LT-ViT: A Vision Transformer for multi-label Chest X-ray classification

Vision Transformers (ViTs) are widely adopted in medical imaging tasks, and some existing efforts have been directed towards vision-language training for Chest X-rays (CXRs). However, we envision that there still exists a potential for improvement in vision-only training for CXRs using ViTs, by aggregating information from multiple scales, which has been proven beneficial for non-transformer networks. Hence, we have developed LT-ViT, a transformer that utilizes combined attention between image tokens and randomly initialized auxiliary tokens that represent labels. Our experiments demonstrate that LT-ViT (1) surpasses the state-of-the-art performance using pure ViTs on two publicly available CXR datasets, (2) is generalizable to other pre-training methods and therefore is agnostic to model initialization, and (3) enables model interpretability without grad-cam and its variants.Comment: 5 pages, 2 figure

Assessing Research Engagement of Resident Doctors in Training in Northwestern Nigeria

Background: Residency training develops trainees to practice evidence-based medicine using knowledge acquired through researches. Resident doctors are not just expected to be consumers of good researches but are also expected to build their competencies in conducting researches in their fields of specialization. They are expected to engage in journal clubs as well as scientific paper presentations in local and international conferences under the mentorship and guidance of their trainers. In addition, trainers in residency training supervise the compulsory dissertation of senior residents under them. Objectives: We aimed to assess research engagement of resident doctors in training and pattern of submission and approval of their dissertation proposal. Methodology: It was a descriptive cross-sectional descriptive study involving resident doctors in accredited hospitals in Northwestern Nigeria. Electronic questionnaires were distributed to respondents via their verified electronic media contacts. Data were collected within a period of 1 month from July 10 to August 6, 2020. Data were analyzed using mean, standard deviation, simple tables as well as Z‐test and Chi‐square test. The level of significance was set at 0.05 for decision purposes. Results: A total of 120 questionnaires were completed. The mean age of respondents was 38.0 ± 3.8 years, with majority being males 88 (83.3%), and 107 (89.2%) being married. Only 12 (10%) and 44 (36.7%) respondents had published manuscript before and since commencement of residency training, respectively. There was a significant difference between manuscript publication before and since commencement of residency training (P = 0.012). Only 32% of the respondents who submitted their dissertation proposal to the colleges did so within 12 months of success in their Part 1 fellowship examination. There was no association between the publication of manuscript during residency training and submission of dissertation to either National Postgraduate Medical College of Nigeria (P = 0.190), West African College of Surgeons (P = 0.686), or West African College of Physicians (P = 0.317). Conclusion: Research engagement by resident doctors from this study was not satisfactory. Publication of manuscript by resident doctors was associated with prior publication before commencement of residency training and type of training hospital

Assessing Performance of Resident Doctors in Training in Northwestern Nigeria

Background: Residency training is a postgraduate medical education where graduate doctors are mentored toward becoming   independent specialists. In Nigeria currently, the Medical Residency Training Act (MRTA) 2017 guides residency training under the regulation of three postgraduate medical colleges: the National Postgraduate Medical College of Nigeria (NPMCN), West African College of Surgeons (WACS), and West African College of Physicians (WACP). For the respective colleges, resident doctors are expected to attempt Part One and Part Two fellowship examinations after completing their junior and senior residency training, respectively, within stipulated durations. Objectives: The aim of this study is to assess resident doctors’ performance in training and predictive factors. Methodology: Electronic  questionnaires was distributed to respondents through their contacts or emails. Data was collected within a period of one month, from July 10 to August 6, 2020. Data was analyzed using mean, standard deviation, simple tables as well as t‑test and Chi‑square test. The level of significance was set at 0.05 for decision purposes. Results: A total of 120 participants were involved in the study. The mean age of respondents was 38.0 ± 3.8 years, with a majority of 88 (83.3%) males and 107 (89.2%) married. On the first attempt, 48 (65.8%), 37 (60.6%), and 15 (57.7%) respondents were successful in NPMCN, WACS, and WACP Part One fellowship  examinations, respectively. There was no significant difference in the success in Part One between the three postgraduate medical  colleges. There was significant difference in the duration between the first attempt and success in Part One examinations for the three colleges, respectively (NPMCN – P = 0.001, WACS – P < 0.001, WACP – P = 0.036). Conclusion: There was a comparable success in Part One fellowship examination between the three postgraduate medical colleges, with over half of respondents recording success in their first attempt. However, there were significant delays between the first attempt and  success in Part One examination for the three postgraduate medical colleges. Keywords: Part One examination, performance, residency trainin

