Optimizing Higgs factories by modifying the recoil mass

It is difficult to measure the $WW$-fusion Higgs production process ($e^+e^- \to \nu \bar{\nu} h$) at a lepton collider with a center of mass energy of 240-250 GeV due to its small rate and the large background from the Higgsstrahlung process with an invisible $Z$ ($e^+e^- \to hZ,\,Z\to \nu\bar{\nu}$). We construct a modified recoil mass variable, $m^p_{\rm recoil}$, defined using only the 3-momentum of the reconstructed Higgs particle, and show that it can better separate the $WW$-fusion and Higgsstrahlung events than the original recoil mass variable $m_{\rm recoil}$. Consequently, the $m^p_{\rm recoil}$ variable can be used to improve the overall precisions of the extracted Higgs couplings, in both the conventional framework and the effective-field-theory framework. We also explore the application of the $m^p_{\rm recoil}$ variable in the inclusive cross section measurements of the Higgsstrahlung process, while a quantitive analysis is left for future studies.Comment: 25 pages, 8 figure

ENERGY-AWARE OPTIMIZATION FOR EMBEDDED SYSTEMS WITH CHIP MULTIPROCESSOR AND PHASE-CHANGE MEMORY

Over the last two decades, functions of the embedded systems have evolved from simple real-time control and monitoring to more complicated services. Embedded systems equipped with powerful chips can provide the performance that computationally demanding information processing applications need. However, due to the power issue, the easy way to gain increasing performance by scaling up chip frequencies is no longer feasible. Recently, low-power architecture designs have been the main trend in embedded system designs. In this dissertation, we present our approaches to attack the energy-related issues in embedded system designs, such as thermal issues in the 3D chip multiprocessor (CMP), the endurance issue in the phase-change memory(PCM), the battery issue in the embedded system designs, the impact of inaccurate information in embedded system, and the cloud computing to move the workload to remote cloud computing facilities. We propose a real-time constrained task scheduling method to reduce peak temperature on a 3D CMP, including an online 3D CMP temperature prediction model and a set of algorithm for scheduling tasks to different cores in order to minimize the peak temperature on chip. To address the challenging issues in applying PCM in embedded systems, we propose a PCM main memory optimization mechanism through the utilization of the scratch pad memory (SPM). Furthermore, we propose an MLC/SLC configuration optimization algorithm to enhance the efficiency of the hybrid DRAM + PCM memory. We also propose an energy-aware task scheduling algorithm for parallel computing in mobile systems powered by batteries. When scheduling tasks in embedded systems, we make the scheduling decisions based on information, such as estimated execution time of tasks. Therefore, we design an evaluation method for impacts of inaccurate information on the resource allocation in embedded systems. Finally, in order to move workload from embedded systems to remote cloud computing facility, we present a resource optimization mechanism in heterogeneous federated multi-cloud systems. And we also propose two online dynamic algorithms for resource allocation and task scheduling. We consider the resource contention in the task scheduling

Chinese Migrant Parents and Complementary Schooling in Germany. A Sociolinguistic Ethnography

How do parents cooperate with each other, what value do they attach to their interaction and how is the degree of cooperation related to social status? The study takes a close look at the social relationships among various groups of Chinese parents at a Chinese Mandarin language school in a metropolitan city in Germany. Taking an ethnographic approach, it captures a vivid picture of the parental social interactions in and outside the Chinese school setting. The study reveals the significance of social interactions, discussing it in relation to the parents’ socioeconomic backgrounds and individual migrant trajectories. (DIPF/Verlag

