51 research outputs found
Nematic-isotropic phase transition in diblock fused-sphere chain fluids
No full textA density-functional theory for the isotropic-nematic phase transition in fluids of rigid or semiflexible fused hard-sphere chains, developed previously by the authors, is extended to diblock chains each consisting of both a rigid and a flexible part. The theory is compared with recent Monte Carlo simulation results of McBride The theoretical results for the variation of pressure and nematic order parameter with density agree well with the simulation data over density ranges where the simulations find isotropic and nematic phases.PT: J; CR: BOUBLIK T, 1974, MOL PHYS, V27, P1415 BOUBLIK T, 1975, J CHEM PHYS, V63, P4084 BOUBLIK T, 1981, MOL PHYS, V44, P1369 BOUBLIK T, 1989, MOL PHYS, V68, P191 COTTER MA, 1977, J CHEM PHYS, V66, P1098 COTTER MA, 1978, PHYS REV A, V18, P2669 FORSMAN J, 2003, J CHEM PHYS, V119, P1889 FYNEWEVER H, 1998, J CHEM PHYS, V108, P1636 HONNELL KG, 1989, J CHEM PHYS, V90, P1841 JAFFER KM, 1999, J CHEM PHYS, V110, P11630 JAFFER KM, 2001, J CHEM PHYS, V114, P3314 KHOKHLOV AR, 1981, PHYSICA A, V108, P546 KHOKHLOV AR, 1982, PHYSICA A, V112, P605 MCBRIDE C, 2001, PHYS REV E 1, V64 MCBRIDE C, 2002, J CHEM PHYS, V117, P10370 MEHTA SD, 1996, J PHYS CHEM-US, V100, P10408 MULLER M, 2003, J CHEM PHYS, V118, P2929 SATO T, 1996, ADV POLYM SCI, V126, P85 TIAN P, 2001, J CHEM PHYS, V115, P9055 VARGA S, 2000, MOL PHYS, V98, P693 VEGA C, 1994, J CHEM PHYS, V100, P6727 WERTHEIM MS, 1987, J CHEM PHYS, V87, P7323 WHITTLE M, 1991, MOL PHYS, V72, P247 WILLIAMSON DC, 1995, MOL PHYS, V86, P819 WILLIAMSON DC, 1998, J CHEM PHYS, V108, P10294 YETHIRAJ A, 1998, MOL PHYS, V93, P693 ZHOU YQ, 1995, J CHEM PHYS, V103, P2688; NR: 27; TC: 3; J9: PHYS REV E; PN: Part 1; PG: 4; GA: 835RHSource type: Electronic(1
Existentialism In Urdu Poetry : اردو شاعری میں وجودیت
No full textExistentialism is a philosophical movement that originated in the 19th century with thinkers like Søren Kierkegaard and Friedrich Nietzsche. These figures emphasized the significance of individual existence, freedom, and personal responsibility in response to the decline of religious certainty and the advent of modernity. Existentialism asserts that individuals must create meaning in their lives through their choices and actions, while negotiating the existential weight of human freedom and the burden it entails. The concept of freedom in existentialism grants individuals the ability to shape their own lives, yet this freedom also brings with itself a great deal of anxiety and uncertainty. According to existentialist thought, humans are free to choose their paths, but with this freedom comes the responsibility to face the consequences of their decisions. It is this tension between freedom and responsibility that defines the human condition. The article further discusses how existentialism addresses the challenges of human existence, including the search for identity, the confrontation with mortality, and the pursuit of authenticity. By accepting the inherent uncertainty of life and embracing personal responsibility, individuals can create meaningful and authentic lives. In conclusion, existentialism highlights the importance of self-awareness, personal choice, and the courage to confront life’s uncertainties. It encourages individuals to find purpose in their existence through their actions and decisions, ultimately leading to a more profound understanding of the human experience. Existentialism has been explored in Urdu literature across various themes and genres. This article thoroughly examines the presence and articulation of the existentialist thought in the works of prominent Urdu poets such as Allama Iqbal, Noon Meem Rashid, Meeraji, Faiz Ahmed Faiz, Ahmed Nadeem Qasmi, and several others from the Urdu literary canon.
