<p>Information on field scale soil erosion and related sedimentation process is ver... more <p>Information on field scale soil erosion and related sedimentation process is very important for natural resource management and sustainable farming. Plenty of models are available for study of these processes but only a few are suitable for dynamic small scale soil erosion assessments. The available models vary greatly in terms of their input requirements, analysis capabilities, process [t1] complexities, spatial and temporal scale of their intended use, practicality, the manner they represent the processes, and the type of output information they provide. The study aims in examining, theoretically, 51 models classified as physical, conceptual, and empirical based on their representation of the processes of soil erosion. The literature review shows that there is no specific model available for soil erosion prediction under agroforestry systems.   It is further suggested that models like EPIC, PERFECT, GUEST, EPM, TCRP, SLEMSA, APSIM, RillGrow, and CREAMS can be potentially used for soil erosion assessment at plot/field scale at daily time steps. Most of these models are capable to simulate the soil erosion process at small scale; further model development is needed regarding their limitations with respect to components interaction i.e., rainfall intensity, overland flow, crop cover, and their difficulties in upscaling. The research suggested that SIMPLACE network can provide modules with LintulBiomass, HillFlow, Runoff to develop new dynamic components to simulate overland flow and soil erosion incorporating improved upscaling capabilities</p>
A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially prese... more A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially presented to a hospital in Jerusalem with worsening constipation for two weeks. He had not had a bowel movement for three days and started having acute lower abdominal pain radiating to his left lower back. Initial evaluation revealed leukocytosis with a left shift. All remaining laboratory reports were within normal limits. A CT scan identified the jejunum on the right side with the cecum and colon on his left side, consistent with congenital intestinal malrotation. CT scan also showed evidence of terminal ileal and cecal wall thickening with a loculated retroperitoneal collection in the left lower quadrant (Fig. 1). The collection was determined to not be amenable to percutaneous drainage due to its location and internal loculations, so the patient was started on intravenous antibiotics, placed on an elemental diet and subsequently discharged on oral antibiotics. He returned to the United States with continued back pain requiring narcotic medications along with diarrhea and fecal urgency. Magnetic resonance enterography demonstrated congenital intestinal malrotation and a persistent multiloculated rim enhancing collection (6 · 6 cm) in the left hemipelvis abutting the psoas muscle with associated terminal ileal thickening, which was suspicious for Crohn’s disease and a possible fistula to the abscess cavity. No evidence of bowel obstruction or stricture was noted. After discussion with the interventional radiologists and the patient, it was decided to proceed with surgical drainage due to the probable futility of percutaneous approaches. The patient was taken to the operating room for a laparoscopic ileocolectomy and drainage of the retroperitoneal abscess for perforated Crohn’s disease and a concomitant laparoscopic Ladd’s procedure for congenital malrotation. We confirmed malrotation upon initial inspection of the abdomen through an umbilical trocar. The remaining ports were uniquely placed on the right side of the abdomen rather than the left, to perform a right hemicolectomy as shown in Figure 2. The small bowel was found to be on the right side of the abdomen with colon on the left side and Ladd’s bands extending across the small bowel from the right upper quadrant to the left lower quadrant, consistent with malrotation. The Ladd’s procedure was done first with division of the bands to free the cecum after which attention was turned toward mobilizing the cecum, ascending and transverse colon. The cecum was noted to be attached medially to the terminal ileum and foreshortened small bowel mesentery while laterally to the sigmoid colon. Once the colonic and ileal mesentery were lifted off the retroperitoneum and the mesentery was mobilized all the way up to the left upper abdomen, the abscess cavity in the retroperitoneum, located posterior to the mesentery of the ascending colon and terminal ileum and adjacent to the psoas muscle was entered. Purulence was evacuated and the cavity was thoroughly irrigated. A 5-cm incision was made by extending the midline trocar site cephalad and a wound protector was placed to deliver the diseased terminal ileum and ascending colon. The specimen was sent for pathology after division of the terminal ileum and ascending colon with a linear stapler. We performed an extracorporeal side-to-side, functional end-to-end anastomosis between healthy ileum and ascending colon after which it was replaced back into the abdominal cavity. The mesentery was sutured laparoscopically to prevent internal herniation and the bowel was tacked in multiple places to prevent further malrotation and future volvulus. The patient tolerated the procedure well, had an uneventful hospital course and was discharged tolerating Presented at the Southeastern Surgical Congress 2016 Annual Scientific Meeting, February 20–23, 2016, Atlanta, GA. Address correspondence and reprint requests to Atif Iqbal, M.D., Assistant Professor, Department of Surgery, University of Florida, Gainesville, FL 32610. E-mail: [email protected]. edu.
