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The energy sector is an intrinsically dynamic and complex system, and therefore its behaviour is not solely controlled by constituent components. Rather, it is a consequence of dynamic interactions among them. To properly manage such a system in a sustainable manner, it is necessary to understand the underlying dynamics of component interactions. Despite this, the interconnections between components of the energy sector in research and policy have received little attention. Here, we outline crucial limitations of previous efforts and emphasize the importance of using systems thinking in addressing the energy sector's sustainability challenges. We demonstrate this by a case study of the Australian energy sector, which has experienced emerging sustainability issues. Research findings show that current policies promoting energy development in the country are likely to be ‘fixes that fail’ that ultimately undermine sustainability. To achieve in building a sustainable energy sector, the policy must focus on implementing long-term solutions and avoid short-term quick fixes.

Objective: The aim of this study was to review different management modalities and outcome of patients presenting with late intestinal obstruction (IO) after radical cystectomy (RC) or palliative cystectomy (PC)., Materials and Methods: Files of patients who presented with IO between January 1978 and June 2014 were reviewed. Patients who developed IO following either RC or PC more than 30 days after surgery were included. Patients' characteristics and management protocols were evaluated. Predictors for failure of conservative management and unfavorable outcome after surgical explorations were evaluated. Symptom-free and overall survival rates of patients with malignant IO was were recorded., Results: The prevalence of IO was 2.8% after RC (118 out of 4199 patients) and 10% after PC (nine out of 87). Colonic diversions had the highest prevalence (6.2%), followed by ileal loop conduit (2.9%); the lowest prevalences followed Kock pouch and ileal W neobladder (1.7% and 1.6%, respectively). Postoperative urinary leakage from a ureteroenteric anastomosis was the only predictor for surgical intervention (p = 0.039). Nine cases had been explored for malignant obstruction (eight after RC and one after PC). The mean ± SD elapsed time before death was 3.6 ± 2 months (range 0.5-17 months)., Conclusions: Urinary diversion with colonic segments carries more risk for the development of IO in comparison with ileal segments. Postoperative urinary leakage after cystectomy and urinary diversion may be a contributory factor for surgical exploration in cases with late IO.