Stability Control Method of Hybrid Impulsive System Based on M-Matrix

Aiming at the problems of poor control effect and poor stability of the mixed pulse system with the traditional method, this paper introduces the M-matrix to establish the pulse delay differential indefinite formula and realize stability control of the mixed pulse system. The synchronization problem of mixed-pulse systems in complex networks is analyzed using M matrix. The local coupling strength of the impulsive system is controlled according to the adaptive method. A class of Multi-Lyapunov functions is constructed for stability control of hybrid impulsive systems. The proposed method is proved to have better control effect through experiments.

SWIR Photosensory

In this paper, we report on the design, the fabrication, and performance of SWIR photomodules using sensitive two-dimensional arrays based on InGaAs-heterostructures. The de- sign of suggested InGaAs-heterostructure includes InAlAs wideband barrier layer and high sensitive absorber InGaAs layer which are increasing the uniformity and operability of focal plane array (FPA), so the number of defect elements are less than 0.5 %. The possibilities of spectral range expanding into short-wavelength to 0.5 μm and into long-wavelength to 2.2 μm regions have been considered. The operation principals of active-pulse system for 0.9–1.7 μm spectral range based on InGaAs 320256 FPA with 30 μm pitch have been presented. The investigations showed that the infrared gated-viewing system based on the InGaAs 320256 FPA provided a spatial resolution of 0,6 m.

What Are The Factors That Affect Post COVID 1st Month's Continuing Symptoms?

ABSTRACT Aim: The aim of our research was to investigate retrospectively the relationship between the symptoms and general characteristics, initial laboratory values and treatments in patients who had COVID- 19 and who applied to the chest diseases outpatient clinic for control after 1 month. Methods: Three hundred fifteen patients who were diagnosed with COVID- 19 and applied to the chest diseases outpatient clinic between May 2020 and August 2020 for control in the 1st month were included in the study. Patient information was collected from the hospital information system and the e-pulse system. Results: Females accounted for 50.2 % of the our patients and their mean age was 47.98 ± 14.81 (19-88) years. 14.3% (n: 45) of the individuals were 65 years of age and older. 20.6% (n: 65) of our patients were smoking. 70.2% (n: 221) of our patients were treated at home. 133 patients had at least one comorbid disease. The patients most frequently reported cough, dyspnea, weakness, myalgia and diarrhea. The most common symptoms were cough, dyspnea, weakness and myalgia in the first month. It was determined that the symptoms had persisted in patients who had been hospitalized, had dual therapy, had comorbid diseases and had more common pathologies in their pulmonary imagings. Conclusion: Symptoms may persist for a long time in hospitalized patients, in patients with COVID-19-related pneumonia and concomitant chronic diseases and in patients with high d-dimer and high CRP at the time of admission. Patients are informed that their symptoms may last for a long time, unnecessary hospital admissons can be avoided.

Comparison of short-pulse subthreshold (532 nm) and infrared micropulse (810 nm) macular laser for diabetic macular edema