In this paper, we focused on designing a system that can guide and train a user in painting an ar... more In this paper, we focused on designing a system that can guide and train a user in painting an art work. Initially, we aim to develop a system which can guide a user with basic strokes of Korean language calligraphy. The proposed system is implemented in a sequence of three steps. Firstly, we collected the data from the surfaces of the canvas and different orientations of a painting brush. Then based on the data, a relationship is established among the collected parameters by building a machine learning model. Finally, actuators attached with the handle of the brush provides the vibrotactile and force feedback based on the built model. The actuator guides the user in order to paint the required object.
2021 IEEE Latin America Electron Devices Conference (LAEDC), 2021
In the present study, effect of heat sink configuration on the performance of the thermoelectric ... more In the present study, effect of heat sink configuration on the performance of the thermoelectric refrigerator system is studied. Heat Sink is one of the important components of the thermoelectric system, the configuration of which can directly affect the heat removal from the refrigeration system. Three different fin configurations are considered for the small-scale vaccine thermoelectric refrigerator. The mathematical modelling for thermoelectric cooler and the heat sink design is carried out to study the effect of the fin configuration, on the performance of the thermoelectric refrigerator.
2018 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)
A new sparse array structure based on the recently proposed thinned coprime arrays is proposed to... more A new sparse array structure based on the recently proposed thinned coprime arrays is proposed to maximize the number of unique lags. The design process involves two stages: the first stage displaces one subarray from its original position for an increase in the number of lags; as the displacement results in the minimum interelement spacing equal to integer multiples of half-wavelength, an additional sensor at a distance of half-wavelength is then added in the displaced subarray to avoid spatial aliasing. The strategic location of the additional sensor results in a significant increase in the overall unique lags which can be utilized for direction-of-arrival estimation (DOA) using compressive sensing based methods. Furthermore, the new structure has excellent performance in the presence of mutual coupling as shown by simulation results.
Abnormal bilirubin metabolism results in abnormally raised serum bilirubin level thus presenting ... more Abnormal bilirubin metabolism results in abnormally raised serum bilirubin level thus presenting as yellowing of face, skin and mucosa to varying degrees. Purpose: To observe clinical effects on neonatal jaundice of micro-ecological preparation combined with blue light irradiation. Study Design: Randomized control trial. Methodology: Enrolled 100 neonatal jaundiced children (50 each group). Control group received blue light irradiation while observation group was given probiotics on the basis of blue light irradiation. Percutaneous bilirubin levels, clinical efficacy and the incidence of side effects were compared between pre and post-treatment groups. Statistical analysis: Data analyzed by SPSS 20.0v. Results: Post-treatment, levels of percutaneous bilirubin were significantly lower than pre-treatment. Observational group had significantly lower levels than the control group, having significant p-value (P<0.05). However, total effective rate of the observational group was signif...
The live water storage of the reservoirs is decreasing by the sedimentation, which is affecting t... more The live water storage of the reservoirs is decreasing by the sedimentation, which is affecting the reservoir’s capacity and cause a severe problem for the irrigation system at the downstream side. Floods occur at the downstream by the poor management at upstream due to the heavy rainfall and snow melting. For annual accumulations of sediment load and estimation of the peak flow at Tarbela reservoir near Besham Qila station having area of 170,000 km2 was selected. Estimation of the peak flow and sediment yield at the Tarbela reservoir, SWAT (distributed hydrological model) was used. The expected decrease in reservoir storage capacity was also estimated with the SWAT model. For runoff modelling, calibration was done for three years (2004-2006) and validation was also done for three years (2007-2009). Nash-Sutcliffe Efficiency (NSE) and Standard Error of Estimate existed the statistical indices to evaluate the results. Coefficient of determination (R2) was found as 0.75 for the calibr...
The main objective of this study is to inspect such factors that affect the purchase intention of... more The main objective of this study is to inspect such factors that affect the purchase intention of consumer towards imported Japanese cars and to analyze generally prevailed perception about relative advantage of imported Japanese cars on locally assembled cars. Reliability is used in a sense of trustworthiness as it is the quality of being trustworthy or of performing consistently well. This research emphasizes the impact of four independent variables derived mainly from literature including brand awareness, brand association, perceived quality, and brand loyalty. The consumer’s purchase intention toward Japanese car in Pakistan is the dependent variable. This study used a questionnaire-based survey and respondents were evaluated on 5 points Likert scale ranging from 1-strongly disagree to 5-strongly agree. Total 165 questionnaires were distributed out of which 150 questionnaires were used. Further in this research convenience based sampling (non-probability) technique was used. Res...
