1,928 research outputs found
Opportunities and threats analysis for European born global companies on the Chinese market
Companies which do not follow traditional internationalization path, but start international activities
immediately after their founding, are called born global companies in the international literature.
This relatively new type of international entrepreneurship can be challenging due to limited
international experience and lack of resources. It seems even more diffi cult to internationalize
a venture directly from Europe to the Chinese market. The purpose of the paper is to analyze potential
opportunities and threats for European born globals entering the Chinese market. The study
shows that the main opportunities provided by the Chinese market are: its size, rapid growth (which
is, however, slowing down), increasing consumer middle class, modern infrastructure, cheap workforce
supply, improvement in workforce qualifi cations and political stability. Unfortunately, there
are also some threats of rapid internationalization in the Chinese market which are caused by cultural,
social and political differences. The main threats of the Chinese market are: rising costs,
slowing market growth, increasing competition, HR problems, dumping, protectionism and legal
issues (including intellectual property rights, corruption, lack of transparency, certifi cation and requirements
concerning technical norms)
Ultra-Soft Electromagnetic Docking with Applications to In-Orbit Assembly
Docking small satellites in space is a high-risk operation due to the uncertainty in relative position and orientation and the lack of mature docking technologies. This is particularly true for missions that involve multiple docking and undocking procedures like swarm-based construction and reconfiguration. In this paper, an electromagnetic docking system is proposed to mitigate these risks through robust, ultra-soft, propellant-free docking. Designed with reconfigurable self-assembly in mind, the gripping mechanism is androgynous, able to dock at a variety of relative orientations, and tolerant of small misalignments. The mechanical and control design of the system is presented and tested in both simulation and on a fleet of 6 degree-of-freedom (DOF) spacecraft simulators. The spacecraft simulators oat on the precision flat floor facility in the Caltech Aerospace Robotics and Control lab, the largest of its kind at any university. The performance of the electromagnetic docking system on-board the simulators is then compared against a propulsive docking system
Decentralized Formation Pose Estimation for Spacecraft Swarms
For spacecraft swarms, the multi-agent localization algorithm must scale well with the number of spacecraft and adapt to time-varying communication and relative sensing networks. In this paper, we present a decentralized, scalable algorithm for swarm localization, called the Decentralized Pose Estimation (DPE) algorithm. The DPE considers both communication and relative sensing graphs and defines an observable local formation. Each spacecraft jointly localizes its local subset of spacecraft using direct and communicated measurements. Since the algorithm is local, the algorithm complexity does not grow with the number of spacecraft in the swarm. As part of the DPE, we present the Swarm Reference Frame Estimation (SRFE) algorithm, a distributed consensus algorithm to co-estimate a common Local-Vertical, Local-Horizontal (LVLH) frame. The DPE combined with the SRFE provides a scalable, fully-decentralized navigation solution that can be used for swarm control and motion planning. Numerical simulations and experiments using Caltech’s robotic spacecraft simulators are presented to validate the effectiveness and scalability of the DPE algorithm
Decentralized formation pose estimation for spacecraft swarms
For spacecraft swarms, the multi-agent localization algorithm must scale well with the number of spacecraft and adapt to time-varying communication and relative sensing networks. In this paper, we present a decentralized, scalable algorithm for swarm localization, called the Decentralized Pose Estimation (DPE) algorithm. The DPE considers both communication and relative sensing graphs and defines an observable local formation. Each spacecraft jointly localizes its local subset of spacecraft using direct and communicated measurements. Since the algorithm is local, the algorithm complexity does not grow with the number of spacecraft in the swarm. As part of the DPE, we present the Swarm Reference Frame Estimation (SRFE) algorithm, a distributed consensus algorithm to co-estimate a common Local-Vertical, Local-Horizontal (LVLH) frame. The DPE combined with the SRFE provides a scalable, fully-decentralized navigation solution that can be used for swarm control and motion planning. Numerical simulations and experiments using Caltech’s robotic spacecraft simulators are presented to validate the effectiveness and scalability of the DPE algorithm
Identification and characterization of a large family of superbinding bacterial SH2 domains
Src homology 2 (SH2) domains play a critical role in signal transduction in mammalian cells by binding to phosphorylated Tyr (pTyr). Apart from a few isolated cases in viruses, no functional SH2 domain has been identified to date in prokaryotes. Here we identify 93 SH2 domains from Legionella that are distinct in sequence and specificity from mammalian SH2 domains. The bacterial SH2 domains are not only capable of binding proteins or peptides in a Tyr phosphorylation-dependent manner, some bind pTyr itself with micromolar affinities, a property not observed for mammalian SH2 domains. The Legionella SH2 domains feature the SH2 fold and a pTyr-binding pocket, but lack a specificity pocket found in a typical mammalian SH2 domain for recognition of sequences flanking the pTyr residue. Our work expands the boundary of phosphotyrosine signalling to prokaryotes, suggesting that some bacterial effector proteins have acquired pTyr-superbinding characteristics to facilitate bacterium-host interactions
The preparation and characterization of three solutions of plasmid DNA containing a ruminant-specific fragment with defined copy number concentrations - Reference Materials: IRMM-AD482a,IRMM-AD482b, IRMM-AD482c
This report describes the processing of a set of plasmid solutions, IRMM-AD482a, b and c. The material was produced following ISO Guide 34:2009.
