Wireless sensor network consists of one or more base station and lots of sensor nodes. These sens... more Wireless sensor network consists of one or more base station and lots of sensor nodes. These sensor nodes are scattered in a specific area and these are battery operated. Since, the energy of battery is limited alternative to this problem is either to recharge the battery or to replace it with other one .In wireless sensor networks (WSNs), due to the limitation of nodes' energy, energy efficiency is an important factor should be considered when the protocols are designing. As a typical representative of hierarchical routing protocols, LEACH Protocol plays an important role. In this paper we proposed a modified LEACH which extends the LEACH clustering routing algorithm protocol in which cluster head chosen criteria is on the basis of minimum distance, maximum residual energy, minimum energy transmission. The result of simulations conducted indicates that the proposed clustering approach is more energy efficient and hence there is enhancement in the sensor network lifetime.
International Journal of Engineering and Management Research, Oct 29, 2021
Additive manufacturing is a revolutionary technology because of its ability to creates objects by... more Additive manufacturing is a revolutionary technology because of its ability to creates objects by adding material layer by layer rather than removing material from a block or by moulding procedure. Additive manufacturing has been around for more than three decades but still, traditional manufacturing is the dominant method for manufacturing. COVID-19 pandemic has been a torment globally and has brought distress and instability to the global economy. Due to this, the manufacturing sectors are badly affected. In this time of crisis, additive manufacturing has played a major role. This paper discusses the upsurge of Additive manufacturing due global COVID-19 pandemic and its worldwide impact on supply chain management.
India has a rich tradition of cultural practices and a textual heritage that dates back to severa... more India has a rich tradition of cultural practices and a textual heritage that dates back to several hundreds of years. The intellectual achievements of Indian thought are found across several fields of study in ancient Indian texts ranging from the Vedas and the Upanishads to a whole range of scriptural, philosophical, scientific, technical and artistic sources, which advocates environmentalism. However as the globalization took roots in India in late 80's and to withstand the competition face from global markets Indian Small Medium Enterprises ignored the environmental safety and as results of this pollution is now crossing critical limits in metro cities. Delhi experienced a number of Extreme Weather Events (EWEs) during recent years and a significant number of businesses were affected including the construction sector, which is a major employment driver, being the second largest employer in the country, next only to agriculture. However, little research work has been undertaken on how construction industry is at the risk due to the EWEs. The paper profoundly aims at exploring various such EMEs and their impact on the construction businesses. And finally suggests the ways through which it could be tackled. Research design/methodology/approach: A mix and match research design was adopted to elicit information from construction industry, involving a questionnaire survey and interviews to obtain responses from construction practitioners. Mean was used to establish the average scores for analysis and conclusion. Direct and Indirect impacts from extreme weather events on logistics, people premises, process, markets and finance are discussed in detail Findings/conclusions: Direct and indirect impacts from climate change include damage to products and tools from higher temperatures and increased rainfall, with consequent delays and increased costs to projects. The predominance of outdoor workers in this sector leaves its employees at higher risk from increased direct-heat stress, mostly dehydration all leading to severe effect on people.
Static analysis tools are traditionally used to detect and flag programs that violate properties.... more Static analysis tools are traditionally used to detect and flag programs that violate properties. We show that static analysis tools can also be used to perturb programs that satisfy a property to construct variants that violate the property. Using this insight we can construct paired data sets of unsafe-safe program pairs, and learn strategies to automatically repair property violations. We present a system called StaticFixer, which automatically repairs information flow vulnerabilities using this approach. Since information flow properties are non-local (both to check and repair), StaticFixer also introduces a novel domain specific language (DSL) and strategy learning algorithms for synthesizing non-local repairs. We use StaticFixer to synthesize strategies for repairing two types of information flow vulnerabilities, unvalidated dynamic calls and cross-site scripting, and show that StaticFixer successfully repairs several hundred vulnerabilities from open source JavaScript repositories, outperforming neural baselines built using CodeT5 and Codex. Our datasets can be downloaded from http://aka.ms/StaticFixer.
