Extending Transit Facility to India: Implications for Pakistan’s Bilateral Trade with Afghanistan

The paper examines patterns of bilateral trade between Pakistan, India, Afghanistan and CARs. It also investigates whether providing India transit route to Afghanistan has opportunity costs for Pakistan’s trade potential with Afghanistan and CARs. In 2009, Pakistan’s exports to Afghanistan amount to US$ 1.3 billion which make up for 7.8 % of Pakistan’s total exports. For the same year, India’s exports to Afghanistan stand at 471 million dollars which make 0.3 % of India’s total exports. Looking at the product wise composition of Pakistan’s exports to Afghanistan, mineral fuels, oils, distillation products are on the top with share of around 29%. Salt, sulpher, earth, plaster, lime and cement and cereals have a share of around 11 %. While animal, vegetable fats and oils, cleavage products and articles of iron and steel have the share of around 7%. On the other hand, the top five exports of India to Afghanistan are man-made filaments with 42 % share, pharmaceutical products with 11 % share, electric and electronic equipment with 7% share and rubber and articles with 6% share. Clearly there is no overlap between exports of Pakistan and India to Afghanistan. Nonetheless Pakistan has already lost its market share to India in pharmaceuticals. The tariff applied to Pakistan by Afghanistan on pharmaceuticals is 2.50 % while India which enjoys Preferential Trade Agreement with Afghanistan only faces an average tariff of 0.60% on pharmaceuticals. Pharmaceuticals are Pakistan’s top performing exports to CARs with 42.5 % share of total exports to CARs. India also exports pharmaceuticals to CARs but its share in total exports to CARs is only 25.5 %. In Afghanistan, Pakistan has clearly lost its market share to India due to presence of preferential tariffs for India in Afghanistan. If Pakistan provides transit route to India for its exports to Afghanistan, cheaper pharmaceuticals of Indian origin can then be re-exported to CARs capturing Pakistan’s market share in CARs. Much like pharmaceuticals there are other Pakistani products which are likely to lose out to India in Afghanistan and CARs if India is provided transit route to Afghanistan. The Wagah-Peshawar-Torkham route which roughly extends up to 800 km is probably the shortest possible one between India and Afghanistan; which would greatly reduce the logistics cost of shipping goods from India to Afghanistan and beyond. In addition to that, the preferential treatment currently enjoyed by Indian products in Afghanistan under the PTA would further cost Pakistani goods by eroding their competitiveness in the Afghan market. In the absence of a robust mechanism to contain the informal trade, allowing Indian goods a passage through Pakistan’s territory would, in all likelihood, worsen the smuggling situation, something Pakistan can ill afford to accept. Therefore, under the circumstances, there are clear economic disadvantages to Pakistan in extending the transit facility to India without adequate safeguards and preferably a quid pro quo, be it political or economic.International Trade, Transit Trade Agreements, Pakistan, India, Afghanistan, Sectoral Analysis

Deep reinforcement learning based Evasion Generative Adversarial Network for botnet detection

Botnet detectors based on machine learning are potential targets for adversarial evasion attacks. Several research works employ adversarial training with samples generated from generative adversarial nets (GANs) to make the botnet detectors adept at recognising adversarial evasions. However, the synthetic evasions may not follow the original semantics of the input samples. This paper proposes a novel GAN model leveraged with deep reinforcement learning (DRL) to explore semantic aware samples and simultaneously harden its detection. A DRL agent is used to attack the discriminator of the GAN that acts as a botnet detector. The agent trains the discriminator on the crafted perturbations during the GAN training, which helps the GAN generator converge earlier than the case without DRL. We name this model RELEVAGAN, i.e. [“relieve a GAN” or deep REinforcement Learning-based Evasion Generative Adversarial Network] because, with the help of DRL, it minimises the GAN's job by letting its generator explore the evasion samples within the semantic limits. During the GAN training, the attacks are conducted to adjust the discriminator weights for learning crafted perturbations by the agent. RELEVAGAN does not require adversarial training for the ML classifiers since it can act as an adversarial semantic-aware botnet detection model. The code will be available at https://github.com/rhr407/RELEVAGAN