The current research provides a perceptually transparent rendering algorithm for an ultrasound-ba... more The current research provides a perceptually transparent rendering algorithm for an ultrasound-based mid-air haptic device. In a series of experiments, we derive a systematic mapping function relating from the device command value to final user's perceived magnitude of a mid-air vibration feedback. The algorithm is designed for the ultrasonic mid-air haptic interface that is capable of displaying vibro-tactile feedback at a certain focal point in mid-air through ultrasound phased array technique. The perceived magnitude at the focal point is dependent on input parameters such as input command intensity, modulation frequency, and position of the focal point in the work-space. This algorithm automatically tunes these parameters to ensure that the desired perceived output at the user's hand is precisely controlled. Through a series of experiments, the effect of the aforementioned parameters on the physical output pressure are mapped, and the effect of this output pressure to the final perceived magnitude is formulated, resulting in the mapping from the different parameters to the perceived magnitude. Finally, the overall transparent rendering algorithm was evaluated, showing better perceptual quality than rendering with simple intensity command. Index Terms-Contact less haptics, force feedback, haptic perception, mid-air haptic feedback, psychophysics I. INTRODUCTION A NALOGOUS to vision perception where reflected light energy is sensed by light-sensitive membrane in the eyes, humans perceive haptic information by sensing physical, i.e, mechanical/thermal/chemical, energy through the respective sensors underneath the skin [1]. A haptic interface should synthetically generate this physical energy and deliver them to the user's target body part. In general, these haptic related physical signals take mechanical coupling as a delivery medium, and Manuscript received Month xx, 2xxx; revised Month xx, xxxx; accepted Month x, xxxx.
Balloon occlusion of the aorta was first described by C.W. Hughes in 1954, when it was used as a ... more Balloon occlusion of the aorta was first described by C.W. Hughes in 1954, when it was used as a tamponade device for three wounded soldiers during the Korean War suffering from intra-abdominal hemorrhage. Currently, the device is indicated in trauma patients as a surrogate for resuscitative thoracotomy. Brenner et al. reported a case series describing the use of resuscitative endovascular balloon occlusion of the aorta (REBOA) in advanced hemorrhagic shock. Their conclusion was that "it is a feasible method for proximal aortic control." We describe the novel use of REBOA before retroperitoneal hematoma exploration in a hemodynamically unstable patient. Reported is a 19-year-old blunt trauma victim where REBOA was successfully deployed as a means for proximal arterial control before a Zone 1 retroperitoneal hematoma exploration. The source of the patient's hemorrhagic shock was multifactorial: grade V hepatic injury, retrohepatic inferior vena cava laceration, and righ...
A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially prese... more A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially presented to a hospital in Jerusalem with worsening constipation for two weeks. He had not had a bowel movement for three days and started having acute lower abdominal pain radiating to his left lower back. Initial evaluation revealed leukocytosis with a left shift. All remaining laboratory reports were within normal limits. A CT scan identified the jejunum on the right side with the cecum and colon on his left side, consistent with congenital intestinal malrotation. CT scan also showed evidence of terminal ileal and cecal wall thickening with a loculated retroperitoneal collection in the left lower quadrant (Fig. 1). The collection was determined to not be amenable to percutaneous drainage due to its location and internal loculations, so the patient was started on intravenous antibiotics, placed on an elemental diet and subsequently discharged on oral antibiotics. He returned to the United States with continued back pain requiring narcotic medications along with diarrhea and fecal urgency. Magnetic resonance enterography demonstrated congenital intestinal malrotation and a persistent multiloculated rim enhancing collection (6 · 6 cm) in the left hemipelvis abutting the psoas muscle with associated terminal ileal thickening, which was suspicious for Crohn’s disease and a possible fistula to the abscess cavity. No evidence of bowel obstruction or stricture was noted. After discussion with the interventional radiologists and the patient, it was decided to proceed with surgical drainage due to the probable futility of percutaneous approaches. The patient was taken to the operating room for a laparoscopic ileocolectomy and drainage of the retroperitoneal abscess for perforated Crohn’s disease and a concomitant laparoscopic Ladd’s procedure for congenital malrotation. We confirmed malrotation upon initial inspection of the abdomen through an umbilical trocar. The remaining ports were uniquely placed on the right side of the abdomen rather than the left, to perform a right hemicolectomy as shown in Figure 2. The small bowel was found to be on the right side of the abdomen with colon on the left side and Ladd’s bands extending across the small bowel from the right upper quadrant to the left lower quadrant, consistent with malrotation. The Ladd’s procedure was done first with division of the bands to free the cecum after which attention was turned toward mobilizing the cecum, ascending and transverse colon. The cecum was noted to be attached medially to the terminal ileum and foreshortened small bowel mesentery while laterally to the sigmoid colon. Once the colonic and ileal mesentery were lifted off the retroperitoneum and the mesentery was mobilized all the way up to the left upper abdomen, the abscess cavity in the retroperitoneum, located posterior to the mesentery of the ascending colon and terminal ileum and adjacent to the psoas muscle was entered. Purulence was evacuated and the cavity was thoroughly irrigated. A 5-cm incision was made by extending the midline trocar site cephalad and a wound protector was placed to deliver the diseased terminal ileum and ascending colon. The specimen was sent for pathology after division of the terminal ileum and ascending colon with a linear stapler. We performed an extracorporeal side-to-side, functional end-to-end anastomosis between healthy ileum and ascending colon after which it was replaced back into the abdominal cavity. The mesentery was sutured laparoscopically to prevent internal herniation and the bowel was tacked in multiple places to prevent further malrotation and future volvulus. The patient tolerated the procedure well, had an uneventful hospital course and was discharged tolerating Presented at the Southeastern Surgical Congress 2016 Annual Scientific Meeting, February 20–23, 2016, Atlanta, GA. Address correspondence and reprint requests to Atif Iqbal, M.D., Assistant Professor, Department of Surgery, University of Florida, Gainesville, FL 32610. E-mail: [email protected]. edu.