It is well known that real op-amps do not share most of the desirable characteristics of an ideal... more It is well known that real op-amps do not share most of the desirable characteristics of an ideal one, particularly those of gain and output impedance. When presented with a capacitive load, such as a MOSFET or ADC, feedback in an op-amp circuit can quickly become unstable. This thesis studies and characterizes an op-amp's output impedance and how its interaction with this type of load creates a parasitic pole which leads to instability. Applying ideas from feedback control theory, a model for studying the problem is developed from which a generalized method for compensating the undesirable circumstance is formulated. Even in a zero-input state, many real op-amps driving capacitive loads can experience unforced oscillations. A case study is performed with three commonly used devices. First, the output impedance is determined by its dependence on the unity-gain bandwidth, load capacitance, and oscillation frequency. It is fitted into a second-order feedback control model that allows for an analytical study of the problem. It is then shown that a carefully designed passive network can be introduced between the load and op-amp to obtain a properly damped system free of oscillation and well-behaved. Using a shunt resistor is a known and commonly used method for lowering an opamp's output impedance to gain stability. This work considers the converse addition of a series capacitor to instead lower the load capacitance seen by the op-amp, a seemingly complementary method that achieves the same goal. A generalized, composite compensation method is developed that uses both the shunt resistor and series capacitora strategy not yet found in literature. Relevant formulas for damping ratio and natural frequency are derived that allow the design of a passive compensation network. Furthermore, tradeoffs between compensation, voltage swing, current consumption, and power usage are considered. An emphasis is placed on comparing simulated versus real circuits to highlight the fact that any problem is much worse in real-life than in a simulation. SPICE models and programs aim to de-idealize certain device characteristics, but often cannot account for environmental conditions and manufacturing variance. Thus, an importance is placed on experimental verification guided by simulations.
In this paper we study laser diode parameters in fiber optic communication system and we study th... more In this paper we study laser diode parameters in fiber optic communication system and we study the relationship between them. The capacity of optical communication systems is rising exponentially in order to follow the rapidly increasing demand for data traffic. Limitations due to dispersion and non-linearity in the optical fiber become more stringent for higher bit rates.. In optical communication transmitters are light sources, receivers are light detectors and the channels are optical fibers. In optical communication the channel i.e., optical fiber plays an important role because it carries the data from transmitter to the receiver. Laser is a powerful source of light having extraordinary properties which are not found in the normal light sources like tungsten lamps, mercury lamps, etc..Laser surgery has also provided itself to be a preferred tool of operation over standard tools in a lot of the cases.
1,2,3,4 Student, IT Department, RMD Sinhgad School of Engineering, Warje, Pune, Maharashtra -----... more 1,2,3,4 Student, IT Department, RMD Sinhgad School of Engineering, Warje, Pune, Maharashtra ---------------------------------------------------------------------***--------------------------------------------------------------------AbstractAir pollution is rapidly increasing due to various human activities, and the occurrence of particulates, chemicals or biological resources into the environment cause several diseases resulting in discomfort or loss of human lives. The major cause of increasing air pollution is the emission of the pollutant like CO Monoxide, Hydro Carbon, Non-Methane HC by vehicles so it required controlling the same for public health and the natural environment.
Vehicular networks (VANETs) are a growing research area with a large number of use cases. Foresee... more Vehicular networks (VANETs) are a growing research area with a large number of use cases. Foreseen applications include safety applications, traffic efficiency enhancement and infotainment services. VANETs connects vehicle into a huge mobile ad hoc network to share information on a larger scale. The characteristics of VANET pose both challenges and opportunities in achieving security goals. Providing security to VANET is important in terms of providing user anonymity, authentication, integrity and privacy of data. In this paper we have discussed the various techniques which associated with the security, reliability and confidentiality of the disseminated data in VANET. Keywords— VANET, security issue, key management techniques
VANET is the technology of building a robust Ad-Hoc network between mobile vehicles and each othe... more VANET is the technology of building a robust Ad-Hoc network between mobile vehicles and each other, besides, between mobile vehicles and roadside units. Throughout the world, there are many national and international projects in governments, industry, and academia devoted to the development of VANET protocols. In this paper I have reviewed the various security protocols used for vehicular ad hoc networks, along with their characteristics and challenges.
