Journal of Advance Research in Applied Science (ISSN: 2208-2352), 2014
The shadow hand is an advanced humanoid hand that uses hand movements and trajectory tracking to ... more The shadow hand is an advanced humanoid hand that uses hand movements and trajectory tracking to control the motion of shadow hand. The shadow hand will be integrated with 40 Air Muscles or 20 DC motors with the help of which it will move. The muscles will be in accordance allowing the hand to be used around soft or fragile objects. The hand will be shaped with touch sensors on finger tips to offer high sensitivity. This shadow hand robot has its various applications in household work, telepresence operations, bomb disarmament, military and medical purposes. Through this shadow hand bot we would also be able the problems faced by handicapped people.
International Journal of Oral Care and Research, 2020
One of the most common problems faced by clinicians in pediatric dentistry is to provide restorat... more One of the most common problems faced by clinicians in pediatric dentistry is to provide restorations in primary and young permanent teeth which are aesthetically acceptable, durable and cost effective. A wide range of crowns are available for this purpose and the selection of the most appropriate crown will help achieve better final outcomes of treatment. The vary widely from being the directly bondable to the tooth surface to crowns which are luted onto the tooth surface. They may also vary in composition from metal crowns with or without facings to resin, polycarbonate, and ceramic crowns. This review attempts to assimilate and bring out the varied array of pediatric crowns available in the published data for utilization by the pedodontist as per the needs of the patient. The knowledge of the available resources and the various advantages, disadvantages and properties of the same will go a long way in enhancing the clinician’s ability to make the most appropriate choice for the patient.
PURPOSE To describe clinical, radiological and functional outcomes of patients with post-tubercul... more PURPOSE To describe clinical, radiological and functional outcomes of patients with post-tubercular healed kyphosis operated by posterior-only three-column osteotomy. METHODS The hospital records of 47 patients from a single center, operated for healed, post-tubercular kyphosis were retrospectively analyzed. Deformity correction in all patients was done utilizing a three-column osteotomy by a single-stage, posterior-only approach. Radiological parameters (local kyphosis angle; KA, thoracic kyphosis; TK, lumbar lordosis; LL, pelvic tilt; PT, sacral slope; SS, C7 sagittal vertical axis; C7 SVA, pelvic incidence minus lumbar lordosis; PI-LL), functional scores and clinical details of complications were recorded. RESULTS The median age of the study population was 16 years (6-45). The apex of deformity was in thoracic, thoracolumbar and lumbar spine in 22, 19 and 6 cases, respectively. The mean operative time was 197.2 ± 30.5 min and the mean operative blood loss was 701 ± 312 ml. KA (preoperative: 68.2° ± 26.9° v/s postoperative: 29.6° ± 20.3°; p value < 0.0001), C7 SVA (preoperative 20.9 ± 37.9 mm v/s postoperative: 5.5 ± 16.3 mm; p value = 0.005) and TK (preoperative 47.7° ± 33.2° v/s postoperative: 37.8° ± 19.8°; p value = 0.0024) underwent a significant change with surgery. Mean SRS-22r score improved after surgical correction (preoperative: 2.7 ± 0.2 v/s final follow-up: 4 ± 0.2; p < 0.0001) with the maximum improvement occurring in self-image domain. The overall complication rate was 29.7%-including 4 neurological and 10 non-neurological complications. Permanent neurological deterioration was seen in one patient. CONCLUSION Three-column osteotomies through posterior-only approach are safe and effective and offer good clinic-radiological and function outcome in post-tubercular kyphotic deformity correction.
International Journal of Mathematics Trends and Technology, 2020
The Brachistochrone and Tautocrone problem is not new but it was one of the fundamental problems ... more The Brachistochrone and Tautocrone problem is not new but it was one of the fundamental problems given to the best mathematical minds in the world like Bernoulli brothers, L-hopital, Newton and Gottfried Leibnitz. As an enlightening fact the problem was both given and cracked by Johann Bernoulli. This was not just the foremost mathematical problem in the world but also the instigator of the branch of mathematics called as &quot;Calculus of variation&quot; and also proved many physical prodigies so, in essence this problem marked a breakthrough in the world of science. I have developed an approach based on the parity of both the Brachistochrone and Tautocrone curve that syndicates both of them which can further lead to mathematical progressions or can make new progresses in the field of physics.