Measuring Residents Satisfaction Levels of Public Housing in Maiduguri Metropolis of Borno State, Nigeria

This study aims to evaluate the residents’ satisfaction with public housing in the Maiduguri metropolis. The study assessed the levels of quality of housing components, occupants' preference and satisfaction. The study adopted a quantitative approach and data were collected through a questionnaire survey from 265 household heads of the housing estate proportionately selected from the target population in Maiduguri metropolis. The data collected were subjected to descriptive and inferential statistics with mean ranking, frequency distribution and multiple regression analysis to achieve the research aim. The study showed that quality of building component, Condition of a bedroom, condition of living room, condition of the roof, condition of finishing and condition of the kitchen were ranked as very good and condition of the store, condition of the dining area, condition of garage and condition of toilets were good in the study area, while public housing quality and preference significantly influence occupants' satisfaction in Maiduguri metropolis. The research recommended that occupant peculiarities should be integrated into the design and development of housing estate. This will ensure that the satisfaction of the occupants is well co-opted in the development and therefore lead to higher satisfaction and functionality of the estates. The provision of facilities and amenities in public housing estates should be based on the occupant requirements and peculiarities. This will lead to the optimal utilization of the estate after development

Future Time Perspective and Frustration Intolerance in Medical students

Background: The future perception of students is affected by a series of events happening throughout their course of studies. The objective of this study is to measure the Future time perspective (FTP) and Future intolerance (FI) among medical students during the COVID-19 lockdown.Materials and Methods: It was a descriptive cross-sectional study done from January 15, 2020 to July 20, 2020 among MBBS students of Rawalpindi Medical University. The questionnaire consisted of 1) Socio-demographic details, 2) Future Time Perspective scale, and 3) Frustration Discomfort scale. An online survey was done using Google Forms. An ANOVA was run to check for differences in FTP and FI between the classes. Bivariate analysis for continuous variables was applied. The data were analysed using the Statistical Package for Social Sciences (SPSS) v.23.0 (IBM, Armonk, US). Results: Mean age of participants was 21.8 (SD=1.66) with majority females 331(58.4%). The mean FTP score and mean FI scores were 50.8(SD=19.43) and 91.46(SD=17.65) respectively. Final-year students had the highest mean score (Mean=57.94(SD=7.72)) for FI. On the other hand, mean scores for FDS were highest in first-year students (Mean=102.89 (SD=13.52)) while lowest in fourth-year students (Mean=81.73(SD=17.49)) with P=.005. There was a significant difference in the dimensions of Emotional Intolerance and achievement among females and males. Bivariate analysis showed a significant negative correlation was found between FTP and the dimension of discomfort intolerance (r = -0.158, p < 0.001), while a significant positive correlation was found between FTP and the dimension of achievement (r = 0.225, p < 0.001). Conclusion: Our study concludes that final-year students have a much higher tolerance level for adversities. Furthermore, they also have a much more positive perspective and a clearer vision regarding their future

Pharmacological Activities of Banana

Plants have been in use in traditional medicine since antiquity, and many active metabolic products with biological significance are obtained from them. Recently, pharmaceutical industries have developed great interest in utilizing these products as an alternative to the chemically synthesized drugs. This is due to the discovery of important new medicines from the plants, because of studies on how people of different background use plants as cure and treatment for many diseases, and side effects of the synthesized drugs. Banana, an eatable fruit produced by some herbaceous flowering plants of the genus Musa, is one of the valuable fruits with proven pharmacological potentials. Bananas are spread almost all over the world. Different chemical constituents like apigenin glycosides, myricetin-3-O-rutinoside, kaempferol-3-O-rutinoside, dopamine, and serotonin have been reported in different parts and varieties of banana. The presence of carbohydrate, proteins as well as flavonoids, makes bananas useful in both nutrition and therapeutics. Pharmacologically, bananas have been shown to possess antiulcer, antimicrobial, and antioxidant activities. This chapter discusses the essential information on banana, including its varieties, distribution, pharmacological actions, and its relevance in pharmaceutical industries. This will be beneficial for researchers to further harness the robustness of this fruit in controlling many diseases and modification of drugs