Wireless sensor network consists of one or more base station and lots of sensor nodes. These sens... more Wireless sensor network consists of one or more base station and lots of sensor nodes. These sensor nodes are scattered in a specific area and these are battery operated. Since, the energy of battery is limited alternative to this problem is either to recharge the battery or to replace it with other one .In wireless sensor networks (WSNs), due to the limitation of nodes' energy, energy efficiency is an important factor should be considered when the protocols are designing. As a typical representative of hierarchical routing protocols, LEACH Protocol plays an important role. In this paper we proposed a modified LEACH which extends the LEACH clustering routing algorithm protocol in which cluster head chosen criteria is on the basis of minimum distance, maximum residual energy, minimum energy transmission. The result of simulations conducted indicates that the proposed clustering approach is more energy efficient and hence there is enhancement in the sensor network lifetime.
International Journal of Engineering and Management Research, 2021
Additive manufacturing is a revolutionary technology because of its ability to creates objects by... more Additive manufacturing is a revolutionary technology because of its ability to creates objects by adding material layer by layer rather than removing material from a block or by moulding procedure. Additive manufacturing has been around for more than three decades but still, traditional manufacturing is the dominant method for manufacturing. COVID-19 pandemic has been a torment globally and has brought distress and instability to the global economy. Due to this, the manufacturing sectors are badly affected. In this time of crisis, additive manufacturing has played a major role. This paper discusses the upsurge of Additive manufacturing due global COVID-19 pandemic and its worldwide impact on supply chain management.
International Journal of Engineering and Management Research, 2021
Lithium is one of the foremost valuable metal which is widely used for manufacturing batteries an... more Lithium is one of the foremost valuable metal which is widely used for manufacturing batteries and also has other uses in solar panels, ceramics, glasses and pharmaceuticals. Lithium is third most abundant element after hydrogen and helium but the most lithium deposits are only in Bolivia (21 million tons), Argentina (17 million tons), Chile (9 million tons), Australia (6.8 million tons), China (4.5 million tons). Bolivia, Argentina, Chile forms so called lithium triangle. Due to depleting reserves of fossil fuels and its harmful impact on the environment has forced the globe to shift to Lithium-ion batteries which is much eco-friendlier alternative. India’s push for electric vehicles (EV) may cause a considerable change in its energy security priorities, with securing lithium supplies, a key material for creating batteries, becoming as important as buying oil and gas fields overseas. India doesn't have enough lithium reserves for manufacturing lithium-ion batteries. The majorit...
International Journal of Clinical Biochemistry and Research, 2018
Introduction: Diabetes is a metabolic disorder characterized by hyperglycaemia which is associate... more Introduction: Diabetes is a metabolic disorder characterized by hyperglycaemia which is associated with rise in the HbA1c. Excess iron damages β-cells of pancreas due to oxidative stress which can contribute to pathogenesis of diabetes mellitus. Recent research reveals that HbA1c concentration also increases in iron deficiency anemia as well. This fact is hence important as in diabetic patient, the HbA1c may not be only correlated with blood sugar level but also iron status, if the patient happens to be suffering from iron deficiency anemia. Objectives: Correlation of HbA1c and glucose level with serum ferritin. Materials and Methods: A Cross sectional pilot study was conducted in 80 diabetic patients at Central Clinical Laboratory, MIMER Medical College, Talegaon. Result: There was a positive correlation between serum ferritin and Fasting sugar, postprandial sugar, HbA1c. Serum ferritin is significantly related to Fasting Sugar (P value-0.0028); postprandial sugar (P value-0.0118) and glycated Haemoglobin (P value-0.0007). P value <0.05 is considered statistically significant. Conclusion: Serum ferritin is elevated in patients with type 2 diabetes mellitus and can be used as a marker for glycemic control in diabetic patients.