International Journal of Economics and Business Research, 2021
In the 1950s and 1960s standard finance evolved and thereafter got wide acceptance among academia... more In the 1950s and 1960s standard finance evolved and thereafter got wide acceptance among academia. However, standard finance paradigm faced difficulties and was questioned, when cracks began to appear due to the growing market inefficiencies and the fact that humans are not always rational. Thus, the inherent flaws in traditional finance led to the emergence of behavioural finance, a new science which is a harmonious blend of research principles derived from subjects like finance, cognitive psychology, and behavioural economics. It propounds psychologically-based theories to illustrate stock market anomalies, its core focus is to study the erroneous or less than perfect human behaviour that influences individual investment decision and its subsequent effect on the market. This paper aims to critically analyse the traditional financial theories, how behavioural finance supplemented these theories by introducing behavioural aspects and also uncovers the psychological impact of individuals on their decision-making behaviour.
ObjectiveThe otolaryngology community has significant concerns regarding the spread of SARS‐CoV‐2... more ObjectiveThe otolaryngology community has significant concerns regarding the spread of SARS‐CoV‐2 through droplet contamination and viral aerosolization during head and neck examinations and procedures. The objective of this study was to investigate the droplet and splatter contamination from common otologic procedures.Study DesignCadaver simulation series.SettingDedicated surgical laboratory.MethodsTwo cadaver heads were prepped via bilateral middle cranial fossa approaches to the tegmen (n = 4). Fluorescein was instilled through a 4‐mm burr hole drilled into the middle cranial fossa floor, and presence in the middle ear was confirmed via microscopic ear examination. Myringotomy with ventilation tube placement and mastoidectomy were performed, and the distribution and distance of resulting droplet splatter patterns were systematically evaluated.ResultsThere were no fluorescein droplets or splatter contamination observed in the measured surgical field in any direction after myringot...
Purpose: To characterize performance among ED sites participating in the Emergency Quality Networ... more Purpose: To characterize performance among ED sites participating in the Emergency Quality Network (E-QUAL) Avoidable Imaging Initiative for clinical targets on the American College of Emergency Physicians Choosing Wisely list.
In many cases of sexual assault, traces of semen are left behind on the victim's body, clothe... more In many cases of sexual assault, traces of semen are left behind on the victim's body, clothes and the area in which the assault has taken place. The positive identification of semen is instrumental in supporting such cases. There are several methods of forensic examination of semen reported in literature, but the presence of blood complicates the identification of semen stains. This paper presents one such case study where the presence of blood makes DNA profiling more challenging as the PCR amplification becomes complicated, and the absolute differential isolation is the only way to get the clear profile using identifiler kits.
To determine the thickness of the calvarium in patients with spontaneous cerebrospinal fluid (CSF... more To determine the thickness of the calvarium in patients with spontaneous cerebrospinal fluid (CSF) leaks. Study Design: Case control study. Setting: University of Iowa Hospitals and Clinics. Patients: Those with a confirmed spontaneous CSF leak compared to non-obese (body mass index, BMI G 30) and obese (BMI Q 30) cochlear implant (CI) control groups. All patients had to have temporal bone CT scans that fit specified criteria. Intervention: Bilateral volumetric analysis of the squamous temporal bone and the zygoma in all patients. Assessment of patient age, sex, BMI, and medical comorbidities. Main Outcome Measure: Assessment of the average thickness of the squamous temporal bone and zygoma compared to control groups. Results: The average BMI of patients with spontaneous CSF leaks was significantly higher than non-obese CI controls (43.73 T 9.19 vs. 24.60 T 3.10; P G 0.0001). The calvarium in patients with spontaneous CSF leaks was 23% thinner than both non-obese CI controls (3.29 T 0.68 vs. 4.25 T 0.58; P G 0.0001) and obese CI controls (3.29 T 0.68 vs. 4.27 T 0.68; P G 0.0001). In addition, the skull thickness of obese CI patients (body mass index, BMI = 37.34 T 6.1) was not significantly different from non-obese CI controls (4.27 T 0.68 vs. 4.25 T 0.58; P = 0.92). The extracranial zygoma was not significantly different among the three groups (ANOVA = 0.9). In our study groups, 5.8% of both CI control groups had the diagnosis of obstructive sleep apnea (OSA), whereas 46.2% of the spontaneous CSF leak patients presented with the diagnosis of OSA. Conclusion: Patients with spontaneous CSF leak are more likely to be obese, have the diagnosis of OSA, and show thinning of their entire calvarium that is independent of BMI. These data suggest an additional obesity-associated intracranial process contributes to skull thinning.