A DNA fragment specific for the identification of ruminant meat were cloned into a pUC18 vector to construct the pIRMM-0103 plasmid. The plasmid was diluted to three different concentration levels.
Between unit-homogeneity was quantified and stability during dispatch and storage were assessed in accordance with ISO Guide 35:2006.
The materials are intended for the determination of a cut-off value to discriminate positive samples from negative samples by quantitative PCR. As any reference material, the materials can also be used for control charts or validation studies. The RM is available as a set of three plastic tubes containing 1 mL of plasmid solution. The minimum amount of sample to be used is 4 μL.JRC.D.2-Standards for Innovation and sustainable Developmen
A set of three plasmid DNA calibration solutions bearing a ruminant-specific DNA fragment Certified Reference Materials: ERM-AD482a,ERM-AD482b, ERM-AD482c
This report describes the preparation and characterisation of a set of three plasmid solutions, ERM-AD482a, ERM-AD482b and ERM-AD482c. The material was produced in accordance with ISO Guide 34:2009 [1].
A DNA fragment specific for the identification of ruminant meat was cloned into a pUC18 vector to construct the pIRMM-0103 plasmid. The nucleic acid sequence of the entire pIRMM-0103 plasmid was determined by dye terminator cycle sequencing applying the primer walking method on the entire plasmid. The plasmid was put into a solution and its concentration was measured by ultraviolet (UV) spectrophotometry. Afterwards this solution was gravimetrically diluted to obtain three different plasmid concentration levels. The plasmid copy number concentration of the three concentration levels were certified by digital quantitative polymerase chain reaction methods (dPCR). In addition, between-unit homogeneity, as well as short-term long-term and freeze-thaw stability was assessed in accordance with ISO Guide 35:2006 [2].
The materials are intended for the determination of a cut-off value to discriminate positive samples (containing the ruminant target sequence) from negative samples by quantitative PCR as defined in the Standard Operating Procedure of the EU Reference Laboratory for animal proteins (EURL-AP) according to Commission Regulation No 51/2013 [3, 4].
As any certified reference material (CRM), the materials can also be used for control charts or validation studies. The CRM is available as a set of three vials each containing at least 1 mL of plasmid solution. The minimum amount of sample to be used is 4 µL.JRC.D.2-Standards for Innovation and sustainable Developmen
Neuromuscular and mobility responses to a vibration session in hypoxia in multiple sclerosis
The aim of this study was to investigate the acute effects of vibration training (WBVT) under hypoxic and normoxic conditions on the voluntary rate of force development (RFD), balance and muscle oxygen saturation (SMO2) in persons with Multiple Sclerosis (MS). 10 participants completed the study (30 % males, 44.4±7.7 years, 164.3±8.9cm, 65.2±11.1kg, 2.5±1.3 Expanded Disability Status Scale, 24.1± 4.0 kg.m− 2 BMI). Maximal force, RFD during isometric knee extension, static balance with eyes open and closed and sit-to-stand test were evaluated before and immediately after one session of WBVT (12 60-s bout of vibration; frequency 35Hz; amplitude 4mm; 1-min rest intervals) under both normoxic and hypoxic conditions. In addition, SMO2 of the gastrocnemius lateralis was assessed during each condition. No changes were found in force, static balance and sit-to-stand test. Time-to-peak RFD increased in the left leg (p = 0.02) and tended to increase in the right leg (p = 0.06) after the hypoxic session. SMO2 resulted in significant increases from the initial to final intervals of the WBVT under both hypoxic and normoxic conditions (p < 0.05). Increases in SMO2 during WBVT demonstrates muscle work that may contribute to the observed muscle adaptations in long-term WBVT programs without inducing decreases in neuromuscular activation, physical function and balance within a session
Effect of low-dose steroid on NF-κB and caspase-3 intestinal expression in a sepsis mouse model
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