Chinese Migrant Parents and Complementary Schooling in Germany

Wie kooperieren Eltern miteinander, welchen Wert messen sie ihrer Interaktion bei und wie hängt der Grad der Kooperation mit dem sozialen Status und zusammen? Die Studie nimmt die sozialen Beziehungen zwischen verschiedenen Gruppen chinesischer Eltern an einer chinesischen Mandarin-Sprachschule in einer Großstadt in Deutschland unter die Lupe. Mit Hilfe eines ethnographischen Ansatzes wird ein lebendiges Bild der elterlichen sozialen Interaktionen innerhalb und außerhalb des chinesischen Schulumfelds gezeichnet. Die Studie zeigt die Bedeutung sozialer Interaktionen auf und erörtert sie im Zusammenhang mit dem sozioökonomischen Hintergrund ihrer Migrationsverläufe; How do parents cooperate with each other, what value do they attach to their interaction and how is the degree of cooperation related to social status? The study takes a close look at the social relationships among various groups of Chinese parents at a Chinese Mandarin language school in a metropolitan city in Germany. Taking an ethnographic approach, it captures a vivid picture of the parental social interactions in and outside the Chinese school setting. The study reveals the significance of social interactions, discussing it in relation to the parents’ socioeconomic backgrounds and individual migrant trajectories

Chinese Migrant Parents and Complementary Schooling in Germany

Wie kooperieren Eltern miteinander, welchen Wert messen sie ihrer Interaktion bei und wie hängt der Grad der Kooperation mit dem sozialen Status und zusammen? Die Studie nimmt die sozialen Beziehungen zwischen verschiedenen Gruppen chinesischer Eltern an einer chinesischen Mandarin-Sprachschule in einer Großstadt in Deutschland unter die Lupe. Mit Hilfe eines ethnographischen Ansatzes wird ein lebendiges Bild der elterlichen sozialen Interaktionen innerhalb und außerhalb des chinesischen Schulumfelds gezeichnet. Die Studie zeigt die Bedeutung sozialer Interaktionen auf und erörtert sie im Zusammenhang mit dem sozioökonomischen Hintergrund ihrer Migrationsverläufe; How do parents cooperate with each other, what value do they attach to their interaction and how is the degree of cooperation related to social status? The study takes a close look at the social relationships among various groups of Chinese parents at a Chinese Mandarin language school in a metropolitan city in Germany. Taking an ethnographic approach, it captures a vivid picture of the parental social interactions in and outside the Chinese school setting. The study reveals the significance of social interactions, discussing it in relation to the parents’ socioeconomic backgrounds and individual migrant trajectories

KAM theorem on modulus of continuity about parameter

In this paper, we study the Hamiltonian systems $H\left( {y,x,\xi ,\varepsilon } \right) = \left\langle {\omega \left( \xi \right),y} \right\rangle + \varepsilon P\left( {y,x,\xi ,\varepsilon } \right)$, where $\omega$ and $P$ are continuous about $\xi$. We prove that persistent invariant tori possess the same frequency as the unperturbed tori, under certain transversality condition and weak convexity condition for the frequency mapping $\omega$. As a direct application, we prove a KAM theorem when the perturbation $P$ holds arbitrary H\"{o}lder continuity with respect to parameter $\xi$. The infinite dimensional case is also considered. To our knowledge, this is the first approach to the systems with the only continuity in parameter.Comment: 23 page

FAST SPEED EXPANSION TECHNIQUE FOR THE TRANSIENT ANALYSIS OF AUTOMOTIVE CLUTCHES

ABSTRACT The transient modal analysis method (TMA) has been used to solve the inhomogeneous (loaded) transient thermoelastic contact problem (ITTE

Effect of irrigation frequency during the growing season of winter wheat on the water use efficiency of summer maize in a double cropping system

Our aim was to investigate the potential effects of irrigation frequency during the growing season of winter wheat on the water use efficiency (WUE) of summer maize in a double cropping system. To this end, we conducted a field experiment with winter wheat cultivated with 1, 2, and 3 irrigation applications with 120 mm water at the time of stem elongation, heading, or milking. The results showed that later irrigation applications increased soil moisture before sowing (SMBS) of summer maize. Summer maize grain yield was enhanced in both the common and excessively rainy years with increased SMBS; however, irrigation during the later growing season of winter wheat in rainy years could increase deep percolation of summer maize. In common and rainy years, the more the SMBS, the higher was the grain yield of summer maize. The highest WUE for summer maize was obtained when it was grown after winter wheat irrigated with 120 mm water at milking or 60 mm water at each, the stem elongation and heading stages. Considering the combined WUE of winter wheat and summer maize, the authors think that winter wheat should be irrigated at the stem elongation and heading stages to achieve reasonable WUE and grain yield for both crops