INTRODUCTION: Metastatic malignancy to heart is 20-40 times more common that primary heart malign... more INTRODUCTION: Metastatic malignancy to heart is 20-40 times more common that primary heart malignancy. Recurrence of right ventricular myxoma is extremely rare. Its incidence is about 3% of patients with sporadic. We report here a unique case of recurrent right ventricular myxoma in addition to a blood clot in right ventricle.
Cerebral cortex (New York, N.Y. : 1991), Jan 22, 2016
Parvalbumin-positive (PV) basket cells provide perisomatic inhibition in the cortex and hippocamp... more Parvalbumin-positive (PV) basket cells provide perisomatic inhibition in the cortex and hippocampus and control generation of memory-related network activity patterns, such as sharp wave ripples (SPW-R). Deterioration of this class of fast-spiking interneurons has been observed in neuropsychiatric disorders and evidence from animal models suggests their involvement in the acquisition and extinction of fear memories. Here, we used mice with neuron type-targeted expression of the presynaptic gain-of-function glycine receptor RNA variant GlyR α3L(185L) to genetically enhance the network activity of PV interneurons. These mice showed reduced extinction of contextual fear memory but normal auditory cued fear memory. They furthermore displayed increase of SPW-R activity in area CA3 and CA1 and facilitated propagation of this particular network activity pattern, as determined in ventral hippocampal slice preparations. Individual freezing levels during extinction and SPW-R propagation were ...
In this paper, two methods have been reviewed to solve the near-field wideband beam former design... more In this paper, two methods have been reviewed to solve the near-field wideband beam former design problem with frequency invariant response. The two problem solving methods are Convex Optimization and Least Square formulation based on orthogonal decomposition of coefficient vector. The purpose of this research is to achieve near field wideband frequency invariant design based on these methods and analyse their performance. The methodology works by considering a required minimum side lobe attenuation level, minimum threshold level of frequency invariance, fixed number of sensors and taps to provide weight vectors that can satisfy the design constraints. Design examples have been provided for simulated results.
Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, 2011
In this paper, a convex-optimiDtion based design method is proposed to solve the near-field wideb... more In this paper, a convex-optimiDtion based design method is proposed to solve the near-field wideband beam former design problem with frequency invariant response. The obj ective is to find the weight vectors required for a uniform circular array capable of forming a beam with a pre defined side lobe attenuation level with desired frequency invariant response over a frequency band of interest against a particular target frequency for an arbitrary focal point within a given scanning area. Design examples have been provided for simulated results.
2012 15th International Multitopic Conference (INMIC), 2012
CUBIC is one of the most popular version of TCP being used by many flavours of Linux now a days. ... more CUBIC is one of the most popular version of TCP being used by many flavours of Linux now a days. CUBIC [6] is an enhanced version of BIC TCP (Binary Increase Congestion Transmission Control Protocol) ??. To enhance the scalability of TCP in long distance network scenarios, CUBIC modified the linear window growth function of standard TCP to cubic [6] function. During communication, CUBIC decreases the size of congestion windows (cwnd) at Saturation-States and increases its size instantly at Stable-States. CUBIC protocol keeps the window-increase- rate independent of RTT, which helps the protocol TCP friendly in short and long RTTs. When the CUBIC window-growth-function is slower than standard TCP, CUBIC [6] behaves like standard TCP in order to provide fairness to standard TCP. In this Paper, CUBIC performance evaluation is done by Network Simulator-2 experiments. As this is a survey paper, performance analysis of other TCP versions is also discussed.
