A ’Millipede’ scanner model - Energy consumption and performance

This short report (1) describes an energy model for the seek and read/write operations in a mass-balanced Y-scanner for parallel-probe storage by IBM [1] and (2) updates the settings of the MEMS model in DiskSim with recent published figures from this XY-scanner. To speedup system simulations, a straight forward second-order model is used without control loop. Read/write operation is modeled by quasi-static calculations. To approximate seek behavior, ’bang-bang’ control is assumed; the result is close to the actual behavior with control loop [2]. Unfortunately, no energy measurements were available to validate the model. Using the proposed energy model, we are able to study the energy consumption of a MEMS-based storage device for different application areas and file systems

In the Face of Conflict

In the chaos of conflict, amongst the confusion, emotion, and fear lies truth like the eye of a raging storm. Within this, one may find peace, tranquility, and the storm will follow in suit

Voices from Varick: Detainee Grievances at New York City's Only Federal Immigration Detention Facility

Analyzes one year of grievances filed by immigration detainees housed in the Varick Federal Detention Facility. It documents detainee stories of inadequate medical care and mistreatment by the facility's staff. It adds to the growing chorus of voices that have concluded that the federal government has failed in its responsibilities to provide adequate care to detainees housed in immigration facilities

Energy-Efficient Streaming Using Non-volatile Memory

The disk and the DRAM in a typical mobile system consume a significant fraction (up to 30%) of the total system energy. To save on storage energy, the DRAM should be small and the disk should be spun down for long periods of time. We show that this can be achieved for predominantly streaming workloads by connecting the disk to the DRAM via a large non-volatile memory (NVM). We refer to this as the NVM-based architecture (NVMBA); the conventional architecture with only a DRAM and a disk is referred to as DRAMBA. The NVM in the NVMBA acts as a traffic reshaper from the disk to the DRAM. The total system costs are balanced, since the cost increase due to adding the NVM is compensated by the decrease in DRAM cost. We analyze the energy saving of NVMBA, with NAND flash memory serving as NVM, relative to DRAMBA with respect to (1) the streaming demand, (2) the disk form factor, (3) the best-effort provision, and (4) the stream location on the disk. We present a worst-case analysis of the reliability of the disk drive and the flash memory, and show that a small flash capacity is sufficient to operate the system over a year at negligible cost. Disk lifetime is superior to flash, so that is of no concern

How migrating 0.0001% of address space saves 12% of energy in hybrid storage

We present a simple, operating-\ud system independent method to reduce the num-\ud ber of seek operations and consequently reduce\ud the energy consumption of a hybrid storage\ud device consisting of a hard disk and a flash\ud memory. Trace-driven simulations show that\ud migrating a tiny amount of the address space\ud (0.0001%) from disk to flash already results\ud in a significant storage energy reduction (12%)\ud at virtually no extra cost. We show that the\ud amount of energy saving depends on which part\ud of the address space is migrated, and we present\ud two indicators for this, namely sequentiality and\ud request frequency. Our simulations show that\ud both are suitable as criterion for energy-saving\ud file placement methods in hybrid storage. We\ud address potential wear problems in the flash\ud subsystem by presenting a simple way to pro-\ud long its expected lifetime.\u

NOUVELLES TECHNOLOGIES ET CONNAISSANCES ABONDANTES : ENJEUX SOCIO-DIDACTIQUES

The use of new technologies in all areas of life becomes essential especially as a mean of communication. Social networks are important in the communication of individuals and establishments. Many departments, private and public establishments have an account on Facebook or Twitter which they use as an official mean of communication. As new technologies provide us with open and accessible means of communication that make our lives easier, some people use them in ways that can harm our society. Schools and families must play a role in teaching children to sort through digital information and check the credibility of the document and its source. Everyone should be aware that thinking before forward unverified information is a social duty L\u27utilisation des nouvelles technologies dans tous les domaines de la vie devient indispensable surtout comme moyen de communication. Les réseaux sociaux deviennent importants dans la communication des individus et des établissements. Beaucoup de départements et des établissements privés et publics ont un compte Facebook ou Twitter qu\u27ils utilisent comme moyen de communication officiel. Comme les nouvelles technologies nous offre des moyens de communication ouvertes et accessibles qui nous facilitent la vie, certains gens les utilisent d\u27une façon qui peut nuire à notre société. Les établissements scolaires et les familles doivent jouer un rôle dans l\u27apprentissage des enfants à trier les informations numériques et à vérifier la crédibilité du document et sa source. Tout le monde doit être sensibilisé au fait que réfléchir avant de faire circuler une information non-vérifiée est un devoir social