It is well known that real op-amps do not share most of the desirable characteristics of an ideal... more It is well known that real op-amps do not share most of the desirable characteristics of an ideal one, particularly those of gain and output impedance. When presented with a capacitive load, such as a MOSFET or ADC, feedback in an op-amp circuit can quickly become unstable. This thesis studies and characterizes an op-amp's output impedance and how its interaction with this type of load creates a parasitic pole which leads to instability. Applying ideas from feedback control theory, a model for studying the problem is developed from which a generalized method for compensating the undesirable circumstance is formulated. Even in a zero-input state, many real op-amps driving capacitive loads can experience unforced oscillations. A case study is performed with three commonly used devices. First, the output impedance is determined by its dependence on the unity-gain bandwidth, load capacitance, and oscillation frequency. It is fitted into a second-order feedback control model that allows for an analytical study of the problem. It is then shown that a carefully designed passive network can be introduced between the load and op-amp to obtain a properly damped system free of oscillation and well-behaved. Using a shunt resistor is a known and commonly used method for lowering an opamp's output impedance to gain stability. This work considers the converse addition of a series capacitor to instead lower the load capacitance seen by the op-amp, a seemingly complementary method that achieves the same goal. A generalized, composite compensation method is developed that uses both the shunt resistor and series capacitora strategy not yet found in literature. Relevant formulas for damping ratio and natural frequency are derived that allow the design of a passive compensation network. Furthermore, tradeoffs between compensation, voltage swing, current consumption, and power usage are considered. An emphasis is placed on comparing simulated versus real circuits to highlight the fact that any problem is much worse in real-life than in a simulation. SPICE models and programs aim to de-idealize certain device characteristics, but often cannot account for environmental conditions and manufacturing variance. Thus, an importance is placed on experimental verification guided by simulations.
Fuzzy logic is an outcome of merging the techniques of traditional rule based expert system, set ... more Fuzzy logic is an outcome of merging the techniques of traditional rule based expert system, set theory and control theory, which is essentially based on mathematical models of the controlled process. Concept of this paper is to demonstrate how fuzzy logic is used as ...
The objective of this study is to analyse the performance of dispersed managed RZ system, differe... more The objective of this study is to analyse the performance of dispersed managed RZ system, different modulation formats and to study the different compensation techniques at high bit rate. The dispersed managed system is a promising way to transmit data in optical communication networks. ...
Journal of Earth Science & Climatic Change, 2014
India has a rich tradition of cultural practices and a textual heritage that dates back to severa... more India has a rich tradition of cultural practices and a textual heritage that dates back to several hundreds of years. The intellectual achievements of Indian thought are found across several fields of study in ancient Indian texts ranging from the Vedas and the Upanishads to a whole range of scriptural, philosophical, scientific, technical and artistic sources, which advocates environmentalism. However as the globalization took roots in India in late 80's and to withstand the competition face from global markets Indian Small Medium Enterprises ignored the environmental safety and as results of this pollution is now crossing critical limits in metro cities. Delhi experienced a number of Extreme Weather Events (EWEs) during recent years and a significant number of businesses were affected including the construction sector, which is a major employment driver, being the second largest employer in the country, next only to agriculture. However, little research work has been undertaken on how construction industry is at the risk due to the EWEs. The paper profoundly aims at exploring various such EMEs and their impact on the construction businesses. And finally suggests the ways through which it could be tackled. Research design/methodology/approach: A mix and match research design was adopted to elicit information from construction industry, involving a questionnaire survey and interviews to obtain responses from construction practitioners. Mean was used to establish the average scores for analysis and conclusion. Direct and Indirect impacts from extreme weather events on logistics, people premises, process, markets and finance are discussed in detail Findings/conclusions: Direct and indirect impacts from climate change include damage to products and tools from higher temperatures and increased rainfall, with consequent delays and increased costs to projects. The predominance of outdoor workers in this sector leaves its employees at higher risk from increased direct-heat stress, mostly dehydration all leading to severe effect on people.
