A Roadmap for HEP Software and Computing R&D for the 2020s

Particle physics has an ambitious and broad experimental programme for the coming decades. This programme requires large investments in detector hardware, either to build new facilities and experiments, or to upgrade existing ones. Similarly, it requires commensurate investment in the R&D of software to acquire, manage, process, and analyse the shear amounts of data to be recorded. In planning for the HL-LHC in particular, it is critical that all of the collaborating stakeholders agree on the software goals and priorities, and that the efforts complement each other. In this spirit, this white paper describes the R&D activities required to prepare for this software upgrade.Peer reviewe

Research and Design of a Routing Protocol in Large-Scale Wireless Sensor Networks

无线传感器网络，作为全球未来十大技术之一，集成了传感器技术、嵌入式计算技术、分布式信息处理和自组织网技术，可实时感知、采集、处理、传输网络分布区域内的各种信息数据，在军事国防、生物医疗、环境监测、抢险救灾、防恐反恐、危险区域远程控制等领域具有十分广阔的应用前景。 本文研究分析了无线传感器网络的已有路由协议，并针对大规模的无线传感器网络设计了一种树状路由协议，它根据节点地址信息来形成路由，从而简化了复杂繁冗的路由表查找和维护，节省了不必要的开销，提高了路由效率，实现了快速有效的数据传输。 为支持此路由协议本文提出了一种自适应动态地址分配算——ADAR（AdaptiveDynamicAddre...As one of the ten high technologies in the future, wireless sensor network, which is the integration of micro-sensors, embedded computing, modern network and Ad Hoc technologies, can apperceive, collect, process and transmit various information data within the region. It can be used in military defense, biomedical, environmental monitoring, disaster relief, counter-terrorism, remote control of haz...学位：工学硕士院系专业：信息科学与技术学院通信工程系_通信与信息系统学号：2332007115216

Direct Bound-Electron g-Factor Difference Measurement of Coupled Ions at Alphatrap

The Alphatrap experiment is a cryogenic Penning-trap setup with the main objective to determine the g factor of the electron bound to heavy nuclei. Within this thesis, the results of several such measurements are presented. Among these, the measurement of the g factor of 20Ne9+ exhibits a 3σ discrepancy between theory and experimental value, which has been attributed to the required input parameter of the atomic mass of 20Ne. An independent measurement has recently confirmed the deviation of the mass, fully resolving the discrepancy. Furthermore, a measurement of 22Ne9+ can be used to improve the precision of the atomic mass of 22Ne by a factor 8 compared to the literature value, when using the theoretically predicted g factor as an input. However, the main focus of this thesis is the development of a novel technique, which, based upon the coupling of two ions as an ion crystal, enables the most precise determination of a g-factor difference to date. This difference, determined for the isotopes 20Ne9+ and 22Ne9+ with a relative precision of 5.6 × 10−13 with respect to the g factor, improves the precision for isotopic shifts of g factors by about two orders of magnitude. Based upon the agreement with theory, the quantum electrodynamic contribution to the nuclear recoil can be confirmed. Alternatively, the result can be applied to improve the precision of the charge radius difference of the isotopes by about one order of magnitude or to constrain new physics by limiting a potential fifth-force of the Higgs-portal mechanism

Innovate New Service Development in a product-oriented healthcare corporation

To satisfy the growing needs of customers for services many product-oriented companies in various industries have started switching their focus from products towards service offerings. To stay competitive, New Service Development became an important concern for many companies to achieve. Company Z, which is one of the largest product-oriented corporations around the globe, continuously improved its New Product Development processes to successfully launch technology-driven product innovations. Aware of the current importance of service offerings, Company Z has integrated New Service Development into their processes but still faces challenges while developing their service offerings. A key role in developing and launching services plays the recently established New Services Design team of the service development and delivery function. The aim of this project was to identify the pitfalls of the current New Service Development process of the New Services Design team of company Z and identify opportunities for overcoming them to create an improved process framework that fits the flexibility required for services. The development and delivery stages of the New Service development process of company Z were reviewed and literature was researched about Services and New Service Development. It was found that New Service Development in order to be successful require, compared to NPD, a different mindset, high customer involvement and flexibility. However, product-oriented companies tend to keep their old New Product Development approaches for certainty reasons and the rather less researched field of modern New Service Development.Comparably, internal company research revealed that Company Z develops and delivers its service offerings with a product-oriented stage-gate process that originates from the company‘s product mindset. Based on the literature and qualitative research it was identified that this product-logic causes a highly fragmented and overstretched process that causes excessive amounts of bureaucracy, a strong focus on documentation, low customer involvement, and uncollaborative teams. In order to address any of these issues in the long term, the product-logic, which is the start point of the Causal Chain, needs to be replaced by a service-logic. To find a solution, in this rather academically unexplored research area, a Delphi study with several experts was conducted. Based on the Delphi study and literature it was discovered that an incremental change towards a service-logic can be fostered by establishing a high level of customer-centricity within the current New Service Development process. A solution was created that enables customer involvement within the New Service Development process of Company Z via early service prototyping to foster a service-oriented way of working. Finally, a Roadmap describes the implementation of the service prototyping approach in three horizons.Strategic Product Desig

Measurement of the bound-electron g-factor difference in coupled ions

Quantum electrodynamics (QED) is one of the most fundamental theories of physics and has been shown to be in excellent agreement with experimental results(1–5). In particular, measurements of the electron’s magnetic moment (or g factor) of highly charged ions in Penning traps provide a stringent probe for QED, which allows testing of the standard model in the strongest electromagnetic fields(6). When studying the differences between isotopes, many common QED contributions cancel owing to the identical electron configuration, making it possible to resolve the intricate effects stemming from the nuclear differences. Experimentally, however, this quickly becomes limited, particularly by the precision of the ion masses or the magnetic field stability(7). Here we report on a measurement technique that overcomes these limitations by co-trapping two highly charged ions and measuring the difference in their g factors directly. We apply a dual Ramsey-type measurement scheme with the ions locked on a common magnetron orbit(8), separated by only a few hundred micrometres, to coherently extract the spin precession frequency difference. We have measured the isotopic shift of the bound-electron g factor of the isotopes (20)Ne(9+) and (22)Ne(9+) to 0.56-parts-per-trillion (5.6 × 10(−13)) precision relative to their g factors, an improvement of about two orders of magnitude compared with state-of-the-art techniques(7). This resolves the QED contribution to the nuclear recoil, accurately validates the corresponding theory and offers an alternative approach to set constraints on new physics