IDEOLOGIE ET METAMORPHOSE DE LA LANGUE

Language, like any object in this world, is susceptible to various changes. These changes, visible or invisible, can be due to a natural development, or to unexpected external reasons. The language is also exposed to a natural and continuous mutation, and to a mutation due in general to external reasons. The metamorphosis that the language undergoes can be studied from three points of view: the close relationship between language and identity; the ideological side in the historical evolution of the language; graphic and phonic mutation in the language. Who says language says identity because these two elements constitute an important part in the existence, the personality even the reasoning of the individual. Who touches my language, touches my identity , a statement that we often hear even by immigrants who do not speak well the language of their parents. Through the history of the French language, we can understand the external reasons that lead to the perceived or unnoticed metamorphosis of the language: political conflicts, wars, invasions, immigration, commercial transactions, science, translation, the political weight of the country, etc. The first linguistic element by which linguistic metamorphosis begins is the phonic side. The pronunciation of words is very fragile in front of the elements that cause the mutation of the language. This is why we notice that the change of the language begins with the pronunciation, passing through the orthography ending with the syntactic and the morphology

Numerical analysis of a reinforced concrete beam under blast loading

The types of Dynamic loads that might face an engineer during any design procedure vary. One of these loads is the explosion's pressure on buildings which is in other words the blast load. This research has examined the possibility of using a finite element method as a tool for predicting the dynamic response of blast loaded reinforced concrete beams. In this study, the advanced software, ABAQUS is used in order to model materials and consider the material nonlinearity, stiffness degradation and strain rate effects. Experimental results for several beams under explosion are chosen to be modeled and verified using ABAQUS. These experiments were carried out at the National University of Defense Technology in China. The results show that the material properties of concrete under impact loads (high strain rates) can be well defined in ABAQUS. Also the built in model CONWEP for blast load in ABAQUS can be used in the simulation process with an acceptable error

Contractual Liberty in Labor Legislation “The crisis of labor contract” A Comparative Study of Syrian and French Laws

This research aims to study the distinctiveness of contractual liberty in labor legislation through analyzing its social and economic as well as legal essence. The research sheds light on the value this freedom was given in the French labor legislations and projects the French experience on the current Syrian legislations with a view to better the last. This paper also connects the analysis of the origin of this freedom in a comparative approach to both the French and the Syrian laws, drawing on the French experience and the specific steps taken by the French legislator in this regards. To that end, the research refers back to the history of this freedom to get to know its origin and stages of its development in order to define it and study the scope of its application

Exploration of Sales-Marketing Interface Nuances in Saudi Arabia

Extant research on sales–marketing interface has ignored emerging markets as research contexts. This study uses grounded theory methodology and depth-interview data from 37 sales and marketing professionals in Saudi Arabia to explicate how firm contexts that are influenced by Islamic values may shape intraorganizational mechanisms between firm leadership and sales and marketing departments, moderate their roles in marketing strategy activities, and affect interface dynamics. Specifically, appreciation of high power distance and traditional authority allow top leadership to be extensively involved in firm\u27s everyday operations and there is a conspicuous absence of two-way dialog between top leadership and interface personnel. As a result, marketing strategy making authority is rarely transferred to sales and marketing. The context thus creates a chain of command with top leadership holding central authority, marketers preparing action plans and salespeople implementing those plans. Overall, this context brings forth certain hitherto unexplored perspectives on this interface