Phytochemical and biological screening of Berberis aristata

Background: Berberis aristata occupies significant position as a medicinal plant. Given its clinical applications and the grave concern of weed based crop damage in Pakistan, the plant was investigated for its antimicrobial and allelopathic activities.Methods: Fresh Berberis aristata plant was obtained from Rawalakot and Hajeera (District Poonch) Azad Kashmir. Methanolic extract preparation and phytochemical analysis was done using standard procedures. Antibacterial and antifungal activities of the root, stem and leaf extracts of the plant were assayed against the bacterial strains E. coli, S. typhi, S. aureus, Shigella, Citrobacter, P. vulgaris, Enterobacter, S. pyrogenes, V. cholera and Klebsiella spp. and fungal strains A. niger,Cladosporium, Rhizoctonia, Alternaria, Trichoderma, Penicillium, Curvularia, Paecilomyces andRhizopus using disc diffusion method. Also, the phytoxicity of the extracts was evaluated againstLemna minor and the data was recorded after seven days.Results: Phytochemical screening of the three extracts identified the presence of alkaloids, reducing sugars, steroids, flavonoids, terpenoids, glycosides and saponins while tannins were found to be absent. The leaf extract also showed negative tests for alkaloids and steroids. The extracts significantly inhibited the growth of the employed microbial isolates. The leaf extract, however, was not active against A. niger, Curvularia, Paecilomyces and Rhizopus. For most of the tested strains, the effectiveness of the extracts was much higher than that of Amoxicillin and Fluconazole; the positive controls used for bacterial and fungal cultures, respectively. All the extracts demonstrated 100% phytotoxicity against Lemna minor at 1000 μg/mL while low activity (10-20%) was observed at 10 μg/mL and 100 μg/mL, respectively.Conclusion: The results strongly support the profound ethnobotanical applications of this plant and also demonstrate its potential for use in weed control strategies

Regional trade in south Asia-impediments and the way forward

The paper sets out to suggest that regional trade between South Asia is quite low when compared to other regional blocks like NAFTA, EU 15, ASEAN, and MERCOUSER. The paper identifies non cooperation between India and Pakistan to be the main reason behind low trade in South Asia. The paper focuses on the pending trade issues between both countries that are preventing India and Pakistan to increase bilateral trade and economic cooperation. The first issue discussed in the paper is granting of MFN status to India by Pakistan. The paper finds that it is in the benefit of both countries if Pakistan gives MFN status to India. But before such a step is taken, it is essential that Pakistan moves from a positive list approach to a negative list approach. Pakistan can include industries like textiles in the negative list to prevent the flood of cheap Indian textiles. Once MFN status is granted to India, Pakistan would be able to raise more substantive issues, notably Indian NTBs, subsidies, and protective tariffs. Currently India practices various forms of NTBs against Pakistan. The visa restrictions and absence of financial services are the major NTBs. Such NTBs have prevented Pakistan to export more to India. Another trade issue highlighted in the paper is that of transit facility. India does not provide Pakistan a transit route to Nepal and Bhuttan. In contrast Pakistan has provided Afghanistan transit route to India, though Pakistan does not allow India a transit route to Afghanistan or beyond. The paper finds that there is a high risk of informal trade in case Pakistan provides India with the land route to Afghanistan through its territory. It is anticipated that most Indian exports to Afghanistan would be smuggled back into Pakistan affecting Pakistan’s local industry. The transit facility is by far the most complicated trade issue of the three. Though the paper concludes in favor of granting India MFN and against the imposition of NTBs, It only gives a conditional recommendation in favor of granting India transit route to Afghanistan in case India provides Pakistan transit route to Nepal and Bhuttan.Regional Trade Agreements, Barriers to Trade, WTO

Defect engineering for improved photocatalytic performance of reduced lead titanate (PbTiO3) under solar light irradiation

Lead titanate (PbTiO3) nanoparticles were prepared successfully by template free hydrothermal  method. Size, crystallinity, morphology and phase determination of the nanoparticles were made by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS) and field-emission scanning electron microscopy (FESEM). FESEM results had shown that all nanoparticles were in the range between 20 to 40 nm size and found in the form of agglomerates. The average crystallite size of PbTiO3 nanoparticles was calculated to be nearly 35 nm. PbTiO3 nanoparticles were reduced by hydrogenation at high temperature to make the material active for visible light. Furthermore, optical absorbance of PbTiO3 nanoparticles was determined by applying ultraviolet-visible-near infrared (UV-Vis-NIR) spectroscopy. By using Davis-Mott model, the direct optical band gap of 2.65 eV was acquired. Methyl orange (MO) was used as pollutant to check the photocatalytic activity of reduced PbTiO3 nanoparticles under solar light irradiation. Photocatalytic activity of reduced PbTiO3 nanoparticles increased 2.6 times more than that of pure PbTiO3 nanoparticles for methyl orange (MO) under solar light irradiation.               KEY WORDS: Lead titanate (PbTiO3), Photocatalytic performance, Hydrothermal growth, Solar light, Irradiation Bull. Chem. Soc. Ethiop. 2019, 33(2), 373-380.DOI: https://dx.doi.org/10.4314/bcse.v33i2.1