Keywords: Existentialism, freedom, human experience, meaning, Urdu Poetry, Allama Iqbal, Noon Meem Rashid, Meeraji, Faiz Ahmed Faiz, Ahmed Nadeem Qasm
Islamic Insurance: Trends, Opportunities and the Future of Takaful
No full textOffering an overview of the Takaful Islamic Insurance industry, this book provides in-depth insight from leading Shari\u27ah scholars and examines the challenges facing the Islamic insurance industry. This industry has gone through a rapid phase of expansion, with numerous Takaful operations in 30 countries and Takaful premiums covering non-life and life. This growth gives rise to both opportunities and challenges to traditional and Islamic financial institutions in the provision, distribution and underwriting of Islamic insurance products. Edited by the best-selling author Sohail Jaffer with contributions from 21 specialist contributors, this is the only book to explore every aspect of Islamic Insurance. Topics covered include: Takaful models and their development, Re-Takaful, retailing Takaful, distributing through joint ventures, innovations in the Northern and Southern African markets, integrating Takaful within conventional bancassurance, legal, regulatory and operational issues and the rating of Takaful companies
The nematic-isotropic phase transition in linear fused hard-sphere chain fluids
No full textWe present a modification of the generalized Flory dimer theory to investigate the nematic (N) to isotropic (I) phase transition in chain fluids. We focus on rigid linear fused hard-sphere (LFHS) chain molecules in this study. A generalized density functional theory is developed, which involves an angular weighting of the dimer reference fluid as suggested by decoupling theory, to accommodate nematic ordering in the system. A key ingredient of this theory is the calculation of the exact excluded volume for a pair of molecules in an arbitrary relative orientation, which extends the recent work by Williamson and Jackson for linear tangent hard-sphere chain molecules to the case of linear fused hard-sphere chains with arbitrary intramolecular bondlength. The present results for the N-I transition are compared with previous theories and with computer simulations. In comparison with previous studies, the results show much better agreement with simulations for both the coexistence densities and the nematic order parameter at the transition. (C) 1999 American Institute of Physics. [S0021-9606(99)51023-4].PT: J; CR: BOLHUIS P, 1997, J CHEM PHYS, V106, P666 BOUBLIK T, 1977, CHEM PHYS LETT, V46, P315 BOUBLIK T, 1989, MOL PHYS, V68, P191 CARNAHAN NF, 1969, J CHEM PHYS, V51, P635 CHAMOUX A, 1998, MOL PHYS, V93, P649 CHANDLER D, 1976, J CHEM PHYS, V65, P2925 CHANG J, 1994, CHEM ENG SCI, V49, P2777 CHAPMAN WG, 1988, MOL PHYS, V65, P1057 CHIEW YC, 1990, MOL PHYS, V70, P129 COSTA LA, 1995, J CHEM PHYS, V102, P6212 CURRO JG, 1987, MACROMOLECULES, V20, P1928 FYNEWEVER H, 1998, J CHEM PHYS, V108, P1636 HONNELL KG, 1989, J CHEM PHYS, V90, P1841 JAFFER KM, 1999, THESIS U GUELPH KIERLIK E, 1992, J CHEM PHYS, V97, P9222 KIERLIK E, 1993, J CHEM PHYS, V99, P3950 LEE SD, 1987, J CHEM PHYS, V87, P4972 MEHTA SD, 1996, J PHYS CHEM-US, V100, P10408 ONSAGER L, 1949, ANN NY ACAD SCI, V51, P627 PADILLA P, 1997, J CHEM PHYS, V106, P10299 PARSONS JD, 1979, PHYS REV A, V19, P1225 PRATT LR, 1977, J CHEM PHYS, V66, P147 SCHWEIZER KS, 1988, MACROMOLECULES, V21, P3070 SEN S, 1994, J CHEM PHYS, V101, P9010 SOMOZA AM, 1989, J CHEM PHYS, V91, P517 STELL G, 1964, EQUILIBRIUM THEORY C TILDESLEY DJ, 1980, MOL PHYS, V41, P85 VEGA C, 1994, J CHEM PHYS, V100, P6727 WERTHEIM MS, 1987, J CHEM PHYS, V87, P7323 WHITTLE M, 1991, MOL PHYS, V72, P247 WILLIAMSON DC, 1995, MOL PHYS, V86, P819 WILLIAMSON DC, 1998, J CHEM PHYS, V108, P10294 WOODWARD CE, 1994, J CHEM PHYS, V100, P3181 YETHIRAJ A, 1993, J CHEM PHYS, V98, P1635 YETHIRAJ A, 1995, J CHEM PHYS, V102, P5499 YETHIRAJ A, 1998, MOL PHYS, V93, P693 ZHOU YQ, 1995, J CHEM PHYS, V103, P2688; NR: 37; TC: 15; J9: J CHEM PHYS; PG: 13; GA: 200CHSource type: Electronic(1