Wireless sensor network consists of one or more base station and lots of sensor nodes. These sens... more Wireless sensor network consists of one or more base station and lots of sensor nodes. These sensor nodes are scattered in a specific area and these are battery operated. Since, the energy of battery is limited alternative to this problem is either to recharge the battery or to replace it with other one .In wireless sensor networks (WSNs), due to the limitation of nodes' energy, energy efficiency is an important factor should be considered when the protocols are designing. As a typical representative of hierarchical routing protocols, LEACH Protocol plays an important role. In this paper we proposed a modified LEACH which extends the LEACH clustering routing algorithm protocol in which cluster head chosen criteria is on the basis of minimum distance, maximum residual energy, minimum energy transmission. The result of simulations conducted indicates that the proposed clustering approach is more energy efficient and hence there is enhancement in the sensor network lifetime.
International Journal of Engineering and Management Research, Oct 29, 2021
Additive manufacturing is a revolutionary technology because of its ability to creates objects by... more Additive manufacturing is a revolutionary technology because of its ability to creates objects by adding material layer by layer rather than removing material from a block or by moulding procedure. Additive manufacturing has been around for more than three decades but still, traditional manufacturing is the dominant method for manufacturing. COVID-19 pandemic has been a torment globally and has brought distress and instability to the global economy. Due to this, the manufacturing sectors are badly affected. In this time of crisis, additive manufacturing has played a major role. This paper discusses the upsurge of Additive manufacturing due global COVID-19 pandemic and its worldwide impact on supply chain management.
India has a rich tradition of cultural practices and a textual heritage that dates back to severa... more India has a rich tradition of cultural practices and a textual heritage that dates back to several hundreds of years. The intellectual achievements of Indian thought are found across several fields of study in ancient Indian texts ranging from the Vedas and the Upanishads to a whole range of scriptural, philosophical, scientific, technical and artistic sources, which advocates environmentalism. However as the globalization took roots in India in late 80's and to withstand the competition face from global markets Indian Small Medium Enterprises ignored the environmental safety and as results of this pollution is now crossing critical limits in metro cities. Delhi experienced a number of Extreme Weather Events (EWEs) during recent years and a significant number of businesses were affected including the construction sector, which is a major employment driver, being the second largest employer in the country, next only to agriculture. However, little research work has been undertaken on how construction industry is at the risk due to the EWEs. The paper profoundly aims at exploring various such EMEs and their impact on the construction businesses. And finally suggests the ways through which it could be tackled. Research design/methodology/approach: A mix and match research design was adopted to elicit information from construction industry, involving a questionnaire survey and interviews to obtain responses from construction practitioners. Mean was used to establish the average scores for analysis and conclusion. Direct and Indirect impacts from extreme weather events on logistics, people premises, process, markets and finance are discussed in detail Findings/conclusions: Direct and indirect impacts from climate change include damage to products and tools from higher temperatures and increased rainfall, with consequent delays and increased costs to projects. The predominance of outdoor workers in this sector leaves its employees at higher risk from increased direct-heat stress, mostly dehydration all leading to severe effect on people.
Static analysis tools are traditionally used to detect and flag programs that violate properties.... more Static analysis tools are traditionally used to detect and flag programs that violate properties. We show that static analysis tools can also be used to perturb programs that satisfy a property to construct variants that violate the property. Using this insight we can construct paired data sets of unsafe-safe program pairs, and learn strategies to automatically repair property violations. We present a system called StaticFixer, which automatically repairs information flow vulnerabilities using this approach. Since information flow properties are non-local (both to check and repair), StaticFixer also introduces a novel domain specific language (DSL) and strategy learning algorithms for synthesizing non-local repairs. We use StaticFixer to synthesize strategies for repairing two types of information flow vulnerabilities, unvalidated dynamic calls and cross-site scripting, and show that StaticFixer successfully repairs several hundred vulnerabilities from open source JavaScript repositories, outperforming neural baselines built using CodeT5 and Codex. Our datasets can be downloaded from http://aka.ms/StaticFixer.
