three was studying at Pandita Ramabai’s Sharada Sadan as its first widow student.
 
Let’s read in the author’s own words how he asked for her hand in marriage to her father – “I told him…..I had made up my mind to marry a widow. He sat silent for a minute and then hinted that there was no need to go in search of such a bride”.
 
He describes in detail the ostracism he faced from some orthodox quarters and systematically enunciates his life work - his organization of the Widow Marriage Association, Hindu Widows Home, Mahila Vidyalaya, Nishkama Karma Math, and other institutions, culminating in the birth of the first Indian Women’s University (SNDT University).
 
The trials and tribulations he faced in his life-work of emancipation of education of women (widows in particular) and how he overcame them by his persistent steadfast endeavours and indomitable spirit makes illuminating reading and underlines the fact that Dr. DK Karve was no arm-chair social reformer but a person devoted to achieve his dreams on the ground in reality.
 
These chapters form the meat of the book and make compelling reading. His dedication and meticulousness is evident in the appendices where he has given date-wise details of his engagements and subscriptions down to the paisa for his educational institutions from various places he visited around the world to propagate their cause.
 
He then describes his world tour, at the ripe age of 71, to meet eminent educationists to propagate the cause of the Women’s University, his later domestic life and ends with a few of his views and ideas for posterity. At the end of the book, concluding his autobiography, he writes: “Here ends the story of my life. I hope this simple story will serve some useful purpose”.
 
Maharshi Dhondo Keshav Karve wrote this book in 1936. He lived on till the 9th of November 1962, achieving so much more on the way, and was conferred the honorary degree of Doctor of Letters ( D.Litt.) by the famous and prestigious Banaras Hindu University (BHU) in 1942, followed by University of Poona [Pune] in 1951, SNDT Women’s University in 1955, and the LL.D. by Bombay [Mumbai] University in 1957.
 
Maharshi Dhondo Keshav Karve received the Padma Vibhushan in 1955 and the India’s highest honour the “Bharat Ratna” in 1958, a fitting tribute on his centenary at the glorious age of 100.
 
It is an engrossing and illuminating autobiography, written in simple witty readable storytelling style, and it clearly brings out the mammoth contribution of Maharshi Karve and the trials and tribulations he faced.
 
Epilogue
 
I (the reviewer) was born in 1956, and have fleeting memories of Maharshi Karve, during our visits to Hingne Stree Sikshan Samstha in 1961-62, as a small boy of 5 or 6 can.

My mother tells me that I featured in a Films Division documentary on him during his centenary celebrations in 1958 (I must have been barely two, maybe one and a half years old) and there is a photograph of him and his great grand children in which I feature.

It is from some old timers and other people and mainly from books that I learn of his pioneering work in transforming the destiny of the Indian Woman and I thought I should share this.
 
I have written this book review with the hope that some of us, particularly the students and alumni of SNDT University, Cummins College of Engineering for Women, SOFT, Karve Institute of Social Sciences and other educational institutions who owe their very genesis and existence to Maharshi Karve, are motivated to read about his stellar pioneering work and draw inspiration from his autobiography.
 
 
Reviews of two biographical books on Maharshi Karve

 
As I have mentioned earlier, two other good books pertaining to the life of Maharshi Karve which I have read are:
 
Maharshi Karve by Ganesh L. Chandavarkar, Popular Prakashan (1958)
 
And
 
Maharshi Karve – His 105 years, Hingne Stree Shikshan Samstha (1963).
 
 
 
The biography ‘Maharshi Karve by Ganesh L. Chandavarkar’ was commissioned and published by the Dr. DK Karve Centenary Celebrations Committee on 18th April 1958 the birth-centenary of Dr. DK Karve.

(Thousands attended the main function on 18th April 1958 at the Brabourne Stadium in Mumbai which was addressed by Pandit Jawaharlal Nehru, the Prime Minister).
 
The author, GL Chandavarkar, then Principal of Ram Mohan English school, has extensively researched the life of Dr. DK Karve, by personal interaction with the great man himself, reminiscences of his Professors, colleagues and students, and his two writings Looking back and Atma-Vritta.
 
The author acknowledges with humility: “This is the story of the life of a simple man who has risen to greatness without being aware of it in the least. It is being told by one who can make no claim to being a writer” - and then he lucidly narrates the story of Maharshi Karve’s life in four parts comprising twenty four chapters in simple narrative style.
 
Part I, comprising eight chapters, covers the early life of Dhondo Keshav Karve, from his birth to the defining moment in his life - his remarriage to Godubai who was widowed at the age of eight, within three months of her marriage, even before she knew what it was to be a wife.

The first chapter vividly depicts the life and culture of Murud and Konkan in a brilliantly picturesque manner and is a fascinating read. The narrative then moves in a systematic manner encompassing the salient aspects of Maharshi Karve’s life till his birth centenary in 1958.

