Automated Top View Registration of Broadcast Football Videos

In this paper, we propose a novel method to register football broadcast video frames on the static top view model of the playing surface. The proposed method is fully automatic in contrast to the current state of the art which requires manual initialization of point correspondences between the image and the static model. Automatic registration using existing approaches has been difficult due to the lack of sufficient point correspondences. We investigate an alternate approach exploiting the edge information from the line markings on the field. We formulate the registration problem as a nearest neighbour search over a synthetically generated dictionary of edge map and homography pairs. The synthetic dictionary generation allows us to exhaustively cover a wide variety of camera angles and positions and reduce this problem to a minimal per-frame edge map matching procedure. We show that the per-frame results can be improved in videos using an optimization framework for temporal camera stabilization. We demonstrate the efficacy of our approach by presenting extensive results on a dataset collected from matches of football World Cup 2014

Transperineal ultrasonography in stress urinary incontinence

Background: The aim of our study is to assess, using transperineal ultrasonography, amount of bladder neck mobility using rotational angles; represented by the difference in the anterior (α angle) and posterior urethral angles (β angle) and proximal pubourethral distance at rest and straining, in stress urinary incontinence and control group, to ascertain if there are significant differences in their values between the groups.Methods: In all, 24 women with SUI (SUI group) and 20 continent women (control group) were included. Transperineal ultrasonography was performed at rest and straining (Valsalva manoeuver), and the threshold value for the urethral angles (α and β angles) and proximal pubourethral distance for each group were estimated.Results: A significant difference was found in calculating the numerical value of the increment of both α and β angles in both groups, at rest and at straining (rotation angle α and rotation angle β (Rα and Rβ)). Higher rotation angles were seen in the SUI group for both the α angle and the β angle compared with those of the control group; mean (SD) Rα SUI 29.37±7.46 vs. controls 10.83±3.46°; and Rβ SUI 27.97±7.47 vs. controls 13.00±3.16°; p<0.01. There was also significant difference in proximal pubourethral distance (<0.01) during resting and straining phases in patients with SUI.Conclusions: Rotational angles and pubourethral distance helps in evaluation of stress urinary incontinence and reduces the need of urodynamic studies

Parametric identification of nonlinear fractional Hammerstein models

In this paper, a system identification method for continuous fractional-order Hammerstein models is proposed. A block structured nonlinear system constituting a static nonlinear block followed by a fractional-order linear dynamic system is considered. The fractional differential operator is represented through the generalized operational matrix of block pulse functions to reduce computational complexity. A special test signal is developed to isolate the identification of the nonlinear static function from that of the fractional-order linear dynamic system. The merit of the proposed technique is indicated by concurrent identification of the fractional order with linear system coefficients, algebraic representation of the immeasurable nonlinear static function output, and permitting use of non-iterative procedures for identification of the nonlinearity. The efficacy of the proposed method is exhibited through simulation at various signal-to-noise ratios

Identification scheme for fractional Hammerstein Models with the delayed Haar Wavelet

The parameter identification of a nonlinear Hammerstein-type process is likely to be complex and challenging due to the existence of significant nonlinearity at the input side. In this paper, a new parameter identification strategy for a block-oriented Hammerstein process is proposed using the Haar wavelet operational matrix (HWOM). To determine all the parameters in the Hammerstein model, a special input excitation is utilized to separate the identification problem of the linear subsystem from the complete nonlinear process. During the first test period, a simple step response data is utilized to estimate the linear subsystem dynamics. Then, the overall system response to sinusoidal input is used to estimate nonlinearity in the process. A single-pole fractional order transfer function with time delay is used to model the linear subsystem. In order to reduce the mathematical complexity resulting from the fractional derivatives of signals, a HWOM based algebraic approach is developed. The proposed method is proven to be simple and robust in the presence of measurement noises. The numerical study illustrates the efficiency of the proposed modeling technique through four different nonlinear processes and results are compared with existing methods

Proposed Route to Cyclopenta[c]thiophenes via Activated Methylene

The synthesis of cyclopenta[c]thiophenes has been sparsely reported in the literature owing to several difficulties involved in their synthesis. The present work involves the proposed synthesis of cyclopenta[c]thiophenes and their precursors using activated methylene. Cyclopenta[c]thiophene compounds show promise in the field of polymer and catalysis chemistry. These substituted polythiophenes are potential organic semiconductors and anti-tumor agents. The research presented shows the successful and novel conversion of 3,4-bis(chloromethyl)-2,5-dimethylthiophene and 3,4-bis(bromomethyl)-2,5-dimethylthiophene to a fused 5,5\u27-fused membered ring which is the precursor to cyclopenta[c]thiophene the sulfone ester, 5-carbomethoxy-5- phenylsulfonyl-1,3-dimethyl-5,6-dihydro-4H-cyclopenta[c]thiophene, in just two steps as compared to four steps previously reported in the literature. This valuable precursor intermediate currently made and proven by characterization is one synthetic step away from a substituted cyclopenta[c]thiophene. A paper has been submitted to Letters in Organic Chemistry to report our work