Ethnographic Praxis in Industry Conference Proceedings, 2014
Here we consider design ethnography, and design fiction. We cast these two approaches, and the de... more Here we consider design ethnography, and design fiction. We cast these two approaches, and the design endeavor itself, as forward-looking processes. Exploring the means by which design ethnography and design fiction derive their value reveals the potential for a mutually beneficial symbiosis. Our thesis argues that design ethnography can provide design fiction with the methods required to operationalize the practice in industry contexts. Meanwhile design fiction can provide design ethnographers a novel way of extending the temporal scope of the practice, thus deriving actionable insights that are applicable further into the future. "While we are more than ever aware of both the promise and the threat of technological advance, we still lack the intellectual means and political tools for managing progress."
From the Department of General Surgery, Indira Gandhi Medical College and Hospital (IGMCH), Shiml... more From the Department of General Surgery, Indira Gandhi Medical College and Hospital (IGMCH), Shimla, HP, India. Reprints: Rajender Singh Jhobta, MBBS, MS, TRIBHUVAN, Oppo-site Mehta Petrol Pump, Sanjauli, Shimla (Himachal Pradesh). E-mail: ...
In September 2011 a 3 month long credit contest called “Give me some credit�? was hosted on the K... more In September 2011 a 3 month long credit contest called “Give me some credit�? was hosted on the Kaggle predictive modeling platform. This was the most popular Kaggle Crowdsourcing contest to date and had intense competition and drew out the best data scientists and credit scoring practitioners in the world to compete. The contest results supported the hypothesis that credit scoring is a commodity which can’t create sustainable competitive advantage. The survey data also provided insight into predictive modeling skill and the most important factors to optimal predictive modeling related to: optimal model selection (top 3 models used were hybrid models of random forest, support vector machines and gradient boosted machines), proficiency in predictive modeling, effort proxied by number of methods explored, team size (more people resulted in better models in general), and domain knowledge. Thus predictive model performance is a function is: Performance=Chosen Model (exploring multiple models and choosing best algorithm) Effort (Hard work) Predictive Modeling skill domain knowledge team work. The choice of the right kind of algorithm or model dominated performance the most and exploration of different approaches mattered more than backgrounds or experience.
Abstract: This paper uses synthetic datasets to classify the conditions in which random forest ma... more Abstract: This paper uses synthetic datasets to classify the conditions in which random forest may outperform more traditional techniques such as logistic regression. We explore the theoretical implications of these experimental findings, and work towards building a theory ...
Journal of Advance Research in Applied Science (ISSN: 2208-2352), 2014
The shadow hand is an advanced humanoid hand that uses hand movements and trajectory tracking to ... more The shadow hand is an advanced humanoid hand that uses hand movements and trajectory tracking to control the motion of shadow hand. The shadow hand will be integrated with 40 Air Muscles or 20 DC motors with the help of which it will move. The muscles will be in accordance allowing the hand to be used around soft or fragile objects. The hand will be shaped with touch sensors on finger tips to offer high sensitivity. This shadow hand robot has its various applications in household work, telepresence operations, bomb disarmament, military and medical purposes. Through this shadow hand bot we would also be able the problems faced by handicapped people.
International Journal of Oral Care and Research, 2020
One of the most common problems faced by clinicians in pediatric dentistry is to provide restorat... more One of the most common problems faced by clinicians in pediatric dentistry is to provide restorations in primary and young permanent teeth which are aesthetically acceptable, durable and cost effective. A wide range of crowns are available for this purpose and the selection of the most appropriate crown will help achieve better final outcomes of treatment. The vary widely from being the directly bondable to the tooth surface to crowns which are luted onto the tooth surface. They may also vary in composition from metal crowns with or without facings to resin, polycarbonate, and ceramic crowns. This review attempts to assimilate and bring out the varied array of pediatric crowns available in the published data for utilization by the pedodontist as per the needs of the patient. The knowledge of the available resources and the various advantages, disadvantages and properties of the same will go a long way in enhancing the clinician’s ability to make the most appropriate choice for the patient.
