Theme and Style in Hemingway''''s A Farewell to Arms

I.I ntroduction Ernest Hemingway is one of the foremost American writers, an epoch-making stylist with a highly original talent. Like no other writers of his time, he has become a symbol not merely of literature and books, but of a particular way of living and dying. His name is often associated with war and courage, with love and violence, with beauty and death. Throughout his life, Hemingway wrote a lot, and A Farewell to Arms is one of his early works. As what American critic John Brow…     

A New Fossil Species of Celastrus Found in SW Yunnan

正Celastrus L.is a deciduous or evergreen woody vine.The genus is characterized by a hardy stem with orbicular to ovate lenticels,alternate simple leaves with serrate or subentire margin.It was revised into two subgenera with two series,namely subgenus Celastrus with series Paniculati(seven species)and series Axillares(17 species).Many     

Novel Progress in Rewritable High Density Optical Data Storage Technology

In collaboration with colleagues at the University of Science and Technology of China and East China University of Science and Technology, CAS researchers from the Institute of Chemistry have synthesized a novel spironaphthoxazine SOFC molecule with a stable ringopened photomerocyanine form by incorporating a ferrocene moiety to the parent spironaphthoxazine. Their work has been reported in a recent issue of Advanced Materials.     

WU Liangyong: The Humanistic Architect of Our Time

In the glow of the rising sun, a white-haired elder is slowly pushing a cart stuffed with books and walking across the campus of Tsinghua University towards his office. He is bowed with age, but his steps are steady and firm. His wrinkled face shines to tell a man of vigor and vision. He is Prof. WU Liangyong,     

Bridging Institutional and Continental Gaps through Scientific Excellence——An Interview with Dr.Abiodun Humphrey Adebayo at the Institute of Microbiology

The interview with Abio 1 and his supervisor Prof. ZHANG Lixin took place on a chilly December day towards the end of 2012, after a heavy snow had blanketed Beijing city. In Prof. Zhang’s cozy office at the Institute of Microbiology, the Chinese Academy of Sciences (IMCAS), Abio welcomed the reporter with a firm handshake and a sunny smile. Three months after arriving in Beijing, this tall, outgoing and hard-working Nigerian has well adapted himself to the work and life here.     

Wu Liangyong： The Humanistic Architect of Our Timc

In the glow of the rising sun, a white-haired elder is slowly pushing a cart stuffed with books and walking across the campus of Tsinghua University towards his office. He is bowed with age, but his st...     

A demo device for new approach of wave power generation

In cooperation with Chuanshiyu Machinery Co., Ltd., researchers with the CAS Institute ofElectrical Engineering （IEE） have worked out a demonstration device that employs a novel approach to converting the energy harbored by sea waves into electricity.     

New Wasp Species Protects Its Progeny with Dead Ants

<正>Recently,a new wasp species with a unique nestconstruction behavior was discovered in southeast Chinese forests by an international research team from the University of Freiburg,the Museum fur Naturkunde Berlin and the Institute of Zoology,Chinese Academy of Sciences in Beijing.The"antwall wasp"protects its progeny with a nest-closing plug out of dead ants,which is a behavior that has never been reported from the entire animal kingdom.     

Nanoparticle PCR： A New Approach of DNA Amplification

The polymerase chain reac- tion (PCR) is a technique for quickly “cloning” a par- ticular piece of DNA in the test tube (rather than in living cells like E. coli). Thanks to this procedure, one can make virtually unlimited copies of a single DNA molecule even though it is initially present in a mix- ture containing many different DNA molecules. In cooperation with research- ers from Shanghai Jiao Tong University, CAS scientists have come up with a novel approach to improve the specif…     

Novel Progress in Rewritable High Density Optical Data Storage Technology

In collaboration with col-leagues at the University ofScience and Technology ofChina and East China Universityof Science and Technology, CASresearchers from the Institute ofChemistry have synthesized anovel spironaphthoxazine SOFCmolecule with a stable ring-opened photomerocyanine formby incorporating a ferrocenem o i e t y t o t h e p a r e n tspironaphthoxazine. Their workhas been reported in a recent is-sue of Advanced Materials.The researchers announcedthat two-dimensional luminesc…     

高校励志资源整合体系研究——以安徽大学为例

本文从励志内涵入手,在分析高校励志资源内涵和特征的基础上,研究励志资源对大学生励志过程的影响,构建大学励志资源整合模式,并以安徽大学为例介绍励志资源整合的成效。     

Heterogeneous immunoassays in microfluidic format using fluorescence detection with integrated amorphous silicon photodiodes

Miniaturization of immunoassays through microfluidic technology has the potential to decrease the time and the quantity of reactants required for analysis, together with the potential of achieving multiplexing and portability. A lab-on-chip system incorporating a thin-film amorphous silicon (a-Si:H) photodiode microfabricated on a glass substrate with a thin-film amorphous silicon-carbon alloy directly deposited above the photodiode and acting as a fluorescence filter is integrated with a polydimethylsiloxane-based microfluidic network for the direct detection of antibody-antigen molecular recognition reactions using fluorescence. The model immunoassay used consists of primary antibody adsorption to the microchannel walls followed by its recognition by a secondary antibody labeled with a fluorescent quantum-dot tag. The conditions for the flow-through analysis in the microfluidic format were defined and the total assay time was 30 min. Specific molecular recognition was quantitatively detected. The measurements made with the a-Si:H photodiode are consistent with that obtained with a fluorescence microscope and both show a linear dependence on the antibody concentration in the nanomolar-micromolar range.     

