Effects of Instructional Videos and Real-life Mathematics Activity on Student Achievement and Attitude in a Community College Transitional Mathematics Course

This study investigated the effect of instructional videos and real-life activities on the mathematical achievement and attitude of developmental students. The study also investigated the attitude of developmental students towards learning mathematics through instructional videos and real-life activities. The study was conducted at an urban community college with transitional mathematics classes. The four mathematics classes in the study received various combinations of real-life activities, instructional videos, and traditional teaching while studying basic concepts such as decimal place value, percentages, and fractions. Pre-and post-tests were conducted to measure student achievement. Attitude scales, surveys, and interviews were used to measure attitude changes. Results showed that, overall, the mathematics achievement of the classes receiving consistent exposure to videos and real-life activities was greater than classes receiving only some of the special instructional treatments. Students interviewed believed that instructional videos and real-life activities improved their understanding of the mathematical concepts involved in the study

Single Edge Triggered Static D Flip-Flops: Performance Comparison

Due to fast growth of portable devices, power consumption and timing delays are the two important design parameters in high speed and low power VLSI design arena. In this paper we presents the comparison of single edge triggered static D flip-flop designs to show the benefit of power consumption ,delay and power delay product on the basis of area efficiency. Keywords: Single edge triggered flip-flops, super-threshold region, parasitic capacitance, transmission gat

New improvements in increasing trends of caesarean section: to compare the effectiveness of two techniques Misgav Ladach with Joel Cohen incision versus Munro Kerr with pfannenstiel incision for caesarean section

Background: Caesarean section (C-section) is the most common surgery among women worldwide, and the global rate of this surgical procedure has been continuously rising. Hence, it is significantly crucial to develop and apply highly effective and safe caesarean section techniques. In this study, we aimed at assessing the safety and effectiveness of the Joel-Cohen-based Misgav Ladach technique and comparing the results with the transverse Pfannenstiel incision (Munro Kerr) for C-section.Methods: It was a prospective randomised controlled trial conducted on 100 women undergoing caesarean section at Patna Medical College and hospital in 2017. Patients were randomly allocated in 2 groups  and intra operative  and postoperative findings (blood loss, duration of surgery, post op fever, wound complication, APGAR scores etc. were calculated.Results: The duration of surgery was significantly low in Misgav Ladach technique (19.9 minutes vs. 29.54 minutes p value <0.001) Misgav technique was found economically better method as only 1 suture was used in 43 patients (p value<0.001). Post operative recovery (ambulation and bowel transit time) was found much early in Misgav Ladach vs. Munro Kerr (p value <0.001).Post operative use of analgesics was significantly less in Misgav technique (p value <0.0001). However no significant difference was observed in incidence of postoperative fever, blood loss and mean APGAR scoring of neonates.Conclusions: From this study it can be concluded that Misgav ladach method of caesarean section is associated with better short time post operative outcomes, especially resulting in reduction of pain and postoperative hospital stay

DC electrical Resistance measurement in composite of cuprate Superconductor

Bulk YBCO sample is prepared using solid state reaction route. Transport property of YBCO+ x NiO (x = 0.1, 0.7, 1 wt. %) is studied four probe method. Microstructural analysis is performed using scanning electron microscope and phase confirmation of YBCO powder is done by X-ray diffraction method. Data collected are computer controlled through automated programs. The transition temperature is affected on addition of NiO to YBCO. Both Tc and Tc0 decrease immensely on addition of small quantity of magnetic materia

Effectiveness of child to parent educational package in terms of knowledge among adolescents and practice among their parents regarding household waste disposal methods

Background: The clean environment not only promotes good health but also enhances the quality of life. Waste management is one of the most concerning issues among developing countries like India. Poor waste management is harmful not only for our environment but it also affects human health. For many infectious diseases like diarrhea, dengue, flu, cholera, etc. The main cause is improper waste management. The largest part of municipal waste is household/ domestic waste hence, it is important to manage waste at a primary source that it household waste.Methods: A quasi-experimental design with quantitative approach was undertaken for the study. Total 103 adolescents who was studying in 6-12th standard in Government Inter College Badowala, Doiwala Block (Dehradun) and their parents were selected as study participants by using a systematic random sampling technique. For data collection Demographic tools, structured knowledge questionnaire and self-reported practice checklist were administered. Data was collected from 17 December to 30 December, 2019. Data were analyzed using descriptive statistics.Results: The present study revealed that 90.2% of adolescents had average knowledge but it was surprising to note that very less (32%) parents had good practice regarding household waste management. After providing education to adolescents regarding household waste disposal methods there was a significant increase in mean posttest knowledge score (20.84) than the mean pretest knowledge score (13.55) of adolescents. The mean posttest practice score-II (9.17) was higher than mean post-test practice score -I (7.55) after children were educating their parents. There was a significant association of pretest knowledge with the type of house and number of people live in house of adolescents.Conclusions: The study concluded that child to parent educational package is an effective intervention to improve the knowledge of adolescents and the practice of their parents regarding household waste disposal methods. 