The nematic-isotropic phase transition in semiflexible fused hard-sphere chain fluids
No full textA density-functional theory of the isotropic-nematic phase transition in both rigid and semiflexible hard-sphere chain fluids is described. The theory is based on an exact analytical evaluation of the excluded volume and second virial coefficient B-2 for rigid chain molecules, which demonstrates that B-2 in these cases is equivalent to that of a binary mixture of hard spheres and hard diatomic molecules. It is assumed that the same binary-mixture representation applies to semiflexible chains, while scaled particle theory is used to obtain the properties of the fluid at arbitrary densities. The results of the theory are in very good agreement with Monte Carlo (MC) simulation data for rigid tangent hard-sphere chains, but in lesser agreement with available MC studies of rigid fused hard-sphere chains. We find that there is reasonable agreement between the theory and MC data for semiflexible tangent chains, which improves with increasing chain length. The behavior predicted by the theory for semiflexible chains is contrasted with that given by the Khokhlov and Semenov theory of nematic ordering of wormlike polymer chains. (C) 2001 American Institute of Physics.PT: J; CR: BOUBLIK T, 1974, MOL PHYS, V27, P1415 BOUBLIK T, 1975, J CHEM PHYS, V63, P4084 BOUBLIK T, 1977, CHEM PHYS LETT, V46, P315 BOUBLIK T, 1981, MOL PHYS, V44, P1369 BOUBLIK T, 1989, MOL PHYS, V68, P191 BOUBLIK T, 1990, J CHEM PHYS, V93, P730 CARNAHAN NF, 1969, J CHEM PHYS, V51, P635 CHAPMAN WG, 1988, MOL PHYS, V65, P1057 CHEN ZY, 1993, MACROMOLECULES, V26, P3419 COSTA LA, 1995, J CHEM PHYS, V102, P6212 COTTER MA, 1977, J CHEM PHYS, V66, P1098 COTTER MA, 1978, PHYS REV A, V18, P2669 DIJKSTRA M, 1995, PHYS REV E A, V51, P5891 ESCOBEDO FA, 1997, J CHEM PHYS, V106, P9858 FYNEWEVER H, 1998, J CHEM PHYS, V108, P1636 GAO J, 1989, J CHEM PHYS, V91, P3168 HONNELL KG, 1989, J CHEM PHYS, V90, P1841 JAFFER KM, 1999, J CHEM PHYS, V110, P11630 KHOKHLOV AR, 1981, PHYSICA A, V108, P546 KHOKHLOV AR, 1982, PHYSICA A, V112, P605 LEE SD, 1987, J CHEM PHYS, V87, P4972 MEHTA SD, 1996, J PHYS CHEM-US, V100, P10408 MULLER M, 1998, PHYS REV E, V57, P6973 ONSAGER L, 1949, ANN NY ACAD SCI, V51, P627 PARSONS JD, 1979, PHYS REV A, V19, P1225 PATRA CN, 2000, J CHEM PHYS, V112, P1579 SEN S, 1994, J CHEM PHYS, V101, P9010 VARGA S, 2000, MOL PHYS, V98, P693 VEGA C, 1994, J CHEM PHYS, V100, P6727 WALSH JM, 1990, J PHYS CHEM-US, V94, P5115 WERTHEIM MS, 1987, J CHEM PHYS, V87, P7323 WHITTLE M, 1991, MOL PHYS, V72, P247 WILLIAMSON DC, 1995, MOL PHYS, V86, P819 WILLIAMSON DC, 1998, J CHEM PHYS, V108, P10294 YETHIRAJ A, 1992, MACROMOLECULES, V25, P3979 YETHIRAJ A, 1995, J CHEM PHYS, V102, P5499 YETHIRAJ A, 1995, J CHEM PHYS, V102, P6874 YETHIRAJ A, 1998, MOL PHYS, V93, P693 ZHOU YQ, 1995, J CHEM PHYS, V103, P2688; NR: 39; TC: 8; J9: J CHEM PHYS; PG: 11; GA: 397THSource type: Electronic(1
SSD-Based Workload Characteristics and Their Performance Implications
No full textThis repo contains blocktrace from YCSB benchmark run on a RocksDB KV store hosted on a ext4 File System.