SWOT analysis of land area-based and value-based property rating

The property rating can be on Value-based rating Assessment (VbRA) or Area-based Rating Assessment (AbRA). This study examined the suitable assessment of Bauchi metropolis, Nigeria. The materials used were published books and journal articles, and SWOT technique was applied to analyse the identified variables, then the strengths, weaknesses, opportunities and threats were sorted out. The facts from the SWOT matrix were assimilated into existing local scenario to strategically decide the appropriate assessment procedure for raising the local revenue for financing the provision and maintenance of municipal infrastructure and facilities. The study found Area-based Rating Assessment (AbRA) as the most appropriate rating assessment procedure for the study area

Premium arrangement in the contemporary real estate transaction in Bauchi

The premium arrangement in the real estate enables lessors to receive a lump sum of money and forfeit a part of rental income, while the lessee enjoys some profit rents. This transaction was not operational in the study area. This study investigated the position of the lessor on the awareness and practice of premium arrangement on the real estate transaction in Bauchi metropolis, using multiple regression and structural equation modelling with AMOS graphics. The analyses (both) multiple regression and structural equation modelling with AMOS revealed that the awareness and practice of premium arrangement in Bauchi metropolis have been a factor that can significantly influence the real estate transactions with corresponding benefits to both lessors and lessees in the study area. It was therefore recommended that the parties’ privy in the premium transaction to acknowledge the benefits to the lessor appeared to out-weigh the benefits to the lessee, thus the parties should be enjoined to comply with the existing rules and covenants of their leas