&lt;p&gt;Information on field scale soil erosion and related sedimentation process is ver... more &lt;p&gt;Information on field scale soil erosion and related sedimentation process is very important for natural resource management and sustainable farming. Plenty of models are available for study of these processes but only a few are suitable for dynamic small scale soil erosion assessments. The available models vary greatly in terms of their input requirements, analysis capabilities, process [t1] complexities, spatial and temporal scale of their intended use, practicality, the manner they represent the processes, and the type of output information they provide. The study aims in examining, theoretically, 51 models classified as physical, conceptual, and empirical based on their representation of the processes of soil erosion. The literature review shows that there is no specific model available for soil erosion prediction under agroforestry systems. &amp;#160;&amp;#160;It is further suggested that models like EPIC, PERFECT, GUEST, EPM, TCRP, SLEMSA, APSIM, RillGrow, and CREAMS can be potentially used for soil erosion assessment at plot/field scale at daily time steps. Most of these models are capable to simulate the soil erosion process at small scale; further model development is needed regarding their limitations with respect to components interaction i.e., rainfall intensity, overland flow, crop cover, and their difficulties in upscaling. The research suggested that SIMPLACE network can provide modules with LintulBiomass, HillFlow, Runoff to develop new dynamic components to simulate overland flow and soil erosion incorporating improved upscaling capabilities&lt;/p&gt;
A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially prese... more A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially presented to a hospital in Jerusalem with worsening constipation for two weeks. He had not had a bowel movement for three days and started having acute lower abdominal pain radiating to his left lower back. Initial evaluation revealed leukocytosis with a left shift. All remaining laboratory reports were within normal limits. A CT scan identified the jejunum on the right side with the cecum and colon on his left side, consistent with congenital intestinal malrotation. CT scan also showed evidence of terminal ileal and cecal wall thickening with a loculated retroperitoneal collection in the left lower quadrant (Fig. 1). The collection was determined to not be amenable to percutaneous drainage due to its location and internal loculations, so the patient was started on intravenous antibiotics, placed on an elemental diet and subsequently discharged on oral antibiotics. He returned to the United States with continued back pain requiring narcotic medications along with diarrhea and fecal urgency. Magnetic resonance enterography demonstrated congenital intestinal malrotation and a persistent multiloculated rim enhancing collection (6 · 6 cm) in the left hemipelvis abutting the psoas muscle with associated terminal ileal thickening, which was suspicious for Crohn’s disease and a possible fistula to the abscess cavity. No evidence of bowel obstruction or stricture was noted. After discussion with the interventional radiologists and the patient, it was decided to proceed with surgical drainage due to the probable futility of percutaneous approaches. The patient was taken to the operating room for a laparoscopic ileocolectomy and drainage of the retroperitoneal abscess for perforated Crohn’s disease and a concomitant laparoscopic Ladd’s procedure for congenital malrotation. We confirmed malrotation upon initial inspection of the abdomen through an umbilical trocar. The remaining ports were uniquely placed on the right side of the abdomen rather than the left, to perform a right hemicolectomy as shown in Figure 2. The small bowel was found to be on the right side of the abdomen with colon on the left side and Ladd’s bands extending across the small bowel from the right upper quadrant to the left lower quadrant, consistent with malrotation. The Ladd’s procedure was done first with division of the bands to free the cecum after which attention was turned toward mobilizing the cecum, ascending and transverse colon. The cecum was noted to be attached medially to the terminal ileum and foreshortened small bowel mesentery while laterally to the sigmoid colon. Once the colonic and ileal mesentery were lifted off the retroperitoneum and the mesentery was mobilized all the way up to the left upper abdomen, the abscess cavity in the retroperitoneum, located posterior to the mesentery of the ascending colon and terminal ileum and adjacent to the psoas muscle was entered. Purulence was evacuated and the cavity was thoroughly irrigated. A 5-cm incision was made by extending the midline trocar site cephalad and a wound protector was placed to deliver the diseased terminal ileum and ascending colon. The specimen was sent for pathology after division of the terminal ileum and ascending colon with a linear stapler. We performed an extracorporeal side-to-side, functional end-to-end anastomosis between healthy ileum and ascending colon after which it was replaced back into the abdominal cavity. The mesentery was sutured laparoscopically to prevent internal herniation and the bowel was tacked in multiple places to prevent further malrotation and future volvulus. The patient tolerated the procedure well, had an uneventful hospital course and was discharged tolerating Presented at the Southeastern Surgical Congress 2016 Annual Scientific Meeting, February 20–23, 2016, Atlanta, GA. Address correspondence and reprint requests to Atif Iqbal, M.D., Assistant Professor, Department of Surgery, University of Florida, Gainesville, FL 32610. E-mail: [email protected]. edu.