Single-Pot Rapid Synthesis of Colloidal Core/Core-Shell Quantum Dots: A Novel Polymer-Nanocrystal Hybrid Material

Colloidal core and core shell Quantum Dots (QD's) are unique and important optoelectronic materials because properties of these QD's can be tailored by configuring core and optimizing shell thickness. In this research work, lead selenide (PbSe) core and PbSe-CdSe (Core-shell) QD's are synthesized using oleic acid as a capping ligand by colloidal route. This simpler, cost-effective and rapid single pot synthesis route for colloidal core-shell quantum dots unlike conventional double-pot approach like cation-exchange and SILAR process has been reported for the very first time. Phase formation of prepared quantum dots is confirmed by XRD analysis, capping ligand presence by IR spectroscopy and morphological information by Scanning electron microscopy respectively. These synthesized inorganic quantum dots are dispersed in Poly (3-hexyl thiophene) polymer for formation of their respective nanocomposites. From PL quenching studies, it was inferred that PbSe-CdSe core-shell quantum dots showed enhanced rate of PL quenching and hence higher value of Stern-Volmer constant (K-SV) than PbSe Core QD's. This confirms that CdSe shell formation on PbSe core significantly passivates the core-surface, increases the stability and enhances the charge transfer mechanism for its potential application in Hybrid Solar cells

Changing trends in technique of hysterectomy in abnormal uterine bleeding: a comparison between non descent vaginal hysterectomy versus laparoscopic assisted vaginal hysterectomy

 Background: Hysterectomy is the commonest gynaecological surgery over the world. However, in India there is a huge lack in data regarding this surgery. The common indications are abnormal uterine bleeding (AUB), prolapse, pelvic inflammatory disease (PID) and pelvic pain. This study focuses on pros and cons of different routes of hysterectomy to decide a better approach of management. Aims and objective of the study were to compare non descent vaginal hysterectomy (NDVH) to laparoscopic assisted vaginal hysterectomy (LAVH) to determine better route of hysterectomy.Methods: A randomized prospective observational study conducted in Hind Institute of Medical Science, Barabanki over a period of 2 years on perimenopausal women undergoing hysterectomy for AUB for benign pathology. 100 patients were selected for the study and randomly divided in 2 groups NDVH and LAVH. Preoperative investigations, intra-operative and postoperative complications were compared.Results: The mean duration of surgery was found to be significantly less in NDVH group 71.24 minutes as compared to LAVH group 103.1 minutes. (p value <0.001). Number of patients requiring Blood transfusion during or after surgery was higher in LAVH group (21) than in NDVH (15) (p value <0.05) suggesting more blood loss in LAVH. Patients undergoing NDVH were having significant less postoperative pain visual analogue score 3.8 as compared to 5.4 in LAVH group (p value <0.001) .5 patients in LAVH group were having postoperative abdomen discomfort as compared to only 1 in NDVH group (p value <0.05).Conclusions: NDVH supersedes LAVH being faster, less expensive, less blood loss and cosmetically scarless surgery. However, LAVH should be kept in mind if there is associated adnexal pathology

Selective estrogen receptor modulator: efficacy in abnormal uterine bleeding in perimenopausal women

Background: Abnormal uterine bleeding affects 50% women of perimenopausal age group. The use of ormeloxifene (SERMS) in management of AUB is well known. The objective of the present study was aimed to see the effects of ormeloxifene on different types of endometrium.in the medical management of Abnormal Uterine Bleeding (AUB).Methods: It was Prospective, interventional study. A total of 90 women who attended Outpatient Gynaecology Department, Guwahati with complain of AUB in perimenopausal age group (37-48) were prescribed 60mg ormeloxifene twice weekly for 3 months followed by once weekly for next 3 months after preliminary D and C.Results: Ormeloxifene was found to be more effective in reducing PBAC score and ET in patients with proliferative and secretory endometrium The reduction in mean PBAC score with ormeloxifene (175.3 to 20.93)(p value 0.0001) and ET (9.6 to 2.9 mm) (p value 0.0001) in proliferative endometrium, (179.2 to 14.8 (p value 0.0001) ) and ET 11.1 to 1.9 mm (p value 0.0003)in secretory endometrium was observed after 6 months. However, it was found not to be effective in reducing PBAC score and ET in patients with atrophic endometrium. Change in PBAC SCORE from 176.4 to 150.8 (p value 0.08) and in ET from 2.8 to 2.1mm( p value 0.3) was observed. No major side effects were reported.Conclusions: Ormeloxifene is effective in AUB with proliferative and secretory endometrium

Stable isotope systematics of surface water bodies in the Himalayan and Trans-Himalayan (Kashmir) region

Stable hydrogen (δD) and oxygen (δ 18O) isotope ratios of the headwaters of the Indus and its tributaries, surface ice in glaciers, saline and fresh water lakes and thermal springs in the Himalayan and Trans-Himalayan (Kashmir) region are reported. The δD−δ18 relationship for the river samples shows a slope of 9.12±0.29 which agrees well with the estimate of 8.99±0.33 based on a simple Rayleigh fractionation model. The unique signature of a higher deuterium excess (d) of the 'Western Disturbance' is preserved in these samples. An altitude effect of −0.9 per mil/km is observed in the δ18O of Indus waters. At a lower altitude (Beas) the altitude effect is almost double, indicating that the altitude effect decreases with elevation in this region