Case report on the recurrence of tuberculosis of hip after 40 years

Tuberculosis of joints is relatively rare condition and is associated with varied degree of immobility as well as other limitations. Tuberculosis of hip joint results in a remarkable decline in the living standard of the patients since hip joint has a wide range of function in daily movements apart from being the pivotal weight bearing joint in human body. The degeneration of hip joint culminates into long term morbidity for the patient. In this case report we present a patient who had suffered from the tuberculosis of hip joint 40 years before and had received the standard anti-tuberculosis chemotherapeutic regimen with isoniazid, rifampicin, pyrazinamide and ethambutol. After treatment, the patient had some degree of relief from the pain however the movement of the hip joint was restricted; the restriction increasing progressively since. On diagnostic testing he was found to have a recurrence of tuberculosis along with the old scar tissue left by the primary condition. The patient was assessed thoroughly after which total hip replacement surgery was performed along with the adhesiolysis. The patient made a remarkable recovery after the surgery with a considerable increased range of movement in his hip joint

Price Behavior of the Taiwan Depositary Receipt

This is a case study to discuss the Taiwan Depositary Receipt’s (TDR) market performance. Attention is focused on the event study, market risk analysis and the trading strategy for TDRs. Tests of abnormal returns for underlying stocks during the event period were conducted. Regression analysis via the market model, comparing the risk level between the TDR and the underlying stocks was investigated. Furthermore, causality tests are applied to explore the relationships between the price of underlying stocks and the corresponding TDR. Finally, utilizing the cointegration structure, suitable strategies for trading TDRs are proposed. The empirical results indicate that the underlying stocks have declaration effects, at the TDR’s initial announcement date. TDR’s issued after 2009 have higher risks and higher returns. The out-sampled empirical results show that there are no immediate arbitrage opportunities, however, the proposed waiting trading strategy could increase profits.Key words: Cointegration; Event study; Market risk; Taiwan depositary receipts; Trading strateg

AoI-Delay Tradeoff in Mobile Edge Caching: A Mixed-Order Drift-Plus-Penalty Algorithm

We consider a scheduling problem in a Mobile Edge Caching (MEC) network, where a base station (BS) uploads messages from multiple source nodes (SNs) and transmits them to mobile users (MUs) via downlinks, aiming to jointly optimize the average service Age of Information (AoI) and service delay over MUs. This problem is formulated as a difficult sequential decision making problem with discrete-valued and linearly-constrained design variables. To solve this problem, we first approximate its achievable region by characterizing its superset and subset. The superset is derived based on the rate stability theorem, while the subset is obtained using a novel stochastic policy. We also validate that this subset is substantially identical to the achievable region when the number of schedule resources is large. Additionally, we propose a sufficient condition to check the existence of the solution to the problem. Then, we propose the mixed-order drift-plus-penalty algorithm that uses a dynamic programming (DP) method to optimize the summation over a linear and quadratic Lyapunov drift and a penalty term, to handle the product term over different queue backlogs in the objective function. Finally, by associating the proposed algorithm with the stochastic policy, we demonstrate that it achieves an $O(1/V)$ versus $O(V)$ tradeoff for the average AoI and average delay