The biographer comprehensively cover Maharshi Karve’s marital and work life, but does not throw much light on his relationships with his four illustrious sons, who were well-known in their own respective fields of work.  
 
The author avoids pontification and writes in friendly storytelling style which makes the book very interesting and readable, making it suitable for the young and old alike.

I feel an epilogue covering the remaining years of his life would make the biography more complete.
 
There is a reference index at the end and I found this book to be quite a definitive biography which could serve as a source for knowledge and inspiration to readers interested in the life and work of Maharshi Karve.

The 233 page book was published by Popular Book Depot Mumbai in 1958 and I picked up a copy priced at rupees forty at the International Book Service at Deccan Gymkhana in Pune a few years ago. 
 
 
 
Maharshi Karve – His 105 Years, published on his 106th birth anniversary, is a pictorial album depicting the life and activities of Maharshi Karve.

In today’s parlance it may be called a ‘coffee table’ book, but it is a memorable reference book of lasting souvenir value which is a must for every library.

The chronologically arranged sketches, photographs and captions tell Maharshi Karve’s life-story in a seamless manner. There are photographs of historical, heritage and sentimental value highlighting important milestones in his life and work.

[If you want to see my picture, turn to page 98 and have a look at the small boy holding Maharshi Karve’s hands and looking at the camera. I may have been just one and a half years old then and barely able to stand!].
 
This book is indeed a ‘collector’s item’ and was priced at a princely sum of rupees ten at the time of publication.
 
If you wish to learn more about Maharshi Karve and draw inspiration from his life and work, do read these three books.

And please do let us know if you come across literature on the life and work of Maharshi Dhondo Keshav Karve.
 
 
 
VIKRAM KARVE
 

Copyright © Vikram Karve 2010
Vikram Karve has asserted his right under the Copyright, Designs and Patents Act 1988 to be identified as
the author of this book review article.
 
 

Monday, March 15, 2010

INFORMATION SYSTEMS

Book Review

Title: Information, Systems and Information Systems – making sense of the field
Authors: Peter Checkland and Sue Howell
John Wiley & Sons (1988)
ISBN 0-471-95820-4
  
[Reviewed by Vikram Waman Karve]
   
Information Technology ( IT ) is the buzzword of today. 

IT is ubiquitous; almost everyone is connected with IT in some way or the other. 

A few years ago, till the nineteen eighties, there were courses in Electrical, Electronics, Communications and Telecommunications Engineering and later in Computer Science and Engineering, but now there are dedicated courses in Information Technology, and almost all Engineers, and even others, irrespective of their specializations, are rushing to take up jobs in IT and IT Enabled Services. 

The Management guys have also joined the fray and added a “management” dimension to IT by offering MBA courses in “IT Management”.

What exactly is IT? 

Maybe the phrase “IT” was coined to mark the convergence of two technologies that had been traditionally separate: “Computing” and “Communications” and the confluence of several streams of development including electronics, microelectronics, computer science, telecommunications, software engineering and systems analysis.

There are a large number of books and extensive literature on the content of IT. 

This book is a significant treatise on the context of IT. 

The principal author Peter Checkland is a pioneering researcher in the field of Systems Engineering and Management and has developed breakthrough concepts like Soft Systems Methodology [SSM] and written the seminal classic “Systems Thinking, Systems Practice”. The co-author Sue Holwell has a rich and varied professional experience in systems design and implementation, information strategy and communication networks.

This book has eight chapters arranged in four parts. 

In the first part on “The Field of Information Systems and its Problems” the authors deliberate on the basic concepts pertaining to Information Systems [IS] and Information Technology [IT], distinguish between the “Hard” (objective positivistic scientific) and “Soft” (subjective interpretative) schools of thought in the context of Management Information Systems [MIS], and introduce the reader to the fundamentals of Soft System Methodologies [SSM].

The “meat” of the book is in Part Two whose two chapters elucidate on the application of the developed Information System Management concepts to organizations and describe the “information continuum” – the linkages between data, information and knowledge. Parts Three and Four substantiate these hypotheses with experiential examples from as early as World War II and drives home the point that the evolution and development of the science of Information Systems [IS] owes nothing to computers which did not exist in 1940, makes it clear that IS is not the same as IT, reminds us that computers are a mere means of IS, and cautions us against falling into the trap of “technological determinism” resulting from the prevalent propensity to overly focus on computer-based IT and allow technology to take charge of our actions.

The book is aptly adorned with simple illustrations which facilitate ease of understanding. As the dust jacket says, the book is a work of conceptual cleansing and presents a well-argued account of IS and IT which is both holistic and coherent. I recommend this remarkable book to IT, Engineering and Management students and professionals – reading it will certainly enhance their conceptual understanding of Information Systems and Technology.
   
( Book Review by Vikram Waman Karve )