In this paper, we focused on designing a system that can guide and train a user in painting an ar... more In this paper, we focused on designing a system that can guide and train a user in painting an art work. Initially, we aim to develop a system which can guide a user with basic strokes of Korean language calligraphy. The proposed system is implemented in a sequence of three steps. Firstly, we collected the data from the surfaces of the canvas and different orientations of a painting brush. Then based on the data, a relationship is established among the collected parameters by building a machine learning model. Finally, actuators attached with the handle of the brush provides the vibrotactile and force feedback based on the built model. The actuator guides the user in order to paint the required object.
2021 IEEE Latin America Electron Devices Conference (LAEDC), 2021
In the present study, effect of heat sink configuration on the performance of the thermoelectric ... more In the present study, effect of heat sink configuration on the performance of the thermoelectric refrigerator system is studied. Heat Sink is one of the important components of the thermoelectric system, the configuration of which can directly affect the heat removal from the refrigeration system. Three different fin configurations are considered for the small-scale vaccine thermoelectric refrigerator. The mathematical modelling for thermoelectric cooler and the heat sink design is carried out to study the effect of the fin configuration, on the performance of the thermoelectric refrigerator.
2018 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)
A new sparse array structure based on the recently proposed thinned coprime arrays is proposed to... more A new sparse array structure based on the recently proposed thinned coprime arrays is proposed to maximize the number of unique lags. The design process involves two stages: the first stage displaces one subarray from its original position for an increase in the number of lags; as the displacement results in the minimum interelement spacing equal to integer multiples of half-wavelength, an additional sensor at a distance of half-wavelength is then added in the displaced subarray to avoid spatial aliasing. The strategic location of the additional sensor results in a significant increase in the overall unique lags which can be utilized for direction-of-arrival estimation (DOA) using compressive sensing based methods. Furthermore, the new structure has excellent performance in the presence of mutual coupling as shown by simulation results.
Abnormal bilirubin metabolism results in abnormally raised serum bilirubin level thus presenting ... more Abnormal bilirubin metabolism results in abnormally raised serum bilirubin level thus presenting as yellowing of face, skin and mucosa to varying degrees. Purpose: To observe clinical effects on neonatal jaundice of micro-ecological preparation combined with blue light irradiation. Study Design: Randomized control trial. Methodology: Enrolled 100 neonatal jaundiced children (50 each group). Control group received blue light irradiation while observation group was given probiotics on the basis of blue light irradiation. Percutaneous bilirubin levels, clinical efficacy and the incidence of side effects were compared between pre and post-treatment groups. Statistical analysis: Data analyzed by SPSS 20.0v. Results: Post-treatment, levels of percutaneous bilirubin were significantly lower than pre-treatment. Observational group had significantly lower levels than the control group, having significant p-value (P<0.05). However, total effective rate of the observational group was signif...
The live water storage of the reservoirs is decreasing by the sedimentation, which is affecting t... more The live water storage of the reservoirs is decreasing by the sedimentation, which is affecting the reservoir’s capacity and cause a severe problem for the irrigation system at the downstream side. Floods occur at the downstream by the poor management at upstream due to the heavy rainfall and snow melting. For annual accumulations of sediment load and estimation of the peak flow at Tarbela reservoir near Besham Qila station having area of 170,000 km2 was selected. Estimation of the peak flow and sediment yield at the Tarbela reservoir, SWAT (distributed hydrological model) was used. The expected decrease in reservoir storage capacity was also estimated with the SWAT model. For runoff modelling, calibration was done for three years (2004-2006) and validation was also done for three years (2007-2009). Nash-Sutcliffe Efficiency (NSE) and Standard Error of Estimate existed the statistical indices to evaluate the results. Coefficient of determination (R2) was found as 0.75 for the calibr...
The main objective of this study is to inspect such factors that affect the purchase intention of... more The main objective of this study is to inspect such factors that affect the purchase intention of consumer towards imported Japanese cars and to analyze generally prevailed perception about relative advantage of imported Japanese cars on locally assembled cars. Reliability is used in a sense of trustworthiness as it is the quality of being trustworthy or of performing consistently well. This research emphasizes the impact of four independent variables derived mainly from literature including brand awareness, brand association, perceived quality, and brand loyalty. The consumer’s purchase intention toward Japanese car in Pakistan is the dependent variable. This study used a questionnaire-based survey and respondents were evaluated on 5 points Likert scale ranging from 1-strongly disagree to 5-strongly agree. Total 165 questionnaires were distributed out of which 150 questionnaires were used. Further in this research convenience based sampling (non-probability) technique was used. Res...
