508 research outputs found

    Context2Name: A Deep Learning-Based Approach to Infer Natural Variable Names from Usage Contexts

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    Most of the JavaScript code deployed in the wild has been minified, a process in which identifier names are replaced with short, arbitrary and meaningless names. Minified code occupies less space, but also makes the code extremely difficult to manually inspect and understand. This paper presents Context2Name, a deep learningbased technique that partially reverses the effect of minification by predicting natural identifier names for minified names. The core idea is to predict from the usage context of a variable a name that captures the meaning of the variable. The approach combines a lightweight, token-based static analysis with an auto-encoder neural network that summarizes usage contexts and a recurrent neural network that predict natural names for a given usage context. We evaluate Context2Name with a large corpus of real-world JavaScript code and show that it successfully predicts 47.5% of all minified identifiers while taking only 2.9 milliseconds on average to predict a name. A comparison with the state-of-the-art tools JSNice and JSNaughty shows that our approach performs comparably in terms of accuracy while improving in terms of efficiency. Moreover, Context2Name complements the state-of-the-art by predicting 5.3% additional identifiers that are missed by both existing tools

    Correlation between number of mature eggs retrieved and live birth rate in IVF treatment

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    Background: There is a strong association between the number of eggs and clinical pregnancy rates. But a few studies have shown conflicting results. Aim was to determine the relation between number of mature eggs retrieved and live birthrate in one complete IVF cycle (fresh and all frozen transfers included) and hence determine the optimum number of oocytes. Private IVF centre doing  around 2000 cycles per year.Methods: Retrospective analysis of 1140  infertile women between 20 and 45 years who underwent self-stimulation IVf in our centre. Cumulativelive birth rate in one complete IVF cycle.  Secondary outcome was the number of cases of moderate and severe OHSS.Results: Maximum LBR in patients where 10-15 egg were retrieved in fresh embryo transfer and cumulative LBR was maximum when more than 15 eggs were retrieved. No case of severe OHSS and one case of moderate OHSS in the group where more than 15 eggs were retrieved.Conclusions: The percentage of live birth increases with increasing number of mature eggs in IVF treatment. The incidence of OHSS was negligible

    An Executable Packer

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    This thesis addresses the topic of development and advancement of the Packer technology. It aims to prove that with the implementation of advanced code encryption and cryptographic techniques in conjunction with standard packingmethods, testing binaries with anti-virus will become increasingly difficult.Study on this topic reveals that the idea of encoding data has already been established, but it is still not fully incorporated into a technique to pack an executable file. There are some noticeable defects as un-packer tools have also made a great advancement in the field of dynamic analysis. The addition of new capability to recognize emulation environment and taint analysis has lead to execution-time detections of malware.The plan is to develop a proof of concept that proves that the dynamic un-packers like Renovo can be defeated. The prototype will try to pack and compress the binary file in such a way that it can easily evade the emulation environment created by anti-viruses

    Studies in Heterocyclic Moieties

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    Exploring the experiences of Indian Gujarati people in the London area supporting a person with dementia

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    Dementia care-giving is often constructed as burdensome and stressful. However, there is a growing interest to explore what the positive aspects of care-giving might be. Furthermore, there is little research which has focussed on the experiences of dementia care-giving in minority ethnic groups. Existing research mostly homogenises different ethnic groups, particularly different South Asian communities. It is argued that little is known about the care-giving experiences of specific South Asian subgroups but early research suggests variations in care-giving exists between them. The aim of the present study was to gain an insight into how some British Indian Gujaratis, a specific South Asian cultural linguistic group, felt about supporting a family member with dementia, particularly what care-giving meant to them, what were the positive and negative aspects of care-giving and what helped them to cope. The present study adopted a qualitative methodology using semi-structured interviews. Ten participants’ accounts were analysed using Interpretative Phenomenological Analysis. Four main themes emerged capturing the impact of dementia care-giving for caregivers at an intrapsychic, dyadic, family and community and culture level. Each theme had a number of subordinate themes. Consistent with previous findings were the themes of psychological impact, growth and development, loss of relationship, reciprocity and family support. The study highlighted new themes at a community and culture level around expectations and norms and knowing and talking about dementia. It also highlighted the role religion and spirituality might play in helping some to manage the negative impact of care-giving. The findings have both clinical and research implications which are highlighted

    Building community capacity in the rebuilding of New Orleans : the role of philanthropic funders post-Katrina