More details can be found in the README file and also in our ACM TOS Paper here: https://dl.acm.org/doi/10.1145/3423137
Please cite our paper, if the trace is useful in your research:
@article{10.1145/3423137,
author = {Yadgar, Gala and Gabel, Moshe and Jaffer, Shehbaz and Schroeder, Bianca},
title = {SSD-Based Workload Characteristics and Their Performance Implications},
year = {2021},
issue_date = {January 2021},
publisher = {Association for Computing Machinery}, address = {New York, NY, USA},
volume = {17},
number = {1},
issn = {1553-3077},
url = {https://doi.org/10.1145/3423137},
doi = {10.1145/3423137},
abstract = {Storage systems are designed and optimized relying on wisdom derived from analysis studies of file-system and block-level workloads. However, while SSDs are becoming a dominant building block in many storage systems, their design continues to build on knowledge derived from analysis targeted at hard disk optimization. Though still valuable, it does not cover important aspects relevant for SSD performance. In a sense, we are “searching under the streetlight,” possibly missing important opportunities for optimizing storage system design.We present the first I/O workload analysis designed with SSDs in mind. We characterize traces from four repositories and examine their “temperature” ranges, sensitivity to page size, and “logical locality.” We then take the first step towards correlating these characteristics with three standard performance metrics: write amplification, read amplification, and flash read costs. Our results show that SSD-specific characteristics strongly affect performance, often in surprising ways.}, journal = {ACM Trans. Storage}, month = jan, articleno = {8}, numpages = {26}, keywords = {locality, workload characterization, I/O workload analysis, SSD}
}Paper BibTex:
@article{10.1145/3423137,
author = {Yadgar, Gala and Gabel, MOSHE and Jaffer, Shehbaz and Schroeder, Bianca},
title = {SSD-Based Workload Characteristics and Their Performance Implications},
year = {2021},
issue_date = {January 2021},
publisher = {Association for Computing Machinery},
address = {New York, NY, USA},
volume = {17},
number = {1},
issn = {1553-3077},
url = {https://doi.org/10.1145/3423137},
doi = {10.1145/3423137},
abstract = {Storage systems are designed and optimized relying on wisdom derived from analysis studies of file-system and block-level workloads. However, while SSDs are becoming a dominant building block in many storage systems, their design continues to build on knowledge derived from analysis targeted at hard disk optimization. Though still valuable, it does not cover important aspects relevant for SSD performance. In a sense, we are "searching under the streetlight," possibly missing important opportunities for optimizing storage system design.We present the first I/O workload analysis designed with SSDs in mind. We characterize traces from four repositories and examine their "temperature" ranges, sensitivity to page size, and "logical locality." We then take the first step towards correlating these characteristics with three standard performance metrics: write amplification, read amplification, and flash read costs. Our results show that SSD-specific characteristics strongly affect performance, often in surprising ways.},
journal = {ACM Trans. Storage},
month = jan,
articleno = {8},
numpages = {26},
keywords = {locality, workload characterization, I/O workload analysis, SSD}
Linguistic Minorities on the Internet
No full textThis chapter presents the results of an empirical study (done using online ethnography and discourse analysis) of how the Kurds use the Internet. In examining this situation, the author provides suggestions related to the fact that, as much as we need to be concerned with the dominance of a few major languages on the Internet, we also need to map the online presence of linguistic minorities. Such mapping is essential in order to understand the paradoxical nature of a medium that simultaneously homogenizes and fragments linguistic communities and identities.</jats:p
Effect of solvent on the morphology of MoS2 nanosheets prepared by ultrasonication-assisted exfoliation
No full textRheological characterization and thermal modeling of polyolefins for process design and tailored interfaces
No full text- …