The current research provides a perceptually transparent rendering algorithm for an ultrasound-ba... more The current research provides a perceptually transparent rendering algorithm for an ultrasound-based mid-air haptic device. In a series of experiments, we derive a systematic mapping function relating from the device command value to final user's perceived magnitude of a mid-air vibration feedback. The algorithm is designed for the ultrasonic mid-air haptic interface that is capable of displaying vibro-tactile feedback at a certain focal point in mid-air through ultrasound phased array technique. The perceived magnitude at the focal point is dependent on input parameters such as input command intensity, modulation frequency, and position of the focal point in the work-space. This algorithm automatically tunes these parameters to ensure that the desired perceived output at the user's hand is precisely controlled. Through a series of experiments, the effect of the aforementioned parameters on the physical output pressure are mapped, and the effect of this output pressure to the final perceived magnitude is formulated, resulting in the mapping from the different parameters to the perceived magnitude. Finally, the overall transparent rendering algorithm was evaluated, showing better perceptual quality than rendering with simple intensity command. Index Terms-Contact less haptics, force feedback, haptic perception, mid-air haptic feedback, psychophysics I. INTRODUCTION A NALOGOUS to vision perception where reflected light energy is sensed by light-sensitive membrane in the eyes, humans perceive haptic information by sensing physical, i.e, mechanical/thermal/chemical, energy through the respective sensors underneath the skin [1]. A haptic interface should synthetically generate this physical energy and deliver them to the user's target body part. In general, these haptic related physical signals take mechanical coupling as a delivery medium, and Manuscript received Month xx, 2xxx; revised Month xx, xxxx; accepted Month x, xxxx.
Balloon occlusion of the aorta was first described by C.W. Hughes in 1954, when it was used as a ... more Balloon occlusion of the aorta was first described by C.W. Hughes in 1954, when it was used as a tamponade device for three wounded soldiers during the Korean War suffering from intra-abdominal hemorrhage. Currently, the device is indicated in trauma patients as a surrogate for resuscitative thoracotomy. Brenner et al. reported a case series describing the use of resuscitative endovascular balloon occlusion of the aorta (REBOA) in advanced hemorrhagic shock. Their conclusion was that "it is a feasible method for proximal aortic control." We describe the novel use of REBOA before retroperitoneal hematoma exploration in a hemodynamically unstable patient. Reported is a 19-year-old blunt trauma victim where REBOA was successfully deployed as a means for proximal arterial control before a Zone 1 retroperitoneal hematoma exploration. The source of the patient's hemorrhagic shock was multifactorial: grade V hepatic injury, retrohepatic inferior vena cava laceration, and righ...
A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially prese... more A healthy 18-year-old male, with no family history of inflammatory bowel disease, initially presented to a hospital in Jerusalem with worsening constipation for two weeks. He had not had a bowel movement for three days and started having acute lower abdominal pain radiating to his left lower back. Initial evaluation revealed leukocytosis with a left shift. All remaining laboratory reports were within normal limits. A CT scan identified the jejunum on the right side with the cecum and colon on his left side, consistent with congenital intestinal malrotation. CT scan also showed evidence of terminal ileal and cecal wall thickening with a loculated retroperitoneal collection in the left lower quadrant (Fig. 1). The collection was determined to not be amenable to percutaneous drainage due to its location and internal loculations, so the patient was started on intravenous antibiotics, placed on an elemental diet and subsequently discharged on oral antibiotics. He returned to the United States with continued back pain requiring narcotic medications along with diarrhea and fecal urgency. Magnetic resonance enterography demonstrated congenital intestinal malrotation and a persistent multiloculated rim enhancing collection (6 · 6 cm) in the left hemipelvis abutting the psoas muscle with associated terminal ileal thickening, which was suspicious for Crohn’s disease and a possible fistula to the abscess cavity. No evidence of bowel obstruction or stricture was noted. After discussion with the interventional radiologists and the patient, it was decided to proceed with surgical drainage due to the probable futility of percutaneous approaches. The patient was taken to the operating room for a laparoscopic ileocolectomy and drainage of the retroperitoneal abscess for perforated Crohn’s disease and a concomitant laparoscopic Ladd’s procedure for congenital malrotation. We confirmed malrotation upon initial inspection of the abdomen through an umbilical trocar. The remaining ports were uniquely placed on the right side of the abdomen rather than the left, to perform a right hemicolectomy as shown in Figure 2. The small bowel was found to be on the right side of the abdomen with colon on the left side and Ladd’s bands extending across the small bowel from the right upper quadrant to the left lower quadrant, consistent with malrotation. The Ladd’s procedure was done first with division of the bands to free the cecum after which attention was turned toward mobilizing the cecum, ascending and transverse colon. The cecum was noted to be attached medially to the terminal ileum and foreshortened small bowel mesentery while laterally to the sigmoid colon. Once the colonic and ileal mesentery were lifted off the retroperitoneum and the mesentery was mobilized all the way up to the left upper abdomen, the abscess cavity in the retroperitoneum, located posterior to the mesentery of the ascending colon and terminal ileum and adjacent to the psoas muscle was entered. Purulence was evacuated and the cavity was thoroughly irrigated. A 5-cm incision was made by extending the midline trocar site cephalad and a wound protector was placed to deliver the diseased terminal ileum and ascending colon. The specimen was sent for pathology after division of the terminal ileum and ascending colon with a linear stapler. We performed an extracorporeal side-to-side, functional end-to-end anastomosis between healthy ileum and ascending colon after which it was replaced back into the abdominal cavity. The mesentery was sutured laparoscopically to prevent internal herniation and the bowel was tacked in multiple places to prevent further malrotation and future volvulus. The patient tolerated the procedure well, had an uneventful hospital course and was discharged tolerating Presented at the Southeastern Surgical Congress 2016 Annual Scientific Meeting, February 20–23, 2016, Atlanta, GA. Address correspondence and reprint requests to Atif Iqbal, M.D., Assistant Professor, Department of Surgery, University of Florida, Gainesville, FL 32610. E-mail: [email protected]. edu.