A retrospective study on ectopic pregnancy aspiration by transvaginal ultrasound at Institute of Kidney Diseases And Research Centre

Background: Majority of the reports suggest that the frequency of ectopic pregnancies have grown in the last 30 years, especially in patients conceived through artificial reproductive techniques (ART). To prevent severe morbidity and mortality its prompt diagnosis and appropriate management is important. In a select patient population, most of the unruptured, live ectopic pregnancies can be successfully managed without surgical intervention using trans-vaginal ultrasound guided aspiration and instillation of local injection KCl or administration of systemic Inj. Methotrexate. Methods: This study is a hospital based retrospective cohort study from January 2014 to December 2022 on patients who presented to Institute of Kidney Diseases and Research Centre (IKDRC) with unruptured ectopic pregnancy confirmed with ultrasound and β HCG. All the patients were analyzed according to history, clinical presentation, investigations, treatment and complications. Results: β-HCG day 1 or 2 post procedure dropped in all cases but in variable levels ranging from 1.3% to 85.88%, while the drop during days 7-10, was more significant and reassuring; ranged from 48.69% to 98.95%. Conclusions: By aspiration of ectopic gestational sac transvaginally under ultrasonographic guidance it is able to preserve the integrity of uterus and fallopian tube and thus the future fertility. The study will educate other healthcare professionals.

Luteoma in pregnancy: a rare cause of threatened preterm labour!

Pregnancy luteoma is a rare non-neoplastic tumor-like mass of the ovary. They are usually asymptomatic and found incidentally during ultrasound imaging or surgery. Rarely do they present with pain abdomen mimicking threatened preterm labor. They regress spontaneously after delivery. We presented a case of a 29-year-old G4A3 with twin pregnancies and chronic hypertension who presented with acute flank pain, constipation, and occasional hardening of the uterus. A provisional diagnosis threatened preterm labor with suspected ureteric colic and cystitis was made. The patient was initially managed on the same line but on a detailed in-patient evaluation her ultrasound revealed bilateral multicystic ovaries with few hypoechoic areas inside it mostly suggestive of ‘luteoma of pregnancy’. The patient had acne, hirsutism, and chronic hypertension well controlled on antihypertensives. The patient delivered twins successfully by cesarean section and luteoma and symptoms were resolved postpartum after 4 months. Recognition of this entity is important so that malignancy can be ruled out and unnecessary surgery, with concomitant risk to both the mother and the fetus, is avoided

Study of intravenous ferric carboxy maltose in iron deficiency anemia in women attending gynecological clinic - safety and efficacy

Background: Several intravenous iron preparations are available for the treatment of iron deficiency anemia (IDA). Some of these require multiple small infusions to prevent labile iron reactions while iron dextran (DEX) is associated with a risk of potentially serious anaphylactic reactions. Ferric carboxymaltose (FCM), a nondextran intravenous iron, is an effective and a safe option which can be administered in high single doses without serious adverse effects.Methods: It was a prospective study including 150 women of age >18 years with a definitive diagnosis of IDA and Hemoglobin (Hb) between 7-10 gm% from December 2013 to October 2014.Out of these, eleven women were lost to follow up and were excluded from the study. Intravenous FCM (500-1000mg) was administered and the improvement in Hb levels and iron stores was assessed after 3 weeks of total dose infusion.Results: Out of 150, 139 women were included in the study. Most of the women were in the age group of 30-39 years (38.12%). Most of the patients (74.10%) had mild anemia. Mean Hb levels increased over a period of 3 weeks after FCM administration from 8.70±1.04 gm% to 11.07±1.02 gm% which was statistically significant. Other parameters like S.TIBC (Serum total iron binding capacity), S. Ferritin, S. Iron also suggested a significant improvement after FCM administration. No serious life threatening adverse events were observed with FCM.Conclusion: Intravenous FCM is an effective and a safe treatment option for IDA and has an advantage of single administration of high doses without serious adverse effects

Caesarean section under spinal and epidural anesthesia in complete atrioventricular block without a pacemaker: a rare case report

Complete heart block (CHB) during pregnancy is rarely encountered. Management requires a multidisciplinary approach involving the obstetrician, cardiologist, anesthetist, and neonatologist. Treatment varies from medical management to temporary or permanent pacemaker insertion. Complete atrioventricular block comprises complete absence of AV conduction - none of the supraventricular impulses are conducted to the ventricles. Perfusing rhythm is maintained by a junctional or ventricular escape rhythm. Typically, the patient will have severe bradycardia with independent atrial and ventricular rates. The incidence is 1 in 15,000 to 20,000 live births. We successfully managed caesarean section in a pregnancy with complete atrioventricular block under spinal and epidural anesthesia without a pacemaker. Asymptomatic pregnant women with congenital complete atrioventricular block can tolerate caesarean section under spinal and epidural anesthesia without a pacemaker