Savior: A Reliable Fault Resilient Router Architecture for Network-on-Chip

[EN] The router plays an important role in communication among different processing cores in on-chip networks. Technology scaling on one hand has enabled the designers to integrate multiple processing components on a single chip; on the other hand, it becomes the reason for faults. A generic router consists of the buffers and pipeline stages. A single fault may result in an undesirable situation of degraded performance or a whole chip may stop working. Therefore, it is necessary to provide permanent fault tolerance to all the components of the router. In this paper, we propose a mechanism that can tolerate permanent faults that occur in the router. We exploit the fault-tolerant techniques of resource sharing and paring between components for the input port unit and routing computation (RC) unit, the resource borrowing for virtual channel allocator (VA) and multiple paths for switch allocator (SA) and crossbar (XB). The experimental results and analysis show that the proposed mechanism enhances the reliability of the router architecture towards permanent faults at the cost of 29% area overhead. The proposed router architecture achieves the highest Silicon Protection Factor (SPF) metric, which is 24.4 as compared to the state-of-the-art fault-tolerant architectures. It incurs an increase in latency for SPLASH2 and PARSEC benchmark traffics, which is minimal as compared to the baseline router.This work was supported by the Spanish 'Ministerio de Ciencia Innovacion y Universidades' and FEDER program in the framework of the 'Proyectos de I+D d Generacion de Conocimiento del Programa Estatal de Generacion de Conocimiento y Fortalecimiento Cientifico y Tecnologico del Sistema de I+D+i, Subprograma Estatal de Generacion de Conocimiento' (ref: PGC2018-095747-B-I00).Hussain, A.; Irfan, M.; Baloch, NK.; Draz, U.; Ali, T.; Glowacz, A.; Dunai, L.... (2020). Savior: A Reliable Fault Resilient Router Architecture for Network-on-Chip. Electronics. 9(11):1-18. https://doi.org/10.3390/electronics9111783S118911Borkar, S. (1999). Design challenges of technology scaling. IEEE Micro, 19(4), 23-29. doi:10.1109/40.782564Latif, K., Rahmani, A.-M., Nigussie, E., Seceleanu, T., Radetzki, M., & Tenhunen, H. (2013). Partial Virtual Channel Sharing: A Generic Methodology to Enhance Resource Management and Fault Tolerance in Networks-on-Chip. Journal of Electronic Testing, 29(3), 431-452. doi:10.1007/s10836-013-5389-5Borkar, S. (2005). Designing Reliable Systems from Unreliable Components: The Challenges of Transistor Variability and Degradation. IEEE Micro, 25(6), 10-16. doi:10.1109/mm.2005.110Ali, T., Noureen, J., Draz, U., Shaf, A., Yasin, S., & Ayaz, M. (2018). Participants Ranking Algorithm for Crowdsensing in Mobile Communication. ICST Transactions on Scalable Information Systems, 5(16), 154476. doi:10.4108/eai.13-4-2018.154476Ali, T., Draz, U., Yasin, S., Noureen, J., shaf, A., & Zardari, M. (2018). An Efficient Participant’s Selection Algorithm for Crowdsensing. International Journal of Advanced Computer Science and Applications, 9(1). doi:10.14569/ijacsa.2018.090154Poluri, P., & Louri, A. (2016). Shield: A Reliable Network-on-Chip Router Architecture for Chip Multiprocessors. IEEE Transactions on Parallel and Distributed Systems, 27(10), 3058-3070. doi:10.1109/tpds.2016.2521641Valinataj, M., & Shahiri, M. (2016). A low-cost, fault-tolerant and high-performance router architecture for on-chip networks. Microprocessors and Microsystems, 45, 151-163. doi:10.1016/j.micpro.2016.04.009Kim, J., Nicopoulos, C., Park, D., Narayanan, V., Yousif, M. S., & Das, C. R. (2006). A Gracefully Degrading and Energy-Efficient Modular Router Architecture for On-Chip Networks. ACM SIGARCH Computer Architecture News, 34(2), 4-15. doi:10.1145/1150019.1136487Polian, I., & Hayes, J. P. (2011). Selective Hardening: Toward Cost-Effective Error Tolerance. IEEE Design & Test of Computers, 28(3), 54-63. doi:10.1109/mdt.2010.120Mohammed, H., Flayyih, W., & Rokhani, F. (2019). Tolerating Permanent Faults in the Input Port of the Network on Chip Router. Journal of Low Power Electronics and Applications, 9(1), 11. doi:10.3390/jlpea9010011Wang, L., Ma, S., Li, C., Chen, W., & Wang, Z. (2017). A high performance reliable NoC router. Integration, 58, 583-592. doi:10.1016/j.vlsi.2016.10.016Shafique, M. A., Baloch, N. K., Baig, M. I., Hussain, F., Zikria, Y. B., & Kim, S. W. (2020). NoCGuard: A Reliable Network-on-Chip Router Architecture. Electronics, 9(2), 342. doi:10.3390/electronics9020342Poluri, P., & Louri, A. (2015). A Soft Error Tolerant Network-on-Chip Router Pipeline for Multi-Core Systems. IEEE Computer Architecture Letters, 14(2), 107-110. doi:10.1109/lca.2014.2360686Feng, C., Lu, Z., Jantsch, A., Zhang, M., & Xing, Z. (2013). Addressing Transient and Permanent Faults in NoC With Efficient Fault-Tolerant Deflection Router. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 21(6), 1053-1066. doi:10.1109/tvlsi.2012.2204909Liu, J., Harkin, J., Li, Y., & Maguire, L. P. (2016). Fault-Tolerant Networks-on-Chip Routing With Coarse and Fine-Grained Look-Ahead. IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, 35(2), 260-273. doi:10.1109/tcad.2015.2459050Runge, A. (2015). FaFNoC: A Fault-tolerant and Bufferless Network-on-chip. Procedia Computer Science, 56, 397-402. doi:10.1016/j.procs.2015.07.226Binkert, N., Beckmann, B., Black, G., Reinhardt, S. K., Saidi, A., Basu, A., … Wood, D. A. (2011). The gem5 simulator. ACM SIGARCH Computer Architecture News, 39(2), 1-7. doi:10.1145/2024716.202471