In shared spaces, motorized and non-motorized road users share the same space with equal priority. Their movements are not regulated by traffic rules, hence they interact more frequently to negotiate priority over the shared space. To estimate the safeness and efficiency of shared spaces, reproducing the traffic behavior in such traffic places is important. In this paper, we consider and combine different levels of interaction between pedestrians and cars in shared space environments. Our proposed model consists of three layers: a layer to plan trajectories of road users; a force-based modeling layer to reproduce free flow movement and simple interactions; and a game-theoretic decision layer to handle complex situations where road users need to make a decision over different alternatives. We validate our model by simulating scenarios involving various interactions between pedestrians and cars and also car-to-car interaction. The results indicate that simulated behaviors match observed behaviors well.This research has been supported by the German Research Foundation (DFG) through the Research Training Group SocialCars: Cooperative (De-) centralized Traffic Management (GRK 1931). We cordially thank Federico Pascucci and Bernhard Friedrich for providing road user datasets.

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Arboviral diseases including dengue and chikungunya are a major public health concern in Bangladesh, with unprecedented levels of transmission reported in recent years. The primary approach to control these diseases is control of Aedes aegypti using pyrethroid insecticides. Although chemical control is long-practiced, no comprehensive analysis of Ae. aegypti susceptibility to insecticides has previously been conducted. This study aimed to determine the insecticide resistance status of Ae. aegypti in Bangladesh and investigate the role of detoxification enzymes and altered target site sensitivity as resistance mechanisms. Aedes eggs were collected using ovitraps from five districts across the country and in eight neighborhoods of the capital city Dhaka from August to November 2017. CDC bottle bioassays were conducted for permethrin, deltamethrin, malathion, and bendiocarb using 3-5-day old F0-F2 non-blood fed female mosquitoes. Biochemical assays were conducted to detect metabolic resistance mechanisms and real-time PCR was performed to determine the frequencies of the knockdown resistance (kdr) mutations Gly1016, Cys1534, and Leu410. High levels of resistance to permethrin were detected in all Ae. aegypti populations, with mortality ranging from 0 – 14.8% at the diagnostic dose. Substantial resistance continued to be detected against higher (2X) doses of permethrin (5.1 – 44.4% mortality). Susceptibility to deltamethrin and malathion varied between populations while complete susceptibility to bendiocarb was observed in all populations. Significantly higher levels of esterase and oxidase activity were detected in most of the test populations as compared to the susceptible reference Rockefeller strain. A significant association was detected between permethrin resistance and the presence of Gly1016 and Cys1534 homozygotes. The frequency of kdr alleles varied across the Dhaka populations, and Leu410 was not detected in any of the tested populations. The detection of widespread pyrethroid resistance and multiple mechanisms highlights the urgency for implementing alternate Ae. aegypti control strategies. In addition, implementing routine monitoring of insecticide resistance in Ae. aegypti in Bangladesh will lead to a greater understanding of susceptibility trends over space and time, thereby enabling the development of improved control strategies.Author summaryGlobally, arboviral diseases including dengue, chikungunya, and Zika are major public health problems. Bangladesh recently experienced its two worst outbreaks of chikungunya and dengue, involving hundreds of thousands of people. The principal vector of these diseases, the Aedes aegypti mosquito, is present throughout Bangladesh, especially in the major cities including the capital, Dhaka. The control of Ae. aegypti in Bangladesh has long been based on space sprays by thermal fogging of pyrethroid insecticides. However, no comprehensive assessment has previously been conducted to understand the insecticide resistance status of Ae. aegypti. We tested Ae. aegypti collected from places of historical arboviral outbreaks to determine their insecticide resistance status, as well as some of the underlying mechanisms causing the resistance. All of the populations tested were highly resistant to permethrin, the key insecticide used by vector control programs in Dhaka, with varying degrees of resistance to deltamethrin and malathion, and full susceptibility to bendiocarb. High levels of esterase and oxidase enzyme activity and the presence of mutations on the voltage-gated sodium channel gene were detected as key mechanisms underpinning the resistance. The findings of this study provide the first comprehensive evidence base for improving Ae. aegypti control strategies in Bangladesh.

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Malaria elimination is a Millennium Development Goal. Artemisinins, fast-acting antimalarial drugs, have played a key role in malaria elimination.

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Background: The accessory pancreatic duct enters the duodenum at the minor duodenal papilla, developmentally draining the dorsal pancreatic bud; however, it is smaller and less constant than the main pancreatic duct and undergoes varying degrees of atrophy at the duodenal end. Objective: The objective of this study was to see the variations in course, opening and communication pattern of the accessory pancreatic duct in different age-groups in a Bangladeshi population. Methods: This crosssectional, descriptive study was done was done in the Department of Anatomy, Dhaka Medical College, Dhaka, from August 2005 to December 2006, based on collection and dissection of 75 postmortem male human pancreas. The collected samples were divided into seven age groups: 10-19 years, 20-29 years,30-39 years, 40-49 years, 50-59 years),60-69 years and(eˆ70 years. However, 65 samples were taken for final observation. Results: The accessory pancreatic duct was found in 27.69% specimens. Straight course was found in 50% specimen, while spindle course in 27.78% and cudgel course in 22.22% specimens were observed. In only 4 (6.15%) specimens, the accessory pancreatic duct communicates with the common bile duct, while in 11 (16.93%) specimens, the accessory pancreatic duct communicates with the main pancreatic duct. 12 (66.67%) accessory pancreatic ducts opened into the minor duodenal papilla, while 5 (27.78%) into the major duodenal papilla and 1 (5.55%) into the 3 rd duodenal papilla. Conclusion: Several variations were observed in accessory pancreatic duct pattern in terms of their course, opening and communications. However, no significant differences were evident in any parameter among the age groups. Here, females were excluded due to less availability of the female cadaveric pancreas during study period.

The medical practice has become complex and challenging because of the entry of newer medicines and technologies. The key objective of pharmacology teaching-learning activities is to make graduates enable to select medicines by appraising safety, efficacy, cost and suitability. Promotional activities conducted by pharmaceutical industries deleteriously affect physicians’ prescribing practice. The present research was conducted with an attempt to explore current academic documents related to Pharmacology education in Bangladesh. The curriculum (pharmacology portion of undergraduate medical curriculum), books of pharmacology (preferred by the pharmacologists), and written question papers (of last five years from all universities) were evaluated by searching certain key phrases. The curriculum of undergraduate course did not give adequate emphasis on issues related to the pharmaceutical promotion. Ethical issues and ‘critical appraisal skill’ are not mentioned in the pharmacology books, and not appear in the written examinations.