PURPOSE To describe clinical, radiological and functional outcomes of patients with post-tubercul... more PURPOSE To describe clinical, radiological and functional outcomes of patients with post-tubercular healed kyphosis operated by posterior-only three-column osteotomy. METHODS The hospital records of 47 patients from a single center, operated for healed, post-tubercular kyphosis were retrospectively analyzed. Deformity correction in all patients was done utilizing a three-column osteotomy by a single-stage, posterior-only approach. Radiological parameters (local kyphosis angle; KA, thoracic kyphosis; TK, lumbar lordosis; LL, pelvic tilt; PT, sacral slope; SS, C7 sagittal vertical axis; C7 SVA, pelvic incidence minus lumbar lordosis; PI-LL), functional scores and clinical details of complications were recorded. RESULTS The median age of the study population was 16 years (6-45). The apex of deformity was in thoracic, thoracolumbar and lumbar spine in 22, 19 and 6 cases, respectively. The mean operative time was 197.2 ± 30.5 min and the mean operative blood loss was 701 ± 312 ml. KA (preoperative: 68.2° ± 26.9° v/s postoperative: 29.6° ± 20.3°; p value < 0.0001), C7 SVA (preoperative 20.9 ± 37.9 mm v/s postoperative: 5.5 ± 16.3 mm; p value = 0.005) and TK (preoperative 47.7° ± 33.2° v/s postoperative: 37.8° ± 19.8°; p value = 0.0024) underwent a significant change with surgery. Mean SRS-22r score improved after surgical correction (preoperative: 2.7 ± 0.2 v/s final follow-up: 4 ± 0.2; p < 0.0001) with the maximum improvement occurring in self-image domain. The overall complication rate was 29.7%-including 4 neurological and 10 non-neurological complications. Permanent neurological deterioration was seen in one patient. CONCLUSION Three-column osteotomies through posterior-only approach are safe and effective and offer good clinic-radiological and function outcome in post-tubercular kyphotic deformity correction.
International Journal of Mathematics Trends and Technology, 2020
The Brachistochrone and Tautocrone problem is not new but it was one of the fundamental problems ... more The Brachistochrone and Tautocrone problem is not new but it was one of the fundamental problems given to the best mathematical minds in the world like Bernoulli brothers, L-hopital, Newton and Gottfried Leibnitz. As an enlightening fact the problem was both given and cracked by Johann Bernoulli. This was not just the foremost mathematical problem in the world but also the instigator of the branch of mathematics called as &quot;Calculus of variation&quot; and also proved many physical prodigies so, in essence this problem marked a breakthrough in the world of science. I have developed an approach based on the parity of both the Brachistochrone and Tautocrone curve that syndicates both of them which can further lead to mathematical progressions or can make new progresses in the field of physics.
International Journal of Economics and Business Research, 2021
In the 1950s and 1960s standard finance evolved and thereafter got wide acceptance among academia... more In the 1950s and 1960s standard finance evolved and thereafter got wide acceptance among academia. However, standard finance paradigm faced difficulties and was questioned, when cracks began to appear due to the growing market inefficiencies and the fact that humans are not always rational. Thus, the inherent flaws in traditional finance led to the emergence of behavioural finance, a new science which is a harmonious blend of research principles derived from subjects like finance, cognitive psychology, and behavioural economics. It propounds psychologically-based theories to illustrate stock market anomalies, its core focus is to study the erroneous or less than perfect human behaviour that influences individual investment decision and its subsequent effect on the market. This paper aims to critically analyse the traditional financial theories, how behavioural finance supplemented these theories by introducing behavioural aspects and also uncovers the psychological impact of individuals on their decision-making behaviour.
ObjectiveThe otolaryngology community has significant concerns regarding the spread of SARS‐CoV‐2... more ObjectiveThe otolaryngology community has significant concerns regarding the spread of SARS‐CoV‐2 through droplet contamination and viral aerosolization during head and neck examinations and procedures. The objective of this study was to investigate the droplet and splatter contamination from common otologic procedures.Study DesignCadaver simulation series.SettingDedicated surgical laboratory.MethodsTwo cadaver heads were prepped via bilateral middle cranial fossa approaches to the tegmen (n = 4). Fluorescein was instilled through a 4‐mm burr hole drilled into the middle cranial fossa floor, and presence in the middle ear was confirmed via microscopic ear examination. Myringotomy with ventilation tube placement and mastoidectomy were performed, and the distribution and distance of resulting droplet splatter patterns were systematically evaluated.ResultsThere were no fluorescein droplets or splatter contamination observed in the measured surgical field in any direction after myringot...
Purpose: To characterize performance among ED sites participating in the Emergency Quality Networ... more Purpose: To characterize performance among ED sites participating in the Emergency Quality Network (E-QUAL) Avoidable Imaging Initiative for clinical targets on the American College of Emergency Physicians Choosing Wisely list.
In many cases of sexual assault, traces of semen are left behind on the victim's body, clothe... more In many cases of sexual assault, traces of semen are left behind on the victim's body, clothes and the area in which the assault has taken place. The positive identification of semen is instrumental in supporting such cases. There are several methods of forensic examination of semen reported in literature, but the presence of blood complicates the identification of semen stains. This paper presents one such case study where the presence of blood makes DNA profiling more challenging as the PCR amplification becomes complicated, and the absolute differential isolation is the only way to get the clear profile using identifiler kits.