It is well known that real op-amps do not share most of the desirable characteristics of an ideal... more It is well known that real op-amps do not share most of the desirable characteristics of an ideal one, particularly those of gain and output impedance. When presented with a capacitive load, such as a MOSFET or ADC, feedback in an op-amp circuit can quickly become unstable. This thesis studies and characterizes an op-amp's output impedance and how its interaction with this type of load creates a parasitic pole which leads to instability. Applying ideas from feedback control theory, a model for studying the problem is developed from which a generalized method for compensating the undesirable circumstance is formulated. Even in a zero-input state, many real op-amps driving capacitive loads can experience unforced oscillations. A case study is performed with three commonly used devices. First, the output impedance is determined by its dependence on the unity-gain bandwidth, load capacitance, and oscillation frequency. It is fitted into a second-order feedback control model that allows for an analytical study of the problem. It is then shown that a carefully designed passive network can be introduced between the load and op-amp to obtain a properly damped system free of oscillation and well-behaved. Using a shunt resistor is a known and commonly used method for lowering an opamp's output impedance to gain stability. This work considers the converse addition of a series capacitor to instead lower the load capacitance seen by the op-amp, a seemingly complementary method that achieves the same goal. A generalized, composite compensation method is developed that uses both the shunt resistor and series capacitora strategy not yet found in literature. Relevant formulas for damping ratio and natural frequency are derived that allow the design of a passive compensation network. Furthermore, tradeoffs between compensation, voltage swing, current consumption, and power usage are considered. An emphasis is placed on comparing simulated versus real circuits to highlight the fact that any problem is much worse in real-life than in a simulation. SPICE models and programs aim to de-idealize certain device characteristics, but often cannot account for environmental conditions and manufacturing variance. Thus, an importance is placed on experimental verification guided by simulations.
In this paper we study laser diode parameters in fiber optic communication system and we study th... more In this paper we study laser diode parameters in fiber optic communication system and we study the relationship between them. The capacity of optical communication systems is rising exponentially in order to follow the rapidly increasing demand for data traffic. Limitations due to dispersion and non-linearity in the optical fiber become more stringent for higher bit rates.. In optical communication transmitters are light sources, receivers are light detectors and the channels are optical fibers. In optical communication the channel i.e., optical fiber plays an important role because it carries the data from transmitter to the receiver. Laser is a powerful source of light having extraordinary properties which are not found in the normal light sources like tungsten lamps, mercury lamps, etc..Laser surgery has also provided itself to be a preferred tool of operation over standard tools in a lot of the cases.
1,2,3,4 Student, IT Department, RMD Sinhgad School of Engineering, Warje, Pune, Maharashtra -----... more 1,2,3,4 Student, IT Department, RMD Sinhgad School of Engineering, Warje, Pune, Maharashtra ---------------------------------------------------------------------***--------------------------------------------------------------------AbstractAir pollution is rapidly increasing due to various human activities, and the occurrence of particulates, chemicals or biological resources into the environment cause several diseases resulting in discomfort or loss of human lives. The major cause of increasing air pollution is the emission of the pollutant like CO Monoxide, Hydro Carbon, Non-Methane HC by vehicles so it required controlling the same for public health and the natural environment.
Vehicular networks (VANETs) are a growing research area with a large number of use cases. Foresee... more Vehicular networks (VANETs) are a growing research area with a large number of use cases. Foreseen applications include safety applications, traffic efficiency enhancement and infotainment services. VANETs connects vehicle into a huge mobile ad hoc network to share information on a larger scale. The characteristics of VANET pose both challenges and opportunities in achieving security goals. Providing security to VANET is important in terms of providing user anonymity, authentication, integrity and privacy of data. In this paper we have discussed the various techniques which associated with the security, reliability and confidentiality of the disseminated data in VANET. Keywords— VANET, security issue, key management techniques
VANET is the technology of building a robust Ad-Hoc network between mobile vehicles and each othe... more VANET is the technology of building a robust Ad-Hoc network between mobile vehicles and each other, besides, between mobile vehicles and roadside units. Throughout the world, there are many national and international projects in governments, industry, and academia devoted to the development of VANET protocols. In this paper I have reviewed the various security protocols used for vehicular ad hoc networks, along with their characteristics and challenges.