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    Thesis (M.C.P.)--Massachusetts Institute of Technology, Dept. of Urban Studies and Planning, 2007.Includes bibliographical references (p. 61-63).How can funders strengthen community capacity in post-Katrina New Orleans? Residents of low-income, minority neighborhoods have historically faced government neglect, and consequently distrust decisionmakers, in a city of extreme race and class segregation. These communities are now being overlooked in a market-driven rebuilding process. Based on a tradition of self-determination, groups across the city are fighting to meet new needs. With massive institutional failure at all levels, philanthropy could support these groups. The purpose of this thesis is to help the Gulf Coast Funders for Equity, a consortium committed to more equitable redevelopment, think strategically about how to allocate resources to strengthen these groups, some of which form, struggle, and evaporate before funders can reach them. I use a mixed-method case study approach: in-depth interviews with key informants; review of media coverage and documentary sources; and a secondary review of comparable approaches. First, to sharpen the rationale for community capacity building, I examine the pre- and post-storm roles and contributions of informal groups in New Orleans. These groups serve as nodes of trust, support and enthusiasm in overlooked communities.(cont.) Second, I review lessons learned from foundation-sponsored capacity building initiatives in the wake of the 2004 Indian Ocean Tsunami and the civil unrest in Los Angeles in 1992. These cases highlight the importance of intermediary organizations to reach and support community groups, the variety of roles that a collaborative structure enables funders to play, and the importance of technical assistance for sustained community change. Third, having interviewed the grantor and prospective grantee (community group) insiders in this picture, I find a genuine interest in partnering on both sides. Among the community groups, I also find: significant information and capacity gaps; a desperate need for core operating support as much as program funds; a frustration that promising collaborations-in-progress are overlooked by funders; and concerns about the downsides of becoming grant-driven organizations. Among the funders, on the other hand, I find: confusion about what kinds of community groups to target; concerns about raising expectations through outreach without following through with funds; limited or missing capacity-including cultural competence-to do this kind of work; and variable willingness to take risks.(cont.) I recommend that funders: create local staff presence to do effective outreach and learn the landscape; provide appropriate technical assistance that does not compel groups to formalize; focus on brokering "bridging" relationships between community groups and local decisionmakers; emphasize sustained engagement; and develop the funder collaborative by choosing best options for joint action, defining roles and supporting continuous learning.by Jainey K. Bavishi.M.C.P

    Transcatheter Left Atrial Appendage Closure: Devices Available, Pitfalls, Advantages, and Future Directions

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    Transcatheter left atrial appendage closure has emerged as a non-pharmacological alternative to long-term anticoagulation for stroke prevention in appropriately selected patients with AF. In this concise review article, the Food and Drug Administration-approved and some other left atrial appendage closure devices that are under investigation are discussed. Currently, Watchman Flx and Amplatzer Amulet are the only two devices that have been approved for commercial use by the Food and Drug Administration. A brief overview of device designs, clinical data on efficacy and safety, major limitations of left atrial appendage closure devices, and perspectives on future direction are provided. The current generation of devices is effective; however, efforts should continue on innovations and refinement of device technology

    SMARTPARK-Intelligent Parking Application using Image Processing

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    The Review paper discusses about the growing problem of car parking in urban areas due to the growing population .Due to growing population the number of vehicles has increased simultaneously and because of the limited parking lots, the problem of car parking is proliferating. In order to stop this, a system has been proposed to provide whole extensive proof based on growing urbanization, increasing traffic flow and technology growth for implementing innovative help and services to public transport system with aim to accelerate local social wealth by providing a mobile phone application for real time scanning and searching for available parking area and tracking the vacancy in the parking lot using existing technologies i.e. CCTV cameras. By having the image of the area, the particular car park slots can be detected and thereafter the processed information can be used as to guide the driver to an empty parking slot which will save his time. The whole idea is to make car parking more efficient and less tedious for the drivers

    Role of neprilysin inhibitor combinations in hypertension: insights from hypertension and heart failure trials

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    Neprilysin is a neutral endopeptidase and its inhibition increases bioavailability of natriuretic peptides, bradykinin, and substance P, resulting in natriuretic, vasodilatatory, and anti-proliferative effects. In concert, these effects are prone to produce a powerful ventricular unloading and antihypertensive response. LCZ696 (Valsartan/sacubitril) is a first-in-class angiotensin II-receptor neprilysin inhibitor. LCZ696 is a novel drug not only for the treatment of heart failure but it is also likely to be a useful antihypertensive drug and may have a preferential effect on systolic pressure. This review discusses (i) the mechanism of action, pharmacokinetics, and pharmacodynamics of this novel drug, (ii) the efficacy, safety, and tolerability of LCZ696 in treatment of hypertension from the available trials, (iii) evidence from other contemporary trials on combined Neprilysin inhibitors, (iv) future trials and areas of research to identify hypertensive patient populations that would most benefit from LCZ69
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