To determine the thickness of the calvarium in patients with spontaneous cerebrospinal fluid (CSF... more To determine the thickness of the calvarium in patients with spontaneous cerebrospinal fluid (CSF) leaks. Study Design: Case control study. Setting: University of Iowa Hospitals and Clinics. Patients: Those with a confirmed spontaneous CSF leak compared to non-obese (body mass index, BMI G 30) and obese (BMI Q 30) cochlear implant (CI) control groups. All patients had to have temporal bone CT scans that fit specified criteria. Intervention: Bilateral volumetric analysis of the squamous temporal bone and the zygoma in all patients. Assessment of patient age, sex, BMI, and medical comorbidities. Main Outcome Measure: Assessment of the average thickness of the squamous temporal bone and zygoma compared to control groups. Results: The average BMI of patients with spontaneous CSF leaks was significantly higher than non-obese CI controls (43.73 T 9.19 vs. 24.60 T 3.10; P G 0.0001). The calvarium in patients with spontaneous CSF leaks was 23% thinner than both non-obese CI controls (3.29 T 0.68 vs. 4.25 T 0.58; P G 0.0001) and obese CI controls (3.29 T 0.68 vs. 4.27 T 0.68; P G 0.0001). In addition, the skull thickness of obese CI patients (body mass index, BMI = 37.34 T 6.1) was not significantly different from non-obese CI controls (4.27 T 0.68 vs. 4.25 T 0.58; P = 0.92). The extracranial zygoma was not significantly different among the three groups (ANOVA = 0.9). In our study groups, 5.8% of both CI control groups had the diagnosis of obstructive sleep apnea (OSA), whereas 46.2% of the spontaneous CSF leak patients presented with the diagnosis of OSA. Conclusion: Patients with spontaneous CSF leak are more likely to be obese, have the diagnosis of OSA, and show thinning of their entire calvarium that is independent of BMI. These data suggest an additional obesity-associated intracranial process contributes to skull thinning.
Ethnographic Praxis in Industry Conference Proceedings, 2014
Here we consider design ethnography, and design fiction. We cast these two approaches, and the de... more Here we consider design ethnography, and design fiction. We cast these two approaches, and the design endeavor itself, as forward-looking processes. Exploring the means by which design ethnography and design fiction derive their value reveals the potential for a mutually beneficial symbiosis. Our thesis argues that design ethnography can provide design fiction with the methods required to operationalize the practice in industry contexts. Meanwhile design fiction can provide design ethnographers a novel way of extending the temporal scope of the practice, thus deriving actionable insights that are applicable further into the future. "While we are more than ever aware of both the promise and the threat of technological advance, we still lack the intellectual means and political tools for managing progress."
From the Department of General Surgery, Indira Gandhi Medical College and Hospital (IGMCH), Shiml... more From the Department of General Surgery, Indira Gandhi Medical College and Hospital (IGMCH), Shimla, HP, India. Reprints: Rajender Singh Jhobta, MBBS, MS, TRIBHUVAN, Oppo-site Mehta Petrol Pump, Sanjauli, Shimla (Himachal Pradesh). E-mail: ...
In September 2011 a 3 month long credit contest called “Give me some credit�? was hosted on the K... more In September 2011 a 3 month long credit contest called “Give me some credit�? was hosted on the Kaggle predictive modeling platform. This was the most popular Kaggle Crowdsourcing contest to date and had intense competition and drew out the best data scientists and credit scoring practitioners in the world to compete. The contest results supported the hypothesis that credit scoring is a commodity which can’t create sustainable competitive advantage. The survey data also provided insight into predictive modeling skill and the most important factors to optimal predictive modeling related to: optimal model selection (top 3 models used were hybrid models of random forest, support vector machines and gradient boosted machines), proficiency in predictive modeling, effort proxied by number of methods explored, team size (more people resulted in better models in general), and domain knowledge. Thus predictive model performance is a function is: Performance=Chosen Model (exploring multiple models and choosing best algorithm) Effort (Hard work) Predictive Modeling skill domain knowledge team work. The choice of the right kind of algorithm or model dominated performance the most and exploration of different approaches mattered more than backgrounds or experience.
Abstract: This paper uses synthetic datasets to classify the conditions in which random forest ma... more Abstract: This paper uses synthetic datasets to classify the conditions in which random forest may outperform more traditional techniques such as logistic regression. We explore the theoretical implications of these experimental findings, and work towards building a theory ...
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Papers by Dhruv Sharma