Wireless sensor network consists of one or more base station and lots of sensor nodes. These sens... more Wireless sensor network consists of one or more base station and lots of sensor nodes. These sensor nodes are scattered in a specific area and these are battery operated. Since, the energy of battery is limited alternative to this problem is either to recharge the battery or to replace it with other one .In wireless sensor networks (WSNs), due to the limitation of nodes' energy, energy efficiency is an important factor should be considered when the protocols are designing. As a typical representative of hierarchical routing protocols, LEACH Protocol plays an important role. In this paper we proposed a modified LEACH which extends the LEACH clustering routing algorithm protocol in which cluster head chosen criteria is on the basis of minimum distance, maximum residual energy, minimum energy transmission. The result of simulations conducted indicates that the proposed clustering approach is more energy efficient and hence there is enhancement in the sensor network lifetime.
International Journal of Engineering and Management Research, 2021
Additive manufacturing is a revolutionary technology because of its ability to creates objects by... more Additive manufacturing is a revolutionary technology because of its ability to creates objects by adding material layer by layer rather than removing material from a block or by moulding procedure. Additive manufacturing has been around for more than three decades but still, traditional manufacturing is the dominant method for manufacturing. COVID-19 pandemic has been a torment globally and has brought distress and instability to the global economy. Due to this, the manufacturing sectors are badly affected. In this time of crisis, additive manufacturing has played a major role. This paper discusses the upsurge of Additive manufacturing due global COVID-19 pandemic and its worldwide impact on supply chain management.
International Journal of Engineering and Management Research, 2021
Lithium is one of the foremost valuable metal which is widely used for manufacturing batteries an... more Lithium is one of the foremost valuable metal which is widely used for manufacturing batteries and also has other uses in solar panels, ceramics, glasses and pharmaceuticals. Lithium is third most abundant element after hydrogen and helium but the most lithium deposits are only in Bolivia (21 million tons), Argentina (17 million tons), Chile (9 million tons), Australia (6.8 million tons), China (4.5 million tons). Bolivia, Argentina, Chile forms so called lithium triangle. Due to depleting reserves of fossil fuels and its harmful impact on the environment has forced the globe to shift to Lithium-ion batteries which is much eco-friendlier alternative. India’s push for electric vehicles (EV) may cause a considerable change in its energy security priorities, with securing lithium supplies, a key material for creating batteries, becoming as important as buying oil and gas fields overseas. India doesn't have enough lithium reserves for manufacturing lithium-ion batteries. The majorit...
International Journal of Clinical Biochemistry and Research, 2018
Introduction: Diabetes is a metabolic disorder characterized by hyperglycaemia which is associate... more Introduction: Diabetes is a metabolic disorder characterized by hyperglycaemia which is associated with rise in the HbA1c. Excess iron damages β-cells of pancreas due to oxidative stress which can contribute to pathogenesis of diabetes mellitus. Recent research reveals that HbA1c concentration also increases in iron deficiency anemia as well. This fact is hence important as in diabetic patient, the HbA1c may not be only correlated with blood sugar level but also iron status, if the patient happens to be suffering from iron deficiency anemia. Objectives: Correlation of HbA1c and glucose level with serum ferritin. Materials and Methods: A Cross sectional pilot study was conducted in 80 diabetic patients at Central Clinical Laboratory, MIMER Medical College, Talegaon. Result: There was a positive correlation between serum ferritin and Fasting sugar, postprandial sugar, HbA1c. Serum ferritin is significantly related to Fasting Sugar (P value-0.0028); postprandial sugar (P value-0.0118) and glycated Haemoglobin (P value-0.0007). P value <0.05 is considered statistically significant. Conclusion: Serum ferritin is elevated in patients with type 2 diabetes mellitus and can be used as a marker for glycemic control in diabetic patients.
