Application of Etiology List in Differential Diagnosis of Acute Abdominal Pain^#

Objective: To use the etiology list of abdominal pain to help identify acute abdominal pain. Methods: to design a list of causes of acute abdominal pain as per the concept of system thinking, determine the five differential diagnosis directions of “local organ disease, adjacent organ disease, systemic disease, psychogenic disease, and female reproductive system disease”, and elaborate the application effect of the checklist in the diagnosis of acute abdominal pain by virtue of the analysis of one case of acute abdominal pain. Results: according to the list of causes of abdominal pain, the causes of acute abdominal pain were screened, and patients suffering from acute renal infarction (ARI) who presented with simple abdominal pain were diagnosed and treated timely. Conclusion: the etiology list is helpful to guide the diagnosis direction of acute abdominal pain, and make a rapid clinical diagnosis, so as to form a systematic thinking mode.

Can Be Done Better for the Diagnosis of Non-Differentiated Diseases in Community Hospital?

General Practice is a comprehensive subject with a wide spectrum of diseases. It is challenging to make a more correct diagnosis timely and reasonable treatment with the least instrument examination for the diagnosis of medically unexplained physical symptoms (MUPS). This article reviews the case report of a patient who presented to a community hospital with a one-month history of constant diffuse abdominal pain and underwent eight weeks of examinations, finally experienced deterioration of their condition. Based on this case, this article discusses the problems in the diagnosis of abdominal pain in a community hospital, and according to the clinical thinking mode and checklist of abdominal pain, the diagnostic process of abdominal pain can be improved, and the diagnosis of non-differentiated diseases can be done better, the harm caused by delayed diagnosis may be reduced.

Providing Delay-Guaranteed Multicast Transmission Services for an SDN-Based Publish/Subscribe System

Providing end-to-end delay guarantees in traditional Internet is a complex task due to the distributed nature of TCP/IP protocols. Software Defined Networking(SDN) gives a new dimension to improve QoS(Quality of Service) as it can benefit from its flexibility, programmability and centralized view. In this paper, we provide delay-guaranteed data transmission service instead of "best efforts" service for a topic-based publish/subscribe system by means of exploring these specific features of SDN. We attribute this routing problem in such conditions to Delay-Constraint Lowest Cost Steiner Tree(DCLCST) problem. To solve it, we compute the shortest delay paths from source node to every subscribe node and the shortest cost paths from every subscribe node to any other node using dijkstra algorithm. Then we construct a delay-constraint least cost steiner tree for per-topic based on these paths as multicast tree. We also present experimental results to demonstrate the effectiveness of the algorithms and methods we proposed.

Spatiotemporal variation of agricultural patterns in different geomorphologic and climatic environments in the eastern Loess Plateau,north-central China during the late Neolithic and Bronze Ages

Human settlement and agricultural development are closely linked to local geomorphological and climatic environments.However,the variation in agricultural systems in different environmental and prehistoric contexts remains unknown.We report new archaeobotanical and radiocarbon dates from 34 Neolithic and Bronze Age sites in the Hutuo River Valley(HTRV)in north-central China and compare them with updated archaeobotanical studies in the Sushui River Valley(SSRV)and Henan Province(HNP),to explore the similarities and differences of agricultural patterns under different geomorphologic and climatic environments in north-central China.Our results reveal that humans consistently cultivated foxtail and broomcorn millet in the HTRV from the Miaodigou(6000–5700 cal.a BP)to the Shang-Zhou(3600–2256 cal.a BP)period,despite the introduction of wheat and barley into the area around 4000 a BP.Climate conditions and hilly landforms in the HTRV,SSRV and some parts of the HNP led people to develop foxtail and broomcorn millet dry land farming practices between 7000 and 3000 a BP.Alternatively,in other areas of the HNP,the climate conditions and alluvial plains enabled people to develop a mixed agriculture of millets,soybeans,and rice from 7000 to 4000 a BP,with the addition of wheat between 4000 and 3000 a BP.Farmers’different agricultural technologies and interactions with foreign cultures may have also influenced the formation of different agricultural patterns in the three regions between 7000 and 3000 a BP.Population growth during 7000–3000 a BP can explain the overall propensity of the higher-yield foxtail millet rather than broomcorn millet as the main cultivated crop.In the HTRV,however,higher proportions of broomcorn millet(as compared to the SSRV and HNP),may reflect the greater drought and heat tolerance of broomcorn millet,representing an adaptive agricultural strategy in the river valley.