INTRODUCTION: Metastatic malignancy to heart is 20-40 times more common that primary heart malign... more INTRODUCTION: Metastatic malignancy to heart is 20-40 times more common that primary heart malignancy. Recurrence of right ventricular myxoma is extremely rare. Its incidence is about 3% of patients with sporadic. We report here a unique case of recurrent right ventricular myxoma in addition to a blood clot in right ventricle.
Cerebral cortex (New York, N.Y. : 1991), Jan 22, 2016
Parvalbumin-positive (PV) basket cells provide perisomatic inhibition in the cortex and hippocamp... more Parvalbumin-positive (PV) basket cells provide perisomatic inhibition in the cortex and hippocampus and control generation of memory-related network activity patterns, such as sharp wave ripples (SPW-R). Deterioration of this class of fast-spiking interneurons has been observed in neuropsychiatric disorders and evidence from animal models suggests their involvement in the acquisition and extinction of fear memories. Here, we used mice with neuron type-targeted expression of the presynaptic gain-of-function glycine receptor RNA variant GlyR α3L(185L) to genetically enhance the network activity of PV interneurons. These mice showed reduced extinction of contextual fear memory but normal auditory cued fear memory. They furthermore displayed increase of SPW-R activity in area CA3 and CA1 and facilitated propagation of this particular network activity pattern, as determined in ventral hippocampal slice preparations. Individual freezing levels during extinction and SPW-R propagation were ...
In this paper, two methods have been reviewed to solve the near-field wideband beam former design... more In this paper, two methods have been reviewed to solve the near-field wideband beam former design problem with frequency invariant response. The two problem solving methods are Convex Optimization and Least Square formulation based on orthogonal decomposition of coefficient vector. The purpose of this research is to achieve near field wideband frequency invariant design based on these methods and analyse their performance. The methodology works by considering a required minimum side lobe attenuation level, minimum threshold level of frequency invariance, fixed number of sensors and taps to provide weight vectors that can satisfy the design constraints. Design examples have been provided for simulated results.
Proceedings of 2011 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference, 2011
In this paper, a convex-optimiDtion based design method is proposed to solve the near-field wideb... more In this paper, a convex-optimiDtion based design method is proposed to solve the near-field wideband beam former design problem with frequency invariant response. The obj ective is to find the weight vectors required for a uniform circular array capable of forming a beam with a pre defined side lobe attenuation level with desired frequency invariant response over a frequency band of interest against a particular target frequency for an arbitrary focal point within a given scanning area. Design examples have been provided for simulated results.
2012 15th International Multitopic Conference (INMIC), 2012
CUBIC is one of the most popular version of TCP being used by many flavours of Linux now a days. ... more CUBIC is one of the most popular version of TCP being used by many flavours of Linux now a days. CUBIC [6] is an enhanced version of BIC TCP (Binary Increase Congestion Transmission Control Protocol) ??. To enhance the scalability of TCP in long distance network scenarios, CUBIC modified the linear window growth function of standard TCP to cubic [6] function. During communication, CUBIC decreases the size of congestion windows (cwnd) at Saturation-States and increases its size instantly at Stable-States. CUBIC protocol keeps the window-increase- rate independent of RTT, which helps the protocol TCP friendly in short and long RTTs. When the CUBIC window-growth-function is slower than standard TCP, CUBIC [6] behaves like standard TCP in order to provide fairness to standard TCP. In this Paper, CUBIC performance evaluation is done by Network Simulator-2 experiments. As this is a survey paper, performance analysis of other TCP versions is also discussed.
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Papers by Ahsan Raza