It is well known that real op-amps do not share most of the desirable characteristics of an ideal... more It is well known that real op-amps do not share most of the desirable characteristics of an ideal one, particularly those of gain and output impedance. When presented with a capacitive load, such as a MOSFET or ADC, feedback in an op-amp circuit can quickly become unstable. This thesis studies and characterizes an op-amp's output impedance and how its interaction with this type of load creates a parasitic pole which leads to instability. Applying ideas from feedback control theory, a model for studying the problem is developed from which a generalized method for compensating the undesirable circumstance is formulated. Even in a zero-input state, many real op-amps driving capacitive loads can experience unforced oscillations. A case study is performed with three commonly used devices. First, the output impedance is determined by its dependence on the unity-gain bandwidth, load capacitance, and oscillation frequency. It is fitted into a second-order feedback control model that allows for an analytical study of the problem. It is then shown that a carefully designed passive network can be introduced between the load and op-amp to obtain a properly damped system free of oscillation and well-behaved. Using a shunt resistor is a known and commonly used method for lowering an opamp's output impedance to gain stability. This work considers the converse addition of a series capacitor to instead lower the load capacitance seen by the op-amp, a seemingly complementary method that achieves the same goal. A generalized, composite compensation method is developed that uses both the shunt resistor and series capacitora strategy not yet found in literature. Relevant formulas for damping ratio and natural frequency are derived that allow the design of a passive compensation network. Furthermore, tradeoffs between compensation, voltage swing, current consumption, and power usage are considered. An emphasis is placed on comparing simulated versus real circuits to highlight the fact that any problem is much worse in real-life than in a simulation. SPICE models and programs aim to de-idealize certain device characteristics, but often cannot account for environmental conditions and manufacturing variance. Thus, an importance is placed on experimental verification guided by simulations.
Fuzzy logic is an outcome of merging the techniques of traditional rule based expert system, set ... more Fuzzy logic is an outcome of merging the techniques of traditional rule based expert system, set theory and control theory, which is essentially based on mathematical models of the controlled process. Concept of this paper is to demonstrate how fuzzy logic is used as ...
The objective of this study is to analyse the performance of dispersed managed RZ system, differe... more The objective of this study is to analyse the performance of dispersed managed RZ system, different modulation formats and to study the different compensation techniques at high bit rate. The dispersed managed system is a promising way to transmit data in optical communication networks. ...
Journal of Earth Science & Climatic Change, 2014
India has a rich tradition of cultural practices and a textual heritage that dates back to severa... more India has a rich tradition of cultural practices and a textual heritage that dates back to several hundreds of years. The intellectual achievements of Indian thought are found across several fields of study in ancient Indian texts ranging from the Vedas and the Upanishads to a whole range of scriptural, philosophical, scientific, technical and artistic sources, which advocates environmentalism. However as the globalization took roots in India in late 80's and to withstand the competition face from global markets Indian Small Medium Enterprises ignored the environmental safety and as results of this pollution is now crossing critical limits in metro cities. Delhi experienced a number of Extreme Weather Events (EWEs) during recent years and a significant number of businesses were affected including the construction sector, which is a major employment driver, being the second largest employer in the country, next only to agriculture. However, little research work has been undertaken on how construction industry is at the risk due to the EWEs. The paper profoundly aims at exploring various such EMEs and their impact on the construction businesses. And finally suggests the ways through which it could be tackled. Research design/methodology/approach: A mix and match research design was adopted to elicit information from construction industry, involving a questionnaire survey and interviews to obtain responses from construction practitioners. Mean was used to establish the average scores for analysis and conclusion. Direct and Indirect impacts from extreme weather events on logistics, people premises, process, markets and finance are discussed in detail Findings/conclusions: Direct and indirect impacts from climate change include damage to products and tools from higher temperatures and increased rainfall, with consequent delays and increased costs to projects. The predominance of outdoor workers in this sector leaves its employees at higher risk from increased direct-heat stress, mostly dehydration all leading to severe effect on people.
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Papers by Shubham Gandhi