Robust adaptive tracking with an additional plant identifier for a class of nonlinear systems

In this paper, we develop two new model reference adaptive control (MRAC) schemes for a class of nonlinear dynamic systems that is robust with respect to an uncertain state (output) dependent nonlinear perturbations and/or external disturbances with unknown bounds. The design is based on a controller parametrization with an adaptive integral action. Two types of adaptive controllers are considered—the state feedback controller with a plant parameter identifier, and the output feedback controller with a linear observer.     

Digital redesign tracker for cascaded analog systems with state saturation and external loads

This paper presents a newly developed digital redesign control scheme with a weighted switching strategy and output-reference tracking, for a cascaded analog system with state saturation and external loads. The proposed method improves the generally poor transition response and output deviation caused by state-saturation constraint and external loads. It replaces an existing or theoretically well-designed analog controller with state saturation, by a digital controller with almost identical performance.     

Spontaneous Tumor Lysis Syndrome in an Infant: A Case Report

Tumor lysis syndrome has been observed in patients with malignancies with high cellular burden and high cell turnover, tumor sensitive to therapy, especially after initiating medical treatment. It very rarely occurs spontaneously. The case described here is of 6 months male infant who presented with fever since 1 month and loose stools associated with blood since 15 days. The laboratory investigations showed lactate dehydrogenase (LDH) of 6,192 IU/L and serum uric acid 18.2 mg/dl along with pancytopenia. The infant presented with electrolyte abnormalities and renal failure.     

A noise-filtering event generator for PIDPlus controllers

In this paper we propose a new event generator, which has strong noise-filtering capabilities, to be used in event-based control systems with a PIDPlus controller. An approximate frequency analysis is performed in order to characterize the event generator system and tuning guidelines are provided for its design parameter. Simulation and experimental results obtained with a laboratory setup demonstrate the effectiveness of the methodology in providing a satisfactory performance related to set-point and load disturbance step responses with a total variation that is significantly reduced with respect to the standard cases.     

青出于蓝而胜于蓝

数学课上解一道几何证明题时,老师用传统思维模式证明出错,学生另辟蹊径寻求解题新思维,求得科学解答。一个课堂小插曲,引发一个道理：青出于蓝而胜于蓝。     

Distributed formation control for multiple quadrotor UAVs under Markovian switching topologies with partially unknown transition rates

This paper addresses distributed formation control for a group of quadrotor unmanned aerial vehicles (UAVs) under Markovian switching topologies with partially unknown transition rates. Instead of the general stochastic topology, the graph is governed by a set of Markov chains to the edges, which can recover the traditional Markovian switching topologies in line with the practical communication network. Extended high gain observers (EHGOs) are constructed with a two-time-scale format to deal with the issue of nonlinear input coefficients, so that there could be a higher estimation precision of the system uncertainties. To impel multiple quadrotor UAVs to achieve a predesigned formation shape, a modified integral sliding mode (ISM) control protocol is proposed here with a multi-time-scale structure, which allows independent analysis of the dynamics in each time scale. The stability proof for the system state space origin is derived from the singular perturbation method and Lyapunov stability theory. In addition, the introduced ISM controller can deal with the time varying desired references with the bounded accelerations and is robust to the disturbances. Finally, simulations on six quadrotor UAVs are given to verify the effectiveness of the theoretical results.     

Ethical considerations in an online community: the balancing act

With the emergence and rapid growth of Social Media, a number of government departments in several countries have embraced Social Media as a privilege channel to interact with their constituency. We are exploring, in collaboration with the Australian Department of Human Services, the possibility to exploit the potential of social networks to support specific groups of citizens. To this end, we have developed Next Step, an online community to help people currently receiving welfare payments find a job and become financially self-sufficient. In this paper, we explore some ethical issues that arise when governments engage directly with citizens, in particular with communities in difficult situations, and when researchers are involved. We describe some of the challenges we faced and how we addressed them. Our work highlights the complexity of the problem, when an online community involves a government department and a welfare recipient group with a dependency relationship with that department. It becomes a balancing act, with the need to ensure privacy of the community members whilst still fulfilling the government’s legal responsibilities. While difficult, these issues must be addressed if governments are to engage with their citizens using Social Media.     

A Case Report of a 14?Year Old Male with Pseudohypoparathyroidism Associated with Multiple Hormonal Resistance

Albright hereditary osteodystrophy (AHO) is a rare hereditary metabolic disorder that may or may not be associated with resistance to parathyroid hormone (pseudohypoparathyroidism) or other hormones. The disorder is commonly characterized by a constellation of dysmorphic physical features and with biochemical levels that demonstrate hypocalcaemia and hyperphosphatemia. We report here a clinical case of a 14 year old male with AHO and we discuss his clinical features, radiographic and laboratory findings along with treatment.