Energy Efficient Frame Structure for Gigabit Passive Optical Networks

Increasing power consumption in information and communication access networks is one of the major cause of greenhouse gas emissions. These emissions are harmful to life on earth. Passive Optical Networks (PONs) are energy efficient but the broadcast nature of downstream traffic may cause of huge unnecessary processing of frames by the optical network units and result in significant energy wastage. Bi-PON technique tried to solve this problem by changing the XGPON / GPON frame structure to an interleaved pattern but also required additional hardware changings at the optical network units.  In this study, we have tried to achieve the same objective by making a few changings in the GPON frame structure without modifying the existing hardware structure. The simulation results show that 25.25% processing energy of an ONU can be saved by incorporating these changes

Quantitative analysis of a brass alloy using CF- LIBS and a laser ablation time-of-flight mass spectrometer

We present a quantitative analysis of a brass alloy using laser induced breakdown spectroscopy, energy dispersive x-ray spectroscopy (EDX) and laser ablation time-of-flight mass spectrometry (LA-TOF-MS). The emission lines of copper (Cu I) and zinc (Zn I), and the constituent elements of the brass alloy were used to calculate the plasma parameters. The plasma temperature was calculated from the Boltzmann plot as (10 000 ± 1000) K and the electron number density was determined as (2.0 ± 0.5) × 1017 cm−3 from the Stark-broadened Cu I line as well as using the Saha–Boltzmann equation. The elemental composition was deduced using these techniques: the Boltzmann plot method (70% Cu and 30% Zn), internal reference self-absorption correction (63.36% Cu and 36.64% Zn), EDX (61.75% Cu and 38.25% Zn), and LA-TOF (62% Cu and 38% Zn), whereas, the certified composition is (62% Cu and 38% Zn). It was observed that the internal reference self-absorption correction method yields analytical results comparable to that of EDX and LA-TOF-MS

Band gap engineering for improved photocatalytic performance of CuS/TiO2 composites under solar light irradiation

ABSTRACT. Nanoparticles of CuS, TiO2 and CuS/TiO2 composites were prepared by template free hydrothermal method. Prepared nanoparticles were characterized by X-ray diffraction (XRD) and electron dispersive X-ray spectroscopy to confirm the formation of nanoparticles. Field emission scanning electron microscopy (FESEM) was applied to investigate the morphology and particle size of the nanoparticles which were measured in the range of 30–40 nm. Photocatalytic performance of CuS, TiO2 and Cus/TiO2 were measured by degradation of methyl orange (MO) under solar light irradiation. Coupling of n-type TiO2 (3.2 eV) with p-type CuS (1.9 eV) showed efficient degradation of the contaminants under the solar light irradiation. Photocatalytic performance of CuS/TiO2 composite improves 1.4 times than CuS for the degradation of methyl orange (MO) under solar light irradiation.               KEY WORDS: CuS/TiO2 composites, Photocatalytic performance, Hydrothermal growth, Solar light, Irradiation Bull. Chem. Soc. Ethiop. 2019, 33(3), 561-571.        DOI: https://dx.doi.org/10.4314/bcse.v33i3.1

Effect of channel spacing on the signal quality for a bi-directional TWDM PON

As the demand for broadband services increase coupled with the introduction of new services like online interactive gaming, high definition video TV, video on demand etc., the ability to support higher data rates and efficient utilization of the deployed network is necessary. This largely depends on the capacity and quality of the access networks. Currently deployed Passive Optical Networks (PON) like GPON and EPON will not be able to meet the growing demand in the future. Although both of these PONs have evolved to their respective 10G versions called XG-PON and 10G-EPON, they will eventually reach the limit of their capacity. This has paved the way for the next evolution of PON named as Next Generation PON Stage-2 (NG-PON2). NG-PON2 has the advantage of a much larger bandwidth and scalability by using a combination of Time and Wavelength Division Multiplexing known as TWDM PON. In this paper we have investigated the effect of varying channel spacing (50GHz, 100GHz and 200GHz) on the quality of a Bi-directional TWDM PON signal. The best results were obtained with the widest channel spacing of 200GHz (1.6nm)