The purpose of the study was to assess both anatomic and functional outcomes between short-pulse continuous wavelength and infrared micropulse lasers in the treatment of DME. This was a prospective interventional study from tertiary care eye hospital—King Khaled Eye Specialist Hospital (Riyadh, Saudi Arabia). Patients with center-involving diabetic macular edema were treated with subthreshold laser therapy. Patients in the micropulse group were treated with the 810-nm diode micropulse scanning laser TxCell (IRIDEX Corporation, Mountain View, CA, USA) (subthreshold micropulse—STMP group). Laser was applied according to recommendations for MicroPulse (125 microns spot size, 300 ms pulse duration and power adjustment following barely visible testing burn) in a confluent mode (low intensity/high density) to the entire area of the macular edema. Patients in the short-pulse group were treated with grid pattern laser with 20 ms pulse PASCAL laser 532 nm (TopCon Medical Laser Systems, Tokyo, Japan) with EndPoint algorithm, which was either 30% or 50% of testing burn (EndPoint 30% and EndPoint 50% groups, respectively). Main outcome measures included best-corrected visual acuity (BCVA in logMAR) and foveal thickness at baseline and the last follow-up visit at 6 months. There were 44 eyes in the micropulse group, 54 eyes in the EndPoint 50% group and 18 eyes in the EndPoint 30% group. BCVA for the whole cohort (logMAR) was 0.451 (Snellen equivalent 20/56) at baseline, 0.495 (Snellen equivalent 20/62) (p = 0.053) at 3 months, and 0.494 (Snellen equivalent 20/62) at the last follow-up (p = 0.052). Foveal thickness for the whole cohort was 378.2 ± 51.7 microns at baseline, 347.2 ± 61.3 microns (p = 0.002) at 3 months, and 346.0 ± 24.6 microns at the final follow-up (p = 0.027). As such the short-pulse system yields more temporary reduction in edema. Comparison of BCVA between baseline and 6 months for EndPoint 30%, EndPoint 50% and STMP groups was p = 0.88, p = 0.76 and p = 0.003, respectively. Comparison of foveal thickness between baseline and 6 months for EndPoint 30%, EndPoint 50% and STMP groups was p = 0.38, p = 0.22 and p = 0.14, respectively. We conclude that the infrared micropulse system seems to improve functional outcomes. When applied according to previously published reports, short-pulse system may yield more temporary reduction in edema while infrared micropulse system may yield slightly better functional outcomes.

Resilience for whom? Governing social-ecological transformation in Cambodia’s Tonle Sap Lake

<p>Growing water scarcity around the world is a crucial issue driven by global environmental change, as well as increasing competition for water resources for different economic and social pursuits. Climate change will have far-reaching consequences for water resources, particularly through increasing frequency and intensity of extreme weather events, such as droughts and floods. Such changes will acutely impact water and food security in developing countries, where large proportions of society depend on natural resources for their livelihoods. This can significantly undermine the resilience of such complex social-ecological systems, and the fulfilment of SDGs, including water-related SDG 6.</p><p>The capacity of freshwater systems to cope with stresses and shocks can be weakened when irreversible changes occur and thresholds are exceeded. It is therefore important for water governance arrangements to incorporate characteristics such as non-linear dynamics and unpredictability. Resilience is also gaining traction as a holistic framework to examine social-ecological system components, processes and feedback loops under change across scales. However, resilience has been critiqued for its inability to appropriately reflect socio-political dynamics, including power asymmetries, cultural values, and human well-being.</p><p>In this presentation, a novel theoretical framework for studying and describing resilience is presented for the analysis of freshwater system governance, using three dimensions of resilience across multiple scales of society: absorptive, adaptive, and transformative capacity. The audience is encouraged to engage critically with the concept, asking the question “resilience of what, to what, and for whom?”. In doing so, we will also address the typically narrow technical focus on resilience, and its potential challenges in achieving societal resilience to climate extremes.</p><p>The framework is applied to Cambodia’s Tonle Sap and its hydrologically and culturally unique flood pulse system. The lake provides food security for millions, yet is undergoing negative ecological and social transformation due to pressures along the Mekong River including climate change, hydropower development, and weak governance. The changing dynamics in its flood pulse system and an increasingly complex socio-political landscape are presented through the framework, addressing both positive and negative components of resilience. In this way, the framework helps to put the current research and actions on the lake’s management into the broader context of resilience and change.</p><p>We will demonstrate absorptive and adaptive responses of people living on and around the lake, including urban migration and illegal fishing practices. The risk of so-called rigidity traps (inflexible system components) is also explored, including an increasingly resilient autocratic government regime – and the potential of such rigidity traps to undermine the resilience of the overall system. An enduring status quo of narratives around agriculture and hydropower development is shown as a key aspect of resilience of the Tonle Sap. Finally, we will present the key windows of opportunity for transformation, focusing on the role of local, largely informal institutions in facilitating sustainable and equitable governance outcomes.</p><p>The key aims of this presentation are to present a novel framing of resilience that incorporates societal dimensions more fully, and to identify pathways for transformative change that benefit all relevant groups of society.</p><p> </p>